EP2983942A2 - Frein à courant de foucault permettant de freiner un élément tournant, en particulier un arbre, comportant au moins un disque de rotor, et engin pourvu d'un tel frein à courant de foucault - Google Patents

Frein à courant de foucault permettant de freiner un élément tournant, en particulier un arbre, comportant au moins un disque de rotor, et engin pourvu d'un tel frein à courant de foucault

Info

Publication number
EP2983942A2
EP2983942A2 EP14728148.9A EP14728148A EP2983942A2 EP 2983942 A2 EP2983942 A2 EP 2983942A2 EP 14728148 A EP14728148 A EP 14728148A EP 2983942 A2 EP2983942 A2 EP 2983942A2
Authority
EP
European Patent Office
Prior art keywords
eddy current
current brake
disk
disc
rotor
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.)
Withdrawn
Application number
EP14728148.9A
Other languages
German (de)
English (en)
Inventor
Randolf Mock
Volker Schmitt
Andreas Seiwald
Thomas Vontz
Stefan Zebunke
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP2983942A2 publication Critical patent/EP2983942A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L7/00—Electrodynamic brake systems for vehicles in general
    • B60L7/28—Eddy-current braking
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
    • H02K49/02—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type
    • H02K49/04—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type of the eddy-current hysteresis type
    • H02K49/046—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type of the eddy-current hysteresis type with an axial airgap
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2200/00—Type of vehicles
    • B60L2200/26—Rail vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

Definitions

  • Eddy current brake for braking a rotating element, in particular a shaft, with at least one rotor disk and arrangement with such an eddy current brake
  • the invention relates to an eddy current brake for braking ei ⁇ nes rotating element, in particular a shaft, with ⁇ at least one rotor disk.
  • the two stators are four disk-shaped rotors associated with each of the two stators is arranged in each case between two of the disc-shaped rotors in such a way that two of the disc-shaped Roto ⁇ reindeer, which are referred to herein as rotor halves adjacent in the axial direction and in particular in their radially inner annular portion In their radially outer annular region, the two rotor halves are arranged with light axial distance from one another., In each of the four disc-shaped rotors are under the action of Inhomogeneous magnetic fields generated by the stators induced eddy currents.
  • the material of the rotor disks must be chosen so that their strength and rigidity withstand the applied loads, in particular the interpretation of high loads often at the expense of magnetic Permeability and electrical conductivity goes.
  • the invention is based on the object of specifying an improved with respect to this disadvantage generic eddy current brake.
  • This problem is solved in the vortex ⁇ power brake according to the invention with the features of claim 1, characterized in that the at least one rotor disk has a first dividing disk and a second dividing disk, wherein the two dividing disks differ with respect to the material from which they are formed.
  • an eddy current brake for Ver ⁇ addition is made, combined with the useful properties of two different materials of graduated disks for different functional purposes with advantage who can ⁇ that the eddy current brake of example, both high at over low speeds rotating element has a high braking torque at the same time high Fes ⁇ activity and high rigidity.
  • the first dividing plate one side of which forms a statorzugewandte Au ⁇ Hzseite the rotor disc
  • a higher magnetic permeability and / or a higher electrical conductivity than the second part comprises disc.
  • the second dividing disk whose ei ⁇ ne page forms a statorabgewandte outside of the rotor disk, a higher mechanical strength and / or a hö ⁇ here mechanical stiffness than the first of the dividing disk has.
  • the first partial disk consists of pure iron, so that in particular the magnetic conductivity of the rotor disc and thus the recoverable with the eddy current brake torque are optimized over all speeds.
  • the second part disc made of steel, so that the second partial plate is formed capable of stabilizing the first partial plate and thus the Ro ⁇ torin to give optimum strength and rigidity as a whole.
  • the ticket ⁇ bend thickness of the first part of disc corresponds to at least the skin depth of the acting in braking operation on the stator facing the outside of the Ro ⁇ torrange electromagnetic field.
  • the ticket ⁇ bendicke the first partial plate is designed so that in the second partial disc take place no magnetic flux and no eddy current ⁇ activity.
  • the second dividing disk is cast onto the first dividing disk, since it can thus be ensured that the side of the second dividing disk facing the first dividing disk is completely connected to the first dividing disk.
  • the second sectionschei ⁇ be optimally supports the first part of the disc and stiffened.
  • the second partial plate can but also by other attachment Be ⁇ species - for example, by riveting, or by clicking or clamping connections - to be attached to the first part of the disc.
  • the first dividing disk has the contact surface on its side facing the second dividing disk has contours enlarging to the second part of the disc.
  • contours can be forged to the first part disc.
  • the contours comprise concentric to the rotational axis of the rotor disc, wave-shaped structure, with a flat recess breaks through the contour starting from the Rotati ⁇ onsachse in the radial direction, so that no air is trapped on the first code wheel when casting the second part of the disc. It is also considered advantageous if the second part of the disc ⁇ the edge of the first part of the disc in the direction of Ro ⁇ tationsachse the rotor disc engages in order to better protect the first part ⁇ slice from mechanical stress.
  • the second part disc is provided on its side facing away from the first part disc side with a support which is adapted to the torque transmitting connection with the rotating element.
  • the rotor disk is additionally stiffened by the carrier.
  • the invention also relates to an arrangement with a rotating element and with an eddy current brake for braking the rotating element, which is designed according to one of claims 1 to 13.
  • Such an arrangement may ⁇ example, be a rail vehicle, wherein the braked ro ⁇ animal element may be the wheel shaft of a wheel set.
  • the invention will be explained in more detail below with reference to Figures 1 to 6.
  • the show a schematic representation of a erfindungsge ⁇ MAESSEN arrangement in the form of a rail vehicle with rotating shafts in the form of axles and eddy current brakes according to the invention in a first embodiment, a section of the schematically shown in Figure 1 first embodiment of the erfindungsge MAESSEN eddy current brake in a larger view, the
  • FIG. 3 shows a further view of the first embodiment of the eddy current brake according to the invention shown in FIG. 2 and FIG. 3
  • FIG. 1 shows an arrangement 1 according to the invention in the form of a rail vehicle.
  • the rail vehicle has two ro ⁇ animal elements 2 in the form of shafts (axles). At the shafts 2, two wheels 3 are fixed.
  • the Wel ⁇ len 2 are rotatably supported by bearings, not shown here on a bogie 4 of the rail vehicle.
  • Inventive ⁇ proper arrangement 1 also comprises rotating eddy current brake for braking the rotating shafts 2 in a first Embodiment 5.
  • FIG. 1 shows an arrangement 1 according to the invention in the form of a rail vehicle.
  • the rail vehicle has two ro ⁇ animal elements 2 in the form of shafts (axles). At the shafts 2, two wheels 3 are fixed.
  • the Wel ⁇ len 2 are rotatably supported by bearings, not shown here on a bogie 4 of the rail vehicle.
  • Inventive ⁇ proper arrangement 1 also comprises rotating eddy current brake for braking the rotating shafts 2 in a first Embodiment 5.
  • This first embodiment of the rotating eddy current brake has a disc-shaped design with two rotors 6 (so-called external rotor rotors) connected in a rotationally fixed manner to the braked shaft 2 and a stator in which the stator is at a small distance in the axial direction of the axis of rotation A of the shaft 2 is arranged to the rotors between the rotors 6.
  • a pivot bearing 8 of the stator 7 forms a
  • the stator 7 is a torque arm 10 on the bogie 4 supported. Instead of the two rotors 6 shown here but only one rotor could be provided.
  • the stators 7 of the rotating eddy current brakes 5 are each provided with at least one exciting coil 11 for generating a spatially inhomogeneous magnetic field.
  • the at least one excitation coil 11 is fed by an electrical energy source 12. Connections of the at least one exciter coil 11 of the stators 7 are connected via connections 13, 14 to the electrical energy source 12. In the course of the connections 13, 14, a switch 15 may be arranged.
  • the in braking operation - induced spatially inhomogeneous magnetic field generated in the at ⁇ parent rotating rotors 6 eddy currents induce the inhomogeneous magnetic field of opposite magnetic field and thus the rotors 6 braking - in other words, when energized, the at least one excitation coil 11 by the electric power source 12 Effect force.
  • the stators 7 are provided with claw pole rings, not shown here, in which when the exciter coils 11 are energized, a functional polarity relationship is established, that is, alternately positive and negative poles are generated .
  • the eddy currents are induced during their rotation, which brake the rotors 6 depending on the excitation power.
  • the eddy current brake according to the invention is in particular not limited to the illustrated design with regard to the number of rotors 6 and the stators 7.
  • an alternative usionnförmi ⁇ ge design of the rotating eddy current brake according to the invention not shown here could have two outer stators, between which in the axial direction of the axis of rotation of the shaft at a small distance to the stators a rotor (a so-called inner rotor rotor) is arranged.
  • ge Stand- te disk-shaped design of the rotary eddy current brake according to the invention could have three rotors and two stators, wherein the rotors and the stators in the axial direction of the axis of rotation of the shaft with spacing alternately publishedeinan ⁇ are arranged.
  • each of the rotors 6 has a rotor disk 20 and one via fastening means 21, 22, 23 in the form of screw connections with the rotor disk
  • the carrier 24 is used for torque-transmitting connection of the rotor disk 20 with the shaft 2, and has for this purpose in an inner ring portion mounting holes 25, which mounting holes 26 of a flange 27 of the shaft 2 are assigned, so that the carrier 24 and the shaft 2 over here not shown further fastening ⁇ means in the form of screw rotatably connected to each other.
  • the carrier 24 forms a ring with a receiving opening 28 for receiving the shaft 2 and with radially projecting support arms 29 in the free end portions each have two further mounting holes 30 (see Figure 2) for receiving the fastening means 21, 22 are formed.
  • the rotor disk 20 consists of two partial disks 31, 32.
  • the two partial disks 31, 32 differ in terms of the material from which they are formed.
  • the first Partial disk 31 fulfills a completely different function than the second part disk 32.
  • the rotor disk 20 constructed from the two partial disks 31, 32 is therefore designed such that it fulfills two functions separately. Namely on the one hand a good magnetic permeabilization ⁇ ty and good electrical conductivity, and on the other hand a good mechanical strength and good mechanical rigidity.
  • 31 includes the first partial disk, whose one side is 33 facing the stator 7, thus forming a statorzugewandte ⁇ outer side of the rotor disc 20, a higher magnetic permeability and a higher electrical conductivity than the second part of disc 32.
  • the second partial disk 32 toward ⁇ has a higher mechanical strength and a higher ⁇ mechanical stiffness than the first part of disk 31.
  • the first part disc 31 is made of pure iron and the second part disc 32 is made of steel.
  • the designated D.31 disc thickness of the first part of disc 31 is dimensioned so that it has at least the skin depth of the brake ⁇ operation on the statorzugewandte outside of the Rotor disc 20 corresponding electromagnetic field corresponds and the magnetic flux and the eddy current activity in Bremsbe ⁇ drive preferably completely within the first part 31 take place disc.
  • the disk thickness d.31 of the first partial disk 31 is at least 5 mm, but preferably more than 10 mm. In the first exemplary embodiments shown, the disk thickness d.31 of the first partial disk 31 is 18 mm.
  • the slice thickness D.32 of the second code wheel 32 is be ⁇ measure that the first part plate 31 - the given Be ⁇ loads corresponding to - stiffened.
  • the slice thickness d.32 of the second slice 32 is less than the slice thickness D.31 of the first dividing plate 31 so as embodiments shown also in the direct wei ⁇ 105; 205 and 305 of the eddy current brake according to the invention is the case.
  • the second dividing disk 32 is cast on the first dividing disk 31 on ⁇ .
  • FIGS. 4 to 6 show sections of three further embodiments 105; 205 and 305 of the eddy current brake according to the invention. There are parts with those of the first
  • Embodiment 5 correspond to this or substantially, with the same, but by 100; 200 or 300 provided higher reference numerals. Also in these three other embodiments 105; 205 and 305, each of the rotors 106; 206; 306, a rotor disk 120; 220; 320 and connected via a fastening means in the form of screw with the rotor disc carrier.
  • the rotor disks 120; 220 and 320 are also made depending ⁇ wells of two sub-slices 131, 132; 231, 232 and 331, 332, wherein the first part discs 131; 231 and 331 made of pure iron and the second part discs 132; 232; 332 made of steel.
  • the second dividing disk is not limited in terms of their shape to the illustrated circular ring shape.
  • the annular disc-shaped second dividing disc could alternatively also be designed as a ring-shaped ring.
  • the second part of disc 132 is partially broken away Darge ⁇ represents.
  • the first th partial disc 131 on its second partial disk 132 supplied ⁇ facing side 134 contours 135a, 135b, 135e to which 131 increase the contact area of the first part to the second disk part ⁇ disc 132nd
  • contours 135a, 135b, 135e which are forged in the illustrated second embodiment 105 to the first part plate 131, have a to Rota ⁇ tion axis A of the rotor disc concentric, wavy structure and are starting from the axis of rotation A in the radial direction R of a flat recess 136 broken.
  • the planar recess 136 is required so that no air inclusions can form when casting the second dividing disk 132 against the first dividing disk 131.
  • first the first dividing disk 131 of pure iron is placed in a corresponding casting mold. Since ⁇ raufhin optionally also cast cooling fins and optionally also the carrier, the second part 132 and disc.
  • other Be ⁇ festistsarten remain for the connection of the two part discs, such as rivets, click or clamp connections, etc. reserved.
  • Other cohesive compounds, in particular a connection by hot isostatic pressing (HIPen) are advantageous alternatives.
  • the second dividing disk 232 overlaps the first dividing disk 231 at the edge in the direction of the axis of rotation A.
  • the thickness of the disk d.231 of the first dividing disk 231 is correspondingly radially outward Ring 237 is formed, so that the second dividing disk 232 includes the first part of disk 231 for their further stabilization.
  • the second part disk 332 is disposed on its side from the first part disk 331. turned side 338, which forms a statorabgewandte outside of the rotor disk 320, provided with cooling fins 339.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)

Abstract

Frein à courant de Foucault (5; 105; 205; 305) permettant de freiner un élément tournant (2), en particulier un arbre, pourvu d'au moins un disque de rotor (6; 106; 206; 306). Pour éviter que la solidité et la rigidité du disque de rotor ne l'emportent sur sa perméabilité magnétique et sa conductibilité électrique, ledit disque de rotor (6; 106; 206; 306) comporte une première partie de disque (31; 131; 231; 331) et une seconde partie de disque (32; 132; 232; 332), les deux parties de disque étant constituées d'un matériau différent. La présente invention concerne également un engin, en particulier un véhicule ferroviaire, pourvu d'un frein à courant de Foucault de ce type.
EP14728148.9A 2013-06-13 2014-05-28 Frein à courant de foucault permettant de freiner un élément tournant, en particulier un arbre, comportant au moins un disque de rotor, et engin pourvu d'un tel frein à courant de foucault Withdrawn EP2983942A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013211051.0A DE102013211051A1 (de) 2013-06-13 2013-06-13 Wirbelstrombremse zum Bremsen eines rotierenden Elementes, insbesondere einer Welle, mit zumindest einer Rotorscheibe und Anordnung mit einer derartigen Wirbelstrombremse
PCT/EP2014/061066 WO2014198541A2 (fr) 2013-06-13 2014-05-28 Frein à courant de foucault permettant de freiner un élément tournant, en particulier un arbre, comportant au moins un disque de rotor, et engin pourvu d'un tel frein à courant de foucault

Publications (1)

Publication Number Publication Date
EP2983942A2 true EP2983942A2 (fr) 2016-02-17

Family

ID=50884898

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14728148.9A Withdrawn EP2983942A2 (fr) 2013-06-13 2014-05-28 Frein à courant de foucault permettant de freiner un élément tournant, en particulier un arbre, comportant au moins un disque de rotor, et engin pourvu d'un tel frein à courant de foucault

Country Status (4)

Country Link
EP (1) EP2983942A2 (fr)
CN (1) CN105283343A (fr)
DE (1) DE102013211051A1 (fr)
WO (1) WO2014198541A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113193724B (zh) * 2021-04-30 2023-03-03 哈尔滨工业大学 低惯量宽速域永磁涡流制动器

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1026998A (fr) * 1950-10-17 1953-05-06 Perfectionnements aux freins électrodynamiques pour organes rotatifs
FR1119161A (fr) * 1953-11-25 1956-06-15 Electro Mecanique De Laveyron Perfectionnements apportés aux appareils à courants de foucault, tels notamment que les ralentisseurs
DE6917161U (de) * 1969-04-28 1969-09-18 Walter Schiffer Magnetkupplung
DE2027315A1 (de) * 1969-06-09 1970-12-17 Nervus Paris et Francis, Boulogne; Balagny, Jean, Orry-la-Ville; (Frankreich) i5.p5.7O " 7017757 "Wiroelstrom-Magnetitupplung
FR2102600A5 (fr) * 1970-08-11 1972-04-07 Sermag
FR2577357B1 (fr) 1985-02-11 1988-07-15 Labavia Perfectionnements aux ralentisseurs electriques
ES2036296T3 (es) * 1989-05-26 1993-05-16 Berger, Johann Disco rotorico para un freno por corrientes inducidas de foucault.
US5691587A (en) * 1993-05-21 1997-11-25 Magna Force, Inc. Magnetic centrifugal clutch
JP3444324B2 (ja) * 1995-11-30 2003-09-08 いすゞ自動車株式会社 永久磁石式渦電流減速装置
EP1338077B1 (fr) * 2000-11-27 2005-03-23 Lothar Kloft Ralentisseur, s'utilisant notamment comme dispositif de freinage ou de freinage auxiliaire pour vehicules ou similaires, en particulier vehicules ferroviaires
DE10114183A1 (de) 2000-11-27 2002-06-13 Lothar Kloft Retarder, insb. als Brems-o.Zusatzbremseinrichtung für Fahrzeuge o. dgl., insb. Schienenfahrzeuge
GB2484147A (en) * 2010-10-01 2012-04-04 Design Limtied Ets Electromechanical braking device

Also Published As

Publication number Publication date
CN105283343A (zh) 2016-01-27
WO2014198541A3 (fr) 2015-02-05
WO2014198541A2 (fr) 2014-12-18
DE102013211051A1 (de) 2014-12-18

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