AU675733B2 - Eddy current brake support device and undercarriage for railvehicle incorporating this device - Google Patents

Eddy current brake support device and undercarriage for railvehicle incorporating this device Download PDF

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Publication number
AU675733B2
AU675733B2 AU74361/94A AU7436194A AU675733B2 AU 675733 B2 AU675733 B2 AU 675733B2 AU 74361/94 A AU74361/94 A AU 74361/94A AU 7436194 A AU7436194 A AU 7436194A AU 675733 B2 AU675733 B2 AU 675733B2
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AU
Australia
Prior art keywords
support device
brake support
eddy current
beams
cooperating
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.)
Ceased
Application number
AU74361/94A
Other versions
AU7436194A (en
Inventor
Jean-Daniel Nast
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.)
Alstom Transport SA
Original Assignee
GEC Alsthom Transport SA
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 GEC Alsthom Transport SA filed Critical GEC Alsthom Transport SA
Publication of AU7436194A publication Critical patent/AU7436194A/en
Application granted granted Critical
Publication of AU675733B2 publication Critical patent/AU675733B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
    • B61F5/50—Other details
    • B61F5/52—Bogie frames
    • B61F5/523—Bogie frames comprising parts made from fibre-reinforced matrix material
    • 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
    • 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
    • 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
    • Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance

Landscapes

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

Description

f
AUSTRALIA
Patents Act COMPLETE SPECIFICATION
(ORIGINAL)
Class Int. Class Application Number: Lodged: Complete Specification Lodged: Accepted: Published: Priority Related Art: ~B~sdB o r o r r r Name of Applicant: GEC Alsthom Transport SA Actual Inventor(s): Jean-Daniel Nast Address for Service: PHILLIPS ORMONDE FITZPATRICK Patent and Trade Mark Attorneys 367 Collins Street Melbourne 3000 AUSTRALIA Invention Title: EDDY CURRENT BRAKE SUPPORT DEVICE AND UNDERCARRIAGE FOR RAIL VEHICLE INCORPORATING THIS DEVICE Our Ref 384923 POF Code: 1501/202864 The following statement is a full description of this invention, including the best method of performing it known to applicant(s):
I
EDDY CURRENT BRAKE SUPPORT DEVICE AND UNDERCARRIAGE FOR RAIL VEHICLE INCORPORATING THIS DEVICE BACKGROUND OF THE INVENTION e Field of the invention The present' invention concerns undercarriages for rail vehicles incorporating an Eddy current brake cooperating with a rail in which a drive device moves the braking body between a top rest position and a bottom active position and is in bearing engagement with the braking body through the intermediary of abutments, the drive device and these abutments being disposed on a longitudinal support of the chassis of the undercarriage.
Description of the prior art Patent EP-A-0 299 318 (DUEWAG) describes an undercarriage for rail vehicles which is within the field of the invention as previously defined.
A first teaching of this patent concerns a type of suspension, usually referred to as a "low articulation' stspension, in which there is a distance of only a few millimeters between the top of the rail and the braking body, which is secured to an undercarriage via coil springs. This small distance is t;avelled in response to triggering of the electrical current sent to the track brake and opposing the force of the coil springs with the result that the braking body presses on the rail. After release of the current the springs pull the braking body back to its rest position.
Another teaching of this patent concerns another type of track brake suspension known as a "high articulation" suspension, in which the distance between the top of the rail and the braking body is greater than the elastic travel of the coil springs. Drive devices are then used to lower and raise the braking body. These drive devices are connected to a longitudinal support of the chassis of the undercarriage which has no elastic -alll movement relative to the rail.
The undercarriage for rail vehicles which is the subject matter of the European patent mentioned above is characterized in that the braking body is fixedly locked in a horizontal plane, in its rest position, via a known abutment device and is suspended with vertical damping by disposing at least two elastic members between the abutment device and the longitudinal support.
This prior art patent also teaches the provision of a housing in the abutment of an undercarriage equipped with Eddy current brakes to limit the distance between the rail and the braking body when in an active position.
The present invention concerns an Eddy current brake support device and an undercarriage for rail vehicles incorporating this device.
Patent EP-A-0 299 318 (DUEWAG) describes an Eddy current braking body resting on a bogie chassis. The bogie chassis is mounted on axle boxes with no primary suspension. The Eddy current braking body is controllably moved and guided relative to the bogie chassis.
In the cited prior art the Eddy current braking body is also referenced to the bogie chassis.
A drawback of the Eddy current braking structure of the prior art is that the masses are fixed relative to the non-suspended mass of the axles.
Accordingly, an -object of -the ddy current bra support device of the invention is to make it sible to change reference between the braki ase and the non-braking phase with the f ity to suspend the braking mass in normal o ation.
Another o of the Eddy current brake support device he invention is to enable it to absorb all dermations t which it may be subjcted. TwS L_ I I SUMMARY OF THE INVENTION In one asoect the invention provides an eddy current brake support device including first and second half-beams which cooperate with each other via articulation means in order to absorb all deformations of said brake support device, wherein said articulation means includes a composite material crossmember disposed between said first and second half-beams.
In another aspect the invention provides an eddy current brake support device to which is fixed at least one linear eddy current brake shoe defining an airgap relative to the rail with which said linear shoe is associated, said brake support device including: a first half-beam, and a second half-beam, cooperating with each other via articulation means in order to absorb all deformations of said brake support device, wherein said articulation means includes a composite material crossmember disposed between said first and second half-beams; mans for displacing said brake support device vertically, and means for guiding vertical displacement of said brake support device, 20 cooperating with each other to define a non-braking phase during which said brake support device is raised and a braking phase during which said brake support device is lowered; and at least one bearing arm fastened to one end of said half-beams, S: the end of each bearing arm cooperating with reference means associated 25 therewith fastened to one of the axle boxes in order to impose a predetermined value on said airgap when said brake support device is in said braking phase.
In a further aspect the invention provides a rail vehicle undsrcarriage including an eddy current brake support device including first and second halfbeams which cooperate with each other via articulation means in order to absorb all deformations of said brake support device, wherein said articulation means includes a composite material crossmember disposed between said first and second half-beams.
In accordance with other preferred features of the brake support device of the invention: the crossmember may be of generally parallelepiped shape and have a generally parallelepiped-shape opening at its center; the crossmember may be made from carbon or glassfiber reinforced epoxy resin; the articulation means may include at least one elastic ball joint disposed between said first and second half-beams; at least one of the half-beams may have a generally T-shape structure including a longitudinal yoke and a radial arm, the elastic ball joint being disposed at the end of thB radial arm.
One advantage of the Edd' current brake support device of the invention is that it makes the braking equipment assembly mobile and minimizes its mass.
oeeoI S 15 Other features and advantages of the invention emerge from a reading of the following description of two preferred embodiments of the brake support S"device given with reference to the drawings, Brief Description of the Drawings Figure 1 is a diagrammatic side view of the prior art undercarriage 20 previously referred to and including an Eddy current braking body.
Figure 2 is a side view of an undercarriage including an Eddy current brake support device of the invention.
Figure 3 is a perspective view of the Eddy current brake support device of the invention in a first preferred embodiment of the invention.
S S 4~ V7-~ I C lr* Figure 4 is a cross-sectional side view of an elastic articulation used in the first preferred embodiment of the invention.
Figure 5 is a perspective view of the Eddy current brake support device of the invention in a second preferred embodiment of the invention.
Figure 6 is a cross-sectional plan view of a bearing arm disposed at the end of the half-beam.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The undercarriage including an Eddy current braking body of the previously cited prior art is shown in diagrammatic side view in figure i.
The braking body rests on a bogie chassis connected to the axle boxes.
15 The braking body is controllably moved and guided relative to the bogie chassis and referenced to the bogie chassis.
Figure 2 is a side view of the undercarriage including an Eddy current brake support device of the invention.
Figure 2 shows only one half-beam 2 of the brake support device including a yoke 14 under which is disposed an Eddy current shoe 9.
Vertical displacement means 10 and vertical guide means 11 for the brake support device are fastened to a bogie chassis A bearing arm 12 at one end at least of the yoke cooperates with a reference surface 17 in an axle box 18 of the rail vehicle bogie.
As is clear from the preceding description, and as will further become clear from the remainder of the description, the bogie chassis 5 is suspended from the bogie axles.
The brake support device is controllably movable relative to the mobile chassis 5. The position of the brake support device is referenced to the reference plane 17 which is not fixed with respect to the mobile chassis and is therefore not defined relative to a mobile structure.
Figure 3 is a perspective view of the Eddy current brake support device of the invention in a first preferred embodiment of the invention.
The Eddy current brake support device includes first and second half-beams 1 and 2.
The half-beams cooperate with each other via articulation means 3 in order to absorb all deformations of said brake support device.
By deformation is meant the deformations accompanying so-called track distortion movements, 15 transverse torsion and vertical rotation applied to the brake support device.
Linear Eddy current brake shoes 6, 7 are disposed under the Eddy current brake support device. Each linear brake shoe 6, 7 faces an associated rail 8, 9.
20 Each linear brake shoe 6, 7 and the associated rail 8, 9 define an airgap.
The brake support device also includes vertical S" displacement means 10 and vertical guide means 11.
*The vertical displacement means 10 and the vertical guide means 11 of the brake support device cooperate with each other to define a non-braking phase and a braking phase.
During the non-braking phase the brake support device is raised. During the braking phase the brake support device is lowered.
The vertical displacement means comprise four pneumatic jacks, for example.
The function of the vertical guide means is to absorb longitudinal loads applied to the brake support device.
I Finally, the brake support device includes at least one bearing arm 12 fastened to one end of the half-beams 1, 2.
In the first preferred embodiment of the invention shown in figure 3 the articulation means comprise at least one elastic ball joint 3 disposed between the first and second half-beams 1 and 2.
At least one of the half-beams has a generally T-shape structure. At least one of the half-beams then comprises a longitudinal yoke 13, 14 and a radial arm 16.
The bearing arms 12 are disposed at respective ends of the longitudinal yokes 13, 14 of each of the halfbeams 1, 2.
S 15 The ball joints are disposed at the respective free ends of the radial arms 15, 16 of each of the half-beams 1, 2.
Figure 4 is a sideways view in cross-section of an elastic articulation used in the first preferred 20 embodiment of the invention.
The elastic articulation comprises a ball joint 3 connecting the two half-beams 1, 2 constituting the Eddy current brake support device of the invention. To be more precise the ball joint 3 is fastened to the free end of the radial arm 15 of one of the half-beams and to the longitudinal yoke 13 of the other half-beam.
The ball joint 3 comprises an elastic; coupling made from rubber, for example, compressed between a base 21 fastened to the free end of the radial arm 15 and a shaft 22 fastened to the longitudinal yoke 13.
Figure 5 is a perspective view of the Eddy current brake support device of the invention in a second preferred embodiment of the invention, Components described previously are identified by the same reference numbers.
L LI-- The brake support device includes first and second half-beams 1 and 2 cooperating with each other via articulation means 3.
The Eddy current brake support device includes at least one linear Eddy current brake shoe 6, 7 defining an airgap with the rail 8, 9.
The brake support device also includes vertical displacement means 10 and vertical guide means 11.
Finally, the brake support device includes at least one bearing arm 12 fastened to one end of the half-beam 1, 2.
In the second preferred embodiment of the invention shown in figure 5 the articulation means comprise a crossmember 4 disposed between the first and second half- 15 beams 1 and 2.
For example, the crossmember 4 is of generally parallelepiped shape and optionally includes an opening 19 at the center also of generally parallelepiped shape.
The crossme.ber 4 is preferably made from a composite material such as carbon or glassfiber reinforced epoxy resin.
Figure 6 is a plan view in cross-section of a bearing arm 12 disposed at the end of the half-beams.
S. The bearing arm 12 is shown with the brake support device in the non-braking phase and in the braking phase S. and with the axle box in two different positions.
The end of each bearing arm 12 cooperates with associated reference means 17.
The reference means 17 is fastened to one of the axle boxes 18 and its essential function is to impose a predetermined value on the airgap when the brake support device is in the braking phase.
The Eddy current brake support device can be used on an undercarriage for rail vehicles, for example.

Claims (5)

  1. 2. Brake support device according to Claim 1 wherein the crossmember is of generally parallelepiped shape and has a generally parallelepiped-shape opening at its center.
  2. 3. Brake support device according to Claim 1 wherein the crossmember is made from carbon or glassfiber reinforced epoxy resin. eoeow S
  3. 4. Eddy current brake support device to which is fixed at least one linear eddy current brake shoe defining an airgap relative to the rail with which said linear shoe is associated, said brake support device including: a first half-beam, and S 20 a second half-beam, cooperating with each other via articulation means in order to absorb all deformations of said brake support device, wherein said articulation means includes a composite material crossmember disposed between said first and second half-beams; means for displacing said brake support device vertically, and means for guiding vertical displacement of said brake support device, cooperating with each other to define a non-braking phase during which said brake support device is raised and a braking phase during which said brake support device is lowered; and at least one bearing arm fastened to one end of said half-beams, the end of each bearing arm cooperating with reference means associated i' i9 therewith fastened to one of the axle boxes in order to impose a predetermined value on said airgap when said brake support device is in said braking phase. Rail vehicle undercarriage including an eddy current brake support device including first and second half-beams which cooperate with each other via articulation means in order to absorb all deformations of said brake support device, wherein said articulation means includes a composite material crossmember disposed between said first and second half-beams.
  4. 6. Eddy current brake support device substantially as herein described with reference to Figures 2-6 of the accompanying drawings.
  5. 7. Rail vehicle undercarriage substantially as herein described with reference to Figures 2-6 of the accompanying drawings. DATED: 9 December, 1996 PHILLIPS ORMONDE FITZPARICK Attorneys for: GEC ALSTHOM TRANSPORT SA I c rs o o o s o tii L'.j /1 ABSTRACT OF THE DISCLOSURE An Eddy current brake support device to which is fixed at least one linear Eddy current brake shoe defining an airgap relative to the rail with which the linear shoe is associated includes a first half-beam and a second half-beam cooperating with each other via an art: ulation device. The brake support device is moved vertically and guided during its vertical displacement by respective devices cooperating with each other. At least one bearing arm is fastened to one end of the half-beams, the end of each bearing arm cooperating with a reference device fastened to one of the axle boxes in order to impose a predetermined value on the airgap when the brake support device is in a braking phase. o e
AU74361/94A 1993-10-05 1994-09-30 Eddy current brake support device and undercarriage for railvehicle incorporating this device Ceased AU675733B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9311849A FR2710890B1 (en) 1993-10-05 1993-10-05 Support device for eddy current brake and undercarriage for a railway vehicle comprising such a device.
FR9311849 1993-10-05

Publications (2)

Publication Number Publication Date
AU7436194A AU7436194A (en) 1995-04-27
AU675733B2 true AU675733B2 (en) 1997-02-13

Family

ID=9451545

Family Applications (1)

Application Number Title Priority Date Filing Date
AU74361/94A Ceased AU675733B2 (en) 1993-10-05 1994-09-30 Eddy current brake support device and undercarriage for railvehicle incorporating this device

Country Status (12)

Country Link
EP (1) EP0646512A1 (en)
JP (1) JPH07170607A (en)
KR (1) KR950011258A (en)
AU (1) AU675733B2 (en)
BG (1) BG62043B1 (en)
BR (1) BR9403974A (en)
CA (1) CA2133615A1 (en)
FR (1) FR2710890B1 (en)
HU (1) HU217259B (en)
NO (1) NO943683L (en)
PL (1) PL305297A1 (en)
RU (1) RU2114750C1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2754599A1 (en) * 2013-01-09 2014-07-16 Bombardier Transportation GmbH Railway bogie provided with a movable electromagnetic driving or braking means
CN107539335A (en) * 2017-09-14 2018-01-05 中车青岛四方车辆研究所有限公司 Track train eddy-current brake and track train
CN107554550A (en) * 2017-09-14 2018-01-09 中车青岛四方车辆研究所有限公司 Track train eddy-current brake and track train
CN107628060A (en) * 2017-09-14 2018-01-26 中车青岛四方车辆研究所有限公司 Track train eddy-current brake and track train

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19619578A1 (en) * 1996-05-15 1997-11-20 Knorr Bremse Systeme Suspension of an eddy current brake on a bogie of a rail vehicle
DE19732482A1 (en) * 1997-07-29 1999-02-04 Sab Wabco Bsi Verkehrstechnik Magnetic braking device for rail vehicles
FR2967635B1 (en) 2010-11-22 2012-12-28 Alstom Transport Sa RAILWAY VEHICLE BOGIE COMPRISING AN ENGINE CURRENT BRAKING DEVICE
CN102431571B (en) * 2011-10-24 2014-04-16 南车株洲电力机车有限公司 Connecting device of magnetic track brake and magnetic track brake apparatus
CN112660191B (en) * 2021-01-06 2023-01-03 中车青岛四方机车车辆股份有限公司 Framework of bogie and bogie
CN113815669B (en) * 2021-11-01 2023-08-22 中车长春轨道客车股份有限公司 Bogie adopting carbon fiber material framework
CN114312895A (en) * 2022-01-20 2022-04-12 中车长春轨道客车股份有限公司 Axle box device for supporting eddy current brake mechanism for railway vehicle
CN114228771A (en) * 2022-01-20 2022-03-25 中车长春轨道客车股份有限公司 Bogie provided with eddy current brake mechanism
CN114228770A (en) * 2022-01-20 2022-03-25 中车长春轨道客车股份有限公司 Framework device provided with eddy current braking mechanism
CN116061698B (en) * 2023-04-06 2023-06-09 成都西交华创科技有限公司 High-temperature superconducting magnetic suspension system compatible with existing railway and transformation method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2280536A1 (en) * 1974-08-02 1976-02-27 Creusot Loire Linear inductor support for rail vehicle - has transverse reaction arms acting on opposed beams through flexible blocks
US4448131A (en) * 1979-12-22 1984-05-15 Messerschmitt-Bolkow Blohm Gesellschaft Mit Beschrankter Haftung Suspension system for rail vehicles

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Publication number Priority date Publication date Assignee Title
BE437261A (en) * 1938-12-08
DE3930873C1 (en) * 1989-09-15 1991-01-24 Messerschmitt-Boelkow-Blohm Gmbh, 8012 Ottobrunn, De

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2280536A1 (en) * 1974-08-02 1976-02-27 Creusot Loire Linear inductor support for rail vehicle - has transverse reaction arms acting on opposed beams through flexible blocks
US4448131A (en) * 1979-12-22 1984-05-15 Messerschmitt-Bolkow Blohm Gesellschaft Mit Beschrankter Haftung Suspension system for rail vehicles

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2754599A1 (en) * 2013-01-09 2014-07-16 Bombardier Transportation GmbH Railway bogie provided with a movable electromagnetic driving or braking means
CN107539335A (en) * 2017-09-14 2018-01-05 中车青岛四方车辆研究所有限公司 Track train eddy-current brake and track train
CN107554550A (en) * 2017-09-14 2018-01-09 中车青岛四方车辆研究所有限公司 Track train eddy-current brake and track train
CN107628060A (en) * 2017-09-14 2018-01-26 中车青岛四方车辆研究所有限公司 Track train eddy-current brake and track train

Also Published As

Publication number Publication date
JPH07170607A (en) 1995-07-04
BG62043B1 (en) 1999-01-29
CA2133615A1 (en) 1995-04-06
FR2710890A1 (en) 1995-04-14
HUT69545A (en) 1995-09-28
FR2710890B1 (en) 1995-11-10
KR950011258A (en) 1995-05-15
BR9403974A (en) 1995-06-13
HU9402805D0 (en) 1995-01-30
NO943683L (en) 1995-04-06
NO943683D0 (en) 1994-10-03
BG99095A (en) 1995-06-30
HU217259B (en) 1999-12-28
AU7436194A (en) 1995-04-27
PL305297A1 (en) 1995-04-18
RU2114750C1 (en) 1998-07-10
EP0646512A1 (en) 1995-04-05
RU94035676A (en) 1996-08-27

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