梯形节流阀片油气弹簧阀系参数与特性试验

Research on the Valve Parameters and Performance Test of Hydro-pneumatic Spring with the Trapezium Throttle Slice

通过油气弹簧梯形节流阀片力学模型,建立阀片变形曲面方程,得到了阀片最大变形解析计算式。利用车辆参数和开阀速度,建立了油气弹簧开阀压力的解析计算式。在此基础上,利用开阀压力、阀片变形以及流量之间的关系,建立阀片厚度和常通节流孔面积设计计算公式,并对阀片厚度以及节流孔面积的设计影响因素进行了分析。在此基础上,通过实例对油气弹簧的阀片厚度和常通节流孔面积进行设计,并对设计油气弹簧进行了特性试验和验证。分析和试验结果表明:阀片厚度和常通节流孔面积的设计方法是正确的,对油气弹簧设计和开发具有参考价值。

In this paper, shown the principle diagram of the hydro-pneumatic spring, with the mechanics model, the analytic formula of the deformation for the trapezium throttle slice is established. By the vehicle parameters and valve opening velocity, the formula of valve opening pressure is builded. Based on this, through the relation of pressure with deformation and flux at valve opening, the design formula of throttle slice thickness and throttle hole area is founded, the affection factors to the design parameters is analyzed. Followed is a practical example for design of hydro-pneumatic spring, the performance test is conducted. The analysis and test results show that the design methods is effective and the formulas for throttle slice thickness and throttle hole area are accurate enough, with important meaning for the hydro-pneumatic spring design.