载货汽车驱动桥设计说明书(定稿)--学士学位毕业论文.doc

学士学位毕业论文 学生姓名： 指导教师： 所在学院： 专 业： 中国·大庆 2013 年 月 Abstract This manual describes the content of the assembly process of analysis and design of low-speed truck drive axle. Drive axle is an important part of the vehicle driving system, its basic function is to increase the drive shaft or transmission came directly from the torque, the torque distribution to the left, right and left, right wheel, to drive the wheels with the car driving kinematics required differential function. So the design quality is directly related to vehicle performance. So in the design process, the designer in the rigorous and serious attitude design. In the part of demonstration program, the drive axle and its assembly structure form selection for specific instructions. This design uses a single-stage reducer, adopts the meshing of spiral bevel gears, it can simplify the structure, reduce the size, effective space utilization, to reduce material waste, to reduce the overall quality. Because it is a light truck, is running in good condition under the road, so there is no use differential lock. In the design calculation and strength check parts, parameters of the main reducer driven important parts of gear, gear, axle and axle housing, made a choice. At the same time also to several parts above the necessary to check the calculation.Finally,I draw. the Engineering drawings according to the selected parameter Keywords：Drive axle;The main reducer;Design;Parameter selection. 目录 摘要 I Abstract II 1 绪论 1 1.1 本课题的研究目的和意义 1 1.2 驱动桥的发展现状 1 1.3 设计内容 2 1.4 设计背景 2 2 总体方案论证 3 2.1 驱动桥概述 3 2.2 方案选择 4 2.3 设计的要求 4 3 主减速器设计 5 3.1 主减速器概述 5 3.2 主减速器结构方案分析 5 3.3 主减速器主、从动锥齿轮的支承方案 8 3.4 主减速器锥齿轮设计 9 3.5 主减速器锥齿轮的材料 13 3.6 主减速器锥齿轮的强度计算 13 3.7 主减速器圆锥滚子轴承的计算 16 3.8 主减速器的润滑 20 4 差速器设计 21 4.1 差速器概述 21 4.2 差速器结构形式选择 21 4.3 对称式锥齿轮差速器的差速原理 22 4.4 对称锥齿轮式差速器齿轮设计 23 4.5 差速器齿轮的材料 26 4.6 对称锥齿轮式差速器齿轮强度计算 26 5 半轴设计 28 5.1 半轴概述 28 5.2 半轴的型式选择 28 5.3 全浮式半轴计算载荷的确定 29 5.4 半轴的结构设计及材料与热处理 31 6 驱动桥壳设计 31 6.1 驱动桥概述 31 6.2 桥壳的结构型式 32