设计简介
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
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
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 -2-
1.2国外履带起重机发展状况 -3-
1.3国内履带起重机发展状况 -5-
1.4履带式起重机的发展趋势 -6-
1.5履带起重机臂架简介 -7-
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 - 25 -
3.3副臂的计算 - 26 -
3.3.1最大起重量工况计算 - 26 -
3.3.2最长副臂工况计算 - 36 -
3.4撑杆的计算 - 36 -
3.4.1固定副臂撑杆整体稳定性的计算 - 36 -
3.4.2固定副臂撑杆下铰点销轴和单耳计算 - 39 -
3.5 拉索的计算 - 40 -
3.5.1 主臂拉索计算 -40-
3.5.2 固定副臂拉索计算 -41-
结 论 -43-
致 谢 -44-
参 考 文 献 -45-
