Hydraulic automatic pin pulling device

Abstract

The invention discloses a hydraulic automatic pin pulling device. The hydraulic automatic pin pulling device comprises a support cylinder body, a pin pulling cylinder body, a support cylinder piston rod, a pin pulling cylinder piston rod and a bolt connector, wherein the pin pulling cylinder body is arranged inside the support cylinder body; the support cylinder body and the pin pulling cylinder body are in concentric nesting assembling; the support cylinder piston rod is of a closed type hollow shaft design; the pin pulling cylinder piston rod is arranged inside the support cylinder piston rod; the support cylinder piston rod and the pin pulling cylinder piston rod are in concentric nesting assembling; the top of the pin pulling cylinder piston rod is provided with the bolt connector which is linked with a pin shaft; the hydraulic automatic pin pulling device is arranged on a bearing support seat; the height of the bearing support seat is adjustable; and the hydraulic automatic pin pulling device is connected with a hydraulic station which is provided with a hydraulic control system. The hydraulic automatic pin pulling device has a reasonable structure and large tensioning force, is convenient to use, and is safe and reliable, thus the troublesome, time-consuming, labor-consuming and unsafe problems when a worker performs hammering by manual work originally are solved.

Description

technical field [0001] The invention relates to a hydraulic automatic pin pulling device used for pulling out positioning pins of mining hydraulic supports and large-scale equipment, and the pin shaft can be pulled out conveniently by using the device. Background technique [0002] The hydraulic support of the coal mining face relies on high-pressure liquid, columns and corresponding power jacks to realize the four basic actions of lifting frame, pushing and moving frame, and the connection of various moving parts is mostly connected by pin shafts. Due to the large volume and weight of the large hydraulic support, it cannot go up and down the well as a whole, so it must be separated to go up and down the well. This involves the dismantling of various connecting pins on the hydraulic support. Some pins are relatively large, and it takes a lot of effort to disassemble them after long-term use. Cause the maintenance work task of support to increase the weight of thus, this wil...

AI Technical Summary

Problems solved by technology

Due to the large volume and weight of the large hydraulic support, it is impossible to go up and down the well as a whole, so it must be separated to go up and down the well

This involves the disassembly of various connecting pins on the hydraulic support. Some pins are relatively large, and it is more laborious to disassemble after long-term use.

As a result, the maintenance task of the support is aggravated, which will inevitably bring a lot of labor intensity to the maintenance work and maintenance of the hydraulic support, and the work safety factor is not high

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