Reasons for the vibration of the piston rod of the hydraulic cylinder

Hydraulic cylinders are important industrial machinery. Many users will find that the piston rod jitters during use. The following editor takes you to learn more about the reasons for the vibration of the piston rod of the hydraulic cylinder.

　　 1. Check whether the hydraulic cylinder piston is crawling due to the low working oil level and the oil pump sucking in air. At this time, add oil to the specified oil level.

　　 2. Check whether the oil temperature is too high, causing the main cylinder piston support ring to seize.

　　 1. Check whether the main overflow valve overflows frequently due to high load during pumping. At this time, overflow reduces the load.

　　2. Check whether the main overflow valve is faulty and overflows frequently. If so, disassemble and inspect the main overflow valve, replace damaged parts and adjust them.

　　 3. Check whether the auxiliary electro-hydraulic valve and unloading valve are faulty. Because they will shorten the unloading time of the distribution valve oil pump when they fail, and they are often in high-load operation. At this time, it is necessary to troubleshoot the two valves.

　　4. If the hydraulic oil has been changed, check whether the viscosity of the oil is too low, which makes the internal leakage of the oil pump too large. If so, replace hydraulic oil with suitable viscosity.

　　 5. Check whether the oil pump is hot to determine if the oil temperature rises due to the failure of the oil pump. If it is not because the oil viscosity is too low that the oil pump heats up, the oil pump needs to be disassembled at this time to find out the cause of the fault and eliminate it.

　　 6. Check whether the cooling water of the cooler is unblocked and the temperature of the cooling water inlet is too high. If so, lower the cooling water inlet temperature and keep it unblocked.

　　 7. Check whether the main oil pump suction system is leaking.

　　Hydraulic cylinder equipment will have certain failures after long-term use, and piston jitter is a common failure. When the equipment has a similar failure, we must first understand the cause of the failure. Only in this way can we solve the problem quickly and effectively. At the same time, we can also avoid these failures through maintenance during the normal use of the equipment. .