Drive axle motor, drive axle device and vehicle

Abstract

The utility model relates to new energy vehicle technical field, concretely refers to a kind of drive axle motor, drive axle device and car, a kind of drive axle motor, including axle housing, support portion is equipped in axle housing, left drive shaft, right drive shaft are respectively fixedly connected with support portion via bearing, left drive shaft left end is left drive end, right drive shaft right end is right drive end, a kind of drive axle device, including above-mentioned the drive axle motor of described, left motor rotor is fixedly sleeved on left drive shaft, left motor stator is equipped on left motor rotor outside, right motor rotor is fixedly sleeved on right drive shaft, right motor stator is equipped on right motor rotor outside, left speed reducer is equipped on left drive shaft, right speed reducer is equipped on right drive shaft, a kind of car, including automobile chassis and control system, the frame of automobile chassis is equipped with above-mentioned the drive axle device of described, leaf spring both ends of shock-absorbing mechanism are respectively hinged with frame, the utility model axial space is small, suitable for small vehicle.

Description

Technical Field

[0001] This utility model relates to the field of new energy vehicle technology, specifically to a drive axle motor, drive axle device, and vehicle. Background Technology

[0002] New energy vehicles are now widely used in various industries, and the electric drive axle, as a core component of new energy vehicles, has significant implications for vehicle performance in terms of its performance and structural design. Currently, the most commonly used structure is the parallel shaft type, where the motor output shaft is arranged parallel to the axle shaft and connected to it via a reduction gearbox, as shown in Chinese patent CN 119749206. A discloses a distributed drive system configuration for an electric vehicle, comprising a drive motor, wheel-side reducers, brake discs, brake calipers, a pressure regulator, a master cylinder, a brake controller, a filter, and a connecting flange. The drive motor is fastened to the vehicle body via the flange. The wheel-side reducers are connected to the drive wheels via the connecting flange. The wheel-side reducers consist of a single-stage planetary reduction mechanism, meshing with planetary gears through a sun gear shaft and connecting to a gear ring fixed to the drive motor. The drive motor is directly connected to the input end of the wheel-side reducer, achieving speed reduction and torque increase through the single-stage planetary gear reduction. Torque is transmitted from the drive motor to the wheel-side reducer via the sun gear shaft. The wheel-side reducer maintains a constant transmission ratio, increasing the torque transmitted from the drive motor to the drive wheels at a fixed ratio and correspondingly reducing the speed of the drive wheels. The drive motor converts electrical energy into mechanical energy, which is then transmitted to the drive wheels via the wheel-side reducer, achieving stable torque and speed output from the drive motor to the drive wheels. The brake disc is fixed to the housing of the wheel-side reducer, and the brake calipers are connected via bolts. Fixed to the housing of the drive motor, the vehicle's service and parking braking functions are achieved through the brake disc and brake caliper. The brake disc and wheel-side reducer are coaxially arranged, and power is transmitted to the drive wheel through a single-stage planetary gear. The pressure regulator, master cylinder, brake controller, and filter are all mounted on the vehicle body. The master cylinder and pressure regulator are connected to the brake caliper and filter via hydraulic lines. The pressure regulator integrates an accumulator and a solenoid valve to provide power to the brake caliper, enabling service and parking braking. The brake controller monitors the accumulator pressure in real time and controls the start and stop of the master cylinder charging the accumulator. When the accumulator oil pressure rises to the upper limit, the master cylinder is shut off through the solenoid valve. When the accumulator oil pressure drops to the lower limit, the master cylinder is immediately started to charge the accumulator, providing hydraulic power to the brake caliper and enabling service and parking braking. The shortcomings of the above patent are: In the above patent, the drive motor is fastened to the vehicle body through a flange, and a pressure regulator is set between the two drive motors, which results in a large axial distance between the two, making it unsuitable for installation and use in small or micro vehicles. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies and provide a drive axle motor, drive axle device, and vehicle that are compact in structure, have small axial space, and are suitable for small vehicles.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A drive axle motor, characterized in that: it includes an axle housing, within which a support portion is provided, dividing the interior of the axle housing into a left drive chamber and a right drive chamber. A left drive shaft is disposed in the left drive chamber, and a right drive shaft is disposed in the right drive chamber. The support portion has a left shaft hole on its left side and a right shaft hole on its right side. The right end of the left drive shaft is inserted into the left shaft hole and fixedly connected to the support portion via a bearing; the left end of the left drive shaft extends out of the axle housing to form a left drive end. The left end of the right drive shaft is inserted into the right shaft hole and fixedly connected to the support portion via a bearing; the right end of the right drive shaft extends out of the axle housing to form a right drive end. A left motor rotor is fixedly sleeved on the left drive shaft. A left motor stator is provided on the outside of the left motor rotor. The left motor rotor and the left motor stator are configured to cooperate with each other. The left motor stator is fixedly connected to the inner wall of the axle housing. A right motor rotor is fixedly sleeved on the right drive shaft. A right motor stator is provided on the outside of the right motor rotor. The right motor stator is fixedly connected to the inner wall of the axle housing. The left motor is formed by the left motor rotor, left motor stator, left drive shaft, and axle housing. The right motor is formed by the right motor rotor, right motor stator, right drive shaft, and axle housing. The left motor and right motor share the axle housing. There are no other components between the left drive shaft and the right drive shaft. The axial space occupied is small, the structure is compact, and it is suitable for use in small vehicles.

[0006] A drive axle device, characterized in that it includes a drive axle motor as described above, a left support sleeve at the left end of the axle housing and a right support sleeve at the right end, a left reducer at the left end of the left support sleeve, a right end of the left support sleeve being fixedly connected to the left end face of the axle housing, the housing of the left reducer being fixedly connected to the left end of the left support sleeve, the left reducer being driven by a left drive shaft, a left wheel at the left side of the left reducer being driven by the left reducer, a right reducer at the right end of the right support sleeve, a left end of the right support sleeve being fixedly connected to the right end face of the axle housing, the housing of the right reducer being fixedly connected to the right end of the right support sleeve, the right reducer being driven by a right drive shaft, a right wheel at the right end of the right reducer being driven by the right reducer, so that the left reducer is driven by the left drive shaft and the right reducer is driven by the right drive shaft, thereby shortening the axial distance.

[0007] The axle housing of this utility model is provided with braking mechanisms on both sides. The braking mechanism includes a brake disc and a brake caliper. The output flange of the left reducer or the output flange of the right reducer is provided with a brake disc. The brake disc is sleeved on the output flange and fixedly connected to the output flange. The brake caliper is configured to cooperate with the brake disc. The brake caliper is fixedly connected to the left support sleeve or the right support sleeve so as to achieve deceleration or stopping by clamping the brake disc with the brake caliper.

[0008] The axle housing of this utility model is provided with a heat dissipation mechanism, which includes a heat dissipation sleeve, a water pump, a water pipe, and a drain tank. The axle housing has a water inlet and a water outlet, and a heat dissipation sleeve is provided inside the axle housing. The inner wall of the axle housing has an annular water flow channel, which is spaced apart along the axial direction of the axle housing. The outer wall of the heat dissipation sleeve has an inlet channel and an outlet channel. The inlet is connected to the inlet channel, and the outlet is connected to the outlet channel. One end of the water flow channel is connected to the inlet channel, and the other end is connected to the outlet channel. The inlet channel, the water flow channel, and the outlet channel cooperate to form a heat dissipation channel. The two ends of the outer wall of the heat dissipation sleeve are sealed and fixedly connected to the two ends of the inner wall of the axle housing. The inlet is connected to the water pump via a water pipe, and the outlet is connected to the drain tank via a water pipe, so that when in use, cold water is introduced into the heat dissipation channel through the inlet, the water flows in the heat dissipation channel, and is discharged from the outlet, thereby cooling the internal components of the axle housing.

[0009] The water flow channel of this utility model includes a first water channel and a second water channel. The first water channel is provided on both sides of the water inlet, and the second water channel is provided on the side of the first water channel away from the water inlet. The width of the second water channel is greater than the width of the first water channel, so as to facilitate the setting of the second water channel at the left motor stator and the right motor stator. The second water channel is wider than the first water channel, forming a large water flow, which quickly dissipates heat from the left motor stator and the right motor stator.

[0010] The left drive shaft of this invention is fixedly connected to the inner wall of the left support sleeve via a bearing and a bearing seat, and the right drive shaft is fixedly connected to the inner wall of the right support sleeve via a bearing and a bearing seat, so that the left drive shaft is supported by the left support sleeve and the right drive shaft is supported by the right support sleeve.

[0011] A vehicle includes a chassis and a control system, characterized in that: the chassis is equipped with a drive axle device as described above, the axle housing is provided with shock absorption mechanisms on the left and right sides respectively, the drive axle device is connected to the chassis via the shock absorption mechanisms, the stator winding of the left motor stator is connected to the control system, and the stator winding of the right motor stator is connected to the control system, so as to facilitate the use of the drive axle device as a drive axle on the chassis.

[0012] The shock absorption mechanism of this utility model includes a leaf spring and a pressure plate. Leaf springs are respectively provided on the left and right support sleeves. A pressure plate is provided on the upper end of the leaf spring. U-bolts are provided on both sides of the leaf spring. Bolt holes are provided on the pressure plate. The lower end of the pressure plate abuts against the leaf spring. Two U-bolts clamp the leaf spring. The U-bolts are sleeved on the left or right support sleeve. The two ends of the U-bolts pass through the pressure plate and are locked by nuts to fix the pressure plate and leaf spring on the left or right support sleeve. The two ends of the leaf spring are respectively hinged to the vehicle frame to facilitate shock absorption of the vehicle body through the leaf spring.

[0013] Due to the above-mentioned structure, this utility model has the advantages of compact structure, small axial space, and suitability for small vehicles. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the drive axle motor and drive axle device in this utility model.

[0015] Figure 2 This is a utility model Figure 1 Top view.

[0016] Figure 3 This is a utility model Figure 1 A sectional view.

[0017] Figure 4 This is a utility model Figure 1 The left view.

[0018] Figure 5 This is an enlarged cross-sectional view of the axle housing in this utility model.

[0019] Figure 6 This is an enlarged schematic diagram of the heat dissipation sleeve in this utility model.

[0020] Figure 7 This is a cross-sectional view of the heat dissipation sleeve in this utility model.

[0021] Figure 8 This is a schematic diagram of the connection between the axle housing and the heat sink in this utility model.

[0022] Figure 9 This is a structural schematic diagram of the vehicle in this utility model.

[0023] Figure 10 This is a utility model Figure 9 A schematic diagram showing the connection between the leaf spring and the frame.

[0024] Reference numerals: 1. Axle housing; 2. Left drive shaft; 3. Right drive shaft; 4. Support; 5. Left motor rotor; 6. Left motor stator; 7. Right motor rotor; 8. Right motor stator; 9. Left support sleeve; 10. Right support sleeve; 11. Left reducer; 12. Left wheel; 13. Right reducer; 14. Right wheel; 15. Braking mechanism; 16. Brake disc; 17. Brake caliper; 18. Shock absorption mechanism; 19. Leaf spring; 20. Pressure plate; 21. U-bolt; 22. Water inlet; 23. Water outlet; 24. Heat dissipation channel; 25. Heat dissipation sleeve; 26. Water flow channel; 27. Water inlet channel; 28. Water outlet channel; 29. ​​First water channel; 30. Second water channel; 31. Automobile chassis; 32. Frame; 33. Drive axle assembly. Detailed Implementation

[0025] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0026] A drive axle motor, characterized in that it includes an axle housing 1, within which a support portion 4 is provided, dividing the interior of the axle housing 1 into a left drive cavity and a right drive cavity. A left drive shaft 2 is disposed in the left drive cavity, and a right drive shaft 3 is disposed in the right drive cavity. The support portion 4 has a left shaft hole on its left side and a right shaft hole on its right side. The axes of the left drive shaft 2 and the right drive shaft 3 are collinear. The right end of the left drive shaft 2 is inserted into the left shaft hole and fixedly connected to the support portion 4 via a bearing. The left end of the left drive shaft 2 extends out of the axle housing 1 to form a left drive end. The left end of the right drive shaft 3 is inserted into the right shaft hole and fixedly connected to the support portion 4 via a bearing. The axle housing 1 is fixedly connected to the support part 4, which is also fixedly connected to the inner wall of the axle housing 1. The right end of the right drive shaft 3 extends out of the axle housing 1 to form the right drive end. A left motor rotor 5 is fixedly sleeved on the left drive shaft 2. A left motor stator 6 is provided on the outside of the left motor rotor 5. The left motor rotor 5 and the left motor stator 6 are fitted together. The left motor stator 6 is fixedly connected to the inner wall of the axle housing 1. A right motor rotor 7 is fixedly sleeved on the right drive shaft 3. A right motor stator 8 is provided on the outside of the right motor rotor 7. The right motor stator 8 is fixedly connected to the inner wall of the axle housing 1. A left support is provided at the left end of the axle housing 1. The left support sleeve 9 has a right support sleeve 10 at its right end. A left reducer 11 is located at the left end of the left support sleeve 9. The right end of the left support sleeve 9 is fixedly connected to the left end face of the axle housing 1. The housing of the left reducer 11 is fixedly connected to the left end of the left support sleeve 9. The input end of the left reducer 11 is fixedly connected to the left drive shaft 2. The output end of the left reducer 11 has a left wheel 12, which is driven by the left reducer 11. A right reducer 13 is located at the right end of the right support sleeve 10. The left end of the right support sleeve 10 is fixedly connected to the right end face of the axle housing 1. The housing of the right reducer 13 is fixedly connected to the right end of the right support sleeve 10. The input end of the right reducer 13 is fixedly connected to the right drive shaft 3. The output end of the right reducer 13 is provided with a right wheel 14. The right wheel 14 is driven by the right reducer 13 to drive the left reducer through the left drive shaft. The right drive shaft drives the right reducer, shortening the axial distance. The left motor rotor, left motor stator, left drive shaft, and axle housing form the left motor. The right motor rotor, right motor stator, right drive shaft, and axle housing form the right motor. The left motor and right motor share the axle housing, resulting in a small radial space occupation. There are no other components between the left drive shaft and the right drive shaft, resulting in a small axial space occupation. The structure is compact and suitable for use in small vehicles.

[0027] A drive axle device 33 is characterized in that it includes a drive axle motor as described above, and braking mechanisms 15 are respectively provided on both sides of the axle housing 1. The braking mechanism 15 includes a brake disc 16 and a brake caliper 17. The brake disc 16 is provided on the output flange of the left reducer 11 or the output flange of the right reducer 13. The brake disc 16 is sleeved on the output flange and fixedly connected to the output flange. The brake caliper 17 is configured to cooperate with the brake disc 16. The brake caliper 17 is fixedly connected to the left support sleeve 9 or the right support sleeve 10 so that when braking, the brake caliper clamps the brake disc to achieve deceleration or stopping.

[0028] The axle housing 1 of this utility model is provided with a heat dissipation mechanism, which includes a heat dissipation sleeve 25, a water pump, a water pipe, and a drain tank. The axle housing 1 is provided with a water inlet 22 and a water outlet 23. The heat dissipation sleeve 25 is provided inside the axle housing 1. The inner wall of the axle housing 1 is provided with an annular water flow channel 26, which is spaced apart along the axial direction of the axle housing 1. The outer wall of the heat dissipation sleeve 25 is provided with a water inlet channel 27 and a water outlet channel 28, which are arranged side by side along the axial direction of the heat dissipation sleeve 25. The water inlet 22 is connected to the water inlet channel 27, and the water outlet 23 is connected to the water outlet channel 28. The axle housing 1 is connected to the axle housing 1. The axle housing 1 is fitted with the axle housing 25. The axle housing 1, axle housing 26, and axle housing 28 are fitted together to form a heat dissipation channel 24. The two ends of the axle housing 1 are sealed and fixed to the two ends of the axle housing 1. The axle housing 24 is connected to the axle pump via a water pipe and the axle housing 25 is connected to the drain tank via a water pipe. This allows cold water to be introduced into the heat dissipation channel through the axle housing during use. The water flows through the heat dissipation channel and is discharged from the axle housing through the outlet to cool the internal components of the axle housing.

[0029] The water flow channel 26 of this utility model includes a first water channel 29 and a second water channel 30. The first water channel 30 is provided on both sides of the water inlet 22. The second water channel 30 is provided on the side of the first water channel 29 away from the water inlet 22. The width of the second water channel 30 is greater than the width of the first water channel 29, so as to facilitate the setting of the second water channel 30 at the left motor stator and the right motor stator. The second water channel 30 is wider than the first water channel 29, forming a large water flow, which quickly dissipates heat from the left motor stator and the right motor stator.

[0030] In this invention, the left drive shaft 2 is fixedly connected to the inner wall of the left support sleeve 9 via a bearing and a bearing seat, and the right drive shaft 3 is fixedly connected to the inner wall of the right support sleeve 10 via a bearing and a bearing seat, so that the left drive shaft is supported by the left support sleeve and the right drive shaft is supported by the right support sleeve.

[0031] A vehicle includes a chassis 31 and a control system, characterized in that: the chassis 31 is equipped with a drive axle device 33 as described above; shock absorption mechanisms 18 are respectively provided on the left and right sides of the axle housing 1; the drive axle device 33 is connected to the chassis 31 via the shock absorption mechanisms 18; the stator winding of the left motor stator 6 is connected to the control system; and the stator winding of the right motor stator 8 is connected to the control system, so as to facilitate the use of the drive axle device as a drive axle on the chassis.

[0032] The shock absorption mechanism 18 of this utility model includes a leaf spring 19 and a pressure plate 20. Leaf springs 19 are respectively provided on the left support sleeve 9 and the right support sleeve 10. The pressure plate 20 is provided on the upper end of the leaf spring 19. U-bolts 21 are provided on both sides of the leaf spring 19. Bolt holes are provided on the pressure plate 20. The lower end of the pressure plate 20 abuts against the leaf spring 19. The two U-bolts 21 clamp the leaf spring 19. The U-bolts 21 are sleeved on the left support sleeve 9 or the right support sleeve 10. The two ends of the U-bolts 21 pass through the pressure plate 20 and are locked by nuts to fix the pressure plate 20 and the leaf spring 19 on the left support sleeve 9 or the right support sleeve 10. The two ends of the leaf spring 19 are respectively hinged to the vehicle frame 32 to facilitate shock absorption of the vehicle body through the leaf spring.

[0033] As attached Figure 1-3 In this utility model, a drive axle motor is located between the left and right wheels. A left drive shaft 2 and a right drive shaft 3 are symmetrically arranged inside the axle housing 1. The left drive shaft 2 is supported by a support part 4 and a left support sleeve 9, and the right drive shaft 2 is supported by a support part 4 and a right support sleeve 10. The support part 4 is a bracket or support plate. A left motor rotor 5 is fixed on the left drive shaft 2, and a left motor stator 6 is fitted over the left motor rotor 5. A right motor rotor 7 is fixed on the right drive shaft 3, and a right motor stator 8 is fitted over the right motor rotor 7. The left motor rotor 5 and left motor stator 6 have the same structure as the rotor and stator inside a motor in the prior art. The right motor rotor... 7. The right motor stator 8 has the same structure as the rotor and stator inside the existing motor. In this invention, the left motor is formed by the left motor rotor 5, left motor stator 6, left drive shaft 2, and axle housing 1, and the right motor is formed by the right motor rotor 7, right motor stator 8, right drive shaft 3, and axle housing 1. The left and right motors have the same structure and function as the existing motors. The difference is that in this invention, the left and right motors share the axle housing 1. At the same time, the axle housing 1, as part of the axle, is connected to the housings of the left and right reducers through the left and right support sleeves to form the main body of the drive axle.

[0034] As attached Figure 1-4The axle housing 1 is connected to the left reducer 11 and the right reducer 13 at both ends via the left support sleeve 9 and the right support sleeve 10. The left drive shaft 2 passes through the left support sleeve 9 and is directly connected to the input end of the left reducer 11, and the right drive shaft 3 passes through the right support sleeve 10 and is directly connected to the input end of the right reducer 13. There are no other transmission structures, which further reduces the axial dimension. The output end of the left reducer 11 serves as the hub end of the left wheel, and the output end of the right reducer 13 serves as the hub end of the right wheel 14, used to drive the left wheel 12 and the right wheel 13. Simultaneously, it can also be used to install brake disc 16. Brake disc 16 is sleeve-shaped and fits onto the left support sleeve 9 and left reducer 11, or the right support sleeve 10 and right reducer 13. One end of brake disc 16 is fixed to the output end of the left reducer 11 or the output end of the right reducer 13, and rotates together with the left wheel 12 or the right wheel 14. Brake disc 16 extends radially outward toward the end facing the axle housing 1, and cooperates with brake caliper 17. It has good braking performance, is easy to maintain, has a simple structure, occupies little space, and is suitable for use on small vehicles.

[0035] As attached Figure 5-8 This utility model also provides a heat dissipation mechanism on the axle housing 1. During installation, the water pump and drain tank are fixed to the frame 32 of the vehicle chassis 31. The inner wall of the axle housing 1 is provided with water flow channels 26 spaced axially from left to right. The water flow channels 26 are annular, but not closed annular. One end of the water flow channel 26 is connected to the inlet channel 27, and the other end is connected to the outlet channel 28. The inlet channel 27 and the outlet channel 28 are arranged axially along the heat dissipation sleeve 25. The inlet channel 27 and the outlet channel 28 are spaced apart. The outer wall of the heat dissipation sleeve 25 between the inlet channel 27 and the outlet channel 28 is tightly abutted against the inner wall of the axle housing 1 to form a seal. That is, the inner wall of the axle housing 1 between the two ends of the water flow channel 26 is tightly abutted against the outer wall of the heat dissipation sleeve 25 to form a seal, so that the inlet channel 27 and the outlet channel 28 are tightly abutted against each other. The slots 28 are not connected. Sealing rings are installed at both ends of the outer wall of the heat dissipation sleeve 25. The two ends of the outer wall of the heat dissipation sleeve 25 are welded and fixed to the two ends of the inner wall of the axle housing 1. The sealing rings and welding prevent water from flowing out between the heat dissipation sleeve 25 and the axle housing 1. During use, cold water is pumped into the inlet 22. The cold water enters the inlet slot 27 through the inlet 22, then flows through the inlet slot 27 and water flow channels 26 to the outlet slot 28, and finally flows out from the outlet 23. This process dissipates heat from the motor housing and its internal rotor, stator, and drive shaft. After entering through the inlet 22, the cold water reaches the inlet slot 27 and simultaneously enters multiple water flow channels 26. The water flow channels 26 are spaced apart along the axial direction of the axle housing, ensuring uniform heat dissipation throughout the axle housing and indirectly improving the motor's service life.

[0036] As attached Figure 9-10In this utility model, the drive axle device 33 can be used as an axle for a car. A control system, such as a PLC control system, is installed on the car chassis. During operation, the stator windings of the left motor stator 6 and the right motor stator 8 are connected to the control system. The control system controls the left and right motors respectively, allowing them to output the same or different torques. The brake caliper 17 and water pump are also controlled by the control system. Figure 9 This is a schematic diagram with the wheels and part of the upper structure of the car chassis removed to expose the leaf springs 19 and the connection between the frame 32. In this embodiment, the drive axle device 33 is used as the rear axle of the car. The front axle of the car adopts the existing technology and is not shown. The leaf springs 19 on the left and right sides of the axle housing 1 on the drive axle device 33 are hinged to the frame 32, which facilitates the shock absorption of the car body by the leaf springs 19 of the shock absorption mechanism 18. The structure is stable and has a strong load-bearing capacity.

[0037] Due to the above-mentioned structure, this utility model has the advantages of compact structure, small axial space, and suitability for small vehicles.

Claims

1. A drive axle motor, characterized in that: The axle housing (1) includes a support (4) inside the axle housing (1), which divides the interior of the axle housing (1) into a left drive chamber and a right drive chamber. A left drive shaft (2) is provided in the left drive chamber, and a right drive shaft (3) is provided in the right drive chamber. A left shaft hole is provided on the left side of the support (4), and a right shaft hole is provided on the right side. The right end of the left drive shaft (2) is inserted into the left shaft hole and fixedly connected to the support (4) via a bearing. The left end of the left drive shaft (2) extends out of the axle housing (1) to form the left drive end. The left end of the right drive shaft (3) is inserted into the right shaft hole and fixedly connected to the support (4) via a bearing. The right drive shaft (3) extends through the axle housing (1) to form the right drive end. The left drive shaft (2) is fixedly fitted with a left motor rotor (5). The left motor rotor (5) is provided with a left motor stator (6) on the outside of the left motor rotor (5). The left motor rotor (5) and the left motor stator (6) are configured to cooperate with each other. The left motor stator (6) is fixedly connected to the inner wall of the axle housing (1). The right drive shaft (3) is fixedly fitted with a right motor rotor (7). The right motor rotor (7) is provided with a right motor stator (8) on the outside of the right motor rotor (7). The right motor stator (8) is fixedly connected to the inner wall of the axle housing (1).

2. A drive axle device, characterized in that: Including the drive axle motor as described in claim 1, the axle housing (1) has a left support sleeve (9) at the left end and a right support sleeve (10) at the right end. The left support sleeve (9) has a left reducer (11) at the left end. The right end of the left support sleeve (9) is fixedly connected to the left end face of the axle housing (1). The housing of the left reducer (11) is fixedly connected to the left end of the left support sleeve (9). The left reducer (11) is driven by a left drive shaft (2). A left wheel is provided on the left side of the left reducer (11). (12) The left wheel (12) is driven by the left reducer (11). The right end of the right support sleeve (10) is provided with a right reducer (13). The left end of the right support sleeve (10) is fixedly connected to the right end face of the axle housing (1). The housing of the right reducer (13) is fixedly connected to the right end of the right support sleeve (10). The right reducer (13) is driven by the right drive shaft (3). The right end of the right reducer (13) is provided with a right wheel (14). The right wheel (14) is driven by the right reducer (13).

3. A drive axle device according to claim 2, characterized in that: Braking mechanisms (15) are provided on both sides of the axle housing (1). The braking mechanism (15) includes a brake disc (16) and a brake caliper (17). The output flange of the left reducer (11) or the output flange of the right reducer (13) is provided with a brake disc (16). The brake disc (16) is fitted on the output flange and fixedly connected to the output flange. The brake caliper (17) is configured to cooperate with the brake disc (16). The brake caliper (17) is fixedly connected to the left support sleeve (9) or the right support sleeve (10).

4. A drive axle device according to claim 2 or 3, characterized in that: The axle housing (1) is provided with a heat dissipation mechanism, which includes a heat dissipation sleeve (25). The axle housing (1) is provided with a water inlet (22) and a water outlet (23). The heat dissipation sleeve (25) is provided inside the axle housing (1). The inner wall of the axle housing (1) is provided with an annular water flow channel (26). The water flow channel (26) is spaced apart along the axial direction of the axle housing (1). The outer wall of the heat dissipation sleeve (25) is provided with a water inlet channel (27) and a water outlet channel (28). 28), the water inlet (22) is connected to the water inlet trough (27), the water outlet (23) is connected to the water outlet trough (28), one end of the water flow trough (26) is connected to the water inlet trough (27), and the other end is connected to the water outlet trough (28). The water inlet trough (27), the water flow trough (26), and the water outlet trough (28) cooperate to form a heat dissipation channel (24). The two ends of the outer wall of the heat dissipation sleeve (25) are sealed and fixedly connected to the two ends of the inner wall of the axle housing (1).

5. A drive axle device according to claim 4, characterized in that: The water channel (26) includes a first water channel (29) and a second water channel (30). The first water channel (30) is provided on both sides of the water inlet (22). The second water channel (30) is provided on the side of the first water channel (29) away from the water inlet (22). The width of the second water channel (30) is greater than the width of the first water channel (29).

6. A drive axle device according to claim 2, 3, or 5, characterized in that: The left drive shaft (2) is fixedly connected to the inner wall of the left support sleeve (9) via a bearing and a bearing seat, and the right drive shaft (3) is fixedly connected to the inner wall of the right support sleeve (10) via a bearing and a bearing seat.

7. A vehicle, comprising a vehicle chassis (31) and a control system, characterized in that: The vehicle chassis (31) is equipped with a drive axle device (33) as described in any one of claims 2-6. The axle housing (1) is provided with shock absorption mechanisms (18) on the left and right sides respectively. The drive axle device (33) is connected to the vehicle chassis (31) via the shock absorption mechanisms (18). The stator winding of the left motor stator (6) is connected to the control system, and the stator winding of the right motor stator (8) is connected to the control system.

8. A vehicle according to claim 7, characterized in that: The shock absorption mechanism (18) includes a leaf spring (19) and a pressure plate (20). The left support sleeve (9) and the right support sleeve (10) are respectively provided with leaf springs (19). The upper end of the leaf spring (19) is provided with a pressure plate (20). The leaf spring (19) is provided with U-bolts (21) on both sides. The pressure plate (20) is provided with bolt holes. The lower end of the pressure plate (20) abuts against the leaf spring (19). The two U-bolts (21) clamp the leaf spring (19). The U-bolts (21) are sleeved on the left support sleeve (9) or the right support sleeve (10). The two ends of the U-bolts (21) pass through the pressure plate (20) and are locked by nuts to fix the pressure plate (20) and the leaf spring (19) on the left support sleeve (9) or the right support sleeve (10). The two ends of the leaf spring (19) are respectively hinged to the frame (32).

Images