摘要环境问题和石油能源的紧缺让电动车又一次成为热点，全世界再一次开始了新一轮的电动汽车的研究与开发，欧洲、美国、日本等汽车行业领军国家目前都投入大量精力来进行这方面的研究。驱动车桥的位置是整个汽车传动的末尾，驱动桥是由主减速器，再加上差速装置和壳体还应该再加上一些传动装置，它需要承担汽车的汽车的降速増扭等作用。当使用大型电动机输出足够大的转矩以满足客车的载重和效率的上需要时，得给它配合一个可靠的驱动桥。本次车桥的设计借鉴同种类型汽车的总体结构相关参数，从而完成车桥中主减速器、差速器、桥壳和半轴的类型选定与设计并对它们进行强度以及寿命的校核。设计驱动桥的过程中，要注意所设计结构的合理性与实际的使用情况相联系。零部件应该尽量满足通用性与产品系列性。并且要求设计的产品要保养方便，修理容易，机件工艺性好，容易制造。77718

毕业论文关键字：电动客车，车桥，主减速器，差速器

毕业设计说明书外文摘要

Title   The design of electric passenger car axle   

Abstract As the oil crisis ,the world's industrial began to know the importance of electric cars。 electric car’s research ,development and manufacture once again become the popular research 。In recent years, due to the increasingly serious phenomenon of energy shortage and environmental pollution, the world has caused a new round of the electric car research and development boom, Europe, the United States, Japan and other world famous large automobile manufacturers invest a lot of resources to research for developing and manufacturing a new generation of electric cars。 Drive axle bridge is at the end of the car drive, it is consists of the main reducer, differential device and some transmission device, it need to take the car slow down and add the twisting。When using large motor output torque in order to meet the needs of the overloaded bus rapidly and efficiently that must match a high efficient and reliable drive axle, this design according to the given parameters, the traditional design method and reference the same type car, to determine the main reducer, differential and half shaft, and the structure of bridge types。 Finally, carries on the parameter design and give these components strength and life check。 Drive axle basic guarantee reasonable structure in design process。 satisfied with the actual application, the assembly and parts can satisfy the standardization。 It also need the convenience of repair and maintenance, good mechanical technology and being easy to manufacture。

Keywords： Electric passenger cars, axle, the main reducer, differential 

目   次

1  绪论 1

1。1研究目的以及意义 1

1。2国内外研究现状及发展趋势 1

1。3本课题内容 2

2 总体方案布置 3

2。1非断开式驱动桥 3

2。2断开式驱动桥 3

2。3驱动桥总成结构形式选择 4

3 主减速器设计 5

3。1主减速器的结构型式 5

3。2主减速器的参数选择与设计计算 7

4  差速器设计 20

4。1差速器的结构形式 20

4。2对称式圆锥行星齿轮差速器设计