门式起重机起升过程动态特性研究  

Research on the Dynamic Property of Gantry crane in Hoisting Process

作　　者：董杰[1] 程文明[1] 漆静[1] 

机构地区：[1]西南交通大学机械工程学院,四川成都610031

出　　处：《机械设计与制造》2014年第6期79-83,共5页Machinery Design & Manufacture

基　　金：国家自然科学基金项目(51175442);中央高校基本科研业务费专项资金资助项目(2010ZT03);国家质检总局科技计划项目(2010QK302)

摘　　要：大型化、高速化逐渐成为起重机的一个发展趋势,这些都会加剧整机起升过程的动态响应。为研究门式起重机在起升过程中的真实动态特性,将起升过程分阶段简化成单质点和多自由度系统,并建立各阶段的运动微分方程,求解得到整个过程钢丝绳的时程曲线。建立门式起重机有限元模型,利用瞬态动力学分析方法,对起升过程动态特性进行详细研究,得到整机系统在起升过程中结构应力变化及各方向的振动情况。通过与按《起重机设计规范》的等效静态计算结果对比,得出按《规范》计算的结果将偏于不安全。The developing tendency of large-scale and high-speed of crane intensifies the dynamic response af gantry crane in hoisting process. In order to study the real dynamic property of gantry crane in hoisting process, the hoisting process is simplified into a single particle and multi-degree of freedom system by stages, and differential equations of motion af various stages is estoblished, thus getting the time-history curve of steel wire in the whole process. Using the analysis method of transient dynamics, the dynamic property in hoisting process is detailedly studied, thus getting the changes of structural stress and the vibration situation of various directions of the whole system in hoisting pracess. Compared with the calculated results of equivalent dynamics of Specifications of Crane Design, results achieved according to Specifications will tend to be unsafe.

关 键 词：门式起重机 起升过程 动态响应 瞬态分析 

分 类 号：TH16[机械工程—机械制造及自动化] TH21