KD3010型自卸汽車變速器設計目錄.doc

KD3010型自卸汽車變速器設計摘 要本文詳細介紹了本次設計的主要內(nèi)容、設計方法、設計理念、設計思路及設計心得等與設計有關的方方面面 ，首先，結合所設計的車型及當今國內(nèi)外各車型變速器的發(fā)展現(xiàn)狀、發(fā)展趨勢選定本次設計采用的方案中間軸式變速器，中間軸式變速器設計先進，結構獨特，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。本次設計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、換檔機構的布置等。對中間軸、主軸進行了強度及剛度的校核計算。而后又對一擋及倒擋齒輪進行了彎曲應力和接觸應力的計算，本次設計在設計方法上充分運用了計算機技術、機械類設計手冊、設計軟件。設計思想上秉著好造、好用的原則，盡力使各零件標準化、系列化、通用化！從而滿足變速器產(chǎn)品的系列化設計。 關鍵詞：3010型自卸汽車，變速器，中間軸，強度計算 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)動機最大輸出扭矩 機械效率 齒輪齒數(shù) 節(jié)點處法向壓力角 螺旋角 彎曲應力 接觸應力 圓周力 徑向力 軸向力I 慣性矩f 撓度 轉角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傳動機構布置方案分析比較1 1.2.2倒擋傳動方案6 1.3變速器零件結構方案 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 軸的選擇與齒輪強度驗算18 3