喜歡就充值下載吧。。。資源目錄里展示的全都有，，下載后全都有請(qǐng)放心下載，.dwg格式文件為原稿CAD圖紙，可自行編輯修改【QQ：1304139763可咨詢交流】================== 喜歡就充值下載吧。。。資源目錄里展示的全都有，，下載后全都有請(qǐng)放心下載，.dwg格式文件為原稿CAD圖紙，可自行編輯修改【QQ：1304139763可咨詢交流】================== 喜歡就充值下載吧。。。資源目錄里展示的全都有，，下載后全都有請(qǐng)放心下載，.dwg格式文件為原稿CAD圖紙，可自行編輯修改【QQ：1304139763可咨詢交流】==================

北京化工大學(xué)畢業(yè)設(shè)計(jì)（論文） 四輪汽車的轉(zhuǎn)向機(jī)構(gòu)設(shè)計(jì) 摘要：本文剛開(kāi)始介紹了汽車的發(fā)展歷史，以及它發(fā)展的現(xiàn)狀，然后指出本文有要研究的內(nèi)容是汽車的轉(zhuǎn)向機(jī)構(gòu)設(shè)計(jì)。首先要確定轉(zhuǎn)向機(jī)構(gòu)設(shè)計(jì)的方案，同時(shí)通過(guò)不同的轉(zhuǎn)向機(jī)構(gòu)組成部分的組合，設(shè)計(jì)出一種新的汽車轉(zhuǎn)向機(jī)構(gòu)。在轉(zhuǎn)向機(jī)構(gòu)中采用循環(huán)球式轉(zhuǎn)向器使滑動(dòng)摩擦轉(zhuǎn)變?yōu)闈L動(dòng)摩擦，從而具有較高的傳動(dòng)效率，同時(shí)使用壽命還大大增強(qiáng)，但它也有制造困難，機(jī)構(gòu)復(fù)雜等缺點(diǎn)。 本文重點(diǎn)設(shè)計(jì)了循環(huán)球式轉(zhuǎn)向器，并對(duì)轉(zhuǎn)向器零件強(qiáng)度、剛度進(jìn)行了校核，同時(shí)還對(duì)轉(zhuǎn)向系計(jì)算載荷進(jìn)行確定，同樣也對(duì)所設(shè)計(jì)的轉(zhuǎn)向機(jī)構(gòu)進(jìn)行了分析和研究，同時(shí)還提出了轉(zhuǎn)向系容易出的一般故障及解決方法。 關(guān)鍵詞： 轉(zhuǎn)向系；轉(zhuǎn)向機(jī)構(gòu)；循環(huán)球式轉(zhuǎn)向器 The design of automobile steering system Abstract：This paper firstly introduced the development of automobile,then automobile steering system was pointed out the content of this paper.In order to design the automobile steering machine,so many datas should be lookupped.The new automobile steering machine designed in this paper is a combination of all kinds of parts. Because of used the cycle-ball steering gear,the automobile steering machine has very high of efficiency,although it is not easy to manufacture and very precious. The focus of this paper is the design of the cycle-ball steering gear as well as steering gear parts strength and Stiffness calculated cooperation with the standard.Of course the analyse of the automobile steering machine is also introduced in this paper as well as some troubles of automobile steering machine, and the methods to solve these troubles. Keywords: automobile steering machine；cycle-ball steering gear 前言 從第一輛汽車發(fā)明到現(xiàn)在以來(lái)，它已經(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開(kāi)始每小時(shí)18公里的速度到現(xiàn)在從零加速到一百只要三秒多鐘，由此可見(jiàn)汽車的發(fā)展是巨大的。通用、福特、豐田和本田等這些著名的公司現(xiàn)在已經(jīng)成為大家耳熟能詳?shù)拿?。如今汽車的發(fā)展更是日新月異，一個(gè)多世紀(jì)以來(lái)，世界汽車業(yè)已如同一棵樹(shù)木一樣從幼苗長(zhǎng)成了參天大樹(shù)。汽車的各項(xiàng)技術(shù)也像樹(shù)木一樣已從樹(shù)干發(fā)展到枝葉。在安全性方面，自1902年美國(guó)貝克工程師在紐約汽車競(jìng)賽中最早使用汽車安全帶到現(xiàn)在，汽車的主動(dòng)安全裝置包括自動(dòng)防抱死裝置ABS、電子眼、全球定位系統(tǒng)GPS等，被動(dòng)安全裝置包括安全帶、安全氣囊、安全氣簾等。在發(fā)動(dòng)機(jī)方面，從最初的單缸到多缸，從化油器到燃油電子噴射、從往復(fù)式到轉(zhuǎn)子式。隨著科技的進(jìn)步，各種新的技術(shù)還會(huì)源源不斷地應(yīng)用到汽車上，包括最新發(fā)展的油-電混合動(dòng)力技術(shù)和燃料電池技術(shù)。進(jìn)入21世紀(jì)后，轎車主體發(fā)展趨勢(shì)將是系列化、輕量化、小型化、電子化、柴油化。 現(xiàn)在由于環(huán)境的因素，對(duì)汽車的環(huán)保要求也越來(lái)越高，為此近年來(lái)汽車業(yè)界一直在致力于開(kāi)發(fā)油-電混合動(dòng)力車和氫燃料電池車。其中較為領(lǐng)先的有日本豐田和本田、美國(guó)通用及戴-克集團(tuán)等。氫燃料電池被稱為“零污染”電池，由氫和氧發(fā)生反應(yīng)產(chǎn)生能量，副產(chǎn)品只有水。目前，氫的來(lái)源一般是天然氣和沼氣。此外，可以通過(guò)電解水將氫和氧分離而提取氫。而電能則可以通過(guò)煤燃燒或核反應(yīng)堆來(lái)產(chǎn)生。 汽車通常是由發(fā)動(dòng)機(jī)、車身、電氣設(shè)備、底盤(pán)等四部分組成。發(fā)動(dòng)機(jī)是使供入其中的燃料燃燒而發(fā)出動(dòng)力，也就是為汽車提供動(dòng)力。車身是駕駛員工作地場(chǎng)所，也是裝載乘客和貨物地場(chǎng)所。車身應(yīng)為駕駛員提供方便地操作條件，以及為乘客提供舒適安全地環(huán)境或保證貨物完好無(wú)損。電氣設(shè)備由電源組、發(fā)動(dòng)機(jī)起動(dòng)系和點(diǎn)火系、汽車照明和信號(hào)裝置組成。此外，在現(xiàn)代汽車上愈來(lái)愈多地裝用了各種電子設(shè)備：微處理機(jī)、中央計(jì)算機(jī)系統(tǒng)及各種人工智能裝置等，顯著提高了汽車的性能。底盤(pán)它包括傳動(dòng)系，行駛系，轉(zhuǎn)向系，制動(dòng)裝置。 轉(zhuǎn)向系作為汽車底盤(pán)的組成部分之一，由此可以看出那它的作用是顯而易見(jiàn)的，在本文的以下內(nèi)容中將重點(diǎn)介紹汽車轉(zhuǎn)向系的組成，設(shè)計(jì)以及它的分析。圖1為汽車的一個(gè)基本轉(zhuǎn)向機(jī)構(gòu)。 圖1 汽車轉(zhuǎn)向機(jī)構(gòu) 4 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