| 摘要 |
PURPOSE: A side frame for a railway vehicle is provided to cut down extrusion cost by reducing the number of parts with equalizing the shape and size of extrusion members, and to improve the rigidity and the strength by preventing damage of the base metal with forming the zigzag connecting portion. CONSTITUTION: A side frame(1) is formed by connecting plural extrusion members(11,12,13,14,15) made of aluminum and by welding connecting portions of the extrusion members. The size and the shape of the aluminum extrusion member are equal to the size and the shape of the other extrusion member. The curved surface having the same curvature is formed in the extrusion member, and assembling pieces(161,161') are zigzagged in the connecting portion to minimize defect in welding. Expenses are reduced by decreasing the number of parts with forming the same size and shape of the extrusion members, and the rigidity and the appearance of the side frame are improved by preventing damage of the base metal with zigzagging the connecting portion. |
