Method and device for position and posture monitoring of rocker arms of coal mining machine on basis of fiber grating

Abstract

The invention belongs to the field of operating condition monitoring of mine machinery and relates to a method and a system for position and posture monitoring of rocker arms of a coal mining machine on the basis of fiber grating. The system comprises three subsystems including a data analysis subsystem, a position and posture data transmission subsystem and a position and posture data sensing acquisition subsystem. The data analysis subsystem is mounted in a ground monitoring room and comprises a monitoring computer, fiber grating demodulation equipment and a power supply; the position and posture data transmission subsystem consists of mining transmission optical fibers and optical fiber junction boxes; the position and posture data sensing acquisition subsystem comprises two groups of fiber grating position and posture monitoring sensors for the rocker arms of the coal mining machine, and the monitoring sensors are mounted at piston rods of front and rear rocker arm hydraulic cylinders of the coal mining machine. The system is simple, feasible, stable and high in precision, real-time online position-posture dynamic continuous monitoring of the rocker arms of the coal mining machine can be realized, and position and posture conditions of the rocker arms of the coal mining machine can be acquired accurately. The method and the system are significant to monitoring of the position and posture conditions of the rocker arms of the coal mining machine.

Description

technical field [0001] The invention relates to a method for monitoring the position and posture of a rocker arm of a coal mining machine, which belongs to the field of monitoring the working conditions of mine machinery, and is especially suitable for a device and method for monitoring the position and posture of a rocker arm of a coal mining machine based on an optical fiber grating. Background technique [0002] In coal mine production, the shearer is the key equipment in the comprehensive mechanized mining of coal. Affected by geological activities, the thickness of the coal seam often has a large spatial difference. The shearer drum needs to be continuously adjusted along the height of the coal-rock interface of the working face. , to obtain the maximum recovery rate, and try to avoid cutting the rock. The rocker arm pose monitoring of the shearer is to monitor the rocker arm pose of the shearer when the shearer is mining, so as to adjust the height of the front and rea...

AI Technical Summary

Problems solved by technology

These monitoring methods basically use on-site real-time acquisition of signals. Their obvious disadvantages are that they are greatly interfered by the harsh environmental conditions of the coal mining site, the signal acquisition is unstable, and the reliability of the recognition results is low. Generally unsatisfactory

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