文档介绍：摘要
货车作为一种常用的商用车,已在现代的社会中占有举足轻重的地位。人们的衣食
住行的便利,都有货车运输方面的功劳。社会经济的发展,人们生活水平的提高更需要
货车的运输,货车已成为一个国家乃至整个世界不可缺少的一样运输工具。
变速器是汽车传动系统结构中最重要的部分之一,汽车的前进、后退,增速、减速
都要靠变速器传动来实现。而且变速器在汽车的动力性和燃油经济性上也有很重要的影
响。
本设计主要是齿轮的尺寸计算及校核,轴的尺寸计算和位置的确定,选择设计满足
其承载能力的同步器。另外,针对齿轮作用力的不同,在不同的轴上选择合适的轴承。
利用软件 AUTCAD 完成变速器总成图、第一轴、第二轴、中间轴、各个挡齿轮及同步
器的设计。
随着我国汽车行业的迅猛发展,人们对汽车的需求也越来越高。通过对载货车变速
器的设计,我了解到变速器在汽车结构中具有着重要的作用,因此变速器结构的改进对
汽车行业的发展与进步具有着深远的意义。
关键词:汽车;变速器;齿轮;Autocad
Abstracts
As a monly used mercial vehicles , in modern society occupies a
pivo- tal of the people's convenience,have the credit for social
and economic development , more people need to improve the living standards of the
transport ve- hicle,the vehicle has e an indispensable means of transport in a national
and even the entire world.
The transmission gearbox is one of most important parts in the automobile transmission
system structure,automobile's advance,the backlash,the growth rate,the deceleration must
depend on the transmission gearbox transmission to realize . Moreover the transmission
gearbox also has the very important influence in automobiles power and the fuel oil
efficiency.
This design is mainly gear's putation and the examination , the axis size's
calcul-ation and the position's determination,the choice design satisfies its bearing capacity
the syn- chromesh. Moreover,in view of the gear action's difference, chooses the appropriate
bearing on the different pletes the transmission gearbox unit chart,the first axis,
the second axis,the intermediate shaft using software AUTCAD,to keep off the gear and the
synchromesh design one by one.
Along with our country automobile profession rapid development,the people are also g-
etting higher and higher to automobile's demand,Through to the truck transmission gearbox's
design , I understood the transmission gearbox is having the vital role in the automobile
struct- ure , so the transmission gearbox structure improvem