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1、本科學(xué)生畢業(yè)論文Eq2102牽引車變速器設(shè)計系部名稱:汽車工程系專業(yè)班級:車輛工程B0-6班學(xué)生姓名:指導(dǎo)教師:職稱:講師TheGraduationDesignforBachelor'sDegreeDesignofEq2012forTractorTruckCandidate:Specialty:VehicleEngineeringClass:B07-6Supervisor:InstructorHeilongjiangInstituteofTechnology摘 要變速器是汽車傳動系統(tǒng)中比較關(guān)鍵的部件,它的設(shè)計好壞將直接影響到汽車的實際使用性能。變速
2、器用來改變發(fā)動機傳到驅(qū)動輪上的轉(zhuǎn)矩和轉(zhuǎn)速,目的是在原地起步,爬坡,轉(zhuǎn)彎,加速等各種行駛工況下,使汽車獲得不同的牽引力和速度,同時使發(fā)動機在最有利工況范圍內(nèi)工作。變速器設(shè)有空擋和倒擋。需要時變速器還有動力輸出功能。因為變速箱在低檔工作時作用有較大的力,所以一般變速箱的低檔都布置靠近軸的后支承處,然后按照從低檔到高檔順序布置各檔位齒輪。這樣做既能使軸有足夠大的剛性,又能保證裝配容易。變速箱整體結(jié)構(gòu)剛性與軸和殼體的結(jié)構(gòu)有關(guān)系。一般通過控制軸的長度即控制檔數(shù),來保證變速箱有足夠的剛性。本文設(shè)計研究了兩軸式五擋手動變速器,對變速器的工作原理做了闡述,變速器的各
3、擋齒輪和軸做了詳細(xì)的設(shè)計計算,并進行了強度校核,對一些標(biāo)準(zhǔn)件進行了選型。變速器的傳動方案設(shè)計并講述了變速器中各部件材料的選擇。全套圖紙,加153893706關(guān)鍵字:擋數(shù);傳動比;齒輪;軸;強度校核IIABSTRACTTransmissionismorecruicalinautomotivedrivelinecomponents,itisdseignedtoditectlyaffectthequalityoftheactualuseofperformanceautomobiles.Transmissiontochangetheenginereached
4、onthedrivingwheeltorqueandspeed,isaimedatmarkingstart,climbing,turning,acceleratevariousdrivingconditions,thecarwasdifferenttractionandspeedMeanwhileengineinthemostfavorableworkingconditionswithinthescopeofthework.Andthetransmissioninneutralgearwithreversegear.Transmissionalson
5、eedpoweroutputfunction.Gearboxbecauseofthelow-gradeworkatalargerrole,Ingeneral,thelow-gradegearboxlayoutareclosetotheaxisaftersupport,Followingfromlow-gradetohigh-gradeorderofthelayoutofstallsgear.Thiswillnotonlyallowaxisarelargeenoughforarigid,butalsoensureseasyassembly.Gearbo
6、xoverallstructureandrigidaxleandtheshellstructureofrelations.Generallythroughthecontrolshaftlengthcontroloverseveralstallstoensurethatadequategearboxrigid.Thispaperdescribesthedesignoftwo-axisfiveblockmanualtransmission,thetransmissionprincipleofworkelaborated,Transmissionofthe
7、gearshaftanddoadetaileddesign,andtheintensityofaschool.Forsomestandardpartsfortheselection.TransmissionTransmissionprogramdesign.Abriefdescriptionofthetransmissionofallcomponentsofthematerialchoice.Keywords:Block;Transmissionratio;Gear;Axis;CheckingII目錄摘 要IAbstractII第一章緒論41.1選
8、題的目的和意義41.2選題的研究現(xiàn)狀41.3課題的預(yù)期成果5第2章變速器總體方案設(shè)計62.1設(shè)計所依據(jù)的主要