EP0109910B1 - Bogie for a railway vehicle - Google Patents

Bogie for a railway vehicle Download PDF

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Publication number
EP0109910B1
EP0109910B1 EP83402244A EP83402244A EP0109910B1 EP 0109910 B1 EP0109910 B1 EP 0109910B1 EP 83402244 A EP83402244 A EP 83402244A EP 83402244 A EP83402244 A EP 83402244A EP 0109910 B1 EP0109910 B1 EP 0109910B1
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EP
European Patent Office
Prior art keywords
bogie
longitudinal
members
bogie according
articulated
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.)
Expired
Application number
EP83402244A
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German (de)
French (fr)
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EP0109910A2 (en
EP0109910A3 (en
Inventor
Georges Pinto
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.)
SOCIETE M T E SOCIETE ANONYME
Original Assignee
M T E SA Ste
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Publication date
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Priority to AT83402244T priority Critical patent/ATE31684T1/en
Publication of EP0109910A2 publication Critical patent/EP0109910A2/en
Publication of EP0109910A3 publication Critical patent/EP0109910A3/en
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Publication of EP0109910B1 publication Critical patent/EP0109910B1/en
Expired 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
    • B61F3/00—Types of bogies
    • B61F3/02—Types of bogies with more than one axle
    • B61F3/04—Types of bogies with more than one axle with driven axles or wheels
    • 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
    • B61F5/02—Arrangements permitting limited transverse relative movements between vehicle underframe or bolster and bogie; Connections between underframes and bogies
    • B61F5/14—Side bearings
    • B61F5/144—Side bearings comprising fluid damping devices
    • 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
    • B61F5/02—Arrangements permitting limited transverse relative movements between vehicle underframe or bolster and bogie; Connections between underframes and bogies
    • B61F5/22—Guiding of the vehicle underframes with respect to the bogies
    • B61F5/24—Means for damping or minimising the canting, skewing, pitching, or plunging movements of the underframes

Definitions

  • the present invention relates to a railway bogie supporting a car body plumb with the side members, using fluid suspension elements, the longitudinal, lateral and rotational forces being transmitted and absorbed by means of connecting rods and links which are supported in whole or in part by said fluid suspension elements. More particularly the invention relates to a bogie without load cross member or dancer for the regional high-speed metro, having fluid springs, in particular pneumatic mounted on. each side member and elastically supporting the car body. It is particularly applicable to bogies having 'tanks.
  • the state of the art includes a large number of bogies and suspension systems for supporting bodies of railway vehicles.
  • the support systems that use a cross member carried by the springs and articulated to the car chassis around a vertical axis in the center of the bogie or near it and the support systems mounted in direct alignment with the side members in which case the vehicle body is generally slidably mounted directly on springs or on support surfaces on the springs without a cross member being interposed between the springs and the body.
  • US Pat. No. 3,646,893 describes a bogie having a suspension frame intended to rigidly connect four tubular bellows which receive the air pressure from a pressure tank housed in the body.
  • the arrangement adopted causes wear in the sliding joints located between the tubular bellows and the suspension frame. This state of the art is not particularly suitable for joints in the regional high-speed metro service or in cases where there are many curves.
  • US Patent 3,774,549 corresponding to the preamble of claim 1, describes a rail bogie of the type without dancer cross member for resiliently supporting a car body comprising a pair of side rails extending laterally and mounted on axles, fluid springs. mounted on said longitudinal members, a pair of pendulums mounted on the springs and intended to carry the weight of the body directly above the longitudinal members and at least one pair of connecting rods each articulated to a pendulum.
  • the air intended for the springs is supplied by reservoirs forming part of the bogie so as to eliminate the problem which consists in keeping a constant coincidence between the orifices of the support plates of the body and an orifice in the suspended load-bearing element.
  • the central pivot of the body is connected to a transverse connection system which is not intended to transmit and absorb the lateral, longitudinal and rotational forces between the body and the side members and which constitutes a relatively rigid connection in the vertical plane.
  • the object of the present invention is to remedy the drawbacks of known bogies.
  • the invention as characterized by the claims relates to a hinged interconnection assembly between the central pivot and longitudinal pendulums which are resiliently mounted on pneumatic or hydraulic springs disposed on the side members and provided with support surfaces and support to support the total weight of the body above the side rails.
  • the pair of longitudinal balances has seals disposed between the sliding bearing surface of the body frame and holes in the longitudinal balances which provide fluid pressure to the springs.
  • the longitudinal pendulums are elastically interconnected to a central coupling piece by means of connecting rods which are articulated along a horizontal axis to each longitudinal balance and to the central coupling piece to transmit and absorb the longitudinal forces. and sides of the body to the longitudinal pendulums.
  • the longitudinal pendulums provide the sliding support of the body plumb with the side members and provide the support for part of the weight of the central coupling body and connecting rods.
  • the articulated interconnection between the central coupling piece, the connecting rods and the longitudinal beams in combination with the elastic interconnection between the connecting rods and the bogie chassis allows the transmission and absorption of lateral, longitudinal and rotational forces between the body and chassis.
  • the new articulated interconnection is particularly advantageous in the uses of regional express and high-speed metro or on curved track and if the fluid reservoir for actuating the fluid springs is placed in the car body or at a location remote from the bogie. In these applications the rotational forces exerted between the body and the bogie have a detrimental effect on the conservation of the joints arranged between the bogie and the body, particularly in the case of insufficient air pressure at the air springs.
  • the use of longitudinal pendulums to support the weight of the car body above the lateral chassis provides a better distribution of loads and surface contact between the chassis of the chassis and the longitudinal balancers.
  • the outer sides of the side members are free to allow the installation of current connectors and the vertical damper can be placed in the center of the bogie.
  • the bogie according to the invention serves to reduce the effect of the longitudinal, lateral and rotational forces of the body on the seals which increases the ease of maintenance and the service life and provides advantages as regards the operation.
  • the invention reduces maintenance and allows a more efficient arrangement of parts and organs than in the prior art.
  • the invention makes it easier to maintain the parts and organs of the bogie because it makes it possible to lift the body and the bogies without requiring special equipment.
  • the lifting of the body and the bogie can be carried out easily without special tools by lifting the bogie by the pivot points in order to allow and facilitate the inspection and maintenance of the sealing device.
  • the articulated interconnection of the longitudinal beams with the connecting rods and the central coupling piece facilitates the maintenance and replacement of the individual components.
  • the bogie provides greater elasticity and absorption of forces to facilitate maintenance and the operating life of the bogie.
  • the invention is particularly suitable for articulated chassis to contribute to overall resilience and is advantageously used in regional high-speed metro networks and for infrastructures comprising sections of curved and irregular track.
  • the bogie has longitudinal members on which are mounted fluid springs supporting the body and it is characterized in that it comprises a pair of longitudinal pendulums mounted on said springs and intended to support the weight of the body and a pair of connecting rods each articulated with a balance and a central coupling piece provided with means for the relative pivoting of the body and the bogie.
  • each connecting rod is connected to the side members by an attachment rod.
  • the bogie comprises a transverse damper mounted between said central coupling piece and said longitudinal members.
  • the bogie 20 comprises a bogie frame 22 having two longitudinal beams 24 and 26 on which four wheels are rotatably mounted by means of the axles 30 and 32. Each axle box is trapped at the end of a beam with the interposition of an elastic sleeve allowing slight deformation.
  • the bogie 20 in its preferred embodiment is a motor bogie such as those used in the regional high-speed express metro networks and it includes drive motors 34 and 36.
  • the side members 24 and 26 preferably comprise cross members 38 and 40 respectively which are coupled by bearings 42 and 44 which preferably allow pivoting relative between the side members 24 and 26 and allow the wheels to remain in contact with irregular track sections.
  • the principle of the articulated bogie is known per se and will not be described more fully. The organs of the articulated bogie cooperate with the elements of this bogie to impart greater elasticity to the overall combination.
  • the bogies 20 support the total weight of the car body 46 plumb with the side members 24 and 26.
  • the total vertical force or the load exerted by the body 46 is resiliently supported plumb with the side members 24 and 26 by pneumatic or hydraulic springs 48 of the cushion type.
  • two pneumatic springs 48 are arranged on each beam 24 or 26.
  • a pair of longitudinal beams 50 and 52 longitudinally couple the pneumatic springs 48 on each of the beams 24 and 26.
  • Longitudinal beams 50 and 52 are designed to occupy and close the tops 54 (FIG. 3) of the air springs 48 and they are provided with orifices 56 for supplying air or fluid pressure to the air springs 48.
  • each pneumatic springs is closed by a plate 58 disposed on a beam.
  • the upper ends of the air springs are tightly joined to the longitudinal pendulums in order to conserve the air pressure supplied to the orifices 56 of the longitudinal balancers 50 and 52.
  • the longitudinal pendulums 50 and 52 in combination with the pneumatic springs 48 support the weight of the body, bearing on the chassis 60 and 62 of the body 46, plumb with the side members 24 and 26.
  • the air pressure is supplied from two tanks 64 and 66 arranged on the car body 46 and connected by conduits 68 and 70 to the orifices 56 in the longitudinal beams so as to provide an elastic support for the weight of the body applied to each of the longitudinal beams 50 and 52.
  • the bogie supports the load or the vertical force exerted by the car body 46 plumb with the side members.
  • the load on the longitudinal members 24 and 26 constitutes the total vertical load or effort exerted by the body on each of the longitudinal pendulums 50 and 52 in association with the pneumatic springs 48.
  • the weight of the body is partially supported by the longitudinal pendulums 50 and 52 and is denoted F2 in FIG. 10 and the remaining part of the weight of the body 46 is directly supported by the air pressure supplied to the pneumatic spring 48 and is denoted F1 in FIG. 10.
  • the vertical forces on the joints 72 in conjunction with the rotational forces acting on the joints 72 during the rotation of the car when it travels the curved sections of track is directly attributable to the sliding forces exerted on the joint and to the longitudinal and lateral forces between the bogie and the body. These efforts are reduced if an articulated connection exists between the central pivot and the air suspension system arranged on the lateral frames 24 and 26 of the bogie.
  • the known joint 72 (FIG. 10) supports a heavy load and in the case of insufficient air pressure carries the total load of the box. The lack of protection of the seals subjects them to wear and fatigue, particularly in the event of insufficient air pressure.
  • FIGS. 3 The articulated and elastic interconnection between the body 46 and the bogie 20 is better illustrated by FIGS. 3 and in which a central pivot 76 is disposed approximately at the center of the transverse spacer 77 of the body 46.
  • a central coupling piece 78 is provided for pivotally receiving the pivot 76 which is immobilized by a plate 80 fixed by bolts 82.
  • This coupling piece 78 has a ring 781 forming a housing in which the pivot 76 is engaged.
  • the central coupling piece 78 preferably comprises a bearing mount 84 (FIG. 1) for harness a transverse damper 86 which is linked to a console 87 mounted on the cross-member 38 (FIG. 3).
  • the function of the bearing assembly and the shock absorber 86 is to facilitate the damping of the lateral forces between the central pivot 76 of the body and the bogie 20.
  • the action of the rotational forces on the seals is illustrated diagrammatically in the figure 11.
  • the amplitudes of the efforts are significantly reduced due to the numerous pivoting and elastic joints between the central coupling part and the longitudinal pendulums as will be described in detail below.
  • the central coupling piece 78 does not support the weight of the body but on the contrary is mainly used for the interconnection of the central pivot 76 of the body with the bogie 20 to participate in the transmission of the longitudinal and lateral forces which result from the operation of the bogie 20 during the movement of the body 46.
  • the central coupling piece 78 includes bearing assemblies 88 and 90 having axes 92 and 94 respectively for the articulated and pivoting coupling with connecting rods 96 and 98.
  • the connecting rods 96 and 98 are linked in an articulated manner by the bearings 100 and 102 to the longitudinal pendulums 52 and 50 respectively.
  • An axis 104 can be provided in the bearings 100 and 102 to be mounted in a console or mounting 106 of the longitudinal rockers 50 and 52 so as to allow the articulated and elastic connection of the connecting rods 96 and 98 to the longitudinal rockers 50 and 52.
  • the weight of the central coupling piece 78 and the connecting rods 96 and 98 is supported in part by the longitudinal pendulums 50 and 52 and in part by the elastic interconnection of the connecting rods 96 and 98 to the crosspieces 38 and 40 via the bearings 108 and 110 respectively.
  • the connecting rods 96 and 98 each employ an arm 113 extending downward and having a support for receiving the bearings 108 and 110 of the connecting rods 116 and 118 which extend longitudinally and are articulated at the crosspieces 38 and 40 respectively. so as to provide longitudinal drive.
  • the connecting rod 116 comprises a bearing 110 at one end for the articulation to the connecting rod 98 and at the other end comprises a bearing 120 for mounting to the crosspiece 40.
  • the connecting rod 116 could be articulated to the side members 26 of the bogie.
  • the connecting rod 118 is articulated similarly to the cross member 38 of the bogie 20 or can be articulated directly to the side members 24 in the same manner as the connecting rod 116.
  • the mounting brackets 122 can be used on the cross members 38 and 40 for the articulated mounting of the connecting rods 118 and 116 respectively.
  • stops 124 can be provided on the connecting rods 116 and 118 to limit the rotational movement of said connecting rods and to lift the load of the bogie linked to the body 46.
  • a corresponding stop 126 can be used to form the second part of the stop element and can be placed on the crosspieces to facilitate the lifting of the bogie 20.
  • the elastic and articulated interconnection between the pivot 76 of the body and the longitudinal beams 50 and 52 of the bogie in combination with the arrangement of the components and their articulated connections to the cross member or to a part of the bogie frame 20 facilitates the dissipation and the transmission of longitudinal lateral and rotational forces between the body and the bogie.
  • the dissipation and transmission of these forces provides advantages in the operation of the bogie and increases the service life of the joints between the longitudinal pendulums and the body containing the tanks 64 and 66 which supply the fluid pressure to the air springs 48.
  • the bogie allows the transmission and absorption of the rotational forces, lateral and longitudinal between the bogie 20 and the body 46 not only by the articulations formed by the axes and the bearings 88, 90, 92, 94, 100, 102 and 108, 110 and 120 but also by the connections comprising the length of the arms of the connecting rods 96 and 98 and their articulation to the longitudinal pendulums 50 and 52 and the length of the arms 112 to the crosspieces 38 and 40 of the bogie 20.
  • the joints 88 and 90 between the central coupling piece and the connecting rods and the joints 100 and 102 between the connecting rods and the longitudinal balances each ensure articulation around a substantially horizontal and longitudinal axis with preferably a elasticity in rotation (or torsion), conical, axial and radial.
  • Each articulation has a longitudinal cylindrical axis surrounded in an elastic elastomer sleeve engaged in a housing of a first articulated part, the ends of the axis being fixed in the second articulated part.
  • Each joint ensures an axial connection with preferably a certain elasticity between the parts.
  • elastic axial stops 89, 91, 101, 103 are provided on each end of the articulations to obtain elasticity in the longitudinal direction while transmitting the longitudinal forces.
  • the body pivot is only connected to the central coupling piece.
  • the support of the body 46 by the bogies according to the invention allows the transmission and the dissipation of the rotation forces, lateral and longitudinal so as to eliminate the load cross member and allow the total support of the body to be plumb with the side members with the transmission and absorption of forces which would otherwise be harmful to the joints between the body and the side members supporting the suspension system.
  • This arrangement allows the efficient use of space and organs and the elimination of organs hitherto prescribed in the prior art.
  • the impact of the force on the longitudinal balances can be dissipated by a pair of shock absorbers 130 and 132 arranged outside the longitudinal balances to facilitate the damping of the vertical forces between the body 46 and the bogie 20.
  • These shock absorbers 130 and 132 can be connected at one end by an attachment 134 to the longitudinal beams 50 and 52 and at the other end 136 to the side members 24, 26 respectively.
  • the car body 46 is supported plumb with the side members by means of the longitudinal beams 50, 52.
  • These longitudinal beams provide advantages by allowing better support between the beams 60 and 62 of the body 46 and each of the longitudinal beams 50 and 52.
  • the longitudinal balances operate with a sliding joint between the chassis 60 and 62 of the body and the longitudinal balances.
  • a known seal can be used (FIG. 3) comprising an adjustment shim 140, a Teflon friction plate 142, an elastomer or rubber seal 72 as illustrated in FIG. 10 and a protective plate 144.
  • These standard seals can be used according to the invention to obtain advantages in the operation of the new bogie.
  • a new seal illustrated in Figure 9 can be used to improve the stability, preservation and life of the seal.
  • a conduit 70 supplies the fluid or air pressure from a reservoir housed in the body such as 66 with pneumatic springs 48 supported by the side members 24 and 26.
  • the air supply duct 70 has a connection end piece 150 and an adjustment shim 152 interposed between the body frame and a friction plate 154 which slides on a sliding shoe, stainless steel, oval or annular.
  • the stainless steel sliding pad 156 has a recess for receiving an elastomer or rubber seal 158 above which the teflon friction plate 154 slides relative to the stainless steel plate 156.
  • the increased surface provided by the new seal in combination with the arrangement of a rubber or elastomer seal inside the pad or the plate provides advantages in stabilizing the longitudinal balance relative to the body and increases the service life.
  • the recess provides housing and protection for the elastomer or rubber seal not only during normal operation but also in the event of insufficient air pressure. Under these conditions the total weight of the body does not bear on the rubber or elastomer seal but is on the contrary transmitted by the support provided by the combination of metal plates and friction.
  • the air pressure supplied by the duct 70 is sent through the orifice 56 in the longitudinal balance 52 to the pneumatic spring 48.
  • a scraper seal 160 is mounted around the plate 154 so as to slide between the teflon plate 154 and the sliding shoe in stainless steel 156 and the seal 158 to prevent dust and foreign matter from interfering with the conservation of the seal in the rotational movement of the bogie in curves.
  • the sliding contact between the friction plate 154 in Teflon and the sliding shoe in stainless steel 156 and the seal 158 support the indirect load exerted by the body on the side members as well as the pressure noted F2 and the direct load of the body marked F1 which is directly supported by the air suspension device.
  • the advantages of the invention can also be used in embodiments using a single elastic support means such as an air spring 48 on each beam 24 and 26 of the bogie 180 as illustrated by FIGS. 12 and 13.
  • the bogie 180 illustrated in FIGS. 12 and 13 uses two beams 24 and 26 having cross members 38 and 40 and members similar to the bogie 20 described above.
  • the organs which have the same functions as those described above have the same references and the description will be limited to the organs which have been modified.
  • the application of the present invention to a single air spring 48 uses a modified longitudinal balance having a single port 56 to provide air pressure to the air spring 48 as described above.
  • the orifice 56 can use a known seal or a new seal according to the embodiment which has been described above.
  • the longitudinal pendulums 182 disposed on a single pneumatic spring on each spar 24 and 26 support the total weight of the body directly above the spars 24 and 26 as in the embodiment employing two pneumatic springs.
  • the longitudinal pendulums 182 are positioned directly above the pneumatic springs 48 and are each interconnected in an elastic manner and articulated to the connecting rods 96 and 98 as described above using connecting rods 116 and 118 and arms extending towards the bottom 112 to facilitate the transmission and absorption of the rotational, lateral and longitudinal forces between the body pivot and its elastic and articulated interconnection with the side members 24 and 26 by means of the longitudinal pendulums 182.
  • the articulated coupling by coupling rods between the connecting rods and the crosspieces can be used to carry part of the load directly by the crosspieces 38 and 40 in the manner described above.
  • the weight of the body is partly directly supported by the air suspension system directly above the side members while the remaining part of the weight of the body is indirectly supported by the longitudinal pendulums.
  • the longitudinal pendulums have a slightly different configuration and have buffers 186 to limit their downward movement relative to the side members and to support the entire load of the body 146 directly on the side members 24 and 26 in the event of insufficient pressure. of the hydraulic or pneumatic fluid necessary to inflate the bellows of the springs 48.
  • the central coupling piece 188 is similar to the coupling piece 78 described above and comprises a bearing assembly 84 and a shock absorber 86 for attaching it to the spar 24 of the bogie 180.
  • the modified coupling piece 188 comprises a conical housing 190 illustrated in FIG. 14 and intended to receive a modified conical pivot 192 of the chassis of the body 77 to facilitate the rotational stability of the central coupling piece 188 around its axes of longitudinal and lateral rotation.
  • This rotational stability is obtained by lengthening the pivot 192 of the body 77 and by providing, at the top of the central coupling piece 188, a closed bearing 194 and, at the lower end of the pivot 192, a second closed bearing 196
  • the pivot 192 is fixed vertically in the central coupling piece 188 by means of a support plate 198 which is fixed to the pivot by bolts 200.
  • the bogie according to the invention can be modified as regards the couplings, the pivots, the sealing devices and the articulations of the suspension system to further increase the advantages of the elastic interconnection between a central coupling piece and a elastic support system using longitudinal pendulums above one or more pneumatic springs.

Abstract

1. A railway bogie of the type without dancing cross-beam for elastically supporting a car carriage (46), comprising a pair of side-members (24, 26) which extend laterally and are mounted on axles (30, 32), fluid springs (48) mounted on said side-members, a pair of longitudinal beams (50, 52, 182) mounted on said springs and conceived to support the weight of the carriage perpendicularly to the said side-members, and a pair of connection rods (96, 98) each one articulated at one of said beams, characterized in that said rods (96, 98) comprise articulations of a horizontal axis and that it further comprises a central coupling piece (78, 188) articulated at said pair of rods (96, 98) and provided with means (76, 192) for allowing a relative pivoting of the carriage and the bogie.

Description

La présente invention se rapporte à un bogie ferroviaire supportant une caisse de voiture à l'aplomb des longerons, à l'aide d'éléments de suspension à fluide, les efforts longitudinaux, latéraux et de rotation étant transmis et absorbés par l'intermédiaire de bielles et de liaisons qui sont supportées en totalité ou en partie par lesdits éléments de suspension à fluide. Plus particulièrement l'invention se rapporte à un bogie sans traverse de charge ou danseuse pour le métro régional à grande vitesse, présentant des ressorts à fluide notamment pneumatiques montés sur. chaque longeron et supportant élastiquement la caisse de voiture. Elle est particulièrement applicable aux bogies présentant des réservoirs de'. fluide disposés dans le sous-châssis de voiture et dans lequels la communication entre les réservoirs de fluide et les ressorts à fluide est réalisée par des orifices dans la caisse en correspondance avec des orifices ménagés dans le haut des ressorts, des joints d'étanchéité étant disposés entre lesdits orifices.The present invention relates to a railway bogie supporting a car body plumb with the side members, using fluid suspension elements, the longitudinal, lateral and rotational forces being transmitted and absorbed by means of connecting rods and links which are supported in whole or in part by said fluid suspension elements. More particularly the invention relates to a bogie without load cross member or dancer for the regional high-speed metro, having fluid springs, in particular pneumatic mounted on. each side member and elastically supporting the car body. It is particularly applicable to bogies having 'tanks. fluid arranged in the sub-frame of the car and in which the communication between the fluid reservoirs and the fluid springs is carried out by orifices in the body in correspondence with orifices formed in the top of the springs, seals being disposed between said orifices.

L'état de la technique comporte un grand nombre de bogies et de systèmes de suspension pour supporter des caisses de véhicules ferroviaires. On peut séparer dans cet état de la technique, les systèmes de support qui utilisent une traverse portée par les ressorts et articulée au châssis de voiture autour d'un axe vertical au centre du bogie ou près de celui-ci et les systèmes de support montés en alignement direct avec les longerons auquel cas la caisse du véhicule est généralement montée glissante directement sur des ressorts ou sur des surfaces de support sur les ressorts sans qu'une traverse soit interposée entre les ressorts et la caisse. Comme documents représentatifs de la technique antérieure utilisant des traverses on peut citer les brevets américains N° 3 704 670, 4192239, 3712245, 3547046, 2 913 998 et 3 523 505. Dans cet état de la technique, la charge de la caisse ou les efforts verticaux exercés par la caisse sont indirectement supportés ou sont décalés d'une position à l'aplomb des châssis latéraux du bogie.The state of the art includes a large number of bogies and suspension systems for supporting bodies of railway vehicles. We can separate in this state of the art, the support systems that use a cross member carried by the springs and articulated to the car chassis around a vertical axis in the center of the bogie or near it and the support systems mounted in direct alignment with the side members in which case the vehicle body is generally slidably mounted directly on springs or on support surfaces on the springs without a cross member being interposed between the springs and the body. As representative documents of the prior art using sleepers, mention may be made of US Pat. Nos. 3,704,670, 4,192,239, 3,712,245, 3,547,046, 2,913,998 and 3,523,505. vertical forces exerted by the body are indirectly supported or are offset from a position directly above the side frames of the bogie.

On a reconnu dans l'état de la technique les avantages relatifs à l'élimination d'une traverse notamment pour la réduction de poids et les avantages de fonctionnement et de facilité d'entretien. Les avantages sont particulièrement appropriés aux bogies articulés et aux bogies jouissant de flexibilité le long d'un axe horizontal oblique entre les châssis latéraux. Les brevets US 2 636 451, 3 646 893 et 3 774 549 se rapportent à des bogies sans traverse de charge. Dans le brevet US 2 636 451 précité où la traverse de charge est éliminée, la charge est portée à l'aplomb des longerons pour permettre l'indépendance des ressorts. Le pivot du bogie est connecté au châssis de bogie par l'intermédiaire de leviers.It has been recognized in the state of the art the advantages relating to the elimination of a cross member in particular for the reduction in weight and the advantages of operation and ease of maintenance. The advantages are particularly suitable for articulated bogies and bogies enjoying flexibility along an oblique horizontal axis between the side frames. US Patents 2,636,451, 3,646,893 and 3,774,549 relate to bogies without a load cross member. In the aforementioned US Pat. No. 2,636,451 in which the load cross member is eliminated, the load is brought directly above the side members to allow the independence of the springs. The bogie pivot is connected to the bogie frame via levers.

Le brevet US 3 646 893 décrit un bogie possédant un châssis de suspension destiné à intercon- necter rigidement quatre soufflets tubulaires qui reçoivent la pression d'air d'un réservoir de pression logé dans la caisse. La disposition adoptée provoque de l'usure dans les joints glissants situés entre les soufflets tubulaires et le châssis de suspension. Cet état de la technique n'est pas particulièrement adapté aux joints dans le service de métro régional à grande vitesse ou dans les cas où il y a de nombreuses courbes.US Pat. No. 3,646,893 describes a bogie having a suspension frame intended to rigidly connect four tubular bellows which receive the air pressure from a pressure tank housed in the body. The arrangement adopted causes wear in the sliding joints located between the tubular bellows and the suspension frame. This state of the art is not particularly suitable for joints in the regional high-speed metro service or in cases where there are many curves.

Le brevet US 3 774 549, correspondant au préambule de la revendication 1, décrit un bogie ferroviaire du type sans traverse danseuse pour supporter élastiquement une caisse de voiture comportant une paire de longerons s'étendant latéralement et montés sur des essieux, des ressorts à fluide montés sur lesdits longerons, une paire de balanciers montés sur les ressorts et destinés à porter le poids de la caisse à l'aplomb des longerons et au moins une paire de bielles de connexion articulées chacune à un balancier.US Patent 3,774,549, corresponding to the preamble of claim 1, describes a rail bogie of the type without dancer cross member for resiliently supporting a car body comprising a pair of side rails extending laterally and mounted on axles, fluid springs. mounted on said longitudinal members, a pair of pendulums mounted on the springs and intended to carry the weight of the body directly above the longitudinal members and at least one pair of connecting rods each articulated to a pendulum.

L'air destiné aux ressorts est foruni par des réservoirs faisant partie du bogie de façon à éliminer le problème qui consiste à garder une coïncidence constante entre les orifices des plaques d'appui de la caisse et un orifice dans l'élément porteur suspendu. Le pivot central de la caisse est connecté à un système de liaison transversal qui n'a pas pour but de transmettre et d'absorber les efforts latéraux, longitudinaux et de rotation entre la caisse et les longerons et qui constitue une liaison relativement rigide dans le plan vertical.The air intended for the springs is supplied by reservoirs forming part of the bogie so as to eliminate the problem which consists in keeping a constant coincidence between the orifices of the support plates of the body and an orifice in the suspended load-bearing element. The central pivot of the body is connected to a transverse connection system which is not intended to transmit and absorb the lateral, longitudinal and rotational forces between the body and the side members and which constitutes a relatively rigid connection in the vertical plane.

La présente invention a pour but de remédier aux inconvénients des bogies connus. L'invention telle qu'elle est caractérisée par les revendications est relative à un montage d'interconnexion articulé entre le pivot central et des balanciers longitudinaux qui sont montés élastiquement sur des ressorts pneumatiques ou hydrauliques disposés sur les longerons et pourvus de surfaces de support et d'appui pour supporter le poids total de la caisse à l'aplomb des longerons. La paire de balanciers longitudinaux comporte des joints d'étanchéité disposés entre la surface d'appui glissant du châssis de caisse et des orifices dans les balanciers longitudinaux qui fournissent la pression de fluide aux ressorts.The object of the present invention is to remedy the drawbacks of known bogies. The invention as characterized by the claims relates to a hinged interconnection assembly between the central pivot and longitudinal pendulums which are resiliently mounted on pneumatic or hydraulic springs disposed on the side members and provided with support surfaces and support to support the total weight of the body above the side rails. The pair of longitudinal balances has seals disposed between the sliding bearing surface of the body frame and holes in the longitudinal balances which provide fluid pressure to the springs.

Selon l'invention, les balanciers longitudinaux sont interconnectés élastiquement à une pièce d'attelage centrale au moyen de bielles de connexion qui sont articulées suivant un axe horizontal à chaque balancier longitudinal et à la pièce d'attelage centrale pour transmettre et absorber les efforts longitudinaux et latéraux de la caisse aux balanciers longitudinaux.According to the invention, the longitudinal pendulums are elastically interconnected to a central coupling piece by means of connecting rods which are articulated along a horizontal axis to each longitudinal balance and to the central coupling piece to transmit and absorb the longitudinal forces. and sides of the body to the longitudinal pendulums.

Les balanciers longitudinaux assurent le support glissant de la caisse à l'aplomb des longerons et assurent le support d'une partie du poids de la caisse d'attelage centrale et des bielles.The longitudinal pendulums provide the sliding support of the body plumb with the side members and provide the support for part of the weight of the central coupling body and connecting rods.

L'interconnexion articulée entre la pièce d'attelage centrale, les bielles et les balanciers longitudinaux en combinaison avec l'interconnexion élastique entre les bielles et le châssis de bogie permet la transmission et l'absorption des efforts latéraux, longitudinaux et de rotation entre caisse et châssis. La nouvelle interconnexion articulée est particulièrement avantageuse dans les usages de métro express régional et à grande vitesse ou sur voie courbe et si le réservoir de fluide pour actionner les ressorts à fluid est disposé dans la caisse de voiture ou à un endroit éloigné du bogie. Dans ces applications les efforts de rotation exercés entre la caisse et le bogie ont un effet nuisible sur la conservation des joints disposés entre le bogie et la caisse particulièrement dans le cas d'insuffisance de pression d'air aux ressorts pneumatiques.The articulated interconnection between the central coupling piece, the connecting rods and the longitudinal beams in combination with the elastic interconnection between the connecting rods and the bogie chassis allows the transmission and absorption of lateral, longitudinal and rotational forces between the body and chassis. The new articulated interconnection is particularly advantageous in the uses of regional express and high-speed metro or on curved track and if the fluid reservoir for actuating the fluid springs is placed in the car body or at a location remote from the bogie. In these applications the rotational forces exerted between the body and the bogie have a detrimental effect on the conservation of the joints arranged between the bogie and the body, particularly in the case of insufficient air pressure at the air springs.

L'effet bénéfique de l'interconnexion articulée entre la pièce d'attelage centrale et les balanciers longitudinaux sur le dispositif d'étanchéité entre le réservoir d'air ou de fluide et les ressorts pneumatiques ou hydrauliques est augmenté par un nouveau dispositif d'étanchéité destiné aux surfaces de glissement entre le châssis de caisse et la surface de portage du bogie.The beneficial effect of the articulated interconnection between the central coupling piece and the longitudinal balances on the sealing device between the air or fluid reservoir and the pneumatic or hydraulic springs is increased by a new sealing device intended for sliding surfaces between the body chassis and the bogie carrying surface.

L'utilisation des balanciers longitudinaux pour supporter le poids de la caisse de voiture à l'aplomb des châssis latéraux fournit une meilleure répartition des charges et des contacts de surfaces entre le châssis de caisse et les balanciers longitudinaux. Les côtés extérieurs des longerons sont dégagés de manière à permettre l'installation de connecteurs de courant et l'amortisseur vertical peut être disposé au centre du bogie. Le bogie selon l'invention sert à réduire l'effet des efforts longitudinaux, latéraux et de rotation de la caisse sur les joints d'étanchéité ce qui augmente la facilité d'entretien et la durée de vie et fournit des avantages en ce qui concerne le fonctionnement.The use of longitudinal pendulums to support the weight of the car body above the lateral chassis provides a better distribution of loads and surface contact between the chassis of the chassis and the longitudinal balancers. The outer sides of the side members are free to allow the installation of current connectors and the vertical damper can be placed in the center of the bogie. The bogie according to the invention serves to reduce the effect of the longitudinal, lateral and rotational forces of the body on the seals which increases the ease of maintenance and the service life and provides advantages as regards the operation.

L'invention réduit l'entretien et permet une disposition plus efficace des pièces et des organes que dans l'art antérieure. L'invention permet d'entretenir plus facilement les pièces et organes du bogie du fait qu'elle permet de lever la caisse et les bogies sans exiger d'équipement spécial. Le levage de la caisse et du bogie peut être réalisé facilement sans outils spéciaux en levant le bogie par les points de pivot en vue de permettre et faciliter l'inspection et l'entretien du dispositif d'étanchéité. L'interconnexion articulée des balanciers longitudinaux avec les bielles et la pièce d'attelage centrale facilite l'entretien et le remplacement des organes individuels. Le bogie fournit une plus grande élasticité et l'absorption des efforts pour faciliter l'entretien et la durée d'exploitation du bogie. L'invention est particulièrement appropriée aux châssis articulés pour contribuer à la résilience d'ensemble et est avantageusement utilisée dans les réseaux de métro régional à grande vitesse et pour les infrastructures comportant des tronçons de voie courbe et irrégulière.The invention reduces maintenance and allows a more efficient arrangement of parts and organs than in the prior art. The invention makes it easier to maintain the parts and organs of the bogie because it makes it possible to lift the body and the bogies without requiring special equipment. The lifting of the body and the bogie can be carried out easily without special tools by lifting the bogie by the pivot points in order to allow and facilitate the inspection and maintenance of the sealing device. The articulated interconnection of the longitudinal beams with the connecting rods and the central coupling piece facilitates the maintenance and replacement of the individual components. The bogie provides greater elasticity and absorption of forces to facilitate maintenance and the operating life of the bogie. The invention is particularly suitable for articulated chassis to contribute to overall resilience and is advantageously used in regional high-speed metro networks and for infrastructures comprising sections of curved and irregular track.

Conformément à l'invention, le bogie comporte des longerons sur lesquels sont montés des ressorts à fluide supportant la caisse et il est caractérisé par le fait qu'il comporte une paire de balanciers longitudinaux montés sur lesdits ressorts et destinés à supporter le poids de la caisse et une paire de bielles de connexion articulées chacune à undit balancier et à une pièce d'attelage centrale pourvue de moyens pour le pivotement relatif de la caisse et du bogie.According to the invention, the bogie has longitudinal members on which are mounted fluid springs supporting the body and it is characterized in that it comprises a pair of longitudinal pendulums mounted on said springs and intended to support the weight of the body and a pair of connecting rods each articulated with a balance and a central coupling piece provided with means for the relative pivoting of the body and the bogie.

Selon une caractéristique de l'invention chaque bielle de connexion est reliée aux longerons par une bielle d'attache.According to a characteristic of the invention, each connecting rod is connected to the side members by an attachment rod.

Selon une autre caractéristique, le bogie comporte un amortisseur transversal monté entre ladite pièce d'attelage centrale et lesdits longerons.According to another characteristic, the bogie comprises a transverse damper mounted between said central coupling piece and said longitudinal members.

D'autres caractéristiques et avantages de l'invention découleront de la description détaillée suivante qui se réfère aux dessins annexés dans lesquels:

  • La figure 1 est une vue de dessus du bogie et du système de suspension selon l'invention.
  • La figure 2 est une vue de côté du bogie de la figure 1 et de la caisse de voiture en traits mixtes.
  • La figure 3 est une vue transversale partiellement en coupe dans laquelle la caisse de voiture est en traits mixtes.
  • La figure 4 est une vue de dessus d'une partie du bogie qui illustre les liaisons de la pièce d'attelage centrale aux balanciers longitudinaux supportant l'ossature de la caisse de voiture.
  • La figure 5 est une vue en coupe selon la ligne 5-5 de la figure 4.
  • La figure 6 est une vue en coupe, selon la ligne 6-6 de la figure 5 montrant une bielle de retenue.
  • La figure 7 est une vue éclatée en perspective du demi-assemblage droit entre la pièce d'attelage centrale et un balancier longitudinal.
  • La figure 8 est une vue de côté, avec une coupe partielle, de l'assemblage du pivot central de la caisse à un longeron du bogie selon l'invention.
  • La figure 9 est une vue de côté partiellement en coupe montrant un nouveau joint à l'usage du bogie selon l'invention.
  • La figure 10 est une vue schématique montrant la suspension des balanciers longitudinaux qui supportent la caisse de voiture.
  • La figure 11 est une vue de dessus illustrant l'application des efforts de rotation de la caisse de voiture au châssis de bogie.
  • La figure 12 est une vue de dessus illustrant un mode de réalisation complémentaire du bogie selon l'invention utilisant un seul ressort à fluide sur chaque longeron.
  • La figure 13 est une vue partielle de côté du bogie de la figure 12.
  • La figure 14 est une vue en coupe selon la ligne 14-14 de la figure 12.
Other characteristics and advantages of the invention will emerge from the following detailed description which refers to the accompanying drawings in which:
  • Figure 1 is a top view of the bogie and the suspension system according to the invention.
  • Figure 2 is a side view of the bogie of Figure 1 and the car body in phantom.
  • Figure 3 is a partially sectional cross-sectional view in which the car body is in phantom.
  • Figure 4 is a top view of a part of the bogie which illustrates the connections of the central coupling part to the longitudinal beams supporting the framework of the car body.
  • Figure 5 is a sectional view along line 5-5 of Figure 4.
  • Figure 6 is a sectional view along line 6-6 of Figure 5 showing a retaining rod.
  • Figure 7 is an exploded perspective view of the right half-assembly between the central coupling piece and a longitudinal balance.
  • Figure 8 is a side view, with a partial section, of the assembly of the central pivot of the body to a beam of the bogie according to the invention.
  • Figure 9 is a side view partially in section showing a new seal for the use of the bogie according to the invention.
  • Figure 10 is a schematic view showing the suspension of the longitudinal rockers which support the car body.
  • Figure 11 is a top view illustrating the application of the forces of rotation of the car body to the bogie chassis.
  • Figure 12 is a top view illustrating a complementary embodiment of the bogie according to the invention using a single fluid spring on each beam.
  • FIG. 13 is a partial side view of the bogie of FIG. 12.
  • FIG. 14 is a sectional view along line 14-14 of FIG. 12.

Le bogie selon un mode de réalisation est illustré dans les figures 1 à 3 dans lesquelles le bogie 20 comporte un châssis de bogie 22 possédant deux longerons longitudinaux 24 et 26 sur lesquels sont montées, rotativement, quatre roues par l'intermédiaire des essieux 30 et 32. Chaque boîte d'essieu est emprisonnée à l'extrémité d'un longeron avec interposition d'un manchon élastique permettant une légère déformation. Le bogie 20 dans son mode de réalisation préférentiel est un bogie moteur tel que ceux utilisés dans les réseaux de métro express régional à grande vitesse et il comporte des moteurs d'entraînement 34 et 36. Les longerons 24 et 26 comprennent de préférence des traverses 38 et 40 respectivement qui sont accouplées par des montages à paliers 42 et 44 qui de préférences permettent le pivotement relatif entre les longerons 24 et 26 et permettent aux roues de rester en contact avec des tronçons de voie irréguliers. Le principe du bogie articulé est connu en soi et ne sera pas décrit plus amplement. Les organes du bogie articulé coopèrent avec les éléments du présent bogie pour communiquer une plus grande élasticité à la combinaison d'ensemble.The bogie according to one embodiment is illustrated in FIGS. 1 to 3 in which the bogie 20 comprises a bogie frame 22 having two longitudinal beams 24 and 26 on which four wheels are rotatably mounted by means of the axles 30 and 32. Each axle box is trapped at the end of a beam with the interposition of an elastic sleeve allowing slight deformation. The bogie 20 in its preferred embodiment is a motor bogie such as those used in the regional high-speed express metro networks and it includes drive motors 34 and 36. The side members 24 and 26 preferably comprise cross members 38 and 40 respectively which are coupled by bearings 42 and 44 which preferably allow pivoting relative between the side members 24 and 26 and allow the wheels to remain in contact with irregular track sections. The principle of the articulated bogie is known per se and will not be described more fully. The organs of the articulated bogie cooperate with the elements of this bogie to impart greater elasticity to the overall combination.

Les bogies 20 selon l'invention supportent le poids total de la caisse de voiture 46 à l'aplomb des longerons 24 et 26. L'effort vertical total ou la charge exercée par la caisse 46 est élastiquement supportée à l'aplomb des longerons 24 et 26 par des ressorts pneumatiques ou hydrauliques 48 du type coussins. Selon le mode de réalisation préférentiel de l'invention, deux ressorts pneumatiques 48 sont disposés sur chaque longeron 24 ou 26. Une paire de balanciers longitudinaux 50 et 52 accouplent longitudinalement les ressorts pneumatiques 48 sur chacun des longerons 24 et 26. Les balanciers longitudinaux 50 et 52 sont éudiés pour occuper et fermer les dessus 54 (figure 3) des ressorts pneumatiques 48 et ils sont pourvus d'orifices 56 pour l'alimentation en pression d'air ou de fluide des ressorts pneumatiques 48. L'extrémité inférieure de chacun des ressorts pneumatiques est fermée par une plaque 58 disposée sur un longeron. Les extrémités supérieures des ressorts pneumatiques sont jointes avec étanchéité aux balanciers longitudinaux pour conserver la pression d'air fournie aux orifices 56 des balanciers longitudinaux 50 et 52.The bogies 20 according to the invention support the total weight of the car body 46 plumb with the side members 24 and 26. The total vertical force or the load exerted by the body 46 is resiliently supported plumb with the side members 24 and 26 by pneumatic or hydraulic springs 48 of the cushion type. According to the preferred embodiment of the invention, two pneumatic springs 48 are arranged on each beam 24 or 26. A pair of longitudinal beams 50 and 52 longitudinally couple the pneumatic springs 48 on each of the beams 24 and 26. Longitudinal beams 50 and 52 are designed to occupy and close the tops 54 (FIG. 3) of the air springs 48 and they are provided with orifices 56 for supplying air or fluid pressure to the air springs 48. The lower end of each pneumatic springs is closed by a plate 58 disposed on a beam. The upper ends of the air springs are tightly joined to the longitudinal pendulums in order to conserve the air pressure supplied to the orifices 56 of the longitudinal balancers 50 and 52.

Les balanciers longitudinaux 50 et 52 en combinaison avec les ressorts pneumatiques 48 supportent le poids de la caisse, en appui sur les châssis 60 et 62 de la caisse 46, à l'aplomb avec les longerons 24 et 26. La pression d'air est fournie à partir de deux réservoirs 64 et 66 disposés sur la caisse de voiture 46 et connectés par des conduits 68 et 70 aux orifices 56 dans les balanciers longitudinaux de manière à fournir un support élastique du poids de la caisse appliqué à chacun des balanciers longitudinaux 50 et 52. Le bogie supporte la charge ou l'effort vertical exercé par la caisse de voiture 46 à l'aplomb des longerons. Dans chaque bogie 20 la charge sur les longerons 24 et 26 constitue la charge ou l'èffort vertical total exercé par la caisse sur chacun des balanciers longitudinaux 50 et 52 en association avec les ressorts pneumatiques 48. Le poids de la caisse est supporté en partie par les balanciers longitudinaux 50 et 52 et est notée F2 sur la figure 10 et la partie restante du poids de la caisse 46 est directement supportée par la pression d'air fournie au ressort pneumatique 48 et est notée F1 sur la figure 10.The longitudinal pendulums 50 and 52 in combination with the pneumatic springs 48 support the weight of the body, bearing on the chassis 60 and 62 of the body 46, plumb with the side members 24 and 26. The air pressure is supplied from two tanks 64 and 66 arranged on the car body 46 and connected by conduits 68 and 70 to the orifices 56 in the longitudinal beams so as to provide an elastic support for the weight of the body applied to each of the longitudinal beams 50 and 52. The bogie supports the load or the vertical force exerted by the car body 46 plumb with the side members. In each bogie 20 the load on the longitudinal members 24 and 26 constitutes the total vertical load or effort exerted by the body on each of the longitudinal pendulums 50 and 52 in association with the pneumatic springs 48. The weight of the body is partially supported by the longitudinal pendulums 50 and 52 and is denoted F2 in FIG. 10 and the remaining part of the weight of the body 46 is directly supported by the air pressure supplied to the pneumatic spring 48 and is denoted F1 in FIG. 10.

Les efforts verticaux sur les joints 72 conjointement avec les efforts de rotation agissant sur les joints 72 pendant la rotation de la voiture quand elle parcourt les tronçons courbes de voie est directement imputable aux forces de glissement exercées sur le joint et aux efforts longitudinaux et latéraux entre le bogie et la caisse. Ces efforts sont réduits si une liaison articulée existe entre le pivot central et le système de suspension à air disposé sur les châssis latéraux 24 et 26 du bogie. Le joint 72 connu (figure 10) supporte une forte charge et dans le cas d'insuffisance de pression d'air porte la charge totale de la caisse. Le manque de protection des joints les soumet à l'usure et à la fatigue particulièrement en cas d'insuffisance de pression d'air.The vertical forces on the joints 72 in conjunction with the rotational forces acting on the joints 72 during the rotation of the car when it travels the curved sections of track is directly attributable to the sliding forces exerted on the joint and to the longitudinal and lateral forces between the bogie and the body. These efforts are reduced if an articulated connection exists between the central pivot and the air suspension system arranged on the lateral frames 24 and 26 of the bogie. The known joint 72 (FIG. 10) supports a heavy load and in the case of insufficient air pressure carries the total load of the box. The lack of protection of the seals subjects them to wear and fatigue, particularly in the event of insufficient air pressure.

La réduction des efforts de rotation et le déplacement angulaire de la caisse par rapport aux joints de fluide des ressorts pneumatiques disposés au-dessus des longerons augmente la durée de vie des joints. Selon un mode de réalisation complémentaire de l'invention une nouvelle configuration du joint sera décrite ci-après avec l'utilisation des interconnexions élastiques et pivotantes entre le pivot central de la caisse et le système de suspension disposé sur les longerons pour réduire la fatigue du joint, pour augmenter la durée de vie du joint et fournir des avantages qui concernent l'entretien et le fonctionnement des bogies.The reduction in rotational forces and the angular displacement of the body relative to the fluid seals of the air springs disposed above the side members increases the life of the seals. According to a complementary embodiment of the invention a new configuration of the joint will be described below with the use of elastic and pivoting interconnections between the central pivot of the body and the suspension system arranged on the side members to reduce the fatigue of the seal, to increase the life of the seal and provide benefits that relate to the maintenance and operation of the bogies.

L'effort vertical de la voiture ou la charge exercée par la caisse est supportée à l'aplomb des longerons par l'intermédiaire des balanciers longitudinaux 50 et 52. L'interconnexion articulée et élastique entre la caisse 46 et le bogie 20 est mieux illustrée par les figures 3 et dans lesquelles un pivot central 76 est disposé à peu près au centre de l'entretoise transversale 77 de la caisse 46. Une pièce d'attelage centrale 78 est prévue pour recevoir de manière pivotante le pivot 76 qui est immobilisé par une plaque 80 fixée par des boulons 82. Cette pièce d'attelage 78 présente une bague 781 formant un logement dans lequel est engagé le pivot 76. La pièce d'attelage centrale 78 comprend de préférence une monture de palier 84 (figure 1) pour atteler un amortisseur transversal 86 qui est lié à une console 87 montée sur la traverse 38 (figure 3).The vertical force of the car or the load exerted by the body is supported plumb with the side members by means of the longitudinal pendulums 50 and 52. The articulated and elastic interconnection between the body 46 and the bogie 20 is better illustrated by FIGS. 3 and in which a central pivot 76 is disposed approximately at the center of the transverse spacer 77 of the body 46. A central coupling piece 78 is provided for pivotally receiving the pivot 76 which is immobilized by a plate 80 fixed by bolts 82. This coupling piece 78 has a ring 781 forming a housing in which the pivot 76 is engaged. The central coupling piece 78 preferably comprises a bearing mount 84 (FIG. 1) for harness a transverse damper 86 which is linked to a console 87 mounted on the cross-member 38 (FIG. 3).

La fonction de l'ensemble de palier et l'amortisseur 86 est de faciliter l'amortissement des efforts latéraux entre le pivot central 76 de la caisse et le bogie 20. L'action des efforts de rotation sur les joints est illustrée schématiquement dans la figure 11. Les amplitudes des efforts sont diminuées de manière significative en raison des nombreuses articulations pivotantes et élastiques entre la pièce d'attelage centrale et les balanciers longitudinaux comme cela sera décrit un détail ci-dessous. La pièce d'attelage centrale 78 ne supporte pas le poids de la caisse mais au contraire sert principalement à l'interconnexion du pivot central 76 de la caisse avec le bogie 20 pour participer à la transmission des efforts longitudinaux et latéraux qui résultent du fonctionnement du bogie 20 pendant le mouvement de la caisse 46.The function of the bearing assembly and the shock absorber 86 is to facilitate the damping of the lateral forces between the central pivot 76 of the body and the bogie 20. The action of the rotational forces on the seals is illustrated diagrammatically in the figure 11. The amplitudes of the efforts are significantly reduced due to the numerous pivoting and elastic joints between the central coupling part and the longitudinal pendulums as will be described in detail below. The central coupling piece 78 does not support the weight of the body but on the contrary is mainly used for the interconnection of the central pivot 76 of the body with the bogie 20 to participate in the transmission of the longitudinal and lateral forces which result from the operation of the bogie 20 during the movement of the body 46.

En se référant maintenant aux figures 1, 3-8, l'interconnexion élastique entre la pièce d'attelage centrale 78 et les balanciers longitudinaux 50 et 52 sera décrite plus en détail. La pièce d'attelage centrale 78 comporte des montages de paliers 88 et 90 ayant des axes 92 et 94 respectivement pour le couplage articulé et pivotant avec des bielles de connexion 96 et 98. Les bielles 96 et 98 sont liées de manière articulée par les paliers 100 et 102 aux balanciers longitudinaux 52 et 50 respectivement. Un axe 104 peut être prévu dans les paliers 100 et 102 pour être monté dans une console ou montage 106 des balanciers longitudinaux 50 et 52 de manière à permettre la liaison articulée et élastique des bielles 96 et 98 aux balanciers longitudinaux 50 et 52.Referring now to Figures 1, 3-8, the elastic interconnection between the central coupling piece 78 and the longitudinal beams 50 and 52 will be described in more detail. The central coupling piece 78 includes bearing assemblies 88 and 90 having axes 92 and 94 respectively for the articulated and pivoting coupling with connecting rods 96 and 98. The connecting rods 96 and 98 are linked in an articulated manner by the bearings 100 and 102 to the longitudinal pendulums 52 and 50 respectively. An axis 104 can be provided in the bearings 100 and 102 to be mounted in a console or mounting 106 of the longitudinal rockers 50 and 52 so as to allow the articulated and elastic connection of the connecting rods 96 and 98 to the longitudinal rockers 50 and 52.

Le poids de la pièce de couplage centrale 78 et des bielles 96 et 98 est supporté en partie par les balanciers longitudinaux 50 et 52 et en partie par l'interconnexion élastique des bielles 96 et 98 aux traverses 38 et 40 par l'intermédiaire des paliers 108 et 110 respectivement. Les bielles 96 et 98 emploient chacune un bras 113 s'étendant vers le bas et présentant un support pour recevoir les paliers 108 et 110 des bielles d'attache 116 et 118 qui s'étendent longitudinalement et sont articulées aux traverses 38 et 40 respectivement de manière à assurer l'entraînement longitudinal.The weight of the central coupling piece 78 and the connecting rods 96 and 98 is supported in part by the longitudinal pendulums 50 and 52 and in part by the elastic interconnection of the connecting rods 96 and 98 to the crosspieces 38 and 40 via the bearings 108 and 110 respectively. The connecting rods 96 and 98 each employ an arm 113 extending downward and having a support for receiving the bearings 108 and 110 of the connecting rods 116 and 118 which extend longitudinally and are articulated at the crosspieces 38 and 40 respectively. so as to provide longitudinal drive.

La bielle d'attache 116 comporte un palier 110 à une extrémité pour l'articulation à la bielle 98 et à l'autre extrémité comporte un palier 120 pour le montage à la traverse 40. En variante, la bielle d'attache 116 pourrait être articulée aux longerons 26 du bogie.The connecting rod 116 comprises a bearing 110 at one end for the articulation to the connecting rod 98 and at the other end comprises a bearing 120 for mounting to the crosspiece 40. As a variant, the connecting rod 116 could be articulated to the side members 26 of the bogie.

La bielle d'attache 118 est articulée de manière similaire à la traverse 38 du bogie 20 ou peut être articulée directement aux longerons 24 de la même manière que la bielle 116. Les montages à consoles 122 peuvent être utilisés sur les traverses 38 et 40 pour le montage articulé des bielles d'attache 118 et 116 respectivement. Du côté des articulations 108 et 110, peuvent être prévues des butées 124 sur les bielles d'attache 116 et 118 pour limiter le mouvement de rotation desdites bielles et pour lever la charge du bogie lié à la caisse 46. Un butoir correspondant 126 peut être utilisé pour former la seconde partie de l'élément d'arrêt et peut être disposé sur les traverses afin de faciliter le levage du bogie 20.The connecting rod 118 is articulated similarly to the cross member 38 of the bogie 20 or can be articulated directly to the side members 24 in the same manner as the connecting rod 116. The mounting brackets 122 can be used on the cross members 38 and 40 for the articulated mounting of the connecting rods 118 and 116 respectively. On the side of the joints 108 and 110, stops 124 can be provided on the connecting rods 116 and 118 to limit the rotational movement of said connecting rods and to lift the load of the bogie linked to the body 46. A corresponding stop 126 can be used to form the second part of the stop element and can be placed on the crosspieces to facilitate the lifting of the bogie 20.

L'interconnexion élastique et articulée entre le pivot 76 de la caisse et les balanciers longitudinaux 50 et 52 du bogie en combinaison avec l'agencement des composants et leurs liaisons articulées à la traverse ou à une partie du châssis de bogie 20 facilite la dissipation et la transmission des efforts latéraux longitudinaux et de rotation entre la caisse et le bogie. La dissipation et la transmission de ces efforts fournit des avantages dans le fonctionnement du bogie et augmente la durée de vie des joints entre les balanciers longitudinaux et la caisse contenant les réservoirs 64 et 66 qui fournissent la pression de fluide aux ressorts pneumatiques 48. Pendant le fonctionnement, le bogie permet la transmission et l'absorption des efforts de rotation, latéraux et longitudinaux entre le bogie 20 et la caisse 46 non seulement par les articulations formées par les axes et les paliers 88, 90, 92, 94, 100, 102 et 108, 110 et 120 mais aussi par les liaisons comprenant la longueur des bras des bielles 96 et 98 et leur articulation aux balanciers longitudinaux 50 et 52 et la longueur des bras 112 aux traverses 38 et 40 du bogie 20.The elastic and articulated interconnection between the pivot 76 of the body and the longitudinal beams 50 and 52 of the bogie in combination with the arrangement of the components and their articulated connections to the cross member or to a part of the bogie frame 20 facilitates the dissipation and the transmission of longitudinal lateral and rotational forces between the body and the bogie. The dissipation and transmission of these forces provides advantages in the operation of the bogie and increases the service life of the joints between the longitudinal pendulums and the body containing the tanks 64 and 66 which supply the fluid pressure to the air springs 48. During the operation, the bogie allows the transmission and absorption of the rotational forces, lateral and longitudinal between the bogie 20 and the body 46 not only by the articulations formed by the axes and the bearings 88, 90, 92, 94, 100, 102 and 108, 110 and 120 but also by the connections comprising the length of the arms of the connecting rods 96 and 98 and their articulation to the longitudinal pendulums 50 and 52 and the length of the arms 112 to the crosspieces 38 and 40 of the bogie 20.

Les articulations 88 et 90 entre la pièce d'attelage centrale et les bielles de connexion et les articulations 100 et 102 entre les bielles de connexion et les balanciers longitudinaux assurent chacune l'articulation autour d'un axe sensiblement horizontal et longitudinal avec de préférence une élasticité en rotation (ou torsion), conique, axiale et radiale. Chaque articulation comporte un axe cylindrique longitudinal entouré dans un manchon élastique en élastomère engagé dans un logement d'une première pièce articulée, les extrémités de l'axe étant fixées dans la seconde pièce articulée. Chaque articulation assure une liaison axiale avec de préférence une certaine élasticité entre les pièces. A cet effet des butées axiales élastiques 89, 91, 101, 103 sont prévues sur chaque extrémité des articulations pour obtenir une élasticité dans le sens longitudinal tout en transmettant les efforts longitudinaux. Le pivot de caisse est seulement relié à la pièce d'attelage centrale.The joints 88 and 90 between the central coupling piece and the connecting rods and the joints 100 and 102 between the connecting rods and the longitudinal balances each ensure articulation around a substantially horizontal and longitudinal axis with preferably a elasticity in rotation (or torsion), conical, axial and radial. Each articulation has a longitudinal cylindrical axis surrounded in an elastic elastomer sleeve engaged in a housing of a first articulated part, the ends of the axis being fixed in the second articulated part. Each joint ensures an axial connection with preferably a certain elasticity between the parts. For this purpose elastic axial stops 89, 91, 101, 103 are provided on each end of the articulations to obtain elasticity in the longitudinal direction while transmitting the longitudinal forces. The body pivot is only connected to the central coupling piece.

Le support de la caisse 46 par les bogies selon l'invention permet la transmission et la dissipation des efforts de rotation, latéraux et longitudinaux de manière à éliminer la traverse de charge et permettre le support total de la caisse à l'aplomb des longerons avec la transmission et l'absorption des efforts qui sinon seraient néfastes aux joints entre la caisse et les longerons supportant le système de suspension. Cet agencement permet l'utilisation efficace de l'espace et des organes et l'élimination d'organes prescrits jusqu'ici dans l'art antérieur. L'impact de l'effort sur les balanciers longitudinaux peut être dissipé par une paire d'amortisseurs 130 et 132 disposés à l'extérieur des balanciers longitudinaux pour faciliter l'amortissement des efforts verticaux entre la caisse 46 et le bogie 20. Ces amortisseurs 130 et 132 peuvent être reliés à une extrémité par une attache 134 aux balanciers longitudinaux 50 et 52 et à l'autre extrémité 136 aux longerons 24, 26 respectivement.The support of the body 46 by the bogies according to the invention allows the transmission and the dissipation of the rotation forces, lateral and longitudinal so as to eliminate the load cross member and allow the total support of the body to be plumb with the side members with the transmission and absorption of forces which would otherwise be harmful to the joints between the body and the side members supporting the suspension system. This arrangement allows the efficient use of space and organs and the elimination of organs hitherto prescribed in the prior art. The impact of the force on the longitudinal balances can be dissipated by a pair of shock absorbers 130 and 132 arranged outside the longitudinal balances to facilitate the damping of the vertical forces between the body 46 and the bogie 20. These shock absorbers 130 and 132 can be connected at one end by an attachment 134 to the longitudinal beams 50 and 52 and at the other end 136 to the side members 24, 26 respectively.

La caisse de voiture 46 est supportée à l'aplomb des longerons par l'intermédiaire des balanciers longitudinaux 50, 52. Ces balanciers longitudinaux fournissent des avantages en permettant un meilleur appui entre les longerons 60 et 62 de la caisse 46 et chacun des balanciers longitudinaux 50 et 52. Les balanciers longitudinaux opèrent avec un joint à glissement entre les châssis 60 et 62 de la caisse et les balanciers longitudinaux. On peut utiliser un joint connu (figure 3) comprenant une cale de réglage 140, une plaque de frottement en téflon 142, un joint en élastomère ou en caoutchouc 72 comme illustré dans la figure 10 et une plaque de protection 144. Ces joints standards peuvent être utilisés selon l'invention pour obtenir des avantages dans le fonctionnement du nouveau bogie.The car body 46 is supported plumb with the side members by means of the longitudinal beams 50, 52. These longitudinal beams provide advantages by allowing better support between the beams 60 and 62 of the body 46 and each of the longitudinal beams 50 and 52. The longitudinal balances operate with a sliding joint between the chassis 60 and 62 of the body and the longitudinal balances. A known seal can be used (FIG. 3) comprising an adjustment shim 140, a Teflon friction plate 142, an elastomer or rubber seal 72 as illustrated in FIG. 10 and a protective plate 144. These standard seals can be used according to the invention to obtain advantages in the operation of the new bogie.

Dans le mode de réalisation préfère de l'invention, un nouveau joint illustré par la figure 9 peut être utilisé pour améliorer la stabilité, la conservation et la durée de vie du joint. Dans ce mode de réalisation, un conduit 70 fournit la pression de fluide ou d'air à partir d'un réservoir logé dans la caisse tel que 66 aux ressorts pneumatiques 48 supportés par les longerons 24 et 26. Le conduit 70 d'alimentation en air comporte un embout de raccordement 150 et une cale de réglage 152 interposée entre le châssis de caisse et une plaque de frottement 154 qui glisse sur un patin de glissement, en acier inoxydable, de forme ovale ou annulaire. Le patin de glissement en acier inoxydable 156 comporte un évidement pour recevoir un joint 158 en élastomère ou caoutchouc au-dessus duquel la plaque de frottement en téflon 154 glisse par rapport à la plaque en acier inoxydable 156.In the preferred embodiment of the invention, a new seal illustrated in Figure 9 can be used to improve the stability, preservation and life of the seal. In this embodiment, a conduit 70 supplies the fluid or air pressure from a reservoir housed in the body such as 66 with pneumatic springs 48 supported by the side members 24 and 26. The air supply duct 70 has a connection end piece 150 and an adjustment shim 152 interposed between the body frame and a friction plate 154 which slides on a sliding shoe, stainless steel, oval or annular. The stainless steel sliding pad 156 has a recess for receiving an elastomer or rubber seal 158 above which the teflon friction plate 154 slides relative to the stainless steel plate 156.

On voit que la surface augmentée fournie par le nouveau joint en combinaison avec l'agencement d'un joint en caoutchouc ou en élastomère à l'intérieur du patin ou de la plaque fournit des avantages de stabilisation du balancier longitudinal par rapport à la caisse et accroît la durée de vie. L'évidement assure le logement et la protection du joint d'élastomère ou de caoutchouc non seulement en fonctionnement normal mais aussi en cas d'insuffisance de pression d'air. Dans ces conditions le poids total de la caisse ne porte pas sur le joint en caoutchouc ou en élastomère mais est au contraire transmis par l'appui fourni par la combinaison des plaques de métal et de frottement.It can be seen that the increased surface provided by the new seal in combination with the arrangement of a rubber or elastomer seal inside the pad or the plate provides advantages in stabilizing the longitudinal balance relative to the body and increases the service life. The recess provides housing and protection for the elastomer or rubber seal not only during normal operation but also in the event of insufficient air pressure. Under these conditions the total weight of the body does not bear on the rubber or elastomer seal but is on the contrary transmitted by the support provided by the combination of metal plates and friction.

La pression d'air fournie par le conduit 70 est envoyée par l'orifice 56 dans le balancier longitudinal 52 au ressort pneumatique 48. Un joint racleur 160 est monté autour de la plaque 154 de manière à glisser entre la plaque de téflon 154 et le patin de glissement en acier inoxydable 156 et le joint 158 pour éviter que la poussière et les matières étrangères contrarient la conservation du joint dans le mouvement de rotation du bogie dans les courbes. On voit que le contact glissant entre la plaque de frottement 154 en téflon et le patin de glissement en acier inoxydable 156 et le joint 158 supportent la charge indirecte exercée par la caisse sur les longerons ainsi que la pression notée F2 et la charge directe de la caisse notée F1 qui est directement supportée par le dispositif de suspension à air.The air pressure supplied by the duct 70 is sent through the orifice 56 in the longitudinal balance 52 to the pneumatic spring 48. A scraper seal 160 is mounted around the plate 154 so as to slide between the teflon plate 154 and the sliding shoe in stainless steel 156 and the seal 158 to prevent dust and foreign matter from interfering with the conservation of the seal in the rotational movement of the bogie in curves. We see that the sliding contact between the friction plate 154 in Teflon and the sliding shoe in stainless steel 156 and the seal 158 support the indirect load exerted by the body on the side members as well as the pressure noted F2 and the direct load of the body marked F1 which is directly supported by the air suspension device.

Les avantages de l'invention peuvent aussi être utilisés dans des modes de réalisation utilisant un seul moyen de support élastique tel qu'un ressort pneumatique 48 sur chaque longeron 24 et 26 du bogie 180 comme cela est illustré par les figures 12 et 13. Le bogie 180 illustré par les figures 12 et 13 utilise deux longerons 24 et 26 possédant des traverses 38 et 40 et des organes similaires au bogie 20 décrit ci-dessus. Les organes qui ont les mêmes fonctions que ceux décrits ci-dessus ont les mêmes références et la description se limitera aux organes qui ont été modifiés.The advantages of the invention can also be used in embodiments using a single elastic support means such as an air spring 48 on each beam 24 and 26 of the bogie 180 as illustrated by FIGS. 12 and 13. The bogie 180 illustrated in FIGS. 12 and 13 uses two beams 24 and 26 having cross members 38 and 40 and members similar to the bogie 20 described above. The organs which have the same functions as those described above have the same references and the description will be limited to the organs which have been modified.

L'application de la présente invention à un seul ressort pneumatique 48 utilise un balancier longitudinal modifié possédant un seul orifice 56 pour fournir la pression d'air au ressort pneumatique 48 de la manière décrite ci-dessus. L'orifice 56 peut employer un joint connu ou un nouveau joint conforme au mode de réalisation qui a été décrit ci-dessus. Les balanciers longitudinaux 182 disposés sur un seul ressort pneumatique sur chaque longeron 24 et 26 supportent le poids total de la caisse à l'aplomb des longerons 24 et 26 comme dans le mode de réalisation employant deux ressort pneumatiques.The application of the present invention to a single air spring 48 uses a modified longitudinal balance having a single port 56 to provide air pressure to the air spring 48 as described above. The orifice 56 can use a known seal or a new seal according to the embodiment which has been described above. The longitudinal pendulums 182 disposed on a single pneumatic spring on each spar 24 and 26 support the total weight of the body directly above the spars 24 and 26 as in the embodiment employing two pneumatic springs.

Les balanciers longitudinaux 182 sont disposés à l'aplomb des ressorts pneumatiques 48 et sont chacun interconnectés de manière élastique et articulée aux bielles 96 et 98 comme décrit ci-dessus en utilisant des bielles d'attache 116 et 118 et des bras s'étendant vers le bas 112 pour faciliter la transmission et l'absorption des efforts de rotation, latéraux et longitudinaux entre le pivot de la caisse et son interconnection élastique et articulée avec les longerons 24 et 26 par l'intermédiaire des balanciers longitudinaux 182. De la même manière le couplage articulé par bielles d'attelage entre les bielles de connexion et les traverses peut être utilisé pour porter une partie de la charge directement par les traverses 38 et 40 de la manière décrite ci-dessus.The longitudinal pendulums 182 are positioned directly above the pneumatic springs 48 and are each interconnected in an elastic manner and articulated to the connecting rods 96 and 98 as described above using connecting rods 116 and 118 and arms extending towards the bottom 112 to facilitate the transmission and absorption of the rotational, lateral and longitudinal forces between the body pivot and its elastic and articulated interconnection with the side members 24 and 26 by means of the longitudinal pendulums 182. In the same way the articulated coupling by coupling rods between the connecting rods and the crosspieces can be used to carry part of the load directly by the crosspieces 38 and 40 in the manner described above.

Le poids de la caisse est en partie directement supporté par le système de suspension à air à l'aplomb des longerons tandis que la partie restante du poids de la caisse est indirectement supporté par les balanciers longitudinaux. Les balanciers longitudinaux ont une configuration légèrement différente et présentent des tampons 186 pour limiter leur mouvement vers le bas par rapport aux longerons et pour supporter toute la charge de la caisse 146 directement sur les longerons 24 et 26 dans le cas d'une insuffisance de pression du fluide hydraulique ou pneumatique nécessaire pour gonfler les soufflets des ressorts 48.The weight of the body is partly directly supported by the air suspension system directly above the side members while the remaining part of the weight of the body is indirectly supported by the longitudinal pendulums. The longitudinal pendulums have a slightly different configuration and have buffers 186 to limit their downward movement relative to the side members and to support the entire load of the body 146 directly on the side members 24 and 26 in the event of insufficient pressure. of the hydraulic or pneumatic fluid necessary to inflate the bellows of the springs 48.

La pièce d'attelage centrale 188 est similaire à la pièce d'attelage 78 décrite ci-dessus et comprend un montage à palier 84 et un amortisseur 86 pour l'attacher au longeron 24 du bogie 180. La pièce d'attelage modifiée 188 comporte un logement conique 190 illustré dans la figure 14 et destiné à recevoir un pivot modifié de forme conique 192 du châssis de la caisse 77 pour faciliter la stabilité en rotation de la pièce d'attelage centrale 188 autour de ses axes de rotation longitudinal et latéral. Cette stabilité en rotation est obtenue en allongeant le pivot 192 de la caisse 77 et en prévoyant, en haut de la pièce d'attelage centrale 188, un palier fermé 194 et, à l'extrémité inférieure du pivot 192, un second palier fermé 196. Le pivot 192 est assujetti verticalement dans la pièce d'attelage centrale 188 au moyen d'une plaque d'appui 198 qui est fixée au pivot par des boulons 200.The central coupling piece 188 is similar to the coupling piece 78 described above and comprises a bearing assembly 84 and a shock absorber 86 for attaching it to the spar 24 of the bogie 180. The modified coupling piece 188 comprises a conical housing 190 illustrated in FIG. 14 and intended to receive a modified conical pivot 192 of the chassis of the body 77 to facilitate the rotational stability of the central coupling piece 188 around its axes of longitudinal and lateral rotation. This rotational stability is obtained by lengthening the pivot 192 of the body 77 and by providing, at the top of the central coupling piece 188, a closed bearing 194 and, at the lower end of the pivot 192, a second closed bearing 196 The pivot 192 is fixed vertically in the central coupling piece 188 by means of a support plate 198 which is fixed to the pivot by bolts 200.

Le bogie selon l'invention peut être modifié en ce qui concerne les couplages, les pivots, les dispositifs d'étanchéité et articulations du système de suspension pour augmenter encore plus les avantages de l'interconnexion élastique entre une pièce d'attelage centrale et un système de support élastique utilisant des balanciers longitudinaux au-dessus d'un ou plusieurs ressorts pneumatiques.The bogie according to the invention can be modified as regards the couplings, the pivots, the sealing devices and the articulations of the suspension system to further increase the advantages of the elastic interconnection between a central coupling piece and a elastic support system using longitudinal pendulums above one or more pneumatic springs.

Claims (13)

1. A railway bogie of the type without dancing cross-beam for elastically supporting a car carriage (46), comprising a pair of side-members (24, 26) which extend laterally and are mounted on axles (30, 32), fluid springs (48) mounted on said side-members, a pair of longitudinal beams (50, 52,182) mounted on said springs and conceived to support the weight of the carriage perpendicularly to the said side-members, and a pair of connection rods (96, 98) each one articulated at one of said beams, characterized in that said rods (96, 98) comprise articulations of a horizontal axis and that it further comprises a central coupling piece (78, 188) articulated at said pair of rods (96, 98) and provided with means (76, 192) for allowing a relative pivoting of the carriage and the bogie.
2. A bogie according to claim 1, characterized in that it comprises a pair of fluid springs (48) on each side-member (24, 26), and that each longitudinal beam (50, 52) serves to longitudinally couple said pair of springs.
3. A bogie according to any one of the preceding claims, characterized in that the side-members (24, 26) possess cross-beams (38, 40) which have bearing assemblies (42, 44) for ensuring the relative pivoting of said side-members.
4. A bogie according to any one of the preceding claims, characterized in that each rod (96, 98) is articulated at the side-member (24, 26) by an attachment rod (116, 118).
5. A bogie according to any one of the preceding claims, characterized in that each connection rod (96, 98) is articulated at said attachment rod (116, 118) via an arm (120) which extends downwards.
6. A bogie according to any one of the preceding claims, characterized in that the central coupling piece (78,188) comprises a bearing assembly (84), and that a lateral shock absorber (86) is disposed between said bearing (84) and said side-members (24, 26).
7. A bogie according to any one of the preceding claims, characterized in that it comprises at least one vertical shock absorber (130, 132) which is mounted between said longitudinal beams (52, 52, 182) and said side-members (24, 26).
8. A bogie according to any one of the preceding claims, characterized in that it comprises at least one seal which is interposed between an opening (56) provided in one said longitudinal beam and an opening provided in the sub-chassis of the carriage, said seal comprising a slide shoe (156) having a cavity in which a resilient element (158) is housed, and a teflon plate (154) covering said slide shoe (156) and said resilient element.
9. A bogie according to any one of claims 1 to 7, characterized in that it comprises at least a seal interposed between an opening (156) in a longitudinal beam and an opening of the sub-chassis of the carriage, said seal comprising a slide shoe (156) made of teflon and having an cavity in which the resilient element (158) is housed, and a metal plate (154) covering said slide shoe and said resilient element.
10. A bogie according to any one of the preceding claims, characterized in that the central coupling piece (78,188) presents a housing (190) conceived to receive the central pivot (76, 192) of the carriage.
11. A bogie according to claim 10, characterized in that the housing (190) is conceived to receive a carriage pivot (192) of conical shape.
12. A bogie according to any one of the preceding claims, characterized in that it comprises means (124, 126) for restricting the rotational movement of the attachment rods (116, 118) on the side of the articulations of said attachment rods with the connection rods (96, 98).
13. A bogie according to any one of the preceding claims, characterized in that it comprises means (186) mounted on said longitudinal beams (186) for restricting their downwards movement with respect to the side members.
EP83402244A 1982-11-22 1983-11-22 Bogie for a railway vehicle Expired EP0109910B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83402244T ATE31684T1 (en) 1982-11-22 1983-11-22 RAILWAY CAR BOGGIE.

Applications Claiming Priority (2)

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US44344082A 1982-11-22 1982-11-22
US443440 1982-11-22

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EP0109910A2 EP0109910A2 (en) 1984-05-30
EP0109910A3 EP0109910A3 (en) 1985-10-16
EP0109910B1 true EP0109910B1 (en) 1988-01-07

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EP2589523A1 (en) * 2011-11-01 2013-05-08 Bombardier Transportation (Switzerland) AG Bogie for an urban vehicle such as a tyre-mounted subway train operating in an exclusive lane
DE102017210478B3 (en) * 2017-06-22 2018-07-26 Siemens Aktiengesellschaft Railway vehicle

Citations (1)

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Publication number Priority date Publication date Assignee Title
US3774549A (en) * 1971-11-15 1973-11-27 Gen Steel Ind Inc Fluid sprung railway truck

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Publication number Priority date Publication date Assignee Title
BE409099A (en) * 1935-04-20
US2896551A (en) * 1955-08-29 1959-07-28 Gen Steel Castings Corp Railway truck air spring structure
CH387684A (en) * 1960-08-25 1965-02-15 Reunis Sa Ateliers Air suspension bogie
CH393403A (en) * 1962-06-07 1965-06-15 Inventio Ag Bogie for rail vehicles
AU470196B2 (en) * 1973-09-06 1976-03-04 Lukens General Industries Inc. Fluid sprung railway bogie
AU471505B2 (en) * 1973-09-06 1976-04-29 Lukens General Industries Inc. Fluid railway vehicle suspensions

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Publication number Priority date Publication date Assignee Title
US3774549A (en) * 1971-11-15 1973-11-27 Gen Steel Ind Inc Fluid sprung railway truck

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EP0109910A2 (en) 1984-05-30
ATE31684T1 (en) 1988-01-15
DE3375119D1 (en) 1988-02-11
EP0109910A3 (en) 1985-10-16

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