Down-hole tunnel suspended stepping self-moving advance timbering

Abstract

The suspended walking movable leading support for anchor bolt support of the heading face in coal mine consists of one hydraulic support mechanism in variable freedom degree and comprising rocker-four bar mechanism and parallelogram mechanism; one walking shift mechanism connected to the hydraulic support mechanism and comprising main arm, sliding arm and telescopic arm; manipulators moving with the walking shift mechanism and set in pairs separately on the main arm, the sliding arm and the telescopic arm; and one manipulator held cantilever beam. The support is simple and strong, and can form cantilever timbering before the heading face automatically to ensure production safety and raise work efficiency.

Description

technical field [0001] The invention relates to a suspension type stepping self-moving advance support for underground roadway construction, and is especially suitable for the advance support of the roof of mine underground roadway. Background technique [0002] Mine support is very important to coal mine safety production. According to the survey, among the fatal accidents of coal enterprises including my country's statistics in 2005-2006, the number of deaths caused by roof accidents due to problems with support equipment was close to 40%, accounting for A sizable portion of coal mine accidents. Bolt support has developed rapidly in recent decades due to its advantages of simplicity, safety, and low cost, and has broad development prospects in mine support equipment. [0003] In the process of coal mine production, due to the defects of the permanent support mode, the phenomenon of headspace operation often occurs, which poses a great danger to the personal safety of coal ...

AI Technical Summary

Problems solved by technology

[0003] In the process of coal mine production, due to the defects of the permanent support mode, the phenomenon of headspace operation often occurs, which poses a great danger to the personal safety of coal miners

For this reason, technical personnel at home and abroad have also carried out some research on the advanced temporary support of coal mine support. The existing problems mainly include: (1) The strength of the advanced beam, whether it is a shed roadway or an anchor net support roadway , all need to be fixed on the permanent support with fixed clips. The production of advanced beams and fixed clips, including the materials used and the welding between materials, all require a certain strength. If the strength does not meet the requirements, it will be It will bring hidden dangers to safety work; (2) When the geological conditions change seriously, the workload of trespassing the roof of the scaffolding roadway is heavy and the danger is great; (3) During the installation process of the advanced support, there is still the phenomenon of empty top operation, the quality of the installation is not easy to guarantee, and most of them are manual, which poses a serious safety hazard

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