KD3010型自卸汽車變速器設(shè)計(jì)目錄.doc

KD3010型自卸汽車變速器設(shè)計(jì)摘 要本文詳細(xì)介紹了本次設(shè)計(jì)的主要內(nèi)容、設(shè)計(jì)方法、設(shè)計(jì)理念、設(shè)計(jì)思路及設(shè)計(jì)心得等與設(shè)計(jì)有關(guān)的方方面面 ，首先，結(jié)合所設(shè)計(jì)的車型及當(dāng)今國內(nèi)外各車型變速器的發(fā)展現(xiàn)狀、發(fā)展趨勢選定本次設(shè)計(jì)采用的方案中間軸式變速器，中間軸式變速器設(shè)計(jì)先進(jìn)，結(jié)構(gòu)獨(dú)特，兩軸軸線在同一條直線上，經(jīng)同步器將它們連接后即可得到直接擋。其動力從第一軸輸入，然后流至中間軸，最后于第二軸輸出。本次設(shè)計(jì)車型為輕型自卸汽車，則中間軸式變速器比較適合，且行駛利用率較高的五擋為傳動效率（可達(dá)90%以上）較高的直接擋，噪聲低、齒輪和軸承的磨損減少，因而大大提高了變速器的壽命。接著進(jìn)行了變速器檔數(shù)、各檔傳動比及齒輪幾何參數(shù)的確定。然后又布置草圖和變速器總裝配圖、軸的尺寸確定、換檔機(jī)構(gòu)的布置等。對中間軸、主軸進(jìn)行了強(qiáng)度及剛度的校核計(jì)算。而后又對一擋及倒擋齒輪進(jìn)行了彎曲應(yīng)力和接觸應(yīng)力的計(jì)算，本次設(shè)計(jì)在設(shè)計(jì)方法上充分運(yùn)用了計(jì)算機(jī)技術(shù)、機(jī)械類設(shè)計(jì)手冊、設(shè)計(jì)軟件。設(shè)計(jì)思想上秉著好造、好用的原則，盡力使各零件標(biāo)準(zhǔn)化、系列化、通用化！從而滿足變速器產(chǎn)品的系列化設(shè)計(jì)。 關(guān)鍵詞：3010型自卸汽車，變速器，中間軸，強(qiáng)度計(jì)算 KD3010 TYPE DUMP TRUCK GEARBOX DESIGN ABSTRACTThis paper describes the design of the current content,design methods, design concept, design ideas and design experience-such as design-related aspects. First, the integration of design models and models of the current domestic and international transmission of the current state of development Trend selected the designing of the program - Middle coaxial transmission! Middle coaxial transmission advanced design, unique structure, the two axis with a straight line, by synchronizing them can be connected directly block. Dynamic input shaft from the first, and then flow to the intermediate shaft, the final output in the second axis. The design of the vehicle after the moving higher utilization Trouble for transmission efficiency (up to 90%) higher direct block low noise.gear and bearing wear reduction,thereby greatly increasing the transmission of life.Then a few Transmission stall, stall transmission gear ratio and the geometric parameters determined. Then Layout Plan and the total transmission assembly,the axis to determine the size, shifting the layout.On the intermediate shaft, the axis of strength and stiffness of checking calculation. And then right one block and reverse gear for the bending stress and contact stress calculation! The design methods in the design of the full use of computer technology, mechanical design manual design software.The design ideologically animated create good, useful principle and try to make the parts standardization, serialization, and generalized! Then to meet the Series Design of Transmission products. KEY WORDS： kd3010 type dump truck gearbox design，transmission，intermediate shaftstrength符號說明A 中心距D 直徑E 彈性模量 動比 發(fā)動機(jī)最大輸出扭矩 機(jī)械效率 齒輪齒數(shù) 節(jié)點(diǎn)處法向壓力角 螺旋角 彎曲應(yīng)力 接觸應(yīng)力 圓周力 徑向力 軸向力I 慣性矩f 撓度 轉(zhuǎn)角M 彎矩m 模數(shù) 目 錄 第一章 變速器概述及方案的確定 1 1.1變速器功用要求1 1.2變速器方案確定 1 1.2.1傳動機(jī)構(gòu)布置方案分析比較1 1.2.2倒擋傳動方案6 1.3變速器零件結(jié)構(gòu)方案 7第二章 各檔傳動比與齒輪幾何參數(shù)的確定11 2.1 變速器各檔參數(shù)選擇11 2.2 傳動比及齒輪數(shù)確定14 2.3齒輪變位系數(shù)的選擇16第三章 軸的選擇與齒輪強(qiáng)度驗(yàn)算18 3