Low working pressure of hydraulic cylinder under no-load condition
Release time:
2024-03-26
The low working pressure of the hydraulic cylinder under no load condition is a comprehensive index reflecting the accuracy of the production and installation of hydraulic cylinder parts and the size of the sealing conflict force. Hydraulic cylinder at full load movement without crawling phenomenon of low speed, it does not have a unified index, bear the different work of the hydraulic cylinder, the low stability of the speed requirements are not the same. The wear ring on the piston is severely worn, causing conflicts between the piston and the cylinder liner, pulling the cylinder liner, piston and seal. Seal long-term use failure, piston seal (mostly U, V, Y ring, etc.) aging. The hydraulic oil is dirty, and a large amount of impurities enter the cylinder to wear the piston seal to a bad condition, usually iron filings or other foreign matter.
Hydraulic cylinder series connection: in the hydraulic cylinder, the oil inlet of the subsequent reversing valve is the supply of the previous oil return, and in each valve, there is no separate oil return path connected to the oil return. Hydraulic cylinder manufacturers take you to know more! Parallel connection of hydraulic cylinders: the pressure oil in the hydraulic cylinder is connected with the inlet oil of each reversing valve, and the return oil is collected through the return oil path. Hydraulic cylinder series and parallel connection: for this one, compared with simple series and parallel connection, it is slightly more complicated, but it is not incomprehensible. Hydraulic cylinder, hydraulic cylinder and cylinder, in fact, these three refer to the same one, but they are different in title. As for how to use it, we can do it according to our personal preferences or habits. The disassembly and assembly of the cylinder, from a professional point of view, as long as the correct and standard.
Piston hydraulic cylinder can be divided into single rod type and double rod type two structures, the fixed method by the cylinder fixed and piston rod fixed two kinds, according to the effect of hydraulic pressure, there are single effect type and double effect type. In the single-effect hydraulic cylinder, the pressure oil is only supplied to one cavity of the hydraulic cylinder. The hydraulic pressure makes the cylinder move in one direction, while the opposite direction movement is ended by external force (such as spring force, dead weight or external load, etc.); The movement of the piston of the double-effect hydraulic cylinder in two directions is replaced by the oil in two chambers, which is ended by the effect of hydraulic pressure.
It is only provided with a piston rod on one side of the piston, so the effective effect area of the two chambers is different. When the oil supply is combined, different chambers enter oil, and the movement speed of the piston is different; when the load force to be overcome is combined, different chambers enter oil, and the required oil supply pressure is different, or after the system pressure is adjusted, The load force that the hydraulic cylinder of the sanitation garbage truck can overcome in the two directions is different.
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2024-03-26
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