EP4096982B1 - Arrangement for increasing the adhesion coefficient in a rail vehicle - Google Patents

Arrangement for increasing the adhesion coefficient in a rail vehicle Download PDF

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Publication number
EP4096982B1
EP4096982B1 EP21711771.2A EP21711771A EP4096982B1 EP 4096982 B1 EP4096982 B1 EP 4096982B1 EP 21711771 A EP21711771 A EP 21711771A EP 4096982 B1 EP4096982 B1 EP 4096982B1
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EP
European Patent Office
Prior art keywords
wheel
rail
cleaning device
rail vehicle
running surface
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Active
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EP21711771.2A
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German (de)
French (fr)
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EP4096982A1 (en
Inventor
Alexander Fege
Heiko Meyer
Kilian ROSSIG
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Siemens Mobility GmbH
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Siemens Mobility GmbH
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Publication of EP4096982A1 publication Critical patent/EP4096982A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B1/00—Cleaning by methods involving the use of tools
    • B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
    • B08B1/14—Wipes; Absorbent members, e.g. swabs or sponges
    • B08B1/143—Wipes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B1/00—Cleaning by methods involving the use of tools
    • B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
    • B08B1/12—Brushes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B5/00—Cleaning by methods involving the use of air flow or gas flow
    • B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61C—LOCOMOTIVES; MOTOR RAILCARS
    • B61C15/00—Maintaining or augmenting the starting or braking power by auxiliary devices and measures; Preventing wheel slippage; Controlling distribution of tractive effort between driving wheels
    • B61C15/08—Preventing wheel slippage

Definitions

  • the invention relates to an arrangement for increasing the adhesion coefficient between a wheel of a rail vehicle and a rail traveled by the rail vehicle.
  • the adhesion coefficient is understood to be a ratio between a transferable circumferential force and a normal force.
  • circumferential force is a transferable driving force that acts on the circumference of a rail vehicle wheel and drives or brakes it in the longitudinal direction of the rail vehicle.
  • the normal force is the force that presses via the wheel of the rail vehicle onto the rail on which the rail vehicle is traveling. It is generated by the weight of the rail vehicle.
  • the adhesion coefficient is decisive for the tractive force or braking force of the rail vehicle.
  • WO 2019 219223 A1 It is known to use a measuring unit to determine a transverse offset of a rail traveled by a rail vehicle relative to an effective range of a track conditioning unit.
  • the track conditioning unit is used to process auxiliary media (sand, water, Air) is applied to the rails in use, so that a traction coefficient between the rail and a wheel of the rail vehicle is increased.
  • the invention relates to an arrangement for increasing the adhesion coefficient in a rail vehicle.
  • the arrangement includes a rail vehicle wheel, a cleaning device and a rail traveled by the rail vehicle.
  • the wheel of the rail vehicle is coupled to the cleaning device so that the cleaning device acts on the wheel when necessary.
  • the cleaning device is arranged and designed in such a way that moisture adhering to a wheel tread is at least reduced before the wheel tread touches the rail. This ensures that a traction coefficient is increased in the contact area of the wheel tread with the rail.
  • the cleaning device is arranged and designed in such a way that the moisture adhering to the wheel tread is removed by drying.
  • the cleaning device is arranged and designed in such a way that dirt adhering to the wheel tread is reduced or removed.
  • the cleaning device has at least one compressed air outlet through which compressed air is directed onto the wheel or onto the wheel tread.
  • the outlet is arranged at the level of the wheel axle.
  • the cleaning device is designed as a mechanical cleaning system that acts on the wheel tread.
  • the mechanical cleaning system has a cleaning block or a cleaning brush.
  • the cleaning block or cleaning brush is movably mounted so that it can be pressed onto the wheel tread via a coupling system if necessary.
  • the resulting friction causes the wheel to heat up, which causes the wheel to dry additionally.
  • the coupling system is designed as a pneumatic system.
  • the cleaning device is coupled to a track conditioning unit.
  • the track conditioning unit applies an auxiliary medium, preferably sand or air, to the rail in order to further increase the adhesion coefficient.
  • the compressed air is passed through a heating device before being discharged via the compressed air outlet.
  • the heating device is designed to heat the compressed air, so that the heated compressed air delivered via the compressed air outlet additionally dries the wheel tread or the wheel.
  • the heating device is arranged between a compressed air generating device and the compressed air outlet, so that the compressed air reaches the heating device as a compressed air stream.
  • the heating device is arranged and designed in such a way that it encloses the compressed air flow.
  • the heating device is designed as a heatable tube or as a heatable copper tube through which the compressed air volume flow is passed for heating.
  • the heating device is arranged and designed in such a way that the compressed air volume flow flows around the heating device.
  • the heating device is designed as a glow wire which is arranged in the compressed air volume flow in order to heat it.
  • the heating device is designed as a heat exchanger that transfers heat from a fluid to the compressed air volume flow.
  • the fluid used to supply heat is a transformer oil in a transformer cooling circuit of the rail vehicle is used to dissipate heat from the transformer.
  • the fluid used to supply heat is engine cooling water, which is used in an engine cooling circuit of the rail vehicle to remove heat from the engine.
  • the present invention achieves drying or cleaning of the wheel of the rail vehicle.
  • the present invention also causes an immediate increase in tractive force or braking force if the running circle of the wheel changes as the wheel rolls on the rail.
  • the present invention causes an immediate increase in tractive force or braking force if the running circle of the wheel as a whole is not dry or dry enough.
  • the present invention causes an immediate increase in tractive force or braking force if there are lubricating fluid residues from a wheel flange lubrication system on the wheel.
  • the present invention achieves both an increase in tractive force and an improved braking effect on rail vehicles.
  • the compressed air used for drying or cleaning the wheel can be saved, while at the same time maintaining or increasing the cleaning or drying effects on the wheel.
  • the special contour of the wheel with its tapered tread and wheel flange is used to effectively remove water and dirt from the wheel.
  • FIG 1 shows a first embodiment of the present invention using a chassis FW of a rail vehicle.
  • the chassis FW includes a frame 1 to which a wheel set with a wheel 3 is attached.
  • the wheel 3 is in contact with a rail 2 in a partial area, the contact circumference BU.
  • Two compressed air outlets 4 are directed onto the wheel 3, via which compressed air DL reaches a wheel tread RLF.
  • the two compressed air outlets 4 are arranged opposite one another in relation to the wheel diameter or at the height of the wheel axle, so that they act on the wheel tread RLF from two sides.
  • FIG 2 shows a no longer claimed second embodiment based on a chassis FW of a rail vehicle.
  • the chassis FW includes a frame 1 to which a wheel set with a wheel 3 is attached.
  • the wheel 3 is in contact with a rail 2 in a partial area, the contact circumference BU.
  • a mechanical cleaning system 5 is pressed onto a wheel tread RLF, for example via a pneumatic system 6, in order to dry it of moisture or to clean it.
  • the mechanical cleaning system 5 contains a cleaning block or a cleaning brush, which acts on the wheel 3 for cleaning or drying.
  • the resulting friction causes the wheel 3 to heat up, which causes the wheel 3 to dry additionally.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)

Description

Die Erfindung betrifft eine Anordnung zur Erhöhung des Kraftschlussbeiwerts zwischen einem Rad eines Schienenfahrzeugs und einer vom Schienenfahrzeug befahrenen Schiene.The invention relates to an arrangement for increasing the adhesion coefficient between a wheel of a rail vehicle and a rail traveled by the rail vehicle.

Unter dem Kraftschlussbeiwert wird ein Verhältnis zwischen einer übertragbaren Umfangskraft und einer Normalkraft verstanden.The adhesion coefficient is understood to be a ratio between a transferable circumferential force and a normal force.

Beim Schienenfahrzeug wird als Umfangskraft eine übertragbare Antriebskraft bezeichnet, die am Umfang eines Schienenfahrzeug-Rads angreift und dieses in Längsrichtung des Schienenfahrzeugs antreibt oder abbremst.In rail vehicles, circumferential force is a transferable driving force that acts on the circumference of a rail vehicle wheel and drives or brakes it in the longitudinal direction of the rail vehicle.

Als Normalkraft wird beim Schienenfahrzeug die Kraft bezeichnet, die über das Rad des Schienenfahrzeugs auf die vom Schienenfahrzeug befahrene Schiene drückt. Sie wird durch das Gewicht des Schienenfahrzeugs erzeugt.In a rail vehicle, the normal force is the force that presses via the wheel of the rail vehicle onto the rail on which the rail vehicle is traveling. It is generated by the weight of the rail vehicle.

Der Kraftschlussbeiwert ist maßgeblich für eine Zugkraft bzw. Bremskraft des Schienenfahrzeugs.The adhesion coefficient is decisive for the tractive force or braking force of the rail vehicle.

Es ist bekannt, zur Verbesserung der Zugkraft bzw. der Bremskraft eines Schienenfahrzeugs Maßnahmen an den Schienen zu ergreifen, die auch als Gleiskonditionierung bezeichnet werden.It is known to take measures on the rails to improve the tractive force or the braking force of a rail vehicle, which are also referred to as track conditioning.

Aus Dokument WO 2019 219223 A1 ist bekannt, mit Hilfe einer Messeinheit einen Querversatz einer von einem Schienenfahrzeug befahrenen Schiene relativ zu einem Wirkbereich einer Gleiskonditioniereinheit zu ermitteln. Die Gleiskonditioniereinheit wird dazu verwendet, um Hilfsmedien (Sand, Wasser, Luft) auf die befahrenen Schienen aufzubringen, so dass ein Kraftschluss-Beiwert zwischen der Schiene und einem Rad des Schienenfahrzeugs erhöht wird. Durch diese Maßnahmen wird als positiver Effekt der Schlupf zwischen Rad und Schiene bzw. Gleis verringert und übertragbare Brems- und Zugkräfte werden erhöht.From document WO 2019 219223 A1 It is known to use a measuring unit to determine a transverse offset of a rail traveled by a rail vehicle relative to an effective range of a track conditioning unit. The track conditioning unit is used to process auxiliary media (sand, water, Air) is applied to the rails in use, so that a traction coefficient between the rail and a wheel of the rail vehicle is increased. These measures have a positive effect of reducing the slip between the wheel and the rail or track and increasing the transferable braking and traction forces.

Aus Dokument DE 23 00 046 A1 ist eine chemische Zusammensetzung eines Adhäsionsverstärker für Eisenbahn-Fahrzeuge bekannt.From document DE 23 00 046 A1 a chemical composition of an adhesion enhancer for railway vehicles is known.

Aus Dokument CN 109 664 914 A ist ein System zum Wiederherstellen der Haftung einer Güterlokomotive mit Scheibenbremsen bekannt.From document CN 109 664 914 A a system for restoring the grip of a freight locomotive with disc brakes is known.

Aus Dokument CN 107 031 668 A ist eine Lokomotivlaufflächen-Kehrsteuervorrichtung bekannt.From document CN 107 031 668 A A locomotive tread sweeping control device is known.

Es ist Aufgabe der vorliegenden Erfindung, eine Anordnung anzugeben, mit der eine weitere Verbesserung der Zugkraft bzw. der Bremskraft eines Schienenfahrzeugs erreicht wird.It is the object of the present invention to provide an arrangement with which a further improvement in the tractive force or the braking force of a rail vehicle is achieved.

Diese Aufgabe wird durch die Merkmale des Anspruchs 1 gelöst. Vorteilhafte Weiterbildungen sind in den abhängigen Ansprüchen angegeben.This task is solved by the features of claim 1. Advantageous further developments are specified in the dependent claims.

Die Erfindung betrifft eine Anordnung zur Erhöhung des Kraftschlussbeiwerts bei einem Schienenfahrzeug. Die Anordnung beinhaltet ein Schienenfahrzeug-Rad, eine Reinigungseinrichtung und eine vom Schienenfahrzeug befahrene Schiene. Das Rad des Schienenfahrzeugs ist mit der Reinigungseinrichtung gekoppelt, so dass die Reinigungseinrichtung bei Bedarf auf das Rad wirkt. Die Reinigungseinrichtung ist derart angeordnet und ausgebildet, dass an einer Radlauffläche anhaftende Feuchtigkeit zumindest reduziert wird, bevor die Radlauffläche die Schiene berührt. Dadurch wird erreicht, dass ein Kraftschlussbeiwert im Berührbereich der Radlauffläche mit der Schiene erhöht wird.The invention relates to an arrangement for increasing the adhesion coefficient in a rail vehicle. The arrangement includes a rail vehicle wheel, a cleaning device and a rail traveled by the rail vehicle. The wheel of the rail vehicle is coupled to the cleaning device so that the cleaning device acts on the wheel when necessary. The cleaning device is arranged and designed in such a way that moisture adhering to a wheel tread is at least reduced before the wheel tread touches the rail. This ensures that a traction coefficient is increased in the contact area of the wheel tread with the rail.

In einer vorteilhaften Weiterbildung ist die Reinigungseinrichtung derart angeordnet und ausgebildet, dass die an der Radlauffläche anhaftende Feuchtigkeit durch Trocknung entfernt wird.In an advantageous development, the cleaning device is arranged and designed in such a way that the moisture adhering to the wheel tread is removed by drying.

In einer vorteilhaften Weiterbildung ist die Reinigungseinrichtung derart angeordnet und ausgebildet, dass an der Radlauffläche anhaftender Schmutz reduziert oder entfernt wird.In an advantageous development, the cleaning device is arranged and designed in such a way that dirt adhering to the wheel tread is reduced or removed.

In einer vorteilhaften Weiterbildung weist die Reinigungseinrichtung zumindest einen Druckluft-Auslass auf, durch den Druckluft auf das Rad oder auf die Radlauffläche gerichtet ist.In an advantageous development, the cleaning device has at least one compressed air outlet through which compressed air is directed onto the wheel or onto the wheel tread.

In einer vorteilhaften Weiterbildung ist der Auslass in Höhe der Radachse angeordnet.In an advantageous development, the outlet is arranged at the level of the wheel axle.

In einer nicht mehr beanspruchten Weiterbildung ist die Reinigungseinrichtung als mechanisches Reinigungssystem ausgebildet, das auf die Radlauffläche wirkt.In a development that is no longer claimed, the cleaning device is designed as a mechanical cleaning system that acts on the wheel tread.

In einer nicht mehr beanspruchten Weiterbildung weist das mechanische Reinigungssystem einen Putzklotz oder eine Putzbürste auf. Der Putzklotz oder die Putzbürste ist beweglich gelagert, um bei Bedarf über ein Koppelsystem auf die Radlauffläche gedrückt zu werden.In a development that is no longer claimed, the mechanical cleaning system has a cleaning block or a cleaning brush. The cleaning block or cleaning brush is movably mounted so that it can be pressed onto the wheel tread via a coupling system if necessary.

Über eine dabei entstehende Reibung wird eine Erwärmung des Rads erzielt, die eine zusätzliche Trocknung des Rads bewirkt.The resulting friction causes the wheel to heat up, which causes the wheel to dry additionally.

In einer nicht mehr beanspruchten Weiterbildung ist das Koppelsystem als pneumatisches System ausgebildet.In a development that is no longer used, the coupling system is designed as a pneumatic system.

In einer vorteilhaften Weiterbildung ist die Reinigungseinrichtung mit einer Gleiskonditioniereinheit gekoppelt. Die Gleiskonditioniereinheit bringt ein Hilfsmedium, bevorzugt Sand oder Luft, auf die Schiene auf, um den Kraftschluss-Beiwert zusätzlich zu erhöhen.In an advantageous development, the cleaning device is coupled to a track conditioning unit. The track conditioning unit applies an auxiliary medium, preferably sand or air, to the rail in order to further increase the adhesion coefficient.

In einer bevorzugten Weiterbildung wird die Druckluft vor einem Ausbringen über den Druckluft-Auslass durch eine Heizeinrichtung geführt. Die Heizeinrichtung ist zur Erwärmung der Druckluft ausgebildet, so dass die über den Druckluft-Auslass ausgebrachte, erwärmte Druckluft die Radlauffläche bzw. das Rad zusätzlich trocknet.In a preferred development, the compressed air is passed through a heating device before being discharged via the compressed air outlet. The heating device is designed to heat the compressed air, so that the heated compressed air delivered via the compressed air outlet additionally dries the wheel tread or the wheel.

In einer bevorzugten Weiterbildung ist die Heizeinrichtung zwischen einer Drucklufterzeugungseinrichtung und dem Druckluft-Auslass angeordnet, so dass die Druckluft als Druckluftstrom zur Heizeinrichtung gelangt.In a preferred development, the heating device is arranged between a compressed air generating device and the compressed air outlet, so that the compressed air reaches the heating device as a compressed air stream.

In einer bevorzugten Weiterbildung ist die Heizeinrichtung derart angeordnet und ausgebildet, dass sie den Druckluftstrom umschließt.In a preferred development, the heating device is arranged and designed in such a way that it encloses the compressed air flow.

In einer bevorzugten Weiterbildung ist die Heizeinrichtung als heizbares Rohr bzw. als heizbares Kupferrohr ausgebildet, durch das der Druckluftvolumenstrom zur Erwärmung geleitet wird.In a preferred development, the heating device is designed as a heatable tube or as a heatable copper tube through which the compressed air volume flow is passed for heating.

In einer bevorzugten Weiterbildung ist die Heizeinrichtung derart angeordnet und ausgebildet, dass die Heizeinrichtung vom Druckluftvolumenstrom umströmt wird.In a preferred development, the heating device is arranged and designed in such a way that the compressed air volume flow flows around the heating device.

In einer bevorzugten Weiterbildung ist die Heizeinrichtung als Glühdraht ausgebildet, der im Druckluftvolumenstrom angeordnet ist, um diesen zu erwärmen.In a preferred development, the heating device is designed as a glow wire which is arranged in the compressed air volume flow in order to heat it.

In einer bevorzugten Weiterbildung ist die Heizeinrichtung als Wärmetauscher ausgebildet, der Wärme eines Fluids auf den Druckluftvolumenstrom überträgt.In a preferred development, the heating device is designed as a heat exchanger that transfers heat from a fluid to the compressed air volume flow.

In einer bevorzugten Weiterbildung ist das zur Wärmezuführung verwendete Fluid ein Transformator-Öl, das in einem Transformator-Kühlkreislauf des Schienenfahrzeugs dazu verwendet ist, um Wärme vom Transformator abzuführen.In a preferred development, the fluid used to supply heat is a transformer oil in a transformer cooling circuit of the rail vehicle is used to dissipate heat from the transformer.

In einer bevorzugten Weiterbildung ist das zur Wärmezuführung verwendete Fluid ein Motorkühlwasser, das in einem MotorKühlkreislauf des Schienenfahrzeugs dazu verwendet ist, um Wärme vom Motor abzuführen.In a preferred development, the fluid used to supply heat is engine cooling water, which is used in an engine cooling circuit of the rail vehicle to remove heat from the engine.

Durch die vorliegende Erfindung wird eine Trocknung bzw. Reinigung des Rads des Schienenfahrzeugs erreicht.The present invention achieves drying or cleaning of the wheel of the rail vehicle.

Bei der vorliegenden Erfindung wurde erkannt, dass es auch bei einer gereinigten bzw. getrockneten Schiene zu Verzögerungen beim Einsetzen der Zugkraft- bzw. Bremskraft kommen kann. Diese Verzögerung wird über das Rad des Schienenfahrzeugs bedingt, so dass hier die Erfindung ansetzt.In the present invention, it was recognized that even with a cleaned or dried rail, there can be delays in the onset of the traction or braking force. This delay is caused by the wheel of the rail vehicle, so this is where the invention comes into play.

Die vorliegende Erfindung bewirkt auch dann eine unmittelbar einsetzende Zugkraft- bzw. Bremskrafterhöhung, wenn sich der Laufkreis des Rads beim Abrollen des Rads auf der Schiene ändert .The present invention also causes an immediate increase in tractive force or braking force if the running circle of the wheel changes as the wheel rolls on the rail.

Die vorliegende Erfindung bewirkt eine unmittelbar einsetzende Zugkraft- bzw. Bremskrafterhöhung, wenn der Laufkreis des Rads in seiner Gesamtheit gesehen nicht trocken bzw. trocken genug ist.The present invention causes an immediate increase in tractive force or braking force if the running circle of the wheel as a whole is not dry or dry enough.

Die vorliegende Erfindung bewirkt eine unmittelbar einsetzende Zugkraft- bzw. Bremskrafterhöhung, wenn sich auf dem Rad Schmierfluid-Reste einer Spurkranzschmieranlage befinden.The present invention causes an immediate increase in tractive force or braking force if there are lubricating fluid residues from a wheel flange lubrication system on the wheel.

Durch die vorliegende Erfindung wird sowohl eine Zugkrafterhöhung als auch eine verbesserte Bremswirkung beim Schienenfahrzeug erreicht.The present invention achieves both an increase in tractive force and an improved braking effect on rail vehicles.

Durch eine vorteilhafte Anordnung von Druckluft-Auslässen kann zur Trocknung bzw. Reinigung des Rads verwendete Druckluft gespart werden, bei gleichzeitiger Beibehaltung bzw. Verstärkung der Reinigungs- bzw. Trocknungseffekte am Rad.Through an advantageous arrangement of compressed air outlets, the compressed air used for drying or cleaning the wheel can be saved, while at the same time maintaining or increasing the cleaning or drying effects on the wheel.

Durch eine vorteilhafte Anordnung der Druckluft-Auslässe wird die spezielle Kontur des Rads mit kegeliger Lauffläche und dem Spurkranz dazu genutzt, um Wasser und Schmutz effektiv vom Rad zu entfernen.Thanks to an advantageous arrangement of the compressed air outlets, the special contour of the wheel with its tapered tread and wheel flange is used to effectively remove water and dirt from the wheel.

Durch die gekoppelte Verwendung der Reinigungseinrichtung mit der Gleiskonditioniereinheit wird eine schnell einsetzende Verbesserung der Zugkraft- bzw. Bremskraft erreicht.Through the coupled use of the cleaning device with the track conditioning unit, a rapid improvement in the tractive force or braking force is achieved.

Nachfolgend wird die vorliegende Erfindung beispielhaft anhand einer Zeichnung näher erläutert. Dabei zeigt:

  • FIG 1 eine erste Ausgestaltung der vorliegenden Erfindung und
  • FIG 2 eine nicht mehr beanspruchte zweite Ausgestaltung.
The present invention is explained in more detail below using a drawing as an example. This shows:
  • FIG 1 a first embodiment of the present invention and
  • FIG 2 a second embodiment that is no longer claimed.

FIG 1 zeigt eine erste Ausgestaltung der vorliegenden Erfindung anhand eines Fahrwerks FW eines Schienenfahrzeugs. FIG 1 shows a first embodiment of the present invention using a chassis FW of a rail vehicle.

Das Fahrwerk FW beinhaltet einen Rahmen 1, an dem ein Radsatz mit einem Rad 3 befestigt ist.The chassis FW includes a frame 1 to which a wheel set with a wheel 3 is attached.

Das Rad 3 steht in einem Teilbereich, dem Berührumfang BU, mit einer Schiene 2 in Berührung.The wheel 3 is in contact with a rail 2 in a partial area, the contact circumference BU.

Auf das Rad 3 sind zwei Druckluft-Auslässe 4 gerichtet, über die Druckluft DL auf eine Radlauffläche RLF gelangt.Two compressed air outlets 4 are directed onto the wheel 3, via which compressed air DL reaches a wheel tread RLF.

Diese Bestandteile verwirklichen die Reinigungseinrichtung.These components realize the cleaning device.

Die beiden Druckluft-Auslässe 4 sind in Bezug zum Raddurchmesser bzw. auf Höhe der Radachse einander gegenüberliegend angeordnet, so dass sie von zwei Seiten auf die Radlauffläche RLF wirken.The two compressed air outlets 4 are arranged opposite one another in relation to the wheel diameter or at the height of the wheel axle, so that they act on the wheel tread RLF from two sides.

Durch die beiden Druckluft-Auslässe 4 wird Feuchtigkeit bzw. Schmutz vom Rad 3 entfernt bzw. wird das Rad 3 über die Radlauffläche RLF und damit auch der Berührumfang BU getrocknet, um eine Verbesserung der Zugkraft bzw. der Bremskraft zu realisieren.Through the two compressed air outlets 4, moisture or dirt is removed from the wheel 3 or the wheel 3 is dried via the wheel tread RLF and thus also the contact circumference BU in order to improve the tractive force or the braking force.

FIG 2 zeigt eine nicht mehr beanspruchte zweite Ausgestaltung anhand eines Fahrwerks FW eines Schienenfahrzeugs. FIG 2 shows a no longer claimed second embodiment based on a chassis FW of a rail vehicle.

Das Fahrwerk FW beinhaltet einen Rahmen 1, an dem ein Radsatz mit einem Rad 3 befestigt ist.The chassis FW includes a frame 1 to which a wheel set with a wheel 3 is attached.

Das Rad 3 steht in einem Teilbereich, dem Berührumfang BU, mit einer Schiene 2 in Berührung.The wheel 3 is in contact with a rail 2 in a partial area, the contact circumference BU.

Ein mechanisches Reinigungssystem 5 wird, beispielsweise über ein pneumatisches System 6, bei Bedarf auf eine Radlauffläche RLF gepresst, um diese von Feuchtigkeit zu trocknen bzw. um diese zu reinigen.If necessary, a mechanical cleaning system 5 is pressed onto a wheel tread RLF, for example via a pneumatic system 6, in order to dry it of moisture or to clean it.

Diese Bestandteile verwirklichen die Reinigungseinrichtung.These components realize the cleaning device.

Das mechanische Reinigungssystem 5 enthält einen Putzklotz oder eine Putzbürste, die auf das Rad 3 zur Reinigung bzw. Trocknung einwirken.The mechanical cleaning system 5 contains a cleaning block or a cleaning brush, which acts on the wheel 3 for cleaning or drying.

Über eine dabei entstehende Reibung wird eine Erwärmung des Rads 3 erzielt, die eine zusätzliche Trocknung des Rads 3 bewirkt. The resulting friction causes the wheel 3 to heat up, which causes the wheel 3 to dry additionally.

Claims (4)

  1. Arrangement for increasing the adhesion coefficient at a rail vehicle,
    - having a rail-vehicle wheel, having a cleaning device and having a rail which is travelled on by the rail vehicle,
    - in which the wheel of the rail vehicle is coupled to the cleaning device such that the cleaning device acts on the wheel according to requirement,
    - in which the cleaning device is arranged and designed in such a way that moisture adhering to a wheel running surface is at least reduced before the wheel running surface makes contact with the rail,
    - so that an adhesion coefficient in the region of contact of the wheel running surface with the rail is increased,
    - in which the cleaning device has at least one compressed-air outlet through which compressed air is directed to the wheel running surface, and
    - in which the compressed-air outlet is arranged at the height of the wheel axis.
  2. Arrangement according to Claim 1, in which the cleaning device is arranged and designed in such a way that the moisture adhering to the wheel running surface is removed by drying.
  3. Arrangement according to Claim 1 or 2, in which the cleaning device is arranged and designed in such a way that dirt adhering to the wheel running surface is reduced or removed.
  4. Arrangement according to one of the preceding claims,
    - in which the cleaning device is coupled to a track-conditioning unit,
    - in which the track-conditioning unit applies an auxiliary medium, preferably sand or air, to the rail in order to additionally increase the adhesion coefficient.
EP21711771.2A 2020-03-12 2021-03-03 Arrangement for increasing the adhesion coefficient in a rail vehicle Active EP4096982B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020203183.5A DE102020203183A1 (en) 2020-03-12 2020-03-12 Arrangement for increasing the coefficient of adhesion in a rail vehicle
PCT/EP2021/055242 WO2021180524A1 (en) 2020-03-12 2021-03-03 Arrangement for increasing the adhesion coefficient in a rail vehicle

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DE6924556U (en) 1969-06-18 1969-11-20 Bergische Stahlindustrie DEVICE FOR CLEANING BANDAGES OF RAIL VEHICLE WHEELS
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DE20319041U1 (en) 2003-12-09 2004-04-15 Dierl, Ludwig, Dipl.-Ing. Train rail cleaning device, comprises press brush, press shoe, air jet nozzle and brush roll
DE102011110051A1 (en) 2011-08-12 2013-02-14 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Pneumatic track cleaning device for rail vehicle, has cleaning section that is arranged in upstream of contact surface of rail to remove particles adhered to contact surface
CN107031668A (en) * 2016-11-25 2017-08-11 青岛思锐科技有限公司 Locomotive tread sweeping control device
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CN109664914A (en) * 2019-01-25 2019-04-23 吕振国 A kind of system for restoring adhesion strength for disc braking freight locomotive

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