CN201125954Y

CN201125954Y - N series bearing double retaining ring composite cage

Info

Publication number: CN201125954Y
Application number: CNU200720043756XU
Authority: CN
Inventors: 徐国利
Original assignee: CHANGZHOU LIWEINUOTE BEARING PRODUCTS Co Ltd
Current assignee: CHANGZHOU LIWEINUOTE BEARING PRODUCTS Co Ltd
Priority date: 2007-11-05
Filing date: 2007-11-05
Publication date: 2008-10-01
Anticipated expiration: 2017-11-05

Abstract

The invention relates to a mechanical device, especially to a bearing combination holding frame, which points to the problems of prior art that useful life is short due to bad strength of bearing retainer check ring, bad impact resistant capacity of rivet head joint, bad lubricating effect of bearing and easy-generated early fatigue. The provided N kinds of bearing double-check ring combination holding frame comprises two same check rings and a holding frame support, rivet head pores, which is oblate, are evenly distributed on the check rings, the holding frame support is column structure, flat columned rivet heads are equipped on end surface of the support, contact surface of the support and bearing rollers is concave surface with groove, a lubricating groove and a oil-filling groove, which are crossed, are arranged on contact surface of the support and the rollers.

Description

A kind of N class bearing double block ring combination retainer

Technical field

The utility model relates to a kind of mechanical device, especially a kind of bearing composite cage.

Background technique

Bearing is the mechanical parts of supporting axle rotation, and the retainer in the bearing is the back-up roller kinetoplast, makes it evenly to distribute in the bearing circumferential direction inside stressed uniform basis.Rolling element is that the retainer of the bearing of cylindrical roller is a N class bearing double block ring combination retainer, and the N class bearing is widely used in mechanical facilities such as diesel engine, motor, automobile gearbox, rolling mill.At present two back-up ring retainers of using of this class bearing exist heat dispersion slowly, problem such as poor lubrication, friction factor be big, bearing is in running, often lubricating grease is excessive to burn out a bearing owing to the inner generation of friction high temperature makes, cause bearing to be scrapped, cause bearing short working life, change frequent.

Having announced a kind of N class bearing composite cage among the patent No. ZL2004200098595.0, is to be combined into by two mutually homeothrausmatic back-up rings and pillar.Be respectively lubrication groove in the middle of two sides that have heat radiation oil hole, pillar to contact in the middle of the adjacent pillar hole on back-up ring, the oil groove of adding is arranged on pillar with roller.But this bearing has been opened the heat radiation oil hole on back-up ring, makes the intensity of back-up ring reduce greatly; Refuel to bearing at the heat radiation tank filler sleeve, play lubrication effect can only for the end face of roller, can't satisfy the lubricated needs of working surface, make bearing produce the early fatigue phenomenon easily; Because the die of retainer is a square structure, die and Body of pillar junction point form area of stress concentration, and the corner of back-up ring square hole forms area of stress concentration equally, and the impact resistance when work is poor, and fracture appears in area of stress concentration easily.

Summary of the invention

The technical problems to be solved in the utility model is: the back-up ring intensity difference of existing retainer, the not good easy generation early fatigue of die junction point anti-impact force difference and lubrication effect cause short problem in working life.

The technological scheme that its technical problem that solves the utility model adopts is: a kind of N class bearing double block ring combination retainer is made up of two identical back-up rings and retainer, on back-up ring, be uniform-distribution with the die hole, the die hole is oblate, cage pin is a column structure, oblate cylindricality die is arranged on the end face of pillar, oblate die and die hole cooperate, the problem that oblate cavernous structure can avoid stress to concentrate fully, and can be effectively die collides back-up ring during with running impact force be distributed to a plurality of directions, thereby increased the anti-impact force of back-up ring, the surface that surface that pillar and bearing outer ring act on mutually and pillar and bearing inner race act on mutually all is the indent arcuate surface, and indent arc surface structure makes pillar have certain oil storage capacity on these two surfaces; The contacted surface of pillar and bearing roller is an indent arcuate surface with groove, the lip-deep groove that pillar contacts with roller has two kinds, a kind of is the lubrication groove that intersects with end face, another kind is the oil groove that adds that is parallel to end face, adding oil groove and lubrication groove intersects, add oil groove and will be stored in lubricant oil on the adjacently situated surfaces and guide to lubrication groove roller is lubricated, it is enough lubricated that roller is obtained.

In the utility model on the end face of pillar the main body of die and pillar ledge structure is arranged, be used for matching with rib inside and outside the bearing, play Global Macros to bearing, prolong the working life of bearing.

The beneficial effects of the utility model are: the oil reserve of the arcuate surface of the pillar of the present utility model design crossing can increasing bearing with adding oil groove and lubrication groove, and make bearing roller obtain enough lubricating, reduce the generation of bearing heating annealing phenomenon; The utility model oil hole that do not dispel the heat on back-up ring has improved the intensity of back-up ring greatly, and round structure is adopted in die and die hole, can improve the anti-impact force of bearing, can increase the service life greatly.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the A-A sectional drawing of Fig. 1;

Fig. 3 is the structural representation of the utility model back-up ring;

Fig. 4 is the B-B sectional drawing of Fig. 3;

Fig. 5 is the structural representation of pillar of the present utility model;

Fig. 6 is the plan view of pillar of the present utility model;

Fig. 7 is the left view of the utility model pillar.

Embodiment

As shown in the figure, on back-up ring 1, be evenly distributed with circular die hole 2, die 4 corresponding matching on die hole 2 and pillar 3 end faces, oblate die 4 and die hole 2 cooperate, oblate cavernous structure can be effectively die 4 collides back-up rings 1 during with running impact force be distributed to a plurality of directions, thereby increased the anti-impact force of back-up ring 1, die 4 has ledge structure 7 with the main body of pillar 3 on the end face of pillar 3, pillar 3 is column structures, pillar 3 all is the indent arcuate surface with surface 8 and pillar 3 that bearing outer ring acts on mutually with the surface 9 that bearing inner race acts on mutually, and indent arc surface structure makes pillar 3 have certain oil storage capacity on these two surfaces.Pillar 3 is an indent arcuate surface with groove with the contacted surface of bearing roller, the lip-deep groove that pillar 3 contacts with roller has two kinds, a kind of is the lubrication groove 5 that intersects with end face, another kind be parallel to end face add oil groove 6, add oil groove and lubrication groove and intersect, add oil groove and will be stored in lubricant oil on the adjacently situated surfaces and guide to lubrication groove roller is lubricated.

Claims

1. a N class bearing double block ring combination retainer is made up of two mutually homeothrausmatic back-up rings and pillar, and it is characterized in that: the die on the cage pin end face is oblate columniation structure, and the die hole is oblate on the back-up ring; Cage pin is a column structure, the surface that surface that pillar and bearing outer ring act on mutually and pillar and bearing inner race act on mutually all is the indent arcuate surface, the contacted surface of pillar and bearing roller is the indent arcuate surface with groove, and groove and adjacent arcuate surface intersect.

2. a kind of N class bearing double block ring combination retainer according to claim 1, it is characterized in that: the main body of die and pillar has ledge structure on the end face of pillar.

3. a kind of N class bearing double block ring combination retainer according to claim 1, it is characterized in that: the lip-deep groove that pillar contacts with roller has two kinds, and a kind of is the lubrication groove that intersects with end face, and another kind is the oil groove that adds that is parallel to end face.

4. a kind of N class bearing double block ring combination retainer according to claim 2 is characterized in that: add oil groove and lubrication groove and intersect.