摘要 本文旨在介绍汽车齿轮减速器的结构，并完成设计。通过已有针对于汽车减速器的知识，不难发现其传动比一般较小，再检索不同的传动结构，最终确定基本类型。因此，本文主要介绍引进一些传动机的结构设计、计算等工作，当然也包括行星齿轮架。以输入功率，输入转速等参数为依据，分析并确定下来本次设计的整体结构。最终通过设计出大致的整体结构后，对于一些关键的部件进行一些科学合理的强度试验。最终得到的结果同其他设计的结构相比。本文在行文过程中主要分为以下三个方面：首先，本次设计使用浮动机构，以便均匀分配三个行星齿轮的负载，也就是说高速轴是通过齿形联轴器与太阳轮进行的连接；其次，齿轮箱的内圈齿轮和和箱体的分离是通过螺栓和圆锥销实现的；最后，在完成了整个设计的基础上，在文末对整个设计做出回顾与展望。 关键词：行星齿轮;传动机构;齿轮减速器;强度试验 Desig
n of 25 kW pla
netary gear reducer Abstract I
n this paper, the structure desig
n of the first stage pla
netary gear reducer is completed. The reducer has a small tra
nsmissio
n ratio, a
nd the
n compares various tra
nsmissio
n structures to determi
ne the basic types of tra
nsmissio
n. The mai
n part of the paper is the desig
n a
nd calculatio
n of the mai
n compo
ne
nts of the tra
nsmissio
n mecha
nism, i
ncludi
ng the su
n gear, pla
netary gear, i
n
ner gear ri
ng a
nd pla
netary carrier. After the ge
neral structure of the gear reducer is determi
ned by the give
n i
nput power, tra
nsmissio
n ratio, i
nput speed a
nd worki
ng co
nditio
n coefficie
nt, the desig
n a
nd calculatio
n of the overall structure a
nd the stre
ngth check calculatio
n of the mai
n compo
ne
nts are carried out. The desig
n of the reducer has three characteristics compared with the structural desig
n of other reducers: first, i
n order to eve
nly distribute the load of the three pla
netary wheels, the tooth type floati
ng mecha
nism is adopted, that is, the su
n wheel a
nd the high-speed shaft are co
n
nected together by the tooth type coupli
ng, so as to realize the floati
ng of the su
n wheel; seco
nd, the gearbox body adopts the fla
nge type box, the upper a
nd lower boxes The i
n
ner ri
ng gear a
nd the box body are separated a
nd fixed together with the upper a
nd lower boxes by bolts a
nd taper pi
ns. Fi
nally, the whole desig
n process is summarized, a
nd the overall structure desig
n of the reducer is basically completed. Key words: pla
netary gear;drivi
ng macha
nism; structural desig
n; checki
ng calculatio 目录 摘要I Abstract II 1绪论1 1文献综述1 1.1行星齿轮减速器国外研究进展2 1.2.1国内行星齿轮减速器的发展3 1.2.2国内行星减速器存在的问题4 2行星齿轮减速器的背景及开展研究的意义4 2.1行星齿轮减速器的研究背景4 2.2行星齿轮减速器开展研究的意义5 3行星齿轮减速器研究方法及研究内容与目的6 3.1行星齿轮减速器研究的方法6 3.2行星齿轮减速器研究的内容7 3.3行星齿轮减速器研究的目的7 4传动方案的确定7 4.1确定行星传动的类型7 4.2电机的选择8 4.3 W机构的选择8 4.4零件材料和热处理的选择9 5配齿计算9 5.1确定各齿轮的齿数9 5.2初算中心距和模数10 5.3几何尺寸计算13 5.4装配条件验算14 5.4.1邻接条件14 5.4.2同心条件14 5.4.3安装条件15 5.5齿轮强度校核16 5.5.1 a-c传动强度校核16 5.5.2 c-b传动强度校核22 6轴的设计计算28 6.1行星轴设计28 6.2转轴的设计31 6.2.1输入轴设计31 6.2.2输出轴设计32 7行星架和箱体的设计34 7.1行星架的设计34 7.1.1行星架结构方案34 7.1.2各个行星齿轮的轴孔的孔距的相对偏差35 7.1.3转臂x的偏心误差35 7.1.4各个行星轮轴孔的平行度公差35 7.1.5平衡性要求36 7.1.6浮动构件的轴向间隙36 7.2箱体的设计37 7.3密封和润滑37 7.4材料和热处理要求38 7.4.1齿轮材料和热处理要求38 7.4.2选择齿轮材料的原则38 7.4.3其他零件的材料和热处理要求39 参考文献41 致谢43