目录
摘要---------------------------------------------------------------------------------------------1 前言---------------------------------------------------------------------------------------------2 1. 概述------------------------------------------------------------------------------------------6 1.1 随车起重机用途和特点--------------------------------------------------------------6 1.2 型号意义--------------------------------------------------------------------------------6 1.3 术语解释--------------------------------------------------------------------------------6
1.4 结构原理--------------------------------------------------------------------------------6
2. 伸缩臂架的计算----------------------------------------------------------------------------7 2.1 伸缩臂架的作用载荷及分析---------------------------------------------------------7 2.2 伸缩臂架的临界力的计算------------------------------------------------------------9 2.3 伸缩臂架的刚度校核------------------------------------------------------------------9 2.4 伸缩臂架的强度校核-----------------------------------------------------------------13 2.5 伸缩臂局部稳定性校核--------------------------------------------------------------17
2.6 伸缩臂的整体稳定性校核-----------------------------------------------------------19
3. 回转机构的选型---------------------------------------------------------------------------21 3.1 回转支承的受载情况-----------------------------------------------------------------21
3.2 回转支承选型所需技术参数--------------------------------------------------------21
4. 液压系统的设计计算---------------------------------------------------------------------26 4.1概述---------------------------------------------------------------------------------------26 4.2工作原理---------------------------------------------------------------------------------26 4.3 性能分析--------------------------------------------------------------------------------29 4.4 液压缸主要尺寸的确定--------------------------------------------------------------29 4.5 液压泵的选择--------------------------------------------------------------------------31 4.6 油箱的选择-----------------------------------------------------------------------------32
4.7 管件--------------------------------------------------------------------------------------33
5. 结论与展望---------------------------------------------------------------------------------35 5.1 结论--------------------------------------------------------------------------------------35
5.2 随车起重机的发展趋势--------------------------------------------------------------36
6. 毕业设计总结------------------------------------------------------------------------------38
7. 致谢------------------------------------------------------------------------------------------39
8. 参考文献------------------------------------------------------------------------------------40
摘要
本文概述了国内外伸缩式随车起重机的现状，并就有关型号的国内外随车起重机进行了比较。
介绍了我国伸缩式随车起重机的结构特点及各部分的工作原理。
着重对4吨两节伸缩式随车起重机的伸缩臂架和液压系统进行了优化设计。
运用金属结构的设计方法验证了金属结构部分主要是两节伸缩臂架的计算原理；另外，对回转机构也作了选型和设计。
最后对随车起重机的发展趋势作了简单分析。
关键词：伸缩式，随车起重机，臂架，优化，液压系统，回转机构
Abstract
This paper presents an overview of extendable crane-drivers, and a comparison with the concern home-made cranes. It introduces the structural characteristics and some of the principles of extendable crane-style cars. Focuses on two sections telescopic booms and hydraulic crane systems design. Use metal structure design methodology certification is a major part of the metal structure of two sections telescopic booms calculation principles; In addition, the rotation mechanism design also is made. Finally it shows the development trend of a simple crane driver analysis.
Keywords : telescopic type, assigned crane, booms, hydraulic system, Turnaround mechanism。