CN216519170U

CN216519170U - Special retainer-free ball bearing with automatic discrete rolling bodies

Info

Publication number: CN216519170U
Application number: CN202122889987.5U
Authority: CN
Inventors: 赵彦玲; 韩文广
Original assignee: Harbin University of Science and Technology
Current assignee: Harbin University of Science and Technology
Priority date: 2021-11-24
Filing date: 2021-11-24
Publication date: 2022-05-13
Anticipated expiration: 2031-11-24

Abstract

The utility model relates to a special retainer-free ball bearing with automatically discrete rolling bodies, which comprises a bearing outer ring, a bearing inner ring, a speed reducing groove and a rolling body assembly, wherein the rolling body assembly comprises 14 spherical rolling bodies, the 14 spherical rolling bodies are arranged in a track formed by the bearing outer ring and the bearing inner ring and can roll in the track, and the speed reducing groove can play a speed reducing effect on the rolling bodies, so that all the rolling bodies are automatically discrete. The structure size of the bearing is all adopted for 6206 deep groove ball bearings, and on the basis of the 6206 deep groove ball bearings, a speed reduction groove is processed on the outer ring of the bearing while a retainer is removed and 5 rolling elements are added, so that the bearing can be used in a high-speed and heavy-load working environment.

Description

Special retainer-free ball bearing with automatic discrete rolling bodies

Technical Field

The utility model relates to a special retainer-free ball bearing with an automatic discrete rolling body, which is suitable for a high-speed and heavy-load working environment.

Background

The characteristic of the bearingless ball bearing is that the bearingless ball bearing is applied to a plurality of special occasions and becomes a spare bearing of the special bearings. However, when the ball bearing without the retainer is operated, the rolling bodies of the ball bearing often collide, so that the surfaces of the rolling bodies are easy to peel off, thereby increasing the bearing abrasion and finally causing the bearing failure, and therefore, the reduction of the collision of the rolling bodies of the ball bearing without the retainer is a problem which is needed to be solved urgently.

Disclosure of Invention

The utility model provides a special retainer-free ball bearing with automatically discrete rolling bodies, which is improved on the basis of a 6206 deep groove ball bearing, wherein 5 rolling bodies are added while a retainer is removed, and a speed reducing groove is added on a raceway of an outer ring of the bearing, so that the rolling bodies can play a speed reducing effect when passing through the speed reducing groove.

In order to achieve the purpose, the utility model provides a special retainer-free ball bearing with automatically discrete rolling elements, which comprises a bearing inner ring, a bearing outer ring, a speed change groove and rolling element assemblies, wherein each rolling element assembly comprises 14 spherical rolling elements, each rolling element assembly is arranged in a track formed by the bearing inner ring and the bearing outer ring, the speed change groove is machined in the bearing outer ring, the circumferential span angle (taking the center of the bearing outer ring as the circle center) of the speed change groove is 24 degrees, the axial span angle (taking one point on the pitch circle as the circle center) is 41.4 degrees, and the structural sizes of the bearing inner ring, the bearing outer ring and the rolling element assemblies are all adopted in 6206 deep groove ball bearings.

Drawings

The first drawing is the overall structure schematic diagram of a special ball bearing without a retainer, the rolling bodies of which are automatically dispersed.

FIG. two is a schematic view of the angle of the decelerating slot.

FIG. three is a schematic diagram of the discrete process of the rolling bodies in the utility model.

Wherein: 101 bearing outer ring; 201 bearing inner race; 301 a deceleration tank; 401 rolling bodies 14; 402 a rolling body 1; 403 rolling elements 2; 404 rolling body 3.

Detailed Description

In order to further explain the technical scheme of the utility model, the utility model is further explained by combining the attached drawings.

Referring to fig. 1 to 3, a special cage-free ball bearing with automatically discrete rolling elements includes a bearing inner ring, a bearing outer ring, a speed reduction groove, and rolling element assemblies.

The rolling element assembly comprises 14 spherical rolling elements, and the rolling elements are arranged in a track formed by the bearing inner ring and the bearing outer ring and can roll in the track.

A speed reducing groove is machined in the bearing outer ring, the annular span angle of the speed reducing groove is 24 degrees, and the axial span angle is 41.4 degrees.

The structural sizes of the bearing inner ring, the bearing outer ring and the rolling element assembly are all used for 6206 deep groove ball bearings.

Discrete process: the bearing outer ring with the speed reduction groove part is placed right below and fixed, when the bearing inner ring does not rotate, a gap larger than the size of one rolling body exists between the rolling body 1 and the rolling body 14 under the action of gravity, and other rolling bodies are in close contact. When the last rolling element 1 passes through a deceleration groove, the rolling element 1 is changed from one-point contact to two-point contact, so that the speed is reduced, the interval between the rolling element 1 and the rolling element 14 is reduced but not contacted, and the speed of the rolling element 1 is smaller than that of the rolling element 2, so that the rolling element 1 and the rolling element 2 are changed from close contact to separation, and the rolling element 1 is respectively separated from the rolling element 2 and the rolling element 14; when the rolling body 2 passes through the speed reduction groove, the rolling body 2 is changed from one-point contact to two-point contact, so that the speed is reduced, but the rolling body 2 is not in contact with the rolling body 1, so that the rolling body 2 has intervals between the rolling body 3 and the rolling body 1, and when the intervals exist between all the rolling bodies, the automatic dispersion effect is realized.

Claims

1. The utility model provides a special no cage ball bearing of automatic discrete of rolling element, includes bearing inner race, rolling element subassembly and deceleration groove, its characterized in that: the rolling element assembly comprises 14 spherical rolling elements, the 14 spherical rolling elements are arranged in a track formed by the bearing outer ring (101) and the bearing inner ring (201), the speed reduction groove (301) is processed on the bearing outer ring (101), when the rolling elements pass through the speed reduction groove (301), the contact point of the rolling elements is changed from one-point contact to two-point contact, the rolling speed of the rolling elements can be reduced, the circumferential angle of the speed reduction groove (301) is 24 degrees, and the axial angle is 41.4 degrees.