| 摘要 |
<p>The invention relates to transport engineering more specifically to wheels for railway vehicles. On the outside surface of the disk of the railway wheel the radii of the first and second outside radii of curvature are from 0.04 to 0.05 of the rim diameter. The radius of the third outside radius of curvature is from 0.08 to 0.1 of the rim diameter. The radius of the fourth outside radius of curvature is from 0.07 to 0.09 of the rim diameter. For the inside surface of the disk the radius of the first inside radius of curvature is from 0.08 to 0.1 of the rim diameter. The radii of the second and third inside radii of curvature are from 0.06 to 0.08 of the rim diameter. The radius of the fourth inside radius of curvature is from 0.04 to 0.06 of the rim diameter wherein a first point is offset from the median plane in a direction away from the flange by a distance of not more than 0.08 of the width of the rim. A centre point is offset from the median plane by a distance in a range of from 0.35 to 0.4 of the width of the rim and a second point is offset from the median plane in a direction towards the flange by a distance of not more than 0.1 of the width of the rim. The ratio of the thickness of the disk at the first point to the thickness of the disk at the second point is from 0.7 to 1.1 and the ratio of the thickness of the disk at the centre point to the thickness of the disk at the second point is from 0.7 to 0.9. The result is the low stress state of the wheel under the effect of different types of working loads a minimal mass and a satisfactory degree of lateral deformation of the rim under thermal stress.</p> |
