机械5

外转子式直流发电机设计 摘要 时代进步和科技发展的同时，直流电机在生产、制造、运输及日常的生活中所占的比重是越来越重。所以，对直流电机的研究是非常有必要也是非常有意义的。直流电动机在结构上可以分为两类：一是内转子直流电动机；二是外转子直流电动机。外转子直流电动机可以直接驱动电动机，从而省去了机械变速装置，这样提高了驱动效率。因此外转子直流电动机在我国有相当广泛的应用前景。 本次设计的题目是外转子式直流发电机设计，本文是查阅国内外关于直流发电机以及外转子式直流发电机技术资料的基础上展开的设计。在设计的开始阶段对外转子式直流发电机装置的进行确定，内部的主要零部件进行了详细的设计。例如，转动轴的设计、校核及分析；定子、转子、机壳的设计以及对轴承的选用等。最后，根据上面的设计和分析，绘制出外转子式直流发电机装配图及主要零件图，编写了本设计计算说明书。 通过本次设计培养综合分析和解决本专业一般工程技术问题的独立工作能力，拓宽和深化专业知识，为立足社会夯实基矗 关键词：直流电机、外转子式、设计、校核 ABSTRACT Era of progress a
nd tech
nological developme
nt, the share of the DC motor i
n the productio
n, ma
nufacturi
ng, tra
nsportatio
n a
nd daily life gravity is heavier. Therefore, the study of the DC motor is
necessary isvery mea
ni
ngful. DC motor i
n the structure ca
n be divided i
nto two categories: o
ne is a
n i
n
ner rotor DC motor; the seco
nd is exter
nal rotor DC motor. A
n outer rotor DC motor ca
n directly drive the motor, thus elimi
nati
ng the
need for mecha
nical tra
nsmissio
n mea
ns,which i
ncreases the drivi
ng efficie
ncy. Therefore, i
n our exter
nal rotor DC motor has awide ra
nge of applicatio
ns. This topic is desig
ned outer rotor type DC ge
nerator desig
ned o
n the basis of this paper is to review domestic a
nd exter
nal rotor DC ge
nerators a
nd DC ge
nerators of tech
nical i
nformatio
n o
n the expa
nded desig
n. DC's exter
nal rotor ge
nerator u
nit is determi
ned at the begi
n
ni
ng of the desig
n stage, the mai
n compo
ne
nts of the i
nterior detail desig
n. For example, desig
n,verificatio
n a
nd a
nalysis of the rotatio
n shaft; a stator, rotor, beari
ng housi
ng desig
n a
nd the selectio
n of the like. Fi
nally, accordi
ng to the above desig
n a
nd a
nalysis, draw the outer rotor assembly drawi
ng DC ge
nerators a
nd major parts diagram, desig
n calculatio
ns prepared this ma
nual. Through this comprehe
nsive a
nalysis a
nd desig
n culture i
n ge
neral e
ngi
neeri
ng a
nd tech
nology to solve the problem of the professio
nal ability towork i
ndepe
nde
ntly, to broade
n a
nd deepe
n the expertise to lay a solid fou
ndatio
n based o
n the commu
nity. Keywords: motor, outer rotor type, desig
n,verificatio
n 目录 摘要I ABSTRACT II 绪论3 0.1外转子式直流电机的发展历程3 0.2外转子式直流电机的发展现状3 0.3外转子直流电机的特点4 0.4本课题研究的内容及目的5 第1章总体结构的设计6 1.1外转子直流电机的组成6 1.2设计参数的确定7 第2章主要零件的设计和计算8 2.1传动轴的设计和计算8 2.1.1选择轴的材料，确定许用应力8 2.1.2按扭转强度估算轴径8 2.1.3轴的结构设计8 2.1.4轴的受力分析10 2.1.5轴上键槽的设计12 2.2定子铁芯的设计12 2.3电机电枢的设计12 2.4定子的设计13 2.5转子的设计14 第3章结论15 致谢16 参考文献17