全液压钻机负载敏感液压系统设计及仿真分析

The Design and Simulation of Load Sensing Hydraulic System in Fully Hydraulic Driver Drill

在分析全液压钻机作业过程及传统液压系统组成的基础上,设计了ZDY320型全液压钻机的负载敏感液压系统,该系统采用负载敏感控制及传统辅助控制方式相结合,在合理控制成本的同时最大限度节省了功耗率。首先推导出负载敏感阀和节流阀的数学模型,然后通过在图形化仿真环境AMESim中建立负载敏感泵与液压系统主轴回转回路模型并进行仿真,进一步分析负载敏感控制系统对全液压钻机性能的影响及其特点,从而得出负载敏感液压系统的性能特点,为液压系统自动控制设计提供参考。

On the basis of the analysis of fully hydraulic drill working process and traditional hydraulic systems, the load sensing hydraulic system of ZDY320 type hydraulic engineering drilling machine is designed. It combines a load sensing and traditional auxiliary control mode, and makes the best use of the motor power as well as controlling cost reasonably. The mathematical models of load sensitive valve and throttle valve are derived. We employ AMES- im to build models of load sensitive pump and the circuit of spindle in the hydraulic system and further analyze its characteristics and the influence. It also provides a reference for the automatic control design of hydraulic system.