毕业设计<论文）农用运输车变速器的设计英文名称<字体：TimersNewRoman字号：小二）班级学生姓名学号9指导教师职称工程师/讲师导师单位论文提交日期摘要关于简单三轴四档式变速器的设计，首先选择的是齿轮模数，在总挡位和一档位速比确定后，合理分配变速器各档位的速比，接着计算出齿轮参数和中心距，并对齿轮进行强度验算，确定齿轮的结构和尺寸，绘制齿轮的零件图，根据经验公式初步计算出轴的尺寸，然后对每个档位下轴的刚度和强度进行验算，确定出轴的机构和尺寸。最终完成变速器的零件图和装配图的绘制。1/16变速器的齿轮为标准齿轮，档位数和传动比与发动机参数匹配，保证了汽车具有良好的动力性和经济性。该变速器具有操作简单、方便、传动效率高，制造容易，成本低廉，维修方便的特点，适应农用运输车的使用。本次设计的变速器对前进挡齿轮采用锁环式惯性同步器，对于倒档齿轮采用滑移齿轮进行换挡，可以使制造比较方便。变速器齿轮的润滑采用压力强制润滑，在齿轮径向钻3~4个孔。虽然制造有点麻烦，但润滑比较可靠，而且油液是循环的。关键词：变速器齿轮传动比AbstractOnthesimplethreeaxisfourgeartransmissiondesign,thefirstchoiceofgearmodule,inthegeneralgearandthegearratioisdetermined,reasonableallocationofthetransmissiongearratio,andcalculatethegearparametersandthedistancefromthecenter,andonthegearstrengthchecking,determiningthegearstructureandsize,drawinggearparts,accordingtotheempiricalformulatocalculatethesizeoftheprimaryshaft,thenforeachgearshaftstiffnessandstrengthchecking,determinetheaxisofthebodyandsize.Accordingtothearrangementofbodiesandthereferenceofsimilarmodelscorrespondingtothebearing,inaccordancewiththenationalstandardtochoosesuitablebearing,andthenonthebearinglifecalculation,finallycompletethetransmissionpartdrawingandassemblydrawing.Transmissiongearforstandardgear,gearnumberandtransmissionratioandengineparametermatching,ensuresthatthecarhasgooddynamicperformanceandfueleconomy.Thetransmissionhastheadvantagesofsimpleoperation,convenient,hightransmissionefficiency,easymanufacture,lowcost,convenientrepair,adaptedtotheuseoffarmtransportvehicle.Thedesignofthetransmissiongearoftheforwardgears,alockringsynchronizerinertia,usedforreversegearslidinggearshift,cancreatemoreconvenient.Transmissiongearlubricationwithpressurelubrication,thegearradialdrill3-4holes.Whilemakingalittletrouble,butmorereliablelubrication,andoilisacycle.Keywords:transmissiongearTransmissionratio2/16目录摘要Abstract绪论····························································第一章简单三轴四档式变速器设计的基本参数······················1.1档位数和传动比···········································1.11根据汽车最大爬坡度确定····························1.12根据驱动车轮与路面的附着条件确定···········1.2传动轴中心距············································1.3各档齿轮齿数的分配·····································1.31确定Ⅰ档齿轮的齿数·······························1.32修正中心距A···································1.33确定常啮合传动齿轮副的齿数······················1.34确定其他档位的齿轮齿数··························1.35确定倒档齿轮副的齿数···························第二章简单三轴四档式...
VIP
