SU1458197A1 - Pin extractor - Google Patents

Abstract

The invention relates to tools for assembly and disassembly. The purpose of the invention is to increase reliability and performance. A puller with a wedge-lever drive of the mechanism for gripping the pin for its protruding part is set with the supporting end 12 on the plane. Under pressure from the oil, the hydraulic piston rod 4 of the first place with the wedge 5 moves upwards, and the gripping mechanism, remaining in the initial position under the action of the screw, engages the pin. Upon further upward motions of the drive, an extrusion occurs, and upon returning to the initial C5 position, the pin is released. 3 il. from 00 to -vj "te.r

Description

The invention relates to devices for dismantling parts and can be used during disassembly and assembly works, in particular, in automotive repair.

The purpose of the invention is to increase reliability and performance by protecting the grip mechanism from moving in the longitudinal direction of the puller until the pin seizes securely.

Fig, 1 shows the puller pins, - a general view; FIG. 2 is a section A-A in FIG. 1; Fig, 3 - section B-Bnafig, 1,

The pin remover consists of a housing made of two parts 1 and 2 moving relative to each other along the axis of the stripper. A wedge drive in the form of a one-side hydraulic cylinder 3 is placed on the housing part 1. action, with a rod 4 of which a wedge 5 is connected,

The lever mechanism of the gripper consists of pivotally connected axles 6 with the second part 2 of the body of the grippers 7 with rollers 8 at the non-working ends interacting with the wedge 5, the non-working ends of the grippers 7 are connected by their springs 9 and 2 cases in the initial position. The cylinder has a return spring 11. The support ring 12 is installed on the body part 1 The springs 10 are placed on the guide pins x 13, which are passed through the holes 14 of the body part 2 and fixed to the body part 1.

In order to press out the pin, the puller is mounted with the support ring 12 on the part plane and within the gap between the pin and the prisms of the grips 7, oil is supplied to the hydraulic cylinder, under

five

0

50

d

five

the pressure of which the piston with the rod 4 and the wedge 5 moves upwards, and the part 2 of the housing is held by the springs 10 in the extreme position. In this case, the rollers 8 are consumed by breaking the forces of the springs 9 and turning the grippers 7 around the axes 6 until the grippers fte come into contact with the pin with all four points of the grips prisms.

Upon further movement of the wedge 5, the clamping force increases until the force developed by the hydraulic cylinder does not exceed the force of the holding springs 10 and the pressing-out force (the force of the pressing out is less than the correctly calculated friction force).

From this moment on, the movement of the clutch 5 occurs together with the part 2 of the body and the pressed-out pin in part 1 of the body of the puller. At the end of the extrusion of the pin, the pressure is released, and under the action of the springs 9-11, the puller returns to its original position, releasing the extracted pin.

Claims (1)

Invention Formula A pin puller containing a wedge drive of a lever pin pickup mechanism housed in a housing, characterized in that, in order to increase reliability and productivity, the housing is designed as two parts moving relative to each other along the puller axis, one of which has an actuator, and the other is hingedly connected to the claws, the puller is provided with springs, some of which are connected to parts of the body, and others are the non-working ends of the claws, and rollers placed on the grips to interact with the drive wedge, S s Fie.2 Fig.Z