SU1546245A2 - Puller - Google Patents

Abstract

This invention relates to pullers. The purpose of the invention is the expansion of technological capabilities of the puller of pins due to the removal of wedge keys. The capture of keys and pins is provided by springs 11 and a wedge mechanism with a wedge 5 and grippers 7. The flat body 1 has elements of a stripper base on a shaft or plane. Vypressovki forces are created by the hydraulic cylinder 3. 3 Il.

Description

The invention relates to a tool for disassembly and assembly work, can be used in the repair industry for the extraction of wedge dowels and pins and is an improvement of the invention according to the author. St. No. 1458197.

The aim of the invention is to expand the technological capabilities of the puller.

This goal is achieved by changing the shape of the puller body, inserting structural elements to base the puller on the shaft with the ability to grip the key of the key and remove the key.

FIG. 1 shows the puller, general view; in fig. 2 is a view A of FIG. one; in fig. 3 is a view B in FIG. 2

The puller consists of a part of the housing 1 carrying the drive, a movable part of the housing carrying the grippers with the wall 2, the hydraulic cylinder 3 of a single-acting action with the piston 4. A wedge 5 is fixed to the piston rod with its housing axis 6 rotatably around These grips 7 with rollers 8 at the ends. The rollers 8 are constantly pressed to the wedge 5 by springs 9 through the axes 10. The movable part of the puller with the lever mechanism is held in the initial position for operation by the springs 11. The hydraulic cylinder has a return spring 12 centered in the cover 13. Lower part of the body

I made a flat rectangular shape. On one of its sides there is a longitudinal groove open with a step. On the opposite side, a bracket 14 is welded in which a retractable stop 15 is placed. To fix the position of the stop 15, a screw 16 is provided. A screw 16 is fixed to the body part 1 carrying the drive, the sides 17 are fixedly fixed to the sides to limit the position of the moving body part bearing the arms. The springs) 1 are placed in guide cups 18 fixed in the housing 1, and the movable part of the puller housing carrying the grippers is pressed through the stand 19 to the stops 17. An open wire slot for the passage is made on one of the walls of the body part bearing the grippers the wedge head to the working ends of the grippers 7 and to fit to the cylindrical surface of the shaft 20 of the product to be disassembled with the wedge key 21.

The puller works as follows.

To remove the wedge keys, the puller is fed to the part to be disassembled, for example, the hub of a pulley fixed with a wedge key, is based on the shaft 20 with grooves a and b, slides over the head of the wedge key 21, so that it enters the gap between the working ends of the grips 7. The forging cavity of the hydraulic cylinder 3 is supplied with the working fluid, under pressure of which the piston 4 with the rod and wedge 5 moves. At the same time, the movable part of the puller is initially held by springs

I1 in extreme starting position.

The wedge 5, acting on the rollers 8, spreads them, overcoming the force of the springs 9 and forced the clamps 7 to rotate around the axes 6 until the working ends come into contact with the side surfaces of the wedge 21.

Upon further movement of the wedge 5, the forces increase, which leads to a reliable gripping key, determined by the force of compression of the springs 11, and then to

The Q of the puller body 1 is in the direction of the part to be disassembled until it rests on the end face of the shaft 20. With this movement of the wedge 5 relative to the body 1, the clamping force of the key is further increased. From the moment the housing 1 stops in the butt

5 of the shaft 20, the movement of the wedge 5 occurs in conjunction with a part of the body supporting the grippers and with a removable key. At the end of the pressing out of the key, the puller is removed from the shaft, the fluid pressure is released, and under the action of the springs 11 and 12, the movable part of the body with the grippers returns to its original position, freeing the extracted key.

To limit the amount of movement of the housing 1 relative to the shaft towards

5 removable parts use retractable stop 15.

When basing the puller in the longitudinal direction along the shaft end with an emphasis from the protrusion of the longitudinal groove in the housing 1 or basing on the end of the hub using the stop 15, the amount of movement of the housing 1 towards the part to be removed is almost zero. The work of the puller when removing the pins is similar to its work on extracting wedge dowels.

Claims (1)

J-formula Pin Remover according to ed. St. No. 1458197, characterized in that, in order to expand technological capabilities by extracting also wedge dowels from 0 connecting the part with the shaft, at least two walls of the body flat and parallel to the plane of rotation of the grippers, on one of the walls of the part of the body carrying the drive, a stepped longitudinal groove, one step of which is designed 5 to base the puller on the shaft end with the puller grips accessed to the cylindrical surface of the shaft and to the head of the wedge key to be removed, and another step for free passage through the key in the adjacent wall 0 of the housing part supporting the drive, the wall part of the housing supporting the clamps, a profile groove is made to locate the stripper along the cylindrical surface of the shaft with the stripper access to the key head, and the stripper is provided with the opposite wall part of the housing carrying the drive with a bracket with a sliding stop to base the puller in the longitudinal direction along the face of the step of the part to be dismantled. five Vida sixteen Fig.Z