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Caving coal hydraulic support with large swing beam structure

A hydraulic support and top-coal caving technology, which is applied in mine roof support, mining equipment, earthwork drilling, etc., can solve the problem of low top-coal recovery rate, achieve large coal discharge space, high coal discharge point, and safe working space Effect

Inactive Publication Date: 2013-01-30
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of low recovery rate of top-coal caving in thin coal seams and extremely close coal seams, improve the existing hydraulic caving support for top-coal caving, and design a hydraulic caving support for top-coal caving with a large swing beam structure

Method used

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  • Caving coal hydraulic support with large swing beam structure
  • Caving coal hydraulic support with large swing beam structure

Examples

Experimental program
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Effect test

Embodiment 1

[0011] Embodiment one: if figure 1 As shown, a large swing beam structure top coal hydraulic support mainly consists of top beam 3, telescopic beam 1, cover beam 6, side guard plate 2, front connecting rod 7, rear connecting rod 8, base 9, and pushing mechanism 11 , a column 10, a jack and an operating valve; the specific structure is that the top beam 3 and the base 9 are connected through the column 10, the front end of the top beam 3 is provided with a telescopic beam 1, and the rear part of the top beam 3 is provided with a cover beam 6, The shield beam 6 is connected with the base 9 through the front connecting rod 7 and the rear connecting rod 8, and the base 9 is provided with a push mechanism 11, which is composed of a push cylinder 12 and a push rod 13, and the push mechanism 11 adopts an inverted structure, The push cylinder 12 is hinged with the base 9, the rear end of the push rod 13 is hinged with the push rod 13 of the push cylinder 12, and the hydraulic support ...

Embodiment 2

[0012] Embodiment two: if figure 2 As shown, a large swing beam structure top coal caving hydraulic support, the basic structure is basically the same as that of Embodiment 1, and will not be described again here, the difference is that the oil cylinder of the swing beam jack 16 is hinged on the base 9 .

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Abstract

The invention discloses a caving coal hydraulic support with a large swing beam structure and is improvement of an existing caving coal hydraulic support. The caving coal hydraulic support with the large swing beam structure is mainly composed of a top beam, a telescopic beam, a shield beam, a side protecting plate, a connecting rod, a base, a thrust mechanism, a column, jacks and an operating valve. The caving coal hydraulic support with the large swing beam structure further comprises a large swing beam, the lower side of the large swing beam is hinged to a swing beam jack, the front end of the large swing beam is hinged to a hinged hole above the rear portion of the top beam, and an oil cylinder of the swing beam jack is hinged to a hinged base below the rear portion of the top beam or the base so as to form a reverse four-linkage structure. Furthermore, an inserting plate and an inserting plate jack are arranged in the large swing beam. The caving coal hydraulic support with the large swing beam structure has the advantages of being large in coal placing window and high in coal placing point, facilitating discharge of large top coal, and facilitating improvement of top coal recovery rate. When the swing beam jack is supported on the base, carrying capacity of the large swing beam can be increased, and lowering of an adjacent coal layer of the nearest coal layer can be performed conveniently.

Description

technical field [0001] The invention relates to a support device for fully mechanized coal mining face. Background technique [0002] Support equipment is an indispensable key equipment for the mechanization of fully mechanized mining, which is related to the safety of personnel in the working face, the normal operation of machines and the improvement of miners' safe production conditions. The current support equipment for fully mechanized mining face mainly adopts caving coal hydraulic support, which is composed of top beam, telescopic beam, cover beam, side guard plate, tail beam, connecting rod, base, pushing mechanism, column, jack and operation The rear part of the top beam is connected with the front and rear connecting rods and the base through the cover beam. There is a moving mechanism inside the base. The tail beam is connected to the cover beam, and the tail beam is used for top coal caving. In the mining of thin coal seams, it is necessary to lower the gangue, a...

Claims

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Application Information

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IPC IPC(8): E21D23/04E21D23/16
Inventor 曹连民肖兴媛张忠伟苏国秀王兴华赵文明
Owner SHANDONG UNIV OF SCI & TECH
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