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…………………………24 差速器齒輪的強度校核…………………………………255 車輪傳動裝置…………………………………………………266 驅(qū)動橋殼設計…………………………………………………29 驅(qū)動橋殼結(jié)構(gòu)方案分析…………………………………29 驅(qū)動橋殼強度計算………………………………………307 花鍵設計計算………………………………………………33 結(jié)構(gòu)形式及參數(shù)的選擇…………………………………33 花鍵校核…………………………………………………338 工藝性和經(jīng)濟性分析…………………………………………34結(jié)論………………………………………………………………36致謝………………………………………………………………37參考文獻…………………………………………………………38附錄A……………………………………………………………39附錄B……………………………………………………………441 緒論 驅(qū)動橋處于動力傳動系的末端,其基本功能是增大由傳動軸或變速器傳來的轉(zhuǎn)矩,并將動力合理的分配給左右驅(qū)動輪,另外還承受作用與路面和車架或車身之間的垂直力縱向力和橫向力。關鍵詞 驅(qū)動橋 輕型客車 差速器 主減速器 ABSTRACTThe main content of this bachelor paper is the process of the design and calculation of the drive axle for minibus.As one of main ponent of vehicle drive line, its basic effect is to enlarge the torques that es from the drive shafts or directly from the transmission, and distributes the torques to side wheels, and make the side wheels have the differential drive axle has an important effect on vehicle performance, therefore, we should keep a serious and earnest attitude during the course of design.In the exordium part, it has short and sweet introduced the assembly and pattern selection for drive axle.In the part of selection and argumentation ,a concrete description of structure form of drive axle and its assemblies are made. In this design, it has selected the singlegrade mainreducer drive axle, it is two hypoid gears, it can simplify the structure, reduce the size, make effect use of the space and materials, reduce the whole quality. As it is for minibus and often use on good rods, so it dosen’t use differential block.In the part of designing conclusion and strength check, parameter of the essential units such as the speed reduction,differential,wheel drive mechanism and so on are selected. At the same time, the author makes the strength check to the main speed reduction,differential wheels drive mechanism.In the technology of drive ring gear shaft is analyzed, afterwards its dimensional chain is calculated.In the conclusion, the author makes a brief summary about this Graduation Project. And the author gives his heartily thanks and respects to the guide teachers and classmates, who helped and supervised the author a lot.Key words drive axle minibus differential gear mainreducer畢業(yè)設計(論文)原創(chuàng)性聲明和使用授權說明原創(chuàng)性聲明本人鄭重承諾:所呈交的畢業(yè)設計(論文),是我個人在指導教師的指導下進行的研究工作及取得的成果。在設計計算與強度校核部分,對主減速器主從動齒輪、差速器齒、輪車輪傳動裝置和花鍵等重要部件的參數(shù)作了選擇。在緒論部分,對驅(qū)動橋各總成及其選用形式作了簡明扼要的說明。2005屆畢業(yè)設計說明書 Page 48 of 48摘 要本說明書闡述的內(nèi)容是關于輕型客車驅(qū)動橋總成設計和計算過程。所以在設計過程中,設計者本著嚴謹和認真的態(tài)度進行設計。由于是輕型貨車,主要形式在路面較好的條件下,因此沒有使用差速鎖。結(jié)束語是作者對本次畢業(yè)設計的一些看法和心得體會,并對悉心幫助和指導過我的指導老師和同學表示衷心的感謝和深深的敬意。作 者 簽 名: 日 期: 指導教師簽名: 日 期: 使用授權說明本人完全了解 大學關于收集、保存、使用畢業(yè)設計(論文)的規(guī)定,即:按照學校要求提交畢業(yè)設計(論文)的印刷本和電子版本;學校有權保存畢業(yè)設計(論文)的印刷本和電子版,并提供目錄檢索與閱覽服務;學??梢圆捎糜坝?、縮印、數(shù)字化或其它復制手段保存論文;在不以贏利為目的前提下,學??梢怨颊撐牡牟糠只蛉績?nèi)容。2) 外形尺寸要小,保證有必要的離地間隙。6) 與懸架導向機構(gòu)運動協(xié)調(diào),對于轉(zhuǎn)向驅(qū)動橋,還應與轉(zhuǎn)向機構(gòu)運動相協(xié)調(diào)。當采用獨立懸架時,為保證運動協(xié)調(diào)驅(qū)動橋應為斷開式,這種驅(qū)動橋無鋼性的整體外殼,主減速器及其殼體裝在車架或車身上,兩側(cè)驅(qū)動車輪則與車架或車身做彈性聯(lián)系,并可彼此獨立地分別相對于車架或車身做上下擺動,車輪傳動裝置采用萬向節(jié)傳動。減小了汽車在行駛時作用與車輪和車橋上的動載荷,提高了零部件的使用壽命;由于驅(qū)動車輪與地面的接觸情況及對各種地形的適應性較高,大大增敲了車輪的抗側(cè)滑能力。3 主減速器 主減速器的結(jié)構(gòu)形式選擇 主減速器的功用:將輸入的轉(zhuǎn)矩增大并相應降低轉(zhuǎn)速,以及當發(fā)動機縱置時還具有改變轉(zhuǎn)矩旋轉(zhuǎn)方向的作用。 主減速器計算載荷的確定1 預選 ::發(fā)動機輸出功率最大時主軸轉(zhuǎn)速4000rpm:最高車速120km/h:變速器最高檔速比1為了得到足夠的儲備功率,一般應加大10%~25%,取大10%,則=*=2 選擇齒數(shù)當較?。▇5)時,取7~12 ,為減小重量尺寸,取=8,則=*=所以取=37(38有公約數(shù)), 因此最終選擇=37/8= 從動齒輪計算載荷的確定1) 按發(fā)動機最大轉(zhuǎn)矩計算:猛接離合器所產(chǎn)生的動載系數(shù):發(fā)動機的最大轉(zhuǎn)矩:變速器的一檔傳動比:主減速器的減速比:發(fā)動機到驅(qū)動橋之間的傳動效率:計算驅(qū)動橋數(shù)