一、概况在工矿企业中,有些重要生产环节,经常需要同时配置多台同类设备投入运行,并将其中一台作为备用(为不间断供水场所配置的水泵、矿井下的风机及其它重要设备)。运行当中的设备和备用设备的台号要求不固定,否则作为备用的设备就可能因长期闲置不用而损坏。失去备用的意义。而运行中的设备若不切换,由于长期工作得不到休整维修也易使设备损坏而形成故障。为此,在正常运行中,需要定期的切换设备台号,使各台设备自动轮流投 I. Overview In the industrial and mining enterprises, some important production processes often require the simultaneous configuration of multiple similar equipment in operation and use one of them as a backup (for uninterrupted water supply pumps, underground mine fans and other important equipment) . The number of the equipment in operation and the number of spare equipment need not be fixed, otherwise the spare equipment may be damaged due to being idle for a long time. Lose the meaning of spare. If the equipment does not switch in operation, due to long-term work without rest maintenance is also easy to make the equipment damaged and the formation of failure. To this end, in normal operation, the need to regularly switch equipment station number, so that each device automatically turns the vote