平头塔式起重机回转总成有限元分析及结构优化  

Finite element analysis and structure optimum of flat-top tower cranes

作　　者：甘盛霖 梅益[1] 鄢天灿 吴巧 Gan Shenglin;Mei Yi;Yan Tiancan;Wu Qiao(College of Mechanical Engineering,Guizhou University,Guiyang 550025,China)

机构地区：[1]贵州大学机械工程学院,贵阳550025

出　　处：《现代制造工程》2020年第3期147-151,156,共6页Modern Manufacturing Engineering

基　　金：贵州大学研究生创新基金项目(研理工2017052);贵州省科技计划项目(黔科合支撑[2017]2010)。

摘　　要：对某大型平头塔式起重机上、下回转支座结构建立有限元模型,通过有限元法分析了上、下回转支座在不同工况下的受力情况,判断其整体结构是否合理,是否达到强度要求,并在此基础上进行结构的优化。针对上回转支座应力分布不均问题,进行参数调整及局部结构改进,使其应力分布更均匀;针对下回转支座结构薄弱处进行局部强化,降低其最大应力。优化时将SolidWorks软件与Ansys Workbench软件结合起来,使参数优化设计达到快速优化的效果。优化后提高了整体结构承载的安全性,为后续同类型结构的设计提供参考。A finite element model was established for the upper and lower rotary support structure of a large flat-top tower crane.Through the finite element method,the stress situation of the upper and lower rotary supports under different working conditions was analyzed,and the overall structure was judged whether the structure was reasonable and whether the strength requirement was met.On this basis,the structure was optimized.To solve the problem of uneven stress distribution of the upper rotary support,local structure improvement and overall parameter adjustment were carried out to make the stress distribution more uniform.In view of the structural weakness of the lower rotary support,local strengthening was carried out to reduce its maximum stress.During optimization,SolidWorks and Ansys Workbench software were combined to use parameter optimization design to achieve rapid optimization effect.After optimization,the bearing safety of the whole structure was improved,which provides reference for subsequent design of similar structures.

关 键 词：塔式起重机 回转总成 有限元分析 结构优化 

分 类 号：TH213.3[机械工程—机械制造及自动化]