CN2231342Y

CN2231342Y - Double rolling body bearing

Info

Publication number: CN2231342Y
Application number: CN 95244843
Authority: CN
Inventors: 徐寿泉; 张一帆; 郑崇藩
Original assignee: YUFENG MOTOR CO Ltd FUZHOU
Current assignee: YUFENG MOTOR CO Ltd FUZHOU
Priority date: 1995-10-09
Filing date: 1995-10-09
Publication date: 1996-07-17
Anticipated expiration: 2005-10-09

Abstract

The utility model relates to a novel rolling bearing composed of an outer ring 1, an inner ring 4, a plurality of rolling bodies 2 and a rolling needle 3. The rolling needle 3 positioned between the adjacent rolling bodies 2 replaces a cage in an original rolling bearing. The advantages of the original rolling bearing are kept, and besides, the defects of big friction force and the over fast abrasion of the cage are overcome. Therefore, the performance indexes of the whole bearing, such as temperature rise, noise, vibration, etc., are improved. The service life is prolonged.

Description

Two rolling body bearings

The utility model relates to a kind of new-type rolling bearing, belongs to the technical field of bearings in the machine-building.

Existing rolling bearing generally is made up of four parts: outer ring, inner ring, rolling element and retainer.Wherein, retainer plays the effect of separation roller.But when bearing operation, what produce between retainer and the rolling element is sliding friction, and the wearing and tearing of retainer and rolling element are very big, and the surface friction drag of bearing is big, thereby rotating speed is restricted, and temperature rise is too high, noise is excessive, vibration is big.

The purpose of this utility model overcomes the deficiencies in the prior art exactly, and a kind of novel rolling bearing is provided, and it has replaced retainer with the needle roller that is placed between the former rolling element, and it is big to have overcome bearing drag, easily the defective of damaging.

In order to achieve the above object, the solution of the utility model employing is: rolling bearing is made up of outer ring, inner ring, some rolling elements and needle roller.Wherein, needle roller is thin cylindrical body, and each needle roller is positioned between two rolling elements that are adjacent, and is interference fit between it and the adjacent rolling element, and is tangent mutually.When bearing operation, needle roller is consistent in the linear velocity of points of tangency with rolling element, promptly has only rolling friction therebetween and fricton-tight friction.The bearing outer ring end face has one to connect cell body to center of circle extended spot, and its inner face respectively has a groove up and down, and the cylindrical two ends of needle roller are limited in motion in this groove, therebetween for movingly.During bearing operation, needle roller and rolling element are promptly formed " two rolling element ", along the outer ring and connect the predetermined track of cell body and make circular movement.

The utility model has both kept the advantage of original rolling bearing owing to adopted needle roller to cooperate with rolling element, and it is big to have overcome frictional force again, the defective of retainer rapid wear; Thereby improved the performance index of the aspect such as temperature rise, noise, vibration of whole bearing, prolonged working life.

Fig. 1 is the end elevation of the utility model double rolling bearing.

Fig. 2 is the sectional view of rolling bearing shown in Figure 1 along A-A line.

The utility model is described in further detail below in conjunction with drawings and Examples.Fig. 1 is the end elevation of the utility model double rolling bearing.This rolling bearing is made up of outer ring 1, inner ring 4, some rolling elements 2 and needle roller 3.Rolling element 2 is rollers of cylindrical shape, also spherical ball, and needle roller 3 is more elongated cylindrical bodys, it is positioned between two rolling elements 2 that are adjacent, and is interference fit between needle roller 3 and the rolling element 2, and is tangent mutually.The end face of bearing outer ring 1 has one to connect cell body 5 to center of circle extended spot, and its inner face respectively has a groove 6 up and down, as shown in Figure 2.The two ends of needle roller 3 promptly are limited in motion in this groove 6, therebetween for movingly.Resistance when moving in groove 6 for reducing needle roller 3, needle roller 3 both ends of the surface are processed into the arc surface of dimpling.

Claims

1, a kind of rolling bearing, form by outer ring, inner ring and some rolling elements, it is characterized in that: laying the needle roller (3) of an elongate cylindrical shape between per two adjacent rolling elements (2), is interference fit between needle roller (3) and the rolling element (2), tangent mutually.

2, rolling bearing according to claim 1, it is characterized in that: the end face of this bearing outer ring (1) has one to connect cell body (5) to center of circle extended spot, its inner face respectively has a groove (6) up and down, and the two ends of needle roller (3) are limited in motion in this groove (6), therebetween for movingly.