毕业论文设计《QY16U型汽车起重机吊臂及伸缩机构设计说明书》.doc

摘 要 在我国，汽车起重机发展已有六十多年的历史了，由于受到客观条件的限制，一度发展较慢，进入九十年代发展迅速，但与国际先进水平还相差很远，主要表现在产品质量的稳定性，自动化，智能化等方面。随着经济建设的迅速发展，我国的基础建设力度正逐渐加大，道路交通，机场，港口，水利水电，市政建设等基础设施的建设规模也越来越大，汽车起重机的市场需求也随之增加。 本文是对QY16U型汽车起重机的吊臂伸缩机构进行设计，确定吊臂主要尺寸、质量参数，确定各部件、总成的相互位置关系，利用Solidworks完成QY16U汽车起重机吊臂伸缩机构的三维实体装配模型，利用Ansys对结构件进行强度校核，对确定中、小型汽车起重机的设计方案具有很强的现实意义。 关键词：汽车起重机 ；吊臂 ； 伸缩机构 ABSTRACT The design and production of the truck crane have more than 50 year’s history in our country. The development of truck crane, however,has slowed down for some objective reasons. Since 1990’s, it was accelerated in our country, but the products still could not reach the advanced international level in the quality stability, autnation, and intelligent. With the rapid development of economic construction, Chinas infrastructure is gradually improving the intensity. Road traffic, airports, ports, water conservancy and hydropower, municipal construction of infrastructure such as the scale of construction is also rapidly growing. Crane truck crane market is also on demand with the increase. The thesis is the study of the type of truck crane QY16U design and the discourse upon choices of Telescopic crane agency. The overall layout and stability, the design of the lifting mechanism and calculation methods. It is also discussed chiefly concerns with how to determine the whole machine size , quality parameters, and how to determine the components, assembly location of the mutual relations. The using of Solidworks to complete the QY16U telescopic crane agency of three-dimensional solid model, and the using of Ansys to analyse the strength of structural, have a strong practical significance to identify the small and medium-sized truck crane design. Keywords: truck crane ； Telescopic ； crane agency 目 录 第一章 绪论 1 1.1 概论 1 1.2 汽车起重机的发展趋势 1 1.2.1 广泛采用液压技术 1 1.2.2 通用与专用起重机 2 1.2.3 重视“三化”逐步过渡采用国际化标准 2 1.2.4发展一机多用产品 2 1.2.5采用新技术、新材料、新结构、新工艺 3 1.2.6国外汽车起重机发展过程及主要机种 3 1.3 汽车起重机现代设计方法概述 4 1.3.1 汽车起重机现代设计方法概述计算机辅助设计（CAD） 5 1.3.2 模块化设计