AU742235B2 - A bogie brake - Google Patents

A bogie brake Download PDF

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Publication number
AU742235B2
AU742235B2 AU50772/99A AU5077299A AU742235B2 AU 742235 B2 AU742235 B2 AU 742235B2 AU 50772/99 A AU50772/99 A AU 50772/99A AU 5077299 A AU5077299 A AU 5077299A AU 742235 B2 AU742235 B2 AU 742235B2
Authority
AU
Australia
Prior art keywords
brake
bogie
beams
brake according
block holder
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
AU50772/99A
Other versions
AU5077299A (en
Inventor
Fred Emilsson
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.)
Sab Wabco AB
Original Assignee
Sab Wabco AB
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
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Application filed by Sab Wabco AB filed Critical Sab Wabco AB
Publication of AU5077299A publication Critical patent/AU5077299A/en
Application granted granted Critical
Publication of AU742235B2 publication Critical patent/AU742235B2/en
Anticipated expiration legal-status Critical
Ceased 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
    • B61H15/00—Wear-compensating mechanisms, e.g. slack adjusters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
    • B61H1/00—Applications or arrangements of brakes with a braking member or members co-operating with the periphery of the wheel rim, a drum, or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
    • B61H13/00—Actuating rail vehicle brakes
    • B61H13/20—Transmitting mechanisms
    • B61H13/24—Transmitting mechanisms for cars with two axles or bogies with two axles and braking cylinder(s) for each bogie, the mechanisms at each side being interconnected

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

A rail vehicle bogie comprises a tranverse bolster (1), two side frames (2) and two wheel sets (3) with wheels (4). A bogie brake comprises between the two wheel sets two tranverse brake beams (5) arranged to be pressed apart by brake actuators (11) for braking engagement by brake blocks (6) at the ends of the brake beams with the treads of the wheels. According to the invention the brake actuators (11) are arranged in the brake beams (5) close to the wheels (4) and are integrated in the beams, which otherwise are built-up of plate profiles (15).

Description

WO 00/02756 PCT/SE99/01252 1 A BOGIE BRAKE Technical Field The present invention relates to a bogie brake for arrangement in a rail vehicle bogie, which comprises a transverse bolster, two side frames connected to the bolster via springs, and two wheel sets, each having two wheels and being journalled for rotation in the side frames, the bogie brake comprising between the two wheel sets two transverse brake beams arranged to be pressed apart by fluid actuated means for braking engagement by brake blocks at the ends of the brake beams with the treads of the wheels.
Background of the Invention Bogie brakes of the kind defined above are well known in the art and have been in commercial use for many years, especially for goods waggons in USA. Typical examples of prior bogie brakes are shown in US-A-3 088 550, 3 731 766, 4 434 877, and 5 069 312. The brake beams for these bogie brakes have traditionally been heavy and clumsy contructions with a high degree of inherent stiffness and a capability of transferring high bending moments from the brake actuators, most often centrally located in the brake beams, to the brake blocks at their ends. The brake actuators have been mounted external to or between the beams, adding to the overall weight.
The main object of the invention is to attain a bogie brake with a markedly reduced weight and space requirement in relation to conventional designs without sacrificing the ability to transmit the requisite brake forces to the wheel treads via the brake blocks.
Q:\OPER\GC P 772c.doc- Iu -2- The Invention According to the present invention there is provided a bogie brake for arrangement in a rail vehicle bogie, which comprises a transverse bolster, two side frames connected to the bolster via springs and two wheel sets, each having two wheels and being journalled for rotation in the side frames, the bogie brake comprising between the two wheel sets two transverse brake beams arranged to be pressed apart by fluid actuated means for braking engagement by brake blocks at the ends of the brake beams with the treads of the wheels, characterised in that brake actuators are arranged in the brake beams close to the wheels and are integrated in :the beams, which otherwise are built-up of plate profiles.
15 Hereby, the force from each brake actuator is only to be transferred the small distance to the brake block, so that the bending moment in the beams is kept at a minimum and accordingly also the dimensional requirement on the 000 beams. It is also of great advantage that the brake o 20 actuators (and push rod attachments) are incorporated in the 0 brake beams.
S•The brake actuators used in the bogie brake according to the invention are preferably commercially available brake units including slack adjusters or brake regulators, so that the necessary slack adjusting function is taken care of by the brake actuators. The used brake unit has a parallelepipedical shape, which makes it extremely suitable for incorporation in the brake beams of the kind described.
Conventional brake beams are supported at their ends by guides in the side frames, which means that the bogie brake, i.e. the brake beams with their brake actuators and associated parts, is unsprung. According to the invention a
C)
"4.
Q \OPER\GCP\50772c.doc-l l)/Il) -2Abrake block holder at each end of each brake beam is provided with a suspension link for pivotal suspension of the beam from the bolster, which means that the bogie brake is sprung with the advantages associated therewith.
Each suspension link is preferably provided with a friction device known per se for keeping the brake beams in a proper position. The friction devices are also able to *o WO 00/02756 PCT/SE99/01252 3 act as resilient and damping means for the transverse or lateral movements of the brake beams.
The brake block holders are integrated parts of the brake beams.
Brief Description of the Drawings The invention will be further described below under reference to the accompanying drawings, in which the different figures are drawn to different, suitable scales and in which Fig 1 is a plan view of a rail vehicle bogie provided with a bogie brake according to the invention, Fig 2 is a front view of the bogie brake according to Fig 1, Fig 3 is a schematical side view of the bogie of Fig 1 with the bogie brake, Fig 4 corresponds to Fig 3 but with certain bogie parts omitted for the sake of clarity, Fig 5 is a front view corresponding to Fig 2 of a bogie brake provided with a parking brake arrangement, Fig 6 is a plan view of the arrangement of Fig Fig 7 is a plan view of a bogie brake provided with a slightly different parking brake arrangement, Figs 8-10 are plan views of bogie brakes with three different types of brake units incorporated therein, Figs 11 and 12 are a front view and a plan view, respectively, of a slightly modified bogie brake according to the invention, Figs 13-15 are a front view, a side view and a plan view, respectively, of a brake beam for incorporation in the bogie brake of Figs 11 and 12, and Fig 16 is a side view to a larger scale of an embodiment differing from the other embodiments mainly in the shape of the brake beam profiles.
WO 00/02756 PCT/SE99/01252 4 Description of Practical Embodiments The different Figures are different views of the same constructions with possible modifications. For the sake of clarity reference numerals are used relatively sparingly and generally speaking mainly in Figures where the referenced part first appears.
A rail vehicle bogie shown in Fig 1 comprises a bolster 1 for rotatable connection to a body (not shown) of the rail vehicle, two side frames 2 connected to the bolster 1 via springs (not shown), and two wheel sets 3 journalled for rotation in the side frames 2. Each wheel set 3 is provided with two wheels 4.
A so called bogie brake for such a bogie has as is well known in the art two transverse brake beams suspended between the two wheel sets 3 and arranged to be pressed apart for braking engagement by brake blocks 6 provided at the ends of the brake beams with the treads of the wheels 4.
Each brake block 6, which is worn-out after a number of brake applications and has to be replaced, is releasably attached to a brake block holder 7 with a design to be described below. Each such brake block holder 7 is provided with a suspension link 8, which is pivotally suspended from a suspension bracket 9 on the bolster i, so that the brake beams S are suspended from a sprung part. The brake block holders 7 and thus the brake beams 5 are held in a proper suspended position in relation to the suspension links 8 by means of conventional friction devices 10. These friction devices 10 also act as resilient and damping means for the transverse or lateral movements of the brake beam The brake beams 5 are provided with two conventional brake units 11. A push rod 12 of each brake unit 11 is connected to the opposite brake beam 5, so that the two brake beams thus are pressed apart at the application by compressed air of the brake units. The push rods 12 extend WO 00/02756 PCT/SE99/01252 through or under the bolster 1. The brake units 11 may have a diagonal arrangement, as is for example shown in Fig 1, or may both be arranged in the same brake beam 5, as is shown in Fig 6.
The brake unit 11 used in the present instance is a conventional unit, which is widely used especially for normal block braking. It has a parallelepipedical shape and is well suited to be arranged in a brake beam 5, which has a design to be described below. Besides a cylinder/pistonarrangement it contains a slack adjuster or brake regulator, as is well known in the art.
As appears from Figs 8-10, the brake unit 11 may be a standard unit, Fig 8, a unit with a mechanical parking brake lever 13, Fig 9, or a unit with a spring parking brake 14, Fig As for example appears from Fig 4, each brake beam is mainly composed of two generally U-shaped plate profiles or brake beam halves 15, and the brake unit 11 bolted thereto constitutes an integral part thereof. The brake beam construction is also shown quite clearly in Figs 13which like Figs 11 and 12 show a variant where the brake block holders 7 are integrated parts of the brake beams. Two halves 15 with a brake unit 11 and a push rod attachment 16 (Fig 1) together form a brake beam In that brake beam 5 the brake unit 11 is arranged as close to the brake block holder 7 as possible, which means that the bending moment transmitted to the beam 5 at a brake application is as low as possible, so that the material thickness and thus the weight of the beam can be kept at a minimum.
The normal construction of the brake beams 5 is that illustrated in for example Figs 1, 2 and 6, where the brake beam end including the brake block holder 7 is a prefabricated end unit 17 (Fig which preferably is WO 00/02756 PCT/SE99/01252 6 attached to the brake beam halves 15 by the same bolts as the brake unit 11 and the push rod attachment 16.
Two mechanical parking brake arrangements are illustrated in Figs 5, 6 and Fig 7, respectively. In both cases the respective brake unit 11 is provided with a parking brake lever 13.
In the first arrangement according to Figs 5 and 6 the two brake units 11 are mounted in the same brake beam A wire 18 is attached to each parking brake lever 13 and may extend over a pulley 19 to for example a parking brake wheel (not shown) at the end of the vehicle. As hereby the reaction forces at a parking brake application are taken up by the brake beam suspensions, the parking brake is not affected by the movement of the beam, for example due to brake block wear.
In the second arrangement according to Fig 7 the two brake units 11 are mounted diagonally, one in each brake beam 5. Wires 18 extend from the brake levers 13, in one case over a pulley 19, and leave the bogie in parallel.
They can be connected to a parking brake wheel at the end of the vehicle.
Fig 16 shows a presently preferred embodiment. The wheel 4, the brake block 6, the brake block holder 7, the suspension link 8, the suspension bracket 9, and the brake unit 11 can be recognized from other Figures, although the specific design of the different parts may be dissimilar from that of other embodiments. However, the most important difference relating to the invention is the shape of the brake beam plate profiles, which here has the reference numeral 20. These profiles 20 are in this embodiment namely Z-shaped (instead of U-shaped in the other embodiments).
Q:\OPER\GCP\50772c.doc- 10/10/lI -6A- The reference to any prior art in this specification is not, and should not be taken as, an acknowledgment or any form of suggestion that that prior art forms part of the common general knowledge in Australia.
Throughout this specification and the claims which follow, unless the context requires otherwise, the word "comprise", and variations such as "comprises" and "comprising", will be understood to imply the inclusion of a stated integer or step or group of integers or steps but not the exclusion of any other integer or step or group of integers or steps.
The reference numerals in the following claims do not in any way limit the scope of the respective claims.

Claims (10)

  1. 2. A bogie brake according to claim i, c h a r a c- t e r i z e d in that the plate profiles (15) are U- shaped.
  2. 3. A bogie brake according to claim 1, c h a r a c- t e r i z e d in that the plate profiles (20) are Z- shaped.
  3. 4. A bogie brake according to claim 1, c h a r a c- t e r i z e d in that attachments (16) for push rods (12) from the brake actuators (11) in the respective opposite brake beam are incorporated as construction parts of the beams. A bogie brake according to claim 1, c h a r a c- t e r i z e d in that each brake actuator (11) is a parallelepipedical brake unit including a slack adjuster or brake regulator.
  4. 6. A bogie brake according to claim i, c h a r a c- t e r i z e d in that a brake block holder at each end of each brake beam is provided with a suspension link for pivotal suspension of the beam from the bolster Q.'OPER\GCPU\5772c doc-1ll0 /0II -8-
  5. 7. A bogie brake according to claim 6, characterised in that the suspension link is provided with a friction device (10) known per se for keeping the brake beam in a proper position.
  6. 8. A bogie brake according to claim 1, characterised in that each brake actuator (11) is provided with a parking brake lever (13) for connection via a wire (18) to a parking brake wheel or the like on the vehicle.
  7. 9. A bogie brake according to claim 1, characterised in that the brake block holders for holding the brake blo.cks are integrated parts of the brake beams
  8. 10. A bogie brake according to claim 9, characterised in that each brake block holder is built as a unit o bolted to the brake beam plates 15 11. A bogie brake according to claim 10, characterised in that the brake block holder is attached to the brake beam plates (15) by the same holes as the brake actuators (11)
  9. 12. A bogie brake according to claim 9, characterised 20 in that each brake block holder consists of two halves, each integral with a brake beam plate
  10. 13. A bogie brake for arrangement in a rail vehicle bogie substantially as hereinbefore described with reference to the accompanying drawings. DATED this 10th day of October, 2001 SAB WABCO AB T By its Patent Attorneys DAVIES COLLISON CAVE
AU50772/99A 1998-07-13 1999-07-12 A bogie brake Ceased AU742235B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9802514 1998-07-13
SE9802514A SE513955C2 (en) 1998-07-13 1998-07-13 railway truck
PCT/SE1999/001252 WO2000002756A1 (en) 1998-07-13 1999-07-12 A bogie brake

Publications (2)

Publication Number Publication Date
AU5077299A AU5077299A (en) 2000-02-01
AU742235B2 true AU742235B2 (en) 2001-12-20

Family

ID=20412065

Family Applications (1)

Application Number Title Priority Date Filing Date
AU50772/99A Ceased AU742235B2 (en) 1998-07-13 1999-07-12 A bogie brake

Country Status (16)

Country Link
EP (1) EP1097075B1 (en)
JP (1) JP2002520212A (en)
CN (1) CN1115273C (en)
AT (1) ATE224317T1 (en)
AU (1) AU742235B2 (en)
CA (1) CA2337200A1 (en)
CZ (1) CZ291182B6 (en)
DE (1) DE69903041T2 (en)
ES (1) ES2184483T3 (en)
HU (1) HU223294B1 (en)
PL (1) PL194624B1 (en)
RO (1) RO119357B1 (en)
SE (1) SE513955C2 (en)
SK (1) SK286800B6 (en)
TR (1) TR200100253T2 (en)
WO (1) WO2000002756A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE522471C2 (en) * 2001-03-20 2004-02-10 Sab Wabco Ab bogie Brake
DE10304717B4 (en) * 2003-02-06 2005-07-07 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Block brake device for wheel sets of a bogie of a rail vehicle
DE10304715B4 (en) * 2003-02-06 2005-04-28 Knorr Bremse Systeme Braking device of a rail vehicle
DE10304716B4 (en) 2003-02-06 2006-12-21 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Block braking device of a bogie of a rail vehicle
SE524680C2 (en) 2003-02-19 2004-09-14 Sab Wabco Ab bogie
SE0301051L (en) * 2003-04-08 2004-10-19 Sab Wabco Ab Bogie brake boom for a rail vehicle
SE533474C2 (en) 2009-02-10 2010-10-05 Faiveley Transport Nordic Ab Arrangement in a brake unit for a rail vehicle
EP2797801B9 (en) 2011-12-27 2017-11-15 Wabtec MZT Integrated bogie brake and slack adjuster for the use with said integrated bogie brake
SE536742C2 (en) 2012-02-29 2014-07-08 Faiveley Transport Nordic Ab Parking brake arrangement for a tow brake at a rail vehicle
CZ306673B6 (en) * 2012-12-05 2017-05-03 Dako-Cz A.S. A jaw-type brake of rail vehicles
KR101654896B1 (en) * 2014-12-22 2016-09-08 한국철도기술연구원 Space saving bogie for railway car

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4211311A (en) * 1978-10-25 1980-07-08 The Budd Company Railway car truck and brake support structure
US4357999A (en) * 1978-07-21 1982-11-09 Dresser Industries, Inc. Radial truck centering brake assembly
US4434877A (en) * 1981-02-20 1984-03-06 Hadady Corp. Truck-mounted brake system for railway cars

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5000097A (en) * 1974-01-31 1991-03-19 Railway Engineering Associates, Inc. Self-steering railway truck
US5069312A (en) * 1990-10-15 1991-12-03 Westinghouse Air Brake Company Handbrake for single-cylinder truck-mounted railway car brake

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4357999A (en) * 1978-07-21 1982-11-09 Dresser Industries, Inc. Radial truck centering brake assembly
US4211311A (en) * 1978-10-25 1980-07-08 The Budd Company Railway car truck and brake support structure
US4434877A (en) * 1981-02-20 1984-03-06 Hadady Corp. Truck-mounted brake system for railway cars

Also Published As

Publication number Publication date
CZ291182B6 (en) 2003-01-15
SE9802514L (en) 2000-01-14
SE513955C2 (en) 2000-12-04
HUP0103098A3 (en) 2002-06-28
SK582001A3 (en) 2001-10-08
CZ2001145A3 (en) 2001-05-16
ES2184483T3 (en) 2003-04-01
CA2337200A1 (en) 2000-01-20
DE69903041T2 (en) 2003-04-30
EP1097075B1 (en) 2002-09-18
AU5077299A (en) 2000-02-01
CN1115273C (en) 2003-07-23
SE9802514D0 (en) 1998-07-13
HU223294B1 (en) 2004-05-28
TR200100253T2 (en) 2001-06-21
EP1097075A1 (en) 2001-05-09
PL345415A1 (en) 2001-12-17
WO2000002756A1 (en) 2000-01-20
ATE224317T1 (en) 2002-10-15
SK286800B6 (en) 2009-05-07
JP2002520212A (en) 2002-07-09
HUP0103098A2 (en) 2001-12-28
RO119357B1 (en) 2004-08-30
DE69903041D1 (en) 2002-10-24
PL194624B1 (en) 2007-06-29
CN1309612A (en) 2001-08-22

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Legal Events

Date Code Title Description
MK6 Application lapsed section 142(2)(f)/reg. 8.3(3) - pct applic. not entering national phase
TH Corrigenda

Free format text: IN VOL 14, NO 17, PAGE(S) 3249-3254 UNDER THE HEADING APPLICATIONS LAPSED, REFUSED OR WITHDRAWN PLEASE DELETE ALL REFERENCE TO APPLICATION NO. 49507/99, 50336/99, 50403/99, 50415/99, 50421/99, 50430/99, 50431/99, 50432/99, 50433/99, 50436/99, 50439/99, 50772/99, 52833/99, 53890/99, 53893/99, 53896/99, 54568/99, 55400/99, 55404/99, 56579/99, 56580/99 AND 57650/99

FGA Letters patent sealed or granted (standard patent)