摘 要 ································································································· I Abstract ································································································· II 第1章 履带起重机概述 ······························································· - 1 -
1.1履带起重机简介 ··········································································· - 1 - 1.2国外履带起重机发展状况 ···························································· - 1 - 1.3国内履带起重机发展状况 ···························································· - 3 - 1.4履带式起重机的发展趋势 ···························································· - 5 - 1.5履带起重机臂架简介 ··································································· - 5 - 1.6 个人工作重点——臂架系统设计 ··············································· - 8 -
第2章 臂架的结构形式 ······························································· - 9 -
2.1设计参数 ······················································································· - 9 -
2.1.1作业工况 ································································································ - 9 - 2.1.2机构速度 ································································································· - 9 -
2.2臂架的结构型式 ··········································································· - 9 - 2.3.经济性分析 ················································································· - 10 -
第3章 臂架系统的计算 ····························································· - 12 -
3.1所选材料许用应力计算 ····························································· - 12 -
3.1.1 16Mn(Q345B)许用应力计算 ······························································ - 12 - 3.1.2 40Cr许用应力计算 ············································································· - 13 -
3.2主臂的计算 ················································································· - 13 -
3.2.1最大起重量工况计算 ·········································································· - 14 - 3.2.2最长主臂工况计算 ·············································· 错误！未定义书签。
3.3副臂的计算 ······················································ 错误！未定义书签。
3.3.1最大起重量工况计算 ·········································· 错误！未定义书签。 3.3.2最长副臂工况计算 ·············································································· - 22 -
3.4撑杆的计算 ················································································· - 23 -
3.4.1固定副臂撑杆整体稳定性的计算 ······················································ - 23 - 3.4.2固定副臂撑杆下铰点销轴和单耳计算 ·············································· - 26 -
3.5 拉索的计算 ················································································ - 26 -
3.5.1 主臂拉索计算 ····················································································· - 26 -
要完整说明书和图纸找扣扣 二五一一三三四零八
要完整说明书和图纸找扣扣 二五一一三三四零八 3.5.2 固定副臂拉索计算 ············································································· - 27 -
结 论 ·························································································· - 29 - 致 谢 ···························································································· -44- 参 考 文 献 ··················································································· - 31 -
大连水产学院本科毕业论文（设计） 摘 要
履带起重机是广泛应用于电力建设、市政建设、桥梁施工、石油化工、水利水电等行业的一种起重运输设备，随着经济建设的发展，对其需求越来越大，对其性能的要求也越来越高。
本次设计的35吨履带起重机是35吨履带起重机的臂架系统设计，臂架是履带式起重机的重要构件之一，臂架设计得是否合理，直接影响着起重机的起升能力。
本文主要内容包括：国内外履带起重机发展状况的比较，桁架臂的介绍，主臂、副臂及撑杆结构设计，臂架的强度、刚度和稳定性计算，臂架连接处强度的校核。同时完成臂架系统装配图，主臂、副臂及撑杆的装配图和相关零部件的工程图。设计过程采用Pro/E软件进行三维实体建模，并进行虚拟装配，最后应用其工程图模块转化为二维工程图。本次设计的35吨履带起重机参考了抚顺挖掘机制造责任有限公司的QUY35履带起重机，并且严格按照《起重机设计规范》、《机械设计手册》进行设计，其性能和质量满足相关要求。
关键词：履带起重机，臂架，强度，稳定性
I
大连水产学院本科毕业论文（设计） The Boom Design of 35t Crawler Crane
Abstract
Crawler crane is a kind of hoisting equipment which is widely used in electric power construction, city planning construction, bridge construction, petroleum chemical plant construction and water conservancy etc. industry. Along with the development of economic in our country, the requirement of crawler crane is larger and larger, and the request of the capability is higher and higher.
The 35t crawler crane designed is a practical project researched and developed independently by The Construction Machinery Research Center YLYThe design is about the 35t crawler crane’s boom system. The boom is one of the key parts of crawler crane, which affects to the lifting capacity of the crane directly.
The main content of the paper includes the crawler crane’s development comparison domestic with abroad, a brief introduction of lattice boom, the structure design of the main boom, the fixed fly jib, and the fixed jib strut, the calculation of the strength and stability of the boom system, the checking of strength of strength of connects. While at the same time planar engineering drawing must be done, such as the assembling of the boom system, the fixed jib strut and the related parts. We use the Pro-E software to design the 3D entity, and make dummy assembly. And then, the 3D entity is transformed to the planar engineering drawing with the Pro/E planar engineering drawing module. In the design process, we refer to the QUY35 crawler crane of Funshun Excavator Corporation LTD., and accord to the《Crane Design Standard》and the《Machine Design Handbook》strictly. Its capability and quality meet the requirement.
Key Words：Crawler Crane，Lattice Boom，The Strength，The Stability
II
大连水产学院本科毕业论文（设计） 第1章 履带起重机概述 第1章 履带起重机概述
1.1履带起重机简介
履带起重机是将起重作业部分装在履带底盘上、行走依靠履带装置的流动式起重机，可以进行物料起重、运输、装卸和安装等作业。履带起重机具有接地比压小、转弯半径小、可适应恶劣地面、爬坡能力大、起重性能好、吊重作业不需打支腿、可带载行驶等优点，并可借助更换吊具或增加特种装置成为抓斗起重机、电磁起重机或打桩机等，实现一机多用，进行桩工、土石方作业，在电力建设、市政建设、桥梁施工、石油化工、水利水电等行业应用广泛。履带起重机的带载行驶、臂长组合多、起重性能好、作业高度和幅度大是其独有的无与伦比的优势，具有其他起重设备无法替代的地位。
随着经济的高速发展，国家基本建设的规模越来越大，需要吊运的物品的质量、体积和起升高度都越来越大，履带起重机愈来愈显示其优越性，市场容量迅速上升，引起了国际知名厂商的关注，国内起重机行业也兴起了履带起重机开发热潮。
1.2国外履带起重机发展状况
目前，国外专业生产履带起重机的厂家很多，德国的主要生产厂家有利勃海尔（Ｌｉｅｂｈｅｒｒ）公司、特雷克斯——德马格（Ｔｅｒｅｘ—Ｄｅｍａｇ）公司、森尼波根（Ｓｅｎｅｂｏｇｅｎ）公司，美国主要生产厂家有马尼托瓦克（Ｍａｎｉｔｏｗｏｃ）公司、林克——贝尔特（Ｌｉｎｋ＿ｂｅｌｔ）公司、Ｐ＆Ｈ公司，日本的主要生产厂家有神钢（Ｋｏｂｅｌｃｏ）公司、日立住友（Ｈｉｔａｃｈｉ—Ｓｕｍｉｔｏｍｏ）公司和石川岛（ＩＨＩ）公司，其中利勃海尔、特雷克斯——德马格、马尼托瓦克、神钢、日立住友等公司产品系列较全，市场占有率较高。表１列出了国外履带起重机主要生产公司系列型谱。
１．德国利勃海尔（Ｌｉｅｂｈｅｒｒ）公司
利勃海尔公司，一个以塔机起家、拥有５０余年历史的家族式跨国公司，是世界著名起
重机生产厂家之一，该公司的产品技术先进，其生产的ＬＲ系列履带起重机最大起重量已达１２００吨。 该公司产品主要特点有：系统为全液压驱动、电液比例控制，可实现无级调速且传动平稳，具备完善的自拆装功能，主副钩可单独工作亦可交替使用，自动安全保护合理，大吨位履带起重机安装全球卫星定位通讯系统，厂家对其产品进行实时监控，另外为充分发挥臂架的起重能力、提高整机的稳定性大吨位履带起重机均增加了超起装置。目前的产品系列为ＬＲｌｌ００型１０４吨、ＬＲｌｌ３０型１３７吨、ＬＲｌｌ６０型１６０吨、ＬＲｌ２００型２００吨、ＬＲ１２８０型２８０吨、ＬＲｌ３５０型３５０吨、ＬＲｌ４００型４００吨、ＬＲｌ７５０型７５０吨、ＬＲｌ８００型８００吨、ＬＲｌ１２００型１２００吨，在中国市场上销售的履带起重机主要有ＬＲｌ８００型８００吨、ＬＲｌ７５０型７５０吨、ＬＲｌ４００型４００吨、ＬＲｌ３５０型３５０吨和ＬＲｌ２８０型２８０吨级履带起重机。
- 1 -要完整说明书和图纸找扣扣 二五一一三三四零八
