轻型货车驱动桥的设计.doc

本科毕业设计（论文） 题 目 轻型货车驱动桥的设计 学 院 汽车工程学院 年 级 2012级 专 业 汽车服务工程 班级 0725121 学号 072512106 姓 名 葛小林 校内导师 吕正兵 职 称 讲师 校外导师 职 称 论文提交日期 2016-05-15 常熟理工学院本科毕业设计(论文论文 Design of light truck drive axle ABSTRACT In the automobile manufacturing industry, the light truck occupies a large proportion,the advantages and disadvantages of the drive bridge is the impact to the vehicle economy, safety and comfort.In order to adapt to the current truck speed, high efficiency demand, the drive bridge must be a simple structure, strong reliability, low cost of the body.A good drive bridge, able to reduce the cost of production of the car, light truck drive axle has a certain practical significance. In the design, first to analyze the driving bridge in various parts of the main principles and structure types, then according to the existing drive bridge of the advantages to be learning design suitable for the needs of the driving bridge structure: using a single-stage main reducer, differential planetary gear, full floating axle and Integral drive axle housing.The traditional method is used to design the main reducer, differential, half axle and drive axle housing, and then the parameters are calculated and checked.Finally, use AutoCAD software to complete the design drawings. Key words: Light truck; Drive axle; Main reducer; Differential mechanism; Half shaft 目 录 1.绪论 1 2.驱动桥的结构分类及设计参数 3 2.1驱动桥的种类 3 2.2驱动桥结构组成 3 3.主减速器的设计 5 3.1减速器的结构形式 5 3.2 主减速器的载荷计算 5 3.2.1主减速比 5 3.2.2齿轮在不同情况下的转矩 5 3.3主减速器齿轮的主要参数 7 3.3.1主减速器参数计算 7 3.3.2主减速器锥齿轮参数表格 8 3.4 主减速器锥齿轮的材料 10 3.5主减速器齿轮的强度校核 11 3.5.1齿轮的耐磨性 11 3.5.2锥轮齿弯曲强度 11 3.5.3锥齿轮的接触强度 12 3.6主减速器齿轮的轴承设计