Yunnan Longyu Lifting Machinery Co., Ltd.

(1) Vibration and noise of hydraulic system Vibration and noise of hydraulic system are a common problem. Lifts that experience abnormal vibration
for a long time will inevitably affect the performance of the equipment and the life of the hydraulic components, and also affect people's physical and mental health. The reasons for this type of failure include air intrusion into the hydraulic system. When air is mixed into the hydraulic system, when the air flows into the high-pressure area, it is compressed and the volume suddenly shrinks. When the air flows into the low-pressure area, the volume suddenly increases. This sudden change in bubble volume will cause Explosive phenomenon, thus producing noise
This phenomenon is often called cavitation.
.The hydraulic pump or hydraulic motor is of poor quality. The quality of the hydraulic pump is not good, the accuracy does not meet the
technical requirements, the pressure and flow fluctuate greatly, and the oil trapped phenomenon cannot be eliminated well, resulting in
noise.
.Instability of the relief valve and improper adjustment of the reversing valve can also cause noise and vibration.
(2) Hydraulic system leakage
Solid particle contamination in the hydraulic system causes seals and mating parts to wear against each other.
.Defects in design and manufacturing.
.Shock and vibration cause pipe joints to loosen.
.The oil temperature is too high and the rubber seal is incompatible with the hydraulic oil and deteriorates.
(3) The oil temperature is too high
There are many reasons for the oil temperature to be too high. To sum up, there are two main points:
Improper design. Including that there is no unloading circuit in the system, the oil storage capacity of the oil tank is too small, resulting in
oil circulation too fast, poor cooling effect of the cooler, and improper selection of hydraulic components and pipelines for high-load and long-term operation. Unreasonable design and heat generated by mechanical friction of moving components, etc.
.Improper use. Including misuse of oil with too high viscosity, causing excessive hydraulic loss
Air is mixed into the hydraulic system, and abrasive particles, impurities, etc. are adsorbed on the filter element of the hydraulic pressure
The oil level in the tank is too low. Hydraulic oil The working environment temperature of the cooling circulation system is too high, etc.
(4) The speed of moving parts is abnormal or does not move at all
The main reason for this type of failure is
Insufficient oil delivery by the hydraulic pump. Including insufficient oil volume in the hydraulic pump, excessive oil suction resistance, air leakage in the oil suction pipe, excessive oil viscosity or too low oil temperature, too low oil level in the oil tank, and blocked vent holes in the oil tank.
. There is serious leakage in the hydraulic pump. For example, excessive wear of parts, enlarged sealing gap, casting defects in the pump body, etc. may cause the oil pressure chamber and the oil suction chamber to be connected.
.Leakage from pipe joints of pressure oil lines and various valves.
Harbin Longchuan Lift Co., Ltd. is an enterprise that has developed rapidly in Jinan, the hometown of Chinese lifts and lifting platforms. Mainly engaged in the elevator market in Harbin area. Mainly in Harbin, it produces lifts and lifting platforms that have passed quality inspections. Eight series of hydraulic lifting platforms, hydraulic lifts, freight elevators, boarding bridges, aerial work platforms, lifting tables, aluminum alloy lifts, and hydraulic machinery are widely used. In factories, property management, mobile sites, airports, equipment installation and maintenance and other industries.