越野车驱动桥后桥主要部件的设计

摘要

汽车驱动桥一般由主减速器、差速器、半轴以及桥壳四部分组成，其基本功用是增大由传动轴或直接由变速器传来的转矩，将转矩分配给左、右驱动轮，并使左、右驱动车轮具有汽车行驶运动学所要求的差速功能；此外，还要承受作用于路面和车架或车厢之间的铅垂力、纵向力和横向力。

本文介绍了越野车驱动桥后桥主要部件的设计方法以及设计过程。论述了驱动桥后桥的总体结构，分析了驱动桥后桥各部分结构型式及布置方式，确定了总体设计方案以及驱动桥后桥的基本尺寸数据。本文越野车驱动桥后桥采用整体式驱动桥，螺旋锥齿轮的单级减速器，普通对称式圆锥行星齿轮差速器，全浮式半轴及整体式桥壳。同时进行了越野车驱动桥后桥相应的参数计算、几何尺寸计算、强度校核及材料的选取等工作。最后使用AutoCAD 进行平面制图。

关键词驱动桥；设计；越野车；材料；减速器

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Abstract

General from the main drive axle reducer, differential, axle and axle housing composed of four parts, and its basic use is increased by the transmission shaft, or directly from the transmission from the torque, the torque distribution to the left and right-hand drive cars round, and left and right wheel drive car with a kinematic differential required functions. In addition, the role also have to face or on the road and inside the frame between the vertical force, vertical force and horizontal force.

This paper introduces the sport utility vehicle rear drive axle of the main components of design methods and design process. After the drive axle on the bridge's overall structure, an analysis of the rear axle drive axle parts and layout structure, identifying a design program and rear drive axle of the basic size of the data. In this paper, cross-country drive axle vehicles using integrated rear axle drive axle, spiral bevel gear reducer of single-stage, general symmetric cone planetary gear differential, full floating axle and axle housing the overall style. At the same time, calculate a sport utility vehicle rear drive axle of the corresponding parameters, geometric dimensions, the intensity calibration and the selection of materials and so on. Finally, using the AutoCAD soft ware for mapping plane.

Keywords Drive Axle; Design; SUV; Material; Reducer

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目录

摘要........................................................... I Abstract ........................................................ II 目录......................................................... III 第1章绪论 (1)

1.1 课题的背景 (1)

1.2 课题的意义 (2)

1.3 国内外研究现状 (2)

第2章驱动桥简介与设计方案确定 (4)

2.1 概述 (4)

2.1.1 驱动桥总成概述 (4)

2.1.2 驱动桥设计的要求 (4)

2.2 驱动桥设计方案的确定 (4)

2.2.1 主减速器结构方案的确定 (4)

2.2.2 差速器结构方案的确定 (5)

2.2.3 半轴形式的确定 (6)

2.2.4 桥壳型式的确定 (6)

2.3 本章小结 (7)

第3章主减速器设计 (8)

3.1 主减速比的计算 (8)

3.2 主减速齿轮计算载荷的确定 (9)

3.3 主减速器齿轮参数的选择 (10)

3.3.1 齿数的选择 (10)

3.3.2 节圆直径地选择 (10)

3.3.3 齿轮端面模数的选择 (12)

3.3.4 齿面宽的选择 (12)

3.3.5 螺旋锥齿轮螺旋方向 (12)

3.3.6 螺旋角的选择 (12)

3.4 主减速器螺旋锥齿轮的几何尺寸计算与强度计算 (12)

3.4.1 主减速器螺旋锥齿轮的几何尺寸计算 (12)

3.4.2 主减速器螺旋锥齿轮的强度计算 (12)

3.5 主减速器齿轮的材料及热处理 (17)

3.6 主减速器轴承的计算 (17)

3.6.1 作用在主减速器主动齿轮上的力 (18)

3.6.2 主减速器轴承载荷的计算 (19)

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