The crushing drum of stump machine often is stucked because of insufficient power output of the hydraulic motor,the phenomenon is due to the frequent working load changes.So a load-sensing variable displacement piston pump as the core element of the hydraulic crushing system was designed.The crushing system simulation model based on the load sensing control was built on the basis of in-depth analysis of various conditions at AMESim software,and its static dynamic characteristics were simulated.Simulation results show that:by adjusting the spring stiffness of pressure control valve and LS valve,the system’s responsive time is shortened,then the system’s dynamic characteristics are optimized;the flow of actuator of load sensing crushing system is associated with valve opening ratio only and has nothing to do with the external load.Load sensing crushing system of stump machine can achieve energy saving,improve machine reliability.
参考文献
相似文献
引证文献
引用本文
鲁力群,张鹏,史蕾蕾,樊旋旋,赵静.基于负载敏感控制的木墩机粉碎系统研究[J].机床与液压,2018,46(4):70-74. . Research on Crushing System of Stump Machine Based on Load-sensing Control[J]. Machine Tool & Hydraulics,2018,46(4):70-74