【正文】 關鍵詞： 輕型客車；驅(qū)動橋；主減速器；差速器；車輪傳動裝置；驅(qū)動橋殼； Abstract Drive bridge as the one of four auto assembly ,Its performance directly affects the performance of the whole vehicle ,for passenger cars、 trucks is particularly important .When the engine power output larger torque In order to meet the current needs of various passenger car, truck the fast,high efficiency of different load , high efficiency needs,It must match a safe and reliable and high performance driving axle .The design of the bus driver bridge was referring to the drive axle of the traditional design method .This article first through the type and parameters of main ponents of search ,the structure and design parameters of the main ponents . After the reference to the similar driving axle structure, so as to determine the overall design scheme .Finally, check the strength of the main, driven bevel gear, differential plaary gear cone, a half axle gear, full floating axle and axle housing ,also check the bearing’s working life . Keywords: light bus . driving drive. drive axle housing . 目 錄 摘 要 ............................................................................................................................ I Abstract .......................................................................................................................... II 前 言 ........................................................................................................................III 第一章 驅(qū)動橋的結(jié)構(gòu)方案設計 ....................................................................................... 7 ........................................................................................................ 7 第二章 主減速器設計 ..................................................................................................... 9 初步估算減速器傳動比 ................................................................................... 10 主減速器的結(jié)構(gòu)形式 ...................................................................................... 10 主減速器的輪齒類型 .............................................................................. 10 主減速器的減速形式 .............................................................................11 主減速器的主、從動錐齒輪的設計 ........................................................11 主減速器基本參數(shù)選擇與計算載荷的確定 ....................................................... 13 主減速器傳動比的確定 .......................................................................... 13 確定主減速器的載荷，用齒輪計算 ....................................................... 14 主減速器錐齒輪的強度計算 ............................................................................ 18 單位齒長圓周力 ................................................................................... 18 輪齒彎曲強度 ...................................................................................... 19 輪齒接觸強度 ...................................................................................... 21 第三章 差速器設計 ...................................................................................................... 21 差速器的結(jié)構(gòu)形式選擇 ................................................................................... 22 差速器主要參數(shù)選擇 ...................................................................................... 23 行星齒輪數(shù) n ......................................................................................... 23 行星齒輪球面半徑 ................................................................................. 23 行星齒輪與半軸齒輪的齒數(shù) ................................................................... 24 行星齒輪與半軸齒輪節(jié)錐角與模數(shù) ......................................................... 24 分度圓直徑 ............................................................................................ 25 半軸齒輪齒面寬 ................................................................................... 25 齒 頂高 ................................................................................................... 25 壓力角 ................................................................................................. 25 差速器齒輪強度計算 ...................................................................................... 26 第四章 車輪傳動裝置設計 ............................................................................................ 27 車輪傳動 裝置結(jié)構(gòu)的選擇 ............................................................................... 28 半軸的設計與計算 .......................................................................................... 28 初選直徑 ............................................................................................... 29 強度校核 ............................................................................................. 29 半軸的結(jié) 構(gòu)設計及材料與熱處理 ....................................................................... 30 第五章 驅(qū)動橋殼設計 ................................................................................................... 30 驅(qū)動橋殼結(jié)構(gòu)方案分析 ..................................................................................... 31 驅(qū)動橋殼強度計算 .......................................................................................... 31 第六章 驅(qū)動橋的結(jié)構(gòu)元件 ............................................................................................ 33 支承軸承的預緊 ............................................................................................. 33 錐齒輪嚙合調(diào)整 ............................................................................................. 34 潤滑 ............................................