Railcar adapter for connecting a railcar body to a bearing

Patent metadata

Field	Value
Publication number	US-10384695-B2
Application number	US-201615341488-A
Country	US
Kind code	B2
Filing date	Nov 2, 2016
Priority date	Nov 13, 2015
Publication date	Aug 20, 2019
Grant date	Aug 20, 2019

Abstract

Railcar adapter, for connecting a railcar body to a bearing, having a bearing seat side secured to the bearing and a frame seat side mounted in a bogie frame of the railcar body is provided. The railcar adapter includes a top cover in contact with the railcar body, forming the frame seat side, a bearing seat adapted to be mounted on the bearing, forming the bearing seat side and at least one damping element located between the top cover and the bearing seat.

First claim

The invention claimed is:

1. A railcar adapter, for connecting a railcar body to a bearing, comprising:
a bearing seat side configured to be secured to the bearing,
a frame seat side configured to be secured to a bogie frame of the railcar body,
a top cover configured to contact the railcar body and forming the frame seat side,
a bearing seat configured to be mounted on the bearing and forming the bearing seat side, and
at least one damping element located between the top cover and the bearing seat,
wherein, the bearing seat has an inner surface configured to radially contact the bearing and a flat outer surface having a central cutting, the at least one damping element and the top cover extending into the cutting, and
wherein the central cutting is delimited by two parallel first lateral surfaces perpendicular to a first axis of symmetry of the adapter, two opposed first rounded surfaces connecting the first lateral surfaces, and a bottom in radial contact with the at least one damping element, and wherein
the at least one damping element is delimited by two parallel second lateral surfaces perpendicular to the first axis of symmetry of the adapter, two opposed second rounded surfaces connecting the second lateral surfaces, a substantially flat inner surface in radial contact with the bearing seat and a substantially flat outer surface, each second lateral surface being provided with first cuttings and each second rounded portions being provided with second cuttings.

2. The railcar adapter according to claim 1 , wherein a portion of an upper surface of the top cover configured to form a contact surface between the top cover and the railcar body is spheroidal.

3. The railcar adapter according to claim 1 , wherein the top cover and the bearing seat are made in rigid material.

4. The railcar adapter according to claim 1 , wherein the at least one damping element is made of a soft material.

5. The railcar adapter according to claim 1 , further comprising a connection pin electrically connecting the top cover and the bearing seat.

6. The railcar adapter according to claim 5 , wherein the connection pin is overmolded in the at least one damping element.

7. The railcar adapted according to claim 1 , wherein the at least one damping element comprises an elastomeric pad.

8. A railcar adapter, for connecting a railcar body to a bearing, comprising:
a bearing seat side configured to be secured to the bearing,
a frame seat side configured to be secured to a bogie frame of the railcar body,
a top cover configured to contact the railcar body and forming the frame seat side,
a bearing seat configured to be mounted on the bearing and forming the bearing seat side, and
at least one damping element located between the top cover and the bearing seat,
wherein the bearing seat has an inner surface configured to radially contact the bearing and a flat outer surface having a central cutting, the at least one damping element and the top cover extending into the cutting, and
wherein the bearing seat comprises two lateral channels each axially delimited by a pair of opposed lugs and a lateral surface perpendicular to the opposed lugs and parallel to a first axis of symmetry of the bearing seat, each lateral channel being adapted to cooperate with the railcar body.

9. The railcar adapter according to claim 8 , wherein
the central cutting is delimited by two parallel first lateral surfaces perpendicular to a first axis of symmetry of the adapter, two opposed first rounded surfaces connecting the first lateral surfaces, and a bottom in radial contact with the at least one damping element, and wherein
the at least one damping element is delimited by two parallel second lateral surfaces perpendicular to the first axis of symmetry of the adapter, two opposed second rounded surfaces connecting the second lateral surfaces, a substantially flat inner surface in radial contact with the bearing seat and a substantially flat outer surface, each second lateral surface being provided with first cuttings and each second rounded portions being provided with second cuttings.

10. The railcar adapter according to claim 9 , wherein the top cover is delimited by two parallel third lateral surfaces perpendicular to the first axis of symmetry of the bearing seat, two opposed third rounded surfaces connecting the third lateral surfaces, a substantially flat inner surface in radial contact with the substantially flat outer surface of the at least one damping element and an outer surface configured to contact the railcar body, the substantially flat inner surface of the top cover having a plurality of first and second radial portions extending radially inwards and respectively cooperating with the first and second cuttings of the at least one damping element.

11. The railcar adapted according to claim 8 , wherein the at least one damping element comprises an elastomeric pad.

12. A railcar adapter, for connecting a railcar body to a bearing, comprising:
a bearing seat side configured to be secured to the bearing,
a frame seat side configured to be secured to a bogie frame of the railcar body,
a top cover including radial portions extending toward the bearing and configured to contact the railcar body and forming the frame seat side,
a bearing seat configured to be mounted on the bearing and forming the bearing seat side, and
at least one damping element located between the top cover and the bearing seat,
wherein the bearing seat has an inner surface configured to radially contact the bearing and an outer surface having a central cutting, the central cutting having a bottom, the at least one damping element being located in the cutting and located entirely radially outward of the bottom of the cutting, and
wherein the bearing seat comprises two lateral channels each axially delimited by a pair of opposed lugs and a lateral surface perpendicular to the opposed lugs and parallel to a first axis of symmetry of the bearing seat, each lateral channel being adapted to cooperate with the railcar body.

13. A railcar adapter assembly comprising:
a bearing,
the railcar adapter according to claim 12 having the bearing seat side secured to the bearing,
a backing ring axially contacting a first side of the bearing, and
an end cap assembly axially contacting the bearing at a second side, opposite to the first side.

14. The railcar adapter according to claim 12 , wherein the bottom of the central cutting is substantially flat.

15. The railcar adapter according to claim 12 , wherein the at least one damping element projects radially outward from the central cutting.

16. The railcar adapter according to claim 12 , wherein at least a portion of the top cover extends into the central cutting.

17. The railcar adapter according to claim 12 ,
wherein the central cutting is delimited by two parallel first lateral surfaces perpendicular to a first axis of symmetry of the adapter, two opposed first rounded surfaces connecting the first lateral surfaces, and a bottom in radial contact with the at least one damping element, and
wherein the at least one damping element is delimited by two parallel second lateral surfaces perpendicular to the first axis of symmetry of the adapter, two opposed second rounded surfaces connecting the second lateral surfaces, a substantially flat inner surface in radial contact with the bottom of the central cutting and a substantially flat outer surface, each second lateral surface being provided with first cuttings and each second rounded portions being provided with second cuttings.

Assignees

• Fenayon Ludovic
• Le Moigne Thierry
• Skf Ab

Inventors

• Fenayon Ludovic
• Le Moigne Thierry

Classifications

• F16C2326/02

  Wheel hubs or castors · CPC title

• B61F15/20 Primary

  Details · CPC title

• B61F5/26 Primary

  Mounting or securing axle-boxes in vehicle or bogie underframes · CPC title

• F16C27/066

  Ball or roller bearings · CPC title

• B61F15/06

  for cars · CPC title