CN213575165U

CN213575165U - Heavy vehicle wheel hub bearing

Info

Publication number: CN213575165U
Application number: CN202022532371.8U
Authority: CN
Inventors: 赵腾; 王阳
Original assignee: Ibi Ai Transmission System Shanghai Co ltd
Current assignee: Ibi Ai Transmission System Shanghai Co ltd
Priority date: 2020-11-05
Filing date: 2020-11-05
Publication date: 2021-06-29
Anticipated expiration: 2030-11-05

Abstract

The utility model provides a heavy-duty car wheel hub bearing, includes interior flange and outer flange, be provided with first raceway along the circumferencial direction on the first inner circle, be provided with a plurality of roll balls along the circumferencial direction interval between the inboard of outer flange and the first inner circle, the roll ball is located first raceway, be provided with the second inner circle between the outside of outer flange and the interior flange, be provided with the second raceway along the circumferencial direction on the second inner circle, be provided with a plurality of tapered rollers along the circumferencial direction interval between the outside of outer flange and the second inner circle, tapered roller is located the second raceway. The utility model discloses during the assembly earlier with tapered roller and second inner circle on impressing the inner flange, then put into the inner flange that the pressure equipment is good with outer flange and roll spheroid on, through first inner circle control axial play can when closing the cover. The bearing capacity of the tapered roller is larger than that of a rolling ball body, so that the fatigue failure time of the second raceway of the hub bearing is prevented from being earlier than that of the first raceway, the bearing is prevented from being abnormal and being incapable of being used, and the service life of the product is prolonged.

Description

Heavy vehicle wheel hub bearing

Technical Field

The utility model relates to the field of machinary, especially, relate to the wheel hub of vehicle, particularly a heavy vehicle wheel hub bearing.

Background

The hub bearing is one of the key parts of the automobile, and the main functions of the hub bearing are to bear the weight and provide accurate guidance for the rotation of the hub, so that the hub bearing is required to bear not only axial load but also radial load. In the prior art, the rolling bodies on two sides of the hub are rolling balls, under the condition of the running stress of the wheel, the bearing force of the rolling bodies on the outer side row is larger than that of the rolling bodies on the inner side row, namely, the stress and the shearing force on the surface of the raceway on the outer side row are larger, so that the fatigue failure probability of the outer side row is larger than that of the inner side row, the fatigue failure time of the raceway on the outer side row of the hub bearing is earlier than that of the raceway on the inner side row, and finally the bearing is abnormal and cannot be used.

Disclosure of Invention

An object of the utility model is to provide a heavy vehicle wheel hub bearing, this kind of heavy vehicle wheel hub bearing the outside that will solve among the prior art wheel hub bearing be listed as the raceway fatigue failure time earlier than inboard row raceway, finally lead to the bearing abnormal sound and the technical problem who can't use.

The utility model discloses a heavy vehicle wheel hub bearing, including inner flange and outer flange, outer flange cover is established on the inner flange, be provided with first inner circle between the inboard of outer flange and the inner flange, be provided with first raceway along the circumferencial direction on the first inner circle, be provided with a plurality of rolling spheroid along the circumferencial direction interval between the inboard of outer flange and the first inner circle, the rolling spheroid is located first raceway, wherein, be provided with the second inner circle between the outside of outer flange and the inner flange, circle along the circumferencial direction in the second and be provided with the second raceway, be provided with a plurality of tapered rollers along the circumferencial direction interval between the outside of outer flange and the second inner circle, tapered roller is located the second raceway.

Furthermore, the first inner ring and the second inner ring are respectively provided with a retainer.

Furthermore, a sealing ring is arranged between the outer flange and the second inner ring, and the sealing ring is positioned on the outer side of the tapered roller.

Compared with the prior art, the utility model, its effect is positive and obvious. The utility model discloses a during heavy-duty car hub bearing assembly will impress tapered roller and second inner circle on the inner flange earlier, then with outer flange and rolling spheroid put into the inner flange that the pressure equipment is good, when closing the cover through first inner circle control axial internal clearance can. The bearing capacity of the tapered roller is larger than that of a rolling ball body, so that the fatigue failure time of the second raceway of the hub bearing is prevented from being earlier than that of the first raceway, the bearing is prevented from being abnormal and being incapable of being used, and the service life of the product is prolonged. The tapered roller is arranged between the outer flange and the second inner ring, and the inner flange is not provided with a roller path, so that four processing procedures of the inner flange can be omitted, the cost is saved, and the production efficiency is improved.

Drawings

Fig. 1 is a schematic cross-sectional structural view of a heavy-duty wheel hub bearing according to the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and embodiments, but the present invention is not limited to this embodiment, and the protection scope of the present invention should be included in all similar structures and similar variations thereof.

Example 1

As shown in fig. 1, the utility model discloses a heavy vehicle wheel hub bearing, including inner flange 6 and outer flange 3, outer flange 3 cover is established on inner flange 6, be provided with first inner circle 1 between outer flange 3's inboard and the inner flange 6, be provided with first raceway along the circumferencial direction on the first inner circle 1, be provided with a plurality of rolling spheroid 2 along the circumferencial direction interval between outer flange 3's inboard and the first inner circle 1, rolling spheroid 2 is located first raceway, wherein, be provided with second inner circle 5 between outer flange 3's the outside and the inner flange 6, be provided with the second raceway along the circumferencial direction in the second inner circle 5, be provided with a plurality of tapered rollers 4 along the circumferencial direction interval between outer flange 3's the outside and the second inner circle 5, tapered rollers 4 are located the second raceway.

Further, the first inner ring 1 and the second inner ring 5 are respectively provided with a cage 8.

Further, a sealing ring 7 is arranged between the outer flange 3 and the second inner ring 5, and the sealing ring 7 is located on the outer side of the tapered roller 4.

Specifically, the rolling ball 2, the tapered roller 4, the retainer 8, and the seal ring 7 in this embodiment are all known in the art, and those skilled in the art will understand that they are not described herein again.

The working principle of the embodiment is as follows:

during assembly, the tapered rollers 4 and the second inner ring 5 are pressed into the inner flange 6, then the outer flange 3 and the rolling ball 2 are placed on the pressed inner flange 6, and the axial clearance is controlled by the first inner ring 1 during sleeve closing. The bearing capacity of the tapered roller 4 is larger than that of the rolling ball body 2, so that the fatigue failure time of the second raceway of the hub bearing is prevented from being earlier than that of the first raceway, the bearing is prevented from being abnormal and being incapable of being used, and the service life of the product is prolonged. The tapered rollers 4 are arranged between the outer flange 3 and the second inner ring 5, and the inner flange 6 is not provided with a raceway, so that four processing procedures of the inner flange 6 can be omitted, the cost is saved, and the production efficiency is improved.

Claims

1. The utility model provides a heavy vehicle wheel hub bearing, includes inner flange (6) and outer flange (3), outer flange (3) cover is established on inner flange (6), is provided with first inner circle (1) between the inboard of outer flange (3) and inner flange (6), is provided with first raceway along the circumferencial direction on first inner circle (1), is provided with a plurality of rolling spheroid (2) along the circumferencial direction interval between the inboard of outer flange (3) and first inner circle (1), and rolling spheroid (2) are located first raceway, its characterized in that: a second inner ring (5) is arranged between the outer side of the outer flange (3) and the inner flange (6), a second raceway is arranged on the second inner ring (5) along the circumferential direction, a plurality of tapered rollers (4) are arranged between the outer side of the outer flange (3) and the second inner ring (5) along the circumferential direction at intervals, and the tapered rollers (4) are located in the second raceway.

2. The heavy-duty wheel hub bearing of claim 1, wherein: the first inner ring (1) and the second inner ring (5) are respectively provided with a retainer (8).

3. The heavy-duty wheel hub bearing of claim 1, wherein: and a sealing ring (7) is arranged between the outer flange (3) and the second inner ring (5), and the sealing ring (7) is positioned on the outer side of the tapered roller (4).