Walking support for mine excavation face, walking method and roadheader

Abstract

The invention provides a walking type support for a heading face of a mine and a walking method thereof. The walking type support comprises roof timbers, upper advancing jacks, friction pair structures enabling relative front-back sliding, single swing rods, rear supporting stand pillars, front supporting stand pillars, a material spading plate, a pedestal and lower advancing jacks. The front and rear supporting stand pillars are both telescopic. When the rear supporting stand pillars are in a supporting state and the front supporting stand pillars are in a floating state, the upper advancing jacks push the roof timbers to move forward for a certain distance relative to a roof and the lower advancing jacks push the material spading plate for a certain distance forward. When the front supporting stand pillars are in a supporting state and the rear supporting stand pillars are in a floating state, the lower advancing jacks pull the pedestal forward for a certain distance. The walking type support requires no unloading walking and does not cause repeated support to the roof, and prevents stratum separation and collapse of the roof. The invention also provides a heading machine with the walking type support, which has the advantages of high construction efficiency, low labor intensity and high safety of operators, and is suitable for promotion and application.

Description

technical field [0001] The invention relates to the field of mine excavation equipment manufacture and application, relates to a support machine for mine excavation roadway roof control, in particular to a walking type support for a mine excavation working face, a walking method and a method for maintaining the stability of the roof during the mine roadway excavation process. boring machine. Background technique [0002] At present, in the underground roadway excavation of mines (coal mines, metal mines, gypsum mines, potash mines, etc.) in China, the roof of the roadway needs to be permanently anchored with bolts. If the traditional bolt anchoring method is adopted, the operator must be in an unsupported area. When excavating the front end of the tunnel face, using electric drills to drill anchor holes, manually transporting anchors and anchoring resin, and manually tightening anchor nuts, etc., the phenomenon of roof falling off and coal (rock) wall slabs occasionally occu...

AI Technical Summary

Problems solved by technology

[0004] At present, most of the temporary support brackets used in the roadway excavation face are moved forward by unloading and moving forward. One step is about 0.5 to 1.0 meters, and the distance is about 4 meters. The repeated support of the bracket to the roof is about There are 4 to 8 times, which can easily cause the roof of the roadway to break and affect the quality of the roadway.

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