1、重庆升降机液压系统出现故障时也能导致液压货梯运行时噪音变大，设备在维修液压系统后液压泵、马达、阀门及液压安装固定存在问题容易引起震动产生较大噪音，还有可能是液压货梯液压缸内产生噪音，液压油时，由于操作失误，导致液压缸内有空气，在高压作用下，容易产生气穴现象，产生高频噪音。
Hangzhou freight elevator hydraulic system failure can lead to hydraulic freight elevators running noise becomes large equipment hydraulic system after repair hydraulic pumps, motors, valves and hydraulic mounting problems likely to cause greater vibration noise, there may be a hydraulic freight elevator noise hydraulic cylinder, hydraulic oil, due to operational errors, leading to the hydraulic cylinder with air, under high pressure, prone to cavitation, to produce high-frequency noise.    
 
2、货梯机械系统、油缸、液压泵、液压阀和管路问题。可能是电动机转子弯曲、磨损严重或轴承损坏，导致电动马达扫膛，产生噪音，可能是流接触器产生高噪声。当电源电压低于额定电压的85%、接触器E形铁芯的短路环折断、磁轭与衔铁的接触面歪斜、有灰尘或生锈接触不好时都会导致接触器产生的噪音。
Hangzhou freight elevator mechanical systems, cylinders, hydraulic pumps, hydraulic valves and piping problems. Motor rotor may be bent, badly worn or bearing damage, resulting in electric motors sweep chamber, noise may be generated by high noise flow contact. When the supply voltage is less than 85% of rated voltage, short contact E-shaped core of the ring to break the yoke of skewed armature contact surface, dust or rust will cause poor contact contact noise generated.
     
3、货梯电动马达、交流接触器或电磁换向阀也会引起液压货梯产生高噪音。
Hangzhou freight elevators electric motors, AC contactor or solenoid valve can cause high noise generated hydraulic freight elevators.