CN2042527U

CN2042527U - Safety bearing for railway heavy-duty high-speed train

Info

Publication number: CN2042527U
Application number: CN 88213040
Authority: CN
Inventors: 马崇年
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-09-09
Filing date: 1988-09-09
Publication date: 1989-08-09

Abstract

The utility model provides a safety bearing applied to a railway heavy-duty high-speed train which is mainly composed of an outer ring, a layer of middle sleeve, a layer of inner ring, two layers of roll balls and two holding frames. The utility model forms a structure of centripetal short cylinder roll balls with double layers. The double layers of roll balls rotate in the actual using process, once the roll balls of the inner layer (or the outer layer) crack, a suit of roll ball system of the outer layer (or the inner layer) can undertake all the rotation work.

Description

Safety bearing for railway heavy-duty high-speed train

The utility model relates to the bearing that a kind of railway vehicle is used.

China railways passenger vehicle and part lorry are in order to improve transport capacity at present, and forward high speed, heavy duty and long and big train direction develop.And the employed bearing of passenger vehicle and lorry is the single-row centripetal cylindrical roller bearing.This bearing is in operation and causes combustion axle, breaking axis more because of bearing fault.For example ball is cracked, ball and raceway metal fatigue peel off, the axle sleeve fracture, and phenomenons such as retainer fracture make the ball of bearing stuck after taking place, and rotate malfunctioningly, cause combustion spool, the generation of breaking axis, serious threat traffic safety.

The purpose of this utility model is by after the transformation bearing structure, makes its turn(a)round that can use regulation, and the bearing that can more renew in maintenance process is to reach the purpose of safe driving.

The utility model mainly is made up of ball, outer ring, inner ring and retainer.Its structure characteristic is to be basic part with the bearing that present railway vehicle is used, and its outer ring is transformed into interior coil structures, and a circle ball is set on its outside again, and a retainer and an outer ring form entad short cylindrical roll structure of bilayer.

Below in conjunction with accompanying drawing structure characteristic of the present utility model is further specified:

Fig. 1 is a structural representation of the present utility model.Fig. 2 is a cross-sectional view of the present utility model.Wherein: (1) outer ring; (2) centre circle; (3) outer retainer; (4) outer ball; (5) internal layer ball; (6) interior retainer; (7) inner ring.

Implementation method of the present utility model is fairly simple, and use therein inner ring (7), interior retainer (6), internal layer ball (5), outer ball (4) are identical with the bearing arrangement that present rolling stock is used. The bearing arrangement that the structure of outer ring (1), centre circle (2) and outer retainer (4) and present rolling stock are used is also identical, and just size is different.

Side outside the bearing outer ring in using at present is transformed into the shape (its inboard shape invariance) of inner ring raceway face in order to bear force of rolling friction, impulsive force and the pressure of outer ring ball. All there is raceway in the outside, bears the both sides abrasion in the centre circle, and its design thickness is slightly larger than inner ring (or outer ring) thickness. The centre circle outside is installed a circle ball, a retainer and an outer ring again. This ball retainer and outer loop-shaped are identical with existing bearing in use, form double-deck centripetal cone cylinder ball bearing structure.

The bearing of this architectural feature is that double layers of rolling balls is rotating in running, and relative particle displacement slows down in the bearing, and bearing position disperses, and impact strength is weakened. In case gravity takes place to be impacted, being out of shape a big circle ball resistance to rolling increases, then can be rotated by another layer ball and regulate, slowed down metal fatigue speed, slow down axle sleeve and peeled off with the exertin card and sting, therefore can avoid ball cracked service life that prolongs bearing, guaranteed security of operation, after reaching turn(a)round, replaceable new bearing prevents from breaking down midway.

In case in use the ball of internal layer (or outer) is cracked in addition, and raceway is peeled off, ball is stuck, and then one of outer (or internal layer) cover rolling system has born whole rotation works, guarantees that train continues safe operation.

The utility model mainly is the employed safety bearing of Heavy-Haul Railway bullet train.

Claims

1, a kind of Heavy-Haul Railway bullet train safety bearing, mainly form by ball, outer ring, interior cover and retainer, it is characterized in that the bearing of using with present railway vehicle is a basic part, side outside the bearing outer ring in using at present is transformed into the shape (its inboard shape invariance) of inner ring raceway face so that bear force of rolling friction, impact force and the pressure of outer ring ball.All there is raceway in the outside, bears the both sides abrasion in the centre circle, and its design thickness is slightly larger than inner ring (or outer ring) thickness, and a circle ball is installed in the centre circle outside again, a retainer and an outer ring, and the bearing during this ball retainer reaches outer loop-shaped and uses now is identical.Form bilayer and entad bore the cylinder ball bearing structure.