摘要
液压激振系统中换向阀在高频换向情况下换向行程将大幅衰减,导致阀的通油能力下降,使阀不能适应高频大流量激振系统要求。为此提出了位移反馈式的液压自动换向阀。上述换向阀结构简单,主要由一个二位四通换向主阀和一个二位三通先导阀组成,在高频换向时依然能有大的换向行程。为研究各参数对阀换向性能的影响建立了阀的数学模型,并利用AMESim软件对自动换向阀系统进行仿真。通过仿真分析得出阀所需的平均流量与压力是相关的,近似呈平方根的关系;自动换向阀的换向频率与压力也呈平方根关系;主阀芯换向行程受供油压力影响较小,主要与系统结构参数有关;通过合理的结构设计能使阀更好的适应高频大流量激振系统。
A novel hydraulic automatic reversing valve with place feedback is proposed and investigated. The valve contains a two - position four - way directional main valve and a two - position three - way pilot valve and it can have a lager reversing stroke with high frequency reversing. The mathematical and AMESim simulation models of the valve are established. By simulation analysis, the results show that, the system＇s pressure and mean flow of automatic diverting valve are related, and they follow a square root relationship. Reversal frequency of the valve is a square root relationship with the pressure also, The reversing stroke is mainly related to system structure, only slightly to pressure. The valve can fit in high frequency and large flow vibration systems by means of rational structure and parameter design.
出处
《计算机仿真》
CSCD
北大核心
2016年第12期220-224,共5页
Computer Simulation
基金
高性能复杂制造国家重点实验室资助项目(zzyjkt2015-03)
关键词
自动换向阀
高频大流量激振系统
换向频率
换向行程
Automatic diverting valve
High frequency and large flow vibration systems
Reversing frequency
Reversing stroke
