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1、Kd1080型载货汽车后桥总成设计摘要本设计为中型载货汽车的后桥总成设计。在本设计中后桥为驱动桥,是汽车传动系主要总成之一,具有承载车身和驱动汽车的功用。后桥设计应满足汽车动力性,经济性的要求,并符合汽车运动学规律。根据本车的各项具体参数,经过必要的论证分析,确定了本次所设计的驱动桥的结构方案。后桥采用非断开式驱动桥壳,单级螺旋锥齿轮主减速器,对称式圆锥行星齿轮差速器,半浮式支承半轴,驱动车轮为四个,后桥采用轴承为圆锥滚子轴承。在已知主传动比的情况下,选择准螺旋锥齿轮主减速器齿轮的型式,目的是为了降低成本,并且工作平稳,噪声小。对称式圆锥行星齿轮差速器结构简单,使用可靠。半浮式半轴结构
2、简单,所受载荷较大。圆锥滚子轴承承载能力强,且有利于主减速器齿轮副调整。全套图纸,加在说明书的计算部分,说明了主要参数选择的依据,对主减速器,差速器,半轴和驱动桥壳进行了尺寸和强度计算。此外,还计算了主减速器支撑轴承的寿命。本文提供了关于以上计算的详细计算依据、步骤和计算数据。47关键词:驱动桥,半轴齿轮,差速器,半轴47DESIGNOFREARAXLEFORMEDIUMGOODSVEHICLEABSTRACTTheaimofthisprojectistodesigntherearaxleforthemediumgoodsvehicle.Therearaxleactsasthedriv
3、ingaxleinthisproject.,whichisusedtobeartheframeanddrivethecar.Thedesignoftherearaxleshouldmeetwiththerequirementoftheperformanceofpowerandeconomic,andthesametime,itmustbeaccordtotheprincipleofthemechenicsofvehicle.Accordingthespecificparametersofthedrivingsystemandnecessaryreasoning,thisrearaxle
4、concludetheintegrateddrivingaxlehousing,themaindriveofsinglespiralbevelgear,thedifferentialwithtaperplanetarygear,thehalfaxleandsoon.Therearefourdrivingwheelandthebearingsthattherearaxleusedarebothtaperrollerbearings.Withtheprovisionofthedriveratio,thespiralbevelgearisselectedinthisdesign,whicha
5、imedtominimizethecostandmakelittlenoise.Thedifferentialwiththesymmetrictaperplanetaryhasarelativelysimplestructure,anditisreliable.Thecalculationsectionofthispaperismainlyconcerningaboutthephysicaldimensionofthegearofthemaindriveandthedifferential,thedrivingaxle,andthestrengthproofreadofit.Inadd
6、ition,thestrengthproofreadofit.Inaddition,thelifeofthebearingofthemaindriveisalsocalculatedinthissection.Majorityofcomputationsbasis,thestepandtheestimateddatafortheseprojectandadvancedinpaper.KEYWORDS:Drivingaxle,Hypoidgear,Differential,Axleshaft47目录前言...........................................
7、.......1第一章驱动桥的结构方案分析..............................2第二章主减速器的设计................................4§2.1主减速器的结构形式和选择......................4§2.2主减速比的确定.................................4§2.3主减速器齿轮计算载荷的确定........................5§2.