五菱宏光手动变速器设计说明

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五菱宏光手动变速器设计

系部名称： 机械与车辆工程

专业班级： 汽服11403 学生： 海瑞 指导教师： 广义 职 称： 副教授

大学 二○一五年六月

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前言

如果说发动机是车辆的心脏，那么我认为变速器就是车辆的动脉。给予车辆动力与速度。控制车辆的前进与后退。

变速器能够按其要求改变从发动机传过来的转矩和速度，使工作的驱动轮能正常行驶，变速器的主要目的是能使停驶的汽车平稳地起步，运动的汽车能更好的爬坡，转弯，加速，减速等，使汽车在不同的工作环境中获得不同的最佳牵引力和速度，变速器一定还要设有空挡和倒挡。

本设计过程得到了老师的一些我们院里的老师和同学的帮助，在此对他们表示十分的感。

最后，殷切的希望广大的老师和同学对此次设计中误漏和错误之处，予以批评改正。

大学汽服11403 海瑞

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Foreword

If the engine is the heart of the vehicle, so I think that is the artery of the vehicle's transmission. Giving the vehicle power and speed. Forward and reverse control of the vehicle.

Transmission can change according to their requirements from the engine torque and speed to pass over, so that the work can be normal driving wheels, the main purpose is to make the suspended transmission car smooth start, sporty car better climbing, cornering, acceleration, deceleration, so that cars get a different optimal traction and speed in different working environments, while the engine has a good range of working conditions. Transmission has to be neutral and reverse.

The design process has been helped Su l teacher some of our teachers and students courtyard in the center to express my gratitude to them. Finally, the ardent hope that the majority of teachers and students of the leak at the design mistake and wrong, criticize the correction.

Changchun University of steam clothes 11403

Sun Hairui

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目 录

摘要 ........................................................................ I ABSTRACT .................................................................. II 第1章 绪论 ............................................................... 1

1.1选题的背景 ........................................................ 1 1.2目的及意义 ........................................................ 1

第2章 总体方案设计 ..................................................... 3

2.1汽车参数的选择 ....................................................... 3 2.2变速器设计应满足的基本要求 ........................................... 3 2.3传动机构布置方案分析 ................................................. 3

2.3.1固定轴式变速器 ................................................. 3 2.3.2倒档布置方案 ................................................... 4 2.4齿轮形式 ............................................................. 7 2.5换挡机构形式 ......................................................... 7 2.6变速器轴承 ........................................................... 8 2.7本章小结 ............................................................. 9

第3章 变速器设计和计算 ................................................ 10

3.1档数 ................................................................ 11 3.2传动比围 ............................................................ 11 3.3各档传动比的确定 .................................................... 11

3.3.1主减速器传动比的确定 ........................................... 11 3.3.2最低档传动比的确定 ............................................. 12 3.3.3各档传动比的确定 ............................................... 13 3.3.4中心距的选定 ................................................... 13

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