Working surface hydraulic support with array proximity sensing devices and linearity control method of hydraulic support

Abstract

A working surface hydraulic support with array proximity sensing devices comprises a top beam and a support controller. A tilt angle sensor is arranged on the top beam, two sides of the top beam are respectively provided with one array proximity sensing device, the two array proximity sensing devices are symmetrically arranged along the length direction of the top beam, and the support controller is electrically connected with the tilt angle sensor and the array proximity sensing devices. The working surface hydraulic support has the advantages that the support moving stroke of the hydraulic support is controlled according to the positional relation between each array proximity sensing device and the adjacent hydraulic support, the moved hydraulic support is controlled as a hydraulic support moving marker post, the working surface hydraulic support is simple in system structure, low in cost, high in reliability, convenient to mount, maintain and use and the like, the support falling height in the support moving process can be effectively controlled, a system is safer, the whole support moving process includes an extensive control stage and a fine control stage, and the control system is high in control efficiency and precision.

Description

technical field [0001] The invention relates to a working face hydraulic support, in particular to a hydraulic support provided with an array type proximity sensing device and a method for controlling the straightness of the support using the hydraulic support. Background technique [0002] The fully mechanized mining face is composed of shearer, scraper conveyor, hydraulic support and other equipment. The scraper conveyor is composed of a section of a chute connected. The connecting hole of the scraper conveyor and the hydraulic support push rod connection head are fixed and connected by pins, and the telescopic action of the jack is pushed through the hydraulic support on the working surface. Realistic scraper conveyor of the mobile. Multiple hydraulic supports are arranged in sequence on the working surface, and their respective positions are constrained by the scraper conveyor on the working surface, but their mutual positions are not constrained, which is a semi-floati...

AI Technical Summary

Problems solved by technology

However, since there is no mutual constraint between the hydraulic supports on the working face, it is difficult to realize the straightness control of the hydraulic supports

Moreover, in the prior art, the control of straightness basically depends on the travel distance of the stroke sensor to determine, without a set of calibration feedback mechanism, once the stroke sensor fails, the straightness of each hydraulic support and scraper conveyor will be greatly deviated In severe cases, underground accidents will be caused, which will have a serious impact on the normal mining work of the working face.

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