KD1060型載貨汽車設(shè)計(jì)（變速器總成設(shè)計(jì)）
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- 摘 要
汽車的誕生，車的發(fā)展，在歷史的長河中給我們留下了點(diǎn)點(diǎn)滴滴。汽車自上個(gè)世紀(jì)末誕生以來，已經(jīng)走過了風(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)的超級跑車。這一百年，汽車發(fā)展的速度是如此驚人！同時(shí)，汽車工業(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經(jīng)濟(jì)中舉足輕重的著名公司。這篇資寫著許多有趣的故事，在中國已經(jīng)成為世界五大汽車強(qiáng)國之際，讓我們一起來回望汽車的發(fā)展歷史，體會汽車給我們帶來的種種歡樂與夢想……
變速器作為汽車的一個(gè)重要組成部分，是用來改變發(fā)動機(jī)傳到驅(qū)動輪上的轉(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獲得不同的牽引力和速度。
變速器有機(jī)械式手動變速器和機(jī)械式無級變速器兩種，如果變速器擋位多其動力性和經(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)的是輕型載貨汽車變速器，本次設(shè)計(jì)中我對其傳動比作了仔細(xì)的分析計(jì)算并參考相關(guān)車型最終確定了各擋的傳動比，針對變速器的傳動機(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必要的動力性也滿足了其經(jīng)濟(jì)性的指標(biāo)。最后通過對齒輪、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，傳動比
目錄
第一章 概述 ······················································1
第二章 變速器傳動機(jī)構(gòu)布置 ···································· 2
§2.1 傳動機(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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