Analysis and design of the monitoring method for the shearer key parameters

Shearer starting and stopping state have been mainly monitored for the present underground electrical haulage shearer, thus the shearer working state cannot be monitored effectively. Aimed at the shearer general arrangement, the method monitoring shearer key parameters is advanced. According to the horizontal control shear model, the paper concludes the accurate formula of the mining height when shearers work in the non-horizontal condition; by the absolute encoder with the serial output, deduces the shearer relative working position to hydraulic supports; and amplifies the program to monitor the gas concentration, the motor current in the traction position, the cutting part and the high-speed shaft temperature. The method can realize the dynamic monitor for shearer external and internal parameters effectively, which provides the basis for the whole-plan decision of the remote monitoring system.