文档介绍：I提供全套毕业设计摘要本设计是针对斯太尔重型车而进行的双级主减速器设计。此双级主减速器是由两级齿轮减速组成。与单级主减速器相比,双级减速器具有降低转速,增大扭矩的特点,在保证离地间隙相同时可得到很大的传动比,并且还拥有结构紧凑,噪声小,使用寿命长等优点。双级主减速器与单级相比,在保证离地间隙相同时可得到大的传动比,但是尺寸、质量均较大,成本较高。它主要应用于中、重型货车、越野车和大客车上该设计包含了双级主减速器各零件参数的设计和校核。主要包括:主减速器结构的选择、主动锥齿轮传动比选择与齿轮设计、从动锥齿轮的设计、轴承的选择与校核,轴的选择与校核。在设计中,要选择正确的传动比以满足主从动锥齿轮的齿数分配,主减速器是汽车传动系中减小降低转速、增大扭矩的主要部件,它是依靠齿数少的锥齿轮带动齿数多的锥齿轮。对发动机纵置的汽车,其主减速器还利用锥齿轮传动以改变动力的方向。全套图纸,加153893706关键词:载货汽车;双级主减速器;齿轮;校核;设计IIABSTRACTThisdesignisdesignsastructuretothetrucktobereasonable,workrelatedreliabletwo--pareswiththesinglestagemaingearbox,whentheguaranteegroundclearanceisthesamemayobtaintheverygreatvelocityratio,pact,thenoiseissmall,-stagemainreducerandasingle-stagethaninthesamegroundclearancetoensurealargetransmissionratioavailable,butthesize,qualityarelarger,,SUVsandbusesonThisarticleelaboratedthetwo-putationandtheselectionprocess,:Maingearboxstructurechoice,host,drivenbevelgear'sdesign,bearing',toselectthecorrectgearratiotosatisfythenumberofteethofdrivinganddrivenbevelgearallocationThemainreducerinthetransmissionlinesusedtoreducevehiclespeed,increasedthetorque,,:Truck;Two-stageMainReductionGear;Gear;Check目录摘要....................................................................................................................IAbstract....................................................................................................II第1章绪论............................................................................................................................................................................................................................................................