A wheel block, preferably for an overhead traveling crane, wherein the wheel block comprises a housing and a wheel mounted in the housing and protruding out of the housing. In order to allow for proactive maintenance of the wheel with a simple checking process and simultaneously reliable loading and, in particular, overloading detection and identification, according to the invention, the wheel block has a contactless operating measuring device for determining the distance between the measuring device and the wheel, in order to detect and/or identify and/or predict any current and/or future wear on the wheel and/or a loading, in particular an unloaded state and/or an overloaded state, of the wheel block based on measurement signals or measurement data from the measuring device and an evaluation thereof.

A wheel block, preferably for an overhead traveling crane, wherein the wheel block comprises a housing and a wheel mounted in the housing and protruding out of the housing. In order to allow for proactive maintenance of the wheel with a simple checking process and simultaneously reliable loading and, in particular, overloading detection and identification, according to the invention, the wheel block has a contactless operating measuring device for determining the distance between the measuring device and the wheel, in order to detect and/or identify and/or predict any current and/or future wear on the wheel and/or a loading, in particular an unloaded state and/or an overloaded state, of the wheel block based on measurement signals or measurement data from the measuring device and an evaluation thereof.

A wheel includes a boss, a rim, and a web. The rim includes a tread and a flange. A center of the boss in an axial direction of the wheel is disposed closer to the flange than a center of the rim in the axial direction. The web has a plate-thickness center line having a linear shape when the wheel is viewed in a longitudinal section. In a case where an angle formed by the plate-thickness center line with the axial direction is taken as , a distance in the axial direction from a side face of the rim to an outer end of the plate-thickness center line is taken as Pw, a length of the rim in the axial direction is taken as Wr, and Pw/Wr is taken as L, the wheel satisfies L0.0533.8626, where the angle is 90 or less.

The railway axle according to this disclosure has a pair of fitting portions and which each include a fitting portion hardened layer and a base metal portion, and a center parallel portion which includes a center parallel portion hardened layer and the base metal portion. The base metal portion has the chemical composition described in the description. In a region having the Vickers hardness of 480 HV or more in the center parallel portion hardened layer, a dislocation density obtained based on a CoK characteristic X-ray diffraction result is 2.510.sup.16 m.sup.2 or less, a half-value width B of the (211) diffraction plane is 1.34 degrees or less, and the dislocation density and the half-value width B of the (211) plane obtained by X-ray diffraction satisfy Formula (1).
(4.810.sup.16B+8.510.sup.16)/1.00(1)

A rail wheel assembly is disclosed herein that is configured to operate on rail networks with multiple railway track gauges. In various embodiments, the dual gauge rail wheel assembly may comprise an axle extension component that is affixed to an axle of a railway vehicle and configured to receive a sliding wheel. The axle extension component may comprise sets of holes or slots located at different positions and corresponding to different railway track gauges. The sliding wheel may be configured to slide axially on the axle extension component between the different sets of holes or slots on the axle extension component. When holes or slots on the sliding wheel and the axle extension component are aligned, locking pins or a locking key may be inserted into the aligned holes or slots to secure the sliding wheel in a position corresponding with a particular railway track gauge.

A rail wheel assembly is disclosed herein that is configured to operate on rail networks with multiple railway track gauges. In various embodiments, the dual gauge rail wheel assembly may comprise an axle extension component that is affixed to an axle of a railway vehicle and configured to receive a sliding wheel. The axle extension component may comprise sets of holes or slots located at different positions and corresponding to different railway track gauges. The sliding wheel may be configured to slide axially on the axle extension component between the different sets of holes or slots on the axle extension component. When holes or slots on the sliding wheel and the axle extension component are aligned, locking pins or a locking key may be inserted into the aligned holes or slots to secure the sliding wheel in a position corresponding with a particular railway track gauge.

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.

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.

A multi-part rail wheel having a wheel tire is presented and described, having a wheel body which consists of a light alloy material and has a hub opening in which a contact surface is provided, on which an outer ring of a roller bearing is supported during use or which is connected to the outer surface of a shaft or a shaft stub during use, and having at least one resilient body which is arranged between the wheel tire and the wheel body and via which the wheel tire is resiliently supported on the wheel body. In order to achieve a good corrosion resistance, a high resistance to mechanical influence and to avoid electrical damage in the wheel bearing, it is proposed that at least the contact surface in the hub opening of the wheel body be covered with an electrically insulating oxide layer (OX) generated by electrochemical anodizing. A wheel set for a rail vehicle, having such rail wheels, is also presented and described.

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.