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EP3789262A1 - Guidage d'essieux pour un véhicule ferroviaire, en particulier pour un wagon de marchandises - Google Patents

Guidage d'essieux pour un véhicule ferroviaire, en particulier pour un wagon de marchandises Download PDF

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Publication number
EP3789262A1
EP3789262A1 EP20466003.9A EP20466003A EP3789262A1 EP 3789262 A1 EP3789262 A1 EP 3789262A1 EP 20466003 A EP20466003 A EP 20466003A EP 3789262 A1 EP3789262 A1 EP 3789262A1
Authority
EP
European Patent Office
Prior art keywords
wheelset
swing arm
bogie
guiding
vehicle
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.)
Pending
Application number
EP20466003.9A
Other languages
German (de)
English (en)
Inventor
Jan Capek
Petr Bauer
Tomás Fridrichovský
Tomás Heptner
Pavel Krulich
Zdenek Malkovský
Zdenek Mourecek
Jan Musil
Tomás Získal
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.)
Vukv AS
Original Assignee
Vukv AS
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 Vukv AS filed Critical Vukv AS
Publication of EP3789262A1 publication Critical patent/EP3789262A1/fr
Pending 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
    • B61F5/305—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes incorporating rubber springs
    • 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
    • B61F5/32—Guides, e.g. plates, for axle-boxes

Definitions

  • the presented invention relates to railway vehicles, in particular freight cars, specifically wheelset guiding system.
  • Wheelset guiding represents a link between the wheelset and bogie frame.
  • the stiffness of this link shall ensure a stable vehicle ride in the rail without undesirable wheelset yaw oscillation, in other words a stable vehicle ride is ensured.
  • Stable run of the vehicle is ensured by high stiffness of the wheelset guidance and also by friction dumping of wheelsets movements that occurs in its guidance, which reduces undesirable yaw oscillations of the wheelset.
  • the wheel flange starts to attack the rail head side, and as a consequence the bogie starts to turn under vehicle car body. Wheel flange attack leads to the wear of both wheel and rail, significantly higher when compared to the ride in the straight track.
  • the wheelset guiding allows so called wheelset steering, i.e. the wheelset axis is in curve close to the theoretical radial position, which reduce the wear when passing curve.
  • Simplified - as a theoretical radial position is considered the situation when the wheelset axis goes through the curve radius centre point.
  • the radial position is achieved by a longitudinal movement of the wheelset bearing, other words the wheelset rotates around it's vertical axis - it is so called radial steering.
  • the single wheelsets. in the bogie rotate each to other, one in a clockwise direction and the second one in opposite direction.
  • a low longitudinal stiffness of the wheelset guiding supports the wheelset steering.
  • the most spread freight car bogie in the central Europe is the bogie known under the designation Y25.
  • Wheelset guiding system of this bogie is described e.g. in the document FR1340882A .
  • the wheelset guiding system is based on the fix wheelset guidance brackets.
  • the axle box is arranged between these brackets.
  • the wheelset stabilization is ensured by a piston force, which permanently push the axle box on to the one bracket.
  • the piston force - the stabilization force - is produced by a obliquely orientated "Lenoir link" - with a help of a vector gravity force resolution on this link.
  • the link force is derived from the bogie suspension - from one spring load.
  • the force value is adjustable by a link angle and the number of springs acting on to the link.
  • Count of the springs that support the vehicle gravity is based on vehicle load and mutually increase.
  • count of the springs acting on the Lenoir link remains the same with increasing load. Due to this effect, increase of the piston force is not equal to increasing load, but increases slower than the ratio between empty vehicle and loaded vehicle.
  • the piston force is set for the state - empty vehicle with the help of link angle.
  • Another example of the wheelset guiding is the solution according to the document US3211112 (A ) - 1965-10-12.
  • a full loaded rubber spring is arranged between bearing adapter and bogie frame - between guiding brackets - in an oblique position.
  • the resistance against the longitudinal movement is given only by a stiffness of this rubber spring. So the longitudinal movement is without any friction resistance in comparison to the document FR1340882A .
  • the position between guiding brackets is defined by gravity force resolution on this obliquely arranged rubber element.
  • the stabilization force is given by a position angle of the rubber spring and value of the gravity force which acts form the side frame on the spring.
  • the position of the rubber spring is constant only, i.e. the angle - force resolution - can not depend on the vehicle loading state.
  • the angle shall be optimized for the state of empty vehicle in order to create the stabilization force ensuring a stable vehicle ride.
  • the stabilization force is given by the constant spring angle only, i.e. that the value of the stabilization force rise with the loading strongly equal, more progressively in comparison to the solution acc. to the document FR1340882A .
  • the reason is that it is impossible in this solution to change the number of the springs supporting the vehicle gravity force and producing the stabilization force. So the stabilization force at this solution is too high for the loaded vehicle, too much higher that would be optimal for the wheelset steering. Such high stabilization force does not allow the wheelset steering for the loaded vehicle and this leads to a higher wear between the wheel and rail.
  • the goal for the presented invention is remove above mentioned disadvantageous and create a guiding wheelset system for railway vehicle, especially for freight car, which is characterized by a minimal hysteresis at wheelset steering and allows to set an optimal stabilization force values not only by the vehicle gravity force, but simultaneously using by another parameter.
  • This parameter is the position angle of the flexible part arranged on the bearing adapter or on axle box and it's variation.
  • the design of the this invention is partly based on some existing solutions, wherein the presented wheelset guiding assembly has new arrangement, and is equipped with new components thus completely new wheelset arrangement with new properties is achieved.
  • the principal of the new a guiding wheelset system for railway vehicle, especially for freight car comprising a swing arm, which is jointed to the bogie frame by a flexible joint and comprising bracket as a part of the swing arm which is mounted on the obliquely arranged flexible part, which is arranged on the bearing adapter or axle box.
  • the consequence of this design is that not only the swing arms, but also the flexible elements are rotating at the state of loaded vehicle. This effect influences with advantage the force by which is the bearing adapter pushed on to the swing arm guiding bracket, i.e. the stabilization force. In this way the stabilization force is adjusted not only by the vehicle gravity force value, but also by the force resolution on the obliquely arranged flexible part, which angle position with advantage depends also on the loading.
  • the base of this solution is the wheelset guiding by the swing arm e.g. according to the document CZ PV2018-298 .
  • the swing arm is jointed to the bogie frame by a flexible joint and comprising bracket as a part of the swing arm for the connection with the flexible part. Internal and external guiding brackets are also arranged on the swing arm.
  • the bearing adapter or axle box is arranged n the wheelset bearing.
  • An interface for the flexible part is arranged on the upper part of the bearing adapter.
  • a surface for the contact with the swing arm internal guiding bracket is arranged on the bearing adapter side.
  • the value of the stabilization force acting between the bearing adapter and the internal guiding bracket is given by the vehicle gravity force and the flexible part position angle related to the top of rail lateral surface.
  • the position angle is adjusted for the empty vehicle to set exactly the stabilization force ensuring the stable vehicle ride.
  • the vehicle gravity force is increasing simultaneously with vehicle loading.
  • the longitudinal stabilization force given by the force resolution on the flexible part is simultaneously increased with the vehicle load (vehicle gravity force). But - simultaneously with the rising vehicle gravity force is rotating the swing arm.
  • Flexible part position angle related to the top of rail surface is with advantage by the rotation of the swing arm. This effect with advantage reduces the increasing tempo of the by resolution given stabilization force - i.e. the stabilization force rise slower as the ratio between the loaded and empty vehicle.
  • the rotation angle value of the swing arm due to the loading is set by the bogie spring characteristics.
  • the longitudinal movement of the bearing adapter or bearing box is allowed by the flexibility of the rubber flexible part arranged between the adapter and swing arm - so the hysteresis is minimized at this movement - there is no friction resistance.
  • This solution ensures stable ride of the empty vehicle and simultaneously maximally supports the effect of the wheelset steering - i.e. minimizing of the wear between the wheel and rail in the curve. Due to the minimal hysteresis is disclosed a risk, that the wheelset does not come in to the parallel position after leaving curve.
  • the flexible part can be designed as a unique or splitted part - i.e.
  • the flexible part can be shaped in a "V" or "U” shape or totally generally shaped. By this shaping is possible with advantage to set the lateral wheelset guidance parameters.
  • the bogie spring can be orientated in the bogie in a lateral or vertical or in oblique position
  • the swing arm and bearing adapter are equipped with brackets and stop for limiting of the lateral displacement between the wheelset and swing arm. This brackets and stop is with advantage possible to place close to the swing arm joint, which wit advantage reduce the lateral torque acting on the swing arm.
  • the guiding system is also equipped by the wheelset retainer and bearing adapter retainer, which are used at bogie or vehicle lifting on the lifting jacks or by the crane.
  • fig. 1 is show the principle of the force resolution on the obliquely arranged flexible element - 1a) at the empty vehicle, 1b) - at the loaded vehicle
  • fig. 2 is an example of the flexible part shaping and arrangement in to the "V" shape and splitting in to the two parts
  • on the fig.3 is the diagram of the stabilization force characteristics depending on the vehicle load
  • on the fig. 4 is the side view on the wheel guiding assembly arrange at one wheel of railway vehicle
  • fig. 5 is the guidance assembly in an axonometric view
  • on the fig. 6 is a section view on the bearing adapter or axle box an internal guiding brackets arranged on the swing arm.
  • fig. 1 , fig. 2 , fig 3 , fig 4 , fig 5 and fig 6 is shown an arrangement of the wheelset guiding system for the railway vehicle especially for the freight car, system comprising swing arms 6, which are in rotation flexible jointed with the bogie frame 1 by the joints 9, this swing arms loads by the brackets 6d flexible part 5. Swing arm 6 rotation, together with the brackets 6d, both depends on the vehicle loading and bogie spring 10 characteristic.
  • bearings 3 On the wheelset 2 with wheels 2a are arranged bearings 3, on the bearings 3 is arranged bearing adapters or axle box 4.
  • On the bearing adapter 4 is created an interface 4b, on this interface 4b is arranged the flexible part 5.
  • the gravity force resolution Based on the oblique spring part 5 position the gravity force resolution produce longitudinal force which push the bearing adapter 4 and its 4c on to the swing arm 6 bracket 6a. Due to the vehicle loading increases the vehicle gravity force, as a consequence rotate swing arms 6 with brackets 6d around the joint 9 and the position angle of the flexible part 5 changes in relation to the top of rail surface, which with advantage reduce the tempo of the increment of the force which push the adapter 4 and its surface 4c on to the guiding bracket 6a - i.e. the stabilization force.
  • the swing arm 6 are equipped by a stop 6c and the adapter 4 is equipped by brackets 4a for limiting of the lateral wheelset movement between the wheelset and swing arm.
  • the wheelset movement in direction from the bogie centre is blocked by the swing arm bracket 6b.
  • the wheelset guiding assembly is equipped by a wheelset 2 retainer 7 and adapter 4 retainer 8, which ensure the assembly at bogie or vehicle lifting on jacks or on crane.
  • the fig. 1a On the fig. 1a is also shown the principle of the gravity force resolution the obliquelly arranged flexible part 5 at the empty vehicle, where the swing arm 6 position angle is marked (plus) and on the fig. 1b is shown the gravity force resolution on the flexible part at the loaded vehicle, where the swing arm 6 position angle is marked as (minus). From the pictures it is obvious that the stabilization force is regulated not only by the vehicle load, but also by the flexible part 5 position angle which depends on the vehicle load. On the fig.
  • the wheelset guidance is applicable at all railway vehicles bogies, especially at the freight car bogies.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Platform Screen Doors And Railroad Systems (AREA)
  • Springs (AREA)
  • Vehicle Body Suspensions (AREA)
EP20466003.9A 2019-09-09 2020-09-08 Guidage d'essieux pour un véhicule ferroviaire, en particulier pour un wagon de marchandises Pending EP3789262A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CZ2019-571A CZ309895B6 (cs) 2019-09-09 2019-09-09 Zařízení pro vedení dvojkolí v podvozku kolejového vozidla

Publications (1)

Publication Number Publication Date
EP3789262A1 true EP3789262A1 (fr) 2021-03-10

Family

ID=72474272

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20466003.9A Pending EP3789262A1 (fr) 2019-09-09 2020-09-08 Guidage d'essieux pour un véhicule ferroviaire, en particulier pour un wagon de marchandises

Country Status (2)

Country Link
EP (1) EP3789262A1 (fr)
CZ (1) CZ309895B6 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1340882A (fr) 1962-08-31 1963-10-25 Sambre & Meuse Usines Bogie pour véhicules de chemins de fer
US3211112A (en) 1961-11-09 1965-10-12 Amsted Ind Inc Lateral snubbing device
US5509358A (en) * 1994-12-08 1996-04-23 Amsted Industries Incorporated Railcar truck bearing adapter construction
US5562045A (en) * 1995-04-05 1996-10-08 Pennsy Corporation Bearing adapter and adapter pad for railway trucks
EP1484228A1 (fr) 2003-05-20 2004-12-08 Powell Duffryn Rail Limited Dispositifs ammortisseurs pour bogies Y25
EP3299247A1 (fr) * 2016-09-27 2018-03-28 VÚKV a.s. Bogie pour véhicule ferroviaire
US20180257681A1 (en) * 2017-03-09 2018-09-13 Amsted Rail Company, Inc. Passive steering for a three piece railway truck

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2207848A (en) * 1934-07-18 1940-07-16 Symington Gould Corp Railway truck

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3211112A (en) 1961-11-09 1965-10-12 Amsted Ind Inc Lateral snubbing device
FR1340882A (fr) 1962-08-31 1963-10-25 Sambre & Meuse Usines Bogie pour véhicules de chemins de fer
US5509358A (en) * 1994-12-08 1996-04-23 Amsted Industries Incorporated Railcar truck bearing adapter construction
US5562045A (en) * 1995-04-05 1996-10-08 Pennsy Corporation Bearing adapter and adapter pad for railway trucks
EP1484228A1 (fr) 2003-05-20 2004-12-08 Powell Duffryn Rail Limited Dispositifs ammortisseurs pour bogies Y25
EP3299247A1 (fr) * 2016-09-27 2018-03-28 VÚKV a.s. Bogie pour véhicule ferroviaire
US20180257681A1 (en) * 2017-03-09 2018-09-13 Amsted Rail Company, Inc. Passive steering for a three piece railway truck

Also Published As

Publication number Publication date
CZ2019571A3 (cs) 2021-05-05
CZ309895B6 (cs) 2024-01-17

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