1、 - I - 摘要摘要 随着经济建设的飞速发展，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， 市场上汽车起重机的需求也随之增加。本文对汽车起重机液压系统各个回 路的工作原理进行了分析并加以改进，通过计算，合理的选取液压系统各 元件，并对汽车起重机的主要机构重铁机构进行了详细说明和计算。设 计的汽车起重机能够满足使用功能的要求，安全可靠，操作使用方便，能 够适用于许多工程建设，具有很强的现实意义。 本设计首先介绍了起重机的国内外研究现状、发展趋势及研制中的关 键技术，以伸缩臂式起重机为基础，对液压起重机构进行了原理设计及方 案设计；确定
2、了主要结构的技术参数，对结构中的关键部分-重铁机构 进行结构设计，并进行验算校核，以保证其工作可靠性。 关键词关键词 汽车起重机；液压系统；工作原理；重铁机构；液压缸 - II - Abstract As the increasing development of the economic construction, our countries basic construction is rising. The scale of the construction, some basic construction, like the road transportation, airport, p
3、ort, water resources and hydro power, urban construction, has an ascending tend. The requirement of automobile lift on the market are going up. This essay analysis every return circuit of the hydraulic system and make advancement, and though calculating choosing the hydraulic system parts, and also
4、have a detailed description and calculation on the main mechanism of the automobile lift. The designed automobile lift can satisfy the required function, safe and reliable, convenient to operate, can apply to lots of the engineering construction, have a strong practical meaning. First of all,develop
5、ment overview,development trend of Auto crane in and abroad and the key technologies were presend .Automatic telescopic mechanism was take program design and principle analysis on it based on Auto cranes. Then technology parameters of the main structure was determined;the key part(balanced-weight me
6、chanism) of it was designed .Considering its reliability,we used finite element technology to verify its static strength. Keywords Auto cranes; Hydraulic system; function principle; balanced- weight mechanism; hydraulic oil tank. - I - 目录目录 摘要摘要 . I Abstract II 第章 绪论 . - 1 - 1.1 液压起重机 . - 1 - 1.2 液压传动应用于汽车起重机上的优缺点 . - 1 - 1. 3 液压起重机系统的意义及国内外现状 - 2 - 1.4 液压系统的基本组成 . - 3 - 1.5 本课题主要研究工作 . - 4 - 第 2 章 液压系统概述 . - 5 - 2.1 液压系统的类型 - 5 - 2.2 起重机液压系统功能、组成和工作特点 - 5 - 2.3 本课题的性能参数 - 7 - 第 3 章 液
