SLS型轿车二轴式四档变速器设计

论文编号:JX1536  论文字数:12042.页数:54  附任务书，开题报告，外文翻译，CAD图，答辩PPT

SLS型轿车二轴式四档变速器设计

 【摘要】 汽车是现代社会的主要运输工具之一。汽车的动力来源于活塞式内燃机，而它的转矩和转速的变化范围非常小，在复杂的使用环境中，就需要汽车的牵引力和汽车的速度在较大的范围内变化。因此，汽车的传动系统中配备了变速器。通过不断改变传动比，使得驱动轮的转矩和车速不断地变化，从而满足了行驶的要求。通过设置倒档，可以实现汽车的前进或后退，而利用空档可以终止动力的传递，既实现档位之间的互换，又可以保护齿轮免受冲击。此次设计为SLS型轿二轴式车四档变速器，它有四个前进档，一个倒档，它的传动比依次为：Ⅰ=2.92；Ⅱ=1.81；Ⅲ=1.12；Ⅳ=0.7；倒档是2.38。该变速器为有级的二轴式齿轮变速器，输入轴上安装四个前进档和一个倒档主动齿轮；输出轴上安装则是四个前进档和一个倒档从动齿轮，倒档轴上安装一个双联齿轮，它可以避免齿轮之间的相互干涉。三个同步器统一安装在输出轴上，通过同步器，可以实现换档、倒档和空挡，满足行驶的要求。
 
 【关键词】变速器；档；传动比；齿轮；轴；同步器

SLS sedan four speed transmission

 [Abstract] Car is one of the main means of transport in modern society. The automobile is one of the main conveyance tools of the modern societies. the automobile power originates from the internal-combustion reciprocating engine, but its torque and the rotational speed range of variation is extremely small, but the complex use environment, needs the automobile the force of traction and the automobile speed in an greater scope change. Therefore， transmission in the car with a transmission. By changing the transmission ratio, making the driving wheel torque and speed are constantly changing to meet the driving requirements. By setting the reverse, the car can go forward or backward, while the gap can be terminated by the transmission of power, realized exchange between the stalls, but also to protect the gears from shock. The design for the SLS sedan fourth gear transmission, which has four forward gears, one reverse, its velocity ratio is in turn: I =2.92; II =1.81; III =1.12; IV =0.7; The reverse gear is 2.38. The transmission is a class of two axis gear transmission, the input shaft to install the four forward gears and one reverse gear; output shaft installation is the four forward gears and one reverse driven gear, reverse gear shaft installation A double-Gear, it avoids interference between the gears. Installed on the three synchronizers unified output shaft, through the synchronizer, can shift, reverse and neutral, to meet the driving requirements.

 [Key word] Transmission gearbox; Files; Velocity ratio; Gear; Axis; Synchromesh

目  录

毕业设计（论文）任务书 Ⅰ
开题报告 Ⅱ
指导教师审查意见 Ⅲ
评阅老师评语 Ⅳ
答辩会议记录 Ⅴ
中文摘要 Ⅵ
外文摘要 Ⅶ
前言 Ⅷ
1 变速器的构造 1
1.1 传动示意图 1
1.2 主要结构说明 2
1.3 变速器主要零件结构的方案分析 2
2 设计参数 5
2.1 传递功率或扭矩 5
2.2 初选传动比 （传动比允差:10%） 5
3 变速器的主要参数 6
3.1 中心距A的初算与确定 6
3.2 变速器的总体轴向尺寸的初算与确定 6
3.3 齿轮参数（压力角，齿数，模数）的初算与确定 6
4 各档齿轮的几何尺寸计算 10
4.1 一档齿轮的几何尺寸计算 10
4.2 其余档斜齿轮的几何尺寸计算 11
4.2 倒档齿轮的几何尺寸计算 14
5 各档齿轮的强度计算 17
5.1 齿轮的损坏原因及形式 17
5.2 齿轮的强度计算与校核 17
6 轴的强度计算 37
6.1 输入轴的强度计算 37
6.2 输出轴的强度计算 40
7 滚动轴承的寿命计算 44
7.1 输入轴轴承寿命计算 44
7.2 输出轴轴承寿命计算 45
8 润滑 47
8.1 变速器内润滑油量 47
8.2 润滑油 47
9结论 48
参考文献 49
致  谢 50
附录 51