散货抓斗的运动学特性仿真分析

摘要

This paper focuses on how to improve the capacity of the bulk grab and studies the kinematic characteristics of excavation. It first establishes the kinematics mathematical model of bulk grab,then designs the reasonable Matlab pro-gram to express this model,and simulates different excavation statues by changing the control parameters during the excava-tion process. Through simulation analysis,the paper finds that the moving distance of the deck beam and through beam di-rectly influences the capacity of the bulk grab and the shape of excavation curves. When the simultaneous moving distance of the deck beam and through beam accounts 0. 8 of the total stroke,the productivity of the bulk grab is higher.%围绕如何提高散货抓斗挖掘量，对其挖掘的运动学特性进行研究。首先建立散货抓斗的运动学数学模型，然后设计合理的Matlab程序表达这种模型，再通过改变挖掘过程的控制参数仿真出不同的挖掘状态。通过仿真分析发现，上承梁、下承梁运动距离不同，直接影响抓斗的挖掘量及挖掘曲线形状，当上、下承梁同时运动的距离占总行程的比例约为0．8时，本次研究的散货抓斗可获得较高的作业效率。