机、泵轴对中的评估与调整

Shaft Alignment of Rotorcraft and Pump

轴系不对中是导致机械设备故障的主要原因。电机与泵的轴不对中又可以分为3种情况:平行不对中、偏角不对中和平行偏角不对中。文中利用机械故障诊断的方法,提取联轴器的径向振动信号,对信号进行处理和分析,以判断电机与泵轴对中的情况,提供对中调整的依据。利用频谱仪提取的频谱图,对照调整良好的频谱图,可以评估轴系对中的情况。

Machine faults are usually induced by shaft misalignment. The shaft misalignment of drive train has three types： parallel misalignment, obliquity misalignment, and parallel obliquity misalignment. In this paper, mechanical faults diagnostic method is used to analyze the signals of sensor monitoring the radial vibration of the coupling of power transmission. The result, the amplitude-frequency characteristics get form the frequency spectrum instrument, comparing to the ones of good alignment condition, can indicate whether there is misalignment.