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1. The hydraulic lifting platform has problems in the hydraulic pump, motor, valve, and hydraulic installation after the maintenance of the hydraulic system. It is easy to cause large noise due to vibration.
2. Noise is generated in the hydraulic cylinder. When the hydraulic oil of the hydraulic lifting platform is replaced, due to an operation error, the air in the hydraulic cylinder is caused. Under the action of high pressure, cavitation may easily occur, and high frequency noise may be generated. If the piston rod bends or the new seal is too tight when replacing the new seal, there is also a lot of noise. If it is a tight seal, the noise will be smaller during a period of running. If the rod is bent, it needs to be corrected. In addition, the hoses are used as much as possible in the hydraulic piping. Even if the piping is arranged, the vibration and noise can be reduced, and the piping can avoid dead bending.
3. The hydraulic pump produces noise. When the hydraulic lifting platform rises, the hydraulic pump tells the operation. If there is a problem with the gear or bearing of the hydraulic pump, the pressure of the hydraulic system will periodically change, which will cause the hydraulic system to resonate and generate noise.
4. Hydraulic lifting platform relief valve can also produce high noise. When the hydraulic oil is mixed with air, the overflow valve is stuck or seriously worn out, the spring of the overflow valve is fatigued and deformed, the pressure of the overflow valve is unstable, the pressure relief time of the relief valve is too short, and the overflow valve is easily caused. The pilot valve performance is partially stable, causing air vibrations in the pilot valve and noise. Therefore, we must often clean the overflow valve. If the overflow valve is damaged or worn badly, replace the overflow valve.
5. When the hydraulic oil is low, the hydraulic pump will produce an air suction phenomenon, causing air to enter the hydraulic oil, which will also generate high noise.
Electric motors, AC contactors, or electromagnetic reversing valves can also cause high noise from hydraulic lifting platforms.
1. The reasons for the high noise generated by electric motors are: motor rotor bending, serious wear or bearing damage, resulting in electric motor broom, noise; electric motor cooling fan is damaged or fixed is not strong to produce high noise; electric motor is not fixed firmly, It can also cause vibration and produce high noise.
2. AC contactors can also produce high noise. When the power supply voltage is lower than 85% of the rated voltage, the short circuit ring of the E-shaped core of the contactor is broken, the contact surface of the yoke and the armature is skewed, and the dust or rust does not contact well. noise.
3. Electromagnetic reversing valve The electromagnetic coil is not fixed firmly. Frequent separation and suction of armature can also produce high noise.
In summary, the causes of the noise caused by the hydraulic lifting platform are many. When we examine the reasons, we need to eliminate them one by one, so as to truly solve the problem of large noise in the lifting platform.
Causes and countermeasures of large noise in hydraulic lifting platform
Sky Tower Lift analyzes the reasons for the large noise of the hydraulic lifting platform and countermeasures. The noise generated by the hydraulic system fault mainly has the following aspects: mechanical system, fuel tank, hydraulic pump, hydraulic valve and pipeline.