【正文】 y’ heavy truck， must exploiting the high driven efficiency single reduction final drive axle is being the heavy truck’ developing tendency. Drive axle should be designed to ensure the best dynamic and fuel economy on given condition. According to the design parameters given ,firstly determine the overall vehicle parametres in accordance with the traditional design methods and reference the same vehicle parameters, then identify the main reducer, differential, axle and axle housing structure type, finally design the parameters of the main gear,the driven gear of the final drive, axle gears and spiral bevel gear and check the strength and life of them. In design process of the drive axle,we should ensure a reasonable structure, practical applications, the design of assembly and parts as much as possible meeting requirements of the standardization of parts, ponents and products’ univertiality and the serialization and change , convenience of repair and maintenance, good mechanical technology, being easy to manufacture. Keywords: Pickup truck。 Single reduction final drive。 Axle。 第 1 章 緒論 ........................................................................................................................1 選題的背景 目的及意義 .........................................................................................1 國內(nèi)外驅(qū)動橋研究狀況 .........................................................................................1 設(shè)計主要內(nèi)容 和 預期結(jié)果 .....................................................................................3 第 2 章 驅(qū)動橋的總體方案確定 ...................................................................................4 驅(qū)動橋的種類結(jié)構(gòu)和設(shè)計要求 ..............................................................................4 汽車車橋的種類 ...........................................................................................4 驅(qū)動橋的種類 ...............................................................................................4 驅(qū)動橋結(jié)構(gòu)組成 ...........................................................................................4 驅(qū)動橋設(shè)計要求 ..........................................................................................5 設(shè)計車型主要參數(shù) .................................................................................................5 主減速器結(jié)構(gòu)方案 的確定 ......................................................................................6 主減速比的計算 ..........................................................................................6 主減速器的齒輪類型 ..................................................................................6 主減速器的減速形式 ..................................................................................8 主減速器主從動錐齒輪的支承形式 及安裝方法 ......................................9 差速器結(jié)構(gòu)方案的確定 .......................................................................................10 半軸的形式確定 .................................................................................................... 11 橋殼形式的確定 ...................................................................................................12 本章小結(jié) ................................................................................................................13 第 3 章 主減速器設(shè)計 ...................................................................................................14 概述 ........................................................................................................................14 主減速器齒輪參數(shù)的選擇與強度計算 ................................................................14 主減速器計算載荷的確定 ........................................................................14 主減速器齒輪參數(shù)的選擇 ........................................................................15 主減速器齒輪強度計算 ............................................................................18 黑龍江工程學院本科生畢業(yè)設(shè)計 ii 主減速器軸承計算 ....................................................................................24 主減速器齒輪材料及熱處理 .................................................................................30 主減速器的潤滑 .....................................................................................................30 本章小結(jié) ................................................................................................................31 第 4 章 差速器設(shè)計 ........................................................................................................32 概述 .........................................................................................................................32 對稱式圓錐行星齒輪差速器原理 .........................................................................32 對稱式圓錐行星齒輪差速器的結(jié)構(gòu) ....................................................................33 對稱圓錐行星錐齒輪差速器的設(shè)計 .....................................................................34 差速器齒輪的基本參 數(shù)選擇 ....................................................................34 差速器齒輪的幾何尺寸計算 ....................................................................36 差速器齒輪的 強度 計算 ............................................................................37 差速器齒輪的材料 ....................................................................................39 本章小結(jié) ................................................................................................................39 第 5 章 半軸設(shè)計 ............................................................................................................40 概述 .........................................................................................................................40 半軸的設(shè)計與計算 .................................................................................................40 全浮式半軸的計算載荷的確定 .................................................................40 半軸桿部直徑的初選 .................................................................................42 全浮式半軸強度計算 .....................................................................