摘要本次中型貨車變速器的設(shè)計(jì)，主要目的是檢驗(yàn)大學(xué)四年的學(xué)習(xí)成果以及為將來的工作打下堅(jiān)實(shí)的基礎(chǔ)。文中闡述了變速器的功用與設(shè)計(jì)要求，對(duì)該變速器進(jìn)行了了大量的調(diào)查研究，并進(jìn)行了初步的方案論證，根據(jù)設(shè)計(jì)要求決定選用了三軸式五檔變速器，中間軸采用旋轉(zhuǎn)式，倒檔的換檔方式采用二軸上滑動(dòng)齒輪換檔，其他檔位采用同步器換檔，根據(jù)輕型貨車的要求，操縱機(jī)構(gòu)選用遠(yuǎn)距離操縱。說明并論證了變速器主要參數(shù)的確定，齒輪幾何參數(shù)的計(jì)算、列表、齒輪材料的選擇、齒輪的強(qiáng)度計(jì)算、強(qiáng)度校核，軸的設(shè)計(jì)及強(qiáng)度剛度校核，軸的材料選擇，軸承的選擇，花鍵的選擇和校核。并簡(jiǎn)單介紹了變速器的拆裝順序，以及對(duì)本次設(shè)計(jì)做出總結(jié)。整個(gè)畢業(yè)設(shè)計(jì)歷時(shí)兩個(gè)多月，在老師的悉心指導(dǎo)和同學(xué)的熱心幫助下得以順利完成。最后感謝在畢業(yè)設(shè)計(jì)期間給予我?guī)椭睦蠋熀屯瑢W(xué)。本次設(shè)計(jì)，計(jì)算機(jī)繪制 1 張 A0 號(hào)圖紙，翻譯外文資料一份，編寫 MATLAB語言程序 1 份，以及編輯說明書一份關(guān)鍵詞：變速器，設(shè)計(jì)，三軸式，倒檔軸ABSTRACTThe design of this light truck transmission, the main purpose is to test the results of four years of study in the university and lay a solid foundation for the future work.This design explained the function of the transmission and design requirements, had the transmission a large number of surveys and studies, and conducted a preliminary studies program. According to the design requirement to choose a three-axis 4th speed transmission and the fixed middle shaft, the reverse stall used to shift the gear on the reverse gear shaft, the other stalls used Synchronizer shift, according to the design requirements of the light truck,the manipulation agencies use remote control. Noted and demonstrated that the transmission parameters, the calculations and the list of gear geometry parameters,the gear material selection,gear strength and strength check, the design of the shaft and stiffness and strength check,shaft material selection, bearing selection,spline options and check.And briefly introduce the transmission disassembly sequence, as well as a summary of this design.The whole graduation design lasts three months, and it is completed under the teacher's leading and the help of the classmate smoothly. Finally thanks to the teachers and classmates who give me much help during the graduation design.This design, includes 1 No.0 diagram papers and 2 copies of three-dimensional graph by computer and manual drawing, translating a foreign information, preparing four MATLAB Programming Language, and edit a manual.Keyword: transmission, design, three-axis, the reverse gear shaft2012 年 5 月 18 日