【正文】 ，并進(jìn)行了校核，設(shè)計(jì)結(jié)果基本符合要求。差速器的設(shè)計(jì)方法和思路與主減速器的設(shè)計(jì)基本類似，本次設(shè)計(jì)選用了工作平穩(wěn)、結(jié)構(gòu)簡單的普通錐齒輪式差速器。中型貨車采用全浮式半軸，從而確定了半軸的尺寸和材料，并對半軸進(jìn)行了強(qiáng)度計(jì)算。此部分對驅(qū)動(dòng)橋殼的功用和結(jié)構(gòu)方案進(jìn)行了介紹和分析，采用整體式橋殼，因?yàn)槠渚哂休^大的強(qiáng)度和剛度，拆裝、調(diào)整方便等優(yōu)點(diǎn)。綜上所述，本次設(shè)計(jì)基本達(dá)到預(yù)期目標(biāo)，完成了規(guī)定的任務(wù)。參考文獻(xiàn)[1] 劉惟信. : 清華大學(xué)出版社, 2001[2] 王望予. 汽車設(shè)計(jì)（: 機(jī)械工業(yè)出版社, [3] 陳家瑞. 汽車構(gòu)造（第4版. 北京: 人民交通出版社, [4] 張洪欣 . 汽車設(shè) .北京：機(jī)械工業(yè)出版社 . 1999 [5] 紀(jì)峻嶺. 傳動(dòng)軸、差速器、驅(qū)動(dòng)橋及車橋. 北京: 化學(xué)工業(yè)出版社, 2005[6] 汽車標(biāo)準(zhǔn)匯編（第四卷）. 中國汽車技術(shù)中心, 2004 [7] 郝京順. 汽車設(shè)計(jì)標(biāo)準(zhǔn)資料手冊. 長春: 吉林科技出版社, 1992[8] 吳克堅(jiān). 機(jī)械設(shè)計(jì). 北京: 高等教育出版社, 2003[9] 孫恒, （第六版）. 北京: 高等教育出版社, 2001 [10] 孫志禮. : 東北大學(xué)出版社, [11] 龔微寒 . ：人民交通出版社 . 1995 [12] 劉維信. 圓錐齒輪與雙曲面齒輪傳動(dòng). 北京：人民交通出版社， 1980[13] 頓德安. , 2000[14] 張玉， 劉平. : 東北大學(xué)出版社, [15] 齒輪手冊編委會(huì). 齒輪手冊(第二版).北京：機(jī)械工業(yè)出版社， [16] 吉林工業(yè)大學(xué)汽車教研室 . ：機(jī)械工業(yè)出版社 . 1981[17] 機(jī)械設(shè)計(jì)手冊編委會(huì). 機(jī)械設(shè)計(jì)手冊(3).北京: 機(jī)械工業(yè)出版社, [18] 小林明. 汽車工程手冊 (第二分冊).北京: 機(jī)械工業(yè)出版社, 1984[19] Reimpell J, stoll H. The Automotive Chassis: Engineering Principles. Warremdale, PA 15096, SA, SAE, 1996 致謝大學(xué)四年的美好生活即將以這篇畢業(yè)論文劃上一個(gè)句號，回首這段畢業(yè)設(shè)計(jì)過程，心中滿是感恩之情，在此特地表達(dá)誠摯的謝意。在本設(shè)計(jì)完成之際，我要對多年幫助我的老師、同學(xué)和朋友表示忠心的感謝，是他們的關(guān)心和幫助給了我很大的動(dòng)力，讓我更加順利的完成這次設(shè)計(jì)。我要感謝我的指導(dǎo)教師XXX老師。從設(shè)計(jì)題目的選擇到設(shè)計(jì)的完成，張老師都滲透了不少心血。他的治學(xué)嚴(yán)謹(jǐn)?shù)膽B(tài)度、謙虛扎實(shí)的工作作風(fēng)使我深受教育和啟迪，讓我深深感覺到教師的偉大。在每一次答疑的時(shí)候，他總是耐心地給我解答并將問題擴(kuò)展開來，讓我對其能夠真正的理解和掌握，讓我學(xué)到了好多知識，從中我看到了他淵博的知識和豐富的實(shí)際經(jīng)驗(yàn)。最后說聲，XXX老師，您辛苦了！最后，我要感謝我的同學(xué)和朋友。他們每天都和我一樣忙著畢業(yè)設(shè)計(jì)，但我有不會(huì)的地方請教時(shí)，他們馬上放下自己的設(shè)計(jì)幫我解除困雉。在這次設(shè)計(jì)即將完成之際，我要忠心的謝謝你們！附 錄1Differential and Rear AxlesThe differential is part of the rearaxlehousing assembly, which includes the differential, rear axles, wheels, and bearings. If the car were to be driven in a straight line without having to make turns, then no differential would be necessary. However, when the car rounds a turn, the outer wheel must travel farther than the inner wheel. The differential permits the two rear wheels to rotate different amounts when the car goes around a turn, while still delivering power to both rear wheels.The rear axles are attached to the wheels and have bevel side gears on their inner ends. The differential case is assembled on the left axle but can rotate on a bearing independently of the differential case supports the differentialpinion gear on a shaft, and this gear meshes with the two bevel gears. The ring gear is attached to the differential case so that the case rotates with the ring gear when the later is driven by the drive driving power enters the differential through the drive pinion on the end of the propeller shaft. The drive pinion is meshed with a large ring gear so that the ring gear revolves with the pinion.Attached to the ring gear (through the differential case) is a differentialpinion shaft on which are assembled two differentialpinion gears. Each rear car wheel has a separate axle, and there are two side gears splined to the inner ends of the two wheel axles. The two differentialpinion gears mesh with these two side gears. When the car is on a straight road, the two differentialpinion gears do not rotate on the pinion shaft, but they do exert pressure on the two side gears so that the side gears turn at the same speed as the ring gear, causing both rear wheels to turn at the same speed, differential case is supported in the carrier by two taperedroller side bearings. This assembly can be adjusted from side to side to provide the proper backlash between the ring gear and pinion and the required side bearing preload. This adjustment is achieved by threaded bearing adjusters on some units and the placement of selective shims and spacers on others.The differential case is supported in the carrier by two taperedroller side bearings. This assembly can be adjusted from side to side to provide the proper backlash between the ring gear and pinion and the required side bearing preload. This adjustment is achieved by threaded bearing adjusters on some units and the placement of selective shims and spacers on others.Transaxle final drive gears provide the means for transmitting transmission output torque to the differential section of the transaxle. The differential section of the transaxle has the same ponents as the differential gears in a RWD axle and basically operate in the same way. The power flow in transversely mounted power trains is in line with the wheels and therefore the differential unit does not need to turn the power 90 degrees.When the car rounds a curve, the outer wheel must turn faster than the inner wheel. To permit this, the two pinion gears rotate on their pinion shaft, transmitting more turning movement to the outer side gear than to the inner side gear. Thus, the side gear on the outerwheel axle turns more rapidly than the side gear on the innerwheel axle. This permits the outer wheel to turn more rapidly while the car is rounding the are two basic types of axle: dead axles and live axle. The dead axle does not rotate。 the wheel rotates on it. A mon example is the axle on a horse drawn wagon. Live axles are attached to the wheel so that both the wheel and the axle rotate together. Live axles are classified according to the manner in which they are supported: semifloating, threequarterfloating, and fullfloating.Propeller Shaft and Universal JointThe propeller shaft is a drive shaft to carry the power from the transmission to the rearwheel axles. It connects the transmission main, shaft carries through the propeller shaft to the differential at the rear axles. Rotary motion of the transmission main shaft carries through the propeller shaft to the differential, causing the rear wheels to rotate.The propellershaft design must take two facts into consideration. First, the engine and transmission are more or less rigidly attached to the car frame. Second, the rearaxle housing (with wheels and differential) is attached to the frame by springs. As the rear wheels encounter irregularities in the road, the springs press or expand. This changes the angle of drive and the distance between the transmission and the differential, and the propeller shaft may take care of these two changes. That i