【正文】 摘 要 驅(qū)動(dòng)橋作為在汽車(chē)構(gòu)造中的一個(gè)必不可缺的一部分，驅(qū)動(dòng)橋的性能好壞直接關(guān)系到了整輛車(chē)的性能好壞，在載貨汽車(chē)中顯得更加尤為重要。本設(shè)計(jì)依照驅(qū)動(dòng)橋的基本設(shè)計(jì)方法對(duì)載貨汽車(chē)的后驅(qū)動(dòng)橋進(jìn)行了設(shè)計(jì)。首先對(duì)驅(qū)動(dòng)橋總成的結(jié)構(gòu)型式及布置進(jìn)行確定采用非斷開(kāi)式驅(qū)動(dòng)橋，然后對(duì)載貨汽車(chē)的一些主要參數(shù)進(jìn)行確定。其次根據(jù)驅(qū)動(dòng)橋的型式，確定一個(gè)總體設(shè)計(jì)方案。最后對(duì)驅(qū)動(dòng)橋中的主減速器、差速器、半軸和驅(qū)動(dòng)橋殼進(jìn)行數(shù)據(jù)計(jì)算，并對(duì)主減速器中的主動(dòng)錐齒輪、從動(dòng)錐齒輪；差速器中的行星齒輪和半軸齒輪；全浮式半軸和鋼板沖壓焊接整體式橋殼的強(qiáng)度進(jìn)行了計(jì)算校核 ，以及主減速器中的支承軸承進(jìn)行了壽命計(jì)算校核。本設(shè)計(jì)在主減速器的設(shè)計(jì)中采用的是一對(duì)螺旋錐齒輪的單級(jí)主減速器，主動(dòng)錐齒輪的支承形式采用懸臂式，從動(dòng)錐齒輪的支承形式選擇無(wú)幅式結(jié)構(gòu)，軸承均采用圓錐滾子軸承。通過(guò)本設(shè)計(jì)可以認(rèn)識(shí)到驅(qū)動(dòng)橋?qū)d貨汽車(chē)的重要性，并對(duì)驅(qū)動(dòng)橋的構(gòu)造能有一定深度地了解。 關(guān)鍵詞 ： 載貨汽車(chē) 驅(qū)動(dòng)橋 主減速器 差速器 半軸 ABSTRACT Driving bridge as an indispensable part of the car structure, driving bridge performance is directly related to the performance of the whole car is good or bad, in the truck is even more important. This design is designed according to the basic design method of the driving axle to the rear axle of the truck. First of all, the structure of the drive axle assembly and layout to determine the use of nonopen drive axle, and then some of the main parameters of the truck to determine. Followed by the type of drive axle to determine a general design. Finally, the main axle in the drive axle, differential, axle and drive axle housing data calculation, and the main reducer in the active bevel gear, driven bevel gear。 differential in the plaary gear and axle Gear。 fullfloating axle and steel plate stamping welding the overall strength of the axle was calculated to check, and the main bearing in the bearing bearing the life of the calculation check. The design of the main reducer in the design of a pair of spiral bevel gear singlestage main reducer, the active bevel gear support the use of cantilevered, driven bevel gear bearing the choice of notype structure, bearings are used Tapered Roller Bearings. Through this design can recognize the importance of the drive axle on the truck, and the construction of the bridge can have a certain depth. Key words: Lorry Drive axle Main decelerator Differential Semi axis 目 錄 1 前 言 ............................................................................................................................. 1 2 驅(qū)動(dòng)橋的總體結(jié)構(gòu)型式和布置 .................................................................................. 2 3 主減速器 ............................................................................................................................. 4 主減速器的基本參數(shù)和結(jié)構(gòu)型式 ............................................................................. 4 主減速比的確定 .............................................................................................. 4 主減速器的齒輪類(lèi)型選擇 .............................................................................. 4 主減速器中的主、從螺旋錐齒輪的支承和安裝的方式 .............................. 5 主減速器的減速型式 ...................................................................................... 5 主減速器的計(jì)算 ......................................................................................................... 5 主減速器齒輪計(jì)算載荷確定 .......................................................................... 5 主減速器從動(dòng)齒輪的平均計(jì)算轉(zhuǎn)矩 T3 ......................................................... 6 主減速器的齒輪基本參數(shù)選擇 ................................................................................. 6 主、從動(dòng)螺旋錐齒輪齒數(shù)的選擇 .................................................................. 6 從動(dòng)螺旋錐齒輪的模數(shù)和節(jié)圓直徑 .............................................................. 7 螺旋錐齒輪齒寬 F........................................................................................... 7 螺旋角 β 的確定 ............................................................................................ 7 螺旋錐齒輪的螺旋方向的確定 ...................................................................... 8 法向壓力角的確定 .......................................................................................... 8 主減速器的主、從螺旋錐齒輪的詳細(xì)尺寸 ............................................................. 8 主減速器螺旋錐齒輪的強(qiáng)度計(jì)算 ............................................................................. 9 齒輪的損壞形式 .............................................................................................. 9 主減速器螺旋錐齒輪的強(qiáng)度計(jì)算 .................................................................. 9 螺旋 錐齒輪的彎曲強(qiáng)度計(jì)算 ........................................................................ 10 螺旋錐齒輪的齒面接觸強(qiáng)度計(jì)算 ................................................................ 12 主減速器軸承的計(jì)算 ............................................................................................... 13 主減速器主動(dòng)錐齒輪上的當(dāng)量轉(zhuǎn)矩 ............................................................ 13 螺旋錐齒輪齒面寬中點(diǎn)處的圓周力 ............................................................ 13 螺旋錐齒輪的軸向力和徑向力 .................................................................... 13 主減速器的軸承載荷計(jì)算 ............................................................................ 14 4 差速器 ............................................................................................................................... 17 差速器的結(jié)構(gòu)型式選擇 ........................................................................................... 17 對(duì)稱(chēng)式圓錐行星齒輪差速器的結(jié)構(gòu) ....................................................................... 17 對(duì)稱(chēng)式圓 錐行星齒輪差速器 ................................................................................... 17 差速器齒輪的基本參數(shù) ................................................................................ 17 差速器齒輪的主要尺寸 ................................................................................ 18 差速器齒輪的強(qiáng)度計(jì)算 ................................................................................ 20 5 半軸 .................................................................................................................................... 22 半軸型式的確定 ....................................................................................................... 22 全浮式半軸的設(shè)計(jì)計(jì)算 .......................................................