Big-lump-coal crushing device for medium-thickness-coal-seam face and crushing process

Abstract

The invention relates to the mining and conveying field of a fully-mechanized coal mining face of an underground coal mine, in particular to a big-lump-coal crushing device for a medium-thickness-coal-seam face and a crushing process, and solves the problem that the unloading point of a face conveyor and the entry point of a reversed loader are blocked by big lump coal. The big-lump-coal crushing device comprises a fixed base, a revolving seat, a revolving shaft, a rocker arm, a vertical swinging oil cylinder, a pressing block, a crushing fixing frame, a hydraulic hammer attitude control oil cylinder, a small connecting rod, a crushing rotating frame, a fully-hydraulic crushing hammer, a horizontal swinging oil cylinder and a scraper bucket, wherein the fully-hydraulic crushing hammer can be adjusted in the horizontal direction, the vertical direction, the fore-and-after direction, the crushing angle and the like, and the scraper bucket can be flexibly mounted and dismounted according to requirements of the face. The crushing process adopts the optimal crushing angle to respectively crush still big lump coal and moving big lump coal, and has a relatively high crushing efficiency. The big-lump-coal crushing device is compact in structure and simple to operate, can reduce the labor intensity of workers, and effectively meets the quick-mining and quick-pushing objective demand of the fully-mechanized coal mining face of a coal mine.

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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