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北京矿务局大安山煤矿九二○水平井下两吨翻笼近年实现了自动化。此自动控制系统经半年来运行良好。操作人员由原来每班6～7人减到每班2～3人。而且
In recent years, automation of Beijing Mine Bureau Daanshan Coal Mine 9 920 horizontal two-ton dump cage has been realized. This automatic control system has worked well for six months. Operators from the original class 6 to 7 reduced to 2 to 3 classes per class. and