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Two-column hydraulic support for large mining height top coal caving with three-stage top coal recovery device

A technology of recovery device and hydraulic support, which is applied in the field of top-coal recovery device of hydraulic support for top-coal caving, can solve problems such as caving of hard top-coal in thick coal seams, and achieve the effects of increasing caving amount, increasing action time, and increasing effect effect of space

Active Publication Date: 2017-09-22
TIANDI SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention can solve the problem of caving and recovery of hard top coal in thick coal seams

Method used

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  • Two-column hydraulic support for large mining height top coal caving with three-stage top coal recovery device
  • Two-column hydraulic support for large mining height top coal caving with three-stage top coal recovery device
  • Two-column hydraulic support for large mining height top coal caving with three-stage top coal recovery device

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Embodiment Construction

[0025] Two-column hydraulic support for large mining and high caving coal with three-stage top-coal recovery device see figure 1 As shown, it is mainly composed of side protection device 1, telescopic beam device 2, top beam device 3, cover beam device 4, front connecting rod 5, rear connecting rod 6, base device 7, top coal recovery device 8 and column 9, balance jack 10 and other components.

[0026] The structure of the two-column hydraulic support for large mining and caving top coal of the belt top coal recovery device of the present invention is as follows: a top beam device 3 and a base device 7 at the two ends of which are hinged by two symmetrical columns 9; The extension telescopic beam device 2 is hinged with the cover beam device 4 at the rear end; the balance jack 10 is hinged between the top beam device 3 and the cover beam device 4; the front link 5 and the rear link 5 are hinged between the cover beam device 4 and the base device 7 The connecting rod 6 forms a...

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Abstract

The invention discloses a two-column hydraulic support for high mining and caving top coal with a maximum height greater than 6 meters and a top coal recovery device. The top coal recovery device is divided into three stages: the first stage is a swing type The tail beam jack hinged with the cover beam controls its up and down swing to realize the opening and closing of the coal discharge port; the second stage is a telescopic coal discharge beam device, and in the first swing type tail beam, it is controlled by the inserting plate jack on the tail beam. Internally telescopic, with quadrangular pyramid or conical coal-breaking teeth on the upper end of the second-stage coal discharge beam to realize coal discharge and coal-breaking functions; The lower part of the end of the type coal discharge beam can move with the expansion and contraction of the secondary coal discharge beam, and can be retracted by controlling the coal return jack to realize the coal breaking and coal loading functions. The invention is applied to fully mechanized caving mining of hard coal resources with a thickness greater than 8 meters, and has obvious effects in solving the problems of caving and recovery of top coal.

Description

technical field [0001] The invention relates to a top-coal caving mining equipment for extra-thick hard coal seams, in particular to a top-coal recovery device for a hydraulic support for top-coal caving, which belongs to the field of mining. Background technique [0002] There are mainly two mining methods for coal seams thicker than 8m: layered and fully mechanized caving mining, among which fully mechanized caving mining has the advantages of high production efficiency, less roadway excavation, and easy management, and has become the main development direction of coal seam mining thicker than 8m in my country. During the "Eleventh Five-Year Plan" period of our country, a hydraulic support for large mining height top coal caving was developed. The maximum height of mechanical mining is 5m, and the goal of mining 20m thick coal seams has been realized, and unprecedented results have been achieved. Achieving an annual output of more than 10 million tons provides a basis for ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D23/04
Inventor 王国法马端志李明忠马英佟友苏林军
Owner TIANDI SCI & TECH CO LTD
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