Rhombus-shaped hydraulic support in steeply inclined coal seam dipping pseudo-inclined mining face

Abstract

The invention relates to a rhombus-shaped hydraulic support in a steeply inclined coal seam mining face, which adapts to the coal mining process characteristics of the inclined pseudo-inclined arrangement, splits the traditional four-bar linkage into two parts, and simultaneously designs the top beam and the base as Diamond-shaped structure, through adjustment devices such as balance adjustment oil cylinders hinged on the top beam and cover beam to realize the adjustment of the support state, to ensure a stable beam end distance to prevent the roof from falling, to maintain the smooth flow of the pedestrian passage in front of the hydraulic support, and to form a stable beam end distance and pedestrian space.

Description

technical field [0001] The invention relates to the technical field of comprehensive mechanized coal mining supporting equipment for underground coal mining working faces in coal mines, and belongs to coal mining supporting equipment for mining working faces in steeply inclined coal seams. Background technique [0002] Steeply inclined coal seams are widely distributed in my country, with complex occurrence conditions, a large number of mines, and difficult mining. Many major accidents have occurred in recent years. In December 2006, the State Coal Supervision Bureau actively promoted the reform of coal mining technology, eliminated informal coal mining methods, and further improved the safe mining technology of steeply inclined coal seams in response to the lessons learned from major accidents in the mining of difficult-to-mining coal seams in recent years. And management level, for the violation of the "Coal Mine Safety Regulations", all kinds of informal coal mining metho...

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Problems solved by technology

[0005] Using traditional methods and techniques to mine steeply inclined coal seams is an insurmountable problem, and there is no effective solution

Practice has proved that the key to the mining of steeply inclined coal seams lies in the adaptability of equipment; due to the high adaptability and difficulty of coal mine machinery and equipment in the mining of steeply inclined coal seams, the development of steeply inclined coal seam mining in most mining areas is slow and the recovery rate is low. serious waste of resources

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