针对压力补偿回路带梭阀的负载敏感液压系统中存在超压和气蚀的问题,分别在正负载和负负载作用下,结合负载敏感功能工作状态对负载敏感液压系统的超压和气蚀问题进行了研究,通过理论推导得出了超压和气蚀发生的具体负载条件,据此提出了限定系统负载边界和采用非对称阀控制非对称缸的优化改进措施,并通过模型仿真验证了改进措施对改善超压和气蚀问题的有效性,为带梭阀负载敏感液压系统的设计提供了理论依据。
Abstract
In order to solve overpressure and cavitation problems of the load-sensing hydraulic system whose pressure compensation pipeline cantains a shuttle valve, we study the overpressure and cavitation of the system under different loads and different load-sensing working states, find the concrete load conditions to lead to overpressure and cavitation, and propose the optimization measure which is to limit the load boundary and use asymmetrical valves to control asymmetrical cylinders through theoretical derivation. The effectiveness of these measures is also verified through the model simulation. The research results can provide theoretical bases for the design of load-sensing hydraulic system with a shuttle valve.
关键词
压力补偿 ;
梭阀 ;
负载敏感 ;
超压 ;
气蚀
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Key words
pressure compensation ;
shuttle valve ;
load-sensing ;
overpressure ;
cavitation
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基金
湖北省自然科学基金(2016CFB614); 海军工程大学科研自主立项青年基金(425517K140)
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