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Analysis on the problems of hydraulic lock used by hydraulic cylinder manufacturers
Hydraulic cylinder manufacturers, in practice, hydraulic lock will also present some problems, for everyone to understand, we will go through an example to clarify. First of all, we selected a hydraulic cylinder typical double hydraulic control check valve hydraulic lock loop, when its valve is in the middle, two hydraulic control check valve will immediately closed, the Piston will return to static state. Hydraulic Cylinder Manufacturers explained that in such a situation, because of the sealing effect of hydraulic control one-way Valve is better, so that the piston can be locked for a long time in the direction of the suspension. However, in practical use, this circuit is not suitable for use in the case of severe load oscillation. This is because if the load oscillates violently, it causes the Piston Rod to swing the Piston from side to side. In this way, the Rod Cavity and the rod-free cavity which constitute the hydraulic cylinder are replaced to form the negative pressure cavity and the pressure cavity. Generally, the back pressure scale of the hydraulic cylinder is 0.2 ~ 0. SMPA. Hydraulic cylinder manufacturers, in such a situation, is able to open the hydraulic lock one-way Valve and into the negative pressure zone in the cylinder. Together, due to the impact of the hydraulic lock, the pressure chamber of the oil can not be discharged, and is squeezed into high pressure. As it oscillates, the pressure in the two chambers of the cylinder increases. Hydraulic cylinder manufacturers explain, for example, we measure the system pressure of 6MPA, will find that the actual pressure of the hydraulic cylinder has reached 15MPa. In such a situation, a serious accident would result if the unloading condition were to occur. This is due to the practical use of time, it is usually required to ensure that the Piston Chamber pressure. In order to deal with this problem, we can adopt such measures to deal with: for example, the circuit of the double hydraulic control one-way Valve to one-way hydraulic control one-way Valve. Hydraulic cylinder manufacturers, in this way, not only can play the effect of locking the Piston Chamber pressure, but also can effectively prevent the hydraulic cylinder Piston Rod Chamber to establish pressure.