CN217784020U

CN217784020U - Four-row hub bearing

Info

Publication number: CN217784020U
Application number: CN202222067359.3U
Authority: CN
Inventors: 童学根; 谢辉; 刘家林; 刘旭东
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: 2022-08-05
Filing date: 2022-08-05
Publication date: 2022-11-11
Anticipated expiration: 2032-08-05

Abstract

The utility model discloses a four-row hub bearing, including inner circle, outer lane, rolling element and holder, be equipped with two raceways and two raceways on the relative face of bearing inner circle, outer lane, two raceways set up the both ends of being close to the bearing, two raceways set up between two raceways, the setting is interior raceway, interior raceway in the inner circle, sets up outer raceway, outer raceway in the outer lane, the rolling element is including setting up tapered roller in the raceway and the ball of setting in the raceway, tapered roller and interior raceway, outer raceway are the line and connect the department, the ball is the point contact with interior raceway, outer raceway, the both ends of bearing still are equipped with seal assembly. By adopting the scheme, when the hub bearing receives the axial force, the tapered rollers and the balls are simultaneously stressed to bear larger axial force, two rows of balls in the bearing improve the bearing performance of the hub bearing, and the moment rigidity of the hub bearing is also improved.

Description

Four-row hub bearing

Technical Field

The utility model relates to a four-row hub bearing.

Background

The hub bearing is applied to an automobile axle for bearing and providing accurate guide for transmission of a hub, in the driving process of an automobile, the hub bearing is required to bear axial force and radial force and also to bear bending moment effect formed when the automobile turns, the moment rigidity obviously influences the driving comfort and steering stability of the automobile, the low moment performance can also obviously reduce energy consumption, high bearing performance is particularly important for large-sized vehicles, meanwhile, the moment rigidity cannot be ignored, the conventional hub bearing structure comprises paired double-row angular contact ball bearings and paired conical roller bearings, the paired double-row angular contact ball bearings have certain limitation on the moment rigidity in a certain supporting span range, the bearing performance is not strong, and the paired double-row conical roller bearings have high rigidity and high bearing performance but have large friction loss and are not beneficial to reducing the moment.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a four-row wheel hub bearing to improve the bearing and bear the stability that bigger axial force and reinforcing bearing bore.

In order to achieve the above purpose, the utility model provides a following technical scheme: a four-row hub bearing comprises an inner ring, an outer ring, rolling bodies and a retainer, wherein two rows of raceways and two rows of channels are arranged on the opposite surfaces of the inner ring and the outer ring of the bearing, the two rows of raceways are arranged at two ends close to the bearing, the two rows of channels are arranged between the two raceways, the inner raceway and the inner channel are arranged on the inner ring, the outer raceway and the outer channel are arranged on the outer ring, the rolling bodies comprise tapered rollers arranged in the raceways and balls arranged in the channels, the tapered rollers are in line connection with the inner raceway and the outer raceway, the balls are in point contact with the inner channel and the outer channel, and sealing components are arranged at two ends of the bearing.

As the utility model discloses a further improvement, seal assembly includes that sealing washer and rigid connection circle sealed lid in, the sealing washer is the skeleton of L shape for axial cross-section, the parcel has the elastic component on the skeleton, the one end that the outer lane was kept away from to the elastic component is equipped with the elasticity lip, skeleton and outer lane interference fit, elasticity lip and sealed interference fit that covers, sealed cover still be equipped with skeleton clearance fit's flange.

As a further improvement of the present invention, the elastic lips include a first elastic lip, a second elastic lip, and a third elastic lip, the first elastic lip and the second elastic lip are all in interference fit with the sealing cover, and the third elastic lip is in interference fit with the flange.

As a further improvement, the included angle between the sphere center of the ball and the straight line of the contact point of the ball and the inner channel and the radial line of the inner ring passing through the ball sphere center is 30 degrees to 40 degrees.

The utility model has the advantages that: by adopting the scheme, when the hub bearing receives the axial force, the tapered rollers and the balls are simultaneously stressed to bear larger axial force, two rows of balls in the bearing improve the bearing performance of the hub bearing, and the moment rigidity of the hub bearing is also improved.

Drawings

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

fig. 2 is a partially enlarged view of a portion a of fig. 1.

Reference numerals: 1. an inner ring; 2. an outer ring; 3. a tapered roller; 4. a ball bearing; 5. a framework; 6. an elastic member; 7. a first resilient lip; 8. a second resilient lip; 9. a third elastic lip; 10. an inner channel; 11. an inner raceway; 12. an outer channel; 13. an outer raceway; 14. a cage.

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 four-row hub bearing includes an inner ring, an outer ring, rolling elements and a retainer, where two rows of raceways and two rows of grooves are disposed on opposite surfaces of the inner ring and the outer ring of the bearing, the two rows of raceways are disposed at two ends of the bearing, the two rows of grooves are disposed between the two raceways, the inner ring is provided with an inner raceway and an inner groove, the outer ring is provided with an outer raceway and an outer groove, the rolling elements include tapered rollers disposed in the raceways and balls disposed in the grooves, the diameters of the tapered rollers are greater than those of the balls, the tapered rollers are in line connection with the inner raceway and the outer raceway, the balls are in point contact with the inner groove and the outer groove, and the two ends of the bearing are further provided with sealing assemblies. Due to the limitation of spatial position, the existing double-row tapered roller bearing for some heavy-duty trucks cannot meet the bearing requirement, two rows of balls are added, the bearing performance of the hub bearing is improved, the moment rigidity of the hub bearing is improved, four rows of rolling bodies are arranged, the bearing stability of the hub bearing is also enhanced, and the condition that the tapered roller bearing is unbalanced to cause stress concentration is avoided.

Seal assembly includes that sealing washer and rigid connection circle sealed lid in, the sealing washer is the skeleton of L shape for axial cross section, the parcel has the elastic component on the skeleton, the one end that the outer lane was kept away from to the elastic component is equipped with the elastic lip, skeleton and outer lane interference fit, elastic lip and sealed interference fit that covers, sealed covering still be equipped with skeleton clearance fit's flange, the elastic lip includes first elastic lip, second elastic lip, third elastic lip, first elastic lip, second elastic lip all with sealed interference fit that covers, third elastic lip and flange interference fit. The service environment of wheel hub bearing is relevant with weather or road environment usually, and inside for avoiding pollutants such as external muddy water, dust, grains of sand to get into the bearing, the event sets up seal assembly and seals the bearing, and the interference is provided with a plurality of elastic lips between sealed lid and the elastic component and seals, can prevent effectively that the bearing from the inside phenomenon that the bearing peeled off because of the contact pollutant appears of bearing, guarantees the normal operating of bearing.

The included angle between the spherical center of the ball and the straight line of the contact point of the ball and the inner channel and the radial line of the inner ring passing through the spherical center of the ball is 30-40 degrees, so that the ball can stably roll in the raceway.

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 modifications and embellishments within the scope of the present disclosure may be made by those skilled in the art without departing from the principles of the present disclosure.

Claims

1. The utility model provides a four-row wheel hub bearing, includes inner circle, outer lane, rolling element and holder, its characterized in that, be equipped with two raceways and two raceways on the relative face of inner circle, outer lane, two raceways set up the both ends of being close to the bearing, two raceways set up between two raceways, the setting is interior raceway, interior channel in the inner circle, and the setting is outer raceway, outer channel on the outer lane, the rolling element is including setting up tapered roller in the raceway and the ball of setting in the channel, tapered roller and interior raceway, outer raceway are the line and connect the department, the ball is the point contact with interior channel, outer channel, the both ends of bearing still are equipped with seal assembly.

2. The four-row hub bearing according to claim 1, wherein the seal assembly comprises a seal ring and a seal cover rigidly connected to the inner ring, the seal ring is a framework with an L-shaped axial cross section, the framework is wrapped with an elastic member, an elastic lip is arranged at one end of the elastic member away from the outer ring, the framework is in interference fit with the outer ring, the elastic lip is in interference fit with the seal cover, and a flange in clearance fit with the framework is further arranged on the seal cover.

3. The quad hub bearing of claim 2, wherein the resilient lips comprise a first resilient lip, a second resilient lip, and a third resilient lip, the first and second resilient lips each having an interference fit with the seal cover, and the third resilient lip having an interference fit with the flange.

4. A four row hub bearing according to claim 1, wherein the angle between the centre of sphere of the balls and the line of contact points of the balls with the inner channel and the radial line of the inner race passing through the centre of sphere of the balls is between 30 ° and 40 °.