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Large mining height shield type low caving coal hydraulic support

A technology of supporting cover type and hydraulic support, which is applied in the direction of mine roof support, mining equipment, earth square drilling and mining, etc., and can solve problems such as the limitation of hydraulic support

Inactive Publication Date: 2009-12-02
CHINA COAL BEIJING COAL MINING MACHINERY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main reason is that it is limited by the hydraulic support of the supporting equipment

Method used

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  • Large mining height shield type low caving coal hydraulic support
  • Large mining height shield type low caving coal hydraulic support

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specific Embodiment

[0020] Such as figure 1 , figure 2 As shown, it is mainly composed of side protection mechanism 1, small four-bar linkage mechanism 2, front beam mechanism 3, top beam 4, column 5, top beam side guard plate 6, cover beam 7, cover beam side guard plate 8, front connecting rod 9. Rear connecting rod 10, tail beam 11, board jack 12, board 13, tail beam jack 15, base 16, rear sliding device 17, pushing mechanism 18, bottom lifting mechanism 19, etc.

[0021] The top beam 4 and the base 16 are hingedly supported by four columns 5; the one-stage or two-stage side protection mechanism 1 is hinged at the front end of the top beam 4 (or the front beam mechanism 3) through the small four-bar linkage mechanism 2; the top beam 4 The rear end of the rear end is hinged with the cover beam 7; the front link 9 and the rear link 10 are hinged between the cover beam 7 and the base 16 to form a stable four-bar linkage;

[0022] The rear end of the cover beam 7 is hinged to the coal discharge ...

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Abstract

The invention discloses a large mining height shield type low caving coal hydraulic support. The support comprises a base, a top beam and a shielding beam, wherein an upright post is arranged between the top beam and the base; the upright post is a double telescopic upright post; the inner diameter of the large cylinder body of the upright post is more than or equal to 500mm; and the expanded height of the upright post is more than or equal to 4m. A push device is arranged in the middle of the base, the front end of the push device is connected with a front scraper conveyor; a pull back sliding device is arranged outside the base; and the rear end of the pull back sliding device is connected with a back scraper conveyor. A coal feed mechanism comprises a tail beam and a tail beam jack; a flashboard and a flashboard jack are arranged in the tail beam, and the end part of the flashboard is provided with a conical tooth for crushing range coal; and the upper oscillation angle of the tail beam is between 10 and 15 degrees, while the lower oscillation angle is between 40 and 45 degrees. The support can be applied to primary top-coal caving mining for super high coal seam with support height of over 4 meters, thickness of a coal placement layer of over 16 meters and good top-coal caving performance, and improve the production efficiency of a sub-level caving working face and the resource recovery rate.

Description

technical field [0001] The invention relates to a support device for coal mine mining, in particular to a large mining height support shielding type low-position top coal caving hydraulic support. Background technique [0002] In coal mine mining, the hydraulic caving support for top coal caving in fully mechanized working faces has developed from the initial high level top coal caving and middle level top coal caving to the ordinary low level top coal caving that is commonly used in the mining of 6-10 thick coal seams. Coal hydraulic support. During this development process, the main change is the position of the coal discharge port, which is first arranged on the top beam (high-level top-coal caving), then arranged on the cover beam (middle-level top-coal caving), and finally arranged at the rear of the cover beam hinged The bottom of the tail boom plate (low top-coal caving). [0003] In the development of the prior art, for the average coal seam thickness of 6 to 10 me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D23/04
Inventor 刘国柱王建钱建钢孟秋平杨晶李炳涛仲丛和包冬生张守祥
Owner CHINA COAL BEIJING COAL MINING MACHINERY
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