Drive axle assembly and vehicle

Abstract

The invention belongs to the technical field of vehicles, and discloses a drive axle assembly and a vehicle, the drive axle assembly comprises a speed reducer shell, a differential lock assembly and a differential assembly, the speed reducer shell is provided with a containing cavity, the containing cavity is provided with a groove, a piston is located in the containing cavity, the piston is provided with a boss, and the piston can slide in the axis direction of a transmission shaft; the differential case is provided with a shaft neck in a protruding mode, the bearing sleeve is arranged on the shaft neck, the shaft neck is provided with end face teeth, and the sliding gear sleeve can move in the axis direction of the transmission shaft so that the end face teeth can be meshed with or separated from the sliding gear sleeve. The end face teeth and the sliding gear sleeve on the differential case always move in the bearing in the axis direction of the bearing, the end face teeth of the differential case are made to be far away from the brake, the axial position of the shifting fork is axially limited through the speed reducer case, the bearing can radially limit the sliding gear sleeve, and therefore the differential lock assembly does not need to be manually locked before the half shaft is assembled.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a drive axle assembly and a vehicle. Background Art

[0002] Most tractors use a short wheelbase structure. When the brake is placed in front of the short wheelbase drive axle, the inter-wheel differential lock interferes with the brake. When the brake is placed in front of the drive axle, the inter-wheel differential lock is not selected, or when the inter-wheel differential lock is selected, the brake needs to be placed behind the drive axle. In the existing tractor drive axle assembly, due to the large axial size of the inter-wheel differential lock, the inter-wheel differential lock and the brake will interfere, limiting the freedom of vehicle layout.

[0003] Therefore, there is an urgent need for a drive axle assembly and a vehicle to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a drive axle assembly, which can shorten the axial dimension of the piston, so that the differential lock assembly is far away from the brake, and the end face teeth of the differential case are far away from the brake, and there is no need to manually lock the differential lock assembly before assembling the half shaft.

[0005] In order to solve the above problems existing in the prior art, the present invention adopts the following technical solutions:

[0006] Drive axle assembly, including:

[0007] A reducer housing, wherein the reducer housing is provided with a receiving cavity, and the receiving cavity is provided with a groove;

[0008] A differential lock assembly, the differential lock assembly comprising a sliding gear sleeve, a shift fork, a transmission shaft, an elastic member and a piston, the transmission shaft is slidably arranged in the accommodating chamber, one end of the shift fork is connected to the transmission shaft, and the other end of the shift fork is connected to the sliding gear sleeve, the elastic member is sleeved on the transmission shaft, and the two ends of the elastic member are respectively connected to the shift fork and the reducer housing, the piston is located in the accommodating chamber, and the piston is connected to the shift fork, and the piston is provided with a boss, and the piston can slide along the axial direction of the transmission shaft so that the boss is inserted into the groove;

[0009] A differential assembly, the differential assembly comprising a differential case and a bearing, the differential case being arranged on the reducer case, the differential case being protruding with a shaft neck, the bearing sleeve being arranged on the shaft neck, the shaft neck being provided with end face teeth, the sliding gear sleeve being able to move along the axial direction of the transmission shaft so that the end face teeth are engaged or disengaged with the sliding gear sleeve, and the bearing is configured to radially limit the end face teeth and the sliding gear sleeve.

[0010] Preferably, the differential assembly further comprises an adjusting ring, wherein the adjusting ring is sleeved on the journal and the adjusting ring is located between the bearing and the differential case.

[0011] Preferably, the inner ring of the adjustment ring is provided with a connecting hole, the connecting hole is in a stepped structure, the outer peripheral surface of the journal is provided with a stepped portion, and along the circumferential direction of the adjustment ring, the connecting hole is connected to the stepped portion.

[0012] Preferably, the differential assembly also includes a bearing cover, which is installed on the reducer housing, and the bearing cover has a limiting portion and a semicircular hole, the inner circumferential wall of the semicircular hole abuts against the outer circumferential wall of the bearing, the bearing has an outer end face and an inner end face, the inner end face of the bearing abuts against the adjusting ring, and the outer end face of the bearing abuts against the limiting portion.

[0013] Preferably, the differential assembly also includes a locking plate, which is installed on the outer ring of the adjusting ring. The differential case is provided with a clip, and there are multiple clips. Along the circumferential direction of the adjusting ring, multiple clips are arranged at intervals, and the locking plate can be inserted between two adjacent clips.

[0014] Preferably, the accommodating chamber includes a first accommodating area and a second accommodating area which are interconnected, the first accommodating area having a first circular hole, the first circular hole being configured to be slidably connected to the piston, the first circular hole being connected to the groove, the groove being an annular structure, the groove being configured to be slidably plugged into the boss, the second accommodating area having a second circular hole and a third circular hole, the second circular hole and the third circular hole being configured to be slidably connected to the transmission shaft.

[0015] Preferably, the differential lock assembly further comprises an end cover and a pipe joint, the end cover being arranged at the opening of the first accommodating area, the edge of the end cover being provided with a mounting hole, the pipe joint being arranged at the mounting hole, the end cover being provided with a vent hole, and the vent hole being connected to the mounting hole.

[0016] Preferably, the differential lock assembly also includes a pin, a blind hole is opened at the end of the transmission shaft, one end of the pin is inserted into the blind hole, the other end of the pin has a spherical end surface, the piston has a transition end surface, the boss is an annular structure, the boss is arranged around the transition end surface, and the spherical end surface is connected to the transition end surface.

[0017] Preferably, the longitudinal cross-section of the elastic member is a rectangular structure.

[0018] To achieve the above object, the present invention further provides a vehicle, comprising a vehicle frame and the above drive axle assembly, wherein the drive axle assembly is mounted on the vehicle frame.

[0019] The beneficial effects of the present invention are:

[0020] The drive axle assembly provided by the present invention has a reducer housing provided with a receiving chamber, and the receiving chamber has a groove. The differential lock assembly includes a sliding gear sleeve, a shift fork, a transmission shaft, an elastic member and a piston, the transmission shaft is slidably arranged in the receiving chamber, one end of the shift fork is connected to the transmission shaft, and the other end of the shift fork is connected to the sliding gear sleeve, the elastic member is sleeved on the transmission shaft, and the two ends of the elastic member are respectively connected to the shift fork and the reducer housing, the piston is located in the receiving chamber, and the piston is connected to the shift fork, and the piston is provided with a boss, and the piston can slide along the axial direction of the transmission shaft so that the boss is inserted into the groove, which can shorten the axial dimension of the piston, so that the differential lock assembly is away from the brake, and the interference between the two is avoided to affect the freedom of the whole vehicle layout. The differential assembly includes a differential case and a bearing. The differential case is arranged on the reducer case. The differential case is provided with a journal protruding from the differential case. The bearing sleeve is arranged on the journal. The journal is provided with end face teeth. The sliding gear sleeve can move along the axial direction of the transmission shaft so that the end face teeth and the sliding gear sleeve are engaged or separated. The bearing is configured to limit the radial position of the end face teeth and the sliding gear sleeve. During the switching process between the unlocking and locking states of the drive axle assembly, the end face teeth of the journal on the differential case and the meshing end of the sliding gear sleeve always move along the axial direction of the bearing, so that the end face teeth of the differential case are away from the brake. In the unlocking state, the axial position of the axial limiting fork of the reducer case is used to enable the bearing to radially limit the sliding gear sleeve, so that there is no need to manually lock the differential lock assembly before assembling the half shaft.

[0021] The vehicle provided by the present invention comprises a vehicle frame and a drive axle assembly, wherein the drive axle assembly is mounted on the vehicle frame. During the switching process between the unlocking and locking states of the drive axle assembly, the face teeth of the journal on the differential case and the meshing end of the sliding gear sleeve always move in the bearing along the axial direction thereof, so that the face teeth of the differential case are away from the brake. When the drive axle assembly is in the unlocking state, the axial position of the axial limiting fork of the reducer case is used to enable the bearing to radially limit the sliding gear sleeve, thereby eliminating the need to manually lock the differential lock assembly before assembling the half shaft, and ensuring accurate matching with the differential lock switch. When the drive axle assembly is in the locking state, the boss of the piston can be embedded in the groove, shortening the axial dimension of the piston, so that the differential lock assembly is away from the brake, avoiding interference between the differential lock and the brake and affecting the degree of freedom of the whole vehicle layout. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 An exploded schematic diagram of a drive axle assembly provided by an embodiment of the present invention;

[0023] Figure 2 A cross-sectional view of a drive axle assembly in a locked state provided by an embodiment of the present invention;

[0024] Figure 3A cross-sectional view of a drive axle assembly in an unlocked state provided by an embodiment of the present invention;

[0025] Figure 4 An exploded schematic diagram of a differential assembly provided by an embodiment of the present invention;

[0026] Figure 5 A cross-sectional view of a reducer housing provided in an embodiment of the present invention;

[0027] Figure 6 A schematic diagram of the structure of a bearing cover provided in an embodiment of the present invention;

[0028] Figure 7 A schematic structural diagram of a differential case provided by an embodiment of the present invention;

[0029] Figure 8 A cross-sectional view of an adjustment ring provided in an embodiment of the present invention;

[0030] Fig. 9 A schematic diagram of the structure of an elastic member provided in an embodiment of the present invention;

[0031] Fig.10 A cross-sectional view of an end cap provided by an embodiment of the present invention;

[0032] Fig.11 A cross-sectional view of a piston provided in accordance with an embodiment of the present invention.

[0033] Reference numerals:

[0034] 1. reducer housing; 11. accommodating cavity; 111. first accommodating area; 112. second accommodating area; 12. groove; 13. first circular hole; 14. second circular hole; 15. third circular hole;

[0035] 2. differential lock assembly; 21. sliding gear sleeve; 22. shift fork; 23. transmission shaft; 231. blind hole; 24. elastic member; 25. piston; 251. boss; 26. end cover; 261. mounting hole; 262. vent hole; 27. pipe joint; 28. pin;

[0036] 3. Differential assembly; 31. Differential case; 311. Journal; 312. Face gear; 313. Step portion; 314. Snap-on; 32. Bearing; 33. Adjusting ring; 331. Connecting hole; 34. Bearing cover; 341. Limiting portion; 342. Semicircular hole; 35. Locking plate. DETAILED DESCRIPTION

[0037] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0038] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0040] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0041] like Figure 1-Figure 11As shown, the drive axle assembly includes a reducer housing 1, a differential lock assembly 2 and a differential assembly 3. The reducer housing 1 is provided with a receiving chamber 11, and the receiving chamber 11 is provided with a groove 12. The differential lock assembly 2 includes a sliding gear sleeve 21, a shift fork 22, a transmission shaft 23, an elastic member 24 and a piston 25. The transmission shaft 23 is slidably arranged in the receiving chamber 11, one end of the shift fork 22 is connected to the transmission shaft 23, and the other end of the shift fork 22 is connected to the sliding gear sleeve 21. The elastic member 24 is sleeved on the transmission shaft 23, and the two ends of the elastic member 24 are respectively connected to the shift fork 22 and the reducer housing 1. The piston 25 is located in the receiving chamber 11, and the piston 25 is connected to the shift fork 22. The piston 25 is provided with a boss 251, and the piston 25 can slide along the axial direction of the transmission shaft 23 so that the boss 251 is inserted into the groove 12. The differential assembly 3 includes a differential case 31 and a bearing 32. The differential case 31 is arranged on the reducer case 1. The differential case 31 is provided with a shaft neck 311. The bearing 32 is sleeved on the shaft neck 311. The shaft neck 311 is provided with an end face tooth 312. The sliding gear sleeve 21 can move along the axial direction of the transmission shaft 23 so that the end face tooth 312 is engaged or separated with the sliding gear sleeve 21. The bearing 32 is configured to be used for radially limiting the end face tooth 312 and the sliding gear sleeve 21.

[0042] Specifically, the sliding gear sleeve 21 and the end face teeth 312 of the differential case 31 can mesh with each other, the outer peripheral surface of the sliding gear sleeve 21 is provided with an annular groove, the fork-shaped end of the shift fork 22 is plugged into the annular groove, the connecting end of the shift fork 22 is provided with a hole, and the transmission shaft 23 is connected to the shift fork 22 through the hole of the connecting end. The elastic member 24 is set as a return spring, the central axis of the elastic member 24 coincides with the central axis of the transmission shaft 23, one end of the elastic member 24 is connected to the end face of the shift fork 22, and the other end is connected to the reducer case 1. The end face of the piston 25 is convexly provided with a boss 251, and a groove 12 is provided at a position corresponding to the boss 251 in the accommodating chamber 11, and the boss 251 is plugged and matched with the groove 12. When the differential lock switch is released, the shift fork 22 can drive the transmission shaft 23 and the sliding gear sleeve 21 to slide along the axis direction of the transmission shaft 23 under the elastic action of the elastic member 24, so that the sliding gear sleeve 21 is separated from the end face teeth 312 of the journal 311, and the boss 251 is separated from the groove 12. At this time, the drive axle assembly is in an unlocked state. On the contrary, when the differential lock switch is pressed, the shift fork 22 drives the transmission shaft 23 to slide along the opposite direction of its axis under the action of the differential lock, so that the sliding gear sleeve 21 is meshed with the end face teeth 312 of the journal 311, and the boss 251 of the piston 25 is embedded in the groove 12. At this time, the drive axle assembly is in a locked state, which can shorten the axial dimension of the piston 25, so that the differential lock assembly 2 is away from the brake, avoiding interference between the two and affecting the freedom of vehicle layout. Furthermore, during the switching process between the unlocked and locked states of the drive axle assembly, the face teeth 312 of the journal 311 on the differential case 31 and the meshing tooth end of the sliding gear sleeve 21 always move in the bearing 32 along its axial direction, so that the face teeth 312 of the differential case 31 are away from the brake. In the unlocked state, the axial position of the axial limiting fork 22 of the reducer case 1 is limited so that the bearing 32 can radially limit the sliding gear sleeve 21, thereby eliminating the need to manually lock the differential lock assembly 2 before assembling the half-axle and ensuring accurate matching with the differential lock switch.

[0043] Further, refer to Figure 1-Figure 4 The differential assembly 3 further includes an adjusting ring 33, which is sleeved on the journal 311 and is located between the bearing 32 and the differential case 31. Specifically, the center hole of the adjusting ring 33 is fixedly connected to the journal 311 of the differential case 31, and the two end faces of the adjusting ring 33 are in contact with the inner side of the bearing 32 and the differential case 31, respectively. Compared with the traditional arrangement of the adjusting ring 33 on the outer side of the bearing 32, the axial arrangement space of the adjusting ring 33 is reduced, so that the shift fork 22 is close to the differential assembly, and thus away from the brake.

[0044] Further, refer to Figure 7 and Figure 8The inner ring of the adjustment ring 33 is provided with a connecting hole 331, which is a stepped structure. The outer peripheral surface of the journal 311 is provided with a stepped portion 313. Along the circumferential direction of the adjustment ring 33, the connecting hole 331 is connected to the stepped portion 313. Specifically, the stepped connecting hole 331 of the adjustment ring 33 abuts against the stepped portion 313 of the shaft diameter, further reducing the axial arrangement space of the adjustment ring 33, making the shift fork 22 closer to the differential assembly and away from the brake. The outer periphery of the adjustment ring 33 is provided with a plurality of assembly grooves, which are used for the clamping fit of the assembly tool.

[0045] Further, refer to Figure 2 and Figure 6 The differential assembly 3 further includes a bearing cover 34, which is mounted on the reducer housing 1. The bearing cover 34 has a limiting portion 341 and a semicircular hole 342. The inner peripheral wall of the semicircular hole 342 abuts against the outer peripheral wall of the bearing 32. The bearing 32 has an outer end face and an inner end face. The inner end face of the bearing 32 abuts against the adjustment ring 33, and the outer end face of the bearing 32 abuts against the limiting portion 341. Specifically, the bearing cover 34 is mounted on the reducer housing 1 by bolts, the semicircular hole 342 of the bearing cover 34 abuts against the outer periphery of the bearing 32, and the limiting portion 341 of the bearing cover 34 abuts against the outer end face of the bearing 32, thereby reducing the axial dimension of the differential assembly 3 and keeping away from the brake.

[0046] Further, refer to Figure 4 The differential assembly 3 further includes a locking plate 35, which is mounted on the outer ring of the adjusting ring 33. The differential case 31 is provided with a clamping member 314, and the number of the clamping members 314 is multiple. Along the circumferential direction of the adjusting ring 33, multiple clamping members 314 are arranged at intervals, and the locking plate 35 can be inserted between two adjacent clamping members 314. Specifically, the adjusting ring 33 is provided with a mounting surface, and the locking plate 35 is mounted on the mounting surface by bolts. The locking plate 35 can be plugged and matched with the intervals between the multiple clamping members 314. When the drive axle assembly switches between the unlocking and locking states, the adjusting ring 33 is connected or separated from the differential case 31 through the plug-in cooperation of the locking plate 35.

[0047] Further, refer to Figure 2 and Figure 5The accommodating chamber 11 includes a first accommodating area 111 and a second accommodating area 112 which are connected to each other. The first accommodating area 111 has a first circular hole 13 which is configured to be slidably connected with the piston 25. The first circular hole 13 is connected to the groove 12 which is annular in structure and configured to be slidably plugged with the boss 251. The second accommodating area 112 has a second circular hole 14 and a third circular hole 15 which are configured to be slidably connected with the transmission shaft 23. When the differential lock switch is released, the shift fork 22 can drive the transmission shaft 23 to slide in the second circular hole 14 and the third circular hole 15 along the axial direction of the transmission shaft 23 under the elastic action of the elastic member 24. The sliding gear sleeve 21 is separated from the end face teeth 312 of the journal 311. At the same time, the boss 251 is separated from the groove 12. At this time, the drive axle assembly is in an unlocked state. When the differential lock switch is pressed, the shift fork 22 drives the transmission shaft 23 to slide in the second circular hole 14 and the third circular hole 15 in the opposite direction of its axis under the action of the differential lock, so that the sliding gear sleeve 21 is engaged with the end face teeth 312 of the journal 311. At the same time, the boss 251 of the piston 25 located in the first circular hole 13 is embedded in the groove 12. At this time, the drive axle assembly is in a locked state, which can shorten the axial dimension of the piston 25 and keep the differential lock assembly 2 away from the brake.

[0048] Further, refer to Figure 1 , Figure 2 and Fig.10 The differential lock assembly 2 further includes an end cover 26 and a pipe joint 27. The end cover 26 is disposed at the opening of the first accommodating area 111. A mounting hole 261 is disposed at the edge of the end cover 26. The pipe joint 27 is disposed at the mounting hole 261. The end cover 26 is provided with a vent hole 262, which is connected to the mounting hole 261. Specifically, the end cover 26 is fixedly connected to the pipe joint 27 through the mounting hole 261, and the vent hole 262 of the end cover 26 is used for ventilation. The pipe joint 27 is arranged on the side of the end cover 26, so as to shorten the axial dimension of the differential lock assembly 2.

[0049] Further, refer to Figure 1 , Figure 2 and Fig.11 The differential lock assembly 2 further includes a pin 28, a blind hole 231 is provided at the end of the transmission shaft 23, one end of the pin 28 is plugged into the blind hole 231, the other end of the pin 28 has a spherical end surface, the piston 25 has a transition end surface, the boss 251 is an annular structure, the boss 251 is arranged around the transition end surface, and the spherical end surface is connected to the transition end surface. Specifically, one end of the pin 28 is connected and matched with the transmission shaft 23 through the blind hole 231, and the other end of the pin 28 is matched with the transition end surface of the piston 25 through the spherical end surface, further shortening the axial dimension of the piston 25, so that the differential lock assembly 2 is away from the brake.

[0050] Further, refer to Fig. 9 The longitudinal section of the elastic member 24 is a rectangular structure. Specifically, the elastic member 24 with a rectangular cross section can improve the compression force and return reliability of the elastic member 24 compared with the traditional elastic member 24 with a circular cross section.

[0051] This embodiment also provides a vehicle, including a frame and the above-mentioned drive axle assembly, wherein the drive axle assembly is mounted on the frame. Specifically, the flange surface of the speed reducer and differential assembly matches with the flange surface of the axle housing assembly and is connected with distributed bolts, the brake assembly matches with the brake flange of the axle housing assembly and is connected with distributed bolts, and the two spline shafts of the half shaft are respectively connected with the sliding gear sleeve 21 of the speed reducer and differential assembly and the spline holes of the half shaft gear. During the switching process between the unlocking and locking states of the drive axle assembly, the face teeth 312 of the journal 311 on the differential case 31 and the meshing end of the sliding gear sleeve 21 always move in the bearing 32 along the axial direction thereof, so that the face teeth 312 of the differential case 31 are away from the brake. When the drive axle assembly is in the unlocking state, the axial position of the axial limit fork 22 of the reducer case 1 is used to radially limit the sliding gear sleeve 21, so that the differential lock assembly 2 does not need to be manually locked before the half-axle is assembled, and accurate matching with the differential lock switch can be ensured. When the drive axle assembly is in the locked state, the boss 251 of the piston 25 can be embedded in the groove 12, shortening the axial dimension of the piston 25, so that the differential lock assembly 2 is away from the brake.

[0052] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. Drive axle assembly, characterized in that: include: A reducer housing (1), wherein the reducer housing (1) is provided with a receiving chamber (11), and the receiving chamber (11) is provided with a groove (12); A differential lock assembly (2), the differential lock assembly (2) comprising a sliding gear sleeve (21), a shift fork (22), a transmission shaft (23), an elastic member (24) and a piston (25), the transmission shaft (23) being slidably arranged in the accommodating cavity (11), one end of the shift fork (22) being connected to the transmission shaft (23), the other end of the shift fork (22) being connected to the sliding gear sleeve (21), the elastic member (24) being sleeved on the transmission shaft (23), and the two ends of the elastic member (24) being respectively connected to the shift fork (22) and the reducer housing (1), the piston (25) being located in the accommodating cavity (11), and the piston (25) being connected to the shift fork (22), the piston (25) being provided with a boss (251), the piston (25) being able to slide along the axial direction of the transmission shaft (23) so that the boss (251) is inserted into the groove (12); A differential assembly (3), the differential assembly (3) comprising a differential case (31) and a bearing (32), the differential case (31) being arranged on the reducer case (1), the differential case (31) being provided with a shaft neck (311), the bearing (32) being sleeved on the shaft neck (311), the shaft neck (311) being provided with an end face tooth (312), the sliding gear sleeve (21) being able to move along the axial direction of the transmission shaft (23) so that the end face tooth (312) and the sliding gear sleeve (21) are engaged or separated, and the bearing (32) is configured to limit the radial position of the end face tooth (312) and the sliding gear sleeve (21).

2. The drive axle assembly according to claim 1, characterized in that: The differential assembly (3) further comprises an adjusting ring (33), wherein the adjusting ring (33) is sleeved on the shaft neck (311), and the adjusting ring (33) is located between the bearing (32) and the differential case (31).

3. The drive axle assembly according to claim 2, characterized in that: The inner ring of the adjusting ring (33) is provided with a connecting hole (331), and the connecting hole (331) is in a stepped structure. The outer peripheral surface of the journal (311) is provided with a stepped portion (313), and along the circumferential direction of the adjusting ring (33), the connecting hole (331) is connected to the stepped portion (313).

4. The drive axle assembly according to claim 2, characterized in that: The differential assembly (3) further comprises a bearing cover (34), wherein the bearing cover (34) is mounted on the reducer housing (1), wherein the bearing cover (34) comprises a limiting portion (341) and a semicircular hole (342), wherein the inner peripheral wall of the semicircular hole (342) abuts against the outer peripheral wall of the bearing (32), wherein the bearing (32) comprises an outer end face and an inner end face, wherein the inner end face of the bearing (32) abuts against the adjusting ring (33), and the outer end face of the bearing (32) abuts against the limiting portion (341).

5. The drive axle assembly according to claim 2, characterized in that: The differential assembly (3) further comprises a locking plate (35), wherein the locking plate (35) is mounted on the outer ring of the adjusting ring (33); the differential case (31) is provided with a clamping member (314), wherein the number of the clamping members (314) is plural, and the plural clamping members (314) are arranged at intervals along the circumferential direction of the adjusting ring (33); and the locking plate (35) can be inserted between two adjacent clamping members (314).

6. The drive axle assembly according to claim 1, characterized in that: The accommodating chamber (11) comprises a first accommodating area (111) and a second accommodating area (112) which are arranged in communication with each other. The first accommodating area (111) has a first circular hole (13), and the first circular hole (13) is configured to be slidably connected to the piston (25). The first circular hole (13) is connected to the groove (12), and the groove (12) is an annular structure. The groove (12) is configured to be slidably plugged into the boss (251). The second accommodating area (112) has a second circular hole (14) and a third circular hole (15), and the second circular hole (14) and the third circular hole (15) are configured to be slidably connected to the transmission shaft (23).

7. The drive axle assembly according to claim 6, characterized in that: The differential lock assembly (2) further comprises an end cover (26) and a pipe joint (27); the end cover (26) is arranged at the opening of the first accommodating area (111); a mounting hole (261) is arranged at the edge of the end cover (26); the pipe joint (27) is arranged at the mounting hole (261); the end cover (26) is provided with a vent hole (262); and the vent hole (262) is connected to the mounting hole (261).

8. The drive axle assembly according to claim 1, characterized in that: The differential lock assembly (2) further comprises a pin (28), a blind hole (231) is formed at the end of the transmission shaft (23), one end of the pin (28) is inserted into the blind hole (231), the other end of the pin (28) has a spherical end surface, the piston (25) has a transition end surface, the boss (251) is annular, the boss (251) is arranged around the transition end surface, and the spherical end surface is connected to the transition end surface.

9. The drive axle assembly according to claim 1, characterized in that: The elastic member (24) has a longitudinal cross-section in the shape of a rectangular structure.

10. A vehicle, characterized in that It comprises a vehicle frame and the drive axle assembly according to any one of claims 1 to 9, wherein the drive axle assembly is mounted on the vehicle frame.

Images