CN218000156U

CN218000156U - Hub bearing with three rows of rollers

Info

Publication number: CN218000156U
Application number: CN202222294996.4U
Authority: CN
Inventors: 童学根; 刘家林; 刘旭东; 谢辉
Original assignee: Shanghai C&U Group Co Ltd; C&U Co Ltd
Current assignee: Shanghai C&U Group Co Ltd; C&U Co Ltd
Priority date: 2022-08-29
Filing date: 2022-08-29
Publication date: 2022-12-09
Anticipated expiration: 2032-08-29

Abstract

The utility model provides a wheel hub bearing with three rows of rollers, including outer lane, inner circle, a plurality of tapered roller and holder, outer lane and inner circle between be formed with two first raceways that are close to both sides department setting respectively, a plurality of tapered roller roll respectively and set up in two first raceways, still including a plurality of ball rollers, outer lane and interior circle on be provided with first slot part and second slot part respectively, first slot part and second slot part between be formed with the second raceway that is located two first raceways department, a plurality of ball rollers roll and set up in the second raceway, first slot part and second slot part all be the arc setting, and be the cooperation of four-point contact between second raceway that first slot part and second slot part formed and the ball roller. To the deficiency of prior art, the utility model provides a wheel hub bearing with three rows of rollers, it has higher bearing rigidity when satisfying high bearing capacity.

Description

Hub bearing with three rows of rollers

Technical Field

The utility model relates to a wheel hub bearing with three rows of rollers.

Background

The hub bearing is a part which is applied to an automobile axle and used for bearing and providing accurate guide for transmission of a hub, the hub bearing can be divided into a first-generation hub bearing, a second-generation hub bearing and a third-generation hub bearing according to the structure, the three hub bearings exist on the market at the same time, specific models are selected according to different use environments, the first-generation hub bearing is usually used on some trucks and heavy trucks, the first-generation hub bearing structure in the prior art is paired angular contact ball bearings or paired double-row tapered roller bearings, the moment rigidity of the paired double-row angular contact ball bearings in a certain support span range is limited, the bearing performance is not strong, the paired double-row tapered roller bearings have high rigidity and high bearing performance, but the friction loss is large, the moment is not beneficial to reducing, in the driving process of an automobile, the hub bearing is required to bear axial force and radial force and is required to bear bending moment effect formed when the automobile turns, the moment rigidity obviously influences the driving comfort and the steering stability of the automobile, the low moment performance can also be obviously reduced, and the high moment rigidity is especially important for large-size vehicles, and the requirement of the first-generation hub bearing in the prior art can not be ignored, and the high moment bearing capacity of the automobile bearing can not be met.

SUMMERY OF THE UTILITY MODEL

To the deficiency of prior art, the utility model provides a wheel hub bearing with three rows of rollers, it has higher bearing rigidity when satisfying high bearing capacity.

In order to realize above-mentioned purpose, the utility model provides a wheel hub bearing with three rows of rollers, including outer lane, inner circle, a plurality of tapered roller and be used for constituting interval, the tapered roller holder of guide to a plurality of tapered roller, outer lane and inner circle between be formed with two first raceways that are close to both sides department setting respectively, a plurality of tapered roller roll respectively and set up in two first raceways, still including a plurality of ball rollers, outer lane and interior circle on be provided with first slot part and second slot part respectively, first slot part and second slot part between be formed with the second raceway that is located two first raceways middle departments, a plurality of ball rollers roll and set up in the second raceway, first slot part and second slot part all be the arc setting, and be the cooperation of four point contact between second raceway and the ball roller that first slot part and second slot part formed.

The technical scheme has the advantages that: the rollers in the hub bearing are arranged into three rows, the two tapered rollers positioned at two sides are arranged, the first groove part and the second groove part form a second rolling path in the middle of the two first rolling paths, the plurality of ball balls are arranged in the second rolling path in a rolling mode, and the first groove part, the second groove part and the ball rollers are in four-point contact fit, so that when the hub bearing is subjected to radial load, two pressure lines originally formed by the two tapered rollers are matched with the ball rollers in the middle to form four pressure line bearing loads, when one side of the bearing in the bearing direction of the bearing is axially loaded, the tapered roller path at the other side of the bearing and the second rolling path are simultaneously stressed, when the bearing is subjected to moment load, three pressure lines bear loads, the bearing performance of the hub bearing is improved, the moment rigidity of the hub bearing is improved, the bearing stability of the hub bearing is also improved, the situation that the tapered roller bearing has unbalance loading to cause stress concentration is avoided, and in addition, the influence of the two rows of ball rollers arranged in the middle of the tapered rollers on the whole volume is small.

The utility model discloses can further set up to: the ball retainer comprises a ring portion and a plurality of pockets arranged on the ring portion at intervals, and the ring portion extends to the two sides of the second roller path.

Through further setting, form interval and guide to a plurality of ball rollers through the ball retainer, guarantee the even running of ball roller, and set up the ring portion of ball retainer into the shape that extends to the both sides department of second raceway, then because the ball roller sets up in the middle of two tapered roller, avoid interfering mutually with tapered roller, the tapered roller retainer of both sides when guaranteeing the ball retainer.

The utility model discloses can further set up to: the improved tapered roller bearing is characterized in that a boss and two annular abutting surfaces are arranged on the outer ring, the cross section of each annular abutting surface is obliquely extended, the annular abutting surfaces are matched with the tapered rollers in a sliding abutting mode, the boss is arranged between the two shape-changing abutting surfaces, the first groove is arranged on the boss, the boss and the inner ring are arranged at intervals, and the ring portion of the ball retainer extends to the interval between the boss and the inner ring.

Through further arrangement, the bulge part is connected between the two annular abutting surfaces, a step surface can be formed by the part, corresponding to the annular abutting surfaces, of the bulge part, the step surface is used for limiting the retainer of the tapered roller, and the tapered roller retainer and the ball retainer are prevented from interfering with each other.

The utility model discloses can further set up to: the inner ring comprises two symmetrically arranged ferrules, an arc surface and a flange are arranged on each ferrule, the arc surface is arranged at one end of each ferrule in the opposite direction, the second groove part is formed by splicing the two arc surfaces, and the flange can be abutted and limited with the tapered roller.

Through further setting, divide into two lassos with the inner circle, and set up cambered surface and flange on the lasso, constitute the second slot part by two cambered surfaces wherein, can be earlier with one of them lasso suit on the lasso when the bearing assembly, later install ball rod and ball holder, pack into another cover snare at last on the lasso, accomplish the installation, and the setting of flange can be spacing the tip of tapered roller when the operation on the one hand, on the other hand, when the installation, can utilize the flange to be spacing tapered roller and tapered roller holder on the lasso, easy to assemble.

The utility model discloses can further set up to: including sealing washer and retaining ring, sealing washer and retaining ring suit respectively on outer lane and inner circle, the sealing washer including a plurality of seal lips, the cross-section of retaining ring be L shape and including connecting portion and occlusion part, a plurality of seal lips butt respectively on connecting portion and occlusion part.

Through further arrangement, the automobile can run in different weathers, the automobile hub bearing can inevitably contact various external pollutants, such as dust, muddy water and the like, and the external pollutants can be prevented from entering the interior of the hub bearing through the matching of the sealing ring and the retaining ring, so that the normal operation of the hub bearing is ensured.

Drawings

Fig. 1 is a top view of an embodiment of the present invention;

fig. 2 isbase:Sub>A cross-sectional view taken along linebase:Sub>A-base:Sub>A in fig. 1 according to an embodiment of the present invention;

fig. 3 is an enlarged view of a portion a in fig. 2 according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of an outer ring in an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a ferrule according to an embodiment of the present invention;

wherein: an outer ring 1; a first groove portion 11; a boss portion 12; an annular abutment surface 13; an inner ring 2; a second groove portion 21; a ferrule 22; a cambered surface 23; a flange 24; a tapered roller 3; a tapered roller retainer 4; a ball roller 5; a ball retainer 6; a ring portion 61; a seal ring 7; a seal lip 71; a retainer ring 8; a connecting portion 81; the shielding portion 82.

Detailed Description

An embodiment of a hub bearing with three rows of rollers according to the invention is shown in fig. 1-5: including outer lane 1, inner circle 2, a plurality of tapered roller 3 and be used for constituting interval, the tapered roller holder 4 of guide to a plurality of tapered rollers, outer lane 1 and inner circle 2 between be formed with and be close to two first raceways that both sides department set up respectively, a plurality of tapered roller 3 roll respectively and set up in two first raceways, still including a plurality of ball rollers 5, outer lane 1 and inner circle 2 on be provided with first slot part 11 and second slot part 21 respectively, first slot part 11 and second slot part 21 between be formed with the second raceway that is located two first raceways middle departments, a plurality of ball rollers 5 roll and set up in the second raceway, first slot part 11 and second slot part 21 all be the arc setting, and be the four point contact cooperation between second raceway that first slot part 11 and second slot part 21 formed and the ball roller 5.

The second raceway is provided with a ball retainer 6, the ball retainer 6 comprises a ring part 61 and a plurality of pockets arranged on the ring part 61 at intervals, and the ring part 61 extends to two sides of the second raceway.

The utility model discloses a ball retainer, including outer lane 1, the cross-section of annular butt face 13 is the slope and extends the setting, and the cooperation of slip butt between annular butt face 13 and tapered roller 3 is provided with bellying 12 and two annular butt faces 13 on the outer lane 1, the bellying 12 set up and trade and locate between two shape butt faces 13, first slot part 11 set up on bellying 12, bellying 12 and inner circle 2 between the interval set up, and the ring portion of ball retainer 6 extends to the interval department of bellying 12 and inner circle 2.

The inner ring 2 comprises two symmetrically arranged ferrules 22, an arc surface 23 and a flange 24 are arranged on each ferrule 22, the arc surface 23 is arranged at one end of each of the two ferrules 22, the two arc surfaces 23 are opposite to each other, the second groove part 21 is formed by splicing the two arc surfaces 23, and the flange 24 can be abutted and limited with the tapered roller 3.

Still including sealing washer 7 and retaining ring 8, sealing washer 7 and retaining ring 8 suit respectively on outer lane 1 and inner circle 2, sealing washer 7 including a plurality of seal lips 71, retaining ring 8 the cross-section be L shape and including connecting portion 81 and shielding portion 82, a plurality of seal lips 71 respectively the butt on connecting portion 81 and shielding portion 82.

The above examples are only one of the preferred embodiments of the present invention, and the general changes and substitutions within the technical scope of the present invention are all included in the protection scope of the present invention.

Claims

1. A hub bearing with three rows of rollers comprises an outer ring, an inner ring, a plurality of tapered rollers and a tapered roller retainer for spacing and guiding the tapered rollers, wherein two first roller paths which are respectively close to two sides are formed between the outer ring and the inner ring, the tapered rollers are respectively arranged in the two first roller paths in a rolling manner, and the hub bearing is characterized in that: including a plurality of ball rollers, outer lane and inner circle on be provided with first slot part and second slot part respectively, first slot part and second slot part between be formed with the second raceway that is located two first raceways middle departments, a plurality of ball rollers roll and set up in the second raceway, first slot part and second slot part all be the arc setting, and be the cooperation of four point contact between second raceway that first slot part and second slot part formed and the ball roller.

2. The hub bearing with three rows of rollers of claim 1, wherein: the second raceway department be provided with the ball retainer, the ball retainer including ring portion and a plurality of pockets of interval setting on the ring portion, the ring portion extend to the both sides department of second raceway.

3. The hub bearing with three rows of rollers of claim 2, wherein: the improved tapered roller bearing is characterized in that a boss and two annular abutting surfaces are arranged on the outer ring, the cross section of each annular abutting surface is obliquely extended, the annular abutting surfaces are matched with the tapered rollers in a sliding abutting mode, the boss is arranged between the two shape-changing abutting surfaces, the first groove is arranged on the boss, the boss and the inner ring are arranged at intervals, and the ring portion of the ball retainer extends to the interval between the boss and the inner ring.

4. The hub bearing with three rows of rollers of claim 3, wherein: the inner ring comprises two symmetrically arranged ferrules, an arc surface and a flange are arranged on each ferrule, the arc surface is arranged at one end of each ferrule in the opposite direction, the second groove part is formed by splicing the two arc surfaces, and the flange can be abutted and limited with the tapered roller.

5. The hub bearing with three rows of rollers of claim 1, wherein: including sealing washer and retaining ring, sealing washer and retaining ring suit respectively on outer lane and inner circle, the sealing washer including a plurality of seal lips, the cross-section of retaining ring be L shape and including connecting portion and occlusion part, a plurality of seal lips butt respectively on connecting portion and occlusion part.