同跨距、不同起升重量门式起重机金属结构快速轻量化设计  

Fast and Lightweight Design of Metal Structures for Gantry Cranes with Same Span and Different Lifting Weights

作　　者：张军 程文明[1] 李银启 ZHANG Jun;CHENG Wen-ming;LI Yin-qi(School of Mechanical,Engineering Southwest Jiaotong University,Sichuan Chengdu 610031,China)

机构地区：[1]西南交通大学机械工程学院

出　　处：《机械设计与制造》2019年第A01期1-4,共4页Machinery Design & Manufacture

基　　金：国家自然科学基金资助项目(51675450)

摘　　要：为实现跨距相同、起升重量不同的系列门式起重机金属结构快速轻量化设计,在对门式起重机进行全参数化建模和求解分析的基础上,对门式起重机主梁、上下端梁及支腿的截面尺寸和厚度等设计变量做灵敏度分析,得出主梁的截面尺寸及厚度对整机金属结构的重量影响最大,主梁和上端梁的截面尺寸对起重机悬臂刚度影响最大。以门式起重机重要截面尺寸结合灵敏度分析结果选取关键设计变量,同时结合零阶优化算法对整机金属结构进行系列化设计,在满足设计要求下重量比优化前减轻了11.1%。In order to achieve rapid and lightweight design of metal structures for gantry cranes with the same span and different lifting weights, based on the full parametric modeling and solution analysis of gantry cranes, the main beam,upper end and lower end beams of gantry cranes and support The sensitivity of the design variables such as the cross-sectional dimensions and thickness of the leg is analyzed. It is concluded that the cross-sectional dimensions and thickness of the main beam have the greatest influence on the weight of the entire metal structure. The cross-sectional dimensions of the main beam and the upper end beam have the greatest influence on the crane’s cantilever stiffness. The important design variables of the gantry crane combined with sensitivity analysis results were selected together with the zero-order optimization algorithm. The metal structure of the complete machine was serially designed, and the weight ratio was reduced by 11.1% before the design requirements were met.

关 键 词：门式起重机 金属结构 快速轻量化 全参数化 灵敏度分析 

分 类 号：TH16[机械工程—机械制造及自动化] TH21