Automobile hub with long service life

Abstract

The utility model relates to an automobile hub with long service life, which comprises a hub body, an inner bearing hole, an inner cavity and an outer bearing hole are sequentially arranged in the middle of the hub body, and the automobile hub is technically characterized in that a reinforcing sleeve is fastened on the outer peripheral surface of the hub body and consists of a sleeve, a limit ring arranged at the front end of the sleeve and a flange body arranged on the outer peripheral surface of the sleeve; radial positioning screws are arranged on the peripheral face of the sleeve, axial positioning screws are arranged on the limiting ring, an annular groove surrounding the periphery of the inner cavity is formed in the peripheral face of the hub body, and a cooling medium storage cavity is formed between the annular groove and the inner wall of the sleeve. A front sealing ring located on the front side of the annular groove and a rear sealing ring located on the rear side of the annular groove are arranged on the inner wall of the sleeve, one radial positioning screw is a hollow screw, an oil injection hole is formed in a nut of the radial positioning screw, and an oil injection channel communicated with the hollow screw and the inner cavity is formed in the hub body. The heat dissipation performance is obviously improved, the service life is prolonged, and the safety is high.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to an automobile wheel hub with a long service life. Background Art

[0002] The wheel hub is an important component in the automobile brake assembly, used to connect the brake hub and the half-axle. During vehicle driving, under the action of ground friction and frequent braking force, the wheel hub and the brake device generate relatively large torque, which directly affects safety performance.

[0003] CN 205997651 U discloses a wheel hub for driving a road roller. The wheel hub comprises a wheel hub body, which is provided with an inner bearing hole, a wheel hub inner cavity, and an outer bearing hole, sequentially from the inside out. The inner bearing hole and the outer bearing hole are located on either side of the wheel hub inner cavity, and the diameter of the wheel hub inner cavity gradually increases from the inner bearing hole toward the outer bearing hole. A ring of reinforcing plates is evenly arranged on the outer wall surface of the inner bearing hole. The wheel hub body is provided with an oil guide hole connected to the wheel hub inner cavity. Compared with traditional automobile wheel hubs, this wheel hub has higher strength, is less prone to damage, and has a longer service life. However, the following problem still exists: during use, the frictional heat generated between the bearing and the shaft is cooled only by the lubricating oil injected through the oil guide hole, resulting in poor heat dissipation and shortening the service life. Utility Model Content

[0004] The purpose of the utility model is to provide a car wheel hub with a reasonable structure, reliable use and long service life to solve the above problems, which significantly improves heat dissipation, prolongs service life and has high safety.

[0005] The technical solution of the utility model is:

[0006] The wheel hub of the present invention has the advantages that: the wheel hub body has a large inner diameter, and the wheel hub body has a large inner diameter, and the wheel hub body has a large inner diameter. The wheel hub body has a large inner diameter, and the wheel hub body has a large inner diameter. The wheel hub body has a large inner diameter, and the wheel hub body has a large inner diameter.

[0007] In the above-mentioned automobile wheel hub with a long service life, the rear end surface of the wheel hub body is provided with a first mounting screw hole group, and the front end surface of the limiting ring is provided with a second mounting screw hole group.

[0008] In the above-mentioned automobile wheel hub with long service life, the inner wall of the sleeve is provided with a front annular stop surface located in front of the front sealing ring, and a rear annular stop surface located in rear of the rear sealing ring.

[0009] In the above-mentioned automobile wheel hub with a long service life, the number of the front sealing ring and the number of the rear sealing ring are respectively two.

[0010] In the above-mentioned automobile wheel hub with a long service life, an injection port corresponding to the cooling medium storage cavity is provided on the outer peripheral wall of the sleeve.

[0011] The beneficial effects of the utility model are:

[0012] 1. It adopts a split structure, consisting of a hub body and a reinforcement sleeve. The annular groove of the hub body and the reinforcement sleeve form a cooling medium storage cavity, which surrounds the inner cavity to achieve cooling of the inner cavity. The cooled lubricating oil enters between the bearing and the shaft to achieve enhanced cooling effect, thereby significantly improving heat dissipation and extending the service life of the hub.

[0013] 2. Use the hollow of the radial positioning screw to connect with the oil injection channel to avoid too many openings and ensure the strength of use. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0015] In the figure: 1. Flange body, 2. Second mounting screw hole group, 3. Sleeve, 4. Oil filling hole, 5. Inlet, 6. Annular groove, 7. Radial positioning screw, 8. First mounting screw hole group, 9. Rear sealing ring, 10. Hub body, 11. Front sealing ring, 12. Limiting ring, 13. Axial positioning screw, 14. Oil filling channel, 15. Inner cavity, 16. Front annular stop surface, 17. Rear annular stop surface. DETAILED DESCRIPTION

[0016] The utility model is described in detail according to the accompanying drawings.

[0017] like Figure 1As shown, the automobile wheel hub with a long service life includes a hub body 10, the middle portion of which is provided with an inner bearing hole, an inner cavity 15, and an outer bearing hole in sequence. A reinforcement sleeve is fastened to the outer circumference of the hub body 10, and the reinforcement sleeve is composed of a sleeve 3, a retaining ring 12 provided at the front end of the sleeve 3, and a flange body 1 provided on the outer circumference of the sleeve 3. A plurality of radial positioning screws 7 connected to the outer circumference of the hub body 10 are provided on the outer circumference of the sleeve 3. One of the radial positioning screws 7 is a hollow nail, and an oil filling hole 4 is provided at its nut. An oil filling channel 14 connecting the hollow nail and the inner cavity 15 is provided inside the hub body 10. A plurality of axial positioning screws 13 connected to the front end of the hub body 10 are provided on the retaining ring 12.

[0018] An annular groove 6 surrounding the outer periphery of the inner cavity 15 is provided on the outer peripheral surface of the hub body 10, and a cooling medium storage cavity is formed between the annular groove 6 and the inner wall of the sleeve 3. In this embodiment, an injection port 5 corresponding to the cooling medium storage cavity is provided on the outer peripheral wall of the sleeve 3.

[0019] The inner wall of the sleeve 3 is provided with a front sealing ring 11 located in front of the annular groove 6, and a rear sealing ring 9 located behind the annular groove 6. In this embodiment, there are two front sealing rings 11 and two rear sealing rings 9. The inner wall of the sleeve 3 is provided with a front annular stop surface 16 located in front of the front sealing ring 11, and a rear annular stop surface 17 located behind the rear sealing ring 9.

[0020] The rear end surface of the hub body 10 is provided with a first mounting screw hole group 8 , and the front end surface of the limiting ring 12 is provided with a second mounting screw hole group 2 .

[0021] During assembly, the reinforcement sleeve is buckled onto the outside of the hub body 10 from front to back, and then connected and fixed using the radial limit screws 7 and the axial limit screws 13 .

[0022] The above detailed description of the embodiments of the present invention is intended to be a preferred embodiment of the present invention and should not be construed as limiting the scope of implementation of the present invention. Any equivalent changes and improvements made within the scope of the present invention shall still fall within the scope of this patent.

Claims

1. A car wheel hub with a long service life, comprising a wheel hub body, wherein the middle portion of the wheel hub body is provided with an inner bearing hole, an inner cavity and an outer bearing hole in sequence, and wherein: The outer circumference of the hub body is buckled with a reinforcement sleeve, which consists of a sleeve, a limiting ring arranged at the front end of the sleeve, and a flange body arranged on the outer circumference of the sleeve. The outer circumference of the sleeve is provided with a plurality of radial positioning screws connected to the outer circumference of the hub body, and the limiting ring is provided with a plurality of axial positioning screws connected to the front end face of the hub body. The outer circumference of the hub body is provided with an annular groove surrounding the outer circumference of the inner cavity, and a cooling medium storage cavity is formed between the annular groove and the inner wall of the sleeve. The inner wall of the sleeve is provided with a front sealing ring located on the front side of the annular groove and a rear sealing ring located on the rear side of the annular groove. One of the radial positioning screws is a hollow nail, and an oil filling hole is provided at its nut. The inside of the hub body is provided with an oil filling channel connecting the hollow nail and the inner cavity.

2. The automobile wheel hub with a long service life according to claim 1, characterized in that: A first mounting screw hole group is provided on the rear end surface of the hub body, and a second mounting screw hole group is provided on the front end surface of the limiting ring.

3. The automobile wheel hub with a long service life according to claim 1, characterized in that: A front annular stop surface located at the front side of the front sealing ring and a rear annular stop surface located at the rear side of the rear sealing ring are provided on the inner wall of the sleeve.

4. The automobile wheel hub with a long service life according to claim 1, characterized in that: There are two front sealing rings and two rear sealing rings respectively.

5. The automobile wheel hub with a long service life according to claim 1, characterized in that: An injection port corresponding to the cooling medium storage cavity is provided on the outer peripheral wall of the sleeve.

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