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Article

Dynamic Characteristic Analysis and Structural Optimization Design of the Large Mining Headframe

1
Mechanical Electrical Engineering School, Beijing Information Science & Technology University, Beijing 100192, China
2
Key Laboratory of Modern Measurement and Control Technology, Ministry of Education, Beijing Information Science & Technology University, Beijing 100192, China
3
Department of Mechanical Engineering, State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China
4
School of Mechanical Electronic & Information Engineering, China University of Mining & Technology-Beijing, Beijing 100083, China
*
Author to whom correspondence should be addressed.
Machines 2022, 10(7), 510; https://doi.org/10.3390/machines10070510
Submission received: 6 June 2022 / Revised: 19 June 2022 / Accepted: 22 June 2022 / Published: 24 June 2022
(This article belongs to the Special Issue Dynamic Analysis of Multibody Mechanical Systems)

Abstract

A large headframe is the core structure of a mine hoisting system. In the traditional design, only the static analysis under load is considered, resulting in the resonance phenomenon of the large headframe in later applications. In order to restrain the resonance phenomenon, a novel method for dynamic characteristic analysis and structural optimization design of a large headframe is proposed. First, the eigenfrequencies and vibration modes of the large headframe were obtained through modal analysis. The results showed that the numerical values of the multi-order eigenfrequencies of the system are relatively close. When subjected to alternating loads of similar frequencies, a large headframe is prone to the resonance phenomenon. Second, the steady-state vibration response of the large headframe was obtained through harmonic response analysis. The results showed that when the frequency of the alternating load is close to the first-order eigenfrequency, the vibration amplitude increases. Meanwhile, the fourth-order and the fifth-order eigenfrequencies are very close. When subjected to alternating loads of similar frequencies, the fourth-order and the fifth-order vibration modes of the headframe will be excited simultaneously. At this time, the headframe will have a strong resonance, which may cause structural damage and other problems. Finally, based on the above analysis, nine different structural optimization schemes are proposed in this paper. Through modal analysis and harmonic response analysis, the nine schemes were compared and analyzed, and the optimal scheme was eventually determined as scheme 9. The method proposed in this paper provides a new concept for the structural optimization design of a large mining headframe, and it has great significance for restraining the resonance phenomenon and ensuring the safety of mining operations.
Keywords: the large mining headframe; resonance phenomenon; modal analysis; harmonic response analysis the large mining headframe; resonance phenomenon; modal analysis; harmonic response analysis

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MDPI and ACS Style

Liu, Y.; Huang, M.; An, Q.; Bai, L.; Shang, D. Dynamic Characteristic Analysis and Structural Optimization Design of the Large Mining Headframe. Machines 2022, 10, 510. https://doi.org/10.3390/machines10070510

AMA Style

Liu Y, Huang M, An Q, Bai L, Shang D. Dynamic Characteristic Analysis and Structural Optimization Design of the Large Mining Headframe. Machines. 2022; 10(7):510. https://doi.org/10.3390/machines10070510

Chicago/Turabian Style

Liu, Yue, Min Huang, Qi An, Long Bai, and Deyong Shang. 2022. "Dynamic Characteristic Analysis and Structural Optimization Design of the Large Mining Headframe" Machines 10, no. 7: 510. https://doi.org/10.3390/machines10070510

APA Style

Liu, Y., Huang, M., An, Q., Bai, L., & Shang, D. (2022). Dynamic Characteristic Analysis and Structural Optimization Design of the Large Mining Headframe. Machines, 10(7), 510. https://doi.org/10.3390/machines10070510

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