Cross side dumping arrangement coordinated mode of rear conveyer of fully mechanized working face and support structure

Abstract

The invention discloses a new cross side dumping coordinated technology and a new supporting technology for an end region of a fully mechanized working face. The head of a rear conveyer is changed to a cross side dumping arrangement mode, and a motor of the rear conveyer is arranged in a smooth trough, so that the rear space of a transition support is not occupied any more, the center distance between the heads and the tails of the front and rear conveyers is consistent with the center distance of the middle sections, meanwhile, the unloading height of the conveyers is reduced, and the coal caving effect of the heads and the tails and the recovery rate of coal resources are further improved; and because the transition bracket is in the same structural form as a middle bracket, the category of hydraulic brackets of the working face can be reduced, and effective coal caving of the transition section of the top coal caving working face can be realized. A tunnel tail bracket is arranged at the rear part of a transferring machine, so that protection of the rear part of the transferring machine and smooth push of the transferring machine are realized; meanwhile, side guard plates which can be hinged are arranged on the lateral surfaces of the transferring machine, so that the rear gangue is prevented from falling into the tunnel tail bracket; end brackets are arranged at two sides of the transferring machine and have asymmetrical structures, a top beam has a step-type top beam structure, and the end brackets are matched with the tunnel tail bracket of the rear part, so that the stability of a top plate in the cross side dumping coordinated end region of the fully mechanized working face is maintained, and safe and efficiency recovery of the fully mechanized working face is realized.

Description

technical field [0001] The invention relates to a design method of a hydraulic support, in particular to a three-dimensional design method of a hydraulic support in consideration of the dynamic influence of the surrounding rock of a coal mining face. technical background [0002] Comprehensive mechanized top-coal caving mining (abbreviated as fully-mechanized caving mining) is one of the efficient mining methods for thick coal seams in my country. The existing fully-mechanized caving working face is generally arranged in parallel with the driving parts of the front and rear conveyors, the motor of the driving part is parallel to the working face, and the unloading method of the conveyor and transfer machine is end unloading. Due to the influence of the drive motor of the conveyor, the center distance of the front and rear conveyor heads and tails is inconsistent with the center distance of the middle section. Usually, 3 transition brackets are arranged in the transition sect...

AI Technical Summary

Problems solved by technology

Due to the influence of the drive motor of the conveyor, the center distance of the front and rear conveyor heads and tails is inconsistent with the center distance of the middle section. Usually, 3 transition brackets are arranged in the transition section of the conveyor head and tail, and the transition brackets are mostly reversed. The four-link structure makes it impossible to discharge coal in the transition section, which restricts the improvement of the recovery rate of the fully mechanized caving face

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