B60B17/0068

Railway wheel and respective damping element
09533529 · 2017-01-03 · ·

A railway wheel includes a rotation axis and a supporting disk which can be attachable on an axle at the rotation axis. The supporting disk can be coupled with a wheel rim for rolling on a rail. The wheel provides damping means of the rim with respect to the supporting disk which include elastic elements interposed between the disk and the rim, aside with respect to the median plane of the wheel. Each elastic element has its own geometrical axis and includes a first face facing the median plane of the wheel and a second face opposed thereto and facing the opposite part with respect the median plane of the wheel, so that the elastic element extends its thickness between the two faces. The first and second faces of each elastic element have the same concavity or convexity when considered in cross section in any plane containing the geometrical axis.

Wheel for railway vehicle

A wheel includes a boss, a rim, and a web. The rim includes a tread and a flange. A center of the rim in the axial direction of the wheel is disposed closer to the flange in the axial direction than a center of the boss in the axial direction is. The web has a plate-thickness center line that has a linear shape when the wheel is viewed in its longitudinal section. When an angle that the plate-thickness center line forms with the axial direction is denoted by a, a distance in the axial direction from a side face of the rim to an outer end of the plate-thickness center line is denoted by Pw, a length of the rim in the axial direction is denoted by Wr, and Pw/Wr is denoted by L, the wheel satisfies the expression L0.02231.363. Where, the angle is 90 or less.

Tire support rim for track roller associated with a flange
12496849 · 2025-12-16 · ·

A tire support rim for track roller associated with a flange is provided with a circular tire (2), and a support rim (1) for an annular track roller producing a flange. The rim (1) defines a peripheral edge intended to bear a tire, a medial edge in contact with the medial portion of the roller, and two opposite faces producing, on the one hand, an open face and, on the other hand, a bearing face positioned against the surface of the flange of the roller. The rim (1) incorporates a cooling device having at least one circulation duct for air passing through the thickness of the rim from an orifice (51) of the open face such that the duct has a portion at the medial edge and a portion positioned radially on the bearing face between the medial and peripheral edges.

WHEEL
20260054521 · 2026-02-26 ·

A wheel includes a boss, a rim, and a web. When viewed in a longitudinal section of the wheel, the boss includes a contour extending from the web to an end face in the axial direction of the boss. The contour includes curves. A first curve is continuous with the web. The first curve has a first radius of curvature. The second curve is arranged on the end face side in the axial direction of the boss relative to the first curve. The second curve has a second radius of curvature. The second radius of curvature is greater than the first radius of curvature. The path length of the second curve is greater than the path length of the first curve.

Monoblock Wheel with High Thermal Performance for Rail Vehicles
20260042315 · 2026-02-12 ·

A monoblock wheel is shown and described with high thermal performance for rail vehicles, with a radial outer wheel rim, a radial inner wheel hub, which is mounted around a centre axle of the monoblock wheel, and a wheel disc which connects the wheel rim to the wheel hub. The wheel rim has a running surface, a flange, an outer side surface in a first plane and an inner side surface in a second plane, wherein the first plane and the second plane run orthogonally to the central axis, wherein the wheel flange has a reference plane running orthogonally to the central axis in the region of its running surface has a running circle diameter, wherein the reference plane relative to the second plane and the inner side surface of the rim is displaced in parallel to the outside by an axial distance, wherein the distance is preferably 50 mm to 80 mm, wherein the wheel rim, the wheel disc and the wheel hub are designed in one piece as a monoblock wheel, and wherein the wheel disc has a median line, the course of which is defined by several design points.