毕业设计zza式装载机动力变速换挡箱

ZZ-A型装载机动力换挡变速器院系：机电与自动化学院专业班：机电1105班姓名：马强学号：20111100194指导教师：刘华英2015年5月ZZ-A型装载机动力换挡变速器ZZ-ATypeLoaderPowerShiftTransmission目录摘要....................................................错误!未定义书签。Abstract...............................................................II绪论....................................................................11装载机基本参数的选定.................................................21.1装载机发动机概述....................................................31..2装载机发动机型号选定...............................................32变速器结构设计.......................................................52.1设计方案确定........................................................52.2传动路线确定........................................................63变速器轴和轴承的设计与选择...........................................73.1变速器轴的设计......................................................73.2轴的强度计算........................................................83.2.1齿轮和轴上的受力计算..............................................93.2.2轴的强度计算.....................................................103.2.3轴的刚度计算.....................................................133.3轴承的选择与校核...................................................163.3.1Ⅰ轴的轴承选择与校核.............................................163.3.2Ⅱ轴的轴承选择与校核.............................................163.3.3Ⅲ轴的轴承选择与校核.............................................173.3.4Ⅳ轴的轴承选择与校核.............................................173.3.5Ⅴ轴的轴承选择与校核.............................................184齿轮的设计及校核....................................................194.1配齿及齿轮基本参数的确定...........................................194.1.1配齿.............................................................194.1.2齿轮的基本参数选定...............................................194.2齿轮主要参数的确定.................................................204.3齿轮校核...........................................................234.3.1齿轮材料的选择...................................................234.3.2计算各轴转矩......................................................244.3.3齿轮强度计算.....................................................245换挡离合器的选择....................................................305.1换挡离合器机构的选择与工作原理.....................................305.2换挡离合器机构的设计...............................................315.2.1摩擦片材料.......................................................315.2.2摩擦偶件数量P....................................................315.2.3摩擦副Z..........................................................325.2.4摩擦片表面沟槽...................................................325.2.5摩擦片内外径.....................................................325.2.6花键的设计.......................................................335.2.7摩擦片的厚度.....................................................336箱体的设计和润滑方式选择............................................336.1箱体的设计.........................................................346.2润滑方式的选择.....................................................34结论...................................................................35致谢...................................................................36参考文献...............................................................37I摘要轮式装载机是铲土运输机械类，是一种广泛用于公路、铁路、建筑、水电、港口和矿山等建设工程的土石方施工机械。具有作业速度快、效率高、机动性好、操作轻便等优点，对于加快工程建设速度，减轻劳动强度，提高工程质量，降低工程成本都发挥着重要的作用，是现代机械化施工中不可或缺的设备之一。变速器它的结构复杂，对材料要求高，加工难度大。其功能是将发动机的转矩和扭矩改变。使其在相应的场合完成相应的工作。本文首先确定变速器主要部件的结构型式和主要设计参数，在分析变速器各部分结构形式、发展过程及其以往形式的优缺点的基础上，确定了总体设计方案，采用传统设计方法对变速器各部件齿轮、轴进行设计计算并完成校核。最后运用AUTOCAD完成装配图和主要零件图的绘制。关键词：轮式装载机变速器齿轮轴；IIAbstractWheelloadershovelsoiltransportationmachinerybelongsto,isawidelyusedinroad,railway,construction,waterandelectricity,portsandminingandotherconstructionengineeringconditionsconstructionmachinery.Withhomeworkspeed,highefficiencyandconvenientoperationflexibilitygood,etc,andtospeedupeng-ineeringconstructionspeed,reducelaborintensity,improvingengineeringquality,reduceprojectcostsplayanimportantroleinmodernmechanicalconstruction,isoneoftheindispensableequipment.Transmissionistransmissionsystemimportant3big,itisoneofthecomplicatedstructure,andthematerialofthedemandishigh,processingisdifficult.Itsfunctionistochangefromenginetorqueandspeed,andmakeitworkenvironmentwithstaffandplaytheirduerole.Thispaperfirstdeterminethetransmissionofthemainpartsofstructureandmaindesignparameters,andontheanalysisofvariouspartsstructure,transmissionisdevelopingprocessandtheadvantagesanddisadvantagesofpastform,onthebasisofoveralldesignschemedetermined,thetraditionaldesignmethodofthetransmissionpartsgear,axisandsynchronizerfordesigncalculationandcompletechecking.FinallyusingAUTOCADKeyworlds:completeassemblydrawingsandmaincomponentdrawing.III目录摘要....................................................错误!未定义书签。Abstract...............................................................II绪论....................................................................11装载机基本参数的选定.................................................21.1装载机发动机概述....................................................31..2装载机发动机型号选定...............................................32变速器结构设计.................