WO2021100154A1 - Belt holding tool - Google Patents

Belt holding tool Download PDF

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Publication number
WO2021100154A1
WO2021100154A1 PCT/JP2019/045482 JP2019045482W WO2021100154A1 WO 2021100154 A1 WO2021100154 A1 WO 2021100154A1 JP 2019045482 W JP2019045482 W JP 2019045482W WO 2021100154 A1 WO2021100154 A1 WO 2021100154A1
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WO
WIPO (PCT)
Prior art keywords
belt
side wall
compression surface
compression
wedge
Prior art date
Application number
PCT/JP2019/045482
Other languages
French (fr)
Japanese (ja)
Inventor
雅也 瀬良
治彦 角谷
重孝 佐治
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to CN201980102084.0A priority Critical patent/CN114650960B/en
Priority to PCT/JP2019/045482 priority patent/WO2021100154A1/en
Priority to JP2021558102A priority patent/JP7188616B2/en
Publication of WO2021100154A1 publication Critical patent/WO2021100154A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B7/00—Other common features of elevators
    • B66B7/06—Arrangements of ropes or cables
    • B66B7/08—Arrangements of ropes or cables for connection to the cars or cages, e.g. couplings

Definitions

  • the present invention relates to a belt gripper.
  • Patent Document 1 discloses a belt gripper. According to the belt gripper, a reinforcing fiber belt in which the surface of the load supporting member is coated with a flexible resin can be gripped.
  • An object of the present invention is to provide a belt gripper capable of firmly gripping a belt while suppressing the load supporting member from cracking in the longitudinal direction of the belt.
  • the belt gripper relates to a belt having a flat cross section composed of a load supporting member including a reinforcing fiber that bears a load in the longitudinal direction and a covering material that covers the surface of the load supporting member. It is formed from a first compression surface located on one side in the thickness direction of the belt, a first side wall surface located on one side in the width direction of the belt, and a second side wall surface located on the other side in the width direction of the belt.
  • a second pressing member having a concave groove and a second pressing member located on the other side of the belt in the thickness direction and sandwiching the belt with the first compression surface to give a compressive force in the thickness direction to the belt.
  • a second pressing member having a compression surface is provided, and the first compression surface and the second compression surface are larger than the widthwise end distance of the load supporting member located at both ends in the width direction of the belt.
  • the first side wall surface and the second side wall surface have a large width, and when the belt receives a compressive force in the thickness direction while being sandwiched between the first compression surface and the second compression surface. In addition, it comes into contact with the covering material in the width direction of the belt, and a force from the outside in the width direction to the center in the width direction of the belt acts on the belt.
  • the belt gripper refers to a belt having a flat cross section composed of a load supporting member including a reinforcing fiber that bears a load in the longitudinal direction and a covering material that covers the surface of the load supporting member.
  • the belt is sandwiched between a first pressing member having a first compression surface located on one side in the thickness direction of the belt and the belt located on the other side in the thickness direction of the belt and sandwiching the belt with the first compression surface.
  • a second pressing member having a second compression surface that gives a compressive force in the thickness direction to the belt, and at least one of the first compression surface and the second compression surface is on the center side in the width direction of the belt. The component force toward is applied to the belt.
  • the belt can be firmly gripped while suppressing the load supporting member from cracking in the longitudinal direction of the belt.
  • FIG. 2 is a cross-sectional view taken along the line AA of FIG. It is an enlarged view of the load support member in the cross section in line AA of FIG. It is a front view of the belt gripper in Embodiment 1.
  • FIG. 6 is a cross-sectional view taken along the line BB of FIG.
  • FIG. 6 is a cross-sectional view taken along the line CC of FIG.
  • FIG. 5 is a cross-sectional view of a first modification of the belt to which the belt gripper according to the first embodiment is applied.
  • FIG. 5 is a cross-sectional view of a second modification of the belt to which the belt gripper according to the first embodiment is applied.
  • It is sectional drawing of the 3rd modification of the belt gripping tool in Embodiment 1.
  • FIG. It is sectional drawing of the 4th modification of the belt gripping tool in Embodiment 1.
  • FIG. It is sectional drawing of the 5th modification of the belt gripping tool in Embodiment 1.
  • FIG. 16 is a cross-sectional view taken along the line DD of FIG. It is sectional drawing of the belt gripping tool in Embodiment 2.
  • FIG. FIG. 5 is a cross-sectional view of a first modification of the belt gripper according to the second embodiment. It is sectional drawing of the 2nd modification of the belt gripping tool in Embodiment 2.
  • FIG. It is sectional drawing of the 3rd modification of the belt gripping tool in Embodiment 2.
  • FIG. It is sectional drawing of the 3rd modification of the belt gripping tool in Embodiment 2.
  • FIG. It is sectional drawing of the 4th modification of the belt gripping tool in Embodiment 2.
  • FIG. 5 is a cross-sectional view of a first modification of the belt gripper according to the third embodiment. It is sectional drawing of the belt gripping tool in Embodiment 4.
  • FIG. 5 is a cross-sectional view of a first modification of the belt gripper according to the fourth embodiment.
  • FIG. 1 is a configuration diagram of an elevator to which the belt gripper according to the first embodiment is applied.
  • the hoistway 1 penetrates each floor of the building.
  • the machine room 2 is provided directly above the hoistway 1.
  • the hoisting machine 3 is provided in the machine room 2.
  • the deflecting wheel 4 is provided in the machine room 2.
  • a pair of car guide rails (not shown) are provided inside the hoistway 1.
  • a pair of balanced weight guide rails (not shown) are provided inside the hoistway 1.
  • the hoisting machine 3 is provided inside the machine room 2.
  • the hoisting machine 3 includes a motor (not shown), a drive sheave (6), and a brake (not shown).
  • the motor is rotatably provided.
  • the drive sheave 6 is attached to the rotating shaft of the motor.
  • the brake is provided so as to be able to brake the rotation of the drive sheave 6.
  • the deflecting wheel 4 is provided inside the machine room 2.
  • the deflecting wheel 4 is rotatably provided.
  • the plurality of belts 7 are wound around the drive sheave 6 and the deflecting wheel 4. In addition, in FIG. 1, only one belt 7 is shown.
  • the car 8 and the balance weight 9 are provided inside the hoistway 1.
  • the basket 8 and the counterweight 9 are suspended by a belt 7 by a 1: 1 roping method.
  • the car 8 is guided vertically by a pair of car guide rails inside the hoistway 1.
  • the car 8 includes a car frame 10 and a car room 11.
  • the car frame 10 is connected to one side of the belt 7 by using a connecting member 13 (not shown in FIG. 1), a belt gripper 12, and a pin 14 (not shown in FIG. 1).
  • the car chamber 11 is supported by the car frame 10.
  • the balance weight 9 is guided in the vertical direction by a pair of balance weight guide rails inside the hoistway 1.
  • the balance weight 9 is connected to the other side of the belt 7 by using a connecting member 13 and a belt gripper 12 (not shown in FIG. 1) and a pin 14 (not shown in FIG. 1).
  • the control device 5 is provided inside the machine room 2.
  • the control device 5 controls the operation of the car 8 by controlling the hoisting machine 3. For example, the control device 5 raises and lowers the car 8 and the counterweight 9 by rotating the drive sheave 6.
  • FIG. 2 is a perspective view showing an end portion of the belt to which the belt gripper according to the first embodiment is applied.
  • FIG. 3 is a cross-sectional view taken along the line AA of FIG.
  • the X-axis direction in FIG. 2 is the width direction of the belt 7.
  • the Y-axis direction in FIG. 2 is the thickness direction of the belt 7.
  • the Z-axis direction in FIG. 2 is the longitudinal direction of the belt 7. The same reference numerals are used thereafter.
  • the belt 7 is a rectangular flat belt.
  • the dimension in the thickness direction is smaller than the dimension in the width direction.
  • a load due to the weight of the cage 8 and the counterweight 9 acts on the belt 7 in the Z-axis direction.
  • the belt 7 is bent in the direction around the X-axis when passing through the drive sheave 6 and the deflecting wheel 4, which are not shown in FIG.
  • the belt 7 is composed of a load supporting member 71 and a covering material 72.
  • the load support member 71 bears the load in the longitudinal direction of the belt 7.
  • the shape and number of the load supporting members 71 are not limited.
  • the covering material 72 covers the entire circumference of the load supporting member 71.
  • the covering material 72 protects the load supporting member 71 from external environmental loads such as heat and humidity and physical loads due to contact with the drive sheave 6, the deflecting wheel 4, and the like.
  • the covering material 72 also plays a role of stably providing the traction required for the belt 7.
  • the belt 7 has a belt lower surface 7a, a belt upper surface 7d, a belt side surface 7b, and a belt side surface 7c.
  • the lower surface of the belt 7a and the upper surface of the belt 7d are surfaces on the side having a long side of a rectangle.
  • the belt side surface 7b and the belt side surface 7c are surfaces having a rectangular short side.
  • the belt 7 has a vertically symmetrical shape. Therefore, in the belt 7, there is no distinction between upper and lower.
  • the lower surface 7a of the belt is a surface on the ⁇ Y axis side.
  • the upper surface 7d of the belt is the surface on the + Y side.
  • the side surface 7b of the belt is a surface on the ⁇ X axis side.
  • the side surface 7c of the belt is a surface on the + X axis side.
  • FIG. 4 is an enlarged view of the load supporting member in the cross section taken along the line AA of FIG.
  • the load supporting member 71 is composed of a large number of high-strength fibers 73 and an impregnated resin 74.
  • a large number of high-strength fibers 73 are arranged along the longitudinal direction of the belt 7.
  • the large number of high-strength fibers 73 are lightweight, high-strength, continuous reinforcing fibers.
  • the impregnated resin 74 binds the high-strength fibers 73 to each other.
  • FIG. 5 is a front view of the belt gripper according to the first embodiment.
  • FIG. 6 is a right side view of the belt gripper according to the first embodiment.
  • FIG. 7 is a cross-sectional view taken along the line BB of FIG.
  • FIG. 8 is a cross-sectional view taken along the line CC of FIG.
  • the belt gripper 12 is connected to the connecting member 13 by the pin 14. As shown in FIGS. 5 to 8, the belt gripper 12 is composed of a housing 20, a first wedge 25, and a second wedge 26.
  • the housing 20 is composed of a first receiving member 21, a second receiving member 22, a first horizontal member 23, and a second horizontal member 24.
  • the first receiving member 21 and the second receiving member 22 face each other.
  • the first lateral member 23 and the second lateral member 24 face each other.
  • the first receiving member 21, the second receiving member 22, the first lateral member 23, and the second lateral member 24 form a hole penetrating in the longitudinal direction of the belt 7.
  • the first lateral member 23 has a pin hole 23a.
  • the pin hole 23a penetrates in the width direction of the belt 7.
  • the second lateral member 24 has a pin hole 24a.
  • the pin hole 24a penetrates in the width direction of the belt 7.
  • the connecting member 13 has a pin hole 13a.
  • the pin hole 13a penetrates in the width direction of the belt 7.
  • both ends of the pin 14 are bolt-shaped.
  • pin 14 is a reamer bolt.
  • the pin 14 is a shoulder bolt.
  • the first wedge 25 and the second wedge 26 are inserted into the through hole of the housing 20 with the belt 7 inserted into the through hole of the housing 20.
  • the first wedge 25 is supported by the first receiving member 21 as the first pressing member.
  • the second wedge 26 is supported by the second receiving member 22 as the second pressing member.
  • the first wedge 25 and the second wedge 26 come into contact with the belt 7.
  • the first wedge 25 and the second wedge 26 apply a compressive force in the thickness direction of the belt 7.
  • the first wedge 25 has a first compression surface 25a, a first side surface 25b, a second side surface 25c, and a first receiving surface 25d.
  • the first wedge 25 forms a concave groove on the first compression surface 25a, the first side surface 25b, and the second side surface 25c.
  • the width of the groove of the first wedge 25 is about the same as the width of the belt 7.
  • the depth of the groove of the first wedge 25 is equal to or greater than the thickness of the belt 7.
  • the first compression surface 25a is a surface that comes into contact with the lower surface 7a of the belt.
  • the first side surface 25b is a surface facing the belt side surface 7b.
  • the second side surface 25c is a surface facing the belt side surface 7c. At least in a state where the belt 7 is compressed in the thickness direction, the first side surface 25b and the second side surface 25c come into contact with the covering material 72 of the belt 7 to apply a compressive force in the width center direction of the belt 7 to the covering material 72. give away.
  • the first receiving surface 25d is a facing surface of the first compression surface 25a.
  • the first receiving surface 25d is inclined in a direction in which the distance from the first compression surface 25a becomes smaller in the tension direction (+ Z axis direction) of the belt 7.
  • the first wedge 25 is supported by being in contact with the first receiving member 21 of the housing 20 at the first receiving surface 25d.
  • the surface in contact with the first receiving surface 25d is parallel to the first receiving surface 25d.
  • the second wedge 26 has a shape provided with convex protrusions in the thickness direction of the belt 7.
  • the protrusion of the second wedge 26 can be inserted into the groove of the first wedge 25.
  • the protrusion of the second wedge 26 has a width larger than that of the load supporting member 71 in the width direction of the belt 7.
  • the second wedge 26 has a second compression surface 26a and a second receiving surface 26d.
  • the second compression surface 26a is a surface that comes into contact with the upper surface 7d of the belt.
  • the second compression surface 26a is located at the tip of the protrusion.
  • the second receiving surface 26d is a facing surface of the second compression surface 26a.
  • the second receiving surface 26d is inclined in a direction in which the distance from the second compression surface 26a becomes smaller in the tension direction (+ Z axis direction) of the belt 7.
  • the second wedge 26 is supported by being in contact with the second receiving member 22 of the housing 20 at the second receiving surface 26d.
  • the surface in contact with the second receiving surface 26d is parallel to the second receiving surface 26d.
  • the friction coefficient between the belt 7 and the first compression surface 25a and the friction coefficient between the belt 7 and the second compression surface 26a are the friction coefficient between the first receiving surface 25d and the first receiving member 21. Is larger than the coefficient of friction between the second receiving surface 26d and the second receiving member 22.
  • the belt 7 has the first compression surface 25a of the first wedge 25 and the second compression surface 26a of the second wedge 26 in a state of being inserted into the groove of the first wedge 25. Receives compressive force in the thickness direction by being sandwiched between. The belt 7 is gripped by the frictional force between the first wedge 25 and the second wedge 26 in the longitudinal direction.
  • Belt 7 tends to widen in the width direction due to the influence of Poisson's ratio due to the compressive force in the thickness direction. At this time, the belt 7 comes into contact with the first side surface 25b and the second side surface 25c of the first wedge 25. Due to the contact, the belt 7 receives a reaction force in the width direction from the first side surface 25b and the second side surface 25c of the first wedge 25. That is, a force acts on the belt 7 from the outside in the width direction to the center in the width direction due to the contact. As a result, the spread of the covering material 72 is suppressed by the first side surface 25b and the second side surface 25c of the first wedge 25. Therefore, the tensile force in the width direction acting on the load supporting member 71 can be reduced.
  • the belt 7 can be firmly gripped while suppressing the load supporting member 71 from cracking in the longitudinal direction.
  • the fact that the load supporting member cracks in the longitudinal direction means that the load supporting member cracks in the longitudinal direction and is locally divided in the width direction.
  • the friction coefficient between the belt 7 and the first compression surface 25a and the friction coefficient between the belt 7 and the second compression surface 26a are the friction between the first wedge 25 and the first receiving surface 25d. It is larger than the coefficient and the coefficient of friction between the second wedge 26 and the second receiving surface 26d. Therefore, when the belt 7 is tensioned, the belt 7, the first wedge 25, and the second wedge 26 are integrated in the direction in which the first wedge 25 and the second wedge 26 bite into the inside of the housing 20. It works. At this time, slip does not occur between the belt 7 and the first wedge 25 and between the belt 7 and the second wedge 26. As a result, the belt 7 can be gripped without damaging the covering material 72 on the surface of the belt 7. Further, the wedge mechanism increases the compressive force of the belt 7 in the thickness direction. Therefore, even if a large tension acts on the belt 7, it is possible to prevent the belt 7 from coming off.
  • the belt 7 When the belt 7 receives the compressive force in the thickness direction, if the first side surface 25b and the second side surface 25c come into contact with the belt 7, the first side surface before the belt 7 receives the compressive force in the thickness direction. The 25b and the second side surface 25c do not have to be in contact with the belt 7. On the other hand, if the belt 7 is in contact with the first side surface 25b and the second side surface 25c at the stage when the belt 7 is inserted into the groove of the first wedge 25 before receiving the compressive force, the belt 7 is the first.
  • the spread of 72 in the belt width direction is suppressed. Therefore, it is possible to more reliably prevent the load supporting member 71 from cracking in the longitudinal direction.
  • the belt 7 is subjected to a heat treatment such as cooling the belt 7 more than the first wedge 25 or heating the first wedge 25 more than the belt 7, the first wedge Even if the width of the groove of 25 is smaller than the width of the belt 7, the belt 7 can be easily inserted into the groove of the first wedge 25.
  • a heat treatment such as cooling the belt 7 more than the first wedge 25 or heating the first wedge 25 more than the belt 7, the first wedge Even if the width of the groove of 25 is smaller than the width of the belt 7, the belt 7 can be easily inserted into the groove of the first wedge 25.
  • the belt gripper 12 may have a cooling function or a heating function.
  • a cooling pipe or a heater may be attached to the first wedge 25.
  • the height of the protrusion of the second wedge 26 is within a range in which the belt 7 is sandwiched between the first compression surface 25a and the second compression surface 26a and a compressive force in the thickness direction of the belt 7 is applied so that the belt 7 can be gripped. Just set it. If the height of the protrusion of the second wedge 26 is set so that the first wedge 25 and the second wedge 26 do not come into contact with each other in the thickness direction of the belt 7 even if the belt 7 is compressed in the thickness direction, the first wedge 25 All the compressive forces from the second wedge 26 and the second wedge 26 act on the belt 7.
  • the height of the second wedge 26 is set to a height equal to or greater than the value obtained by subtracting the thickness of the belt 7 from the depth of the groove of the first wedge 25 and adding the amount of deformation of the belt 7 during compression. , All the compressive forces from the first wedge 25 and the second wedge 26 act on the belt 7. In this case, it is possible to more reliably prevent the belt 7 from coming off the belt gripper 12.
  • the surface shape and surface texture of the first compression surface 25a, the first side surface 25b, the second side surface 25c, and the second compression surface 26a are not limited.
  • the width of the groove of the first wedge 25 is equal to or less than the width of the belt 7
  • the width of the protrusion of the second wedge 26 is equal to the width of the groove of the first wedge 25, and the widths of the belts 7 7a to 7d. If all four surfaces are covered with the grooves of the first wedge 25 and the protrusions of the second wedge 26 without gaps, the stress generated in the belt 7 becomes close to the hydrostatic pressure state. Then, due to the contact, the pressure in all directions including the direction from the outside in the width direction to the center in the width direction of the belt 7 approaches the belt 7 evenly. Therefore, it is possible to more reliably prevent the load supporting member 71 from cracking in the longitudinal direction. Further, even if an excessive compressive force in the thickness direction acts on the belt 7, the belt 7 can be gripped without being significantly deformed in the thickness direction.
  • the gap ⁇ in the width direction between the groove of the first wedge 25 and the belt 7 is zero or less.
  • t 1 , ⁇ 1 , and E 1 are the thickness of the load supporting member 71, the Poisson's ratio, and the elastic modulus in the X and Y directions, respectively.
  • t 2 and ⁇ 2 are the total thickness and Poisson's ratio of the covering material 72, respectively.
  • W is the length of the load support member 71 in the width direction
  • ⁇ C is the stress in the X direction at which the load support member 71 begins to crack in the longitudinal direction.
  • the Poisson's ratio of the load thickness t 1 and the thickness t 2/2 is comparable around the dressing 72 of the support member 71, sigma C / E 1 is about 1/100, the load bearing member 71 and the cover member 72
  • the width of the groove of the first wedge 25 is the median value of the width dimension of the belt 7, and the dimensional tolerance is about ⁇ 0.5% or less of the width dimension of the load supporting member 71. It has been experimentally confirmed that by applying the belt gripping tool 12 of FIG. 8, the load supporting member 71 can be gripped until the belt 7 is broken by tension without cracking in the longitudinal direction.
  • the shape and surface texture of the contact surface between the housing 20 and the first wedge 25 and the contact surface between the housing 20 and the second wedge 26 are not limited.
  • a lubricant is applied to these contact surfaces or a low friction material is applied. May be pasted.
  • a lubricant is applied to the surfaces of the first receiving member 21 and the second receiving member 22 that receive the reaction force of the compressive force in the thickness direction of the belt 7 from the first wedge 25 and the second wedge 26, the first Seizure of the wedge 25, the second wedge 26, and the housing 20 can be suppressed.
  • the internal dimensions of the belt 7 of the housing 20 in the width direction are not limited as long as the first wedge 25 and the second wedge 26 can be inserted and supported in the housing 20. If the inner dimension of the housing 20 is the same as or slightly larger than the width dimension of the first wedge 25 and the second wedge 26, the misalignment or inclination of the first wedge 25 and the second wedge 26 in the housing 20 Can be reduced. In this case, since the eccentric load and the twisting load acting on the belt 7 are reduced, the belt 7 can be gripped in a state where a uniform load is applied in the longitudinal direction.
  • the housing 20 may be a single component.
  • the housing 20 is composed of a plurality of parts, the belt 7, the first wedge 25, and the second wedge 26 can be easily attached to and detached by disassembling the housing 20.
  • the method of connecting the housing 20 and the connecting member 13 is not limited. For example, as shown in FIG. 6, if the housing 20 and the connecting member 13 are connected by a pin in the width direction of the belt 7, the rotation around the X axis becomes free. Therefore, it is possible to reduce the load around the X-axis that acts on the belt 7 that may occur when the belt 7 is attached to the belt gripper 12.
  • the materials of the first wedge 25, the second wedge 26, and the housing 20 are not limited as long as they can suppress the spread of the belt 7 in the width direction and can grip the belt 7.
  • iron-based materials such as carbon steel, high-tensile steel, rolled steel, stainless steel, and structural alloy steel and plated steel using them as base materials, or materials and alloys such as aluminum, magnesium, titanium, brass, and copper.
  • the material may be used to form the first wedge 25, the second wedge 26, and the housing 20.
  • the method of applying the compressive force in the thickness direction to the belt 7 is not limited.
  • the compressive force in the thickness direction may decrease over time due to creep, stress relaxation, or the like.
  • creep is a phenomenon in which the thickness of the belt 7 decreases with time due to the compressive force in the thickness direction of the belt 7.
  • Stress relaxation is a phenomenon in which the elastic modulus of the belt 7 in the thickness direction decreases with time. If a wedge mechanism is used as a method of applying a compressive force in the thickness direction to the belt 7, the first wedge 25 and the second wedge 26 move in the housing 20 according to changes in the thickness and elastic modulus of the belt 7. Therefore, a constant gripping force can be maintained with respect to the belt 7.
  • FIG. 9 is a cross-sectional view of a first modification of the belt gripper according to the first embodiment.
  • FIG. 9 is a cross-sectional view taken along the line CC of FIG.
  • the first compression surface 25a and the second compression surface 26a have irregularities parallel to the longitudinal direction of the belt 7.
  • the upper surface 7d of the belt and the lower surface 7a of the belt are flat.
  • the belt 7 has a rectangular cross section. After the belt 7 receives a compressive force in the thickness direction, the covering material 72 is deformed along the first compression surface 25a and the second compression surface 26a.
  • the first side surface 25b and the second side surface 25c suppress the covering material 72 from spreading in the width direction. To do. Therefore, it is possible to more reliably suppress the load supporting member 71 from cracking in the longitudinal direction than when the first compression surface 25a and the second compression surface 26a are flat.
  • FIG. 10 is a cross-sectional view of a second modification of the belt gripper according to the first embodiment.
  • FIG. 10 is a cross-sectional view taken along the line CC of FIG. In FIG. 10, the distance between the first compression surface 25a and the second compression surface 26a decreases from the center in the width direction of the belt 7 toward the end in the width direction of the belt 7.
  • the normal direction of the first compression surface 25a and the second compression surface 26a is not parallel to the thickness direction of the belt 7, but the component toward the center in the width direction of the belt 7. Have. Therefore, when the belt 7 is compressed in the thickness direction, not only the first side surface 25b and the second side surface 25c but also the first compression surface 25a and the second compression surface 26a exert a force toward the center of the belt 7 in the width direction. It acts on the covering material 72. As a result, it is possible to more reliably suppress the load supporting member 71 from cracking in the longitudinal direction than when the first compression surface 25a and the second compression surface 26a are flat.
  • first compression surface 25a or the second compression surface 26a may be flattened.
  • the surfaces of the first wedge 25 and the second wedge 26 that come into contact with the belt 7 may be provided with irregularities parallel to the width direction of the belt 7. In this case, the coefficient of friction of the belt 7 with the belt 7 in the longitudinal direction increases, so that the belt 7 can be made difficult to come off from the belt gripper 12. Further, in the first wedge 25 and the second wedge 26, the friction coefficient with the belt 7 may be increased by forming the surface of the belt 7 with a material having a high friction different from that of the base material. For example, the surfaces of the first wedge 25 and the second wedge 26 may be made of a resin such as rubber that is harder than the belt 7.
  • the shape of the covering material 72 of the belt 7 is not limited.
  • the covering material 72 may be flat.
  • the covering material 72 may have a shape along the first wedge 25 and the second wedge 26.
  • the covering material 72 is formed. The spread of the belt 7 of the 72 in the width direction can be suppressed more reliably. As a result, the load supporting member 71 can be more reliably suppressed from cracking in the longitudinal direction.
  • FIG. 11 is a cross-sectional view of a first modification of the belt to which the belt gripper according to the first embodiment is applied.
  • FIG. 11 is a cross-sectional view taken along the line AA of FIG.
  • the plurality of load supporting members 71 are formed in a rectangular shape.
  • the distance W is the distance between the ends of the load supporting members 71 at both ends located in the width direction of the belt 7 in the width direction.
  • FIG. 12 is a cross-sectional view of a second modification of the belt to which the belt gripper according to the first embodiment is applied.
  • FIG. 12 is a cross-sectional view taken along the line AA of FIG. In FIG. 12, the plurality of load supporting members 71 are formed in a circular shape.
  • the distance W is the distance between the ends of the load supporting members 71 at both ends located in the width direction of the belt 7 in the width direction.
  • the first compression surface 25a and the second compression surface 26a have a width larger than that of the load support member 71 in the width direction of the belt 7.
  • the first compression surface 25a and the second compression surface 26a have a width of a distance W or more.
  • the compressive force acting on the load support member 71 in the thickness direction is the first compression surface 25a and the second compression surface. There is no discontinuity at the boundary with the surface 26a. Therefore, the compressive force acting on the load supporting member 71 in the thickness direction can be made uniform. As a result, the load supporting member 71 can be more reliably suppressed from cracking in the longitudinal direction.
  • FIG. 13 is a cross-sectional view of a third modification of the belt gripper according to the first embodiment.
  • the first compression surface 25a and the second compression surface 26a have a width larger than that of the load support member 71 in the width direction of the belt 7.
  • the first compression surface 25a and the second compression surface 26a do not include all the load supporting members 71.
  • the first compression surface 25a and the second compression surface 26a have small grooves. Even in this case, it is possible to prevent the load supporting member 71 from cracking in the longitudinal direction.
  • FIG. 14 is a cross-sectional view of a fourth modification of the belt gripper according to the first embodiment.
  • the first compression surface 25a and the second compression surface 26a have a width larger than that of the load support member 71 in the width direction of the belt 7.
  • the first compression surface 25a and the second compression surface 26a have small grooves, but the first compression surface 25a and the second compression surface 26a include all the load supporting members 71. Also in this case, the same effect as that of the compression surface having no small groove on the first compression surface 25a and the second compression surface 26a as shown in FIG. 8 can be obtained.
  • FIG. 15 is a cross-sectional view of a fifth modification of the belt gripper according to the first embodiment.
  • FIG. 15 is a cross-sectional view taken along the line BB in FIG.
  • the belt gripper 12 of FIG. 15 includes an intaglio plate 30 instead of the first wedge 25.
  • the intaglio plate 30 is not wedge-shaped.
  • the intaglio plate 30 has a first compression surface 30a, a first side surface, a second side surface, and a first receiving surface 30d.
  • the first compression surface 30a, the first side surface, the second side surface, and the first receiving surface 30d are the first compression surface 25a, the first side surface 25b, the second side surface 25c, and the first receiving surface of the first wedge 25 in FIG. 7, respectively. Corresponds to surface 25d.
  • the first receiving surface 30d of the concave plate 30 is parallel to the first compression surface 30a.
  • the surface in contact with the first receiving surface 30d is parallel to the first receiving surface 30d.
  • the spread of the covering material 72 in the width direction is suppressed. Therefore, even if the belt 7 receives a compressive force in the thickness direction, it is possible to prevent the load supporting member 71 from cracking in the longitudinal direction.
  • the belt 7, the intaglio plate 30, and the second wedge 26 are integrated and move in the housing 20. Therefore, slip does not occur between the belt 7 and the first wedge 25 and between the belt 7 and the intaglio plate 30. As a result, the belt 7 can be gripped without damaging the covering material 72 on the surface of the belt 7.
  • the intaglio plate 30 does not have an inclination. Therefore, the processing cost of the intaglio plate 30 can be reduced as compared with the first wedge 25 of FIG.
  • a wedge-shaped first wedge 25 and a member in which the second compression surface 26a and the second receiving surface 26d are parallel to each other may be combined instead of the second wedge 26.
  • FIGS. 8 to 10 and 13 to 15 if the projection views of the first compression surface 25a and the second compression surface 26a on the ZX plane are the same at the positions of the load support member 71, the load support member 71 No shearing in the thickness direction and Y-axis direction of the belt 7 acts on the belt 7. In this case, it is possible to prevent the load supporting member 71 from cracking in the longitudinal direction due to the shearing force.
  • FIG. 16 is a front view of a sixth modification of the belt gripper according to the first embodiment.
  • FIG. 17 is a cross-sectional view taken along the line DD of FIG.
  • the belt gripper 12 is composed of an intaglio plate 30, a convex plate 31, and a fastening bolt 32.
  • the belt gripper 12 does not include a housing.
  • the intaglio plate 30 has a first compression surface 30a, a first side surface, a second side surface, a bolt hole, a first receiving surface 30d, and a pin hole 30f.
  • the first compression surface 30a, the first side surface, and the second side surface correspond to the first compression surface 25a, the first side surface 25b, and the second side surface 25c of the first wedge 25 in FIG. 7, respectively.
  • the first receiving surface 30d is a facing surface of the first compression surface 30a.
  • the first receiving surface 30d is parallel to the first compression surface 30a.
  • the bolt holes penetrate the intaglio plate 30 in the thickness direction of the belt 7.
  • the pin hole 30f passes through the pin 14 penetrating in the thickness direction of the belt 7.
  • the intaglio plate 30 is different from the first wedge 25 in FIG. 6 in that the first receiving surface 30d of the intaglio plate 30 is parallel to the first compression surface 30a and has a bolt hole and a pin hole 30f.
  • the convex plate 31 has a second compression surface 31a, a second receiving surface 31b, a female screw hole, and a pin hole.
  • the second compression surface 31a corresponds to the second compression surface 26a of the second wedge 26 in FIG. 7.
  • the second receiving surface 31b is a facing surface of the second compression surface 31a.
  • the second receiving surface 31b is parallel to the second compression surface 31a.
  • the female screw hole penetrates in the thickness direction of the belt 7.
  • the pin hole penetrates in the belt thickness direction.
  • the convex plate 31 is different from the second wedge 26 in FIG. 6 in that the second receiving surface 31b has a point parallel to the second compression surface 31a and a female screw hole and a pin hole.
  • the connecting member 13 has a pin hole 13a in the thickness direction of the belt 7.
  • the concave plate 30 and the convex plate 31 are connected to the connecting member 13.
  • the fastening bolt is tightened while being passed through the bolt hole of the intaglio plate 30 and the female screw hole of the convex plate 31, so that the concave plate 30 and the convex plate are tightened. 31 applies a compressive force in the thickness direction to the belt 7.
  • the belt gripper 12 does not require the housing 20. Therefore, not only can the belt gripping tool 12 be made lighter, but also the processing cost of the belt gripping tool 12 can be reduced.
  • FIG. 18 is a cross-sectional view of the belt gripper according to the second embodiment.
  • the same or corresponding parts as those of the first embodiment are designated by the same reference numerals. The explanation of the relevant part is omitted.
  • FIG. 18 is a cross-sectional view taken along the line CC of FIG. In FIG. 18, the housing 20 is not shown.
  • first side surface 25b and the second side surface 25c are composed of separate parts.
  • the belt gripper 12 of the second embodiment is composed of a housing 20, a first wedge 25, a second wedge 26, a first side wall 27, and a second side wall 28.
  • the first side wall 27 has a first side wall surface 27a and a bolt hole 27b.
  • the first side wall surface 27a faces the belt side surface 7b (not shown in FIG. 18) of the belt 7.
  • the bolt hole 27b penetrates the first side wall 27 in the thickness direction of the belt 7.
  • the second side wall 28 has a second side wall surface 28a and a bolt hole 28b.
  • the second side wall surface 28a faces the belt side surface 7c of the belt 7.
  • the bolt hole 28b penetrates the second side wall 28 in the thickness direction of the belt 7.
  • the first side wall surface 27a and the second side wall surface 28a correspond to the first side surface 25b and the second side surface 25c of the first embodiment, respectively.
  • the concave groove is formed by the first compression surface 25a, the first side wall surface 27a, and the second side wall surface 28a.
  • the first side wall surface 27a and the second side wall surface 28a are in contact with the covering material 72 of the belt 7 at least in a state where the belt 7 receives a compressive force in the thickness direction.
  • the first side wall 27 and the second side wall 28 are fixed to the first wedge 25 by fixing bolts 15 using bolt holes 27b and bolt holes 28b, respectively.
  • the fixing bolt 15 does not come into contact with the second wedge 26.
  • the first side wall surface 27a and the second side wall surface 28a are composed of separate parts. Therefore, the distance between the first side wall surface 27a and the second side wall surface 28a, which is the width of the concave groove, is finely adjusted by the clearance between the fixing bolt 15 and the bolt hole 27b and the clearance between the fixing bolt 15 and the bolt hole 28b. can do.
  • the belt 7 can be adjusted by adjusting the fixing positions of the first side wall 27 and the second side wall 28 in the state before the belt 7 is compressed in the thickness direction.
  • the first side wall 27 and the second side wall 28 can be brought into contact with each other.
  • a force from the outside in the width direction to the center portion in the width direction of the belt 7 acts on the belt 7, and as a result, the load supporting member 71 moves in the longitudinal direction. It can suppress cracking.
  • the belt 7 is in the state before the belt 7 is compressed in the thickness direction in the belt width direction (from the outside in the width direction to the center in the width direction of the belt 7). It is possible to apply a compressive force (in the direction toward the part). As a result, the spread of the covering material 72 can be suppressed more reliably.
  • the bolt hole 27b and the bolt hole 28b may be elongated holes in the width direction of the belt 7. In this case, even if the width dimension of the belt 7 is significantly changed, the same belt gripper 12 can be used.
  • the part that forms the concave groove a separate part, the shape of each part becomes simple. Therefore, the processing cost of each part can be reduced.
  • the materials of the first side wall 27 and the second side wall 28 are not limited.
  • first side wall surface 27a and the second side wall surface 28a forming the groove may be a separate part.
  • the first side wall 27 and the second side wall 28 do not move in the direction in which the width of the belt 7 widens, the first side wall 27 and the second side wall 28
  • the method of fixing with is not limited.
  • a pin may be used instead of the fixing bolt 15.
  • FIG. 19 is a cross-sectional view of a first modification of the belt gripper according to the second embodiment.
  • FIG. 19 is a cross-sectional view taken along the line CC of FIG. In FIG. 19, the housing 20 is not shown. As shown in FIG. 19, the first wedge 25 has a first side wall support portion 25e and a second side wall support portion 25f.
  • the first side wall support portion 25e prevents the first side wall 27 from moving in the ⁇ X direction by coming into contact with the first side wall receiving surface 27c which is the facing surface of the first side wall surface 27a.
  • the second side wall support portion 25f prevents the second side wall 28 from moving in the + X direction by coming into contact with the second side wall receiving surface 28c, which is the facing surface of the second side wall surface 28a.
  • the first side wall 27 and the second side wall 28 are held by the frictional force generated by the load in the X-axis direction from the belt 7.
  • the width of the groove into which the belt 7 is inserted can be adjusted by changing the dimensions of the first side wall 27 and the second side wall 28 in the width direction of the belt 7. Further, the work of fixing the first side wall 27 and the second side wall 28 with bolts or the like can be omitted.
  • FIG. 20 is a cross-sectional view of a second modification of the belt gripper according to the second embodiment.
  • FIG. 20 is a cross-sectional view taken along the line CC of FIG. In FIG. 20, the housing 20 is not shown.
  • the first wedge 25 has a first side wall support portion 25e and a second side wall support portion 25f.
  • the first side wall support portion 25e does not come into contact with the first side wall 27.
  • the second side wall support portion 25f does not come into contact with the second side wall 28.
  • the first side wall support portion 25e has a female screw hole 25 g.
  • the female screw hole 25 g penetrates in the width direction of the belt 7.
  • the fixing bolt 16 is passed through the female screw hole 25 g.
  • the tip of the fixing bolt 16 comes into contact with the first side wall receiving surface 27c.
  • the second side wall support portion 25f has a female screw hole 25 g.
  • the female screw hole 25 g penetrates in the width direction of the belt 7.
  • the fixing bolt 16 is passed through the female screw hole 25 g.
  • the tip of the fixing bolt 16 comes into contact with the second side wall receiving surface 28c.
  • the first side wall 27 and the second side wall 28 are not fixed to the first wedge 25 but are held by the frictional force generated by the load in the X-axis direction from the belt 7.
  • the force in the width direction of the belt 7 acting on the first side wall 27 and the second side wall 28 is applied to the first side wall support portion 25e and the second side wall support portion via the fixing bolt 15. Receive at 25f.
  • the width of the groove into which the belt 7 is inserted can be easily adjusted with the fixing bolt 16. Further, by inserting the belt 7 into the groove and then turning the fixing bolt 16, a compressive force in the belt width direction (direction from the outside in the width direction of the belt 7 toward the center in the width direction) can be applied to the covering material 72. .. Therefore, it is possible to more reliably prevent the load supporting member 71 from cracking in the longitudinal direction.
  • FIGS. 21 and 22 are cross-sectional views of a third modification of the belt gripper according to the second embodiment.
  • FIG. 21 is a cross-sectional view taken along the line CC of FIG.
  • FIG. 22 is a cross-sectional view taken along the line EE of FIG.
  • the housing 20 is not shown.
  • the distance between the first side wall receiving surface 27c and the first side wall surface 27a decreases in the tension direction (+ Z axis direction) of the belt 7. Tilt in the direction.
  • the surface of the first side wall 27 facing the first side wall receiving surface 27c is parallel to the first side wall receiving surface 27c.
  • the second side wall receiving surface 28c is inclined in the direction in which the distance from the second side wall surface 28a becomes smaller in the tension direction (+ Z axis direction) of the belt 7.
  • the surface of the second side wall 28 facing the second side wall receiving surface 28c is parallel to the second side wall receiving surface 28c.
  • the distance between the first side wall surface 27a and the second side wall surface 28a is adjusted by moving the positions of the first side wall 27 and the second side wall 28 in the Z-axis direction. be able to. Therefore, it is possible to easily cope with variations in the width direction of the belt 7, changes in the dimensions of the belt 7, and the like.
  • FIGS. 23 and 24 are cross-sectional views of a fourth modification of the belt gripper according to the second embodiment.
  • FIG. 23 is a cross-sectional view taken along the line CC of FIG.
  • FIG. 24 is a cross-sectional view taken along the line FF of FIG. 23.
  • the first side wall receiving surface 27c and the second side wall receiving surface 28c are in contact with the first lateral member 23 and the second lateral member 24 of the housing 20 instead of the first wedge 25.
  • the portion of the first lateral member 23 that comes into contact with the first side wall receiving surface 27c is parallel to the first side wall receiving surface 27c.
  • the coefficient of friction between the first side wall surface 27a and the belt 7 is larger than the coefficient of friction between the first side wall receiving surface 27c and the housing 20.
  • the portion of the second lateral member 24 that comes into contact with the second side wall receiving surface 28c is parallel to the second side wall receiving surface 28c.
  • the first side wall 27 and the second side wall 28 do not receive a force in the thickness direction of the belt 7 from the first wedge 25 and the second wedge 26.
  • the belt 7 when the belt 7 receives a load in the longitudinal direction, the belt 7, the first side wall 27, and the second side wall 28 move integrally in the housing 20. As the tension acting on the belt 7 increases, the force acting on the belt 7 from the first side wall 27 and the second side wall 28 in the width center direction increases. Therefore, it is possible to more reliably prevent the load supporting member 71 from cracking in the longitudinal direction.
  • the inclination of the first side wall receiving surface 27c is not limited. However, if the inclination of the first side wall receiving surface 27c is set to be equal to or greater than the inclination of the first receiving surface 25d of the first wedge 25, it is possible to prevent the first side wall 27 from excessively compressing the belt 7 in the width direction.
  • the inclination of the second side wall receiving surface 28c is not limited. However, if the inclination of the second side wall receiving surface 28c is set to be equal to or greater than the inclination of the second receiving surface 26d of the second wedge 26, it is possible to prevent the second side wall 28 from excessively compressing the belt 7 in the width direction.
  • FIG. 25 is a cross-sectional view of the belt gripper according to the third embodiment.
  • the same or corresponding parts as those of the first embodiment are designated by the same reference numerals. The explanation of the relevant part is omitted.
  • FIG. 25 is a cross-sectional view taken along the line CC of FIG. In FIG. 25, the housing 20 is not shown.
  • the first side wall 27 and the second side wall 28 have a rectangular cross section.
  • the thickness of the first side wall 27 and the second side wall 28 is about the same as that of the belt 7.
  • the first side wall 27 and the second side wall 28 receive a compressive force in the thickness direction of the belt 7 together with the belt 7 from the first wedge 25 and the second wedge 26.
  • the first side wall 27 and the second side wall 28 are fixed by being sandwiched between the first wedge 25 and the second wedge 26.
  • the elastic modulus of the belt 7 between the first side wall 27 and the second side wall 28 in the Y-axis direction is equal to or less than the elastic modulus in the thickness direction of the belt 7.
  • the belt 7 when the belt 7 is compressed in the thickness direction, the belt 7 is in the width center direction from the first side wall surface 27a and the second side wall surface 28a (from the outside in the width direction of the belt 7 to the width direction). Receives the reaction force (in the direction toward the center). Therefore, it is possible to prevent the load supporting member 71 from cracking in the longitudinal direction.
  • the belt 7 Due to the compressive force of the thickness, the belt 7 expands in the width direction between the first side wall 27 and the second side wall 28 due to the influence of the Poisson's ratio. Therefore, the belt 7 comes into early contact with the first side wall 27 and the second side wall 28 in the process of being compressed. As a result, in the covering material 72, a force acts from the outside in the width direction to the center portion in the width direction of the belt 7, and the spread of the belt 7 in the width direction can be suppressed.
  • first side wall 27 and the second side wall 28 are not fixed by the first wedge 25 and the second wedge 26 before applying the compressive force in the thickness direction to the belt 7. Therefore, the distance between the first side wall surface 27a and the second side wall surface 28a can be easily adjusted.
  • first wedge 25 and the second wedge 26 have simple shapes without grooves and protrusions. Therefore, the processing cost of the first wedge 25 and the second wedge 26 can be reduced.
  • the first side wall 27 and the second side wall 28 receive a force in the width direction from the belt 7. Therefore, it is desirable that the friction coefficient in the width direction of the belt 7 is large at the contact surface between the first side wall 27 and the first wedge 25 and between the second side wall 28 and the second wedge 26.
  • the contact surface may be provided with irregularities to increase the coefficient of friction.
  • an adhesive may be applied to the contact surface between the first side wall 27 and the first wedge 25 to join the first side wall 27 and the first wedge 25.
  • an adhesive may be applied to the contact surface between the second side wall 28 and the second wedge 26 to join the second side wall 28 and the second wedge 26.
  • the first side wall 27 and the second side wall 28 can be fixed to the first wedge 25 and the second wedge 26 by the compressive force in the thickness direction of the belt 7, the first side wall 27 and the second side wall 27 can be fixed.
  • the thickness with 28 is not limited. By changing the thickness of the first side wall 27 and the second side wall 28, the compressive force in the width direction acting on the belt 7 can be adjusted. For example, if the thickness of the first side wall 27 and the second side wall 28 is made larger than the thickness of the belt 7, the compressive force in the width direction acting on the belt 7 can be increased.
  • the elastic modulus in the thickness direction of the belt 7 is not limited in the first side wall 27 and the second side wall 28.
  • the magnitude of the compressive force in the width direction acting on the belt 7 can be adjusted. For example, if the elastic modulus of the first side wall 27 and the second side wall 28 is increased, the compressive force in the width direction acting on the belt 7 can be increased.
  • the elastic modulus in the thickness direction of the first side wall 27 and the second side wall 28 When the elastic modulus in the thickness direction of the first side wall 27 and the second side wall 28 is equal to or higher than the elastic modulus in the thickness direction of the belt 7, the first side wall 27 and the second side wall 28 serve as stoppers against the load in the thickness direction. This makes it difficult to firmly grip the belt 7. Therefore, it is desirable that the elastic modulus in the thickness direction of the first side wall 27 and the second side wall 28 is smaller than the elastic modulus in the Y-axis direction of the belt 7.
  • the covering material 72 has a belt width direction. It may not be possible to suppress the spread of the load supporting member 71 and prevent the load supporting member 71 from cracking in the longitudinal direction.
  • the elastic modulus of the first side wall 27 and the second side wall 28 is 0.1 times to 1 the elastic modulus in the thickness direction of the belt 7. It may be set in the double range. In this case, it has been experimentally confirmed that the load supporting member 71 can be prevented from cracking in the longitudinal direction.
  • the materials of the first side wall 27 and the second side wall 28 are not limited.
  • iron-based materials such as carbon steel, high-tensile steel, rolled steel, stainless steel, and structural alloy steel and plated steel using them as base materials, or materials and alloys such as aluminum, magnesium, titanium, brass, and copper.
  • the material may be used to form the first side wall 27 and the second side wall 28.
  • the first side wall is made of a thermoplastic resin such as polyethylene or polypropylene, a thermoplastic elastomer such as styrene-based, urethane-based, polyester-based, or polyamide-based, or a resin material such as a thermosetting elastomer (rubber) such as chloroprene rubber or acrylic rubber.
  • 27 and the second side wall 28 may be formed.
  • the first side wall 27 and the second side wall 28 may be formed of a composite material of fiber and resin.
  • FIG. 26 is a cross-sectional view of a first modification of the belt gripper according to the third embodiment.
  • FIG. 26 is a cross-sectional view taken along the line CC of FIG. In FIG. 26, the housing 20 is not shown.
  • the first side wall 27 has a first side wall surface 27a, a first side wall lower surface 27d, and a first side wall upper surface 27e.
  • the first side wall surface 27a is a surface in contact with the belt side surface 7b of the belt 7.
  • the lower surface 27d of the first side wall is a surface in contact with the first wedge 25.
  • the upper surface 27e of the first side wall is a surface in contact with the second wedge 26.
  • the lower surface of the first side wall 27d and the upper surface of the first side wall 27e are tilted from each other so that the distance between the lower surface of the first side wall 27d and the upper surface of the first side wall 27e decreases from the center in the width direction of the belt 7 toward the width end.
  • the dimension of the belt 7 in the thickness direction is about the same as the thickness of the belt 7.
  • the second side wall 28 has a second side wall surface 28a, a second side wall lower surface 28d, and a second side wall upper surface 28e.
  • the second side wall surface 28a is a surface in contact with the belt side surface 7c of the belt 7.
  • the lower surface 28d of the second side wall is a surface in contact with the first wedge 25.
  • the upper surface 28e of the second side wall is a surface in contact with the second wedge 26.
  • the second side wall lower surface 28d and the second side wall upper surface 28e are inclined to each other so that the distance between the second side wall lower surface 28d and the second side wall upper surface 28e decreases from the center in the width direction of the belt 7 toward the width end.
  • the dimension of the belt 7 in the thickness direction is about the same as the thickness of the belt 7.
  • the upper portion of the first wedge 25 has a surface parallel to the lower surface 27d of the first side wall on one side of the first compression surface 25a.
  • the upper portion of the first wedge 25 has a surface parallel to the lower surface 28d of the second side wall on the other side of the first compression surface 25a.
  • the lower portion of the second wedge 26 has a surface parallel to the upper surface 27e of the first side wall on one side of the second compression surface 26a.
  • the lower portion of the second wedge 26 has a surface parallel to the upper surface 28e of the second side wall on the other side of the second compression surface 26a.
  • the first wedge 25 and the second wedge 26 cause the first side wall 27 and the second side wall 28 to flow in the width direction to the belt 7.
  • a force toward the center a force from the outside of the belt 7 in the width direction to the center in the width direction acts. Therefore, it is possible to prevent the load supporting member 71 from cracking in the longitudinal direction.
  • the first side wall is formed.
  • the 27 and the second side wall 28 move in the direction of contact with the belt 7 due to the compressive force in the thickness direction of the belt 7. Therefore, the belt 7 comes into contact with the first side wall 27 and the second side wall 28 at an early stage of compression in the thickness direction. As a result, the compression force in the width direction can be applied to the belt 7 at an early stage.
  • FIG. 27 is a cross-sectional view of the belt gripper according to the fourth embodiment.
  • the same or corresponding parts as those of the first embodiment are designated by the same reference numerals. The explanation of the relevant part is omitted.
  • FIG. 27 is a cross-sectional view taken along the line CC in FIG. In FIG. 27, the housing 20 is not shown.
  • the belt gripper 12 of the fourth embodiment corresponds to the case where the belt gripper 12 in FIG. 9 of the first embodiment does not have the first side wall 27 and the second side wall 28.
  • the first compression surface 25a and the second compression surface 26a have irregularities parallel to the longitudinal direction of the belt 7.
  • the unevenness between the first compression surface 25a and the second compression surface 26a suppresses the spread of the covering material 72 of the belt 7 in the width direction. Therefore, it is possible to prevent the load supporting member 71 from cracking in the longitudinal direction.
  • the load supporting member 71 can be suppressed from cracking in the longitudinal direction by about 1/3 times as compared with the case where the first compression surface 25a and the second compression surface 26a have no irregularities.
  • the belt gripper 12 does not have a side wall. Therefore, even if the dimension of the belt 7 in the width direction changes, the belt 7 can be easily gripped.
  • FIG. 28 is a cross-sectional view of a first modification of the belt gripper according to the fourth embodiment.
  • FIG. 28 is a cross-sectional view taken along the line CC in FIG. In FIG. 28, the housing 20 is not shown.
  • the first modification of the belt gripper 12 corresponds to the case where the belt gripper 12 in FIG. 10 of the first embodiment does not have the first side wall 27 and the second side wall 28.
  • the elevator roping method is not limited. Further, the configurations of the first to fourth embodiments may be combined as appropriate. Further, the belt gripper 12 of the first to fourth embodiments or the belt gripper 12 which appropriately combines the configurations of the first to fourth embodiments may be applied to an elevator without a machine room.
  • the belt gripping device according to the present invention can be used for an elevator.

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  • Clamps And Clips (AREA)
  • Belt Conveyors (AREA)
  • Manipulator (AREA)

Abstract

Provided is a belt holding tool capable of firmly holding a belt while suppressing breakage of a load support member in the longitudinal direction of the belt. This belt holding tool comprises: a first pressing member having a recess-like groove that is formed by a first compression surface located on one side in a thickness direction of a belt, a first lateral wall surface located on one side in a width direction of the belt, and a second lateral wall surface located on the other side in the width direction of the belt; and a second pressing member that is located on the other side in the thickness direction of the belt and that has a second compression surface for imparting a compression force in the thickness direction to the belt by sandwiching the belt together with the first compression surface. The first compression surface and the second compression surface each have a width larger than an end-to-end distance in the width direction of the load support member located at both ends in the width direction of the belt. When the belt has received a compression force in the thickness direction in a state of being sandwiched by the first compression surface and the second compression surface, the first lateral wall surface and the second lateral wall surface are brought into contact with a coated material in the width direction of the belt, and a force from the outer side of the width direction of the belt to the center in the width direction of the belt is applied to the belt.

Description

ベルト把持具Belt gripper
　この発明は、ベルト把持具に関する。 The present invention relates to a belt gripper.
　特許文献１は、ベルト把持具を開示する。当該ベルト把持具によれば、荷重支持部材の表面を柔軟な樹脂で被覆した強化繊維ベルトを把持し得る。 Patent Document 1 discloses a belt gripper. According to the belt gripper, a reinforcing fiber belt in which the surface of the load supporting member is coated with a flexible resin can be gripped.
日本特開２０１４－１２９１８２号公報Japanese Patent Application Laid-Open No. 2014-129182
　しかしながら、特許文献１に記載のベルト把持具により強化繊維ベルトの厚み方向に圧縮力を与えると、異方性の大きい強化繊維ベルトにおいては、被覆材が幅方向に大きく変形する。このため、荷重支持部材に作用する幅方向の引張力が増大し、荷重支持部材が強化繊維ベルトの長手方向に割れ得る。 However, when a compressive force is applied in the thickness direction of the reinforcing fiber belt by the belt gripper described in Patent Document 1, the covering material is significantly deformed in the width direction in the reinforcing fiber belt having a large anisotropy. Therefore, the tensile force in the width direction acting on the load supporting member increases, and the load supporting member may crack in the longitudinal direction of the reinforcing fiber belt.
　この発明は、上述の課題を解決するためになされた。この発明の目的は、荷重支持部材がベルトの長手方向に割れることを抑制しつつ、ベルトを強固に把持することができるベルト把持具を提供することである。 This invention was made to solve the above-mentioned problems. An object of the present invention is to provide a belt gripper capable of firmly gripping a belt while suppressing the load supporting member from cracking in the longitudinal direction of the belt.
　この発明に係るベルト把持具は、長手方向の荷重を負担する強化繊維を含む荷重支持部材と前記荷重支持部材の表面を覆う被覆材とから構成される扁平形状の断面を有するベルトに対し、前記ベルトの厚み方向の一側に位置する第１圧縮面と前記ベルトの幅方向の一側に位置する第１側壁面と前記ベルトの幅方向の他側に位置する第２側壁面とから形成される凹状の溝を有する第１押付け部材と、前記ベルトの厚み方向の他側に位置し、前記ベルトを前記第１圧縮面とで挟むことで、前記ベルトに厚み方向の圧縮力を与える第２圧縮面を有する第２押付け部材と、を備え、前記第１圧縮面と前記第２圧縮面とは、前記ベルトの幅方向の両端に位置する前記荷重支持部材の幅方向の端間距離よりも大きい幅を有し、前記第１側壁面と前記第２側壁面とは、前記ベルトが前記第１圧縮面と前記第２圧縮面とで挟まれた状態で厚み方向に圧縮力を受けた際に、前記ベルトの幅方向において前記被覆材と接触し、前記ベルトの幅方向外側から幅方向中央への力が前記ベルトに作用する。 The belt gripper according to the present invention relates to a belt having a flat cross section composed of a load supporting member including a reinforcing fiber that bears a load in the longitudinal direction and a covering material that covers the surface of the load supporting member. It is formed from a first compression surface located on one side in the thickness direction of the belt, a first side wall surface located on one side in the width direction of the belt, and a second side wall surface located on the other side in the width direction of the belt. A second pressing member having a concave groove and a second pressing member located on the other side of the belt in the thickness direction and sandwiching the belt with the first compression surface to give a compressive force in the thickness direction to the belt. A second pressing member having a compression surface is provided, and the first compression surface and the second compression surface are larger than the widthwise end distance of the load supporting member located at both ends in the width direction of the belt. The first side wall surface and the second side wall surface have a large width, and when the belt receives a compressive force in the thickness direction while being sandwiched between the first compression surface and the second compression surface. In addition, it comes into contact with the covering material in the width direction of the belt, and a force from the outside in the width direction to the center in the width direction of the belt acts on the belt.
　この発明に係るベルト把持具は、長手方向の荷重を負担する強化繊維を含む荷重支持部材と前記荷重支持部材の表面を覆う被覆材とから構成される扁平形状の断面を有するベルトに対し、前記ベルトの厚み方向の一側に位置する第１圧縮面を有する第１押付け部材と、前記ベルトの厚み方向の他側に位置し、前記ベルトを前記第１圧縮面とで挟むことで、前記ベルトに厚み方向の圧縮力を与える第２圧縮面を有する第２押付け部材と、を備え、前記第１圧縮面と前記第２圧縮面とのうちの少なくとも一方は、前記ベルトの幅方向の中央側に向かう分力を前記ベルトに作用させる。 The belt gripper according to the present invention refers to a belt having a flat cross section composed of a load supporting member including a reinforcing fiber that bears a load in the longitudinal direction and a covering material that covers the surface of the load supporting member. The belt is sandwiched between a first pressing member having a first compression surface located on one side in the thickness direction of the belt and the belt located on the other side in the thickness direction of the belt and sandwiching the belt with the first compression surface. A second pressing member having a second compression surface that gives a compressive force in the thickness direction to the belt, and at least one of the first compression surface and the second compression surface is on the center side in the width direction of the belt. The component force toward is applied to the belt.
　これらの発明によれば、荷重支持部材がベルトの長手方向に割れることを抑制しつつ、ベルトを強固に把持することができる。 According to these inventions, the belt can be firmly gripped while suppressing the load supporting member from cracking in the longitudinal direction of the belt.
実施の形態１におけるベルト把持具が適用されるエレベータの構成図である。It is a block diagram of the elevator to which the belt gripper according to Embodiment 1 is applied. 実施の形態１におけるベルト把持具が適用されるベルトの端部を示す斜視図である。It is a perspective view which shows the end part of the belt to which the belt gripper according to Embodiment 1 is applied. 図２のＡ－Ａ線での断面図である。FIG. 2 is a cross-sectional view taken along the line AA of FIG. 図２のＡ－Ａ線での断面における荷重支持部材の拡大図である。It is an enlarged view of the load support member in the cross section in line AA of FIG. 実施の形態１におけるベルト把持具の正面図である。It is a front view of the belt gripper in Embodiment 1. FIG. 実施の形態１におけるベルト把持具の右側面図である。It is a right side view of the belt gripper in Embodiment 1. FIG. 図６のＢ－Ｂ線での断面図である。FIG. 6 is a cross-sectional view taken along the line BB of FIG. 図６のＣ－Ｃ線での断面図である。FIG. 6 is a cross-sectional view taken along the line CC of FIG. 実施の形態１におけるベルト把持具の第１変形例の断面図である。It is sectional drawing of the 1st modification of the belt gripping tool in Embodiment 1. FIG. 実施の形態１におけるベルト把持具の第２変形例の断面図である。It is sectional drawing of the 2nd modification of the belt gripping tool in Embodiment 1. FIG. 実施の形態１におけるベルト把持具が適用されるベルトの第１変形例の断面図である。FIG. 5 is a cross-sectional view of a first modification of the belt to which the belt gripper according to the first embodiment is applied. 実施の形態１におけるベルト把持具が適用されるベルトの第２変形例の断面図である。FIG. 5 is a cross-sectional view of a second modification of the belt to which the belt gripper according to the first embodiment is applied. 実施の形態１におけるベルト把持具の第３変形例の断面図である。It is sectional drawing of the 3rd modification of the belt gripping tool in Embodiment 1. FIG. 実施の形態１におけるベルト把持具の第４変形例の断面図である。It is sectional drawing of the 4th modification of the belt gripping tool in Embodiment 1. FIG. 実施の形態１におけるベルト把持具の第５変形例の断面図である。It is sectional drawing of the 5th modification of the belt gripping tool in Embodiment 1. FIG. 実施の形態１におけるベルト把持具の第６変形例の正面図である。It is a front view of the 6th modification of the belt gripper in Embodiment 1. FIG. 図１６のＤ－Ｄ線での断面図である。16 is a cross-sectional view taken along the line DD of FIG. 実施の形態２におけるベルト把持具の断面図である。It is sectional drawing of the belt gripping tool in Embodiment 2. FIG. 実施の形態２におけるベルト把持具の第１変形例の断面図である。FIG. 5 is a cross-sectional view of a first modification of the belt gripper according to the second embodiment. 実施の形態２におけるベルト把持具の第２変形例の断面図である。It is sectional drawing of the 2nd modification of the belt gripping tool in Embodiment 2. FIG. 実施の形態２におけるベルト把持具の第３変形例の断面図である。It is sectional drawing of the 3rd modification of the belt gripping tool in Embodiment 2. FIG. 実施の形態２におけるベルト把持具の第３変形例の断面図である。It is sectional drawing of the 3rd modification of the belt gripping tool in Embodiment 2. FIG. 実施の形態２におけるベルト把持具の第４変形例の断面図である。It is sectional drawing of the 4th modification of the belt gripping tool in Embodiment 2. FIG. 実施の形態２におけるベルト把持具の第４変形例の断面図である。It is sectional drawing of the 4th modification of the belt gripping tool in Embodiment 2. FIG. 実施の形態３におけるベルト把持具の断面図である。It is sectional drawing of the belt gripping tool in Embodiment 3. FIG. 実施の形態３におけるベルト把持具の第１変形例の断面図である。FIG. 5 is a cross-sectional view of a first modification of the belt gripper according to the third embodiment. 実施の形態４におけるベルト把持具の断面図である。It is sectional drawing of the belt gripping tool in Embodiment 4. FIG. 実施の形態４におけるベルト把持具の第１変形例の断面図である。FIG. 5 is a cross-sectional view of a first modification of the belt gripper according to the fourth embodiment.
　この発明を実施するための形態について添付の図面に従って説明する。なお、各図中、同一または相当する部分には同一の符号が付される。当該部分の重複説明は適宜に簡略化ないし省略する。 The embodiment for carrying out the present invention will be described with reference to the attached drawings. In each figure, the same or corresponding parts are designated by the same reference numerals. The duplicate description of the relevant part will be simplified or omitted as appropriate.
実施の形態１．
　図１は実施の形態１におけるベルト把持具が適用されるエレベータの構成図である。 Embodiment 1.
FIG. 1 is a configuration diagram of an elevator to which the belt gripper according to the first embodiment is applied.
　図１のエレベータにおいて、昇降路１は、建築物の各階を貫く。機械室２は、昇降路１の直上に設けられる。巻上機３は、機械室２に設けられる。そらせ車４は、機械室２に設けられる。 In the elevator of FIG. 1, the hoistway 1 penetrates each floor of the building. The machine room 2 is provided directly above the hoistway 1. The hoisting machine 3 is provided in the machine room 2. The deflecting wheel 4 is provided in the machine room 2.
　図示されない一対のかごガイドレールは、昇降路１の内部に設けられる。図示されない一対の釣合おもりガイドレールは、昇降路１の内部に設けられる。 A pair of car guide rails (not shown) are provided inside the hoistway 1. A pair of balanced weight guide rails (not shown) are provided inside the hoistway 1.
　巻上機３は、機械室２の内部に設けられる。巻上機３は、図示されないモータと駆動シーブ６と図示されないブレーキとを備える。
モータは、回転自在に設けられる。駆動シーブ６は、モータの回転軸に取り付けられる。ブレーキは、駆動シーブ６の回転を制動し得るように設けられる。 The hoisting machine 3 is provided inside the machine room 2. The hoisting machine 3 includes a motor (not shown), a drive sheave (6), and a brake (not shown).
The motor is rotatably provided. The drive sheave 6 is attached to the rotating shaft of the motor. The brake is provided so as to be able to brake the rotation of the drive sheave 6.
　そらせ車４は、機械室２の内部に設けられる。そらせ車４は、回転自在に設けられる。 The deflecting wheel 4 is provided inside the machine room 2. The deflecting wheel 4 is rotatably provided.
　複数本のベルト７は、駆動シーブ６とそらせ車４とに巻き掛けられる。なお、図１において、１本のベルト７のみが示される。 The plurality of belts 7 are wound around the drive sheave 6 and the deflecting wheel 4. In addition, in FIG. 1, only one belt 7 is shown.
　かご８と釣合おもり９とは、昇降路１の内部に設けられる。かご８と釣合おもり９とは、１：１ローピング方式によりベルト７で吊り下げられる。 The car 8 and the balance weight 9 are provided inside the hoistway 1. The basket 8 and the counterweight 9 are suspended by a belt 7 by a 1: 1 roping method.
　かご８は、昇降路１の内部において一対のかごガイドレールに鉛直方向に案内される。かご８は、かご枠１０とかご室１１とを備える。かご枠１０は、図１においては図示されない連結部材１３とベルト把持具１２と図１においては図示されないピン１４とを用いてベルト７の一側に接続される。かご室１１は、かご枠１０に支持される。 The car 8 is guided vertically by a pair of car guide rails inside the hoistway 1. The car 8 includes a car frame 10 and a car room 11. The car frame 10 is connected to one side of the belt 7 by using a connecting member 13 (not shown in FIG. 1), a belt gripper 12, and a pin 14 (not shown in FIG. 1). The car chamber 11 is supported by the car frame 10.
　釣合おもり９は、昇降路１の内部において一対の釣合おもりガイドレールに鉛直方向に案内される。釣合おもり９は、図１においては図示されない連結部材１３とベルト把持具１２と図１においては図示されないピン１４を用いてベルト７の他側に接続される。 The balance weight 9 is guided in the vertical direction by a pair of balance weight guide rails inside the hoistway 1. The balance weight 9 is connected to the other side of the belt 7 by using a connecting member 13 and a belt gripper 12 (not shown in FIG. 1) and a pin 14 (not shown in FIG. 1).
　制御装置５は、機械室２の内部に設けられる。制御装置５は、巻上機３を制御することでかご８の運行を制御する。例えば、制御装置５は、駆動シーブ６を回転させることでかご８と釣合おもり９とを昇降させる。 The control device 5 is provided inside the machine room 2. The control device 5 controls the operation of the car 8 by controlling the hoisting machine 3. For example, the control device 5 raises and lowers the car 8 and the counterweight 9 by rotating the drive sheave 6.
　図２は実施の形態１におけるベルト把持具が適用されるベルトの端部を示す斜視図である。図３は図２のＡ－Ａ線での断面図である。 FIG. 2 is a perspective view showing an end portion of the belt to which the belt gripper according to the first embodiment is applied. FIG. 3 is a cross-sectional view taken along the line AA of FIG.
　図２のＸ軸方向はベルト７の幅方向である。図２のＹ軸方向はベルト７の厚み方向である。図２のＺ軸方向はベルト７の長手方向である。以降においても同様の符号が用いられる。 The X-axis direction in FIG. 2 is the width direction of the belt 7. The Y-axis direction in FIG. 2 is the thickness direction of the belt 7. The Z-axis direction in FIG. 2 is the longitudinal direction of the belt 7. The same reference numerals are used thereafter.
　図２に示されるように、ベルト７は、矩形状の扁平ベルトである。ベルト７において、厚み方向の寸法は、幅方向の寸法よりも小さい。ベルト７には、図２においては図示されないかご８と釣合おもり９との重量による荷重がＺ軸方向に作用する。ベルト７は、図２においては示されない駆動シーブ６とそらせ車４とを通過する際にＸ軸まわりの方向に曲げられる。 As shown in FIG. 2, the belt 7 is a rectangular flat belt. In the belt 7, the dimension in the thickness direction is smaller than the dimension in the width direction. A load due to the weight of the cage 8 and the counterweight 9 (not shown in FIG. 2) acts on the belt 7 in the Z-axis direction. The belt 7 is bent in the direction around the X-axis when passing through the drive sheave 6 and the deflecting wheel 4, which are not shown in FIG.
　図３に示されるように、ベルト７は、荷重支持部材７１と被覆材７２とから構成される。 As shown in FIG. 3, the belt 7 is composed of a load supporting member 71 and a covering material 72.
　荷重支持部材７１は、ベルト７の長手方向の荷重を負担する。荷重支持部材７１の形状と個数とは、限定されない。被覆材７２は、荷重支持部材７１の全周を覆う。被覆材７２は、熱、湿度等の外部からの環境負荷と駆動シーブ６、そらせ車４等との接触による物理的負荷とから荷重支持部材７１を保護する。被覆材７２は、ベルト７に必要なトラクションを安定して提供する役割も担う。 The load support member 71 bears the load in the longitudinal direction of the belt 7. The shape and number of the load supporting members 71 are not limited. The covering material 72 covers the entire circumference of the load supporting member 71. The covering material 72 protects the load supporting member 71 from external environmental loads such as heat and humidity and physical loads due to contact with the drive sheave 6, the deflecting wheel 4, and the like. The covering material 72 also plays a role of stably providing the traction required for the belt 7.
　ベルト７は、ベルト下面７ａとベルト上面７ｄとベルト側面７ｂとベルト側面７ｃとを有する。図３での断面において、ベルト下面７ａとベルト上面７ｄとは、矩形の長辺を有する側の面である。図３での断面において、ベルト側面７ｂとベルト側面７ｃとは、矩形の短辺を有する側の面である。 The belt 7 has a belt lower surface 7a, a belt upper surface 7d, a belt side surface 7b, and a belt side surface 7c. In the cross section of FIG. 3, the lower surface of the belt 7a and the upper surface of the belt 7d are surfaces on the side having a long side of a rectangle. In the cross section shown in FIG. 3, the belt side surface 7b and the belt side surface 7c are surfaces having a rectangular short side.
　ベルト７は、上下に対称な形状である。このため、ベルト７においては、上下の区別はない。説明の便宜上、ベルト下面７ａは、－Ｙ軸側の面とされる。ベルト上面７ｄは、＋Ｙ側の面とされる。ベルト側面７ｂは、－Ｘ軸側の面とされる。ベルト側面７ｃは、＋Ｘ軸側の面とされる。 The belt 7 has a vertically symmetrical shape. Therefore, in the belt 7, there is no distinction between upper and lower. For convenience of explanation, the lower surface 7a of the belt is a surface on the −Y axis side. The upper surface 7d of the belt is the surface on the + Y side. The side surface 7b of the belt is a surface on the −X axis side. The side surface 7c of the belt is a surface on the + X axis side.
　図４は図２のＡ－Ａ線での断面における荷重支持部材の拡大図である。 FIG. 4 is an enlarged view of the load supporting member in the cross section taken along the line AA of FIG.
　図４に示されるように、荷重支持部材７１は、多数の高強度繊維７３と含侵樹脂７４とから構成される。 As shown in FIG. 4, the load supporting member 71 is composed of a large number of high-strength fibers 73 and an impregnated resin 74.
　多数の高強度繊維７３は、ベルト７の長手方向に沿って配置される。多数の高強度繊維７３は、軽量で高強度で連続した強化繊維である。含侵樹脂７４は、高強度繊維７３を互いに結合する。 A large number of high-strength fibers 73 are arranged along the longitudinal direction of the belt 7. The large number of high-strength fibers 73 are lightweight, high-strength, continuous reinforcing fibers. The impregnated resin 74 binds the high-strength fibers 73 to each other.
　図５は実施の形態１におけるベルト把持具の正面図である。図６は実施の形態１におけるベルト把持具の右側面図である。図７は図６のＢ－Ｂ線での断面図である。図８は図６のＣ－Ｃ線での断面図である。 FIG. 5 is a front view of the belt gripper according to the first embodiment. FIG. 6 is a right side view of the belt gripper according to the first embodiment. FIG. 7 is a cross-sectional view taken along the line BB of FIG. FIG. 8 is a cross-sectional view taken along the line CC of FIG.
　図５に示されるように、ベルト把持具１２は、ピン１４により連結部材１３と結合される。図５から図８に示されるように、ベルト把持具１２は、ハウジング２０と第１楔２５と第２楔２６とから構成される。 As shown in FIG. 5, the belt gripper 12 is connected to the connecting member 13 by the pin 14. As shown in FIGS. 5 to 8, the belt gripper 12 is composed of a housing 20, a first wedge 25, and a second wedge 26.
　図６と図７とに示されるように、ハウジング２０は、第１受け部材２１と第２受け部材２２と第１横部材２３と第２横部材２４とから構成される。 As shown in FIGS. 6 and 7, the housing 20 is composed of a first receiving member 21, a second receiving member 22, a first horizontal member 23, and a second horizontal member 24.
　第１受け部材２１と第２受け部材２２とは、互いに対向する。第１横部材２３と第２横部材２４とは、互いに対向する。第１受け部材２１と第２受け部材２２と第１横部材２３と第２横部材２４とは、ベルト７の長手方向に貫通する穴を形成する。 The first receiving member 21 and the second receiving member 22 face each other. The first lateral member 23 and the second lateral member 24 face each other. The first receiving member 21, the second receiving member 22, the first lateral member 23, and the second lateral member 24 form a hole penetrating in the longitudinal direction of the belt 7.
　第１横部材２３は、ピン穴２３ａを有する。ピン穴２３ａは、ベルト７の幅方向に貫通する。第２横部材２４は、ピン穴２４ａを有する。ピン穴２４ａは、ベルト７の幅方向に貫通する。連結部材１３は、ピン穴１３ａを有する。ピン穴１３ａは、ベルト７の幅方向に貫通する。 The first lateral member 23 has a pin hole 23a. The pin hole 23a penetrates in the width direction of the belt 7. The second lateral member 24 has a pin hole 24a. The pin hole 24a penetrates in the width direction of the belt 7. The connecting member 13 has a pin hole 13a. The pin hole 13a penetrates in the width direction of the belt 7.
　ピン１４は、第１横部材２３のピン穴２３ａ、連結部材１３のピン穴１３ａ、第２横部材２４のピン穴２４ａを貫通する。その結果、ベルト把持具１２は、連結部材１３と結合される。なお、図６は、ピン１４の両端は、ボルト形状となっている。例えば、ピン１４は、リーマボルトである。例えば、ピン１４は、ショルダーボルトである。 The pin 14 penetrates the pin hole 23a of the first horizontal member 23, the pin hole 13a of the connecting member 13, and the pin hole 24a of the second horizontal member 24. As a result, the belt gripper 12 is coupled to the connecting member 13. In FIG. 6, both ends of the pin 14 are bolt-shaped. For example, pin 14 is a reamer bolt. For example, the pin 14 is a shoulder bolt.
　図７に示されるように、第１楔２５と第２楔２６とは、ハウジング２０の貫通穴にベルト７が挿入された状態でハウジング２０の貫通穴に挿入される。第１楔２５は、第１押付け部材として、第１受け部材２１に支持される。第２楔２６は、第２押付け部材として、第２受け部材２２に支持される。第１楔２５と第２楔２６とは、ベルト７と接触する。第１楔２５と第２楔２６とは、ベルト７の厚み方向に圧縮力を与える。 As shown in FIG. 7, the first wedge 25 and the second wedge 26 are inserted into the through hole of the housing 20 with the belt 7 inserted into the through hole of the housing 20. The first wedge 25 is supported by the first receiving member 21 as the first pressing member. The second wedge 26 is supported by the second receiving member 22 as the second pressing member. The first wedge 25 and the second wedge 26 come into contact with the belt 7. The first wedge 25 and the second wedge 26 apply a compressive force in the thickness direction of the belt 7.
　図８に示されるように、第１楔２５は、第１圧縮面２５ａと第１側面２５ｂと第２側面２５ｃと第１受け面２５ｄとを有する。第１楔２５は、第１圧縮面２５ａと第１側面２５ｂと第２側面２５ｃとで凹状の溝を形成する。第１楔２５の溝の幅は、ベルト７の幅と同程度である。第１楔２５の溝の深さは、ベルト７の厚み以上である。 As shown in FIG. 8, the first wedge 25 has a first compression surface 25a, a first side surface 25b, a second side surface 25c, and a first receiving surface 25d. The first wedge 25 forms a concave groove on the first compression surface 25a, the first side surface 25b, and the second side surface 25c. The width of the groove of the first wedge 25 is about the same as the width of the belt 7. The depth of the groove of the first wedge 25 is equal to or greater than the thickness of the belt 7.
　第１圧縮面２５ａは、ベルト下面７ａと接触する面である。第１側面２５ｂは、ベルト側面７ｂに面した面である。第２側面２５ｃは、ベルト側面７ｃに面した面である。少なくともベルト７が厚み方向に圧縮された状態では、第１側面２５ｂと第２側面２５ｃとは、ベルト７の被覆材７２と接することで、ベルト７の幅中央方向の圧縮力を被覆材７２に与える。第１受け面２５ｄは、第１圧縮面２５ａの対向面である。 The first compression surface 25a is a surface that comes into contact with the lower surface 7a of the belt. The first side surface 25b is a surface facing the belt side surface 7b. The second side surface 25c is a surface facing the belt side surface 7c. At least in a state where the belt 7 is compressed in the thickness direction, the first side surface 25b and the second side surface 25c come into contact with the covering material 72 of the belt 7 to apply a compressive force in the width center direction of the belt 7 to the covering material 72. give away. The first receiving surface 25d is a facing surface of the first compression surface 25a.
　図７に示されるように、第１受け面２５ｄは、第１圧縮面２５ａとの距離がベルト７の張力方向（＋Ｚ軸方向）に向かって小さくなる方向に傾く。第１楔２５は、第１受け面２５ｄでハウジング２０の第１受け部材２１と接することで支持される。第１受け部材２１において、第１受け面２５ｄに接する面は、第１受け面２５ｄと平行である。 As shown in FIG. 7, the first receiving surface 25d is inclined in a direction in which the distance from the first compression surface 25a becomes smaller in the tension direction (+ Z axis direction) of the belt 7. The first wedge 25 is supported by being in contact with the first receiving member 21 of the housing 20 at the first receiving surface 25d. In the first receiving member 21, the surface in contact with the first receiving surface 25d is parallel to the first receiving surface 25d.
　図８に示されるように、第２楔２６は、凸状の突起をベルト７の厚み方向に備えた形状である。第２楔２６の突起は、第１楔２５の溝に挿入し得る。第２楔２６の突起は、ベルト７の幅方向において荷重支持部材７１よりも大きい幅を有する。 As shown in FIG. 8, the second wedge 26 has a shape provided with convex protrusions in the thickness direction of the belt 7. The protrusion of the second wedge 26 can be inserted into the groove of the first wedge 25. The protrusion of the second wedge 26 has a width larger than that of the load supporting member 71 in the width direction of the belt 7.
　第２楔２６は、第２圧縮面２６ａと第２受け面２６ｄを有する。第２圧縮面２６ａは、ベルト上面７ｄと接触する面である。第２圧縮面２６ａは、突起の先端に位置する。第２受け面２６ｄは、第２圧縮面２６ａの対向面である。 The second wedge 26 has a second compression surface 26a and a second receiving surface 26d. The second compression surface 26a is a surface that comes into contact with the upper surface 7d of the belt. The second compression surface 26a is located at the tip of the protrusion. The second receiving surface 26d is a facing surface of the second compression surface 26a.
　図７に示されるように、第２受け面２６ｄは、第２圧縮面２６ａとの距離がベルト７の張力方向（＋Ｚ軸方向）に向かって小さくなる方向に傾く。第２楔２６は、第２受け面２６ｄでハウジング２０の第２受け部材２２と接することで支持される。第２受け部材２２において、第２受け面２６ｄに接する面は、第２受け面２６ｄと平行である。 As shown in FIG. 7, the second receiving surface 26d is inclined in a direction in which the distance from the second compression surface 26a becomes smaller in the tension direction (+ Z axis direction) of the belt 7. The second wedge 26 is supported by being in contact with the second receiving member 22 of the housing 20 at the second receiving surface 26d. In the second receiving member 22, the surface in contact with the second receiving surface 26d is parallel to the second receiving surface 26d.
　ベルト７の長手方向において、ベルト７と第１圧縮面２５ａとの摩擦係数とベルト７と第２圧縮面２６ａとの摩擦係数とは、第１受け面２５ｄと第１受け部材２１との摩擦係数と第２受け面２６ｄと第２受け部材２２との摩擦係数とよりも大きい。 In the longitudinal direction of the belt 7, the friction coefficient between the belt 7 and the first compression surface 25a and the friction coefficient between the belt 7 and the second compression surface 26a are the friction coefficient between the first receiving surface 25d and the first receiving member 21. Is larger than the coefficient of friction between the second receiving surface 26d and the second receiving member 22.
　以上で説明した実施の形態１によれば、ベルト７は、第１楔２５の溝に挿入された状態で第１楔２５の第１圧縮面２５ａと第２楔２６の第２圧縮面２６ａとに挟まれることで厚み方向の圧縮力を受ける。ベルト７は、長手方向において第１楔２５との間の摩擦力と第２楔２６との間の摩擦力で把持される。 According to the first embodiment described above, the belt 7 has the first compression surface 25a of the first wedge 25 and the second compression surface 26a of the second wedge 26 in a state of being inserted into the groove of the first wedge 25. Receives compressive force in the thickness direction by being sandwiched between. The belt 7 is gripped by the frictional force between the first wedge 25 and the second wedge 26 in the longitudinal direction.
　ベルト７は、厚み方向の圧縮力によりポアソン比の影響で幅方向に広がろうとする。この際、ベルト７は、第１楔２５の第１側面２５ｂと第２側面２５ｃとに接触する。当該接触により、ベルト７は、第１楔２５の第１側面２５ｂと第２側面２５ｃとから幅方向の反力を受ける。すなわち、ベルト７には、当該接触によって、ベルト７の幅方向外側から幅方向中央への力が作用する。その結果、被覆材７２の広がりは、第１楔２５の第１側面２５ｂと第２側面２５ｃとに抑制される。このため、荷重支持部材７１に作用する幅方向の引張力を減少させることができる。その結果、荷重支持部材７１が長手方向に割れることを抑制しつつ、ベルト７を強固に把持することができる。ここで、荷重支持部材が長手方向に割れるとは、荷重支持部材の長手方向に亀裂が入り、局所的に幅方向に分かれることをいう。 Belt 7 tends to widen in the width direction due to the influence of Poisson's ratio due to the compressive force in the thickness direction. At this time, the belt 7 comes into contact with the first side surface 25b and the second side surface 25c of the first wedge 25. Due to the contact, the belt 7 receives a reaction force in the width direction from the first side surface 25b and the second side surface 25c of the first wedge 25. That is, a force acts on the belt 7 from the outside in the width direction to the center in the width direction due to the contact. As a result, the spread of the covering material 72 is suppressed by the first side surface 25b and the second side surface 25c of the first wedge 25. Therefore, the tensile force in the width direction acting on the load supporting member 71 can be reduced. As a result, the belt 7 can be firmly gripped while suppressing the load supporting member 71 from cracking in the longitudinal direction. Here, the fact that the load supporting member cracks in the longitudinal direction means that the load supporting member cracks in the longitudinal direction and is locally divided in the width direction.
　また、ベルト７の長手方向において、ベルト７と第１圧縮面２５ａとの摩擦係数とベルト７と第２圧縮面２６ａとの摩擦係数とは、第１楔２５と第１受け面２５ｄとの摩擦係数と第２楔２６と第２受け面２６ｄとの摩擦係数とよりも大きい。このため、ベルト７が張力を受けた際、ベルト７と第１楔２５と第２楔２６とは、第１楔２５と第２楔２６とが食い込む方向に一体となってハウジング２０の内部を動く。この際、ベルト７と第１楔２５との間とベルト７と第２楔２６との間で滑りが生じない。その結果、ベルト７の表面の被覆材７２が損傷することなく、ベルト７を把持することができる。さらに、楔機構でベルト７の厚み方向の圧縮力が増大する。このため、ベルト７に大きな張力が作用しても、ベルト７が抜けることを抑制できる。 Further, in the longitudinal direction of the belt 7, the friction coefficient between the belt 7 and the first compression surface 25a and the friction coefficient between the belt 7 and the second compression surface 26a are the friction between the first wedge 25 and the first receiving surface 25d. It is larger than the coefficient and the coefficient of friction between the second wedge 26 and the second receiving surface 26d. Therefore, when the belt 7 is tensioned, the belt 7, the first wedge 25, and the second wedge 26 are integrated in the direction in which the first wedge 25 and the second wedge 26 bite into the inside of the housing 20. It works. At this time, slip does not occur between the belt 7 and the first wedge 25 and between the belt 7 and the second wedge 26. As a result, the belt 7 can be gripped without damaging the covering material 72 on the surface of the belt 7. Further, the wedge mechanism increases the compressive force of the belt 7 in the thickness direction. Therefore, even if a large tension acts on the belt 7, it is possible to prevent the belt 7 from coming off.
　なお、ベルト７が厚み方向の圧縮力を受ける際、第１側面２５ｂと第２側面２５ｃとがベルト７に接触するのであれば、ベルト７が厚み方向の圧縮力を受ける前に、第１側面２５ｂと第２側面２５ｃとは、ベルト７と接触していなくてもよい。これに対し、圧縮力を受ける前のベルト７が第１楔２５の溝に挿入された段階でベルト７が第１側面２５ｂと第２側面２５ｃとに接触していれば、ベルト７が第１側面２５ｂと第２側面２５ｃとに接触していない場合よりも、ベルト７の幅方向外側から幅方向中央への力が大きく作用し、ベルト７が厚み方向の圧縮力を受けた際の被覆材７２のベルト幅方向の広がりが抑制される。このため、荷重支持部材７１が長手方向に割れることをより確実に抑制できる。 When the belt 7 receives the compressive force in the thickness direction, if the first side surface 25b and the second side surface 25c come into contact with the belt 7, the first side surface before the belt 7 receives the compressive force in the thickness direction. The 25b and the second side surface 25c do not have to be in contact with the belt 7. On the other hand, if the belt 7 is in contact with the first side surface 25b and the second side surface 25c at the stage when the belt 7 is inserted into the groove of the first wedge 25 before receiving the compressive force, the belt 7 is the first. A covering material when a force acts from the outside in the width direction to the center in the width direction of the belt 7 and the belt 7 receives a compressive force in the thickness direction as compared with the case where the side surface 25b and the second side surface 25c are not in contact with each other. The spread of 72 in the belt width direction is suppressed. Therefore, it is possible to more reliably prevent the load supporting member 71 from cracking in the longitudinal direction.
　また、ベルト７を第１楔２５の溝に挿入する段階で、ベルト７を第１楔２５よりも冷却したり第１楔２５をベルト７よりも加熱したりする熱処理を施せば、第１楔２５の溝の幅がベルト７の幅よりも小さくても、ベルト７を第１楔２５の溝に挿入しやすくできる。このような熱処理を施せば、ベルト７を第１楔２５の溝に挿入した段階でベルト７と第１側面２５ｂとの隙間とベルト７と第２側面２５ｃとの隙間とをなくすことができる。また、ベルト７を第１楔２５の溝に挿入した段階で、ベルト７の幅方向外側から幅方向中央に圧縮力が作用し、被覆材７２の広がりを抑制することで、荷重支持部材７１の長手方向に割れることをより確実に抑制できる。なお、ベルト把持具１２が冷却機能または加熱機能を有していてもよい。例えば、第１楔２５に冷却管またはヒーターを取り付けてもよい。 Further, at the stage of inserting the belt 7 into the groove of the first wedge 25, if the belt 7 is subjected to a heat treatment such as cooling the belt 7 more than the first wedge 25 or heating the first wedge 25 more than the belt 7, the first wedge Even if the width of the groove of 25 is smaller than the width of the belt 7, the belt 7 can be easily inserted into the groove of the first wedge 25. By performing such a heat treatment, the gap between the belt 7 and the first side surface 25b and the gap between the belt 7 and the second side surface 25c can be eliminated when the belt 7 is inserted into the groove of the first wedge 25. Further, when the belt 7 is inserted into the groove of the first wedge 25, a compressive force acts from the outside in the width direction to the center in the width direction of the belt 7 to suppress the spread of the covering material 72, whereby the load supporting member 71 It is possible to more reliably suppress cracking in the longitudinal direction. The belt gripper 12 may have a cooling function or a heating function. For example, a cooling pipe or a heater may be attached to the first wedge 25.
　また、第２楔２６の突起の高さは、第１圧縮面２５ａと第２圧縮面２６ａとでベルト７を挟み、ベルト７の厚み方向の圧縮力を与えて、ベルト７を把持できる範囲で設定すればよい。ベルト７を厚み方向に圧縮しても第１楔２５と第２楔２６とがベルト７の厚み方向について接触しないように、第２楔２６の突起の高さを設定すれば、第１楔２５と第２楔２６とからの圧縮力が全てベルト７に作用する。具体的には、第１楔２５の溝の深さからベルト７の厚みを差し引いてベルト７の圧縮時の変形量を加えた値以上の高さに第２楔２６の高さを設定すれば、第１楔２５と第２楔２６とからの圧縮力が全てベルト７に作用する。この場合、ベルト７がベルト把持具１２から抜けることをより確実に抑制できる。 Further, the height of the protrusion of the second wedge 26 is within a range in which the belt 7 is sandwiched between the first compression surface 25a and the second compression surface 26a and a compressive force in the thickness direction of the belt 7 is applied so that the belt 7 can be gripped. Just set it. If the height of the protrusion of the second wedge 26 is set so that the first wedge 25 and the second wedge 26 do not come into contact with each other in the thickness direction of the belt 7 even if the belt 7 is compressed in the thickness direction, the first wedge 25 All the compressive forces from the second wedge 26 and the second wedge 26 act on the belt 7. Specifically, if the height of the second wedge 26 is set to a height equal to or greater than the value obtained by subtracting the thickness of the belt 7 from the depth of the groove of the first wedge 25 and adding the amount of deformation of the belt 7 during compression. , All the compressive forces from the first wedge 25 and the second wedge 26 act on the belt 7. In this case, it is possible to more reliably prevent the belt 7 from coming off the belt gripper 12.
　なお、第１圧縮面２５ａと第１側面２５ｂと第２側面２５ｃと第２圧縮面２６ａとについて、表面形状と表面性状とは、限定されない。 The surface shape and surface texture of the first compression surface 25a, the first side surface 25b, the second side surface 25c, and the second compression surface 26a are not limited.
　また、図８において、第１楔２５の溝の幅がベルト７の幅以下であり、第２楔２６の突起の幅が第１楔２５の溝の幅と等しく、ベルト７の７ａ～７ｄの４面全てを隙間なく第１楔２５の溝と第２楔２６の突起で覆えば、ベルト７に生じる応力は、静水圧状態に近い状態となる。すると、ベルト７には、当該接触によって、ベルト７の幅方向外側から幅方向中央の向きを含め、すべての向きの圧力が均等に近づく。このため、荷重支持部材７１が長手方向に割れることをより確実に抑制できる。さらに、ベルト７に厚み方向の過剰な圧縮力が作用しても、ベルト７を厚み方向に大きく変形させずに把持することができる。 Further, in FIG. 8, the width of the groove of the first wedge 25 is equal to or less than the width of the belt 7, the width of the protrusion of the second wedge 26 is equal to the width of the groove of the first wedge 25, and the widths of the belts 7 7a to 7d. If all four surfaces are covered with the grooves of the first wedge 25 and the protrusions of the second wedge 26 without gaps, the stress generated in the belt 7 becomes close to the hydrostatic pressure state. Then, due to the contact, the pressure in all directions including the direction from the outside in the width direction to the center in the width direction of the belt 7 approaches the belt 7 evenly. Therefore, it is possible to more reliably prevent the load supporting member 71 from cracking in the longitudinal direction. Further, even if an excessive compressive force in the thickness direction acts on the belt 7, the belt 7 can be gripped without being significantly deformed in the thickness direction.
　ベルト７の長手方向の割れを抑制するには、第１楔２５の溝とベルト７の幅方向の隙間δがゼロ以下であることが望ましい。隙間δをゼロ以下にすることが困難な場合は、少なくとも式（１）が、可能であれば式（２）が成立することが望ましい。 In order to suppress cracking in the longitudinal direction of the belt 7, it is desirable that the gap δ in the width direction between the groove of the first wedge 25 and the belt 7 is zero or less. When it is difficult to make the gap δ zero or less, it is desirable that at least the equation (1) is established, and if possible, the equation (2) is established.
Figure JPOXMLDOC01-appb-M000001
Figure JPOXMLDOC01-appb-M000001
Figure JPOXMLDOC01-appb-M000002
Figure JPOXMLDOC01-appb-M000002
　ここで、ｔ１、ν１、Ｅ１は、それぞれ荷重支持部材７１の厚さ、ポアソン比、X方向およびY方向の弾性率である。ｔ２、ν２は、それぞれ被覆材７２のトータル厚さ、ポアソン比である。Ｗは、荷重支持部材７１の幅方向の長さ、σCは、荷重支持部材７１に長手方向の割れが生じる始めるＸ方向応力である。 Here, t 1 , ν 1 , and E 1 are the thickness of the load supporting member 71, the Poisson's ratio, and the elastic modulus in the X and Y directions, respectively. t 2 and ν 2 are the total thickness and Poisson's ratio of the covering material 72, respectively. W is the length of the load support member 71 in the width direction, and σ C is the stress in the X direction at which the load support member 71 begins to crack in the longitudinal direction.
　例えば、荷重支持部材７１の厚さｔ１と周囲の被覆材７２の厚さｔ２／２が同程度、σC／E１が約１/１００、荷重支持部材７１と被覆材７２のポアソン比νが約０．３のベルト７について、第１楔２５の溝の幅がベルト７の幅寸法の中央値で、寸法公差が荷重支持部材７１の幅寸法の約±０．５％以下である図８のベルト把持具１２を適用すれば、荷重支持部材７１が長手方向に割れることなく、ベルト７が張力で破断するまでベルト７を把持できることが実験で確認されている。 For example, the Poisson's ratio of the load thickness t 1 and the thickness t 2/2 is comparable around the dressing 72 of the support member 71, sigma C / E 1 is about 1/100, the load bearing member 71 and the cover member 72 For the belt 7 having a ν of about 0.3, the width of the groove of the first wedge 25 is the median value of the width dimension of the belt 7, and the dimensional tolerance is about ± 0.5% or less of the width dimension of the load supporting member 71. It has been experimentally confirmed that by applying the belt gripping tool 12 of FIG. 8, the load supporting member 71 can be gripped until the belt 7 is broken by tension without cracking in the longitudinal direction.
　また、ハウジング２０と第１楔２５との接触面とハウジング２０と第２楔２６との接触面の形状と表面性状とは、限定されない。例えば、ハウジング２０と第１楔２５との間の摩擦係数とハウジング２０と第２楔２６との間の摩擦係数とを低減するために、これらの接触面に潤滑剤を塗布したり低摩擦材を貼り付けたりしてもよい。特に、ベルト７の厚み方向の圧縮力の反力を第１楔２５と第２楔２６とから受ける第１受け部材２１と第２受け部材２２との面に潤滑剤を塗布すれば、第１楔２５と第２楔２６とハウジング２０との焼付きを抑制することができる。 Further, the shape and surface texture of the contact surface between the housing 20 and the first wedge 25 and the contact surface between the housing 20 and the second wedge 26 are not limited. For example, in order to reduce the coefficient of friction between the housing 20 and the first wedge 25 and the coefficient of friction between the housing 20 and the second wedge 26, a lubricant is applied to these contact surfaces or a low friction material is applied. May be pasted. In particular, if a lubricant is applied to the surfaces of the first receiving member 21 and the second receiving member 22 that receive the reaction force of the compressive force in the thickness direction of the belt 7 from the first wedge 25 and the second wedge 26, the first Seizure of the wedge 25, the second wedge 26, and the housing 20 can be suppressed.
　また、ハウジング２０のベルト７の幅方向の内寸法は、ハウジング２０内で第１楔２５と第２楔２６とを挿入及び支持できれば限定されない。ハウジング２０の内寸法が第１楔２５と第２楔２６との幅寸法と同じか僅かに大きい寸法であれば、ハウジング２０内で第１楔２５と第２楔２６との位置ずれや傾きを低減することができる。この場合、ベルト７に作用する偏荷重とねじれ負荷とが低減されることで、長手方向に均等な荷重が作用した状態でベルト７を把持することができる。 Further, the internal dimensions of the belt 7 of the housing 20 in the width direction are not limited as long as the first wedge 25 and the second wedge 26 can be inserted and supported in the housing 20. If the inner dimension of the housing 20 is the same as or slightly larger than the width dimension of the first wedge 25 and the second wedge 26, the misalignment or inclination of the first wedge 25 and the second wedge 26 in the housing 20 Can be reduced. In this case, since the eccentric load and the twisting load acting on the belt 7 are reduced, the belt 7 can be gripped in a state where a uniform load is applied in the longitudinal direction.
　また、ハウジング２０が１つの部品でもよい。ハウジング２０が複数の部品で構成される場合、ハウジング２０を分解することでベルト７と第１楔２５と第２楔２６とを容易に着脱することができる。 Also, the housing 20 may be a single component. When the housing 20 is composed of a plurality of parts, the belt 7, the first wedge 25, and the second wedge 26 can be easily attached to and detached by disassembling the housing 20.
　また、ハウジング２０と連結部材１３との結合方法は、限定されない。例えば、図６に示されるように、ハウジング２０と連結部材１３とをピンでベルト７の幅方向に結合すれば、Ｘ軸まわりの回転が自由となる。このため、ベルト把持具１２にベルト７を取付ける際などに生じうるベルト７に作用するＸ軸まわりの負荷を低減することができる。 Further, the method of connecting the housing 20 and the connecting member 13 is not limited. For example, as shown in FIG. 6, if the housing 20 and the connecting member 13 are connected by a pin in the width direction of the belt 7, the rotation around the X axis becomes free. Therefore, it is possible to reduce the load around the X-axis that acts on the belt 7 that may occur when the belt 7 is attached to the belt gripper 12.
　また、第１楔２５と第２楔２６とハウジング２０との材質は、ベルト７の幅方向の広がりを抑制でき、ベルト７を把持できれば限定されない。例えば、炭素鋼、高張力鋼、圧延鋼、ステンレス鋼、構造用合金鋼などの鉄系材料及びそれらを母材としためっき鋼、あるいは、アルミニウム、マグネシウム、チタン、黄銅、銅などの材料及び合金材料を用いて、第１楔２５と第２楔２６とハウジング２０と形成してもよい。 Further, the materials of the first wedge 25, the second wedge 26, and the housing 20 are not limited as long as they can suppress the spread of the belt 7 in the width direction and can grip the belt 7. For example, iron-based materials such as carbon steel, high-tensile steel, rolled steel, stainless steel, and structural alloy steel and plated steel using them as base materials, or materials and alloys such as aluminum, magnesium, titanium, brass, and copper. The material may be used to form the first wedge 25, the second wedge 26, and the housing 20.
　また、ベルト７へ厚み方向の圧縮力の与える方法は、限定されない。ベルト７に厚み方向の圧縮力を作用させると、クリープ、応力緩和等で厚み方向の圧縮力が経時的に低下し得る。ここで、クリープは、ベルト７の厚み方向の圧縮力でベルト７の厚みが経時的に減少する現象である。応力緩和は、ベルト７の厚み方向の弾性率が経時的に低下する現象である。ベルト７へ厚み方向の圧縮力の与える方法として楔機構を用いれば、ベルト７の厚みや弾性率の変化に応じて第１楔２５と第２楔２６とがハウジング２０内を移動する。このため、ベルト７に対し、一定の把持力を維持できる。 Further, the method of applying the compressive force in the thickness direction to the belt 7 is not limited. When a compressive force in the thickness direction is applied to the belt 7, the compressive force in the thickness direction may decrease over time due to creep, stress relaxation, or the like. Here, creep is a phenomenon in which the thickness of the belt 7 decreases with time due to the compressive force in the thickness direction of the belt 7. Stress relaxation is a phenomenon in which the elastic modulus of the belt 7 in the thickness direction decreases with time. If a wedge mechanism is used as a method of applying a compressive force in the thickness direction to the belt 7, the first wedge 25 and the second wedge 26 move in the housing 20 according to changes in the thickness and elastic modulus of the belt 7. Therefore, a constant gripping force can be maintained with respect to the belt 7.
　次に、図９を用いて、ベルト把持具１２の第１変形例を説明する。
　図９は実施の形態１におけるベルト把持具の第１変形例の断面図である。 Next, a first modification of the belt gripper 12 will be described with reference to FIG.
FIG. 9 is a cross-sectional view of a first modification of the belt gripper according to the first embodiment.
　図９は図６のＣ－Ｃ断面図である。図９において、第１圧縮面２５ａと第２圧縮面２６ａとは、ベルト７の長手方向と平行な凹凸を有する。 FIG. 9 is a cross-sectional view taken along the line CC of FIG. In FIG. 9, the first compression surface 25a and the second compression surface 26a have irregularities parallel to the longitudinal direction of the belt 7.
　ベルト７が厚み方向に圧縮力を受ける前の状態において、ベルト上面７ｄとベルト下面７ａとは平坦である。ベルト７は、矩形の断面を有する。ベルト７が厚み方向に圧縮力を受けた後の状態において、被覆材７２は、第１圧縮面２５ａと第２圧縮面２６ａとに沿って変形する。 Before the belt 7 receives a compressive force in the thickness direction, the upper surface 7d of the belt and the lower surface 7a of the belt are flat. The belt 7 has a rectangular cross section. After the belt 7 receives a compressive force in the thickness direction, the covering material 72 is deformed along the first compression surface 25a and the second compression surface 26a.
　ベルト把持具１２の第１変形例においては、第１側面２５ｂと第２側面２５ｃとだけでなく、第１圧縮面２５ａおよび第２圧縮面２６ａも、被覆材７２が幅方向に広がることを抑制する。このため、第１圧縮面２５ａおよび第２圧縮面２６ａが平坦である場合よりも、荷重支持部材７１が長手方向に割れることをより確実に抑制できる。 In the first modification of the belt gripper 12, not only the first side surface 25b and the second side surface 25c but also the first compression surface 25a and the second compression surface 26a suppress the covering material 72 from spreading in the width direction. To do. Therefore, it is possible to more reliably suppress the load supporting member 71 from cracking in the longitudinal direction than when the first compression surface 25a and the second compression surface 26a are flat.
　次に、図１０を用いて、ベルト把持具１２の第２変形例を説明する。
　図１０は実施の形態１におけるベルト把持具の第２変形例の断面図である。 Next, a second modification of the belt gripper 12 will be described with reference to FIG.
FIG. 10 is a cross-sectional view of a second modification of the belt gripper according to the first embodiment.
　図１０は図６のＣ－Ｃ断面図である。図１０において、第１圧縮面２５ａと第２圧縮面２６ａとの距離は、ベルト７の幅方向中央からベルト７の幅方向端に向かって小さくなる。 FIG. 10 is a cross-sectional view taken along the line CC of FIG. In FIG. 10, the distance between the first compression surface 25a and the second compression surface 26a decreases from the center in the width direction of the belt 7 toward the end in the width direction of the belt 7.
　ベルト把持具１２の第２変形例においては、第１圧縮面２５ａと第２圧縮面２６ａとの法線方向は、ベルト７の厚み方向と平行でなく、ベルト７の幅方向中央に向かう成分を有する。このため、ベルト７を厚み方向に圧縮すると、第１側面２５ｂと第２側面２５ｃとだけでなく、第１圧縮面２５ａと第２圧縮面２６ａとからもベルト７の幅方向中央に向かう力が被覆材７２に作用する。その結果、第１圧縮面２５ａおよび第２圧縮面２６ａが平坦である場合よりも、荷重支持部材７１が長手方向に割れることをより確実に抑制できる。 In the second modification of the belt gripper 12, the normal direction of the first compression surface 25a and the second compression surface 26a is not parallel to the thickness direction of the belt 7, but the component toward the center in the width direction of the belt 7. Have. Therefore, when the belt 7 is compressed in the thickness direction, not only the first side surface 25b and the second side surface 25c but also the first compression surface 25a and the second compression surface 26a exert a force toward the center of the belt 7 in the width direction. It acts on the covering material 72. As a result, it is possible to more reliably suppress the load supporting member 71 from cracking in the longitudinal direction than when the first compression surface 25a and the second compression surface 26a are flat.
　なお、ベルト把持具１２の第１変形例または第２変形例において、第１圧縮面２５ａと第２圧縮面２６ａのどちらか一方の面を平坦としてもよい。 In the first modification or the second modification of the belt gripper 12, either the first compression surface 25a or the second compression surface 26a may be flattened.
　また、ベルト把持具１２の第１変形例または第２変形例において、ベルト７と接触する第１楔２５及び第２楔２６の表面にベルト７の幅方向と平行な凹凸を設けてもよい。この場合、ベルト７の長手方向におけるベルト７との摩擦係数が増大することで、ベルト７をベルト把持具１２から抜けにくくすることができる。さらに、第１楔２５と第２楔２６とにおいて、ベルト７との表面を母材と異なる高摩擦な材質で構成することで、ベルト７との摩擦係数を大きくしてもよい。例えば、第１楔２５と第２楔２６との表面は、ベルト７よりも硬質なゴム等の樹脂でもよい。 Further, in the first modification or the second modification of the belt gripper 12, the surfaces of the first wedge 25 and the second wedge 26 that come into contact with the belt 7 may be provided with irregularities parallel to the width direction of the belt 7. In this case, the coefficient of friction of the belt 7 with the belt 7 in the longitudinal direction increases, so that the belt 7 can be made difficult to come off from the belt gripper 12. Further, in the first wedge 25 and the second wedge 26, the friction coefficient with the belt 7 may be increased by forming the surface of the belt 7 with a material having a high friction different from that of the base material. For example, the surfaces of the first wedge 25 and the second wedge 26 may be made of a resin such as rubber that is harder than the belt 7.
　また、ベルト把持具１２の第１変形例または第２変形例において、ベルト７の被覆材７２の形状は、限定されない。例えば、被覆材７２を平坦としてもよい。例えば、図９、図１０において、被覆材７２を第１楔２５と第２楔２６とに沿った形状としてもよい。例えば、第１圧縮面２５ａと第２圧縮面２６ａとに大きな凹凸を設け、被覆材７２の形状を第１圧縮面２５ａと第２圧縮面２６ａとの凹凸が噛合うようにすれば、被覆材７２のベルト７の幅方向の広がりをより確実に抑制することができる。その結果、荷重支持部材７１が長手方向に割れることをより確実に抑制できる。 Further, in the first modification or the second modification of the belt gripper 12, the shape of the covering material 72 of the belt 7 is not limited. For example, the covering material 72 may be flat. For example, in FIGS. 9 and 10, the covering material 72 may have a shape along the first wedge 25 and the second wedge 26. For example, if the first compression surface 25a and the second compression surface 26a are provided with large irregularities so that the irregularities of the first compression surface 25a and the second compression surface 26a mesh with each other, the covering material 72 is formed. The spread of the belt 7 of the 72 in the width direction can be suppressed more reliably. As a result, the load supporting member 71 can be more reliably suppressed from cracking in the longitudinal direction.
　次に、図１１を用いて、ベルト７の第１変形例を説明する。
　図１１は実施の形態１におけるベルト把持具が適用されるベルトの第１変形例の断面図である。 Next, a first modification of the belt 7 will be described with reference to FIG.
FIG. 11 is a cross-sectional view of a first modification of the belt to which the belt gripper according to the first embodiment is applied.
　図１１は図２のＡ－Ａ線での断面図である。図１１において、複数の荷重支持部材７１は、矩形状に形成される。距離Ｗは、ベルト７の幅方向に位置する両端の荷重支持部材７１の幅方向の端間距離である。 FIG. 11 is a cross-sectional view taken along the line AA of FIG. In FIG. 11, the plurality of load supporting members 71 are formed in a rectangular shape. The distance W is the distance between the ends of the load supporting members 71 at both ends located in the width direction of the belt 7 in the width direction.
　次に、図１２を用いて、ベルト７の第２変形例を説明する。
　図１２は実施の形態１におけるベルト把持具が適用されるベルトの第２変形例の断面図である。 Next, a second modification of the belt 7 will be described with reference to FIG.
FIG. 12 is a cross-sectional view of a second modification of the belt to which the belt gripper according to the first embodiment is applied.
　図１２は図２のＡ－Ａ線での断面図である。図１２において、複数の荷重支持部材７１は、円形状に形成される。距離Ｗは、ベルト７の幅方向に位置する両端の荷重支持部材７１の幅方向の端間距離である。 FIG. 12 is a cross-sectional view taken along the line AA of FIG. In FIG. 12, the plurality of load supporting members 71 are formed in a circular shape. The distance W is the distance between the ends of the load supporting members 71 at both ends located in the width direction of the belt 7 in the width direction.
　なお、図１１と図１２とには図示されないが、第１圧縮面２５ａと第２圧縮面２６ａとは、ベルト７の幅方向について荷重支持部材７１よりも大きい幅を有することが望ましい。例えば第１圧縮面２５ａと第２圧縮面２６ａとは、距離Ｗ以上の幅を有することが望ましい。特に、第１圧縮面２５ａと第２圧縮面２６ａとが全ての荷重支持部材７１を内包していれば、荷重支持部材７１に作用する厚み方向の圧縮力が第１圧縮面２５ａと第２圧縮面２６ａとの境界で不連続とならない。このため、荷重支持部材７１に作用する厚み方向の圧縮力を均等にすることができる。その結果、荷重支持部材７１が長手方向に割れることをより確実に抑制できる。 Although not shown in FIGS. 11 and 12, it is desirable that the first compression surface 25a and the second compression surface 26a have a width larger than that of the load support member 71 in the width direction of the belt 7. For example, it is desirable that the first compression surface 25a and the second compression surface 26a have a width of a distance W or more. In particular, if the first compression surface 25a and the second compression surface 26a include all the load support members 71, the compressive force acting on the load support member 71 in the thickness direction is the first compression surface 25a and the second compression surface. There is no discontinuity at the boundary with the surface 26a. Therefore, the compressive force acting on the load supporting member 71 in the thickness direction can be made uniform. As a result, the load supporting member 71 can be more reliably suppressed from cracking in the longitudinal direction.
　次に、図１３を用いて、ベルト把持具１２の第３変形例を説明する。
　図１３は実施の形態１におけるベルト把持具の第３変形例の断面図である。 Next, a third modification of the belt gripper 12 will be described with reference to FIG.
FIG. 13 is a cross-sectional view of a third modification of the belt gripper according to the first embodiment.
　図１３において、第１圧縮面２５ａと第２圧縮面２６ａとは、ベルト７の幅方向に荷重支持部材７１よりも大きい幅を有する。第１圧縮面２５ａと第２圧縮面２６ａとは、全ての荷重支持部材７１を内包しているわけではない。具体的には、第１圧縮面２５ａと第２圧縮面２６ａとは、小さな溝を有する。この場合でも、荷重支持部材７１が長手方向に割れることを抑制できる。 In FIG. 13, the first compression surface 25a and the second compression surface 26a have a width larger than that of the load support member 71 in the width direction of the belt 7. The first compression surface 25a and the second compression surface 26a do not include all the load supporting members 71. Specifically, the first compression surface 25a and the second compression surface 26a have small grooves. Even in this case, it is possible to prevent the load supporting member 71 from cracking in the longitudinal direction.
　次に、図１４を用いて、ベルト把持具１２の第４変形例を説明する。
　図１４は実施の形態１におけるベルト把持具の第４変形例の断面図である。 Next, a fourth modification of the belt gripper 12 will be described with reference to FIG.
FIG. 14 is a cross-sectional view of a fourth modification of the belt gripper according to the first embodiment.
　図１４において、第１圧縮面２５ａと第２圧縮面２６ａとは、ベルト７の幅方向に荷重支持部材７１よりも大きい幅を有する。第１圧縮面２５ａと第２圧縮面２６ａとは、小さな溝を有するが、第１圧縮面２５ａと第２圧縮面２６ａとは、全ての荷重支持部材７１を内包している。この場合においても、図８のような第１圧縮面２５ａと第２圧縮面２６ａとに小さな溝を有さない圧縮面と同様の効果を得ることができる。 In FIG. 14, the first compression surface 25a and the second compression surface 26a have a width larger than that of the load support member 71 in the width direction of the belt 7. The first compression surface 25a and the second compression surface 26a have small grooves, but the first compression surface 25a and the second compression surface 26a include all the load supporting members 71. Also in this case, the same effect as that of the compression surface having no small groove on the first compression surface 25a and the second compression surface 26a as shown in FIG. 8 can be obtained.
　次に、図１５を用いて、ベルト把持具１２の第５変形例を説明する。
　図１５は実施の形態１におけるベルト把持具の第５変形例の断面図である。 Next, a fifth modification of the belt gripper 12 will be described with reference to FIG.
FIG. 15 is a cross-sectional view of a fifth modification of the belt gripper according to the first embodiment.
　図１５は、図６におけるＢ－Ｂ線での断面図である。図１５のベルト把持具１２は、第１楔２５の代わりに凹板３０を備える。凹板３０は、楔形状でない。 FIG. 15 is a cross-sectional view taken along the line BB in FIG. The belt gripper 12 of FIG. 15 includes an intaglio plate 30 instead of the first wedge 25. The intaglio plate 30 is not wedge-shaped.
　凹板３０は、第１圧縮面３０ａと第１側面と第２側面と第１受け面３０ｄとを有する。第１圧縮面３０ａと第１側面と第２側面と第１受け面３０ｄとは、それぞれ図７における第１楔２５の第１圧縮面２５ａ、第１側面２５ｂ、第２側面２５ｃ、第１受け面２５ｄに相当する。 The intaglio plate 30 has a first compression surface 30a, a first side surface, a second side surface, and a first receiving surface 30d. The first compression surface 30a, the first side surface, the second side surface, and the first receiving surface 30d are the first compression surface 25a, the first side surface 25b, the second side surface 25c, and the first receiving surface of the first wedge 25 in FIG. 7, respectively. Corresponds to surface 25d.
　図１５において、凹板３０の第１受け面３０ｄは、第１圧縮面３０ａと平行である。第１受け部材２１において、第１受け面３０ｄと接する面は、第１受け面３０ｄと平行である。 In FIG. 15, the first receiving surface 30d of the concave plate 30 is parallel to the first compression surface 30a. In the first receiving member 21, the surface in contact with the first receiving surface 30d is parallel to the first receiving surface 30d.
　ベルト把持具１２の第５変形例においても、被覆材７２の幅方向の広がりが抑制される。このため、ベルト７が厚み方向の圧縮力を受けても、荷重支持部材７１が長手方向に割れることを抑制できる。 Also in the fifth modification of the belt gripper 12, the spread of the covering material 72 in the width direction is suppressed. Therefore, even if the belt 7 receives a compressive force in the thickness direction, it is possible to prevent the load supporting member 71 from cracking in the longitudinal direction.
　また、ベルト７と凹板３０と第２楔２６とが一体となって、ハウジング２０内を移動する。このため、ベルト７と第１楔２５との間とベルト７と凹板３０との間とで滑りが生じない。その結果、ベルト７の表面の被覆材７２が損傷することなく、ベルト７を把持することができる。 Further, the belt 7, the intaglio plate 30, and the second wedge 26 are integrated and move in the housing 20. Therefore, slip does not occur between the belt 7 and the first wedge 25 and between the belt 7 and the intaglio plate 30. As a result, the belt 7 can be gripped without damaging the covering material 72 on the surface of the belt 7.
　また、凹板３０は、傾斜を有してない。このため、図７の第１楔２５よりも凹板３０の加工コストを低減することができる。 Also, the intaglio plate 30 does not have an inclination. Therefore, the processing cost of the intaglio plate 30 can be reduced as compared with the first wedge 25 of FIG.
　なお、楔形状の第１楔２５と、第２楔２６の代わりに第２圧縮面２６ａと第２受け面２６ｄが平行な部材とを組み合わせてもよい。 A wedge-shaped first wedge 25 and a member in which the second compression surface 26a and the second receiving surface 26d are parallel to each other may be combined instead of the second wedge 26.
　また、図８から図１０、図１３から図１５において、荷重支持部材７１の位置において、第１圧縮面２５ａと第２圧縮面２６ａとのＺＸ平面への投影図が等しければ、荷重支持部材７１にベルト７の厚み方向Ｙ軸方向のせん断が作用しない。この場合、荷重支持部材７１がせん断力により長手方向に割れることを抑制できる。 Further, in FIGS. 8 to 10 and 13 to 15, if the projection views of the first compression surface 25a and the second compression surface 26a on the ZX plane are the same at the positions of the load support member 71, the load support member 71 No shearing in the thickness direction and Y-axis direction of the belt 7 acts on the belt 7. In this case, it is possible to prevent the load supporting member 71 from cracking in the longitudinal direction due to the shearing force.
　次に、図１６と図１７とを用いて、ベルト把持具１２の第６変形例を説明する。
　図１６は実施の形態１におけるベルト把持具の第６変形例の正面図である。図１７は図１６のＤ－Ｄ線での断面図である。 Next, a sixth modification of the belt gripper 12 will be described with reference to FIGS. 16 and 17.
FIG. 16 is a front view of a sixth modification of the belt gripper according to the first embodiment. FIG. 17 is a cross-sectional view taken along the line DD of FIG.
　ベルト把持具１２は、凹板３０と凸板３１と締結ボルト３２とから構成される。ベルト把持具１２は、ハウジングは備えない。 The belt gripper 12 is composed of an intaglio plate 30, a convex plate 31, and a fastening bolt 32. The belt gripper 12 does not include a housing.
　凹板３０は、第１圧縮面３０ａと第１側面と第２側面とボルト穴と第１受け面３０ｄとピン穴３０ｆとを有する。 The intaglio plate 30 has a first compression surface 30a, a first side surface, a second side surface, a bolt hole, a first receiving surface 30d, and a pin hole 30f.
　第１圧縮面３０ａと第１側面と第２側面とは、それぞれ図７における第１楔２５の第１圧縮面２５ａと第１側面２５ｂと第２側面２５ｃとに相当する。第１受け面３０ｄは、第１圧縮面３０ａの対向面である。第１受け面３０ｄは、第１圧縮面３０ａと平行である。ボルト穴は、凹板３０をベルト７の厚み方向に貫通する。ピン穴３０ｆは、ベルト７の厚み方向に貫通したピン１４を通す。凹板３０は、凹板３０の第１受け面３０ｄが第１圧縮面３０ａと平行である点とボルト穴とピン穴３０ｆを有する点とで図６の第１楔２５と異なる。 The first compression surface 30a, the first side surface, and the second side surface correspond to the first compression surface 25a, the first side surface 25b, and the second side surface 25c of the first wedge 25 in FIG. 7, respectively. The first receiving surface 30d is a facing surface of the first compression surface 30a. The first receiving surface 30d is parallel to the first compression surface 30a. The bolt holes penetrate the intaglio plate 30 in the thickness direction of the belt 7. The pin hole 30f passes through the pin 14 penetrating in the thickness direction of the belt 7. The intaglio plate 30 is different from the first wedge 25 in FIG. 6 in that the first receiving surface 30d of the intaglio plate 30 is parallel to the first compression surface 30a and has a bolt hole and a pin hole 30f.
　凸板３１は、第２圧縮面３１ａと第２受け面３１ｂとめねじ穴とピン穴とを有する。 The convex plate 31 has a second compression surface 31a, a second receiving surface 31b, a female screw hole, and a pin hole.
　第２圧縮面３１ａは、図７における第２楔２６の第２圧縮面２６ａに相当する。第２受け面３１ｂは、第２圧縮面３１ａの対向面である。第２受け面３１ｂは、第２圧縮面３１ａと平行である。めねじ穴は、ベルト７の厚み方向に貫通する。ピン穴は、ベルト厚み方向に貫通する。凸板３１は、第２受け面３１ｂが第２圧縮面３１ａと平行な点とめねじ穴及びピン穴を有する点とで図６の第２楔２６と異なる。 The second compression surface 31a corresponds to the second compression surface 26a of the second wedge 26 in FIG. 7. The second receiving surface 31b is a facing surface of the second compression surface 31a. The second receiving surface 31b is parallel to the second compression surface 31a. The female screw hole penetrates in the thickness direction of the belt 7. The pin hole penetrates in the belt thickness direction. The convex plate 31 is different from the second wedge 26 in FIG. 6 in that the second receiving surface 31b has a point parallel to the second compression surface 31a and a female screw hole and a pin hole.
　連結部材１３は、ベルト７の厚み方向のピン穴１３ａを有する。 The connecting member 13 has a pin hole 13a in the thickness direction of the belt 7.
　ピン１４がピン穴１３ａと凹板３０のピン穴と凸板３１のピン穴とに挿入されることで、凹板３０と凸板３１とは、連結部材１３と結合する。ベルト７が凹板３０の溝に挿入されている際に、締結ボルトが凹板３０のボルト穴と凸板３１のめねじ穴に通された状態で締め付けられることで、凹板３０と凸板３１は、ベルト７に厚み方向の圧縮力を与える。 By inserting the pin 14 into the pin hole 13a, the pin hole of the concave plate 30, and the pin hole of the convex plate 31, the concave plate 30 and the convex plate 31 are connected to the connecting member 13. When the belt 7 is inserted into the groove of the intaglio plate 30, the fastening bolt is tightened while being passed through the bolt hole of the intaglio plate 30 and the female screw hole of the convex plate 31, so that the concave plate 30 and the convex plate are tightened. 31 applies a compressive force in the thickness direction to the belt 7.
　ベルト把持具１２の第６変形例においては、ベルト把持具１２は、ハウジング２０を必要としない。このため、ベルト把持具１２の軽くすることができるだけでなく、ベルト把持具１２の加工コストを低減することができる。 In the sixth modification of the belt gripper 12, the belt gripper 12 does not require the housing 20. Therefore, not only can the belt gripping tool 12 be made lighter, but also the processing cost of the belt gripping tool 12 can be reduced.
実施の形態２．
　図１８は実施の形態２におけるベルト把持具の断面図である。なお、実施の形態１の部分と同一又は相当部分には同一符号が付される。当該部分の説明は省略される。 Embodiment 2.
FIG. 18 is a cross-sectional view of the belt gripper according to the second embodiment. The same or corresponding parts as those of the first embodiment are designated by the same reference numerals. The explanation of the relevant part is omitted.
　図１８は、図６のＣ－Ｃ線での断面図である。図１８において、ハウジング２０は図示されない。 FIG. 18 is a cross-sectional view taken along the line CC of FIG. In FIG. 18, the housing 20 is not shown.
　実施の形態２の第１楔２５において、第１側面２５ｂと第２側面２５ｃとは別部品から構成される。 In the first wedge 25 of the second embodiment, the first side surface 25b and the second side surface 25c are composed of separate parts.
　実施の形態２のベルト把持具１２は、ハウジング２０と第１楔２５と第２楔２６と第１側壁２７と第２側壁２８とから構成される。 The belt gripper 12 of the second embodiment is composed of a housing 20, a first wedge 25, a second wedge 26, a first side wall 27, and a second side wall 28.
　第１側壁２７は、第１側壁面２７ａとボルト穴２７ｂとを有する。 The first side wall 27 has a first side wall surface 27a and a bolt hole 27b.
　第１側壁面２７ａは、ベルト７のベルト側面７ｂ（図１８においては図示されず）と面する。ボルト穴２７ｂは、ベルト７の厚み方向に第１側壁２７を貫通する。 The first side wall surface 27a faces the belt side surface 7b (not shown in FIG. 18) of the belt 7. The bolt hole 27b penetrates the first side wall 27 in the thickness direction of the belt 7.
　第２側壁２８は、第２側壁面２８ａとボルト穴２８ｂとを有する。 The second side wall 28 has a second side wall surface 28a and a bolt hole 28b.
　第２側壁面２８ａは、ベルト７のベルト側面７ｃと面する。ボルト穴２８ｂは、ベルト７の厚み方向に第２側壁２８を貫通する。 The second side wall surface 28a faces the belt side surface 7c of the belt 7. The bolt hole 28b penetrates the second side wall 28 in the thickness direction of the belt 7.
　第１側壁面２７ａと第２側壁面２８ａとは、実施の形態１の第１側面２５ｂと第２側面２５ｃとにそれぞれ相当する。凹状の溝は、第１圧縮面２５ａと第１側壁面２７ａと第２側壁面２８ａとで形成される。第１側壁面２７ａと第２側壁面２８ａとは、少なくともベルト７が厚み方向に圧縮力を受けた状態では、ベルト７の被覆材７２と接する。第１側壁２７と第２側壁２８とは、ボルト穴２７ｂとボルト穴２８ｂとを用いて、それぞれ固定ボルト１５で第１楔２５に固定される。固定ボルト１５は、第２楔２６と接触しない。 The first side wall surface 27a and the second side wall surface 28a correspond to the first side surface 25b and the second side surface 25c of the first embodiment, respectively. The concave groove is formed by the first compression surface 25a, the first side wall surface 27a, and the second side wall surface 28a. The first side wall surface 27a and the second side wall surface 28a are in contact with the covering material 72 of the belt 7 at least in a state where the belt 7 receives a compressive force in the thickness direction. The first side wall 27 and the second side wall 28 are fixed to the first wedge 25 by fixing bolts 15 using bolt holes 27b and bolt holes 28b, respectively. The fixing bolt 15 does not come into contact with the second wedge 26.
　以上で説明した実施の形態２によれば、ベルト７を厚み方向に圧縮した際、ベルト７の幅方向外側から幅方向中央部への力が作用し、ベルト７の幅方向の広がりを抑制する面として、第１側壁面２７ａ及び第２側壁面２８ａとが別部品から構成される。このため、固定ボルト１５とボルト穴２７ｂとのクリアランスと固定ボルト１５とボルト穴２８ｂとのクリアランスとにより、凹状の溝の幅である第１側壁面２７ａと第２側壁面２８ａの距離を微調整することができる。この場合、ベルト７の幅方向の寸法がばらついても、ベルト７が厚み方向に圧縮される前の状態で、第１側壁２７と第２側壁２８との固定位置を調整することで、ベルト７を第１側壁２７と第２側壁２８とを接触させることができる。第１側壁面２７ａ及び第２側壁面２８ａが被覆材と接触することによって、ベルト７の幅方向外側から幅方向中央部への力がベルト７に作用する結果、荷重支持部材７１が長手方向に割れることを抑制できる。 According to the second embodiment described above, when the belt 7 is compressed in the thickness direction, a force acts from the outside in the width direction to the center portion in the width direction of the belt 7 to suppress the spread of the belt 7 in the width direction. As a surface, the first side wall surface 27a and the second side wall surface 28a are composed of separate parts. Therefore, the distance between the first side wall surface 27a and the second side wall surface 28a, which is the width of the concave groove, is finely adjusted by the clearance between the fixing bolt 15 and the bolt hole 27b and the clearance between the fixing bolt 15 and the bolt hole 28b. can do. In this case, even if the dimensions of the belt 7 in the width direction vary, the belt 7 can be adjusted by adjusting the fixing positions of the first side wall 27 and the second side wall 28 in the state before the belt 7 is compressed in the thickness direction. The first side wall 27 and the second side wall 28 can be brought into contact with each other. When the first side wall surface 27a and the second side wall surface 28a come into contact with the covering material, a force from the outside in the width direction to the center portion in the width direction of the belt 7 acts on the belt 7, and as a result, the load supporting member 71 moves in the longitudinal direction. It can suppress cracking.
　また、第１側壁２７と第２側壁２８との固定位置を調整することで、ベルト７を厚み方向に圧縮する前の状態でベルト７にベルト幅方向（ベルト７の幅方向外側から幅方向中央部へ向かう方向）の圧縮力を与えることができる。その結果、被覆材７２の広がりをより確実に抑制できる。 Further, by adjusting the fixed positions of the first side wall 27 and the second side wall 28, the belt 7 is in the state before the belt 7 is compressed in the thickness direction in the belt width direction (from the outside in the width direction to the center in the width direction of the belt 7). It is possible to apply a compressive force (in the direction toward the part). As a result, the spread of the covering material 72 can be suppressed more reliably.
　なお、ボルト穴２７ｂとボルト穴２８ｂとをベルト７の幅方向の長穴としてもよい。この場合、ベルト７の幅寸法を大きく変更しても、同じベルト把持具１２で対応することができる。 The bolt hole 27b and the bolt hole 28b may be elongated holes in the width direction of the belt 7. In this case, even if the width dimension of the belt 7 is significantly changed, the same belt gripper 12 can be used.
　また、凹状の溝を形成する部品を別部品とすることで、１部品あたりの形状が単純となる。このため、各部品の加工コストを低減することができる。 Also, by making the part that forms the concave groove a separate part, the shape of each part becomes simple. Therefore, the processing cost of each part can be reduced.
　なお、第１側壁２７と第２側壁２８との材質は、限定されない。 The materials of the first side wall 27 and the second side wall 28 are not limited.
　また、溝を形成する第１側壁面２７ａと第２側壁面２８ａのとのうち、どちらか一方の側壁面のみが別部品でもよい。 Further, only one of the first side wall surface 27a and the second side wall surface 28a forming the groove may be a separate part.
　また、ベルト７に厚み方向の圧縮力を与えて把持する際に、第１側壁２７と第２側壁２８とがベルト７の幅の広がる方向に動かなければ、第１側壁２７と第２側壁２８との固定方法は限定されない。例えば、固定ボルト１５の代わりにピンを用いてもよい。 Further, when the belt 7 is gripped by applying a compressive force in the thickness direction, if the first side wall 27 and the second side wall 28 do not move in the direction in which the width of the belt 7 widens, the first side wall 27 and the second side wall 28 The method of fixing with is not limited. For example, a pin may be used instead of the fixing bolt 15.
　次に、図１９を用いて、ベルト把持具１２の第１変形例を説明する。
　図１９は実施の形態２におけるベルト把持具の第１変形例の断面図である。 Next, a first modification of the belt gripper 12 will be described with reference to FIG.
FIG. 19 is a cross-sectional view of a first modification of the belt gripper according to the second embodiment.
　図１９は図６のＣ－Ｃ線での断面図である。図１９において、ハウジング２０は図示されない。図１９に示されるように、第１楔２５は、第１側壁支持部２５ｅと第２側壁支持部２５ｆとを有する。 FIG. 19 is a cross-sectional view taken along the line CC of FIG. In FIG. 19, the housing 20 is not shown. As shown in FIG. 19, the first wedge 25 has a first side wall support portion 25e and a second side wall support portion 25f.
　第１側壁支持部２５ｅは、第１側壁面２７ａの対向面である第１側壁受け面２７ｃと接触することで、第１側壁２７が－Ｘ方向に移動することを抑制する。第２側壁支持部２５ｆは、第２側壁面２８ａの対向面である第２側壁受け面２８ｃと接触することで、第２側壁２８が＋Ｘ方向に移動することを抑制する。 The first side wall support portion 25e prevents the first side wall 27 from moving in the −X direction by coming into contact with the first side wall receiving surface 27c which is the facing surface of the first side wall surface 27a. The second side wall support portion 25f prevents the second side wall 28 from moving in the + X direction by coming into contact with the second side wall receiving surface 28c, which is the facing surface of the second side wall surface 28a.
　第１側壁２７と第２側壁２８とは、ベルト７からのＸ軸方向の荷重により生じる摩擦力で保持される。 The first side wall 27 and the second side wall 28 are held by the frictional force generated by the load in the X-axis direction from the belt 7.
　ベルト把持具１２の第１変形例において、第１側壁２７と第２側壁２８とにおけるベルト７の幅方向の寸法を変更することで、ベルト７を挿入する溝の幅を調整することができる。また、第１側壁２７と第２側壁２８とをボルト等で固定する作業を省くことができる。 In the first modification of the belt gripper 12, the width of the groove into which the belt 7 is inserted can be adjusted by changing the dimensions of the first side wall 27 and the second side wall 28 in the width direction of the belt 7. Further, the work of fixing the first side wall 27 and the second side wall 28 with bolts or the like can be omitted.
　次に、図２０を用いて、ベルト把持具１２の第２変形例を説明する。
　図２０は実施の形態２におけるベルト把持具の第２変形例の断面図である。 Next, a second modification of the belt gripper 12 will be described with reference to FIG.
FIG. 20 is a cross-sectional view of a second modification of the belt gripper according to the second embodiment.
　図２０は図６のＣ－Ｃ線での断面図である。図２０において、ハウジング２０は図示されない。図２０に示されるように、第１楔２５は、第１側壁支持部２５ｅと第２側壁支持部２５ｆとを有する。第１側壁支持部２５ｅは、第１側壁２７と接触しない。第２側壁支持部２５ｆは、第２側壁２８と接触しない。 FIG. 20 is a cross-sectional view taken along the line CC of FIG. In FIG. 20, the housing 20 is not shown. As shown in FIG. 20, the first wedge 25 has a first side wall support portion 25e and a second side wall support portion 25f. The first side wall support portion 25e does not come into contact with the first side wall 27. The second side wall support portion 25f does not come into contact with the second side wall 28.
　第１側壁支持部２５ｅは、めねじ穴２５ｇを有する。めねじ穴２５ｇは、ベルト７の幅方向に貫通する。固定ボルト１６は、めねじ穴２５ｇに通される。固定ボルト１６の先端は、第１側壁受け面２７ｃと接触する。 The first side wall support portion 25e has a female screw hole 25 g. The female screw hole 25 g penetrates in the width direction of the belt 7. The fixing bolt 16 is passed through the female screw hole 25 g. The tip of the fixing bolt 16 comes into contact with the first side wall receiving surface 27c.
　第２側壁支持部２５ｆは、めねじ穴２５ｇを有する。めねじ穴２５ｇは、ベルト７の幅方向に貫通する。固定ボルト１６は、めねじ穴２５ｇに通される。固定ボルト１６の先端は、第２側壁受け面２８ｃと接触する。 The second side wall support portion 25f has a female screw hole 25 g. The female screw hole 25 g penetrates in the width direction of the belt 7. The fixing bolt 16 is passed through the female screw hole 25 g. The tip of the fixing bolt 16 comes into contact with the second side wall receiving surface 28c.
　第１側壁２７と第２側壁２８とは、第１楔２５に固定されずにベルト７からのＸ軸方向の荷重により生じる摩擦力で保持される。ベルト７が厚み方向に圧縮された際、第１側壁２７と第２側壁２８と作用するベルト７の幅方向の力は、固定ボルト１５を介して第１側壁支持部２５ｅと第２側壁支持部２５ｆとで受ける。 The first side wall 27 and the second side wall 28 are not fixed to the first wedge 25 but are held by the frictional force generated by the load in the X-axis direction from the belt 7. When the belt 7 is compressed in the thickness direction, the force in the width direction of the belt 7 acting on the first side wall 27 and the second side wall 28 is applied to the first side wall support portion 25e and the second side wall support portion via the fixing bolt 15. Receive at 25f.
　ベルト把持具１２の第２変形例において、ベルト７を挿入する溝の幅は、固定ボルト１６で容易に調整することができる。また、ベルト７を溝に挿入した後、固定ボルト１６を回すことで、被覆材７２にベルト幅方向（ベルト７の幅方向外側から幅方向中央部へ向かう方向）の圧縮力を与えることができる。このため、荷重支持部材７１が長手方向に割れることをより確実に抑制できる。 In the second modification of the belt gripper 12, the width of the groove into which the belt 7 is inserted can be easily adjusted with the fixing bolt 16. Further, by inserting the belt 7 into the groove and then turning the fixing bolt 16, a compressive force in the belt width direction (direction from the outside in the width direction of the belt 7 toward the center in the width direction) can be applied to the covering material 72. .. Therefore, it is possible to more reliably prevent the load supporting member 71 from cracking in the longitudinal direction.
　次に、図２１と図２２とを用いて、ベルト把持具１２の第３変形例を説明する。
　図２１と図２２とは実施の形態２におけるベルト把持具の第３変形例の断面図である。 Next, a third modification of the belt gripper 12 will be described with reference to FIGS. 21 and 22.
21 and 22 are cross-sectional views of a third modification of the belt gripper according to the second embodiment.
　図２１は図６のＣ－Ｃ線での断面図である。図２２は図２１のＥ－Ｅ線での断面図である。図２１と図２２とにおいて、ハウジング２０は図示されない。図２１と図２２とに示されるように、第１楔２５において、第１側壁受け面２７ｃは、ベルト７の張力方向（＋Ｚ軸方向）に向かって第１側壁面２７ａとの距離が小さくなる方向に傾く。第１側壁支持部２５ｅにおいて、第１側壁２７の第１側壁受け面２７ｃに面する面は、第１側壁受け面２７ｃと平行である。第２楔２６において、第２側壁受け面２８ｃは、ベルト７の張力方向（＋Ｚ軸方向）に向かって第２側壁面２８ａとの距離が小さくなる方向に傾く。第２側壁支持部２５ｆにおいて、第２側壁２８の第２側壁受け面２８ｃに面する面は、第２側壁受け面２８ｃと平行である。 FIG. 21 is a cross-sectional view taken along the line CC of FIG. FIG. 22 is a cross-sectional view taken along the line EE of FIG. In FIGS. 21 and 22, the housing 20 is not shown. As shown in FIGS. 21 and 22, in the first wedge 25, the distance between the first side wall receiving surface 27c and the first side wall surface 27a decreases in the tension direction (+ Z axis direction) of the belt 7. Tilt in the direction. In the first side wall support portion 25e, the surface of the first side wall 27 facing the first side wall receiving surface 27c is parallel to the first side wall receiving surface 27c. In the second wedge 26, the second side wall receiving surface 28c is inclined in the direction in which the distance from the second side wall surface 28a becomes smaller in the tension direction (+ Z axis direction) of the belt 7. In the second side wall support portion 25f, the surface of the second side wall 28 facing the second side wall receiving surface 28c is parallel to the second side wall receiving surface 28c.
　ベルト把持具１２の第３変形例において、第１側壁２７と第２側壁２８との位置をＺ軸方向に移動させることで、第１側壁面２７ａと第２側壁面２８ａとの距離を調整することができる。このため、ベルト７の幅方向のばらつき、ベルト７の寸法変更等に容易に対応できる。 In the third modification of the belt gripper 12, the distance between the first side wall surface 27a and the second side wall surface 28a is adjusted by moving the positions of the first side wall 27 and the second side wall 28 in the Z-axis direction. be able to. Therefore, it is possible to easily cope with variations in the width direction of the belt 7, changes in the dimensions of the belt 7, and the like.
　次に、図２３と図２４とを用いて、ベルト把持具１２の第４変形例を説明する。
　図２３と図２４とは実施の形態２におけるベルト把持具の第４変形例の断面図である。 Next, a fourth modification of the belt gripper 12 will be described with reference to FIGS. 23 and 24.
23 and 24 are cross-sectional views of a fourth modification of the belt gripper according to the second embodiment.
　図２３は、図６のＣ－Ｃ線での断面図である。図２４は、図２３のＦ－Ｆ線での断面図である。 FIG. 23 is a cross-sectional view taken along the line CC of FIG. FIG. 24 is a cross-sectional view taken along the line FF of FIG. 23.
　図２３と図２４とにおいて、第１側壁受け面２７ｃと第２側壁受け面２８ｃとは、第１楔２５ではなく、ハウジング２０の第１横部材２３と第２横部材２４とに接する。第１横部材２３において、第１側壁受け面２７ｃと接触する箇所は、第１側壁受け面２７ｃと平行である。第１側壁面２７ａとベルト７の摩擦係数とは、第１側壁受け面２７ｃとハウジング２０との摩擦係数よりも大きい。第２横部材２４において、第２側壁受け面２８ｃと接触する箇所は、第２側壁受け面２８ｃと平行である。第１側壁２７と第２側壁２８とは、第１楔２５と第２楔２６とからベルト７の厚み方向の力を受けない。 In FIGS. 23 and 24, the first side wall receiving surface 27c and the second side wall receiving surface 28c are in contact with the first lateral member 23 and the second lateral member 24 of the housing 20 instead of the first wedge 25. In the first lateral member 23, the portion of the first lateral member 23 that comes into contact with the first side wall receiving surface 27c is parallel to the first side wall receiving surface 27c. The coefficient of friction between the first side wall surface 27a and the belt 7 is larger than the coefficient of friction between the first side wall receiving surface 27c and the housing 20. In the second lateral member 24, the portion of the second lateral member 24 that comes into contact with the second side wall receiving surface 28c is parallel to the second side wall receiving surface 28c. The first side wall 27 and the second side wall 28 do not receive a force in the thickness direction of the belt 7 from the first wedge 25 and the second wedge 26.
　ベルト把持具１２の第４変形例において、ベルト７が長手方向の荷重を受けると、ベルト７と第１側壁２７と第２側壁２８とは、一体となってハウジング２０内を移動する。ベルト７に作用する張力が増大するほど、第１側壁２７と第２側壁２８とからベルト７に作用するベルト７の幅中央方向の力は増大する。このため、荷重支持部材７１が長手方向に割れることをより確実に抑制できる。 In the fourth modification of the belt gripper 12, when the belt 7 receives a load in the longitudinal direction, the belt 7, the first side wall 27, and the second side wall 28 move integrally in the housing 20. As the tension acting on the belt 7 increases, the force acting on the belt 7 from the first side wall 27 and the second side wall 28 in the width center direction increases. Therefore, it is possible to more reliably prevent the load supporting member 71 from cracking in the longitudinal direction.
　なお、第１側壁受け面２７ｃの傾きが限定されない。ただし、第１側壁受け面２７ｃの傾きを第１楔２５の第１受け面２５ｄの傾き以上の傾きにすれば、第１側壁２７がベルト７を幅方向に過剰に圧縮することを抑制できる。 The inclination of the first side wall receiving surface 27c is not limited. However, if the inclination of the first side wall receiving surface 27c is set to be equal to or greater than the inclination of the first receiving surface 25d of the first wedge 25, it is possible to prevent the first side wall 27 from excessively compressing the belt 7 in the width direction.
　また、第２側壁受け面２８ｃの傾きは限定されない。ただし、第２側壁受け面２８ｃの傾きを第２楔２６の第２受け面２６ｄの傾き以上の傾きにすれば、第２側壁２８がベルト７を幅方向の過剰に圧縮することを抑制できる。 Further, the inclination of the second side wall receiving surface 28c is not limited. However, if the inclination of the second side wall receiving surface 28c is set to be equal to or greater than the inclination of the second receiving surface 26d of the second wedge 26, it is possible to prevent the second side wall 28 from excessively compressing the belt 7 in the width direction.
実施の形態３．
　図２５は実施の形態３におけるベルト把持具の断面図である。なお、実施の形態１の部分と同一又は相当部分には同一符号が付される。当該部分の説明は省略される。 Embodiment 3.
FIG. 25 is a cross-sectional view of the belt gripper according to the third embodiment. The same or corresponding parts as those of the first embodiment are designated by the same reference numerals. The explanation of the relevant part is omitted.
　図２５は、図６のＣ－Ｃ線での断面図である。図２５において、ハウジング２０は図示されない。 FIG. 25 is a cross-sectional view taken along the line CC of FIG. In FIG. 25, the housing 20 is not shown.
　図２５に示されるように、第１側壁２７と第２側壁２８とは、矩形断面を有する。第１側壁２７と第２側壁２８との厚みは、ベルト７と同程度である。第１側壁２７と第２側壁２８とは、ベルト７とともにベルト７の厚み方向の圧縮力を第１楔２５と第２楔２６とから受ける。第１側壁２７と第２側壁２８とは、第１楔２５と第２楔２６とに挟まれることで固定される。第１側壁２７と第２側壁２８とのベルト７のＹ軸方向の弾性率は、ベルト７の厚み方向の弾性率以下である。 As shown in FIG. 25, the first side wall 27 and the second side wall 28 have a rectangular cross section. The thickness of the first side wall 27 and the second side wall 28 is about the same as that of the belt 7. The first side wall 27 and the second side wall 28 receive a compressive force in the thickness direction of the belt 7 together with the belt 7 from the first wedge 25 and the second wedge 26. The first side wall 27 and the second side wall 28 are fixed by being sandwiched between the first wedge 25 and the second wedge 26. The elastic modulus of the belt 7 between the first side wall 27 and the second side wall 28 in the Y-axis direction is equal to or less than the elastic modulus in the thickness direction of the belt 7.
　以上で説明した実施の形態３によれば、ベルト７は、厚み方向に圧縮された際に第１側壁面２７ａと第２側壁面２８ａとから幅中央方向（ベルト７の幅方向外側から幅方向中央部へ向かう方向）の反力を受ける。このため、荷重支持部材７１が長手方向に割れることを抑制できる。 According to the third embodiment described above, when the belt 7 is compressed in the thickness direction, the belt 7 is in the width center direction from the first side wall surface 27a and the second side wall surface 28a (from the outside in the width direction of the belt 7 to the width direction). Receives the reaction force (in the direction toward the center). Therefore, it is possible to prevent the load supporting member 71 from cracking in the longitudinal direction.
　また、ベルト７を厚み方向に圧縮する前の状態において、ベルト７と第１側壁２７との間とベルト７と第２側壁２８との間に僅かな隙間を有していても、ベルト７の厚みの圧縮力で第１側壁２７と第２側壁２８とがポアソン比の影響によりベルト７が幅方向に広がる。このため、ベルト７は、圧縮される過程において第１側壁２７と第２側壁２８と早期に接触する。その結果、被覆材７２において、ベルト７の幅方向外側から幅方向中央部への力が作用し、ベルト７の幅方向の広がりを抑制することができる。 Further, even if there is a slight gap between the belt 7 and the first side wall 27 and between the belt 7 and the second side wall 28 in the state before the belt 7 is compressed in the thickness direction, the belt 7 Due to the compressive force of the thickness, the belt 7 expands in the width direction between the first side wall 27 and the second side wall 28 due to the influence of the Poisson's ratio. Therefore, the belt 7 comes into early contact with the first side wall 27 and the second side wall 28 in the process of being compressed. As a result, in the covering material 72, a force acts from the outside in the width direction to the center portion in the width direction of the belt 7, and the spread of the belt 7 in the width direction can be suppressed.
　また、第１側壁２７と第２側壁２８とは、ベルト７に厚み方向の圧縮力を与える前に第１楔２５と第２楔２６とにより固定されていない。このため、第１側壁面２７ａと第２側壁面２８ａとの距離を容易に調整できる。 Further, the first side wall 27 and the second side wall 28 are not fixed by the first wedge 25 and the second wedge 26 before applying the compressive force in the thickness direction to the belt 7. Therefore, the distance between the first side wall surface 27a and the second side wall surface 28a can be easily adjusted.
　また、第１楔２５と第２楔２６とは、溝および突起を有さない単純な形状である。このため、第１楔２５と第２楔２６との加工コストを低減することができる。 Further, the first wedge 25 and the second wedge 26 have simple shapes without grooves and protrusions. Therefore, the processing cost of the first wedge 25 and the second wedge 26 can be reduced.
　なお、第１側壁２７と第２側壁２８とは、ベルト７から幅方向の力を受ける。このため、第１側壁２７と第１楔２５との接触面と第２側壁２８と第２楔２６とのとにおいて、ベルト７の幅方向の摩擦係数が大きいことが望ましい。例えば、図９に示されるように、当該接触面に凹凸を設け、摩擦係数を大きくすればよい。例えば、第１側壁２７と第１楔２５との接触面に接着剤を塗布して、第１側壁２７と第１楔２５とを結合してもよい。例えば、第２側壁２８と第２楔２６との接触面に接着剤を塗布して、第２側壁２８と第２楔２６とを結合してもよい。 The first side wall 27 and the second side wall 28 receive a force in the width direction from the belt 7. Therefore, it is desirable that the friction coefficient in the width direction of the belt 7 is large at the contact surface between the first side wall 27 and the first wedge 25 and between the second side wall 28 and the second wedge 26. For example, as shown in FIG. 9, the contact surface may be provided with irregularities to increase the coefficient of friction. For example, an adhesive may be applied to the contact surface between the first side wall 27 and the first wedge 25 to join the first side wall 27 and the first wedge 25. For example, an adhesive may be applied to the contact surface between the second side wall 28 and the second wedge 26 to join the second side wall 28 and the second wedge 26.
　また、ベルト７を把持でき、第１側壁２７と第２側壁２８とがベルト７の厚み方向の圧縮力で第１楔２５と第２楔２６とに固定できれば、第１側壁２７と第２側壁２８との厚みは限定されない。第１側壁２７と第２側壁２８との厚みを変更することで、ベルト７に作用する幅方向の圧縮力を調整することができる。例えば、第１側壁２７と第２側壁２８との厚みをベルト７の厚みよりも大きくすれば、ベルト７に作用する幅方向の圧縮力を増大させることができる。 Further, if the belt 7 can be gripped and the first side wall 27 and the second side wall 28 can be fixed to the first wedge 25 and the second wedge 26 by the compressive force in the thickness direction of the belt 7, the first side wall 27 and the second side wall 27 can be fixed. The thickness with 28 is not limited. By changing the thickness of the first side wall 27 and the second side wall 28, the compressive force in the width direction acting on the belt 7 can be adjusted. For example, if the thickness of the first side wall 27 and the second side wall 28 is made larger than the thickness of the belt 7, the compressive force in the width direction acting on the belt 7 can be increased.
　また、第１側壁２７と第２側壁２８とにおいて、ベルト７の厚み方向の弾性率は、限定されない。第１側壁２７と第２側壁２８との弾性率を変更することで、ベルト７に作用する幅方向の圧縮力の大きさを調整することができる。例えば、第１側壁２７と第２側壁２８との弾性率を大きくすれば、ベルト７に作用する幅方向の圧縮力を増大させることができる。 Further, the elastic modulus in the thickness direction of the belt 7 is not limited in the first side wall 27 and the second side wall 28. By changing the elastic modulus of the first side wall 27 and the second side wall 28, the magnitude of the compressive force in the width direction acting on the belt 7 can be adjusted. For example, if the elastic modulus of the first side wall 27 and the second side wall 28 is increased, the compressive force in the width direction acting on the belt 7 can be increased.
　第１側壁２７と第２側壁２８とにおいて、厚み方向の弾性率がベルト７の厚み方向の弾性率以上である場合、第１側壁２７と第２側壁２８とが厚み方向の荷重に対するストッパとなることで、ベルト７を強固に把持することが困難となる。このため、第１側壁２７と第２側壁２８とにおいて、厚み方向の弾性率は、ベルト７のＹ軸方向の弾性率よりも小さいことが望ましい。 When the elastic modulus in the thickness direction of the first side wall 27 and the second side wall 28 is equal to or higher than the elastic modulus in the thickness direction of the belt 7, the first side wall 27 and the second side wall 28 serve as stoppers against the load in the thickness direction. This makes it difficult to firmly grip the belt 7. Therefore, it is desirable that the elastic modulus in the thickness direction of the first side wall 27 and the second side wall 28 is smaller than the elastic modulus in the Y-axis direction of the belt 7.
　第１側壁２７と第２側壁２８とにおいて、厚み方向の弾性率がベルト７の厚み方向の弾性率がベルト７の厚み方向の弾性率よりも大幅に小さい場合、被覆材７２において、ベルト幅方向の広がりを抑制できずに、荷重支持部材７１が長手方向に割れることを抑制できないこともある。 When the elastic modulus in the thickness direction of the first side wall 27 and the second side wall 28 is significantly smaller than the elastic modulus in the thickness direction of the belt 7 in the thickness direction, the covering material 72 has a belt width direction. It may not be possible to suppress the spread of the load supporting member 71 and prevent the load supporting member 71 from cracking in the longitudinal direction.
　ベルト７と同寸法の厚みを有する第１側壁２７と第２側壁２８とについて、第１側壁２７と第２側壁２８との弾性率をベルト７の厚み方向の弾性率の０．１倍から１倍の範囲で設定すればよい。この場合、荷重支持部材７１が長手方向に割れることを抑制できる点は実験で確認されている。 For the first side wall 27 and the second side wall 28 having the same thickness as the belt 7, the elastic modulus of the first side wall 27 and the second side wall 28 is 0.1 times to 1 the elastic modulus in the thickness direction of the belt 7. It may be set in the double range. In this case, it has been experimentally confirmed that the load supporting member 71 can be prevented from cracking in the longitudinal direction.
　第１側壁２７と第２側壁２８との材質は、限定されない。例えば、炭素鋼、高張力鋼、圧延鋼、ステンレス鋼、構造用合金鋼などの鉄系材料及びそれらを母材としためっき鋼、あるいは、アルミニウム、マグネシウム、チタン、黄銅、銅などの材料及び合金材料を用いて、第１側壁２７と第２側壁２８とを形成してもよい。例えば、ポリエチレン、ポリプロピレンなどの熱可塑性樹脂、スチレン系、ウレタン系、ポリエステル系、ポリアミド系などの熱可塑性エラストマー、クロロプレンゴム、アクリルゴムなどの熱硬化性エラストマー（ゴム）などの樹脂材料で第１側壁２７と第２側壁２８とを形成してもよい。例えば、繊維と樹脂の複合材料で第１側壁２７と第２側壁２８とを形成してもよい。 The materials of the first side wall 27 and the second side wall 28 are not limited. For example, iron-based materials such as carbon steel, high-tensile steel, rolled steel, stainless steel, and structural alloy steel and plated steel using them as base materials, or materials and alloys such as aluminum, magnesium, titanium, brass, and copper. The material may be used to form the first side wall 27 and the second side wall 28. For example, the first side wall is made of a thermoplastic resin such as polyethylene or polypropylene, a thermoplastic elastomer such as styrene-based, urethane-based, polyester-based, or polyamide-based, or a resin material such as a thermosetting elastomer (rubber) such as chloroprene rubber or acrylic rubber. 27 and the second side wall 28 may be formed. For example, the first side wall 27 and the second side wall 28 may be formed of a composite material of fiber and resin.
　次に、図２６を用いて、ベルト把持具１２の第１変形例を説明する。
　図２６は実施の形態３におけるベルト把持具の第１変形例の断面図である。 Next, a first modification of the belt gripper 12 will be described with reference to FIG. 26.
FIG. 26 is a cross-sectional view of a first modification of the belt gripper according to the third embodiment.
　図２６は、図６のＣ－Ｃ断面図である。図２６において、ハウジング２０は図示されない。 FIG. 26 is a cross-sectional view taken along the line CC of FIG. In FIG. 26, the housing 20 is not shown.
　第１側壁２７は、第１側壁面２７ａと第１側壁下面２７ｄと第１側壁上面２７ｅとを有する。 The first side wall 27 has a first side wall surface 27a, a first side wall lower surface 27d, and a first side wall upper surface 27e.
　第１側壁面２７ａは、ベルト７のベルト側面７ｂと接する面である。第１側壁下面２７ｄは、第１楔２５と接する面である。第１側壁上面２７ｅは、第２楔２６と接する面である。第１側壁下面２７ｄと第１側壁上面２７ｅとは、第１側壁下面２７ｄと第１側壁上面２７ｅの距離がベルト７の幅方向中央から幅端に向かって小さくなるように互いに傾く。第１側壁面２７ａにおいて、ベルト７の厚み方向の寸法は、ベルト７の厚みと同程度である。 The first side wall surface 27a is a surface in contact with the belt side surface 7b of the belt 7. The lower surface 27d of the first side wall is a surface in contact with the first wedge 25. The upper surface 27e of the first side wall is a surface in contact with the second wedge 26. The lower surface of the first side wall 27d and the upper surface of the first side wall 27e are tilted from each other so that the distance between the lower surface of the first side wall 27d and the upper surface of the first side wall 27e decreases from the center in the width direction of the belt 7 toward the width end. On the first side wall surface 27a, the dimension of the belt 7 in the thickness direction is about the same as the thickness of the belt 7.
　第２側壁２８は、第２側壁面２８ａと第２側壁下面２８ｄと第２側壁上面２８ｅとを有する。 The second side wall 28 has a second side wall surface 28a, a second side wall lower surface 28d, and a second side wall upper surface 28e.
　第２側壁面２８ａは、ベルト７のベルト側面７ｃと接する面である。第２側壁下面２８ｄは、第１楔２５と接する面である。第２側壁上面２８ｅは、第２楔２６と接する面である。第２側壁下面２８ｄと第２側壁上面２８ｅとは、第２側壁下面２８ｄと第２側壁上面２８ｅの距離がベルト７の幅方向中央から幅端に向かって小さくなるように互いに傾く。第２側壁面２８ａにおいて、ベルト７の厚み方向の寸法は、ベルト７の厚みと同程度である。 The second side wall surface 28a is a surface in contact with the belt side surface 7c of the belt 7. The lower surface 28d of the second side wall is a surface in contact with the first wedge 25. The upper surface 28e of the second side wall is a surface in contact with the second wedge 26. The second side wall lower surface 28d and the second side wall upper surface 28e are inclined to each other so that the distance between the second side wall lower surface 28d and the second side wall upper surface 28e decreases from the center in the width direction of the belt 7 toward the width end. On the second side wall surface 28a, the dimension of the belt 7 in the thickness direction is about the same as the thickness of the belt 7.
　第１楔２５の上部は、第１圧縮面２５ａの一側において第１側壁下面２７ｄと平行な面を有する。第１楔２５の上部は、第１圧縮面２５ａの他側において第２側壁下面２８ｄと平行な面を有する。 The upper portion of the first wedge 25 has a surface parallel to the lower surface 27d of the first side wall on one side of the first compression surface 25a. The upper portion of the first wedge 25 has a surface parallel to the lower surface 28d of the second side wall on the other side of the first compression surface 25a.
　第２楔２６の下部は、第２圧縮面２６ａの一側において第１側壁上面２７ｅと平行な面を有する。第２楔２６の下部は、第２圧縮面２６ａの他側において第２側壁上面２８ｅと平行な面を有する。 The lower portion of the second wedge 26 has a surface parallel to the upper surface 27e of the first side wall on one side of the second compression surface 26a. The lower portion of the second wedge 26 has a surface parallel to the upper surface 28e of the second side wall on the other side of the second compression surface 26a.
　ベルト把持具１２の第１変形例において、ベルト７が厚み方向に圧縮されると、第１楔２５と第２楔２６とにより、第１側壁２７と第２側壁２８とからベルト７に幅方向中央に向かう力（ベルト７の幅方向外側から幅方向中央部への力）が作用する。このため、荷重支持部材７１が長手方向に割れることを抑制できる。 In the first modification of the belt gripper 12, when the belt 7 is compressed in the thickness direction, the first wedge 25 and the second wedge 26 cause the first side wall 27 and the second side wall 28 to flow in the width direction to the belt 7. A force toward the center (a force from the outside of the belt 7 in the width direction to the center in the width direction) acts. Therefore, it is possible to prevent the load supporting member 71 from cracking in the longitudinal direction.
　また、ベルト７が厚み方向に圧縮される前の状態で、ベルト７と第１側壁２７との間とベルト７と第２側壁２８との間とに隙間を有していても、第１側壁２７と第２側壁２８とは、ベルト７の厚み方向の圧縮力によりベルト７と接触する方向に移動する。このため、ベルト７は、厚み方向に圧縮される早期の段階において第１側壁２７と第２側壁２８とに接触する。その結果、ベルト７に幅方向の圧縮力を早期に作用させることができる。 Further, even if there is a gap between the belt 7 and the first side wall 27 and between the belt 7 and the second side wall 28 in the state before the belt 7 is compressed in the thickness direction, the first side wall is formed. The 27 and the second side wall 28 move in the direction of contact with the belt 7 due to the compressive force in the thickness direction of the belt 7. Therefore, the belt 7 comes into contact with the first side wall 27 and the second side wall 28 at an early stage of compression in the thickness direction. As a result, the compression force in the width direction can be applied to the belt 7 at an early stage.
実施の形態４．
　図２７は実施の形態４におけるベルト把持具の断面図である。なお、実施の形態１の部分と同一又は相当部分には同一符号が付される。当該部分の説明は省略される。 Embodiment 4.
FIG. 27 is a cross-sectional view of the belt gripper according to the fourth embodiment. The same or corresponding parts as those of the first embodiment are designated by the same reference numerals. The explanation of the relevant part is omitted.
　図２７は、図６におけるＣ－Ｃ断面図である。図２７において、ハウジング２０は図示されない。 FIG. 27 is a cross-sectional view taken along the line CC in FIG. In FIG. 27, the housing 20 is not shown.
　実施の形態４のベルト把持具１２は、実施の形態１の図９におけるベルト把持具１２において第１側壁２７と第２側壁２８とがない場合に相当する。第１圧縮面２５ａと第２圧縮面２６ａとは、ベルト７の長手方向に平行な凹凸を有する。 The belt gripper 12 of the fourth embodiment corresponds to the case where the belt gripper 12 in FIG. 9 of the first embodiment does not have the first side wall 27 and the second side wall 28. The first compression surface 25a and the second compression surface 26a have irregularities parallel to the longitudinal direction of the belt 7.
　以上で説明した実施の形態４によれば、第１圧縮面２５ａと第２圧縮面２６ａとの凹凸は、ベルト７の被覆材７２の幅方向の広がりを抑制する。このため、荷重支持部材７１が長手方向に割れることを抑制できる。 According to the fourth embodiment described above, the unevenness between the first compression surface 25a and the second compression surface 26a suppresses the spread of the covering material 72 of the belt 7 in the width direction. Therefore, it is possible to prevent the load supporting member 71 from cracking in the longitudinal direction.
　例えば、第１圧縮面２５ａと第２圧縮面２６ａとにおいて、ローレット加工でベルト７の長手方向に平行な凹凸を形成し、第１圧縮面２５ａと第２圧縮面２６ａとにより矩形断面のベルト７を挟めばよい。この場合、第１圧縮面２５ａと第２圧縮面２６ａとに凹凸がない場合にくらべ、荷重支持部材７１が長手方向に割れることを約１／３倍に抑制できることが実験で確認されている。 For example, on the first compression surface 25a and the second compression surface 26a, unevenness parallel to the longitudinal direction of the belt 7 is formed by knurling, and the belt 7 having a rectangular cross section is formed by the first compression surface 25a and the second compression surface 26a. You just have to put. In this case, it has been experimentally confirmed that the load supporting member 71 can be suppressed from cracking in the longitudinal direction by about 1/3 times as compared with the case where the first compression surface 25a and the second compression surface 26a have no irregularities.
　また、ベルト把持具１２は、側壁を有さない。このため、ベルト７の幅方向の寸法が変化しても、ベルト７を容易に把持することができる。 Further, the belt gripper 12 does not have a side wall. Therefore, even if the dimension of the belt 7 in the width direction changes, the belt 7 can be easily gripped.
　次に、図２８を用いて、ベルト把持具１２の第１変形例を説明する。
　図２８は実施の形態４におけるベルト把持具の第１変形例の断面図である。 Next, a first modification of the belt gripper 12 will be described with reference to FIG. 28.
FIG. 28 is a cross-sectional view of a first modification of the belt gripper according to the fourth embodiment.
　図２８は、図６におけるＣ－Ｃ線での断面図である。図２８において、ハウジング２０は図示されない。 FIG. 28 is a cross-sectional view taken along the line CC in FIG. In FIG. 28, the housing 20 is not shown.
　ベルト把持具１２の第１変形例は、実施の形態１の図１０におけるベルト把持具１２において第１側壁２７と第２側壁２８とがない場合に相当する。 The first modification of the belt gripper 12 corresponds to the case where the belt gripper 12 in FIG. 10 of the first embodiment does not have the first side wall 27 and the second side wall 28.
　ベルト把持具１２の第１変形例においては、ベルト７が厚み方向に圧縮された際に、第１圧縮面２５ａと第２圧縮面２６ａとからもベルト７の幅方向中央に向かう力が被覆材７２に作用する。このため、第１圧縮面２５ａと第２圧縮面２６ａとが平坦である場合よりも、荷重支持部材７１が長手方向に割れることをより確実に抑制できる。 In the first modification of the belt gripper 12, when the belt 7 is compressed in the thickness direction, a force from the first compression surface 25a and the second compression surface 26a toward the center of the belt 7 in the width direction is applied to the covering material. Acts on 72. Therefore, it is possible to more reliably suppress the load supporting member 71 from cracking in the longitudinal direction than when the first compression surface 25a and the second compression surface 26a are flat.
　なお、エレベータのローピング方式は限定されない。また、実施の形態１から実施の形態４の構成を適宜組み合わせてもよい。さらに、実施の形態１から実施の形態４のベルト把持具１２または実施の形態１から実施の形態４の構成を適宜組み合わせたベルト把持具１２を機械室のないエレベータに適用してもよい。 The elevator roping method is not limited. Further, the configurations of the first to fourth embodiments may be combined as appropriate. Further, the belt gripper 12 of the first to fourth embodiments or the belt gripper 12 which appropriately combines the configurations of the first to fourth embodiments may be applied to an elevator without a machine room.
　以上のように、この発明に係るベルト把持具置は、エレベータに利用することができる。 As described above, the belt gripping device according to the present invention can be used for an elevator.
　１　昇降路、　２　機械室、　３　巻上機、　４　そらせ車、　５　制御装置、　６　駆動シーブ、　７　ベルト、　７ａ　ベルト下面、７ｃ　ベルト側面、　７ｄ　ベルト上面、　８　かご、　９　釣合おもり、　１０　かご枠、　１１　かご室、　１２　ベルト把持具、　１３　連結部材、　１３ａ　ピン穴、　１４　ピン、　１５　固定ボルト、　１６　固定ボルト、　２０　ハウジング、　２１　第１受け部材、　２２　第２受け部材、　２３　第１横部材、２３ａ　ピン穴、　２４　第２横部材、　２４ａ　ピン穴、　２５　第１楔、　２５ａ　第１圧縮面、　２５ｂ　第１側面、　２５ｃ　第２側面、　２５ｄ　第１受け面、　２５ｅ　第１側壁支持部、　２５ｆ　第２側壁支持部、　２５ｇ　めねじ穴、　２６　第２楔、　２６ａ　第２圧縮面、　２６ｂ　第２受け面、　２７　第１側壁、　２７ａ　第１側壁面、　２７ｂ　ボルト穴、　２７ｃ　第１側壁受け面、　２７ｄ　第１側壁下面、　２７ｅ　第１側壁上面、　２８　第２側壁、　２８ａ　第２側壁面、　２８ｂ　ボルト穴、　２８ｃ　第２側壁受け面、　２８ｄ　第２側壁下面、　２８ｅ　第２側壁上面、　３０　凹板、　３０ａ　第１圧縮面、　３０ｄ　第１受け面、　３１　凸板、　３１ａ　第２圧縮面、　３１ｂ　第２受け面、　７１　荷重支持部材、　７２　被覆材、　７３　高強度繊維、　７４　含侵樹脂 1 hoistway, 2 machine room, 3 hoisting machine, 4 wedge wheel, 5 control device, 6 drive sheave, 7 belt, 7a belt lower surface, 7c belt side surface, 7d belt upper surface, 8 basket, 9 balance weight, 10 basket Frame, 11 cage room, 12 belt gripper, 13 connecting member, 13a pin hole, 14 pin, 15 fixing bolt, 16 fixing bolt, 20 housing, 21 1st receiving member, 22 2nd receiving member, 23 1st horizontal member , 23a pin hole, 24 second horizontal member, 24a pin hole, 25 first wedge, 25a first compression surface, 25b first side surface, 25c second side surface, 25d first receiving surface, 25e first side wall support part, 25f 2nd side wall support, 25g female screw hole, 26 2nd wedge, 26a 2nd compression surface, 26b 2nd receiving surface, 27 1st side wall, 27a 1st side wall surface, 27b bolt hole, 27c 1st side wall receiving surface, 27d 1st side wall lower surface, 27e 1st side wall upper surface, 28 2nd side wall surface, 28a 2nd side wall surface, 28b bolt hole, 28c 2nd side wall receiving surface, 28d 2nd side wall lower surface, 28e 2nd side wall upper surface, 30 concave plate, 30a 1st compression surface, 30d 1st receiving surface, 31 convex plate, 31a 2nd compression surface, 31b 2nd receiving surface, 71 load bearing member, 72 covering material, 73 high-strength fiber, 74 impregnated resin

Claims (14)

  1. 　長手方向の荷重を負担する強化繊維を含む荷重支持部材と前記荷重支持部材の表面を覆う被覆材とから構成される扁平形状の断面を有するベルトに対し、前記ベルトの厚み方向の一側に位置する第１圧縮面と前記ベルトの幅方向の一側に位置する第１側壁面と前記ベルトの幅方向の他側に位置する第２側壁面とから形成される凹状の溝を有する第１押付け部材と、
    　前記ベルトの厚み方向の他側に位置し、前記ベルトを前記第１圧縮面とで挟むことで、前記ベルトに厚み方向の圧縮力を与える第２圧縮面を有する第２押付け部材と、
    を備え、
    　前記第１圧縮面と前記第２圧縮面とは、前記ベルトの幅方向の両端に位置する前記荷重支持部材の幅方向の端間距離よりも大きい幅を有し、
    　前記第１側壁面と前記第２側壁面とは、前記ベルトが前記第１圧縮面と前記第２圧縮面とで挟まれた状態で厚み方向に圧縮力を受けた際に、前記ベルトの幅方向において前記被覆材と接触し、前記ベルトの幅方向外側から幅方向中央への力が前記ベルトに作用するベルト把持具。     Positioned on one side in the thickness direction of the belt with respect to a belt having a flat cross section composed of a load supporting member containing reinforcing fibers that bear a load in the longitudinal direction and a covering material covering the surface of the load supporting member. A first pressing having a concave groove formed from a first compression surface, a first side wall surface located on one side in the width direction of the belt, and a second side wall surface located on the other side in the width direction of the belt. Members and
    A second pressing member located on the other side in the thickness direction of the belt and having a second compression surface that applies a compressive force in the thickness direction to the belt by sandwiching the belt with the first compression surface.
    With
    The first compression surface and the second compression surface have a width larger than the distance between the ends in the width direction of the load supporting member located at both ends in the width direction of the belt.
    The width of the first side wall surface and the second side wall surface is the width of the belt when the belt is sandwiched between the first compression surface and the second compression surface and receives a compressive force in the thickness direction. A belt gripper that comes into contact with the covering material in the direction and exerts a force on the belt from the outside in the width direction to the center in the width direction.
  2. 　前記第１押付け部材の溝の深さは、前記ベルトの厚さ以上であり、
    　前記第２押付け部材は、前記溝の深さと前記ベルトの厚さとの差分値以上の高さで前記溝の幅以下である幅を有した凸状の突起を有し、前記突起の先端に前記第２圧縮面を有する請求項１に記載のベルト把持具。     The depth of the groove of the first pressing member is equal to or greater than the thickness of the belt.
    The second pressing member has a convex protrusion having a width equal to or less than the width of the groove at a height equal to or more than a difference value between the depth of the groove and the thickness of the belt, and the tip of the protrusion has the convex protrusion. The belt gripper according to claim 1, which has a second compression surface.
  3. 　前記第１押付け部材の前記第１圧縮面の対向面である第１受け面と前記第２押付け部材の前記第２圧縮面の対向面である第２受け面とに接触し、前記第１押付け部材と前記第２押付け部材とを覆うハウジング、
    を備え、
    　前記第１押付け部材と前記第２押付け部材とのうちの少なくとも一方は、前記ベルトに作用する長手方向の荷重方向に沿って自らの圧縮面と自らの受け面との距離が小さくなる楔形状を有し、前記ハウジングの内部において楔機構により前記ベルトの厚み方向の圧縮力を与える請求項１または請求項２に記載のベルト把持具。     The first receiving surface, which is the facing surface of the first compression surface of the first pressing member, and the second receiving surface, which is the facing surface of the second compression surface of the second pressing member, come into contact with each other and the first pressing member is pressed. A housing that covers the member and the second pressing member,
    With
    At least one of the first pressing member and the second pressing member has a wedge shape in which the distance between its own compression surface and its own receiving surface decreases along the longitudinal load direction acting on the belt. The belt gripping tool according to claim 1 or 2, which has and applies a compressive force in the thickness direction of the belt by a wedge mechanism inside the housing.
  4. 　前記第１押付け部材と前記第２押付け部材とのうちの一方は、前記ベルトに作用する長手方向の荷重方向に沿って自らの圧縮面と自らの受け面の距離が小さくなる楔形状を有し、
    　前記第１押付け部材と前記第２押付け部材とのうちの他方は、自らの圧縮面と自らの受け面が平行な形状である請求項３に記載のベルト把持具。     One of the first pressing member and the second pressing member has a wedge shape in which the distance between its own compression surface and its own receiving surface becomes smaller along the longitudinal load direction acting on the belt. ,
    The belt gripper according to claim 3, wherein the other of the first pressing member and the second pressing member has a shape in which its own compression surface and its own receiving surface are parallel to each other.
  5. 　前記第１圧縮面と前記ベルトとの間の摩擦係数と前記第２圧縮面と前記ベルトとの間の摩擦係数とは、前記第１受け面と前記ハウジングとの間の摩擦係数と前記第２受け面と前記ハウジングとの間の摩擦係数とよりも大きい請求項３または請求項４に記載のベルト把持具。 The friction coefficient between the first compression surface and the belt and the friction coefficient between the second compression surface and the belt are the friction coefficient between the first receiving surface and the housing and the second. The belt gripper according to claim 3 or 4, which is larger than the coefficient of friction between the receiving surface and the housing.
  6. 　前記第１押付け部材において、前記第１側壁面を有する第１側壁部と前記第２側壁面を有する第２側壁部とのうちの少なくとも一方は、前記第１圧縮面を有する第１圧縮部とは別部品である請求項１から請求項５のいずれか一項に記載のベルト把持具。 In the first pressing member, at least one of the first side wall portion having the first side wall surface and the second side wall portion having the second side wall surface is the first compression part having the first compression surface. Is a belt gripper according to any one of claims 1 to 5, which is a separate part.
  7. 　前記第１側壁面と前記第２側壁面とは、前記ベルトの幅方向の距離が調整される機構を有する請求項６に記載のベルト把持具。 The belt gripping tool according to claim 6, wherein the first side wall surface and the second side wall surface have a mechanism for adjusting the distance in the width direction of the belt.
  8. 　前記第１側壁部と前記第２側壁部とのうちの少なくとも一方は、自らの側壁面と当該側壁面の対向面である側壁受け面との距離が前記ベルトに作用する長手方向の荷重の方向に沿って小さくなる楔形状を有し、楔機構により前記ベルトに幅方向の圧縮力を作用させることで、前記ベルトの幅方向の広がりを抑制する請求項６または請求項７に記載のベルト把持具。 At least one of the first side wall portion and the second side wall portion is the direction of the load in the longitudinal direction in which the distance between its own side wall surface and the side wall receiving surface which is the facing surface of the side wall surface acts on the belt. The belt gripping according to claim 6 or 7, which has a wedge shape that becomes smaller along the belt and suppresses the spread of the belt in the width direction by applying a compressive force in the width direction to the belt by a wedge mechanism. Ingredients.
  9. 　前記第１側壁部と前記第２側壁部とは、前記ベルトの厚み方向に対し、弾性率が前記ベルトの弾性率以下であり、前記第１押付け部材と前記第２押付け部材とからそれぞれ前記ベルトの厚み方向の圧縮力の一部を受ける請求項６から請求項８のいずれか一項に記載のベルト把持具。 The elastic modulus of the first side wall portion and the second side wall portion is equal to or less than the elastic modulus of the belt in the thickness direction of the belt, and the belt is formed from the first pressing member and the second pressing member, respectively. The belt gripper according to any one of claims 6 to 8, which receives a part of the compressive force in the thickness direction of the above.
  10. 　長手方向の荷重を負担する強化繊維を含む荷重支持部材と前記荷重支持部材の表面を覆う被覆材とから構成される扁平形状の断面を有するベルトに対し、前記ベルトの厚み方向の一側に位置する第１圧縮面を有する第１押付け部材と、
    　前記ベルトの厚み方向の他側に位置し、前記ベルトを前記第１圧縮面とで挟むことで、前記ベルトに厚み方向の圧縮力を与える第２圧縮面を有する第２押付け部材と、
    を備え、
    　前記第１圧縮面と前記第２圧縮面とのうちの少なくとも一方は、前記ベルトの幅方向の中央側に向かう分力を前記ベルトに作用させるベルト把持具。     Positioned on one side in the thickness direction of the belt with respect to a belt having a flat cross section composed of a load supporting member containing reinforcing fibers that bear a load in the longitudinal direction and a covering material covering the surface of the load supporting member. The first pressing member having the first compression surface to be
    A second pressing member located on the other side in the thickness direction of the belt and having a second compression surface that applies a compressive force in the thickness direction to the belt by sandwiching the belt with the first compression surface.
    With
    At least one of the first compression surface and the second compression surface is a belt gripper that exerts a component force toward the center side in the width direction of the belt on the belt.
  11. 　前記第１圧縮面と前記第２圧縮面との距離は、前記ベルトの幅方向の中央部の側から前記ベルトの幅方向の端部の側に向かって小さくなる請求項１から請求項１０のいずれか一項に記載のベルト把持具。 Claims 1 to 10 wherein the distance between the first compression surface and the second compression surface decreases from the side of the central portion in the width direction of the belt toward the side of the end portion in the width direction of the belt. The belt gripper according to any one of the items.
  12. 　前記第１圧縮面と前記第２圧縮面のうちの少なくとも一方は、前記ベルトの長手方向に平行な凹凸を有し、当該凹凸により前記ベルトの幅方向の変形を抑制する請求項１から請求項１１のいずれか一項に記載のベルト把持具。 Claims 1 to claim 1 to claim that at least one of the first compression surface and the second compression surface has irregularities parallel to the longitudinal direction of the belt, and the irregularities suppress deformation in the width direction of the belt. 11. The belt gripper according to any one of items 11.
  13. 　前記第１圧縮面と前記第２圧縮面とのうちの少なくとも一方は、前記ベルトの長手方向に垂直な凹凸を有し、当該凹凸により前記ベルトの長手方向の摩擦係数を増大させる請求項１から請求項１１のいずれか一項に記載のベルト把持具。 From claim 1, at least one of the first compression surface and the second compression surface has unevenness perpendicular to the longitudinal direction of the belt, and the unevenness increases the friction coefficient in the longitudinal direction of the belt. The belt gripper according to any one of claims 11.
  14. 　前記第１押付け部材と前記第２押付け部材とによる前記ベルトの厚み方向への圧縮力を締結力で与えるボルト、
    を有した請求項１から請求項１３のいずれか一項に記載のベルト把持具。     A bolt that applies a compressive force in the thickness direction of the belt by the first pressing member and the second pressing member by a fastening force.
    The belt gripping tool according to any one of claims 1 to 13.
PCT/JP2019/045482 2019-11-20 2019-11-20 Belt holding tool WO2021100154A1 (en)

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JP2021558102A JP7188616B2 (en) 2019-11-20 2019-11-20 belt gripper

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US20180162697A1 (en) * 2016-12-14 2018-06-14 Otis Elevator Company Elevator system suspension member termination with containment
JP6522268B1 (en) * 2018-07-20 2019-05-29 三菱電機株式会社 Elevator rope terminal structure

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