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Novel coal cutter hydropower blocking device

A shearer, hydropower technology, applied in mining devices, safety devices, slitting machines, etc., can solve problems such as clogging of shearer nozzles, and achieve the effect of reliable operation and simple structure

Pending Publication Date: 2020-09-15
兖矿能源集团股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is how to timely detect the clogging of the shearer nozzle and stop the anhydrous coal cutting failure caused by it in time, and provide a new type of hydraulic locking device for the shearer

Method used

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  • Novel coal cutter hydropower blocking device
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Experimental program
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Effect test

Embodiment approach 1

[0013] Implementation mode one: if figure 1 , 2 As shown, the hydraulic locking device of the new shearer includes a high-pressure water pipe 1, a pressure switch 2, an electrical control box 3 for the shearer, a tee with a different diameter 4, a high-pressure hose 5 and a nozzle 6, and the tee with a different diameter 4 includes Two large interfaces and a small interface, the two large interfaces are opposite to each other, the small interface is perpendicular to the opposite large interface, and is in a T shape. The switch 2 includes a pressure introduction joint and a normally open switch, wherein the pressure introduction joint is connected with the small interface of the different diameter tee, and the electric control box 3 of the coal mining machine is equipped with a PLC module 7 .

[0014] Pressure switch 2 refers to the mechanical pressure switch in CN 210403602 U or the piston type pressure switch in CN 204457835 U, omitted.

[0015] The pressure switch 2 and th...

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Abstract

The invention relates to a novel coal cutter hydropower blocking device. In order to find out and handle with blockage of a nozzle of a coal cutter in time, the novel coal cutter hydropower blocking device comprises a high-pressure water pipe, a pressure switch, a coal cutter electric control box and a nozzle, and further comprises a counteracting induction mechanism. The counteracting induction mechanism comprises a swing rod, a reed switch normally-open switch, a front limiting column and a rear limiting column. The lower end of the swing rod is fixed to a fixed shaft through a bearing. Thenozzle is fixed to the upper portion of the swing rod. A short screw is welded to the front side of the swing rod and sleeved with a balance weight self-locking nut. The direction of a torsional moment of the balance weight self-locking nut is opposite to the direction of a torsional moment generated by counteracting force of water mist during water spraying of the nozzle. The reed switch normally-open switch is fixed to the upper side of the swing rod and connected with a PLC module through the coal cutter electric control box. The front limiting column and the rear limiting column are arranged on the two sides of the swing rod correspondingly. The novel coal cutter hydropower blocking device can effectively reduce water-free coal mining accidents and is suitable for an underground coal mine fully mechanized face.

Description

technical field [0001] The invention relates to a novel coal mining machine hydroelectric locking device. Background technique [0002] Coal mining machines in the coal mining face produce large coal dust when cutting coal. The flying coal dust is not conducive to the safe production of the mine, and also poses a great hazard to the health of the on-site workers. Therefore, in the production process, it is necessary to ensure efficient dust removal. In order to achieve this purpose, internal and external spray dust suppression systems and secondary negative pressure dust suppression devices are usually installed on coal shearers. The water supply pressure is generally around 7MPa, and the water supply flow rate is 320L / min. However, in the actual production process, the phenomenon of cutting coal without water often occurs. [0003] The Chinese invention patent with the publication number: CN 108266220B and the publication date of 2019.05.28 discloses a spray linkage integr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C35/22E21C35/00E21F5/04E21F17/18E21F17/00
CPCE21C35/22E21C35/00E21F5/04E21F17/18E21F17/00
Inventor 姜海峰罗广利张兴雨宗瑞申张宝军高兴亮马海涛李惠
Owner 兖矿能源集团股份有限公司
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