CN218000154U

CN218000154U - Conical hub bearing

Info

Publication number: CN218000154U
Application number: CN202222460604.7U
Authority: CN
Inventors: 郭雨丰
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: 2022-09-15
Filing date: 2022-09-15
Publication date: 2022-12-09
Anticipated expiration: 2032-09-15

Abstract

The utility model discloses a tapered wheel hub bearing, including bearing inner circle, bearing inner race, first holder, second holder, install the tapered roller on first, second holder respectively, be equipped with the outer raceway of two different angles on the internal diameter face of bearing inner race, the bearing inner circle is split type setting, and it includes first inner circle, second inner circle, it is equipped with the interior raceway of the same angle to correspond outer raceway respectively on the external diameter face of first inner circle, second inner circle, tapered roller is the line contact cooperation with interior raceway, outer raceway, the both ends of bearing inner circle still are equipped with seal assembly. Adopt above-mentioned technical scheme, through the tapered roller at the different angles of bearing both sides installation, choose for use the roller of different length or adopt different roller numbers, the seal assembly of both sides prevents that the bearing is inside to be invaded by external impurity, under the prerequisite that satisfies installation space, satisfies the customer to bearing life's demand.

Description

Conical hub bearing

Technical Field

The utility model relates to a circular cone wheel hub bearing.

Background

The tapered wheel hub bearing generally includes bearing inner and outer lane, holder, roller, and for preventing external impurity from getting into, the both sides of bearing still are equipped with seal assembly, and consequently the good bad and the life of bearing of seal assembly performance have great relation, and the roller installation of traditional tapered wheel hub bearing both sides adopts the same angle, and when adopting the same angle installation roller, the bearing is in the restriction of structure and size, and the installation space restriction in the bearing can't satisfy customer to bearing life's demand.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a long service life, the reliable circular cone wheel hub bearing of seal structure satisfy the customer to bearing life's demand.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a tapered wheel hub bearing, includes bearing inner race, first holder, second holder, installs the tapered roller on first, second holder respectively, be equipped with the outer raceway of two different angles on the inner diameter face of bearing inner race, the bearing inner race is split type setting, and it includes first inner race, second inner race, correspond the inner raceway that outer raceway was equipped with the same angle respectively on the outer diameter face of first inner race, second inner race, tapered roller and inner raceway, outer raceway are the line contact cooperation, the both ends of bearing inner race still are equipped with seal assembly.

As the utility model discloses a further improvement, seal assembly includes skeleton, parcel rubber sleeve, the shield of rigid connection in the bearing inner circle on the skeleton, the one end and the bearing inner race interference fit of skeleton, its other end pass through rubber sleeve and shield interference fit.

As a further improvement of the utility model, the shaft cross-section of shield is \21274;, and the shape is equipped with first arch, second arch, third arch on the rubber sleeve, first arch adopts clearance fit with the shield, second arch, third arch and shield adopt interference fit.

As a further improvement, the third convex shaft section is a herringbone, the upper end of the third convex is provided with an annular groove, and the annular groove is internally provided with a spring ring.

The utility model has the advantages that: adopt above-mentioned technical scheme, through the tapered roller at the different angles of bearing both sides installation, choose for use the roller of different length or adopt different roller numbers, the seal assembly of both sides prevents that the bearing is inside to be invaded by external impurity, under the prerequisite that satisfies installation space, satisfies the customer to bearing life's demand.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is an enlarged schematic view of a point a in fig. 1.

Reference numerals: 1. a bearing outer race; 2. a first holder; 3 a second cage; 4. an outer raceway; 5. an inner raceway; 6. a first inner race; 7. a second inner race; 8. a spring ring; 9. a framework; 10. a rubber sleeve; 11. a dust cover; 12. a first protrusion; 13. a second protrusion; 14. and a third protrusion.

Detailed Description

The present invention will be described in further detail with reference to embodiments shown in the drawings.

Referring to fig. 1-2, a tapered hub bearing includes a bearing inner ring, a bearing outer ring 1, a first retainer 2, a second retainer 3, and tapered rollers respectively mounted on the first retainer and the second retainer 3, wherein two outer raceways 4 with different angles are provided on an inner diameter surface of the bearing outer ring 1, the bearing inner ring is in a split type arrangement and includes a first inner ring 6 and a second inner ring 7, inner raceways 5 with the same angle are provided on outer diameter surfaces of the first inner ring 6 and the second inner ring 7 respectively corresponding to the outer raceways 4, the split type inner ring is adopted to facilitate adjusting play of the bearing by controlling axial distance of the two inner rings, and thus more rollers can be loaded to increase load capacity, the tapered rollers are in line contact fit with the inner raceways 5 and the outer raceways 4, and sealing assemblies are further provided at two ends of the bearing inner ring. In a conventional conical hub bearing, because a bearing stress center and a bearing center have offset, the forces borne by two rows of rollers in the bearing are different, and a row of bearing with larger stress for a long time can first fail due to fatigue, so that the service life of the bearing is shortened.

The sealing assembly comprises a framework 9, a rubber sleeve 10 wrapped on the framework 9, and a dust cover 11 rigidly connected to a bearing inner ring, wherein one end of the framework 9 is in interference fit with a bearing outer ring 1, the other end of the framework is in interference fit with the dust cover 11 through the rubber sleeve 10, the shaft section of the dust cover 11 is in a shape of '21274', the rubber sleeve 10 is provided with a first bulge 12, a second bulge 13 and a third bulge 14, the first bulge 12 and the dust cover 11 are in clearance fit for avoiding interference between the dust cover 11 and the framework 9, the second bulge 13, the third bulge 14 and the dust cover 11 are in interference fit, the second bulge 13 is in interference fit with each other, the second bulge 13 is in connection between the two end faces of the dust cover 11, the third bulge 14 is in butt connection with the end face of the dust cover 11 close to the bearing inner ring, the interference fit at two positions prevents impurities in the external spring ring from entering the bearing to cause bearing failure and simultaneously prevent the grease in the internal part from flowing out, the shaft section of the third bulge 14 is in a herringbone shape, the upper end of the third bulge 14 is provided with an annular groove, the annular spring ring 8 is compressed tightly against the central spring ring, and the central spring ring, so that the third bulge 14 is tightly pressed on the bearing inner ring to enable the bearing to tightly cover 11.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a tapered wheel hub bearing, includes bearing inner race, first holder, second holder, installs the tapered roller on first, second holder respectively, a serial communication port, be equipped with the outer raceway of two different angles on the internal diameter face of bearing inner race, the bearing inner race is split type setting, and it includes first inner race, second inner race, it is equipped with the interior raceway of the same angle to correspond outer raceway respectively on the external diameter face of first inner race, second inner race, tapered roller is the line contact cooperation with interior raceway, outer raceway, the both ends of bearing inner race still are equipped with seal assembly.

2. The conical hub bearing of claim 1, wherein the seal assembly comprises a frame, a rubber sleeve wrapped on the frame, and a dust cap rigidly connected to the bearing inner ring, wherein one end of the frame is in interference fit with the bearing outer ring, and the other end of the frame is in interference fit with the dust cap through the rubber sleeve.

3. The conical hub bearing of claim 2, wherein the axial cross-section of the dust cover is a v-21274, the rubber sleeve is provided with a first protrusion, a second protrusion and a third protrusion, the first protrusion is in clearance fit with the dust cover, and the second protrusion and the third protrusion are in interference fit with the dust cover.

4. The conical hub bearing of claim 3, wherein the axial cross section of the third protrusion is a chevron shape, and the upper end of the third protrusion is provided with an annular groove, and the annular groove is provided with a spring ring.