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为降低定量合流液压系统液压缸行程终点的冲击,提出一种新型液压缸电液柔性限位方式。该方法通过在主阀芯两端加单向阻尼阀,并使泵进行先后卸荷来达到柔性限位的目的。运用静态分析方法,得出影响限位性能的关键参数,如节流孔尺寸、主阀芯两端回油腔背压及主阀芯两端容腔等。利用AMESim软件对限位方案进行动态分析,验证静态分析中关键参数选择的正确性。介绍液压缸电液柔性限位系统的设计细节。
In order to reduce the impact of the end of quantitative stroke hydraulic system hydraulic cylinder, a new hydraulic cylinder electro-hydraulic flexible limit mode is proposed. The method achieves the purpose of flexible limit by adding one-way damping valve at both ends of the main valve core and discharging the pump one after another. The static analysis method is used to obtain the key parameters that affect the limiting performance, such as the size of the orifice, the back pressure of the oil return chamber at both ends of the main valve spool and the cavity at both ends of the main valve spool. Using AMESim software to analyze the limit scheme dynamically, verify the correctness of the key parameter selection in static analysis. Introduce the design details of electro-hydraulic flexible limit system of hydraulic cylinder.