毕业设计（论文）-液压起重机设计（起升机构）.docx

PAGE 8 PAGE 8 液压起重机设计（起升机构）  摘要 在生产工作的过程中，工程机械发挥了其巨大作用，液压汽车起重机因为其方便移动、提升性能极好、能够满足各种各样不同的工作环境的生产作业要求而获得极大的工程机械市场需求。 本文阐述了液压起重机的市场发展现状、不足和发展趋势。本文还进行20t汽车起重机的设计计算，结合徐工集团和三一重工的汽车起重机产品实例，设计的部分包括汽车起重机总体尺寸确定、底盘参数结构设计、三铰点位置确定、主吊臂长度、吊臂节数和长度、吊臂伸缩方式、变幅液压缸设计及校核、液压起升机构的设计以及相关起升部件的选型。最后对本次设计进行经济性指标分析，确保了设计的经济性。同时，在设计计算完成后，完成了汽车起重机、吊钩、液压缸等图纸的绘制。 关键词：液压起重机；三铰点；吊臂设计；起升机构  Abstract In the process of production, the construction machinery plays a huge role. Because of its convenient movement, excellent lifting performance, and being able to meet the production requirements of various working environments, the hydraulic truck crane has obtained great market demand for construction machinery. This paper describes the market development status, shortage and development trend of hydraulic crane. In this paper, the design and calculation of 20t hydraulic crane are also carried out. Combined with the example of truck crane products of XCMG and Sany Heavy Industry, the design part includes the determination of overall dimensions of truck crane, the design of chassis parameter structure, the determination of three hinge points, the length of main boom, the number and length of boom sections, the expansion and contraction mode of boom, the design and verification of luffing hydraulic cylinder, and the design of hydraulic lifting mechanism And selection of relevant lifting parts. Finally, the economic index of the design is analyzed to ensure the economy of the design. At the same time, after the completion of the design and calculation, the drawings of the truck crane, hook, hydraulic cylinder and so on are drawn. Keywords: hydraulic crane; three hinge points; boom design; lifting mechanim  PAGE 3 PAGE 3 目录 23961 摘要 Ⅰ 23961 目录 Ⅲ TOC \o "1-2" \h \u 23961 1绪论 1 17954 1.1液压起重机简介 1 22440 1.2液压起重机的发展趋势 1 22440 1.3设计方案论述 3 22742 2液压起重机底盘数确定设计 5 12477 2.1汽车起重机的基本参数 5 32631 2.2轮轴布置方案 5 13717 3变幅机构三铰点的确定 10 11051 3.1吊臂根部铰点位置的确定 10 4727 3.2变幅液压缸铰点的确定 13 18940 4 箱形吊臂伸