【摘要】 分析了打桩机液压系统中的打桩工作回路，分别建立了打桩锤负载敏感液压系统和定量泵液压系统的AMESim模型，并对两种液压系统中液压锤在不同打桩频率工况进行了仿真。结果表明：液压打桩锤的冲击能随频率的增大而减小，液压打桩锤的液压系统在引入负载敏感技术后，很大程度上提高了打桩的效率，且系统具有明显的节能效果。更多还原

【Abstract】 The working circuit of pile driver hydraulic system is analyzed, and the AMESim models of pile hammer loadsensitive hydraulic system and quantitative pump hydraulic system are established respectively, the hydraulic hammer in the two hydraulic systems is simulated under different driving frequency conditions. The results show that the impact energy of hydraulic pile hammer decreases with the increase of frequency, and the hydraulic system of the hydraulic pile hammer improves efficiency of pile driving to a great extent after introducing the load sensing technology, and the system has obvious energy-efficient.更多还原