Automatic height adjustment control method of coal mining machine in fully mechanized mining face based on current monitoring

Abstract

The invention discloses a fully mechanized coal mining face coal cutter automatic height-adjustment control method based on current monitoring. The fully mechanized coal mining face coal cutter automatic height-adjustment control method based on current monitoring includes the steps that firstly, a coal cutter mining work condition monitoring system is built, specifically, the built coal cutter mining work condition monitoring system comprises a sound intensity detection device, a lower monitoring device installed on a coal cutter and an upper monitoring machine arranged in an upper monitoring room; and secondly, automatic height-adjustment control over the coal cutter is carried out, specifically, the coal cutter is used for mining a coal seam to be mined in the work face advancing direction from back to front; and when any mining position of a current work face is mined, the coal cutter mining work condition monitoring system is used for carrying out coal cutter automatic height-adjustment control, and the process is as follows: information detection and synchronous unloading of cutting current, traction current and sound intensity of the coal cutter, cutting work condition diagnosis, coal cutter height-adjustment judgment and cutting height adjustment of the coal cutter. The fully mechanized coal mining face coal cutter automatic height-adjustment control method based on current monitoring is simple in step, reasonable in design, easy and convenient to realize, good in use effect and capable of carrying out accurate control over coal cutter height adjustment automatically in real time.

Description

technical field [0001] The invention belongs to the technical field of coal mining, and in particular relates to an automatic height adjustment control method of a fully mechanized coal mining face based on current monitoring. Background technique [0002] In the field of prior art, the control of shearers in fully mechanized working faces mostly adopts manual on-site control. Due to the harsh and complex working environment on site, field operators often cannot keep abreast of the operating conditions of the shearer. The controls have some lag and inaccuracy. At present, most of the relatively mature fully mechanized mining face monitoring systems can only monitor the underground working conditions, and cannot perform real-time control, let alone make judgments and give certain control strategies for different working conditions. The fully mechanized mining face is called the comprehensive mechanized mining face, which refers to the mining face with hydraulic supports, hig...

AI Technical Summary

Problems solved by technology

During the mining process of the fully mechanized mining face, the control of the cutting height of the shearer (height adjustment of the shearer for short) is very important. damage, malfunction or safety incident

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