Most hydraulic lifts may have some relatively loud sounds and equipment noise after a long period of use. In fact, the main causes of equipment noise are: mechanical noise from mechanical failure, noise from hydraulic system failure, electrical Noise from equipment and component failures. So how to reduce the failure sound of these devices? We then look down.
The main reason for the noise increase of the structure of the lifting mechanism is that the upper and lower serious rollers of the hydraulic lifting mechanism are seriously worn and deformed or the surface smoothness is different, which causes the noise generated when the roller guide groove moves and the hydraulic lifting shakes. Insufficient time, running injury of roller bearing lubricating oil, resulting in wheel moving vibration and loud noise. The handling method is very simple, replace the roller bearing. The noise of the hydraulic lifting mechanism of the hydraulic lifting mechanism where the arms and the pin sleeve and the shaft are insufficiently connected for a long time is increased. In this case, if the lubricant is filled, the oil replenishment will not work. Check the barrel and shaft for wear. If the wear is severe, replace the sleeve and shaft. When the fixed hydraulic lifting with a high lifting height includes a track, the friction between the guide wheel and the track is also harsh when the guide wheel or the face wheel bearing is damaged or lifted. In this case, the heavily worn guide wheel bearings can be replaced.
Secondly, the failure of the hydraulic system is mainly caused by the following aspects: mechanical systems, cylinders, hydraulic pumps, hydraulic valves, and pipelines: After the hydraulic system is lifted and maintained, the hydraulic pumps, valves, and hydraulic installation and fixing problems easily cause large vibration noise . Noise is generated in the hydraulic cylinder; when the hydraulic oil of the hydraulic lift is replaced, due to an operation error, the air in the hydraulic cylinder is subject to high pressure, and it is easy to generate cavities and generate high-frequency noise. Hydraulic pump; when the hydraulic pressure rises and rises, the hydraulic pump is driven. If there is a problem with the gears and bearings of the hydraulic pump, the pressure causes the hydraulic system to periodically change and resonate. Hydraulic lifting produces high-noise relief valves; air is mixed with hydraulic oil, the overflow valve jams and wears severely, the overflow valve springs are fatigued and deformed, the relief valve pressure is unstable, and the relief valve decompression time is short The performance of the pilot valve of the relief valve is partially stable, and the noise of the air vibration caused by the pilot valve; so we often clean the relief valve, and replace the relief valve when the relief valve is damaged and seriously worn. When the hydraulic oil is insufficient, the phenomenon of the hydraulic pump occurs in the sky and the air enters the hydraulic oil with high noise.
Finally, electric motors, AC contactors, and electromagnetic reversing valves also cause high noise in hydraulic lifting. The main causes of noise are: wear and bending of motor rotor bearings, serious injury and injection of electric motors, noise, electrical engine cooling fan damage Insufficient fixing and high noise; Insufficient fixing of electric motors can also cause vibration and high noise. The AC contactor generates high noise. 85, below the rated voltage of the power supply voltage, the E-core short-circuit ring of the contactor is broken, the contact surfaces of York and York are distorted, and when the dust and rust contact is not good, the contactor will also cause "humming" noise. The electromagnetic coil of the electromagnetic reversing valve is not firmly fixed, and frequent tongue separation and high suction noise are generated.
The above contents of how to eliminate the noise of the hydraulic lift are all hoped to be useful to everyone.