The hydraulic cylinder belongs to the actuator of the hydraulic system, and the operation failure occurs in addition to the hydraulic cylinder itself, and is also related to the entire hydraulic system.
The hydraulic cylinder belongs to the actuator of the hydraulic system, and the operation failure occurs in addition to the hydraulic cylinder itself, and is also related to the entire hydraulic system. Therefore, Dalan Hydraulics tells you to carefully observe the symptoms of the fault when troubleshooting the operation of the hydraulic cylinder. Using logical reasoning and item-by-item forced method, carefully analyze the cause of the fault from the outside to the inside to determine the elimination method and avoid blindly dismantling. Big unloading.
There are many reasons for the failure of hydraulic cylinder operation. The improper installation, use and maintenance are caused by humans and will not be explained here. This paper analyzes the typical typical operating failures - hydraulic cylinder malfunction.
The hydraulic cylinder malfunction is mostly manifested as: the hydraulic cylinder can not move, the hydraulic cylinder is not sensitive (blocking phenomenon) and the hydraulic cylinder moves and crawls.
The phenomenon that the hydraulic cylinder cannot move often occurs on the hydraulic cylinder that has just been installed.
To troubleshoot this fault, first look for the cause from outside the hydraulic cylinder:
1. Whether the resistance of the hydraulic cylinder to perform moving parts is too large, whether there is a stuck, wedged or other parts;
2. Whether the inlet pressure has reached the specified value.
3. After excluding the external factors, further check the internal causes of the hydraulic cylinder and take corresponding troubleshooting methods.
The selection of hydraulic cylinders mainly follows the following conditions:
1, inner diameter
2, travel
3, the use of pressure
4, the installation form
5. When the operating speed of the hydraulic cylinder after the load reaches a certain standard or above, the hydraulic cylinder with the buffer device is required. Or to achieve higher speeds, it is necessary to install a speed reducing valve outside the hydraulic cylinder.
6. Choose hydraulic oil and oil seal carefully. Different hydraulic oils are used for oil seals of different materials to ensure the life of the hydraulic cylinder.
Some manufacturers now reduce the cost, the piston rod is not tempered, the rod coating is not enough, the cylinder finish is not up to standard, the guide sleeve is not copper, but the ductile iron is changed. Although the cost is reduced, the quality of the hydraulic cylinder is not satisfactory. of.
Maintenance conditions Hydraulic cylinders must be properly used and regularly maintained to meet user requirements.
Before use, the cylinder should be deflated. The buffer control valve should be adjusted to a reasonable position. The cleanliness of the oil should be checked regularly. The dust on the cylinder should be cleaned regularly. Pay attention to waterproof and fireproof.
With the rapid development of China's hydraulic industry, hydraulic cylinders can completely replace imports. The processing level of oil cylinders is completely passed by domestic manufacturers. The key lies in the seals. Domestic seals can not completely replace imports, so we recommend the best seals for important applications. Use imported parts, eg: Japan's NOK seals.
----- Editor-in-Chief: Dalan Oil Pump Motor 02-Procurement Consultant
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