Coal mining machine roller and hydraulic bracket face guard interference detecting device and method

Abstract

The invention discloses a coal mining machine roller and hydraulic bracket face guard interference detecting device and method. The device comprises a cross bar, middle part of which is rotatably connected to a rear end connecting plate, wherein the cross bar is fixedly arranged on a roller through a fixed base; the rear end connecting plate is fixedly provided with a front end connecting plate parallel to the rear end connecting plate in a direction towards the face guard; the front end connecting plate is fixedly provided with a camera; and the bottom of the rear end connecting plate is fixedly provided with a gravity ball. By utilizing the principle that the camera and the rear end connecting plate are always kept to be vertically parallel, a space parallel plane ranging principle is adopted to calculate a ratio of theoretical length of the lower edge segment of the face guard 3 to practical length to judge whether interference exists or not. The method can realize interference detection, provides basis for automatic and unmanned control on a coal mining machine and a hydraulic bracket of excavation-support equipment, guarantees excavation efficiency and economical efficiency ofcoal, and improves automatic and intelligent level of coal mining equipment.

Description

technical field [0001] The invention relates to the field of coal mining, in particular to a device and method for detecting interference between a shearer drum and a side guard of a hydraulic support. Background technique [0002] With the continuous improvement of the automation of mining equipment in the fully mechanized caving face of coal mines, the requirements for the operating status detection devices and technologies of mining equipment and support equipment are also continuously increasing. The operation interference detection of the traditional fully mechanized caving face with the shearer drum and the hydraulic support side guard is no longer applicable in terms of operability, automation, and safety. Safe and efficient fully mechanized caving face mining-support equipment operation interference testing requirements. At present, there are two major problems in the interference detection of mining-supporting equipment operations: one is that in the process of coo...

AI Technical Summary

Problems solved by technology

At present, there are two major problems in the interference detection of mining-supporting equipment operations: one is that in the process of cooperative coal mining of fully mechanized caving face mining and supporting equipment, the detection method of the shearer drum and the hydraulic support side plate is to rely on the shearer The operating experience of the driver worker and the hydraulic support worker judges the mutual positional relationship between the shearer drum and the hydraulic support side guard, and then judges whether the degree of interference between the two has not interfered or has interfered, which greatly increases the labor intensity and labor time of the workers. Reduced work efficiency

Second, no matter whether the worker relies on the operation experience to judge the interference or the existing interference detection method judges the interference, there is a situation that the mining-support equipment operation interference cannot be detected automatically in time. When the shearer walks to the current hydraulic support during the mining process Previously, when the shearer drum was about to cut to the side guard of the hydraulic support, sometimes the workers had a slow reaction time and could not quickly stop the walking of the shearer and the rotation of the drum or failed to retract the side guard of the hydraulic support in time, resulting in operation interference

At the same time, when the hydraulic support side guard is not retracted or the retraction does not meet the safety stroke, the high-torque rotating drum of the shearer will cut the hydraulic support side guard, and the light one will cause the shearer drum and the hydraulic support side guard In severe cases, it will cause serious production safety accidents

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