WO2023144434A1 - Mécanisme de frein pour véhicules ferroviaires avec des axes de changement de largeur de voie - Google Patents

Mécanisme de frein pour véhicules ferroviaires avec des axes de changement de largeur de voie Download PDF

Info

Publication number
WO2023144434A1
WO2023144434A1 PCT/ES2023/070038 ES2023070038W WO2023144434A1 WO 2023144434 A1 WO2023144434 A1 WO 2023144434A1 ES 2023070038 W ES2023070038 W ES 2023070038W WO 2023144434 A1 WO2023144434 A1 WO 2023144434A1
Authority
WO
WIPO (PCT)
Prior art keywords
rod
knuckle
brake mechanism
shoe holder
reaction
Prior art date
Application number
PCT/ES2023/070038
Other languages
English (en)
Spanish (es)
Inventor
Beltran Rubio De Hita
Original Assignee
Variable Gauge Systems Sl
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 Variable Gauge Systems Sl filed Critical Variable Gauge Systems Sl
Publication of WO2023144434A1 publication Critical patent/WO2023144434A1/fr

Links

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
    • B61H13/00—Actuating rail vehicle brakes
    • B61H13/34—Details
    • 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
    • B61F7/00—Rail vehicles equipped for use on tracks of different width
    • 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
    • B61H9/00—Brakes characterised by or modified for their application to special railway systems or purposes

Definitions

  • the present invention pertains generally to the railway field, and more particularly to braking systems for railway vehicles provided with a track gauge change system.
  • the object of the present invention is a new brake mechanism whose brake pads can be moved to adapt to the position of the wheels of a railway vehicle with track gauge change axles.
  • the brake mechanism of a railway vehicle usually comprises a triangle formed by a main bar arranged horizontally and perpendicular to the direction of travel, from whose ends emerge two auxiliary bars, also horizontal, which are connected to each other at the opposite end to that. connecting them to the crossbar.
  • the braking shoes facing the wheels of the vehicle are arranged.
  • This mechanism is fixed to points on the frame of the vehicle in such a way that it normally hangs from said frame.
  • this mechanism is often referred to as a "brake triangle" because the main bar and auxiliary bars form a triangle lying in a horizontal plane.
  • the wheels do not have a fixed position, but can change position along a direction transverse to travel depending on the gauge of the track the vehicle is on. vehicle.
  • the width can vary, for example, between international width (1435 mm) and Iberian width (1668mm). This forces the shoes to move along the main bar or its extension in a coordinated manner with the wheels, in such a way that each shoe is located in front of the corresponding wheel at all times. It is also important that the shoes maintain the vertical orientation for any of the possible wheel widths.
  • FIG. 1 shows an example of a brake mechanism of this type where it can be seen how the shoe (100) has a pair of plates (110) that protrude into a vertical plane parallel to the direction of movement, in such a way which are located one on each side of the wheel (120). This means that, when the wheel (120) moves between one width and another, the shoe (100) slides with it along the elements that constitute the support points of the brake mechanism. Specifically, the shoe (100) is fixed to a shoe holder (130).
  • the shoe holder (130) is hung from the lower end of a connecting rod (140), the upper end of said connecting rod (140) being slidingly connected to a horizontal suspension bolt (150) rigidly fixed to the frame (160). ) vehicle.
  • the shoe holder (130) is also connected in a sliding manner to a knuckle (170), also horizontal, which constitutes the extension of the brake triangle. In this way, the complete brake triangle is hung from the two suspension bolts (150) corresponding to a pair of wheels.
  • This mechanism allows the shoe (100) to maintain its vertical attitude at all times, keeping it separated from the wheel (120) when braking efforts are not being applied to the triangle.
  • this mechanism has the serious drawback that, by supporting the connecting rod (140) the weight of the entire brake triangle, that is, the weight of the main bar and the auxiliary bars (not shown in these drawings), as well as As well as the elements described in the previous lines (shoe, shoe holder, etc.), the friction between the upper end of the connecting rod (140) and the suspension bolt (150) when the shoe (100) moves during a gear change. track width is very high.
  • the clearances required in the assembly cause the connecting rod (140) to tend to lose perpendicularity with the suspension bolt (150), which could cause blocking of the movement of the shoe (100) during the width change.
  • the railway axles enjoy freedom of movement with respect to the vehicle, which can move freely between some sliders on the frame or bogie to facilitate the registration in curves and the self-centering movement.
  • This freedom of movement can cause that in the event of high oscillations during a braking operation, when the connecting rod is blocked, the plates support high loads and even break.
  • the present invention describes a brake mechanism for railway vehicles with track gauge change axles that solve the previous problems thanks to the provision of an additional connecting rod.
  • a first connecting rod supports the efforts due to the weight and the reaction during the braking operation and a second connecting rod only supports the efforts directly related to the displacement of the shoe. This greatly reduces the chance of breakage.
  • any reference to relative positional terms such as “upper”, “lower”, “horizontaf', “verticaf', etc. they are interpreted taking into account the natural position of the mechanism of the invention when it is installed in a railway vehicle.
  • double joint refers to a joint that allows rotation about two mutually perpendicular axes.
  • a cardan joint would be a particular case of double joint.
  • the brake mechanism of the present invention comprises a main bar connected to two auxiliary bars in such a way that they form a triangle where, in turn, each end of the main bar comprises the following elements: a) A knuckle that constitutes an extension of the own main bar. b) A reaction connecting rod having a lower end rotatably connected to the knuckle and an upper end configured for rotatably connecting to a rail vehicle frame. The axes of rotation of the rotary connection of the reaction rod with the frame and of the rotary connection of the reaction rod with the spindle are both parallel to said spindle. c) A shoe fixed to a shoe holder which, in turn, is slidingly connected to the spindle.
  • the shoe holder comprises two side plates configured so that they are located on both sides of the wheel of a railway vehicle, in such a way that they force the shoe holder to move along the knuckle when the wheel moves during a gauge change process. of track.
  • the brake mechanism of the present invention differs from those in that it further comprises a suspension link having an upper end rotatably connected to the reaction link and a lower end connected by a double hinge to the shoe holder.
  • the axis of rotation of the rotary connection of the suspension link with the reaction rod is perpendicular to the knuckle, while the axes of rotation of the double joint that constitutes the connection of the suspension link with the shoe carrier are respectively parallel and perpendicular to the spindle.
  • the double joint can be, for example, a cardan joint.
  • one of the rotary connection of the suspension link with the reaction link and the rotary connection of the suspension link with the shoe holder comprises an elongated hole configured to allow the end of the suspension link connected to said elongated hole move up or down when the shoe carrier moves along the knuckle.
  • This new brake mechanism solves the previous problems because, by separating the transmission of the mechanism's own weight and the reactions of braking efforts to the shoe holder, it allows said shoe holder to slide without problems along the knuckle in any circumstance , even in the event of emergency braking during a track gauge change process.
  • the vertical attitude of the shoe is maintained thanks to the suspension link, which is kept in the same plane as the reaction link and which can move laterally thanks to the elongated hole to which it is connected by one of its ends.
  • the elongated hole could be arranged in either of the two ends of the suspension link as long as it allowed the vertical displacement of said end. caused by displacement of the shoe holder along the knuckle.
  • the elongated hole is provided at the connection between the upper end of the suspension link and the reaction link.
  • the elongated hole is provided in a plate connected to the upper end of the reaction rod.
  • the elongated hole can be a straight slot oriented essentially in the vertical direction.
  • connection of the reaction rod with the knuckle could be carried out through any suitable rotary connection means, although in a particularly preferred embodiment of the invention the lower end of the reaction rod is connected to the knuckle through a lug, which can be located at an inner end of said spindle.
  • the inner end refers to the end of the knuckle closest to the central plane of symmetry of the mechanism, that is, the end closest to the center of the main bar of the brake triangle.
  • reaction rod could be implemented in different ways, according to a further preferred embodiment of the invention it comprises an elongated body provided with two holes at the ends, where the axis of the elongated body is inclined relative to a plane perpendicular to the axes of said holes. In this way, the lower end of said reaction rod is displaced in relation to the vertical of the upper end of the same to allow space for the displacement of the shoe holder along the knuckle.
  • Fig. 1 shows a detail of an example of a brake mechanism according to the prior art already installed in a railway vehicle.
  • Fig. 2 shows an example of a brake mechanism according to the present invention.
  • Fig. 3 shows a detail of the exemplary brake mechanism according to the present invention.
  • Fig. 4 shows the triangle formed by the main bar and the auxiliary bars belonging to the example of the brake mechanism according to the present invention.
  • Fig. 5 shows the reaction rod belonging to the example of brake mechanism according to the present invention.
  • Fig. 6 shows the suspension link belonging to the example of the brake mechanism according to the present invention.
  • Fig. 7 shows the shoe and the shoe holder belonging to the example of the brake mechanism according to the present invention.
  • Fig. 8 shows the example of the brake mechanism according to the present invention installed in a railway vehicle.
  • Fig. 9 shows a perspective view of the example of the brake mechanism according to the present invention.
  • Figs. 10a-10c show three positions of the exemplary brake mechanism according to the present invention.
  • the brake mechanism (1) comprises a main bar (2) connected to two auxiliary bars (3) in such a way that a triangle is formed.
  • auxiliary bars (3) At each end of the main bar (2), as an extension, there is a spindle (4).
  • the spindle (4) can be an independent piece connected to the triangle formed by the main bar (2) and auxiliary bars (3), or it can be part of the main bar (2) itself.
  • An elongated lug (12) is rigidly fixed to the inner end of the spindle (4) so that it protrudes perpendicularly to the axis of the spindle (4) itself.
  • a reaction connecting rod (5) has a lower end fixed to the lug (12) by means of a rotary union whose axis is parallel to the knuckle (4) and an upper end fixed to the frame (200) also by means of a rotary union of axis parallel to the spindle (4).
  • the mechanism (1) of the invention also has a suspension rod (9) that has an upper end rotatably fixed to the upper end of the reaction rod (5) and a lower end fixed by a double joint (13) to a shoe holder (7).
  • the connection rotation between the suspension rod (9) and the reaction rod (5) is carried out through a plate (1 1 ) fixed to the upper end of the reaction rod (5) and its axis of rotation is perpendicular to the stub axle (4). More specifically, the plate (11) has an elongated or slotted hole (10) into which a rotary union pin is inserted.
  • connection between the suspension rod (9) and the shoe holder (7) is the aforementioned double joint (13) that has one of its rotation axes parallel to the knuckle (4) and the other of said axes of rotation. rotation parallel to the axis of rotation of the connection between suspension rod (9) and reaction rod (5) and, therefore, perpendicular to the knuckle (4).
  • the shoe holder (7) is similar to those used in conventional brake mechanisms. It is a piece that is connected to the spindle (4) in a sliding manner and is made up of a triangular structure to which the footing (6) is fixed and from which some side plates (8) also protrude which, when the mechanism (1) is installed in a railway vehicle, they are located on both sides of the wheel (300) of the vehicle.
  • Main (2)/Auxiliary (3)/Knuckle (4) Bar As shown in Fig. 4, the main (2) and auxiliary (3) bars are arranged to form a triangle with extended knuckle ( 1 ). This allows the shoe holder (7) to slide between the different track gauges that the variable gauge axle can adopt.
  • the spindle (4) also has lugs (12) for fixing the reaction rod (5) with the axis of rotation at the same distance from the spindle (4) as the axis of the double joint (13) of the connection between suspension link (9) and shoe holder (7) which is parallel to the knuckle (4).
  • Reaction connecting rod (5) As shown in Fig. 5, this is the connecting rod (5) in charge of transmitting the reaction efforts to the frame (200).
  • the reaction link (5) is similar to a conventional suspension link but has a bent configuration to fit the frame mount (200) so that no modification to it is necessary. That is, the reaction connecting rod (5) has an elongated body (51) provided with two holes (52, 53) at the ends, the axis of the elongated body (51) being inclined relative to a plane perpendicular to the axes of said holes (52, 53).
  • the reaction rod (5) has, at its upper end, a plate (11) provided with a slotted hole (10) oriented in an essentially vertical direction for connection with the suspension rod (9).
  • Suspension connecting rod (9) As can be seen in Fig. 6, it is the connecting rod (9) in charge of maintaining the attitude of the shoe (6) so that it does not rotate and rest on the wheel (300).
  • the suspension rod (9) connects the plate (11) provided with the slotted hole (10) of the reaction rod (5) with the shoe holder (7) through the double joint (13).
  • the suspension rod (9) only supports the rotational moment of the shoe holder (7) due to its own weight, but does not transmit braking or reaction forces.
  • Shoe holder (7) As can be seen in Fig. 7, the shoe holder (7) has a pair of side plates (8) to confine the wheel so that it moves together with it and with a double joint (13) fixed by a bolt for the connection to the suspension rod (9)
  • Fig. 8 shows the brake mechanism (1) according to the present invention fixed to a railway vehicle.
  • Fig. 9 shows a perspective view of the brake mechanism (1) according to the present invention different from the one shown in Fig. 3.
  • Figs. 10a-10c show three different positions of the brake mechanism (1) according to the present invention.
  • the bent configuration of the reaction rod (5) provides space for the shoe holder (7) to move along the knuckle (4) to follow the wheel (300) in its displacement during a procedure. track gauge change.

Landscapes

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

Abstract

La présente invention concerne un mécanisme de frein (1) pour des véhicluels ferroviaires ayant des axes de largeur de voie qui ont une bielle de suspension (9) qui présente une extrémité supérieure accouplée de manière rotative à la bielle de réaction (5) et une extrémité inférieure accouplée au moyen d'une articulation double (13) au porte-sabot (7). De plus, un élément entre l'accouplement rotatif de la bielle de suspension (9) avec la bielle de réaction (5) et l'accouplement rotatif de la bielle de suspension (9) avec le porte-sabot (7) comprend un orifice élargi (10) qui permet à l'extrémité de la bielle de suspension (9) accouplée audit orifice élargi (10) de monter ou de descendre quand le porte-sabot (7) se déplace le long de la fusée (4).
PCT/ES2023/070038 2022-01-25 2023-01-24 Mécanisme de frein pour véhicules ferroviaires avec des axes de changement de largeur de voie WO2023144434A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES202230055A ES2902457B2 (es) 2022-01-25 2022-01-25 Mecanismo de freno para vehiculos ferroviarios con ejes de cambio de ancho de via
ESP202230055 2022-01-25

Publications (1)

Publication Number Publication Date
WO2023144434A1 true WO2023144434A1 (fr) 2023-08-03

Family

ID=80854521

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ES2023/070038 WO2023144434A1 (fr) 2022-01-25 2023-01-24 Mécanisme de frein pour véhicules ferroviaires avec des axes de changement de largeur de voie

Country Status (2)

Country Link
ES (1) ES2902457B2 (fr)
WO (1) WO2023144434A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR849826A (fr) * 1938-10-11 1939-12-02 Esslingen Maschf Dispositif servant à modifier l'écartement des roues d'un véhicule, notamment des roues des wagons de chemin de fer
ES2179245T3 (es) * 1997-06-13 2003-01-16 Deutsche Bahn Ag Dispositivo de traslacion de pastillas de freno.
WO2004009421A1 (fr) * 2002-07-24 2004-01-29 Korea Railroad Research Institute Bielle de suspension de porte-semelle de frein sans torsion destine a etre utilise dans le bogie d'un vehicule ferroviaire
CN110001704A (zh) * 2019-04-24 2019-07-12 中车齐齐哈尔车辆有限公司 转向架及其制动杆
KR20210018596A (ko) * 2019-08-06 2021-02-18 한국철도기술연구원 궤간가변 대차에 적용되는 답면 제동장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR849826A (fr) * 1938-10-11 1939-12-02 Esslingen Maschf Dispositif servant à modifier l'écartement des roues d'un véhicule, notamment des roues des wagons de chemin de fer
ES2179245T3 (es) * 1997-06-13 2003-01-16 Deutsche Bahn Ag Dispositivo de traslacion de pastillas de freno.
WO2004009421A1 (fr) * 2002-07-24 2004-01-29 Korea Railroad Research Institute Bielle de suspension de porte-semelle de frein sans torsion destine a etre utilise dans le bogie d'un vehicule ferroviaire
CN110001704A (zh) * 2019-04-24 2019-07-12 中车齐齐哈尔车辆有限公司 转向架及其制动杆
KR20210018596A (ko) * 2019-08-06 2021-02-18 한국철도기술연구원 궤간가변 대차에 적용되는 답면 제동장치

Also Published As

Publication number Publication date
ES2902457B2 (es) 2022-11-11
ES2902457A1 (es) 2022-03-28

Similar Documents

Publication Publication Date Title
BR102015031306A2 (pt) truque motorizado para um veículo ferroviário de baixo piso
ES2926198T3 (es) Conjunto de bastidor de suspensión de vehículo de levitación magnética
ES2639581T3 (es) Vehículo ferroviario intermodal mejorado para formar un tren
ES2901700T3 (es) Mecanismo seguidor y unidad de pinza de freno para vagón de trocha variable
ES2642047T3 (es) Bogie de dirección para material rodante, material rodante y vehículo articulado
ES2784925T3 (es) Autobús articulado en forma de vehículo terrestre con ruedas en partes múltiples así como un procedimiento para la dirección del vehículo trasero de dicho autobús articulado
PT1770049E (pt) Grua
BR102013000425A2 (pt) Sistema de suspensão de veículo automotor com braços de controle transversais e mola de lâmina central conectando os braços
BR112012029168B1 (pt) Rolamento lateral completo para uso em carro vagão de carga ferroviário tipo-rolamento
BR102013033170B1 (pt) Conjunto de travessão de freio, e, truque de vagão ferroviário
PT1704078E (pt) Eixo de direcção para veículos, em particular para veículos de obras públicas ou tractores agrícolas
ES2665792T3 (es) Disposición de tope y dispositivo de freno con tal disposición de tope
ES2714499T3 (es) Dispositivo para la transmisión de fuerza entre un chasis y un cuerpo de vagón de un vehículo ferroviario
ES2247108T3 (es) Carrito automotor apto para desplazarse en una galeria cilindrica.
ES2772255T3 (es) Suspensión de eje en tándem neumática para un par de ejes traseros de un vehículo, en particular un vehículo de mercancías pesado
BR112020021815A2 (pt) dispositivo de suspensão de caixa de eixo e truque tendo o mesmo
BR102016013017A2 (pt) truque de vagão de carga ferroviário
ES2635592T5 (es) Accionamiento para vehículos sobre carriles
ES2902457B2 (es) Mecanismo de freno para vehiculos ferroviarios con ejes de cambio de ancho de via
ES2334014T3 (es) Bogie para vehiculos ferroviarios de ruedas a distancia variable.
ES2285044T3 (es) Vehiculo articulado.
BR112017017319B1 (pt) Sistema de frenagem para vagão ferroviário e suporte para conectar haste fixa, haste móvel e atuador no referido sistema de frenagem
ES2342545T3 (es) Bogie para vehiculos ferroviarios, de ruedas que se orientan de acuerdo con la curvatura de las vias.
BR112012029166B1 (pt) Rolamento lateral inferior de dois estágios de atrito de peso vazio para uso em carro vagão de carga ferroviário
PT99475B (pt) Eixo ferroviario com rodas orientaveis e largura variavel

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23746531

Country of ref document: EP

Kind code of ref document: A1