Cutting disc type rotating arm heading machine cutting device

Abstract

The invention relates to treatment of gas under a coalmine well and laneway roofs, in particular to a heading machine cutting device capable of preventing coal and gas outburst and effectively reducing breaking of laneway roofs. The cutting disc type rotating arm heading machine cutting device comprises the following components: a cutting head, a cutting arm, a power transmission system and a power unit, wherein rotating arms on the cutting head are driven by a rotary arm motor to rotate at low speed; cutting discs mounted on the rotating arms are driven by a main power system to rotate at high speed and rotate together to cut coal; vibration is not generated when the cutting discs rotate at high speed to cut coal-rock mass, so that a vibration source for generating mechanical waves is eliminated, the roof completeness of a working face is effectively protected, the occurrence of a roof accident is prevented, the energy is prevented from being delivered to the deep coal-rock mass, the formation condition of coal and gas outburst is prevented, the occurrence of coal and gas outburst phenomenon is completely prevented, and the safety production in a coal mine is guaranteed.

Description

technical field [0001] The invention relates to gas and roadway roof control in coal mines, in particular to a roadheader cutting device capable of preventing coal and gas from protruding and effectively reducing roadway roof breakage, and belongs to the field of mining machinery. [0002] Background technique [0003] In coal mine excavation roadway construction, when the existing roadheader cutting device is used to cut coal and rock mass, the rock mass will generate strong mechanical waves. After the surrounding rock is affected by the mechanical wave, the pressure on the coal body changes periodically, forming a tamping effect, causing the pressure between the rock formation and the coal body to be several times or ten times that of the original, causing the coal body to be broken, and a large amount of adsorbed gas to be decomposed into a free state. As the coal body is broken, its fluidity increases, the gaps in the coal body shrink, the volume of the coal body is re...

AI Technical Summary

Problems solved by technology

At the same time, when the existing cutting device of the roadheader cuts the coal and rock mass, the strong vibration will break the roof of the roadway, which will easily cause roof accidents and seriously threaten the safety of the roadway construction, especially the safety of life and property of underground personnel.

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