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EP2065285A1 - Amélioration de la convivialité avec le rail du bogie Y25 - Google Patents

Amélioration de la convivialité avec le rail du bogie Y25 Download PDF

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Publication number
EP2065285A1
EP2065285A1 EP09154518A EP09154518A EP2065285A1 EP 2065285 A1 EP2065285 A1 EP 2065285A1 EP 09154518 A EP09154518 A EP 09154518A EP 09154518 A EP09154518 A EP 09154518A EP 2065285 A1 EP2065285 A1 EP 2065285A1
Authority
EP
European Patent Office
Prior art keywords
piston
pedestal
bogie
bogie according
arrangement
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Withdrawn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
EP09154518A
Other languages
German (de)
English (en)
Inventor
Paul Hewitt
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.)
English Welsh & Scottish Railway Holdings Ltd
Original Assignee
English Welsh & Scottish Railway Holdings Ltd
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 English Welsh & Scottish Railway Holdings Ltd filed Critical English Welsh & Scottish Railway Holdings Ltd
Publication of EP2065285A1 publication Critical patent/EP2065285A1/fr
Withdrawn legal-status Critical Current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
    • B61F5/26—Mounting or securing axle-boxes in vehicle or bogie underframes
    • B61F5/30—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes
    • 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
    • B61F5/26—Mounting or securing axle-boxes in vehicle or bogie underframes
    • B61F5/30—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes
    • B61F5/308—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes incorporating damping devices

Definitions

  • This invention relates to the Y25 bogie and variants thereto, and in particular to improvements to this type of bogie to improve the track friendliness thereof.
  • a typical Y25 bogie comprises a pair of pedestals, each being supported by a pair of axle boxes through respective pairs of spring sets.
  • Friction damping arrangements are provided to damp, primarily, vertical and lateral movement between the axle boxes and pedestals.
  • Each damping arrangement typically comprises a piston slidably mounted upon one of the pedestals and having an end face which can be brought into contact with a surface of an associated one of the axle boxes, the piston being moveable by a drive member in the form of a spring holder located between one of the spring sets and the pedestal.
  • a link arrangement known as a Lenoir link is connected between the pedestal and the drive member.
  • the Lenoir link is inclined to the vertical such that the weight of the pedestal and the wagon and load carried thereby applies a lateral force to the drive member and piston.
  • the magnitude of the force applied to the piston is thus dependent upon the load.
  • the frictional load between the axle box and the pedestal also varies, thus the degree of damping between these components is load dependent.
  • the mounting of the piston is such that there is contact between the piston and the pedestal and, in use, between the end face of the piston and the axle box.
  • the piston, pedestal and axle box are of metallic, typically steel, construction, such contact is thought to be undesirable due to stiction and the metal-metal interfaces.
  • a bogie comprising a pedestal supported through spring sets by an axle box, and a damping arrangement for damping relative vertical and lateral movement between the axle box and the pedestal, the damping arrangement comprising a piston guided for movement relative to the pedestal and having a surface cooperable with a surface of the axle box, a drive arrangement being provided to move the piston, a resilient mounting arrangement being provided between the piston and the pedestal so as to allow the piston to move relative to the pedestal, the resilient mounting arrangement undergoing resilient deformation, whilst avoiding sliding contact between the pedestal and the piston.
  • the resilient mounting arrangement conveniently comprises a resilient material sleeve secured both to the piston and to the pedestal.
  • the drive arrangement for the piston conveniently includes an inclined Lenoir link or similar arrangement.
  • the surface of the piston may comprise a composite material.
  • the composite material surface of the piston may comprise a surface of a composite material element secured to the piston.
  • the composite material element may be mechanically secured to the piston, and could be removable therefrom. Alternatively, it may be hot-bonded to the piston.
  • the piston may be constructed from the composite material, a suitable reinforcing structure being provided within the piston to give the piston the required rigidity to operate correctly.
  • Such an arrangement is advantageous in that the metal-to-metal interface and stiction at the interface between the piston and the axle box can be avoided or reduced.
  • a second piston may also be guided for movement relative to the pedestal, the second piston also having a surface cooperable with a surface of the axle box, a second drive arrangement being provided to move the second piston.
  • the second drive arrangement preferably includes a Lenoir link.
  • the said surface of the second piston may comprise a composite material.
  • the second piston may be guided for sliding movement relative to the pedestal, or alternatively, a resilient mounting arrangement may be provided between the second piston and the pedestal so as to allow the second piston to move relative to the pedestal, the resilient mounting arrangement undergoing resilient deformation, whilst avoiding sliding contact between the pedestal and the second piston.
  • the spring set of a typical Y25 type bogie has a rate falling within the range of approximately 980N/mm tare and 2600N/mm laden, and a compressed length falling within the range of approximately 240mm to 200mm. It is thought that the track friendliness of the bogie may be enhanced by modifying the bogie to use a softer, longer spring set. Preferably, therefore, the spring sets of the bogie have a compressed length falling within the range of approximately 300mm to 190mm and a rate falling within the range of 390N/mm tare to 1750N/mm laden.
  • the axle box is conveniently modified compared to a standard axle box so that, in use, the lower end of the spring set is located at a height falling within the range of 220mm to 250mm above the track, with 920mm diameter wheels.
  • the maximum permitted travel of the piston is of the order of 4mm. It is thought that the bogie would benefit from increasing the maximum travel of the piston.
  • the bogie is designed to allow the piston to move through a distance of at least about 7mm, and preferably around 9mm or more.
  • the piston is slidable within a metallic sleeve mounted upon the pedestal, the sleeve having a lip protruding from the pedestal.
  • the dimensions of the pedestal may be modified to allow an increase in the maximum permitted travel of the piston.
  • a bogie comprising a pedestal supported through spring sets by an axle box, and a damping arrangement for damping relative vertical movement between the axle box and the pedestal, the damping arrangement comprising a piston guided for movement relative to the pedestal and having a surface cooperable with a surface of the axle box, a drive arrangement being provided to move the piston, and wherein the said surface of the piston comprises a composite material.
  • Such an arrangement is advantageous in that the metal-to-metal interface and stiction at the interface between the piston and the axle box can be avoided or reduced.
  • the piston may be guided for sliding movement relative to the pedestal.
  • a resilient mounting arrangement may be provided between the piston and the pedestal so as to allow the piston to move relative to the pedestal, the resilient mounting arrangement undergoing resilient deformation, whilst avoiding sliding contact between the pedestal and the piston
  • a bogie comprising a pedestal supported through spring sets by an axle box, and a damping arrangement for damping relative vertical and lateral movement between the axle box and the pedestal, the damping arrangement comprising a piston guided for movement relative to the pedestal and having a surface cooperable with a surface of the axle box, a drive arrangement being provided to move the piston, and a second piston also being guided for movement relative to the pedestal, the second piston also having a surface cooperable with another surface of the axle box, a second drive arrangement being provided to move the second piston.
  • the drive arrangements preferably each include a Lenoir link.
  • a bogie comprising a pedestal supported through spring sets by an axle box, and a damping arrangement for damping relative vertical movement between the axle box and the pedestal, the damping arrangement comprising a piston guided for movement relative to the pedestal and having a surface cooperable with a surface of the axle box, a drive arrangement being provided to move the piston, wherein the spring sets of the bogie have a compressed length falling within the range of approximately 300mm to 190mm and a rate falling within the range of 390N/mm to 1750N/mm.
  • a bogie comprising a pedestal supported through spring sets by an axle box, and a damping arrangement for damping relative vertical movement between the axle box and the pedestal, the damping arrangement comprising a piston guided for movement relative to the pedestal and having a surface cooperable with a surface of the axle box, a drive arrangement being provided to move the piston, wherein the piston has a maximum travel of at least about 7mm.
  • Two or more of the various aspect of the invention may be used in conjunction with one another, if desired.
  • FIG. 1 to 3 there is shown part of a bogie which is, generally of the Y25 type, the bogie comprising a pair of pedestals 10 (only part of one of which is shown) arranged parallel to one another and secured to one another, each pedestal 10 being supported by a pair of axle boxes 12.
  • a pair of spring sets 14, 16 are provided between each axle box 12 and the associated pedestal.
  • Each spring set 14, 16 comprises a first, outer spring 18 and an inner spring 20, the length of the inner spring 20 being chosen such that the inner spring 20 only becomes an effective part of the primary suspension once a predetermined load is carried by the bogie.
  • An axle and wheel set (not shown) extends between each axle box 12 associated with one of the pedestals and a respective axle box 12 associated with the other of the pedestals 10.
  • a drive member 22 in the form of a spring holder is carried by the outer spring 18 of one of the spring sets 12 and is connected to the pedestal 10 through an inclined link member known as a Lenoir link 24, as shown in Figure 2 .
  • the inclination of the Lenoir link 24 is arranged such that a lateral load is applied to the drive member 22, the magnitude of which is dependent upon the load carried by the bogie.
  • the drive member 22 abuts a piston 26 which is guided for sliding movement relative to a part of the pedestal 10.
  • a metallic sleeve 28 is provided in the pedestal 10 within which the piston 26 slides.
  • the end of the piston remote from the drive member is arranged to bear against a surface 12a of the axle box, the engagement between the piston and the axle box being a metal-to-metal engagement which is undesirable.
  • the piston 26 includes a composite material component 29 located such that the surface of the piston 26 which engages the axle box is not metallic but rather is of the composite material.
  • the composite material component 29 comprises a plate 30 mounted upon the piston 26 and having mechanically secured or hot bonded thereto an element 32 of composite material. If desired, the composite material component 29 may be removably attached to the piston, but this need not be the case.
  • the piston could be entirely or largely of a non-metallic material, if desired.
  • the piston could comprise a suitably reinforced composite material component.
  • FIG. 1 In the arrangement of Figure 1 , only one piston 26 is associated with each axle box 12 of the bogie. This need not be the case, and Figures 4 and 5 illustrate a modification in which two pistons 26a, 26b are provided, each of the pistons being driven by an associated drive member 22a, 22b using an associate Lenoir link 24a, 24b (see Figure 5 ).
  • the arrangement of Figures 4 and 5 does not make use of the provision of a composite material surface on the piston, but is still advantageous in that the symmetry of the bogie is improved.
  • the arrangement of Figures 4 and 5 does not make use of the composite material surface, one or both of the pistons 26a, 26b may be provided with a composite material surface, for example using any of the techniques or arrangements described hereinbefore.
  • the track friendliness of the bogie may be enhanced by designing the bogie in such a manner as to allow the travel of the piston or pistons to be increased from the 4mm maximum travel permitted by a typical Y25 bogie to a maximum travel of at least 7mm, and preferably around 9mm.
  • such an increase in the travel of the piston or pistons may be achieved by modifying the sleeve 28 in which the piston 26 is slidable to omit the lip 28a (see Figure 3 ) thereof.
  • a minor alteration of the design of the pedestal 10 may be made to increase the maximum permitted travel of the piston.
  • Figures 6 and 7 illustrate another bogie based closely upon the standard Y25 bogie but modified in order to improve its track friendliness.
  • the bogie of Figures 6 and 7 differs from a typical Y25 type bogie in four main respects. Firstly, as with the arrangement of Figure 1 , the pistons 26 are provided with composite material surfaces, thereby avoiding metal-to-metal contact between the pistons and the axle box. Secondly, as with the arrangement shown in Figures 4 and 5 , two pistons 26 are provided, each being driven by an associated drive arrangement using an associated Lenoir link.
  • a further advantage of this mounting of the pistons 26 is that the pistons 26 are permitted to move through a small distance horizontally (generally perpendicularly to the axis of the piston), vertically, and to tilt slightly, relative to the pedestal 10, thereby providing additional degrees of freedom in the movement of the pistons 26, permitting braking inertial forces to be accommodated and axle box movement relative to the pedestal in the horizontal (fore-aft direction) and vertical direction to be accommodated. As a result, constant load dependent friction damping and axle steering can be achieved.
  • the fourth important distinction between the arrangement of Figures 5 and 6 and the typical Y25 bogie resides in the spring sets 14, 16.
  • the spring sets 14, 16 used in the arrangement of Figures 6 and 7 are significantly longer and softer than the spring sets typically used in a Y25 bogie.
  • the arrangements illustrated in Figures 1 to 5 use the typical spring sets, and the increase in length is apparent by comparing, say, Figure 1 with Figure 6 .
  • a typical spring set used in a Y25 type bogie at tare weight has a length of approximately 240mm and a rate of about 980N/mm.
  • the arrangement of Figures 6 and 7 has a length of about 300mm and a rate of about 390N/mm.
  • axle box 12 In order to accommodate the revised spring sets into the bogie whilst still meeting the usual design criteria of a Y25 bogie, the axle box 12 has been modified as shown in Figure 6 to lower the height of the lower end of each spring set above the ground/rails, in use.
  • the change in the design of the axle box 12 is such as to position the lower end of the spring sets at a height of approximately 220mm from the rails.
  • any combination of the various modifications to the conventional Y25 bogie described herein may be used to provide a bogie of improved track friendliness.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Handcart (AREA)
  • Toys (AREA)
  • Vibration Dampers (AREA)
  • Springs (AREA)
  • Vibration Prevention Devices (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Fluid-Damping Devices (AREA)
  • Bearings For Parts Moving Linearly (AREA)
EP09154518A 2003-05-20 2004-05-13 Amélioration de la convivialité avec le rail du bogie Y25 Withdrawn EP2065285A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0311480.8A GB0311480D0 (en) 2003-05-20 2003-05-20 Improvements in the track friendliness of Y25 bogie
EP04252767A EP1484228B8 (fr) 2003-05-20 2004-05-13 Dispositifs ammortisseurs pour bogies Y25

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP04252767A Division EP1484228B8 (fr) 2003-05-20 2004-05-13 Dispositifs ammortisseurs pour bogies Y25

Publications (1)

Publication Number Publication Date
EP2065285A1 true EP2065285A1 (fr) 2009-06-03

Family

ID=9958356

Family Applications (3)

Application Number Title Priority Date Filing Date
EP09154518A Withdrawn EP2065285A1 (fr) 2003-05-20 2004-05-13 Amélioration de la convivialité avec le rail du bogie Y25
EP07023449A Expired - Lifetime EP1925526B1 (fr) 2003-05-20 2004-05-13 Améliorations du bogie Y25 pour ménager la voie
EP04252767A Expired - Lifetime EP1484228B8 (fr) 2003-05-20 2004-05-13 Dispositifs ammortisseurs pour bogies Y25

Family Applications After (2)

Application Number Title Priority Date Filing Date
EP07023449A Expired - Lifetime EP1925526B1 (fr) 2003-05-20 2004-05-13 Améliorations du bogie Y25 pour ménager la voie
EP04252767A Expired - Lifetime EP1484228B8 (fr) 2003-05-20 2004-05-13 Dispositifs ammortisseurs pour bogies Y25

Country Status (6)

Country Link
EP (3) EP2065285A1 (fr)
AT (2) ATE553975T1 (fr)
DE (1) DE602004020702D1 (fr)
EA (1) EA007260B1 (fr)
GB (6) GB0311480D0 (fr)
PL (2) PL1925526T3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2521667A1 (fr) 2010-01-07 2012-11-14 Aktiebolaget SKF Boîte d'essieu de bogie avec interfaces d'amortissement
CZ309895B6 (cs) 2019-09-09 2024-01-17 VÚKV a.s. Zařízení pro vedení dvojkolí v podvozku kolejového vozidla
PL72915Y1 (pl) * 2020-02-07 2023-02-27 Wagony Swidnica Spolka Z Ograniczona Odpowiedzialnoscia Tłumik tarcia, zwłaszcza w układzie zawieszenia wózka kolejowego
PL73477Y1 (pl) * 2020-02-07 2024-06-17 Wagony Swidnica Spolka Z Ograniczona Odpowiedzialnoscia Tłumik tarcia, zwłaszcza w układzie zawieszenia wózka kolejowego

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU44261A1 (fr) * 1960-02-03 1963-10-14
FR1362645A (fr) * 1963-04-25 1964-06-05 Frangeco Dispositif d'amortissement de suspension pour véhicules
DE2110072A1 (de) * 1971-03-03 1972-09-07 Wegmann & Co., 3500 Kassel Achsführung an einem Drehgestell für Schienenfahrzeuge, insbesondere für Güterwagen
EP0048193A1 (fr) * 1980-09-17 1982-03-24 Societe Nationale Des Chemins De Fer Francais Agencement de suspension pour véhicules ferroviaires

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE790623A (fr) * 1971-12-04 1973-02-15 Linke Hofmann Busch Boggie pour des vehicules ferroviaires
BE795115A (fr) * 1972-02-10 1973-05-29 Talbot Waggonfab Boggie pour vehicule sur rails
FR2271094B1 (fr) * 1973-12-18 1978-04-14 Sumitomo Metal Ind
FR2477090A1 (fr) * 1980-02-29 1981-09-04 Sambre & Meuse Usines Suspension pour chassis a au moins deux essieux de vehicule de chemin de fer et chassis muni de cette suspension
US4765251A (en) * 1984-07-23 1988-08-23 Kaser Associates, Inc. Railway car truck with multiple effective spring rates
FR2648417B1 (fr) * 1989-06-19 1991-09-20 Arbel Fauvet Rail Sa Dispositif de suspension et d'amortissement pour vehicules ferroviaires a essieux orientables
FR2658471B1 (fr) * 1990-02-21 1992-06-12 Sambre & Meuse Usines Bogie a pesee de charge pour vehicules de chemin de fer.
US5806435A (en) * 1996-09-06 1998-09-15 Amsted Industries Incorporated Side bearings for truck bolsters
US20020092440A1 (en) * 2000-09-11 2002-07-18 Paul Hewitt Railcar Truck
US6631685B2 (en) * 2000-09-11 2003-10-14 Meridian Rail Information Systems Corp. Dual friction wear plate assembly for a railcar side frame saddle
FR2815594B1 (fr) * 2000-10-20 2005-08-26 Arbel Fauvet Rail Sa Suspension ferroviaire equipee d'une boite d'essieu a palettes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU44261A1 (fr) * 1960-02-03 1963-10-14
FR1362645A (fr) * 1963-04-25 1964-06-05 Frangeco Dispositif d'amortissement de suspension pour véhicules
DE2110072A1 (de) * 1971-03-03 1972-09-07 Wegmann & Co., 3500 Kassel Achsführung an einem Drehgestell für Schienenfahrzeuge, insbesondere für Güterwagen
EP0048193A1 (fr) * 1980-09-17 1982-03-24 Societe Nationale Des Chemins De Fer Francais Agencement de suspension pour véhicules ferroviaires

Also Published As

Publication number Publication date
GB2422814A (en) 2006-08-09
GB0608205D0 (en) 2006-06-07
GB2422589A (en) 2006-08-02
EA007260B1 (ru) 2006-08-25
EP1484228A1 (fr) 2004-12-08
EA200400559A1 (ru) 2004-12-30
GB0311480D0 (en) 2003-06-25
GB2422588A (en) 2006-08-02
GB2401844A (en) 2004-11-24
EP1484228B8 (fr) 2009-08-05
GB0608204D0 (en) 2006-06-07
GB0608209D0 (en) 2006-06-07
PL1484228T3 (pl) 2009-10-30
GB2422587A (en) 2006-08-02
ATE429367T1 (de) 2009-05-15
GB0608207D0 (en) 2006-06-07
DE602004020702D1 (de) 2009-06-04
GB2401844B (en) 2006-07-26
ATE553975T1 (de) 2012-05-15
EP1484228B1 (fr) 2009-04-22
GB0410857D0 (en) 2004-06-16
GB2422814B (en) 2007-11-21
EP1925526A1 (fr) 2008-05-28
GB2422589B (en) 2006-12-06
EP1925526B1 (fr) 2012-04-18
PL1925526T3 (pl) 2012-10-31

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