Application of Pressure Intensifier Using Oil Hammer to PressureIntensification in Hydraulic Cylinder of Construction Machine

摘要

The active utilization of the pressure rise phenomenon of an oil hammer and a new type ofhydraulic pressure intensifier using an oil hammer were proposed and developed. In this research, anapplication of this intensifier to pressure intensification in a hydraulic cylinder of a constructionmachine is studied through experimentation and simulation. High pressure is generated when the fluidflow through the pipeline is shut quickly by the solenoid operated valve at the downstream end. Ifthe fluid is taken out through the check valve when the pressure is high, much higher-pressure fluidthan the supply is obtained. A vessel is used as a model of a hydraulic cylinder without displacement.The pressure in the vessel is intensified. The necessary pressure level is thought to be around 30MPa.We develop a block diagram for the simulation considering the pipeline dynamics.