摘要近年来，随着我国现代化建设的高速发展，各种国家建设的工作量就随之越来越大，所以现代机械得到了广泛的应用，而减速器就是各种现代机械中的一个很重要的部件，减速器在原动机和工作机或执行机构之间起匹配转速和传递转矩的作用,已被电力、冶金、煤炭、化工、矿山、港口等各行各业广泛采用。本设计讲述了带式运输机的传动装置——二级圆柱齿轮减速器的设计过程，设计的主要内容包括：传动方案的分析和拟定;电动机的选择与传动装置运动和动力参数的计算;传动件(齿轮传动、带传动)的设计计算;轴的设计计算；轴承及其组合部件设计；附件的设计；箱体的设计；运用AutoCAD软件进行二级圆柱齿轮减速器的二维平面零件图的绘制和以及设计说明书的编写等。关键词：减速器电动机齿轮啮合轴传动传动效率AbstractInrecentyears,withtherapiddevelopmentofChina'smodernizationconstruction,theconstructionofvariouscountriesworkloadisincreased,sothemodernmachineryhasbeenwidelyused,andthespeedreducerisavarietyofmodernmachineryofaveryimportantparts,speedreducer,speedandtorquetransferfunctionbetweentheoriginalmotivationandjobmachineorimplementingagencies,hasbeenwidelyusedinelectricpower,metallurgy,coal,chemical,mining,portsandotherindustries.Thedesignprocessofthisdesignonthetransmissionwithtwocylindricalgearbeltconveyorreducer,themaincontentsofthedesigninclude:transmissionschemeanalysisanddrawup;calculationofmotorselectionandtransmissionofmotionandpowerparameter;transmissionparts(geartransmissionandbelttransmission）design;calculation;calculationofshaftdesign;bearinganditscombinationofcomponentdesign;accessorydesign;thedesignof2Dpartdrawing;preparationoftwocylindricalgearreducerusingAutoCADsoftwareofdrawinganddesignspecificationetc..Keywords:Reducer,Motor,Gearmeshing,Driveshaft,Thetransmissionefficiency目录摘要..........................................................................................................Abstract..................................................................................................第一章概述......................................................................................11.1课题........................................................................................11.2设计主要内容..........................................................................1第二章机械传动系统的总体设计...............................................12.1选择电动机类型和形式......................................................