High-speed energy absorption anti-impact retreat hydraulic support for coal mine

Abstract

The invention provides a high-speed energy absorption anti-impact retreat hydraulic support for a coal mine. The hydraulic support comprises a bottom beam, energy absorption retreat members, connecting rods, hydraulic props and top beams, wherein two top beams are connected together in a hinged mode; an energy absorption material is filled at the hinged position of the two top beams; the bottom beam is connected with the top beams through the connecting rods; energy absorption materials are filled in the energy absorption retreat members; one end of each energy absorption retreat member is connected with the bottom beam or each top beam, and the other end of each energy absorption retreat member is matched with one end of each hydraulic prop; and the other end of each hydraulic prop is arranged in a needling of each top beam or the bottom beam. The hydraulic support has the characteristics of a rigid support and a flexible support simultaneously, the whole hydraulic support can be prevented from being damaged, the damage degree of surrounding rocks is effectively reduced, and the safety of underground operating personnel is ensured; in addition, production recovery time can be greatly shortened after rock burst occurs.

Description

[0001] Field [0002] The invention relates to a high-speed energy-absorbing and anti-shock abdication hydraulic support equipment used in coal mines, in particular to a safety support for the up and down trough advance safety support on the impact rock working face, which can effectively avoid the casualty accident of miners caused by the impact rock pressure And the hydraulic support system that destroys the working roadway. Background technique [0003] Rockburst is a kind of dynamic disaster caused by the sudden and violent destruction of coal and rock masses such as underground roadways, coal pillars, and mining working faces in coal mines. Under normal circumstances, rock burst occurs, causing heavy casualties and property losses. According to incomplete statistics, more than 100 coal mines in China have experienced severe rockburst disasters, and the scope of the disaster is almost all over the major mining areas in China. With the continuous increase of coal mining d...

AI Technical Summary

Problems solved by technology

Whether it is a new stack type hydraulic support or a portal type roadway support support, they all belong to "rigid support". Although they have a strong ability to withstand static loads, they are slow to give way under impact loads and have no ability to absorb impact energy. , so that the hydraulic support is severely bent and deformed, or even destroyed

Moreover, this hydraulic support has defects such as heavy weight, inconvenient disassembly and assembly, and difficult transportation.

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