PAGE\*MERGEFORMAT26摘要中型货车驱动桥是汽车的各种总成中涵盖机械零件、部件、分总成等的品种最多的大总成，驱动桥在传动系统中起着举足轻重的作用。本次设计通过对给定的汽车相关参数，确定驱动桥的结构方案，分别计算出主减速器,差速器,驱动半轴和驱动桥壳的主要参数并确定其结构尺寸，并进行强度计算。在传统的设计计算得出来的数据基础上，用AUTOCAD软件绘出驱动桥二维CAD图。关键词:主减速器；差速器；AUTOCADABSTRACTTruckdriveaxleislargeassemblyofmechanicalparts,components,sub-assemblyandsoonthatassemblyinthecar.drivingaxleplaysanimportantroleinthedrivesystem.Bytheuseofgivenparameterstodeterminethestructureoftheprogramdriveaxle,andtocalculatetheparametersofthefinaldrive，differential,driveaxleanddriveaxlehousing.Andthentoidentifythemainparametersofthestructuresize,andstrengthcalculation.DrawingAUTOCADbythedatathathavebeencalculated.Keywords:driveaxle；differential；AUTOCAD目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc311978603"摘要PAGEREF_Toc311978603\hIHYPERLINK\l"_Toc311978604"ABSTRACTPAGEREF_Toc311978604\hIIHYPERLINK\l"_Toc311978605"第1章绪论PAGEREF_Toc311978605\h1HYPERLINK\l"_Toc311978606"第2章总体方案论证PAGEREF_Toc311978606\h3HYPERLINK\l"_Toc311978607"2.1非断开式驱动桥PAGEREF_Toc311978607\h3HYPERLINK\l"_Toc311978608"2.2断开式驱动桥PAGEREF_Toc311978608\h4HYPERLINK\l"_Toc311978609"2.3多桥驱动的布置PAGEREF_Toc311978609\h5HYPERLINK\l"_Toc311978610"第3章主减速器设计PAGEREF_Toc311978610\h7HYPERLINK\l"_Toc311978611"3.1主减速器结构方案分析PAGEREF_Toc311978611\h7HYPERLINK\l"_Toc311978612"3.1.1螺旋锥齿轮传动PAGEREF_Toc311978612\h7HYPERLINK\l"_Toc311978613"3.1.2结构形式PAGEREF_Toc311978613\h8HYPERLINK\l"_Toc311978614"3.2主减速器主、从动锥齿轮的支承方案PAGEREF_Toc311978614\h9HYPERLINK\l"_Toc311978615"3.2.1主动锥齿轮的支承PAGEREF_Toc311978615\h9HYPERLINK\l"_Toc311978616"3.2.2从动锥齿轮的支承PAGEREF_Toc311978616\h10HYPERLINK\l"_Toc311978617"3.3主减速器锥齿轮设计PAGEREF_Toc311978617\h10HYPERLINK\l"_Toc311978618"3.3.1主减速比的确定PAGEREF_Toc311978618\h10HYPERLINK\l"_Toc311978619"3.3.2主减速器锥齿轮的主要参数选择PAGEREF_Toc311978619\h12HYPERLINK\l"_Toc311978620"3.4主减速器锥齿轮的材料PAGEREF_Toc311978620\h14HYPERLINK\l"_To