Modeling and Simulation of Buffer Device in Main Control Valve of Hydraulic Pile Hammer
In order to study the influence of the structure of a hydraulic pile hammer buffer device on the buffering performance of the main control valve,the structure composition and buffering principle of the buffer device are introduced.Considering the changes of pressure and temperature in the main control valve chamber caused by the hydraulic oil leakage,a dynamic mathematical model of the buffer device is established by combining the theory of thermodynamics and fluid dynamics.The simulation model is built based on MATLAB/Simulink software and the simulation analysis is carried out to study the influence rule of the hydraulic system oil return back pressure,buffer cavity diameter,leakage gap height and length and other parameters on the buffer performance.The results show that the height of the leakage gap,the length of the leakage gap and the diameter of the buffer chamber of the buffer device of the pile hammer main control valve are of a significant influence on the buffer performance,while the influence of the oil return back pressure of the hydraulic system is relatively small.The research results provide a theoretical basis for the design of the buffer device and the optimization of the structural parameters of the main control valve.
hydraulic pile hammermain control valvebuffer devicetwo-way cartridge valvedynamic characteristicsMATLAB/Simulink
万方数据
维普
