US 11,952,017 B2
Sanding system for a rail vehicle
Ronny Böge, Olching (DE); Michel Maurer, Munich (DE); and Wilfried Stelzle, Kleinberghofen (DE)
Assigned to Siemens Mobility GmbH, Munich (DE)
Appl. No. 18/257,635
Filed by Siemens Mobility GmbH, Munich (DE)
PCT Filed Nov. 17, 2021, PCT No. PCT/EP2021/081976
§ 371(c)(1), (2) Date Jun. 15, 2023,
PCT Pub. No. WO2022/128294, PCT Pub. Date Jun. 23, 2022.
Claims priority of application No. 10 2020 215 952.1 (DE), filed on Dec. 15, 2020.
Prior Publication US 2024/0043046 A1, Feb. 8, 2024
Int. Cl. B61C 15/10 (2006.01)
CPC B61C 15/107 (2013.01) [B61C 15/102 (2013.01)] 11 Claims
OG exemplary drawing
 
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.