Drive axle assembly and vehicle

Abstract

The application 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. The piston can slide along the axis direction of a transmission shaft so that the boss is inserted into the groove, the axial dimension of the piston is shortened, the differential lock assembly is away from a brake, the speed reducer shell is provided with a shaft neck. A bearing sleeve is arranged on the shaft neck. The shaft neck is provided with an end face tooth. A sliding tooth sleeve can move along the axis direction of the transmission shaft so that the end face tooth is engaged with or separated from the sliding tooth sleeve. The end face tooth on the speed reducer shell and the sliding tooth sleeve always move along the axis direction of the bearing so that the end face tooth of the speed reducer shell is away from the brake. The axial position of a yoke is limited by the speed reducer shell. The bearing can limit the radial position of the sliding tooth sleeve so that 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-track design. When the brake is placed in front of the short-track 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 installed, or if the inter-wheel differential lock is installed, the brake needs to be placed behind the drive axle. In existing tractor drive axle assemblies, the large axial dimension of the inter-wheel differential lock causes interference between the inter-wheel differential lock and the brake, limiting the flexibility 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 that can shorten the axial dimension of the piston so that the differential lock assembly is away from the brake, and the end face teeth of the differential case are away from the brake, so that 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 an accommodating cavity, and the accommodating 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 being slidably disposed in the accommodating cavity, one end of the shift fork being connected to the transmission shaft, and the other end of the shift fork being connected to the sliding gear sleeve, the elastic member being sleeved on the transmission shaft, and the two ends of the elastic member being respectively connected to the shift fork and the reducer housing, the piston being located in the accommodating cavity and connected to the shift fork, the piston being provided with a boss, the piston being capable of sliding along the axial direction of the transmission shaft so that the boss is inserted into the groove;

[0009] A differential assembly, the differential assembly includes a differential case and a bearing, the differential case is arranged on the reducer case, the differential case is protruding with a shaft neck, the bearing sleeve is arranged on the shaft neck, the shaft neck 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 engage or disengage, and the bearing is configured to radially limit the end face teeth and the sliding gear sleeve.

[0010] Preferably, the differential assembly further includes an adjusting ring, which is sleeved on the journal and 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 the connecting hole is connected to the stepped portion along the circumferential direction of the adjustment ring.

[0012] Preferably, the differential assembly also includes a bearing cover, which is installed on the reducer housing. 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 further includes a locking plate, which is mounted 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 cavity 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 includes an end cover and a pipe joint, the end cover is arranged at the opening of the first accommodating area, the edge of the end cover is provided with a mounting hole, the pipe joint is arranged in the mounting hole, the end cover is provided with a vent hole, and the vent hole is connected to the mounting hole.

[0016] Preferably, the differential lock assembly also includes a pin, a blind hole is provided 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-mentioned object, the present invention further provides a vehicle, comprising a vehicle frame and the above-mentioned 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 with an accommodating cavity having 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 disposed within the accommodating cavity. 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 its two ends are respectively connected to the shift fork and the reducer housing. The piston is located within the accommodating cavity and connected to the shift fork. The piston is provided with a boss that can slide along the axis of the transmission shaft so that the boss is inserted into the groove. This can shorten the axial dimension of the piston, allowing the differential lock assembly to be separated from the brake, thereby preventing interference between the two and affecting the freedom of vehicle layout. The differential assembly includes a differential case and bearings. The differential case is mounted on the reducer housing and features a protruding journal. The bearings are sleeved on the journals, which are equipped with face teeth. The sliding sleeve can move along the axis of the drive shaft to engage or disengage the face teeth with the sleeve. The bearings are configured to radially limit the face teeth and sleeve. When the drive axle assembly switches between unlocked and locked states, the face teeth on the differential case journal and the meshing teeth of the sleeve constantly move within the bearings along their axis, moving the face teeth of the differential case away from the brake. In the unlocked state, the axial position of the reducer housing's axial limit fork radially limits the bearings to the sleeve, eliminating the need to manually lock the differential lock assembly before assembling the axle shafts.

[0021] The vehicle provided by the present invention includes a vehicle frame and a drive axle assembly, the drive axle assembly being mounted on the vehicle frame. During the switching process between unlocked and locked states, the face teeth of the differential case journal and the meshing teeth of the sliding sleeve continuously move within the bearing along their axis, moving the face teeth of the differential case away from the brake. When the drive axle assembly is in the unlocked state, the axial position of the reducer case axial limit fork radially limits the sliding sleeve in the bearing, thereby eliminating the need for manual locking of the differential lock assembly before assembly of the axle shafts and ensuring accurate engagement with the differential lock switch. When the drive axle assembly is in the locked state, the piston boss can be embedded in the groove, shortening the piston's axial dimension and moving the differential lock assembly away from the brake, thereby preventing interference between the differential lock and the brake that could affect the freedom of 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 by an embodiment of the present invention;

[0027] Figure 6 A schematic structural diagram 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] Figure 9 A schematic structural diagram of an elastic member provided in an embodiment of the present invention;

[0031] Figure 10 A cross-sectional view of an end cap provided in an embodiment of the present invention;

[0032] Figure 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. Accommodation cavity; 111. First accommodation area; 112. Second accommodation 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. Drive 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. Stepped portion; 314. Snap-on component; 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 with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0038] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

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

[0040] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on those shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0041] like Figures 1-11As 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 is connected to the shift fork 22. The piston 25 is provided with a boss 251. 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 protruding 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 disengaged 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 housing 31 can be engaged with each other, the outer circumferential surface of the sliding gear sleeve 21 is provided with a ring groove, the fork-shaped end of the shift fork 22 is inserted into the ring groove, the connecting end of the shift fork 22 is provided with a hole, and the transmission shaft 23 is connected with the shift fork 22 through the hole of the connecting end. The elastic member 24 is 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 housing 1. The end face of the piston 25 is provided with a boss 251, the position corresponding to the boss 251 in the accommodating cavity 11 is provided with a groove 12, and the boss 251 is inserted 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 shaft neck 311, and at the same time, the boss 251 is separated from the groove 12, and at this time, the drive axle assembly is in an unlocked state. Conversely, when the differential lock switch is pressed, the shift fork 22 drives the transmission shaft 23 to slide in the opposite direction of the 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 shaft neck 311, and at the same time, the boss 251 is embedded in the groove 12, and at this time, the drive axle assembly is in a locked state, the axial dimension of the piston 25 can be shortened, the differential lock assembly 2 is away from the brake, and interference between the two is avoided, so as to affect the freedom degree of the whole vehicle arrangement. Moreover, during the switching process of the drive axle assembly in the unlocked and locked states, the meshing ends of the end face teeth 312 of the shaft neck 311 of the differential housing 31 and the sliding gear sleeve 21 always move along the axis direction in the bearing 32, so that the end face teeth 312 of the differential housing 31 are away from the brake, in the unlocked state, the axial position of the shift fork 22 is limited by the reducer housing 1 in the axial direction, so that the bearing 32 can limit the sliding gear sleeve 21 in the radial direction, so that the differential lock assembly 2 does not need to be manually locked before the half shaft is assembled, and accurate cooperation with the differential lock switch can be ensured.

[0043] Further, referring to Figures 1-4 , the differential assembly 3 further comprises an adjusting ring 33, 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 housing 31. Specifically, the central hole of the adjusting ring 33 is fixedly connected with the shaft neck 311 of the differential housing 31, and the two end faces of the adjusting ring 33 are respectively in contact with the inner side of the bearing 32 and the differential housing 31. Compared with the conventional adjusting ring 33 arranged on the outer side of the bearing 32, the axial arrangement space of the adjusting ring 33 is reduced, the shift fork 22 is close to the differential assembly, and thus is away from the brake.

[0044] Further, referring to Figure 7 and Figure 8The inner ring of the adjustment ring 33 is provided with a connection hole 331. This connection hole 331 has a stepped structure. The outer circumference of the shaft journal 311 is provided with a stepped portion 313. Along the circumference of the adjustment ring 33, the connection hole 331 connects to the stepped portion 313. Specifically, the stepped connection hole 331 of the adjustment ring 33 abuts the stepped portion 313 of the shaft diameter, further reducing the axial arrangement space for the adjustment ring 33, bringing the shift fork 22 closer to the differential assembly and away from the brake. The outer circumference of the adjustment ring 33 is provided with multiple assembly grooves for engaging with assembly tools.

[0045] Further, refer to Figure 2 and Figure 6 The differential assembly 3 also includes a bearing cap 34, which is mounted on the reducer housing 1. The bearing cap 34 has a limiting portion 341 and a semicircular hole 342. The inner circumferential wall of the semicircular hole 342 abuts the outer circumferential 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 the adjusting ring 33, and the outer end face of the bearing 32 abuts the limiting portion 341. Specifically, the bearing cap 34 is mounted on the reducer housing 1 via bolts. The semicircular hole 342 of the bearing cap 34 abuts the outer circumference of the bearing 32, and the limiting portion 341 of the bearing cap 34 abuts the outer end face of the bearing 32, thereby reducing the axial dimension of the differential assembly 3 and keeping it away from the brake.

[0046] Further, refer to Figure 4 The differential assembly 3 also 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 plurality of clips 314, which are spaced apart along the circumference of the adjusting ring 33. The locking plate 35 can be inserted between two adjacent clips 314. Specifically, the adjusting ring 33 is provided with a mounting surface, and the locking plate 35 is mounted on the mounting surface via bolts. The locking plate 35 can be inserted and engaged with the spaces between the plurality of clips 314. When the drive axle assembly switches between the unlocked and locked states, the adjusting ring 33 is connected to or separated from the differential case 31 through the insertion and engagement 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 interconnected. The first accommodating area 111 has a first circular hole 13, which is configured to be slidably connected to the piston 25. The first circular hole 13 is connected to the groove 12, which has an annular structure and is configured to be slidably inserted into 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 to the transmission shaft 23. When the differential lock switch is released, the shift fork 22, under the elastic action of the elastic member 24, can drive the transmission shaft 23 to slide within the second circular hole 14 and the third circular hole 15 along the axis of the transmission shaft 23. 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 the unlocked state. When the differential lock switch is pressed, the shift fork 22 drives the drive 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 engages with the end face teeth 312 of the shaft neck 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 make the differential lock assembly 2 away from the brake.

[0048] Further, refer to Figure 1 、 Figure 2 and Figure 10 The differential lock assembly 2 further includes an end cap 26 and a pipe joint 27. The end cap 26 is disposed at the opening of the first accommodating area 111. A mounting hole 261 is defined on the edge of the end cap 26. The pipe joint 27 is disposed within the mounting hole 261. The end cap 26 also defines a vent hole 262, which communicates with the mounting hole 261. Specifically, the end cap 26 is fixedly connected to the pipe joint 27 via the mounting hole 261. The vent hole 262 in the end cap 26 is used for ventilation. The pipe joint 27 is disposed on the side of the end cap 26, thereby shortening the axial dimension of the differential lock assembly 2.

[0049] Further, refer to Figure 1 、 Figure 2 and Figure 11 The differential lock assembly 2 also includes a pin 28. A blind hole 231 is defined at the end of the drive 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 an annular structure, annularly disposed 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 to the drive shaft 23 through the blind hole 231, and the other end of the pin 28 is engaged with the transition end surface of the piston 25 through the spherical end surface. This further shortens the axial dimension of the piston 25, allowing the differential lock assembly 2 to move away from the brake.

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

[0051] The embodiment also provides a vehicle comprising a vehicle frame and the above-mentioned drive axle assembly. Specifically, the flange surface of the decelerator and differential assembly is matched with the flange surface of the axle housing assembly and connected by distributed bolts, the brake assembly is matched with the brake flange of the axle housing assembly and connected by distributed bolts, and the two spline shafts of the half shaft are connected with the spline holes of the sliding tooth sleeve 21 of the decelerator and differential assembly and the half shaft gear, respectively. During the switching process of the unlocking and locking states of the drive axle assembly, the end surface tooth 312 of the shaft neck 311 of the differential housing 31 and the meshing end of the sliding tooth sleeve 21 always move in the axial direction of the bearing 32, so that the end surface tooth 312 of the differential housing 31 is away from the brake, and when the drive axle assembly is in the unlocking state, the axial position of the bearing 32 can be limited in the radial direction of the sliding tooth sleeve 21 by limiting the axial position of the yoke 22 of the decelerator housing 1, so that the differential lock assembly 2 does not need to be manually locked before the half shaft is assembled, and the accurate cooperation with the differential lock switch can be ensured. When the drive axle assembly is in the locking state, the boss 251 of the piston 25 can be embedded in the groove 12, the axial size of the piston 25 is shortened, and the differential lock assembly 2 is away from the brake.

[0052] Obviously, the above-mentioned embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. For those skilled in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present application. It is unnecessary and impossible to enumerate all the embodiments. Any modification, equivalent substitution and improvement within the spirit and principle of the present application should be included in the protection scope of the claims of the present application.

Claims

1. Drive axle assembly, characterized in that: include: A reducer housing (1), wherein the reducer housing (1) is provided with an accommodating cavity (11), and the accommodating cavity (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 capable of sliding 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 capable of moving along the axial direction of the transmission shaft (23) so as to enable the end face tooth (312) to engage with or disengage from the sliding gear sleeve (21), and the bearing (32) being configured to radially limit the end face tooth (312) and the sliding gear sleeve (21); The differential assembly (3) further includes 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).

2. The drive axle assembly according to claim 1, 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).

3. The drive axle assembly according to claim 1, characterized in that: 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 adjusting ring (33), and the outer end face of the bearing (32) abuts against the limiting portion (341).

4. The drive axle assembly according to claim 1, characterized in that: 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). There are multiple clamping members (314). 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).

5. The drive axle assembly according to claim 1, characterized in that: The accommodating chamber (11) includes a first accommodating area (111) and a second accommodating area (112) which are arranged to communicate with each other, the first accommodating area (111) has a first circular hole (13), 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), the groove (12) is annular, and 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), the second circular hole (14) and the third circular hole (15) are configured to be slidably connected to the transmission shaft (23).

6. The drive axle assembly according to claim 5, characterized in that: The differential lock assembly (2) further comprises an end cover (26) and a pipe joint (27), wherein the end cover (26) is arranged at the opening of the first accommodating area (111), a mounting hole (261) is provided on the edge of the end cover (26), the pipe joint (27) is arranged in the mounting hole (261), and the end cover (26) is provided with a vent hole (262), and the vent hole (262) is connected to the mounting hole (261).

7. The drive axle assembly according to claim 1, characterized in that: 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 annular, the boss (251) is arranged around the transition end surface, and the spherical end surface is connected to the transition end surface.

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

9. A vehicle, characterized in that It comprises a vehicle frame and the drive axle assembly according to any one of claims 1 to 8, wherein the drive axle assembly is mounted on the vehicle frame.

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