62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62ABSTRACTThetopicofmygraduationdesignislistthebeambridgetypederrickofdesignthelistbeambridgetypederrickisakindoflightheavyequipments,itstarttoapplytheweightas0.5~5tons,applytoacrossdegree4.5~16.5meters,theworkenvironmenttemperatureis-20℃to40℃.Insidescope,suitableforcar,warehouse,open-airheapfieldetc.oftheproductpacktounloadawork.Thebridgewascarriedbeambyalordbeamand2tojustconnecttoconstitute.Accordingtoweightwithacrossadegree,lordbeamadoptioncommontheworkwordsteelandUformslotcombinationweldformation.LordbeamandcarryanofbeamanadoptionloadingTogoodluckcommonstudboltmethodorchidconjunction.PromotetheorganizationadoptionCDtypeanelectricitybottlegourd.Themaincontentsofthistimedesignhave:Theproblemputforward,conceiveoutlineoftotalproject,possibilitydesign,structuredesignanddrawtowardsdoingnotknowaproblemofinvestigateandsolutionoffirststepdesign,assemblediagram,sparepartsdiagramwaitaseriesthedesignofthediagrampaperwith,endincludegraduationdesignmanualofcompletion.Keywords:cranes;bridgetypederrick；Duringoperationorganization;Carrunningstructure;Carhoistingstructure;Bridge;Maingirders.62毕业论文目录前言................................................................................................................61单梁桥式起重机的概述...............................................................................71.1单梁桥式起重机的整体描述............................................................71.1.2单梁桥式起重机机构的特点.................................................81.1.3单梁桥式起重机的基本参数.................................................81.1.4桁架梁和箱形梁的比较.........................................................81.2LD型电动单梁桥式起重机各部件的作用（位结构）..................81.2.1主梁.........................................................................................81.2.2端梁.........................................................................................81.2.3主梁和端梁的联接.................................................................91.2.4电动葫芦.................................................................................91.2.5大车.........................................................................................91.2.6小车架...................................................................................101.2.7小车.......................................................................................101.2.8操纵室...................................................................................101.3运行机构..........................................................................................101.3.1小车运行机构.......................................................................111.3.2大车运行机构...........................
