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本科毕业论文
9t货车驱动桥设计与计算
学院名称: 汽车与交通工程
专业班级: 车辆工程 1004
学生姓名:
指导教师姓名:
指导教师职称: 教授
2014 年 5 月
9t货车驱动桥设计与计算
专业班级:车辆1004 学生姓名:
指导教师: 职称:教授
摘要随着时代的发展,汽车的作用越来越大,已成了我们生活不可缺少的工具。驱动桥作为汽车四大总成之一,它的性能的好坏直接影响整车性能,而对于载重汽车显得尤为重要。汽车驱动桥一般由主减速器、差速器、传动装置和驱动桥壳组成,汽车的动力性、燃油经济性、驾驶平顺性和操作稳定性都和汽车驱动桥的选择有着非常重要的关系。
本文参照传统驱动桥的设计方法进行了对9t货车驱动桥的设计。首先我们确定了主要部件的结构型式和主要设计参数;然后参考类似驱动桥的结构,确定出总体布置形式和设计方案;最后依次对主,从动锥齿轮,支承轴承,差速器行星齿轮,半轴齿轮,全浮式半轴和整体式桥壳进行了设计计算,其中也包括了对锥齿轮弯曲和接触强度的校核、轴的强度校核以及轴承的寿命条件校核。
本方案设计简单,操作方便,可靠性强。选用单级主减速器驱动桥, 使得整个后桥的结构简单,制造工艺简单,从而大大的降低了制造成本。并且,双曲面齿轮的单级主减速器提高了后桥的传动效率,提高了传动的可行性,从而能达到任务书的要求。
关键词: 驱动桥主减速器差速器半轴桥壳
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The design and calculation of 9 tons truck driving axle
Abstract With the development of the times,the effects of automobile is growing, it has e an indispensable tool in our axle is the one of automobile four important performance directly influence on the entire automobile,especially for the heavy truck . Truck driving axle generally consists of the main reducer,differential, transmission and drive axle car's power,fuel economy,fort and operation stability have a very important relationship with the selection of truck driving axle.
The design method of this article for the design of 9 tons truck driving axle is referred to the traditional driving axle . First, we determine the structure of ponents and the main design parameters;Then we determine the overall layout forms and the design scheme referenced
to the similar driving axle structure; At last , we turn on to design and calculate the the driving and driven bevel gear , the block bearing ,the differential ary gear , axle shaft gear fully floating axle and axle housing, including the bending and contact strength check of the bevel gear the strength check of shaft and the life condition check of bearing.
The scheme has the advantages of simple design, convenient operation and strong reliability . We select the singl