高速动车齿轮箱内部激励及箱体柔性对其振动的影响

于宏达; 刘加蕙; 黄志辉; 田明洁

doi:10.13890/j.issn.1000-128X.2024.01.140

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高速动车齿轮箱内部激励及箱体柔性对其振动的影响

铁道机车车辆 | 更新时间：2024-08-01

- 高速动车齿轮箱内部激励及箱体柔性对其振动的影响
- Influence of internal excitation and boxbody flexibility on the vibration of high-speed train gearboxes
- 机车电传动 2024年第3期页码：45-52
- 作者机构：
  
  西南交通大学轨道交通运载系统全国重点实验室，四川成都 610031
- 作者简介：
  
  黄志辉，男，工学博士，研究员，硕士生导师，主要从事车辆系统动力学、结构强度分析、机械产品结构设计方面的研究；E-mail: hzh_95@163.com
- 基金信息：
  
  国家自然科学基金项目(U19A20109)
- DOI：10.13890/j.issn.1000-128X.2024.01.140
  中图分类号： U292.91⁺4;U264.4
- 纸质出版日期：2024-05-10，
  
  收稿日期：2023-08-21，
  
  修回日期：2023-12-12，
- 稿件说明：
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于宏达, 刘加蕙, 黄志辉, 等. 高速动车齿轮箱内部激励及箱体柔性对其振动的影响[J]. 机车电传动, 2024(3): 45-52.

YU Hongda, LIU Jiahui, HUANG Zhihui, et al. Influence of internal exand boxbody flexibility on the vibration of high-speed train gearboxes[J]. Electric drive for locomotives,2024(3): 45-52.
于宏达, 刘加蕙, 黄志辉, 等. 高速动车齿轮箱内部激励及箱体柔性对其振动的影响[J]. 机车电传动, 2024(3): 45-52. DOI：10.13890/j.issn.1000-128X.2024.01.140.

YU Hongda, LIU Jiahui, HUANG Zhihui, et al. Influence of internal exand boxbody flexibility on the vibration of high-speed train gearboxes[J]. Electric drive for locomotives,2024(3): 45-52. DOI：10.13890/j.issn.1000-128X.2024.01.140.

摘要

动车运行过程中齿轮箱受载情况十分复杂，箱体出现裂纹的情况时有发生。为保证齿轮箱箱体服役安全，文章在SIMPACK中建立了含有齿轮传动系统的某动车动力学模型，动车运行速度设为200 km/h、250 km/h、300 km/h和350 km/h，对比4种速度下只考虑轨道激励与考虑齿轮内部和轨道双激励时齿轮箱刚性箱体的振动响应，同时建立考虑齿轮箱箱体柔性的某动车刚柔耦合动力学模型，分析其对齿轮箱箱体振动计算结果的影响。结果表明：齿轮箱内部激励对箱体横向振动加速度影响不大，但在主动齿转频与齿轮啮合频率处箱体垂向振动加速度会产生峰值，使其方均根值显著增加，平均增量为4.8 m/s

。在200 km/h时主动齿转频与齿轮箱箱体点头模态频率相近引发共振，使得箱体垂向振动加速度方均根值增量异常显著，因此在分析齿轮箱箱体振动时齿轮箱内部激励不可忽略；齿轮箱箱体柔性对考虑齿轮箱内部激励时的箱体横向振动加速度影响不大，但会使垂向振动加速度方均根值有所减小，在速度达到300 km/h后减小量较大，平均减小量为2.72 m/s

。

Abstract

During the operation of high-speed trains

the loads on the gearbox are very complex

and cracks often occur in the boxbody. To ensure the service safety of the gearbox body

a dynamic model of high-speed trains with a gear transmission system was established based on SIMPACK. Comparative analysis of the vibration response of the gearbox rigid body at speeds of 200 km/h

250 km/h

300 km/h and 350 km/h was conducted

considering only track excitation and both gears internal excitation and track excitation. In addition

a rigid-flexible coupling dynamic model of a high-speed train considering a flexible gearbox body was established to analyze its impact on the vibration calculation results of the gearbox body. The results indicate that the

internal excitation of the gearbox has a little impact on the lateral vibration acceleration of the gearbox body

but at the rotational frequency of the driving gear and the engagement frequency of the gears

the vertical vibration acceleration of the gearbox body will exhibit a peak value

which significantly increases its root mean square value

with an average increment of 4.8 m/s

. At a speed of 200 km/h

the resonance is caused by the similarity between the rotational frequency of the driving gear and the modal frequency of the gearbox pitching

resulting in a very significant increase in the root mean square value of the vertical vibration acceleration of the gearbox body. Therefore

when analyzing the vibration of the gearbox body

the internal excitation of the gearbox cannot be ignored. The flexibility of the gearbox body has a little impact on the lateral vibration acceleration of the gearbox body when considering the internal excitation

but it will reduce the root mean square value of the vertical vibration acceleration to some extent. The average reduction after the speed reaches 300 km/h is large

reaching 2.72 m/s

关键词

高速动车组齿轮传动系统齿轮箱振动响应共振

Keywords

high-speed traingear transmission systemgearboxvibration responseresonance

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