轎車變速器設(shè)計(jì)全套畢業(yè)設(shè)計(jì)
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- 轎車變速器設(shè)計(jì)全套畢業(yè)設(shè)計(jì)
目錄
前言 1
1 汽車的總體設(shè)計(jì) 6
1.1 汽車類型的確定 6
1.1.1 按汽車的用途分類 6
1.1.2 按動(dòng)力裝置的類型分類 7
1.1.3 轎車發(fā)動(dòng)機(jī)與驅(qū)動(dòng)橋在汽車位置上的分類 7
1.2 汽車主要參數(shù)的選擇 7
1.2.1 汽車主要尺寸參數(shù)的選擇 7
1.2.2 汽車質(zhì)量參數(shù)的確定 8
1.2.3 汽車主要性能參數(shù)的選擇 ８
1.3 汽車發(fā)動(dòng)機(jī)的選型 ８
2 變速器的設(shè)計(jì) 10
2.1 概述 11
2.2 變速器的結(jié)構(gòu)分析與型式選擇 11
2.3 汽車變速器的擋數(shù)和各檔傳動(dòng)比的確定 13
2.3.1 汽車傳動(dòng)系統(tǒng)最小傳動(dòng)比的選擇 13
2.4 轎車變速器機(jī)構(gòu)方案的選擇 14
2.5 變速器的設(shè)計(jì)參數(shù)選擇 16
2.5.1 中心距A 16
2.5.2 外形尺寸 16
2.5.3 軸的直徑 16
2.6 齒輪參數(shù) 17
2.7 各檔齒輪齒數(shù)的分配 18
2.8 輪齒強(qiáng)度計(jì)算 20
2.9 軸的設(shè)計(jì)計(jì)算 22
2.10 軸的強(qiáng)度計(jì)算 22
2.11 同步器的選擇 24
3 變速器的操縱機(jī)構(gòu) 25
4 結(jié)論 28
致謝 29
參考文獻(xiàn) 30
附錄A 31
附錄B 35
摘要
隨著汽車工業(yè)的發(fā)展，汽車已經(jīng)進(jìn)入了百姓家庭，進(jìn)入人們生活。所以變速器作為汽車主要的零件之一，我們必須對變速器作出進(jìn)一步研究。
發(fā)動(dòng)機(jī)的輸出轉(zhuǎn)速非常高，最大功率及最大扭矩在一定的轉(zhuǎn)速區(qū)出現(xiàn)。為了發(fā)揮發(fā)動(dòng)機(jī)的最佳性能，就必須有一套變速裝置，來協(xié)調(diào)發(fā)動(dòng)機(jī)的轉(zhuǎn)速和車輪的實(shí)際行駛速度。在經(jīng)濟(jì)方面考慮合適的變速器也非常重要。
本次設(shè)計(jì)對轎車變速器的結(jié)構(gòu)進(jìn)行了介紹，闡述了轎車主要參數(shù)的確定，發(fā)動(dòng)機(jī)參數(shù)的確定以及對功率大小直接影響到變速器中各個(gè)零件的強(qiáng)度進(jìn)行介紹。在機(jī)構(gòu)方面的選擇了機(jī)械式變速器，確定變速器設(shè)計(jì)的主要參數(shù)，在變速器的壽命方面和以及與變速器相關(guān)的各種操縱機(jī)構(gòu)也進(jìn)行了介紹。
關(guān)鍵詞：變速器；扭矩；操縱機(jī)構(gòu)
Abstract
Along with the automobile industry development, the automobile already enter the common people’s family, enter the people’s life. Therefore, the transmission gearbox took one of automobile main components, we must make further research for the transmission gearbox.
The engine output rotational speed is extremely high, the maximum work rate and the maximum torque appears in certain rotational speed area. In order to display the engine the optimum performance, it must has a set of variable speed gear, coordinates the engine the rotational speed and the wheel actual moving velocity. In the economical aspect considered the appropriate transmission gearbox extremely is also important.
This design has carried on the introduction to the passenger vehicle transmission gearbox structure, elaborated the passenger vehicle main parameter determination, the engine conditions determination as well as affects directly to the amount of power to the transmission gearbox in each components intensity carries on the introduction. In the organization aspect choice mechanical type transmission gearbox, the main parameter which the definite transmission gearbox designed, and as well as has also carried on the introduction in the transmission gearbox life aspect with the transmission gearbox correlation each kind of control mechanism. Thus lets us understand a transmission gearbox also better use.
Key word: Transmission gearbox; Torque; Control mechanism
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