CN108058129A - A kind of extracting tool of blind hole neck bush - Google Patents

Abstract

The present invention relates to a kind of extracting tools of blind hole neck bush, including rotatable chela, fixed chela, pull rod shaft, support plate, force nut, fixed chela is fixedly mounted on the bottom of pull rod shaft, rotatable chela is arranged on fixed chela and can be rotated around pull rod shaft, the rotatable chela and fixed chela end to pull rod axis center distance between bushing internal-and external diameter to be removed, the upper surface of rotatable chela and fixed chela end face coordinates with axle sleeve bottom to be removed, the pull rod shaft passes through support plate, and is equipped with force nut.The present invention, by the effect of exert a force nut and chela, uniformly lifts bushing, realizes neck bush and its mating parts blind hole is not destroyed in disassembly process upwards in the case of the unsuitable point of application.

Description

A dismantling tool for a blind hole inner liner

technical field

The invention relates to a dismantling tool, in particular to a dismantling tool for a blind hole inner bush.

Background technique

In the process of the existing blind hole inner bushing, due to the high compression tightness and no suitable force application point, the disassembly method of destroying the bushing by machining is usually used, which is easy to cause damage to the matrix.

Contents of the invention

The purpose of the present invention is to design a dismantling tool for the inner bushing that can be used without a suitable force application point, the tightness of the bushing and the matching fitting is relatively large, and the fitting is a blind hole, and can realize the inner bushing and its matching parts. Blind holes are not damaged during disassembly.

The technical scheme of the present invention is: a dismantling tool for a blind hole inner bush includes a rotatable claw, a fixed claw, a pull rod shaft, a support plate, and a force nut, and the fixed claw is fixedly installed on the bottom of the pull rod shaft and can be rotated. The claws are arranged on the fixed claws and can rotate around the shaft of the pull rod. The distance from the ends of the rotatable claws and the fixed claws to the center of the rod shaft is between the inner and outer diameters of the bushing to be disassembled. The rotatable claws and The upper end face of the end face of the fixed claw is matched with the bottom of the shaft sleeve to be disassembled, and the pull rod shaft passes through the support plate, and a force nut is installed thereon. An axial pull pin is arranged above the rotatable jaw on the pull rod shaft. The upper end surfaces of the rotating jaws and the fixed jaws are sloped.

When the present invention is in use, the rotatable jaws and the fixed jaws are first overlapped or located on the same side, put into the lower end surface of the bush to be disassembled, the rotatable jaws are adjusted to be located at the other end of the fixed jaws, and the support plate is fixed or set On the upper part of the base body, tighten the force nut at the upper end to drive the claws to fit and fix the end face of the bush to be removed, and continue to disassemble the bush through the force nut and the support plate without any damage. In the absence of a suitable force application point, the present invention evenly lifts the liner upwards through the action of the force application nut and the claws, so that the blind hole of the inner liner and its matching parts is not damaged during the disassembly process.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Figure 2 is a schematic diagram of the position of the two jaws in the working state;

Figure 3 is a schematic diagram of the positions of the two jaws in the installed state;

Fig. 4 is a schematic diagram of another improved structure.

Detailed ways

As shown in the figure, a removal tool for a blind hole inner bush includes a rotatable claw 1, a fixed claw 2, a pull rod shaft 3, a support plate 4, and a force nut 5, and the fixed claw 2 is fixedly installed on the pull rod shaft 3 The bottom of the rotatable jaw 1 is set on the fixed jaw 2 and can rotate around the rod shaft 3. The distance from the end of the rotatable jaw and the fixed jaw 2 to the center of the rod shaft 3 is between the bushing to be disassembled 6 Between the inner and outer diameters, the upper end faces of the rotatable jaws 1 and the end faces of the fixed jaws 2 cooperate with the bottom of the bushing 6 to be disassembled. The pull rod shaft 3 passes through the support plate 4 and is equipped with a force nut 5 . An axial pull pin 7 is arranged above the rotatable jaw 1 on the pull rod shaft 3 . The upper end surfaces of the rotating jaws 1 and the fixed jaws 2 are sloped.

Claims (3)

1. a kind of extracting tool of blind hole neck bush, which is characterized in that the instrument includes rotatable chela (1), grips pincers Pawl (2), pull rod shaft (3), support plate (4), force nut (5), fixed chela (2) are fixedly mounted on the bottom of pull rod shaft (3), can turn Dynamic chela (1) is arranged on fixed chela (2) and can be rotated around pull rod shaft (3), the rotatable chela and fixed chela (2) The distance at end to pull rod shaft (3) center is between bushing to be removed (6) internal-and external diameter, rotatable chela (1) and fixed chela (2) upper surface of end face coordinates with axle sleeve to be removed (6) bottom, and the pull rod shaft (3) passes through support plate (4), and is equipped with and applies Power nut (5).

2. a kind of extracting tool of blind hole neck bush as described in claim 1, which is characterized in that be located in pull rod shaft (3) Axial draw is provided with above rotatable chela (1) and sells (7).

A kind of 3. extracting tool of blind hole neck bush as described in claim 1, which is characterized in that the rotation chela (1) Upper surface with fixed chela (2) end face is inclined-plane.