Purpose

This study aims to take the compound planetary gear train as an example to investigate how the vibration isolator affects the dynamic characteristics of the gear system.

Methods

The dynamic parameters are obtained from the finite element model of the gearbox case with the vibration isolators by the substructure method. The lumped mass method is used to construct the systematic coupled dynamic model of the compound planetary gear train with the marine twin-layer gearbox case. The dynamic response of the coupled system is calculated by the numerical calculation method of the Fourier series.

Results

The number of vibration isolators negatively affects the bearing forces of the input shaft, output shaft, and planets. The influence of the number of vibration isolators on LSCs is different in the differential stage and the encased stage. When the vibration isolators stiffness is less than 200 N/μm, the stiffness of the vibration isolator has a significant effect on the bearing forces of the input shaft, output shaft, and planets. The increase in the stiffness of the vibration isolator would increase the LSCs of the differential stage and decrease the LSCs of the encased stage.

Conclusions

The number and stiffness of the vibration isolator have influences on the bearing forces and the LSCs. Compared with the LSCs in the differential stage, the LSCs in the encased stage are more sensitive to the number and stiffness of vibration isolators.

中文翻译：

---

隔振器对船用双层变速箱复合行星齿轮系的影响：动载荷分析

目的

本研究旨在以复合行星齿轮系为例，研究隔振器如何影响齿轮系统的动态特性。

方法

通过子结构方法，从带有隔振器的变速箱壳体的有限元模型中获得动力学参数。集总质量法用于构建船用双层齿轮箱复合行星齿轮系的系统耦合动力学模型。耦合系统的动态响应通过傅里叶级数的数值计算方法进行计算。

结果

隔振器的数量会对输入轴，输出轴和行星齿轮的轴承力产生负面影响。振动隔离器数量对LSC的影响在差分阶段和封闭阶段是不同的。当隔振器的刚度小于200 N /μm时，隔振器的刚度会对输入轴，输出轴和行星的轴承力产生重大影响。隔振器的刚度的增加将增加差动级的LSC，并减小封闭级的LSC。

结论

隔振器的数量和刚度会对轴承力和LSC产生影响。与差分阶段的LSC相比，封装阶段的LSC对隔振器的数量和刚度更加敏感。