| 摘要 |
The present invention relates to a railway wheel, wherein a tire unit (11) are fastened to a web plate (10) integrated with a hub with bolts such that the tire unit is coupled to an outer side of the web plate. The web plate is made of a lightweight material, and the tire unit is made of a material with heat resistance and wear resistance. A recess portion is formed on one of the web plate (10) and the tire unit (12) such that the wheel supports lateral force induced by centrifugal force generated when the wheel rolls along a curved rail, a protruding portion arranged on the recess portion is formed on the other, and each of the bolts penetrates through the protruding portion to be horizontally fastened to a side wall of the recess portion, thereby coupling the tire unit to the outside of the web plate. The railway wheel is made up of the web plate made of a lightweight material and the tire unit made of a material with heat resistance and wear resistance, thereby making lightweight the railway wheel. The recess portion is formed on one of the web plate and the tire unit, the protruding portion is formed on the other, and the web plate and the tire unit are coupled to each other by fastening the bolts horizontally so as to increase support stress against lateral pressure induced by centrifugal force generated in the curved section of the track, thereby improving durability and easily replacing the tire unit when the tire unit is worn. |
