Abstract:Thegraduationprojectisabridgecraneforthegraduationfieldworkdonebythetonnagelevelspecifictothedesign.AsChina'smanufacturingindustry,moreandmoreapplicationscranetowhichindustrialproduction.Carryaheavyloadinthefactory,machinepartsupanddown,theworkofliftingpartsofshipment,assemblylineworkshouldbefixedonthecraneisused.Thelargestnumberofspeciesofcranes,bothinthesizeofthefactoryintotheapplicationissmalltonnagecranes,bridgecranessmalltonnageoflightweightpartsforawiderangeoflifting,inChina'smachineryindustryplaysaveryimportantposition.However,ourcurrentapplication,orcopylargecranebehindthetechnologyproducedabroad,andhasbeenappliedinthefactoryformanyyears,andsame70to80yearsofproducts,bothinqualityorfunctionalityarenotgrowingtomeettheindustrialdemand.Howtodesignitthelowestcost,rationalizethelayout,functionmodernizationisthesubjectofourstudy.Thisdesignisforsmalltonnagebridgecranedesign,themaindesignelementsare16/3.2tcranestructureandoperationofinstitutions,includingthebridgestructure,calculationandcheckingthelayout,themainbeamstructurecalculationandchecking,endbeamscalculationandchecking,themainendbeamconnectandrunthecartandcheckingbodypartsofchoice.Keywords：Crane；Themovingmainframe；Bridge；Mainbeamandendbeam；Smalltonnage-1-目录Error:Referencesourcenotfound一概述··············································································11.单梁桥式起重机的工作方式················································12.单梁桥式起重机的机构特点················································13.桁架梁和箱的比较···························································14.LD型电动单梁桥式起重机各部件作用····································15.运行机构······································································36.发展趋势······································································47.工作条件及设计要求·························································48.型式及设计的构造特点······················································5二选择电动葫芦的型号规格·······················································6三主梁设计计算····································································61.主梁断面几何特性····························································62.主梁强度的计算·······························································73.主梁刚度的计算······························································104.主梁稳定性的计算···················································...
