WO2013024018A2 - Système de frein électromagnétique à patin pour un véhicule ferroviaire - Google Patents

Système de frein électromagnétique à patin pour un véhicule ferroviaire Download PDF

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Publication number
WO2013024018A2
WO2013024018A2 PCT/EP2012/065667 EP2012065667W WO2013024018A2 WO 2013024018 A2 WO2013024018 A2 WO 2013024018A2 EP 2012065667 W EP2012065667 W EP 2012065667W WO 2013024018 A2 WO2013024018 A2 WO 2013024018A2
Authority
WO
WIPO (PCT)
Prior art keywords
rail
brake device
force
force sensor
magnetic rail
Prior art date
Application number
PCT/EP2012/065667
Other languages
German (de)
English (en)
Other versions
WO2013024018A3 (fr
Inventor
Henry Lehmann
Marc-Gregory Elstorpff
Richard Rathammer
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 WO2013024018A2 publication Critical patent/WO2013024018A2/fr
Publication of WO2013024018A3 publication Critical patent/WO2013024018A3/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
    • B61H7/00—Brakes with braking members co-operating with the track
    • B61H7/02—Scotch blocks, skids, or like track-engaging shoes
    • B61H7/04—Scotch blocks, skids, or like track-engaging shoes attached to railway vehicles
    • B61H7/06—Skids
    • B61H7/08—Skids electromagnetically operated

Definitions

  • the present invention relates to a Magnetschienenbremseinnchtung for a rail vehicle with at least one friction component and at least one electromagnet and a rail vehicle with such Magnetschienenbremseinnchtung.
  • additional brakes are used in addition to pressure-operated brakes, such as linear eddy current brakes or magnetic rail brakes.
  • a magnetic rail brake device is a friction brake device, which generates a braking effect by friction between a friction component of the brake device and the rail.
  • the braking force of a magnetic rail brake depends on the adhesive force with which the Magnetschienenbremseinnchtung adheres to the rail.
  • This adhesive force is usually generated by energizing a belonging to Magnetschienenbremseinnchtung electromagnet, which generates a corresponding magnetic adhesive force.
  • the braking force depends on the coefficient of friction, which determines the friction between the rubbing on the rail component of Magnetschienenbremseinnchtung and the rail. This coefficient of friction depends on the rail and ambient conditions. For example, the coefficient of friction changes sharply when an intermediate layer of, say, leaves or sand has formed on the rail or a liquid deposits on it. Accordingly, the braking force exerted by a magnetic rail brake means varies depending on from the rail conditions during individual braking or even during a single braking operation.
  • a rail vehicle may designate one or more cars with or without their own drive and / or a towing vehicle in any desired combination.
  • a rail vehicle may have railcars.
  • a rail vehicle or a carriage of the rail vehicle may have bogies on which wheel axles of the vehicle are arranged. The bogies can be attached to a car body.
  • a brake system may have at least one magnetic rail brake device and a service brake device.
  • a magnetic rail brake device may comprise as components one or more electromagnets which can be brought into contact with a rail and / or which can be energized. When energizing, the one or more electromagnets of the magnetic rail brake device can adhere to the rail by a magnetic effect.
  • a magnetic rail brake device has at least one mechanical and / or pneumatic actuating device as a component.
  • Such an actuating device may be suitable for moving the electromagnet and / or friction components of the magnetic rail brake device from a rest position to a braking position and vice versa. It can be provided that such an actuating device is pneumatically or electrically controllable, for example by a brake control device.
  • a friction component of the magnetic track Braking device may be provided to be in frictional contact with the rail during braking by means of the magnetic rail brake device. Such a friction component may be an electromagnet or attached to an electromagnet.
  • a service brake device may in particular be a pressure-actuated brake device, for example a pneumatic or hydraulic brake device.
  • a brake pressure can be generated, via which friction elements of Reibbrems sootheen can be brought into frictional contact with each other to brake wheels and the vehicle.
  • service brakes are disc brakes or block brakes.
  • a brake pressure is thus converted into heat by exerting a braking force on frictional elements.
  • applied braking torques or braking forces are absorbed via the wheel-rail contact.
  • the amount of braking torque or braking force that can be absorbed via this wheel-rail contact is limited by a parameter that is generally referred to as the adhesion coefficient or adhesion coefficient.
  • This value for a single wheel depends on the load on the wheel due to a weight bearing on it, and in particular on the contact conditions between wheel and rail.
  • the coefficient of adhesion can be very low.
  • the coefficient of adhesion depends strongly on a prevailing wheel slip.
  • the wheel slip S is defined as where v T denotes the translation speed of the rail vehicle and v R the rotational speed of the viewing wheel. If the wheel slip S of a wheel is exactly at zero, no braking or acceleration force can be transmitted via this wheel.
  • a pressure-actuated service brake device may be associated with an anti-slip device which is designed to detect and possibly counteract a sliding and / or locking of the wheels.
  • drain valves may be provided, for example, in pneumatic service brake devices, which reduce the brake pressure at suitable locations when the anti-skid device is triggered in order to reduce the transmitted braking force.
  • An anti-slip device may be configured to provide appropriate signals when it triggers and / or terminates anti-skid control.
  • a control device may be designed to control a Magnetschienenbremseinnchtung. In this case, the control device may be provided separately for the Magnetschienenbremseinnchtung.
  • a control device can also be designed to control other brake devices of the brake system, such as the service brake device.
  • the control device may be an electronic control device such as a brake computer.
  • a control device for controlling the Magnetschienenbremseinnchtung comprises a plurality of separate control units, which may be assigned to different electromagnets and / or actuators of Magnetschienenbremseseinchtung.
  • the driving of the Magnetschienenbremseinnchtung may in particular denote the electrical, pneumatic and / or electropneumatic driving of actuators of Magnetschienenbremseseinchtung.
  • one or more electromagnets can be moved between a rest position and a braking position by activating the actuating devices.
  • a frictional contact between the Magnetschienenbremseinnchtung and the rail can be done.
  • friction components can be brought by electromagnet from the braking position in contact with the rail. It is also conceivable that in the braking position there is already a contact between Magnetschienenbremseinnchtung and / or a friction component and the rail, which is amplified by the Bestromen. Expediently, energizing takes place when the at least one electromagnet to be controlled is in a braking position. In some vehicles, it may also be provided that the magnetic rail brake means or their electromagnets are sufficiently close to the rail already in the rest position that frictional contact occurs between the magnetic rail brake means, in particular a friction component, and the rail during energization.
  • the activation of the magnetic rail brake device can comprise the energizing and / or targeted supply of current and / or the interruption of a power supply of one or more electromagnets of the magnetic rail brake device.
  • activating and / or actuating a magnetic rail brake device may include driving components of the magnetic rail brake means such that frictional contact occurs between rail and magnetic rail brake means, such as by driving at least one actuator to place the magnetic rail brake means in a braking position, and / or driving to Energizing one or more electromagnets.
  • Deactivation and / or release of a magnetic rail brake device may include driving components of the magnetic rail brake device such that frictional contact is interrupted.
  • a power supply of one or more electromagnets are interrupted and / or an actuating device move at least one component of the Magnetschienenbremseinnchtung of a braking position in a rest position.
  • a Magnetschienenbremseinnchtung having a plurality of separately controllable friction components and / or actuators and / or electromagnets.
  • a driving can take place in accordance with predetermined braking parameters, which can be provided for example by a central control device.
  • a control device may be designed to control a magnetic rail brake based on or in dependence on certain parameters.
  • the tax be formed direction to receive a parameter corresponding state data.
  • state data can be provided for example by a sensor device with which the control device is connected or connectable. It is also conceivable that the control device for data transmission is connected to at least one further control device in order to receive corresponding state data from it.
  • the control device may be designed to determine or calculate state data corresponding to the parameter in question based on sensor data received from a sensor device and / or a control device. Thus, corresponding state data may be based on sensor data or sensor data provided by appropriate sensor devices.
  • a brake system can be connected or connectable to a sensor device and / or a sensor device can be assigned to the brake system or to a magnetic rail brake device.
  • a sensor device may include, for example, wheel speed sensors and / or speed sensors and / or brake effect sensors, such as brake force sensors and / or brake torque sensors, and / or deceleration sensors and / or acceleration sensors.
  • a sensor device can be set up to determine measured values which represent a variable to be determined. In this case, the measured values can directly specify the variable to be determined or it can be provided that the size to be determined can be determined based on the measured values. For example, measured values can specify a current to be determined directly, or allow the current to be calculated, for example by a control device.
  • a control device of the brake systems in particular the control device for activating the magnetic rail brake device, to be connected to the sensor device and / or other data transmission control devices in order to receive, for example, sensor data and / or status data and / or operating parameters.
  • the present invention relates to a magnetic rail brake device for a rail vehicle with at least one friction component, which in frictional contact with a rail can be brought and at least one electromagnet, which it is capable of generating in a powered state, to generate a holding force between the friction component and the rail.
  • the magnetic rail brake device has at least one connecting device, which is able to connect the friction component to a carriage of the rail vehicle and at least one force sensor device with force sensors, which are able to determine measured values which generated by a frictional contact of the friction component with the rail Represent braking force.
  • a braking force actually applied by the magnetic rail brake device can be detected, thereby improving control of the magnetic rail brake device.
  • changes in the applied braking force may be detected based on changes in the friction conditions between the friction component and the rail.
  • the connecting device can be connected to a carriage structure of a carriage of the rail vehicle and / or a bogie of a rail vehicle on which wheel axles of the rail vehicle are located.
  • the friction component is arranged such that it is located between two axles on a bogie.
  • the connecting device may be connected to an actuating device or comprise an actuating device. It can be provided in particular that the connecting device is able to produce a rigid connection to the car. In particular, the connecting device can be firmly screwed or welded to the carriage or bogie.
  • a braking force may correspond to the friction force generated by frictional contact of the friction component with the rail. The braking force may depend on an adhesion force generated by an electromagnet and / or on a current intensity and / or voltage with which the at least one electromagnet is supplied.
  • Force sensors may be provided, for example, on a carriage assembly, on a bogie and / or on the connecting device and / or on an actuating device and / or on a friction component and / or on an electromagnet and / or on transition points between such components of the magnetic rail brake device. It can be provided that the force sensor device has at least one force sensor, which are arranged in a force flow of the braking force. It is also possible to arrange a plurality of force sensors in the force flow. In particular, the force sensor or sensors can be arranged between the friction component and the connecting device. In this case, one or more force sensors may be provided on the connecting device or on the bogie. By means of such force sensors can be achieved in particular a simple mechanical determination of the braking force.
  • the force sensor device may comprise at least one load cell as force sensor. About such a force transducer, a braking force can be easily determined directly.
  • the force sensor device is designed to measure a deformation generated by the braking force. This can possibly save a more expensive and sensitive load cell. It is to be assumed that when a braking force is exerted, the mechanical connections between the carriage, the bogie and / or the connecting device and the friction component are subjected to considerable mechanical stresses which lead to deformations of certain components. With knowledge of the structure of Magnetschienenbremseinnchtung and their attachment to the car, especially on a bogie, can be concluded from the deformations on the applied braking force. It may be expedient that the force sensor device comprises at least one strain gauge as a force sensor. In particular deformations can be well determined via such a strain gauge.
  • the force sensor device further comprises a current sensor which is capable of determining current measurement data which represents a current flowing through the electromagnet.
  • the current sensor can be integrated into the force sensor device. It may be provided that components of the force sensor device for determining measured values representing the braking force are mounted or fastened close to or on the electromagnet. Thus, an integrated sensor device can be provided which has both components for determining measured values relating to the braking force and for determining current measured values.
  • the magnetic rail brake device can be connected or connectable to an electronic control device. This allows a targeted control of the magnetic rail brake device, in particular in conjunction with other electronically controlled braking devices of the rail vehicle. It is conceivable that the control device is designed to continuously monitor, control and / or regulate the braking force exerted by one or more friction components during braking by the magnetic rail brake device and / or the associated energization of the associated electromagnets.
  • the magnetic rail brake device can be integrated in a brake system.
  • the electronic control device may be a control device specifically assigned to the magnetic rail brake device. It is also conceivable that the electronic control device is a brake computer and / or connected to a brake computer or is connectable, which is able to control other brake devices of the brake system.
  • the electronic control device of the magnetic rail brake device may have various electronic control units, which may for example be associated with individual electromagnets and / or individual bogies and / or individual cars.
  • the force sensor device and / or a current measuring device for measuring the electric current with which one or more electromagnets are energized can be connected or connectable to the electronic control device.
  • the electronic control device is designed for this purpose, the magnetic rail brake device and / or one or more actuators of the magnetic rail brake device and / or one or to control several electromagnets of the magnetic rail brake device.
  • the electronic control device is able to monitor and / or store the braking force exerted in each case for a given energization of one or more associated electromagnets for a plurality of friction components.
  • the control device can be designed to store the course of the braking force determined for a friction component at a given energization and / or to compare it with corresponding data for other friction components. It may be expedient that the electronic control device is designed to detect and compare the course of the braking force as a function of a determined energization for friction components, which may be arranged on the same rail side.
  • the electronic control device can determine, for example, whether the frictional properties of a certain friction component deviate from the frictional properties of other friction components. Thus, for example, a faulty or damaged friction component can be detected in this way. For example, it can be recognized if there is a deposit on a friction component or a damage of a friction surface of the friction component.
  • the at least one electromagnet can be supplied with a variable electric current in accordance with an electronic control device.
  • a variable adhesive force can be achieved. This allows a more accurate control of the magnetic track brake device by the control device.
  • the electronic control device is able to supply a plurality of electromagnets individually with different currents and / or to control them accordingly.
  • the electromagnets and / or friction components can be controlled by the electronic control device individually and / or separately from each other.
  • the electronic control device is designed to control the electric current with which the at least one electromagnet can be supplied, based on measured values of the force sensor device. These may in particular be measured values which represent the braking force. This allows accurate and reliable control of the magnetic track brake device.
  • the control device may be designed to control the electromagnet based on data relating to the braking force determined by the force sensor device.
  • rail conditions can be taken into account which can influence a braking force generated by a magnetic rail brake device.
  • the measured values can be processed and / or transformed.
  • parameters for controlling the electromagnet can be calculated.
  • the invention also relates to a rail vehicle with a magnetic rail brake device described herein.
  • the magnetic rail brake device may comprise an electronic control device and / or be connected or connectable to the electronic control device.
  • the Magnetschienenbremsein- direction may be part of a brake system of the rail vehicle, which may have further braking devices, in particular a pneumatic or hydraulic service brake device.
  • FIG. 1 is a schematic representation of a Magnetschienenbremseinrich- device of a rail vehicle.
  • FIG. 1 shows a magnetic track brake device 10 for a rail vehicle.
  • the magnetic rail brake device 10 is fastened to a bogie 12 of a rail vehicle, on which furthermore a first wheel axle 14 and a second wheel axle 16 are provided.
  • the magnetic rail brake device 10 has a friction component 18, which is arranged on an electromagnet 20 and fixedly connected thereto.
  • the electromagnet 20 and friction component 18 may be integrally formed. In this case, the friction component may be formed by a friction surface of the electromagnet 20.
  • the electromagnet 20 is attached to an actuator 22 of the magnetic rail brake device 10.
  • the electromagnet 20 can be moved with the friction component 18 between a rest position and a braking position.
  • the actuator 22 may be pneumatically actuated.
  • a power supply of the electromagnet 20 can be guided via the actuating device 22.
  • the actuator 22 is attached via a connecting device 24 to the bogie 12.
  • the connecting device 24 may comprise a welded or screwed to the bogie 12 linkage.
  • the connecting device 24 may be rigidly connected to the bogie and / or the actuating device 22.
  • a force sensor device 26 is provided.
  • the force sensor device 26 has a plurality of components which are capable of detecting a braking force exerted for braking when the magnetic rail brake device 10 is actuated or the friction component 18 is used.
  • the force sensor device 26 can in particular detect strain gauges which can be arranged on the electromagnet 20 and / or the friction component 18 and / or the actuating device 22 and / or the connecting device 24 and / or the bogie 12 in a force flow of the braking force.
  • a current sensor is integrated in the force sensor device, which is able to detect the current flowing through the electromagnet 20 current.
  • the force sensor device 26 is connected to an electronic control device 28 for data transmission. Connections for data transmission or communication are shown by dashed lines in FIG. Such connections may be wired and / or wireless connections.
  • the electrical The electronic control device 28 is designed to receive data from the force sensor device 26, which represent a braking force exerted by the friction component 18 and a current flowing through the electromagnet.
  • the data may be measured values or data which has already been processed and / or evaluated by the force sensor device 26 and based on corresponding measured values. It can be provided that the force sensor device 26 has a suitable evaluation electronics.
  • the electronic control device 28 is formed in this example as a brake computer, which is capable of more on the car, on which the bogie 12 is arranged, befindle lent brake devices of the rail vehicle to drive.
  • the electronic control device 28 may be connected to further electronic control devices of the rail vehicle, for example with a central train or brake computer.
  • the electronic control device is able to control or regulate the current intensity and / or voltage with which the electromagnet 20 is supplied.
  • the electronic control device 28 is designed to control the electromagnet 20 and, in particular, to control the current intensity and / or voltage with which the electromagnet 20 is supplied based on data relating to the braking force determined by the force sensor device 26.
  • further parameters can be taken into account, such as a driving speed, a wheel speed associated wheels, in particular the wheels 14 and 16, and / or a braking request.
  • a brake request can be transmitted, for example, by a central facility.
  • the electronic control device 28 is further designed to monitor and / or compare a course of the relationship between energization of the electromagnet 20 and the generated braking force for a plurality of friction components at least in carriages or over the length of the rail vehicle. Based on differences in this course, the electronic Control means 28 close to a deposit or damage of a friction surface, which could have occurred at a single friction component 18.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Regulating Braking Force (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Braking Arrangements (AREA)

Abstract

L'invention concerne un système de frein électromagnétique à patin (10) pour un véhicule ferroviaire, qui comprend au moins un élément de friction (18) qui peut être mis en contact de friction avec un rail et au moins un électroaimant (20) qui permet, à l'état passant, de produire une force de retenue entre l'élément de friction (18) et le rail. Ledit système de frein électromagnétique à patin présente également au moins un dispositif de raccordement (24) permettant de relier l'élément de friction (18) à une voiture du véhicule ferroviaire, ainsi qu'au moins un dispositif capteur de force (26) doté de capteurs de force qui permettent d'obtenir des valeurs mesurées représentant une force de freinage produite par un contact de friction de l'élément de friction (18) avec le rail. L'invention concerne en outre un véhicule ferroviaire muni d'un dispositif de frein électromagnétique (10) correspondant.
PCT/EP2012/065667 2011-08-12 2012-08-10 Système de frein électromagnétique à patin pour un véhicule ferroviaire WO2013024018A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011110049.4 2011-08-12
DE102011110049.4A DE102011110049B4 (de) 2011-08-12 2011-08-12 Magnetschienenbremseinrichtung für ein Schienenfahrzeug

Publications (2)

Publication Number Publication Date
WO2013024018A2 true WO2013024018A2 (fr) 2013-02-21
WO2013024018A3 WO2013024018A3 (fr) 2013-06-20

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/065667 WO2013024018A2 (fr) 2011-08-12 2012-08-10 Système de frein électromagnétique à patin pour un véhicule ferroviaire

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DE (1) DE102011110049B4 (fr)
WO (1) WO2013024018A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013219826A1 (de) * 2013-09-30 2015-04-02 Siemens Aktiengesellschaft Lineare magnetische Schienenbremse
DE102018200893A1 (de) * 2018-01-19 2019-07-25 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Bestimmen des aktuellen Kraftschlusses zwischen Rad und Schiene
CN108790841A (zh) * 2018-07-19 2018-11-13 李贺清 高铁列车防脱轨紧急刹车装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1537392A (fr) * 1967-01-03 1968-08-23 Knorr Bremse Gmbh Frein électromagnétique sur rail pour véhicules sur rails
CH592534A5 (fr) * 1973-10-24 1977-10-31 Oerlikon Buehrle Ag
DE102008029312B3 (de) * 2008-06-20 2009-12-24 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Verfahren zur Wirküberwachung von Schienenbremsen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
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Also Published As

Publication number Publication date
DE102011110049A1 (de) 2013-02-14
WO2013024018A3 (fr) 2013-06-20
DE102011110049B4 (de) 2017-05-24
DE102011110049A9 (de) 2014-08-14

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