Multi stage oil cylinder is more and more widely used in recent years. How much do you know about it? Today, the editor will explain it to you.

During the use of the oil cylinder, the hydraulic oil should be changed regularly, and the filter screen of the system should be cleaned to ensure the cleanliness and increase the service life. When the oil cylinder is used every time, it should be fully extended and retracted for 5 strokes, and then run with load. This can exhaust the air in the system, preheat each system, and avoid the existence of air or water in the system, causing gas explosion (or charring) in the cylinder block, and the structural diagram of multi-stage cylinder, which will damage the seals, customize the multi-stage cylinder of the hydraulic cylinder, and cause faults such as internal leakage of the cylinder. Control the system temperature, the drawing and principle of multi-stage oil cylinder. If the oil temperature is too high, the service life of the seal will be reduced. If the oil temperature is too high for a long time, the seal will be deformed or even invalid.

The working principle is based on the size of the acting area of the piston. When it is pushed out, the force area of the thicker piston is large, and the thrust is also large. Naturally, when it is first out and retracted (under the action of external force), the smaller the piston area (or the force area), the smaller the resistance is. Stuck valve core or blocked valve hole: when the flow valve or direction valve core is stuck or blocked valve hole, the hydraulic cylinder is prone to error or method failure. The control pressure of the hydraulic system is too low: the throttling resistance in the control pipeline may be too large, the flow valve is not adjusted properly, the control pressure is not suitable, and the pressure source is disturbed.

Air entering the hydraulic system: mainly due to leakage in the system. Slow initial operation of hydraulic cylinder: under the condition of low temperature, the hydraulic oil has high viscosity and poor fluidity, resulting in slow operation of hydraulic cylinder. At this time, check the oil pollution; Check whether dirt or colloidal sediment can jam the valve core or block the valve hole; Check the wear of the valve body.