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黑龍江工程學院本科生畢業(yè)設計（論文）
摘 要
從汽車誕生時起，汽車變速器在汽車傳動系中扮演著至關重要的角色?，F(xiàn)代汽車上廣泛采用內燃機作為動力源，其轉矩和轉速變化范圍較小，而復雜的使用條件則要求汽車的動力性和燃油經濟性能在相當大的范圍內變化。為解決這一矛盾，在傳動系統(tǒng)中設置了變速器。
本文以哈飛路寶汽車的一些整車參數(shù)和發(fā)動機參數(shù)為依據(jù)，進行變速器的設計。設計的主要內容包括變速器傳動機構布置方案的確定，變速器主要參數(shù)如擋數(shù)、傳動比范圍、中心距、各擋傳動比、外形尺寸、齒輪參數(shù)、各擋齒輪齒數(shù)的選擇，齒輪、軸、軸承的設計校核，同步器、操縱機構及箱體的設計及對軸的有限元分析。
在設計的過程中，本文根據(jù)轎車變速器的設計要求和車輛動力傳動系統(tǒng)自身的特點，參考多篇文獻資料，以及國內外變速器設計圖冊，從經濟性和實用性方面著手進行分析,設計出一種兩軸式五擋變速器。
關鍵詞：變速器；齒輪；軸；箱體；設計
ABSTRACT
Since automobile was born, the transmission has played a critical role in the drivetrain. Modern cars widely uses engines as the power source. The range of torque and speed are small, but complex using conditions require the automobile’s dynamic and fuel economical efficiency can change in a very large range. To solve this contradiction, transmission is set up in the drivetrain.
The transmission is designed based on engine parameters and vehicle parameters of Ha Fei Lu Bao automobile in this text. The main design contents include the layout program of transmission drive-mechanism, the selection of main transmission parameters such as shifts, the range of gear ratio, center-spacing, each gear ratio, size, gear parameters and the numble of each gear, the design and verification of gears, shafts and bearings, the design of synchronizer, manipulation-framework and gearbox.
Bases on the design requirement and the characteristic of power transmission system, consulting a great deal of literatures and transmission design drafts from both home and overseas,at economical efficiency and practicability angle, a small kind of two-shafted five block transmission is designed.
Key words: Transmission；Shell；Gear；Shaft；Design
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