CN215904249U

CN215904249U - Rear axle assembly and vehicle with same

Info

Publication number: CN215904249U
Application number: CN202121784725.6U
Authority: CN
Inventors: 姚成林
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2021-08-02
Filing date: 2021-08-02
Publication date: 2022-02-25
Anticipated expiration: 2031-08-02

Abstract

The utility model discloses a rear axle assembly, comprising: a rear axle housing; the rear main speed reducer is arranged in the middle of the rear axle housing, and the first oil duct is arranged in the rear main speed reducer; and the oil suction device is arranged on the rear main speed reducer, and at least one part of the oil suction device is positioned in the first oil duct. According to the rear axle assembly provided by the embodiment of the utility model, the bearing can be lubricated and radiated under the condition of requirement, and the situations of bearing ablation, vehicle damage and the like are avoided.

Description

Rear axle assembly and vehicle with same

Technical Field

The utility model relates to the technical field of vehicle manufacturing, in particular to a rear axle assembly and a vehicle with the same.

Background

In the related art, a rear axle assembly is widely used in off-road vehicles and other vehicles and is a key part for designing and manufacturing a rear drive of the vehicle. The rear axle assembly is applied to the vehicle industry, has the advantages of good reliability and durability, simple structure, high strength and the like, but when the vehicle faces bad and complicated roads, the bearing at the input end is lack of lubricating oil due to the fact that the elevation angle of the vehicle is too large, and bearing ablation can be caused.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to a rear axle assembly, so that the rear axle assembly can lubricate and dissipate heat of a bearing when needed, and avoid the occurrence of bearing ablation, vehicle damage, and the like.

In order to achieve the purpose, the technical scheme of the utility model is realized as follows:

a rear axle assembly, comprising: a rear axle housing; the rear main speed reducer is arranged in the middle of the rear axle housing, and the first oil duct is arranged in the rear main speed reducer; and the oil suction device is arranged on the rear main speed reducer, and at least one part of the oil suction device is positioned in the first oil duct.

According to the rear axle assembly provided by the embodiment of the utility model, the bearing can be lubricated and radiated under the condition of requirement, and the situations of bearing ablation, vehicle damage and the like are avoided.

In addition, the rear axle assembly according to the above embodiment of the present invention may also have the following additional technical features:

according to some embodiments of the present invention, the oil suction device includes a driving unit provided outside the rear final drive, and an oil suction unit provided in the first oil passage.

According to some embodiments of the utility model, the drive unit comprises a motor and a transmission assembly, the motor being connected to the oil suction unit via the transmission assembly.

According to some embodiments of the utility model, the transmission assembly comprises: the worm is connected with a motor shaft of the motor; and the worm wheel is in meshed connection with the worm and is connected with the oil suction unit.

According to some embodiments of the utility model, the oil suction unit is provided as a fan wheel provided with a plurality of spaced fan blades.

According to some embodiments of the utility model, the rear axle assembly further comprises a mounting bracket provided at an outer side of the rear final drive, the oil suction device being mounted to the mounting bracket.

According to some embodiments of the present invention, the first oil passage is disposed at a side portion of the rear final drive, an oil inlet end of the first oil passage is communicated with an inner cavity of the rear axle housing, and an oil outlet end of the first oil passage is connected to a bearing at an input end of the rear final drive.

According to some embodiments of the present invention, the first oil passage includes an oil passage section and an accommodating chamber, the oil suction unit is disposed in the accommodating chamber, a wall of the accommodating chamber has a connecting through hole, and the oil suction unit is connected to the driving unit through the connecting through hole.

According to some embodiments of the present invention, the rear main reducer further has a second oil passage, the second oil passage is disposed at the bottom of the rear main reducer, an oil inlet end of the second oil passage is communicated with the inner cavity of the rear axle housing, and an oil outlet end of the second oil passage is connected to a bearing at an input end of the rear main reducer.

Compared with the prior art, the rear axle assembly has the following advantages:

the rear axle assembly can lubricate and dissipate heat of the bearing under the condition of requirement, and avoids the situations of bearing ablation, vehicle damage and the like.

Another object of the present invention is to provide a vehicle, so that the vehicle can smoothly operate under various complicated and severe working conditions, and the poor bearing lubrication caused by the excessive elevation angle when the vehicle goes up a slope is avoided.

In order to achieve the purpose, the technical scheme of the utility model is realized as follows: the vehicle includes: a vehicle body; a rear axle assembly according to an embodiment of the first aspect. The vehicle and the rear axle assembly have the same advantages compared with the prior art, and the detailed description is omitted.

According to some embodiments of the utility model, the body is provided with a control switch, which is in communication with the motor of the rear axle assembly.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic structural diagram of a rear axle assembly according to an embodiment of the present invention.

Fig. 2 is an enlarged view at D in fig. 1.

FIG. 3 is a partial cross-sectional view of a rear axle assembly according to an embodiment of the present invention.

FIG. 4 is a cross-sectional view of a rear axle assembly according to an embodiment of the present invention.

FIG. 5 is a schematic structural diagram of a rear axle assembly according to an embodiment of the present invention.

Reference numerals: the rear axle assembly 1, the rear axle housing 100, the first oil channel 101, the connecting through hole 102, the second oil channel 103, the half shaft 200, the rear final drive 300, the oil suction device 400, the driving unit 410, the motor 411, the transmission assembly 412, the worm 4121, the turbine 4122, the oil suction unit 420, the fan blades 4201 and the mounting bracket 500.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

The present invention will be described in detail with reference to fig. 1 to 5 in conjunction with examples.

Referring to fig. 1 to 5, a rear axle assembly 1 according to an embodiment of the present invention includes a rear axle housing 100, a rear final drive 300, and an oil suction device 400, and the rear axle assembly 1 is a rear axle assembly 1 structure of a vehicle.

In some embodiments, a rear final drive 300 is provided in the middle of the rear axle housing 100, the rear final drive 300 having a first oil passage 101 therein. The oil suction device 400 is disposed in the rear final drive 300 and at least a portion of the oil suction device is located in the first oil passage 101.

Specifically, the bearings at the input end of the rear final drive 300 are used to fix the input shaft of the rear final drive 300 and support the rotation thereof, and lubrication and heat dissipation are achieved by the gear oil inside the cavity in the rear axle housing 100.

According to the rear axle assembly 1 of the embodiment of the utility model, the rear axle housing 100 is arranged, so that the mass of an automobile can be supported, the road surface reaction force and the reaction moment transmitted by wheels are borne, and the road surface reaction force and the reaction moment are transmitted to the automobile body through the suspension, the internal working environment can be protected, and the influence of the external environment on parts in the rear axle housing 100 can be prevented.

In addition, the axle shafts 200 are installed on both sides of the rear axle housing 100, and the length of the axle shafts 200 extends in the left-right direction (left-right direction as shown in fig. 1) for driving the rear wheels of the vehicle to rotate, thereby driving the vehicle to run. The rear final drive 300 is located in the middle of the rear axle housing 100, and the length of the rear final drive extends in the front-rear direction (the front-rear direction is shown in fig. 2, it should be understood that the above-mentioned direction is only limited for the convenience of description of the drawings, and the actual arrangement position and direction of the rear axle assembly 1 are not limited), so that the rotation speed of the half shafts 200 can be adjusted, the two half shafts 200 can rotate at different rotation speeds, the differential transmission of the vehicle can be realized, and the turning and other effects of the vehicle can be realized.

And, set up oil suction device 400 at rear axle housing 100, oil suction device 400 can work under the condition that the vehicle needs, can realize the transmission of fluid through first oil duct 101, initiatively carry rear main reducer 300 with fluid, avoid the bearing department of rear main reducer 300's input to cause lubricated badly because of lacking fluid, prevent to take place bearing ablation, rear axle assembly damage, make the vehicle lose power scheduling problem. Therefore, the driving reliability and stability of the vehicle are improved, and the vehicle can run on a steep slope or a complex road conveniently.

Therefore, the rear axle assembly 1 according to the embodiment of the utility model has the advantages that the bearings can be lubricated and radiated under the condition of need, and the situations of bearing ablation, vehicle damage and the like are avoided.

The rear axle assembly 1 according to the embodiment of the present invention is described below with reference to the drawings.

In some embodiments of the present invention, referring to fig. 1 to 5, a rear axle assembly 1 according to an embodiment of the present invention includes a rear axle housing 100, a rear final drive 300, and an oil suction device 400.

In some embodiments of the present invention, as shown in fig. 2 and 5, the oil suction device 400 includes a driving unit 410 and an oil suction unit 420, the driving unit 410 is disposed outside the rear final drive 300, and the oil suction unit 420 is disposed in the first oil passage 101. Therefore, the driving unit 410 can be used for providing power for the oil suction unit 420, so that oil can flow in the first oil passage 101, the driving oil can be conveniently driven to flow to the rear main speed reducer 300 for lubrication, and the driving unit 410 can be prevented from occupying the volume in the rear axle housing 100.

In some alternative embodiments, the driving unit 410 includes a motor 411 and a transmission assembly 412, and the motor 411 is connected to the oil suction unit through the transmission assembly 412. The motor drives the oil absorption unit to absorb oil conveniently.

In some embodiments, the transmission assembly 412 includes: a worm 4121, the worm 4121 being axially connected to the motor 411 of the motor 411; a worm wheel 4122, the worm wheel 4122 is engaged with the worm 4121 and connected with the oil suction unit 420. The worm 4121 axis extends in the front-rear direction, and the worm wheel 4122 axis extends in the left-right direction. The axis of the worm wheel 4122 is perpendicular to the axis of the worm 4121, and the axis of the worm wheel 4122 is on the same straight line with the axis of the oil suction unit 420. Therefore, the worm 4121 can be driven to rotate by the motor 411, the worm 4122 and the worm 4121 are in meshed transmission, the accuracy, the stability and the reliability of transmission are improved, the transmission ratio of the worm 4122 and the worm 4121 is large, the high-speed ratio of transmission is realized, and the transmission direction can be changed.

In some alternative embodiments, the oil suction unit 420 is provided as a fan-shaped wheel provided with a plurality of spaced fan blades 4201. The axial of sector wheel extends along the fore-and-aft direction, and flabellum 4201 is along the equal interval distribution of the circumference of sector wheel, and turbine 4122 drives sector wheel and turbine 4122 syntropy synchronous rotation when rotating, because the rotation of sector wheel forms suction, makes the fluid in the rear axle flow along first oil duct 101, reaches the bearing department of oil suction device 400's input directly, is favorable to the lubrication and the heat dissipation of the bearing of input. The fan blades 4201 are arranged on the sector wheel at equal intervals, which is beneficial to forming uniform power when the sector wheel rotates, and completing the action of oil absorption. The operation of the oil suction unit 420 is beneficial to the lubrication of the bearing at the input end of the vehicle under the continuous uphill or other working conditions with larger elevation angles. The condition that the rear axle assembly 1 is damaged and cannot be carried out due to the fact that the bearing at the input end is ablated due to insufficient lubrication is avoided, the service life of the rear axle assembly 1 is prolonged, and the safety of vehicle running is improved.

Specifically, the worm 4121 is provided with a spiral thread on the outer side, the worm wheel 4122 is provided with a driving gear, a shaft rod extends out of the middle of the worm wheel 4122, and the outer end of the shaft rod is provided with a sector wheel.

In some embodiments of the present invention, as shown in fig. 4, the rear axle assembly 1 further includes a mounting bracket 500, the mounting bracket 500 is disposed outside the rear final drive 300, and the oil suction device 400 is mounted to the mounting bracket. The installation setting of oil suction device 400 is convenient for like this, is favorable to improving the stability and the reliability of oil suction device 400 installation on rear final drive 300.

In some specific embodiments, the mounting bracket 500 is mounted to the left side of the rear final drive 300.

Further, the mounting portion for mounting the oil suction device 400 on the mounting bracket 500 is a protruding three-point opposite structure, and each mounting portion is provided with a mounting hole, so that the material is saved and the mounting stability of the oil suction device 400 is facilitated.

In some embodiments of the present invention, as shown in fig. 3, the first oil passage 101 is provided at a side portion of the rear final drive 300, an oil inlet end of the first oil passage 101 communicates with an inner cavity of the rear axle case 100, and an oil outlet end of the first oil passage 101 is connected to a bearing at an input end of the rear final drive 300. Thus, when the oil suction device 400 is used for oil suction operation, the oil supply of the rear axle assembly 1 is ensured.

Further, the first oil passage 101 is arranged on the rear main reducer 300, and can be formed by casting together when the rear main reducer 300 is manufactured, so that the process is simple, and the development cost is favorably reduced.

In some embodiments of the present invention, as shown in fig. 3, the first oil passage 101 includes an oil passage section and a receiving cavity, the oil suction unit 420 is disposed in the receiving cavity, a wall of the receiving cavity has the connection through hole 102, and the oil suction unit 420 is connected to the driving unit 410 through the connection through hole 102. Therefore, the oil suction unit 420 and the driving unit 410 can be ensured to be in transmission connection, the connecting through hole 102 is arranged, the driving unit 410 and the oil suction unit 420 can be separated in space, the rear axle assembly 1 can be conveniently sealed, and when a sector wheel formed by the oil suction unit 420 rotates in the containing cavity, oil in the first oil duct 101 flows in the oil duct section and cannot leak.

In some embodiments of the present invention, as shown in fig. 2, the rear final drive 300 further has a second oil passage 103, the second oil passage 103 is disposed at the bottom of the rear final drive 300, an oil inlet end of the second oil passage 103 is communicated with an inner cavity of the rear axle housing 100, and an oil outlet end of the second oil passage 103 is connected to a bearing at an input end of the rear final drive 300. Thus, when the vehicle runs normally and the oil suction device 400 is not needed to work, the bearing at the input end can be lubricated through the second oil duct 103, the working time of the oil suction device 400 is reduced, the electric quantity can be saved, and the complexity of customer operation is reduced.

Optionally, the rear axle assembly 1 is an integral rear drive axle, and the integral rear drive axle has the advantages of reliability, good durability, simple structure and high strength, and can cope with worse road conditions. According to another aspect of the present invention, a vehicle includes: a vehicle body and a rear axle assembly 1, wherein the rear axle assembly 1 is the rear axle assembly 1 according to the first aspect of the utility model.

In some embodiments of the present invention, the vehicle body is provided with a control switch, which is connected in communication with the motor 411 of the rear axle assembly 1. When a customer presses a switch, the motor 411 is communicated, the motor 411 rotates the worm 4122 and the worm 4121 in the belt transmission assembly 412 to drive the sector wheel of the oil suction device 400 to rotate, and the oil suction device 400 finishes oil suction in the first oil duct 101. The bearing lubrication device is beneficial to the customer to lubricate the bearing of the input end at any time when the customer needs the bearing lubrication device in the automobile driving process.

The oil suction device 400 works according to the following principle: after the control switch is pressed down, the motor 411 works to drive the worm 4121 to rotate, meanwhile, the turbine 4122 connected with the worm 4121 rotates, the fan-shaped wheel connected with the fan-shaped wheel is driven to rotate together through the fan-shaped wheel shaft rod, the fan-shaped wheel is arranged in the accommodating cavity of the first oil channel 101, and due to the rotating suction force, oil in the rear axle housing 100 can flow along the first oil channel 101 and directly reach the bearing of the input end, so that the effect of lubricating and radiating the bearing of the input end is achieved. It is to be understood here that the oil may be a lubricating fluid.

According to the vehicle provided by the embodiment of the utility model, because the rear axle assembly 1 provided by the embodiment of the utility model has the technical effects, the vehicle provided by the embodiment of the utility model also has the corresponding technical effects that the bearings at the input end can be lubricated and radiated under the condition of need, and the situations of bearing ablation, vehicle damage and the like are avoided.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A rear axle assembly (1), comprising:

a rear axle housing (100);

the rear main speed reducer (300) is arranged in the middle of the rear axle housing (100), and the first oil channel (101) is arranged in the rear main speed reducer (300);

the oil suction device (400) is arranged on the rear main speed reducer (300) and at least one part of the oil suction device (400) is located in the first oil channel (101).

2. The rear axle assembly (1) according to claim 1, wherein the oil suction device (400) includes a driving unit (410) and an oil suction unit (420), the driving unit (410) is provided outside the rear final drive (300), and the oil suction unit (420) is provided in the first oil passage (101).

3. The rear axle assembly (1) according to claim 2, characterized in that the drive unit (410) comprises an electric motor (411) and a transmission assembly (412), the electric motor (411) being connected with the oil suction unit (420) through the transmission assembly (412).

4. The rear axle assembly (1) according to claim 3, characterized in that the transmission assembly (412) comprises:

a worm (4121), wherein the worm (4121) is connected with a motor (411) shaft of the motor (411);

a turbine (4122), wherein the turbine (4122) is in meshed connection with the worm (4121) and is connected with the oil suction unit (420).

5. Rear axle assembly (1) according to claim 2, wherein the oil suction unit (420) is provided as a fan wheel provided with a plurality of spaced fan blades (4201).

6. The rear axle assembly (1) according to claim 1, further comprising a mounting bracket (500), wherein the mounting bracket (500) is provided at an outer side of the rear final drive (300), and the oil suction device (400) is mounted to the mounting bracket (500).

7. The rear axle assembly (1) according to claim 1, wherein the first oil channel (101) is arranged at the side part of the rear main reducer (300), the oil inlet end of the first oil channel (101) is communicated with the inner cavity of the rear axle housing (100), and the oil outlet end of the first oil channel (101) is connected with the bearing at the input end of the rear main reducer (300).

8. The rear axle assembly (1) according to claim 2, characterized in that the first oil duct (101) comprises an oil duct section and a receiving cavity, the oil suction unit (420) is arranged in the receiving cavity, the wall of the receiving cavity is provided with a connecting through hole (102), and the oil suction unit (420) is connected with the driving unit (410) through the connecting through hole (102).

9. The rear axle assembly (1) according to claim 1, wherein the rear main reducer (300) is further provided with a second oil channel (103), the second oil channel (103) is arranged at the bottom of the rear main reducer (300), the oil inlet end of the second oil channel (103) is communicated with the inner cavity of the rear axle housing (100), and the oil outlet end of the second oil channel (103) is connected with a bearing at the input end of the rear main reducer (300).

10. A vehicle, characterized by comprising:

a vehicle body;

a rear axle assembly (1), the rear axle assembly (1) being a rear axle assembly (1) according to any one of claims 1-9.

11. Vehicle according to claim 10, characterized in that the body is provided with a control switch which is in communication connection with an electric motor (411) of the rear axle assembly (1).