资源描述:
《轻型货车变速器设计》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、全套设计包括设计说明书+CAD图纸。购买请联系qq:541937254轻型货车变速器设计摘要在技术要求为“汽车最高行驶车速为85㎞/h,整车整备满载质量为2.05t,行驶中迎风面积为2.8㎡,车轮半径为341㎜,主减速比为3”的条件下设计带1级倒档的五档变速器。本设计中采用中间轴式变速器,其优点是:最高档采用直接档,传递扭矩效率高,齿轮和轴承的磨损小,噪声小;其它档动力传递要连续经过两对齿轮,因此,在中心距较小的情况下,各档仍然有较小的传动比;其缺点是:中间档的传动效率低。设计中以设计轻型货车变速器为目的,重点设计了变速器的各轴
2、、各齿轮、各轴承;其中前进档各齿轮采用平行轴斜齿轮,以提高传动效率,减小噪声,倒档齿轮采用平行轴直齿轮:第一、第二轴后轴承采用角接触球轴承,以承受轴向力,中间轴各轴承采用外圈有挡边圆柱滚子轴承。换挡方式除倒档采用第二轴可移动齿轮换挡外,其它各档均采用锁环式惯性同步器换档,保证迅速、省力、无冲击、无噪声换档,与操作熟练程度无关,从而提高了汽车的加速性、经济性和行驶安全性。操纵机构采用了间接操纵式手动换档机构,换档拨叉轴设计有自锁和互锁装置,保证在汽车行驶当中无跳档、乱档以及换档冲击,工作可靠。关键词:汽车,轻型货车,变速器,设计参
3、数IV全套设计包括设计说明书+CAD图纸。购买请联系qq:541937254LIGHTGOODSVEHICLETRANSMISSIONDESIGNABSTRACTItstechnicalrequirementsfor"themaximumtravelingspeedofthecaris85㎞/h,loadedwiththequalityofvehiclepreparationforthe2.05t,drivinginthewindareaof2.8squaremeters,thewheel’sradiusis341mm,them
4、ainreductionratiois3",designingwiththeconditionsreverseafivegrade’stransmission.Designusedinthemiddleofthetransmissionaxis,anditsadvantagesare:thehighestgradeadoptsthedirectshelf,itishighinefficiencytotransmitthetorsion,thewearingandtearingofgearsandaxlesislight,othe
5、rshelfpoweraretransmittedthatcontinuouslypassestwopairsofgearsinarow,sointhecaseofthecentre-to-centrespacingissmallerthateveryshelfstillhasabiggerdeceleratedratio;Itsshortcomingsareasfollows:themiddleofthetransmissionefficiencyislow.Withthepurposeofdesigningalightgoo
6、dsvehiclesistransmissionofthepickuptruckinthisdesign,focusingonthedesignofthetransmissionshaft,thegears,thebearings;Everygearoftheadvanceshelfadoptsparallelaxle’sobliquegear,inordertoimprovetransmissionefficiencyandreducenoise,thepourshelfgearsadoptsparallelaxle’sstr
7、aightgear;Thefirstandthesecondshaftbearingsangularcontactballbearingusedtobeartheaxialforce,themiddleaxle’severybearingadoptouterlanehasblockcylinder’scolumnsrollerbearings.Inadditiontoshiftingthewaytheuseofthesecondreversegearshiftmovableaxis,theotherfilesarelockedi
8、nertiasynchronizerringgear,andensurerapid,labor-saving,non-impact,noise-freetransmission,andoperationofproficiencyhasnothingtodosoa