Automatic control system and automatic control method used for protecting face guard of coal mine underground fully mechanized coal face support

Abstract

The invention relates to an automatic control system and an automatic control method used for protecting a face guard of a coal mine underground fully mechanized coal face support. The automatic control system comprises a hydraulic support, a support controller, a proximity switch, a pressure sensor and a stroke sensor, wherein the hydraulic support comprises a face guard; the proximity switch is arranged on the top beam of the hydraulic support, the pressure sensor is arranged in the cylinder of the hydraulic support, the cylinder is used for controlling the face guard, the stroke sensor is arranged on the face guard, the support controller is arranged on the hydraulic support, and the support controller is used for controlling action of the hydraulic support; the proximity switch, the pressure sensor and the stroke sensor are used for detecting position and state information of the hydraulic support, the support controller communicates with the proximity switch, the pressure sensor and the stroke sensor and controls the action of the face guard of the hydraulic support according to the position and state information of the hydraulic support.

Description

technical field [0001] The invention relates to an automatic control system and an automatic control method for a hydraulic support side guard of a coal mine fully mechanized mining face, in particular to an automatic control system and an automatic control method for protecting a hydraulic support side guard. Background technique [0002] The fully mechanized mining face with large mining height is widely used in my country, and it is considered as one of the main coal mining methods for safe and efficient mining of thick coal seams in my country because of its high recovery rate, good safety, and large production capacity. However, in the high-thick coal seam working face, there is currently no accurate way to judge the extension and retraction status of the side guards supporting the coal wall. When the shearer and the support are prone to collision accidents; in the large mining height working face, with the increase of the working face mining height, the coal wall is ea...

AI Technical Summary

Problems solved by technology

However, in the high-thick coal seam working face, there is currently no accurate way to judge the extension and retraction status of the side guards supporting the coal wall. When the shearer and the support are prone to collision accidents; in the large mining height working face, with the increase of the working face mining height, the coal wall is easy to collapse large coal blocks, which not only easily causes equipment failure, but also easily damages the working surface. personnel; in the working face with large mining height, due to the high height of the coal seam, only the first-level side protection board cannot meet the support requirements of the coal wall, so the supports of the large mining height working face are generally designed with multi-level side protection boards. There will be interference between the actions of the side panels, and the start time and action sequence of the multi-level side protection actions must be controlled separately. The existing large mining height work faces multi-level side protection. The control is time-controlled, and this control method cannot be accurately judged. The action state of all levels of protection is prone to multi-level protection interference accidents. For example, when the action of the third-level protection is not in place, the first-level protection will cut off the hydraulic pipeline arranged on the top beam of the support, resulting in work Accidents such as surface leakage

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