EP0724998B1 - Magnetische Bremse, insbesondere lineare Wirbelstrombremse - Google Patents
Magnetische Bremse, insbesondere lineare Wirbelstrombremse Download PDFInfo
- Publication number
- EP0724998B1 EP0724998B1 EP95119537A EP95119537A EP0724998B1 EP 0724998 B1 EP0724998 B1 EP 0724998B1 EP 95119537 A EP95119537 A EP 95119537A EP 95119537 A EP95119537 A EP 95119537A EP 0724998 B1 EP0724998 B1 EP 0724998B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- brake
- rail
- pressure
- eddy current
- magnetic
- 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.)
- Expired - Lifetime
Links
Images
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
- B61H7/083—Skids electromagnetically operated working with eddy currents
Definitions
- the invention relates to a magnetic brake, in particular a linear eddy current brake for rail vehicles, according to Preamble of claim 1.
- the eddy current brakes are in of recent times - especially in the context of further development of high-speed trains - increased attention facing, because they do not slide the rail when braking touch, they are practically wear-free.
- Another The advantage of eddy current rail brakes is that their Braking force absolutely independent of the grip between wheel and Rail is.
- Eddy current brakes then consist of an iron yoke several pole cores. Electric coils energize the brake magnetic in such a way that alternating magnetic north and Southern poles arise.
- the excited eddy current brake is moved by rail - i.e. when braking - result due to the temporal flow changes electromagnetic fields and eddy currents.
- the secondary through the eddy currents
- the magnetic field is the magnetic field of the brake opposed. The resulting, opposite horizontal force component acting in the direction of travel the braking force.
- the linear one touches Eddy current brake when braking not the rail, but it is at a height of about 7 mm above the Rail held.
- the brake is generally about same way as the magnetic rail brake in a bogie built-in. To keep the distance of the brake to the rail constant However, the brakes must be able to adhere to one Brake carrier on an unsprung part of the bogie - e.g. on the wheel bearings - support.
- the magnetic yoke is the Brake attached to a brake carrier, which in turn with the Bogie is connected.
- Such an arrangement shows e.g. OS 26 14 298.
- the font shows on both sides of the wheelsets Brackets under the bogie frame for mounting the eddy current brake.
- the parallel to the rail aligned beams are on their lower side with Brake magnets are provided via a lifting cylinder actuation together with the brake carrier near the rail and from this can be moved away.
- the invention aims at the suspension technology of the to improve generic brakes.
- a Air gap between brake is as small and constant as possible and rail desirable to minimize losses hold.
- the invention achieves this goal through the subjects of Claims 1 and 5.
- the invention is based on the idea that at low driving speeds acting high Tightening forces, which lead to a lowering of the Eddy current brakes lead to counteract such a the smallest possible gap is adjustable without the brake rests on the rail at low speeds. Due to the relief, one on the unsprung components supporting force constant and set so small that load-bearing components are relieved and the gap width between brake and rail can be kept constant.
- a linear eddy current brake for Rail vehicles with at least one brake magnet that over a suspension device on an unsprung element and on arranged a bogie of a rail vehicle and over a lifting device in the direction of the rail and from this is moved away, then has a device for relief the rail brake (or its suspension) depending on the Tightening force between rail and brake (see claim 1).
- the device for relief is particularly advantageous Software routine, which depends on a relief element the tightening force controls (see claim 2).
- the existing software - e.g. for slip protection - needs so that they are only modified in such a way that they are made of Driving speed and excitement one of the pulling power suitably counteracting between brake and rail Relief force calculated and used in a control command Control of the relief element is implemented.
- the Relief element can either be the one already provided Lifting device or an additional relief element (e.g. can be a continuous relief element and / or multi-stage ventilated ring bellows unit and / or one (possibly additional second or third)) Lift cylinders can be provided (see claims 3 and 4).
- the inventive method for controlling a magnetic brake can - and this variant is special easy to implement - the rail brake in multiple stages at Exceeding certain tightening force values (see claim 6) and / or continuously depending on the tightening force values relieve (see claim 7).
- the continuous relief is a way to use the rail brake on a Relieve braking as much as possible.
- the discharge will chosen such that the brake is not inadvertently by the Rail is torn.
- top refers to Eddy current brakes and their suspension in their normal Installation position and are not to be understood as restrictive.
- FIG. 1 shows an eddy current brake 1, the one Bogie 2 is attached (see e.g. the one already mentioned DE OS 26 14 298).
- the eddy current brake 1 has brake magnets 3 on whose central elements are solenoid and Magnetic core (not shown).
- the bogie 2 lies on springs 4 on axles 5 of the wheels 6 of the rail vehicle.
- a carrier 7 serves to hold the Eddy current brake 1, a lifting device 8 can Eddy current brake from the braking position of Fig. 1a (e.g. 7 mm over the rail) in the released position of Fig. 1b to raise.
- Articulated arms 9, 10 of the carrier 9 connect the eddy current brake 1 articulated with the axis 5 and with a stop unit 11. They create a possibility of twisting by one parallel to the Axle of wheelset lying.
- the eddy current brake 1 is now decoupled from the axle bearings 5 in the direction of travel.
- a prop 12 supports the braking force on the bogie 2 when braking.
- the lifting element 8 is - as can be seen in Fig. 2 - as an air bellows executed, the when venting a bellows section 13 Brake via a folding bell 14 from the braking position of FIG. 1a can be brought into the release position of FIG. 1b.
- the invention uses the lifting device 8 in an advantageous manner as Relief element during a braking process.
- Fig. 3 illustrates the braking between rails and brake acting force depending on the Excitation O (excitation of the brake) and the driving speed v.
- the strong increase in this force is clearly visible a decrease in travel speed (e.g. an increase of 10 kN at 300 km / h to almost 40 kN at approx. 50 km / h).
- the increased Attraction leads to at low speeds strengthen sag of the brake. This effect works Invention by relieving the brake on the Lifting device 8 counter.
- the relief force will For example, chosen according to the type of FIG. 4, the one gradual relief depending on Suggests speed and excitement, e.g. at 10kA ⁇ O ⁇ 30 kA at approx.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
- Braking Systems And Boosters (AREA)
- Regulating Braking Force (AREA)
Description
- Wirbelstrombremse
- 1
- Drehgestell
- 2
- Bremsmagnete
- 3
- Federn
- 4
- Achsen
- 5
- Räder
- 6
- Träger
- 7
- Hubeinrichtung
- 8
- Gelenkarme
- 9, 10
- Anschlagseinheit
- 11
- Stütze
- 12
- Balgabschnitt
- 13
- Faltenbalt
- 14
Claims (9)
- Magnetische Bremse, insbesondere lineare Wirbelstrombremse (1) für Schienenfahrzeuge mit wenigstens einem Bremsmagneten (3), die über eine Aufhängeinrichtung (7) an einem ungefederten Element, insbesondere an den Achslagern, eines Schienenfahrzeugs angeordnet und über eine Hubvorrichtung (8) in Richtung der Schiene und von dieser wegbewegbar ist, gekennzeichnet durch eine Einrichtung zur Entlastung der Schienenbremse über ihre Aufhängung in direkter oder indirekter Abhängigkeit der Anzugskraft zwischen Schiene und Bremse.
- Magnetische Bremse nach Anspruch 1, dadurch gekennzeichnet, daß die Einrichtung zur Entlastung eine Softwareroutine ist, welche ein Entlastungselement in Abhängigkeit der Anzugskraft ansteuert.
- Magnetische Bremse nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß als Entlastungselement eine kontinuierlich und/oder mehrstufig be- und entlüftbare Ringbalgeinheit (13) vorgesehen ist.
- Magnetische Bremse nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß als Entlastungselement ein Hubzylinder vorgesehen ist.
- Verfahren zur Steuerung einer magnetischen Bremse, insbesondere einer linearen Wirbelstrombremse für Schienenfahrzeuge mit wenigstens einem Bremsmagneten, die über eine Aufhängeinrichtung an einem Drehgestell eines Schienenfahrzeugs angeordnet und über eine Hubvorrichtung in Richtung der Schiene und von dieser wegbewegt wird, dadurch gekennzeichnet, daß die Schienenbremse bei einem Bremsvorgang über ihre Aufhängung in direkter oder indirekter Abhängigkeit der Anzugskraft zwischen Schiene und Bremse entlastet wird.
- Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß die Schienenbremse mehrstufig beim Überschreiten bestimmter Anzugskraftwerte entlastet wird.
- Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß die Schienenbremse kontinuierlich in Abhängigkeit der Anzugskraftwerte entlastet wird.
- Verfahren nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, daß die Entlastungskraft anhand einer Messung der Anzugskraft zwischen Schiene und Bremse ermittelt wird.
- Verfahren nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, daß die Entlastungskraft über eine Erfassung der Magneterregung unter Einbeziehung der Zugfahrgeschwindigkeit ermittelt wird.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19503365A DE19503365C2 (de) | 1995-02-02 | 1995-02-02 | Lineare Wirbelstrombremse und Verfahren zur Steuerung einer linearen Wirbelstrombremse |
DE19503365 | 1995-02-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0724998A1 EP0724998A1 (de) | 1996-08-07 |
EP0724998B1 true EP0724998B1 (de) | 1999-06-16 |
Family
ID=7752993
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95119537A Expired - Lifetime EP0724998B1 (de) | 1995-02-02 | 1995-12-12 | Magnetische Bremse, insbesondere lineare Wirbelstrombremse |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0724998B1 (de) |
AT (1) | ATE181294T1 (de) |
DE (2) | DE19503365C2 (de) |
ES (1) | ES2133651T3 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19817233C1 (de) * | 1998-04-17 | 2000-01-05 | Knorr Bremse Systeme | Verfahren zur Steuerung und/oder Regelung einer Wirbelstrombremse |
DE10009331C2 (de) * | 2000-02-28 | 2002-10-24 | Knorr Bremse Systeme | Magnetische Bremse mit Aktuatoren zur Einstellung des Abstandes von der Schienenoberkante |
DE10154775A1 (de) * | 2001-11-08 | 2003-05-22 | Knorr Bremse Systeme | Magnetspulenanordnung für Schienenfahrzeuge zur Verbesserung der Traktion |
DE102012013520A1 (de) | 2012-07-06 | 2014-01-09 | Knorr-Bremse Gmbh | Verfahren zum Steuern einer Magnetschienenbremsvorrichtung eines Schienenfahrzeugs |
EP2754599B1 (de) * | 2013-01-09 | 2016-04-06 | Bombardier Transportation GmbH | Eisenbahnaufhängung mit einem beweglichen elektromagnetischen Antriebs- oder Bremsmittel |
DE102013213241A1 (de) | 2013-07-05 | 2015-01-08 | Siemens Aktiengesellschaft | Schiene zum Einsatz einer Wirbelstrombremse |
DE102014203689B4 (de) | 2014-02-28 | 2015-11-05 | Siemens Aktiengesellschaft | Fahrwerk für ein Schienenfahrzeug |
WO2016015759A1 (fr) * | 2014-07-30 | 2016-02-04 | Gravity Transport System S.A. | Système de freinage de véhicule sur rail |
CN116061698B (zh) * | 2023-04-06 | 2023-06-09 | 成都西交华创科技有限公司 | 一种兼容既有铁路的高温超导磁悬浮系统及改造方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH592534A5 (de) * | 1973-10-24 | 1977-10-31 | Oerlikon Buehrle Ag | |
DE2440645A1 (de) * | 1974-08-24 | 1976-03-04 | Knorr Bremse Gmbh | Bremsvorrichtung fuer schienenfahrzeuge |
FR2314852A1 (fr) * | 1975-06-18 | 1977-01-14 | Sncf | Systeme de suspension de frein lineaire a courants de foucault pour vehicule ferroviaire |
DE4009449C2 (de) * | 1990-03-23 | 1997-08-07 | Knorr Bremse Ag | Wirbelstrom-Schienenbremse |
-
1995
- 1995-02-02 DE DE19503365A patent/DE19503365C2/de not_active Expired - Fee Related
- 1995-12-12 AT AT95119537T patent/ATE181294T1/de active
- 1995-12-12 ES ES95119537T patent/ES2133651T3/es not_active Expired - Lifetime
- 1995-12-12 EP EP95119537A patent/EP0724998B1/de not_active Expired - Lifetime
- 1995-12-12 DE DE59506235T patent/DE59506235D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ATE181294T1 (de) | 1999-07-15 |
DE19503365C2 (de) | 2000-11-02 |
DE59506235D1 (de) | 1999-07-22 |
DE19503365A1 (de) | 1996-08-08 |
EP0724998A1 (de) | 1996-08-07 |
ES2133651T3 (es) | 1999-09-16 |
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