507 25馬力拖拉機最終傳動及驅(qū)動軸設(shè)計（有cad圖+文獻翻譯等）

507 25馬力拖拉機最終傳動及驅(qū)動軸設(shè)計（有cad圖+文獻翻譯等）,507,25馬力拖拉機最終傳動及驅(qū)動軸設(shè)計（有cad圖+文獻翻譯等）,25,馬力,拖拉機,最終傳動,驅(qū)動,設(shè)計,cad,文獻,翻譯 25馬力拖拉機最終傳動及驅(qū)動軸設(shè)計 摘 要 隨著拖拉機工業(yè)的發(fā)展，我國拖拉機產(chǎn)品的科研與設(shè)計水平逐步提高。拖拉機是用與牽引和驅(qū)動各種配套機具，完成農(nóng)業(yè)田間作業(yè)、各種土石方工程作業(yè)、運輸作業(yè)和固定作業(yè)等的動力機械。拖拉機必須和各種作業(yè)機具組成拖拉機機組才能完成各種作業(yè)。拖拉機最終傳動是用來進一步增加傳動系的傳動比，履帶拖拉機和某些輪式拖拉機的最終傳動還用來提高后橋的離地間隙。最終傳動要有適當?shù)膫鲃颖?；保證后橋處有足夠的離地間隙；齒輪油足夠的承載能力和支承剛度；靠近驅(qū)動輪的最終傳動尤其要求有可靠的密封，最終傳動一般采用外嚙合圓柱齒輪傳動或行星齒輪傳動。外嚙合圓柱齒輪最終傳動按所處的位置分為內(nèi)置式和外置式兩種。 本次設(shè)計的最終傳動采用了外嚙合直齒圓柱齒輪最終傳動，軸采用了矩形花鍵軸，軸承采用了圓柱滾子軸承和圓錐滾子軸承。 關(guān)鍵詞： 拖拉機，最終傳動，外嚙合，圓柱齒輪，花鍵軸 DESIGN OF FINAL TRANSMISSION AND DRIVE SHAFTS OF 25 HP TRACTOR ABSTRACT Along with the tractor industry development, our country tractor product scientific research and the design level gradually enhance.The tractor is with with tows and actuates each kind of necessary machines and tools, completes the agricultural field work, each kindof cubic meter of earth and stone engineering work, the transportationwork and the fixed work and so on the power generator The tractor must be able to complete each kind of work with each kindof work machines and tools composition tractor unit. The tractor finaltransmission is uses for further to increase transmission system the velocityratio, the caterpillar tractor and certain wheeled tractors final transmissions also uses for to enhance the rear axle of car the groundclearance. The final transmission must have the suitable velocity ratio;Guaranteed the rear axle of car place has the enough ground clearance; gear oil enough bearing capacity and supporting rigidity ; Approaches the driving gear the final transmission especiallyto request to have the reliable seal outside, the final transmission generally uses meshes the cylindrical gears transmission or the planetgear biography In outside meshes the position which the cylindrical gears finaltransmission presses locates to divide into sets at the type andoutside sets at the type two kinds. This design final transmission used outside meshed thecylindrical gears final transmission, the axis uses the rectangularspline shaft, the bearing has used the gulley ball bearing and thecircular cone roller bearings. Key words: tractor，final transmission，outside meshes，cylindrical gears，spline shaft 目 錄 第一章 前 言...................................1 第一章 拖拉機最終傳動結(jié)構(gòu)方案分析...............3 §2.1 最終傳動的功用和要求.....................3 §2.2 最終傳動的分類 ...........................3 §2.2.1 外嚙合圓柱齒輪最終傳動 ................3 §2.2.2 內(nèi)嚙合圓柱齒輪最終傳動 .................7 §2.2.3 行星齒輪最終傳動 .......................7 第三章 最終傳動的主要參數(shù)確定...................9 §3.1 最終傳動直齒圓柱齒輪的中心距 ............9 §3.1.1 對最終傳動的基本要求是 ................9 §3.1.2 求中心距................................9 §3.2 齒輪各參數(shù)的選擇與計算.... ............11 第四章 圓柱齒輪的結(jié)構(gòu)強度計算..................14 §4.1 齒輪的校核................................14 §4.2 齒輪的強度應(yīng)力計算........................14 §4.2.1 齒輪表面接觸強度.......................14 §4.2.2 齒根彎曲強度校核.......................16 第五章 軸的確定與計算..........................19 §5.1 輸入軸校核..........................19 §5.2 驅(qū)動軸（輸出軸）設(shè)計與計算 .................22 第六章 軸承的校核...............................26§7.1 輸入軸圓柱滾子軸承的校核..................26 §7.2 輸出軸圓錐滾子軸承的校核..................26 第七章 總結(jié) ....................................28 參考文獻........................................29 致謝............................................30 IV