Damping device, in particular for a railroad vehicle coupling device

Patent metadata

Field	Value
Publication number	US-9421990-B2
Application number	US-201414563855-A
Country	US
Kind code	B2
Filing date	Dec 8, 2014
Priority date	Dec 9, 2013
Publication date	Aug 23, 2016
Grant date	Aug 23, 2016

Abstract

The damping device ( 10 ) according to the invention is designed to damp a shock in a longitudinal direction (X). It includes a central pad ( 12 ), designed to be secured with a first member ( 14 A) of the coupling device ( 14 ), and two side wings ( 18 ), each formed by a thin plate extending in the longitudinal direction (X). Each side wing ( 18 ) includes at least one first longitudinal region ( 20 ), secured to the central pad ( 12 ), at least one second longitudinal region ( 22 ), designed to be secured with a railroad vehicle, and at least one line of least resistance ( 24 ), separating the first ( 20 ) and second ( 22 ) longitudinal regions from each other, extending over the side wing ( 18 ) in the longitudinal direction (X).

First claim

The invention claimed is:

1. A damping device for a railroad vehicle coupling device, designed to damp an impact in a longitudinal direction, including a central pad, designed to be secured with a first member of the coupling device, and two side wings, each formed by a thin plate extending in the longitudinal direction, each side wing including:
at least one first longitudinal region, secured to the central pad, configured to deform in case of impact
at least one second longitudinal region, designed to be secured with a first railroad vehicle,
at least one line of least resistance, separating the first and second longitudinal regions from each other, extending over the side wing in the longitudinal direction, configured to tear in case of impact.

2. The damping device according to claim 1 , wherein:
each side wing includes two second longitudinal regions, i.e., an upper second longitudinal region and a lower second longitudinal region, positioned on either side of the first longitudinal region in a second direction substantially perpendicular to the longitudinal direction,
the upper second longitudinal region is separated from the first longitudinal region by an upper line of least resistance, and the lower second longitudinal region is separated from the first longitudinal region by a lower line of least resistance, the upper and lower lines of least resistance extending parallel to each other, in the longitudinal direction.

3. The damping device according to claim 1 , comprising a metal foil, said metal foil being cut and bent so as to form the central pad and the side wings.

4. The damping device according to claim 1 , wherein each second longitudinal region of the side wings includes a first part, positioned on a first side of the central pad in the longitudinal direction, and a second part, positioned on a second side of the central pad in the longitudinal direction, said first part being designed to be secured to said first railroad vehicle.

5. The damping device according to claim 1 , wherein the central pad includes fastening orifices for fastening said first member to the coupling device.

6. The damping device according to claim 1 , wherein the central pad has a height, in a second direction perpendicular to the longitudinal direction, substantially equal to a height of the first region of each side wing in that same second direction.

7. The damping device according to claim 6 , wherein the side wings extend perpendicular to the central pad, and parallel to each other.

8. The damping device according to claim 7 , wherein the side wings are symmetrical to each other relative to a central plane, parallel to the longitudinal direction and to a second direction perpendicular to the longitudinal direction, said central plane passing through a center of the central pad, said center being defined in a third direction perpendicular to the longitudinal direction and the second direction.

Assignees

• Alstom Transp Tech
• Alstom Transp Tech

Inventors

• Le Corre Dominique

Classifications

• B61G11/16

  absorbing shocks by permanent deformation of buffer element · CPC title

• B61G9/00 Primary

  Draw-gear · CPC title

• F16F7/123

  Deformation involving a bending action, e.g. strap moving through multiple rollers, folding of members (F16F7/125, F16F7/128 take precedence) · CPC title

• F16F7/12

  using plastic deformation of members {(F16F9/30 takes precedence; yieldable means for mounting bumpers on vehicles B60R19/26; yieldable or collapsible steering columns B62D1/192)} · CPC title