文档介绍：XXXX大学
毕业设计说明书
学生姓名：学号：
学 院：
专 业：
题 目： 轻型货车变速器的设计
指导教师：职称:
职称:
20**年12月5日
摘要
汽车的历史只有短短的百年，但是在这一百年中，确有着质的不同，从平板 的三轮到现在精美的跑车，从汽轮机到现在的无极变速系统，没一样都是人类的 杰作，是智慧的结晶，集合所有的优点在一起，但是始终有着不可解决的问题， 例如汽车的性能与动力之间，发动机的扭矩，转速与汽车的牵引力，车速要求之 间的矛盾，传动系中设置了变速靠现代汽车的内燃机本身是无法解决的，这就有 待于后人的继续努力，设计出更加完美并且实用的车辆来，所以我们在其中加入 了变速装置，即变速器。本次设计是轻型货车变速器，其中介绍了近几年的变速 器的发展情况，并且简单介绍几种先进的变速器，具体设计中，需要确定的有各 个齿轮的参数，及传动比，并且进行校核，传动轴的确定及校核，具体传动路线， 档位分配，初步确定车的外形，最后选择同步器类型。
关键词：汽车；变速器；同步器；齿轮；轴；强度
Abstract
Automobile history only has the short hundred years, butin this 100 years, really has the archery target to be different, from the plate three turn to the present fine racing bicycle, from the steam turbine to the present the speed change system, does not have equally all is humanity's masterpiece, is the wisdom crystallization, gathers all merits in the same place, but throughout has the question which cannot be solved, for example between the automobile performance and the power, the engine torque, the rotational speed and the automobile force of traction, between the vehicle speed requirement contradiction, center set the speed change to depend on the modern automobile internal combustion engine itself is unable to solve, This waits for to the posterity continues to try hard, designs more perfect and practical vehicles comes, therefore we have joined the variable speed gear in among,
namely transmission gearbox. This design was the pickup truck transmission gearbox, in which briefed in recent years transmission gearbox development situation, and simply introduced several kind of advanced transmission gearboxes, in the specific design, needed to determine have each gear the parameter, and velocity ratio, and carried on the examination, the drive shaft determination and the
examination, the specific transmission path, the files position allocation, initially determined the vehicle the contour, finally selected the synchromesh type.
Key word: Automobile; Transmission gearbox; Synchromesh; Gear;