Wheel for railway vehicle

Patent metadata

Field	Value
Publication number	US-11897281-B2
Application number	US-202017595450-A
Country	US
Kind code	B2
Filing date	May 20, 2020
Priority date	May 29, 2019
Publication date	Feb 13, 2024
Grant date	Feb 13, 2024

Abstract

A wheel includes a boss, a rim, and a web. The rim includes a tread and a flange. The web connects the boss and the rim. When the wheel is viewed in its longitudinal section, the web has a linear plate-thickness center line that is inclined such that the plate-thickness center line approaches the flange side as it extends outward in a radial direction. When the wheel is viewed in its longitudinal section, an outer end of the plate-thickness center line is positioned between the flange and a center of the tread in an axial direction of the wheel.

First claim

The invention claimed is:

1. 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, wherein the rim is positioned so as to be outward from the boss in a track-width direction; and
a web that has an annular shape and connects the boss and the rim, wherein
when the wheel is viewed in a longitudinal section,
the web has a plate-thickness center line having a linear shape and two ends, the plate-thickness center line being inclined such that the plate-thickness center line approaches a flange side as the plate-thickness center line extends outward in the radial direction, and
of the two ends of the plate-thickness center line, an outer end that is positioned more outward in the radial direction is positioned between the flange and a center of the tread in an axial direction of the wheel.

2. The wheel according to claim 1 , wherein a distance in the axial direction from a side face of the rim on the flange side to the outer end of the plate-thickness center line is 0.3 times or more a length of the rim in the axial direction.

3. The wheel according to claim 1 , wherein an angle that the plate-thickness center line forms with the axial direction on the flange side is 87° or less.

4. The wheel according to claim 1 , wherein the web has a plate thickness that decreases as the web extends outward in the radial direction until a point inward from the outer end of the plate-thickness center line and has a minimum plate thickness at the point.

5. The wheel according to claim 2 , wherein an angle that the plate-thickness center line forms with the axial direction on the flange side is 87° or less.

6. The wheel according to claim 2 , wherein the web has a plate thickness that decreases as the web extends outward in the radial direction until a point inward from the outer end of the plate-thickness center line and has a minimum plate thickness at the point.

7. The wheel according to claim 3 , wherein the web has a plate thickness that decreases as the web extends outward in the radial direction until a point inward from the outer end of the plate-thickness center line and has a minimum plate thickness at the point.

Assignees

• Nippon Steel Corp

Inventors

• Kato Takanori
• Yamamura Yoshinari
• Abe Shingo
• Noguchi Jun
• De La Prida Caballero Ruben

Classifications

• B60B17/0006 Primary

  Construction of wheel bodies, e.g. disc wheels (B60B17/0003 takes precedence) · CPC title

• B60B17/0068

  the flange being provided on a single side · CPC title

• B60Y2200/30

  Railway vehicles · CPC title

• B60B17/0065

  Flange details · CPC title

• Y02T10/86

  Optimisation of rolling resistance, e.g. weight reduction · CPC title