Vibration Analysis of Hydraulic Switch for High-Speed Railway Turnout System

초록

The second stage of the Gyeongbu High Speed Railway consists of a concrete track, and the turnouts are set up with the F16 and F1.5.5 BWG turnout. In order to change the running direction of train the turnout moves to other route by the hydraulic switch system [1]. This is the first time in Korea to apply concrete track to high-speed railways. In addition, it is in the case of the first application of the concrete trackside BWG turnout and Hydrostar hydraulic switch, it is important to understand the vibration characteristics of the turnout and the switch as a vibration source affecting the trackside and the railway station during the operation of high-speed trains. In particular, the hydraulic track switching system for the second stage of the Gyeongbu High Speed Railway are set up in the center of the track, between rail and rail. During the operation of the high-speed train, the vibration of crossing part of rail may effect on the EPD (End Point Detector) and other parts of hydraulic switching system [2]. In this study, the accelerometers were fixed on the crossing part, EPD and cylinder bearer, to determine vibration characteristics during the KTX operation. In addition to the RMS value in the time domain, the analysis in the frequency domain were performed to determine the transmission of vibrations generated during high-speed train operation to the hydraulic switching system. It is to prepare measures to reduce vibration in the future.