EP3275759B1 - Method for lifting a wheel rail friction coefficient in a rail vehicle - Google Patents

Method for lifting a wheel rail friction coefficient in a rail vehicle Download PDF

Info

Publication number
EP3275759B1
EP3275759B1 EP17183568.9A EP17183568A EP3275759B1 EP 3275759 B1 EP3275759 B1 EP 3275759B1 EP 17183568 A EP17183568 A EP 17183568A EP 3275759 B1 EP3275759 B1 EP 3275759B1
Authority
EP
European Patent Office
Prior art keywords
fluid
rail
wheel
outlet nozzle
jet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP17183568.9A
Other languages
German (de)
French (fr)
Other versions
EP3275759A1 (en
Inventor
Thomas KÜNZEL
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alstom Transportation Germany GmbH
Original Assignee
Bombardier Transportation GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bombardier Transportation GmbH filed Critical Bombardier Transportation GmbH
Publication of EP3275759A1 publication Critical patent/EP3275759A1/en
Application granted granted Critical
Publication of EP3275759B1 publication Critical patent/EP3275759B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B61RAILWAYS
    • B61CLOCOMOTIVES; MOTOR RAILCARS
    • B61C15/00Maintaining or augmenting the starting or braking power by auxiliary devices and measures; Preventing wheel slippage; Controlling distribution of tractive effort between driving wheels
    • B61C15/08Preventing wheel slippage
    • B61C15/085Preventing wheel slippage by dispersion of a fluid, e.g. containing chemicals

Definitions

  • the invention relates to a method for increasing a wheel-rail friction coefficient in a rail vehicle, a device for carrying out the method and a rail vehicle with the device.
  • sand usually gravel
  • a leading wheel set e.g. on snow, ice, rain, leaves, dirt or similar on the rail.
  • sand or gravel pieces are ground by the wheel and increase the coefficient of friction between the wheel and the rail.
  • the system used today with sand has the following principal disadvantages:
  • the sand is heavy.
  • Correspondingly large containers must be carried along on the rail vehicle.
  • a dosage of the sand, a response and a run after a shutdown is possible only with relatively large tolerances.
  • the sand must be well dried or dried further during operation. Pipes for the sand need to be heated. Wheels are only exposed to sand from one side, sanding in case of a change of direction is usually not possible.
  • a filling of a sanding plant is classified as harmful by a dust formation associated with it, so that automatic filling systems are needed.
  • the publication DE 10 2013 016 881 A1 describes a dispensing device for a first Reibwertmodifikator, a second Reibwertmodifikator or a mixture thereof.
  • Each coefficient of friction modifier can be solid, granular, pasty or liquid.
  • the dispensing device is provided for a rail vehicle.
  • the disadvantage here is that solid, granular Reibwertmodifikatoren can cause the same problems as sand or gravel.
  • Pasty or liquid Reibwertmodifikatoren can be displaced in a driving operation of a wheel-rail pairing or drain from a wheel surface or a rail surface.
  • an adhesive material is known, which is obtained from a shell adhesive.
  • the clam adhesive sticks firmly under water on almost any kind of surface and is robust.
  • the component dihydroxyphenylalanine (DOPA) which is an amino acid, contributes to this. From this, adhesives are already being derived which can be used in medicine.
  • a polymer adhesive having DOPA-derived nitrodopamine groups also has the property of decomposing under the irradiation of ultraviolet light. As a result, the shell adhesive is removable again.
  • the clam adhesive is also biocompatible. The disadvantage here is that, apart from an application in medicine, no further field of application has yet been found.
  • the invention is therefore based on the object to provide a method and an apparatus with which a wheel-rail coefficient of friction is increased, wherein an improved Reibwerter Chandes material is used.
  • the object is achieved in a method for increasing a wheel-rail coefficient of friction in a rail vehicle, wherein at least one fluid in a device is conducted from at least one storage container through at least one fluid connection to at least one outlet nozzle and in the direction of a wheel rail. Pairing out of the outlet nozzle, wherein at least one control unit controls at least an amount of the fluid.
  • the fluid adheres to a wheel-rail mating and forms at least one sticky surface, the fluid containing an amino acid, e.g. Dihydroxyphenylalanine (DOPA) and / or a related amino acid, e.g. Nitrodopamine, includes.
  • DOPA Dihydroxyphenylalanine
  • Nitrodopamine includes.
  • the advantage of the solution according to the invention is that, instead of sand, a novel fluid or a novel Newtonian or non-Newtonian fluid is used to increase the coefficient of friction.
  • a novel fluid or a novel Newtonian or non-Newtonian fluid is used to increase the coefficient of friction.
  • the fluid adheres to a wheel-rail pairing, ie on a wheel and / or a rail, and forms a sticky surface, so that the friction between the wheel and the rail is increased in a rolling of the wheel.
  • the fluid is stored and guided in a device comprising the reservoir, the fluid connection and the outlet nozzle.
  • the fluid is liquid-like or paste-like and is sprayed or sprayed in the direction of the wheel-rail pairing.
  • the fluid may thus be a Newtonian liquid or a non-Newtonian liquid and as such better guided and metered than e.g. Sand.
  • a fluid jet can be directed by spraying or spraying targeted to the wheel-rail pairing.
  • the fluid is biodegradable, particularly under the influence of ultraviolet radiation.
  • the fluid is biodegradable, particularly under the influence of ultraviolet radiation.
  • residues on the wheel and / or the rail are avoided. In particular, no polluting substances.
  • the fluid comprises at least one further constituent of a mussel adhesive.
  • This type of amino acid is biodegradable and water resistant and thus well usable even in rainy or humid weather. Nitrodopamine is redeposable under the influence of ultraviolet radiation.
  • the fluid may include at least one antifreeze that prevents freezing of the fluid in the device. In this way, the fluid is well usable even in cold weather.
  • the fluid may include at least one additive that prevents sticking of the fluid in the device and evaporates upon exit of the fluid from the outlet nozzle.
  • the reservoir, the fluid line and the outlet nozzle are protected from solidified fluid settling.
  • the fluid may have a specific gravity which is smaller than the specific gravity of sand, in particular gravel, and / or the fluid may be harmless to health. It is advantageous if the specific gravity of the fluid is smaller than that of sand, because this can be reduced by a rail vehicle mitologiedes weight.
  • a health-friendly fluid is advantageous for the maintenance personnel and it can be dispensed with a complex automatic filling of the device.
  • the reservoir is fluidly connected via the fluid connection with the outlet nozzle and the control unit is at least one actuator with the fluid connection in operative connection.
  • the outlet nozzle comprises at least one adjusting device, by means of which at least one property of at least one fluid jet is adjustable.
  • the fluid jet can be adjusted as needed.
  • the property of the fluid jet can thereby determine a size of a wetted surface on the wheel and / or the rail. As a result, an amount of the required fluid can be optimized.
  • the property of the fluid jet is at least one beam direction, at least one beam strength and / or at least one beam shape.
  • the beam direction and the beam strength can be set more accurately than e.g. when using sand.
  • a beam shape may e.g. be adjusted depending on the viscosity of the fluid.
  • At least one hydraulic pump, at least one maintenance unit, at least one check valve and at least one shut-off valve are arranged between the reservoir and the outlet nozzle, the maintenance unit preferably comprising at least one filter, at least one separator and at least one pressure reduction.
  • the components mentioned allow a good handling of the fluid within the device.
  • the filter is for cleaning the fluid and separators for separating e.g. excess water from the fluid.
  • the pressure reduction includes a pressure relief valve, which, despite possibly variable pressures on the inlet side, ensures that a certain outlet pressure is not exceeded on the outlet side.
  • the actuating device is in operative connection with at least one valve device in the fluid connection.
  • the actuating device together with the valve device serves to influence a flow rate or a metering of the fluid and can be actuated automatically or manually by means of the control unit.
  • At least one first fluid supply line and at least one second fluid supply line are arranged on opposite sides of a wheel in one direction of travel of the rail vehicle, and by means of at least one direction of travel switching, the fluid supply line belonging to the respective current travel direction can be activated. It is advantageous that the wheel-rail pairing can be wetted in both directions of travel of the rail vehicle of the fluid.
  • the device has at least one surface structure coming into contact with the fluid, which prevents sticking of the fluid to the surface structure, wherein the surface structure has, in particular, a lotus effect.
  • the lotus effect refers to the low wettability of a surface, as can be observed in a lotus plant surface, which has a special surface structure. Accordingly, liquids emit surface structures that are technical imitations of the natural surface structures of the lotus plant. Low wettability surface structures are also referred to as hydrophobic surfaces. It is important that sticking of the fluid to the surface structure in the device be prevented because it can prevent blockages and / or constrictions in the device.
  • the device can be heated and / or cooled.
  • the device can be operated both in cold and in warm ambient temperatures.
  • a rail vehicle with the device according to the invention.
  • the figure shows a schematic structure of a device according to the invention.
  • the device 1 according to the invention and two wheels 2 of a rail vehicle otherwise not shown are shown.
  • the wheels 2 move on a rail or running rail 3.
  • the device 1 comprises fluid power components which are arranged in a predetermined sequence along a fluid connection or a fluid line 5.
  • the fluid connection may comprise at least one tube and / or at least one tube.
  • the fluid connection 5 starts at a reservoir 4 for the fluid and continues to a hydraulic pump 6 adapted to the fluid.
  • a maintenance unit 7 with a filter 7a, a separator 7b and a pressure reduction 7c is arranged. Behind the maintenance unit 7, the fluid connection 5 leads to a check valve 9 and subsequently to a shut-off valve 10.
  • a control unit 8 is arranged with an actuating device 8a.
  • the control unit 8 is connected to the actuator 8a via a control line 8b.
  • the actuator 8a is connected to a valve device 8c in the fluid connection 5.
  • the fluid connection 5 further connects the shut-off valve 10 with a direction of travel switching 11, which divides the fluid connection 5 into a first fluid supply line 11a and a second fluid supply line 11b.
  • the first fluid supply line 11a leads to the wheels 2 and the rail 3 and is opposite to a first direction of travel x1 of the rail vehicle.
  • the second fluid supply line 11b leads to the wheels 2 and the rail 3 and is opposite to a second direction of travel x2 of the rail vehicle.
  • the first fluid supply line 11a and the second fluid supply line 11b each have a branch for two wheels 2, but may also have branches for more than two wheels 2.
  • the first fluid supply line 11a and the second fluid supply line 11b may each be provided unbranched and in each case only for one wheel 2.
  • an outlet nozzle 12 is arranged at each end of a first fluid supply line 11a and a second fluid supply line 11b.
  • the outlet nozzle 12 comprises an adjusting device, not shown in the figure, for a fluid jet emerging from the outlet nozzle and not shown in the figure.
  • the fluid is stored in the reservoir 4 and pumped out by means of the hydraulic pump 6 from the reservoir 4.
  • the fluid is removed from the impurities by means of the filter 7a.
  • the separator 7b for example, excess water is separated from the fluid.
  • the pressure reduction 7c comprises a pressure valve which, despite possibly variable pressures on the inlet side of the pressure valve, ensures that a certain outlet pressure is not exceeded on the outlet side of the pressure valve.
  • the control unit 8 controls the actuator 8a via a control line 8b in response to predetermined parameters, e.g. a sliding of a wheel 2 on the rail 3.
  • the actuator 8a can also be operated manually.
  • the actuator 8a actuates the valve means 8c for adjusting the flow rate of the fluid in the fluid connection.
  • the check valve 9 prevents backflow of the fluid in the fluid connection 5.
  • the fluid connection 5 can be shut off, e.g. when the rail vehicle is not in operation.
  • the direction of travel switching 11 allows operation of the device 1 in a first direction of travel x1 and a second direction of travel x2 of the rail vehicle.
  • the first fluid supply line 11a is opened and the second fluid supply line 11b is blocked.
  • the fluid is directed counter to the first direction of travel x1 to the wheels 2 or the rail 3, wherein the wheels roll in the first direction of travel x1.
  • the second fluid supply line 11b is opened and the first fluid supply line 11a is blocked.
  • the fluid is directed counter to the second direction of travel x2 to the wheels 2 or the rail 3, wherein the wheels 2 roll in the second direction of travel x2.
  • the direction of travel switching 10 can be omitted. Instead, for the first direction of travel x1 and the second direction of travel x2 each have their own device 1 may be present.
  • the fluid jet is adjusted by means of the adjusting device. If the fluid is a Newtonian liquid, it can be sprayed or sprayed. If the fluid is a non-Newtonian fluid, it can be injected.
  • a beam direction, a beam strength and a beam shape can be set. The adjustment takes place as a function of the viscosity of the fluid. The higher the viscosity of the fluid, the greater the required radiant intensity.
  • the beam direction may be more in the direction of the rail 3 than in the direction of the wheel 2. Conversely, the beam direction can also be stronger in the direction of the wheel 2 than in the direction of the rail 3.
  • the beam direction can also be directed centrally on the space between the wheel 2 and the rail 3.
  • the beam shape can be cone-shaped, wherein an opening angle of a fluid cone can be adjusted.
  • the fluid jet may comprise any number of sub-beams.
  • the fluid adheres to the wheel 2 and / or on the rail 3 and forms a sticky surface. As a result, a coefficient of friction between the wheel 2 and the rail 3 is increased. Slipping or sliding of the wheel 2 on the rail 3 is avoided. As a result, the wear on the wheel 2 and on the rail 3 is reduced and increases the reliability.
  • the fluid can include dihydroxyphenylalanine (DOPA), an amino acid that can be derived from a natural mussel adhesive.
  • DOPA dihydroxyphenylalanine
  • the fluid may also include polymers comprising dihydroxyphenylalanine (DOPA) or related groups, eg, nitrodopamine groups.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Machines For Laying And Maintaining Railways (AREA)

Description

Die Erfindung betrifft ein Verfahren zum Erhöhen eines Rad-Schiene-Reibwerts bei einem Schienenfahrzeug, eine Vorrichtung zum Durchführen des Verfahrens und ein Schienenfahrzeug mit der Vorrichtung.The invention relates to a method for increasing a wheel-rail friction coefficient in a rail vehicle, a device for carrying out the method and a rail vehicle with the device.

Zur Verbesserung eines Reibwertes zwischen einem Rad und einer Schiene bei einem Schienenfahrzeug wird heute Sand, in der Regel Kies, an einem führenden Radsatz auf die Schiene gestreut, z.B. bei Schnee, Eis, Regen, Laub, Verschmutzungen oder ähnlichem auf der Schiene. Wenn das Rad über den Sand bzw. Kies hinwegfährt, werden Sand- bzw. Kiesstücke von dem Rad zermahlen und erhöhen den Reibwert zwischen dem Rad und der Schiene.To improve a coefficient of friction between a wheel and a rail in a rail vehicle today sand, usually gravel, is scattered on a rail at a leading wheel set, e.g. on snow, ice, rain, leaves, dirt or similar on the rail. When the wheel passes over the sand or gravel, sand or gravel pieces are ground by the wheel and increase the coefficient of friction between the wheel and the rail.

Das heute gebräuchliche System mit Sand hat folgende prinzipielle Nachteile: Der Sand ist schwer. Es müssen entsprechend große Behälter auf dem Schienenfahrzeug mitgeführt werden. Eine Dosierung des Sandes, ein Ansprechverhalten und ein Nachlaufen nach einer Abschaltung ist nur mit relativ großen Toleranzen möglich. Der Sand muss gut getrocknet sein bzw. im Betrieb weiter getrocknet werden. Rohre für den Sand müssen beheizt werden. Radsätze werden nur von einer Seite mit Sand beaufschlagt, eine Besandung bei einem Fahrtrichtungswechsel ist in der Regel nicht möglich. Eine Befüllung einer Sandungsanlage wird durch eine damit verbundene Staubbildung als gesundheitsgefährdend eingestuft, so dass automatische Befüllanlagen benötigt werden. Es gibt Vorfälle, bei denen das Schienenfahrzeug komplett auf dem Sand zum Stehen kommt und dann quasi elektrisch isoliert auf Schienen stehen bleibt. In diesem Fall werden Gleisstromkreise einer Gleisbesetztmeldung nicht mehr kurzgeschlossen und das Schienenfahrzeug "verschwindet" damit für einen Fahrdienstleiter. Eine derartige Situation wird über betriebliche Weisungen abgemildert.The system used today with sand has the following principal disadvantages: The sand is heavy. Correspondingly large containers must be carried along on the rail vehicle. A dosage of the sand, a response and a run after a shutdown is possible only with relatively large tolerances. The sand must be well dried or dried further during operation. Pipes for the sand need to be heated. Wheels are only exposed to sand from one side, sanding in case of a change of direction is usually not possible. A filling of a sanding plant is classified as harmful by a dust formation associated with it, so that automatic filling systems are needed. There are incidents in which the rail vehicle comes to a complete standstill on the sand and then remains virtually electrically isolated on rails. In this case, track circuits of a track busy message are no longer shorted and the rail vehicle "disappears" with it for a dispatcher. Such a situation is mitigated by company instructions.

Die Druckschrift DE 10 2013 016 881 A1 beschreibt eine Ausbringeinrichtung für einen ersten Reibwertmodifikator, einen zweiten Reibwertmodifikator oder eine Mischung davon. Jeder Reibwertmodifikator kann fest, granular, pastös oder flüssig sein. Die Ausbringeinrichtung ist für ein Schienenfahrzeug vorgesehen. Nachteilig ist hierbei, dass feste, granulare Reibwertmodifikatoren die gleichen Probleme hervorrufen können wie Sand oder Kies. Pastöse oder flüssige Reibwertmodifikatoren können in einem Fahrbetrieb von einer Rad-Schiene-Paarung verdrängt werden oder von einer Radoberfläche bzw. einer Schienenoberfläche abfließen.The publication DE 10 2013 016 881 A1 describes a dispensing device for a first Reibwertmodifikator, a second Reibwertmodifikator or a mixture thereof. Each coefficient of friction modifier can be solid, granular, pasty or liquid. The dispensing device is provided for a rail vehicle. The disadvantage here is that solid, granular Reibwertmodifikatoren can cause the same problems as sand or gravel. Pasty or liquid Reibwertmodifikatoren can be displaced in a driving operation of a wheel-rail pairing or drain from a wheel surface or a rail surface.

Aus dem Zeitungsartikel "Weichtier-Kleber für die Medizin" im "Hennigsdorfer Generalanzeiger" vom 25. April 2012 ist ein Klebematerial bekannt, das aus einem Muschelklebstoff gewonnen wird. Der Muschelklebstoff haftet unter Wasser fest auf nahezu jeder Art von Oberfläche und ist robust. Dazu trägt der Bestandteil Dihydroxyphenylalanin (DOPA) bei, der eine Aminosäure ist. Daraus werden bereits Klebstoffe abgeleitet, die in der Medizin verwendet werden können. Ein Polymerklebstoff mit von DOPA abgeleiteten Nitrodopamin-Gruppen hat außerdem die Eigenschaft, dass er sich unter einer Einstrahlung von Ultraviolettlicht zersetzt. Dadurch wird der Muschelklebstoff wieder ablösbar. Der Muschelklebstoff ist außerdem biokompatibel. Nachteilig ist hierbei, dass außer einer Anwendung in der Medizin noch kein weiterer Anwendungsbereich gefunden wurde.From the newspaper article "mollusc adhesive for medicine" in the "Hennigsdorfer General Anzeiger" of 25 April 2012, an adhesive material is known, which is obtained from a shell adhesive. The clam adhesive sticks firmly under water on almost any kind of surface and is robust. The component dihydroxyphenylalanine (DOPA), which is an amino acid, contributes to this. From this, adhesives are already being derived which can be used in medicine. A polymer adhesive having DOPA-derived nitrodopamine groups also has the property of decomposing under the irradiation of ultraviolet light. As a result, the shell adhesive is removable again. The clam adhesive is also biocompatible. The disadvantage here is that, apart from an application in medicine, no further field of application has yet been found.

Der Erfindung liegt daher die Aufgabe zu Grunde, ein Verfahren und eine Vorrichtung bereit zu stellen, mit denen ein Rad-Schiene-Reibwert erhöht wird, wobei ein verbessertes reibwerterhöhendes Material zum Einsatz kommt.The invention is therefore based on the object to provide a method and an apparatus with which a wheel-rail coefficient of friction is increased, wherein an improved Reibwerterhöhendes material is used.

Diese Aufgabe wird erfindungsgemäß mit einem Verfahren nach Anspruch 1 gelöst. Weiterhin wird die Aufgabe mit einer Vorrichtung nach Anspruch 8 gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen enthalten.This object is achieved by a method according to claim 1. Furthermore, the object is achieved with a device according to claim 8. Advantageous embodiments of the invention are contained in the subclaims.

Erfindungsgemäß besteht die Lösung der Aufgabe in einem Verfahren zum Erhöhen eines Rad-Schiene-Reibwerts bei einem Schienenfahrzeug, wobei mindestens ein Fluid in einer Vorrichtung aus mindestens einem Vorratsbehälter durch mindestens eine Fluidverbindung zu mindestens einer Auslassdüse geleitet wird und in Richtung einer Rad-Schiene-Paarung aus der Auslassdüse ausströmt, wobei mindestens eine Steuerungseinheit mindestens eine Menge des Fluids steuert. Das Fluid haftet an einer Rad-Schiene-Paarung und bildet mindestens eine klebrige Oberfläche, wobei das Fluid eine Aminosäure, z.B. Dihydroxyphenylalanin (DOPA) und/oder eine damit verwandte Aminosäure, z.B. Nitrodopamin, umfasst.According to the invention, the object is achieved in a method for increasing a wheel-rail coefficient of friction in a rail vehicle, wherein at least one fluid in a device is conducted from at least one storage container through at least one fluid connection to at least one outlet nozzle and in the direction of a wheel rail. Pairing out of the outlet nozzle, wherein at least one control unit controls at least an amount of the fluid. The fluid adheres to a wheel-rail mating and forms at least one sticky surface, the fluid containing an amino acid, e.g. Dihydroxyphenylalanine (DOPA) and / or a related amino acid, e.g. Nitrodopamine, includes.

Der Vorteil der erfindungsgemäßen Lösung besteht darin, dass anstelle von Sand ein neuartiges Fluid bzw. eine neuartige newtonsche oder nichtnewtonsche Flüssigkeit zur Reibwerterhöhung eingesetzt wird. Damit werden die Nachteile einer Verwendung von Sand in einer Sandungsanlage vermieden. Das Fluid haftet auf einer Rad-Schiene-Paarung, d.h. auf einem Rad und/oder einer Schiene, und bildet eine klebrige Oberfläche, so dass die Reibung zwischen dem Rad und der Schiene bei einem Abrollen des Rades erhöht wird. Das Fluid wird in einer Vorrichtung aufbewahrt und geführt, die den Vorratsbehälter, die Fluidverbindung und die Auslassdüse umfasst.The advantage of the solution according to the invention is that, instead of sand, a novel fluid or a novel Newtonian or non-Newtonian fluid is used to increase the coefficient of friction. This avoids the disadvantages of using sand in a sanding plant. The fluid adheres to a wheel-rail pairing, ie on a wheel and / or a rail, and forms a sticky surface, so that the friction between the wheel and the rail is increased in a rolling of the wheel. The fluid is stored and guided in a device comprising the reservoir, the fluid connection and the outlet nozzle.

Insbesondere ist das Fluid flüssigkeitsartig oder pastenartig und wird in Richtung der Rad-Schiene-Paarung gespritzt oder gesprüht. Das Fluid kann also eine newtonsche Flüssigkeit oder eine nichtnewtonsche Flüssigkeit sein und als solches besser geführt und dosiert werden als z.B. Sand. Ein Fluidstrahl kann durch Spritzen oder Sprühen gezielt auf die Rad-Schiene-Paarung gerichtet werden.In particular, the fluid is liquid-like or paste-like and is sprayed or sprayed in the direction of the wheel-rail pairing. The fluid may thus be a Newtonian liquid or a non-Newtonian liquid and as such better guided and metered than e.g. Sand. A fluid jet can be directed by spraying or spraying targeted to the wheel-rail pairing.

Vorzugsweise ist das Fluid nach dem Anhaften an der Rad-Schiene-Paarung biologisch abbaubar, insbesondere unter einem Einfluss einer Ultraviolettstrahlung. Auf diese Weise werden Rückstände an dem Rad und/oder der Schiene vermieden. Insbesondere entstehen keine umweltbelastenden Substanzen.Preferably, after adhering to the wheel-rail mating, the fluid is biodegradable, particularly under the influence of ultraviolet radiation. In this way, residues on the wheel and / or the rail are avoided. In particular, no polluting substances.

In einer zweckmäßigen Ausführung der Erfindung umfasst das Fluid mindestens einen weiteren Bestandteil eines Muschelklebers. Diese Art von Aminosäuren ist biologisch abbaubar und wasserresistent und damit auch bei regnerischer oder feuchter Witterung gut verwendbar. Nitrodopamin ist unter dem Einfluss der Ultraviolettstrahlung wiederablösbar.In an expedient embodiment of the invention, the fluid comprises at least one further constituent of a mussel adhesive. This type of amino acid is biodegradable and water resistant and thus well usable even in rainy or humid weather. Nitrodopamine is redeposable under the influence of ultraviolet radiation.

Außerdem kann das Fluid mindestens ein Frostschutzmittel umfassen, das ein Einfrieren des Fluids in der Vorrichtung verhindert. Auf diese Weise ist das Fluid auch bei kalter Witterung gut verwendbar.In addition, the fluid may include at least one antifreeze that prevents freezing of the fluid in the device. In this way, the fluid is well usable even in cold weather.

Beispielsweise kann das Fluid mindestens einen Zusatzstoff umfassen, der ein Festkleben des Fluids in der Vorrichtung verhindert und bei einem Austreten des Fluids aus der Auslassdüse verdunstet. Dadurch werden der Vorratsbehälter, die Fluidleitung und die Auslassdüse vor einem Festsetzen von verfestigtem Fluid geschützt.For example, the fluid may include at least one additive that prevents sticking of the fluid in the device and evaporates upon exit of the fluid from the outlet nozzle. Thereby, the reservoir, the fluid line and the outlet nozzle are protected from solidified fluid settling.

Außerdem kann das Fluid ein spezifisches Gewicht aufweisen, das kleiner ist als das spezifische Gewicht von Sand, insbesondere Kies, und/oder das Fluid kann gesundheitlich unbedenklich sein. Es ist vorteilhaft, wenn das spezifische Gewicht des Fluid kleiner ist als das von Sand, denn dadurch kann ein von einem Schienenfahrzeug mitzuführendes Gewicht verringert werden. Ein gesundheitlich unbedenkliches Fluid ist vorteilhaft für das Wartungspersonal und es kann auf eine aufwendige automatische Befüllung der Vorrichtung verzichtet werden.In addition, the fluid may have a specific gravity which is smaller than the specific gravity of sand, in particular gravel, and / or the fluid may be harmless to health. It is advantageous if the specific gravity of the fluid is smaller than that of sand, because this can be reduced by a rail vehicle mitzuführendes weight. A health-friendly fluid is advantageous for the maintenance personnel and it can be dispensed with a complex automatic filling of the device.

Weiterhin besteht die Lösung der Aufgabe in einer Vorrichtung zum Durchführen des erfindungsgemäßen Verfahrens, bei der der Vorratsbehälter über die Fluidverbindung fluidtechnisch mit der Auslassdüse verbunden ist und die Steuerungseinheit über mindestens eine Betätigungseinrichtung mit der Fluidverbindung in Wirkverbindung steht. Die Auslassdüse umfasst mindestens eine Einstelleinrichtung, mittels derer mindestens eine Eigenschaft mindestens eines Fluidstrahls einstellbar ist.Furthermore, the solution of the problem in an apparatus for performing the method according to the invention, in which the reservoir is fluidly connected via the fluid connection with the outlet nozzle and the control unit is at least one actuator with the fluid connection in operative connection. The outlet nozzle comprises at least one adjusting device, by means of which at least one property of at least one fluid jet is adjustable.

Vorteilhaft ist dabei, dass der Fluidstrahl nach Bedarf eingestellt werden kann. Die Eigenschaft des Fluidstrahls kann dabei eine Größe einer benetzten Fläche auf dem Rad und/oder der Schiene bestimmen. Dadurch kann eine Menge des benötigten Fluids optimiert werden.It is advantageous that the fluid jet can be adjusted as needed. The property of the fluid jet can thereby determine a size of a wetted surface on the wheel and / or the rail. As a result, an amount of the required fluid can be optimized.

Vorzugsweise ist die Eigenschaft des Fluidstrahls mindestens eine Strahlrichtung, mindestens eine Strahlstärke und/oder mindestens eine Strahlform. Die Strahlrichtung und die Strahlstärke können genauer eingestellt werden, als z.B. bei der Verwendung von Sand. Eine Strahlform kann z.B. in Abhängigkeit von der Viskosität des Fluids eingestellt werden.Preferably, the property of the fluid jet is at least one beam direction, at least one beam strength and / or at least one beam shape. The beam direction and the beam strength can be set more accurately than e.g. when using sand. A beam shape may e.g. be adjusted depending on the viscosity of the fluid.

In einer besonderen Ausgestaltung der Erfindung sind zwischen dem Vorratsbehälter und der Auslassdüse mindestens eine Hydraulikpumpe, mindestens eine Wartungseinheit, mindestens ein Rückschlagventil und mindestens ein Absperrhahn angeordnet, wobei die Wartungseinheit vorzugsweise mindestens einen Filter, mindestens einen Abscheider und mindestens eine Druckreduzierung umfasst. Die genannten Bauteile ermöglichen eine gute Handhabung des Fluids innerhalb der Vorrichtung. Der Filter dient zur Reinigung des Fluids und der Abscheider zur Abtrennung von z.B. überschüssigem Wasser aus dem Fluid. Die Druckreduzierung umfasst ein Druckventil das trotz möglicherweise veränderlicher Drücke auf der Eingangsseite dafür sorgt, dass auf der Ausgangsseite ein bestimmter Ausgangsdruck nicht überschritten wird.In a particular embodiment of the invention, at least one hydraulic pump, at least one maintenance unit, at least one check valve and at least one shut-off valve are arranged between the reservoir and the outlet nozzle, the maintenance unit preferably comprising at least one filter, at least one separator and at least one pressure reduction. The components mentioned allow a good handling of the fluid within the device. The filter is for cleaning the fluid and separators for separating e.g. excess water from the fluid. The pressure reduction includes a pressure relief valve, which, despite possibly variable pressures on the inlet side, ensures that a certain outlet pressure is not exceeded on the outlet side.

In einer weiteren Ausgestaltung steht die Betätigungseinrichtung mit mindestens einer Ventileinrichtung in der Fluidverbindung in Wirkverbindung. Die Betätigungseinrichtung dient zusammen mit der Ventileinrichtung zu einer Beeinflussung einer Durchflussmenge bzw. einer Dosierung des Fluids und kann manuell oder mittels der Steuerungseinheit automatisch betätigt werden.In a further embodiment, the actuating device is in operative connection with at least one valve device in the fluid connection. The actuating device together with the valve device serves to influence a flow rate or a metering of the fluid and can be actuated automatically or manually by means of the control unit.

In einer vorteilhaften Weiterbildung der Erfindung sind mindestens eine erste Fluidzuleitung und mindestens eine zweite Fluidzuleitung in einer Fahrtrichtung des Schienenfahrzeugs auf gegenüberliegenden Seiten eines Rades angeordnet, und mittels mindestens einer Fahrtrichtungsumschaltung ist die zur jeweils aktuellen Fahrtrichtung gehörige Fluidzuleitung aktivierbar. Vorteilhaft ist dabei, dass die Rad-Schiene-Paarung in beiden Fahrtrichtungen des Schienenfahrzeugs von dem Fluid benetzt werden kann.In an advantageous development of the invention, at least one first fluid supply line and at least one second fluid supply line are arranged on opposite sides of a wheel in one direction of travel of the rail vehicle, and by means of at least one direction of travel switching, the fluid supply line belonging to the respective current travel direction can be activated. It is advantageous that the wheel-rail pairing can be wetted in both directions of travel of the rail vehicle of the fluid.

Erfindungsgemäß weist die Vorrichtung mindestens eine mit dem Fluid in Kontakt kommende Oberflächenstruktur auf, die ein Festkleben des Fluids an der Oberflächenstruktur verhindert, wobei die Oberflächenstruktur insbesondere einen Lotos-Effekt aufweist. Als Lotos-Effekt wird die geringe Benetzbarkeit einer Oberfläche bezeichnet, wie sie bei einer Lotospflanzenoberfläche beobachtet werden kann, die eine besondere Oberflächenstruktur aufweist. Entsprechend perlen Flüssigkeiten auf Oberflächenstrukturen ab, die technische Nachahmungen der natürlichen Oberflächenstrukturen der Lotospflanze darstellen. Oberflächenstrukturen mit geringer Benetzbarkeit werden auch als hydrophobe Oberflächen bezeichnet. Es ist wichtig, dass ein Festkleben des Fluids an der Oberflächenstruktur in der Vorrichtung verhindert wird, weil damit Verstopfungen und/oder Verengungen in der Vorrichtung vermieden werden können.According to the invention, the device has at least one surface structure coming into contact with the fluid, which prevents sticking of the fluid to the surface structure, wherein the surface structure has, in particular, a lotus effect. The lotus effect refers to the low wettability of a surface, as can be observed in a lotus plant surface, which has a special surface structure. Accordingly, liquids emit surface structures that are technical imitations of the natural surface structures of the lotus plant. Low wettability surface structures are also referred to as hydrophobic surfaces. It is important that sticking of the fluid to the surface structure in the device be prevented because it can prevent blockages and / or constrictions in the device.

Zweckmäßig kann die Vorrichtung beheizbar und/oder kühlbar sein. Dadurch kann die Vorrichtung sowohl bei kalten als auch bei warmen Umgebungstemperaturen betrieben werden. Beansprucht wird außerdem ein Schienenfahrzeug mit der erfindungsgemäßen Vorrichtung.Suitably, the device can be heated and / or cooled. As a result, the device can be operated both in cold and in warm ambient temperatures. Also claimed is a rail vehicle with the device according to the invention.

Im Folgenden wird ein Ausführungsbeispiel der Erfindung anhand von einer einzigen Figur näher erläutert.In the following an embodiment of the invention will be explained in more detail with reference to a single figure.

Die Figur zeigt einen schematischen Aufbau einer erfindungsgemäßen Vorrichtung.The figure shows a schematic structure of a device according to the invention.

In der einzigen Figur sind die erfindungsgemäße Vorrichtung 1 und zwei Räder 2 eines ansonsten nicht weiter dargestellten Schienenfahrzeugs dargestellt. Die Räder 2 bewegen sich auf einer Schiene bzw. Fahrschiene 3.In the single figure, the device 1 according to the invention and two wheels 2 of a rail vehicle otherwise not shown are shown. The wheels 2 move on a rail or running rail 3.

Die Vorrichtung 1 umfasst fluidtechnische Komponenten, die in einer vorgegebenen Reihenfolge entlang einer Fluidverbindung bzw. einer Fluidleitung 5 angeordnet sind. Die Fluidverbindung kann mindestens ein Rohr und/oder mindestens einen Schlauch umfassen. Die Fluidverbindung 5 beginnt an einem Vorratsbehälter 4 für das Fluid und verläuft weiter zu einer an das Fluid angepassten Hydraulikpumpe 6. Im weiteren Verlauf der Fluidverbindung 5 ist eine Wartungseinheit 7 mit einem Filter 7a, einem Abscheider 7b und einer Druckreduzierung 7c angeordnet. Hinter der Wartungseinheit 7 führt die Fluidverbindung 5 zu einem Rückschlagventil 9 und darauf folgend zu einem Absperrhahn 10. Zwischen der Wartungseinheit 7 und dem Rückschlagventil 9 ist eine Steuerungseinheit 8 mit einer Betätigungseinrichtung 8a angeordnet. Die Steuerungseinheit 8 ist über eine Steuerleitung 8b mit der Betätigungseinrichtung 8a verbunden. Die Betätigungseinrichtung 8a ist mit einer Ventileinrichtung 8c in der Fluidverbindung 5 verbunden.The device 1 comprises fluid power components which are arranged in a predetermined sequence along a fluid connection or a fluid line 5. The fluid connection may comprise at least one tube and / or at least one tube. The fluid connection 5 starts at a reservoir 4 for the fluid and continues to a hydraulic pump 6 adapted to the fluid. In the further course of the fluid connection 5, a maintenance unit 7 with a filter 7a, a separator 7b and a pressure reduction 7c is arranged. Behind the maintenance unit 7, the fluid connection 5 leads to a check valve 9 and subsequently to a shut-off valve 10. Between the maintenance unit 7 and the check valve 9, a control unit 8 is arranged with an actuating device 8a. The control unit 8 is connected to the actuator 8a via a control line 8b. The actuator 8a is connected to a valve device 8c in the fluid connection 5.

Die Fluidverbindung 5 verbindet weiterhin den Absperrhahn 10 mit einer Fahrtrichtungsumschaltung 11, die die Fluidverbindung 5 in eine erste Fluidzuleitung 11a und eine zweite Fluidzuleitung 11b aufteilt. Die erste Fluidzuleitung 11a führt zu den Rädern 2 und der Schiene 3 und ist einer ersten Fahrtrichtung x1 des Schienenfahrzeugs entgegengerichtet. Die zweite Fluidzuleitung 11b führt zu den Rädern 2 und der Schiene 3 und ist einer zweiten Fahrtrichtung x2 des Schienenfahrzeugs entgegengerichtet.The fluid connection 5 further connects the shut-off valve 10 with a direction of travel switching 11, which divides the fluid connection 5 into a first fluid supply line 11a and a second fluid supply line 11b. The first fluid supply line 11a leads to the wheels 2 and the rail 3 and is opposite to a first direction of travel x1 of the rail vehicle. The second fluid supply line 11b leads to the wheels 2 and the rail 3 and is opposite to a second direction of travel x2 of the rail vehicle.

Die erste Fluidzuleitung 11a und die zweite Fluidzuleitung 11b weisen gemäß der Figur jeweils eine Verzweigung für zwei Räder 2 auf, können aber auch Verzweigungen für mehr als zwei Räder 2 aufweisen. Alternativ können die erste Fluidzuleitung 11a und die zweite Fluidzuleitung 11b jeweils unverzweigt und jeweils nur für ein Rad 2 vorgesehen sein. An jedem Ende einer ersten Fluidzuleitung 11a und einer zweiten Fluidzuleitung 11b ist eine Auslassdüse 12 angeordnet. Die Auslassdüse 12 umfasst eine in der Figur nicht dargestellte Einstelleinrichtung für einen aus der Auslassdüse austretenden, in der Figur nicht dargestellten Fluidstrahl.According to the figure, the first fluid supply line 11a and the second fluid supply line 11b each have a branch for two wheels 2, but may also have branches for more than two wheels 2. Alternatively, the first fluid supply line 11a and the second fluid supply line 11b may each be provided unbranched and in each case only for one wheel 2. At each end of a first fluid supply line 11a and a second fluid supply line 11b, an outlet nozzle 12 is arranged. The outlet nozzle 12 comprises an adjusting device, not shown in the figure, for a fluid jet emerging from the outlet nozzle and not shown in the figure.

Im Betrieb wird das Fluid in dem Vorratsbehälter 4 aufbewahrt und mittels der Hydraulikpumpe 6 aus dem Vorratsbehälter 4 herausgepumpt. In der Wartungseinheit 7 wird das Fluid mittels des Filters 7a von Verunreinigungen befreit. Im Abscheider 7b wird z.B. überschüssiges Wasser aus dem Fluid abgetrennt. Die Druckreduzierung 7c umfasst ein Druckventil das trotz möglicherweise veränderlicher Drücke auf der Eingangsseite des Druckventils dafür sorgt, dass auf der Ausgangsseite des Druckventils ein bestimmter Ausgangsdruck nicht überschritten wird.In operation, the fluid is stored in the reservoir 4 and pumped out by means of the hydraulic pump 6 from the reservoir 4. In the maintenance unit 7, the fluid is removed from the impurities by means of the filter 7a. In the separator 7b, for example, excess water is separated from the fluid. The pressure reduction 7c comprises a pressure valve which, despite possibly variable pressures on the inlet side of the pressure valve, ensures that a certain outlet pressure is not exceeded on the outlet side of the pressure valve.

Die Steuereinheit 8 steuert über eine Steuerleitung 8b die Betätigungseinrichtung 8a in Abhängigkeit von vorgegebenen Parametern, z.B. einem Gleiten eines Rades 2 auf der Schiene 3. Die Betätigungseinrichtung 8a kann aber auch manuell betätigt werden. Die Betätigungseinrichtung 8a betätigt die Ventileinrichtung 8c zur Einstellung der Durchflussmenge des Fluids in der Fluidverbindung.The control unit 8 controls the actuator 8a via a control line 8b in response to predetermined parameters, e.g. a sliding of a wheel 2 on the rail 3. The actuator 8a can also be operated manually. The actuator 8a actuates the valve means 8c for adjusting the flow rate of the fluid in the fluid connection.

Das Rückschlagventil 9 verhindert eine Rückströmung des Fluids in der Fluidverbindung 5. Mittels des Absperrhahnes 10 kann die Fluidverbindung 5 abgesperrt werden, z.B. wenn das Schienenfahrzeug nicht in Betrieb ist.The check valve 9 prevents backflow of the fluid in the fluid connection 5. By means of the stopcock 10, the fluid connection 5 can be shut off, e.g. when the rail vehicle is not in operation.

Die Fahrtrichtungsumschaltung 11 ermöglicht einen Betrieb der Vorrichtung 1 in einer ersten Fahrtrichtung x1 und einer zweiten Fahrtrichtung x2 des Schienenfahrzeugs. Wenn das Schienenfahrzeug in der Fahrtrichtung x1 betrieben wird, wird die erste Fluidzuleitung 11a geöffnet und die zweite Fluidzuleitung 11b gesperrt. Dadurch wird das Fluid entgegen der ersten Fahrtrichtung x1 zu den Rädern 2 bzw. der Schiene 3 geleitet, wobei die Räder in der ersten Fahrtrichtung x1 abrollen. Wenn das Schienenfahrzeug in der Fahrtrichtung x2 betrieben wird, wird die zweite Fluidzuleitung 11b geöffnet und die erste Fluidzuleitung 11a gesperrt. Dadurch wird das Fluid entgegen der zweiten Fahrtrichtung x2 zu den Rädern 2 bzw. der Schiene 3 geleitet, wobei die Räder 2 in der zweiten Fahrtrichtung x2 abrollen.The direction of travel switching 11 allows operation of the device 1 in a first direction of travel x1 and a second direction of travel x2 of the rail vehicle. When the rail vehicle is operated in the traveling direction x1, the first fluid supply line 11a is opened and the second fluid supply line 11b is blocked. As a result, the fluid is directed counter to the first direction of travel x1 to the wheels 2 or the rail 3, wherein the wheels roll in the first direction of travel x1. When the rail vehicle is operated in the traveling direction x2, the second fluid supply line 11b is opened and the first fluid supply line 11a is blocked. As a result, the fluid is directed counter to the second direction of travel x2 to the wheels 2 or the rail 3, wherein the wheels 2 roll in the second direction of travel x2.

Alternativ kann die Fahrtrichtungsumschaltung 10 entfallen. Stattdessen kann für die erste Fahrtrichtung x1 und die zweite Fahrtrichtung x2 jeweils eine eigene Vorrichtung 1 vorhanden sein.Alternatively, the direction of travel switching 10 can be omitted. Instead, for the first direction of travel x1 and the second direction of travel x2 each have their own device 1 may be present.

An jeder Auslassdüse 12 wird der Fluidstrahl mit Hilfe der Einstelleinrichtung eingestellt. Wenn das Fluid eine newtonsche Flüssigkeit ist, kann es gesprüht oder gespritzt werden. Wenn das Fluid eine nichtnewtonsche Flüssigkeit ist, kann es gespritzt werden. Es können eine Strahlrichtung, eine Strahlstärke und eine Strahlform eingestellt werden. Die Einstellung erfolgt in Abhängigkeit von der Viskosität des Fluids. Je höher die Viskosität des Fluids ist, desto größer ist auch die erforderliche Strahlstärke. Die Strahlrichtung kann z.B. stärker in Richtung der Schiene 3 als in Richtung des Rads 2 liegen. Umgekehrt kann die Strahlrichtung auch stärker in Richtung des Rades 2 als in Richtung der Schiene 3 liegen. Die Strahlrichtung kann auch mittig auf den Zwischenraum zwischen dem Rad 2 und der Schiene 3 gerichtet sein. Die Strahlform kann kegelförmig sein, wobei ein Öffnungswinkel eines Fluidkegels eingestellt werden kann. Wenn der Fluidstrahl konzentriert ist, d.h. eine zylindrische Form aufweist, wird eine kleinere Fläche benetzt als wenn der Fluidstrahl kegelförmig aufgefächert ist. Der Fluidstrahl kann eine beliebige Anzahl von Teilstrahlen umfassen.At each outlet nozzle 12, the fluid jet is adjusted by means of the adjusting device. If the fluid is a Newtonian liquid, it can be sprayed or sprayed. If the fluid is a non-Newtonian fluid, it can be injected. A beam direction, a beam strength and a beam shape can be set. The adjustment takes place as a function of the viscosity of the fluid. The higher the viscosity of the fluid, the greater the required radiant intensity. For example, the beam direction may be more in the direction of the rail 3 than in the direction of the wheel 2. Conversely, the beam direction can also be stronger in the direction of the wheel 2 than in the direction of the rail 3. The beam direction can also be directed centrally on the space between the wheel 2 and the rail 3. The beam shape can be cone-shaped, wherein an opening angle of a fluid cone can be adjusted. When the fluid jet is concentrated, ie, has a cylindrical shape, a smaller area is wetted than when the fluid jet is fan-shaped. The fluid jet may comprise any number of sub-beams.

Das Fluid haftet auf dem Rad 2 und/oder auf der Schiene 3 und bildet eine klebrige Oberfläche. Dadurch wird ein Reibwert zwischen dem Rad 2 und der Schiene 3 erhöht. Ein Durchrutschen oder Gleiten des Rades 2 auf der Schiene 3 wird vermieden. Dadurch wird der Verschleiß am Rad 2 und an der Schiene 3 vermindert und die Betriebssicherheit erhöht. Das Fluid kann Dihydroxyphenylalanin (DOPA) umfassen, eine Aminosäure, die aus einem natürlichen Muschelklebstoff gewonnen werden kann. Das Fluid kann auch Polymere umfassen, die Dihydroxyphenylalanin (DOPA) oder verwandte Gruppen, z.B. Nitrodopamin-Gruppen, aufweisen.The fluid adheres to the wheel 2 and / or on the rail 3 and forms a sticky surface. As a result, a coefficient of friction between the wheel 2 and the rail 3 is increased. Slipping or sliding of the wheel 2 on the rail 3 is avoided. As a result, the wear on the wheel 2 and on the rail 3 is reduced and increases the reliability. The fluid can include dihydroxyphenylalanine (DOPA), an amino acid that can be derived from a natural mussel adhesive. The fluid may also include polymers comprising dihydroxyphenylalanine (DOPA) or related groups, eg, nitrodopamine groups.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Vorrichtungdevice
22
Radwheel
33
Schienerail
44
Vorratsbehälterreservoir
55
Fluidverbindungfluid communication
66
Hydraulikpumpehydraulic pump
77
Wartungseinheitmaintenance unit
7a7a
Filterfilter
7b7b
Abscheiderseparators
7c7c
Druckreduzierungpressure reduction
88th
Steuerungseinheitcontrol unit
8a8a
Betätigungseinrichtungactuator
8b8b
Steuerleitungcontrol line
8c8c
Ventileinrichtungvalve means
99
Rückschlagventilcheck valve
1010
Absperrhahnstopcock
1111
FahrtrichtungsumschaltungMounted unit
11a11a
Erste FluidzuleitungFirst fluid supply line
11b11b
Zweite FluidzuleitungSecond fluid supply line
1212
Auslassdüseoutlet nozzle
x1x1
Erste FahrtrichtungFirst direction of travel
x2x2
Zweite FahrtrichtungSecond direction

Claims (14)

  1. Method for increasing a wheel-rail coefficient of friction in a rail vehicle, wherein at least one fluid is channelled in an apparatus (1) from at least one storage tank (4) through at least one fluid connection (5) to at least one outlet nozzle (12) and flows out of the outlet nozzle (12) in the direction of a wheel-rail pairing (2, 3), wherein at least one control unit (8) controls at least one quantity of the fluid, characterized in that the fluid adheres to a wheel-rail pairing (2, 3) and forms at least one tacky surface, wherein the fluid comprises an amino acid dihydroxyphenylalanine (DOPA) and/or a related thereto amino acid nitrodopamine.
  2. Method according to Claim 1, characterized in that the fluid is liquid-like or paste-like and is squirted or sprayed in the direction of the wheel-rail pairing (2, 3).
  3. Method according to Claim 1 or 2, characterized in that the fluid is biodegradable, in particular under the influence of an ultraviolet radiation, after adhering to the wheel-rail pairing (2, 3).
  4. Method according to one of Claims 1 to 3, characterized in that the fluid comprises at least one further constituent part of a mussel adhesive.
  5. Method according to one of Claims 1 to 4, characterized in that the fluid comprises at least one antifreeze agent which prevents freezing of the fluid in the apparatus.
  6. Method according to one of Claims 1 to 5, characterized in that the fluid comprises at least one additive which prevents sticking of the fluid in the apparatus and evaporates upon exit of the fluid from the outlet nozzle.
  7. Method according to one of Claims 1 to 6, characterized in that the fluid has a specific density which is less than the specific density of sand, in particular gravel, and/or in that the fluid is harmless to health.
  8. Apparatus (1) for carrying out a method according to one of Claims 1 to 7, in which the storage tank (4) is fluidically connected to the outlet nozzle (12) via the fluid connection (5), and the control unit (8) is in operative connection with the fluid connection (5) via at least one actuating device (8a), characterized in that the outlet nozzle (12) comprises at least one setting device by means of which at least one property of at least one fluid jet can be set, and in that the apparatus (1) has at least one surface structure which comes into contact with the fluid and which prevents sticking of the fluid on the surface structure, wherein the surface structure has a lotus effect in which the surface structure constitutes a technical imitation of the natural surface structure of the lotus plant.
  9. Apparatus (1) according to Claim 8, characterized in that the property of the fluid jet comprises at least one jet direction, at least one jet intensity and/or at least one jet shape.
  10. Apparatus (1) according to Claim 8 or 9, characterized in that at least one hydraulic pump (6), at least one maintenance unit (7), at least one non-return valve (9) and at least one shut-off valve (10) are arranged between the storage tank (4) and the outlet nozzle (12), wherein the maintenance unit (7) preferably comprises at least one filter (7a), at least one separator (7b) and/or at least one pressure reducer (7c).
  11. Apparatus according to one of Claims 8 to 10, characterized in that the actuating device (8a) is in operative connection with at least one valve device (8c) in the fluid connection (5).
  12. Apparatus (1) according to one of Claims 8 to 11, characterized in that at least one fluid supply line (11a) and at least one second fluid supply line (11b) are arranged on opposite sides of a wheel (2) in a direction of travel (x1, x2) of the rail vehicle, and the fluid supply line (11a, 11b) belonging to the respectively current direction of travel (x1, x2) can be activated by means of at least one direction of travel switchover unit (11) .
  13. Apparatus (1) according to one of Claims 8 to 12, characterized in that the apparatus (1) can be heated and/or cooled.
  14. Rail vehicle having an apparatus (1) according to one of Claims 8 to 13.
EP17183568.9A 2016-07-29 2017-07-27 Method for lifting a wheel rail friction coefficient in a rail vehicle Not-in-force EP3275759B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016114108.9A DE102016114108A1 (en) 2016-07-29 2016-07-29 Method for increasing a wheel-rail coefficient of friction in a rail vehicle

Publications (2)

Publication Number Publication Date
EP3275759A1 EP3275759A1 (en) 2018-01-31
EP3275759B1 true EP3275759B1 (en) 2019-05-15

Family

ID=59485219

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17183568.9A Not-in-force EP3275759B1 (en) 2016-07-29 2017-07-27 Method for lifting a wheel rail friction coefficient in a rail vehicle

Country Status (2)

Country Link
EP (1) EP3275759B1 (en)
DE (1) DE102016114108A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110126853A (en) * 2019-05-30 2019-08-16 山东创享智能科技有限公司 A kind of railway locomotive stucco intelligent monitoring diagnosis system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018202365A1 (en) * 2018-02-15 2019-08-22 Siemens Aktiengesellschaft Control gear system for traction reinforcement of rail vehicles

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE581400C (en) * 1933-07-26 Fritz Fuchs Dr Anti-skid protection for motor vehicles
DE581545C (en) * 1932-09-13 1933-07-29 Walter Josky Method of preventing the rubber tires of motor vehicles from sliding
DE20302664U1 (en) * 2003-02-19 2003-04-17 Hübner, Burkhard, Dipl.-Ing. (FH), 12524 Berlin Wheel grip spray for motor vehicle has duct to spray grit in front of wheels on slippery road surfaces
JP2004156045A (en) * 2003-12-22 2004-06-03 Hitachi Chem Co Ltd Friction material
DE102005059058A1 (en) * 2005-12-08 2007-06-14 Beiersdorf Ag Acrylic adhesive with waterproof adhesive properties
DE102006037658A1 (en) * 2006-08-11 2008-02-14 Bayerische Motoren Werke Ag Unit increasing friction between vehicle tire and road, distributes adhesive- or solvent on tire, under control of measurement equipment on vehicle
DE102008057684A1 (en) * 2008-11-17 2010-05-20 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Dialkoxy- or dihydroxyphenyl radicals containing silanes, adhesives prepared therefrom and methods for preparing the silanes and the adhesives
WO2010136960A2 (en) * 2009-05-26 2010-12-02 University Of Kwazulu-Natal Traction enhancement system
ITPN20120028A1 (en) * 2012-06-01 2013-12-02 Giovanni Amos Blandina DEVICE FOR AVOIDING THE AQUAPLANING PHENOMENON IN A VEHICLE
DE102013016881A1 (en) 2013-10-11 2015-04-16 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Dispensing device for Reibwertmodifikatoren for a rail vehicle

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110126853A (en) * 2019-05-30 2019-08-16 山东创享智能科技有限公司 A kind of railway locomotive stucco intelligent monitoring diagnosis system

Also Published As

Publication number Publication date
EP3275759A1 (en) 2018-01-31
DE102016114108A1 (en) 2018-02-01

Similar Documents

Publication Publication Date Title
DE102009059118A1 (en) Wiper system and method for operating a wiper system for a motor vehicle
EP1890823A1 (en) Spray nozzle, spray device and the operation method thereof
EP3962669B1 (en) Cleaning device for applying a media pulse to a surface according to the venturi principle, compressed-air system, cleaning method, control system and vehicle
EP3275759B1 (en) Method for lifting a wheel rail friction coefficient in a rail vehicle
DE4414520C1 (en) Method and device for de-icing roadways using reused thawing solutions
EP1825749A1 (en) Agricultural field spraying device
DE102004034270B4 (en) Plant for discharging flowable fluids, in particular paints and varnishes and method for operating the system
EP1312419B1 (en) Apparatus and method for cleaning floor gratings in paint booths
DE102007049030A1 (en) Movable machine for cleaning street surfaces has a longitudinal center axis, a front end fitted at the front along the longitudinal center axis in the machine's direction of movement and a rear opposite this direction
EP3828342B1 (en) Soil compactor
DE202017101056U1 (en) Spreader for winter service vehicles
DE102016217979A1 (en) Vehicle-side emptying device for filling lines
DE202007018971U1 (en) Road surface repair facility for repair of road surfaces
EP2832222B1 (en) Agricultural field spraying device
DE3227216C2 (en) Vacuum tanker with distribution device for the areal distribution of media such as liquid manure
WO2017207093A1 (en) Pig for applying a liquid
EP2537985A1 (en) Nozzle for releasing brine
DE102022000978A1 (en) Slurry spreading device (1) for slurry vehicles with at least one transverse distribution pipe (8) and hose pumps (10) attached to it for pumping out and dosing the slurry.
EP2698060B1 (en) Agricultural field spraying device
DE202019100840U1 (en) Sampling device for dust and bulk materials
DE1301356B (en) Procedure for spraying liquids
DE102018215794A1 (en) Spray system for applying a liquid spray medium, agricultural vehicle
DE202019003850U1 (en) Device for filling at least one vehicle
AT250874B (en) Process for the hydromechanical clearing of long sand traps in sewage treatment plants and equipment for its implementation
EP1800527A1 (en) Apparatus for spreading granular substances

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20180621

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20181129

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502017001308

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: TR-IP CONSULTING LLC, CH

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20190515

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190515

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190815

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190515

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190515

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190515

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190515

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190515

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190915

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190515

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20190918

Year of fee payment: 3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190515

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190515

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190816

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190815

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190515

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190515

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190515

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190515

REG Reference to a national code

Ref country code: CH

Ref legal event code: PCAR

Free format text: NEW ADDRESS: ROUTE DU COUTSET 18, 1485 NUVILLY (CH)

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502017001308

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190515

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190515

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190515

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190515

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20190731

26N No opposition filed

Effective date: 20200218

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190515

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190515

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190731

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190727

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190727

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20200721

Year of fee payment: 4

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502017001308

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190515

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210202

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190515

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190915

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190515

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20170727

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20210727

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210731

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210727

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190515

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 1133082

Country of ref document: AT

Kind code of ref document: T

Effective date: 20220727

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220727