安徽建筑工业学院
毕 业 设 计 (论 文)
专 业 机械设计制造及其自动化 课 题 塔式起重机的吊臂设计
摘 要
依据GB/T13752-92《塔式起重机设计规范》，用多跨连续外伸梁结构方式,以塔机单吊点水平起重臂作为研究对象,分析了其在各种载荷作用下起升平面内受力情况，根据臂架的工作特点和性能要求,对吊点位置和型钢合理优化设计,建立了臂架控制截面应力分布最均衡和臂架最轻的结构优化数学模型,编制了臂架结构应力计算过程,选取不同的校核段进行了详细计算,并将校核段的不同选择对计算结果的影响进行了对比分析. 计算表明合理优化设计后典型工况下臂架各危险截面的应力分布和臂架重量均能够使设计的塔式起重机吊臂结构优、材料省、可靠性高。 关键词 起重臂 优化设计 截面 校核
Abstract
Based GB/T13752-92 \structure extended approach to single-tower suspension points and the boom for the study, analyzed the various loads in lifting plane within the force, according to arm work characteristics and performance requirements, right lifting positions and optimal design of steel and reasonable to establish the stress distribution in the control section boom and jib the most balanced lightest structural optimization model is developed arm structural stress calculation, select a different section of a detailed calculation of check, and check the different options section of the calculation results were compared. calculations show that the optimal design of a reasonable condition after the boom of the dangerous section of typical stress Boom weight distribution and are able to make the design of the tower crane boom structure of good, materials provinces, and high reliability. Key words ： boom optimal design section Checking
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目 录
摘要????????????????????????????????? Abstract??????????????????????????????? 第1章 绪 论?????????????????????????????
1.1 本论文的背景和意义?????????????????????? 1.2 本论文的主要方法和研究进展??????????????????? 1.3 本论文的主要内容????????????????????????
第二章 塔机小车吊臂设计???????????????????????
2.1 吊臂的主要结构形式及主要尺寸?????????????????? 2.1.1 吊臂的主要材料???????????????????????? 2.1.2 吊臂的机构形式???????????????????????? 2.1.3 吊臂的尺寸?????????????????????????? 2.1.4 吊点位置的确定???????????????????????? 2.1.5 吊臂运输单元划分??????????????????????? 2.2 吊臂计算简图、载荷、内力计算及在和组合???????????? 2.2.1 吊臂自重小车及变幅机构引起的内力????????????? 2.2.2 吊重引起的内力???????????????????????? 2.2.3 水平反力HA（HB）产生的偏心弯矩???????????????? 2.2.4 风载引起的内力???????????????????????? 2.2.5 回转水平惯性力???????????????????????? 2.2.6 起升绳牵引力产生的轴心压力?????????????????
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