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Analysis of influencing factors on vibration characteristics of electro-hydraulic vibration cutting system

The cutting process of the cantilever tunneling machine mainly generates excitation through the cutting motor or the hydraulic cylinder driven by the hydraulic system. Regardless of the driving method, the frequency width of the excitation system is limited, difficult to control, and the excitation...

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Autores principales: Xie, Miao, Meng, Qingshuang, Zhang, Wenzhuo, Wang, He, Guo, Jianfeng, Liu, Yuan, Yan, Wenxing, Li, Bo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10593835/
https://www.ncbi.nlm.nih.gov/pubmed/37872246
http://dx.doi.org/10.1038/s41598-023-45329-3
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author Xie, Miao
Meng, Qingshuang
Zhang, Wenzhuo
Wang, He
Guo, Jianfeng
Liu, Yuan
Yan, Wenxing
Li, Bo
author_facet Xie, Miao
Meng, Qingshuang
Zhang, Wenzhuo
Wang, He
Guo, Jianfeng
Liu, Yuan
Yan, Wenxing
Li, Bo
author_sort Xie, Miao
collection PubMed
description The cutting process of the cantilever tunneling machine mainly generates excitation through the cutting motor or the hydraulic cylinder driven by the hydraulic system. Regardless of the driving method, the frequency width of the excitation system is limited, difficult to control, and the excitation effect is poor. Therefore, in order to improve excavation efficiency, the excitation system parallel to the original cutting and rotating system is designed. Based on the excitation characteristics caused by alternating fluid flow, the core component of the excitation system, hydraulic exciter, is designed, and the dynamics and dynamic characteristics of the excitation system are analyzed. Based on AMESim software, analyze the impact of factors such as pump displacement, excitation frequency, and pipeline parameters on the operational performance of the electro-hydraulic vibration cutting system, and conduct experimental verification by building a cutting test bench. The experimental results show that as the inner diameter of the pipeline increases, the fluctuation at the acceleration turning point decreases in each cycle and approaches the peak faster. As the excitation frequency increases, the cutting acceleration of the electro-hydraulic excitation cutting system decreases first and then increases, verifying the accuracy of the simulation results. In the experiment, it was found that the acceleration transformation range of the cutting head of the excitation system is the smallest and most stable when the excitation frequency is 30 Hz. In order to verify that the excitation frequency of 30 Hz is the optimal frequency, further contact force tests were conducted on the cutting teeth. It was found that when the hydraulic excitation system adds a 30 Hz excitation frequency, the contact force on the cutting teeth is the smallest. It is more conducive to reducing the damage and wear of the cutting head, and the cutting effect of the cutting head is more obvious. The research results are beneficial for improving the cutting performance of the electro-hydraulic excitation cutting system, providing theoretical support for the selection of cutting parameters for excavation machinery and hydraulic excitation, and improving the existing theoretical system for active excitation cutting vibration analysis of excavation machines.
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spelling pubmed-105938352023-10-25 Analysis of influencing factors on vibration characteristics of electro-hydraulic vibration cutting system Xie, Miao Meng, Qingshuang Zhang, Wenzhuo Wang, He Guo, Jianfeng Liu, Yuan Yan, Wenxing Li, Bo Sci Rep Article The cutting process of the cantilever tunneling machine mainly generates excitation through the cutting motor or the hydraulic cylinder driven by the hydraulic system. Regardless of the driving method, the frequency width of the excitation system is limited, difficult to control, and the excitation effect is poor. Therefore, in order to improve excavation efficiency, the excitation system parallel to the original cutting and rotating system is designed. Based on the excitation characteristics caused by alternating fluid flow, the core component of the excitation system, hydraulic exciter, is designed, and the dynamics and dynamic characteristics of the excitation system are analyzed. Based on AMESim software, analyze the impact of factors such as pump displacement, excitation frequency, and pipeline parameters on the operational performance of the electro-hydraulic vibration cutting system, and conduct experimental verification by building a cutting test bench. The experimental results show that as the inner diameter of the pipeline increases, the fluctuation at the acceleration turning point decreases in each cycle and approaches the peak faster. As the excitation frequency increases, the cutting acceleration of the electro-hydraulic excitation cutting system decreases first and then increases, verifying the accuracy of the simulation results. In the experiment, it was found that the acceleration transformation range of the cutting head of the excitation system is the smallest and most stable when the excitation frequency is 30 Hz. In order to verify that the excitation frequency of 30 Hz is the optimal frequency, further contact force tests were conducted on the cutting teeth. It was found that when the hydraulic excitation system adds a 30 Hz excitation frequency, the contact force on the cutting teeth is the smallest. It is more conducive to reducing the damage and wear of the cutting head, and the cutting effect of the cutting head is more obvious. The research results are beneficial for improving the cutting performance of the electro-hydraulic excitation cutting system, providing theoretical support for the selection of cutting parameters for excavation machinery and hydraulic excitation, and improving the existing theoretical system for active excitation cutting vibration analysis of excavation machines. Nature Publishing Group UK 2023-10-23 /pmc/articles/PMC10593835/ /pubmed/37872246 http://dx.doi.org/10.1038/s41598-023-45329-3 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Xie, Miao
Meng, Qingshuang
Zhang, Wenzhuo
Wang, He
Guo, Jianfeng
Liu, Yuan
Yan, Wenxing
Li, Bo
Analysis of influencing factors on vibration characteristics of electro-hydraulic vibration cutting system
title Analysis of influencing factors on vibration characteristics of electro-hydraulic vibration cutting system
title_full Analysis of influencing factors on vibration characteristics of electro-hydraulic vibration cutting system
title_fullStr Analysis of influencing factors on vibration characteristics of electro-hydraulic vibration cutting system
title_full_unstemmed Analysis of influencing factors on vibration characteristics of electro-hydraulic vibration cutting system
title_short Analysis of influencing factors on vibration characteristics of electro-hydraulic vibration cutting system
title_sort analysis of influencing factors on vibration characteristics of electro-hydraulic vibration cutting system
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10593835/
https://www.ncbi.nlm.nih.gov/pubmed/37872246
http://dx.doi.org/10.1038/s41598-023-45329-3
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