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| Dynamic Characteristics of the Experiment System of Hydraulic Vibratory Piling Machine with Rotary Valve |
| LI Xiao-peng, ZHAO Guang-hui, LIANG Ya-min, WEN Bang-chun |
| School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, China |
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Abstract In order to realize continuous sinking pile, the model of five-way rotary valve is designed based on the cycle vibration excitation law, and then the experiment system of hydraulic vibratory piling machine is designed. The pore size and rotating frequency of rotary valve are changed to analyze their influence on the system dynamic characteristics and get the best parameters. Simulation results show that the system working characteristics is the best and the sinking efficiency is the highest when the value of pore size is 10mm and rotating frequency is 20Hz. Finally, experiment is conducted and the acceleration curves of hydraulic piston-rod are got by the B&K data acquisition and analysis system. The results demonstrate that the theoretical analysis of five-way rotary valve is correct and the experiment system of hydraulic vibratory piling machine is feasibility. The research provides evidence for selecting reasonable parameters and improving work efficiency in practical construction system.
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Received: 01 August 2013
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2014, Vol. 33 
