EQ5050五档手动变速器设计

学号101102073029毕业设计EQ5050汽车五档变速器设计教学系：汽车工程系指导教师：甘泉专业班级：车辆工程1073班学生姓名：陈育怀2011年6月摘要武汉理工大学华夏学院本科毕业论文-I-摘要本设计的题目是为中型载货汽车东风EQ5050设计变速器。该变速器为五档变速器，其中包括五个前进档和一个倒档。采用先进的整体式中间轴结构，三叉轴远距离操纵换档机构，使用锁销式同步器换档。该变速箱结构紧凑，体积小，传动效率高，有较大的速比范围，具有很好的经济性和动力性。设计说明书包括以下一些内容：1.绪论；2.结构方案论证及选择；3.变速器传动参数设计与计算，其中包括中心距、档位数，最大、最小传动比的确定，齿轮各参数的选择与计算，轴的直径的选择，最后还有精确的配齿；4.同步器设计理论及参数的确定；5.齿轮的强度校核,轴的强度和刚度校核,变速器中渐开线花键和半圆键的校核,轴承寿命的校核；6.变速器工艺性与经济性分析；7.列出本次设计的参考文献最后是对本次设计的感想和对指导教师的致谢。关键词传动比;中心距;同步器;强度;刚度;寿命Abstract武汉理工大学华夏学院本科毕业论文-II-AbstractThispaperismainlyaboutthegearboxdesignforEQ5050.Thegearboxincludes5forwardgearsofspeed,andonereversegear.Itusesadvancedintermediateaxisoftheoverallstructure,proposesthree-prongedaxleremotecontrolshiftinggearsagencies,anditsshiftorganizationuseslock-ringsynchronizer.Thetransmissioniscohesive,smallsize,hashightransmissionefficiencyandhasagoodfueleconomyandpower.Thispapermainlyconsistsofundermentionedchapters:1.Introduction;2.Modelcomparisonandselection;3.Parameterselectionandcalculation,Includingshaftdistance，thenumberofgears,thedetermineofthelargestandsmallestgearratio,gearvariousparameterschoiceandcomputation,axisdiameter`schoice,thefinalallocationofaccurateteethandsoon;4.Synchronizerdesigntheoryandanddeterminationofparameters;5.Checktheintensionofgears;Checktheintensionandrigidityofaxles;Checktheintensionofsplinesandwoodruffkeys;Checkthelift-spanofbearings;6.Aboutthetechnicalcharacteristicsandeconomypropertiesofthegearbox;7.Listallthosereferencesinthefinaldesign.Andfinallyisthethankstoinstructsteacherandtheexpressingtothisdesign.Keywordsgearratio;shaftdistance;synchronizer;intension;rigidity;lift-span目录武汉理工大学华夏学院本科毕业论文-1-目录摘要.......................................................................IAbstract......................................................................II第1章绪论..............................................................3第2章方案论证...............................................................42.1变速器的选择................................................................42.1.1两轴式变速器.............................................................42.1.2中间轴式变速器...........................................................42.2齿轮形式的选择..............................................................42.3换挡结构形式的选择..........................................................52.3.1直齿滑动齿轮换挡.........................................................52.3.2啮合套换挡...............................................................52.3.3同步器换挡...............................................................52.3.4倒挡形式的选择...........................................................52.4变速器结构方案简图..........................................................52.5具体细节零部件方案的确定....................................................62.5.1同步器的选择.............................................................62.5.2轴承形式的选择...........................................................62.5.3变速器轴上零件的定位.....................................................72.5.4变速器的壳体.............................................................72.6变速器操纵机构的方案分析....................................................72.7零部件结构方案分析..........................................................8第3章传动参数设计...........................................................93.1档位数选择..................................................................93.2最大传动比的确定............................................................93.3最小传动比的确定............................................................93.4确定各档传动比..............................................................93.5中心距的确定...............................................................10目录武汉理工大学华夏学院本科毕业论文-2-3.6齿轮参数选择...............................................................103.6.1相关知识................................................................103.6.2齿轮模数................................................................103.6.3压力角..................................................................103.6.4斜齿轮的螺旋角..........................................................113.6.5齿轮宽度................................................................113.6.6变位系数的选择..........................................................113.6.7各档齿轮的齿数分配......................................................123.6.8齿轮几何尺寸的计算......................................................133.7轴的直径选择...............................................................13第4章同步器参数的确定......................................................154.1惯性式同步器的工作原理.....................................................154.2同步器理论分析.............................................................154.3转动惯量的计算.............................................................16第5章相关参数校核..........................................................175.1齿轮强度校核...............................................................175.1.1齿轮损坏的原因及形式....................................................175.1.2齿轮弯曲强度校核........................................................175.1.3齿轮接触强度校核：......................................................195.2轴和轴承的校核.........