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ppt.pptx

封皮.docx

文件清單.txt

答辯記錄表.doc

自行車制作過程圖片

自行車運(yùn)動(dòng)仿真.avi

裝配圖.dwg

裝配模型圖.docx

設(shè)計(jì)說明書.docx

說明書打印.pdf

摘  要

 機(jī)動(dòng)車數(shù)量的激增使中國的交通系統(tǒng)面臨巨大壓力，車尾氣的大量排放使得環(huán)境污染日益加劇，整個(gè)社會(huì)面臨著重重矛盾。推廣使用自行車作為代步工具是緩解上述矛盾的一種方法；同時(shí)，經(jīng)濟(jì)的發(fā)展使得城鄉(xiāng)居民對于生活的品質(zhì)有了更高的追求，懂得享受生活，慢慢的選擇健康體魄又能愉悅身心的自行車運(yùn)動(dòng)方式。

在經(jīng)濟(jì)發(fā)展迅速的今天，人類的環(huán)保意識(shí)逐日提高，對改善人類生存環(huán)境的呼聲越來越高，近幾十年來，我國再次為自行車的開發(fā)和發(fā)展投入了大量的人力和財(cái)力。這次我設(shè)計(jì)的是小型四輪山地自行車，主要特點(diǎn)是有良好的平衡和減震作用，我們先采用了UG NX.10畫圖軟件畫出它的個(gè)個(gè)零件從而得到裝配圖，然后做出模型進(jìn)行機(jī)構(gòu)的認(rèn)定。

小型四輪山地自行車開發(fā)的投資力度，商品化步伐需要加快。雖然小型四輪山地自行車還沒有普遍使用，能源和行駛里程的研制方面至今尚未取得突破性的進(jìn)展還未能盡如人意。但是小型四輪山地自行車有美好發(fā)展前景。從技術(shù)發(fā)展的角度來看，在走過了漫長而艱難的發(fā)展歷程之后，小型四輪山地自行車正面臨著重大的技術(shù)突破，有望成為21世紀(jì)的重要游樂方式。

 關(guān)鍵詞：小型；四輪；山地；自行車；機(jī)構(gòu)； 

　   ＡＢＳＴＲＡＣＴ

The surge in the number of motor vehicles, China's transportation system is facing enormous pressure, a large number of vehicle exhaust emissions, environmental pollution is increasing, the whole society is facing many contradictions. Promote the use of bicycles as a means of transport is one way to alleviate the contradictions; at the same time, the economic development makes the urban and rural residents have higher pursuit for quality of life, to enjoy life, good health and can choose slowly pleasurable cycling way.

In today's rapid economic development, people's awareness of environmental protection to improve daily, more to improve the living environment of mankind more and, in recent years, our country once again for the development and development of bicycle and put a lot of manpower and financial resources. This design is a small four wheel bike, the main characteristics of good balance and damping effect, we first use UG NX.10 drawing software to draw all of its parts and assembly drawings, and then make model identification mechanism.

The investment in small-scale four wheel mountain bike development needs to be accelerated. Although the small four wheeled mountain bikes have not yet been widely used, the development of energy and mileage has not yet made breakthrough progress, and has not been satisfactory. However, the small four wheel mountain bike has a bright future. From the point of view of technical development, after the long and difficult development course, the small four wheel mountain bike is facing a major technological breakthrough, and it is expected to become an important mode of recreation in twenty-first Century. 

   keywords ：Small scale；four wheel； mountain area； bicycle；mechanism；

 目  錄

摘  要 I

1 緒論 1

1.1 研究的背景及意義 1

1.2 國內(nèi)外四輪山地自行車研究動(dòng)態(tài)及存在的問題 2

1.2.1國內(nèi)山地自行車研究動(dòng)態(tài)及存在問題 2

1.2.2國外四輪山地自行車研究動(dòng)態(tài)及存在的問題 3

1.3 四輪山地自行車的選擇方案 4

1.3.1方案一 4

1.3.2方案二 5

2 四輪山地自行車的概述及工作原理 6

2.1 自行車的概述 6

2.2 四輪自行車的機(jī)構(gòu)分析，組成部分及工作原理 6

2.2.1對四輪自行車的機(jī)構(gòu)分析及特點(diǎn) 6

2.2.2四輪山地自行車的平衡原理 7

2.2.3四輪自行車的組成部分及工作原理 7

3 四輪山地自行車鏈傳動(dòng)的機(jī)構(gòu)設(shè)計(jì) 9

3.1 鏈傳動(dòng)特點(diǎn)及應(yīng)用 9

3.2 鏈傳動(dòng)參數(shù)的選擇 9

3.3 滾子鏈輪的結(jié)構(gòu)和材料 10

3.4 鏈輪的失效形式 11

3.5 滾子鏈傳動(dòng)的設(shè)計(jì)計(jì)算 11

4 機(jī)構(gòu)的認(rèn)定 13

4.1 材料的購買并準(zhǔn)備過程 13

4.2   模型的完成過程 14

4.3  制作過程中遇到的問題 15

5   自行車的組裝要求及操作方式 17

5.1自行車的安裝注意事項(xiàng) 17

5.2自行車的試驗(yàn)要求 17

6 自行車維護(hù) 18

6.1傳動(dòng)系統(tǒng)的維護(hù) 18

7 總結(jié)與展望 20

參考文獻(xiàn) 21

致謝 22