Bulk coal crushing device and crushing process in medium-thick coal seam working face

Abstract

The invention relates to the mining and conveying field of fully mechanized mining working faces in coal mines, in particular to a large coal crushing device and a crushing process for medium-thick coal seam working faces, which solves the problem of blockage of bulk coal at the unloading point of the working face conveyor and the entry point of the transfer machine. The large coal crushing device involved in the medium-thick coal seam working face includes a fixed base, a rotary seat, a rotary shaft, a rocker arm, a vertical swing cylinder, a briquetting block, a crushing fixed frame, a hydraulic hammer attitude control cylinder, a small connecting rod, a crushing turret, Full hydraulic breaker, horizontal swing cylinder, rake bucket, full hydraulic breaker can realize horizontal direction, vertical direction, front and rear direction and crushing angle adjustment, rake bucket can be flexibly installed and disassembled according to the needs of the working surface; the crushing process adopts optimal crushing The angle can break the static large coal and the moving large coal respectively, and the crushing efficiency is high. The device has a compact structure and simple operation, reduces the labor intensity of workers, and effectively meets the objective requirements of quick mining and pushing in fully mechanized coal mining face.

Description

Technical field: [0001] The invention relates to the mining and conveying field of fully mechanized mining working faces in underground coal mines, in particular to a bulk coal crushing device for working faces of medium-thick coal seams. Background technique: [0002] In the mining face of medium-thick coal seam, with the increase of mining height and mine pressure, large pieces of coal fall off frequently, and even large pieces of coal fall off in pieces. Large pieces of coal falling into the conveyor chute not only affect the normal transportation of the coal flow, but also when it reaches the conveyor head, it is difficult to unload at the unloading point of the conveyor, even if it is unloaded to the reloader, it is difficult to enter the reloader entry point In the box-type conveying trough at the place, it is easy to cause serious blockage in the fan-shaped area at the intersection of the working surface and the trough, and even be forced to stop. At present, the pro...

AI Technical Summary

Problems solved by technology

[0003] The first purpose of the present invention is to provide a large coal crushing device in the medium-thick coal seam working face, which can solve the problem of blockage of large coal at the unloading point of the conveyor and the entry point of the transfer machine

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