几个电厂的多台钢球磨煤机减速机或电机经常发生轴承损坏故障,通过对发生异常的磨煤机系统的振动情况进行现场测试,发现主要的振动频率为磨煤机小牙轮与大齿轮的啮合频率;另外,经常发生损坏的轴承其滚动体故障频率与该频率也比较接近或重合,说明造成齿轮啮合频率与滚动轴承故障频率相重合会降低滚动轴承的使用寿命。 Mill power plant several ball mill reducer or motor bearing failure often occur failure, by abnormal vibration of the coal mill system on-site testing and found that the main vibration frequency for the small cone pulverizer and large Gear meshing frequency; In addition, the bearing frequent damage to the rolling element fault frequency and the frequency is relatively close or coincident, indicating that the gear meshing frequency and rolling bearing failure frequency coincidence will reduce the service life of the rolling bearing.