Dynamic Analysis of Vertical Magnetic Suspension System Rotor Dropping to Protective Bearing with Different Structural Parameters

IF 1.9 4区 工程技术 Q2 Engineering
Dingkang Zhu, Xiaoxu Pang, Dongfeng Wang, Ming Qiu, Duo Liu, Yanfang Dong, Bobo Xu
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Abstract

Aiming at the problem that the rotor of vertical magnetic suspension system falls to the protective bearing with different structural parameters and causes its failure, in this paper, the dynamic model of the inner structure of the protective bearing, the mathematical model of axial and radial collision between the rotor, the inner ring of the protective bearing are established. The author changed the two structural parameters of protective bearing with and without cage and the ball filling number, and the impact characteristics of WNCPB (with no cage protective bearing) and WCPB (with cage protective bearing) on the rotor were compared and analyzed. Finally, the protective bearing performance testing machine of the magnetic bearing system was built to simulate and calculate the impact force of the outer ring, and the indirect measurement experiment of the axial and radial impact force of the protective bearing with different structural parameters was carried out. The empirical results show that: the impact resistance of WCPB improved with the ball filling number increasing from 26 to 28. The number of WNCPB filled balls should be slightly less than the number of full balls to obtain optimal impact resistance. With the ball filling number increasing from 26 to 28 and then to 30, WNCPB with the ball filling number 28 has the best impact resistance. Compared to WNCPB, the overall performance of WCPB is improved.

Abstract Image

不同结构参数下垂直磁悬浮系统转子跌落至保护轴承的动态分析
针对垂直磁悬浮系统转子落在不同结构参数的保护轴承上导致其失效的问题,本文建立了保护轴承内部结构的动力学模型、转子与保护轴承内圈轴向和径向碰撞的数学模型。作者改变了有保持架保护轴承和无保持架保护轴承的两个结构参数以及钢球填充数,对比分析了 WNCPB(无保持架保护轴承)和 WCPB(有保持架保护轴承)对转子的冲击特性。最后,建立了磁悬浮轴承系统的保护轴承性能试验机,模拟计算了外圈的冲击力,并对不同结构参数的保护轴承的轴向和径向冲击力进行了间接测量实验。实证结果表明:随着填充球数从 26 个增加到 28 个,WCPB 的抗冲击性能得到改善。要获得最佳抗冲击性能,WNCPB 填充球的数量应略低于完整球的数量。随着填充球数从 26 增加到 28,再增加到 30,填充球数为 28 的 WNCPB 具有最佳抗冲击性。与 WNCPB 相比,WCPB 的整体性能有所提高。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
4.10
自引率
10.50%
发文量
115
审稿时长
3-6 weeks
期刊介绍: The International Journal of Precision Engineering and Manufacturing accepts original contributions on all aspects of precision engineering and manufacturing. The journal specific focus areas include, but are not limited to: - Precision Machining Processes - Manufacturing Systems - Robotics and Automation - Machine Tools - Design and Materials - Biomechanical Engineering - Nano/Micro Technology - Rapid Prototyping and Manufacturing - Measurements and Control Surveys and reviews will also be planned in consultation with the Editorial Board.
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