以EDW-150-2L型电牵引采煤机的摇臂机械故障为例,对其结构和传动特点进行了介绍,通过比较出厂时的振动信号和工作247d时的振动信号,可知其摇壁某些零部件可能出现了机械故障,利用包络解调谱法对所获取的故障信号进行处理,通过与故障特征频率的比较,确定了故障的具体部位,验证了该方法的有效性和优越性。为采煤机的检测提供了理论依据。 Take EDW-150-2L electric haulage shearer’s mechanical failure as an example, the structure and transmission characteristics are introduced. By comparing the vibration signal at the factory and the vibration signal at 247d, Some components may have mechanical failure, and the obtained fault signal is processed by envelope demodulation spectrum method. By comparing with the fault characteristic frequency, the specific location of the fault is confirmed, and the validity and superiority of the method are verified . It provides a theoretical basis for the detection of shearer.