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Coal-dressing hydraulic bracket for caving coal working face

A technology of hydraulic support and working face, which is applied in the direction of mine roof support, solid separation, filter and screen, etc., which can solve the problems of low coal preparation efficiency, short operating life and high investment cost, so as to increase coal mining efficiency and save coal transportation cost , the effect of reducing the cost

Active Publication Date: 2012-10-03
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the current sorting equipment is used in coal mines, the main defect is that it is limited by the conditions and environments of coal mines, and there are problems such as low coal preparation efficiency, poor separation effect, high investment cost, and short operating life.

Method used

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  • Coal-dressing hydraulic bracket for caving coal working face
  • Coal-dressing hydraulic bracket for caving coal working face

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Experimental program
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Embodiment Construction

[0012] An embodiment of the present invention will be further described below in conjunction with accompanying drawing:

[0013] Such as figure 1 As shown, the coal preparation hydraulic support of the coal caving working face of the present invention comprises a top beam 3, a front beam 2 connected to the top beam 3, the front end of the front beam 2 is connected with a side guard 1, and the bottom of the front beam 2 is provided with a mining The coal machine 9 and the front scraper conveyor 10, the front column 11 and the rear column 13 are arranged under the top beam 3, the front column 11 and the rear column 13 are symmetrically fixed on the bottom plate 12, and the rear part of the top beam 3 is connected with a brace Shield beam 4, the lower part of shield beam 4 is diagonally braced with a link mechanism 16 fixed on the base plate 12, and the shield beam 4 is supported by link mechanism 16 to fix the coal discharge height. The rear end of the cover beam 4 is provi...

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Abstract

The invention discloses a coal-dressing hydraulic bracket for a caving coal working surface. The coal-dressing hydraulic bracket comprises a face guard, a front beam, a top beam, an upright post, a connecting rod mechanism, a caving shield, a coal caving tail beam, a coal caving plate, a motor, a vibration screen, a belt conveyor, a rear scraper conveyor, a gangue transportation warehouse, a baffle plate and a base, wherein the connecting rod mechanism is supported on the lower end of the caving shield; the scraper conveyor and the gangue transportation warehouse are arranged on the base; a gangue vibration motor is arranged on the caving shield, so that coal blocks drop through a vibration mesh below; a gangue discharge gate is controlled to be opened or closed so as to separate the gangues to the gangue transportation warehouse at the lower part through a side gangue sieve, so that the gangues and coal blocks are preliminarily separated underground; according to the differences in elastic modulus and hardness of the coals and gangues, the coals and the gangues are secondarily separated by an elastic plate. The coal-dressing hydraulic bracket has a simple structure and the advantages of reliable operation, practicality and convenience, easiness in underground application and the like, and can remarkably reduce the underground coal transportation cost.

Description

technical field [0001] The invention relates to a hydraulic support for coal preparation in a top-coal caving working face, in particular to a hydraulic support suitable for simultaneous coal mining and gangue discharge in a mine comprehensive mechanized top-coal caving working face. technical background [0002] For coal production, it is the only way to achieve clean coal production and green production to realize the separation of underground coal and gangue and keep the gangue out of the well. Since the 1960s, coal-producing countries in the world have been exploring surface coal and gangue separation technology and equipment, research on coal gangue treatment and comprehensive utilization, and have made great achievements. Technology is rarely studied. With the increasing degree of mechanization of coal mining and the mining of gangue coal seams, the amount of large gangue mixed in coal is gradually increasing. Reducing the gangue content of raw coal underground can im...

Claims

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Application Information

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IPC IPC(8): E21D23/04B07B1/28
Inventor 马占国张帆赵国贞管春峰龚鹏马云靖张秀全
Owner CHINA UNIV OF MINING & TECH
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