车辆工程毕业设计185狮跑全轮驱动车分动器与变速器设计

摘要

本设计主要根据现代狮跑2.0L手动四驱SUV汽车的相关技术参数进行分动器和变速器的设计。根据匹配车型的使用条件和车辆参数选择分动器的结构形式，并按照分动器系统的设计步骤和要求，具体进行了分动器轴、齿轮等零部件的相关设计工作和校核工作，在对机械式变速器的发展历史、变速器的地位和作用，以及未来发展趋势进行深入了解的基础上研究了机械式变速器的基本结构和变速原理，对机械式变速器各挡传动路线进行了简要分析，并以此为理论基础，设计了起亚狮跑汽车三轴五档变速器，完成了变速器的布置方案分析、变速器回转件结构参数的确定、同步器设计、各挡齿轮、轴的设计以及强度校核、轴承的使用寿命计算等。

关键词：分动器；设计；变速器；齿轮；同步器

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Abstract

The design is based mainly on the modern lion run manually 2.0L four-wheel-drive SUV vehicle-related parameters at the design of the actuator. In accordance with the conditions of vehicles and vehicle parameters, in accordance with the actuator sub-system design steps and requirements, mainly related to design work, including the sub-center distance of actuators, bevel gear and other parameters. And a sub-axis actuators, gears and other parts of the design and verification of the relevant work. At first, the thesis simply depicted the develop history of mechanical transmission, and it discussed the status and action of mechanical transmission as well as mechanical transmis sion’s current situation and forthcoming development trend. In addition, it studied the mechanical transmission’s basic structure and working principle. The transmission operation of every gear was researched. And mechanical transmission of three axles-five gears in KIA was designed based on above analysis. The layout plan of the mechanical transmission and the parameters of revolving parts were chose. At last, the synchronizer, axles and gears were designed and checked.

Keywords:Sub-actuator; design；transmission; gear; synchronizer

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目录

摘要 .............................................................................................................................................. I Abstract ..................................................................................................................................... II 第1章绪论 .. (1)

1.1 分动器简介 (1)

1.1.1 分动器的构造原理及设计要求 (1)

1.1.2 分动器类型 (2)

1.2 变速器的发展概况 (3)

1.2.1 变速器的设计要求 (3)

第2章主要参数的选择 (4)

2.1 分动器 (4)

2.1.1 档数及传动比 (4)

2.1.2 中心距的确定 (5)

2.1.3 齿轮参数的确定 (5)

2.2 变速器 (8)

2.2.1 传动机构布置方案 (8)

2.2.2 零部件结构方案分析 (10)

2.2.3 档数及各档传动比 (11)

2.2.4 中心距的确定 (11)

2.2.5 齿轮参数的确定 (12)

第3章齿轮的强度计算 (15)

3.1 分动器 (15)

3.1.1 齿轮的失效形式与原因 (15)

3.1.2 齿轮强度的计算与校核 (15)

3.2 变速器 (17)

3.2.1输入轴常啮合齿轮 (17)

3.2.2输出轴齿轮 (18)

3.2.3中间轴齿轮 (19)

第4章轴的初选与强度计算 (22)

4.1 分动器轴的初选与计算 (22)

4.2 键的选择与计算 (23)

4.3 变速器轴的初选与计算 (23)

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4.3.1 轴的尺寸初选 (23)

4.3.2 输出轴的计算 (24)

4.3.3 中间轴的计算 (28)

第5章同步器 (33)

5.1 同步器的结构类型 (33)

5.2 锁环式同步器工作原理 (33)

5.3锁环式同步器的主要结构参数 (36)

第6章轴承的选用与寿命计算 (38)

6.1分动器轴承 (38)

6.2变速器轴承 (38)

6.2.2 输出轴后端轴承 (38)

6.2.2 输入轴后端轴承 (40)

6.2.3 中间轴前端轴承 (41)

6.2.4 中间轴后端轴承 (42)

结论 (44)

参考文献 (45)

致谢 (46)

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