本文对液压锤使用的闭式液压系统性能进行了分析，在此基础上提出了泵直接传动的开式液压系统。
Based on the analysis to close loop hydraulic system of hydraulic hammer, this paper provides on open loop hydraulic system.
介绍了该新型程控液压模锻锤结构特点、参数计算、性能分析、插装阀集成开式液压系统和PLC程序控制系统。
In this paper, the structural characteristics, parameters calculation, performance analysis, open loop hydraulic system with integrated plug in valves and PLC control system are presented.
设计了一个盾构掘进机的刀盘驱动液压系统，该系统是开式液压系统，应用电液比例控制技术实现了泵排量实时调节。
A hydraulic drive system of cutter head in shield tunneling machine was designed, which is open type hydraulic system and controlled in open-ring.
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