| 摘要 |
A bogie bolster (11) of the present invention elastically supported by an air suspension disposed on the upper surface of a bogie frame is formed of a central bogie bolster (20) located centrally in the width direction and end bogie bolsters (21) disposed on both sides thereof. These bogie bolsters (20, 21) are extruded members having an upper surface plate, a lower surface plate, and multiple ribs connecting those together. As a result of an upper surface plate (23a) and a lower surface plate (23b) forming the central bogie bolster (20) being disposed at a level higher than an upper surface plate (21a) and a lower surface plate (21b) forming the end bogie bolsters (21), it becomes possible to form a space in the height direction of a vehicle body between the lower surface of the central bogie bolster (20) and the upper surface of the bogie frame, and dispose a bolster-less bogie below the bogie bolster (11). |
