Rhombic hydraulic support for pseudo-inclined down mining working surface of steep coal seam

Abstract

The invention relates to a rhombic hydraulic support for a pseudo-inclined down mining working surface of steep coal seam. The rhombic hydraulic support is adaptable to the characteristic of a coal mining process technique in a pseudo-inclined down arrangement manner, and is in close combination with the matching characteristic of a coal mining method and equipment through researching the movement discipline of wall rocks in a comprehensive mining process mining field and the stress condition of a comprehensive mining support under the control discipline. The rhombic hydraulic support is characterized in that: a traditional four-connecting-rod stable mechanism is divided into two parts, and at the same time, the top beam and base are designed into a rhombic-like structure, thus stable beam end distance and person walking space are formed. The rhombic hydraulic support has the characteristics that: through the development of the rhombic hydraulic support for the steep coal seam, the current mining situation of the steep coal seam is changed, the coal resources are effectively and reasonable utilized, the blank in the important supporting field of comprehensive mechanical mining of the steep coal seam is filled, a premise condition is created for achieving automatic machine tracking and other unmanned automatic working surfaces of the steep coal seam, therefore, the rhombic hydraulic support has broad application prospects.

Description

technical field [0001] The invention relates to the technical field of comprehensive mechanized coal mining support equipment for underground coal mining working faces in coal mines, and belongs to coal mining support equipment for steeply inclined coal seam mining working faces. Background technique [0002] The steeply inclined coal seams are widely distributed in my country, with complex occurrence conditions, large number of mines, and great difficulty in mining. In recent years, many major accidents have occurred. 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 based on the lessons learned from major accidents in the mining of difficult-to-mine coal seams in recent years. and management level, all kinds of informal coal mining methods that violate the "Coal Mine Safety Regulations" and fail to...

AI Technical Summary

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 mining steeply inclined coal seams lies in the adaptability of equipment; due to the high adaptability and difficulty of mining machinery and equipment in steeply inclined coal seam mining, 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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