Study on Loosening Load Law and Performance of Double Nut of Transmission Tower

DOI

10.2991/978-94-6463-449-5_7How to use a DOI?

Keywords

power transmission tower; double nut; transverse vibration; numerical simulation

Abstract

Based on the bolt connection characteristics of transmission tower, this paper studies the loosening mechanism and causes of double nuts of transmission lines. The finite element simulation analysis of bolt connection is carried out by using ABAQUS software. The influence of initial pretightening force and transverse vibration amplitude on the axial pretightening force of bolt joints and the slip of thread meshing surface is studied. Reducing the initial pretightening force and increasing the transverse vibration amplitude will accelerate the attenuation of axial pretightening force and increase the slip of thread meshing surface. Taking the common nut as the research object, the lateral vibration test of the fastener was completed, and the change trend curve of the axial pretightening force of the bolt was obtained. The anti-loosening performance of equal-thickness double nuts was better than that of other nuts. Aiming at the anti-loosening defects of the existing double nuts, the design of the integrated self-locking double nut is proposed and the lateral vibration test is carried out. The anti-loosening performance index of the integrated self-locking double nut is significantly improved, and the anti-loosening stability is greatly enhanced.

Copyright

© 2024 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial 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 license and indicate if changes were made.

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TY  - CONF
AU  - Fengkai Ge
AU  - Qinghua Li
AU  - Maohua Li
AU  - Xinquan Wang
PY  - 2024
DA  - 2024/06/30
TI  - Study on Loosening Load Law and Performance of Double Nut of Transmission Tower
BT  - Proceedings of the 2024 8th International Conference on Civil Architecture and Structural Engineering (ICCASE 2024)
PB  - Atlantis Press
SP  - 67
EP  - 79
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-449-5_7
DO  - 10.2991/978-94-6463-449-5_7
ID  - Ge2024
ER  -