EP0087027B1 - Frein ferroviaire à aimant permanent - Google Patents

Frein ferroviaire à aimant permanent Download PDF

Info

Publication number
EP0087027B1
EP0087027B1 EP83101064A EP83101064A EP0087027B1 EP 0087027 B1 EP0087027 B1 EP 0087027B1 EP 83101064 A EP83101064 A EP 83101064A EP 83101064 A EP83101064 A EP 83101064A EP 0087027 B1 EP0087027 B1 EP 0087027B1
Authority
EP
European Patent Office
Prior art keywords
permanent magnets
permanent
permanent magnet
rail brake
pole pieces
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
Application number
EP83101064A
Other languages
German (de)
English (en)
Other versions
EP0087027A1 (fr
Inventor
Georg Mächler
Robert Leutwyler
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.)
Rheinmetall Air Defence AG
Original Assignee
Werkzeugmaschinenfabrik Oerlikon Buhrle 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
Priority to PL23978082A priority Critical patent/PL137475B1/pl
Application filed by Werkzeugmaschinenfabrik Oerlikon Buhrle AG filed Critical Werkzeugmaschinenfabrik Oerlikon Buhrle AG
Priority to AT83101064T priority patent/ATE19218T1/de
Publication of EP0087027A1 publication Critical patent/EP0087027A1/fr
Application granted granted Critical
Publication of EP0087027B1 publication Critical patent/EP0087027B1/fr
Expired 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 invention relates to a permanent magnet rail brake, with a number of permanent magnets arranged one behind the other and with a number of ferromagnetic pole pieces arranged one behind the other.
  • magnets of alternating polarity in the braking direction are arranged, the pole body of which consists of at least two ferromagnetic pole pieces arranged one behind the other, between each of which an air gap is provided.
  • the pole pieces have a triangular cross section.
  • the magnets are arranged on their side surfaces and a wear body is arranged on their bottom surfaces.
  • This known rail brake has the disadvantage that a large number of magnets are required and the entire rail brake is therefore large and heavy. Another disadvantage is that the magnetic flux cannot be completely short-circuited due to the displacement of the magnets and the rail brake cannot therefore be completely switched off. In order to completely switch off any braking effect while driving, it is therefore necessary to lift the braking device sufficiently far from the rail.
  • the object is achieved to create a smaller and lighter rail brake by suitably arranging the magnetic fields.
  • the permanent magnet rail brake with which this object is achieved is characterized in that the poles of all permanent magnets are arranged in the same direction in the braking direction, that the number of pole pieces is twice as large as the number of permanent magnets, so that a permanent magnet is assigned to every second pole piece .
  • the permanent magnets are preferably connected to one another in an articulated manner and slidably arranged between the pole pieces and a yoke plate.
  • the permanent magnets are fastened in hinged frames.
  • the wear bodies are preferably mounted with limited displacement in a housing of the rail brake with the aid of screws.
  • the number and size of these magnets can advantageously be reduced by using suitable materials for the permanent magnets.
  • the arrangement according to the invention of the permanent magnets finally makes it possible to completely short-circuit the magnetic flux by moving the permanent magnets and to switch off the braking effect completely without the braking device having to be lifted far from the rail.
  • the permanent magnet rail brake 10 has a housing 11 which contains a number of transverse walls 18 and in which there are a number of permanent magnets 12.
  • a twice as large number of pole pieces 13 is arranged below the permanent magnets 12, i. H.
  • a permanent magnet 12 is assigned to every second pole piece 13.
  • Each pole piece 13 and one wear body 14 together form a pole piece 13, 14.
  • the wear bodies 14 are fastened to a limited extent in the housing 11 by means of screws 15 and nuts 16. The displaceability of the wear body 14 is ensured in that the wear body 14 has a bore 17, the diameter of which is larger than the diameter of the screw 15.
  • the transverse walls 18 of the housing 11 also protrude between the pole pieces 13, as can be seen in particular from FIGS. 2 and 3.
  • each permanent magnet 12 is surrounded by a magnetic grid plate or a frame 19.
  • These frames 19 are hinged together.
  • a projection 23 of one frame 19 projects into a recess 24 of the adjacent frame 19 and a rod 20 connects the two adjacent frames 19 to one another in a hinge-like manner.
  • 1 and 2 there is a yoke plate 21 above the permanent magnets 12.
  • the frames 19 with the permanent magnets 12 are arranged according to FIG. 2 in the direction of the double arrow A relative to the pole pieces 13 in the housing 11. When displaced, the frames 19 slide on two rails 22, which are only shown in FIG. 1.
  • the device for moving the frame 19 is not shown in the drawing.
  • a hydraulically, pneumatically or electrically actuated piston or eccentric is suitable for this device.
  • Compression springs can exert a force on the return plate 21, as a result of which the return plate 21 is pressed against the frame 19 and this is pressed against the pole piece 13 via the rails 22.
  • the pole piece 13 is supported on the screw 15 via the wear body 14.
  • the wear bodies 14 slide on the rail 25. Unevenness in the rail can thus be absorbed by the compression springs (not shown) mentioned, each individual wear body 14 being able to rise and lower independently of the adjacent wear body 14, insofar as this allows the play between screw 15 and bore 17 of the wear body 14.
  • the braking force can be changed by shifting the permanent magnets 12 relative to the pole pieces 13, i. H. be enlarged or reduced.
  • the braking force is greatest and if the permanent magnets 12 are located precisely above the transverse walls 18, the braking force disappears completely.
  • the permanent magnets 12 are fastened in a suitable manner in the frame 19; this makes it possible, on the one hand, to provide a play between the permanent magnet 12 and the return plate 21 and, on the other hand, a play between the permanent magnet 12 and the pole piece, so that the friction between the permanent magnet 12 when the permanent magnets 12 are displaced and yoke plate 21 on the one hand and between permanent magnet 12 and pole piece on the other hand is not too large.
  • this game should not be too big to keep losses in the magnetic flux as small as possible.

Landscapes

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

Claims (4)

1. Frein ferroviaire à aimants permanents (10) comportant un certain nombre d'aimants permanents (12) disposés l'un à la suite de l'autre et un certain nombre de pièces polaires (13) ferromagnétiques et de pièces d'usure (14) disposées les unes à la suite des autres, caractérisé en ce que les pôles de tous les aimants permanents (12) sont disposés dans le même sens, en ce que le nombre de pièces polaires (13) est double de celui des aimants permanents (12), de sorte qu'à chaque seconde pièce polaire (13) soit associé un aimant permanent et en ce que les pièces polaires (13) sont prévues à la manière de plaques entre les pièces d'usure (14) et les aimants permanents (12).
2. Frein ferroviaire à aimants permanents (10) selon la revendication 1, caractérisé en ce que les aimants permanents (12) sont reliés de façon articulée les uns aux autres et sont montés coulissants entre les pièces polaires (13) et une plaque de retour (21).
3. Frein ferroviaire à aimants permanents (10) selon la revendication 2, caractérisé en ce que les aimants permanents sont fixés à des châssis (19) reliés de façon articulée.
4. Frein ferroviaire à aimants permanents (10) selon la revendication 1, caractérisé en ce que les pièces d'usure (14) sont montées de façon coulissante, limitée, à l'aide de vis (15) dans un boîtier (11) du frein ferroviaire (10).
EP83101064A 1982-02-24 1983-02-04 Frein ferroviaire à aimant permanent Expired EP0087027B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL23978082A PL137475B1 (en) 1982-02-24 1982-12-27 Track brake with permament magnets
AT83101064T ATE19218T1 (de) 1982-02-24 1983-02-04 Dauermagnetschienenbremse.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1126/82 1982-02-24
CH112682 1982-02-24

Publications (2)

Publication Number Publication Date
EP0087027A1 EP0087027A1 (fr) 1983-08-31
EP0087027B1 true EP0087027B1 (fr) 1986-04-16

Family

ID=4203095

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83101064A Expired EP0087027B1 (fr) 1982-02-24 1983-02-04 Frein ferroviaire à aimant permanent

Country Status (3)

Country Link
EP (1) EP0087027B1 (fr)
DE (1) DE3362998D1 (fr)
NO (1) NO153291C (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR112014001502A2 (pt) * 2011-07-28 2017-02-14 Knorr-Bremse Ges Mit Beschränkter Haftung dispositivo para aplicar, pelo menos, um impulso elétrico, pelo menos, em uma bobina elétrica de um freio de trilho de um veículo sobre trilhos
JP7006528B2 (ja) * 2018-07-10 2022-01-24 日本製鉄株式会社 渦電流式レールブレーキ装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1123359B (de) * 1959-07-23 1962-02-08 Max Baermann Magnetische Schienenbremse

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190919098A (en) * 1909-08-19 1909-12-23 Dick Kerr And Company Ltd Improvements in or relating to Electromagnetic Brakes.
BE429818A (fr) * 1937-09-21
BE470306A (fr) * 1946-08-10
DE971289C (de) * 1951-02-13 1959-01-08 Max Baermann Durch die Wirkung eines Magnetfeldes betaetigte Bremse
DE1000850B (de) * 1953-04-13 1957-01-17 Robert Hanning Elektromagnetische Schienenbremse
DE1021410B (de) * 1953-09-28 1957-12-27 Robert Hanning Elektromagnetische Schienenbremse
CH380189A (de) * 1960-04-20 1964-07-31 Knorr Bremse Gmbh Betriebsanzeigevorrichtung für Schienenbremsmagnete
DE2340470A1 (de) * 1973-08-10 1975-02-20 Knorr Bremse Gmbh Schienenbremsmagnet fuer schienenfahrzeuge
ES433630A1 (es) * 1974-01-31 1976-12-01 Mr Horst Knapp Zapata de frenado para un dispositivo de freno.
DE2638133C2 (de) * 1976-08-25 1986-05-22 Baermann, Horst, 5064 Rösrath Stufenlos regelbare verschleißfreie dauermagnetische Wirbelstrom- und/oder Hysteresebremse, vorzugsweise für Schienenfahrzeuge

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1123359B (de) * 1959-07-23 1962-02-08 Max Baermann Magnetische Schienenbremse

Also Published As

Publication number Publication date
NO153291C (no) 1986-02-19
DE3362998D1 (en) 1986-05-22
NO153291B (no) 1985-11-11
NO830060L (no) 1983-08-25
EP0087027A1 (fr) 1983-08-31

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