CN2597158Y

CN2597158Y - Internal withdrawing device for small bearing

Info

Publication number: CN2597158Y
Application number: CNU032023537U
Authority: CN
Inventors: 马维福
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-01-02
Filing date: 2003-01-02
Publication date: 2004-01-07
Anticipated expiration: 2013-01-02

Abstract

The utility model provides a dismantling puller for dismantling mechanical part and bearing and is mainly used to pull the inner ring of the part or the bearing. The utility model is characterized in that the puller has a siamesed nut flexible camber externally-pulling claw, a screw rod matching with the nut flexible camber externally-pulling claw and a three-claw or four-claw camber case pulling claw for the bearing outer ring when the frame is dismantled. When in dismantling operation, a spanner is used to fix the nut flexible camber externally-pulling claw, a rotary screw rod touches the bottom of a spindle socket so that the nut flexible camber externally-pulling claw can be moved to dismantle the dismantled bearing; the outer ring of the bearing can be dismantled in the same way when the camber case pulling claw is sleeved. The puller is simple in structure, convenient in use and easy to be manufactured.

Description

Draw device in the small size bearing

The utility model relates to and a kind ofly is used for small-sized machine and first front axle of automotive transmission bears device.

At present, for unloading first fore bearing of small-sized machine bearing and automotive transmission.The method that we use always be as the cloth of wiping car with hand hammer in bearing in the raceway in the circle the inside throw into, after making, the limit of cloth circle outwards squeezes, utilize outwards crowded power bearing to being extruded.So promptly take a lot of work, also effort.

In order to address the above problem, draw device in simple load and unload a kind of small size bearing when the purpose of this utility model provides a kind of use, can form according to different size, use different size in draw device, can be suitable for multistage overcoat pulling claw according to the promotion of forming nest.

The purpose of this utility model realizes in the following way, promptly the outer pulling claw of one-level nut elasticity shape is clapped with hand in the bearing that into will tear open in the raceway in the circle, screw mandrel is used the outer pulling claw of the enterprising screw flexible arc of wrench the inside, at this moment be used for nut with one of two wrench, one is used for screw mandrel, at this moment only tight screw mandrel, nut is held motionless, when screw mandrel front end during near bent axle, the radius of screw mandrel+nut elasticity pulling claw equals raceway internal diameter diameter in the bearing on one side * 2, and when screw mandrel moved on, the screw mandrel item was lived bent axle, nut elasticity pulling claw moves backward, pulls out bearing from bent axle.The use of secondary pulling claw.Raceway and spin scatter in the damage of bearings rear bearing falls apart, the outer raceway of remaining bearing.At this moment, the secondary pulling claw is clapped the into outer raceway of bearing with hand, then one-level nut elasticity pulling claw is also clapped into secondary pulling claw the inside with hand, again the enterprising nut elasticity of screw mandrel pulling claw the inside, when screw mandrel front end during near bent axle, the radius of screw mandrel+nut elasticity pulling claw thickness+secondary pulling claw thickness * 2 on one side on one side equal the outer raceway internal diameter diameter of bearing, when screw mandrel moves on, the screw mandrel front end withstands bent axle, makes the one-level pulling claw promote the secondary pulling claw, and the secondary pulling claw drives the outer raceway of bearing and pulls out.

This draws device structure tube list, and is easy to use, processes simple and easyly, and the good assistant of auto repair especially uses this to draw device can improve work efficiency 100～～200 times.

The utility model has the advantages that simple in structure, flexible operation, convenience.

Below in conjunction with accompanying drawing the utility model is described in further detail.

Fig. 1 is a longitudinal sectional view of the present utility model.

Fig. 2 is the longitudinal sectional view of the outer claw of arc.

Fig. 3 is the A-A cutaway view of Fig. 1.

Fig. 4 is the B-B cutaway view of Fig. 2.

With reference to accompanying drawing, this stripping attachment passes the screw mandrel (2) that its center and nut match by one with the outer pulling claw (1) of the elasticity camber of nut disjunctor and one, when split bearing falls apart, the outer claw (3) of available three or four paws arc (arc of claw must match with two internal diameter arcs of the inside and outside raceway of bearing), the arc piece constitutes the cartridge type cuff by wire spring (4).Just time spent by hold pulling claw outside the nut flexible arc with wrench, use another wrench rotary screw (2) to withstand bent axle again and produce reaction force, make nut flexible arc pulling claw (1) produce displacement, by the outer pulling claw (3) of arc with thrust in bearing outer ring; Also bearing outer ring can be unloaded.

Claims

1, drawing device in the small size bearing is to be used for the dismounting of automotive transmission first fore bearing to use, draw in the small size bearing device it mainly by the outer pulling claw of a nut flexible arc, one and the identical screw mandrel of nut, also has a composition such as overcoat pulling claw, it is characterized in that: the outer pulling claw of nut flexible arc, it is a boss pulling claw, mid portion is a cylindrical body, after partly be nut, it is divided into four pulling claws to a cylindrical body and boss claw, separate that the back cylindrical body partly become with the nut disjunctor, and the pulling claw of certain strain is arranged.

2, draw device in the small size bearing according to claim 1, it is characterized in that: it also has the four paws drawing outward with the nut flexible arc that claw matches or the secondary arc overcoat claw of three-jaw.