(毕业设计)EQ1181型载货汽车变速器取力器设计说明书

本科生毕业设计（论文）I摘要本次设计的取力器是与EQ1181型载货汽车DF6S850型变速器匹配，变速器最大输出扭矩850Nm，要求：取力器最大输出扭矩450Nm；满足强度、刚度要求；较高的传递效率；良好的加工工艺性和装配工艺性。该取力器的取力形式为变速器左侧盖取力器，总体结构形式采用两轴式，从取力器到专用装置之间的动力传递可以采用机械传动。首先，根据EQ1181型货车发动机和变速器参数及所用专用装置的参数确定取力器传动比，根据装配空间确定取力器内两齿轮中心距范围，根据变速器取力齿轮参数确定取力器两齿轮的模数，压力角，齿宽等参数。其次，对轴、齿轮和键进行校核，验证各部件的可靠性。然后，完成取力器装配图和零件图的绘制。最后，编制部分零件的加工工艺过程。通过计算分析，该取力器结构设计合理，制造工艺简单，基本可以用于实际生产和使用，达到设计要求。关键词：货车；变速器；取力器；设计；工艺。本科生毕业设计（论文）IIAbstractThisdesignrequiresaccessedgewithtransmissionDF6S850ofEQ1181Truckmatching,Request：themaximumoutputtorquetransmission850Nm，getmaximumoutputtorqueofPower450Nm;tomeetthestrengthandstiffnessrequirements;hightransmissionefficiency;goodprocessingprocessandassemblyprocessof.Thedevicestakepowerfromthepowerformofpowertransmissionfromtheleftsideofcover,andtheoverallstructureoftheformofatwo-axis,takingpowerfromthedevicetoadedicatedpowertransferbetweenthedevicescanbeusedmechanicaltransmission.Firstofall,theEQ1181-typevehicleinaccordancewithengineandtransmissionparametersandadedicateddeviceusedtodeterminetheparametersofPowerfromthetransmissionratio,determinedinaccordancewiththeassemblyofspaceinsideedgefromthecenterdistanceoftwogearrange,underthepowertransmissiongearparameterstakenfromthetwogearpowerdevicesmodule,pressureangle,toothwidthandotherparameters.Aftertheshaft,gearandkeystochecktoverifythereliabilityofthecomponents.Then,checkourcompletedeviceassemblydrawingandcomponentsdrawing.Finally,thepreparationofpartsoftheprocessingprocess.Analysisbycalculatingtheforcefromareasonablestructuredesign,manufacturingprocessissimple,thebasiccanbeusedinactualproductionanduse,meetthedesignrequirements.Keywords：truck;transmission;powertakeoff;design;technology.本科生毕业设计（论文）III目录第一章绪论..........................................................................................................11.1取力器简介................................................................................................11.2取力器分类................................................................................................1第二章取力器方案设计及论证............................................................................22.1取力器设计要求........................................................................................22.2取力器方案论证........................................................................................22.2.1已知东风EQ1181发动机、变速器及专用装置参数：......22.2.2方案论证...........................................3第三章取力器参数设计计算................................................................................53.1取力器传动比及齿轮齿数的确定...........................................................53.1.1取力器传动比的确定.................................53.1.2取力器齿轮齿数的确定...............................53.2取力器中心距............................................................................................73.3取力器齿轮计算与校核............................................................................83.4取力器轴计算与校核..............................................................................143.4.1取力器一轴的设计过程：............................143.4.2取力器二轴设计过程：..............................183.5取力器轴承的选用..................................................................................223.5.1取力器一轴轴承....................................223.5.2取力器二轴轴承....................................233.6取力器键连接设计..................................................................................253.6.1取力器一轴平键....................................253.6.2取力器二轴滑移花键................................253.6.3取力器二轴法兰花键................................263.6.4取力器齿轮2齿圈..................................26第四章主要零件加工工艺过程..........................................................................284.1取力器二轴的加工工艺过程..................................................................284.1.1取力器二轴加工工艺................................284.1.2二轴中间花键参数计算..............................294.1.3二轴轴端花键......................................29本科生毕业设计（论文）IV4.2取力器二轴齿轮加工工艺过程..............................................................304.2.1取力器二轴齿轮加工工艺............................304.2.2二轴齿轮齿圈参数..................................324.3拨叉轴加工工艺过程..............................................................................334.4轴承盖加工工艺过程..............................................................................334.5零件材料的选择......................................................................................354.5.1齿轮材料选择......................................354.5.2轴材料选择........................................354.5.3拨叉轴材料选择....................................354.5.4轴承盖材料选择....................................354.6取力器操纵机构设计..............................................................................35第五章取力器润滑与密封..................................................................................37第六章结论........................................................................................................38参考文献................................................................................................................39致谢.............................................................................