Research on Dynamic Characteristics of Pilot Hydraulic Control Check Valve
Introduced a pilot hydraulic control check valve for hydraulic support.Firstly,the structural differences between the pilot hydraulic control check valve and the two-stage unloading hydraulic control check valve were compared,and the principle of improving the unloading speed by the pilot hydraulic control check valve was explained.Then,the dynamic characteristics of these two types of hydraulic control check valves were tested through experiments.A simulation model of the pilot hydraulic control check valve and the test system was built based on AMESim software,and the dynamic characteristics of the two types of hydraulic control check valves during the column lowering process were simulated.The experimental data and AMESim simulation results were consistent,proving that the pilot hydraulic control check valve can shorten the time difference from small valve core to large valve core opening,and has significant advantages in improving the speed of large cylinder diameter bracket movement.Provides a new approach to improve the moving speed and coal mining efficiency of hydraulic support,and provides a method for studying the dynamic characteristics of hydraulic control check valves on column.
pilot hydraulic control check valveunloadAMESimdynamic characteristic
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