汽车起重机设计(毕业论文)

I 摘 要

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，市场汽车起重机的需求也随之增加。本文通过对徐工50吨汽车起重机主臂进行研究，进一步进行主臂设计，通过计算对主臂的三铰点、主臂的长度、及每节臂的长度、液压缸尺寸进行确定，选择零部件，确定主臂伸缩方式及主臂内钢丝绳的缠绕方法，通过SOLID WORKS软件对主臂进行三维建模。

关键词：50吨汽车起重机、主臂设计、三铰点、伸缩方式、三维建模

II Abstract

With the rapid development of economic construction, China's infrastructure is gradually

increase the intensity, road traffic, airports, ports, water conservancy and hydropower,

municipal construction of infrastructure such as the scale of construction is also growing,

crane truck crane market demand with the increase. Based on the Xu Gong 50 tons of truck

crane boom study, further boom design, by calculating the main arm of the three hinges, the

main arm length, and the length of each arm, hydraulic cylinder size identify, select Parts and

components, identify the main telescopic arm and the boom in the way of winding rope

method, SOLID WORKS software on the main arm for three-dimensional modeling.

Keywords: 50-ton truck crane，the boom design，the three hinge points ，stretching，three-dimensional modeling

III 目录

摘 要 .......................................................... I

ABSTRATE ....................................................... II

1 绪论 ....................................................... 1

起重机械的工作特点及其在国民经济中的作用 ....................................................................................... 1

国内汽车起重机的发展概况和发展趋势 ...................................................................................................... 2

国内汽车起重机的发展概况 .......................................................................................................................... 2

国内汽车起重机发展趋势 ............................................................................................................................... 3

国外汽车起重机发展概况及发展趋势 ........................................................................................................... 4

国外汽车起重机发展概况 ............................................................................................................................... 4

国外汽车起重机发展趋势 ............................................................................................................................... 5

SOLID WORKS软件的介绍 ........................................................................................................................................... 6

本课题内容及重要意义 ......................................................................................................................................... 7

2 50吨汽车式起重机的主要技术参数和工作级别 ........................... 8

50吨汽车式起重机的主要技术参数 ............................................................................................................... 8

50吨汽车起重机的工作级别............................................................................................................................ 10

3 50吨汽车起重机主臂尺寸确实定 .................................... 13

吊臂跟部铰点位置确实定 .................................................................................................................................. 13

吊臂各节尺寸确实定 ............................................................................................................................................ 14

变幅液压缸铰点确实定 ....................................................................................................................................... 15

吊臂截面的选择及截面尺寸确定 ................................................................................................................... 17

4 主臂伸缩机构的设计计算 ......................................... 19

臂架伸缩机构的驱动形式 .................................................................................................................................. 19

臂架伸缩液压缸的计算及选择 ........................................................................................................................ 20

缸筒内径计算 ...................................................................................................................................................... 20

活塞杆直径 ........................................................................................................................................................... 21

缸筒壁厚及外径计算 ....................................................................................................................................... 23

5 零部件的选择 ................................................. 24

钢丝绳的计算和选择 ............................................................................................................................................ 24

钢丝绳结构形式的选用 .................................................................................................................................. 24