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Five-drill air inlet and outlet type coal mining machine

A wind-in and out-flow, five-bit technology, which is applied in the direction of drill bits, earth square drilling, mechanical equipment, etc., can solve the problem of low cutting efficiency of three-bit drilling shearers, low adaptability to gas-containing coal seam mining, and limitations of shearer drilling. In order to improve the recovery rate of coal resources, reduce the energy consumption of mining, and achieve the effect of extensive practicability

Inactive Publication Date: 2012-08-15
CHINA UNIV OF MINING & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the difficulty of mining thin and extremely thin coal seams, my country introduced a three-bit shearer from Ukraine at the end of the last century. Compared with plows and drum shearers, it has significant advantages in mining thin and extremely thin coal seams: The extremely thin coal seam has been effectively mined, and the unmanned working face mining has been realized, the working environment of the workers has been improved, and the labor intensity of the workers has been reduced; however, the three-bit drilling shearer has low cutting efficiency and low coal transportation efficiency. , Low adaptability to gas-containing coal seam mining and time-consuming drill pipe connection; the transmission box of the three-bit drilling shearer is large in size and low in coal passing efficiency, which makes the drill bit stalled, which in turn leads to the deviation of the drilling tool and limits coal mining. Drilling depth of the machine

Method used

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  • Five-drill air inlet and outlet type coal mining machine
  • Five-drill air inlet and outlet type coal mining machine
  • Five-drill air inlet and outlet type coal mining machine

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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 , figure 2 As shown, the air drilling shearer with five drill bits in and out of the present invention is mainly composed of a bracket 1, a first hydraulic motor 2, a ventilator 3, a hydraulic propulsion cylinder 4, a height adjustment device 5, a lateral transmission drill rod 6, and a blower fan 7. Planetary mechanism 8, bevel gear transmission box 9, short auger bit 10, long auger bit 11, exhaust fan 12, left ventilation drill rod 13, moving frame 14, bearing seat 15, coupling 16, second hydraulic motor 17 , the middle transmission drill rod 18 and the right ventilation drill rod 19 constitute. The lower part of the bracket 1 is provided with a height-adjusting device 5, and the height-adjusting device 5 realizes the height adjustment of the bracket 1 through a hydraulic cylinder. The bracket 1 is provided with a mobile ...

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PUM

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Abstract

The invention relates to a five-drill air inlet and outlet type coal mining machine, applicable to mining of a coal bed with pitch of 0-25 degrees, thin and extremely thin coal beds containing gas and a liberation coal bed. The five-drill air inlet and outlet type coal mining machine mainly comprises a hydraulic motor, a bracket, a thrust cylinder, a transmission case and a spiral bit. Five drills are transversely arranged, thus mining efficiency of the coal mining machine is improved; and three intermediate drills are arranged in advance, and mining energy consumption is reduced by utilizing a crisp pressing effect of the coal bed. A machine set is provided with a blast fan and an induced-draft fan to realize ventilation of a working surface, and gas concentration is diluted, thus the machine set can mine a high-gas coal bed. A transmission drill rod and a ventilation drill rod convey coal at the same time, thus coal conveying efficiency of the coal mining machine is greatly improved. The transmission case adopts a bevel gear driving manner, a transmission case body is of a sectional type structure, volume of the transmission case is reduced, and coal passing efficiency of the transmission case is improved, thus the drills are avoided from being blocked and turning. The machine set can realize ventilation of a mining working surface, efficient mining of high-gas thin and extremely thin coal beds is realized, and the machine set has high working stability, reasonable structural arrangement, strong component interchangeability and easiness in maintenance.

Description

technical field [0001] The invention relates to a five-bit in-and-out air drill shearer, especially suitable for coal seam inclination Mining of thin and extremely thin coal seams and high gassy coal seams that liberate coal seams. Background technique [0002] my country is the largest coal producer and consumer in the world. With the economic growth, the demand for coal is increasing. Thin and extremely thin coal seams are widely distributed and have large reserves. The proven reserves account for as much as 20% of the total coal reserves, but the mining volume only accounts for about 8% of the total output, which is far lower than the proportion of its reserves. All coal mining enterprises are facing the problem of mining thin and extremely thin coal seams, especially the reserves of medium-thick coal seams are decreasing day by day. The development of mining technology for thin and extremely thin coal seams is extremely important, and its mining has becom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C27/22E21B10/44F16H1/28
Inventor 刘送永江红祥崔新霞付林谭长均刘增辉刘晓辉
Owner CHINA UNIV OF MINING & TECH
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