文档介绍：1 摘要变速器用来改变发动机传到驱动轮上的转矩和转速, 目的是在原地起步, 爬坡, 转弯, 加速等各种行驶工况下, 使汽车获得不同的牵引力和速度, 同时使发动机在最有利工况范围内工作。变速器设有空挡和倒挡。需要时变速器还有动力输出功能。因为变速箱在低档工作时作用有较大的力, 所以一般变速箱的低档都布置靠近轴的后支承处, 然后按照从低档到高档顺序布置各档位齿轮。这样做既能使轴有足够大的刚性, 又能保证装配容易。变速箱整体结构刚性与轴和壳体的结构有关系。一般通过控制轴的长度即控制档数, 来保证变速箱有足够的刚性。本文设计研究了三轴式五挡手动变速器,对变速器的工作原理做了阐述,变速器的各挡齿轮和轴做了详细的设计计算, 并进行了强度校核,对一些标准件进行了选型。变速器的传动方案设计。简单讲述了变速器中各部件材料的选择。关键字:挡数;传动比;齿数;轴 2 Abstract Transmi ssi on to change the engine reached on the drivi ng wheel torque and speed, is ai med at marking st art , cli mbing, turni ng, accelerat e vari ous drivi ng condit i ons, the car was di fferent tract ion and speed Meanwhi le engine in the most favorabl e working condi t ions wit hi n the scope of the work. And the trans mi ssi on in neutral gear wit h reverse gear. Transmi ssi on al so need power out put functi on. Gearbox because of the low-grade work ata larger role, In general , the low-grade gearbox layout are cl ose to the axis after support , Fol lowi ng from low-grade to hi gh-grade order of the layout of st al l s gear. Thi s wi l l not onl y all ow axis are large enough for a rigi d, but al so ensures easy assembl y. Gear box overal l st ruct ure and rigi d axle and the shel l st ruct ure of rel at ions. General l y through the control shaft lengt h control over several st al ls to ensure that adequat e gear box rigi d. Thi s paper descri bes the design of three-axi s fi ve bl ock manual trans mi ssion, the transmissi on principl e of work el aborat ed, Transmi ssi on of the gear shaft and doa detail ed design, and the int ensi ty ofa school . F or some st andard part s for the select ion. Transmi ssion Trans mi ssion program desi gn. A brief descri pti on of the trans mi ssi on of al ponent s of the material choice. Keywords : bl ock; Transmi ssi on rati o; Teeth; Axis 3 目录第1章绪论……………………………………………………….. 1 第2章总体方案设计……………………………………………….. 3 ………………………………………………... 3 ………………………………….. 3 第3章变速器传动机构布置方案………………………………...…. 4 ……………………………………….… 4 3