Quick dismounting device for hub bearing assembly

Abstract

A quick dismounting device for a hub bearing assembly belongs to the technical field of automobile maintenance and comprises a telescopic driving unit, the telescopic driving unit is detachably mounted on a fixing disc, the telescopic end of the telescopic driving unit is detachably connected with a pressure head, the pressure head is of a step structure, and the pressure head is used for being inserted and abutted against the end of a half shaft of an axle housing. Two pull arm assemblies are detachably installed on the fixing disc, the two pull arm assemblies are oppositely distributed on the two sides of the pressing head, the two pull arm assemblies are used for pulling a hub bearing assembly in the direction opposite to the moving direction of the pressing head, the overall structure is achieved, the telescopic driving unit is connected with a half shaft of an axle housing through the pressing head, and the pressing head is inserted into and abuts against the half shaft of the axle housing. The hub bearing assembly is stable in connection, does not need to be provided with an adjusting structure, can be quickly positioned and mounted, guarantees the coaxiality, is convenient to use, and can be quickly separated from the axle housing under the thrust of the telescopic driving unit and the reverse tension of the pull arm assembly.

Description

Technical Field

[0001] This utility model relates to the field of automotive maintenance technology, and in particular to a quick disassembly device for wheel hub bearing assemblies. Background Technology

[0002] The wheel hub is installed at both ends of the axle housing and is the intermediate component connecting the tire and the axle housing. The wheel hub bearing is installed on the journal of the axle housing. The wheel hub is tightly fitted with the outer ring of the wheel hub bearing through the internal bearing hole. The inner ring of the wheel hub bearing is interference-fitted with the journal of the axle housing or fixed to the journal by means of nuts, etc.

[0003] In the process of automobile repair and maintenance, it is often necessary to inspect, replace or maintain the wheel hub bearings of the vehicle. However, the wheel hub bearings are fixedly installed on the journal of the axle housing, making disassembly difficult. Currently, hydraulic disassembly devices (such as publication number CN118699751A) have been developed, which are equipped with a gripper plate. The gripper plate is connected to a hydraulic rod, and under the pull of the hydraulic rod, the gripper plate is used to separate the disassembly parts (rotor spline sleeve, working brake flange or bearing) from the disassembly shaft.

[0004] Existing hydraulic disassembly devices rely on a pressing rod to clamp against the disassembly shaft, requiring a support and vertical adjustment structure to ensure coaxiality. This is inconvenient. Furthermore, existing hydraulic disassembly devices require replacing workpiece retainers of different sizes to accommodate different bearing sizes, increasing the number of replacement parts and complicating the overall structure, making them difficult to carry, store, and use. Additionally, the fixed positions of the gripper and hydraulic rod cannot accommodate bearing disassembly requirements with varying distances from the axle housing end face. Utility Model Content

[0005] To address the technical problem in the prior art where existing hydraulic disassembly devices require adjustment of the position of the extrusion rod to ensure coaxiality between the extrusion rod and the disassembly shaft, thus affecting ease of use, this utility model provides a quick disassembly device for wheel hub bearing assemblies.

[0006] The technical solution of this utility model is as follows:

[0007] This invention provides a quick disassembly device for wheel hub bearing assemblies, including a telescopic drive unit detachably mounted on a fixed plate. A pressure head, having a stepped structure, is detachably connected to the telescopic end of the drive unit and is used to insert and abut against the end of the axle housing's half-shaft. Two pull arm assemblies are detachably mounted on the fixed plate, positioned opposite each other on either side of the pressure head. These two pull arm assemblies are used to pull the wheel hub bearing assembly in the opposite direction to the pressure head's movement. The combined use of the telescopic drive unit and the pull arm assemblies eliminates the need for gantry structures, simplifying the design. Furthermore, the connection between the telescopic drive unit and the axle housing's half-shaft via the pressure head, with the pressure head inserting and abutting against the half-shaft, ensures a stable connection without the need for adjustment structures. This allows for quick positioning and installation while maintaining coaxiality, making it convenient to use. Under the thrust of the telescopic drive unit and the reverse pulling force of the pull arm assemblies, the wheel hub bearing assembly can be quickly separated from the axle housing, improving the efficiency of wheel hub bearing assembly disassembly.

[0008] Preferably, the pressure head includes a first stepped surface and a second stepped surface arranged coaxially. The first stepped surface is conical and is used to insert into the half-shaft at the end of the axle housing, serving a positioning and guiding function. The second stepped surface is flat and is used to abut against the end face of the half-shaft of the axle housing, providing a reliable support point for subsequent pressure application and ensuring the stability and accuracy of the pressure head during operation.

[0009] Preferably, the telescopic drive unit has a telescopic end that is threadedly connected to the pressure head, which allows for the disassembly and replacement of the pressure head to accommodate axle housing half-shafts of different specifications. At the same time, it also allows the position of the pressure head to be adaptively adjusted as the distance between the wheel hub bearing assembly and the axle housing end face changes, resulting in strong overall adaptability.

[0010] Preferably, a cross-shaped first limiting groove is provided on one side of the fixed plate, and a threaded hole is provided at the center of the first limiting groove. Several first mounting holes are also provided in the first limiting groove. The several first mounting holes are arranged in a cross shape around the threaded hole. The telescopic drive unit is threadedly connected to the threaded hole. The pull arm assembly is connected to the first mounting hole through a first adjusting bolt. The cross-shaped first limiting groove and the cross-shaped arrangement of the first mounting holes provide multiple adjustment positions for the installation of the pull arm assembly, which facilitates flexible adjustment according to wheel hub bearing assemblies of different sizes, thereby enhancing the applicability of the device.

[0011] Preferably, the first mounting hole is an elongated hole, which further increases the adjustment range of the mounting position of the pull arm assembly, can better adapt to wheel hub bearing assemblies of different specifications, and improves the flexibility and adaptability of the device in actual use.

[0012] Preferably, the pull arm assembly includes a connecting arm, one end of which is fixedly provided with a first connecting part. The first connecting part is inserted into a first limiting groove and is connected to a fixed plate through a first adjusting bolt. The distance between the two connecting arms can be adjusted as needed to accommodate wheel hub bearing assemblies of different specifications. A connecting seat is detachably installed on the outer wall of the connecting arm. The connecting seat is rotatably connected to a pull plate, which allows the pull plate to flexibly adjust its angle, better contact the wheel hub bearing assembly, and improve the pulling effect.

[0013] Preferably, a second limiting groove is provided on the outer wall of the connecting arm, and a plurality of third mounting holes are provided in the second limiting groove. The plurality of third mounting holes are spaced apart along the length direction of the connecting arm. The connecting seat is connected to the third mounting holes through a second adjusting bolt. The installation position of the connecting seat on the connecting arm can be adjusted according to actual needs, and the initial distance between the pull plate and the end face of the bridge housing can be changed.

[0014] Preferably, the pull plate includes an L-shaped pull plate body, which facilitates cooperation with the wheel hub bearing assembly. A second connecting part is fixedly provided on the pull plate body. The second connecting part is rotatably connected to the connecting seat through a pin. An arc part is provided on the side of the pull plate body. The arc parts on the two pull plate end faces are joined to form a round hole to facilitate the passage of the axle housing.

[0015] Preferably, the circular hole formed by the two arc sections is larger than the shaft diameter of the ABS gear ring axle housing, which can accommodate the disassembly of bearings for axle housings with different shaft diameters. The rotatable connection between the pull plate and the connecting seat facilitates the adjustment of the pull plate position so that the pull plate can be fastened onto the axle housing.

[0016] Preferably, a protective layer is fixed at the position where the pull plate contacts the wheel hub bearing assembly. The protective layer is used to contact the end face of the ABS gear ring to protect the end face of the ABS gear ring. The pull plate and the ABS gear ring are in surface contact, the force is even, and it is not easy to damage the surface of the ABS gear ring.

[0017] As can be seen from the above technical solutions, the advantages of this utility model are:

[0018] 1. A telescopic drive unit and a pull arm assembly are installed on the fixed plate. The use of the telescopic drive unit and the pull arm assembly eliminates the need for structures such as gantry frames, simplifying the structure. The telescopic drive unit is connected to the half-shaft of the axle housing through a pressure head. The pressure head is inserted and abuts against the half-shaft of the axle housing, ensuring a stable connection without the need for adjustment structures. This allows for quick positioning and installation while ensuring coaxiality, making it convenient to use. Under the thrust of the telescopic drive unit and the reverse pull of the pull arm assembly, the wheel hub bearing assembly can be quickly separated from the axle housing, improving the efficiency of wheel hub bearing assembly disassembly.

[0019] 2. The pressure head includes a first stepped surface and a second stepped surface arranged coaxially. The first stepped surface is conical and is used to insert into the half-shaft at the end of the axle housing, serving as a positioning and guiding function. The second stepped surface is flat and is used to abut against the end face of the half-shaft of the axle housing, providing a reliable support point for subsequent pressure application and ensuring the stability and accuracy of the pressure head during operation.

[0020] 3. The telescopic drive unit is threadedly connected to the threaded hole, which can change the extension length of the telescopic drive unit, thereby adapting to the disassembly of bearings at different distances from the axle housing end face. The telescopic end of the telescopic drive unit is threadedly connected to the pressure head, so that the position of the pressure head can be adaptively adjusted according to the change of the distance between the wheel hub bearing assembly and the axle housing end face. In addition, the setting of the second limiting groove and the third mounting hole allows the installation position of the connecting seat on the connecting arm to be adjusted according to actual needs, which can change the initial distance between the pull plate and the axle housing end face, and the overall adaptability is strong.

[0021] 4. The connecting arm is connected to the first mounting hole on the fixed plate through the first adjusting bolt. The first mounting hole is an elongated hole structure, which can adjust the relative position between the two connecting arm assemblies as needed, so as to adapt to the disassembly of bearings of different sizes of bridge housings. There is no need to use workpiece retaining rings or other structures. The overall structure is simple and has strong adaptability. Attached Figure Description

[0022] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a three-dimensional structural diagram of the wheel hub bearing assembly quick disassembly device according to one or more embodiments of the present invention in use.

[0024] Figure 2 This is a cross-sectional structural diagram of the wheel hub bearing assembly quick disassembly device according to one or more embodiments of the present invention in use.

[0025] Figure 3 This is a three-dimensional structural diagram of the quick-disassembly device for wheel hub bearing assembly according to one or more embodiments of the present invention. Figure 1 ;

[0026] Figure 4 This is a three-dimensional structural diagram of the quick-disassembly device for wheel hub bearing assembly according to one or more embodiments of the present invention. Figure 2 ;

[0027] Figure 5This is a top view of the quick disassembly device for a wheel hub bearing assembly according to one or more embodiments of the present invention.

[0028] Figure 6 This is a front view structural diagram of the quick disassembly device for a wheel hub bearing assembly according to one or more embodiments of the present invention;

[0029] Figure 7 This is a three-dimensional structural diagram of the fixed disk according to one or more embodiments of the present invention. Figure 1 ;

[0030] Figure 8 This is a three-dimensional structural diagram of the fixed disk according to one or more embodiments of the present invention. Figure 2 ;

[0031] Figure 9 This is a three-dimensional structural diagram of the connecting arm according to one or more embodiments of the present invention. Figure 1 ;

[0032] Figure 10 This is a three-dimensional structural diagram of the connecting arm according to one or more embodiments of the present invention. Figure 2 ;

[0033] Figure 11 This is a three-dimensional structural diagram of the connector according to one or more embodiments of the present invention;

[0034] Figure 12 This is a three-dimensional structural diagram of the pull plate according to one or more embodiments of the present invention. Figure 1 ;

[0035] Figure 13 This is a three-dimensional structural diagram of the pull plate according to one or more embodiments of the present invention. Figure 2 ;

[0036] Figure 14 This is a front view structural diagram of the pull plate according to one or more embodiments of the present invention;

[0037] Figure 15 This is a side view of the pull plate according to one or more embodiments of the present invention.

[0038] Figure 16 This is a three-dimensional structural diagram of the pressure head according to one or more embodiments of the present invention;

[0039] The components represented by the various reference numerals in the diagram are:

[0040] 1. Telescopic drive unit; 2. Washer; 3. Fixed plate; 4. First adjusting bolt; 5. Connecting arm; 6. Connecting seat; 7. Second adjusting bolt; 8. Pin; 9. Pull plate; 10. Protective layer; 11. Nut; 12. Pressure head; 13. Tapered roller bearing; 14. Spacer; 15. Hub oil seal; 16. ABS gear ring; 17. Axle housing; 18. First limiting groove; 19. First mounting hole; 20. Threaded hole; 21. Second mounting hole; 22. First connecting part; 23. Second limiting groove; 24. Third mounting hole; 25. Fourth mounting hole; 26. Ear plate; 27. Pull plate body; 28. Second connecting part; 29. ​​Arc part; 30. First stepped surface; 31. Second stepped surface. Detailed Implementation

[0041] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0042] In a typical embodiment of this utility model, such as Figures 1-6 As shown, a quick disassembly device for a wheel hub bearing assembly is proposed, comprising: a telescopic drive unit 1, a fixed plate 3, a pull arm assembly, and a pressure head 12. The telescopic drive unit 1 is detachably mounted on the fixed plate 3, and the telescopic end of the telescopic drive unit 1 is detachably connected to the pressure head 12 to drive the pressure head 12 to move axially. Two pull arm assemblies are provided, which are distributed opposite each other on both sides of the pressure head 12. One end of the pull arm assembly is detachably connected to the fixed plate 3, and the other end of the pull arm assembly is used to pull the wheel hub bearing assembly. Specifically, the ends of the two pull arm assemblies away from the fixed plate 3 contact the side of the wheel hub bearing assembly. The pressure head 12 is inserted and abuts against the half-shaft end of the axle housing 17. The telescopic drive unit 1 drives the pressure head 12 to move axially toward the axle housing 17 to apply a thrust to the axle housing 17. At the same time, the two pull arm assemblies apply a reaction force to the wheel hub bearing assembly to pull the wheel hub bearing assembly in the opposite direction to the movement of the pressure head 12, thereby pulling the wheel hub bearing assembly off the axle housing 17.

[0043] In this embodiment, the telescopic drive unit 1 is a telescopic cylinder. It is understood that in other embodiments, the telescopic drive unit 1 may also be a hydraulic cylinder or other structures. The specific structure can be selected according to actual needs, and no further restrictions are imposed here.

[0044] like Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the telescopic drive unit 1 has external threads on its outer wall, and the telescopic drive unit 1 is detachably connected to the fixed plate 3 via a threaded connection. The pull arm assembly is detachably connected to the fixed plate 3 via bolts. Figure 7 and Figure 8 As shown, a threaded hole 20 is provided at the center of the fixed plate 3, and the threaded hole 20 passes through the fixed plate 3. The telescopic drive unit 1 is connected to the threaded hole 20 by a threaded connection. The two ends of the telescopic drive unit 1 are distributed on both sides of the fixed plate 3. The threaded connection between the telescopic drive unit 1 and the fixed plate 3 can change the extension length of the telescopic drive unit 1, thereby adapting to the disassembly of bearings with different distances from the end face of the axle housing 17. When the pulling force provided by the telescopic drive unit 1 is between 400-600N, it is convenient for the safe disassembly of the wheel hub bearing assembly. It is safe, reliable and the disassembly speed is adjustable. Lifting lugs are fixed on the side of the fixed plate 3 to facilitate the lifting of the entire device.

[0045] The fixed plate 3 has a first limiting groove 18 on one side for mounting the pull arm assembly. The first limiting groove 18 is a cross-shaped groove. The threaded hole 20 is located at the center of the first limiting groove 18. One end of the pull arm assembly is installed in the first limiting groove 18. The first limiting groove 18 has several first mounting holes 19. The first mounting holes 19 are elongated holes. The several first mounting holes 19 are arranged in a cross shape around the threaded hole 20 for mounting the first adjusting bolt 4. The fixed plate 3 is connected to the pull arm assembly through the first adjusting bolt 4 and the nut 11.

[0046] like Figure 3 and Figure 4 As shown, the pull arm assembly includes a connecting arm 5, a connecting seat 6, a second adjusting bolt 7, a pin 8, and a pull plate 9. One end of the connecting arm 5 is inserted into the first limiting groove 18 of the fixed plate 3, and the connecting arm 5 is connected to the first mounting hole 19 on the fixed plate 3 through the first adjusting bolt 4. The first mounting hole 19 is an elongated hole structure, which can adjust the relative position (i.e., the distance between the two) between the two pull arm assemblies as needed, so as to accommodate the disassembly of axle housing bearings of different sizes. The connecting seat 6 is installed on the outer wall of the connecting arm 5 through the second adjusting bolt 7, and the pull plate 9 is rotatably connected to the connecting seat 6 through the pin 8.

[0047] like Figure 9 and Figure 10As shown, one end of the connecting arm 5 is fixedly provided with a first connecting part 22, which is a rectangular protrusion structure. The first connecting part 22 is used to insert into the first limiting groove 18. A second mounting hole 21 is provided on the first connecting part 22, which is a round hole structure, for the installation of the first adjusting bolt 4. The connecting arm 5 is connected to the first limiting groove 18 through the first connecting part 22. The position of the first connecting part 22 within the first limiting groove 18 can be adjusted, and under the restriction of the first limiting groove 18, the deflection and tilt of the first connecting part 22 can be avoided. The connecting arm 5 is connected and limited to the fixed plate 3 through the first adjusting bolt 4. The first adjusting bolt 4 and the fixed plate 3 are positioned such that the first adjusting bolt 4 and the first adjusting bolt 4 are positioned within the fixed plate 3. A washer 2 is provided between the bolt 4 and the connecting arm 5 to protect the fixing plate 3 and the connecting arm 5. A second limiting groove 23 is provided on the outer wall of the connecting arm 5. Several third mounting holes 24 are provided in the second limiting groove 23. The third mounting holes 24 are circular holes. Several third mounting holes 24 are spaced along the length of the connecting arm 5 for the installation of the second adjusting bolt 7. The connecting seat 6 is fixedly installed in the second limiting groove 23 by the second adjusting bolt 7 and the nut 11. The position of the connecting seat 6 can be adjusted according to the needs, thereby changing the position of the pull plate 9, so that the initial distance between the pull plate 9 and the end face of the bridge housing 17 can be further adjusted, which can accommodate the disassembly of bearings at different distances from the end face of the bridge housing 17.

[0048] like Figure 11 As shown, the connecting seat 6 is an ear-shaped structure containing two ear plates 26. The ear plates 26 are used for mounting the pin 8. The connecting seat 6 is provided with several fourth mounting holes 25 for mounting the second adjusting bolt 7. The second adjusting bolt 7 can pass through the third mounting hole 24 and the fourth mounting hole 25 in sequence to achieve a fixed connection between the connecting seat 6 and the connecting arm 5. The ear plates 26 on the connecting seat 6 can be rotatably connected to the pull plate 9 through the pin 8. When the position of the connecting seat 6 is changed, the initial distance between the pull plate 9 and the end face of the bridge housing 17 can be changed. When the distance between the two connecting arms 5 is adjusted, the positions of the two pull plates 9 relative to the central axis of the wheel hub bearing assembly can be changed to accommodate the disassembly of wheel hub bearing assemblies of different sizes.

[0049] like Figure 12 , Figure 13 and Figure 15 As shown, the pull plate 9 includes a pull plate body 27, a second connecting part 28, and an arc part 29. The pull plate body 27 is an L-shaped plate structure containing two perpendicular plates. The second connecting part 28 is fixedly mounted on one of the plates, and the arc part 29 is formed on the side of the other plate. The second connecting part 28 is used for rotatable connection with the pin 8, and the arc part 29 is used for fitting with the outer shape of the bridge housing 17. Figure 14 As shown, the center lines of the second connecting part 28 and the arc part 29 are collinear with the center line of the pull plate body 27 to ensure uniform force application.

[0050] The arcs 29 on the end faces of the two pull plates 9 are joined to form a circular hole for the passage of the bridge housing 17. In this embodiment, the circular hole formed by the joining of the two arcs 29 is larger than the shaft diameter of the bridge housing 17 at the position of the ABS gear ring 16, which can accommodate the disassembly of bearings of bridge housing 17 with different shaft diameters. The rotatable connection between the pull plate 9 and the connecting seat 6 can facilitate the adjustment of the position of the pull plate 9 so as to fasten the pull plate 9 onto the bridge housing 17.

[0051] like Figure 1 As shown, in order to protect the wheel hub bearing assembly, a protective layer 10 is fixedly provided at the position where the pull plate 9 contacts the wheel hub bearing assembly. In this embodiment, the protective layer 10 is a rubber plate. The wheel hub bearing assembly includes a tapered roller bearing 13, a spacer 14, a wheel hub oil seal 15 and an ABS gear ring 16 arranged sequentially along the axial direction of the axle housing 17. The protective layer 10 is used to contact the end face of the ABS gear ring 16 to protect the end face of the ABS gear ring 16. The pull plate 9 and the ABS gear ring 16 are in surface contact, and the force is uniform, which makes it less likely to damage the surface of the ABS gear ring 16.

[0052] The telescopic drive unit 1 has an external thread at its telescopic end, which is connected to the pressure head 12 by means of a threaded connection. The pressure head 12 is connected to the half shaft end of the bridge housing 17. The pressure head 12 has an internal thread that mates with the telescopic drive unit 1, so that the position of the pressure head 12 can be adaptively adjusted according to the change of the distance from the tapered roller bearing 13 to the end face of the bridge housing 17, and the overall adaptability is strong.

[0053] like Figure 16 As shown, the pressure head 12 has a stepped structure. The pressure head 12 includes a first stepped surface 30 and a second stepped surface 31 arranged coaxially. The first stepped surface 30 is conical to serve as a guide. The first stepped surface 30 is used to insert into the half-shaft at the end of the bridge housing 17. The second stepped surface 31 is a plane and is the main force-bearing surface. The second stepped surface 31 is used to abut against the end face of the half-shaft of the bridge housing 17, which facilitates the connection between the pressure head 12 and the bridge housing 17 and the application of force. The coaxiality is easier to ensure, and the structure is simple and easy to operate.

[0054] The specific working principle is as follows:

[0055] Adjust the distance between the two connecting arms 5 according to the size of the wheel hub bearing assembly and tighten them with the first adjusting bolt 4 to fix the two connecting arms 5 to the fixed plate 3; then, according to the distance from the wheel hub bearing assembly to the end face of the axle housing, turn the pressure head 12 to adjust the position of the pressure head 12, and at the same time loosen the second adjusting bolt 7 to adjust the position of the connecting seat 6 on the connecting arm 5 and fix it.

[0056] After adjustment, the protective layer 10 on the pull plate 9 is brought into contact with the end face of the ABS gear ring 16. At the same time, the first stepped surface 30 of the pressure head 12 is inserted into the half shaft at the end of the axle housing 17, and the second stepped surface 31 of the pressure head 12 is placed against the end face of the half shaft of the axle housing 17. The telescopic drive unit 1 is activated, and the pressure head 12 moves toward a position close to the axle housing 17. At the same time, the pull plate 9 applies a reaction force to the wheel hub bearing assembly until the wheel hub bearing assembly is pulled off the axle housing 17.

[0057] The quick disassembly device in this embodiment has a simple overall structure, and each part is adjustable, making it highly adaptable. It does not require high processing precision, effectively reducing processing difficulty and cost.

[0058] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A quick-release device for a wheel hub bearing assembly, comprising: The telescopic drive unit (1) is characterized in that the telescopic drive unit (1) is detachably installed on the fixed disk (3), and the telescopic end of the telescopic drive unit (1) is detachably connected to the pressure head (12). The pressure head (12) has a stepped structure and is used to insert and abut against the half shaft end of the axle housing (17). Two pull arm assemblies are detachably installed on the fixed disk (3). The two pull arm assemblies are distributed opposite to each other on both sides of the pressure head (12). The two pull arm assemblies are used to pull the wheel hub bearing assembly in the opposite direction to the movement of the pressure head (12).

2. The quick disassembly device for wheel hub bearing assembly according to claim 1, characterized in that, The pressure head (12) includes a first stepped surface (30) and a second stepped surface (31) arranged coaxially. The first stepped surface (30) is conical and is used to insert into the half shaft at the end of the bridge housing (17). The second stepped surface (31) is flat and is used to abut against the end face of the half shaft of the bridge housing (17).

3. The quick disassembly device for wheel hub bearing assembly according to claim 1, characterized in that, The telescopic drive unit (1) is threadedly connected to the pressure head (12).

4. The quick disassembly device for wheel hub bearing assembly according to claim 1, characterized in that, A cross-shaped first limiting groove (18) is provided on one side of the fixed plate (3). A threaded hole (20) is provided at the center of the first limiting groove (18). Several first mounting holes (19) are also provided in the first limiting groove (18). Several first mounting holes (19) are arranged in a cross shape around the threaded hole (20). The telescopic drive unit (1) is threadedly connected to the threaded hole (20). The pull arm assembly is connected to the first mounting hole (19) through the first adjusting bolt (4).

5. The quick disassembly device for wheel hub bearing assembly according to claim 4, characterized in that, The first mounting hole (19) is an elongated hole.

6. The quick disassembly device for wheel hub bearing assembly according to claim 4, characterized in that, The pull arm assembly includes a connecting arm (5), one end of which is fixedly provided with a first connecting part (22), the first connecting part (22) is inserted into a first limiting groove (18), the first connecting part (22) is connected to a fixed plate (3) through a first adjusting bolt (4), and a connecting seat (6) is detachably installed on the outer wall of the connecting arm (5), and a pull plate (9) is rotatably connected to the connecting seat (6).

7. The quick disassembly device for wheel hub bearing assembly according to claim 6, characterized in that, A second limiting groove (23) is provided on the outer wall of the connecting arm (5). A number of third mounting holes (24) are provided in the second limiting groove (23). The number of third mounting holes (24) are spaced apart along the length direction of the connecting arm (5). The connecting seat (6) is connected to the third mounting holes (24) through the second adjusting bolt (7).

8. The quick disassembly device for wheel hub bearing assembly according to claim 6, characterized in that, The pull plate (9) includes an L-shaped pull plate body (27), and a second connecting part (28) is fixedly provided on the pull plate body (27). The second connecting part (28) is rotatably connected to the connecting seat (6) through a pin (8). An arc part (29) is provided on the side of the pull plate body (27), and the arc parts (29) on the end faces of the two pull plates (9) are joined to form a round hole.

9. The quick disassembly device for wheel hub bearing assembly according to claim 8, characterized in that, The circular hole formed by the two arcs (29) is larger than the shaft diameter of the bridge housing (17) at the position of the ABS gear ring (16).

10. The quick-release device for wheel hub bearing assembly according to claim 6, characterized in that, The pull plate (9) is fixed with a protective layer (10) at the position where it contacts the wheel hub bearing assembly.

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