| 摘要 |
PURPOSE:To improve the running stability during straight running in a railway running gear having steerable axles by supporting axle boxes for supporting the axles by a supporting structure having a longitudinal supporting rigidity greater than a lateral supporting rigidity. CONSTITUTION:Wheels 1 running on rails are fixed at right and left ends of an axle 2, and the axle 2 is rotatably supported by axle boxes 3. Each of the axle boxes 3 is supported through an elastic member 6 to an axle guard 5 mounted on a truck frame 4. The elastic member 6 has a laminated rubber structure constructed of metal plates 6M and rubber layers 6R alternately laminated wherein the metal plates 6M are arranged on opposite sides of the rubber structure. Each elastic member 6 has a high rigidity against a force applied in a laminated direction of the rubber structure, namely, in an X-X direction but has a low rigidity against a shearing force applied in a Y-Y direction perpendicular to the X-X direction. Each elastic member 6 is arranged in such a manner that the laminated direction is converyed to one point 8 lying on a longitudinal center line of the truck frame 4. |
