Sanding system for a rail vehicle

Patent metadata

Field	Value
Publication number	US-11952017-B2
Application number	US-202118257635-A
Country	US
Kind code	B2
Filing date	Nov 17, 2021
Priority date	Dec 15, 2020
Publication date	Apr 9, 2024
Grant date	Apr 9, 2024

Abstract

The invention relates to a sanding system for a rail vehicle with a grit container, with a conveying device and with a feeding device. The grit container contains a grit. The grit passes from the grit container into the conveying device and from the conveying device into the feeding device. The feeding device is configured in such a way that the grit can be introduced in a targeted manner into a wheel region and/or into a rail region of the rail vehicle. The conveying device has a driven conveyor worm which rotates about a longitudinal axis and by way of which the grit passes from the grit container into a conveying chamber. Compressed air can be introduced into the conveying chamber, in order to transport the grit from the conveying chamber into the feeding device.

First claim

The invention claimed is:

1. A sanding system for a rail vehicle, the sanding system comprising:
a grit container containing grit;
a conveying device connected to said grit container, wherein the grit passes from said grit container into said conveying device; and
a feeding device connected to said conveying device, wherein the grit passes from said conveying device into said feeding device;
said feeding device being configured to feed the grit in a targeted manner toward at least one of a rail vehicle wheel or a rail;
said conveying device including a driven conveying worm configured to rotate about a longitudinal axis and conveying the grit from said grit container into a conveying chamber;
an electric motor being a steplessly speed-controlled drive connected for driving said conveying worm, said electric motor to be controlled for controlling a rotational speed:
to set, based on a predetermined grain size of the grit, a delivery amount of the grit by changing the rotational speed;
to set a speed of rotation of said conveying worm depending on the grain size of the grit in order to discharge the grit uniformly and sparingly; and

a compressed air injection device including a compressed air nozzle for introducing compressed air at a lateral region into said conveying chamber, said compressed air injection device being configured:
in an active state of the conveying device, to transport the grit from said conveying chamber into said feeding device and,
in an inactive state of the conveying device, to inject compressed air for at least one of cleaning or drying the feeding device.

2. The sanding system according to claim 1 , wherein said conveying device comprises an elongate worm chamber in which said conveying worm is disposed, and wherein at least one of said worm chamber or said conveying worm are horizontally oriented or have an upward or downward inclination relative to a horizontal plane.

3. The sanding system according to claim 1 , wherein said conveying chamber has a hollow configuration and is disposed between said conveying device and said feeding device such that the grit, which is conveyed from an inlet zone of said conveying device into an outlet zone of said conveying device over the entire said worm chamber, falls vertically into said conveying chamber.

4. The sanding system according to claim 3 , wherein said compressed air injection device comprises a compressed-air nozzle connected to said conveying chamber.

5. The sanding system according to claim 4 , wherein said compressed-air nozzle is arranged in a lateral region of said conveying chamber.

6. The sanding system according to claim 4 , wherein said compressed-air nozzle is controlled as follows:
for an active conveying device, to cause compressed air to catch the grit falling into said conveying chamber and to transport the grit into said feeding device; or
for an inactive conveying device, to cause the compressed air that is introduced into said feeding device via said conveying chamber to clean or dry said feeding device.

7. The sanding system according to claim 1 , wherein a transition from said conveying chamber to said feeding device is configured as a Venturi nozzle or as a de Laval nozzle.

8. The sanding system according to claim 1 , wherein said conveying device or said worm chamber is formed with an inspection opening for at least one of cleaning or emptying grit therefrom.

9. The sanding system according to claim 8 , wherein said inspection opening is formed at a lowest point of said conveying device or said worm chamber.

10. The sanding system according to claim 1 , wherein said feeding device is configured to introduce the grit in a targeted manner into a wheel-rail nip of the rail vehicle.

11. The sanding system according to claim 1 , wherein said grit container has a flange with through-opening at a lowest point thereof that is connected to a flange with through-opening of said conveying device, and wherein said openings are formed to enable the grit to pass directly by gravity into said conveying device or into said worm chamber.

Assignees

• Siemens Mobility GmbH

Inventors

• Böge Ronny
• Maurer Michel
• Stelzle Wilfried

Classifications

• B61C15/107 Primary

  with electrically or electromagnetically controlled sanding equipment · CPC title

• B61C15/102

  with sanding equipment of mechanical or fluid type, e.g. by means of steam · CPC title