Drive axle assembly and vehicle

Abstract

The invention relates to the technical field of drive axles, and particularly discloses a drive axle assembly and a vehicle, and the drive axle assembly comprises a speed reducer shell and a differential lock assembly. The shifting fork shaft is arranged in the containing cavity in a sliding mode, the first piston shaft section is in sliding abutting fit or clearance fit with the containing cavity, and gear oil is contained in the containing cavity, so that when the first piston shaft section and the second piston shaft section move, the first piston shaft section can be driven by the gear oil to move out of the containing cavity. Meanwhile, due to the fact that the second piston shaft section is in clearance fit with the containing cavity, clamping stagnation between the second piston shaft section and the containing cavity can be further avoided. By means of the drive axle assembly, the problem that a piston of a differential lock is blocked due to the fact that the structural design of the differential lock in a drive axle assembly in the prior art is unreasonable is effectively solved.

Description

Technical Field

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

[0002] Currently, differential locks in heavy-duty drive axle assemblies are primarily used to escape obstacles on muddy and slippery roads. These devices typically consist of a movable gear sleeve, a shift fork, a return spring, a shift fork shaft, a cylinder, a copper sleeve, a piston, an O-ring, an indicator light switch, and an air intake connector. However, in related technologies, improper differential lock structural design can lead to piston jamming, which in turn shortens the differential lock's service life. Summary of the Invention

[0003] The object of the present invention is to provide a drive axle assembly and a vehicle to solve the problem of irrational structural design of the differential lock in the drive axle assembly in the prior art, which causes the piston of the differential lock to become stuck.

[0004] On the one hand, the present invention provides a drive axle assembly, which includes: a reducer housing having an accommodating chamber; a differential lock assembly, including a shift fork shaft, a shift fork rod, a piston body and a seal, wherein the shift fork rod is arranged on the shift fork shaft, and the shift fork shaft is slidably arranged in the accommodating chamber, the piston body is connected to the shift fork shaft, the piston body is located in the accommodating chamber, the piston body can move along the axial direction of the shift fork shaft to drive the shift fork shaft to move, the seal is arranged between the piston body and the accommodating chamber, and can seal the gap between the piston body and the accommodating chamber, the seal divides the piston body into a first piston shaft segment and a second piston shaft segment connected to each other, the first piston shaft segment is in sliding abutment fit or clearance fit with the accommodating chamber, and the second piston shaft segment is in clearance fit with the accommodating chamber.

[0005] As an optional technical solution for the drive axle assembly, the accommodating chamber includes a first accommodating chamber and a second accommodating chamber that are interconnected, and the shift fork shaft includes a first shaft segment, a second shaft segment and a third shaft segment that are connected in sequence, and the diameters of the first shaft segment, the second shaft segment and the third shaft segment increase in sequence, and the first shaft segment is slidably arranged in the first accommodating chamber, the shift fork rod is sleeved on the second shaft segment, and the third shaft segment is connected to the first piston shaft segment, and the first piston shaft segment is in sliding abutment fit or clearance fit with the second accommodating chamber, and the second piston shaft segment is in clearance fit with the second accommodating chamber.

[0006] As an optional technical solution for the drive axle assembly, the first shaft section includes a first section and a second section that are connected to each other, the diameter of the first section is smaller than the diameter of the second section, the first section can pass through the first accommodating cavity, the second section and the first accommodating cavity are in sliding abutment fit, the second section has a first chamfered corner at one end facing the first section, the first piston shaft section has a second chamfered corner at one end facing the third shaft section, and the first piston shaft section and the second accommodating cavity are in sliding abutment fit.

[0007] As an optional technical solution for the drive axle assembly, the first shaft section includes a first section and a second section connected to each other, the diameter of the first section is smaller than the diameter of the second section, the outer peripheral surface of the first section and the outer peripheral surface of the first piston shaft section are both arc surfaces, the first section and the first accommodating cavity are in sliding abutment fit, and the first piston shaft section and the second accommodating cavity are in sliding abutment fit.

[0008] As an optional technical solution for the drive axle assembly, the second accommodating chamber includes a first cavity and a second cavity that are interconnected, the first cavity and the first accommodating chamber are connected, the third shaft segment and the first cavity are in sliding abutment fit, the first piston shaft segment and the second piston shaft segment are both located in the second cavity, and the first piston shaft segment and the second piston shaft segment are both clearance-fitted with the second cavity.

[0009] As an optional technical solution for the drive axle assembly, the drive axle assembly further includes an adjusting gasket, which is sleeved on the second shaft segment, and whose two ends respectively abut against the fork rod and the end surface of the third shaft segment facing the first shaft segment.

[0010] As an optional technical solution of the drive axle assembly, the drive axle assembly further includes a return spring, which is sleeved on the second shaft segment, and whose two ends respectively abut against the shift fork rod and the inner wall of the first accommodating cavity.

[0011] As an optional technical solution for the drive axle assembly, the drive axle assembly also includes a bushing, which is located in the accommodating cavity, and the outer wall of the bushing is connected to the inner wall of the accommodating cavity. The first piston shaft segment and the second piston shaft segment are both located in the cavity of the bushing and are gap-fitted with the inner wall of the bushing.

[0012] As an optional technical solution for the drive axle assembly, the piston body and the fork shaft are a fixedly connected integral structure.

[0013] On the other hand, the present invention provides a vehicle, comprising a vehicle frame and the drive axle assembly according to any one of the above solutions, wherein the drive axle assembly is mounted on the vehicle frame.

[0014] The beneficial effects of the present invention are:

[0015] The present invention provides a drive axle assembly, comprising a reducer housing and a differential lock assembly. The reducer housing has a receiving chamber, and the differential lock assembly includes a shift fork shaft, a shift fork rod, a piston body, and a seal. In the drive axle assembly of the present invention, the piston body is positioned within the receiving chamber, and a seal seals the gap between the piston body and the receiving chamber. The seal also divides the piston body into a first piston shaft segment and a second piston shaft segment that are interconnected. With this arrangement, the shift fork shaft is slidably positioned within the receiving chamber, and the first piston shaft segment is provided with a sliding abutment fit or a clearance fit with the receiving chamber. Because gear oil is present within the receiving chamber, when the first and second piston shaft segments move, the first piston shaft segment, due to the gear oil, will not become stuck with the receiving chamber during movement. Furthermore, because the second piston shaft segment has a clearance fit with the receiving chamber, this further prevents the second piston shaft segment from becoming stuck with the receiving chamber. The drive axle assembly of the present invention effectively solves the problem of differential lock piston sticking in prior drive axle assemblies, which is caused by the irrational structural design of the differential lock. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A cross-sectional view of the drive axle assembly structure in the first embodiment of the present invention;

[0017] Figure 2 for Figure 1 Cross-sectional view of the middle shift fork shaft and piston body;

[0018] Figure 3 A cross-sectional view of a drive axle assembly structure in a second embodiment of the present invention;

[0019] Figure 4 for Figure 3 Cross-sectional view of the middle shift fork shaft and piston body;

[0020] Figure 5 A cross-sectional view of a drive axle assembly structure in a third embodiment of the present invention;

[0021] Figure 6 A cross-sectional view of a drive axle assembly structure according to a fourth embodiment of the present invention;

[0022] Figure 7 A cross-sectional view of a drive axle assembly structure in a fifth embodiment of the present invention;

[0023] Figure 8 It is a cross-sectional view of the structure of the drive axle assembly in the sixth embodiment of the present invention.

[0024] In the picture:

[0025] 1. Reducer housing; 11. Accommodation chamber; 111. First accommodation chamber; 112. Second accommodation chamber; 1122. Second cavity;

[0026] 2. Differential lock assembly; 21. Shift fork shaft; 211. First shaft section; 2111. First section; 2112. Second section; 2113. First rounded corner; 212. Second shaft section; 213. Third shaft section; 22. Shift fork rod; 23. Piston body; 231. First piston shaft section; 2311. Second rounded corner; 232. Second piston shaft section; 24. Seal;

[0027] 4. Adjust the gasket;

[0028] 5. Return spring;

[0029] 6. Bushing;

[0030] 7. Sensor switch;

[0031] 8. Piston end cover;

[0032] 9. Bolts. DETAILED DESCRIPTION

[0033] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0036] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0037] like Figures 1 to 6 As shown, this embodiment provides a drive axle assembly, which includes a reducer housing 1 and a differential lock assembly 2. The reducer housing 1 has an accommodating chamber 11; the differential lock assembly 2 includes a shift fork shaft 21, a shift fork rod 22, a piston body 23, and a seal 24. The shift fork rod 22 is disposed on the shift fork shaft 21, which is slidably disposed within the accommodating chamber 11. The piston body 23 is connected to the shift fork shaft 21 and is located within the accommodating chamber 11. The piston body 23 can move along the axis of the shift fork shaft 21 to drive the shift fork shaft 21 to move. The seal 24 is disposed between the piston body 23 and the accommodating chamber 11 and can seal the gap between the piston body 23 and the accommodating chamber 11. The seal 24 divides the piston body 23 into a first piston shaft segment 231 and a second piston shaft segment 232, which are interconnected. The first piston shaft segment 231 is in sliding abutment engagement or clearance engagement with the accommodating chamber 11, while the second piston shaft segment 232 is in clearance engagement with the accommodating chamber 11.

[0038] With the drive axle assembly of the present invention, the piston body 23 is located in the accommodating chamber 11, and the gap between the piston body 23 and the accommodating chamber 11 can be sealed by the seal 24. At the same time, the seal 24 divides the piston body 23 into a first piston shaft segment 231 and a second piston shaft segment 232 that are connected to each other. In this arrangement, by sliding the fork shaft 21 in the accommodating chamber 11, and making the first piston shaft segment 231 and the accommodating chamber 11 slide and abut or have a clearance fit, since there is gear oil in the accommodating chamber 11, when the first piston shaft segment 231 and the second piston shaft segment 232 move, the first piston shaft segment 231 will not get stuck with the accommodating chamber 11 due to the effect of the gear oil. At the same time, since the second piston shaft segment 232 has a clearance fit with the accommodating chamber 11, this can further prevent the second piston shaft segment 232 from getting stuck with the accommodating chamber 11. The drive axle assembly of the present invention effectively solves the problem of differential lock piston sticking caused by the unreasonable structural design of the differential lock in the drive axle assembly in the prior art.

[0039] In this embodiment, the accommodating chamber 11 includes a first accommodating chamber 111 and a second accommodating chamber 112 that are interconnected. The shift fork shaft 21 includes a first shaft segment 211, a second shaft segment 212, and a third shaft segment 213 that are sequentially connected. The diameters of the first shaft segment 211, the second shaft segment 212, and the third shaft segment 213 increase in sequence. The first shaft segment 211 is slidably disposed within the first accommodating chamber 111, the shift fork rod 22 is sleeved onto the second shaft segment 212, and the third shaft segment 213 is connected to the first piston shaft segment 231. The first piston shaft segment 231 and the second accommodating chamber 112 are in a sliding abutment fit or a clearance fit, while the second piston shaft segment 232 and the second accommodating chamber 112 are in a clearance fit. This arrangement allows for smooth movement of the first piston shaft segment 231 and the second piston shaft segment 232.

[0040] like Figure 1 and Figure 2 As shown, in the first embodiment of the present invention, the first shaft segment 211 includes a first segment 2111 and a second segment 2112 that are connected to each other, the diameter of the first segment 2111 is smaller than the diameter of the second segment 2112, the first segment 2111 can pass through the first accommodating chamber 111, and the second segment 2112 and the first accommodating chamber 111 are slidably abutted against each other, wherein the second segment 2112 has a first chamfered corner at one end facing the first segment 2111, so that when the second segment 2112 slides in the first accommodating chamber 111, it can play a guiding role, so that the second segment 2112 can move smoothly; similarly, the first piston shaft segment 231 has a second chamfered corner 2311 at one end facing the third shaft segment 213, so that when the first piston shaft segment 231 slides in the second accommodating chamber 112, smooth movement can be guaranteed to avoid jamming when the piston body 23 moves.

[0041] like Figure 3 and Figure 4 As shown, in the second embodiment of the present invention, the first shaft segment 211 includes a first segment 2111 and a second segment 2112 connected to each other, and the diameter of the first segment 2111 is smaller than the diameter of the second segment 2112. The outer circumferential surface of the first segment 2111 and the outer circumferential surface of the first piston shaft segment 231 are both arcuate surfaces. Thus, when the first segment 2111 and the first accommodating cavity 111 are in sliding contact and engagement, the first segment 2111 can move smoothly. Similarly, when the first piston shaft segment 231 and the second accommodating cavity 112 are in sliding contact and engagement, the first piston shaft segment 231 can move smoothly, effectively preventing the piston body 23 from getting stuck during movement.

[0042] like Figure 5 As shown, in the third embodiment of the present invention, the second accommodating chamber 112 includes a first cavity and a second cavity 1122 that are interconnected. The first cavity is connected to the first accommodating chamber 111, the third shaft segment 213 is in sliding contact with the first cavity, the first piston shaft segment 231 and the second piston shaft segment 232 are both located in the second cavity 1122, and the first piston shaft segment 231 and the second piston shaft segment 232 are both in clearance fit with the second cavity 1122. With this arrangement, the third shaft segment 213 can be in sliding contact with the first cavity, the first shaft segment 211 is also slidably arranged in the first accommodating chamber 111, and at the same time, the first piston shaft segment 231 and the second piston shaft segment 232 are both in clearance fit with the second cavity 1122, thereby ensuring that the first piston shaft segment 231 and the second piston shaft segment 232 will not get stuck with the second cavity 1122 when moving.

[0043] like Figure 6 As shown, in the fourth embodiment of the present invention, the drive axle assembly further includes a bushing 6, which is positioned within the accommodating cavity, with the outer wall of the bushing 6 connected to the inner wall of the accommodating cavity. Furthermore, the first piston shaft segment 231 and the second piston shaft segment 232 are both positioned within the cavity of the bushing 6 and are loosely fitted with the inner wall of the bushing 6. With this arrangement, when the fork shaft 21 is subjected to a turning force from the fork rod 22, the first piston shaft segment 231 and the second piston shaft segment 232 contact the bushing 6 with a low friction coefficient, thus avoiding any sticking caused by a high friction coefficient or poor coaxiality.

[0044] In the above embodiment, the piston body 23 and the fork shaft 21 are fixedly connected as an integral structure. This arrangement can ensure smooth movement of the piston body 23 while reducing production costs.

[0045] In this embodiment, the drive axle assembly further includes an adjusting washer 4, which is sleeved onto the second shaft segment 212. The ends of the adjusting washer 4 respectively abut against the end surface of the shift fork lever 22 and the end surface of the third shaft segment 213 facing the first shaft segment 211. By providing the adjusting washer 4, the position of the shift fork lever 22 can be adjusted according to actual conditions.

[0046] Furthermore, the drive axle assembly further includes a return spring 5, which is sleeved on the second shaft segment 212, with both ends of the return spring 5 respectively abutting against the shift fork rod 22 and the inner wall of the first accommodating cavity 111. This arrangement facilitates the return of the shift fork rod 22.

[0047] In this embodiment, the drive axle assembly further includes a sensor switch 7, a piston end cover 8, and bolts 9. The piston end cover 8 is mounted on the reducer housing 1 and secured to the reducer housing 1 via bolts 9. The sensor switch 7 can be mounted on either the piston end cover 8 or the reducer housing 1. When high-pressure gas pushes the piston body 23 toward the side of the shift fork lever 22, the shift fork lever 22 shifts the sliding gear sleeve into engagement with the fixed gear sleeve, at which point the contacts of the sensor switch 7 separate from the piston body 23. When the high-pressure gas is exhausted, the shift fork lever 22 shifts the sliding gear sleeve into engagement with the fixed gear sleeve, at which point the contacts of the sensor switch 7 come into contact with the piston body 23.

[0048] Or, as Figure 7 As mentioned above, in the fifth embodiment of the present invention, the piston body 23 and the fork shaft 21 are of a separate structure. The two axial diameters of the fork shaft 21 cooperate with the accommodating chamber 11. The piston body 23 is not affected by the turning force of the fork rod 22, thereby preventing the piston body 23 from getting stuck. At the same time, the sensor switch 7 is away from the brake cylinder, thereby resolving the interference problem. Among them, the adjustment gasket 4 is arranged between the fork shaft 21 and the piston body 23. The sensor switch 7 is installed on the reducer housing 1 and is located on the side of the fork rod 22 facing the piston body 23. When the high-pressure gas pushes the piston body 23 toward the side facing the fork rod 22, the fork rod 22 shifts the sliding gear sleeve to engage with the fixed gear sleeve. At this time, the contact of the sensor switch 7 is separated from the fork rod 22. When the high-pressure gas is discharged, the fork rod 22 shifts the sliding gear sleeve to separate from the fixed gear sleeve. At this time, the contact of the sensor switch 7 is in contact with the fork rod 22.

[0049] Or, as Figure 8In the sixth embodiment of the present invention, the piston body 23 and the fork shaft 21 are separate structures. The two axial diameters of the fork shaft 21 cooperate with the accommodating cavity 11. The piston body 23 is not affected by the turning force of the fork rod 22, thus preventing the piston body 23 from getting stuck. At the same time, the sensor switch 7 is embedded in the groove of the reducer housing 1, solving the interference problem and the problem of the sensor switch 7 bumping. Among them, the adjustment washer 4 is arranged between the fork shaft 21 and the piston body 23. The sensor switch 7 is installed on the reducer housing 1 and is located on the side of the fork rod 22 away from the piston body 23. When the high-pressure gas pushes the piston body 23 toward the side of the fork rod 22, the fork rod 22 shifts the sliding gear sleeve to engage with the fixed gear sleeve. At this time, the contact of the sensor switch 7 contacts the fork rod 22. When the high-pressure gas is discharged, the fork rod 22 shifts the sliding gear sleeve to separate from the fixed gear sleeve. At this time, the contact of the sensor switch 7 separates from the fork rod 22.

[0050] This embodiment also provides a vehicle, comprising a vehicle frame and the drive axle assembly of the above-mentioned solution, wherein the drive axle assembly is mounted on the vehicle frame. In the vehicle of the present invention, a piston body 23 is located in an accommodating chamber 11, and a seal 24 can seal the gap between the piston body 23 and the accommodating chamber 11. At the same time, the seal 24 divides the piston body 23 into a first piston shaft segment 231 and a second piston shaft segment 232 that are connected to each other. In this arrangement, by sliding the shift fork shaft 21 in the accommodating chamber 11, and making the first piston shaft segment 231 and the accommodating chamber 11 slide in abutment or with a clearance fit, since there is gear oil in the accommodating chamber 11, when the first piston shaft segment 231 and the second piston shaft segment 232 move, the first piston shaft segment 231 will not get stuck with the accommodating chamber 11 due to the action of the gear oil. At the same time, since the second piston shaft segment 232 has a clearance fit with the accommodating chamber 11, it can further prevent the second piston shaft segment 232 from getting stuck with the accommodating chamber 11. The vehicle of the present invention effectively solves the problem of the differential lock piston being stuck due to the unreasonable structural design of the differential lock in the drive axle assembly in the prior art.

[0051] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A drive axle assembly, characterized in that: include: A reducer housing (1) having an accommodating cavity (11); A differential lock assembly (2) includes a fork shaft (21), a fork rod (22), a piston body (23) and a seal (24), wherein the fork rod (22) is arranged on the fork shaft (21), the fork shaft (21) is slidably arranged in the accommodating cavity (11), the piston body (23) is connected to the fork shaft (21), the piston body (23) is located in the accommodating cavity (11), and the piston body (23) can move along the axial direction of the fork shaft (21) to drive the fork shaft (21) to move. The sealing member (24) is arranged between the piston body (23) and the accommodating chamber (11) and is capable of sealing the gap between the piston body (23) and the accommodating chamber (11). The sealing member (24) divides the piston body (23) into a first piston shaft segment (231) and a second piston shaft segment (232) which are connected to each other. The first piston shaft segment (231) and the accommodating chamber (11) are in sliding contact or clearance fit, and the second piston shaft segment (232) and the accommodating chamber (11) are in clearance fit.

2. The drive axle assembly according to claim 1, characterized in that: The accommodating chamber (11) includes a first accommodating chamber (111) and a second accommodating chamber (112) that are interconnected. The shift fork shaft (21) includes a first shaft segment (211), a second shaft segment (212), and a third shaft segment (213) that are sequentially connected. The diameters of the first shaft segment (211), the second shaft segment (212), and the third shaft segment (213) increase sequentially. The first shaft segment (211) is slidably disposed in the first accommodating chamber (111). The shift fork rod (22) is sleeved on the second shaft segment (212). The third shaft segment (213) is connected to the first piston shaft segment (231). The first piston shaft segment (231) and the second accommodating chamber (112) are in sliding contact or clearance fit. The second piston shaft segment (232) and the second accommodating chamber (112) are in clearance fit.

3. The drive axle assembly according to claim 2, characterized in that: The first shaft section (211) includes a first section (2111) and a second section (2112) connected to each other, the diameter of the first section (2111) is smaller than the diameter of the second section (2112), the first section (2111) can pass through the first accommodating cavity (111), the second section (2112) and the first accommodating cavity (111) are in sliding contact with each other, the second section (2112) has a first chamfered corner at one end facing the first section (2111), the first piston shaft section (231) has a second chamfered corner (2311) at one end facing the third shaft section (213), and the first piston shaft section (231) and the second accommodating cavity (112) are in sliding contact with each other.

4. The drive axle assembly according to claim 2, characterized in that: The first shaft section (211) includes a first section (2111) and a second section (2112) connected to each other, the diameter of the first section (2111) is smaller than the diameter of the second section (2112), the outer peripheral surface of the first section (2111) and the outer peripheral surface of the first piston shaft section (231) are both arc surfaces, the first section (2111) and the first accommodating cavity (111) are in sliding abutment fit, and the first piston shaft section (231) and the second accommodating cavity (112) are in sliding abutment fit.

5. The drive axle assembly according to claim 2, characterized in that: The second accommodating chamber (112) includes a first cavity and a second cavity (1122) that are connected to each other, the first cavity and the first accommodating chamber (111) are connected, the third shaft segment (213) and the first cavity are in sliding abutment fit, the first piston shaft segment (231) and the second piston shaft segment (232) are both located in the second cavity (1122), and the first piston shaft segment (231) and the second piston shaft segment (232) are both in clearance fit with the second cavity (1122).

6. The drive axle assembly according to claim 2, characterized in that: The drive axle assembly further comprises an adjusting gasket (4), wherein the adjusting gasket (4) is sleeved on the second shaft segment (212), and the two ends of the adjusting gasket (4) respectively abut against the shift fork rod (22) and the end surface of the third shaft segment (213) facing the first shaft segment (211).

7. The drive axle assembly according to claim 2, characterized in that: The drive axle assembly further comprises a return spring (5), the return spring (5) being sleeved on the second shaft section (212), and the two ends of the return spring (5) respectively abutting against the shift fork rod (22) and the inner wall of the first accommodating cavity (111).

8. The drive axle assembly according to claim 1, characterized in that: The drive axle assembly also includes a bushing (6), which is located in the accommodating cavity. The outer wall of the bushing (6) is connected to the inner wall of the accommodating cavity. The first piston shaft section (231) and the second piston shaft section (232) are both located in the cavity of the bushing (6) and are clearance-matched with the inner wall of the bushing (6).

9. The drive axle assembly according to claim 1, characterized in that: The piston body (23) and the shift fork shaft (21) are an integral structure that is fixedly connected.

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.

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