B60B17/00

RAILWAY WHEEL
20220032681 · 2022-02-03 ·

The chemical composition of the railway wheel of the present embodiment consists of: in mass %, C: 0.80 to 1.60%, Si: 1.00% or less, Mn: 0.10 to 1.25%, P: 0.050% or less, S: 0.030% or less, Al: 0.010 to 0.650%, and N: 0.0030 to 0.0200%, with the balance being Fe and impurities, and wherein, in a microstructure of the web part of the railway wheel, an area fraction of pearlite is 85.0% or more, an area fraction of pro-eutectoid cementite is 0.90 to 15.00%, and an average value of a width W of the pro-eutectoid cementite defined by Formula (1) is less than 0.70 μm:


W=½×(P/2−((P/2).sup.2−4A).sup.1/2)  (1) where, in Formula (1), A is an area (μm.sup.2) of the pro-eutectoid cementite, and P is a circumference length (μm) of the pro-eutectoid cementite.

Device and an axle for rail vehicles
20210323350 · 2021-10-21 ·

A device for rail vehicles comprising a predominantly hollow axle tube extending along a longitudinal direction (LR) and ending in a first wheel flange, and a wheel support extending opposite to the longitudinal direction (LR), comprising a wheel bearing, a second wheel flange and a mandrel as a cone, wherein the second wheel flange, the first wheel flange and a wheel arranged therebetween with a wheel hub are connected to each other via a flange connection, and wherein the mandrel as a cone is inserted from the wheel holder in a positive-locking manner opposite to the longitudinal direction (LR) through the wheel hub of the wheel into the interior of the axle tube and ends at the fastening element, which is arranged and cast into the axle tube and is connected thereto.

Device and an axle for rail vehicles
20210323350 · 2021-10-21 ·

A device for rail vehicles comprising a predominantly hollow axle tube extending along a longitudinal direction (LR) and ending in a first wheel flange, and a wheel support extending opposite to the longitudinal direction (LR), comprising a wheel bearing, a second wheel flange and a mandrel as a cone, wherein the second wheel flange, the first wheel flange and a wheel arranged therebetween with a wheel hub are connected to each other via a flange connection, and wherein the mandrel as a cone is inserted from the wheel holder in a positive-locking manner opposite to the longitudinal direction (LR) through the wheel hub of the wheel into the interior of the axle tube and ends at the fastening element, which is arranged and cast into the axle tube and is connected thereto.

Railway wheel
11110741 · 2021-09-07 · ·

To provide a railway wheel which is excellent in corrosion fatigue resistance. The railway wheel according to the present embodiment has a chemical composition consisting of: in mass %, C: 0.65 to 0.80%, Si: 0.10 to 1.0%, Mn: 0.10 to 1.0%, P: not more than 0.030%, S: not more than 0.030%, Cr: 0.05 to 0.20%, Sn: 0.005 to 0.50%, Al: 0.010 to 0.050%, N: 0.0020 to 0.015%, Cu: 0 to 0.20%, Ni: 0 to 0.20%, Mo: 0 to 0.20%, V: 0 to 0.20%, Nb: 0 to 0.030%, and Ti: 0 to 0.030%, with the balance being Fe and impurities. A plate portion has a matrix structure composed of pearlite.

Railway wheel
11110741 · 2021-09-07 · ·

To provide a railway wheel which is excellent in corrosion fatigue resistance. The railway wheel according to the present embodiment has a chemical composition consisting of: in mass %, C: 0.65 to 0.80%, Si: 0.10 to 1.0%, Mn: 0.10 to 1.0%, P: not more than 0.030%, S: not more than 0.030%, Cr: 0.05 to 0.20%, Sn: 0.005 to 0.50%, Al: 0.010 to 0.050%, N: 0.0020 to 0.015%, Cu: 0 to 0.20%, Ni: 0 to 0.20%, Mo: 0 to 0.20%, V: 0 to 0.20%, Nb: 0 to 0.030%, and Ti: 0 to 0.030%, with the balance being Fe and impurities. A plate portion has a matrix structure composed of pearlite.

RAIL WHEEL SET AND CAR
20210269068 · 2021-09-02 · ·

A rail wheel set for a car which can be moved on a rail of a rail system has a bearing housing with a radial suspension for connecting the rail wheel set to the car, and two running wheels which are rotatably mounted on the bearing housing. Each wheel has a respective rail rolling surface, the shape of which is adapted to the contour of a running surface of the rail, and a respective ground rolling surface. The wheels can roll independently of each other on the running surface of the rail or on the ground. The rail wheel set is secured to a chassis of a car for transporting objects on a rail system.

SYSTEM FOR REPROFILING A WHEEL SET OF A RAILWAY VEHICLE

A system for reprofiling a wheel set of a railway vehicle allows the center of rotation of the wheel set to move relative to supporting rollers. A cutting tool used to reprofile the wheel profile on a wheel set is moved relative to the center of rotation of the wheel set to maintain a constant distance between the center of rotation and the cutter. The rollers are maintained in a fixed position during the cutting process. The system avoids mechanically forcing a constant location of the wheel set relative to the center of rotation.

METHOD FOR CONTROLLING WHEEL DEFORMATION AND ASSOCIATED DEVICE AND SYSTEM
20210179152 · 2021-06-17 ·

A method for controlling the deformation of a wheel includes obtaining, for multiple predefined angular positions on the wheel, a parameter characterizing an angular velocity of the wheel when the wheel is in contact with the running surface at each predefined angular position while the wheel is rolling on a running surface, and calculating a radius value of the wheel for each predefined angular position using the parameter characterizing the angular velocity obtained for that angular position.

METHOD FOR CONTROLLING WHEEL DEFORMATION AND ASSOCIATED DEVICE AND SYSTEM
20210179152 · 2021-06-17 ·

A method for controlling the deformation of a wheel includes obtaining, for multiple predefined angular positions on the wheel, a parameter characterizing an angular velocity of the wheel when the wheel is in contact with the running surface at each predefined angular position while the wheel is rolling on a running surface, and calculating a radius value of the wheel for each predefined angular position using the parameter characterizing the angular velocity obtained for that angular position.

MAINTENANCE SYSTEMS AND METHODS FOR A WHEEL ASSEMBLY OF AN AMUSEMENT RIDE VEHICLE
20210170286 · 2021-06-10 ·

A maintenance assembly for a wheel assembly of an amusement ride vehicle includes a foundational body, a wheel engagement section extending a first distance from the foundational body, and a datum section including a protrusion extending a second distance from the foundational body. The wheel engagement section is configured to contact a wheel surface of the wheel assembly, and the datum section is configured to contact a pad of the wheel assembly. Additionally, the wheel engagement section is rigidly positioned with respect to the datum section, and the second distance is greater than the first distance, such that the maintenance assembly provides a fixed distance between a surface of the datum section configured to contact the pad and a surface of the wheel engagement section configured to contact the wheel surface.