残疾人升降机进行作业的时候，会出现螺栓出现松动的现象，给机器设备带来很大的安全的隐患，这到底是怎么回事呢？
1、残疾人升降机的螺栓，它通常是会有一定的预紧力，但是在实际安装过程中，不可能达到规定的预紧力要求，在这种情况下，只要有其他力的作用，螺栓就很容易松动了。
Fixed lift bolts, it is usually there will be some preload, but in the actual installation process, it is impossible to achieve the requirements set preload, in this case, as long as there are other force, the bolt is very easy to loose.
2、残疾人升降机在上升、旋转过程中，螺栓的受力会因此而发生变化，一旦这种变化超过一定范围时，就有可能使得螺栓松动。
Fixed lift rise, during rotation, force the bolt will therefore change, once the change exceeds a certain range, it is possible so that bolts loose.
3、残疾人升降机必须的要进行定期的检查，注以各个连接部位螺栓的紧固情况，为设备的安全运行提供有力的保障。
Fixed lift must be regularly checked, note fastening bolts to various joints, to provide effective protection for the safe operation of the equipment.
