Hub bearing and assembling method

Abstract

The invention relates to the technical field of bearings, and provides a hub bearing and an assembling method.The hub bearing comprises an inner ring, an outer ring and a bearing body, a rolling body is installed between the inner ring and the outer ring, the inner ring is arranged on the peripheral side of the bearing body in a sleeving mode, and the bearing body is provided with an insertion channel allowing a rotating shaft to be inserted; the bearing body comprises a first connecting part and a second connecting part, the first connecting part is provided with a first limiting surface, the second connecting part is provided with a second limiting surface, and the first limiting surface and the second limiting surface abut against the two ends of the inner ring respectively; a connecting assembly is arranged between the first connecting part and the second connecting part, and the first connecting part and the second connecting part are detachably connected through the connecting assembly. According to the hub bearing, the disassembly and assembly convenience between the bearing body and the inner ring can be improved.

Description

Technical Field

[0001] This application relates to the technical field of bearings, and in particular to a hub bearing and its assembly method. Background Technology

[0002] Wheel bearings are critical components in automobiles and other vehicles, used to connect wheels to axles. Their main functions are to support the weight of the vehicle body, reduce rotational friction, and transmit driving or braking torque. They typically consist of an inner ring, an outer ring, rolling elements (such as steel balls or rollers), and a cage.

[0003] In existing technology, wheel hub bearings include an inner ring, an outer ring, and a bearing housing. The bearing housing connects to the rotating shaft, the inner ring is fixedly mounted on the bearing housing, and rolling elements are installed between the inner and outer rings. During manufacturing, the bearing housing and inner ring are typically integrally formed (machined from a single forging) or manufactured using an interference fit. The integral forming method offers high structural rigidity and reliability, and is currently the mainstream manufacturing solution. However, it also suffers from high maintenance costs; if the bearing component is damaged, the inner ring or bearing housing cannot be replaced individually, requiring replacement of the entire assembly. Furthermore, it is difficult to adapt to different vehicle models, resulting in poor compatibility. The interference fit method requires high assembly precision and is difficult to disassemble. The tight interference fit necessitates specialized equipment for separation during maintenance, which can easily damage components and hinders reuse. Therefore, further improvements are needed. Summary of the Invention

[0004] To improve the ease of disassembly and assembly between the bearing housing and the inner ring, this application provides a wheel hub bearing and its assembly method.

[0005] Firstly, the hub bearing provided in this application adopts the following technical solution: A hub bearing includes an inner ring, an outer ring, and a bearing body. Rolling elements are installed between the inner ring and the outer ring. The inner ring is fitted onto the outer periphery of the bearing body, and the bearing body has an insertion channel for a rotating shaft to be inserted. The bearing body includes a first connecting portion and a second connecting portion. The first connecting portion has a first limiting surface, and the second connecting portion has a second limiting surface. The first limiting surface and the second limiting surface respectively abut against both ends of the inner ring. A connecting assembly is provided between the first connecting portion and the second connecting portion, and the first connecting portion and the second connecting portion are detachably connected by the connecting assembly.

[0006] By adopting the above technical solution, during bearing housing installation, the first connecting part and the second connecting part are inserted sequentially from both ends of the inner ring, and then locked together using the connecting assembly to form the bearing housing. The first limiting surface of the first connecting part and the second limiting surface of the second connecting part respectively abut against both ends of the inner ring, making the bearing housing and the inner ring a whole, improving the ease of disassembly and assembly and the stability of the connection between the bearing housing and the inner ring. When it is necessary to replace or maintain parts, the bearing housing and the inner ring can be separated by disassembling the first connecting part and the second connecting part using the connecting assembly, reducing the possibility of damage to parts during disassembly.

[0007] Optionally, the first connecting part has a first connecting hole on the end face near the second connecting part, and the connecting assembly includes a first connecting rod and a first nut. One end of the first connecting rod is connected to the end face of the second connecting part near the first connecting part, and the other end passes through the first connecting hole and is threaded to the first nut.

[0008] By adopting the above technical solution, the first connecting part and the second connecting part are inserted sequentially from both ends of the inner ring, so that the first connecting rod passes through the first connecting hole, and then is locked by the first nut, thereby improving the ease of disassembly and assembly between the first connecting part and the second connecting part.

[0009] Optionally, the inner peripheral wall of the inner ring is provided with a first mating strip, and the outer peripheral walls of the first connecting part and the second connecting part are both provided with a first mating groove for the first mating strip to be embedded.

[0010] By adopting the above technical solution, the circumferential linkage between the inner ring and the bearing body is realized by the insertion and cooperation of the first mating strip and the first mating groove. That is, the bearing body drives the inner ring to rotate under the drive of the rotating shaft, thereby improving the connection stability between the bearing body and the inner ring.

[0011] Optionally, the inner wall of the insertion channel is provided with a key strip, and the outer peripheral wall of the rotating shaft is provided with a keyway for the key strip to be embedded in; the inner peripheral wall of the inner ring is provided with a second mating strip, and the key strip is connected with a reinforcing bolt, which passes through the key strip and the first connecting part in sequence and is threaded to the second mating strip.

[0012] By adopting the above technical solution, circumferential linkage is achieved between the rotating shaft and the bearing body through the insertion and connection of the key and keyway. Before the rotating shaft is installed, the key is installed in the insertion channel by reinforcing bolts. The reinforcing bolts pass through the key, the first connecting part and are threaded to the second mating bar in sequence, thereby connecting the key, the first connecting part and the second mating bar into a whole, further enhancing the overall structural connection stability.

[0013] Optionally, the first connecting part has a second connecting hole on its end face near the second connecting part, and the second connecting part has a second connecting rod on its end face near the first connecting part. The second connecting rod passes through the second connecting hole and is threaded with a second nut. The outer wall of the second connecting rod has a through hole for a reinforcing bolt to pass through.

[0014] By adopting the above technical solution, the reinforcing bolt is inserted through the hole in the second connecting rod, thereby forming a second locking mechanism for the second connecting rod (the first being the locking mechanism of the second nut), improving the connection stability between the first and second connecting parts. Furthermore, after the reinforcing bolt is locked, the rotating shaft is installed in the insertion channel. At this time, the rotating shaft blocks the reinforcing bolt, ensuring that the reinforcing bolt remains locked. Even in the extreme case where both the first and second nuts accidentally disengage during operation, the reinforcing bolt acts as a "second line of defense" connecting the first and second connecting parts, greatly improving the overall structural stability.

[0015] Optionally, the inner wall of the insertion channel is provided with a first recess for the key bar to be embedded, the inner peripheral wall of the inner ring is provided with a second recess for the second mating bar to be embedded, and the outer peripheral wall of the first connecting part is provided with a third recess, the third recess being disposed opposite to the second recess; a pushing assembly is provided between the second connecting rod and the key bar, the pushing assembly being used to drive the key bar to move into or out of the key slot.

[0016] By adopting the above technical solution, after the key bar is locked to the second mating bar with reinforcing bolts, the key bar is embedded in the first countersunk groove, and the second mating bar is embedded in the second countersunk groove. The first countersunk groove provides clearance space for the key bar, so that the rotating shaft can be inserted into the insertion channel. After the rotating shaft is inserted into the insertion channel, the key bar is partially moved into the keyway of the rotating shaft by the pushing component, realizing the connection between the rotating shaft and the bearing body, and improving the ease of disassembly and assembly of the overall structure.

[0017] Optionally, one end of the second connecting rod is slidably connected to the second connecting part. The pushing assembly includes a pushing rod and a pushing block. One end of the pushing rod is connected to the key bar, and the other end passes through the second connecting hole and abuts against the second connecting rod. The pushing block is disposed on the outer wall of the second connecting rod. When the second connecting rod slides away from the second connecting part, the pushing block forces the pushing rod to slide towards the side closer to the key bar.

[0018] By adopting the above technical solution, after the rotating shaft is inserted into the insertion channel, the second nut is tightened, which drives the second connecting rod to slide away from the second connecting part. During the sliding process of the second connecting rod, the pusher block pushes the pusher rod, thereby pushing the key bar so that the key bar is partially embedded in the keyway, improving the operation convenience of the overall structure.

[0019] Optionally, the side wall of the push block is provided with a guide groove, which gradually moves away from the key bar from the end near the second connecting part to the end away from the second connecting part; the push rod is provided with a guide post for embedding into the guide groove.

[0020] By adopting the above technical solution, tightening the second nut causes the second connecting rod to slide away from the second connecting part. During the sliding process, the guide post moves into the guide groove, and under the action of the guide groove, the key bar is driven to embed into the key groove. During disassembly, loosening the second nut forces the second connecting rod to slide closer to the second connecting part, allowing the key bar to be pulled out of the key groove, thus improving the ease of disassembly and assembly of the overall structure.

[0021] Optionally, a limiting block can be detachably installed at the end of the first connecting portion away from the second connecting portion, and the limiting block abuts against the end face of the second nut away from the second connecting portion.

[0022] By adopting the above technical solution, when the rotating shaft needs to be disassembled, the limiting block is installed at the end of the first connecting part away from the second connecting part, so that the limiting block abuts against the end face of the second nut away from the second connecting part. At this time, the second nut is loosened with a wrench or other tools. Since the second nut cannot slide due to the obstruction of the limiting block (that is, the second nut is limited between the obstruction block and the end face of the first connecting part away from the second connecting part, and can only rotate but not move), the second connecting rod is driven to slide towards the side closer to the second connecting part, so as to pull the key bar out of the keyway, which greatly improves the convenience of disassembly and assembly of the overall structure. This avoids the situation where the bearing structure is damaged by manually striking the second connecting rod when the key bar is removed from the keyway.

[0023] Secondly, the assembly method for a hub bearing provided in this application adopts the following technical solution: An assembly method for a hub bearing specifically includes the following steps: S1, installation of rolling elements: installing rolling elements between the inner ring and the outer ring; S2, installation of the bearing housing: installing the bearing housing onto the inner ring; S3, debugging and inspection.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. With the first and second connecting parts, during bearing body installation, the first and second connecting parts are inserted sequentially from both ends of the inner ring, and then locked together using the connecting assembly to form the bearing body. The first limiting surface of the first connecting part and the second limiting surface of the second connecting part respectively abut against both ends of the inner ring, making the bearing body and the inner ring a whole, improving the ease of disassembly and assembly and the stability of the connection between the bearing body and the inner ring. When it is necessary to replace or maintain parts, the bearing body and the inner ring can be separated by disassembling the first and second connecting parts using the connecting assembly, reducing the possibility of damage to parts during disassembly. 2. By installing reinforcing bolts, which pass through the holes in the second connecting rod, a second layer of locking is formed (the first layer being the locking of the second nut), improving the connection stability between the first and second connecting parts. Furthermore, after the reinforcing bolts are locked, the rotating shaft is installed in the insertion channel. The rotating shaft then blocks the reinforcing bolts, ensuring they remain locked. Even in the extreme case where both the first and second nuts accidentally disengage during operation, the reinforcing bolts act as a "second line of defense" connecting the first and second connecting parts, significantly improving the overall structural stability. 3. By using the limiting block, when the rotating shaft needs to be disassembled, the limiting block is installed at the end of the first connecting part away from the second connecting part, so that the limiting block abuts against the end face of the second nut away from the second connecting part. At this time, the second nut can be loosened using a wrench or other tools. Because the second nut cannot slide due to the obstruction of the limiting block (i.e., the second nut is confined between the blocking block and the end face of the first connecting part away from the second connecting part, allowing only rotation and no displacement), the second connecting rod is driven to slide towards the side closer to the second connecting part, thus pulling the key bar out of the keyway. This greatly improves the ease of disassembly and assembly of the overall structure. It avoids the situation where the bearing structure is damaged due to manual striking of the second connecting rod when the key bar is removed from the keyway. Attached Figure Description

[0025] Figure 1 This is a cross-sectional view of the overall structure of Embodiment 1; Figure 2 This is a partial sectional view of Embodiment 1 showing the first connecting rod and the first nut; Figure 3 This is a partial cross-sectional view of the reinforcing bolts in Example 2; Figure 4 This is a partial cross-sectional view of the limiting block in Embodiment 3; Figure 5 This is a partial cross-sectional view of the jacking assembly in Embodiment 3; Figure 6 This is a partial cross-sectional view of the guide groove in Embodiment 3.

[0026] Explanation of reference numerals in the attached drawings: 1. Inner ring; 11. First mating bar; 12. Second mating bar; 13. Second recess; 2. Outer ring; 3. Bearing body; 31. Insertion channel; 32. First connecting part; 321. First limiting surface; 322. First connecting hole; 323. Second connecting hole; 324. First recess; 325. Third recess; 33. Second connecting part; 331. Second limiting surface; 332. First connecting rod; 333. First nut; 334. 335. Second connecting rod; 336. Second nut; 337. Through hole; 338. Sliding block; 339. Return spring; 30. First mating groove; 31. Flange; 32. End cover; 4. Rolling element; 5. Key bar; 530. Reinforcing bolt; 6. Pushing assembly; 61. Pushing rod; 611. Guide post; 612. Through groove; 62. Pushing block; 621. Guide groove; 7. Limiting block; 71. Limiting part; 8. Sealing ring; 9. Rotating shaft; 91. Keyway. Detailed Implementation

[0027] The following combination Figures 1-6 This application will be described in further detail. Example 1:

[0028] This application discloses a hub bearing.

[0029] Reference Figure 1 , Figure 2 A hub bearing includes an inner ring 1, an outer ring 2, and a bearing body 3. The outer ring 2 is mounted on the outside of the inner ring 1. Two sealing rings 8 are installed between the inner ring 1 and the outer ring 2. Multiple sets of rolling elements 4 are installed between the two sealing rings 8 (the rolling elements 4 and the sealing rings 8 are existing technical structures and will not be described in detail here). The inner ring 1 and the outer ring 2 are rotatably connected by the multiple sets of rolling elements 4.

[0030] The inner ring 1 is fitted onto the outer side of the bearing body 3, and the bearing body 3 has an insertion channel 31 for the rotating shaft 9 to be inserted. In this embodiment, the bearing body 3 includes a first connecting part 32 and a second connecting part 33. A flange 35 is fixedly connected to the outer wall of the first connecting part 32. The first connecting part 32 has a first limiting surface 321, and the second connecting part 33 has a second limiting surface 331. The first limiting surface 321 and the second limiting surface 331 respectively abut against the two ends of the inner ring 1.

[0031] Multiple first mating strips 11 are fixedly installed on the inner peripheral wall of the inner ring 1. The first mating strips 11 are integrally formed with the inner ring 1. The multiple first mating strips 11 are arranged at intervals around the central axis of the inner ring 1. The outer peripheral walls of the first connecting part 32 and the second connecting part 33 are provided with first mating grooves 34 for the first mating strips 11 to be inserted. The number of first mating grooves 34 corresponds to the number of first mating strips 11.

[0032] A connecting component is provided between the first connecting portion 32 and the second connecting portion 33, and the first connecting portion 32 and the second connecting portion 33 are detachably connected by the connecting component. In this embodiment, a plurality of first connecting holes 322 are provided on the end face of the first connecting portion 32 near the second connecting portion 33. The plurality of first connecting holes 322 are arranged at intervals around the central axis of the first connecting portion 32, and each first connecting hole 322 is a through hole penetrating the first connecting portion 32.

[0033] The connecting assembly includes a first connecting rod 332 and a first nut 333. The number of first connecting rods 332 corresponds to the number of first connecting holes 322. One end of each first connecting rod 332 is fixedly connected to the end face of the second connecting part 33 near the first connecting part 32, and the other end passes through the corresponding first connecting hole 322. The number of first nuts 333 corresponds to the number of first connecting rods 332. Each first nut 333 is sleeved on the corresponding first connecting rod 332 and threadedly connected to it.

[0034] A key bar 5 is installed on the inner peripheral wall of the first connecting part 32. The key bar 5 can be fixedly installed on the inner peripheral wall of the first connecting part 32 by bolt connection. Both ends of the key bar 5 extend along the axial direction of the first connecting part 32. A keyway 91 is formed on the outer peripheral wall of the rotating shaft 9 for the key bar 5 to be inserted. Both ends of the keyway 91 extend along the axial direction of the rotating shaft 9. One end of the keyway 91 passes through the end face of the rotating shaft 9 near the first connecting part 32 so that the key bar 5 can be moved in.

[0035] An end cap 36 is installed on the end face of the first connecting part 32 away from the second connecting part 33. The outer diameter of the end cap 36 is larger than the inner diameter of the first connecting part 32. The end cap 36 is bolted to the rotating shaft 9 (the bolted connection between the end cap 36 and the rotating shaft 9, and between the key 5 and the first connecting part 32, is not shown in the figure of this embodiment). The first connecting rod 332 passes through the end cap 36 and is threadedly connected to the first nut 333. The rotating shaft 9 is connected to the bearing body 3 through the combination of the end cap 36 and the key 5 to realize circumferential linkage between the rotating shaft 9 and the bearing body 3 (i.e., the two can rotate synchronously).

[0036] The implementation principle of Embodiment 1 of this application is as follows: When installing the bearing body 3, the first connecting part 32 and the second connecting part 33 are inserted sequentially from both ends of the inner ring 1, so that the first connecting rod 332 passes through the corresponding first connecting hole 322, and then is locked by the first nut 333 to form the bearing body 3. The first limiting surface 321 of the first connecting part 32 and the second limiting surface 331 of the second connecting part 33 respectively abut against both ends of the inner ring 1, and the bearing body 3 and the inner ring 1 are connected as a whole by the insertion and cooperation of the first mating strip 11 and the first mating groove 34, thereby improving the connection stability between the bearing body 3 and the inner ring 1.

[0037] When it is necessary to replace or maintain parts, the first connecting part 32 and the second connecting part 33 can be separated by using the first nut 333, which can separate the bearing body 3 and the inner ring 1, reduce the possibility of damage to bearing parts during disassembly, and improve the ease of disassembly and assembly between the bearing body 3 and the inner ring 1. Example 2:

[0038] This application discloses a hub bearing.

[0039] The difference between the hub bearing disclosed in this application and Embodiment 1 is that: Reference Figure 3 In this embodiment, a second mating strip 12 is installed on the inner peripheral wall of the inner ring 1, and the second mating strip 12 and the inner ring 1 can be fixedly connected by welding. A third recess 325 is provided on the outer peripheral wall of the first connecting part 32 for the second mating strip 12 to be inserted. In this embodiment, one end of the third recess 325 passes through the end face of the first connecting part 32 near the second connecting part 33, so that the second mating strip 12 can be moved in. The key strip 5 is connected with a reinforcing bolt 51. The reinforcing bolt 51 is a countersunk bolt. The reinforcing bolt 51 passes through the key strip 5 and the first connecting part 32 in sequence and is threaded to the second mating strip 12. Multiple reinforcing bolts 51 are arranged at intervals along the length direction of the key strip 5.

[0040] A second connecting hole 323 is provided on the end face of the first connecting part 32 near the second connecting part 33. The second connecting hole 323 is a through hole that penetrates the first connecting part 32. A second connecting rod 334 is installed on the second connecting part 33. One end of the second connecting rod 334 is fixedly connected to the end face of the second connecting part 33 near the first connecting part 32, and the other end passes through the second connecting hole 323 and is threaded with a second nut 335. A through hole 336 is provided on the outer wall of the second connecting rod 334 for the reinforcing bolt 51 to pass through. In this embodiment, the inner diameter of the through hole 336 is adapted to the outer diameter of the reinforcing bolt 51.

[0041] The implementation principle of Embodiment 2 of this application is as follows: After the first connecting part 32 and the second connecting part 33 are locked by the first nut 333, the key bar 5 is installed on the inner peripheral wall of the first connecting part 32 by the reinforcing bolt 51. The reinforcing bolt 51 passes through the key bar 5 and the first connecting part 32 in sequence and is threaded to the second mating bar 12, so that the key bar 5, the first connecting part 32 and the inner ring 1 are connected as a whole, further enhancing the overall structural connection stability.

[0042] Furthermore, a through hole 336 is provided in the second connecting rod 334 for the second reinforcing bolt 51 to pass through, thereby forming a "second locking" between the first connecting part 32 and the second connecting part 33 (the first locking is the locking of the first nut 333 and the second nut 335), improving the connection stability between the first connecting part 32 and the second connecting part 33. In addition, after the reinforcing bolt 51 is locked, the rotating shaft 9 is installed in the insertion channel 31. At this time, the rotating shaft 9 blocks the reinforcing bolt 51, so that the reinforcing bolt 51 always remains in a locked state. Even in the extreme case where the first nut 333 and the second nut 335 accidentally come loose during operation, the reinforcing bolt 51 acts as a "second line of defense" connecting the first connecting part 32 and the second connecting part 33, greatly improving the stability and safety of the overall structure. Example 3:

[0043] This application discloses a hub bearing.

[0044] The difference between the hub bearing disclosed in this application and that in embodiment 2 is as follows: Reference Figure 4 In this embodiment, the length of the keyway 91 of the rotating shaft 9 is adapted to the length of the key bar 5 (i.e., one end of the keyway 91 does not penetrate the end face of the rotating shaft 9 near the first connecting part 32). The inner wall of the insertion channel 31 is provided with a first recess 324 for the key bar 5 to be embedded, and the inner peripheral wall of the inner ring 1 is provided with a second recess 13 for the second mating bar 12 to be embedded. The second mating bar 12 is slidably connected to the inner ring 1 through the second recess 13, and the second recess 13 and the third recess 325 are arranged opposite to each other.

[0045] In this embodiment, a sliding block 337 is slidably installed inside the second connecting portion 33. One end of the second connecting rod 334 extends into the second connecting portion 33 and is fixedly connected to the sliding block 337. The other end of the second connecting rod 334 is slidably connected to the second connecting portion 33 via the sliding block 337. A return spring 338 is installed between the sliding block 337 and the inner wall of the second connecting portion 33. One end of the return spring 338 is fixedly connected to the sliding block 337, and the other end is fixedly connected to the inner wall of the second connecting portion 33.

[0046] Reference Figure 4 , Figure 5 A push assembly 6 is provided between the second connecting rod 334 and the key bar 5. The push assembly 6 is used to drive the key bar 5 into or out of the keyway 91. The push assembly 6 includes push rods 61 and push blocks 62. Multiple push rods 61 are spaced apart along the length of the key bar 5, and the number of push blocks 62 corresponds to the number of push rods 61. One end of the push rod 61 is fixedly connected to the key bar 5, and the other end passes through the second connecting hole 323 and abuts against the outer wall of the second connecting rod 334.

[0047] Reference Figure 5 , Figure 6 The push block 62 is fixedly installed on the outer wall of the second connecting rod 334. Guide grooves 621 are provided on both opposite side walls of the push block 62, gradually moving away from the key bar 5 from the end closest to the second connecting part 33. A through groove 612 is provided on the end of the push rod 61 away from the key bar 5, allowing the push block 62 to pass through. Guide posts 611 are fixedly installed on both opposite side walls of the through groove 612. Two guide posts 611 are correspondingly arranged with two guide grooves 621. One end of each guide groove 621 penetrates the side wall of the push block 62 away from the second connecting part 33 to allow the corresponding guide post 611 to be inserted. When the second nut 335 is tightened, causing the second connecting rod 334 to slide away from the second connecting part 33, the push block 62 forces the push rod 61 to slide closer to the key bar 5.

[0048] Reference Figure 4 A limiting block 7 is installed at the end of the first connecting part 32 away from the second connecting part 33. In this embodiment, the limiting block 7 is detachably installed on the end cap 36 of the first connecting part 32 by means of bolt connection. In other embodiments, the limiting block 7 can also be directly bolted to the end face of the first connecting part 32. The limiting block 7 has a limiting part 71, which abuts against the end face of the second nut 335 away from the second connecting part 33. It should be emphasized that under normal conditions, the limiting block 7 is detached from the first connecting part 32 (i.e., the limiting block 7 is not installed when the bearing is in operation). When it is necessary to disassemble the rotating shaft 9, the limiting block 7 is installed on the first connecting part 32 by means of bolt connection, and the limiting part 71 of the limiting block 7 is forced to abut against the end face of the second nut 335 away from the second connecting part 33. When the second nut 335 is loosened, the displacement of the second nut 335 is restricted to drive the second connecting rod 334 to slide towards the side closer to the second connecting part 33, thereby pulling the key bar 5 out of the keyway 91.

[0049] The implementation principle of Embodiment 3 of this application is as follows: After the key bar 5 is locked to the second mating bar 12 by the reinforcing bolt 51, the key bar 5 is embedded in the first recess 324, and the second mating bar 12 is embedded in the second recess 13. The first recess 324 provides clearance space for the key bar 5 so that the rotating shaft 9 can be inserted into the insertion channel 31. After the rotating shaft 9 is inserted into the insertion channel 31, the second nut 335 is tightened, which drives the second connecting rod 334 to slide away from the second connecting part 33. During the sliding process of the second connecting rod 334, the guide post 611 moves into the guide groove 621, and under the action of the guide groove 621, the key bar 5 is driven to be embedded in the key groove 91. During disassembly, the second nut 335 is loosened, which forces the second connecting rod 334 to slide towards the side closer to the second connecting part 33, so that the key bar 5 can be pulled out of the key groove 91, improving the ease of disassembly and assembly of the overall structure.

[0050] When disassembling the rotating shaft 9, the limiting block 7 is installed at the end of the first connecting part 32 away from the second connecting part 33, so that the limiting block 7 abuts against the end face of the second nut 335 away from the second connecting part 33. At this time, the second nut 335 is loosened with a wrench or other tools. Since the second nut 335 cannot slide due to the obstruction of the limiting block 7 (that is, the second nut 335 is limited between the blocking block and the end face of the first connecting part 32 away from the second connecting part 33, and can only rotate but not move), the second connecting rod 334 is driven to slide towards the side closer to the second connecting part 33, so as to pull the key bar 5 out of the keyway 91, which greatly improves the convenience of disassembly and assembly of the overall structure. This avoids the situation where the bearing structure is damaged due to the need to manually strike the second connecting rod 334 when the key bar 5 is removed from the keyway 91. Example 4:

[0051] This application also discloses a method for assembling a wheel hub bearing.

[0052] A method for assembling a wheel hub bearing specifically includes the following steps: S1. Installation of rolling element 4: Install rolling element 4 and sealing ring 8 between inner ring 1 and outer ring 2.

[0053] S2. Installation of bearing body 3: After the inner ring 1 and outer ring 2 are assembled, install the bearing body 3 onto the inner ring 1.

[0054] S3. Debugging and Inspection: Debug and inspect the assembled bearings to ensure that the quality meets the standards.

[0055] The above are preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made to the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A hub bearing, characterized by: The application relates to a bearing, which comprises an inner ring (1), an outer ring (2) and a bearing body (3), rolling elements (4) are arranged between the inner ring (1) and the outer ring (2), the inner ring (1) is sleeved on the outer circumferential side of the bearing body (3), the bearing body (3) is provided with a plug-in channel (31) for inserting a rotating shaft (9), the bearing body (3) comprises a first connecting part (32) and a second connecting part (33), the first connecting part (32) is provided with a first limiting surface (321), the second connecting part (33) is provided with a second limiting surface (331), the first limiting surface (321) and the second limiting surface (331) abut the two ends of the inner ring (1) respectively, a connecting assembly is arranged between the first connecting part (32) and the second connecting part (33), and the first connecting part (32) and the second connecting part (33) are detachably connected through the connecting assembly.

2. A hub bearing according to claim 1, characterized in that: The end face of the first connecting part (32) close to the second connecting part (33) is provided with a first connecting hole (322), the connecting assembly comprises a first connecting rod (332) and a first nut (333), one end of the first connecting rod (332) is connected to the end face of the second connecting part (33) close to the first connecting part (32), the other end of the first connecting rod (332) passes through the first connecting hole (322) and is threadedly connected to the first nut (333).

3. A hub bearing according to claim 1, wherein: The inner circumferential wall of the inner ring (1) is provided with a first butt joint strip (11), the outer circumferential wall of the first connecting part (32) and the second connecting part (33) is provided with a first butt joint groove (34) for embedding the first butt joint strip (11).

4. A hub bearing according to claim 1, wherein: The inner wall of the plug-in channel (31) is provided with a key strip (5), the outer circumferential wall of the rotating shaft (9) is provided with a key groove (91) for embedding the key strip (5), the inner circumferential wall of the inner ring (1) is provided with a second butt joint strip (12), the key strip (5) is connected with a reinforcing bolt (51), the reinforcing bolt (51) passes through the key strip (5) and the first connecting part (32) in sequence and is threadedly connected to the second butt joint strip (12).

5. A hub bearing according to claim 4, wherein: The end face of the first connecting part (32) close to the second connecting part (33) is provided with a second connecting hole (323), the end face of the second connecting part (33) close to the first connecting part (32) is provided with a second connecting rod (334), the second connecting rod (334) passes through the second connecting hole (323) and is threadedly connected with a second nut (335), and the outer wall of the second connecting rod (334) is provided with a perforation (336) for passing the reinforcing bolt (51).

6. A hub bearing according to claim 5, wherein: The inner wall of the plug-in channel (31) is provided with a first sinking groove (324) for embedding the key strip (5), the inner circumferential wall of the inner ring (1) is provided with a second sinking groove (13) for embedding the second butt joint strip (12), the outer circumferential wall of the first connecting part (32) is provided with a third sinking groove (325), the third sinking groove (325) is arranged opposite to the second sinking groove (13), a pushing assembly (6) is arranged between the second connecting rod (334) and the key strip (5), and the pushing assembly (6) is used for driving the key strip (5) to move into or out of the key groove (91).

7. A hub bearing according to claim 6, wherein: One end of the second connecting rod (334) is in sliding connection with the second connecting part (33), the pushing assembly (6) comprises a pushing rod (61) and a pushing block (62), one end of the pushing rod (61) is connected to the key bar (5), the other end penetrates into the second connecting hole (323) and abuts against the second connecting rod (334); the pushing block (62) is arranged on the outer wall of the second connecting rod (334), when the second connecting rod (334) slides away from the second connecting part (33), the pushing block (62) forces the pushing rod (61) to slide towards the side close to the key bar (5).

8. A hub bearing according to claim 7, characterised in that: A guide groove (621) is formed in the side wall of the pushing block (62), the guide groove (621) gradually moves away from the key bar (5) from one end close to the second connecting part (33) to the other end away from the second connecting part (33); the pushing rod (61) is provided with a guide column (611) embedded in the guide groove (621).

9. A hub bearing according to claim 8, wherein: The first connecting part (32) is detachably provided with a limiting block (7) at the end away from the second connecting part (33), the limiting block (7) abuts against the end face of the second nut (335) away from the second connecting part (33).

10. A wheel hub bearing assembly method based on the wheel hub bearing according to any one of claims 1-9, comprising the following steps: S1, mounting of the rolling element (4): mounting the rolling element (4) between the inner ring (1) and the outer ring (2); S2, mounting of the bearing body (3): mounting the bearing body (3) on the inner ring (1); S3, debugging and inspection.

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