1、重庆升降平台传动轴的轴承连接紧固件松动，造成抖颤，应检查传动轴连接件的紧固情况，若发现松动，应拧紧。
Hangzhou freight elevator shaft bearing connection fasteners loose, causing tremors, check fastening driveshaft connection, if found loose, should be tightened.

2、升降平台传动轴的轴承损坏，引起抖颤，应检查曲臂式高空作业车传动轴的平衡块是否脱落，或脱落，应重新加平衡块并进行平衡试验，检查液压升降平台传动轴十字轴的轴承是否损坏，若十字轴轴承损坏，不仅导致抖颤而且还会产生异响，应更换十字轴轴承。
Hangzhou freight elevator shaft bearing damage, causing tremors, check crank shaft mounted aerial platforms block is off balance or off, should be re-added to the balance weight and balance test,check the hydraulic lifting platform cross shaft drive shaft bearings damage, if cross shaft bearing damage, not only to produce but also lead to tremors abnormal sound, replace the cross shaft bearings.

3、传动轴平衡块脱落，运转不平稳引起的抖颤，应检查中间支承情况，如支架是否松动，轴承是否损坏，必要时予以修复或更换。
Hangzhou freight elevator balance weight off the shaft, causing the tremors running smoothly, you should check the intermediate support cases, such as a stent is loose, if the bearing is damaged,be repaired or replaced if necessary.