CN2120913U

CN2120913U - Thrust core adjustable roller bearing

Info

Publication number: CN2120913U
Application number: CN92207613U
Authority: CN
Inventors: 郭新三; 刘伟齐
Original assignee: WAFANGDIAN BEARING FACTORY
Current assignee: WAFANGDIAN BEARING FACTORY
Priority date: 1992-04-17
Filing date: 1992-04-17
Publication date: 1992-11-04

Abstract

The utility model relates to a thrust core-adjusting roller bearing, which comprises a seat ring, a shaft ring, asymmetric rollers and a solid retainer, but without a lining. The function of supporting the rollers of the lining is completed by using a guard edge formed at the bottom of the shaft ring or a spring ring embedded on the side surface of the bottom of the shaft ring as a guard head. The utility model has the advantages of simple processing and assembly technology and high and reliable operation performance.

Description

Thrust core adjustable roller bearing

The utility model relates to a kind of self-aligning thrust roller bearing, and it comprises seat ring, blowout patche, asymmetric roller and solid cage.

Self-aligning thrust roller bearing of the prior art (asymmetric roller-type structure), being called 29000 profile shafts in the world holds, be called 9039000 types in China, adopt 9039000 types of solid cage, its structure is made up of seat ring 01, blowout patche 02, roller 04, lining 05, retainer 06 5 major parts as shown in Figure 1.This kind bearing owing to the rationality of its structure have the axial load capacity big, easily aligning, when bearing axial load, can bear advantages such as a certain amount of radial load, running be steady.It is extensively admitted and is developed rapidly in the world at present.

Yet above-mentioned 9039000 type self-aligning thrust roller bearing structures of the prior art are not to use up people's will fully yet.With reference to Fig. 1: lining 05 is to be articulated on the groove 2 of blowout patche 02 as a separate piece, the effect of lining 05 be with angled end-face hold roller 04 small end face 1, make that roller is unlikely to come off.The structure of this belt material cover 05 exists following point:

1. lining 05 is a thin-walled car spare, and difficulty of processing is big, and manufacturing efficiency is low;

2. lining 05 is through being suspended on the blowout patche 02 after the roll extrusion, its often occur because of the roll extrusion poor quality from the phenomenon that blowout patche comes off, influenced the normal use of bearing;

3. lining 05 is movingly with axle, has reduced the cooperate area of blowout patche with axle like this, easily makes between axle and the blowout patche and produces slide relative, causes hot box.

The purpose of the utility model is: prior art is done one improve, provide a kind of and not only can still have its original advantage, but also can overcome the self-aligning thrust roller bearing of the disadvantage of bush structure.

The utility model is that lining of the prior art is removed, and to the change of blowout patche structure, make it to finish the effect of lining idler pulley.Concrete two implementations are as follows:

One, the same with prior art, also comprise seat ring, blowout patche, asymmetric roller and solid cage, different is: do not have lining; The cylndrical surface that blowout patche matches with axle extends to downwards vertically continuously with the blowout patche lower end surface intersects, and the blowout patche lower end surface is to one section of roller small end face below extension and form its rib structure.

Two, the same with prior art, also comprise seat ring, blowout patche, asymmetric roller and solid cage, different is: do not have lining; The cylndrical surface that blowout patche matches with axle extends to downwards vertically continuously with the blowout patche lower end surface intersects, the contacted cambered surface of blowout patche and roller also prolongs, surpasses the small end face of roller downwards and intersects with the blowout patche lower end surface, has a retaining spring ring that is equipped with in caulking groove, the groove roller small end face on surpassing that section blowout patche cambered surface of roller small end face.

In the above-mentioned two kinds of schemes of the utility model, all be to guarantee to have prolonged the axial dimension of blowout patche under the bearing general shape size constancy prerequisite, the size that is prolonged is equivalent to the thickness of lining lower end in the prior art.

The utility model has the advantages that:

1. cancelled lining, adorned spring ring work retaining head with the blowout patche formed rib in bottom or in the blowout patche bottom and hold roller, this can make processing, mounting process simplify and can guarantee that the bearing usability is reliable.

2. replace this structure of lining with blowout patche bottom rib, the cambered surface of blowout patche is slightly prolonged, rolling body can slightly be prolonged like this, thereby bearing dynamic load rating Ca has been improved about 1%, corresponding raising 3% of rating life.

3. owing to extended blowout patche and the cylndrical surface that axle matches continuously, axle and blowout patche length of thread engagement are increased so limit speed has improved 3～7%, axial stiffness raising 2～4%.

Fig. 1 is 9039000 type self-aligning thrust roller bearing structural profile schematic representation in the prior art.

Fig. 2 is the utility model scheme one structural profile schematic representation.

Fig. 3 is the utility model scheme two structural profile schematic representation.

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

By among the figure as can be known, the utility model is same as the prior art, also comprises seat ring 01, blowout patche 02, roller 04, retainer 06, and the correlation of these four big parts is also identical.But in the utility model, there has not been lining 05; The utility model is a small end face 1 of holding roller 04 with the formed rib 4 in blowout patche 02 bottom among Fig. 2, and the utility model is to hold roller small end face 1 with the spring ring 08 that is embedded in the blowout patche 02 bottom cambered surface among Fig. 3; Among Fig. 2,3 blowout patche 02 axial overall dimensions of the present utility model all than prior art among Fig. 1 big, be equivalent to the lower end thickness that blowout patche 02 axial extreme length among Fig. 1 adds lining 05; Be used to articulate the groove 2 of lining 05 among no Fig. 1 on blowout patche 02 among Fig. 2,3 and the axle cylndrical surface of matching, but extend to the lower end surface continuously by its upper-end surface; The cambered surface 3 of blowout patche 02 is than the summary of Fig. 1 long (because of rib structure 4 can make it to prolong), so roller 04 also slightly prolongs thereupon among Fig. 2.

Claims

1, a kind of self-aligning thrust roller bearing, comprise seat ring, blowout patche, asymmetric roller and solid cage, it is characterized in that: the cylndrical surface that blowout patche matches with axle extends to downwards vertically continuously with the blowout patche lower end surface intersects, and the blowout patche lower end surface is to one section of roller small end face below extension and form its rib structure.

2, a kind of self-aligning thrust roller bearing, comprise seat ring, blowout patche, asymmetric roller and solid cage, it is characterized in that: the cylndrical surface that blowout patche matches with axle extends to downwards vertically continuously with the blowout patche lower end surface intersects, the contacted cambered surface of blowout patche and roller also prolongs, surpasses the small end face of roller downwards and intersects with the blowout patche lower end surface, has a retaining spring ring that is equipped with in caulking groove, the groove roller small end face on surpassing that section blowout patche cambered surface of roller small end face.