【正文】 究進展 .................................................................................................1 國外研究進展 .................................................................................................2 驅(qū)動橋的種類 ...........................................................................................................3 非斷開式驅(qū)動橋 .............................................................................................4 斷開式驅(qū)動橋 .................................................................................................4 驅(qū)動橋結(jié)構(gòu)組成 .......................................................................................................5 主減速器 .........................................................................................................5 差速器 .............................................................................................................9 半軸 .................................................................................................................9 橋殼 ...............................................................................................................10 設(shè)計的主要內(nèi)容 .....................................................................................................10 第 2 章 主減速器設(shè)計 .................................................................................. 12 主減速器結(jié)構(gòu)方案的分析及確定 .........................................................................12 主減速器比的計算 .......................................................................................12 主減速器結(jié)構(gòu)方案的確定 ............................................................................13 主減速器齒輪設(shè)計 .................................................................................................13 主減速器齒輪參數(shù)的選擇 ...........................................................................13 主減速器齒輪計算載荷的確定 ...................................................................14 主減速器齒輪的材料及熱處理 .............................................................................15 主減速器螺旋錐齒輪的計算 .................................................................................16 主減速器螺旋錐齒輪的幾何尺寸計算 .......................................................16 主減速器螺旋錐齒輪的強度計算 ...............................................................17 ii 主減速器軸承的計算 .............................................................................................19 主減速器的潤滑 .....................................................................................................22 本章小結(jié) .................................................................................................................23 第 3 章 差速器設(shè)計 ...................................................................................... 24 差速器結(jié)構(gòu)方案的分析及確定 .............................................................................24 普通錐齒輪式差速器設(shè)計 .....................................................................................24 對稱式圓錐行星齒輪差速器 .......................................................................24 差速器齒輪的基本參數(shù)選擇 ........................................................................25 差速器齒輪的材料 ..................................................................................................26 差速器齒輪的幾何尺寸計算與強度計算 .............................................................27 差速器齒輪的幾何尺寸計算 ........................................................................27 差速器齒輪的強度計算 ...............................................................................28 本章小結(jié) .................................................................................................................29 第 4 章 半軸設(shè)計 ......................................................................................... 30 半軸形式的確定 .....................................................................................................30 半軸的設(shè)計與計算 .................................................................................................30 半軸的設(shè)計 ...................................................................................................30 全浮式半軸的設(shè)計計算 ...............................................................................32 半軸的結(jié)構(gòu)設(shè)計及材料與熱處理 .........................................................................33 本章小結(jié) .................................................................................................................33 第 5 章 驅(qū)動橋橋殼的校核 .......................................................................... 34 驅(qū)動橋橋殼形式的確定 .........................................................................................34 橋殼的受力分析及強度計算 .................................................................................34 橋殼的靜彎曲應力計算 ...............................................................................34 在不平路面沖擊載荷作用下橋殼的強度計算 ...........................................35 汽車以最大牽引力行駛時的橋殼的強度計算 ...........................................35 汽車緊急制動時的橋殼強度計算 ...............................................................37 汽車受最大側(cè)向力時橋殼的強度計算 .......................................................38 本章小結(jié) .................................................................................................................41 結(jié)論 ............................................................................................................... 42 參考文獻 ....................................................................................................... 43 iii 致謝 ............................................................................................................... 44 附錄 ……………………………………………………………………………………… 45 1 第 1 章 緒 論 汽車驅(qū)動橋 概述 汽車驅(qū)動橋位于傳動系的末端，其基本功用是增大由傳動軸或直接從變速器傳來的 轉(zhuǎn)矩，將轉(zhuǎn) 矩合理的分配給左、右驅(qū)動車輪具有汽車行駛運動學所要求的差速功能 ；同 時，驅(qū)動橋還 要承受作用于路面和車架或車廂之間的鉛垂力、縱向力和橫向力。當采用大功率發(fā)動機輸出大的轉(zhuǎn)矩以滿足目前載重汽車的快速、重載的高效率、高效益的需要時，必須要搭配一個高效、可靠的驅(qū)動橋。s Degree The Design for Driving Axle of Heavy Truck Candidate：