EP0575935B1 - Dispositif de frein magnétique sur rail - Google Patents

Dispositif de frein magnétique sur rail Download PDF

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Publication number
EP0575935B1
EP0575935B1 EP93109865A EP93109865A EP0575935B1 EP 0575935 B1 EP0575935 B1 EP 0575935B1 EP 93109865 A EP93109865 A EP 93109865A EP 93109865 A EP93109865 A EP 93109865A EP 0575935 B1 EP0575935 B1 EP 0575935B1
Authority
EP
European Patent Office
Prior art keywords
magnetic
rail brake
magnetic rail
coil
brake according
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
Application number
EP93109865A
Other languages
German (de)
English (en)
Other versions
EP0575935A1 (fr
Inventor
Uwe Kröger
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.)
Knorr Bremse AG
Original Assignee
Knorr Bremse AG
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 AG filed Critical Knorr Bremse AG
Publication of EP0575935A1 publication Critical patent/EP0575935A1/fr
Application granted granted Critical
Publication of EP0575935B1 publication Critical patent/EP0575935B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 magnetic rail brake according to the preamble of claim 1.
  • a generic magnetic rail brake is from DE-OS 27 20 815 Knorr-Bremse GmbH, Kunststoff, known.
  • This magnetic rail brake exists essentially two curved, metallic legs that are U-shaped are connected by means of a rigidly connected web part.
  • the pole shoes which represent the end of the legs, each have at their ends two contact surfaces running parallel to the rail, which when the Magnetic rail brakes have a certain distance from the rail.
  • the Legs themselves are curved, so that the pole shoes with their inner surfaces in lower part are closer than in the upper part of the legs. Through this Curvatures in the legs form a cavity between them, which leads to Recording the coil carrier is used.
  • the main disadvantage of this known magnetic rail brake are its perceived geometric dimensions, the total length, i.e. Iron core plus bobbin is about 220 mm in height and 140 mm in width. These dimensions are perceived by the end customers as too large, so that its Installation options are limited.
  • the total weight is proportional designed high, because for a certain nominal adhesive force (kN), e.g. 85 kN a Nominal current of approximately 29 amps is required to get the appropriate field strength achieve this required nominal adhesive force either by changing the to magnetizing core or by changing the flow of the excitation coils can be achieved.
  • kN nominal adhesive force
  • a training according to the features of the claims enables such a compact design of the magnetic rail brake that the entire height of the contact surface of the pole shoes on the rail up to the upper edge of the coil body is not larger than 160 mm, the clear dimensions width x height of the Spool-receiving space in the coil body essentially not 60x30 mm exceed.
  • the height of the metallic, magnetic legs about 130 mm, where this measure is not significantly exceeded.
  • the magnetic rail brake should be noted that when the Excitation coil as a high-performance coil whose excitation current is approx. 40 amperes can be increased, which in about a 50% higher rated current in Comparison to the conventional magnetic rail brakes means. Furthermore, by choosing suitable insulating materials, the filling factor of the magnetic coil is extremely large can be selected, creating the geometric dimensions of the magnetic rail brake be influenced favorably. It is advisable not to use the pole shoe width larger than 72 mm, because this width is roughly the width of the rail corresponds.
  • Fig.1 the bobbin case is in a perspective view shown.
  • the bobbin case 1 is used to hold the to achieve of the necessary electromagnetic flux required Windings 6.
  • the oval or can be rectangular are evenly spaced Partitions 10 distributed and on the bobbin case 1 in their positions fixed.
  • the magnetic force flow absorbing Pole shoe 3 inserted into the central opening 9, with its Legs overlaps the lower half of the bobbin case.
  • the two legs 3 formed as separate parts Pole shoes are secured by screws 12 which secure the web part 2 penetrate, so firmly and permanently connected to each other that the simply available joint even after long periods of operation no disadvantageous increase in magnetic resistance is.
  • the thickness of the partitions 10 is in terms of the size of the forces to be absorbed approx. 8 mm, their distance from the center line to The center line is approx. 100 mm each.
  • An exemplary Formation of the pole shoes is with reference to Figures 2a and 2b described in more detail below.
  • Fig.2a is a link of the bobbin case 1 in its front view with the bobbin case and the turns 6 therein shown.
  • the metallic core of the coil 6 to be magnetized consists in principle of two legs 3, the U-shaped one Web 2 are rigidly connected and are shaped so that the The ends of the legs are within a few mm of one another with their inner surfaces come.
  • the distance between the lower parts 13 of the legs 3 is approx. 12 mm and should not be far for physical reasons be undercut.
  • the total width of both leg ends 13 plus the space of approximately 12 mm is 72 mm in the present Embodiment, which in some ways is an optimal measure represents.
  • the bobbin 1 or bobbin case serves the Turns of the excitation coil in a mechanically stable border record and also against environmental influences such as moisture protect.
  • an end plate 8 is used, which in close Contact with the turns on the last layer of the excitation coil 6 is placed and welded to the sides with the coil carrier 1 becomes. This creates a large amount of heat, which may damage the insulation of the windings.
  • metallic become in the upper corners of the solenoid Angle plates 7 placed on the windings at a suitable point, see above that point heat occurs relatively evenly on a Large number of turns is transmitted, so that not the entire occurring amount of heat must be derived from a point.
  • the Filling factor of the coil 6 By consistently using modern insulation materials, the Filling factor of the coil 6 compared to the previous embodiment be significantly increased. Through this measure, the Dimensions of the bobbin case or bobbin 1 considerable be reduced.
  • the free end of the leg 3 is opposite his approach on the web part 2 offset inwards, so that it Center line a distance of approx. 6 mm and up to opposite leg has a distance of 10 mm.
  • the Cross section of the leg is substantially rectangular and has a width of about 35 mm at the height of the magnetic coil. At this The cross-sectional area is largest at the point and tapers off down to the end of pole shoes.
  • pole shoes 3 and Links according to the invention in the coil box 1 is particularly good for the manufacture of the pole pieces 3 or at least their lower ones Wear sections suitable that the to the surfaces 11 subsequent vertical area of the legs grasp and in generally consist of steel.
  • Wear sections suitable that the to the surfaces 11 subsequent vertical area of the legs grasp and in generally consist of steel.
  • the pole pieces Steel can cause the contact length of the pole pieces to weld to lead. To avoid these welds it can be useful be on the extension of the thighs near her rail Area in the direction of the rail axis.
  • leg sections can also be asymmetrical be trained.
  • the lower one, adjoining the surfaces 11 Section of the two combined into a U-shaped structure Leg 3 is skimmed laterally by different dimensions, but with a mutual distance of about 12 mm remains.
  • the bobbin case is laterally offset over the rail.
  • Figure 2 is a partial sectional drawing along the in Fig.1 Section line A-B shown. It can be seen from this that the Foot 13 of the leg 3 has a length of approximately 90 mm.
  • Figure 3 is a graphical representation in which the relationship between adhesive force and flooding of the iron core on the one hand, or the relationship between electrical power and flow on the other hand shown for the optimized magnetic rail brakes are.
  • the electrical power (Pe) is in (kW) is shown as a function of the flow (kA), which is about 45 Ampere nominal current is about 1.45 kW.
  • the dash-dotted curve (Pe) represents the electrical power. It shows a in the lower area flatter rise than in the upper range. That depends directly on the characteristic of the magnetization of the core together, which at low currents through the coil 6 relatively stronger is magnetized as in the upper saturation range.
  • the solid curve (F H ) represents the adhesive force 15 of the weight-optimized magnet Nb.Gl.
  • the solid curve (F H ) represents the adhesive force 15 of the weight-optimized magnet Nb.Gl.
  • the optimized according to the invention stands out Magnetic rail brake by a relatively small weight, one low height and economically justifiable manufacturing and Material costs, with an adhesive force of 85 kN at a electrical output of 1.45 kW is guaranteed.
  • the magnetic rail brake consists essentially of one Bobbin and several links, which are separated by partitions (10) are separated from each other, the links consisting of two magnetic Pole shoes (3) exist and rigidly with one another with a web part (2) are connected.
  • the magnetic rail brake stands out in particular due to their low overall height and their relatively small size Weight off.
  • the nominal current is around 40 amperes a nominal power of about 1.45 kW.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)
  • Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)

Claims (10)

  1. Frein magnétique sur rail comportant des pièces polaires (3) en forme de U en coupe transversale, symétriques ou dissymétriques, dont les branches métalliques et magnétiques courbes délimitent au centre une cavité (4), dans laquelle est inséré un corps adapté d'une bobine (6) pourvu d'enroulements, qui entoure la partie transversale (2) des pièces polaires (3), caractérisé en ce qu'au niveau des deux coins supérieurs de la bobine (6), est disposée, au-dessus des enroulements, une cornière métallique (7), qui répartit uniformément une chaleur ponctuelle lors du soudage d'une tôle de fermeture (8).
  2. Frein magnétique sur rail selon la revendication 1, caractérisé en ce que la cornière métallique (7) est formée d'un matériau bon conducteur de la chaleur, tel que le cuivre (Cu).
  3. Frein magnétique sur rail selon la revendication 1, caractérisé en ce que l'isolant des enroulements de la bobine (6) est extrêmement mince, afin que le coefficient de remplissage soit élevé.
  4. Frein magnétique sur rail selon la revendication 1, caractérisé en ce que la largeur des pièces polaires n'est pas supérieure à 72 mm et la hauteur des pièces polaires est située entre 10 et 20 mm.
  5. Frein magnétique sur rail selon la revendication 1, caractérisé en ce que l'écartement des pièces polaires dans la direction transversale du rail n'est pas supérieur à 12 mm.
  6. Frein magnétique sur rail selon l'une des revendications précédentes, caractérisé en ce que la bobine magnétique (6) est une bobine de grande puissance, présentant un coefficient de remplissage extrêmement favorable.
  7. Frein magnétique sur rail selon la revendication 6, caractérisé en ce que la tension de service des électroaimants est égale à U = 110 volts et deux bobines magnétiques sont branchées respectivement en série.
  8. Frein magnétique sur rail selon la revendication 1, caractérisé en ce que la force d'adhérence est égale à environ 85 kN.
  9. Frein magnétique sur rail selon l'une des revendications précédentes, caractérisé en ce que les pièces polaires (3) sont dotées d'un gradin tourné vers l'intérieur, dans la région située au-dessous de la partie transversale (2), et les pièces polaires (3) possèdent, au voisinage du corps (1) de la bobine, une épaisseur d'environ 35 mm dans la direction transversale à l'axe du rail.
  10. Frein magnétique sur rail selon l'une des revendications précédentes, caractérisé en ce que les pièces polaires (3) possèdent, dans leur partie inférieure, des deux côtés, dans la direction de l'axe du rail, une longueur d'environ 20 mm, depuis la surface inférieure d'application (11) jusqu'à la courbure de la surface extérieure des pièces polaires (3).
EP93109865A 1992-06-23 1993-06-21 Dispositif de frein magnétique sur rail Expired - Lifetime EP0575935B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9208380U DE9208380U1 (de) 1992-06-23 1992-06-23 Magnetschienenbremse
DE9208380U 1992-06-23

Publications (2)

Publication Number Publication Date
EP0575935A1 EP0575935A1 (fr) 1993-12-29
EP0575935B1 true EP0575935B1 (fr) 1998-02-18

Family

ID=6880829

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93109865A Expired - Lifetime EP0575935B1 (fr) 1992-06-23 1993-06-21 Dispositif de frein magnétique sur rail

Country Status (4)

Country Link
EP (1) EP0575935B1 (fr)
JP (1) JPH0678517A (fr)
AT (1) ATE163282T1 (fr)
DE (2) DE9208380U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1022885C2 (nl) 2003-03-10 2004-09-13 Walker Europ Holding B V Elektrisch bedienbare magnetische railreminrichting, alsmede langs een of meer rails beweegbare inrichting voorzien van een railreminrichting.

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004018008B3 (de) * 2004-04-14 2005-12-22 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Magnetschienenbremsvorrichtung mit flach bauendem Bremsmagneten
CN102991528A (zh) * 2012-10-31 2013-03-27 镇江电磁设备厂有限责任公司 一种磁轨制动电磁铁
DE102017006736B4 (de) 2017-07-17 2024-10-02 Knorr-Bremse Gesellschaft Mit Beschränkter Haftung Gliedermagnetschienenbremsvorrichtung eines Schienenfahrzeugs mit elektrischer Anschlusseinrichtung an den Endgliedern
DE102017006732A1 (de) * 2017-07-17 2019-01-17 Knorr-Bremse Gesellschaft Mit Beschränkter Haftung Magnetschienenbremsvorrichtung eines Schienenfahrzeugs mit vergrößertem Wickelraum

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE662235C (de) * 1934-03-02 1938-07-08 Aeg In einem Metallgehaeuse eingeschlossene, mit Isolierung umgebene Spule fuer Schienenbremsmagnete
JPS5288291A (en) * 1976-01-19 1977-07-23 Hitachi Ltd Process and apparatus for regeneration of activated carbon
DE2720815A1 (de) * 1977-05-09 1978-11-23 Knorr Bremse Gmbh Magnetschienenbremse
DE2752016C2 (de) * 1977-11-22 1982-04-01 Knorr-Bremse GmbH, 8000 München Erregerspule für Schienenbremsmagnete

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1022885C2 (nl) 2003-03-10 2004-09-13 Walker Europ Holding B V Elektrisch bedienbare magnetische railreminrichting, alsmede langs een of meer rails beweegbare inrichting voorzien van een railreminrichting.

Also Published As

Publication number Publication date
DE9208380U1 (de) 1992-08-13
DE59308153D1 (de) 1998-03-26
ATE163282T1 (de) 1998-03-15
JPH0678517A (ja) 1994-03-18
EP0575935A1 (fr) 1993-12-29

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