Forepoling device for coal mine

Abstract

The invention belongs to the field of coal mines, and particularly relates to a forepoling device for a coal mine. The forepoling device solves the problem that an existing forepoling device is proneto causing secondary damage to an I-shaped steel shed in the swinging process of a tunneling machine roller so as to cause secondary input of manpower and material resources and bring great potentialsafety hazards. According to the scheme, the forepoling device comprises a roadway and coal walls, wherein the coal walls are located on the inner walls of two sides of the roadway; a tunneling machine is placed in the roadway; stand columns are arranged on the two sides of the tunneling machine; the bottom ends of the two stand columns are inserted into the inner wall of the bottom side of the roadway; slots are inserted into the top ends of the two stand columns; seat grooves are fixedly formed in the top sides of the slots; the same I-shaped steel top beam is movably arranged in the two seat grooves; and a plurality of clamping grooves are movably formed in the I-shaped steel top beam. According to the forepoling device, the structure is reasonable, and under the condition that the interval between an upper coal mining layer and a lower coal mining layer is small and an anchor rod support cannot be used, the forepoling device for the coal mine is arranged, so that the situation thatthe tunneling machine roller swings around so as to damage to airborne forepoling is avoided, and the potential safety hazards are avoided.

Description

technical field [0001] The invention relates to the technical field of coal mines, in particular to an advanced support device for coal mines. Background technique [0002] Underground comprehensive mechanized coal mining, when the upper layer of coal is mined and the lower layer of coal is mined, the working face is a very close coal seam working face. During the excavation process, due to the thin layer spacing and cumbersome support technology, only I-shaped steel shed supports can be erected. Since the length of the support device to the tunneling face cannot exceed 1.7 meters, the roadheader drum will swing up and down, left and right during the operation. If the airborne advanced support is used, it is easy to damage the I-beam shed during the swinging process of the roadheader drum. Cause secondary damage, cause secondary input of manpower and material resources, and bring great safety hazards, according to the actual situation on site, a set of advanced support devic...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the disadvantages in the prior art that it is easy to cause secondary damage to the I-beam shed during the swinging process of the roller of the roadheader, causing secondary input of manpower and material resources, and bringing great potential safety hazards. A kind of advanced support device for coal mine

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