NW行星齿轮减速器振动噪声试验研究

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中图分类号：TH132.425 文献标志码：A doi ： 10.3969/j.issn.1006-0316.2025.11.010

文章编号：1006-0316（2025）11-0066-08

Experimental Study on Vibration and Noise of the NW Planetary Gearbox

ZHEN Dong1²， ZHAO Haowen12，QIN Gang³，SI Zengliang³，LIANG Xiaoxial²，FENG Guojin 1，2 （204 （1.School ofMechanical Engineering，Hebei Universityof Technology，Tianjin 300401， China;

2.Advanced Equipment Research Institute Co.，Ltd.， Hebei University of Technology，

Tianjin 300401，China; 3. Huigong （Hebei） Technology Co.， Ltd.， Julu 055250， China）

Abstract ：This study investigates the underlying causes of noise generation in the NW planetary gear reducer by analyzing its vibration-acoustic signals and validating results through Romax software simulation based on the structural characteristics of the product.By examining vibration and acoustic monitoring test results under diferent transmission error conditions and operating scenarios，the primary factors contributing to excessive vibration and noise of the product are identified.The validityof the signalanalysis is further confirmed through simulation software verification. During the experiments，acceleration sensors and acoustic sensors are used to simultaneously collct vibration signals from the reducer's surface and acoustic signals from its vicinity，and the statistical analysis ofthe test signals reveals the significant impactof transmisson errors on vibrationand noise levels.Furthermore，the time-frequency domain analysis indicates that the sun gear-large planet gear meshing pair is the main source of vibration and noise excitation. Based on these findings，a tooth profile modification is applied to the sun gearto achieve vibration reduction and noise attnuation. Comparative studies on transmission error，load distribution，and noise intensity before and after the modification demonstrates that the proposed profilemodification scheme，derived from vibration-acoustic signal analysis，effectively reduces the noise level. These results provide theoretical guidance for vibration and noise reduction ofNW planetary reducers.

Key words ： vibration-acoustic signal ;NW planetary gearbox ; vibration characteristics ; vibration and noise reduction

电动轮总成是重载矿用自卸车的核心部件，采用NW行星减速器结构（"N"代表内啮合，"W"代表外啮合），通过提升扭矩输出及优化动力传递效率[1]，赋予系统高承载与稳定性以适配严苛工况。（剩余6585字）