WO2009056306A1 - Valve arrangement for controlling a brake system of a parking brake system of a track vehicle - Google Patents

Valve arrangement for controlling a brake system of a parking brake system of a track vehicle Download PDF

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Publication number
WO2009056306A1
WO2009056306A1 PCT/EP2008/009153 EP2008009153W WO2009056306A1 WO 2009056306 A1 WO2009056306 A1 WO 2009056306A1 EP 2008009153 W EP2008009153 W EP 2008009153W WO 2009056306 A1 WO2009056306 A1 WO 2009056306A1
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WO
WIPO (PCT)
Prior art keywords
pressure
valve
brake cylinder
spring brake
solenoid valve
Prior art date
Application number
PCT/EP2008/009153
Other languages
German (de)
French (fr)
Inventor
Sebastian Louca
Original Assignee
Knorr-Bremse Systeme für Schienenfahrzeuge 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 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH filed Critical Knorr-Bremse Systeme für Schienenfahrzeuge GmbH
Publication of WO2009056306A1 publication Critical patent/WO2009056306A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
    • B60T13/26—Compressed-air systems
    • B60T13/266—Systems with both direct and indirect application, e.g. in railway vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/66—Electrical control in fluid-pressure brake systems
    • B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
    • B60T13/683—Electrical control in fluid-pressure brake systems by electrically-controlled valves in pneumatic systems or parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/08—Brake cylinders other than ultimate actuators

Definitions

  • Valve arrangement for controlling a brake system of a parking brake system of a rail vehicle
  • the invention is based on a valve arrangement for controlling a parking brake system of a rail vehicle or a rail vehicle train containing at least one spring brake cylinder, with at least one pressure sensor for generating a pressure signal dependent on the pressure in the spring brake cylinder or a pressure derived therefrom, according to the preamble of claim 1.
  • parking brake systems of rail vehicles usually use spring brake cylinders, which include a supported against a storage spring spring accumulator piston, wherein the spring brake is a passive brake in which the spring brake cylinder is ventilated to release and vented for application.
  • a known valve arrangement for controlling a parking brake system of a rail vehicle which includes at least one spring brake cylinder
  • compressed air passes through a pressure reducing valve into the valve device, which is controlled by an operator and aerates or bleeds the spring brake cylinder.
  • the pressure sensor is used via the pressure measurement in the spring brake cylinder to detect whether the parking brake is applied or released. Since the compressed air for the parking brake usually comes from the looped by the Schienenindustrialzug main air reservoir line, which is under a pressure of 10 bar (10 x 10 5 Pa) and not all spring brake cylinders are designed for such a high pressure, the pressure reducing valve to Pressure reduction of Pressure to a given maximum pressure.
  • such pressure reducing or pressure control valves require a certain manufacturing and assembly costs.
  • the invention is based on the object to further develop a valve assembly of the type mentioned in such a way that it is cheaper and simpler.
  • At least one solenoid valve is provided, which is electrically controlled as a function of the pressure signal of the pressure sensor such that the pressure in the spring brake cylinder is limited to a predetermined maximum pressure.
  • the pressure sensor in conjunction with the at least one solenoid valve ensures that the pressure in the spring-loaded cylinder does not exceed the predetermined maximum pressure. Then can be dispensed with the pressure reducing valve of the prior art, which brings a certain manufacturing and assembly costs savings.
  • a further controlled by an operable by an operator parking brake operating device valve means for increasing the pressure, pressure holding and pressure lowering of the pressure in the spring brake cylinder wherein the valve means includes a pulse valve.
  • the at least one solenoid valve of the valve egg ni direction Viewed from a pressure medium source, the at least one solenoid valve of the valve egg ni direction, for example, upstream. In this case, this is controlled depending on the pressure signal of the pressure sensor Solenoid valve excluding the pressure limit of the pressure in the spring brake cylinder, while the operation of the spring brake by pressure increase, pressure hold and pressure lowering via the valve device or the pulse valve.
  • At least one inlet solenoid valve for venting the spring brake cylinder and at least one outlet valve for venting the spring brake cylinder is provided, wherein the inlet solenoid valve is electrically controlled depending on the pressure signal of the pressure sensor, that the pressure in the spring brake cylinder is limited to the predetermined maximum pressure , Furthermore, the inlet solenoid valve and the outlet solenoid valve for pressure increase, pressure holding and pressure lowering in the spring brake cylinder of a
  • Parking brake operating device controlled by an operator.
  • the inlet solenoid valve performs a dual function by on the one hand ensures the pressure limit in the spring brake cylinder and the other is also responsible for the ventilation of the same.
  • FIG. 1 shows a schematic circuit diagram of a valve arrangement according to a preferred embodiment of the invention
  • FIG. 2 shows a schematic circuit diagram of a valve arrangement according to a further embodiment.
  • Valve assembly 1 for controlling a at least one spring brake cylinder-containing parking brake system of a rail vehicle or a Schienentechzugs is drawn for reasons of scale only leading to the spring brake cylinder pressure line 2, but not the spring brake cylinder itself, the structure and function is well known and should therefore not be further described here.
  • a pressure sensor or pressure switch 4 is arranged, which measures the pressure prevailing in the leading to the spring brake cylinder pressure line 2 pressure and dependent generates, for example, an electrical pressure signal.
  • the pressure signal is controlled via a preferably electrical signal line 6 in a preferably electronic control unit 8 of a solenoid valve 10.
  • the solenoid valve 10 is also connected in the pressure line 2 and serves to limit the pressure in the spring brake cylinder.
  • the solenoid valve 10 is a 2/2-way solenoid valve, with a passage position and a blocking position, which is controlled by the control unit 8 via a control line 12.
  • a valve device 14 is connected in the pressure line 2 and designed to increase the pressure, pressure holding and pressure lowering of the pressure in the spring brake cylinder, for example, as an electromagnetic, by another electronic control unit 16 via a further control line 18 electrically controllable pulse valve.
  • the further control unit 16 is controlled by a preferably not shown parking brake control device by a preferably electrical control line 20.
  • a preferably electrical control line 20 About the parking brake control device, an operator, such as a driver of the rail vehicle or Schienentechzugs enter control commands, which are implemented by the control unit 16 in a 14 effected by the valve means Drucksteigem, maintaining pressure or lowering the pressure in the pressure line 2.
  • the pressure line 2 is connected to a looped by the rail vehicle or by the rail vehicle train main air reservoir line 22, which, for example, a pressure of 10 bar (10 x 10 5 Pa) leads.
  • the pressure line 2 therefore includes a portion 24 upstream of the solenoid valve 10, which is under the pressure of the main air reservoir line 22 and a portion 26 downstream of the solenoid valve 10 with the valve device 14.
  • a throttle 28 is provided in the portion 26 downstream of the solenoid valve 10, more precisely between the valve device 14 and the Pressure sensor 4, a throttle 28 is provided.
  • the solenoid valve 10 is controlled depending on the pressure signal of the pressure sensor 4 by the control unit 8 so that the pressure in the solenoid valve 10 downstream portion 26 of the pressure line 2 or in the spring brake cylinder is limited or adjusted to a predetermined maximum pressure.
  • a limitation or regulation can be realized for example by a corresponding logic circuit in the control unit 8.
  • a corresponding signal is input via the parking brake operating device, which controls the control device 16 via the further control line 20, which in turn controls the pulse valve 14, which is then switched to vent the spring brake cylinder in forward position.
  • the solenoid valve 10 is also connected in the passage position.
  • the pulse valve 14 is in his Deactivated ventilation position, whereby the spring brake cylinder is vented and thus clamped.
  • the further control unit 16 and thus the valve device 14 and the pulse valve are controlled by the parking brake operating device by an operator such that the pressure in the spring brake cylinder can be increased, maintained or lowered.
  • the upstream solenoid valve 10 is controlled by the control unit 8 and the pressure signals of the pressure sensor 4 so that the pressure in the spring brake cylinder is limited to a maximum pressure.
  • the inlet solenoid valve 10a performs a dual function by on the one hand provides for the pressure limit in the spring brake cylinder and on the other hand is responsible for the ventilation of the same.
  • the inlet solenoid valve 10a is actuated via the control line 12 from the control unit 8, which in turn receives the pressure signals from the pressure sensor 4 via the signal line 6.
  • the inlet solenoid valve 10a and the outlet solenoid valve 10b are controllable via a further control line 20 and the control unit 8 from the parking brake operating device by the operator.
  • the inlet solenoid valve 10a and the outlet solenoid valve 10b can perform the functions of increasing pressure, Pressure maintenance and pressure lowering in the spring brake cylinder realize.
  • intake and exhaust solenoid valves 10a, 10b are each formed as 2/2 way solenoid valves, with one port of the inlet solenoid valve 10a connected to the main air tank passage 22 and another port of the inlet solenoid valve 10a connected to the pressure line 2, while one port of the Outlet solenoid valve 10b with the pressure line 2 and another port of the outlet solenoid valve 10b with a vent or pressure sink is in communication.
  • Main air reservoir line 22 is controlled to the spring brake cylinder. Then, when the predetermined maximum pressure is reached during venting and the pressure sensor 4 sends a corresponding signal to the control unit 8, the inlet solenoid valve 10a switches to its blocking position in which the compressed air connection between the main air reservoir line and the spring brake cylinder is interrupted. As a result, a return flow of compressed air from the spring brake cylinder and a subsequent flow from the main air reservoir line 22 is avoided.
  • the inlet solenoid valve 10a is switched to its blocking position and the outlet solenoid valve 10b in its venting position, whereby the spring brake cylinder is brought into connection with the vent, whereby the pressure in the spring brake cylinder drops.
  • the solenoid valves 10, 10a, 10b could also be controlled purely pneumatically.
  • the pressure sensor 4 generates a pneumatic pressure signal, which is then fed through the then pneumatic line 6 to the control unit 8, which includes a pneumatic logic circuit, which on the pneumatic pressure signal, the solenoid valve 10 and the solenoid valves 10a, 10b pneumatically controls.
  • the parking brake control device a pneumatic signal which is introduced via the then pneumatic line 20 to the controller 8 and 16 respectively. It is also conceivable a mixture of pneumatic and electrical control of the valve device.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Braking Systems And Boosters (AREA)

Abstract

The invention relates to a valve arrangement (1) for controlling a parking brake system of a track vehicle or of a combination of track vehicles, said system comprising at least one spring brake cylinder. The valve arrangement comprises at least one pressure sensor (4) for producing a pressure signal that depends on the pressure in the spring brake cylinder or on a pressure derived thereof. The invention is characterized in that at least one solenoid valve (10) is electrically controlled, depending on the pressure signal of the pressure sensor (4), in such a manner that the pressure in the spring brake cylinder is limited to a defined maximum pressure.

Description

Ventilanordnung zur Steuerung einer Bremsanlage einer Feststellbremsanlage eines Schienenfahrzeugs Valve arrangement for controlling a brake system of a parking brake system of a rail vehicle
Beschreibung Stand der TechnikDescription of the prior art
Die Erfindung geht aus von einer Ventilanordnung zur Steuerung einer wenigstens einen Federspeicherbremszylinder beinhaltenden Feststellbremsanlage eines Schienenfahrzeugs oder eines Schienenfahrzeugzugs, mit wenigstens einem Drucksensor zur Erzeugung eines vom Druck im Federspeicherbremszylinder oder eines von diesem abgeleiteten Druck abhängigen Drucksignals, gemäß dem Oberbegriff von Anspruch 1. Feststell- oder Parkbremsanlagen von Schienenfahrzeugen nutzen meist Federspeicherbremszylinder, welche einen gegen eine Speicherfeder abgestützten Federspeicherkolben beinhalten, wobei die Federspeicherbremse eine passive Bremse ist, bei welcher der Federspeicherbremszylinder zum Lösen belüftet und zum Zuspannen entlüftet wird. Bei einer bekannten Ventilanordnung zur Steuerung einer wenigstens einen Federspeicherbremszylinder beinhaltenden Feststellbremsanlage eines Schienenfahrzeugs gelangt Druckluft über ein Druckminderventil in die Ventileinrichtung, welche von einer Bedienperson gesteuert, den Federspeicherbremszylinder be- oder entlüftet. Der Drucksensor dient über die Druckmessung im Federspeicherbremszylinder dabei zur Detektion, ob die Feststellbremse zugespannt oder gelöst ist. Da die Druckluft für die Feststellbremse in der Regel von der sich durch den Schienenfahrzeugzug geschleiften Hauptluftbehälterleitung stammt, welche unter einem Druck von 10 bar (10 x 105 Pa) steht und nicht alle Federspeicherbremszylinder auf einen solch hohen Druck ausgelegt sind, dient das Druckminderventil zur Druckabsenkung des Drucks auf einen vorgegebenen Maximaldruck. Solche Druckminder- oder Druckregelventile bedingen jedoch einen gewissen Fertigungs- und Montageaufwand.The invention is based on a valve arrangement for controlling a parking brake system of a rail vehicle or a rail vehicle train containing at least one spring brake cylinder, with at least one pressure sensor for generating a pressure signal dependent on the pressure in the spring brake cylinder or a pressure derived therefrom, according to the preamble of claim 1. or parking brake systems of rail vehicles usually use spring brake cylinders, which include a supported against a storage spring spring accumulator piston, wherein the spring brake is a passive brake in which the spring brake cylinder is ventilated to release and vented for application. In a known valve arrangement for controlling a parking brake system of a rail vehicle which includes at least one spring brake cylinder, compressed air passes through a pressure reducing valve into the valve device, which is controlled by an operator and aerates or bleeds the spring brake cylinder. The pressure sensor is used via the pressure measurement in the spring brake cylinder to detect whether the parking brake is applied or released. Since the compressed air for the parking brake usually comes from the looped by the Schienenfahrzeugzug main air reservoir line, which is under a pressure of 10 bar (10 x 10 5 Pa) and not all spring brake cylinders are designed for such a high pressure, the pressure reducing valve to Pressure reduction of Pressure to a given maximum pressure. However, such pressure reducing or pressure control valves require a certain manufacturing and assembly costs.
Der Erfindung liegt demgegenüber die Aufgabe zugrunde, eine Ventilanordnung der eingangs erwähnten Art derart weiter zu bilden, dass sie kostengünstiger und einfacher aufgebaut ist.The invention is based on the object to further develop a valve assembly of the type mentioned in such a way that it is cheaper and simpler.
Erfindungsgemäß wird diese Aufgabe durch die Merkmale des Patentanspruchs 1 gelöst.According to the invention, this object is solved by the features of patent claim 1.
Offenbarung der Erfindung Erfindungsgemäß ist wenigstens ein Magnetventil vorgesehen, welches abhängig vom Drucksignal des Drucksensors derart elektrisch gesteuert ist, dass der Druck im Federspeicherbremszylinder auf einen vorgegebenen Maximaldruck begrenzt wird.According to the invention, at least one solenoid valve is provided, which is electrically controlled as a function of the pressure signal of the pressure sensor such that the pressure in the spring brake cylinder is limited to a predetermined maximum pressure.
In diesem Fall sorgt daher der Drucksensor in Verbindung mit dem wenigstens einen Magnetventil dafür, dass der Druck im Federspeicherzylinder den vorgegebenen Maximaldruck nicht überschreitet. Dann kann auf das Druckminderventil des Stands der Technik verzichtet werden, was eine gewisse Fertigungs- und Montagekostenersparnis mit sich bringt.In this case, therefore, the pressure sensor in conjunction with the at least one solenoid valve ensures that the pressure in the spring-loaded cylinder does not exceed the predetermined maximum pressure. Then can be dispensed with the pressure reducing valve of the prior art, which brings a certain manufacturing and assembly costs savings.
Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen der im unabhängigen Anspruch angegebenen Erfindung möglich.The measures listed in the dependent claims advantageous refinements and improvements of the independent claim invention are possible.
Gemäß einer bevorzugten Ausführungsform ist weiterhin eine von einer durch eine Bedienperson betätigbare Feststellbremsbedieneinrichtung gesteuerte Ventileinrichtung zum Drucksteigern, Druckhalten und Drucksenken des Drucks in dem Federspeicherbremszylinder vorgesehen, wobei die Ventileinrichtung ein Impulsventil beinhaltet. Von einer Druckmittelquelle aus gesehen ist das wenigstens eine Magnetventil der Ventil ei nrichtung beispielsweise vorgeordnet. In diesem Fall dient das abhängig vom Drucksignal des Drucksensors gesteuerte Magnetventil ausschließlich der Druckbegrenzung des Drucks im Federspeicherbremszylinder, während die Betätigung der Federspeicherbremse durch Drucksteigern, Druckhalten und Drucksenken über die Ventileinrichtung bzw. das Impulsventil erfolgt. Gemäß einer weiteren Ausführungsform ist wenigstens ein Einlass-Magnetventil zum Belüften des Federspeicherbremszylinders und wenigstens ein Auslassventil zum Entlüften des Federspeicherbremszylinders vorgesehen, wobei das Einlass- Magnetventil abhängig vom Drucksignal des Drucksensors derart elektrisch gesteuert ist, dass der Druck im Federspeicherbremszylinder auf den vorgegebenen Maximaldruck begrenzt wird. Weiterhin sind das Einlass- Magnetventil und das Auslass-Magnetventil zum Drucksteigern, Druckhalten und Drucksenken im Federspeicherbremszylinder von einerAccording to a preferred embodiment, a further controlled by an operable by an operator parking brake operating device valve means for increasing the pressure, pressure holding and pressure lowering of the pressure in the spring brake cylinder is provided, wherein the valve means includes a pulse valve. Viewed from a pressure medium source, the at least one solenoid valve of the valve egg ni direction, for example, upstream. In this case, this is controlled depending on the pressure signal of the pressure sensor Solenoid valve excluding the pressure limit of the pressure in the spring brake cylinder, while the operation of the spring brake by pressure increase, pressure hold and pressure lowering via the valve device or the pulse valve. According to a further embodiment, at least one inlet solenoid valve for venting the spring brake cylinder and at least one outlet valve for venting the spring brake cylinder is provided, wherein the inlet solenoid valve is electrically controlled depending on the pressure signal of the pressure sensor, that the pressure in the spring brake cylinder is limited to the predetermined maximum pressure , Furthermore, the inlet solenoid valve and the outlet solenoid valve for pressure increase, pressure holding and pressure lowering in the spring brake cylinder of a
Feststellbremsbedieneinrichtung durch eine Bedienperson ansteuerbar.Parking brake operating device controlled by an operator.
In diesem Fall übt das Einlass-Magnetventil eine Doppelfunktion aus, indem es zum einen für die Druckbegrenzung im Federspeicherbremszylinder sorgt und zum andern auch für die Belüftung desselben zuständig ist.In this case, the inlet solenoid valve performs a dual function by on the one hand ensures the pressure limit in the spring brake cylinder and the other is also responsible for the ventilation of the same.
Genaueres geht aus der folgenden Beschreibung von Ausführungsbeispielen hervor.More specifically, it will be apparent from the following description of embodiments.
Zeichnung Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. In der Zeichnung zeigtDrawing embodiments of the invention are illustrated in the drawing and explained in more detail in the following description. In the drawing shows
Fig.1 einen schematischen Schaltplan einer Ventilanordnung gemäß einer bevorzugten Ausführungsform der Erfindung;1 shows a schematic circuit diagram of a valve arrangement according to a preferred embodiment of the invention;
Fig.2 einen schematischen Schaltplan einer Ventilanordnung gemäß einer weiteren Ausführungsform.2 shows a schematic circuit diagram of a valve arrangement according to a further embodiment.
Beschreibung der AusführungsbeispieleDescription of the embodiments
Bei dem in Fig.1 gezeigten bevorzugten Ausführungsbeispiel einer Ventilanordnung 1 zur Steuerung einer wenigstens einen Federspeicherbremszylinder beinhaltenden Feststellbremsanlage eines Schienenfahrzeugs oder eines Schienenfahrzeugzugs ist aus Maßstabsgründen lediglich eine zum Federspeicherbremszylinder führende Druckleitung 2 gezeichnet, nicht jedoch der Federspeicherbremszylinder selbst, dessen Aufbau und Funktion hinlänglich bekannt ist und deshalb hier nicht weiter beschrieben werden soll.In the preferred embodiment of a shown in Fig.1 Valve assembly 1 for controlling a at least one spring brake cylinder-containing parking brake system of a rail vehicle or a Schienenfahrzeugzugs is drawn for reasons of scale only leading to the spring brake cylinder pressure line 2, but not the spring brake cylinder itself, the structure and function is well known and should therefore not be further described here.
In der Druckleitung 2 ist ein Drucksensor oder Druckwächter 4 angeordnet, welcher den in der zum Federspeicherbremszylinder führenden Druckleitung 2 herrschenden Druck misst und hiervon abhängig ein beispielsweise elektrisches Drucksignal erzeugt. Das Drucksignal wird über eine vorzugsweise elektrische Signalleitung 6 in ein vorzugsweise elektronisches Steuergerät 8 eines Magnetventils 10 eingesteuert. Das Magnetventil 10 ist ebenfalls in die Druckleitung 2 geschaltet und dient zur Druckbegrenzung des Drucks im Federspeicherbremszylinder. Beispielsweise ist das Magnetventil 10 ein 2/2- Wegemagnetventil, mit einer Durchlassstellung und einer Sperrstellung, das über eine Steuerleitung 12 vom Steuergerät 8 angesteuert ist.In the pressure line 2, a pressure sensor or pressure switch 4 is arranged, which measures the pressure prevailing in the leading to the spring brake cylinder pressure line 2 pressure and dependent generates, for example, an electrical pressure signal. The pressure signal is controlled via a preferably electrical signal line 6 in a preferably electronic control unit 8 of a solenoid valve 10. The solenoid valve 10 is also connected in the pressure line 2 and serves to limit the pressure in the spring brake cylinder. For example, the solenoid valve 10 is a 2/2-way solenoid valve, with a passage position and a blocking position, which is controlled by the control unit 8 via a control line 12.
Weiterhin ist eine Ventileinrichtung 14 in die Druckleitung 2 geschaltet und zum Drucksteigern, Druckhalten und Drucksenken des Drucks in dem Federspeicherbremszylinder ausgebildet, beispielsweise als elektromagnetisches, von einem weiteren elektronischen Steuergerät 16 über eine weitere Steuerleitung 18 elektrisch steuerbares Impulsventil.Furthermore, a valve device 14 is connected in the pressure line 2 and designed to increase the pressure, pressure holding and pressure lowering of the pressure in the spring brake cylinder, for example, as an electromagnetic, by another electronic control unit 16 via a further control line 18 electrically controllable pulse valve.
Das weitere Steuergerät 16 wird über eine hier nicht gezeigte Feststellbremsbedieneinrichtung durch eine vorzugsweise elektrische Steuerleitung 20 angesteuert. Über die Feststellbremsbedieneinrichtung kann eine Bedienperson, beispielsweise ein Fahrer des Schienenfahrzeugs oder des Schienenfahrzeugzugs Stellbefehle eingeben, welche durch das Steuergerät 16 in ein von der Ventileinrichtung 14 bewirktes Drucksteigem, Druckhalten oder Drucksenken des Drucks in der Druckleitung 2 umgesetzt werden. Zur Druckversorgung ist die Druckleitung 2 an eine sich durch das Schienenfahrzeug oder durch den Schienenfahrzeugzug geschleifte Hauptluftbehälterleitung 22 angeschlossen, welche beispielsweise einen Druck von 10 bar (10 x 105 Pa) führt. Die Druckleitung 2 beinhaltet daher einen dem Magnetventil 10 vorgeordneten Abschnitt 24, welcher unter dem Druck der Hauptluftbehälterleitung 22 steht und einen dem Magnetventil 10 nachgeordneten Abschnitt 26 mit der Ventileinrichtung 14. In dem dem Magnetventil 10 nachgeordneten Abschnitt 26, genauer zwischen der Ventileinrichtung 14 und dem Drucksensor 4 ist eine Drossel 28 vorgesehen.The further control unit 16 is controlled by a preferably not shown parking brake control device by a preferably electrical control line 20. About the parking brake control device, an operator, such as a driver of the rail vehicle or Schienenfahrzeugzugs enter control commands, which are implemented by the control unit 16 in a 14 effected by the valve means Drucksteigem, maintaining pressure or lowering the pressure in the pressure line 2. For pressure supply, the pressure line 2 is connected to a looped by the rail vehicle or by the rail vehicle train main air reservoir line 22, which, for example, a pressure of 10 bar (10 x 10 5 Pa) leads. The pressure line 2 therefore includes a portion 24 upstream of the solenoid valve 10, which is under the pressure of the main air reservoir line 22 and a portion 26 downstream of the solenoid valve 10 with the valve device 14. In the portion 26 downstream of the solenoid valve 10, more precisely between the valve device 14 and the Pressure sensor 4, a throttle 28 is provided.
Dabei wird das Magnetventil 10 abhängig vom Drucksignal des Drucksensors 4 durch das Steuergerät 8 so gesteuert, dass der Druck in dem dem Magnetventil 10 nachgeordneten Abschnitt 26 der Druckleitung 2 bzw. im Federspeicherbremszylinder auf einen vorgegebenen Maximaldruck begrenzt bzw. eingeregelt wird. Eine solche Begrenzung bzw. Regelung kann beispielsweise durch eine entsprechende Logikschaltung im Steuergerät 8 realisiert sein.In this case, the solenoid valve 10 is controlled depending on the pressure signal of the pressure sensor 4 by the control unit 8 so that the pressure in the solenoid valve 10 downstream portion 26 of the pressure line 2 or in the spring brake cylinder is limited or adjusted to a predetermined maximum pressure. Such a limitation or regulation can be realized for example by a corresponding logic circuit in the control unit 8.
Zum Lösen des Federspeicherbremszylinders wird über die Feststellbremsbedieneinrichtung von der Bedienperson ein entsprechendes Signal eingegeben, welches über die weitere Steuerleitung 20 das Steuergerät 16 ansteuert, welches wiederum das Impulsventil 14 steuert, das daraufhin zum Belüften des Federspeicherbremszylinders in Durchlassstellung geschaltet wird. Das Magnetventil 10 ist dabei ebenfalls in Durchlassstellung geschaltet.To release the spring brake cylinder, a corresponding signal is input via the parking brake operating device, which controls the control device 16 via the further control line 20, which in turn controls the pulse valve 14, which is then switched to vent the spring brake cylinder in forward position. The solenoid valve 10 is also connected in the passage position.
Wenn aber der Druck in dem dem Magnetventil 10 nachgeordneten Abschnitt 26 der Druckleitung 2 einen vorgegebenen, beispielsweise einen zulässigen Maximal(löse)druck für den Federspeicherbremszylinder erreicht, so sorgt ein entsprechendes Drucksignal des Drucksensors 4 im Steuergerät 8 dafür, dass dieses das Magnetventil 10 in Sperrstellung schaltet, so dass der Druck in dem dem Magnetventil 10 nachgeordneten Abschnitt 26 der Druckleitung 2 auf dem vorgegebenen Maximaldruck gehalten wird.But if the pressure in the solenoid valve 10 downstream portion 26 of the pressure line 2 reaches a predetermined, for example, a permissible maximum (release) pressure for the spring brake cylinder, so provides a corresponding pressure signal of the pressure sensor 4 in the control unit 8 that this is the solenoid valve 10 in Locked position switches, so that the pressure in the solenoid valve 10 downstream portion 26 of the pressure line 2 is maintained at the predetermined maximum pressure.
Zum Zuspannen der Federspeicherbremse wird das Impulsventil 14 in seine Entlüftungsstellung geschaltet, wodurch der Federspeicherbremszylinder entlüftet und damit zugespannt wird.To apply the spring brake, the pulse valve 14 is in his Deactivated ventilation position, whereby the spring brake cylinder is vented and thus clamped.
Folglich sind das weitere Steuergerät 16 und damit die Ventileinrichtung 14 bzw. das Impulsventil durch die Feststellbremsbedieneinrichtung von einer Bedienperson derart gesteuert, dass der Druck im Federspeicherbremszylinder gesteigert, gehalten oder gesenkt werden kann. Gleichzeitig wird das vorgeordnete Magnetventil 10 durch das Steuergerät 8 und die Drucksignale des Drucksensors 4 so gesteuert, dass der Druck im Federspeicherbremszylinder auf einen Maximaldruck begrenzt wird.Consequently, the further control unit 16 and thus the valve device 14 and the pulse valve are controlled by the parking brake operating device by an operator such that the pressure in the spring brake cylinder can be increased, maintained or lowered. At the same time, the upstream solenoid valve 10 is controlled by the control unit 8 and the pressure signals of the pressure sensor 4 so that the pressure in the spring brake cylinder is limited to a maximum pressure.
Bei dem Ausführungsbeispiel von Fig.2 sind identische und gleich wirkende Bauteile und Baugruppen mit den gleichen Bezugszeichen wie im vorangehenden Ausführungsbeispiel bezeichnet. Im Unterschied zu diesem ist wenigstens ein Einlass-Magnetventil 10a zum Belüften des Federspeicherbremszylinders und wenigstens ein Auslassventil 10b zum Entlüften des Federspeicherbremszylinders vorgesehen, wobei das Einlass-Magnetventil 10a abhängig vom Drucksignal des Drucksensors 4 derart elektrisch gesteuert ist, dass der Druck im Federspeicherbremszylinder auf den vorgegebenen Maximaldruck begrenzt wird.In the embodiment of Figure 2 identical and identically acting components and assemblies are denoted by the same reference numerals as in the preceding embodiment. In contrast to this, at least one inlet solenoid valve 10a for venting the spring brake cylinder and at least one exhaust valve 10b is provided for venting the spring brake cylinder, the inlet solenoid valve 10a depending on the pressure signal of the pressure sensor 4 is electrically controlled so that the pressure in the spring brake cylinder on the predetermined maximum pressure is limited.
In diesem Fall übt das Einlass-Magnetventil 10a eine Doppelfunktion aus, indem es zum einen für die Druckbegrenzung im Federspeicherbremszylinder sorgt und zum andern auch für die Belüftung desselben zuständig ist. Das Einlass- Magnetventil 10a ist dabei über die Steuerleitung 12 vom Steuergerät 8 ansteuerbar, welches wiederum die Drucksignale vom Drucksensor 4 über die Signalleitung 6 erhält.In this case, the inlet solenoid valve 10a performs a dual function by on the one hand provides for the pressure limit in the spring brake cylinder and on the other hand is responsible for the ventilation of the same. The inlet solenoid valve 10a is actuated via the control line 12 from the control unit 8, which in turn receives the pressure signals from the pressure sensor 4 via the signal line 6.
Andererseits sind das Einlass-Magnetventil 10a und das Auslass-Magnetventil 10b über eine weitere Steuerleitung 20 und das Steuergerät 8 von der Feststellbremsbedieneinrichtung durch die Bedienperson ansteuerbar. Durch eine erforderlichenfalls getaktete Betätigung durch das weitere Steuergerät 16 auf eine Anforderung durch die Feststellbremsbedieneinrichtung können des Einlass- Magnetventil 10a und das Auslass-Magnetventil 10b die Funktionen Drucksteigern, Druckhalten und Drucksenken im Federspeicherbremszylinder realisieren.On the other hand, the inlet solenoid valve 10a and the outlet solenoid valve 10b are controllable via a further control line 20 and the control unit 8 from the parking brake operating device by the operator. By operation, if necessary, timed by the further controller 16 upon request by the parking brake operating device, the inlet solenoid valve 10a and the outlet solenoid valve 10b can perform the functions of increasing pressure, Pressure maintenance and pressure lowering in the spring brake cylinder realize.
Einlass- und Auslassmagnetventil 10a, 10b sind beispielsweise jeweils als 2/2- Wegemagnetventile ausgebildet, wobei ein Anschluss des Einlass-Magnetventils 10a mit der Hauptluftbehälterleitung 22 und ein weiterer Anschluss des Einlass- Magnetventils 10a mit der Druckleitung 2 verbunden ist, während ein Anschluss des Auslass-Magnetventils 10b mit der Druckleitung 2 und ein weiterer Anschluss des Auslass-Magnetventils 10b mit einer Entlüftung oder Drucksenke in Verbindung steht.For example, intake and exhaust solenoid valves 10a, 10b are each formed as 2/2 way solenoid valves, with one port of the inlet solenoid valve 10a connected to the main air tank passage 22 and another port of the inlet solenoid valve 10a connected to the pressure line 2, while one port of the Outlet solenoid valve 10b with the pressure line 2 and another port of the outlet solenoid valve 10b with a vent or pressure sink is in communication.
Zum Lösen der Federspeicherbremse wird das Einlass-Magnetventil 10a in Durchlassstellung geschaltet, wodurch Druckmittel von derTo release the spring brake, the inlet solenoid valve 10a is switched to the passage position, whereby pressure medium from the
Hauptluftbehälterleitung 22 zum Federspeicherbremszylinder gesteuert wird. Wenn dann während des Belüftens der vorgegebene Maximaldruck erreicht ist und der Drucksensor 4 ein entsprechendes Signal an das Steuergerät 8 sendet, schaltet das Einlass-Magnetventil 10a in seine Sperrstellung, in welcher die Druckluftverbindung zwischen der Hauptluftbehälterleitung und dem Federspeicherbremszylinder unterbrochen ist. Dadurch wird ein Rückströmen von Druckluft aus dem Federspeicherbremszylinder sowie ein Nachströmen aus der Hauptluftbehälterleitung 22 vermieden.Main air reservoir line 22 is controlled to the spring brake cylinder. Then, when the predetermined maximum pressure is reached during venting and the pressure sensor 4 sends a corresponding signal to the control unit 8, the inlet solenoid valve 10a switches to its blocking position in which the compressed air connection between the main air reservoir line and the spring brake cylinder is interrupted. As a result, a return flow of compressed air from the spring brake cylinder and a subsequent flow from the main air reservoir line 22 is avoided.
Zum Zuspannen der Federspeicherbremse wird das Einlass-Magnetventil 10a in seine Sperrstellung und das Auslass-Magnetventil 10b in seine Entlüftungsstellung geschaltet, wodurch der Federspeicherbremszylinder mit der Entlüftung in Verbindung gebracht wird, wodurch der Druck im Federspeicherbremszylinder fällt.For applying the spring brake, the inlet solenoid valve 10a is switched to its blocking position and the outlet solenoid valve 10b in its venting position, whereby the spring brake cylinder is brought into connection with the vent, whereby the pressure in the spring brake cylinder drops.
Anstatt durch elektrische Signale und durch elektrische Leitungen könnten die Magnetventile 10, 10a, 10b auch rein pneumatisch gesteuert sein. In diesem Fall erzeugt der Drucksensor 4 ein pneumatisches Drucksignal, das durch die dann pneumatische Leitung 6 dem Steuergerät 8 zugeführt wird, dass eine pneumatische Logikschaltung beinhaltet, welche auf das pneumatische Drucksignal hin das Magnetventil 10 bzw. die Magnetventile 10a, 10b pneumatisch ansteuert. Weiterhin erzeugt dann auch die Feststellbremsbedieneinrichtung ein pneumatisches Signal, welches über die dann pneumatische Leitung 20 an das Steuergerät 8 bzw. 16 herangeführt wird. Denkbar ist auch eine Mischung aus pneumatischer und elektrischer Steuerung der Ventileinrichtung. Instead of electrical signals and electrical lines, the solenoid valves 10, 10a, 10b could also be controlled purely pneumatically. In this case, the pressure sensor 4 generates a pneumatic pressure signal, which is then fed through the then pneumatic line 6 to the control unit 8, which includes a pneumatic logic circuit, which on the pneumatic pressure signal, the solenoid valve 10 and the solenoid valves 10a, 10b pneumatically controls. Furthermore, then also generates the parking brake control device, a pneumatic signal which is introduced via the then pneumatic line 20 to the controller 8 and 16 respectively. It is also conceivable a mixture of pneumatic and electrical control of the valve device.
BezuαszahlenlisteBezuαszahlenliste
Ventilanordnungvalve assembly
Druckleitungpressure line
Drucksensorpressure sensor
Steuerleitungcontrol line
Steuergerätcontrol unit
10 Magnetventil10 solenoid valve
12 Steuerleitung12 control line
14 Ventileinrichtung14 valve device
16 Steuergerät16 control unit
18 Steuerleitung18 control line
20 Steuerleitung20 control line
22 Hauptluftbehälterleitung22 Main air tank line
24 Abschnitt24 section
26 Abschnitt26 section
28 Drossel 28 throttle

Claims

Patentansprüche claims
1. Ventilanordnung (1 ) zur Steuerung einer wenigstens einen Federspeicherbremszylinder beinhaltenden Feststellbremsanlage eines Schienenfahrzeugs oder eines Schienenfahrzeugzugs, mit wenigstens einem Drucksensor (4) zur Erzeugung eines vom Druck im Federspeicherbremszylinder oder eines von diesem abgeleiteten Druck abhängigen Drucksignals, dadurch gekennzeichnet, dass wenigstens ein Magnetventil (10; 10a) vorgesehen ist, welches abhängig vom Drucksignal des Drucksensors (4) derart elektrisch gesteuert ist, dass der Druck im Federspeicherbremszylinder auf einen vorgegebenen Maximaldruck begrenzt wird.1. Valve arrangement (1) for controlling a parking brake system comprising at least one spring brake cylinder of a rail vehicle or a Schienenfahrzeugzugs, with at least one pressure sensor (4) for generating a pressure in the spring brake cylinder or derived from this pressure pressure signal, characterized in that at least one solenoid valve (10; 10a) is provided, which is electrically controlled in dependence on the pressure signal of the pressure sensor (4) such that the pressure in the spring brake cylinder is limited to a predetermined maximum pressure.
2. Ventilanordnung nach Anspruch 1 , dadurch gekennzeichnet, dass eine Steuereinrichtung (8) abhängig vom Drucksignal des Drucksensors (4) ein elektrisches Stellsignal für das wenigstens eine Magnetventil (10; 10a) erzeugt.2. Valve arrangement according to claim 1, characterized in that a control device (8) depending on the pressure signal of the pressure sensor (4) generates an electrical control signal for the at least one solenoid valve (10; 10a).
3. Ventilanordnung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass weiterhin eine von einer durch eine Bedienperson betätigbare Feststellbremsbedieneinrichtung gesteuerte Ventileinrichtung (14) zum Drucksteigern, Druckhalten und Drucksenken des Drucks in dem3. A valve assembly according to claim 1 or 2, characterized in that further controlled by a operable by an operator parking brake operating device valve means (14) for increasing the pressure, pressure holding and pressure lowering of the pressure in the
Federspeicherbremszylinder vorgesehen ist.Spring brake cylinder is provided.
4. Ventilanordnung nach Anspruch 3, dadurch gekennzeichnet, dass die Ventil ei nrichtung (14) ein Impulsventil beinhaltet.4. Valve arrangement according to claim 3, characterized in that the valve includes egg nrichtung (14) comprises a pulse valve.
5. Ventilanordnung nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass von einer Druckmittelquelle (22) aus gesehen das wenigstens eine Magnetventil (10) der Ventileinrichtung (14) vorgeordnet ist.5. Valve arrangement according to claim 3 or 4, characterized in that seen from a pressure medium source (22) from the at least one solenoid valve (10) of the valve device (14) is arranged upstream.
6. Ventilanordnung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass wenigstens ein Einlass-Magnetventil (10a) zum Belüften des6. Valve arrangement according to claim 1 or 2, characterized in that at least one inlet solenoid valve (10 a) for venting the
Federspeicherbremszylinders und wenigstens ein Auslass-Magnetventil (10b) zum Entlüften des Federspeicherbremszylinders vorgesehen ist, wobei das Einlass-Magnetventil (10a) abhängig vom Drucksignal des Drucksensors (4) derart elektrisch gesteuert ist, dass der Druck im Federspeicherbremszylinder auf den vorgegebenen Maximaldruck begrenzt wird.Spring brake cylinder and at least one outlet solenoid valve (10b) is provided for venting the spring brake cylinder, wherein the inlet solenoid valve (10a) depending on the pressure signal of the pressure sensor (4) is electrically controlled such that the pressure in the spring brake cylinder is limited to the predetermined maximum pressure.
7. Ventilanordnung nach Anspruch 6, dadurch gekennzeichnet, dass das Einlass-Magnetventil (10a) und das Auslass-Magnetventil (10b) zum Drucksteigern, Druckhalten und Drucksenken im Federspeicherbremszylinder durch eine Feststellbremsbedieneinrichtung von einer Bedienperson ansteuerbar sind. 7. Valve arrangement according to claim 6, characterized in that the inlet solenoid valve (10a) and the outlet solenoid valve (10b) for increasing the pressure, maintaining pressure and lowering in the spring brake cylinder can be controlled by a parking brake operating device by an operator.
PCT/EP2008/009153 2007-11-02 2008-10-30 Valve arrangement for controlling a brake system of a parking brake system of a track vehicle WO2009056306A1 (en)

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DE102007052291.8 2007-11-02
DE102007052291.8A DE102007052291B4 (en) 2007-11-02 2007-11-02 Valve arrangement for controlling a parking brake system of a rail vehicle

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Citations (3)

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DE2058654A1 (en) * 1970-11-28 1972-06-15 Westinghouse Bremsen Und Appba Multi-stage brake valve device for electropneumatically actuated spring brake systems, especially in rail vehicles
GB1506005A (en) * 1974-06-17 1978-04-05 Gen Signal Corp Brake system for a light rail vehicle
EP1504975A1 (en) * 2003-08-08 2005-02-09 WABCO GmbH & CO. OHG Brake system for a vehicle using a pressure medium

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DE2840262C3 (en) * 1978-09-15 1995-04-20 Knorr Bremse Ag Device for controlling pneumatic or electro-pneumatic brakes on rail vehicles
DE19537622B4 (en) * 1995-10-09 2006-11-23 Daimlerchrysler Ag Device for a rail vehicle with continuous main air line and spring-loaded parking brake
DE19848990A1 (en) * 1998-10-23 2000-04-27 Knorr Bremse Systeme Brake system for rail vehicles has a local electronic controller for each bogie that controls main brake valve and sprung safety brake with a combined air supply to main brake and safety brake controller
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DE2058654A1 (en) * 1970-11-28 1972-06-15 Westinghouse Bremsen Und Appba Multi-stage brake valve device for electropneumatically actuated spring brake systems, especially in rail vehicles
GB1506005A (en) * 1974-06-17 1978-04-05 Gen Signal Corp Brake system for a light rail vehicle
EP1504975A1 (en) * 2003-08-08 2005-02-09 WABCO GmbH & CO. OHG Brake system for a vehicle using a pressure medium

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