考虑滚-滑轴承结构的内啮合齿轮泵动力学建模及振动响应分析

doi:10.3901/JME.260691

摘要/Abstract

摘要： 为研究滚-滑轴承结构对内啮合齿轮泵动力学特性的影响，建立了包含5个集中质量点22个自由度的齿轮泵动力学模型。该模型基于滚动轴承接触力学与滑动轴承流体动压润滑理论，综合考虑了齿轮啮合力、液压力、轴承接触力与滑动轴承油膜承载力等多种因素。首先采用显隐结合法求解了该理论模型的振动响应，并结合泵体表面振动速度的实验测试验证了模型的准确性。在此基础上，系统分析了滚动轴承外圈配合间隙、滑动轴承配合间隙和宽径比等关键结构参数对齿轮泵振动特性的影响规律。结果表明：不同的轴承参数可改变齿轮泵的振动响应，并影响其振动谱能分配。上述研究可为高性能、低振动低噪声齿轮泵的结构设计提供理论依据与工程参考。

关键词: 内啮合齿轮泵, 动力学建模, 滚-滑轴承, 振动响应分析

Abstract: To investigate the influence of rolling-sliding bearing structures on the dynamic characteristics of internal gear pumps, a theoretical dynamic model with 5 concentrated mass points and 22 degrees of freedom is established. The model is developed based on the contact mechanics of rolling bearings and the hydrodynamic lubrication theory of sliding bearings, comprehensively accounting for gear meshing forces, hydraulic forces, bearing contact forces, and oil film supporting forces of sliding bearing. The implicit and explicit integration method is employed to solve the vibration response of the model. The accuracy of the theoretical model is also validated by comparing its results with experimentally measured vibration velocities on the pump body surface. On this basis, the effects of key structural parameters, including the fit clearance of the rolling bearing outer ring, the the fit clearance of the sliding bearing, and the width-to-diameter ratio of the sliding bearing, on the vibration characteristics of the gear pump are systematically analyzed. The results indicate that variations in bearings parameters significantly influence the vibration response of gear pumps and reshape the distribution of their spectral energy. The present findings contribute to establishing a theoretical framework and offer practical guidance for the structural design of high-performance gear pumps characterized by reduced vibration and noise levels.

Key words: internal gear pump, dynamic modeling, rolling-sliding bearings, vibration response analysis

中图分类号:

TH113

叶绍干, 巫昀璟, 张玉强, 鲍岳, 温金蓉, 苗克非, 何俊, 刘会祥, 赵守军. 考虑滚-滑轴承结构的内啮合齿轮泵动力学建模及振动响应分析[J]. 机械工程学报, 2026, 62(13): 120-134.

YE Shaogan, WU Yunjing, ZHANG Yuqiang, BAO Yue, WEN Jinrong, MIAO Kefei, HE Jun, LIU Huixiang, ZHAO Shoujun. Dynamic Modeling and Vibration Response Analysis of an Internal Gear Pump Considering the Rolling-sliding Bearing Structure[J]. Journal of Mechanical Engineering, 2026, 62(13): 120-134.

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链接本文: http://www.cjmenet.com.cn/CN/10.3901/JME.260691

http://www.cjmenet.com.cn/CN/Y2026/V62/I13/120

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