Device for disassembling worn pin shaft of coal mining machine

Abstract

The invention discloses a device for disassembling a worn pin shaft of a coal mining machine, and relates to the technical field of coal mine production. The device comprises a holding mechanism, and the holding mechanism is provided with a pulling-out mechanism and a supporting mechanism; the holding mechanism comprises a fixing plate, an inclined arm, a first holding sleeve, a handle, a second holding sleeve, an extending plate and a protruding block; and the inclined arm is fixedly arranged in the middle of the right side of the fixing plate, the first holding sleeve fixedly sleeves the middle of the outer side of the inclined arm, the handle is fixedly arranged at the end of the inclined arm, the second holding sleeve fixedly sleeves the outer side of the handle, and the extending plate is fixedly arranged in the middle of the left side of the fixing plate. The protruding block is fixedly arranged at the rear side of the extending plate. According to the device, the pin shaft can be effectively pulled out, meanwhile, the device does not need to be connected with a machine body, then tedious dismounting and mounting operation is avoided, the use difficulty is reduced, and meanwhile the pin shaft dismounting efficiency is greatly improved.

Description

technical field [0001] The invention relates to the technical field of coal mine production, in particular to a device for dismantling a wear pin of a coal shearer. Background technique [0002] With the continuous improvement of the degree of mechanization of fully-mechanized mining and fully-mechanized excavation in coal mines, the number of shearers, roadheaders, and coal excavators used is also increasing. The main connection methods of machine bodies, roadheaders and coal excavators are all connected by pin shafts. Therefore, after working for a period of time, these pin shafts are very difficult to disassemble due to different degrees of wear. In order to better align them for disassembly. [0003] The utility model patent of the patent application publication number CN 212496360 U discloses a device for dismantling the wear pin of the shearer, including: a fixed plate, which is arranged horizontally, and a through hole is opened on it, and a hydraulic nut is located ...

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned device still has some shortcomings in actual use. The more obvious one is that the positioning plate needs to be installed on the body through bolts before the pin can be disassembled. After the single pin is disassembled, the positioning plate needs to be disassembled. , and then change the location for reinstallation, which is too cumbersome in actual use

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