CA1091货车驱桥设计毕业设计.doc

摘 要 本次毕业设计的题目是驱动桥、主减速器、差速器、半轴、桥壳Abstract The graduation project is the subject of a medium goods vehicle driver in the design of the bridge. Bridge drive vehicle drive system is an important component parts, its function is increasing drive shaft or transmission came from the torque, and its transmission to a driving wheel differential function. So medium-sized private car driver has a practical bridge design Significance. In the design of the bridge under the current drive the development of the driver identified the components of the bridge design. According to the design of this model for the medium-sized cars, so the main reducer in the form of a two-stage main reducer, and the current differential is being widely used symmetric bevel gear differential; its axle for the whole floating - Support. In the completion of the design of the main reducer, differential and axle, bearings and the bridge shell calculation and design verification. Through the above calculation and the drive to meet the various functions of the bridge. In addition the design of a more advanced design tools, such as MATLAB calculated using CAXA software programming and graphics. This design has maintained a drive axle have sufficient strength, stiffness and sufficient life, and enough other properties. And in this design-to-common and standardized components. Key words：Drive Bridge, the main reducer, differential and axle, Shell Bridge 目 录 第一章 绪 论 1 1.1 驱动桥简介 1 1.2 驱动桥设计的基本要求 1 第二章 驱动桥主减速器设计 3 2.1主减速器简介 3 2.2主减速器形式的选择 3 2.3主减速器锥齿轮的选择 4 2.4主减速器齿轮的支承 5 2.5主减速器轴承的预紧 6 2.6锥齿轮啮合的调整 6 2.7 润 滑 7 2.8 双曲面锥齿轮的设计 7 2.8.1主减速比的确定 7 2.8.2主减速器齿轮计算载荷的确定 8 2.8.3主减速器齿轮基本参数的选择 9 2.9主减速齿轮的材料及热处理 20 第三章 驱动桥差速器设计 22 3.1差速器简介 22 3.2差速器结构形式的选择 22 3.3差速器齿轮的基本参数选择 24 3.4差速器齿轮的几何尺寸计算与强度校核 26 第四章 车轮传动装置的设计 29 4.1车轮传动装置的功用 29 4.2半轴支承型式 29 4.3全浮式半轴计算载荷的确定 29 4.4半轴的强度计算 29 4.5全浮式半轴杆部直径的初选 30 4.6半轴的结构设计及材料与热处理 30 第五章 驱动桥壳设计 31 5.1驱动桥壳的功用和设计要求 31 5.2驱动桥壳结构方案分析 31 结论 32 参考文献 33 致谢 34 附 录1 35 第一章 绪 论 驱动桥简介 驱动桥是汽车传动系