CN210565795U

CN210565795U - Bearing capable of preventing ring from running

Info

Publication number: CN210565795U
Application number: CN201921649710.1U
Authority: CN
Inventors: 许桂婵
Original assignee: Wafangdian Chengxin Jinggong Bearing Co Ltd
Current assignee: Wafangdian Chengxin Jinggong Bearing Co Ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2020-05-19
Anticipated expiration: 2029-09-30

Abstract

A bearing for preventing a race ring belongs to the technical field of mechanical transmission. Prevent bearing of race, including bearing inner race, holder, rolling element and shield, bearing inner race and the coaxial setting of bearing inner race, bearing inner race correspond on the relative surface with the bearing inner race and seted up flutedly, the holder is arranged in between bearing inner race and the bearing inner race, the rolling element passes through the holder to be installed in the recess of bearing inner race and bearing inner race, bearing inner race and holder free rotation can be relative to the rolling element, the shield is arranged in between the bearing inner race and the bearing inner race of bearing both ends face, is the ring form, the keyway has been seted up along the axial of bearing on the internal surface of bearing inner race. Prevent running the bearing of circle, seted up the keyway at the bearing inner race to can strengthen the cooperation of bearing and axle through the key connection when bearing inner race and axle assembly, can effectively prevent to lead to the bearing to run the emergence of the inner race condition because of the magnitude of interference is not enough.

Description

Bearing capable of preventing ring from running

Technical Field

The utility model belongs to the technical field of mechanical transmission, especially, relate to a prevent bearing of race circle.

Background

The bearing is an important part in the modern mechanical equipment, and the main functions of the bearing are to support a mechanical rotating body and keep the center position of a shaft fixed, reduce the friction coefficient of the bearing in the motion process and ensure the rotation precision. However, in the process of assembling the bearing and the shaft, interference of the fit between the shaft and the bearing inner ring is insufficient due to the problem of the design or the machining precision of the shaft, so that after the bearing and the shaft are used for a certain time in operation, the friction force between the bearing inner ring and the matched shaft is insufficient, and the condition that the bearing runs out of the inner ring is caused.

Disclosure of Invention

To the problem that prior art exists, the utility model provides a prevent bearing of race circle.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a prevent bearing of race, includes bearing inner race, holder, rolling element and shield, bearing inner race and the coaxial setting of bearing inner race, bearing inner race correspond on the surface relatively with the bearing inner race and seted up flutedly, the holder is arranged in between bearing inner race and the bearing inner race, the rolling element passes through the holder to be installed in the recess of bearing inner race and bearing inner race, bearing inner race and holder free rotation can be relative to the rolling element, the shield is arranged in between the bearing inner race and the bearing inner race of bearing both ends face, is the ring form, its characterized in that, the keyway has been seted up along the axial of bearing on the internal surface of bearing inner race.

The key grooves are symmetrically arranged on the bearing inner ring.

The utility model has the advantages that:

the utility model provides a prevent bearing of race circle, this bearing has seted up the keyway at the bearing inner race to can strengthen the cooperation of bearing and axle through the key connection when bearing inner race and axle assembly, can effectively prevent to lead to the bearing to run the emergence of the inner race condition because of the magnitude of interference is not enough.

Drawings

FIG. 1 is a cross-sectional view of the anti-race bearing of the present invention;

FIG. 2 is a front view of the anti-race bearing of the present invention;

in the figure: 1-bearing outer ring, 2-bearing inner ring, 3-retainer, 4-rolling body, 5-dust cap, 6-keyway.

Detailed Description

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

As shown in figures 1 and 2, the bearing for preventing the race belongs to the technical field of mechanical transmission, and can effectively prevent the condition that the bearing race is caused by insufficient interference.

The utility model discloses a prevent bearing of race ring, including bearing inner race 1, bearing inner race 2, holder 3, rolling element 4 and shield 5, bearing inner race 1 and the coaxial setting of bearing inner race 2, bearing inner race 1 corresponds on the surface with bearing inner race 2 relatively and has seted up flutedly, holder 3 is arranged in between bearing inner race 1 and the bearing inner race 2, rolling element 4 is installed in the recess of bearing inner race 1 and bearing inner race 2 through holder 3, rolling element 4 bearing inner race 1 relatively, bearing inner race 2 and holder 3 free rotation, rolling element 4 makes and realizes replacing sliding friction by rolling friction between bearing inner race 1 and the bearing inner race 2. The dustproof cover 5 is arranged between the bearing outer ring 1 and the bearing inner ring 2 on two end faces of the bearing and is in a ring shape, the dustproof cover 5 can effectively prevent external dust and sundries from entering the bearing, the service life of the bearing is prolonged, and meanwhile, the phenomenon that the bearing throws away grease injected into the bearing due to the action of centrifugal force in the high-speed operation process can be avoided. The key groove 6 is formed in the inner surface of the bearing inner ring 2 along the axial direction of the bearing, and when the bearing is assembled with a shaft, the key groove 6 can be connected through a key to enhance the matching of the bearing and the shaft, so that the condition that the bearing runs out of the inner ring due to insufficient interference is effectively prevented.

The key grooves 6 are symmetrically arranged on the bearing inner ring 2, so that the bearing inner ring 2 is uniformly stressed, and the service life is prolonged.

The principle process of the present invention will be described with reference to the accompanying drawings.

The assembly of the bearing and the shaft adopts hot assembly as the assembly of a common bearing, and the only difference is that a key needs to be placed in the key slot 6 in the assembly process, so that a key is added between the bearing and the shaft for connection.

In the normal working process, when the friction force between the bearing inner ring 2 and the shaft is enough to maintain the operation, the interference fit between the bearing inner ring 2 and the shaft is still taken as the leading factor, and the key connection does not work; when the friction force between the bearing inner ring 2 and the shaft is not enough to maintain the normal operation of the inner ring 2 and the failure is about to result, the key connection is switched to be the leading key connection, and the bearing inner ring rotates along with the shaft through the key connection, so that the condition that the bearing runs out of the inner ring is avoided, namely, the double guarantee is realized.

Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. The utility model provides a prevent bearing of race, includes bearing inner race, holder, rolling element and shield, bearing inner race and the coaxial setting of bearing inner race, bearing inner race correspond on the surface relatively with the bearing inner race and seted up flutedly, the holder is arranged in between bearing inner race and the bearing inner race, the rolling element passes through the holder to be installed in the recess of bearing inner race and bearing inner race, bearing inner race and holder free rotation can be relative to the rolling element, the shield is arranged in between the bearing inner race and the bearing inner race of bearing both ends face, is the ring form, its characterized in that, the keyway has been seted up along the axial of bearing on the internal surface of bearing inner race.

2. The anti-race bearing according to claim 1, characterized in that: the key grooves are symmetrically arranged on the bearing inner ring.