Wheel for railway vehicle

A wheel to be used in a railway vehicle, the wheel comprising:

• a boss that forms an inner circumferential portion of the wheel and into which an axle of the railway vehicle is to be inserted;
• a rim that forms an outer circumferential portion of the wheel and includes a tread to come into contact with a top surface of a rail on which the railway vehicle travels and a flange protruding outward from the tread in a radial direction of the wheel;
• and
• a web that has an annular shape and connects the boss and the rim, wherein
• a center of the boss in an axial direction is disposed closer to the flange in the axial direction than a center of the rim in the axial direction, the axial direction being a direction in which a central axis of the wheel extends,
• the web has a plate-thickness center line having a linear shape when the wheel is viewed in a longitudinal section, and
• in a case where an angle that is formed by the plate-thickness center line with the axial direction is taken as a, the angle being defined to be 90° when the plate-thickness center line is parallel to the radial direction, the angle being defined to be less than 90° when the plate-thickness center line is inclined with respect to the radial direction due to rotation of the plate-thickness center line about an inner end in the radial direction from a 90° position toward a side opposite to the flange, and
• in a case where, of both side faces of the rim in the axial direction, a distance in the axial direction from a side face on the side opposite to the flange to an outer end of the plate-thickness center line in the radial direction is taken as Pw, a length of the rim in the axial direction is taken as Wr, and Pw/Wr is taken as L, a following Formula (1) is satisfied.
• L
• ≥
• 0
• .
• 0
• ⁢
• 53
• ⁢
• α
• -
• 3
• .
• 8
• ⁢
• 6
• ⁢
• 2
• ⁢
• 6
• (
• 1
• )
• where the angle α is 90° or less.