CN2440130Y

CN2440130Y - Double rolling bearing

Info

Publication number: CN2440130Y
Application number: CN 00249329
Authority: CN
Inventors: 郑敏藩; 张一帆; 郑崇藩; 程国平
Original assignee: YUFENG MOTOR CO Ltd FUZHOU
Current assignee: YUFENG MOTOR CO Ltd FUZHOU
Priority date: 2000-09-21
Filing date: 2000-09-21
Publication date: 2001-07-25
Anticipated expiration: 2010-09-21

Abstract

The utility model relates to a double rolling bearing composed of an outer ring, a plurality of rolling bodies, a plurality of rolling needles and an inner ring, wherein, the rolling bodies are cylinder-shaped rollers, or cone-shaped rollers, or spherical rolling balls; the rolling needles can be cylinder-shaped or cone-shaped; each rolling needle is arranged between two adjacent rolling bodies, the rolling needle and the adjacent rolling bodies are mutually tangential. The utility model improves the performance indexes of the temperature rising, noise, vibration, etc. of the whole bearing, and extends the service life of the bearing.

Description

Two rolling body bearings

The utility model relates to a kind of bearing, and particularly a kind of pair of rolling body bearing belongs to the bearing class field 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, still, and when bearing operation, what produce between retainer and the rolling element is sliding friction, 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, temperature rise is too high, the life of making an uproar is excessive, and bearing is short working life.

The purpose of this utility model overcomes the deficiencies in the prior art exactly, and a kind of pair of rolling body 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 technical solution adopted in the utility model is: be made up of outer ring, some rolling elements, some needle rollers and inner ring, wherein, rolling element is the roller of cylindrical body or cone shape, it also can be spherical ball, needle roller can be cone or cylindrical body, is arranged between two rolling elements that are adjacent, and is tangent mutually between it and the adjacent rolling element.When bearing operation, needle roller is consistent in the linear velocity of points of tangency with rolling element, has only rolling friction and fricton-tight friction during promptly.The bearing outer ring end face has one to connect cell body to center of circle extended spot, or be provided with to the extended spot that deviates from center of circle direction at the inner ring end face and connect cell body, if the outer ring size shape is definite, then the end face of inner ring extends to the direction that deviates from the center of circle, its inner face respectively has a groove up and down, the two ends of needle roller cylindrical body or cone are limited in motion in this groove, therebetween for movingly.During bearing operation, needle roller and rolling element are promptly formed two rolling elements, along the outer ring and connect the track that cell body moves and make circular movement.

The utility model is owing to adopted needle roller to cooperate with rolling element, the advantage that had both kept original rolling bearing, 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 the working life of bearing greatly.

Below in conjunction with accompanying drawing the utility model is further specified:

Fig. 1 is the utility model structural representation

Fig. 2 is the cross-sectional schematic of the utility model along the A-A line

As shown in Figure 1 and Figure 2, the utility model mainly is made up of outer ring (1), some rolling elements (2), some needle rollers (3) and inner ring (4), rolling element (2) is the roller of cylindrical body or cone shape, also spherical ball, needle roller (3) is elongated cone or cylindrical body, be arranged between two rolling elements (2) that are adjacent, tangent mutually between needle roller (3) and the rolling element (2).The end face of bearing outer ring (1) has one to connect cell body (5) to center of circle extended spot, or be provided with to the extended spot that deviates from center of circle direction at inner ring 4 end faces and connect cell body (5), if outer ring (1) size shape is definite, then the end face of inner ring promptly extends to the direction that deviates from the center of circle, its inner face respectively has a groove (6) up and down, 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 the arc surface of dimpling.

Claims

1. two rolling body bearing, form by outer ring (1), some rolling elements (2), some needle rollers (3) and inner ring (4), it is characterized in that rolling element (2) is the roller of cylindrical body or cone shape, also spherical ball, needle roller (3) is elongated cone or cylindrical body, be arranged between two rolling elements (2) that are adjacent, tangent mutually between needle roller (3) and the rolling element (2).

2, this pair of rolling body bearing according to claim 1, its feature is that also the end face of bearing outer ring (1) has one to connect cell body (5) to center of circle extended spot, or be provided with to the extended spot that deviates from center of circle direction at inner ring 4 end faces and connect cell body (5), if outer ring (1) size shape is definite, then the end face of inner ring promptly extends to the direction that deviates from the center of circle, its inner face respectively has a groove (6) up and down, and the two ends of needle roller (3) promptly are limited in motion in this groove (6), therebetween for movingly.

3, this pair of rolling body bearing according to claim 1, its feature are that also needle roller (3) both ends of the surface are the arc surface of dimpling.