基于有限质点法的牵引走板与双滑车多体动力计算方法  

DYNAMIC CALCULATION METHOD OF MULTI-BODY SYSTEM OF TRACTION PLATE AND DOUBLE-PULLEY BASED ON FINITE PARTICLE METHOD

作　　者：秦剑 江明 景文川 贾宁 李刚 Qin Jian;Jiang Ming;Jing Wenchuan;Jia Ning;Qiao Liang(China Electric Power Research Institute,Beijing 100055,China;State Grid Sichuan Electric Power Transmission&Transformation Construction Co.,Ltd.,Chengdu 610051,China)

机构地区：[1]中国电力科学研究院有限公司,北京100055 [2]国网四川电力送变电建设有限公司,成都610051

出　　处：《动力学与控制学报》2021年第5期89-96,共8页Journal of Dynamics and Control

基　　金：国网公司科技项目(5200-201955119A-0-0-00)。

摘　　要：根据输电线路张力放线施工中牵引走板与放线滑车的实际接触运动关系,构建了由钢丝绳、牵引走板、导线及双滑车等部件组成的多体运动系统,提出了符合实际情况的钢丝绳、导线、牵引走板等与双滑车的接触判断方法.基于有限质点法理论,结合部件间的空间位置关系,给出了单元节点的作用力表达式,并通过罚函数法给出了不同接触状态下牵引走板对滑车的接触力,形成了可分析牵引走板与双滑车结构接触碰撞的动力计算方法.根据张力放线施工实际情况,计算分析了牵引走板与双滑车结构接触过程中的滑车载荷、摆动角度的变化,并针对悬挂长度、走板厚度等施工因素,总结了牵引力、最大接触力、滑车载荷、摆动幅度等参数对系统安全的影响.本文提出的计算方法可指导工程中牵引走板与滑车的结构设计及施工安装,为输电线路放线施工提供技术参考.According to actual contact relationships between the traction plate and stringing pulley in tension stringing construction of transmission lines,a multi-body motion system is constructed including traction rope,traction plate,conductor and double-pulley structure.A contact judgment method between wire rope,conductor,traction plate and double-pulley is then proposed in accordance with the actual situation.Combined with the spatial position relationship between the components,the force expressions of the element node are proposed based on the finite particle method,and the contact forces of the traction plate to the pulley under different contact conditions are obtained by penalty function method,leading to the dynamic calculation method for the contact collision between the traction plate and the double-pulley structure.According to the actual tension stringing construction,variations of pulley loads and swing angles during the contact process are calculated and analyzed.The rules of traction force,maximum contact force,pulley load and swing amplitude are summarized under the influence factors such as suspension length and traction plate thickness.The proposed calculation method can guide the structural design,construction and installation of traction plate and pulley in engineering,and provide technical reference for the construction of transmission lines.

关 键 词：张力放线 牵引走板 双滑车 有限质点法 接触力 

分 类 号：TM752[电气工程—电力系统及自动化]