The research and development of the freight elevator greatly facilitates the project construction, and it satisfies the needs of high-altitude operations in the project construction. Although the use of the freight elevator is very convenient, it also has a disadvantage that it is very noisy. Therefore, many people will consider how to reduce the noise of the de-escalation. In fact, this problem is very easy to solve, as long as the cushion rubber is installed in the driving device.Before using the fixed freight elevator, check whether the parts are tight. The worm gear box should be filled with standard and sufficient lubricant to ensure that the worm gear is well lubricated.The inner bearing of the roller in the drive device is well lubricated, and the arc surface of the roller and the main chord maintain a complete lubricating grease film surface. A good lubricating grease film surface has the effects of reducing wear and noise.The coaxiality of the motor shaft and the worm shaft in the drive device should be less than 0.1mm, and there should be a 2mm gap at the shaft end to ensure that the motor bearing can bear a reasonable load and reduce the motor running noise; the motor brake anti-return bearing should be kept intact.Check whether the oil cylinder, oil pipe, motor and other components of freight lift manufacturers are well-sealed and whether there is air leakage. The noise problem when the fixed freight elevator is working is abnormal. Therefore, it is necessary to do a good job in troubleshooting in time, find the cause, reduce noise pollution, and reduce the occurrence of dangerous accidents.