01
The hydraulic system hasn't been used for a long time. After this time, the vibration was very severe and the noise was loud. I don't know why?
Summary: It may have been stored for a long time, and the accumulator nitrogen leaked, which did not reduce the pulsation. Check the pressure of nitrogen, add pressure or replace the bladder. Noise is caused by too much vibration. Without vibration, it will be eliminated.
02
The oil cylinder is not working properly and can only go out and not return. What is the problem?
Summary: Check whether the other end of the oil cylinder has oil, whether the solenoid valve is reversed, and whether the leakage in the oil cylinder is particularly serious. Whether the oil return line is blocked by foreign objects.
03
What is the high starting pressure of the cylinder? What is the harm? How to solve it?
The high starting pressure of the oil cylinder is related to the manufacturing quality of the oil cylinder (such as the bending of the piston rod, the bending of the cylinder tube, etc.), the sealing form and the installation and other factors. For servo cylinders, high starting pressure will affect its dynamic characteristics. For ordinary oil cylinders, the starting pressure requirements are not as strict as servo oil cylinders, but it should not be too high. Once the starting pressure is found to be high, it is necessary to carefully re-measure the dimensions of the cylinder parts and check the sealing installation quality.
Summary: 1. Excessive internal resistance. 2. There is a mechanical failure in the external execution part.
The starting pressure of the oil cylinder is related to the design structure of the oil cylinder. The force area of the oil port in contact with the piston. For example, the size of the oil port is the force area of the piston at the initial start. The starting pressure is high, and the force area between the oil port and the piston is processed. The starting pressure of the chamber (starting pressure chamber) is very small.
04
Are there any good suggestions for hydraulic system cylinders to be synchronized?
Summary: Add a one-way throttle valve to the branch pipeline, the price is relatively cheap. If the requirement is relatively high, add a diverter throttle valve, which is expensive but the effect is better.
05
What is the main reason for the high maintenance rate of the hydraulic system?
The main reason is that the environment is bad. The hydraulic system is a relatively sophisticated equipment. Usually, more attention should be paid to maintenance. The oil quality should be good, and the oil should be filtered when refueling, and the system should be sealed. All kinds of testing equipment must be perfect, and professional personnel are required to record and maintain the working conditions of the system.
06
What should I do if the hydraulic cylinder moves irregularly?
to sum up:
1. It may be that the hydraulic pipeline is mixed with air, it is necessary to find out the part where the air is mixed, then clean and check, reinstall and replace the auxiliary parts.
2. There is serious wear and tear of the oil cylinder, which needs to be repaired or replaced.
3. Irregular reversing of the solenoid valve requires inspection of the electric furnace
4. The amplifier of the electro-hydraulic servo and proportional valve fails or is adjusted improperly.
One moves and the other does not move. When the first one fails, the second one starts to work. May I ask what kind of device should be used to connect the two hydraulic stations. If the others are designed, it will be between the two hydraulic stations. The realization of the connection
It takes time for the oil pump to start. The pressure needs to be maintained between the failure of the first hydraulic station and the start of the second hydraulic station to output normal pressure.
Summary: Through the pressure relay, the pressure signal can be converted into an electric signal and transmitted to the standby pump.