在矿山的架线电机车运输中，司机停车时未切断电源即离去，因此，经常造成电机车撞人、颠覆和列车掉道等事故。为此，很多单位在机车上安装司机离位自动断电装置，取得了一些成效。但这些电动的或电控的断电装置，在井下架线式电机车上使用存在一些弊端。北京矿务局廖彦生同志 In the mine of overhead locomotive transport, the driver did not cut off the power when the vehicle is leaving, therefore, often causing the motor vehicle hit, subversion and train off the road and other accidents. To this end, many units installed in the locomotive driver off automatic power device, and achieved some results. However, the use of these electric or electronically controlled power-off devices in a downhole overhead locomotive has some disadvantages. Beijing Mining Bureau Liao Yansheng comrades