轻型越野汽车CVT变速器(金属带式无级变速器)设计(含CAD图,CATIA三维图)(任务书,开题报告,文献摘要,外文翻译,论文说明书13000字,CAD图纸6张,CATIA三维图)
摘要
金属带式无级变速器是一种传动比能连续变化的自动变速器，它采用金属带和两组带轮来传递动力，带轮的工作半径可以连续变化，从而可以实现传动比的无级变化。汽车无级变速器能使发动机一直工作在理想工况下，从而可以使汽车获得良好的动力性、经济性和行驶平顺性。它是最具有发展前景的自动变速器之一。
论文先介绍了研究背景、无级变速器的国内外发展现状以及设计的意义，然后分析比较了常用自动变速器的结构、性能及优缺点，接着分析了金属带式无级变速器的结构和工作原理，最后设计了轻型越野汽车的无级变速器。设计包括液力变矩器、行星齿轮机构、无级变速机构、中间减速机构、主减速器和差速器等部件的设计。
关键词：自动变速器；无级变速器；工作原理；设计
Abstract
Metal belt continuously variable transmission is an automatic transmission which can change the transmission ratio continuously.It is driven by the metal belt and two groups of belt wheel. The working radius of belt wheel can be changed continuously, so the transmission ratio can be changed continuously. Continuously variable transmission can always make the engine work under the ideal conditions, so it can make the vehicle obtain good acceleration performance,economic performance and ride performance. It is thought to be one of the most develop automatic transmission.
At the beginning, this paper introduced the research backgrounds and the development of continuously variable transmission at home and abroad as well as the significance of the design.Then, the paper analyzed and compared the structure, performance, strengths and weaknesses of several commonautomatic transmissions. Next, the structure andthe working principleof the metal beltcontinuously variable transmission are analyzed. At last, thecontinuously variable transmission of light cross country vehicle is designed.Theparts of the designincludea fluid torque converter, a planetary gearing, avariator,an intermediate reduction drive, a final reduction drive and a differential.
Key Words：Automatic transmission; continuouslyvariable transmission; the working principle; design
目录
摘要 I
Abstract II
第1章 绪论 1
1.1研究背景 1
1.2无级变速器国内外发展与应用现状 1
1.3设计的主要内容及意义 2
第2章常见自动变速器的结构、性能及优缺点 3
2.1几种常见自动变速器介绍 3
2.2各种自动变速器的性能比较 5
第3章金属带式CVT的结构及工作原理 6
3.1 CVT机械部件的结构和工作原理 6
3.2 各挡工作原理 8
第4章液力变矩器的设计 9
4.1液力变矩器的结构 9
4.2循环圆设计 9
4.3锁止离合器设计 10
第5章 CVT的总体设计 13
5.1 CVT传动参数设计 13
5.2校核计算 14
第6章行星齿轮机构的设计 16
6.1行星传动齿轮的设计 16
6.2校核计算 17
第7章中间减速装置、主减速器和差速器的设计 21
7.1中间减速装置的设计 21
7.2主减速器的设计 22
7.3差速器的设计 24
第8章轴的设计 26
8.1轴的结构设计 26
8.2轴的校核计算 26
8.3键的校核计算 29
8.4轴承的校核计算 30
第9章总结 32
参考文献 33
致谢 34
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