Chained tilting prevention device for advanced support

Abstract

The invention relates to a chained tilting prevention device for an advanced support. The chained tilting prevention device comprises a blocking railing which comprises a left railing body and a right railing body, wherein one ends of the left railing body and the right railing body are respectively and fixedly connected with articulated slabs and are articulated by hinges; the chained tilting prevention device is characterized in that the other ends of the left railing body and the right railing body are respectively and fixedly connected with an inserting wedge plate; an inserting wedge hole is arranged on each inserting wedge plate and is internally spliced with a wedge pin; a limiting anti-dropping plate is fixedly connected to the outer side of the blocking railing; and a Z-shaped limiting anti-dropping groove is arranged on the limiting anti-dropping plate; and a ring-shaped chain is connected to the interior of the Z-shaped limiting anti-dropping groove. The invention realizes the purpose that the chained tilting prevention device for the advanced support under the coal mine shaft can be dismantled conveniently; and the chained tilting prevention device has the advantages of realizing the flexible connection function, meets the requirements that the influences of periodic weighting and partial earth pressure of the coal mining face of a coal mine can buffer deformation, increasing the safety factor of worker operation and reducing the labor intensity of workers, the material cost and the like.

Description

technical field [0001] The invention relates to a flexible connection and buffering anti-falling device for the advance support of the underground mining working face of a coal mine, in particular to an advanced pillar chain type anti-falling device. Background technique [0002] At present, the advanced pillar anti-falling device in the coal mine uses a δ=50mm flat iron bar to be used alternately with a 1m-long 6-point welded pipe. There is no flexible connection like a chain, and there is no device that can be easily disassembled and installed. Because the bar It is fixed on the pillar with bolts. Affected by the damp air in the mine, the corrosion is serious, and it is difficult and inconvenient to disassemble and install. In addition, affected by the underground periodic pressure and local ground pressure, the support state of the pillar changes, resulting in the connection of welded pipes. Distorted and deformed, the damage is more serious, which further increases the d...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an advanced pillar chain type anti-falling device, which fundamentally solves the problem of disassembly and assembly of the advanced pillar anti-falling device in coal mines, and meets the requirements of buffering deformation caused by periodic pressure and local ground pressure in coal mining working faces. , to ensure the safe production of the mine

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