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1.故障现象1台工作了980h的某型道路综合养护车,操作人员在打开滚筒加热开关时,加热火焰只维持5s时间即自行熄灭,由此造成该道路综合养护车无法正常使用。2.工作原理道路综合养护车采用液化气体对该车上的滚筒进行加热,再通过该滚筒对回收的旧沥青料加热。该型道路综合养护车点火控制原理如附图所示。当按下滚筒加热开关HS时,点火控制器开始工作。点火控制器输出端3号端子将220V交流电输出给点火高压包zT,同时5号端子也将220V交流电输出给燃气电磁阀V使其打开。
1. Symptom A working 980h road-type integrated maintenance vehicle, the operator opens the drum heating switch, the heating flame only 5s time to extinguish itself, resulting in the road can not be used normal maintenance vehicle. 2.Working principle Road integrated maintenance car uses liquefied gas to heat the drum on the car and then heat the recovered old asphalt through the drum. This type of road maintenance truck ignition control principle as shown in the figure. When the roller heat switch HS is pressed, the ignition controller starts to work. Ignition controller output terminal 3 220V AC output to the ignition coil zT, while the 5th terminal will also be 220V AC output to the gas solenoid valve V to open.