HHT Time-Frequency Energy Spectrum Technique Used in Main Joints Condition Monitoring of QCC Track

According to the quayside container crane (QCC), when the trolley passes by the tracks, the vibration which has features including heavy-load, high-speed and huge-impact happens. The Time-Frequency Energy Spectrum Technique based on Hilbert-Huang Transform (HHT) is put forward in this paper which is used to analyze this vibration. The application to the large-scale cranes belonged to a Shanghai container company shows that this technique can effectively monitor and evaluate the conditions of the QCC tracks and it is a new method for the monitoring and maintenance.