发布时间 : 星期六 文章汽车主减速器设计更新完毕开始阅读5233f104852458fb760b5634
沈阳工学院
用应力[??1b]?90MPa，则：
d?3MA=50.01mm
0.1[??1b]由于截面处轴的直径为186mm，最小处的直径也大于50.01mm，所以校核成功。
5.3本章小结
通过本章对轴的校核，轴满足其要求，对它所受的弯矩计算有更深的认识，对自
己的计算水平有一定的提高，对将来对轴的设计和校核积累了宝贵的经验。
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沈阳工学院
结 论
通过所设计的载货汽车的参数，对它的主减速器进行设计，通过对主传动比的计算，知道所要设计主减速器的传动比比较大。为了满足主减速器具有较大的主传动比，并能使汽车的离地间隙增大，选择设计成双级的主减速器。通过载货汽车的参数，合理分配一、二级啮合齿轮的传动比。通过经验公式对各个齿轮进行设计，并用强度公式进行校核，使其它满足强度要求。通过对双级主减速器设计，得到一个能满足要求，并能平稳安全的工作。
在此设计中有如下总结：
1. 如何合理的分配好传动比，对车辆的离地间隙有直接的影响，解决的方法主要是通过经验和参考现有车型分配好传动比；
2. 通过对齿轮的设计，合理的选择材料，并尽量减小质量。对汽车的各方面的性能有一定是好处；
3. 在对齿轮和轴的设计完成后，对轴承的选择要保证它的强度，并同时满足零件的装配；
4. 尽量使所设计的机构简单，容易加工和维修。
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参考文献
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附 录
Truck Main Reduction Gear
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