급곡선 주행 산악트램의 거동 특성 및 설계에 관한 연구

초록

A mountain tram is an eco-friendly public transportation system that runs on steep and sharp mountain roads regardless of geographic and climatic conditions. It provides transportation for residents and comport mobility for tourists. In this study, the characteristic behaviors of the cars in a mountain tram on a sharp curve with 10m radius were analyzed using a theoretical method. The method's accuracy was verified with numerical results by CAD. It was also confirmed by a 1/20-scale model test. Based on this confirmation, the performance of a tram that had 3 cars and 3 bogies was reviewed, and problems with the initial design were found so that the alternatives could be presented. It was concluded that the tram passes through the sharp curve smoothly, but relative angular displacements occurred between carbodies and between a carbody and bogie. The displacements between carbodies could be absorbed by the couper's rotation, but those between the carbody and bogie generated excessive expansion of the shaft connecting the traction motor on the carbody and the reduction gear on the bogie. This caused safety issues. To solve these problems, the initial design was changed to a tram with 3 cars and 2 bogies. After the change, the displacements did not occur, and the problems were fixed.

키워드