CN220031620U - Driving double-axle assembly suitable for off-highway vehicle - Google Patents

Driving double-axle assembly suitable for off-highway vehicle Download PDF

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Publication number
CN220031620U
CN220031620U CN202320103470.5U CN202320103470U CN220031620U CN 220031620 U CN220031620 U CN 220031620U CN 202320103470 U CN202320103470 U CN 202320103470U CN 220031620 U CN220031620 U CN 220031620U
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China
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assembly
rod support
thrust rod
axle
axle housing
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CN202320103470.5U
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Chinese (zh)
Inventor
郭克刚
刘琪
李平平
朱秋宁
曹艳子
党鑫凯
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Shaanxi Hande Axle Co Ltd
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Shaanxi Hande Axle Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/80Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/86Optimisation of rolling resistance, e.g. weight reduction 

Abstract

The utility model provides a driving duplex axle assembly suitable for an off-highway vehicle, which comprises a driving center axle, wherein the driving center axle comprises a center axle housing assembly, a center axle main speed reducer assembly, a brake assembly and a wheel rim assembly, the center axle housing assembly comprises a center axle housing body, an upper thrust rod support, a plate spring support and a lower bracket, the upper thrust rod support is fixedly connected with the upper end face of the center axle housing body, the plate spring support is fixedly connected with backing plates at two ends of the center axle housing body, the position opposite to the backing plates is fixedly connected with the lower bracket, the center axle main reducing assembly comprises a center axle main reducing connecting flange, a threaded fastener and a reinforcing connecting fastener, the center axle main reducing assembly is connected with the center axle housing assembly through the threaded fastener on the center axle main reducing connecting flange, and a reference circle diameter reinforcing connecting fastener with a reference circle diameter larger than the threaded fastener is arranged right below the center axle main reducing connecting flange. The defect of insufficient bearing capacity of the intermediate axle of the drive axle assembly of the off-highway vehicle in the prior art can be overcome.

Description

Driving double-axle assembly suitable for off-highway vehicle
Technical Field
The utility model relates to the technical field of double-axle assemblies, in particular to a driving double-axle assembly suitable for off-highway vehicles.
Background
At present, the large-scale development of off-highway vehicles becomes a main development trend, the conventional drive axle can not meet the off-highway market demand, and the special drive axle designed for the off-highway market continuously develops towards the directions of large bearing, high torque, forced movement and safety and reliability. The drive axle assembly is used as one of key parts of a vehicle running system, not only is the torque output by an engine transmitted, but also various complex moments such as vertical force, transverse force and the like are born by a road surface and a frame in the running process of the vehicle, so that the requirements on the running reliability and the running safety of the drive axle assembly are higher. In the driving double-axle assembly of the off-highway vehicle, the bearing weight of the driving intermediate axle is the largest, and the stress is the most complex and variable, so that how to improve the bearing capacity of the intermediate axle is urgent.
Disclosure of Invention
Therefore, the utility model provides the driving duplex axle assembly suitable for the off-highway vehicle, which can overcome the defect of insufficient bearing strength of a driving center axle of the driving axle assembly of the off-highway vehicle in the prior art.
In order to solve the problems, the utility model provides a driving duplex axle assembly suitable for an off-highway vehicle, which comprises a driving center axle, wherein the driving center axle comprises a center axle housing assembly, a center axle main speed reducer assembly, a brake assembly and a wheel side assembly, the center axle housing assembly comprises a center axle housing body, an upper thrust rod support, a plate spring support and a lower bracket, the upper thrust rod support is fixedly connected with the upper end face of the center axle housing body, the plate spring support is fixedly connected with base plates at two ends of the center axle housing body, the lower bracket is fixedly connected to the center axle housing body at a position opposite to the base plates, the center axle main speed reducer assembly comprises a center axle main speed reducer connecting flange, a threaded fastener and a reinforcing connecting fastener, the center axle main speed reducer assembly is connected with the center axle housing assembly through the threaded fastener on the center axle main speed reducer connecting flange, the reinforcing connecting fastener is arranged right below the center axle main speed reducer connecting flange, and the pitch circle diameter of the reinforcing connecting fastener is larger than that of the threaded fastener.
In some embodiments, the drive tandem axle assembly of the off-highway vehicle further comprises a drive rear axle comprising a rear axle housing assembly, a rear axle main reducer assembly, the brake assembly and the wheel rim assembly, the rear axle housing assembly comprises a rear axle housing body, an upper thrust rod support, a leaf spring support and a lower support, the rear axle main reducer assembly comprises a rear axle main reducer connecting flange, and the rear axle main reducer assembly is connected with the rear axle housing assembly through threaded fasteners arranged on the rear axle main reducer connecting flange.
In some embodiments, the brake assembly comprises a brake drum and brake shoe assembly, the wheel-side assembly comprises a wheel-side reducer assembly and a hub assembly, and the brake assembly is a drum brake, or a disc brake, or a wet brake.
In some embodiments, the inner diameter of the brake drum and the outer diameter of the brake shoe assembly are both 500-600mm, and the friction surface width of the brake drum and the brake shoe assembly is 200-300mm.
In some embodiments, the hub reduction assembly is a planetary spur gear reduction structure with a speed ratio of 3.5-4.5.
In some embodiments, the bearings used in the hub assembly are tapered roller bearings, which are divided into an outer bearing having an outer diameter of 225-235mm and an inner bearing having an outer diameter of 245-255mm.
In some embodiments, the middle axle housing body and the rear axle housing body are of a cast split structure, the middle axle housing body and the rear axle housing body comprise a middle axle cast axle housing middle section, a rear axle cast axle housing middle section and a shaft head, the middle axle cast axle housing middle section, the rear axle cast axle housing middle section and the shaft head are welded into an integral structure, and the shaft head is matched with the brake assembly.
In some embodiments, the threaded fasteners are uniformly distributed on the main reduction connecting flange of the middle axle or the main reduction connecting flange of the rear axle, and the reference circle diameters of the threaded fasteners are 455-475mm.
In some embodiments, the thrust rod support includes integrated into one piece's straight thrust rod support, transverse thrust rod support and base, the straight thrust rod support with transverse thrust rod support is located same side of base, one side of thrust rod support installation straight thrust rod is thrust rod support front side, the straight thrust rod support include along first direction interval set up in straight thrust rod support arm A and straight thrust rod support arm B on the base, transverse thrust rod support include along transverse thrust rod support arm A and transverse thrust rod support arm B that the second direction interval set up, just transverse thrust rod support arm A with transverse thrust rod support arm B passes through the strengthening rib and connects, transverse thrust rod support arm A set up in on the base, transverse thrust rod support arm B unsettled the setting, first direction with the second direction is the contained angle of predetermineeing, thrust rod support rear side be provided with the intercommunication straight thrust rod support and transverse thrust rod support's through-type strengthening rib, through-type strengthening rib partially is located at most on the base.
In some embodiments, the leaf spring support is a split structure comprising a support body and a wear block fixedly connected by bolts.
The driving duplex axle assembly suitable for the off-highway vehicle, provided by the utility model, has the advantages that the bearing capacity, the transmission performance and the running reliability of the axle are fully improved, and meanwhile, the corresponding part assembly can be selected and installed according to the whole vehicle requirement, so that the axle performance is effectively ensured to meet the diversified requirements of the market.
The utility model has the beneficial effects that:
1. the axle bearing capacity is stronger: the axle housing assembly adopts a cast split structure, so that the bearing capacity is greatly improved, and meanwhile, the connecting flange part of the main speed reducer of the middle axle is provided with a reinforced connecting fastener, so that the connecting strength of the main speed reducer is effectively ensured, and the vibration impact bearing performance of the driving middle axle is better;
2. the axle transmission performance is better: the wheel edge adopts a planetary spur gear speed reduction structure, the transmission speed ratio is large, and the transmission reliability is higher;
3. the axle braking performance is better: the large-section brake is adopted, so that the braking moment is larger;
4. the axle adaptability is stronger: the brake type and the suspension part structure can be matched and installed according to the requirement according to the change of the using condition;
5. the maintenance of the axle is more convenient: the thrust bracket is designed in an integrated manner and the plate spring support is designed in a split manner, and the targeted design is carried out according to the use characteristics of different parts, so that the maintenance procedure of the axle is effectively simplified.
Drawings
FIG. 1 is a schematic illustration of a center bridge assembly of a drive tandem axle assembly for an off-highway vehicle according to an embodiment of the present utility model;
FIG. 2 is a schematic illustration of a rear axle assembly of a drive tandem axle assembly for an off-highway vehicle according to an embodiment of the present utility model;
FIG. 3 is a schematic illustration of a center axle housing assembly of a drive tandem axle assembly for an off-highway vehicle according to an embodiment of the present utility model;
FIG. 4 is a schematic illustration of a rear axle housing assembly of a drive tandem axle assembly for an off-highway vehicle in accordance with an embodiment of the present utility model;
FIG. 5 is a schematic diagram of an upper track bar carrier for a drive tandem axle assembly for an off-highway vehicle according to an embodiment of the present utility model;
FIG. 6 is a schematic diagram of a spring sled assembly for an off-highway vehicle according to an embodiment of the present utility model;
FIG. 7 is a schematic structural view of a hub assembly of a drive tandem axle assembly for an off-highway vehicle according to an embodiment of the present utility model.
The reference numerals are expressed as:
1A, a middle axle housing assembly; 1B, a rear axle housing assembly; 11A, a middle axle housing body; 11B, a rear axle housing body; 111A, middle bridge axle housing middle section; 111B, the middle section of the rear axle housing; 112. a shaft head; 12. an upper thrust rod support; 121. a support is pushed directly; 122. a support is pushed horizontally; 1221. reinforcing ribs; 13 leaf spring support; 131. a support body; 132. a wear block; 14. a lower bracket; 2A, a middle axle main speed reducer assembly; 2B, a rear axle main speed reducer assembly; 21A, a connecting flange of a main speed reducer of a middle bridge; 21B, a rear axle main reducer connecting flange; 22. a threaded fastener; 23. reinforcing the connecting fastener; 3. a brake assembly; 31. a brake drum; 32. a brake shoe assembly; 4. a wheel rim assembly; 41. wheel-side reducer assembly; 42. a hub assembly; 421. an outer bearing; 422. an inner bearing; 423. wheel bolts.
Detailed Description
Referring to fig. 1 to 7 in combination, according to an embodiment of the present utility model, there is provided a drive tandem axle assembly suitable for an off-highway vehicle, including a drive center axle, the drive center axle includes a center axle housing assembly 1A, a center axle final drive assembly 2A, a brake assembly 3, and a wheel rim assembly 4, the center axle housing assembly 1A includes a center axle housing body 11A, an upper thrust rod support 12, a leaf spring support 13, and a lower bracket 14, the upper thrust rod support 12 is fixedly connected with an upper end surface of the center axle housing body 11A, the leaf spring support 13 is fixedly connected with backing plates at two ends of the center axle housing body 11A, the lower bracket 14 is fixedly connected to a position opposite to the backing plates on the center axle housing body 11A, the center axle final drive assembly 2A includes a center axle final drive flange 21A, a threaded fastener 22, and a reinforcing connection fastener 23, the center axle final drive assembly 2A is fixedly connected with the center axle housing body 11A through the threaded fastener 22 on the center axle final drive flange 21A, the center axle final drive flange 2A is provided with a threaded fastener 22 and a reinforcing fastener 23, and the pitch circle diameter of the center axle housing assembly is provided with the reinforcing fastener 23.
In a specific embodiment, the drive duplex axle assembly suitable for off-highway vehicles further comprises a drive rear axle, wherein the drive rear axle comprises a rear axle housing assembly 1B, a rear axle main reducer assembly 2B, a brake assembly 3 and a wheel rim assembly 4, the rear axle housing assembly 1B comprises a rear axle housing body 11B, an upper thrust rod support 12, a plate spring support 13 and a lower support 14, the rear axle main reducer assembly 2B comprises a rear axle main reducer connecting flange 21B, and the rear axle main reducer assembly 2B is connected with the rear axle housing assembly 11B through a threaded fastener 22 arranged on the rear axle main reducer connecting flange 21B.
In a specific embodiment, the brake assembly 3 includes a brake drum 31 and a brake shoe assembly 32, the wheel-side assembly 4 includes a wheel-side reducer assembly 41 and a hub assembly 42, and the brake 3 is a drum brake, or a disc brake, or a wet brake.
In a specific embodiment, the inner diameter of the brake drum 31 and the outer diameter of the brake shoe assembly 32 are both 500-600mm, and the friction surface width of the brake drum 31 and the brake shoe assembly 32 is 200-300mm.
In a specific embodiment, the hub reduction gear assembly 41 is a planetary spur gear reduction structure, and the speed ratio is 3.5-4.5.
In a specific embodiment, the bearings used in the hub assembly 42 are tapered roller bearings, which are divided into an outer bearing 421 and an inner bearing 422, the outer bearing 421 having an outer diameter of 225-235mm, and the inner bearing 422 having an outer diameter of 245-255mm.
Specifically, the wheel distance of the axle is 2550-2650mm.
Specifically, the wheel bolts (423) of the hub assembly have a pitch circle diameter of 400-450mm.
In a specific embodiment, the middle axle housing body 11A and the rear axle housing body 11B are all of a cast split structure, the middle axle housing body 11A and the rear axle housing body 11B each include a middle axle cast axle housing middle section 111A, a rear axle cast axle housing middle section 111B and a shaft head 112, the middle axle cast axle housing middle section 111A, the rear axle cast axle housing middle section 111B and the shaft head 112 are welded into an integral structure, and the shaft head 112 is adapted to the brake assembly 3.
In a specific embodiment, the threaded fasteners 22 are uniformly distributed on the main reduction connecting flange 21A of the intermediate axle or the main reduction connecting flange 21B of the rear axle, and the reference circle diameters of the threaded fasteners are 455-475mm.
In a specific embodiment, the thrust rod support comprises a straight thrust rod support 121, a transverse thrust rod support 122 and a base which are integrally formed, the straight thrust rod support 121 and the transverse thrust rod support 122 are located on the same side of the base, one side of the thrust rod support, where the straight thrust rod support is installed, is the front side of the thrust rod support, the straight thrust rod support 121 comprises a straight thrust rod support vertical arm A and a straight thrust rod support vertical arm B which are arranged on the base at intervals along a first direction, the transverse thrust rod support 122 comprises a transverse thrust rod support vertical arm A and a transverse thrust rod support cantilever B which are arranged at intervals along a second direction, the transverse thrust rod support vertical arm A and the transverse thrust rod support cantilever B are connected through a reinforcing rib 1221, the transverse thrust rod support vertical arm A is arranged on the base, the first direction and the second direction are arranged at preset included angles, the rear side of the thrust rod support is provided with a through thrust rod support vertical arm A and a through type support 121, and the through type support cantilever B is located on the reinforcing rib 122.
In a specific embodiment, the leaf spring support 13 is a split structure, and includes a support body 131 and a wear block 132 fixedly connected by bolts.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model. The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.

Claims (10)

1. The utility model provides a drive duplex axle assembly suitable for off-highway vehicle, its characterized in that, includes the drive center bridge, the drive center bridge includes center bridge axle housing assembly (1A), center bridge main reducer assembly (2A), stopper assembly (3) and round limit assembly (4), center bridge axle housing assembly (1A) include center bridge axle housing body (11A), go up thrusting rod support (12), leaf spring support (13) and lower carriage (14), go up thrusting rod support (12) with the up end fixed connection of center bridge axle housing body (11A), leaf spring support (13) with the backing plate fixed connection at center bridge axle housing body (11A) both ends center bridge axle housing body (11A) go up with the position fixed connection that the backing plate is relative has on center bridge axle housing body (11A) lower carriage (14), center bridge main assembly (2A) include center bridge main and subtract flange (21A), threaded fastener (22) and strengthen connecting piece (23), center bridge main assembly (2A) through the major diameter of major bridge (21A) is subtracted on connecting fastener (21A) and the major diameter of connecting piece (23) is connected with the major diameter of major diameter (23) center bridge (23).
2. The drive tandem axle assembly for an off-highway vehicle according to claim 1, further comprising a drive rear axle comprising a rear axle housing assembly (1B), a rear axle final drive assembly (2B), the brake assembly (3) and the wheel rim assembly (4), the rear axle housing assembly (1B) comprising a rear axle housing body (11B), the upper thrust rod support (12), the leaf spring support (13) and the lower support (14), the rear axle final drive assembly (2B) comprising a rear axle final drive flange (21B), the rear axle final drive assembly (2B) being connected to the rear axle housing assembly (11B) by threaded fasteners (22) provided on the rear axle final drive flange (21B).
3. Drive tandem axle assembly suitable for off-highway vehicles according to claim 2, characterized in that the brake assembly (3) comprises a brake drum (31) and a brake shoe assembly (32), the wheel-side assembly (4) comprises a wheel-side reducer assembly (41) and a hub assembly (42), and the brake assembly (3) is a drum brake, or a disc brake, or a wet brake.
4. A drive tandem axle assembly for off-highway vehicles according to claim 3, wherein the inner diameter of said brake drum (31) and the outer diameter of said brake shoe assembly (32) are both 500-600mm, and the width of the friction surface of said brake drum (31) and said brake shoe assembly (32) is 200-300mm.
5. A drive tandem axle assembly for off-highway vehicles according to claim 3, wherein said wheel-side reducer assembly (41) is of planetary spur gear reduction construction with a speed ratio of 3.5-4.5.
6. A drive double axle assembly for off-highway vehicles according to claim 3, wherein the bearings used in the hub assembly (42) are tapered roller bearings, which are divided into an outer bearing (421) and an inner bearing (422), the outer diameter of the outer bearing (421) being 225-235mm, and the outer diameter of the inner bearing (422) being 245-255mm.
7. The drive duplex axle assembly suitable for off-highway vehicles according to claim 2, wherein the center axle housing body (11A) and the rear axle housing body (11B) are of cast split structures, the center axle housing body (11A) and the rear axle housing body (11B) each comprise a center axle cast axle housing middle section (111A), a rear axle cast axle housing middle section (111B) and a shaft head (112), the center axle cast axle housing middle section (111A), the rear axle cast axle housing middle section (111B) and the shaft head (112) are welded into an integral structure, and the shaft head (112) is adapted to the brake assembly (3).
8. The drive tandem axle assembly for off-highway vehicles according to claim 2, wherein the threaded fasteners (22) are uniformly distributed on the main reduction connecting flange (21A) of the middle axle or the main reduction connecting flange (21B) of the rear axle, and the reference circle diameters thereof are 455-475mm.
9. The drive duplex axle assembly suitable for off-highway vehicles according to claim 1, wherein the thrust rod support comprises an integrally formed straight thrust rod support (121), a transverse thrust rod support (122) and a base, the straight thrust rod support (121) and the transverse thrust rod support (122) are located on the same side of the base, one side of the thrust rod support, on which the straight thrust rod is mounted, is a thrust rod support front side, the straight thrust rod support (121) comprises a straight thrust rod support vertical arm a and a straight thrust rod support vertical arm B which are arranged on the base at intervals along a first direction, the transverse thrust rod support (122) comprises a transverse thrust rod support vertical arm a and a transverse thrust rod support cantilever B which are arranged at intervals along a second direction, the transverse thrust rod support vertical arm a and the transverse thrust rod support cantilever B are connected through a reinforcing rib (1), the transverse thrust rod support vertical arm a is arranged on the base, the transverse thrust rod support cantilever B is suspended, the first direction and the second direction are arranged on the straight thrust rod support vertical arm a and the transverse thrust rod support vertical arm B at intervals along a preset direction, and the transverse thrust rod support vertical arm B is communicated with the reinforcing rod support (122) through the reinforcing rib (121).
10. The drive tandem axle assembly for off-highway vehicles according to claim 1, wherein said leaf spring support (13) is of a split construction comprising a support body (131) and a wear block (132) fixedly connected by means of bolts.
CN202320103470.5U 2023-02-03 2023-02-03 Driving double-axle assembly suitable for off-highway vehicle Active CN220031620U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202320103470.5U CN220031620U (en) 2023-02-03 2023-02-03 Driving double-axle assembly suitable for off-highway vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202320103470.5U CN220031620U (en) 2023-02-03 2023-02-03 Driving double-axle assembly suitable for off-highway vehicle

Publications (1)

Publication Number Publication Date
CN220031620U true CN220031620U (en) 2023-11-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202320103470.5U Active CN220031620U (en) 2023-02-03 2023-02-03 Driving double-axle assembly suitable for off-highway vehicle

Country Status (1)

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