【正文】 I 摘 要 驅(qū)動橋作為汽車四大總成之一，它的性能好壞直接影響整車性能，而對于載貨汽車顯得尤為重要。當(dāng)采用大功率發(fā)動機輸出大的轉(zhuǎn)矩以滿足目前載貨汽車的快速、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。 本次設(shè)計任務(wù)是設(shè)計一款用于輕型載貨貨車后驅(qū)動橋，設(shè)計中對驅(qū)動橋的主減速器、差速器進(jìn)行了類型的分析、選擇、計算及校核。根據(jù)最大轉(zhuǎn)矩、滾動半徑等重要參數(shù)，選擇最大及最小傳動比。結(jié)合運用汽車設(shè)計、汽車?yán)碚摗C械設(shè)計、機械原理等知識，完成相關(guān)計算及校核，畫出裝配圖及零件圖。 在驅(qū)動橋的總成設(shè)計中，參考了一些 國家相關(guān)標(biāo)準(zhǔn)，同時考慮到和其他汽車總成之間的協(xié)調(diào)，爭取做到滿足汽車使用要求的同時，能減少自身的重量，以減少制造成本。驅(qū)動橋個零件設(shè)計時，需要選取各種各樣的參數(shù)，參數(shù)的選擇是根據(jù)具體的條件來的，有些參數(shù)在樹上找不到相應(yīng)根據(jù)所以必須的選擇時根據(jù)具體的條件來的，有些參數(shù)在書上找不到，相應(yīng)的根據(jù)，所以必須查閱相關(guān)的工具書籍和資料，以保證設(shè)計的科學(xué)性和準(zhǔn)確性。 全套圖紙，加 153893706 關(guān)鍵詞： 驅(qū)動橋；軸荷分配；動力性；通過性；操作穩(wěn)定性； II III ABSTRACT Drive axle assembly of a vehicle one of the four, it directly affects the performance of vehicle performance, and is particularly important for the truck. When using large highpower engine output torque to meet the current truck39。s fast, efficient, costeffective and necessary, must be with an efficient, reliable drive axle. The design task is to design a lightladen truck used after the drive axle, drive axle design on the main gear box, differential for the type of analysis, selection, calculation and checking. Based on the maximum torque, the rolling radius and other important parameters, select the maximum and minimum transmission ratio. Combination of automotive design, automotive theory, mechanical design, mechanical principles of such knowledge, plete the relevant calculation and check, draw assembly drawings and part drawings. In the drive axle assembly design, with reference to some of the relevant national standards, taking into account the assembly and coordination between other cars, and strive to achieve to meet automotive requirements, while reducing the weight of its own, in order to reduce manufacturing costs. Drive axle design of parts, need to select a variety of parameters, parameter selection is based on specific conditions, some parameters can not find the tree must be the appropriate choice according to specific conditions to, and some parameters can not find in the book, the corresponding basis, so the books must be access to relevant tools and information to ensure that the design of scientific and accurate. Keywords: Drive axle。 Axle load distribution。 Dynamic。 Through sex。 Operational stability IV 目 錄 摘 要 .................................................................................................................................... I Abstract ................................................................................................................................III 第一章 緒 論 .............................................................................................................. 1 選題的目的及意義 ................................................................................................... 1 國內(nèi)外研究現(xiàn)狀 ....................................................................................................... 2 相關(guān)領(lǐng)域已有的研究成果 ....................................................................................... 3 設(shè)計的主要內(nèi)容 ....................................................................................................... 4 設(shè)計的主要數(shù)據(jù) ....................................................................................................... 4 第二章 主減速器的設(shè)計 ................................................................................................ 6 主減速器的結(jié)構(gòu)型式的選擇 ................................................................................... 6 主減速器的減速型式 ...................................................................................... 6 主減速器齒輪的類型的選擇 .......................................................................... 7 主減速器主動錐齒輪的支承形式 .................................................................. 9 主減速器從動錐齒輪的支承形式及安置方法 ............................................ 10 主減速器的基本參數(shù)選擇與設(shè)計計算 .............................................................. 11 主減速器計算載荷的 確定 ............................................................................ 11 主減速器基本參數(shù)的選擇 ............................................................................ 13 主減速器雙曲面齒輪的幾何尺寸計算 ........................................................ 17 主減速器雙 曲面齒輪的強度計算 ................................................................ 25 主減速器齒輪的材料及熱處理 .................................................................... 29 主減速器軸承的選擇 ............................................................................................. 30 計算轉(zhuǎn)矩的確定 ............................................................................................ 30 齒寬中點處的圓周力 .................................................................................... 31 雙曲面齒輪所受的軸向力和徑向力 ............................................................ 31 主減速器軸承載荷的計算 及軸承的選擇 .................................................... 32 本章小結(jié) ................................................................................................................. 36 第三章 差速器的設(shè)計 ................................................................................................... 37 差速器結(jié)構(gòu)形式的選擇 ......................................................................................... 37 V 對稱式圓錐行星齒輪差速器的差速原理 ............................................................. 39 對稱式圓錐行星齒輪差速器的結(jié)構(gòu) ..................................................................... 40 對稱式圓錐行星齒輪差速器的設(shè)計 ..................................................................... 40 差速器齒輪的基本參數(shù)的選擇 .................................................................... 40 差速器齒輪的幾何計算 ................................................................................ 43 差速器齒輪的強度計算 ................................................................................ 44 本章小結(jié) ................................................................................................................. 45 第四章 驅(qū)動半軸的設(shè)計 .................