WO2014155836A1 - Axle device for working vehicle, and working vehicle - Google Patents
Axle device for working vehicle, and working vehicle Download PDFInfo
- Publication number
- WO2014155836A1 WO2014155836A1 PCT/JP2013/082571 JP2013082571W WO2014155836A1 WO 2014155836 A1 WO2014155836 A1 WO 2014155836A1 JP 2013082571 W JP2013082571 W JP 2013082571W WO 2014155836 A1 WO2014155836 A1 WO 2014155836A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- peripheral surface
- outer peripheral
- bearing
- axle
- axial direction
- Prior art date
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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
- B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
- B60B35/12—Torque-transmitting axles
- B60B35/18—Arrangement of bearings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
- B60B35/12—Torque-transmitting axles
- B60B35/121—Power-transmission from drive shaft to hub
- B60B35/122—Power-transmission from drive shaft to hub using gearings
- B60B35/125—Power-transmission from drive shaft to hub using gearings of the planetary type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
- B60B35/12—Torque-transmitting axles
- B60B35/16—Axle housings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/043—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
- B60K17/046—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel with planetary gearing having orbital motion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/40—Special vehicles
- B60Y2200/41—Construction vehicles, e.g. graders, excavators
- B60Y2200/415—Wheel loaders
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/02—Travelling-gear, e.g. associated with slewing gears
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/202—Mechanical transmission, e.g. clutches, gears
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- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
- F16C19/36—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
- F16C19/364—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
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- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/54—Systems consisting of a plurality of bearings with rolling friction
- F16C19/546—Systems with spaced apart rolling bearings including at least one angular contact bearing
- F16C19/547—Systems with spaced apart rolling bearings including at least one angular contact bearing with two angular contact rolling bearings
- F16C19/548—Systems with spaced apart rolling bearings including at least one angular contact bearing with two angular contact rolling bearings in O-arrangement
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2326/00—Articles relating to transporting
- F16C2326/01—Parts of vehicles in general
- F16C2326/02—Wheel hubs or castors
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2326/00—Articles relating to transporting
- F16C2326/20—Land vehicles
Definitions
- the present invention relates to a work vehicle axle device and a work vehicle.
- the axle device is a device for transmitting driving force from the engine to the tire.
- the axle device includes an axle shaft, an axle housing, and a planetary gear mechanism.
- the axle housing houses the axle shaft.
- the planetary gear mechanism is disposed on the side of the axle shaft.
- the axle housing is supported by the wheel hub via a bearing.
- the ring gear of the planetary gear mechanism is supported on the axle housing via a ring gear hub.
- the ring gear hub is connected to the axle housing.
- a fixing member is attached to the end of the axle housing in the axial direction. The movement of the ring gear hub and the wheel hub is restricted by the fixing member. Thereby, a wheel is hold
- the fixing member is firmly fixed to the axle housing.
- the holding force of the wheel can be improved by enlarging the fixing member and increasing the fixing force of the fixing member.
- the axle device is enlarged.
- the holding force of the wheel can be improved by adding a fixing member different from the fixing member.
- a structure for attaching an additional fixing member is required, and there is a problem that the structure of the axle device is complicated. Or the space for arrange
- An object of the present invention is to improve the wheel holding force with a simple structure in the axle device and to prevent the axle device from being enlarged.
- An axle device for a work vehicle includes an axle shaft, an axle housing, a planetary gear mechanism, a wheel hub, a carrier, a wheel, a first bearing, a ring gear hub, and a first gear.
- a fixing member and a second fixing member are provided.
- the axle housing houses the axle shaft.
- the planetary gear mechanism is disposed outside the axle housing in the axial direction.
- the planetary gear mechanism has a sun gear, a planetary gear, and a ring gear.
- the sun gear is fixed to the axle shaft.
- the planetary gear meshes with the sun gear.
- the ring gear meshes with the planetary gear.
- the wheel hub is disposed outward of the axle housing in the radial direction.
- the carrier rotatably supports the planetary gear.
- the carrier is disposed outside the wheel hub in the axial direction.
- the carrier houses the planetary gear mechanism.
- the wheel houses a wheel hub and a carrier.
- the wheel is attached to the wheel hub and the carrier.
- the first bearing is disposed between the inner peripheral surface of the wheel hub and the outer peripheral surface of the axle housing.
- the ring gear hub is disposed outside the first bearing in the axial direction and outside the axle housing in the radial direction.
- the ring gear hub is connected to the ring gear.
- the first fixing member is disposed outside the ring gear hub in the axial direction.
- the first fixing member is fixed to the axle housing.
- the second fixing member is disposed outward of the first bearing in the axial direction and outward of the axle housing in the radial direction.
- the outer peripheral surface of the axle housing has a first outer peripheral surface, a second outer peripheral surface, and a stepped portion.
- the first outer peripheral surface supports the first bearing.
- the second outer peripheral surface has an outer diameter that is smaller than the outer diameter of the first outer peripheral surface.
- the step portion is located between the first outer peripheral surface and the second outer peripheral surface.
- the axle housing has a spline and a relief groove.
- the spline is provided on the second outer peripheral surface.
- the escape groove is disposed between the spline and the step portion on the second outer peripheral surface.
- the ring gear hub is connected to the axle housing via a spline.
- the second fixing member is fitted in the escape groove.
- the outer peripheral surface of the second fixing member is located outward from the inner peripheral surface of the first bearing in the radial direction.
- the holding force of the wheel can be improved by the first fixing member and the second fixing member.
- the second fixing member is fitted in the escape groove.
- the relief groove is a configuration that is required when processing to form a spline on the outer peripheral surface of the axle housing. Therefore, the second fixing member can be attached using the escape groove without adding a complicated structure for attaching the second fixing member. Thereby, the holding force of a wheel can be improved with a simple structure.
- the outer end in the axial direction of the inner peripheral surface of the first bearing has a shape in which the inner diameter increases in a direction approaching the second fixing member.
- the first bearing moves outward in the axial direction
- the first bearing rides on the second fixing member.
- the outer peripheral surface of the first bearing is pressed against the inner peripheral surface of the wheel hub. As a result, the holding force of the wheel hub can be increased.
- the first bearing has an outer ring, an inner ring, and a rolling element.
- the rolling element has a truncated cone shape disposed between the outer ring and the inner ring.
- the ring gear hub is in contact with the inner ring.
- the inner ring of the first bearing rides on the second fixing member.
- the outer peripheral surface of the outer ring of the first bearing is pressed against the inner peripheral surface of the wheel hub. Thereby, the holding force of the wheel can be further increased.
- the work vehicle axle device further includes a second bearing.
- the second bearing is disposed inward of the first bearing in the axial direction and between the inner peripheral surface of the wheel hub and the outer peripheral surface of the axle housing.
- the inner peripheral surface of the wheel hub has a protrusion that is disposed between the first bearing and the second bearing in the axial direction. In this case, the outward movement in the axial direction of the second bearing is restricted by the protrusion. Thereby, the holding force of the wheel can be further increased.
- the ring gear hub has a recess.
- the recess has a shape recessed in the axial direction from the inner end in the axial direction of the ring gear hub.
- a second fixing member is disposed in the recess.
- the second fixing member and the ring gear hub can be arranged more compactly in the axial direction than in the case where the second fixing member is arranged away from the ring gear hub in the axial direction. Thereby, an axle apparatus can be reduced in size.
- a work vehicle according to an aspect of the present invention includes the above-described axle device.
- the holding force of the wheel can be improved with a simple structure, and an increase in the size of the axle device can be prevented.
- FIG. 1 is a perspective view of the work vehicle 1.
- the work vehicle 1 is a wheel loader.
- the work vehicle 1 includes a vehicle body 2, a work implement 3, a plurality of tires 4, and a cab 5.
- the cab 5 is placed on the vehicle body 2.
- the work machine 3 is attached to the front portion of the vehicle body 2.
- the work machine 3 includes a boom 6, a bucket 7, and hydraulic actuators 8 and 9.
- the boom 6 is a member for lifting the bucket 7.
- the boom 6 is attached to the vehicle body 2 so as to be rotatable in the vertical direction.
- the bucket 7 is attached to the tip of the boom 6 so as to be rotatable in the vertical direction.
- the hydraulic actuators 8 and 9 have a boom cylinder 8 and a bucket cylinder 9.
- the boom 6 is rotated up and down by a boom cylinder 8.
- the bucket 7 is rotated up and down by a bucket cylinder 9.
- the boom 6 can be mounted with other working tools such as forks instead of the bucket 7.
- the work vehicle 1 includes an engine 11 and a hydraulic pump 12.
- the engine 11 is, for example, a diesel engine, and the driving force generated by the engine 11 is transmitted to the hydraulic pump 12.
- the driving force generated by the engine 11 is transmitted to the tire 4 via an axle device described later.
- the hydraulic pump 12 discharges hydraulic oil when driven by the engine 11.
- the hydraulic actuators 8 and 9 described above are driven by hydraulic oil discharged from the hydraulic pump 12.
- FIG. 2 is a cross-sectional view of the axle device 13 in the II-II cross-sectional view of FIG.
- the axle device 13 includes an axle shaft 21, an axle housing 22, a planetary gear mechanism 23, a wheel hub 24, a carrier 25, a cover 34, and a wheel 26.
- the axle shaft 21 is arranged so that the central axis of the axle shaft 21 is along the vehicle width direction of the work vehicle 1.
- the axle shaft 21 is rotationally driven by the driving force from the engine 11.
- the axle shaft 21 has a universal joint 27.
- the universal joint 27 is disposed in the main body housing 28.
- the axial direction means a direction parallel to the central axis of the axle shaft 21.
- the inward in the axial direction means a direction toward the center of the vehicle body 2 in a direction parallel to the central axis of the axle shaft 21.
- the outward direction in the axial direction means a direction away from the center of the vehicle body 2 in a direction parallel to the central axis of the axle shaft 21.
- Inward in the radial direction means a direction toward the central axis of the axle shaft 21 in a direction parallel to the radial direction of the axle shaft 21.
- the outward direction in the radial direction means a direction away from the central axis of the axle shaft 21 in a direction parallel to the radial direction of the axle shaft 21.
- the axle housing 22 accommodates the axle shaft 21.
- the axle housing 22 is fixed to the main body housing 28.
- the end of the axle shaft 21 protrudes outward in the axial direction from the end of the axle housing 22.
- the planetary gear mechanism 23 is disposed outward in the axial direction of the axle housing 22.
- the planetary gear mechanism 23 is connected to the axle shaft 21 and transmits the rotation of the axle shaft 21 to the wheel 26 at a reduced speed.
- the planetary gear mechanism 23 includes a sun gear 31, a plurality of planetary gears 32, and a ring gear 33.
- the sun gear 31 is disposed concentrically with the axle shaft 21.
- the sun gear 31 is fixed to the axle shaft 21 and rotates together with the axle shaft 21.
- the planetary gear 32 is disposed around the sun gear 31 and meshes with the sun gear 31.
- the planetary gear 32 is disposed so as to be able to revolve around the sun gear 31.
- the planetary gear 32 is disposed so as to be rotatable about the planetary gear 32 axis.
- the ring gear 33 meshes with the planetary gear 32.
- the planetary gear 32 is disposed so as to be rotatable with respect to the ring gear 33.
- the carrier 25 supports the planetary gear 32 in a rotatable manner.
- the carrier 25 rotates with the revolution of the planetary gear 32.
- the cover 34 is fixed to the carrier 25.
- the wheel hub 24 is disposed outward in the radial direction of the axle housing 22.
- the carrier 25 is disposed outward in the axial direction of the wheel hub 24.
- the carrier 25 accommodates the planetary gear mechanism 23.
- the wheel 26 accommodates the wheel hub 24 and the carrier 25.
- the wheel 26 is attached to the wheel hub 24 and the carrier 25 by fixing means such as bolts.
- the tire 26 described above is attached to the wheel 26.
- FIG. 3 is an enlarged view of a part of FIG.
- the axle device 13 includes a first bearing 35, a second bearing 36, a ring gear hub 37, a first fixing member 38, and a second fixing member 39.
- the first bearing 35 is disposed between the inner peripheral surface of the wheel hub 24 and the outer peripheral surface of the axle housing 22.
- the second bearing 36 is disposed between the inner peripheral surface of the wheel hub 24 and the outer peripheral surface of the axle housing 22.
- the first bearing 35 is a so-called tapered roller bearing.
- the first bearing 35 includes a first outer ring 351, a first inner ring 352, and a first rolling element 353.
- the first rolling element 353 is disposed between the first outer ring 351 and the first inner ring 352.
- the first rolling element 353 has a truncated cone shape.
- the first rolling element 353 is arranged such that the central axis of the first rolling element 353 is inclined outward in the axial direction and outward in the radial direction.
- the inner peripheral surface of the first bearing 35 has an end 354.
- the end portion 354 is an end portion on the outer side in the axial direction on the inner peripheral surface of the first bearing 35.
- the end 354 has a shape in which the inner diameter increases toward the outside in the axial direction. That is, the end portion 354 of the first inner ring 352 has a shape in which the inner diameter increases toward the outside in the axial direction.
- the first bearing 35 and the second bearing 36 are arranged side by side in the axial direction.
- the second bearing 36 is disposed inward in the axial direction of the first bearing 35.
- the second bearing 36 is disposed between the inner peripheral surface of the wheel hub 24 and the outer peripheral surface of the axle housing 22.
- the second bearing 36 is a so-called tapered roller bearing.
- the second bearing 36 includes a second outer ring 361, a second inner ring 362, and a second rolling element 363.
- the second rolling element 363 is disposed between the second outer ring 361 and the second inner ring 362.
- the second rolling element 363 has a truncated cone shape.
- the second rolling elements 363 are arranged such that the central axis is inclined inward in the axial direction and outward in the radial direction.
- the inner peripheral surface of the second bearing 36 has an end 364.
- the end 364 is an end on the inner side in the axial direction on the inner peripheral surface of the second bearing 36.
- the end 364 has a shape with an inner diameter that increases inward in the axial direction. That is, the end portion 364 of the second inner ring 362 has a shape in which the inner diameter increases toward the inside in the axial direction.
- the ring gear hub 37 is disposed outward in the axial direction of the first bearing 35.
- the ring gear hub 37 is disposed outward in the radial direction of the axle housing 22.
- the ring gear hub 37 is connected to the ring gear 33.
- the ring gear hub 37 is in contact with the first inner ring 352.
- the ring gear hub 37 is in contact with the outer end surface 355 in the axial direction of the first inner ring 352.
- the outer peripheral surface of the axle housing 22 has a fourth outer peripheral surface 221 and a first outer peripheral surface 222.
- the fourth outer peripheral surface 221 supports the oil seal 41.
- the oil seal 41 is disposed between the axle housing 22 and the wheel hub 24.
- the oil seal 41 seals a gap between the axle housing 22 and the wheel hub 24.
- the first outer peripheral surface 222 supports the first bearing 35 and the second bearing 36. A portion supporting the first bearing 35 and a portion supporting the second bearing 36 on the first outer peripheral surface 222 are connected flatly.
- the diameter of the first outer peripheral surface 222 is smaller than the diameter of the fourth outer peripheral surface 221. For this reason, a first step 226 is formed between the fourth outer peripheral surface 221 and the first outer peripheral surface 222.
- the second inner ring 362 of the second bearing 36 is in contact with the first step portion 226.
- the inner peripheral surface of the wheel hub 24 has a protruding portion 241.
- the protruding portion 241 is disposed outward in the radial direction of the first outer peripheral surface 222.
- the projecting portion 241 is disposed between the first bearing 35 and the second bearing 36 in the axial direction.
- the protruding portion 241 is disposed between the first outer ring 351 and the second outer ring 361.
- the outer peripheral surface of the axle housing 22 has a second outer peripheral surface 223 and a second step portion 229.
- the second outer peripheral surface 223 is disposed outward in the axial direction of the first outer peripheral surface 222.
- the diameter of the second outer peripheral surface 223 is smaller than the diameter of the first outer peripheral surface 222.
- the second step portion 229 is located between the first floor circumferential surface 222 and the second outer circumferential surface 223.
- the second outer peripheral surface 223 has a spline 227 and a relief groove 228.
- the spline 227 extends in the axial direction on the outer peripheral surface of the axle housing 22.
- the spline 227 is disposed outward in the axial direction of the first outer peripheral surface 222.
- the escape groove 228 extends in the circumferential direction on the outer peripheral surface of the axle housing 22.
- the escape groove 228 is disposed between the spline 227 and the second step portion 229 in the axial direction. That is, the escape groove 228 is disposed between the spline 227 and the first bearing 35 in the axial direction.
- the outer peripheral surface of the axle housing 22 has a third outer peripheral surface 224.
- the third outer peripheral surface 224 is disposed outward in the axial direction of the second outer peripheral surface 223.
- the diameter of the third outer peripheral surface 224 is smaller than the diameter of the second outer peripheral surface 223.
- a male screw is provided on the outer peripheral surface of the third outer peripheral surface 224.
- the first fixing member 38 has a nut shape.
- the first fixing member 38 is disposed outward in the axial direction of the ring gear hub 37.
- the first fixing member 38 is fixed to the axle housing 22.
- the first fixing member 38 is fixed to the third outer peripheral surface 224.
- a female screw is provided on the inner peripheral surface of the first fixing member 38.
- the first fixing member 38 is fixed to the third outer peripheral surface 224 by the male screw of the third outer peripheral surface 224 being screwed into the female screw of the first fixing member 38.
- the ring gear hub 37 has a first recess 371.
- the first recess 371 has a shape that is recessed in the axial direction from the outer end in the axial direction of the ring gear hub 37.
- a first fixing member 38 is disposed in the first recess 371.
- the ring gear hub 37 is sandwiched between the first bearing 35 and the first fixing member 38. Thereby, the movement of the ring gear hub 37 in the axial direction is restricted.
- the second fixing member 39 is, for example, a snap ring.
- the second fixing member 39 is disposed outward in the axial direction of the first bearing 35.
- the second fixing member 39 is disposed outward in the radial direction of the axle housing 22.
- the second fixing member 39 is fitted in the escape groove 228.
- the outer peripheral surface of the second fixing member 39 is located outward in the radial direction from the inner peripheral surface of the first bearing 35.
- the ring gear hub 37 has a second recess 372.
- the second recess 372 has a shape that is recessed in the axial direction from the inner end of the ring gear hub 37 in the axial direction.
- a second fixing member 39 is disposed in the second recess 372.
- the characteristics of the axle device 13 according to the present embodiment are as follows. In the axle device 13, movement of the first bearing 35 and the ring gear hub 37 in the axial direction is restricted by the first fixing member 38. Further, the movement of the first bearing 35 in the axial direction is restricted by the second fixing member 39. Therefore, the holding force of the wheel 26 can be improved by the first fixing member 38 and the second fixing member 39. Moreover, since it is not necessary to enlarge the 1st fixing member 38, the enlargement of the axle apparatus 13 can be prevented. Further, the second fixing member 39 is fitted in the escape groove 228.
- the escape groove 228 is a configuration that is required when processing for forming the spline 227 on the outer peripheral surface of the axle housing 22 is performed. Therefore, the second fixing member 39 can be attached using the escape groove 228 without adding a complicated structure for attaching the second fixing member 39. Thereby, the holding force of the wheel 26 can be improved with a simple structure.
- the end portion 354 of the inner peripheral surface of the first bearing 35 has a shape in which the inner diameter increases in a direction approaching the second fixing member 39. For this reason, as shown in FIG. 4, when the first bearing 35 moves outward in the axial direction, the first inner ring 352 rides on the second fixing member 39. When the first inner ring 352 rides on the second fixing member 39, the first outer ring 351 is pressed against the inner peripheral surface of the wheel hub 24. Thereby, the holding force of the wheel hub 24 can be increased.
- the protrusion 241 on the inner peripheral surface of the wheel hub 24 is disposed between the first bearing 35 and the second bearing 36 in the axial direction. For this reason, the outward movement in the axial direction of the second bearing 36 is restricted by the protruding portion 241. Thereby, the holding force of the wheel 26 can be further increased.
- the second fixing member 39 is disposed in the second recess 372. For this reason, compared with the case where the 2nd fixing member 39 is arrange
- the present invention is not limited to a wheel loader, and may be applied to an axle device of another type of work vehicle such as a backhoe loader or a dump truck.
- the first fixing member is not limited to the shape described above.
- the first fixing member may have a plate shape and may be fixed to the axle shaft by a bolt.
- the second fixing member is not limited to the snap ring, and may have another shape as long as it can be fitted into the escape groove.
- the first bearing is not limited to the tapered roller bearing, but may be another type of bearing such as a ball bearing or a spherical roller bearing.
- the second bearing is not limited to the tapered roller bearing, but may be another type of bearing such as a ball bearing or a spherical roller bearing.
- the holding power of the wheel can be improved with a simple structure in the axle device, and the enlargement of the axle device can be prevented.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Support Of The Bearing (AREA)
- Retarders (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
The outer peripheral surface of an axle housing has a first outer peripheral surface, a second outer peripheral surface, and a stepped section. The first outer peripheral surface supports a first bearing. The second outer peripheral surface has a smaller outer diameter than the first outer peripheral surface. The stepped section is located between the first outer peripheral surface and the second outer peripheral surface. The axle housing has splines and a clearance groove. The splines are provided on the second outer peripheral surface and extend axially on the outer peripheral surface of the axle housing. The clearance groove extends circumferentially on the second outer peripheral surface of the axle housing and is disposed axially between the stepped section and the splines. A ring gear hub is connected to the axle housing through the splines. A second stationary member is fitted in the clearance groove. The outer peripheral surface of the second stationary member is located on the outside radially of the inner peripheral surface of the first bearing.
Description
本発明は、作業車両のアクスル装置及び作業車両に関する。
The present invention relates to a work vehicle axle device and a work vehicle.
ホイールローダ或いはバックホーローダなどの作業車両は、アクスル装置を備えている。アクスル装置は、エンジンからの駆動力をタイヤに伝達するための装置である。例えば、特許文献1に開示されているように、アクスル装置は、アクスル軸と、アクスルハウジングと、遊星歯車機構とを備えている。アクスルハウジングは、アクスル軸を収容している。遊星歯車機構は、アクスル軸の側方に配置される。アクスルハウジングは、軸受を介してホイールハブに支持される。遊星歯車機構のリングギアは、リングギアハブを介してアクスルハウジングに支持される。リングギアハブはアクスルハウジングに連結される。また、軸線方向におけるアクスルハウジングの端部には、固定部材が取り付けられる。固定部材により、リングギアハブとホイールハブとの移動が規制される。これにより、ホイールがアクスルハウジングに保持される。
Work vehicles such as wheel loaders or backhoe loaders are equipped with axle devices. The axle device is a device for transmitting driving force from the engine to the tire. For example, as disclosed in Patent Document 1, the axle device includes an axle shaft, an axle housing, and a planetary gear mechanism. The axle housing houses the axle shaft. The planetary gear mechanism is disposed on the side of the axle shaft. The axle housing is supported by the wheel hub via a bearing. The ring gear of the planetary gear mechanism is supported on the axle housing via a ring gear hub. The ring gear hub is connected to the axle housing. A fixing member is attached to the end of the axle housing in the axial direction. The movement of the ring gear hub and the wheel hub is restricted by the fixing member. Thereby, a wheel is hold | maintained at an axle housing.
ホイールのアクスルハウジングへの保持力を向上させるためには、固定部材がアクスルハウジングに強固に固定されることが好ましい。そのためには、固定部材を大型化させて、固定部材の固定力を増大させることにより、ホイールの保持力を向上させることができる。しかし、この場合、アクスル装置が大型化するという問題がある。また、固定部材とは別の固定部材を追加することによっても、ホイールの保持力を向上させることができる。しかし、この場合、追加の固定部材を取り付けるための構造が必要となり、アクスル装置の構造が複雑化するという問題がある。或いは、追加の固定部材を配置するためのスペースが必要がとなり、アクスル装置が大型化する場合もありうる。
In order to improve the holding force of the wheel to the axle housing, it is preferable that the fixing member is firmly fixed to the axle housing. For this purpose, the holding force of the wheel can be improved by enlarging the fixing member and increasing the fixing force of the fixing member. However, in this case, there is a problem that the axle device is enlarged. Further, the holding force of the wheel can be improved by adding a fixing member different from the fixing member. However, in this case, a structure for attaching an additional fixing member is required, and there is a problem that the structure of the axle device is complicated. Or the space for arrange | positioning an additional fixing member is needed, and an axle apparatus may enlarge.
本発明の課題は、アクスル装置において簡易な構造でホイールの保持力を向上させることができると共に、アクスル装置の大型化を防止することにある。
An object of the present invention is to improve the wheel holding force with a simple structure in the axle device and to prevent the axle device from being enlarged.
本発明の一態様に係る作業車両のアクスル装置は、アクスル軸と、アクスルハウジングと、遊星歯車機構と、ホイールハブと、キャリアと、ホイールと、第1の軸受と、リングギアハブと、第1固定部材と、第2固定部材とを備える。アクスルハウジングは、アクスル軸を収容する。遊星歯車機構は、軸線方向においてアクスルハウジングの外方に配置される。遊星歯車機構は、サンギアとプラネタリギアとリングギアとを有する。サンギアは、アクスル軸に固定される。プラネタリギアは、サンギアに噛み合う。リングギアは、プラネタリギアに噛み合う。ホイールハブは、径方向においてアクスルハウジングの外方に配置される。キャリアは、プラネタリギアを回転可能に支持する。キャリアは、軸線方向においてホイールハブの外方に配置される。キャリアは、遊星歯車機構を収容する。ホイールは、ホイールハブとキャリアとを収容する。ホイールは、ホイールハブとキャリアとに取り付けられる。第1の軸受は、ホイールハブの内周面とアクスルハウジングの外周面との間に配置される。リングギアハブは、軸線方向において第1の軸受の外方かつ径方向においてアクスルハウジングの外方に配置される。リングギアハブは、リングギアに連結される。第1固定部材は、軸線方向においてリングギアハブの外方に配置される。第1固定部材は、アクスルハウジングに固定される。第2固定部材は、軸線方向において第1の軸受の外方かつ径方向においてアクスルハウジングの外方に配置される。アクスルハウジングの外周面は、第1外周面と第2外周面と段部とを有する。第1外周面は、第1の軸受を支持する。第2外周面は、第1外周面の外径よりも小さな外径を有する。段部は、第1外周面と第2外周面との間に位置する。アクスルハウジングは、スプラインと逃げ溝とを有する。スプラインは、第2外周面に設けられる。逃げ溝は、第2外周面においてスプラインと段部との間に配置される。リングギアハブは、スプラインを介してアクスルハウジングと連結されている。第2固定部材は、逃げ溝に嵌合されている。第2固定部材の外周面は、径方向において第1の軸受の内周面よりも外方に位置している。
An axle device for a work vehicle according to an aspect of the present invention includes an axle shaft, an axle housing, a planetary gear mechanism, a wheel hub, a carrier, a wheel, a first bearing, a ring gear hub, and a first gear. A fixing member and a second fixing member are provided. The axle housing houses the axle shaft. The planetary gear mechanism is disposed outside the axle housing in the axial direction. The planetary gear mechanism has a sun gear, a planetary gear, and a ring gear. The sun gear is fixed to the axle shaft. The planetary gear meshes with the sun gear. The ring gear meshes with the planetary gear. The wheel hub is disposed outward of the axle housing in the radial direction. The carrier rotatably supports the planetary gear. The carrier is disposed outside the wheel hub in the axial direction. The carrier houses the planetary gear mechanism. The wheel houses a wheel hub and a carrier. The wheel is attached to the wheel hub and the carrier. The first bearing is disposed between the inner peripheral surface of the wheel hub and the outer peripheral surface of the axle housing. The ring gear hub is disposed outside the first bearing in the axial direction and outside the axle housing in the radial direction. The ring gear hub is connected to the ring gear. The first fixing member is disposed outside the ring gear hub in the axial direction. The first fixing member is fixed to the axle housing. The second fixing member is disposed outward of the first bearing in the axial direction and outward of the axle housing in the radial direction. The outer peripheral surface of the axle housing has a first outer peripheral surface, a second outer peripheral surface, and a stepped portion. The first outer peripheral surface supports the first bearing. The second outer peripheral surface has an outer diameter that is smaller than the outer diameter of the first outer peripheral surface. The step portion is located between the first outer peripheral surface and the second outer peripheral surface. The axle housing has a spline and a relief groove. The spline is provided on the second outer peripheral surface. The escape groove is disposed between the spline and the step portion on the second outer peripheral surface. The ring gear hub is connected to the axle housing via a spline. The second fixing member is fitted in the escape groove. The outer peripheral surface of the second fixing member is located outward from the inner peripheral surface of the first bearing in the radial direction.
この作業車両のアクスル装置では、第1固定部材によってリングギアハブと第1の軸受との軸線方向への移動が規制される。また、第2固定部材によって第1の軸受の軸線方向への移動が規制される。従って、第1固定部材と第2固定部材とによってホイールの保持力を向上させることができる。また、第1固定部材を大型化させる必要が無いため、アクスル装置の大型化を防止することができる。さらに、第2固定部材は、逃げ溝に嵌合されている。逃げ溝は、アクスルハウジングの外周面にスプラインを形成する加工を行うときに必要となる構成である。従って、第2固定部材を取り付けるための複雑な構造を追加することなく、逃げ溝を利用して第2固定部材を取り付けることができる。これにより、簡易な構造でホイールの保持力を向上させることができる。
In this work vehicle axle device, movement of the ring gear hub and the first bearing in the axial direction is restricted by the first fixing member. Further, the movement of the first bearing in the axial direction is restricted by the second fixing member. Therefore, the holding force of the wheel can be improved by the first fixing member and the second fixing member. Moreover, since it is not necessary to enlarge the first fixing member, it is possible to prevent the axle device from being enlarged. Further, the second fixing member is fitted in the escape groove. The relief groove is a configuration that is required when processing to form a spline on the outer peripheral surface of the axle housing. Therefore, the second fixing member can be attached using the escape groove without adding a complicated structure for attaching the second fixing member. Thereby, the holding force of a wheel can be improved with a simple structure.
好ましくは、第1の軸受の内周面の軸線方向における外方側の端部は、第2固定部材に近づく方向に向かって内径が大きくなる形状を有する。この場合、第1の軸受が軸線方向における外方に移動すると、第1の軸受が第2固定部材に乗り上げる。第1の軸受が第2固定部材に乗り上げると、第1の軸受の外周面がホイールハブの内周面に押し当てられる。これにより、ホイールハブの保持力を増大させることができる。
Preferably, the outer end in the axial direction of the inner peripheral surface of the first bearing has a shape in which the inner diameter increases in a direction approaching the second fixing member. In this case, when the first bearing moves outward in the axial direction, the first bearing rides on the second fixing member. When the first bearing rides on the second fixing member, the outer peripheral surface of the first bearing is pressed against the inner peripheral surface of the wheel hub. As a result, the holding force of the wheel hub can be increased.
好ましくは、第1の軸受は、外輪と、内輪と、転動体とを有する。転動体は、外輪と内輪との間に配置される円錐台形状を有する。リングギアハブは、内輪に接触している。この場合、第1の軸受が軸線方向における外方に移動すると、第1の軸受の内輪が第2固定部材に乗り上げる。第1の軸受の内輪が第2固定部材に乗り上げると、第1の軸受の外輪の外周面がホイールハブの内周面に押し当てられる。これにより、ホイールの保持力をさらに増大させることができる。
Preferably, the first bearing has an outer ring, an inner ring, and a rolling element. The rolling element has a truncated cone shape disposed between the outer ring and the inner ring. The ring gear hub is in contact with the inner ring. In this case, when the first bearing moves outward in the axial direction, the inner ring of the first bearing rides on the second fixing member. When the inner ring of the first bearing rides on the second fixing member, the outer peripheral surface of the outer ring of the first bearing is pressed against the inner peripheral surface of the wheel hub. Thereby, the holding force of the wheel can be further increased.
好ましくは、作業車両のアクスル装置は、第2の軸受をさらに備える。第2の軸受は、軸線方向において第1の軸受の内方かつホイールハブの内周面とアクスルハウジングの外周面との間に配置される。ホイールハブの内周面は、軸線方向において第1の軸受と第2の軸受との間に配置される突出部を有する。この場合、突出部によって第2の軸受の軸線方向における外方への移動が規制される。これにより、ホイールの保持力をさらに増大させることができる。
Preferably, the work vehicle axle device further includes a second bearing. The second bearing is disposed inward of the first bearing in the axial direction and between the inner peripheral surface of the wheel hub and the outer peripheral surface of the axle housing. The inner peripheral surface of the wheel hub has a protrusion that is disposed between the first bearing and the second bearing in the axial direction. In this case, the outward movement in the axial direction of the second bearing is restricted by the protrusion. Thereby, the holding force of the wheel can be further increased.
好ましくは、リングギアハブは、凹部を有する。凹部は、リングギアハブの軸線方向における内方の端部から軸線方向に凹んだ形状を有する。凹部内には、第2固定部材が配置される。この場合、第2固定部材が軸線方向にリングギアハブから離れて配置される場合と比べて、第2固定部材とリングギアハブとを軸線方向にコンパクトに配置することができる。これにより、アクスル装置を小型化することができる。
Preferably, the ring gear hub has a recess. The recess has a shape recessed in the axial direction from the inner end in the axial direction of the ring gear hub. A second fixing member is disposed in the recess. In this case, the second fixing member and the ring gear hub can be arranged more compactly in the axial direction than in the case where the second fixing member is arranged away from the ring gear hub in the axial direction. Thereby, an axle apparatus can be reduced in size.
本発明の一態様に係る作業車両は、上述したアクスル装置を備える。
A work vehicle according to an aspect of the present invention includes the above-described axle device.
本発明によれば、簡易な構造でホイールの保持力を向上させることができると共に、アクスル装置の大型化を防止することができる。
According to the present invention, the holding force of the wheel can be improved with a simple structure, and an increase in the size of the axle device can be prevented.
以下、本発明の一実施形態に係る作業車両について、図面を用いて説明する。図1は、作業車両1の斜視図である。本実施形態において作業車両1は、ホイールローダである。作業車両1は、車体2と、作業機3と、複数のタイヤ4と、キャブ5と、を備えている。キャブ5は、車体2上に載置されている。作業機3は、車体2の前部に取り付けられている。
Hereinafter, a work vehicle according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of the work vehicle 1. In the present embodiment, the work vehicle 1 is a wheel loader. The work vehicle 1 includes a vehicle body 2, a work implement 3, a plurality of tires 4, and a cab 5. The cab 5 is placed on the vehicle body 2. The work machine 3 is attached to the front portion of the vehicle body 2.
作業機3は、ブーム6とバケット7と油圧アクチュエータ8,9とを有する。ブーム6は、バケット7を持ち上げるための部材である。ブーム6は、上下方向に回動可能に車体2に取り付けられている。バケット7は、上下方向に回動可能にブーム6の先端部に取り付けられている。油圧アクチュエータ8,9は、ブームシリンダ8とバケットシリンダ9を有する。ブーム6は、ブームシリンダ8によって上下に回動する。バケット7は、バケットシリンダ9によって上下に回動する。なお、ブーム6には、バケット7に代えてフォークなどの他の作業具が装着可能である。
The work machine 3 includes a boom 6, a bucket 7, and hydraulic actuators 8 and 9. The boom 6 is a member for lifting the bucket 7. The boom 6 is attached to the vehicle body 2 so as to be rotatable in the vertical direction. The bucket 7 is attached to the tip of the boom 6 so as to be rotatable in the vertical direction. The hydraulic actuators 8 and 9 have a boom cylinder 8 and a bucket cylinder 9. The boom 6 is rotated up and down by a boom cylinder 8. The bucket 7 is rotated up and down by a bucket cylinder 9. The boom 6 can be mounted with other working tools such as forks instead of the bucket 7.
作業車両1は、エンジン11と油圧ポンプ12とを有する。エンジン11は、例えば、ディーゼル式のエンジンであり、エンジン11で発生した駆動力が、油圧ポンプ12に伝達される。エンジン11で発生した駆動力は、後述するアクスル装置を介してタイヤ4に伝達される。油圧ポンプ12は、エンジン11によって駆動されることにより作動油を吐出する。上述した油圧アクチュエータ8,9は、油圧ポンプ12から吐出された作動油によって駆動される。
The work vehicle 1 includes an engine 11 and a hydraulic pump 12. The engine 11 is, for example, a diesel engine, and the driving force generated by the engine 11 is transmitted to the hydraulic pump 12. The driving force generated by the engine 11 is transmitted to the tire 4 via an axle device described later. The hydraulic pump 12 discharges hydraulic oil when driven by the engine 11. The hydraulic actuators 8 and 9 described above are driven by hydraulic oil discharged from the hydraulic pump 12.
図2は、図1のII-II断面視におけるアクスル装置13の断面図である。図2に示すように、アクスル装置13は、アクスル軸21と、アクスルハウジング22と、遊星歯車機構23と、ホイールハブ24と、キャリア25と、カバー34と、ホイール26と、を備える。
FIG. 2 is a cross-sectional view of the axle device 13 in the II-II cross-sectional view of FIG. As shown in FIG. 2, the axle device 13 includes an axle shaft 21, an axle housing 22, a planetary gear mechanism 23, a wheel hub 24, a carrier 25, a cover 34, and a wheel 26.
アクスル軸21は、アクスル軸21の中心軸線が作業車両1の車幅方向に沿うように配置されている。アクスル軸21はエンジン11からの駆動力によって回転駆動される。アクスル軸21は、ユニバーサルジョイント27を有している。ユニバーサルジョイント27は、本体ハウジング28内に配置されている。なお、本実施形態において、軸線方向とは、アクスル軸21の中心軸線に平行な方向を意味する。また、軸線方向における内方とは、アクスル軸21の中心軸線に平行な方向において車体2の中心に向かう方向を意味する。軸線方向における外方とは、アクスル軸21の中心軸線に平行な方向において車体2の中心から離れる方向を意味する。径方向における内方とは、アクスル軸21の径方向に平行な方向においてアクスル軸21の中心軸線に向かう方向を意味する。径方向における外方とは、アクスル軸21の径方向に平行な方向においてアクスル軸21の中心軸線から離れる方向を意味する。
The axle shaft 21 is arranged so that the central axis of the axle shaft 21 is along the vehicle width direction of the work vehicle 1. The axle shaft 21 is rotationally driven by the driving force from the engine 11. The axle shaft 21 has a universal joint 27. The universal joint 27 is disposed in the main body housing 28. In the present embodiment, the axial direction means a direction parallel to the central axis of the axle shaft 21. Further, the inward in the axial direction means a direction toward the center of the vehicle body 2 in a direction parallel to the central axis of the axle shaft 21. The outward direction in the axial direction means a direction away from the center of the vehicle body 2 in a direction parallel to the central axis of the axle shaft 21. Inward in the radial direction means a direction toward the central axis of the axle shaft 21 in a direction parallel to the radial direction of the axle shaft 21. The outward direction in the radial direction means a direction away from the central axis of the axle shaft 21 in a direction parallel to the radial direction of the axle shaft 21.
アクスルハウジング22は、アクスル軸21を収容する。アクスルハウジング22は、本体ハウジング28に固定されている。アクスル軸21の端部は、アクスルハウジング22の端部から軸線方向における外方に突出している。
The axle housing 22 accommodates the axle shaft 21. The axle housing 22 is fixed to the main body housing 28. The end of the axle shaft 21 protrudes outward in the axial direction from the end of the axle housing 22.
遊星歯車機構23は、アクスルハウジング22の軸線方向における外方に配置される。遊星歯車機構23は、アクスル軸21に連結されており、アクスル軸21の回転をホイール26に減速して伝達する。遊星歯車機構23は、サンギア31と複数のプラネタリギア32とリングギア33とを有する。
The planetary gear mechanism 23 is disposed outward in the axial direction of the axle housing 22. The planetary gear mechanism 23 is connected to the axle shaft 21 and transmits the rotation of the axle shaft 21 to the wheel 26 at a reduced speed. The planetary gear mechanism 23 includes a sun gear 31, a plurality of planetary gears 32, and a ring gear 33.
サンギア31は、アクスル軸21と同心に配置されている。サンギア31は、アクスル軸21に固定されており、アクスル軸21と共に回転する。プラネタリギア32は、サンギア31の周囲に配置されており、サンギア31に噛み合う。プラネタリギア32は、サンギア31の周囲を公転可能に配置される。また、プラネタリギア32は、プラネタリギア32軸を中心に自転可能に配置される。
The sun gear 31 is disposed concentrically with the axle shaft 21. The sun gear 31 is fixed to the axle shaft 21 and rotates together with the axle shaft 21. The planetary gear 32 is disposed around the sun gear 31 and meshes with the sun gear 31. The planetary gear 32 is disposed so as to be able to revolve around the sun gear 31. The planetary gear 32 is disposed so as to be rotatable about the planetary gear 32 axis.
リングギア33は、プラネタリギア32に噛み合う。プラネタリギア32は、リングギア33に対して回転可能に配置される。キャリア25は、プラネタリギア32を回転可能に支持している。キャリア25は、プラネタリギア32の公転と共に回転する。カバー34は、キャリア25に固定されている。
The ring gear 33 meshes with the planetary gear 32. The planetary gear 32 is disposed so as to be rotatable with respect to the ring gear 33. The carrier 25 supports the planetary gear 32 in a rotatable manner. The carrier 25 rotates with the revolution of the planetary gear 32. The cover 34 is fixed to the carrier 25.
ホイールハブ24は、アクスルハウジング22の径方向における外方に配置される。キャリア25は、ホイールハブ24の軸線方向における外方に配置される。キャリア25は、遊星歯車機構23を収容する。ホイール26は、ホイールハブ24とキャリア25とを収容する。ホイール26は、ボルトなどの固定手段によって、ホイールハブ24とキャリア25とに取り付けられる。ホイール26には、上述したタイヤ4が取り付けられている。
The wheel hub 24 is disposed outward in the radial direction of the axle housing 22. The carrier 25 is disposed outward in the axial direction of the wheel hub 24. The carrier 25 accommodates the planetary gear mechanism 23. The wheel 26 accommodates the wheel hub 24 and the carrier 25. The wheel 26 is attached to the wheel hub 24 and the carrier 25 by fixing means such as bolts. The tire 26 described above is attached to the wheel 26.
図3は、図2の一部を拡大した図である。図3に示すように、アクスル装置13は、第1の軸受35と、第2の軸受36と、リングギアハブ37と、第1固定部材38と、第2固定部材39とを有する。
FIG. 3 is an enlarged view of a part of FIG. As shown in FIG. 3, the axle device 13 includes a first bearing 35, a second bearing 36, a ring gear hub 37, a first fixing member 38, and a second fixing member 39.
第1の軸受35は、ホイールハブ24の内周面とアクスルハウジング22の外周面との間に配置される。第2の軸受36は、ホイールハブ24の内周面とアクスルハウジング22の外周面との間に配置される。第1の軸受35は、いわゆる円錐ころ軸受である。第1の軸受35は、第1外輪351と、第1内輪352と、第1転動体353とを有する。第1転動体353は、第1外輪351と第1内輪352との間に配置されている。第1転動体353は、円錐台形状を有する。第1転動体353は、第1転動体353の中心軸線が、軸線方向における外方且つ径方向における外方に向かって傾斜するように配置されている。
The first bearing 35 is disposed between the inner peripheral surface of the wheel hub 24 and the outer peripheral surface of the axle housing 22. The second bearing 36 is disposed between the inner peripheral surface of the wheel hub 24 and the outer peripheral surface of the axle housing 22. The first bearing 35 is a so-called tapered roller bearing. The first bearing 35 includes a first outer ring 351, a first inner ring 352, and a first rolling element 353. The first rolling element 353 is disposed between the first outer ring 351 and the first inner ring 352. The first rolling element 353 has a truncated cone shape. The first rolling element 353 is arranged such that the central axis of the first rolling element 353 is inclined outward in the axial direction and outward in the radial direction.
第1の軸受35の内周面は、端部354を有する。端部354は、第1の軸受35の内周面において軸線方向における外方側の端部である。端部354は、軸線方向における外方に向かって内径が大きくなる形状を有する。すなわち、第1内輪352の端部354は、軸線方向における外方に向かって内径が大きくなる形状を有する。
The inner peripheral surface of the first bearing 35 has an end 354. The end portion 354 is an end portion on the outer side in the axial direction on the inner peripheral surface of the first bearing 35. The end 354 has a shape in which the inner diameter increases toward the outside in the axial direction. That is, the end portion 354 of the first inner ring 352 has a shape in which the inner diameter increases toward the outside in the axial direction.
第1の軸受35と第2の軸受36とは、軸線方向に並んで配置されている。第2の軸受36は、第1の軸受35の軸線方向における内方に配置されている。第2の軸受36は、ホイールハブ24の内周面とアクスルハウジング22の外周面との間に配置される。
The first bearing 35 and the second bearing 36 are arranged side by side in the axial direction. The second bearing 36 is disposed inward in the axial direction of the first bearing 35. The second bearing 36 is disposed between the inner peripheral surface of the wheel hub 24 and the outer peripheral surface of the axle housing 22.
第2の軸受36は、いわゆる円錐ころ軸受である。第2の軸受36は、第2外輪361と、第2内輪362と、第2転動体363とを有する。第2転動体363は、第2外輪361と第2内輪362との間に配置されている。第2転動体363は、円錐台形状を有する。第2転動体363は、中心軸線が、軸線方向における内方且つ径方向における外方に向かって傾斜するように配置されている。
The second bearing 36 is a so-called tapered roller bearing. The second bearing 36 includes a second outer ring 361, a second inner ring 362, and a second rolling element 363. The second rolling element 363 is disposed between the second outer ring 361 and the second inner ring 362. The second rolling element 363 has a truncated cone shape. The second rolling elements 363 are arranged such that the central axis is inclined inward in the axial direction and outward in the radial direction.
第2の軸受36の内周面は、端部364を有する。端部364は、第2の軸受36の内周面において軸線方向における内方側の端部である。端部364は、軸線方向における内方に向かって内径が大きくなる形状を有する。すなわち、第2内輪362の端部364は、軸線方向における内方に向かって内径が大きくなる形状を有する。
The inner peripheral surface of the second bearing 36 has an end 364. The end 364 is an end on the inner side in the axial direction on the inner peripheral surface of the second bearing 36. The end 364 has a shape with an inner diameter that increases inward in the axial direction. That is, the end portion 364 of the second inner ring 362 has a shape in which the inner diameter increases toward the inside in the axial direction.
リングギアハブ37は、第1の軸受35の軸線方向における外方に配置されている。リングギアハブ37は、アクスルハウジング22の径方向における外方に配置されている。リングギアハブ37は、リングギア33に連結される。リングギアハブ37は、第1内輪352に接触している。詳細には、リングギアハブ37は、第1内輪352の軸線方向における外方の端面355に接触している。
The ring gear hub 37 is disposed outward in the axial direction of the first bearing 35. The ring gear hub 37 is disposed outward in the radial direction of the axle housing 22. The ring gear hub 37 is connected to the ring gear 33. The ring gear hub 37 is in contact with the first inner ring 352. Specifically, the ring gear hub 37 is in contact with the outer end surface 355 in the axial direction of the first inner ring 352.
アクスルハウジング22の外周面は、第4外周面221と第1外周面222とを有する。第4外周面221は、オイルシール41を支持する。オイルシール41は、アクスルハウジング22とホイールハブ24との間に配置されている。オイルシール41は、アクスルハウジング22とホイールハブ24との隙間を封止する。
The outer peripheral surface of the axle housing 22 has a fourth outer peripheral surface 221 and a first outer peripheral surface 222. The fourth outer peripheral surface 221 supports the oil seal 41. The oil seal 41 is disposed between the axle housing 22 and the wheel hub 24. The oil seal 41 seals a gap between the axle housing 22 and the wheel hub 24.
第1外周面222は、第1の軸受35と第2の軸受36とを支持する。第1外周面222において第1の軸受35を支持する部分と第2の軸受36を支持する部分とは平坦に繋がっている。第1外周面222の直径は、第4外周面221の直径よりも小さい。このため、第4外周面221と第1外周面222との間には第1段部226が形成されている。第2の軸受36の第2内輪362は、第1段部226に接触している。
The first outer peripheral surface 222 supports the first bearing 35 and the second bearing 36. A portion supporting the first bearing 35 and a portion supporting the second bearing 36 on the first outer peripheral surface 222 are connected flatly. The diameter of the first outer peripheral surface 222 is smaller than the diameter of the fourth outer peripheral surface 221. For this reason, a first step 226 is formed between the fourth outer peripheral surface 221 and the first outer peripheral surface 222. The second inner ring 362 of the second bearing 36 is in contact with the first step portion 226.
なお、ホイールハブ24の内周面は、突出部241を有する。突出部241は、第1外周面222の径方向における外方に配置されている。突出部241は、軸線方向において第1の軸受35と第2の軸受36との間に配置される。突出部241は第1外輪351と第2外輪361との間に配置される。
Note that the inner peripheral surface of the wheel hub 24 has a protruding portion 241. The protruding portion 241 is disposed outward in the radial direction of the first outer peripheral surface 222. The projecting portion 241 is disposed between the first bearing 35 and the second bearing 36 in the axial direction. The protruding portion 241 is disposed between the first outer ring 351 and the second outer ring 361.
アクスルハウジング22の外周面は、第2外周面223と第2段部229とを有する。第2外周面223は、第1外周面222の軸線方向における外方に配置されている。第2外周面223の直径は、第1外周面222の直径よりも小さい。第2段部229は、第1階周面222と第2外周面223との間に位置する。第2外周面223は、スプライン227と逃げ溝228とを有する。
The outer peripheral surface of the axle housing 22 has a second outer peripheral surface 223 and a second step portion 229. The second outer peripheral surface 223 is disposed outward in the axial direction of the first outer peripheral surface 222. The diameter of the second outer peripheral surface 223 is smaller than the diameter of the first outer peripheral surface 222. The second step portion 229 is located between the first floor circumferential surface 222 and the second outer circumferential surface 223. The second outer peripheral surface 223 has a spline 227 and a relief groove 228.
スプライン227は、アクスルハウジング22の外周面において軸線方向に延びている。スプライン227は、第1外周面222の軸線方向における外方に配置されている。逃げ溝228は、アクスルハウジング22の外周面において周方向に延びている。逃げ溝228は、軸線方向においてスプライン227と第2段部229との間に配置される。すなわち、逃げ溝228は、軸線方向においてスプライン227と第1の軸受35との間に配置される。
The spline 227 extends in the axial direction on the outer peripheral surface of the axle housing 22. The spline 227 is disposed outward in the axial direction of the first outer peripheral surface 222. The escape groove 228 extends in the circumferential direction on the outer peripheral surface of the axle housing 22. The escape groove 228 is disposed between the spline 227 and the second step portion 229 in the axial direction. That is, the escape groove 228 is disposed between the spline 227 and the first bearing 35 in the axial direction.
アクスルハウジング22の外周面は、第3外周面224を有する。第3外周面224は、第2外周面223の軸線方向における外方に配置されている。第3外周面224の直径は、第2外周面223の直径よりも小さい。第3外周面224の外周面には、雄ネジが設けられている。
The outer peripheral surface of the axle housing 22 has a third outer peripheral surface 224. The third outer peripheral surface 224 is disposed outward in the axial direction of the second outer peripheral surface 223. The diameter of the third outer peripheral surface 224 is smaller than the diameter of the second outer peripheral surface 223. A male screw is provided on the outer peripheral surface of the third outer peripheral surface 224.
第1固定部材38は、ナット状の形状を有する。第1固定部材38は、リングギアハブ37の軸線方向における外方に配置される。第1固定部材38は、アクスルハウジング22に固定される。詳細には、第1固定部材38は、第3外周面224に固定される。第1固定部材38の内周面には、雌ネジが設けられている。第3外周面224の雄ネジが第1固定部材38の雌ネジに螺合することによって、第1固定部材38が、第3外周面224に固定される。
The first fixing member 38 has a nut shape. The first fixing member 38 is disposed outward in the axial direction of the ring gear hub 37. The first fixing member 38 is fixed to the axle housing 22. Specifically, the first fixing member 38 is fixed to the third outer peripheral surface 224. A female screw is provided on the inner peripheral surface of the first fixing member 38. The first fixing member 38 is fixed to the third outer peripheral surface 224 by the male screw of the third outer peripheral surface 224 being screwed into the female screw of the first fixing member 38.
リングギアハブ37は、第1凹部371を有する。第1凹部371は、リングギアハブ37の軸線方向における外方の端部から軸線方向に凹んだ形状を有する。第1凹部371内には、第1固定部材38が配置される。リングギアハブ37は、第1の軸受35と第1固定部材38との間に挟みこまれる。これにより、リングギアハブ37の軸線方向への移動が規制される。
The ring gear hub 37 has a first recess 371. The first recess 371 has a shape that is recessed in the axial direction from the outer end in the axial direction of the ring gear hub 37. A first fixing member 38 is disposed in the first recess 371. The ring gear hub 37 is sandwiched between the first bearing 35 and the first fixing member 38. Thereby, the movement of the ring gear hub 37 in the axial direction is restricted.
第2固定部材39は、例えばスナップリングである。第2固定部材39は、第1の軸受35の軸線方向における外方に配置されている。第2固定部材39は、アクスルハウジング22の径方向における外方に配置される。第2固定部材39は、逃げ溝228に嵌合されている。第2固定部材39の外周面は、第1の軸受35の内周面よりも径方向における外方に位置している。リングギアハブ37は、第2凹部372を有する。第2凹部372は、リングギアハブ37の軸線方向における内方の端部から軸線方向に凹んだ形状を有する。第2凹部372内には、第2固定部材39が配置される。
The second fixing member 39 is, for example, a snap ring. The second fixing member 39 is disposed outward in the axial direction of the first bearing 35. The second fixing member 39 is disposed outward in the radial direction of the axle housing 22. The second fixing member 39 is fitted in the escape groove 228. The outer peripheral surface of the second fixing member 39 is located outward in the radial direction from the inner peripheral surface of the first bearing 35. The ring gear hub 37 has a second recess 372. The second recess 372 has a shape that is recessed in the axial direction from the inner end of the ring gear hub 37 in the axial direction. A second fixing member 39 is disposed in the second recess 372.
本実施形態に係るアクスル装置13の特徴は次のとおりである。アクスル装置13では、第1固定部材38によって第1の軸受35とリングギアハブ37の軸線方向への移動が規制される。また、第2固定部材39によって第1の軸受35の軸線方向への移動が規制される。従って、第1固定部材38と第2固定部材39とによってホイール26の保持力を向上させることができる。また、第1固定部材38を大型化させる必要が無いため、アクスル装置13の大型化を防止することができる。さらに、第2固定部材39は、逃げ溝228に嵌合されている。逃げ溝228は、アクスルハウジング22の外周面にスプライン227を形成する加工を施すときに必要となる構成である。従って、第2固定部材39を取り付けるための複雑な構造を追加することなく、逃げ溝228を利用して第2固定部材39を取り付けることができる。これにより、簡易な構造でホイール26の保持力を向上させることができる。
The characteristics of the axle device 13 according to the present embodiment are as follows. In the axle device 13, movement of the first bearing 35 and the ring gear hub 37 in the axial direction is restricted by the first fixing member 38. Further, the movement of the first bearing 35 in the axial direction is restricted by the second fixing member 39. Therefore, the holding force of the wheel 26 can be improved by the first fixing member 38 and the second fixing member 39. Moreover, since it is not necessary to enlarge the 1st fixing member 38, the enlargement of the axle apparatus 13 can be prevented. Further, the second fixing member 39 is fitted in the escape groove 228. The escape groove 228 is a configuration that is required when processing for forming the spline 227 on the outer peripheral surface of the axle housing 22 is performed. Therefore, the second fixing member 39 can be attached using the escape groove 228 without adding a complicated structure for attaching the second fixing member 39. Thereby, the holding force of the wheel 26 can be improved with a simple structure.
第1の軸受35の内周面の端部354は、第2固定部材39に近づく方向に向かって内径が大きくなる形状を有する。このため、図4に示すように、第1の軸受35が軸線方向における外方に移動すると、第1内輪352が第2固定部材39に乗り上げる。第1内輪352が第2固定部材39に乗り上げると、第1外輪351がホイールハブ24の内周面に押し当てられる。これにより、ホイールハブ24の保持力を増大させることができる。
The end portion 354 of the inner peripheral surface of the first bearing 35 has a shape in which the inner diameter increases in a direction approaching the second fixing member 39. For this reason, as shown in FIG. 4, when the first bearing 35 moves outward in the axial direction, the first inner ring 352 rides on the second fixing member 39. When the first inner ring 352 rides on the second fixing member 39, the first outer ring 351 is pressed against the inner peripheral surface of the wheel hub 24. Thereby, the holding force of the wheel hub 24 can be increased.
ホイールハブ24の内周面の突出部241が、軸線方向において第1の軸受35と第2の軸受36との間に配置されている。このため、突出部241によって第2の軸受36の軸線方向における外方への移動が規制される。これにより、ホイール26の保持力をさらに増大させることができる。
The protrusion 241 on the inner peripheral surface of the wheel hub 24 is disposed between the first bearing 35 and the second bearing 36 in the axial direction. For this reason, the outward movement in the axial direction of the second bearing 36 is restricted by the protruding portion 241. Thereby, the holding force of the wheel 26 can be further increased.
第2凹部372内には、第2固定部材39が配置される。このため、第2固定部材39が軸線方向にリングギアハブ37から離れて配置される場合と比べて、第2固定部材39とリングギアハブ37とを軸線方向にコンパクトに配置することができる。これにより、アクスル装置13を小型化することができる。
In the second recess 372, the second fixing member 39 is disposed. For this reason, compared with the case where the 2nd fixing member 39 is arrange | positioned apart from the ring gear hub 37 in the axial direction, the 2nd fixing member 39 and the ring gear hub 37 can be arrange | positioned compactly in the axial direction. Thereby, the axle apparatus 13 can be reduced in size.
以上、本発明の一実施形態について説明したが、本発明は上記実施形態に限定されるものではなく、発明の要旨を逸脱しない範囲で種々の変更が可能である。
Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention.
本発明は、ホイールローダに限らず、バックホーローダ或いはダンプカーなどの他の種類の作業車両のアクスル装置に適用されてもよい。
The present invention is not limited to a wheel loader, and may be applied to an axle device of another type of work vehicle such as a backhoe loader or a dump truck.
第1固定部材は上述した形状に限られない。例えば、第1固定部材が板状であり、ボルトによってアクスル軸に固定されてもよい。第2固定部材は、スナップリングに限らず、逃げ溝に嵌合できる形状であれば他の形状であってもよい。
The first fixing member is not limited to the shape described above. For example, the first fixing member may have a plate shape and may be fixed to the axle shaft by a bolt. The second fixing member is not limited to the snap ring, and may have another shape as long as it can be fitted into the escape groove.
第1の軸受は、円錐ころ軸受に限らず、玉軸受、或いは、球面ころ軸受などの他の種類の軸受であってもよい。第2の軸受は、円錐ころ軸受に限らず、玉軸受、或いは、球面ころ軸受などの他の種類の軸受であってもよい。
The first bearing is not limited to the tapered roller bearing, but may be another type of bearing such as a ball bearing or a spherical roller bearing. The second bearing is not limited to the tapered roller bearing, but may be another type of bearing such as a ball bearing or a spherical roller bearing.
本発明によれば、アクスル装置において簡易な構造でホイールの保持力を向上させることができると共に、アクスル装置の大型化を防止することができる。
According to the present invention, the holding power of the wheel can be improved with a simple structure in the axle device, and the enlargement of the axle device can be prevented.
1 作業車両
21 アクスル軸
22 アクスルハウジング
23 遊星歯車機構
24 ホイールハブ
25 キャリア
26 ホイール
35 第1の軸受
36 第2の軸受
37 リングギアハブ
38 第1固定部材
39 第2固定部材
227 スプライン
228 逃げ溝
241 突出部
372 第2凹部
DESCRIPTION OF SYMBOLS 1Work vehicle 21 Axle shaft 22 Axle housing 23 Planetary gear mechanism 24 Wheel hub 25 Carrier 26 Wheel 35 First bearing 36 Second bearing 37 Ring gear hub 38 First fixing member 39 Second fixing member 227 Spline 228 Escape groove 241 Projection 372 Second recess
21 アクスル軸
22 アクスルハウジング
23 遊星歯車機構
24 ホイールハブ
25 キャリア
26 ホイール
35 第1の軸受
36 第2の軸受
37 リングギアハブ
38 第1固定部材
39 第2固定部材
227 スプライン
228 逃げ溝
241 突出部
372 第2凹部
DESCRIPTION OF SYMBOLS 1
Claims (6)
- アクスル軸と、
前記アクスル軸を収容するアクスルハウジングと、
前記アクスル軸に固定されるサンギアと、前記サンギアに噛み合うプラネタリギアと、前記プラネタリギアに噛み合うリングギアとを有し、前記アクスル軸の軸線方向において、前記アクスルハウジングの外方に配置される遊星歯車機構と、
前記アクスル軸の径方向において前記アクスルハウジングの外方に配置されるホイールハブと、
前記プラネタリギアを回転可能に支持し、前記軸線方向において前記ホイールハブの外方に配置され、前記遊星歯車機構を収容するキャリアと、
前記ホイールハブと前記キャリアとを収容し、前記ホイールハブと前記キャリアとに取り付けられるホイールと、
前記ホイールハブの内周面と前記アクスルハウジングの外周面との間に配置される第1の軸受と、
前記軸線方向において前記第1の軸受の外方かつ前記径方向において前記アクスルハウジングの外方に配置され、前記リングギアに連結されるリングギアハブと、
前記軸線方向において前記リングギアハブの外方に配置され、前記アクスルハウジングに固定される第1固定部材と、
前記軸線方向において前記第1の軸受の外方かつ前記径方向において前記アクスルハウジングの外方に配置される第2固定部材と、
を備え、
前記アクスルハウジングの外周面は、前記第1の軸受を支持する第1外周面と、前記第1外周面の外径よりも小さな外径を有する第2外周面と、前記第1外周面と前記第2外周面との間に位置する段部とを有し、
前記アクスルハウジングは、前記第2外周面に設けられるスプラインと、前記第2外周面において前記スプラインと前記段部との間に配置される逃げ溝とを有し、
前記リングギアハブは、前記スプラインを介して前記アクスルハウジングと連結されており、
前記第2固定部材は、前記逃げ溝に嵌合されており、
前記第2固定部材の外周面は、前記第1の軸受の内周面よりも前記径方向における外方に位置している、
作業車両のアクスル装置。 The axle shaft,
An axle housing that houses the axle shaft;
A planetary gear having a sun gear fixed to the axle shaft, a planetary gear meshing with the sun gear, and a ring gear meshing with the planetary gear, and disposed outside the axle housing in the axial direction of the axle shaft. Mechanism,
A wheel hub disposed outside the axle housing in a radial direction of the axle shaft;
A carrier that rotatably supports the planetary gear, is disposed outside the wheel hub in the axial direction, and houses the planetary gear mechanism;
A wheel that houses the wheel hub and the carrier and is attached to the wheel hub and the carrier;
A first bearing disposed between an inner peripheral surface of the wheel hub and an outer peripheral surface of the axle housing;
A ring gear hub that is disposed outside the first bearing in the axial direction and outside the axle housing in the radial direction and coupled to the ring gear;
A first fixing member disposed outside the ring gear hub in the axial direction and fixed to the axle housing;
A second fixing member disposed outside the first bearing in the axial direction and outside the axle housing in the radial direction;
With
The outer peripheral surface of the axle housing includes a first outer peripheral surface supporting the first bearing, a second outer peripheral surface having an outer diameter smaller than an outer diameter of the first outer peripheral surface, the first outer peripheral surface, A step portion positioned between the second outer peripheral surface,
The axle housing has a spline provided on the second outer peripheral surface, and a relief groove disposed between the spline and the step portion on the second outer peripheral surface,
The ring gear hub is connected to the axle housing via the spline;
The second fixing member is fitted in the escape groove,
The outer peripheral surface of the second fixing member is located outward in the radial direction from the inner peripheral surface of the first bearing.
Axle device for work vehicle. - 前記第1の軸受の内周面の前記軸線方向における外方側の端部は、前記第2固定部材に近づく方向に向かって内径が大きくなる形状を有する、
請求項1に記載の作業車両のアクスル装置。 An end on the outer side in the axial direction of the inner peripheral surface of the first bearing has a shape in which an inner diameter increases toward a direction approaching the second fixing member.
The axle device of the work vehicle according to claim 1. - 前記第1の軸受は、外輪と、内輪と、前記外輪と前記内輪との間に配置される円錐台形状の転動体とを有し、
前記リングギアハブは、前記内輪に接触している、
請求項2に記載の作業車両のアクスル装置。 The first bearing has an outer ring, an inner ring, and a frustoconical rolling element disposed between the outer ring and the inner ring,
The ring gear hub is in contact with the inner ring;
The work vehicle axle device according to claim 2. - 前記軸線方向において前記第1の軸受の内方かつ前記ホイールハブの内周面と前記アクスルハウジングの外周面との間に配置される第2の軸受をさらに備え、
前記ホイールハブの内周面は、前記軸線方向において前記第1の軸受と前記第2の軸受との間に配置される突出部を有する、
請求項1から3のいずれかに記載の作業車両のアクスル装置。 A second bearing disposed in the axial direction inward of the first bearing and between the inner peripheral surface of the wheel hub and the outer peripheral surface of the axle housing;
The inner peripheral surface of the wheel hub has a protruding portion disposed between the first bearing and the second bearing in the axial direction.
A work vehicle axle device according to any one of claims 1 to 3. - 前記リングギアハブは、凹部を有し、
前記凹部は、前記軸線方向における前記リングギアハブの内方の端部から前記軸線方向に凹んだ形状を有し、
前記第2固定部材は、前記凹部内に配置される。
請求項1から4のいずれかに記載の作業車両のアクスル装置。 The ring gear hub has a recess;
The concave portion has a shape recessed in the axial direction from an inner end of the ring gear hub in the axial direction,
The second fixing member is disposed in the recess.
The work vehicle axle device according to any one of claims 1 to 4. - 請求項1から請求項5のいずれかに記載のアクスル装置を備える作業車両。
A work vehicle comprising the axle device according to any one of claims 1 to 5.
Applications Claiming Priority (2)
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JP2013-071072 | 2013-03-29 | ||
JP2013071072A JP5764157B2 (en) | 2013-03-29 | 2013-03-29 | Axle device for work vehicle and work vehicle |
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WO2014155836A1 true WO2014155836A1 (en) | 2014-10-02 |
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Application Number | Title | Priority Date | Filing Date |
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PCT/JP2013/082571 WO2014155836A1 (en) | 2013-03-29 | 2013-12-04 | Axle device for working vehicle, and working vehicle |
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JP (1) | JP5764157B2 (en) |
WO (1) | WO2014155836A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59133328U (en) * | 1983-02-28 | 1984-09-06 | 株式会社小松製作所 | wheel drive |
JPH0348025A (en) * | 1989-07-17 | 1991-03-01 | Tochigi Fuji Ind Co Ltd | Viscous coupling |
JPH0656525U (en) * | 1993-01-18 | 1994-08-05 | 日産ディーゼル工業株式会社 | Synchro cone mounting structure |
JP2001500823A (en) * | 1997-07-18 | 2001-01-23 | ボルボ コンストラクション イクィプメント コンポネンツ アーベー | Planetary transmission for vehicles |
JP2007120649A (en) * | 2005-10-28 | 2007-05-17 | Komatsu Ltd | Axle device and working machine |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3619648B2 (en) * | 1997-01-29 | 2005-02-09 | トヨタ自動車株式会社 | Driving force transmission device |
US6098770A (en) * | 1999-03-19 | 2000-08-08 | Borgwarner Inc. | Clutch assembly having reaction force circuit |
-
2013
- 2013-03-29 JP JP2013071072A patent/JP5764157B2/en not_active Expired - Fee Related
- 2013-12-04 WO PCT/JP2013/082571 patent/WO2014155836A1/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59133328U (en) * | 1983-02-28 | 1984-09-06 | 株式会社小松製作所 | wheel drive |
JPH0348025A (en) * | 1989-07-17 | 1991-03-01 | Tochigi Fuji Ind Co Ltd | Viscous coupling |
JPH0656525U (en) * | 1993-01-18 | 1994-08-05 | 日産ディーゼル工業株式会社 | Synchro cone mounting structure |
JP2001500823A (en) * | 1997-07-18 | 2001-01-23 | ボルボ コンストラクション イクィプメント コンポネンツ アーベー | Planetary transmission for vehicles |
JP2007120649A (en) * | 2005-10-28 | 2007-05-17 | Komatsu Ltd | Axle device and working machine |
Also Published As
Publication number | Publication date |
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JP5764157B2 (en) | 2015-08-12 |
JP2014193694A (en) | 2014-10-09 |
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