What causes the low operating speed of hydraulic cylinders?
Time:2021-03-08
Views:3005
The hydraulic cylinder of the four-column hydraulic machine runs at a low speed. What is the reason for the occurrence of this problem? Three points are listed:
1. The hydraulic cylinder of the four-column hydraulic press has low-speed creeping caused by the mixing of gas. In this situation, the intention of exhausting can be achieved by repeatedly operating the hydraulic cylinder. When necessary, an exhaust device is installed in the two chambers of the pipeline or the hydraulic cylinder, and exhaust is performed when the hydraulic system of the four-column press is operated.
2. Low-speed creep caused by improper planning of the hydraulic cylinder of the four-column hydraulic press. The sliding cooperation gap between the piston and the cylinder body, the piston rod and the guide sleeve in the hydraulic cylinder can be correctly planned.
3. Low-speed creeping caused by uneven friction of the guiding elements in the hydraulic cylinder of the four-column hydraulic press. It is advocated to prefer metal as the guiding support. For example, non-metallic support ring is used. It is recommended to use non-metallic support ring with good dimensional stability in the oil, especially the thermal expansion coefficient should be small. In addition, it is necessary to strictly control the thickness of the support ring. Uniformity of service and thickness.
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