| Title |
A Study on the Characteristics of Brackets and Vibration Absorbers of Overhead Rigid Conductor System for High-speed System up to 250km/h |
| Authors |
Jun-Sik Choi ; Nak-Kyung Kim ; Hye-Min Park |
| DOI |
http://dx.doi.org/10.5207/JIEIE.2018.32.7.020 |
| Keywords |
Vibration fatigue test ; Rigidity test ; Structurak analysis ; Bracket ; Vibration Absorber |
| Abstract |
The GTX(Great Train Express) construction project currently underway is being pursued as a national R & D project by the Ministry of Land, Transport and Maritime Affairs. In this study, the development of the 250km/h class of rigid Conductor system has resulted in the reduction of the tunnel cross - sectional area compared to the conventional catenary type, which reduces the cost of the tunnel construction. However, The strong pantograph abilities and the vibration and tipping points of the trains that appear when the train is accelerating in the board must be solved absolutely by adjusting the buffer so that the train can speed up and reduce the arc. In order to improve this, we developed a bracket and developed a shock absorber by FEM structure analysis of bracket material and shape so as to adjust vibration and diameter. The developed product was subjected to tests other than fatigue (dynamic) test and rigidity test, and passed the certification test by satisfying the international standard value of pantotap contact test from the test bed (train line) to the train acceleration test. In the future, our technology has been secured for GTX(Great Train Express / metropolitan area express railway) line system. |