Hub bearing with pre-tightening adjusting structure

Abstract

The utility model discloses a hub bearing with a pre-tightening adjusting structure, which comprises a bearing assembly, a flange ring and an adjusting ring, the bearing assembly consists of a bearing outer ring, a bearing inner ring and a roller assembly and is arranged in a bearing chamber of the flange ring, the adjusting ring is connected between the bearing chamber and the bearing outer ring through threads, the bottom of the adjusting ring is an inclined surface of 0.5-1 degree, and the adjusting ring is in contact with the bearing outer ring. The fastening assembly comprises a plurality of sets of fastening bolts and friction discs, the fastening bolts are in threaded connection with the operation part, one ends of the fastening bolts are fixedly connected with the friction discs, the friction surfaces A of the friction discs and the friction surfaces B of the main ring are pressed tightly, and stability after adjustment is ensured. According to the design, the pre-tightening force of the bearing is adjusted by rotating the adjusting ring.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of wheel hub bearing, specifically a wheel hub bearing with pre -tightening adjustment structure. BACKGROUND

[0002] Wheel hub bearing is a key component in vehicle transmission system, and its performance directly affects the carrying capacity, steering stability and driving safety of the vehicle. The traditional wheel hub bearing usually adopts fixed pre -tightening force design, that is, the bearing is assembled by interference fit or fixed compression to apply pre -tightening force, so as to ensure that the bearing has no play in the running process and improve rigidity, however, this fixed pre -tightening method has significant defects, that is, the pre -tightening force of the traditional bearing is fixed after assembly, and cannot be dynamically adjusted according to the actual working condition (such as load change, temperature fluctuation or long -term wear). When the pre -tightening force is too large, it will increase the friction resistance of the bearing, cause the heat to intensify, the energy consumption rises, and even shortens the service life of the bearing, when the pre -tightening force is too small, it may cause the bearing play to increase, reduce the transmission accuracy, cause vibration or abnormal sound, furthermore, after long -term use, the pre -tightening force may be attenuated due to wear or plastic deformation, but the traditional structure cannot conveniently readjust the pre -tightening force, and generally needs to replace the bearing as a whole, so the maintenance cost is high. SUMMARY

[0003] In view of the above-mentioned deficiencies in the prior art, the utility model aims to provide a wheel hub bearing with adjustable pre -tightening force, so as to facilitate subsequent maintenance adjustment, and ensure that the pre -tightening force is stable for a long time.

[0004] The utility model discloses the technical scheme adopted for realizing the above-mentioned purpose is: a wheel hub bearing with pre -tightening adjustment structure, including bearing assembly, flange ring and adjusting ring, the bearing assembly includes bearing outer ring, bearing inner ring, roller assembly, the bearing outer ring with the bearing inner ring is equipped with the roller assembly, the flange ring is equipped with bearing chamber, the inside of bearing chamber is equipped with the bearing assembly, the bearing outer ring with the inner wall of bearing chamber is equipped with the adjusting ring, the outer wall of adjusting ring with the inner wall of bearing chamber is connected in screw thread, the section bottom of adjusting ring is inclined plane, the inclined plane with the bearing outer ring and resist the touch, the adjusting ring is equipped with fastening assembly.

[0005] In the above technical scheme, the flange ring includes the main ring and the flange part that is integrated with the main ring, and the main ring is provided with the bearing chamber.

[0006] In the above technical scheme, one end of the adjusting ring is provided with an operating part, and an adjusting interval is arranged between the operating part and the main ring. A friction tooth groove is arranged on the operating part, and a position mark is arranged on the front end face of the operating part.

[0007] In the technical scheme, the fastening assembly comprises fastening bolts and friction discs, a plurality of groups of the fastening bolts are bolt-connected to the end face of the operation part, the inner ends of the fastening bolts are fixedly connected with the friction discs, the end face of the friction disc is provided with a friction surface A, the end face of the main ring is provided with a friction surface B, and the friction surface A is in abutment with the friction surface B.

[0008] In the technical scheme, the end face of the operation part is provided with a countersunk hole matched with each group of the fastening bolts, and the nut of the fastening bolt is located in the countersunk hole.

[0009] In the technical scheme, the high point of the inclined surface is close to the flange ring.

[0010] In the technical scheme, the inclination angle of the inclined surface is 0.5-1°.

[0011] Compared with the prior art, the utility model has the advantages of:

[0012] 1. By rotating the adjusting ring, the adjusting ring can be axially moved, the inclined surface of the inner wall of the adjusting ring is extruded to extrude the outer ring of the bearing, the pre-tightening force is adjusted, the pre-tightening force is adjusted without complete disassembly, and the pre-tightening force is adjusted without complete disassembly.

[0013] 2. The adjusting ring is provided with a fastening assembly, when the adjusting ring is rotated to the position, the friction disc is in abutment with the end face of the main ring by rotating the fastening bolt, the friction force is increased by cooperation of the friction surface A and the friction surface B, the adjusting ring is fixed, the adjusting ring is prevented from being returned due to vibration, and the pre-tightening force is long-term stable. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the utility model;

[0015] Figure 2 It is another angle structural schematic view of the utility model;

[0016] Figure 3 It is a sectional structure schematic view of the utility model;

[0017] Figure 4 It is an exploded structural schematic view of the utility model;

[0018] Figure 5 It is a sectional structure schematic view of the adjusting ring in the utility model;

[0019] Figure 6 It is a structural schematic view of the fastening assembly in the utility model.

[0020] In the figure: 100 bearing assembly, 101 bearing outer ring, 102 bearing inner ring, 103 roller assembly, 200 flange ring, 201 main ring, 202 flange part, 203 bearing chamber, 300 adjusting ring, 301 inclined surface, 302 operation part, 303 adjusting interval, 304 position mark, 400 fastening assembly, 401 fastening bolt, 402 friction disc, 403 friction surface A, 404 friction surface B. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.

[0022] Please refer to Figures 1-6 A hub bearing with pre-tightening adjusting structure, comprising a bearing assembly 100, a flange ring 200 and an adjusting ring 300, wherein the bearing assembly 100 comprises a bearing outer ring 101, a bearing inner ring 102 and a roller assembly 103, that is, the roller assembly 103 is matched between the bearing outer ring 101 and the bearing inner ring 102;

[0023] The flange ring 200 comprises a main ring 201 and a flange part 202 in an integral structure with the main ring 201, the main ring 201 is provided with a bearing chamber 203, and the bearing assembly 100 is arranged inside the bearing chamber 203, further, the adjusting ring 300 is arranged between the bearing outer ring 101 and the inner wall of the bearing chamber 203, and the outer wall of the adjusting ring 300 is threadedly connected with the inner wall of the bearing chamber 203, in addition, the cross-section bottom of the adjusting ring 300 is an inclined surface 301, the inclined surface 301 abuts against the bearing outer ring 101, further, the operation part 302 is arranged at one end of the adjusting ring 300, the adjusting interval 303 is arranged between the operation part 302 and the main ring 201, the adjusting ring 300 can be driven to rotate through the operation part 302, so that the adjusting ring 300 generates axial displacement, then the bearing outer ring 101 is extruded under the action of the inclined surface 301, the pre-tightening force is adjusted, so that the pre-tightening force is adjusted without complete disassembly, which is convenient for subsequent maintenance or re-adjustment when the working condition changes, further, the high point position of the above-mentioned inclined surface 301 is close to the flange ring, that is, the bearing outer ring 101 is extruded when the adjusting ring 300 is axially displaced to the inside, in the embodiment, the inclination angle of the inclined surface 301 is 0.5-1°;

[0024] Further, the friction tooth groove is arranged on the operation part 302, the position mark 304 is arranged on the front end surface of the operation part 302, the friction force of the operation part 302 can be increased through the friction tooth groove, so that the tool is clamped, and the position mark 304 is used for intuitively indicating the position of the adjusting ring 300, so as to facilitate subsequent adjustment;

[0025] Further, the fastening assembly 400 is arranged on the adjusting ring 300, and the fastening assembly 400 comprises fastening bolts 401 and friction discs 402, that is, a plurality of groups of fastening bolts 401 are bolted on the end face of the operation part 302, the inner ends of the fastening bolts 401 are fixedly connected with the friction discs 402, the end face of the friction disc 402 is provided with a friction surface A 403, the end face of the main ring 201 is provided with a friction surface B 404, the friction surface A 403 is in abutment with the friction surface B 404, so that when the adjusting ring 300 is rotated to the position, the friction disc 402 can be abutted with the end face of the main ring 201 by rotating the fastening bolts 401, and the friction force is increased by the cooperation of the friction surface A 403 and the friction surface B 404, so that the adjusting ring 300 can be fixed, the vibration back of the adjusting ring 300 is effectively prevented, the long-term stability of the pre-tightening force is ensured, and in addition, the headless hole is arranged on the end face of the operation part 302 in cooperation with each group of fastening bolts 401, and the nut of the fastening bolt 401 is located in the headless hole, so that the fastening bolt 401 is avoided from protruding and causing component interference.

[0026] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as illustrative and not restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended to embrace all changes falling within the meaning and range of equivalents of the claims. Any reference signs in the claims should not be considered as limiting the claims involved.

[0027] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be properly combined to form other embodiments that those skilled in the art can understand.

Claims

1. A wheel hub bearing with a pre-tightening adjustment structure, comprising a bearing assembly (100), a flange ring (200) and an adjustment ring (300), the bearing assembly (100) comprising a bearing outer ring (101), a bearing inner ring (102), a roller assembly (103) fitted between the bearing outer ring (101) and the bearing inner ring (102), characterized in that: The flange ring (200) is provided with a bearing chamber (203), the bearing assembly (100) is arranged in the bearing chamber (203), the adjusting ring (300) is arranged between the bearing outer ring (101) and the inner wall of the bearing chamber (203), the outer wall of the adjusting ring (300) is threadedly connected with the inner wall of the bearing chamber (203), the section bottom of the adjusting ring (300) is a slope (301), the slope (301) is in abutment with the bearing outer ring (101), and the adjusting ring (300) is provided with a fastening assembly (400).

2. The hub bearing with a pre-tightening adjustment structure according to claim 1, characterized in that: The flange ring (200) comprises a main ring (201) and a flange part (202) in an integral structure with the main ring (201), and the main ring (201) is provided with the bearing chamber (203).

3. The hub bearing with a pre-tightening adjustment structure according to claim 2, characterized in that: One end of the adjusting ring (300) is provided with an operation part (302), the operation part (302) is provided with an adjusting interval (303) between the main ring (201), the operation part (302) is provided with a friction tooth groove, and the front end face of the operation part (302) is provided with a position mark (304).

4. The hub bearing with a pre-tightening adjustment structure according to claim 3, characterized in that: The fastening assembly (400) comprises a fastening bolt (401) and a friction disc (402), a plurality of groups of the fastening bolt (401) are threadedly connected on the end face of the operation part (302), the inner end of the fastening bolt (401) is fixedly connected with the friction disc (402), the end face of the friction disc (402) is provided with a friction surface A (403), the end face of the main ring (201) is provided with a friction surface B (404), the friction surface A (403) is in abutment with the friction surface B (404).

5. The hub bearing with a pre-tightening adjustment structure according to claim 4, characterized in that: The end face of the operation part (302) is provided with a countersunk hole matched with each group of the fastening bolt (401), and the nut of the fastening bolt (401) is located in the countersunk hole.

6. The hub bearing with a pre-tightening adjustment structure according to claim 1, characterized in that: The high point position of the slope (301) is close to the flange ring (200).

7. The hub bearing with a pre-tightening adjustment structure according to claim 6, characterized in that: The inclination angle of the slope (301) is 0.5-1°.

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