1.5吨轻型货车后桥主减速器设计

车辆工程专业毕业论文，论文编号:JX928  论文字数:19192.页数:37

摘     要
 轻型货车的后桥又称为驱动桥，主要由主减速器、差速器、半轴、和驱动桥桥壳等组成。主减速器是汽车传动系中减小转速、增大扭矩的主要部件。主减速器的结构型式和设计参数除对汽车的可靠性与耐久性有重要影响外，对汽车的行驶性能也有直接影响。
 本文主要完成后桥主减速器的设计、参数计算和主要零件强度校核。本文首先主介绍选择本课题的背景意义、研究本课题需解决的主要问题、所能达到的预期目的以及国内外汽车车桥的发展现状。再是介绍了主减速器的型式，主减速器齿轮的类型和主减速器的支承型式及安置方法。接着是对主减速器的参数选择与设计计算，选择基本的参数为下一步的计算做准备，接下来就是是主减速器锥齿轮强度和轴承的载荷计算。最后对主减速器齿轮的材料及热处理做了详细的描述。
 通过对主减速器的认识与了解，对汽车的车桥有了更深的印象，对于将来如何选购汽车，怎样更好的去设计汽车都有了帮助。
关 健 词：主减速器  设计  强度校核
 
Abstract
 The rear axle assembly of LGV also been named drive axle, Mainly by the main reducer, differential and axle, and drive components, such as Shell Bridge.
 Reducer is the main vehicle of transmission in reducing speed and increase torque of the main components. Reducer the main structure of the design parameters and in addition to the car's reliability and durability have an important influence, the car will have a direct impact on performance.
 In this paper on the rear axle the main reducer the design, calculation and the main parameters of strength checking parts. First ，I introduce the choice of the main topics on the background of significance on this issue to be resolved the major issues, to achieve the desired objectives at home and abroad as well as the development of automobile axles. Then, I talked about the main type of reducer, the main reducer the type and the main gear reducer type of support and resettlement method. Then the main reducer parameters and design, the choice of the basic parameters for the next step to prepare for the calculation, the next is the bevel gear reducer is the main strength and bearing the load calculation.
 Through known about the main reducer awareness and understanding ，so that I gained a deeper impression on the axles of the car ，it may be gave me a large help for how to buy cars in the future,and how to optimize the design of the car better .

Key words: Main Reducer   Design   Intensity Examination

目录
中文摘要 I
英文摘要 II
目    录 III
第一章    绪 论 1
1.1选题的背景与意义 1
1.2研究的基本内容与拟解决的主要问题 1
1.2.1研究的主要内容： 1
1.2.2拟解决的主要问题 2
1.3研究方法及预期目的 3
1.3.1研究方法 3
1.3.2预期目的 3
1.4国内外汽车车桥的发展现状及前景 3
第二章 主减速器的结构型式 6
2.1主减速器齿轮的类型 6
 2.2.主减速器的减速型式 7
2.3主减速器的锥齿轮的支承型式及安置方法 11
2.3.1主动锥齿轮的支承型式及安置方法 11
2.3.2从动锥齿轮的支承型式及安置方法 12
2.4主减速器的轴承预紧及齿轮啮合调整 12
第三章 主减速器的参数选择与设计计算 13
3.1主减速比的确定 13
3.2主减速器齿轮计算载荷的确定 14
3.3主减速器锥齿轮主要参数的选择 16
第四章 主减速器锥齿轮强度和轴承载荷的计算 22
4.1主减速器锥齿轮的强度计算 22
4.2轮齿的弯曲强度计算 25
4.2.1锥齿轮齿面上的作用力 25
4.2.2主减速器锥齿轮轴承的载荷计算 27
第五章 主减速器齿轮的材料及热处理 28
第六章 结论 30
附录 30
参考文献： 32
致谢 33

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