油气弹簧叠加阀片设计方法及对节流缝隙影响

Design Methods of Superposition Throttle Slices and Influence on Throttle Aperture of Hydro-Pneumatic Spring

利用开阀压力和阀片变形计算公式,建立了油气弹簧单片节流阀片厚度解析设计式。利用叠加阀片等效厚度和应力计算公式,建立了叠加阀片设计方法。对开阀条件进行研究,建立了调整垫片厚度设计公式。利用开阀压力和流量之间关系,建立油气弹簧节流缝隙设计公式。在此基础上,对阀系参数设计影响因素进行了分析。通过实例,对油气弹簧阀系参数进行了设计,对叠加阀片等效厚度、开阀特性和应力强度进行验证,并对油气弹簧进行了特性试验。特性分析和试验结果表明,油气弹簧阀系参数设计应考虑叠加阀片的影响。

A design formula of single throttle slice thickness was established with the computation formulas of opening valve pressure and throttle slice deformation. The design method and principle of superposition slice were founded using the computation formulas of equivalent thickness and stress. The conditions of opening valve were studied, and the computation formula of adjustment gasket was given. The design-formula of throttle aperture of hydro-pneumatic spring was established according to the relationship between pressure and flux. On basis of this, the influence factors of valve parameters were analyzed. The parameters of hydro-pneumatic spring were designed, the equivalent thickness of superposition throttle slice and the characteristics and stress intensity of opening valve were validated, and the performance test was conducted for the hydro-pneumatic spring. The experiment and analysis results show that the superposition throttle slices has the effect on the valve parameters of hydro-pneumatic spring.