摘 要
汽车后桥是汽车的主要部件之一，其基本的功用是增大由传动轴或直接由变
速器传来的转矩，再将转矩分配给左右驱动车轮，并使左右驱动车轮具有汽车行驶运动所要求的差速功能:同时，驱动桥还要承受作用于路面和车架或承载车身之间的铅垂力、纵向力，横向力及其力矩。其质量，性能的好坏直接影响整车的安全性，经济性、舒适性、可靠性。
本设计根据给定的参数，按照传统设计方法并参考同类型车确定汽车总体参数，确定主减速器、差速器、半轴和桥壳的结构类型，进行参数设计并对主减速器主、从动齿轮、半轴齿轮和行星齿轮进行强度以及寿命的校核。驱动桥设计过程中基本保证结构合理，符合实际应用，总成及零部件的设计能尽量满足零件的标准化、部件的通用化和产品的系列化及汽车变型的要求，修理、保养方便，机件工艺性好，制造容易。
汽车桥壳关键词：低速载货汽车 驱动桥 主减速器 差速器
THE DESIGNING OF BUSINESS AUTOMOBILE REAR DRIVE AXLES
ABSTRACT
Drive axle is one of the most important parts of automobile. The function is to increase the torque from drive shaft or from transmission directly, and then distribute it to left and right wheels which have the differential ability automobile needed when driving. And the drive axle has to support the vertical force, longitudinal force, horizontal force and their moments between road and frame or body. Its quality and performance will affect the security, economic, comfortability and reliability.
According to the design parameters given, determine the overall vehicle parametres in accordance with the traditional design methods and reference the same vehicle parameters, identify the main reducer, differential, axle and axle housing structure type, design the parameters of the main gear,the driven gear of the final drive, axle gears and spi
ral bevel gear and check the strength and life of them. In design process of the drive axle,we should ensure a reasonable structure, practical applications, the design of assembly and parts as much as possible meeting requirements of the standardization of parts, components and products’ univertiality and the serialization and change , convenience of repair and maintenance, good mechanical technology, being easy to manufacture.
KEY WORDS: light truck; drive axle; single reduction final drive
目 录
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