Modeling and dynamic behavior analysis of a coupled multi-cable double drum winding hoister with flexible guides
Modeling and dynamic behavior analysis of a coupled multi-cable double drum winding hoister with flexible guides
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DOI：
10.1016/j.mechmachtheory.2016.10.021
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发表时间：
2017-02
影响因子：
5.2
通讯作者：
Ji Wang;Yang-jun Pi;Yumei Hu;Xiansheng Gong
中科院分区：
文献类型：
--
作者：
Ji Wang;Yang-jun Pi;Yumei Hu;Xiansheng Gong
本文应用汉密尔顿原理建立了多绳双卷筒柔性导轨提升机的动力学模型。每根斜拉索由斜拉索和变长竖拉索组成，被建模为轴向运动的弦线，考虑了弦线的横纵耦合非线性振动。通过输送机的动力学和运动学方程描述了不同电缆之间的耦合。通过考虑卷筒上缠绕的缆索质量的变化，得到了卷筒的时变等转动惯量。本文将通常近似为弹簧-阻尼系统的柔性导轨模型建模为两端固定的张紧弦。通过计算运输机转角处的横向位移和柔性导轨的反作用力，在运输机与柔性导轨的相互作用中考虑了柔性导轨的动态特性。对多绳双卷筒提升机在输送偏心和卷筒半径不一致等不平衡因素下的动力学行为进行了仿真分析。提出了限制索间动张力不一致的设计原则。
In this paper, a comprehensive model is derived to analyze the dynamic behavior of a multi-cable double drum winding mining hoister with flexible guides by using Hamilton principle. Each cable which consists of an inclined section and a varying length vertical section is modeled as an axially moving string with coupled transverse-longitudinal nonlinear vibration. The coupling between different cables is described through the dynamic and kinematic equations of the conveyance. The time-varying equal moment of inertia of drums is obtained by considering the varying mass of cables winding on drums. The model of flexible guides which was always approximated as a spring-damping system is modeled as a tensioned string with fixed ends in this paper. The dynamic characteristics of flexible guides are considered in the interaction between the conveyance and the flexible guides via calculating the lateral displacement of the conveyance corner and reaction forces from flexible guides. The dynamic behavior of the multi-cable double drum winding hoister with unbalance factors, the conveyance eccentricity and the drum radius inconformity, are analyzed by simulation. Some design principles are proposed to restrict the inconformity of dynamic tension between cables.