液压货梯http://www.jnliqiao.com/使用频率越来越多，磨损消耗越来越多，事故也随着越来越多，除了正常的维护检修，其实在液压货梯出现事故前都会有征兆作为预警，那么液压货梯出现事故前有哪些征兆呢？

1、出现抖动现象，液压货梯左右晃动、上下垂直方向跳动、带有声音的共振等，质量方面的抖动、安装不良的抖动、调试不当产生抖动。
Jitter phenomenon, hydraulic freight elevators sloshing around, jumping up and down vertically, with the resonance of sound and other quality aspects of jitter, jitter bad installation, commissioning improper jitter.

2、出现滑层现象，液压货梯从指定楼层降到指定楼层以下。
Slip layer phenomenon occurs, hydraulic freight elevator down from the specified floor below the designated floor.

3、液压货梯冲顶现象，轿厢底部与所在楼层不在一个平面上，比楼层高度要低。
Hydraulic freight elevator hoisting phenomenon, where the floor and the bottom of the car is not a plane, the height is lower than the floor.

4、液压货梯http://www.jnliqiao.com/按钮失效现象，开关门按钮及楼层按钮失效。
Hydraulic freight elevator button failure phenomenon, door open button and floor button failure.