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Roof blasting mechanism for fully mechanized mining face

A fully-mechanized mining face and roof technology, applied in blasting and other directions, can solve problems such as inconvenient operation, easy loss, unreasonable arrangement position and angle of charging cartridges, etc., and achieve the effect of simple structure, safe and reliable use

Inactive Publication Date: 2016-08-17
CHINA COAL BEIJING COAL MINING MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the crushing mechanism used in the prior art is composed of simple cartridges and plugs. The location and angle of the cartridges are unreasonable, the blasting effect is not ideal, and the operation is inconvenient; The position is easily lost, thereby affecting safety; at the same time, the slag falling from the cartridge contaminates the bracket

Method used

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  • Roof blasting mechanism for fully mechanized mining face
  • Roof blasting mechanism for fully mechanized mining face
  • Roof blasting mechanism for fully mechanized mining face

Examples

Experimental program
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specific Embodiment

[0026] Such as Figure 1a , Figure 1b , figure 2 , Figure 3a , Figure 3b As shown, it includes a cartridge, a U-shaped platen and an L-shaped platen, a positioning pin assembly, a locking cover assembly, a cotter pin, etc.

[0027] The charge cartridge is inclined to the coal wall to form an angle of 75 degrees with the roof, and is connected to the roof beam. The upper surface of the cartridge is a bare hole in direct contact with the top plate, and the lower hole is closed and locked by U-shaped pressure plate, L-shaped pressure plate, positioning pin assembly, locking cover assembly, cotter pin, etc. The positioning pin assembly is fastened on the top beam, and assembled with the locking cover assembly before the fastening. The U-shaped pressing plate, the L-shaped pressing plate, and the cotter pin lock the locking cover assembly in different positions respectively. When charging, turn the locking cover assembly to the L-shaped pressure plate, and then turn it to ...

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Abstract

The invention discloses a fully-mechanized coal mining face roof blasting mechanism. The fully-mechanized coal mining face roof blasting mechanism comprises an explosive cartridge mounted on the top beam of a hydraulic support, the top end and the bottom end of the explosive cartridge are opened in the top board and the web board of the top beam, the web board at the lower-end opening of the explosive cartridge is provided with a locking cover. Being directly designed and mounted on the top beam in the height direction of the beam, the fully-mechanized coal mining face roof blasting mechanism is simple in structure and safe and reliable in usage.

Description

technical field [0001] The invention relates to a fully mechanized caving mining equipment for a coal seam, in particular to a blasting mechanism on the roof of a fully mechanized mining face. Background technique [0002] At present, with the improvement of the coal market, fully mechanized caving mining is basically replaced by fully mechanized caving mining for thick and extra-thick coal seams, which is safer and more efficient than layered mining. The applicable conditions for top-coal hardness, coal quality and dropability by fully mechanized caving mining are as follows: [0003] The Platts coefficient value of the coal seam should be less than 3, otherwise crushing measures should be taken; the thickness of a single layer of hard rock interlayer in the coal seam should not exceed 0.5m, otherwise crushing measures should be taken; the direct roof should have the characteristic of falling with the top coal, and its risk The drop height should not be less than 1.0 to 1....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F42D3/04F42D1/00
Inventor 裴玉兰
Owner CHINA COAL BEIJING COAL MINING MACHINERY