Cracking Faults in Grounding Terminals of a Specific Metro Train Model
Journal Title: Urban Mass Transit - Year 2024, Vol 27, Issue 12
Abstract
［Objective］ Frequent cracking faults are observed in the grounding terminals of a specific metro train model during operation. Therefore, it is essential to analyze the grounding terminal cracking causes of the train in the above case. ［Method］ Line tests are conducted on faulty sections. Through collecting vibration acceleration and stress signals from relevant components, the time-frequency characteristics of different signals are studied, and the grounding terminal cracking causes are analyzed. Through analyzing the dynamic stress variations of the grounding terminals with different bracket and cable cross-section combinations, the compatibility of various structural cable brackets is evaluated. Terminal bracket selection schemes of three positions (grounding shaft end, speed shaft end, and anti-slip shaft end) are analyzed. ［Result & Conclusion］ Under identical external loads, the short-arm brackets exhibit lower stress levels. The new grounding terminals demonstrate superior structural design compared to the original grounding terminals, and the fatigue life of the former is higher than that of the latter.
Authors and Affiliations
Wenxue LI, Sheng QU, Xinliang DAI
Keywords
Related Articles
- EP ID EP752759
- DOI 10.16037/j.1007-869x.2024.12.054
- Views 6
- Downloads 0
A Brief Analysis of Karst Survey Mode for Urban Rail Transit Projects in Mountainous City
Objective In the geological survey for Guiyang urban rail transit projects, karst is a common unfavorable geological condition and also the top geological issue to be confronted. However, the current survey mode of karst...
Layout and Assembly Selection Algorithm for Standard Ring+Turning Ring Shield Tunnel Segments
Objective To address the challenges associated with the manual layout and point selection of S+T (standard rings+turning rings (double-sided wedges)) in shield tunnel segments, including high subjectivity, complex calcul...
Active Selection Control Scheme for Dual Pantographs Based on TCMS
[Objective] Pantograph malfunctions can result in the loss of train traction capability, significantly impacting the normal operation of train. To address uneven carbon slide wear of two pantographs on the same vehicle o...
Insight on the Planning and Construction of Shanghai City Railway Network
［Objective］ In recent years, pushed by new urbanization with metropolitan areas and urban clusters as carriers, the planning and construction of Shanghai city railway develop rapidly. In order to better comply with dev...
Integrated Design of Station Electromechanical Equipment Monitoring System Based on Edge Control Logic
Objective The current urban rail transit management mode still predominantly manages lines as subjects, and the efficiency of networked management is not fully utilized. Enhancing the efficiency and effectiveness of urba...