On the Improved Design of Coal Mining Machine Spiral Drum and Its Performance Analysis
Spiral drum is an important working part of coal mining machine,and the finite element model of the cutting coal wall of the spiral drum of MG2×80(55)/360(260)-WDK coal mining machine was established by using Pro/E and EDEM software.It was found that the cutting torque of the spiral drum was 14,634 N·m,the productivity was 58.1 kg/s,and the specific energy consumption of the cutting ratio was 0.770 7 kW·h/m3.Four uniformly distributed 0.7-fold cut-off teeth were added to the end disk part of the spiral drum to improve the comprehensive performance of the spiral drum.The performance of the improved spiral drum was analyzed,and the values of the above three technical indexes were found to be 15,384 N·m,66 kg/s,and 0.654 9 kW·h/m3,respectively.The improved design of the spiral drum was applied to the coal mining machine,and the cumulative use time was 6 months,and it was found that the drum had a good application effect,and the economic benefits were significant.
coal mining machinespiral drumcutting torquecutting ratio energy consumption
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