矿山开采中,风机、水泵类设备在矿山设备的装机容量中占了很大比重,据统计,装机容量占到了30%￣60%。由于矿山开采的特殊性,为保证设备在工作面延伸、工作条件变化时都能正常工作,设备容量往往都是按最大负荷考虑的,因而在相当长一段时间里,设备都是处于大马拉小车状态,设备运 Mining, fans, pumps equipment in mining equipment installed capacity accounted for a large proportion, according to statistics, installed capacity accounted for 30% ~ 60%. Due to the particularity of the mining, in order to ensure the extension of the working surface of the equipment, the working conditions are changed and the equipment can work normally. The capacity of the equipment is usually considered according to the maximum load. Therefore, for a long period of time, the equipment is in the marathon Car status, equipment shipped