Anti-vibration design for TBM main drive system based on multi-directional coupling dynamic characteristics analysis
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DOI 10.1007/s12206-020-0703-5
Journal of Mechanical Science and Technology 34 (11) 2020 Original Article DOI 10.1007/s12206-020-0703-5 Keywords: · Dynamics · Field vibration test · Multi-degree of freedom dynamic model · Vibration absorption structure · Vibration characteristics · TBM
Correspondence to: Hanyang Wu [email protected]
Citation: Huo, J., Wu, H., Ji, W. (2020). Antivibration design for TBM main drive system based on multi-directional coupling dynamic characteristics analysis. Journal of Mechanical Science and Technology 34 (11) (2020) 4405~4421. http://doi.org/10.1007/s12206-020-0703-5
Received January 9th, 2020 Revised
April 17th, 2020
Accepted May 18th, 2020
Anti-vibration design for TBM main drive system based on multi-directional coupling dynamic characteristics analysis Junzhou Huo, Hanyang Wu and Wenbo Ji School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China
Abstract
Extreme vibration often occurs on TBM main system during the tunneling process. This paper established the mathematical model for TBM main system considering the impact load, time-varying internal incentive and the complex coupling relationship between each vibration degree of freedom. The dynamic model was modified by the multi-point vibration measured data. The calculation error of the system response of the main support frame’s main vibration direction was within 10 %. And it was found that the overturning vibration and axial vibration of the system were the main forms of vibration of the system. It was determined that the low-frequency vibration of 15-20 Hz was a coupled vibration of system’s first to fourth mode vibration mode. Based on the vibration characteristics of TBM main system, this paper designed a tuned mass vibration absorption structure (TMVAS) that can adapt to the multi degree of freedom (MDOF) coupling vibration of TBM main system during the actual tunneling process. To minimize system vibration, the optimal design parameters of the system was determined. The maximum amplitude of the axial and horizontal overturning vibration of the support frame was reduced by 26.7 % and 13 %, and the maximum amplitude of the cutterhead’s axial vibration was reduced by 23.2 %.
† Recommended by Editor No-cheol Park
1. Introduction
© The Korean Society of Mechanical Engineers and Springer-Verlag GmbH Germany, part of Springer Nature 2020
The hard rock tunneling boring machine (TBM) is a large-scale complex equipment with tunneling, drainage, support and other functions. The TBM main drive system is the core component of the TBM. Its key components include main bearings, drive gear, motors and reducers. At the same time, a large number of hydraulic lines and control components are installed inside the main drive system. In the actual excavation process, the front end of the cutter head will encounter high-hardness rock. Due to the way the cutter breaks the rock, the TBM main drive system will be subjected to strong impact loads, resulting in extremely severe vibration of the mac
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