该设计介绍了垃圾搬运起重机的主要组成结构及其各结构的作用。主要对小车和大车的驱动系统，起升系统和桥架进行了优化设计。为了减轻起重机自重，并且使结构紧凑，本设计针对大车，小车不同的驱动要求分别采用了分别驱动方式和集中驱动方式。驱动系统则统一采用制动器、减速器和电动机组合成一体的“三合一”驱动型式设计，其中重点在于选择各成品部件，并根据其特性和技术参数选择匹配的小车架。针对起升机构，本设计进行了起升电机，减速器和制动器的选用以及卷筒和钢丝绳的设计和校核，使其满足起重量，起升速度的要求，达到初定的工作级别。桥身采用偏轨箱形双梁，这样设计的好处在于不仅有效的减轻了起重机整体自重，更能明显得增强桥身的刚度，使桥身不易变形，延长起重机的使用寿命。关键词垃圾搬运起重机；优化设计；驱动系统；“三合一”驱动型式；起升机构；偏轨箱形双梁AbstractThemainstructureanditsactionofbridgewastehandlinggrabcranearedesigned.Trolleyandthebridgetruckdrivingsystemandthebridgewereoptimizedtoalleviatecraneweight,andmakecompactstructure.Thedesignadoptsthemethodofbeingseparatelydrivenandbeingdriventogether,accordingtothedifferentrequirementsoftrolleyandbridgetruck.Drivingsystermismadeupofbraker,reducerandmotor,whichisthetypeofthreeinone.Thedesignfocusesonthechoiceoffinishedparts,andaccordingtoitscharacteristicsandtechnicalparameters,thematchingtrolleyframeisselected.Theselectionandcheckofhoistmotor,reducerandbrakeraremade.Andthenthedesignandcheckoftheropeanddrumthatmeetwithrequirementsofliftingweightandtherate.Andthenachievetoinitialworkinglevel.Bridgeadoptsbias-railbox-beams,thebenefitsofthisdesignnotonlyiseffectiveinreducingtheoverallcraneweight,butalsocanincreasethestiffnessofbridge,whichmakebrightnottodeformeasily,extendthelifeofthecrane.KeywordsBridgeWasteHandlingGrabCrane；OptimumDesign；Three-in-oneTypeDriving；LiftingMechanism；Bias-railBox-beamsTOC\o"1-3"\h\z\uHYPERLINK\l"_Toc375074922"摘要PAGEREF_Toc375074922\hIHYPERLINK\l"_Toc375074923"AbstractPAGEREF_Toc375074923\hIIHYPERLINK\l"_Toc375074924"第1章绪论PAGEREF_Toc375074924\h1HYPERLINK\l"_Toc375074925"1.1课题背景PAGEREF_Toc375074925\h1HYPERLINK\l"_Toc375074926"1.2起重机的发展历史PAGEREF_Toc375074926\h1HYPERLINK\l"_Toc375074927"1.3垃圾搬运起重机的发展背景及现状PAGEREF_Toc375074927\h1HYPERLINK\l"_Toc375074928"1.4垃圾搬运起重机设计的主要工作PAGEREF_Toc375074928\h2HYPERLINK\l"_Toc375074929"第2章桥式垃圾搬运起重机的概况PAGEREF_Toc375074929\h3HYPERLINK\l"_Toc375074930"2.1桥式垃圾搬运起重机的功用PAGEREF_Toc375074930\h