Automatic control system for pseudo-inclined fully mechanized mining face

Abstract

An automatic control system for a pseudo-inclined fully mechanized mining face comprises scrapper conveyers, hydraulic supports, support controllers, laser position sensors, laser range finders, angle sensors and inclination regulating jacks, each scrapper conveyer is formed by sequential connection of a plurality of chutes, every chute is connected with a pushing rod of the corresponding hydraulic support, the laser position sensors, the laser range finders and the angle sensors are connected with the support controllers via connectors, and one end of each inclination regulating jack is fixed on the adjacent hydraulic support in the gliding direction of the corresponding scrapper conveyer while the other end of the same is fixed on the chute connected with the local hydraulic support. The automatic control system for the pseudo-inclined fully mechanized mining face has the advantages that the problems of positioning and posture control of the hydraulic supports in the process of moving are solved via laser positioning signals, the vertical relation among the hydraulic supports and the scrapper conveyers are kept, component force, on the scrapper conveyers, generated by the hydraulic supports in the process of moving can be counteracted by weight components generated by the scrapper conveyers and the hydraulic supports, and thereby the problem of gliding up and down of workface equipment is solved.

Description

technical field [0001] The invention relates to an automatic control system for pseudo-inclination of a fully mechanized mining face, in particular to a method and a control system for solving the problems of straightening of working face equipment and upper and lower strings on a working face with an inclination angle. Background technique [0002] The fully mechanized mining face is formed by multiple hydraulic supports arranged in sequence on the working face to realize the support for the roof of the working face and the migration of the scraper conveyor. The hydraulic support of the working face is a floating system weakly constrained by the scraper conveyor. During the moving process of the working face, because the hydraulic support and the scraper conveyor are connected by pin lugs, there is a gap, which leads to certain errors in the moving process. In addition, due to the The accuracy of the stroke sensor that controls the movement of the hydraulic support is not h...

AI Technical Summary

Problems solved by technology

In the working face equipped with electro-hydraulic control system, due to the accumulation of sensor error and pin lug error in the control system, as well as the feedback delay of the hydraulic system, most of the equipment straightening operations in the fully mechanized mining face still use manual electronic control operation as the main means. The sliding of the equipment on the large-inclination working face requires the operator to make specific judgments according to the site conditions and then manually control it. In the prior art, the control of the straightness is basically determined by the travel of the travel sensor. There is no set of calibration. Once the stroke sensor fails, the straightness of each hydraulic support and scraper conveyor will deviate greatly, which will seriously affect the normal mining work of the working face

There is no relevant electronic control system solution and supporting products for the upper string to slide down. If the equipment slides down seriously, it will easily cause serious extrusion. It may cause the conveyor to push the reloader to the outer coal wall of the transportation lane, resulting in the blockage of the safety exit at the end, and also causing underground accidents.

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