KD1060型載貨汽車(chē)設(shè)計(jì)（變速器總成設(shè)計(jì)）
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- 摘 要
汽車(chē)的誕生，車(chē)的發(fā)展，在歷史的長(zhǎng)河中給我們留下了點(diǎn)點(diǎn)滴滴。汽車(chē)自上個(gè)世紀(jì)末誕生以來(lái)，已經(jīng)走過(guò)了風(fēng)風(fēng)雨雨的一百多年。從卡爾.本茨造出的第一輛三輪汽車(chē)以每小時(shí)18公里的速度，跑到現(xiàn)在，竟然誕生了從速度為零到加速到100公里/小時(shí)只需要三秒鐘多一點(diǎn)的超級(jí)跑車(chē)。這一百年，汽車(chē)發(fā)展的速度是如此驚人！同時(shí)，汽車(chē)工業(yè)也造就了多位巨人，他們一手創(chuàng)建了通用、福特、豐田、本田這樣一些在各國(guó)經(jīng)濟(jì)中舉足輕重的著名公司。這篇資寫(xiě)著許多有趣的故事，在中國(guó)已經(jīng)成為世界五大汽車(chē)強(qiáng)國(guó)之際，讓我們一起來(lái)回望汽車(chē)的發(fā)展歷史，體會(huì)汽車(chē)給我們帶來(lái)的種種歡樂(lè)與夢(mèng)想……
變速器作為汽車(chē)的一個(gè)重要組成部分，是用來(lái)改變發(fā)動(dòng)機(jī)傳到驅(qū)動(dòng)輪上的轉(zhuǎn)矩和轉(zhuǎn)速，目的是在原地起步、爬坡、轉(zhuǎn)彎、加速等各種行駛工況下使汽車(chē)獲得不同的牽引力和速度。
變速器有機(jī)械式手動(dòng)變速器和機(jī)械式無(wú)級(jí)變速器兩種，如果變速器擋位多其動(dòng)力性和經(jīng)濟(jì)性得到保證，擋位少其操縱方便，本次設(shè)計(jì)我設(shè)計(jì)的是輕型載貨汽車(chē)變速器，本次設(shè)計(jì)中我對(duì)其傳動(dòng)比作了仔細(xì)的分析計(jì)算并參考相關(guān)車(chē)型最終確定了各擋的傳動(dòng)比，針對(duì)變速器的傳動(dòng)機(jī)構(gòu)方案的布置作了詳細(xì)的分析最終選用4+1擋中間軸式變速器，換擋形式采用同步器換擋。結(jié)合總體的要求操縱機(jī)構(gòu)形式選用直接操縱機(jī)構(gòu)形式。本次設(shè)計(jì)的變速器即滿足了汽車(chē)必要的動(dòng)力性也滿足了其經(jīng)濟(jì)性的指標(biāo)。最后通過(guò)對(duì)齒輪、軸、鍵、軸承等的校核，其變速器的尺寸及其部件的強(qiáng)度都滿足設(shè)計(jì)要求。
關(guān)鍵詞：變速器，設(shè)計(jì)，輕型載貨汽車(chē)，傳動(dòng)比
目錄
第一章 概述 ······················································1
第二章 變速器傳動(dòng)機(jī)構(gòu)布置 ···································· 2
§2.1 傳動(dòng)機(jī)構(gòu)布置方案分析 ··································· 2
§2.2 零部件結(jié)構(gòu)方案分析 ·····································6
第三章 變速器主要參數(shù)的選擇 ································· 9
§3.1 中心距A ················································· 9
§3.2 齒輪參數(shù)的選取 ········································· 10
§3.3 各擋齒輪齒數(shù)的分配及傳動(dòng)比計(jì)算······················ 13
第四章 變速器的設(shè)計(jì)與計(jì)算 ·································· 16
§4.1 軸的計(jì)算與校核 ········································· 16
§4.2 齒輪的計(jì)算與校核 ······································ 19
§4.3 軸承的計(jì)算與校核 ······································ 22
§4.4 鍵的校核計(jì)算 ··········································· 23
第五章 同步器的設(shè)計(jì) ·········································· 25
第六章 變速器操縱機(jī)構(gòu)設(shè)計(jì) ···································27
結(jié) 論 ····························································28
參考文獻(xiàn) ························································ 29
致 謝 ····························································30 ...
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