WO2008023685A1 - Chariot - Google Patents

Chariot Download PDF

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Publication number
WO2008023685A1
WO2008023685A1 PCT/JP2007/066160 JP2007066160W WO2008023685A1 WO 2008023685 A1 WO2008023685 A1 WO 2008023685A1 JP 2007066160 W JP2007066160 W JP 2007066160W WO 2008023685 A1 WO2008023685 A1 WO 2008023685A1
Authority
WO
WIPO (PCT)
Prior art keywords
wheel
wheels
central
fixed
turnable
Prior art date
Application number
PCT/JP2007/066160
Other languages
English (en)
Japanese (ja)
Inventor
Yoshio Takada
Nobuji Takada
Original Assignee
Polynest Co., Ltd.
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 Polynest Co., Ltd. filed Critical Polynest Co., Ltd.
Priority to JP2008530910A priority Critical patent/JP4339394B2/ja
Publication of WO2008023685A1 publication Critical patent/WO2008023685A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B33/00—Castors in general; Anti-clogging castors
    • B60B33/04—Castors in general; Anti-clogging castors adjustable, e.g. in height; linearly shifting castors
    • B60B33/045—Castors in general; Anti-clogging castors adjustable, e.g. in height; linearly shifting castors mounted resiliently, by means of dampers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B33/00—Castors in general; Anti-clogging castors
    • B60B33/0036—Castors in general; Anti-clogging castors characterised by type of wheels
    • B60B33/0039—Single wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B33/00—Castors in general; Anti-clogging castors
    • B60B33/0036—Castors in general; Anti-clogging castors characterised by type of wheels
    • B60B33/0042—Double or twin wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B33/00—Castors in general; Anti-clogging castors
    • B60B33/0047—Castors in general; Anti-clogging castors characterised by details of the rolling axle
    • B60B33/0049—Castors in general; Anti-clogging castors characterised by details of the rolling axle the rolling axle being horizontal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B33/00—Castors in general; Anti-clogging castors
    • B60B33/0047—Castors in general; Anti-clogging castors characterised by details of the rolling axle
    • B60B33/0057—Castors in general; Anti-clogging castors characterised by details of the rolling axle the rolling axle being offset from swivel axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B33/00—Castors in general; Anti-clogging castors
    • B60B33/006—Castors in general; Anti-clogging castors characterised by details of the swivel mechanism
    • B60B33/0063—Castors in general; Anti-clogging castors characterised by details of the swivel mechanism no swivelling action, i.e. no real caster
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B33/00—Castors in general; Anti-clogging castors
    • B60B33/006—Castors in general; Anti-clogging castors characterised by details of the swivel mechanism
    • B60B33/0065—Castors in general; Anti-clogging castors characterised by details of the swivel mechanism characterised by details of the swivel axis
    • B60B33/0068—Castors in general; Anti-clogging castors characterised by details of the swivel mechanism characterised by details of the swivel axis the swivel axis being vertical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B33/00—Castors in general; Anti-clogging castors
    • B60B33/006—Castors in general; Anti-clogging castors characterised by details of the swivel mechanism
    • B60B33/0065—Castors in general; Anti-clogging castors characterised by details of the swivel mechanism characterised by details of the swivel axis
    • B60B33/0073—Castors in general; Anti-clogging castors characterised by details of the swivel mechanism characterised by details of the swivel axis the swivel axis being symmetrical to wheel or wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B3/00—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
    • B62B3/001—Steering devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D53/00—Tractor-trailer combinations; Road trains
    • B62D53/005—Combinations with at least three axles and comprising two or more articulated parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D61/00—Motor vehicles or trailers, characterised by the arrangement or number of wheels, not otherwise provided for, e.g. four wheels in diamond pattern
    • B62D61/10—Motor vehicles or trailers, characterised by the arrangement or number of wheels, not otherwise provided for, e.g. four wheels in diamond pattern with more than four wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B2207/00—Joining hand-propelled vehicles or sledges together
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B2301/00—Wheel arrangements; Steering; Stability; Wheel suspension
    • B62B2301/08—Wheel arrangements; Steering; Stability; Wheel suspension comprising additional wheels to increase stability

Definitions

  • the present invention relates to a carriage used to carry luggage and the like, and more particularly, to a carriage having a function for suppressing the occurrence of an inner ring difference at the time of turning.
  • a bogie configured to support the front of a loading platform by a pair of left and right front wheels mounted turnable and to support the rear of the loading platform by a pair of left and right rear wheels mounted in a fixed (non-reversible) manner. It has been known. In this way, when a plurality of carts configured such that only the front wheels are capable of turning is connected and travels a passage in a factory, for example, for conveyance of parts, an inner ring difference occurs during turning, and corners smoothly pass. There was a problem that I could not do it.
  • Patent Document 3 Japanese Patent Application Laid-Open No. 2003-252263
  • Patent Document 4 Japanese Patent Application Laid-Open No. 9-212034
  • One fixed wheel is attached to the center of the bottom of the bogie, or one fixed wheel is attached to each end of the left and right extending frame disposed at the center of the bottom of the bogie. According to such a configuration, it is possible to reduce the inner ring difference at the time of turning while avoiding complication of the mechanism.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 10-76976
  • Patent Document 2 Japanese Patent Application Laid-Open No. 9 315 335
  • Patent Document 3 Japanese Patent Laid-Open No. 2003-252263
  • Patent Document 4 Japanese Patent Application Laid-Open No. 9 212034
  • the dolly may be used on a rough road surface or a soft road surface.
  • good running of the bogie may be difficult, and the function of suppressing the inner ring difference may not be exhibited in cornering.
  • measures such as providing a suspension including an impact absorbing mechanism can be considered in order to reduce the influence of the vibration and vertical movement of the bogie due to the unevenness of the road surface.
  • a bogie as disclosed in Patent Document 3 or 4 that is, a bogie provided with a fixed wheel at the center of the bogie bottom, etc. in addition to the diverting wheels supporting the four corners of the bogie bottom, Implementing the above measures to mitigate the impact of the project will result in a more complex structure and a greater cost increase than a conventional truck.
  • a first aspect of the present invention is a bogie
  • the apparatus comprises: first to fourth turnable wheels respectively supporting near four corners of the platform; and a non-turnable fifth wheel to support a central portion of the platform.
  • the fifth wheel is made of a pneumatic tire, and is fixed in a straight direction of travel.
  • a second aspect of the present invention is, according to the first aspect of the present invention.
  • the first to fourth wheels may be solid tires.
  • a third aspect of the present invention is, in the first aspect of the present invention.
  • the width of the fifth wheel is larger than the widths of the first to fourth wheels! /, According to a fourth aspect of the present invention, in the first aspect of the present invention,
  • the diameter of the fifth wheel is larger than the diameter of the first to fourth wheels !.
  • the position of the rotation axis for turning and the position of the wheel axis for traveling are deviated in the front-rear direction by a predetermined interval.
  • At least one non-turnable wheel supporting a central portion of the loading platform is provided.
  • a seventh aspect of the present invention is a bogie
  • An elastic mechanism is interposed between the loading platform and the fifth wheel, and biases the fifth wheel downward and is vertically displaceable.
  • An eighth aspect of the present invention relates to the seventh aspect of the present invention.
  • the elastic mechanism is
  • a second plate member rotatably coupled at one end to the first plate member and rotatably coupled to the fifth wheel;
  • a ninth aspect of the present invention relates to the seventh aspect of the present invention.
  • the first to fifth wheels may be solid tires.
  • a tenth aspect of the present invention is a bogie
  • the apparatus comprises: first to fourth turnable wheels respectively supporting near four corners of the platform; and a non-turnable fifth wheel to support a central portion of the platform.
  • the first to fifth wheels are solid tire forces
  • the fifth wheel is attached to the bed so that the lower end of the fifth wheel is positioned lower than the lower ends of the first force and the fourth wheel when the bed is horizontal.
  • the traveling direction is fixed in the straight direction
  • the solid tire constituting the fifth wheel is made of an elastic material softer than the material of the solid tire constituting the first to fourth wheels.
  • the fifth wheel whose traveling direction is fixed in the straight ahead direction supports the loading platform central portion, and thereby the first wheel is moved from the first depending on the pulling direction of the truck.
  • the fourth wheels the right front wheel and the right rear wheel turn in the opposite direction, and the left front wheel and the left rear wheel turn in the opposite direction, so the occurrence of the inner ring difference in the turning of the bogie is suppressed. Be done.
  • the fifth wheel that supports the center part of the cargo bed is configured using pneumatic tires, so the road surface on which the truck travels has irregularities or is soft and the road conditions are not good.
  • the pneumatic tire absorbs impacts and vibrations, so that the influence from the road surface can be mitigated, and straight running and turning can be appropriately performed.
  • the cost increase can be suppressed with the simple configuration of adding the fifth wheel as a fixed wheel using a pneumatic tire
  • the bogie in which the inner ring difference at the time of turning is suppressed is a place where the road conditions are not good. It can be used anywhere.
  • the first to fourth wheels are made of solid tires, it is possible that a puncture will not occur in the fifth wheel other than the fifth wheel. It is possible to continue using the dolly.
  • the width of the fifth wheel is larger than the widths of the first to fourth wheels, the influence of the road surface even in a poor road condition. Can effectively ease the truck to travel.
  • the diameter of the fifth wheel is larger than the diameters of the first to fourth wheels, the influence of the road surface can be obtained even in a poor road condition. Effectively mitigate And the truck can run well.
  • the position of the rotation axis for turning and the position of the wheel axis for traveling are predetermined in the front-rear direction. Since they are offset by an interval, when the carriage is pulled, the first to fourth wheels are easily turned according to the pulling direction, and the inner ring difference at the time of turning is effectively suppressed.
  • a plurality of fixed cars including the fifth wheel as the unturnable wheel for supporting the middle part of the platform in order to suppress the inner ring difference at the time of turning of the bogie. Because the wheels are provided, the load on the fixed wheels is distributed and wear on the fixed wheels is suppressed.
  • the non-redirectable wheel whose traveling direction is fixed in the straight ahead direction
  • the fifth wheel (fixed wheel) supports the center part of the loading platform, the right front wheel and the right rear wheel among the first to fourth wheels are opposite to each other according to the pulling direction of the bogie. Since the left front wheel and the left rear wheel turn in the opposite directions while turning, the occurrence of the inner ring difference in the turning of the bogie is suppressed.
  • the fifth wheel as a fixed wheel supporting the middle part of the cargo bed is vertically displaceable while being biased downward by an elastic mechanism, so that the road surface on which the bogie travels has unevenness. Even if it is a weak road surface and conditions are good, the elastic mechanism absorbs shocks and vibrations, and the influence from the road surface is mitigated, so that the truck travels straightly and turns properly. Is possible.
  • the fifth wheel as a fixed wheel is pressed against the road surface (traveling surface) by the elastic mechanism, even when the road conditions are not good, generation of the inner ring difference is suppressed in turning.
  • the fifth wheel as a fixed wheel for supporting the central part of the cargo bed is provided, and the elastic structure is interposed between the fixed wheel and the cargo bed, and the cost increase is suppressed while the cost increase is suppressed.
  • the truck whose inner ring difference at turning is suppressed can be used in places where the road conditions are not good.
  • the elastic mechanism interposed between the unturnable fifth wheel supporting the midsection of the loading platform and the loading platform rotatably connects the end portions.
  • the first and second plate members and the spring member it is possible to provide at low cost a bogie in which the inner ring difference at the time of turning is suppressed even at places with poor road conditions. it can.
  • the ninth aspect of the present invention not only the first to fourth steerable wheels but also the fifth non-turnable fifth wheel provided for suppressing the inner ring difference when the bogie turns Although the tire is a solid tire, the fifth wheel is always urged downward by the elastic mechanism and always in contact with the road surface even in places where the road conditions are not good. Therefore, unlike the case of using a pneumatic tire, it is possible to use a bogie in which the inner ring difference at the time of turning without concern about the occurrence of a puncture is suppressed.
  • the bogie can be configured such that the fifth wheel, which is a non-turnable wheel (fixed wheel) whose traveling direction is fixed in the straight ahead direction, supports the loading platform central portion. Since the right front wheel and the right rear wheel among the first to fourth wheels are turned in the opposite direction and the left front wheel and the left rear wheel are turned in the opposite direction according to the pulling direction of the truck. The occurrence of an inner ring difference during turning is suppressed.
  • the fifth wheel which is a non-turnable wheel (fixed wheel) whose traveling direction is fixed in the straight ahead direction, supports the loading platform central portion. Since the right front wheel and the right rear wheel among the first to fourth wheels are turned in the opposite direction and the left front wheel and the left rear wheel are turned in the opposite direction according to the pulling direction of the truck. The occurrence of an inner ring difference during turning is suppressed.
  • the solid tire constituting the fifth wheel as a fixed wheel supporting the middle part of the cargo bed is made of an elastic material softer than the material of the solid tire constituting the first to fourth wheels, and
  • the fifth wheel is attached to the bed so that the lower end of the fifth wheel is located below the lower ends of the first to fourth wheels when the bed is horizontal.
  • FIG. 1 is a bottom view showing a bogie according to a first embodiment of the present invention.
  • FIG. 2 is a side view showing the dolly according to the first embodiment.
  • FIG. 3 is a front view showing the dolly according to the first embodiment.
  • FIG. 4 is a plan view schematically showing a traveling state in the case where a plurality of carts according to the first embodiment are linked and turned (turned left).
  • FIG. 5 is a bottom view showing a bogie according to a second embodiment of the present invention.
  • FIG. 6 is a side view (A, B) showing the carriage according to the second embodiment.
  • FIG. 9 is a rear view showing a modification of the second embodiment.
  • Rotation axis of wheel support As ... Rotation axis of wheel support (rotation axis for turning)
  • FIG. 1 is a bottom view (bottom view) of the bogie according to the first embodiment of the present invention
  • FIG. 2 is a side view of the bogie according to the present embodiment
  • FIG. 3 is a bogie according to the present embodiment. It is a front view.
  • the traveling direction of the carriage is forward, the opposite direction to the traveling direction is backward, the left hand direction is left and the right hand direction is right when viewed from the top (the other embodiments) Also in
  • the carriage 100 includes a frame 10 formed in a rectangular frame shape with a rigid material such as steel to configure a loading platform, a right front wheel 21 and a left front wheel 22 supporting a front portion of the loading platform.
  • a rear connecting member 42 mounted at the center of the rear end of the frame 10.
  • the right front wheel 21, the left front wheel 22, the right rear wheel 23, and the left rear wheel 24 are all turning wheels capable of rotating about the vertical axis.
  • the central wheel 80 can not rotate about the vertical axis. Is a fixed wheel. The detailed configuration of these wheels will be described later.
  • Frame 10 is formed of a frame-shaped member 11 forming an outer frame of a loading space, first and second elongated members 12 and 13 attached to the front of the frame-shaped member 11 and extending in the left-right direction
  • the third and fourth elongated members 14 and 15 attached to the rear of the frame 11 and extending in the left and right direction, and the fifth and sixth elongated members attached to the center of the frame 11 and extending in the front and rear direction 16, 17, and a rigid plate-like member (not shown) is placed or mounted on it as needed.
  • frame 10 uses L-shaped steel, for example It is formed.
  • the right front wheel 21 and the left front wheel 22 are attached to the right end portion and the left end portion of the first and second elongated members 12 and 13 via members 120 and 121 described later, respectively.
  • the left rear wheel 23 and the left rear wheel 24 are attached to the right end and the left end of the third and fourth elongated members 14 and 15 through members 120 and 121 described later.
  • the central wheel 80 is attached to the central portion of the fifth and sixth elongated members 16 and 17 via members 220 and 221 described later.
  • each of the wheels 21 to 24 supporting the four corners of the bed forming the bottom of the bogie and the structure for attaching it to the frame 10 are the same.
  • the structure for attaching the frame 10 to the frame 10 is different from those four wheels 21-24. In the following, these structures will be described with reference to FIGS. 1 to 3 (refer mainly to FIG. 3).
  • Each of the four corner support wheels is constructed using a solid tire made of a material such as rubber which does not have a hollow structure.
  • Each of the four corner support wheels 2 !! to 24 is attached to the frame 10 as follows. That is, the wheel mounting base 120 is fixed at a predetermined position near four corners of the frame 10 by screws or the like, and the wheel mounting base 120 is supported by the wheel support base so that it can rotate about a rotation axis As extending in the vertical direction.
  • a member 121 is pivotally supported.
  • the wheel support member 121 includes two plate-like members 123 and 124 extending downward at predetermined intervals on the left and right sides thereof, and a wheel shaft 125 vertically penetrating the plate-like members 123 and 124.
  • Reference numeral 20 (each wheel 2;! To 24 is represented by a symbol “20”) is rotatably supported by a wheel shaft 125.
  • the four corner support wheels 2! To 24 function as turning wheels rotatable around the vertical axis.
  • the position of the wheelset 125 for traveling is slightly behind (by a predetermined distance) behind the position of the rotation axis As for turning of the wheel 20 (2;! To 24) as shown in FIG. There is.
  • the center wheel 80 is configured using a pneumatic tire made of a material such as rubber having a hollow structure.
  • the wheel mounting base 220 is also fixed to a predetermined position (central portion) of the frame 10 by means of a screw or the like. Take the four corner support wheels 2;! ⁇ 24 above Unlike the attachment, a wheel support member 221 is fixed to the wheel mounting base 220 by screws or welding. As a result, the central wheel 80 is a fixed wheel that can not rotate (cannot turn) around the vertical axis.
  • the wheel support member 221 includes two plate members 223 and 224 extending downward at predetermined intervals on the left and right sides thereof, and a wheel shaft 225 vertically penetrating the plate members 223 and 224,
  • the central wheel 80 is rotatably supported by a wheel shaft 225.
  • the plane perpendicular to the wheel shaft 225 is parallel to the front-rear direction of the bogie 100.
  • the central wheel 80 is attached to the frame 10 as a fixed wheel whose traveling direction is fixed in the front-rear direction (straight direction) of the carriage.
  • the diameter of the central wheel 80 is slightly larger than the diameter of the four-corner support wheels 2;! To 24, and the width of (the tire of) the central wheel 80 is also It is slightly wider than the width of the four corner support wheels 21-24 (tires)!
  • a connection hole 41h is provided at the tip of the front connecting member 41 as a pulling member, and the rear connecting member 42 is provided with a connecting pin 42p extending upward.
  • the connecting pin 42p By inserting the connecting pin 42p into the connecting hole 41h of the front connecting member 41 of another truck having the same structure, the other truck can be connected to the rear of the truck 100. Further, by inserting the connecting pin 42p of another truck having the same structure into the connecting hole 41h of the front connecting member 41 of the truck 100, the truck 100 can be connected to the rear of the other truck.
  • a central wheel 80 as a fixed wheel whose traveling direction is fixed in the straight direction is attached to the central portion of the frame 10, and four corner support wheels 2;
  • the position of 125 is slightly behind the rotation axis As of the turning of wheel 20 (2 !! to 24) (see FIG. 2). Therefore, when the front connecting member 41 fixed to the frame 10 is pulled in a direction other than the front / rear direction (straight direction) of the bogie 100, the bogie 100 revolves around the central wheel 80 according to the pulling direction. Therefore, among the four corner support wheels 21-24, the left and right front wheels 21 and 22 and the left and right rear wheels 23 and 24 turn in opposite directions.
  • FIG. 4 is a plan view schematically showing the traveling state of each of the bogies 100 a to OO d when a plurality of the bogies 100 according to the present embodiment are connected and towed by the tractor 500 with a motor. is there.
  • the bogie 100b turns to the left
  • the right front wheel 21 and the left front wheel 22 in the following bogie 100c turn in accordance with the pulling direction corresponding to the left turn.
  • the bogie 100c behaves to turn left around the central wheel 80, which is a fixed wheel, so the right rear wheel 23 is turned in the opposite direction to the turning direction of the right front wheel 21, and the left rear wheel 24 is turned. Turns in the direction opposite to the turning direction of the left front wheel 22.
  • the carriage 100c almost faithfully travels the traveling path of the leading carriage 100b.
  • the plurality of connected bogies 100a to 100d all almost follow the traveling path of the leading vehicle 500 which is the leading vehicle.
  • the central wheel 80 supporting the central portion of the bottom surface of the truck (carrier) is provided as the fixed wheel, so that as shown in FIG.
  • the front wheel 21 and the right rear wheel 23 turn in the opposite direction, and the left front wheel 22 and the left rear wheel 24 turn in the opposite direction, so the occurrence of the inner ring difference in the turning of the bogie 100 is suppressed.
  • the subsequent carriages will almost faithfully follow the traveling path of the preceding carriages.
  • a plurality of linked bogies can be smoothly run in a narrow passage having a part.
  • the central wheel 80 provided as a fixed wheel has a configuration using a pneumatic tire, so the road surface on which the bogie 100 travels (such as a passage in a factory) Even if the road surface condition is not good because the road surface is uneven or uneven, the pneumatic tire absorbs shocks and vibrations, etc. to reduce the influence of the road surface, and the vehicle travels straight and turns It becomes possible to run properly. Especially in cornering, the central wheel 80 using a pneumatic tire is in contact with the road even if the road conditions are not good. Therefore, the function of suppressing the inner ring difference of the bogie can be maintained regardless of the road surface conditions.
  • the increase in cost can be suppressed with a simple configuration in which the central wheel 80 as a fixed wheel using a pneumatic tire is added, and the inner ring difference at the time of turning is suppressed.
  • the truck can be used even in places with poor road conditions.
  • the diameter of the central wheel 80 using a pneumatic tire is slightly larger than the diameter of the four-corner support wheels 2;! -24, and the width of the central wheel 80 is also determined.
  • the four corners are slightly wider than the support wheels. As described above, these functions effectively to reduce the difference between inner wheels when turning and to reduce the influence of the road surface.
  • the pneumatic tire is used only at the central wheel 80, and at the four corner support wheels 2;! To 24, solid tires are used. Therefore, no puncture occurs on the wheels other than the central wheel 80, and even if a puncture occurs on the central wheel 80, the use of the vehicle 100 can be continued.
  • the pneumatic tire is used only at the central wheel 80, and the force is only at the center wheel 80.
  • the configuration of the frame of the bogie according to the present invention is not limited to the constitution shown in FIG. 1, and turning wheels for supporting the four corners of the bogie bottom are attached and fixed to the center part of the bogie bottom (loading platform). Other configurations may be employed as long as the wheel is mounted.
  • a force S is mounted on the central portion of the bottom of the bogie as a fixed wheel using a pneumatic tire, and only one central wheel 80 is attached, such fixed wheel is placed in the bottom of the bogie You may attach a plurality to the central part (for example, two in the front-rear direction at the center of the bottom of the bogie).
  • the position of 125 is slightly behind the rotation axis As of the turning of these wheels 2! To 24 (see FIG. 2), whereby the four corner supporting wheels 2!
  • the positions of the four corner support wheels 2!! ⁇ 24 wheel shaft 125 in the front-rear direction (the position on the plan view) and the four corner support wheels 2;! ⁇ 24 are adapted to be easily turned.
  • the configuration may be such that the position in the front-rear direction (the position on the plan view) of the rotation axis As of the turning is coincident.
  • FIG. 5 is a bottom view (bottom view) of the carriage according to the present embodiment
  • Fig. 6 is a side view of the carriage according to the present embodiment
  • Fig. 7 is a rear view of the carriage according to the present embodiment
  • 8 is a perspective view showing a central wheel and its attachment portion in the present embodiment.
  • the rear connecting member 42 is indicated by a dotted line in order to make the configuration of the mounting portion of the central wheel 90 easy to operate (the same applies to FIG. 9 described later).
  • 6 (A) and 7 (A) show the dolly 102 placed on the road surface and the central wheel 90 receiving anti-corrosion force F from the road surface.
  • FIGS. 6 (B) and 7 (B) shows the truck 102 with the central wheel 90 separated from the road surface.
  • the carriage 102 according to the present embodiment is different from the first embodiment in the configuration of the central wheel 90 and the attachment portion thereof, but the other parts are the same as those of the first embodiment.
  • the same reference numerals are given to the same parts and the description is omitted.
  • central wheel 90 is configured using a solid tire made of a material such as rubber that does not have a hollow structure, as with four-corner support wheels 2; This is different from the first embodiment in which pneumatic tires are used for the central wheel 80.
  • the mounting portion for mounting the central wheel 90 on the lower surface side of the platform is a hinge 243, first and second plate members 241 and 242 made of steel, and a coil. It comprises a spring member 245 and first and second bolts 247 and 248 as guide rods.
  • Hinge 243 is the first steel piece And 243 b, a second steel piece 243 b, and a connecting portion 243 c rotatably connecting these steel pieces 243 a and 243 b at their ends.
  • One ends of the first and second plate members 241 and 242 are fixed to the first and second steel pieces 243a and 243b of the hinge 243 by welding or the like, respectively.
  • the member 241 and the second plate member 242 are rotatably coupled.
  • the frame 10 in the present embodiment includes a seventh elongated member 18 attached to the frame-like member 11 slightly behind the central position thereof and extending in the left-right direction;
  • An eighth elongated member 19 mounted so as to be bridged between the fifth elongated member 16 and the sixth elongated member 17 is provided.
  • the first plate member 241 constituting the mounting portion of the central wheel 90 is mounted at the central portion on the lower surface side (bottom surface) of the bed. Specifically, both ends of the first plate member 241 are fixed to the seventh elongated member 18 and the eighth elongated member 19 by welding, screws or the like.
  • the second plate member 242 pivotably connected to the first plate member 241 by the hinge 243 has two through holes at the end opposite to the end connected to the hinge 243.
  • first and second bolts 247 and 248 as guide rods slidably pass through the through holes, respectively.
  • the ends (opposite of the bolt heads) of these first and second bolts 247, 248 are fixed to the first plate member 241 by means of nuts screwed to them, and the bolts of these bolts 247, 24 8 The head limits the pivoting angle of the second plate member 242.
  • the second plate member 242 has a cylindrical portion 246 protruding downward, and one end side of the coil-like spring member 245 is inserted into the cylindrical portion 246, and the other end (upper end) of the panel member 245. Is in contact with or fixed to the first plate member 241.
  • the second plate member 242 is biased downward by the spring member 245 and stays at the position restricted by the heads of the first and second bolts 247 and 248 when the central wheel 90 is separated from the road surface. There is.
  • the wheel support member 231 of the central wheel 90 is fixed to the lower surface of the second plate member 242 by screws or welding (FIG. 8). As a result, the central wheel 90 is a fixed wheel that can not rotate around the vertical axis (cannot turn).
  • the wheel support member 231 includes two plate-like members 233 and 234 extending downward at predetermined intervals on both left and right sides thereof, and a wheel shaft 235 vertically penetrating the plate-like members 233 and 234. Cage, center wheel 90 is wheel axle 2 It is rotatably supported by 35 ( Figures 7 and 8). Here, a plane perpendicular to the wheel shaft 235 is parallel to the front-rear direction of the carriage 102.
  • the central wheel 90 smoothly rotates force S.
  • the carriage 102 travels in a direction other than the forward and backward direction, the contact between the central wheel 90 and the road surface prevents the travel. Friction occurs in the direction. That is, the central wheel 90 is attached to the frame 10 through the attachment member as a fixed wheel whose traveling direction is fixed in the front-rear direction (straight direction) of the carriage.
  • the central wheel 90 supporting the central portion of the bottom surface of the bogie is provided as a fixed wheel fixed in the traveling direction in the straight direction.
  • the right front wheel 21 and the right rear wheel 23 turn in the opposite direction according to the pulling direction
  • the left front wheel 22 and the left rear wheel 24 turn in the opposite direction.
  • the occurrence of the inner ring difference in the rotation of the truck 102 is suppressed. Therefore, when a plurality of such carriages are connected and pulled, as shown in FIG. 4, the following carriage has a corner portion because it will almost faithfully follow the traveling path of the preceding carriage.
  • a plurality of connected bogies can be smoothly run in a narrow passage.
  • the wheel supporting member 231 of the central wheel 90 provided as a fixed wheel is fixed to the second plate member 242, and the second plate member 242 is hinged by the hinge 243. It is pivotable and biased downward by a spring member 245 (FIG. 8).
  • the central wheel 90 is vertically moved (generally an elastic mechanism) as a mounting portion composed of the hinge 243, the first and second plate members 241 and 242, the spring member 245 and the like. When traveling, it is biased downward and pressed against the road surface.
  • the mechanism absorbs shocks and vibrations and mitigates the effects from the road surface, making it possible to perform straight running and turning.
  • the panel mechanism presses the central wheel 90 downward (in the direction of the road surface) in the traveling state, the central wheel 90 is always in contact with the road surface.
  • the second embodiment is superior to the first embodiment in that the central wheel 90 is always in contact with the road regardless of the road surface condition.
  • the central wheel 80 is not separated from the road surface by using a pneumatic tire for the central wheel 80, while in the present embodiment, a coil-shaped spring member 245 or the like is used. This is because the center wheel 90 is pressed against the road surface by the panel mechanism as the mounting portion.
  • the durability as a bogie is improved without the force S that a puncture occurs.
  • the panel mechanism as described above may be provided only on the central wheel 90 which is necessary for all the wheels.
  • this spring mechanism has a simple configuration using the hinge 243, the first and second plate members 241 and 242, the panel member 245 and the like as described above. Therefore, it becomes possible to favorably use the bogie whose inner ring difference at turning is suppressed without causing a large increase in cost, even in a place where the road conditions are not good.
  • the attachment portion of the central wheel 90 in the second embodiment is not limited to the configuration shown in FIG. 8 and travels by the elastic force of the panel or the like and the elastic member (generally elastic body). It may be configured as an elastic mechanism capable of vertically displacing in accordance with the road surface condition (the unevenness of the road surface, etc.) while being urged downward and pressing against the road surface sometimes.
  • the second plate member 242 to which the wheel support member 231 of the central wheel 90 is fixed may be pivotable using the hinge 243 as in the second embodiment, instead of the second plate member 242.
  • the second plate member 242 may be configured to be vertically displaceable in parallel with the first plate member 241 (or the platform).
  • the mounting portion shown in FIG. 8 is configured to use a coiled spring member 245, it may be configured to use a panel instead. Also, a gas spring may be used as the panel mechanism as the mounting portion.
  • central wheel 90 only one central wheel 90 is provided, but the central wheel and the panel mechanism as its mounting portion are laterally or longitudinally in the central portion of the carriage.
  • a plurality may be provided in the direction.
  • two central wheels 91 and 92 and their attachment parts may be provided adjacent to each other in the left-right direction at the center of the carriage.
  • central wheels When two central wheels are provided, they may be arranged separately in the left-right direction, but among the wheels supporting the platform, the number of wheels not in contact with the road surface at the same time is minimized.
  • the central wheels are arranged adjacent as shown in FIG. If the number of wheels not coming in contact with the road surface (floating wheels) increases, the stability of traveling will decrease and problems such as generation of noise due to idle rotation of wheels floating off the road surface will occur.
  • the plurality of central wheels 91 and 92 may rotate independently of each other. However, in terms of anti-slip, it is preferable that their central wheels 91, 92 be configured to rotate in an individual manner.
  • FIG. 10 is a bottom view (bottom view) of the carriage according to the present embodiment
  • FIG. 11 is a side view of the carriage according to the present embodiment
  • FIG. 12 is a front view of the carriage according to the present embodiment.
  • the traction member 41 and its attachment member 51 are omitted in order to make the configuration of the attachment portion of the central wheels 91 and 92 easy to operate.
  • the carriage 103 according to this embodiment is different from that of the first embodiment in the configuration of the central wheels 91 and 92 and their attachment parts, but the basic configuration of the other parts is the above-described first embodiment. Since the same or corresponding parts are given the same reference symbols, detailed description will be omitted. The following description will focus on the configuration of parts that differ from the first embodiment. [0061]
  • the carriage according to the present embodiment also has no hollow structure, as in the first and second embodiments.
  • the central wheel in the present embodiment is composed of two wheels 91 and 92 that rotate integrally, and is softer than the material of the four corner support wheels 21 to 24 (for example, hard rubber), elastic material (for example, a solid tire made of urethane or a small elastic modulus, rubber, etc.) is used!
  • the frame 10 constituting the loading platform in the present embodiment is an elongated member 18 attached to the frame-like member 11 slightly forward and backward from its central position and extending in the left-right direction
  • An elongated member 16 a attached so as to be bridged between the elongated member 19, the front end central portion of the frame 10 and the central portion of the elongated member 18, and the rear end central portion of the frame 10
  • an elongated member 16b attached so as to be bridged with the central portion of the elongated member 19.
  • an elongated member attached so as to be bridged respectively between a portion slightly offset to the left and right from the central portion of the elongated member 18 and a portion slightly offset to the left and right from the central portion of the elongated member 19.
  • the members 17a and 17b are provided.
  • the front connecting member 41 as a pulling member in the present embodiment is rotatably mounted at the center of the front end portion of the frame 10, and the mounting members of the front connecting member 41 have two planes perpendicular to each other. It has two mounting pieces 51a, 51b and a cylindrical shaft member 51c. The two mounting pieces 51a, 51b have through holes for inserting both ends of the shaft member 51c, and both ends of the shaft member 51c are inserted into those through holes in the horizontal direction. It is fixed at the center of the front end of the frame 10 by welding or the like at a predetermined interval. Then, one end of the front connection member 41 is fixed to the shaft member 51 c by welding or the like, so that the front connection member 41 is rotatably attached to the frame 10.
  • Such a rotatable front connecting member 41 suppresses the inner ring difference at the time of turning when traveling on a bad road surface in which the plurality of bogies 103 connected as shown in FIG. 4 have unevenness.
  • one end of the front connecting member 41 may be fixed at the center of the front end portion of the frame 10 as in the first embodiment and the like instead of the force that is effective in performing this operation.
  • the central wheels 91 and 92 are fixed by screws or the like to a predetermined position (central portion) of the frame 10 via the wheel mounting base 220. That is, the left and right end portions of the wheel mounting base 220 are respectively fixed to the elongated members 17 a and 17 b, and the wheel supporting member 221 is fixed to the wheel mounting base 220. Are fixed by screws or welding. As a result, the central wheels 91 and 92 are non-rotatable (non-turnable) fixed wheels about the vertical axis. As shown in FIG. 12, the wheel supporting member 221 vertically penetrates the two plate-like members 223 and 224 extending downward at predetermined intervals on the left and right sides thereof and the plate-like features 223 and 224.
  • the two center wheels 91 and 92 are rotatably supported integrally by a wheel shaft 225.
  • a plane perpendicular to the wheel shaft 225 is parallel to the front-rear direction of the carriage 103.
  • the central wheels 91, 92 rotate smoothly.
  • the central wheels 91, 92 contact the road surface, thereby preventing the progress.
  • the central wheels 91 and 92 are attached to the frame 10 as fixed wheels whose traveling direction is fixed in the front-rear direction (straight direction) of the truck.
  • the lower ends of the central wheels 91 and 92 are slightly smaller than the lower ends of the four corner support wheels 2;
  • the vertical position of the wheel shaft 225 of the central wheels 91 and 92 is set to be positioned downward by ⁇ H).
  • the central wheels 91 and 92 are attached to the bed so that the lower ends thereof are positioned lower than the lower ends of the four corner support wheels 21 to 24, thereby traveling on a road surface with some unevenness. Even then, the central wheels 91 and 92 will come into contact with the road surface surely.
  • ⁇ is, for example, about 5 mm, and a suitable value of ⁇ varies depending on materials of the four corner support wheels 2!
  • the lower end of the central wheel 80 is positioned lower than the lower ends of the four corner support wheels 2;! To 24. It is attached to the loading platform ( Figure 2).
  • the central wheels 91 and 92 for supporting the central portion of the bottom of the bogie (carrier bed) are provided as fixed wheels fixed in the straight running direction in the traveling direction.
  • the occurrence of the inner ring difference when the carriage 103 turns is suppressed (see FIG. 10).
  • the following truck substantially follows the traveling path of the preceding truck. As it will be different, in a narrow passage with a corner, it is necessary to make the connected bogies run smoothly.
  • the tire constituting the central wheels 91 and 92 is made of an elastic material (for example, urethane) softer than the material of the tire constituting the four corner support wheels 2;
  • the lower ends of the central wheels 91 and 92 are positioned slightly lower than the lower ends of the four-corner supporting wheels 2;! To 24 when the carriage 103 is leveled (FIG. 11). For this reason, even if the road surface (such as the passage in the factory) on which the carriage 103 is traveling has unevenness or is weak and the road conditions are not good, the central wheels 91 and 92 are always on the road surface.
  • the inner ring difference at the time of turning of the carriage 103 can be suppressed. Moreover, as shown in FIGS. 10 and 12, since two wheels 91 and 92 are provided as the central wheels, side slip during turning is suppressed, and the road surface condition is not good or the traveling speed is high. Also in this case, the function of suppressing the inner ring difference at the time of turning can be exhibited well.
  • all the wheels including the central wheels 91 and 92 are configured using solid tires, so compared to the case where a pneumatic tire is used, a punk tire is used. Durability as a truck that eliminates the need to worry about the occurrence of
  • two central wheels 91 and 92 that rotate integrally as fixed wheels (non-reversible wheels) are provided, but instead, three or more central wheels may be provided. Yes, only one central wheel may be used. However, if the truck is used on a poor road surface or is run at high speed, if only one central wheel is provided, the width of the tire should be increased (for example, two central wheels 91, 92 or equivalent). It is preferable to use a wide tire).
  • the two central wheels 91 and 92 are configured to rotate integrally, from the viewpoint of preventing skidding, and the central wheels 91 and 92 are configured to rotate independently of each other. Even!
  • a panel mechanism like the second embodiment may be added to the attachment portion of the central wheels 91 and 92 (FIG. 8).
  • the central wheels 91 and 92 can be displaced in the vertical direction (substantially vertical direction), and the vehicle can travel downward when traveling. Since it is biased and pressed against the road surface, the force S can be further enhanced to suppress the inner ring difference at the time of turning. In this case, it is not always necessary to attach the central wheels 91 and 92 to the bed so that the lower ends thereof are positioned lower than the lower ends of the four corner support wheels 21 to 24 (see FIG. 11).
  • the present invention is applied to a bogie used to transport luggage and the like, and is particularly suitable for a bogie having a function for suppressing the occurrence of an inner ring difference at the time of turning.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Handcart (AREA)

Abstract

Le but de l'invention est d'utiliser de manière satisfaisante, même lorsque la chaussée est en mauvais état, un chariot dont la différence de vitesse de rotation de la roulette intérieure est limitée lorsque ledit chariot effectue un virage, tout en limitant la complexité structurelle et le coût dudit chariot. Des roulettes (21-24) supportant les quatre coins de la surface inférieure (plate-forme de chargement) d'un chariot sont montées sur un châssis (10) et constituent des roulettes de support des quatre coins, et une roulette supportant la partie centrale de la surface inférieure du chariot sert de roulette centrale (80). Les roulettes de support des quatre coins (21-24) se présentent sous la forme de roulettes pivotantes dures, qui peuvent tourner sur leurs axes verticaux. La roulette centrale (80) se présente sous la forme d'une roulette fixe pneumatique, qui ne peut pas tourner sur l'axe vertical et est orientée dans le sens de la marche du chariot (100).
PCT/JP2007/066160 2006-08-24 2007-08-21 Chariot WO2008023685A1 (fr)

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JP2006227423 2006-08-24
JP2006-227423 2006-08-24
JP2006307660A JP2007030882A (ja) 2006-08-24 2006-11-14 台車
JP2006-307660 2006-11-14

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Cited By (6)

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JP2010095143A (ja) * 2008-10-16 2010-04-30 Tomakku Kk 台車
JP2012051399A (ja) * 2010-08-31 2012-03-15 Yazaki Corp 作業台車
JP2015107799A (ja) * 2014-12-11 2015-06-11 矢崎総業株式会社 作業台車
JP2016120766A (ja) * 2014-12-24 2016-07-07 トヨタ車体株式会社 搬送台車
JP2018184016A (ja) * 2017-04-24 2018-11-22 清水建設株式会社 搬送台車
US20220281499A1 (en) * 2021-02-10 2022-09-08 Intermetro Industries Corporation Closed Case Cart

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JP2008296609A (ja) * 2007-05-29 2008-12-11 Tomakku:Kk 牽引台車
JP5437173B2 (ja) * 2010-06-15 2014-03-12 トマック株式会社 牽引台車
KR101119510B1 (ko) 2011-10-21 2012-02-28 주식회사 맥스디앤티 디스플레이 패널 에이징용 운반대차
CN103754284A (zh) * 2014-01-28 2014-04-30 浙江诺力机械股份有限公司 一种可以四向行驶的工业车辆及该种工业车辆的行走机构
JP6581935B2 (ja) * 2016-03-28 2019-09-25 株式会社ピカコーポレイション 運搬台車
RU2760775C1 (ru) * 2018-07-23 2021-11-30 Пьетро ЛАУДАНИ Заниженная двунаправленная тележка

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JPH0331660Y2 (fr) * 1985-06-07 1991-07-04
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JPH07101366A (ja) * 1993-10-01 1995-04-18 Hisatoho Oogawara ステップ走行可能車両と車両のステップ走行用アダプタ
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JP2010095143A (ja) * 2008-10-16 2010-04-30 Tomakku Kk 台車
JP2012051399A (ja) * 2010-08-31 2012-03-15 Yazaki Corp 作業台車
JP2015107799A (ja) * 2014-12-11 2015-06-11 矢崎総業株式会社 作業台車
JP2016120766A (ja) * 2014-12-24 2016-07-07 トヨタ車体株式会社 搬送台車
JP2018184016A (ja) * 2017-04-24 2018-11-22 清水建設株式会社 搬送台車
US20220281499A1 (en) * 2021-02-10 2022-09-08 Intermetro Industries Corporation Closed Case Cart

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