WO2015029162A1 - Rim-securing structure for transport vehicle - Google Patents
Rim-securing structure for transport vehicle Download PDFInfo
- 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
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- WO
- WIPO (PCT)
- Prior art keywords
- axle
- rim
- peripheral surface
- clamp tool
- outer peripheral
- Prior art date
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 90
- 238000003780 insertion Methods 0.000 claims description 28
- 230000037431 insertion Effects 0.000 claims description 28
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 230000004048 modification Effects 0.000 description 9
- 238000012986 modification Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 125000006850 spacer group Chemical group 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Images
Classifications
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- 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
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 inPatent 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.
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
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.
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.
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).
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).
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. (
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 (
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.
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 theaxle 13.
The structure for assembling therear 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 outerperipheral 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.
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
The structure for assembling the
The outer
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 theclamp 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, theguide 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.
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
Therefore, the
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, theclamp 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, theclamp 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.
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
Therefore, the
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 thetaper 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 theprotrusion 32 and the groove 35 are combined is used for the guide structure 30, a simple structure is sufficient.
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
Moreover, since a structure in which the
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, theprotrusion 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 ofprotrusions 33 are respectively formed from a plurality of circular protrusions 41 arranged along the axial direction of the axle 13. Composed.
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
The fourth embodiment is a modification of the third embodiment. As shown in FIG. 12, the plurality of
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, theprojection 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 projectingportion 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.
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
If both sides of the projecting
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 aprotrusion 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 ofprotrusions 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
The seventh embodiment is a modification of the fourth embodiment. As shown in FIG. 17, the outer shapes of the two rows of
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, alinear 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 thestraight 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.
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
Even if it does in this way, there exists an effect similar to 1st Embodiment. In particular, since the
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, theinner 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.
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
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 13Axle 13a Outer peripheral surface (rim mounting surface)
19Rim 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
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
19
Claims (6)
- 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. - 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. . - 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). . - 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. - 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. - 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.
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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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