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Four-column hydraulic press hydraulic cylinder crawling solution

by:WORLD     2022-10-15
The four-column hydraulic press is prone to the phenomenon of hydraulic cylinder crawling during the use process, causing the body to vibrate, causing hidden dangers in production and reducing production efficiency. This article introduces how to solve the crawling phenomenon of the hydraulic cylinder of the four-column hydraulic press.








1. The hydraulic cylinder of the four-column hydraulic press has air: by repeatedly operating the hydraulic cylinder, the purpose of exhausting can be achieved. According to the needs, an exhaust device can be installed in the two chambers of the piping or the cylinder to exhaust when the hydraulic system is working.



2. The sealing ring at the end cover of the hydraulic cylinder of the four-column hydraulic press is too tight or too loose: the sealing ring should be adjusted to have an appropriate tightness to ensure that the piston rod can be smoothly pulled back and forth by hand without leakage.



3. The friction force of the guide components in the hydraulic cylinder of the four-column hydraulic press is uneven: it is recommended to use metal as the guide support. When using a non-metallic support ring, a non-metallic support ring with good dimensional stability in the oil is recommended, especially the thermal expansion coefficient is small. . In addition, the thickness of the support ring is a dimension, and the dimensional tolerance and thickness uniformity must be strictly controlled.



4. The coaxiality difference between the piston and the piston rod of the hydraulic cylinder of the four-column hydraulic press must be corrected and adjusted, and the installation position of the hydraulic cylinder is offset. Check and correct the parallelism of the hydraulic cylinder and guide.








5. The inner diameter of the hydraulic cylinder of the four-column hydraulic press is linearly poor (barrel, cone, etc.): it must be repaired and the piston must be reconfigured.





6. After the hydraulic cylinder is installed in the four-column hydraulic press, it is not parallel to the guide rail: it must be adjusted or reinstalled.





7. The piston rod of the four-column hydraulic press is bent and has poor rigidity: the straight rod must be corrected and the diameter of the piston rod must be increased.





8. The gap between the moving parts of the hydraulic cylinder of the four-column hydraulic press is too large: the matching gap must be reduced.

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