Deflectable cutting device of coal mining machine

Abstract

The invention provides a deflectable cutting device of a coal mining machine and mainly aims at solving the technical problems of low production efficiency and the like. According to the adopted technical scheme, the device is provided with a transitional frame; the tail end of the transitional frame is hinged with a machine body; the side A of the head end of the transitional frame is hinged with a rocker arm assembly, and the side B of the head end of the transitional frame is provided with an oil cylinder assembly; and one end of the oil cylinder assembly is hinged with the transitional frame, and the other end of the oil cylinder assembly is hinged with the rocker arm assembly. The deflectable cutting device is suitable for a high-power coal mining machine for thin and extremely thin coal seams under a complicated geological condition.

Description

Technical field: [0001] The invention relates to a cutting machine, in particular to a cutting rod. Background technique: [0002] With the continuous reduction of large-scale mining of medium-thick coal seams and above, the mining of thin and thin coal seams is more important. In order to reduce resource waste and solve the needs of liberated seam mining as high-gas medium-thick coal seams, the problem of efficient mining of thin coal seams has become a problem. The problem that needs to be solved urgently. Due to the limitation of the space of the working face, the thin coal seam has always been the weak link of industrial and mine mining. The capacity, installation, maintenance and operation of equipment are greatly restricted. The consumption rate of the roadway is high, the replacement is tense, and the economic benefit is poor. Experience shows that comprehensive mechanization is an important way to achieve high-efficiency and safe mining, and the primary issue in rea...

AI Technical Summary

Problems solved by technology

[0004] The shearer should not only be able to meet the mining in the middle of the working face with the conveyor in the middle, but also meet the oblique cutting mining with the conveyor at both ends of the working face; due to the need for oblique mining, the gap in the middle of the working face will be reduced. , but the size of the gap must meet a sufficient value, otherwise the drum of the cutting device will not be able to cut through the bottom plate; in addition, the gap between the sharp point of the shovel plate of the conveyor and the front face of the drum will be reduced due to the oblique cutting of the working face, And the size of this gap must also meet a certain value, otherwise the roller of the cutting device will cut the shovel of the conveyor, causing serious accidents;

[0005] Due to the above two reasons, the coal loading distance between the end face of the drum and the inner end face of the side of the conveyor trough is obviously increased, while the final stage transmission size of the high-power cutting device is large, the diameter of the drum is small, and the height of the effective coal charging blade of the drum is small. In the end, the coal loading effect of the shearer is extremely poor, and the coal is repeatedly crushed in the coalway, and is repeatedly thrown to raise dust, which leads to the deterioration of the working face condition, and even the coal mining operation cannot be carried out in severe cases

[0006] For thin coal seam shearers, auxiliary coal loading measures such as adding coal baffles are used in the prior art, but due to the influence of operating space, it is difficult to widely use coal baffles; especially for high-power thin coal seam shearers, its applicable effect is better Difference

In the existing thin coal seam (especially very thin coal seam) mining, one-way mining is often adopted, that is, the shearer cuts the coal once, returns to load the coal and then walks again, the production efficiency is extremely low, and this coal mining process cannot be used for broken roofs. Applicable, obviously limiting its scope of use

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