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1 故障现象与控制原理1.1 故障 (1) 诊断床的前进后退指示灯不亮 ,床面不移动。1.2 故障 (2 ) 前进后退指示灯亮但床面不移动。该机由直流电机、同轴离合器驱动链条 ;床面与链条之间由电磁铁挂钩锁定 ;床尾有一个控制电磁铁挂钩开关 ;床面下有一条起固定作用也是检测信号
1 fault phenomenon and control principle 1.1 fault (1) diagnostic bed forward and back light does not shine, the bed does not move. 1.2 Fault (2) The forward and backward lights are on but the bed surface does not move. The machine is driven by a DC motor and a coaxial clutch; the bed and the chain are locked by an electromagnet hook; there is a control electromagnet hook switch at the end of the bed; a fixed function under the bedside is also a detection signal.