Combined height-adjustable coal cutting machine with small roller and large mining height, as well as coal cutting process of combined height-adjustable coal cutting machine

Abstract

The invention relates to a combined height-adjustable coal cutting machine with a small roller and a large mining height, as well as a coal cutting process of the combined height-adjustable coal cutting machine. The combined height-adjustable coal cutting machine comprises a machine body assembly, coal cutting rollers, a travelling mechanism, an auxiliary device, a hydraulic control system and an electrical control system, and is characterized in that combined height-adjusting devices are symmetrically mounted on two side surfaces of the machine body assembly; and each combined height-adjusting device comprises a main height-adjusting oil cylinder, an auxiliary height-adjusting cutting arm and an auxiliary height-adjusting oil cylinder. The coal cutting process adopts a knife inserting method without notch cutting; the coal cutting roller at the front end of the coal cutting machine cuts residual coal bodies under the action of the oscillation of both the main height-adjusting cutting arm and the auxiliary height-adjusting cutting arm, wherein the moving trace is an arc, and the oscillation angle Alpha is at least 90 DEG; and the coal cutting roller at the rear end of the coal cutting machine cuts coal along a bottom plate, wherein the moving trace is a straight line. The coal cutting machine has the advantages that the structure is compact; the size and the weight are smaller; the suitability is strong; the mounting and the transportation are convenient; and the coal cutting machine is suitable for large, middle or small scale of coal mines with large mining heights.

Description

technical field [0001] The invention belongs to underground mining equipment and mining technology of coal mines, and is a composite height-adjusting type small drum large mining height shearer and a coal mining process particularly suitable for large, medium and small coal mines. Background technique [0002] At present, the underground coal mining process of large and medium-sized coal mines is a comprehensive mechanized coal mining process. The coal mining equipment used is a double-drum shearer, hydraulic support, scraper conveyor on the working face, reloader, crusher, belt conveyor, Advance support bracket, etc. The double-drum shearer adopts no incision to feed the knife. When it works normally, the front-end drum cuts coal along the top plate, and the rear-end drum cuts coal along the bottom plate. The diameter of the drum of the double-drum shearer is generally between 1 and 3 meters, and the diameter of the two drums is the highest coal seam thickness that the she...

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to solve the problems existing in the above traditional double-drum large mining height coal mining machine, and to provide a machine suitable for large, medium and small coal mines with low power, large mining height, small drum, compound height adjustment, compact equipment structure, small volume and

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