CN201475166U

CN201475166U - Spherical bearing

Info

Publication number: CN201475166U
Application number: CN2009202343814U
Authority: CN
Inventors: 鲍春光; 罗石鸿; 郑剑云
Original assignee: CHANGZHOU TECH-MARK INDUSTRIAL Co Ltd; CRRC Qishuyan Institute Co Ltd
Current assignee: CRRC Qishuyan Institute Co Ltd; CRRC Changzhou Tech Mark Industrial Co Ltd
Priority date: 2009-07-29
Filing date: 2009-07-29
Publication date: 2010-05-19
Anticipated expiration: 2019-07-29

Abstract

The utility model belongs to the technical field of bearings, and particularly relates to a spherical bearing applied to a train braking device. The spherical bearing is provided with an inner ring and an outer ring, wherein an inner lining is arranged in the inner ring through interference fit, both ends of the inner lining are fixed through a retaining ring, a retaining frame is arranged between the inner ring and the outer ring, the retaining frame is fixedly arranged on the outer ring, and the inner ring and the retaining frame are movably connected. The utility model has the advantages that the friction resistant performance of the bearing is improved; gaps among the inner and outer rings and the plastic retaining frame are reduced, so the spherical bearing has better shockproof performance; the plastic retaining frame is made of a special material, has light weight and can provide high rigidity; the frictional wear between the plastic retaining frame and the inner ring is reduced, so the spherical bearing has excellent self-lubricating characteristic; and the distortion of the retaining frame is greatly reduced when in bearing.

Description

Spherical bearing

Technical field

The utility model belongs to field of bearings, particularly a kind of spherical bearing that is applied to train braking device.

Background technique

Along with improving constantly of domestic train running speed, the vibration that produces during train operation is more and more violent, braking force of train is increasing, this bearing radial gap that just requires to be used for train braking device is little, can adapt to dither, provide protection to prevent that axle from excessively wearing away when vibrating to axle, and bigger load-carrying ability and rigidity can be provided; Because agent structure skew and the swing certain along with wheel has of braking device, radial clearance is big between general bearing enclose, friction is big, can not swing freely when carrying.

Summary of the invention

The shortcoming that the utility model is big at above-mentioned technology middle (center) bearing Internal and external cycle radial clearance, friction is big proposes the spherical bearing that a kind of radial clearance is little, friction is little.

The realization the technical solution of the utility model is as follows:

Spherical bearing, it has inner ring and outer ring, and interference fit has neck bush in the inner ring, and the two ends of neck bush are fixed by back-up ring, are provided with retainer between inner ring and the outer ring, and retainer is fixedly installed on the outer ring, and inner ring connects with retainer is movable.

Described retainer is a plastic cage.

Adopted such scheme, be provided with retainer between spherical bearing inner ring and the outer ring, retainer is fixed on the outer ring, inner ring can be done freely on plastic cage and rotate, gap and friction between the Internal and external cycle have been reduced, the spherical bearing neck bush is a powdered metallurgical material, has good friction and wear behavior, the axle excessive wear that can prevent to match, plastic cage is by between the mold pressing Internal and external cycle, has reduced the gap between Internal and external cycle and the plastic cage, has better vibrationproof performance, plastic cage adopts special material to make, quality is light, and high rigidity can be provided, and reduces the fretting wear between plastic cage and the inner ring, superior self-lubricating property is arranged, reduce the distortion of retainer when carrying significantly.

Description of drawings

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

Among the figure, 1, the spherical bearing inner ring, 2, the spherical bearing neck bush, 3, the spherical bearing outer ring, 4, plastic cage, 5, back-up ring.

Embodiment

As shown in Figure 1, a kind of structural type of spherical bearing, it is made up of following critical piece: spherical bearing inner ring 1, spherical bearing neck bush 2, spherical bearing outer ring 3, plastic cage 4, back-up ring 5 are formed.2 interference of spherical bearing neck bush press fit in the spherical bearing inner ring 1, and two ends are fixed in the spherical bearing inner ring 1 by back-up ring 5.Plastic cage 4 between spherical bearing inner ring 1 and the outer ring 3 is by mold pressing the resinae polymer to be sneaked between the Internal and external cycle, and plastic cage 4 and outer ring 3 are consolidated, and inner ring 1 can freely rotate in plastic cage 4.In braking process, the axle in the bearing can be free to slide in bearing vertically, and axle follows spherical bearing inner ring 1 freely to rotate in plastic cage 4.

Claims

1. spherical bearing, it has inner ring and outer ring, and interference fit has neck bush in the inner ring, the two ends of neck bush are fixed by back-up ring, it is characterized in that: be provided with retainer between inner ring and the outer ring, retainer is fixedly installed on the outer ring, and inner ring connects with retainer is movable.

2. spherical bearing according to claim 1 is characterized in that: described retainer is a plastic cage.