508 28馬力輪式拖拉機(jī)最終傳動(dòng)及驅(qū)動(dòng)軸設(shè)計(jì)（有cad圖+文獻(xiàn)翻譯）,508,28馬力輪式拖拉機(jī)最終傳動(dòng)及驅(qū)動(dòng)軸設(shè)計(jì)（有cad圖+文獻(xiàn)翻譯）,28,馬力,輪式拖拉機(jī),最終傳動(dòng),驅(qū)動(dòng),設(shè)計(jì),cad,文獻(xiàn),翻譯 28馬力輪式拖拉機(jī)最終傳動(dòng)及驅(qū)動(dòng)軸設(shè)計(jì) 摘 要 拖拉機(jī)是與各種作業(yè)機(jī)械配套的自走式動(dòng)力機(jī)械，是農(nóng)業(yè)機(jī)械化的主要機(jī)械。在農(nóng)業(yè)中，他主要用以牽引和驅(qū)動(dòng)多種類農(nóng)機(jī)具完成各項(xiàng)田間作業(yè)和農(nóng)業(yè)運(yùn)輸。農(nóng)村經(jīng)濟(jì)日新月異鄉(xiāng)鎮(zhèn)企業(yè)蓬勃發(fā)展，城鄉(xiāng)交流不斷擴(kuò)大，道路運(yùn)輸量急劇增加，所以運(yùn)輸車輛出現(xiàn)缺口。近年來，隨著拖拉機(jī)走入田間的不斷深入，從作業(yè)種類上由耕，耙，播擴(kuò)大到收獲，中耕，栽植，噴霧，打捆等多個(gè)方面，與農(nóng)機(jī)具配套作業(yè)。農(nóng)用拖拉機(jī)正適合了其農(nóng)村的這種使用條件：工作環(huán)境比較惡劣，農(nóng)村道路相對(duì)復(fù)雜，速度不高。在中國(guó)現(xiàn)有的生產(chǎn)模式下，廣大農(nóng)民需要的還是中小型拖拉機(jī)，國(guó)內(nèi)市場(chǎng)對(duì)該檔產(chǎn)品的需求量在不斷增長(zhǎng)。另外和國(guó)外拖拉機(jī)生產(chǎn)廠家相比我國(guó)生產(chǎn)的拖拉機(jī)經(jīng)濟(jì)實(shí)惠，價(jià)格只有國(guó)外同類產(chǎn)品的一半甚至更少，因此，中小馬力拖拉機(jī)社會(huì)銷量和保有量很大，傳動(dòng)系布置多種多樣。 最終傳動(dòng)是傳動(dòng)系的重要組成部分之一，它的功用是進(jìn)一步增加傳動(dòng)系的傳動(dòng)比，從而使拖拉機(jī)獲得所需的驅(qū)動(dòng)力。 我這次設(shè)計(jì)的是輪式28馬力拖拉機(jī)的最終傳動(dòng)，我采用的是外置外嚙合直齒圓柱齒輪式最終傳動(dòng)，軸采用了矩形花鍵軸。采用這種最終傳動(dòng)設(shè)計(jì)方案，可以達(dá)到設(shè)計(jì)任務(wù)要求，并可保證拖拉機(jī)在工作中具有足夠的動(dòng)力輸出。 關(guān)鍵詞：傳動(dòng)比，外嚙合，圓柱齒輪，花鍵軸 DESIGN OF FINAL DRIVE AND DRIVE SHAFT OF 28 HP TRACTOR ABSTRACT Tractor with a variety of echanical operations supporting dynamic self-propelled machinery, agricultural mechanization is the main machinery. In agriculture, he mainly used for traction and driving range to complete the form of field operations and agricultural transport. Changing rural economy booming township enterprises, expanding exchanges between urban and rural areas, road transport volume increased dramatically, So transport vehicles gap. In recent years, with the tractor into the field continues to deepen, from the types of operations by farming, harrows, sowing to harvesting expansion, plowing, planting, Spray, bundled in many aspects, such as, the form of matching operations. Farm tractor is suitable for its use of this rural conditions : work environment was quite poor, rural roads is relatively complex, speed is not high. In China's current production model, the majority of the needs of peasants or small tractors, on the domestic market stalls in the demand for products continues to increase. Tractor and other foreign manufacturers in China compared to the agricultural economic benefits prices of similar foreign products only half or even less, and therefore, the community of small and medium-horsepower tractor sales and retain enormous capacity. Transmission layout varied. Final drive transmission system is an important component of one of its functions is to further increase the drive transmission ratio, so that the tractor was driven. My current design are 28 horsepower wheeled tractors the final drive, I used the external Gear-final drive. Adopt this final drive design, the design can meet the requirements for this task. guarantee that the tractor will work with sufficient power output. Key words: Transmission ratio, External, cylindrical gears, spline shaft 目 錄 前言....................................................1 第一章 最終傳動(dòng)簡(jiǎn)介....................................3 §1.1拖拉機(jī)最終傳動(dòng)的功用...............................3 §1.2拖拉機(jī)最終傳動(dòng)的分類...........................3 §1.3拖拉機(jī)最終傳動(dòng)的設(shè)計(jì)要求..........................3 第二章 設(shè)計(jì)任務(wù)分析...................................4 §2.1設(shè)計(jì)內(nèi)容..........................................4 §2.2主要技術(shù)指標(biāo)......................................4 §2.3設(shè)計(jì)要求..........................................4 第三章 最終傳動(dòng)設(shè)計(jì)方案的確定.........................5 §3.1設(shè)計(jì)方案的確定....................................5 §3.2本次設(shè)計(jì)方案的說明................................5 第四章 最終傳動(dòng)及驅(qū)動(dòng)軸的設(shè)計(jì)計(jì)算.....................6 §4.1整車主要參數(shù).......................................6 §4.2外嚙合圓柱齒輪的主要參數(shù)確定......................6 §4.3圓柱齒輪的結(jié)構(gòu)強(qiáng)度計(jì)算............................10 §4.4 主動(dòng)軸的確定與計(jì)算...............................15 §4.5驅(qū)動(dòng)軸確定與計(jì)算..................................19 §4.6鍵的校核..................................22 §4.7輸入軸軸承校核............................22 §4.8驅(qū)動(dòng)軸軸承校核..........................23 第五章 結(jié)論...........................................25參考文獻(xiàn)...............................................26致謝...................................................27外文資料譯文 IV