施工技术 2013年9月下 118 CONSTRUCTIONTECHNOLOGY 第42卷第18期 DOI:10. 7672/sgjs2013180118 基于ANSYS 的胎带机布料臂架全工况分析* 韩林山”,於进”,钟艺谋” (1.华北水利水电大学机械学院,河南郑州450011;2.甘肃中水电水工机械有限公司,甘肃临夏731600) [摘要】以国内首次研制的50m大跨距胎带机布料臂架为研究对象,采用全工况有限元分析方法,基于ANSYS软 件平台实现了布料臂架系统的精确建模和拟实边界条件。
对布料臂架全工况分析的步骤进行了总结,并就遇到的 问题提出解决方案。
重点研究布料臂架在整个行程的极限应力曲线规律、产生的原因以及其在不同俯仰角引起的 倾翻力矩。
采用布料臂架全工况有限元分析方法可以更加全面、准确地指导布料臀架设计。
[关键词]建筑机械;布料臂架;有限元分析;极限应力 [中图分类号]TP29 [文献标识码]A[文章编号】1002-8498(2013)18-0118-04 Full-workingScenarioAnalysisofDistributingArm of a BeltMachinewithANSYS Han Linshan',Yu Jin',Zhong Yimou² (1.School of Mechanical Engineering,North China University of Water Resources and Elecric Power, Zhengzhou,He'nan 450011, China; 2. Gansu Hydropower Hydraulic Machinery Co.,Ltd., Linxia,Gansu 731600,China) Abstract;A full working scenario finite element analysis was performed to the 50m long distributing arm of a belt machine,which was the first of this length that has been developed in China.Accurate modeling and simulation of the boundary conditions were achieved for the distributing arm with ANSYS software. The procedure for a full working scenario analysis is summarized and solutions are proposed for the encountered problems.Most importantly, the development of ultimate stress curves during a full run of the distributing arm was researched as well as the reasons. The overturning moments generated at different pitch angles were also studied.The result shows that the finite element analysis can be employed to provide a more prehensive and accurate guide to the design of distributing arms. Key words:construction equipment; distributing arm;finite element analysis;ultimate stress 0引言 模态等为基础,将其分析结果作为设计依据。
然 胎带机是一种集混凝土输送及布料于一体的 而,结合研发同种机型的实际情况,笔者认为还需 专用作业车辆,是一种快进、高效的物料输送设备。
要计算分析布料臂架在不同作业长度、高度时的应 胎带机也称为移动式皮带输送机,主要由布料系 力、应变等结果,并进行归纳总结得出其规律,从而 统、上料系统、上车系统、下车系统,再辅以相应控 更加全面、准确地指导布料臀架设计。
制系统等构成。
其中布料臂架(桁架式多节伸缩 笔者以国内首次研制的50m大跨度胎带机布 臂)结构复杂、工况繁杂、边界条件不稳定,是胎带 料臂架为研究对象,根据工程设计规范、标准对比 机的重要承载部件,为保证设计使用的可靠,分析 国内外机型数据和有限元分析结果,采用参数化建 ...