CN219487078U - Driving axle swing frame assembly and engineering machinery - Google Patents

Abstract

The utility model provides a drive axle swing frame assembly and engineering machinery, and relates to the technical field of engineering machinery. The drive axle swing frame assembly comprises a support assembly, a swing frame and an end cover. The support assembly is provided with a flange; the swing frame is provided with a shaft hole matched with the support assembly, the swing frame is rotationally sleeved on the support assembly, the far end surface of the shaft hole is provided with a first limit groove, the near end surface of the shaft hole is provided with a second limit groove, the flange is arranged in the second limit groove, and the far end surface of the flange is abutted with the bottom of the second limit groove; the end cover is detachably connected to the far end surface of the support assembly and is arranged in the first limiting groove, and an adjusting gasket is arranged between the end cover and the groove bottom of the first limiting groove. The utility model can solve the problem of overlarge axial movement of the frame in the prior art and has the effect of greatly reducing the axial movement of the swing frame.

Description

Driving axle swing frame assembly and engineering machinery

Technical Field

The utility model relates to the technical field of engineering machinery, in particular to a drive axle swing frame assembly and engineering machinery.

Background

In a work machine, such as a loader, the rear drive axle is connected to the frame by means of a front and a rear swing frame. The two swing frames and the frame are provided with connecting holes, and the frame is connected with the two swing frames through bolts. The connecting holes of the frame often have deviation, and after the connecting holes are connected with the two swinging frames, the two swinging frames are caused to shift in position, so that the defects are caused, and the defects are mainly represented by front-back movement of the vehicle body in the acceleration and braking processes of the vehicle. Therefore, it is necessary to limit the rear swing frame in the axial direction, so as to reduce the amount of play of the vehicle body during acceleration or braking.

In the prior art, in order to solve this technical problem, a front thrust washer is provided between the seat assembly and the swing frame, and a rear thrust washer is provided between the end cover and the seat assembly.

In the technical scheme, the control of the axial movement of the swing frame is influenced by the dimensional tolerance of at least five parts, and the problem of overlarge axial movement of the frame still exists.

Disclosure of Invention

The utility model aims to overcome the defect of overlarge axial movement of a frame in a drive axle swing frame assembly in the prior art, thereby providing the drive axle swing frame assembly and engineering machinery.

In order to solve the above problems, the present utility model provides a swing frame assembly of a drive axle, which comprises a support assembly, a swing frame and an end cover. The support assembly is provided with a flange; the swing frame is provided with a shaft hole matched with the support assembly, the swing frame is rotationally sleeved on the support assembly, the far end surface of the shaft hole is provided with a first limit groove, the near end surface of the shaft hole is provided with a second limit groove, the flange is arranged in the second limit groove, and the far end surface of the flange is abutted with the bottom of the second limit groove; the end cover is detachably connected to the far end surface of the support assembly and is arranged in the first limiting groove, and an adjusting gasket is arranged between the end cover and the groove bottom of the first limiting groove.

Optionally, a first wear-resistant pad is arranged between the end cover and the bottom of the first limit groove, and the inner diameter of the first wear-resistant pad is larger than the outer diameter of the adjusting gasket; a second wear-resisting pad is arranged between the flange and the bottom of the second limit groove.

Optionally, an oil filling hole is formed in the swing frame and is communicated with the first limiting groove and the second limiting groove.

Optionally, the distance between the distal end surface of the adjusting pad and the bottom of the first limiting groove is greater than the distance between the distal end surface of the first wear pad and the bottom of the first limiting groove.

Optionally, a first sealing groove is arranged between the outer circumferential surface of the end cover and the side wall of the first limiting groove, and a first sealing ring is arranged in the first sealing groove.

Optionally, a second sealing groove is arranged between the outer circumferential surface of the flange and the side wall of the second limiting groove, and a second sealing ring is arranged in the second sealing groove.

Optionally, the support assembly includes support body and bush axle, and the proximal end face of bush axle is connected with the distal end face of support body, and the flange is located the proximal end of bush axle, and the shaft hole and the bush axle cooperation of swing frame, swing frame suit are epaxial in the bush.

Optionally, corresponding mounting holes are formed in the end cover, the bushing shaft and the support body, and the end cover, the bushing shaft and the support body are connected through bolts; or, the bushing shaft and the support body are integrally arranged, and the end cover is detachably connected to the distal end face of the bushing shaft through bolts.

Optionally, a bushing is sleeved between the outer peripheral wall of the bushing shaft and the inner peripheral wall of the shaft hole.

The utility model further provides engineering machinery, which comprises a drive axle, wherein the front end or the rear end of the drive axle is provided with the drive axle swing frame assembly according to any one of the technical schemes.

The utility model has the following advantages:

1. by utilizing the technical scheme of the utility model, the swing frame is sleeved on the support assembly in a rotating way through the shaft hole, and can swing around the support assembly when being subjected to vertical load; at the far end of the swing frame, the end cover is arranged in the first limit groove, the adjusting gasket is abutted with the near end surface of the end cover and the groove bottom of the first limit groove, so that the axial limit of the far end of the swing frame is realized, and at the near end of the swing frame, the flange of the swing frame is arranged in the second limit groove, so that the far end surface of the flange is abutted with the groove bottom of the second limit groove, the axial limit of the near end is realized, and the near end and the far end are matched together, so that the axial limit of the two ends of the swing frame is realized; the adjusting gaskets are arranged between the end cover and the bottom of the first limiting groove, the sum of the tolerances of the two ends of the swinging frame along the axial direction can be compensated by replacing the adjusting gaskets with different thicknesses, and the adjusting gaskets with different thicknesses are selected according to different tolerance ranges by only assembling one adjusting gasket at the far end of the swinging frame, so that the axial channeling of the swinging frame can be controlled more accurately, the axial channeling of the swinging frame can be controlled in a very small range, such as the channeling is less than 0.03mm, and the axial channeling of the swinging frame is greatly reduced.

2. The first wear-resistant pad and the second wear-resistant pad are arranged, so that abrasion between two ends of the shaft hole and the flange and the end cover can be prevented in the swinging process of the swinging frame.

3. Because the first wear-resistant pad and the second wear-resistant pad are arranged, the wear-resistant requirement of contact surfaces at two ends of the shaft hole of the swinging frame is met, and the adjusting gasket can be subjected to no heat treatment or surface coating treatment, so that the cost is low.

4. Because the distance between the distal end face of the adjusting gasket and the bottom of the first limit groove is greater than the distance between the distal end face of the first wear-resisting pad and the bottom of the first limit groove, gaps exist between the first wear-resisting pad and the end cover as well as between the second wear-resisting pad and the flange as well as between the second wear-resisting pad and the second limit groove, the swing clamping of the swing frame can be prevented, the one-time assembly success can be realized, the repairing times are reduced, and the repairing cost is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 shows a schematic structural diagram of a swing frame assembly of a drive axle according to an embodiment of the present utility model;

FIG. 2 illustrates a cross-sectional view of a drive axle swing frame assembly provided in an embodiment of the present utility model along an axial direction;

fig. 3 shows a schematic structural view of the swing frame of fig. 2;

FIG. 4 shows an enlarged view of the structure at A in FIG. 2;

fig. 5 shows an enlarged view of the structure at B in fig. 2.

Reference numerals illustrate:

1. a support assembly; 11. a flange; 12. a support body; 2. a swing frame; 21. a shaft hole; 22. a first limit groove; 23. the second limit groove; 24. a front swing frame; 25. a rear swing frame; 26. a first sealing groove; 27. a second sealing groove; 3. an end cap; 4. adjusting the gasket; 5. a first wear pad; 6. a second wear pad; 7. a first seal ring; 8. a second seal ring; 9. a bushing shaft; 10. a bolt; 20. a bushing; 30. a drive axle; 40. and an oil filling hole.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

For the purpose of illustrating the concepts of the utility model, the drawings and detailed description are to be regarded as illustrative in nature and not as restrictive.

Example 1

A drive axle swing frame assembly, referring to figures 1-5, includes a carrier assembly 1, a swing frame 2 and an end cap 3. The support assembly 1 is provided with a flange 11; the swing frame 2 is provided with a shaft hole 21 matched with the support assembly 1, the swing frame 2 is rotatably sleeved on the support assembly 1, a first limit groove 22 is formed in the far end surface of the shaft hole 21, a second limit groove 23 is formed in the near end surface of the shaft hole 21, the flange 11 is arranged in the second limit groove 23, and the far end surface of the flange 11 is abutted with the groove bottom of the second limit groove 23; the end cover 3 is detachably connected to the distal end surface of the support assembly 1 and is arranged in the first limit groove 22, and an adjusting gasket 4 is arranged between the end cover 3 and the bottom of the first limit groove 22.

The "proximal surface" refers to the surface on the side closer to the drive axle 30, and the "distal surface" refers to the surface on the side farther from the drive axle 30.

By utilizing the technical scheme of the utility model, the swing frame 2 is sleeved on the support assembly 1 in a rotating way through the shaft hole 21, and the swing frame 2 can swing around the support assembly 1 when being subjected to vertical load; at the far end of the swinging frame 2, as the end cover 3 is arranged in the first limit groove 22, and the adjusting gasket 4 is abutted with the near end surface of the end cover 3 and the groove bottom of the first limit groove 22, the axial limit of the far end of the swinging frame 2 is realized, and at the near end of the swinging frame 2, as the flange 11 of the swinging frame 2 is arranged in the second limit groove 23, the far end surface of the flange 11 is abutted with the groove bottom of the second limit groove 23, the axial limit of the near end is realized, and the near end and the far end are matched together, so that the axial limit of the two ends of the swinging frame 2 is realized; the adjusting gaskets 4 are only arranged between the end cover 3 and the bottom of the first limiting groove 22, the axial tolerance sum of the front end and the rear end of the swinging frame 2 can be compensated by replacing the adjusting gaskets 4 with different thicknesses, and the axial tolerance sum of the swinging frame 2 can be controlled within a small range, for example, the play is less than 0.03mm due to the fact that only one adjusting gasket 4 is assembled at the far end of the swinging frame 2, so that the axial play of the swinging frame 2 is greatly reduced. Wherein "vertical" refers to an axial direction perpendicular to the swing frame 2.

In the drive axle swing frame assembly provided by the embodiment of the utility model, the adjusting gasket 4 is used for adjusting the axial movement amount of the swing frame 2, so that the axial movement amount of the swing frame 2 can be conveniently and more accurately limited. The adjusting pad 4 can be provided with various specifications, and the adjusting pads 4 with different specifications have different thicknesses. During assembly, the adjusting gaskets 4 with different thicknesses are selected according to different tolerance ranges, and the axial movement amount of the swinging frame 2 is controlled in a smaller range through one adjusting gasket 4, so that after the whole vehicle is assembled, the movement amount of the axle and the vehicle frame is limited in a smaller range during starting or braking of the whole vehicle, and the influence caused by the position error of the vehicle frame mounting hole is avoided. The assembly of the adjusting gasket 4 can be realized on the axle assembly without being carried out on the whole vehicle, and the assembly is simple and reliable.

Optionally, referring to fig. 2, in combination with fig. 3 and 4, a first wear pad 5 is disposed between the end cover 3 and the bottom of the first limiting groove 22, and the inner diameter of the first wear pad 5 is greater than the outer diameter of the adjustment gasket 4. Specifically, the adjustment pad 4 is disposed in the inner ring of the first wear pad 5. The provision of the first wear pad 5 helps to prevent wear between the proximal face of the end cap 3 and the bottom of the first limiting groove 22 during oscillation of the oscillating frame 2.

Optionally, referring to fig. 2, in combination with fig. 3 and 4, a second wear pad 6 is provided between the flange 11 and the bottom of the second limiting groove 23. Likewise, the provision of the second wear pad 6 helps to prevent wear between the distal end face of the flange 11 and the bottom of the second limiting groove 23 during oscillation of the oscillating frame 2.

Optionally, referring to fig. 1, an oil filling hole 40 is provided on the swing frame 2, and the oil filling hole 40 is communicated with the first limiting groove 22 and the second limiting groove 23. By injecting grease into the oil hole 40, the grease enters the first and second limiting grooves 22 and 23, and the amount of wear occurring at both ends of the shaft hole 21 during the swinging of the swinging frame 2 can be further reduced.

In the prior art, the front thrust washer and the rear thrust washer are required to be wear-resistant, and both thrust and wear-resistant are required to be realized, and heat treatment and surface coating treatment are required to be carried out on the front thrust washer and the rear thrust washer, so that the tolerance of the front thrust washer and the rear thrust washer is larger, often exceeding 0.1mm, and the axial movement amount of the swinging frame 2 is larger. In addition, in order to achieve the purpose of adjusting the axial movement amount of the swing frame 2, the front thrust washer and the rear thrust washer need to be made into various thickness specifications, and the cost is too high. In this application, owing to set up first wear pad 5 and second wear pad 6, satisfy the wear-resisting demand of swing frame 2 shaft hole 21 both ends contact surface, adjustment gasket 4 can not carry out heat treatment or surface coating treatment, and is with low costs. And only set up the adjustment gasket 4 in the one end of shaft hole 21, the adjustment gasket 4 of different thickness is selected according to different tolerance ranges, can control the axial displacement of swing frame 2 more accurately, can control the axial displacement of swing frame 2 in very little within range, for example be less than 0.03mm, greatly reduced the axial displacement of swing frame 2.

Optionally, the distance between the distal end surface of the adjustment shim 4 and the bottom of the first limit groove 22 is greater than the distance between the distal end surface of the first wear pad 5 and the bottom of the first limit groove 22. The play amount can be controlled within a range of 0.03mm by adjusting the width of the gap between the distal end face of the pad 4 and the distal end face of the first wear pad 5 to be the play amount to be controlled, and controlling the width of the gap to be less than 0.03 mm. In the prior art, the proximal end face and the distal end face of the rear thrust washer are respectively contacted with the support assembly 1 and the end cover 3; the proximal end face and the distal end face of the front thrust washer are respectively contacted with the support assembly 1 and the swing frame 2, so that the risk that the swing frame 2 cannot swing due to the fact that the front thrust washer or the rear thrust washer is clamped exists, once the clamping cannot swing, repair is needed, machining or hot pressing and other treatments are carried out on parts, normal operation of engineering machinery is affected, and repair cost is increased. By using the swing arm assembly of the driving axle 30 provided by the utility model, as the distance between the distal end face of the adjusting gasket 4 and the bottom of the first limit groove 22 is greater than the distance between the distal end face of the first wear pad 5 and the bottom of the first limit groove 22, gaps exist between the first wear pad 5 and the end cover 3 and between the first limit groove 22 and between the second wear pad 6 and the flange 11 and between the second limit groove 23, so that the swing clamping of the swing frame 2 can be prevented, the successful one-time assembly can be realized, the repairing times can be reduced, and the repairing cost can be reduced.

Optionally, referring to fig. 2, in combination with fig. 4, a first sealing groove 26 is provided between the outer circumferential surface of the end cover 3 and the side wall of the first limiting groove 22, and a first sealing ring 7 is provided in the first sealing groove 26. Specifically, embodiments of the first seal groove 26 include the following three types: first, the first seal groove 26 is disposed on the outer circumferential surface of the end cover 3; second, the first sealing groove 26 is disposed on the inner sidewall of the first limiting groove 22, as shown in fig. 4; third, all be equipped with the recess on the outer periphery of end cover 3 and the inside wall of first spacing groove 22, two sunken butt joints constitute first spacing groove 22.

Optionally, referring to fig. 2, in combination with fig. 5, a second sealing groove 27 is provided between the outer circumferential surface of the flange 11 and the inner side wall of the second limiting groove 23, and a second sealing ring 8 is provided in the second sealing groove 27. The second sealing groove 27 is also three in embodiments, and the same manner as the first sealing groove 26 is provided, and will not be described here. By arranging the first sealing ring 7 and the second sealing ring 8, the sealing effect can be achieved on the lubricating grease between the injection shaft hole 21 and the support assembly 1, and the leakage of the lubricating grease is prevented.

Alternatively, referring to fig. 2, the stand assembly 1 includes a stand body 12 and a bush shaft 9, a proximal end surface of the bush shaft 9 is connected to a distal end surface of the stand body 12, a flange 11 is provided at a proximal end of the bush shaft 9, a shaft hole 21 of the swing frame 2 is engaged with the bush shaft 9, and the swing frame 2 is fitted over the bush shaft 9. Wherein the "flange 11 is provided at the proximal end of the bushing shaft 9", i.e. the flange 11 is provided at the end of the bushing shaft 9 near the drive axle 30. Alternatively, in this embodiment, the first limiting groove 22 and the second limiting groove 23 are both circular grooves, and thus, the outer contour of the flange 11 is circular. The dimensions of the flange 11 and the dimensions of the second limiting groove 23 are matched. Optionally, the bushing shaft 9 and the support body 12 are provided with corresponding mounting holes. The bushing shaft 9 and the support body 12 are connected by bolts 10.

Alternatively, referring to fig. 2, the end cover 3, the bushing shaft 9 and the support body 12 are provided with corresponding mounting holes, and the end cover 3, the bushing shaft 9 and the support body 12 are connected by bolts 10. Specifically, referring to fig. 1, the end cover 3 and the bushing shaft 9 are respectively provided with a through mounting hole, the support body 12 is provided with a corresponding matched blind hole, the bolt 10 is mounted from the far end of the swing frame 2 to the near end, sequentially passes through the end cover 3 and the bushing shaft 9, and finally is screwed in the blind hole of the support body 12 to realize the connection of the three. Because the bushing shaft 9 and the support body 12 are arranged in a split mode, compared with the support body 12, the bushing shaft 9 is a small part, the processing is easy to control, and the processing precision in the processing process, namely the tolerance range of the bushing shaft 9, is easy to control, so that the control precision of the axial movement amount of the swinging frame 2 is further improved.

As an alternative embodiment, the bushing shaft 9 and the holder body 12 are integrally provided, and the end cap 3 is detachably attached to the distal end face of the bushing shaft 9 by bolts 10.

Optionally, a bushing 20 is sleeved between the outer peripheral wall of the bushing shaft 9 and the inner peripheral wall of the shaft hole 21. The provision of the bushing 20 helps to reduce wear between the bushing shaft 9 and the shaft hole 21 during the swinging of the swing frame 2. Optionally, the surface of the liner 20 is coated with copper, which is beneficial to improving the wear resistance of the liner 20.

Example 2

The engineering machine comprises a drive axle 30, wherein the front end or the rear end of the drive axle 30 is provided with the drive axle swinging frame assembly in the embodiment 1.

The swing frame 2 can swing under the condition of bearing vertical load.

Specifically, referring to fig. 1, along the front-rear direction of the drive axle 30, both ends of the drive axle 30 are provided with support assemblies 1, and along the front-rear direction of the frame, the support assemblies 1 at the front end are rotatably connected with a front swing frame 24, and the support assemblies 1 at the rear end are rotatably connected with a rear swing frame 25. If the front swing frame 24 is axially limited by the drive axle swing frame assembly in embodiment 1, the rear swing frame 25 is not limited in the axial direction; or the drive axle swing frame assembly in embodiment 1 is adopted to axially limit the rear swing frame 25, the axial limit of the rear swing frame 25 is not required. Because the front swing frame and the rear swing frame 2 are connected to the frame, after the swing frame 2 at one end is connected with the frame, the mounting hole of the frame axially limits the swing frame 2 at the end, and only the axial movement of the swing frame 2 at the other end is limited by adjusting the gasket 4.

Since the present embodiment includes the drive axle swing frame assembly in embodiment 1, all the advantages in embodiment 1 are provided, and the description thereof is omitted.

Optionally, the work machine comprises a loader. The carrier body 12 includes a final drive housing.

According to the above description, the present patent application has the following advantages:

1. the adjusting gaskets 4 are only arranged between the end cover 3 and the bottom of the first limit groove 22, the sum of axial tolerances at the front end and the rear end of the swinging frame 2 can be compensated by replacing the adjusting gaskets 4 with different thicknesses, and as only one adjusting gasket 4 is required to be assembled at the far end of the swinging frame 2, the axial movement of the swinging frame 2 can be more accurately controlled by selecting the adjusting gaskets 4 with different thicknesses according to different tolerance ranges, and the axial movement of the swinging frame 2 can be controlled within a small range, for example, the movement is less than 0.03mm, so that the axial movement of the swinging frame 2 is greatly reduced;

2. the first wear-resistant pad 5 and the second wear-resistant pad 6 are arranged, so that the abrasion between the two ends of the shaft hole 21 and the flange 11 and the end cover 3 can be prevented in the swinging process of the swinging frame 2;

3. the first wear-resistant pad 5 and the second wear-resistant pad 6 are arranged, so that the wear-resistant requirement of contact surfaces of two ends of the shaft hole 21 of the swing frame 2 is met, the adjusting gasket 4 can be subjected to no heat treatment or surface coating treatment, and the cost is low;

4. because the distance between the distal end face of the adjusting gasket 4 and the bottom of the first limit groove 22 is greater than the distance between the distal end face of the first wear pad 5 and the bottom of the first limit groove 22, gaps exist between the first wear pad 5 and the end cover 3 as well as between the second wear pad 6 and the flange 11 as well as between the second wear pad 6 and the second limit groove 23, so that the swing of the swing frame 2 can be prevented from being blocked, the one-time assembly success can be realized, the repairing times can be reduced, and the repairing cost can be reduced;

5. the bushing shaft 9 and the support body 12 are arranged in a split mode, compared with the support body 12, the bushing shaft 9 is a small part, machining is easy to achieve, machining precision is easy to control in the machining process, namely the tolerance range of the bushing shaft 9 is easy to control, and therefore the control precision of the axial movement amount of the swing frame 2 is further improved;

6. the bushing 20 is arranged, so that abrasion between the bushing shaft 9 and the shaft hole 21 is reduced during the swinging process of the swinging frame 2; optionally, the surface of the liner 20 is coated with copper, which is beneficial to improving the wear resistance of the liner 20.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims (10)

1. A drive axle swing frame assembly, comprising:

a support assembly (1), the support assembly (1) being provided with a flange (11);

the swinging frame (2) is provided with a shaft hole (21) matched with the support assembly (1), the swinging frame (2) is rotatably sleeved on the support assembly (1), a first limit groove (22) is formed in the far end face of the shaft hole (21), a second limit groove (23) is formed in the near end face of the shaft hole (21), the flange (11) is arranged in the second limit groove (23), and the far end face of the flange (11) is in butt joint with the groove bottom of the second limit groove (23);

the end cover (3) is detachably connected to the far end face of the support assembly (1) and is arranged in the first limiting groove (22), and an adjusting gasket (4) is arranged between the end cover (3) and the groove bottom of the first limiting groove (22).

2. The drive axle swing frame assembly according to claim 1, wherein a first wear pad (5) is arranged between the end cover (3) and the bottom of the first limit groove (22), and the inner diameter of the first wear pad (5) is larger than the outer diameter of the adjusting gasket (4); a second wear-resistant pad (6) is arranged between the flange (11) and the bottom of the second limiting groove (23).

3. The drive axle swing frame assembly according to claim 2, wherein the swing frame (2) is provided with an oil filling hole (40), and the oil filling hole (40) is communicated with the first limit groove (22) and the second limit groove (23).

4. A drive axle swing frame assembly according to claim 2 or 3, wherein the distance of the distal end face of the adjustment shim (4) from the groove bottom of the first limit groove (22) is greater than the distance of the distal end face of the first wear pad (5) from the groove bottom of the first limit groove (22).

5. A drive axle swing frame assembly according to any one of claims 1-3, wherein a first sealing groove (26) is provided between the outer circumferential surface of the end cover (3) and the side wall of the first limit groove (22), and a first sealing ring (7) is provided in the first sealing groove (26).

6. A drive axle swing frame assembly according to any one of claims 1-3, wherein a second sealing groove (27) is provided between the outer circumferential surface of the flange (11) and the side wall of the second limit groove (23), and a second sealing ring (8) is provided in the second sealing groove (27).

7. A drive axle swing frame assembly according to any one of claims 1-3, wherein the support assembly (1) comprises a support body (12) and a bushing shaft (9), the proximal end face of the bushing shaft (9) is connected with the distal end face of the support body (12), the flange (11) is arranged at the proximal end of the bushing shaft (9), the shaft hole (21) of the swing frame (2) is matched with the bushing shaft (9), and the swing frame (2) is sleeved on the bushing shaft (9).

8. The drive axle swing frame assembly according to claim 7, wherein the end cover (3), the bushing shaft (9) and the support body (12) are provided with corresponding mounting holes, and the end cover (3), the bushing shaft (9) and the support body (12) are connected through bolts (10); or, the bushing shaft (9) and the support body (12) are integrally arranged, and the end cover (3) is detachably connected to the distal end face of the bushing shaft (9) through a bolt (10).

9. The drive axle swing frame assembly according to claim 7, wherein a bushing (20) is interposed between the outer peripheral wall of the bushing shaft (9) and the inner peripheral wall of the shaft hole (21).

10. Engineering machine, characterized in that it comprises a drive axle (30), the front end or the rear end of the drive axle (30) being provided with the drive axle swing frame assembly according to any one of claims 1-9.