单梁桥式起重机结构设计分解.doc

摘 要 我做的毕业设计课题是单梁桥式起重机。单梁桥式起重机是一种轻型起重设备，它适用起重量为0.5~5 吨，适用跨度4.5～16.5米，工作环境温度C在-20℃到40℃范围内，适合于车间、仓库、露天堆场等处的物品装卸工作。桥架由一根主梁和两根端梁刚接组成。根据起重量和跨度，主梁采用普通工字钢和U形槽组合焊接形成。主梁和端梁之间采用承载凸缘普通螺栓法兰连接。提升机构采用CD型电葫芦。 此次设计的主要内容有：问题的提出、总体方案的构思，结构设计及对未知问题的探索和解决方案的初步设计，装配图、零件图等一系列图纸的设计与绘制，以及毕业设计说明书的完成。 关键词 ：起重机；桥式起重机；大车运行机构；小车运行结构；小车起升；结构桥架；主端梁 ABSTRACT The topic of my graduation design is list the beam bridge type derrick of design the list beam bridge type derrick is a kind of light heavy equipments, it start to apply the weight as 0.5~5 tons, apply to across degree 4.5~16.5 meters, the work environment temperature is -20℃ to 40℃.Inside scope, suitable for car, warehouse, open-air heap field etc. of the product pack to unload a work. The bridge was carried beam by a lord beam and 2 to just connect to constitute. According to weight with across a degree, lord beam adoption common the work word steel and U form slot combination weld formation. Lord beam and carry an of beam an adoption loading To good luck common stud bolt method orchid conjunction. Promote the organization adoption CD type an electricity bottle gourd. The main contents of this time design have: The problem put forward, conceive outline of total project, possibility design, structure design and draw towards doing not know a problem of investigate and solution of first step design, assemble diagram, spare parts diagram wait a series the design of the diagram paper with, end include graduation design manual of completion. Keywords: cranes;bridge type derrick ；During operation organization; Car running structure; Car hoisting structure; Bridge; Main girders. 目录 前 言 6 1 单梁桥式起重机的概述 7 1.1单梁桥式起重机的整体描述 7 1.1.2 单梁桥式起重机机构的特点 8 1.1.3 单梁桥式起重机的基本参数 8 1.1.4 桁架梁和箱形梁的比较 8 1.2 LD型电动单梁桥式起重机各部件的作用（位结构） 8 1.2.1 主梁 8 1.2.2 端梁 8 1.2.3主梁和端梁的联接 9 1.2.4 电动葫芦 9 1.2.5 大车 9 1.2.6 小车架 10 1.2.7 小车 10 1.2.8操纵室 10 1.3 运行机构 10 1.3.1 小车运行机构 11 1.3.2 大车运行机构 11 2 工作条件及设计要求 12 2.1 型式及设计的构造特点 13 2.2 选择电动葫芦的规格型号 14 2.3 主梁设计计算 14