WO2015029162A1 - Rim-securing structure for transport vehicle - Google Patents

Rim-securing structure for transport vehicle Download PDF

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Publication number
WO2015029162A1
WO2015029162A1 PCT/JP2013/073013 JP2013073013W WO2015029162A1 WO 2015029162 A1 WO2015029162 A1 WO 2015029162A1 JP 2013073013 W JP2013073013 W JP 2013073013W WO 2015029162 A1 WO2015029162 A1 WO 2015029162A1
Authority
WO
WIPO (PCT)
Prior art keywords
axle
rim
peripheral surface
clamp tool
outer peripheral
Prior art date
Application number
PCT/JP2013/073013
Other languages
French (fr)
Japanese (ja)
Inventor
池田　純
Original Assignee
日立建機株式会社
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 日立建機株式会社 filed Critical 日立建機株式会社
Priority to PCT/JP2013/073013 priority Critical patent/WO2015029162A1/en
Publication of WO2015029162A1 publication Critical patent/WO2015029162A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B11/00—Units comprising multiple wheels arranged side by side; Wheels having more than one rim or capable of carrying more than one tyre
    • B60B11/06—Wheels with more than one rim mounted on a single wheel body
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B23/00—Attaching rim to wheel body
    • B60B23/04—Attaching rim to wheel body by bayonet joint, screw-thread, or like attachments
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
    • F16B21/10—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
    • F16D1/08—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key
    • F16D1/09—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping due to axial loading of at least one pair of conical surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B2310/00—Manufacturing methods
    • B60B2310/30—Manufacturing methods joining
    • B60B2310/306—Manufacturing methods joining by clamping or wedging, e.g. by clamping inserts as joining means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B2900/00—Purpose of invention
    • B60B2900/10—Reduction of
    • B60B2900/113—Production or maintenance time
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B2900/00—Purpose of invention
    • B60B2900/30—Increase in
    • B60B2900/331—Safety or security
    • B60B2900/3314—Safety or security during production or assembly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2/00—Friction-grip releasable fastenings
    • F16B2/20—Clips, i.e. with gripping action effected solely by the inherent resistance to deformation of the material of the fastening
    • F16B2/22—Clips, i.e. with gripping action effected solely by the inherent resistance to deformation of the material of the fastening of resilient material, e.g. rubbery material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
    • F16B21/02—Releasable fastening devices locking by rotation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
    • F16D1/08—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key
    • F16D1/0876—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with axial keys and no other radial clamping

Definitions

  • the present invention relates to a rim fixing structure for a transport vehicle, and more particularly to a rim fixing structure for fixing a rim to an axle using a wedge-shaped clamp.
  • High-capacity transport vehicles such as dump trucks that transport mined crushed stone, use large-diameter rear wheels that can withstand the load. For this reason, in the dump truck, large-diameter axles that are driven to rotate by the output of the motor are arranged on both sides of the frame in the vehicle width direction. Then, rear wheels are mounted on the axle. At the rear wheel, an annular rim is fitted to the outer peripheral surface of the axle, and the rim is fixed to the axle, and then a rubber tire is assembled to the rim, or a rim on which the tire has been assembled is fixed to the axle. Is generally done.
  • a structure that uses a clamp formed of a band-shaped member called a dagger clamp is frequently used.
  • the rim is fixed by forming a tapered surface on the inner peripheral surface of the rim, and fitting the rim to the outer peripheral surface of the axle that forms the rim arrangement surface. Is inserted into an annular gap between the outer peripheral surface of the axle and the inner peripheral surface of the rim.
  • the clamp device has an inner surface that follows the outer peripheral surface of the axle on the inner side, and has an outer surface with a tapered surface on the outer side, and is configured in a strip shape. Then, the clamping tool is manually inserted into a plurality of annular gaps between the outer peripheral surface of the axle and the inner peripheral surface of the rim while overlapping the outer peripheral surface of the axle. By this insertion, the taper surface of the clamp tool comes into contact with the taper surface of the rim, and the rim is fixed to the axle by the pressing force provided by the wedge.
  • ⁇ Clamping tools are required to have a fixed strength that can withstand high load. For this reason, the clamp tool has a high weight. For example, it has about 50 kg with only a single clamp. For this reason, the handleability of the clamp is poor.
  • the rim is fixed by manually inserting a plurality of such clamps from around the axle.
  • the clamp tool tends to be inserted in an unexpected direction when the clamp tool is inserted into the gap between the axle and the rim due to poor handling. In other words, it should be inserted straight along the axial direction of the axle, but it is likely to be inserted obliquely. In particular, when inserting the clamp tool into the vehicle longitudinal direction with the axle center of the axle in between, the operator is forced into an unreasonable working posture, so it is difficult to insert the clamp tool straight into the axle axis direction.
  • the taper surface of the clamp tool abuts against the taper surface of the rim, but if the clamp tool is tilted and inserted as described above, The taper surface of the clamp tool tends to come into contact with the taper surface. For this reason, the rim cannot secure the desired fixing force.
  • the rear wheel made up of double tires has the inner rim and outer rim on the outer peripheral surface of the axle fixed together by a clamp inserted from the end of the axle. If it is tilted, it will affect the fixing of the rim on both the inner side and the outer side.
  • an object of the present invention is to provide a rim fixing structure for a transport vehicle in which a clamp tool can be easily inserted straight into the axial center direction of the axle from the gap between the axle and the rim.
  • the present invention includes an axle having an outer peripheral surface that forms a rim mounting surface, disposed on a side in a vehicle width direction of a vehicle, and an inner peripheral surface having a tapered surface that is inclined toward the axle in a radial direction on one end side.
  • An annular rim disposed around the axle by fitting the inner circumference to the outer circumference of the axle, an inner surface overlapping the outer circumference of the axle, and an outer surface having a tapered surface at one end.
  • a wedge-shaped clamp that can be inserted into an annular gap between the outer peripheral surface of the axle and the inner peripheral surface of the rim, and from the end side of the axle, the outer peripheral surface of the axle and the inner periphery of the rim.
  • the clamp tool is pressed against the taper surface of the rim by inserting the clamp tool into the annular gap with the surface from a plurality of locations while superimposing the inner surface on the outer peripheral surface of the axle.
  • a rim fixing structure for a transport vehicle for fixing a rim to the axle Of the outer peripheral surface of the axle and the inner surface of the clamp, at least the outer peripheral surface of the axle is provided with a guide structure for guiding the direction of the clamp inserted into the annular gap in a predetermined direction. (Claim 1).
  • the guide structure portion is provided on the outer peripheral surface of the axle along the axial direction of the axle, and on the inner surface of the clamp tool along the insertion direction of the clamp tool.
  • the projecting portion is configured to have a groove portion that can enter and exit (claim 2).
  • the guide structure portion includes a groove portion provided on the outer peripheral surface of the axle along the axial center direction of the axle, and the groove portion provided on the inner surface of the clamp tool along the insertion direction of the clamp tool. And a protrusion that can enter and exit.
  • the guide structure portion is provided on the outer peripheral surface, located on both sides of the clamp tool intersecting the insertion direction of the clamp tool, and a pair of guide strips for restricting the inserted clamp tool from both sides.
  • the projecting portion and the groove portion are formed in a tapered shape in which both sides gradually approach as the insertion of the clamp device proceeds (Claim 5).
  • the clamp tool by inserting the clamp tool into the gap between the axle and the rim from the guide structure portion, the clamp tool is inserted to the back while being guided by the guide structure portion.
  • the clamp tool that is difficult to handle is inserted straight in the axial direction of the axle in a predetermined direction, that is, without tilting, by the guidance of the guide structure.
  • the guide structure can be realized with a simple structure by making the structure of the guide structure a combination of a groove and a protrusion, or by guiding the clamp tool with a pair of guide strips from both sides. (Claims 2 to 4).
  • the both sides of the groove part and the projecting part tapered so that the insertion of the clamp tool gradually proceeds, even if the groove part and the projecting part are slightly shifted when inserting the clamp tool, it is easy to fit.
  • the clamping tool is gradually corrected to the intended direction, so that the clamping tool can be correctly inserted (claims 5 and 6).
  • the perspective view which shows the external appearance of the transport vehicle which concerns on the 1st Embodiment of this invention.
  • Sectional drawing which shows the structure which fixes the rear wheel of the transport vehicle.
  • the disassembled perspective view which decomposed
  • the perspective view which shows the projection part of the axle outer peripheral surface which comprises the guide structure part which guides the clamp tool.
  • the perspective view which similarly shows the groove part of the inner surface of a clamp tool. Sectional drawing explaining the time of inserting a clamp tool between the outer peripheral surface of an axle shaft, and the inner peripheral surface of a rim
  • Sectional drawing which shows the rim fixing structure used as the principal part of the 2nd Embodiment of this invention.
  • the perspective view which shows the projection part of the outer peripheral surface of a different axle shaft used as the principal part of the 4th Embodiment of this invention.
  • the perspective view which shows the groove part of the clamp tool inner surface used as a pair with the projection part The perspective view which shows the protrusion part of the outer peripheral surface of the axle shaft used as the principal part of the 6th Embodiment of this invention.
  • FIG. 1 shows the appearance of a transport vehicle to which the present invention is applied, for example, a dump truck.
  • the arrow F in FIG. 1 indicates the front side of the dump truck
  • the arrow R indicates the rear side of the dump truck.
  • reference numeral 1 denotes a frame extending in the longitudinal direction of the vehicle constituting the body of the dump truck
  • reference numeral 2 denotes front wheels provided on both sides of the front portion of the frame 1
  • reference numeral 3 denotes The rear wheels provided on both sides of the rear portion of the frame 1 are shown.
  • reference numeral 5 is a vessel provided in the center to the rear upper part of the frame 1
  • reference numeral 6 is a front deck provided in the front upper part of the frame 1
  • reference numeral 7 is a cabin provided on one side of the front deck 6 in the vehicle width direction.
  • Reference numeral 8 denotes a cabinet provided on the front deck 6 adjacent to the cabin 7.
  • FIG. 2 shows a partial cross section of one side of the electric axle unit 10.
  • the electric axle unit 10 includes a cylindrical axle case 11 extending in the vehicle width direction, a pair of electric motors 12 housed on both left and right sides of the axle case 11, and ends of the axle case 11. It has the cylindrical axle 13 arrange
  • the speed reduction unit 14 includes a planetary gear type speed reduction mechanism 14b.
  • the axles 13 arranged on both sides in the vehicle width direction are independently driven to rotate by the left and right electric motors 12.
  • a rear wheel 3 composed of a double tire is mounted on each of the left and right axles 13.
  • FIG. 3 is an exploded view showing the main structure around the axle 13.
  • the structure for assembling the rear wheel 3 to the axle 13 will be described with reference to FIGS. 2 and 3.
  • the following structure is used on the axle 13 side.
  • the outer peripheral surface 13a of the axle 13 forms an annular rim mounting surface.
  • An annular receiving projection 15 is provided on the outer peripheral edge of the end located on the inner side in the vehicle width direction of the rim mounting surface.
  • a tapered surface 15 a is formed on the outer side of the annular receiving projection 15 in the vehicle width direction.
  • a cylindrical casing 14a of the speed reduction unit 14 is assembled at the center of the end surface located on the outer side in the vehicle width direction of the axle 13.
  • the casing 14a is formed with an outer diameter smaller than the outer diameter of the axle 13, and the outer peripheral end of the axle 13 having a stepped shape is exposed to the outside.
  • a plurality of stud bolts 15x are sequentially arranged in the circumferential direction on the exposed annular end face, for example, with two as a set.
  • a double tire in which two rubber running tires 16 are arranged in parallel on the inner side in the vehicle width direction and the outer side in the vehicle width direction is used.
  • An inner side rear wheel 17 disposed on the inner side in the vehicle width direction and an outer side rear wheel 18 disposed on the outer side in the vehicle width direction are both an annular rim 19 and an annular rim 19 attached to the outer periphery of the rim 19.
  • the rim 19 includes an annular rim base 19a having an inner peripheral surface 19d that fits on the outer peripheral surface of the axle 13, and a pair of rim sides 19b that are assembled to both ends of the rim base 19a.
  • a tapered surface 20 that is inclined toward the axle 13 in the radial direction is formed as shown in FIG.
  • the tapered surface 20 is formed by a slope facing the tapered surface 15a of the receiving projection 15. With this taper surface 20 as a boundary, the inner peripheral surface on one side of the inner peripheral surface 19d has a diameter equivalent to the outer diameter of the axle 13, and the inner peripheral surface on the other side has a slightly larger diameter. Yes.
  • the same rim 19 is shared by the vehicle width direction inside and outside. That is, the rim 19x disposed on the outer side in the vehicle width direction is used in a posture in which the tapered surface 20 is disposed on the inner side in the vehicle width direction. On the other hand, the rim 19y disposed on the inner side in the vehicle width direction is used in a posture in which the tapered surface 20 is disposed on the outer side in the vehicle width direction.
  • Each rim 19x, 19y is fixed by a rim fixing structure using a plurality of clamps 25 called a dagger clamp, for example, as shown in FIG.
  • the clamp tool 25 is inserted from the end side of the axle 13 into a plurality of locations of an annular gap ⁇ formed between the outer peripheral surface 13a of the axle 13 and the inner peripheral surface 19d of the rim 19x, and the rims 19x and 19y are inserted.
  • the clamp tool 25 a strip-shaped member such as a steel member that can withstand a high load is used.
  • the clamp tool 25 has a thickness dimension that can be inserted into the gap ⁇ between the outer peripheral surface 13a of the axle 13 and the inner peripheral surface 19d of the rim 19x as shown in FIGS. 2 to 4 and 7. It consists of a plate-shaped clamp member.
  • tip part comprises an insertion end, and the base end part bent in the L-shape forms the fixed seat 26.
  • the shape in the width direction of the clamp tool 25 is curved in an arc shape that follows the outer peripheral surface 13a of the axle 13.
  • the inner surface 25a located inside the arc is a surface that overlaps with the outer peripheral surface 13a of the axle 13, and is opposite.
  • the outer surface 25b located outside the arc is a surface facing the inner peripheral surface 19d of the rim 19x.
  • the clamp tool 25 has a wedge shape, and a tapered surface 27 is formed on the entire tip of the outer surface 25b.
  • the taper surface 27 is composed of an inclined surface that intersects the inner surface 25a end at an acute angle.
  • the tapered surface 27 faces the tapered surface 20 of the rim 19x, for example. That is, the taper surface 27 that draws an arc shape in the width direction is a portion that faces the ring-shaped taper surface 20 of the rim 19x.
  • the fixed seat 26 bent into an L shape of the clamp member is provided with a set of through holes 26a into which a set of stud bolts 15x of the stud bolts 15x of the axle 13 can be inserted.
  • the rims 19x and 19y are fixed using the tapered surface 27 and the through hole 26a.
  • the clamp tool 25 is manually aligned with the set of stud bolts 15x and the set of through holes 26a, with the inner surface portion of the tip overlapped with the outer peripheral surface 13a of the axle 13, and from the tip portion to the axle 13 Is inserted into a gap ⁇ between the outer peripheral surface 13a of the rim 19x and the inner peripheral surface 19d of the rim 19x. Then, the clamp tool 25 enters the inner side of the clearance ⁇ while the stud bolt 15x is inserted into the through hole 26a while being in sliding contact with the outer peripheral surface 13a of the axle 13 and the inner peripheral surface 19d of the rim 19.
  • the tapered surface 27 at the front end abuts against the tapered surface 20 of the rim 19x.
  • the tapered surfaces 20 are pushed.
  • a pressing force is applied to the tapered surface 20 to expand the tapered surface 20 to the periphery.
  • the rim 19 x is fixed to the outer peripheral surface 13 a of the axle 13 by the wedge effect by the tapered surfaces 20 and 27 brought about by this insertion work.
  • the tapered surface 20 contacts the tapered surface 15a, and the rim 19y is fixed to the outer peripheral surface 13a of the axle 13 by the wedge effect.
  • Such an insertion operation of the clamp tool 25 is performed at each position of the annular gap ⁇ for each set of the stud bolts 15x, and the rims 19x and 19y are fixed to the axle 13 at the same time. Thereafter, the traveling tires 16 are assembled to the rims 19x and 19y, respectively. Incidentally, the traveling tire 16 is fixed to the rims 19x and 19y by a fixing tool, here, a wedge member 31a and a ring member 31b.
  • the clamp tool 25 is a heavy object, it is difficult to handle it manually. For this reason, when the clamp tool 25 is inserted into the gap ⁇ between the axle 13 and the rim 19x, the clamp tool 25 is not straight but is likely to be inclined and inserted in an unexpected direction. Therefore, the guide structure part 30 is provided in the axle shaft 13 or the clamp tool 25 so that it can be inserted straight. 5 to 7 show the structure of each part of the guide structure 30. FIG.
  • the guide structure portion 30 has a structure in which, for example, a protrusion portion 32 is provided on the outer peripheral surface 13a of the axle 13 and a groove portion 35 is provided on the inner surface 25a of the clamp tool 25.
  • a protrusion portion 32 is provided on the outer peripheral surface 13a of the axle 13 and a groove portion 35 is provided on the inner surface 25a of the clamp tool 25.
  • the protrusion 32 the outer peripheral surface 13 a of the axle 13 on which the outer rim 19 x fits is provided at each part corresponding to each position of the stud bolt assembly.
  • a protrusion 33 extending linearly along the axial direction of the axle 13 is provided.
  • the protrusion 33 the cross section of the direction orthogonal to a longitudinal direction has comprised the square shape.
  • the groove portion 35 is configured by forming a linear groove 36 extending in the insertion direction of the clamp tool 25, for example, at a central portion in the width direction of the inner surface 25 a of the clamp tool 25.
  • the straight groove 36 has a groove width in which the protrusion 32 fits. Further, the straight groove 36 is formed in a wide area where the entire protrusion 33 is accommodated from the tip of the clamp tool 25.
  • the linear groove 36 allows the protrusion 33 to enter and exit the linear groove 36 with the groove end opening at the tip of the clamp tool 25 as an entrance / exit 36a.
  • the clamp tool 25 has a straight difference in the axial direction of the axle 13 from the gap ⁇ between the axle 13 and the rim 19x using the protrusions 33 of the outer peripheral surface 13a and the linear groove 36 of the inner surface 25a as a guide. It is configured to be included.
  • the entrance / exit 36a at the tip of the clamp 25 is widened so that the protrusion 33 can easily enter. That is, the entrance / exit 36a is configured by an expanded portion 36b that gradually expands in an arc shape as it goes toward the tip of the clamp tool 25.
  • the clamp tool 25 is manually inserted from the guide structure 30 as shown in FIG. .
  • the outer peripheral surface 13a of the axle 13 and the inner periphery of the rim 19x from the end side of the axle 13 with reference to the center in the width direction where the entrance / exit 36a of the clamp 25 is located and the position of the pair of through holes 26a.
  • the clamp tool 25 is inserted into the gap ⁇ between the surfaces 19 d so that the protrusion 33 enters the linear groove 36.
  • the clamp tool 25 to be inserted is inserted into the gap ⁇ in a predetermined direction while being guided by the linear protrusion 33. That is, the clamp tool 25 is inserted straight without tilting. Thereby, even the clamp tool 25 which is difficult to handle can be inserted straight. Therefore, the clamp 25 can be easily inserted straight into the gap ⁇ between the outer peripheral surface 13a of the axle 13 and the inner peripheral surface 19d of the rim 19x without requiring a troublesome correction work by a skilled person.
  • the contact of the taper surface 27 of the clamp tool 25 with the taper surface 20 of the rim 19x is eliminated, and the rim 19x can be fixed with a stable fixing strength.
  • the inner rim 19y and the outer rim 19x on the axle 13 are fixed together with the clamp 25, troublesome work can be suppressed as much as possible, which is effective.
  • a structure in which the protrusion 32 and the groove 35 are combined is used for the guide structure 30, a simple structure is sufficient.
  • the present invention is not limited to the first embodiment described above.
  • the sixth embodiment shown in FIGS. 15 and 16, the seventh embodiment shown in FIG. 17, the eighth embodiment shown in FIGS. 18 and 19, and the ninth embodiment shown in FIG. The tenth embodiment shown in FIGS. 21 and 22, the eleventh embodiment shown in FIG. 23, and the twelfth embodiment shown in FIG.
  • the protrusion 32 on the outer peripheral surface of the axle 13 is composed of a plurality of protrusions 40 arranged along the axial direction of the axle 13. Even if it does in this way, there exists an effect similar to 1st Embodiment.
  • the protrusion 32 on the outer peripheral surface of the axle 13 is composed of a plurality of, for example, two protrusions 33, and the groove of the clamp tool 25 as shown in FIG. 10. 35 includes a plurality of linear grooves 36 through which the plurality of protrusions 33 can enter and exit. Even if it does in this way, there exists an effect similar to 1st Embodiment.
  • the fourth embodiment is a modification of the third embodiment. As shown in FIG. 12, the plurality of protrusions 33 are respectively formed from a plurality of circular protrusions 41 arranged along the axial direction of the axle 13. Composed.
  • the fifth embodiment is a modification of the first embodiment.
  • the projection 32 on the outer peripheral surface 13 a of the axle 13 and both sides of the groove 35 of the clamp tool 25 are clamped.
  • the taper is formed so that the two approach each other.
  • the protrusions 33 of the axle 13 are formed in a tapered shape whose both side surfaces are inclined surfaces 34 that gradually expand from the end of the axle 13 toward the back, and the linear groove 36 also corresponds to the tapered shape.
  • the groove 13 is formed in a tapered shape with an inclined surface 37 in which the groove width gradually increases from the end of the axle 13 toward the back.
  • both sides of the projecting portion 32 and the groove portion 35 are tapered, the projecting portion 32 and the groove portion 35 are easily fitted even when the positions of the projecting portion 32 and the groove portion 35 are slightly shifted when the clamp tool 25 is inserted.
  • the straightening direction is gradually adjusted, so that there is an advantage that the clamping tool can be correctly inserted.
  • the sixth embodiment is a modification of the third embodiment.
  • the sixth embodiment includes a protrusion 32 constituted by a plurality of protrusions 33 and a groove 35 constituted by a plurality of linear grooves 36.
  • the guide structure 30 is configured by applying the tapered shape mentioned in the fifth embodiment.
  • the seventh embodiment is a modification of the fourth embodiment. As shown in FIG. 17, the outer shapes of the two rows of protrusions 41 arranged along the axial direction are sequentially made different from each other. This is configured to obtain the same operational effects as those of the tapered shape of the embodiment and the sixth embodiment.
  • the eighth embodiment is a modification of the first embodiment, and as shown in FIGS. 18 and 19, contrary to the first embodiment, a linear groove 45 is provided on the outer peripheral surface 13 a of the axle 13,
  • the guide structure 30 is configured by providing a linear protrusion 47 on the inner surface 25 a of the clamp tool 25. Even if it does in this way, there exists an effect similar to 1st Embodiment.
  • the straight grooves 45 and the protrusions 47 of the present embodiment are tapered on both side surfaces as in the fifth embodiment, the clamping tool 25 can be inserted easily and correctly.
  • the ninth embodiment is a modification of the eighth embodiment, and a plurality of circular protrusions 49 are arranged in the insertion direction instead of the protrusion 47 as shown in FIG. It is made to be done.
  • the external shapes of the plurality of protrusions 49 arranged in the axial direction are sequentially changed, and the clamping tool 25 can be inserted easily and correctly as in the fifth embodiment. it can.
  • the tenth embodiment is a modification of the eighth embodiment and the ninth embodiment, and as shown in FIGS. 21 and 22, a plurality of circular protrusions 49 and linear grooves 45 are arranged in a plurality of rows, or protrusions
  • the protrusion 32 and the groove 35 are configured so that the outer shape and the groove width of 49 are sequentially changed to obtain the same effect as the tapered shape of the fifth embodiment and the sixth embodiment.
  • the eleventh embodiment is a modification of the tenth embodiment, and as shown in FIG. 23, the protrusions 32 are configured not by a plurality of protrusions but by a plurality of protrusions 48 extending in the insertion direction. It is a thing. Also in this case, the protrusions 48 are each formed in a tapered shape.
  • the twelfth embodiment is not a structure in which the direction of the clamp tool is regulated by using the projections and the grooves described in the first to eleventh embodiments, but the direction of the clamp tool 25 as shown in FIG.
  • the guide structure 30 is configured to be controlled from both sides intersecting the insertion direction of the clamp tool 25.
  • a pair of guide strips 50 extending along the axial direction of the axle 13 are provided at positions on both sides of the outer peripheral surface of the axle 13 that intersect with the insertion direction of the clamp 25, thereby providing a guide structure.
  • Part 30 is configured.
  • the inner surface of each guide strip 50 can be used as a guide, and the clamp tool 25 can be inserted straight into the gap ⁇ .
  • a simple structure is sufficient.
  • the inner surfaces 50a facing each other of the pair of guide strips 50 are formed in a taper shape that allows the clamp tool 25 to be easily inserted, here, a taper shape that expands toward the inlet side, so that the clamp tool 25 can be easily and correctly inserted. be able to.
  • FIGS. 8 to 24 the same parts as those of the first embodiment described above are denoted by the same reference numerals, and the description thereof is omitted.
  • the present invention is not limited to the above-described embodiment, and various modifications may be made without departing from the spirit of the present invention.
  • the present invention is applied to a structure in which a rim is fixed to an axle and then a tire is assembled.
  • the present invention is not limited to this, and the present invention is also applied to a structure in which a rim on which a tire is assembled in advance is fixed to an axle. It goes without saying that the invention may be applied.

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Abstract

　This rim-securing structure for a transport vehicle is a structure in which a clamp tool (25) is inserted from an end side of an axle (13) into an annular gap (δ) between an outer peripheral surface (13a) of the axle (13) and an inner peripheral surface (19d) of a rim (19x) while an inner surface (25a) is superimposed on the outer peripheral surface (13a) of the axle (13) from multiple locations, and a tapered surface (27) of the clamp tool (25) is pressed against a tapered surface of the rim (19x) to secure the rim (19x) to the axle (13). Of the outer peripheral surface (13a) of the axle (13) and the inner surface (25a) of the clamp tool (25), at least the outer peripheral surface (13a) is provided with a guiding structural part (30) for guiding the orientation of the clamp tool (25) inserted into the annular gap (δ) to a prescribed orientation.

Description

運搬車両のリム固定構造Transportation vehicle rim fixing structure
　本発明は、運搬車両のリム固定構造に係り、詳しくはくさび形のクランプ具を用いて、リムを車軸に固定するリム固定構造に関する。 The present invention relates to a rim fixing structure for a transport vehicle, and more particularly to a rim fixing structure for fixing a rim to an axle using a wedge-shaped clamp.
　高積載能力の運搬車両、例えば採掘した鉱山の砕石物を運搬するダンプトラックでは、積載荷重に耐え得る大径の後輪が用いられる。このためダンプトラックでは、フレームの車幅方向両側に、モータの出力で回転駆動される大径の車軸が配置される。そして、車軸に後輪を装着することが行われている。後輪では、車軸の外周面に環状のリムを嵌め、同リムを車軸に固定してから、ゴム製のタイヤをリムに組み付けたり、予めタイヤが組み付けてあるリムを車軸に固定したりすることが一般的に行われている。 運 搬 High-capacity transport vehicles, such as dump trucks that transport mined crushed stone, use large-diameter rear wheels that can withstand the load. For this reason, in the dump truck, large-diameter axles that are driven to rotate by the output of the motor are arranged on both sides of the frame in the vehicle width direction. Then, rear wheels are mounted on the axle. At the rear wheel, an annular rim is fitted to the outer peripheral surface of the axle, and the rim is fixed to the axle, and then a rubber tire is assembled to the rim, or a rim on which the tire has been assembled is fixed to the axle. Is generally done.
　特に高荷重を負荷されるリムの固定に関しては、特許文献１に開示されているようにダガークランプと呼ばれる帯形部材で形成されたクランプ具を用いて固定する構造が多用されている。
　具体的にはリムの固定は、リムの内周面にテーパ面を形成しておき、同リムを、リム配置面をなす車軸の外周面に嵌め、この状態で車軸の端側から、クランプ具を車軸の外周面とリムの内周面間の環状の隙間に差込むことにより行われる。 In particular, for fixing a rim that is loaded with a high load, as disclosed in Patent Document 1, a structure that uses a clamp formed of a band-shaped member called a dagger clamp is frequently used.
Specifically, the rim is fixed by forming a tapered surface on the inner peripheral surface of the rim, and fitting the rim to the outer peripheral surface of the axle that forms the rim arrangement surface. Is inserted into an annular gap between the outer peripheral surface of the axle and the inner peripheral surface of the rim.
　詳しくはクランプ具は、内側に車軸の外周面にならう内面を有し、外側にテーパ面の形成された外面を有して帯板形に構成される。そして、人手作業で、車軸の外周面とリムの内周面間の環状の隙間の複数個所へ、車軸の外周面と重ね合わせながらクランプ具を差込む。この差込みにより、クランプ具のテーパ面は、リムのテーパ面と押し当たり、くさびのもたらす押し付け力により、リムが車軸に固定される。 Specifically, the clamp device has an inner surface that follows the outer peripheral surface of the axle on the inner side, and has an outer surface with a tapered surface on the outer side, and is configured in a strip shape. Then, the clamping tool is manually inserted into a plurality of annular gaps between the outer peripheral surface of the axle and the inner peripheral surface of the rim while overlapping the outer peripheral surface of the axle. By this insertion, the taper surface of the clamp tool comes into contact with the taper surface of the rim, and the rim is fixed to the axle by the pressing force provided by the wedge.
特開２０１０－　７６７４９号公報JP 2010-76749 A
　クランプ具は、高荷重負担に耐え得る固定強度が要求される。このため、クランプ具は、高重量を有している。例えば単品のクランプ具だけで、５０ｋｇ程度を有する。このためクランプ具の取扱い性は悪い。リムの固定は、こうしたクランプ具を、人手作業で、車軸の周りから複数個、差込んで行われる。 ¡Clamping tools are required to have a fixed strength that can withstand high load. For this reason, the clamp tool has a high weight. For example, it has about 50 kg with only a single clamp. For this reason, the handleability of the clamp is poor. The rim is fixed by manually inserting a plurality of such clamps from around the axle.
　ところが、クランプ具は、取扱い性の悪さから、車軸とリムとの間の隙間へクランプ具を差込む際、思わぬ方向へ差込まれやすい。すなわち、車軸の軸心方向に沿って真っ直ぐ差込むはずが、斜めに逸れて差込まれやすい。特にクランプ具を、車軸の軸心を挟んだ車両前後方向の部位へ差込む場合、作業者は無理な作業姿勢が強いられるため、クランプ具を車軸の軸心方向へ真っ直ぐ差込むことは難しい。 However, the clamp tool tends to be inserted in an unexpected direction when the clamp tool is inserted into the gap between the axle and the rim due to poor handling. In other words, it should be inserted straight along the axial direction of the axle, but it is likely to be inserted obliquely. In particular, when inserting the clamp tool into the vehicle longitudinal direction with the axle center of the axle in between, the operator is forced into an unreasonable working posture, so it is difficult to insert the clamp tool straight into the axle axis direction.
　リムを所期に車軸に固定するためには、リムのテーパ面に対し、クランプ具のテーパ面が均等に当たることが求められるが、上記のようにクランプ具が傾いて差込まれると、リムのテーパ面にクランプ具のテーパ面が片当たりしやすい。このため、リムは、所期の固定力を確保できない。特にダブルタイヤで構成される後輪は、車軸の端側から差込まれるクランプ具により、車軸の外周面上のインナ側のリムとアウタ側のリムとを一緒に固定しているため、クランプ具が傾いていると、インナ側、アウタ側の双方のリムの固定に影響を与えてしまう。 In order to fix the rim to the axle as expected, it is required that the taper surface of the clamp tool abuts against the taper surface of the rim, but if the clamp tool is tilted and inserted as described above, The taper surface of the clamp tool tends to come into contact with the taper surface. For this reason, the rim cannot secure the desired fixing force. In particular, the rear wheel made up of double tires has the inner rim and outer rim on the outer peripheral surface of the axle fixed together by a clamp inserted from the end of the axle. If it is tilted, it will affect the fixing of the rim on both the inner side and the outer side.
　そのため、クランプ具の差込作業は、熟練の作業者が、バールなどを用いて、クランプ具の差込方向を修正しながら差込作業を行っている実情にあり、面倒な作業が強いられている。
　そこで、本発明の目的は、車軸とリムとの隙間から、容易にクランプ具が車軸の軸心方向へ真っ直ぐに差込めるようにした運搬車両のリム固定構造を提供することにある。 For this reason, the insertion work of the clamp tool is a situation where a skilled worker is performing the insertion work while correcting the insertion direction of the clamp tool using a bar or the like, which is troublesome. Yes.
Accordingly, an object of the present invention is to provide a rim fixing structure for a transport vehicle in which a clamp tool can be easily inserted straight into the axial center direction of the axle from the gap between the axle and the rim.
　本発明は、車両の車幅方向側部に配置された、リム取付面をなす外周面を有する車軸と、一方の端側に径方向で前記車軸に向け傾斜するテーパ面をもつ内周面を有し、前記内周面を前記車軸の外周面に嵌めて該車軸の周りに配置された環状のリムと、前記車軸の外周面と重なる内面と、テーパ面を一端に有した外面とを有し、前記車軸の外周面と前記リムの内周面との環状の隙間に差込み可能なくさび形のクランプ具とを備え、前記車軸の端側から、前記車軸の外周面と前記リムの内周面との環状の隙間へ、複数個所から、前記クランプ具を前記車軸の外周面に前記内面を重ね合わせながら差込むことにより、前記クランプ具のテーパ面を前記リムのテーパ面に押し当て、前記リムを前記車軸に固定する運搬車両のリム固定構造であって、前記車軸の外周面及び前記クランプ具の内面のうち少なくとも前記車軸の外周面には、前記環状の隙間へ差込まれる前記クランプ具の向きを所定の向きに案内する案内構造部が設けられることとした（請求項１）。 The present invention includes an axle having an outer peripheral surface that forms a rim mounting surface, disposed on a side in a vehicle width direction of a vehicle, and an inner peripheral surface having a tapered surface that is inclined toward the axle in a radial direction on one end side. An annular rim disposed around the axle by fitting the inner circumference to the outer circumference of the axle, an inner surface overlapping the outer circumference of the axle, and an outer surface having a tapered surface at one end. A wedge-shaped clamp that can be inserted into an annular gap between the outer peripheral surface of the axle and the inner peripheral surface of the rim, and from the end side of the axle, the outer peripheral surface of the axle and the inner periphery of the rim. The clamp tool is pressed against the taper surface of the rim by inserting the clamp tool into the annular gap with the surface from a plurality of locations while superimposing the inner surface on the outer peripheral surface of the axle. A rim fixing structure for a transport vehicle for fixing a rim to the axle, Of the outer peripheral surface of the axle and the inner surface of the clamp, at least the outer peripheral surface of the axle is provided with a guide structure for guiding the direction of the clamp inserted into the annular gap in a predetermined direction. (Claim 1).
　好ましくは、前記案内構造部は、前記車軸の軸心方向に沿って前記車軸の外周面に設けられた突起部と、前記クランプ具の差込み方向に沿って前記クランプ具の内面に設けられた前記突起部が出入り可能な溝部とを有して構成されることとした（請求項２）。 Preferably, the guide structure portion is provided on the outer peripheral surface of the axle along the axial direction of the axle, and on the inner surface of the clamp tool along the insertion direction of the clamp tool. The projecting portion is configured to have a groove portion that can enter and exit (claim 2).
　好ましくは、前記案内構造部は、前記車軸の軸心方向に沿って前記車軸の外周面に設けられた溝部と、前記クランプ具の差込み方向に沿って前記クランプ具の内面に設けられた前記溝部内に出入り可能な突起部とを有して構成されることとした（請求項３）。 Preferably, the guide structure portion includes a groove portion provided on the outer peripheral surface of the axle along the axial center direction of the axle, and the groove portion provided on the inner surface of the clamp tool along the insertion direction of the clamp tool. And a protrusion that can enter and exit.
　好ましくは、前記案内構造部は、前記クランプ具の差込み方向と交差する前記クランプ具の両側に位置して前記外周面に設けられ、前記差込まれるクランプ具を両側方向から規制する一対の案内条を有して構成されることとした（請求項４）。
　好ましくは、前記突起部と前記溝部は、各両側が前記クランプ具の差込みが進むにしたがい次第に接近するテーパ形に形成されてなることとした（請求項５）。 Preferably, the guide structure portion is provided on the outer peripheral surface, located on both sides of the clamp tool intersecting the insertion direction of the clamp tool, and a pair of guide strips for restricting the inserted clamp tool from both sides. (Claim 4).
Preferably, the projecting portion and the groove portion are formed in a tapered shape in which both sides gradually approach as the insertion of the clamp device proceeds (Claim 5).
　本発明によれば、案内構造部から、車軸とリムとの隙間へクランプ具を差込むことにより、クランプ具は、案内構造部で案内されながら奥まで差込まれる。これにより、取扱いが難しいクランプ具は、案内構造部の案内により、所定の向きで、すなわち傾かずに車軸の軸心方向へ真っ直ぐに差込まれる。 According to the present invention, by inserting the clamp tool into the gap between the axle and the rim from the guide structure portion, the clamp tool is inserted to the back while being guided by the guide structure portion. As a result, the clamp tool that is difficult to handle is inserted straight in the axial direction of the axle in a predetermined direction, that is, without tilting, by the guidance of the guide structure.
　したがって、熟練者による面倒な修正作業を必要とせずに、容易にクランプ具を真っ直ぐに差込むことができる。この結果、リムのテーパ面に対するクランプ具のテーパ面の片当たりを防ぎ、安定した固定強度を確保することができる（請求項１）。 Therefore, it is possible to easily insert the clamp tool straight without requiring troublesome correction work by a skilled person. As a result, it is possible to prevent the taper surface of the clamp tool from coming into contact with the taper surface of the rim and to secure a stable fixing strength (claim 1).
　特に案内構造部を、溝部と突起部とを組み合わせた構造にしたり、クランプ具を両側から一対の案内条で案内したりする構造にすることで、案内構造部を簡単な構造で実現することができる（請求項２～請求項４）。
　また、溝部と突起部の各両側をクランプ具の差込みが進むにしたがい次第に接近するテーパ形にすることにより、クランプ具を差込む際、溝部と突起部とが多少ずれていたとしても、嵌りやすくできると共に、差込みが進むにつれてクランプ具は次第に所期の向きに直されるので、正しくクランプ具を差込むことができる（請求項５、６）。 In particular, the guide structure can be realized with a simple structure by making the structure of the guide structure a combination of a groove and a protrusion, or by guiding the clamp tool with a pair of guide strips from both sides. (Claims 2 to 4).
In addition, by making the both sides of the groove part and the projecting part tapered so that the insertion of the clamp tool gradually proceeds, even if the groove part and the projecting part are slightly shifted when inserting the clamp tool, it is easy to fit. In addition, as the insertion proceeds, the clamping tool is gradually corrected to the intended direction, so that the clamping tool can be correctly inserted (claims 5 and 6).
本発明の第１の実施形態に係る運搬車両の外観を示す斜視図。The perspective view which shows the external appearance of the transport vehicle which concerns on the 1st Embodiment of this invention. 同運搬車両の後輪を固定する構造を示す断面図。Sectional drawing which shows the structure which fixes the rear wheel of the transport vehicle. 同構造の主要部を分解した分解斜視図。The disassembled perspective view which decomposed | disassembled the principal part of the structure. 図２中のＡ部で示す、クランプ具でリムを車軸に固定する構造の斜視図。The perspective view of the structure which fixes a rim | limb to an axle shaft with the clamp tool shown by the A section in FIG. 同クランプ具を案内する案内構造部を構成する車軸外周面の突起部を示す斜視図。The perspective view which shows the projection part of the axle outer peripheral surface which comprises the guide structure part which guides the clamp tool. 同じくクランプ具の内面の溝部を示す斜視図。The perspective view which similarly shows the groove part of the inner surface of a clamp tool. クランプ具を車軸の外周面とリムの内周面との間へ差込むときを説明する断面図。Sectional drawing explaining the time of inserting a clamp tool between the outer peripheral surface of an axle shaft, and the inner peripheral surface of a rim | limb. 本発明の第２の実施形態の要部となるリム固定構造を示す断面図。Sectional drawing which shows the rim fixing structure used as the principal part of the 2nd Embodiment of this invention. 同リム固定構造の要部となる車軸の外周面の突起部を示す斜視図。The perspective view which shows the protrusion part of the outer peripheral surface of the axle shaft used as the principal part of the rim fixing structure. 本発明の第３の実施形態の要部となるクランプ具内面の溝部を示す斜視図。The perspective view which shows the groove part of the clamp tool inner surface used as the principal part of the 3rd Embodiment of this invention. 同じく同溝部と対となる車軸の外周面の突起部を示す斜視図。The perspective view which similarly shows the projection part of the outer peripheral surface of the axle shaft which makes a pair with the groove part. 本発明の第４の実施形態の要部となる異なる車軸の外周面の突起部を示す斜視図。The perspective view which shows the projection part of the outer peripheral surface of a different axle shaft used as the principal part of the 4th Embodiment of this invention. 本発明の第５の実施形態の要部となる車軸の外周面の突起部を示す斜視図。The perspective view which shows the protrusion part of the outer peripheral surface of the axle shaft used as the principal part of the 5th Embodiment of this invention. 同突起部と対となるクランプ具内面の溝部を示す斜視図。The perspective view which shows the groove part of the clamp tool inner surface used as a pair with the projection part. 本発明の第６の実施形態の要部となる車軸の外周面の突起部を示す斜視図。The perspective view which shows the protrusion part of the outer peripheral surface of the axle shaft used as the principal part of the 6th Embodiment of this invention. 同突起部と対となるクランプ具内面の溝部を示す斜視図。The perspective view which shows the groove part of the clamp tool inner surface used as a pair with the projection part. 本発明の第７の実施形態の要部となる異なる車軸の外周面の突起部を示す斜視図。The perspective view which shows the projection part of the outer peripheral surface of a different axle shaft used as the principal part of the 7th Embodiment of this invention. 本発明の第８の実施形態の要部となる車軸の外周面の溝部を示す斜視図。The perspective view which shows the groove part of the outer peripheral surface of the axle shaft used as the principal part of the 8th Embodiment of this invention. 同溝部と対となるクランプ具内面の突起部を示す斜視図。The perspective view which shows the protrusion part of the clamp tool inner surface used as a pair with the said groove part. 本発明の第９の実施形態の要部となる異なるクランプ具内面の突起部を示す斜視図。The perspective view which shows the protrusion part of a different clamp tool inner surface used as the principal part of the 9th Embodiment of this invention. 本発明の第１０の実施形態の要部となる車軸の外周面の溝部を示す斜視図。The perspective view which shows the groove part of the outer peripheral surface of the axle shaft used as the principal part of the 10th Embodiment of this invention. 同溝部と対となるクランプ具内面の突起部を示す斜視図。The perspective view which shows the protrusion part of the clamp tool inner surface used as a pair with the said groove part. 本発明の第１１の実施形態の要部となる異なるクランプ具内面の突起部を示す斜視図。The perspective view which shows the protrusion part of a different clamp tool inner surface used as the principal part of the 11th Embodiment of this invention. 本発明の第１２の実施形態の要部となる車軸の外周面に設けた一対の案内条でクランプ具を案内する構造を示す斜視図。The perspective view which shows the structure which guides a clamp tool with a pair of guide strip provided in the outer peripheral surface of the axle shaft used as the principal part of the 12th Embodiment of this invention.
　以下、本発明を図１から図７に示す第１の実施形態にもとづいて説明する。
　図１には本発明を適用した運搬車両、例えばダンプトラックの外観が示されている。ちなみに図１中の矢印Ｆは、同ダンプトラックの前側を示し、矢印Ｒは同ダンプトラックの後側を示している。 Hereinafter, the present invention will be described based on a first embodiment shown in FIGS.
FIG. 1 shows the appearance of a transport vehicle to which the present invention is applied, for example, a dump truck. Incidentally, the arrow F in FIG. 1 indicates the front side of the dump truck, and the arrow R indicates the rear side of the dump truck.
　ダンプトラックの主な構造を説明すると、図中符号１は、同ダンプトラックの車体を構成する車両前後方向に延びるフレーム、符号２は同フレーム１の前部両側に設けられた前輪、符号３はフレーム１の後部両側に設けられた後輪をそれぞれ示している。 The main structure of the dump truck will be described. In the figure, reference numeral 1 denotes a frame extending in the longitudinal direction of the vehicle constituting the body of the dump truck, reference numeral 2 denotes front wheels provided on both sides of the front portion of the frame 1, and reference numeral 3 denotes The rear wheels provided on both sides of the rear portion of the frame 1 are shown.
　さらに図中符号５は、フレーム１の中央～後上部に設けたベッセル、符号６はフレーム１の前上部に設けられたフロントデッキ、符号７はフロントデッキ６の車幅方向片側に設けられたキャビン、符号８はキャビン７と隣接してフロントデッキ６に設けられたキャビネットをそれぞれ示している。 Further, in the figure, reference numeral 5 is a vessel provided in the center to the rear upper part of the frame 1, reference numeral 6 is a front deck provided in the front upper part of the frame 1, and reference numeral 7 is a cabin provided on one side of the front deck 6 in the vehicle width direction. Reference numeral 8 denotes a cabinet provided on the front deck 6 adjacent to the cabin 7.
　フロントデッキ６の直下には、図示はしないが発電用エンジン、オルタネータが設けられる。フレーム１の後部には、上記オルタネータを電力源として後輪３を回転駆動させる電動式アクスルユニット１０が設けられている。図２には、この電動式アクスルユニット１０の片側の一部の断面が示されている。 Although not shown, a power generation engine and an alternator are provided immediately below the front deck 6. An electric axle unit 10 is provided at the rear portion of the frame 1 to rotate the rear wheel 3 using the alternator as a power source. FIG. 2 shows a partial cross section of one side of the electric axle unit 10.
　電動式アクスルユニット１０は、図２に示されるように車幅方向に延びる筒形のアクスルケース１１と、同アクスルケース１１の左右両側部に収めた一対の電動モータ１２と、アクスルケース１１の端部に配置された筒形の車軸１３を有して構成されている。そして、各電動モータ１２の出力軸１２ａが、車軸１３の先端部に組み付けた減速ユニット１４を介して、車軸１３に接続されている。減速ユニット１４は、遊星ギヤ式の減速機構１４ｂを内蔵して構成されている。これにより、車幅方向両側に配置された各車軸１３は、左右の各電動モータ１２により、独立して回転駆動される。これら左右の各車軸１３に、ダブルタイヤで構成される後輪３が装着されている。 As shown in FIG. 2, the electric axle unit 10 includes a cylindrical axle case 11 extending in the vehicle width direction, a pair of electric motors 12 housed on both left and right sides of the axle case 11, and ends of the axle case 11. It has the cylindrical axle 13 arrange | positioned at the part. And the output shaft 12a of each electric motor 12 is connected to the axle 13 via the speed reduction unit 14 assembled at the tip of the axle 13. The speed reduction unit 14 includes a planetary gear type speed reduction mechanism 14b. As a result, the axles 13 arranged on both sides in the vehicle width direction are independently driven to rotate by the left and right electric motors 12. A rear wheel 3 composed of a double tire is mounted on each of the left and right axles 13.
　図３には、この車軸１３の周辺の主な構造が分解図で示されている。
　図２および図３を参照して車軸１３に後輪３を組み付ける構造を説明すると、車軸１３側では、つぎのような構造が用いられている。
　車軸１３の外周面１３ａは、環状のリム取付面をなす。このリム取付面のうち、車幅方向内側に位置する端部の外周縁部には、環状の受け突起１５が設けられている。環状の受け突起１５の車幅方向外側の側部には、テーパ面１５ａが形成されている。また車軸１３の車幅方向外側に位置する端面の中央には、上記減速ユニット１４の筒形のケーシング１４ａが組み付けられている。 FIG. 3 is an exploded view showing the main structure around the axle 13.
The structure for assembling the rear wheel 3 to the axle 13 will be described with reference to FIGS. 2 and 3. The following structure is used on the axle 13 side.
The outer peripheral surface 13a of the axle 13 forms an annular rim mounting surface. An annular receiving projection 15 is provided on the outer peripheral edge of the end located on the inner side in the vehicle width direction of the rim mounting surface. A tapered surface 15 a is formed on the outer side of the annular receiving projection 15 in the vehicle width direction. A cylindrical casing 14a of the speed reduction unit 14 is assembled at the center of the end surface located on the outer side in the vehicle width direction of the axle 13.
　ケーシング１４ａは、車軸１３の外径よりも小さい外径で形成され、段差形となった車軸１３の外周端を外部に露出させている。この露出した環状の端面には、例えば二本を一組として、複数本のスタッドボルト１５ｘが周方向に順に配設されている。 The casing 14a is formed with an outer diameter smaller than the outer diameter of the axle 13, and the outer peripheral end of the axle 13 having a stepped shape is exposed to the outside. A plurality of stud bolts 15x are sequentially arranged in the circumferential direction on the exposed annular end face, for example, with two as a set.
　後輪３としては、図２および図３にも示されるように車幅方向内側と車幅方向外側に、ゴム製の走行タイヤ１６を二本、並行に配置したダブルタイヤが用いられている。車幅方向内側に配置されるインナ側の後輪１７、車幅方向外側に配置されるアウタ側の後輪１８は、いずれも環状のリム１９とこのリム１９の外周部に装着される環状の走行タイヤ１６とから構成される。 As the rear wheel 3, as shown in FIGS. 2 and 3, a double tire in which two rubber running tires 16 are arranged in parallel on the inner side in the vehicle width direction and the outer side in the vehicle width direction is used. An inner side rear wheel 17 disposed on the inner side in the vehicle width direction and an outer side rear wheel 18 disposed on the outer side in the vehicle width direction are both an annular rim 19 and an annular rim 19 attached to the outer periphery of the rim 19. And a traveling tire 16.
　具体的にはリム１９は、車軸１３の外周面に嵌る内周面１９ｄをもつ環状のリムベース１９ａと、このリムベース１９ａの両端部に組み付く一対のリムサイド１９ｂとを有して構成される。リムベース１９ａの内周面１９ｄの一方の端側には、図７にも示されるように径方向で車軸１３に向け傾斜するテーパ面２０が形成されている。 More specifically, the rim 19 includes an annular rim base 19a having an inner peripheral surface 19d that fits on the outer peripheral surface of the axle 13, and a pair of rim sides 19b that are assembled to both ends of the rim base 19a. On one end side of the inner peripheral surface 19d of the rim base 19a, a tapered surface 20 that is inclined toward the axle 13 in the radial direction is formed as shown in FIG.
　テーパ面２０は、上記受け突起１５のテーパ面１５ａと向き合う斜面で形成される。このテーパ面２０を境に、内周面１９ｄの一方側の内周面は、車軸１３の外径と同等の径とされ、他方側の内周面は、それより若干、大きな径とされている。 The tapered surface 20 is formed by a slope facing the tapered surface 15a of the receiving projection 15. With this taper surface 20 as a boundary, the inner peripheral surface on one side of the inner peripheral surface 19d has a diameter equivalent to the outer diameter of the axle 13, and the inner peripheral surface on the other side has a slightly larger diameter. Yes.
　そして、この同一のリム１９が車両幅方向内側と外側とで共用されている。すなわち、車幅方向外側に配置されるリム１９ｘは、テーパ面２０を車幅方向内側に配置した姿勢で用いられる。車幅方向内側に配置されるリム１９ｙは、反対にテーパ面２０を車幅方向外側に配置した姿勢で用いられている。 The same rim 19 is shared by the vehicle width direction inside and outside. That is, the rim 19x disposed on the outer side in the vehicle width direction is used in a posture in which the tapered surface 20 is disposed on the inner side in the vehicle width direction. On the other hand, the rim 19y disposed on the inner side in the vehicle width direction is used in a posture in which the tapered surface 20 is disposed on the outer side in the vehicle width direction.
　これらインナ側とアウタ側のリム１９ｘ、１９ｙが、車軸１３の外周面１３ａに嵌挿される。すなわち、図２、図３および図７に示されるように車軸１３の端側から、車軸１３の外周面１３ａへ、リム１９ｙ、リム間を所定に保つ環状のスペーサ部材２３、リム１９ｘが順に嵌挿される。この嵌挿により、リム１９ｙは、テーパ面２０がテーパ面１５ａに突き当たり、リム１９ｙの大部分が車軸１３端から突き出す。スペーサ部材２３と突き当たるリム１９ｘは、同様に、大部分が反対側の車軸１３端から突き出す。 These inner side and outer side rims 19x, 19y are fitted into the outer peripheral surface 13a of the axle 13. That is, as shown in FIGS. 2, 3, and 7, the rim 19 y and the annular spacer member 23 that keeps a predetermined distance between the rim and the rim 19 x are sequentially fitted from the end side of the axle 13 to the outer peripheral surface 13 a of the axle 13. Inserted. As a result of this insertion, the tapered surface 20 of the rim 19y hits the tapered surface 15a, and most of the rim 19y protrudes from the end of the axle 13. Similarly, most of the rim 19x that abuts against the spacer member 23 projects from the end of the opposite axle 13.
　各リム１９ｘ、１９ｙは、図７に示されるように例えばダガークランプと呼ばれる複数のクランプ具２５を用いたリム固定構造にて固定される。クランプ具２５は、車軸１３の端側から、車軸１３の外周面１３ａとリム１９ｘの内周面１９ｄとの間に形成される環状の隙間δの複数個所へ差込んで、リム１９ｘ、１９ｙを車軸１３に固定する部材である。 Each rim 19x, 19y is fixed by a rim fixing structure using a plurality of clamps 25 called a dagger clamp, for example, as shown in FIG. The clamp tool 25 is inserted from the end side of the axle 13 into a plurality of locations of an annular gap δ formed between the outer peripheral surface 13a of the axle 13 and the inner peripheral surface 19d of the rim 19x, and the rims 19x and 19y are inserted. A member fixed to the axle 13.
　クランプ具２５には、高負荷に耐える例えば鋼部材などの帯板形部材が用いられる。具体的には、クランプ具２５は、図２～図４および図７に示されるような車軸１３の外周面１３ａとリム１９ｘの内周面１９ｄ間の隙間δに差込み可能な厚み寸法を有する帯板形のクランプ部材から構成される。そして、クランプ具２５は、先端部が差込み端をなし、Ｌ字形に折れ曲がった基端部が固定座２６をなす。クランプ具２５の幅方向の形状は、車軸１３の外周面１３ａにならう弧形に曲成されていて、弧の内側に位置する内面２５ａを、車軸１３の外周面１３ａと重なり合う面とし、反対の弧の外側に位置する外面２５ｂを、リム１９ｘの内周面１９ｄと向き合う面としている。 For the clamp tool 25, a strip-shaped member such as a steel member that can withstand a high load is used. Specifically, the clamp tool 25 has a thickness dimension that can be inserted into the gap δ between the outer peripheral surface 13a of the axle 13 and the inner peripheral surface 19d of the rim 19x as shown in FIGS. 2 to 4 and 7. It consists of a plate-shaped clamp member. And as for the clamp tool 25, the front-end | tip part comprises an insertion end, and the base end part bent in the L-shape forms the fixed seat 26. The shape in the width direction of the clamp tool 25 is curved in an arc shape that follows the outer peripheral surface 13a of the axle 13. The inner surface 25a located inside the arc is a surface that overlaps with the outer peripheral surface 13a of the axle 13, and is opposite. The outer surface 25b located outside the arc is a surface facing the inner peripheral surface 19d of the rim 19x.
　また図２～図４および図７に示されるように、クランプ具２５はくさび形をなし、外面２５ｂの先端部全体には、テーパ面２７が形成されている。テーパ面２７は、内面２５ａ端と鋭角的に交わる斜面で構成される。このテーパ面２７が、例えばリム１９ｘのテーパ面２０と向き合う。つまり、幅方向に弧形を描くテーパ面２７は、リム１９ｘの環形のテーパ面２０に対して向き合う部分となる。またクランプ部材のＬ形に折れ曲がった固定座２６には、車軸１３のスタッドボルト１５ｘのうち、一組のスタッドボルト１５ｘが挿入可能な一組の通孔２６ａが設けられている。これらテーパ面２７と通孔２６ａとを用いて、リム１９ｘ、１９ｙの固定が行われる。 As shown in FIGS. 2 to 4 and 7, the clamp tool 25 has a wedge shape, and a tapered surface 27 is formed on the entire tip of the outer surface 25b. The taper surface 27 is composed of an inclined surface that intersects the inner surface 25a end at an acute angle. The tapered surface 27 faces the tapered surface 20 of the rim 19x, for example. That is, the taper surface 27 that draws an arc shape in the width direction is a portion that faces the ring-shaped taper surface 20 of the rim 19x. The fixed seat 26 bent into an L shape of the clamp member is provided with a set of through holes 26a into which a set of stud bolts 15x of the stud bolts 15x of the axle 13 can be inserted. The rims 19x and 19y are fixed using the tapered surface 27 and the through hole 26a.
　すなわち、クランプ具２５は、人手作業により、一組のスタッドボルト１５ｘに、一組の通孔２６ａを合わせつつ、先端の内面部分を車軸１３の外周面１３ａと重ね合わせて、先端部から車軸１３の外周面１３ａとリム１９ｘの内周面１９ｄ間の隙間δへ差込まれる。すると、クランプ具２５は、車軸１３の外周面１３ａ，リム１９の内周面１９ｄと摺接しながら、さらに通孔２６ａにスタッドボルト１５ｘが挿入されつつ、隙間δの奥側へ進入する。 That is, the clamp tool 25 is manually aligned with the set of stud bolts 15x and the set of through holes 26a, with the inner surface portion of the tip overlapped with the outer peripheral surface 13a of the axle 13, and from the tip portion to the axle 13 Is inserted into a gap δ between the outer peripheral surface 13a of the rim 19x and the inner peripheral surface 19d of the rim 19x. Then, the clamp tool 25 enters the inner side of the clearance δ while the stud bolt 15x is inserted into the through hole 26a while being in sliding contact with the outer peripheral surface 13a of the axle 13 and the inner peripheral surface 19d of the rim 19.
　この差込作業により、先端のテーパ面２７は、リム１９ｘのテーパ面２０と突き当たる。このとき、リム１９ｘ，１９ｙは、車軸１３の受け突起１５で受け止められているため、テーパ面２０を押すことになる。これにより、テーパ面２０にはテーパ面２０を周囲へ拡げようとする押し付け力が加わる。この差込作業がもたらすテーパ面２０，２７によるくさび効果により、リム１９ｘは、車軸１３の外周面１３ａに固定される。これと共にリム１９ｙにおいてもテーパ面２０がテーパ面１５ａに押し当たり、同様にくさび効果により、リム１９ｙは車軸１３の外周面１３ａに固定される。差込み作業を終えたら、図２および図４に示されるように固定座２６の通孔２６ａを貫通したスタッドボルト１５ｘ端にナット２８を螺合して締付け、クランプ具２５を固定する。 By this insertion work, the tapered surface 27 at the front end abuts against the tapered surface 20 of the rim 19x. At this time, since the rims 19x and 19y are received by the receiving projections 15 of the axle 13, the tapered surfaces 20 are pushed. As a result, a pressing force is applied to the tapered surface 20 to expand the tapered surface 20 to the periphery. The rim 19 x is fixed to the outer peripheral surface 13 a of the axle 13 by the wedge effect by the tapered surfaces 20 and 27 brought about by this insertion work. At the same time, also in the rim 19y, the tapered surface 20 contacts the tapered surface 15a, and the rim 19y is fixed to the outer peripheral surface 13a of the axle 13 by the wedge effect. When the insertion work is finished, as shown in FIGS. 2 and 4, the nut 28 is screwed into the end of the stud bolt 15 x that passes through the through hole 26 a of the fixing seat 26 and tightened to fix the clamp tool 25.
　こうしたクランプ具２５の差込作業が、スタッドボルト１５ｘの組毎に、環状の隙間δの各位置で行われ、リム１９ｘ，１９ｙは、同時に車軸１３に固定される。その後、リム１９ｘ、１９ｙにそれぞれ走行タイヤ１６を組み付ける。ちなみに、走行タイヤ１６は、固定具、ここではくさび部材３１ａやリング部材３１ｂにより、リム１９ｘ、１９ｙに固定される。 Such an insertion operation of the clamp tool 25 is performed at each position of the annular gap δ for each set of the stud bolts 15x, and the rims 19x and 19y are fixed to the axle 13 at the same time. Thereafter, the traveling tires 16 are assembled to the rims 19x and 19y, respectively. Incidentally, the traveling tire 16 is fixed to the rims 19x and 19y by a fixing tool, here, a wedge member 31a and a ring member 31b.
　このとき、クランプ具２５は、高重量物なので、人手では取扱い難い。このため、車軸１３とリム１９ｘとの間の隙間δへクランプ具２５を差込む際、当該クランプ具２５が、真っ直ぐでなく、傾いて思わぬ方向へ差込まれたりしやすい。
　そのため、車軸１３やクランプ具２５には、真っ直ぐ差込めるよう、案内構造部３０が設けられている。図５～図７には、この案内構造部３０の各部の構造が示されている。 At this time, since the clamp tool 25 is a heavy object, it is difficult to handle it manually. For this reason, when the clamp tool 25 is inserted into the gap δ between the axle 13 and the rim 19x, the clamp tool 25 is not straight but is likely to be inclined and inserted in an unexpected direction.
Therefore, the guide structure part 30 is provided in the axle shaft 13 or the clamp tool 25 so that it can be inserted straight. 5 to 7 show the structure of each part of the guide structure 30. FIG.
　案内構造部３０は、例えば車軸１３の外周面１３ａに突起部３２を設け、クランプ具２５の内面２５ａに溝部３５を設けた構造が用いられている。具体的には、例えば図５および図７に示されるように突起部３２としては、アウタ側のリム１９ｘが嵌る車軸１３の外周面１３ａのうち、スタッドボルト組の各位置と対応する各部位に、車軸１３の軸心方向に沿って直線状に延びる突起条３３を設けて構成される。突起条３３は、長手方向と直交する方向の断面が角形をなしている。 The guide structure portion 30 has a structure in which, for example, a protrusion portion 32 is provided on the outer peripheral surface 13a of the axle 13 and a groove portion 35 is provided on the inner surface 25a of the clamp tool 25. Specifically, as shown in FIGS. 5 and 7, for example, as the protrusion 32, the outer peripheral surface 13 a of the axle 13 on which the outer rim 19 x fits is provided at each part corresponding to each position of the stud bolt assembly. In addition, a protrusion 33 extending linearly along the axial direction of the axle 13 is provided. As for the protrusion 33, the cross section of the direction orthogonal to a longitudinal direction has comprised the square shape.
　溝部３５としては、図６および図７に示されるようにクランプ具２５の内面２５ａのうち、例えば幅方向中央の部位に、クランプ具２５の差込み方向に延びる直線溝３６を形成して構成される。直線溝３６は、突起部３２が嵌る溝幅を有している。さらに直線溝３６は、クランプ具２５の先端から突起条３３全体が収まる広範囲の領域に形成されている。これにより、直線溝３６は、クランプ具２５の先端に開口する溝端を出入り口３６ａとして、突起条３３が直線溝３６に出入りできるようにしている。 As shown in FIG. 6 and FIG. 7, the groove portion 35 is configured by forming a linear groove 36 extending in the insertion direction of the clamp tool 25, for example, at a central portion in the width direction of the inner surface 25 a of the clamp tool 25. . The straight groove 36 has a groove width in which the protrusion 32 fits. Further, the straight groove 36 is formed in a wide area where the entire protrusion 33 is accommodated from the tip of the clamp tool 25. Thus, the linear groove 36 allows the protrusion 33 to enter and exit the linear groove 36 with the groove end opening at the tip of the clamp tool 25 as an entrance / exit 36a.
　つまり、クランプ具２５は、対となる外周面１３ａの突起条３３、内面２５ａの直線溝３６をガイドとして、車軸１３とリム１９ｘとの間の隙間δから、車軸１３の軸心方向に真っ直ぐ差込めるように構成されている。ちなみに、クランプ具２５の先端の出入り口３６ａは、突起条３３が進入しやすいよう拡開している。すなわち、出入り口３６ａは、クランプ具２５の先端に向かうにしたがい徐々に円弧状に拡がる拡開部３６ｂで構成されている。 That is, the clamp tool 25 has a straight difference in the axial direction of the axle 13 from the gap δ between the axle 13 and the rim 19x using the protrusions 33 of the outer peripheral surface 13a and the linear groove 36 of the inner surface 25a as a guide. It is configured to be included. Incidentally, the entrance / exit 36a at the tip of the clamp 25 is widened so that the protrusion 33 can easily enter. That is, the entrance / exit 36a is configured by an expanded portion 36b that gradually expands in an arc shape as it goes toward the tip of the clamp tool 25.
　したがって、クランプ具２５で、車軸１３上のインナ側のリム１９ｙ、アウタ側のリム１９ｘを固定するときは、図７に示されるように人手作業により、クランプ具２５を案内構造部３０から差込む。具体的には、クランプ具２５の出入り口３６ａの有る幅方向中央と、一組の通孔２６ａの位置とを目安に、車軸１３の端側から、車軸１３の外周面１３ａとリム１９ｘの内周面１９ｄ間の隙間δへクランプ具２５を差込み、直線溝３６内へ突起条３３が進入するようにする。 Accordingly, when the inner rim 19y and the outer rim 19x on the axle 13 are fixed by the clamp tool 25, the clamp tool 25 is manually inserted from the guide structure 30 as shown in FIG. . Specifically, the outer peripheral surface 13a of the axle 13 and the inner periphery of the rim 19x from the end side of the axle 13 with reference to the center in the width direction where the entrance / exit 36a of the clamp 25 is located and the position of the pair of through holes 26a. The clamp tool 25 is inserted into the gap δ between the surfaces 19 d so that the protrusion 33 enters the linear groove 36.
　すると、差込まれるクランプ具２５は、直線状の突起条３３で案内されながら、隙間δの奥まで、所定の向きで差込まれる。すなわちクランプ具２５は、傾かずに真っ直ぐに差込まれる。これにより、取扱いが難しいクランプ具２５でも、真っ直ぐに差込むことができる。
　それ故、熟練者による面倒な修正作業を必要とせずに、容易にクランプ具２５を車軸１３の外周面１３ａとリム１９ｘの内周面１９ｄ間の隙間δへ真っ直ぐに差込むことができる。 Then, the clamp tool 25 to be inserted is inserted into the gap δ in a predetermined direction while being guided by the linear protrusion 33. That is, the clamp tool 25 is inserted straight without tilting. Thereby, even the clamp tool 25 which is difficult to handle can be inserted straight.
Therefore, the clamp 25 can be easily inserted straight into the gap δ between the outer peripheral surface 13a of the axle 13 and the inner peripheral surface 19d of the rim 19x without requiring a troublesome correction work by a skilled person.
　この結果、リム１９ｘのテーパ面２０に対するクランプ具２５のテーパ面２７の片当たりは解消され、リム１９ｘを安定した固定強度で固定することができる。特にクランプ具２５で、車軸１３上のインナ側のリム１９ｙ、アウタ側のリム１９ｘを一緒に固定する場合には、面倒な作業が極力抑えられることになり、有効である。
　しかも、案内構造部３０には、突起部３２と溝部３５との組み合わせた構造を用いたので、簡単な構造ですむ。 As a result, the contact of the taper surface 27 of the clamp tool 25 with the taper surface 20 of the rim 19x is eliminated, and the rim 19x can be fixed with a stable fixing strength. In particular, when the inner rim 19y and the outer rim 19x on the axle 13 are fixed together with the clamp 25, troublesome work can be suppressed as much as possible, which is effective.
Moreover, since a structure in which the protrusion 32 and the groove 35 are combined is used for the guide structure 30, a simple structure is sufficient.
　本発明は、上述した第１の実施形態に限定されるものではない。例えば図８および図９に示される第２の実施形態、図１０および図１１に示される第３の実施形態、図１２に示される第４の実施形態、図１３および図１４に示される第５の実施形態、図１５および図１６に示される第６の実施形態、図１７に示される第７の実施形態、図１８および図１９に示される第８の実施形態、図２０に示される第９の実施形態、図２１および図２２に示される第１０の実施形態、図２３に示される第１１の実施形態、図２４に示される第１２の実施形態のようにしてもよい。 The present invention is not limited to the first embodiment described above. For example, the second embodiment shown in FIGS. 8 and 9, the third embodiment shown in FIGS. 10 and 11, the fourth embodiment shown in FIG. 12, and the fifth embodiment shown in FIGS. 13 and 14. , The sixth embodiment shown in FIGS. 15 and 16, the seventh embodiment shown in FIG. 17, the eighth embodiment shown in FIGS. 18 and 19, and the ninth embodiment shown in FIG. , The tenth embodiment shown in FIGS. 21 and 22, the eleventh embodiment shown in FIG. 23, and the twelfth embodiment shown in FIG.
　すなわち、第２の実施形態は、図８および図９に示されるように車軸１３の外周面の突起部３２が、車軸１３の軸心方向に沿って並べた複数の突起４０から構成される。このようにしても第１の実施形態と同様の効果を奏する。 That is, in the second embodiment, as shown in FIG. 8 and FIG. 9, the protrusion 32 on the outer peripheral surface of the axle 13 is composed of a plurality of protrusions 40 arranged along the axial direction of the axle 13. Even if it does in this way, there exists an effect similar to 1st Embodiment.
　第３の実施形態は、図１１に示されるように車軸１３の外周面の突起部３２が、複数、例えば二本の突起条３３から構成され、図１０に示されるようにクランプ具２５の溝部３５が、複数の突起条３３が出入り可能な複数の直線溝３６から構成される。このようにしても第１の実施形態と同様の効果を奏する。
　第４の実施形態は、第３の実施形態の変形例で、図１２に示されるように複数の突起条３３が、それぞれ車軸１３の軸心方向に沿って並べた複数の円形な突起４１から構成される。 In the third embodiment, as shown in FIG. 11, the protrusion 32 on the outer peripheral surface of the axle 13 is composed of a plurality of, for example, two protrusions 33, and the groove of the clamp tool 25 as shown in FIG. 10. 35 includes a plurality of linear grooves 36 through which the plurality of protrusions 33 can enter and exit. Even if it does in this way, there exists an effect similar to 1st Embodiment.
The fourth embodiment is a modification of the third embodiment. As shown in FIG. 12, the plurality of protrusions 33 are respectively formed from a plurality of circular protrusions 41 arranged along the axial direction of the axle 13. Composed.
　第５の実施形態は、第１の実施形態の変形例で、図１３および図１４に示されるように車軸１３の外周面１３ａ上の突起部３２、クランプ具２５の溝部３５の両側を、クランプ具２５の差込みが進むにしたがい両者が接近するテーパ形にしたものである。具体的には、車軸１３の突起条３３は、両側面が、車軸１３の端から奥へ向かうにしたがい次第に拡がる斜面３４としたテーパ形状に形成され、直線溝３６も、同テーパ形に対応して、車軸１３の端から奥へ向かうにしたがい溝幅が次第に拡がる斜面３７としたテーパ形に形成される。
　突起部３２及び溝部３５の両側をテーパ形にすると、クランプ具２５を差込む際、突起部３２と溝部３５の位置が多少ずれていたとしても、突起部３２、溝部３５は嵌りやすくなる。しかも、差込みが進むにつれ次第に真っ直ぐの向きに直されるので、正しくクランプ具が差込める利点がある。 The fifth embodiment is a modification of the first embodiment. As shown in FIGS. 13 and 14, the projection 32 on the outer peripheral surface 13 a of the axle 13 and both sides of the groove 35 of the clamp tool 25 are clamped. As the insertion of the tool 25 progresses, the taper is formed so that the two approach each other. Specifically, the protrusions 33 of the axle 13 are formed in a tapered shape whose both side surfaces are inclined surfaces 34 that gradually expand from the end of the axle 13 toward the back, and the linear groove 36 also corresponds to the tapered shape. Thus, the groove 13 is formed in a tapered shape with an inclined surface 37 in which the groove width gradually increases from the end of the axle 13 toward the back.
If both sides of the projecting portion 32 and the groove portion 35 are tapered, the projecting portion 32 and the groove portion 35 are easily fitted even when the positions of the projecting portion 32 and the groove portion 35 are slightly shifted when the clamp tool 25 is inserted. In addition, as the insertion proceeds, the straightening direction is gradually adjusted, so that there is an advantage that the clamping tool can be correctly inserted.
　第６の実施形態は、第３の実施形態の変形例で、図１５および図１６に示されるように複数の突起条３３から構成した突起部３２、複数の直線溝３６から構成した溝部３５に、第５の実施形態で挙げたテーパ形を適用して、案内構造部３０が構成されるようにしたものである。
　第７の実施形態は、第４の実施形態の変形例で、図１７に示されるようにそれぞれ軸心方向に沿って並べた二列の突起４１の外形を順次、異ならせて、第５の実施形態や第６の実施形態のテーパ形と同様の作用効果が得られるよう構成したものである。 The sixth embodiment is a modification of the third embodiment. As shown in FIG. 15 and FIG. 16, the sixth embodiment includes a protrusion 32 constituted by a plurality of protrusions 33 and a groove 35 constituted by a plurality of linear grooves 36. The guide structure 30 is configured by applying the tapered shape mentioned in the fifth embodiment.
The seventh embodiment is a modification of the fourth embodiment. As shown in FIG. 17, the outer shapes of the two rows of protrusions 41 arranged along the axial direction are sequentially made different from each other. This is configured to obtain the same operational effects as those of the tapered shape of the embodiment and the sixth embodiment.
　第８の実施形態は、第１の実施形態の変形例で、図１８および図１９に示されるように第１の実施形態とは反対に、車軸１３の外周面１３ａに直線溝４５を設け、クランプ具２５の内面２５ａに直線形の突起条４７を設けて、案内構造部３０が構成されるようにしたものである。
　このようにしても第１の実施形態と同様の効果を奏する。特に本実施形態の直線溝４５、突起条４７は、第５の実施形態と同様、両側面がテーパ形に形成されているので、クランプ具２５の差込みを、容易にして正しく行うことができる。 The eighth embodiment is a modification of the first embodiment, and as shown in FIGS. 18 and 19, contrary to the first embodiment, a linear groove 45 is provided on the outer peripheral surface 13 a of the axle 13, The guide structure 30 is configured by providing a linear protrusion 47 on the inner surface 25 a of the clamp tool 25.
Even if it does in this way, there exists an effect similar to 1st Embodiment. In particular, since the straight grooves 45 and the protrusions 47 of the present embodiment are tapered on both side surfaces as in the fifth embodiment, the clamping tool 25 can be inserted easily and correctly.
　第９の実施形態は、第８の実施形態の変形例で、図２０に示されるように突起条４７の代わりに、複数の円形の複数の突起４９を差込み方向に並べて、突起部３２が構成されるようにしたものである。特に本実施形態では、軸心方向に沿って並べた複数の突起４９の外形を順次、異ならせてあり、第５の実施形態と同様、クランプ具２５の差込みを、容易にして正しく行うことができる。 The ninth embodiment is a modification of the eighth embodiment, and a plurality of circular protrusions 49 are arranged in the insertion direction instead of the protrusion 47 as shown in FIG. It is made to be done. In particular, in the present embodiment, the external shapes of the plurality of protrusions 49 arranged in the axial direction are sequentially changed, and the clamping tool 25 can be inserted easily and correctly as in the fifth embodiment. it can.
　第１０の実施形態は、第８の実施形態や第９の実施形態の変形例で、図２１および図２２に示されるように円形の複数の突起４９や直線溝４５を複数列にしたり、突起４９の外形や溝幅を順に異ならせて、第５の実施形態や第６の実施形態のテーパ形と同様の作用効果が得られるように突起部３２や溝部３５を構成したものである。 The tenth embodiment is a modification of the eighth embodiment and the ninth embodiment, and as shown in FIGS. 21 and 22, a plurality of circular protrusions 49 and linear grooves 45 are arranged in a plurality of rows, or protrusions The protrusion 32 and the groove 35 are configured so that the outer shape and the groove width of 49 are sequentially changed to obtain the same effect as the tapered shape of the fifth embodiment and the sixth embodiment.
　第１１の実施形態は、第１０の実施形態の変形例で、図２３に示されるように突起部３２を、複数の突起でなく、差込み方向に延びる複数列の突起条４８で構成されるようにしたものである。この場合にも、それぞれ突起条４８は両側がテーパ形に形成されている。 The eleventh embodiment is a modification of the tenth embodiment, and as shown in FIG. 23, the protrusions 32 are configured not by a plurality of protrusions but by a plurality of protrusions 48 extending in the insertion direction. It is a thing. Also in this case, the protrusions 48 are each formed in a tapered shape.
　第１２の実施形態は、第１～第１１の実施形態で挙げた突起部と溝部を用いてクランプ具の向きを規制した構造ではなく、図２４に示されるようにクランプ具２５の向きを、クランプ具２５の差込方向と交差する両側方向から規制する構造の案内構造部３０を用いたものである。 The twelfth embodiment is not a structure in which the direction of the clamp tool is regulated by using the projections and the grooves described in the first to eleventh embodiments, but the direction of the clamp tool 25 as shown in FIG. The guide structure 30 is configured to be controlled from both sides intersecting the insertion direction of the clamp tool 25.
　具体的には、車軸１３の外周面のうち、クランプ具２５の差込方向とは交差する両側の位置に、車軸１３の軸心方向に沿って延びる一対の案内条５０を設けて、案内構造部３０が構成されるようにした。この一対の案内条５０でも、第１～１１の実施形態と同様、各案内条５０の内面をガイドとして、クランプ具２５を隙間δへ真っ直ぐに差込むようにできる。しかも、一対の案内条５０を設けるだけなので、簡単な構造ですむ。 Specifically, a pair of guide strips 50 extending along the axial direction of the axle 13 are provided at positions on both sides of the outer peripheral surface of the axle 13 that intersect with the insertion direction of the clamp 25, thereby providing a guide structure. Part 30 is configured. In this pair of guide strips 50, as in the first to eleventh embodiments, the inner surface of each guide strip 50 can be used as a guide, and the clamp tool 25 can be inserted straight into the gap δ. Moreover, since only a pair of guide strips 50 is provided, a simple structure is sufficient.
　また一対の案内条５０の向き合う内面５０ａは、クランプ具２５が差込みやすくなるテーパ形、ここでは入口側に向かうにしたがい拡がるテーパ形に形成されているので、容易にして正しくクランプ具２５を差込むことができる。
　但し、図８～図２４において、上述した第１の実施形態と同一部分には、同一符号を付してその説明を省略した。 Further, the inner surfaces 50a facing each other of the pair of guide strips 50 are formed in a taper shape that allows the clamp tool 25 to be easily inserted, here, a taper shape that expands toward the inlet side, so that the clamp tool 25 can be easily and correctly inserted. be able to.
However, in FIGS. 8 to 24, the same parts as those of the first embodiment described above are denoted by the same reference numerals, and the description thereof is omitted.
　なお、本発明は、上述した実施形態に限定されるものではなく、本発明の主旨を逸脱しない範囲内で種々可変して実施しても構わない。例えば上述した実施形態では、リムを車軸に固定してから、タイヤを組み付ける構造に本発明を適用したが、これに限らず、予めタイヤが組み付けてあるリムを車軸に固定する構造にも、本発明を適用してもよいことはいうまでもない。 It should be noted that the present invention is not limited to the above-described embodiment, and various modifications may be made without departing from the spirit of the present invention. For example, in the embodiment described above, the present invention is applied to a structure in which a rim is fixed to an axle and then a tire is assembled. However, the present invention is not limited to this, and the present invention is also applied to a structure in which a rim on which a tire is assembled in advance is fixed to an axle. It goes without saying that the invention may be applied.
　１３　車軸
　１３ａ　外周面（リム取付面）
　１９　リム
　２０　テーパ面
　２５　クランプ具
　２５ａ　内面
　２５ｂ　外面
　２７　テーパ面
　３０　案内構造部
　３２　突起部
　３５　溝部
　５０　一対の案内条
　δ　環状の隙間 13 Axle 13a Outer peripheral surface (rim mounting surface)
19 Rim 20 Tapered surface 25 Clamping tool 25a Inner surface 25b Outer surface 27 Tapered surface 30 Guide structure portion 32 Projection portion 35 Groove portion 50 A pair of guide strips δ Annular gap

Claims (6)

  1. 　車両の車幅方向側部に配置された、リム取付面をなす外周面(13a)を有する車軸(13)と、
    　一方の端側に径方向で前記車軸に向け傾斜するテーパ面(20)をもつ内周面(19d)を有し、前記内周面を前記車軸の外周面に嵌めて該車軸の周りに配置された環状のリム(19)と、
    　前記車軸の外周面と重なる内面(25a)と、テーパ面(27)を一端に有した外面(25b)とを有し、前記車軸の外周面と前記リムの内周面との環状の隙間（δ）に差込み可能なくさび形のクランプ具(25)とを備え、
    　前記車軸の端側から、前記車軸の外周面と前記リムの内周面との環状の隙間へ、複数個所から、前記クランプ具を前記車軸の外周面に前記内面を重ね合わせながら差込むことにより、前記クランプ具のテーパ面(27)を前記リムのテーパ面(20)に押し当て、前記リムを前記車軸に固定する運搬車両のリム固定構造であって、
    　前記車軸の外周面及び前記クランプ具の内面のうち少なくとも前記車軸の外周面には、前記環状の隙間へ差込まれる前記クランプ具の向きを所定の向きに案内する案内構造部(30)が設けられる
    　ことを特徴とする運搬車両のリム固定構造。     An axle (13) having an outer peripheral surface (13a) that forms a rim mounting surface, disposed on the side in the vehicle width direction of the vehicle;
    One end side has an inner peripheral surface (19d) having a tapered surface (20) inclined in the radial direction toward the axle, and the inner peripheral surface is fitted to the outer peripheral surface of the axle and arranged around the axle. An annular rim (19),
    An inner surface (25a) overlapping the outer peripheral surface of the axle, and an outer surface (25b) having a tapered surface (27) at one end, and an annular gap between the outer peripheral surface of the axle and the inner peripheral surface of the rim ( a wedge-shaped clamp (25) that can be inserted into δ),
    By inserting the clamp tool from a plurality of locations into an annular gap between the outer peripheral surface of the axle and the inner peripheral surface of the rim from the end side of the axle while superimposing the inner surface on the outer peripheral surface of the axle. A rim fixing structure for a transport vehicle that presses the tapered surface (27) of the clamp tool against the tapered surface (20) of the rim, and fixes the rim to the axle,
    Of the outer peripheral surface of the axle and the inner surface of the clamp tool, at least the outer peripheral face of the axle is provided with a guide structure (30) for guiding the direction of the clamp tool inserted into the annular gap in a predetermined direction. A rim fixing structure for a transport vehicle.
  2. 　前記案内構造部(30)は、前記車軸(13)の軸心方向に沿って前記車軸の外周面(13a)に設けられた突起部(32)と、前記クランプ具の差込み方向に沿って前記クランプ具(25)の内面(25a)に設けられた前記突起部が出入り可能な溝部(35)とを有して構成される
    　ことを特徴とする請求項１に記載の運搬車両のリム固定構造。     The guide structure portion (30) includes a protrusion (32) provided on the outer peripheral surface (13a) of the axle along the axial direction of the axle (13), and the insertion direction of the clamp tool. The rim fixing structure for a transport vehicle according to claim 1, further comprising a groove (35) in which the protrusion provided on the inner surface (25a) of the clamp tool (25a) can enter and exit. .
  3. 　前記案内構造部(30)は、前記車軸(13)の軸心方向に沿って前記車軸の外周面(13a)に設けられた溝部(35)と、前記クランプ具の差込み方向に沿って前記クランプ具(25)の内面(25a)に設けられた前記溝部内に出入り可能な突起部(32)とを有して構成される
    　ことを特徴とする請求項１に記載の運搬車両のリム固定構造。     The guide structure portion (30) includes a groove portion (35) provided on an outer peripheral surface (13a) of the axle along the axial direction of the axle (13), and the clamp along the insertion direction of the clamp tool. The rim fixing structure for a transport vehicle according to claim 1, further comprising a protrusion (32) that can enter and exit into the groove provided on the inner surface (25a) of the tool (25). .
  4. 　前記案内構造部(30)は、前記クランプ具(25)の差込み方向と交差する前記クランプ具の両側に位置して前記外周面(13a)に設けられ、前記差込まれるクランプ具を両側方向から規制する一対の案内条(50)を有して構成される
    　ことを特徴とする請求項１に記載の運搬車両のリム固定構造。     The guide structure part (30) is provided on the outer peripheral surface (13a) and located on both sides of the clamp tool intersecting the insertion direction of the clamp tool (25), and the clamp tool to be inserted is viewed from both sides. The rim fixing structure for a transport vehicle according to claim 1, comprising a pair of guide strips (50) to be regulated.
  5. 　前記前記突起部(32)と前記溝部(35)は、各両側(34,37)が前記クランプ具の差込みが進むにしたがい次第に接近するテーパ形に形成されてなる
    　ことを特徴とする請求項２に記載の運搬車両のリム固定構造。     The protrusion (32) and the groove (35) are formed in a tapered shape in which both sides (34, 37) gradually approach as the insertion of the clamp tool proceeds. The rim fixing structure of the transport vehicle described in 1.
  6. 　前記前記突起部(32)と前記溝部(35)は、各両側(34,37)が前記クランプ具の差込みが進むにしたがい次第に接近するテーパ形に形成されてなる
    　ことを特徴とする請求項３に記載の運搬車両のリム固定構造。     The said protrusion part (32) and the said groove part (35) are formed in the taper shape from which both sides (34,37) approach gradually as insertion of the said clamp tool progresses, The 3rd aspect is characterized by the above-mentioned. The rim fixing structure of the transport vehicle described in 1.
PCT/JP2013/073013 2013-08-28 2013-08-28 Rim-securing structure for transport vehicle WO2015029162A1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160236735A1 (en) * 2014-03-05 2016-08-18 Komatsu Ltd. Roller device and roller shell for track-type work vehicle
CN109397978A (en) * 2018-12-10 2019-03-01 株洲中车特种装备科技有限公司 A kind of single track excursion train wheel mounting structure
CN112520334A (en) * 2020-12-11 2021-03-19 芜湖恩之伟汽车零部件有限公司 Handling equipment is used in automobile wheel hub processing

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR652278A (en) * 1928-04-05 1929-03-06 Device for assembling two shafts
JPS5983605U (en) * 1982-11-30 1984-06-06 日産ディーゼル工業株式会社 Double wheel structure wheel mounting device
JPH09329112A (en) * 1996-06-11 1997-12-22 Kubota Corp Shaft connecting device
JP2002372013A (en) * 2001-06-16 2002-12-26 Takeshi Kameyama Tightening device
JP2010076749A (en) * 2008-08-28 2010-04-08 Hitachi Constr Mach Co Ltd Transportation vehicle
JP2011169432A (en) * 2010-02-22 2011-09-01 Matsumoto Sangyo:Kk Connector for power transmission
JP2012218604A (en) * 2011-04-11 2012-11-12 Hitachi Constr Mach Co Ltd Carrying vehicle

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR652278A (en) * 1928-04-05 1929-03-06 Device for assembling two shafts
JPS5983605U (en) * 1982-11-30 1984-06-06 日産ディーゼル工業株式会社 Double wheel structure wheel mounting device
JPH09329112A (en) * 1996-06-11 1997-12-22 Kubota Corp Shaft connecting device
JP2002372013A (en) * 2001-06-16 2002-12-26 Takeshi Kameyama Tightening device
JP2010076749A (en) * 2008-08-28 2010-04-08 Hitachi Constr Mach Co Ltd Transportation vehicle
JP2011169432A (en) * 2010-02-22 2011-09-01 Matsumoto Sangyo:Kk Connector for power transmission
JP2012218604A (en) * 2011-04-11 2012-11-12 Hitachi Constr Mach Co Ltd Carrying vehicle

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160236735A1 (en) * 2014-03-05 2016-08-18 Komatsu Ltd. Roller device and roller shell for track-type work vehicle
US10086889B2 (en) * 2014-03-05 2018-10-02 Komatsu Ltd. Roller device and roller shell for track-type work vehicle
CN109397978A (en) * 2018-12-10 2019-03-01 株洲中车特种装备科技有限公司 A kind of single track excursion train wheel mounting structure
CN112520334A (en) * 2020-12-11 2021-03-19 芜湖恩之伟汽车零部件有限公司 Handling equipment is used in automobile wheel hub processing

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