EP3446944B1 - Coupling for a rail vehicle - Google Patents

Coupling for a rail vehicle Download PDF

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Publication number
EP3446944B1
EP3446944B1 EP18184729.4A EP18184729A EP3446944B1 EP 3446944 B1 EP3446944 B1 EP 3446944B1 EP 18184729 A EP18184729 A EP 18184729A EP 3446944 B1 EP3446944 B1 EP 3446944B1
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EP
European Patent Office
Prior art keywords
piston
coupling
cylinder
piston rod
head
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EP18184729.4A
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German (de)
French (fr)
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EP3446944A1 (en
Inventor
Mike Fassbind
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Faiveley Transport Schwab AG
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Faiveley Transport Schwab AG
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Publication of EP3446944A1 publication Critical patent/EP3446944A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
    • B61G7/00—Details or accessories
    • B61G7/10—Mounting of the couplings on the vehicle
    • B61G7/12—Adjustable coupling bars, e.g. for centralisation purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
    • B61G7/00—Details or accessories
    • B61G7/08—Adjustable coupling heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
    • B61G9/00—Draw-gear
    • B61G9/20—Details; Accessories
    • B61G9/24—Linkages between draw-bar and framework

Definitions

  • the invention relates to a coupling for a rail vehicle according to the preamble of claim 1.
  • Couplings of this type are, for example, in the EP 2 322 403 B1 revealed. As is known, they are used on passenger or freight trains and enable the coupling process to be carried out automatically even on winding routes. In the uncoupled state in general or in such a train component located in a curve It can result in the coupling head remaining in a swiveled-out position after the coupling process, so that if it is coupled with a different train composition, it may be necessary to pivot it back together with the pulling device before coupling.
  • centering can be switched on or off as required.
  • Such systems are generally held in the central position by means of one or more pneumatic cylinders by means of compressed air or are guided back into this. If necessary, eg when the clutch catch area is exhausted, the centering can be switched off by venting the cylinder. Then the coupling can be manually aligned with the counter coupling. It can also be used for coupling in bends or deflections where the couplings are outside the normal catch range.
  • the object of the invention is to improve a centering device of a clutch in such a way that it enables perfect centering and other functionalities in operation or for manual manipulations, and is built in a very space-saving manner.
  • the centering device comprises at least one telescopically controllable piston / cylinder unit with a master cylinder in which a master piston with a piston rod and a slave piston with a piston rod are guided longitudinally coaxially to one another. It is therefore only necessary to pressurize a medium on the main piston to achieve the central position of the coupling head in a direction running towards the secondary piston.
  • the at least one telescopically controllable piston / cylinder unit can be switched on or off very advantageously, so that the coupling can be pivoted almost without force when coupled or for manipulation. And it is also possible to swing the coupling away during maintenance work.
  • this piston / cylinder unit is constructed in such a way that the master cylinder contains the master piston for actuating its piston rod and the secondary piston with the other piston rod opposite it coaxially. This means that only one chamber of the piston / cylinder unit has to be pressurized with compressed air.
  • the centering device prefferably provides two piston / cylinder units arranged laterally approximately symmetrically or parallel to its central axis. As a result, the actuating force exerted by the centering device can be doubled.
  • the piston rod of the master cylinder is advantageously articulated on the vehicle body, while the piston rod of the secondary piston is articulated laterally offset from its central axis on a side flange of the traction device.
  • the centering device with the at least one piston / cylinder unit is advantageously designed and controllable in such a way that the coupling head with the pulling device can be pivoted into a certain deflected position in the uncoupled state.
  • the multi-position cylinder can be adjusted from a central position as a starting position into a fully retracted or a fully extended position or an intermediate position.
  • the coupling process can always be carried out starting from one and the same favorable position of the coupling heads, regardless of the course of the route.
  • Coupling half shown is part of an automatic coupling for rail vehicles, which can be used both on straight and on curved routes. It basically consists of a coupling head 1 and a traction device 2 connected to it in the form of a hydraulic cylinder, which is arranged as a connecting part to the vehicle and with which the tensile or compressive forces occurring during driving operation are introduced into the vehicle body 6 of the vehicle.
  • the coupling head 1 and the traction device 2 are usually in the center arranged between two buffers, which in turn are mounted on a front part of the vehicle body 6.
  • the coupling head 1 together with the pulling device 2 is pivotally mounted to the left and right about the central axis of a pivot pin 7 mounted in the vehicle body 6.
  • the coupling is provided with a centering device 8, which in the uncoupled state holds the coupling head 1 in a neutral central position or automatically returns it to the neutral central position after the coupling has been released.
  • This centering device 8 essentially consists of two identically designed piston / cylinder units 9, 10 which are telescopically compressible or extendable and are arranged laterally from the coupling head 1 together with the pulling device 2 symmetrically and approximately or axially parallel or at a suitable angle to the central axis thereof.
  • the preferably pneumatic piston / cylinder units 9, 10 are optionally articulated at their ends 11, 12 or 13, 14 on the one hand on the vehicle body 6 or a support of the clutch and on the other hand on a side flange 15 of the traction device 2.
  • the centering device 8 comprises at least one telescopically controllable piston / cylinder unit 9, 10 with a master cylinder 16 in which a master piston 18 with a piston rod 19 and a secondary piston 20 with a piston rod 17 are guided coaxially to one another.
  • a pressurization of a medium on the main piston 18 to achieve the central position of the coupling head 1 is only necessary in a direction running against the secondary piston 20.
  • a pressure connection 26 is provided on the cylinder head 21 of the master cylinder 16 and, regardless of whether the piston / cylinder unit 9, 10 is in the retracted or opposite position in the extended position or vice versa after uncoupling, it becomes when the pressure is switched on according to the pressure connection 26 in this middle position Fig. 4 brought.
  • the main piston 18 is either for the collision from an extended position Fig. 5 pressed against the rod head 31 and thus against the piston rod 19 until it strikes the secondary piston 20 or the master cylinder 16, or it is pressed against one another from a compressed position Fig. 3 pressed against the secondary piston 20 until the latter also strikes the master cylinder 16.
  • controllable piston / cylinder units 9, 10 can advantageously be switched on or off so that the coupling can be pivoted almost without force when coupled or for manipulation.
  • the master cylinder 16 is closed at the end facing away from the piston rod 17 with a removable cylinder head 21, which has a through bore 22 for gas-tight guiding of the piston rod 19 and is therefore provided with a seal 23, a guide band 24 and a scraper 25.
  • the main piston 18 has guide bands 29 and seals 30 for the piston rod 19 which can be moved coaxially therein.
  • the latter is provided with a disc-shaped rod head 31 designed as a driver. Its diameter is dimensioned such that it can be displaced in the piston rod 17 in the cavity 17 ′ formed.
  • a vent hole 32, a guide band 33 and a wiper 34 In the master cylinder 16 there are also a vent hole 32, a guide band 33 and a wiper 34.
  • a sealing ring 35 is also installed in the secondary piston 20. This piston rod 17 and the secondary piston 20 could also be made in one piece.
  • this pressure connection 26 is also provided with compressed air to act on the main piston 18, and in addition, an external displaceable guide rod (not shown in more detail) can be provided to prevent rotation of the cylinder 16.
  • this master piston 18 is guided longitudinally in the master cylinder 16, by means of which the one piston rod 19 is freely displaceable at least in the pressure direction.
  • This second piston rod 17, coaxial with the main piston 18 and with the secondary piston 20 connected to it, is longitudinally sealed in the master cylinder 16.
  • this centering device 8 can be controlled with the at least one piston / cylinder unit 9, 10 such that the respective coupling half can be actively pivoted into a certain deflected position in the uncoupled state.
  • the piston / cylinder unit 9, 10 which is designed as a multi-position cylinder, is therefore designed in such a way that it corresponds to the starting position from the central position Fig. 4 in the fully extended position according to Fig. 5 or in the fully retracted position according to Fig. 3 or can be adjusted to desired intermediate positions.
  • the side flange 15 experiences a different pivoting in or out, which it transmits to the pulling device 2 together with the coupling head 1.
  • a pressure connection 16 ′′ acting on the secondary piston 20 with the piston rod 17 and on the other hand a pressure connection 19 ′ acting on the rod head 31 in the cavity 17 ′ of the piston rod 17 for supplying a medium can be brought about by switching on, as is the case here in Fig. 5 is indicated. It becomes the piston rod 17 pushed into the master cylinder 16 up to the master piston 18 and the rod head 31 with the piston rod 19 connected to it moved into the cavity 17 'of the piston rod 17.
  • a pressure connection 17 "of a medium acting on the rod head 31 of the piston rod 19 of a medium must be switched into the piston rod 17 outside the master cylinder 16, so that the rod head 31 with the piston rod 19 and also the master cylinder 16 extend out of the piston rod 17.
  • controller 36 For the automatic switching of the piston / cylinder unit 9, 10 into the functionally appropriate working position, they are equipped with a preferably programmable controller 36.
  • the controller 36 also serves to switch the centering device 8 on and off, the latter being controlled in such a way that it enables the clutch to be deflected without force in the coupled state during driving operation.
  • the centering device according to the invention is characterized by a simple and space-saving construction and also a reliable and simple mode of operation, because it is basically only necessary to apply compressed air to a single chamber of the piston / cylinder unit 9, 10.
  • the coupling can be swiveled automatically into a deflected position, left or right.
  • Another advantage of the centering device according to the invention is that it can be switched on or off as required.
  • the centering device 8 is also functional with only one of the piston / cylinder units 9 or 10.
  • the variant with two cylinders working in opposite directions has the advantage, however, that the actuating force generated by the centering device 8 can be doubled and a force for the centering is generated from both sides.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
  • Actuator (AREA)

Description

Die Erfindung betrifft eine Kupplung für ein Schienenfahrzeug nach dem Oberbegriff des Anspruchs 1.The invention relates to a coupling for a rail vehicle according to the preamble of claim 1.

Kupplungen dieser Art sind beispielweise in der EP 2 322 403 B1 geoffenbart. Sie werden bekanntlich bei Personen- oder Güterzügen eingesetzt und ermöglichen die automatische Durchführung des Kupplungsvorgangs auch bei kurvigen Fahrstrecken. Im ungekuppelten Zustand im Allgemeinen oder bei solchen in einer Kurve befindlichen Zugskomponente kann es dazu führen, dass nach dem Kupplungsvorgang der Kupplungskopf in einer ausgeschwenkten Stellung dort verbleibt, so dass, wenn er mit einer anderen Zugkomposition gekuppelt wird, es gegebenenfalls erforderlich ist, ihn vor dem Kuppeln samt Zugeinrichtung zurückzuschwenken.Couplings of this type are, for example, in the EP 2 322 403 B1 revealed. As is known, they are used on passenger or freight trains and enable the coupling process to be carried out automatically even on winding routes. In the uncoupled state in general or in such a train component located in a curve It can result in the coupling head remaining in a swiveled-out position after the coupling process, so that if it is coupled with a different train composition, it may be necessary to pivot it back together with the pulling device before coupling.

Es ist bekannt, dass automatische Kupplungen mit einer Mittenzentrierung versehen sind, bei denen sich die jeweilige Kupplungshälfte im ungekuppelten Zustand selbsttätig in eine Mittelstellung begibt. Diese werden in der Regel durch ein Federsystem in der neutralen Mittelstellung gehalten und im gekuppelten Betrieb gegen die Federkraft ausgelenkt, sodass die Kupplung den Bewegungen der Gegenkupplung folgen kann.It is known that automatic clutches are provided with centering, in which the respective coupling half automatically moves into a central position in the uncoupled state. These are usually held in the neutral central position by a spring system and deflected against the spring force in coupled operation so that the coupling can follow the movements of the counter-coupling.

Es sind auch Ausführungen bekannt, bei denen die Kupplung nach Erreichen eines bestimmten Auslenkwinkels kraftlos werden. Das typische Verhalten solcher Mittenzentrierungen wird in der Regel durch den Einsatz einer Kurvenscheibe erreicht.Designs are also known in which the clutch becomes weak after reaching a certain deflection angle. The typical behavior of such centering is usually achieved by using a cam.

Es sind auch weitere Ausführungen bekannt, bei denen die Mittenzentrierung je nach Bedarf ein- bzw. ausgeschaltet werden können. Solche Systeme werden in der Regel mittels einem oder mehreren Pneumatikzylindern mittels Druckluft in der Mittelstellung gehalten oder in diese zurück geführt. Bei Bedarf, z.B. wenn der Fangbereich der Kupplung erschöpft ist, kann die Mittenzentrierung ausgeschaltet werden, in dem der Zylinder entlüftet wird. Dann kann die Kupplung manuell auf die Gegenkupplung ausgerichtet werden. Damit kann auch in Gleisbögen oder Ablenkungen gekuppelt werden, bei denen die Kupplungen jeweils ausserhalb des normalen Fangbereiches liegen.Other designs are also known in which the centering can be switched on or off as required. Such systems are generally held in the central position by means of one or more pneumatic cylinders by means of compressed air or are guided back into this. If necessary, eg when the clutch catch area is exhausted, the centering can be switched off by venting the cylinder. Then the coupling can be manually aligned with the counter coupling. It can also be used for coupling in bends or deflections where the couplings are outside the normal catch range.

Der Erfindung liegt die Aufgabe zugrunde, eine Zentriereinrichtung einer Kupplung derart zu verbessern, dass mit ihr eine einwandfreie Mittenzentrierung sowie weitere Funktionalitäten im Betrieb bzw. für manuelle Manipulationen ermöglicht werden und sie dabei sehr platzsparend gebaut ist.The object of the invention is to improve a centering device of a clutch in such a way that it enables perfect centering and other functionalities in operation or for manual manipulations, and is built in a very space-saving manner.

Diese Aufgabe ist erfindungsgemäss nach den Merkmalen des Anspruchs 1 gelöst.This object is achieved according to the features of claim 1.

Erfindungsgemäss umfasst die Zentriereinrichtung mindestens eine teleskopartig steuerbare Kolben/Zylindereinheit mit einem Hauptzylinder, in dem ein Hauptkolben mit einer Kolbenstange und ein Nebenkolben mit einer Kolbenstange koaxial zueinander längsgeführt sind. Es ist damit nur eine Druckbeaufschlagung eines Mediums auf den Hauptkolben zur Erzielung der Mittelstellung des Kupplungskopfs in einer gegen den Nebenkolben hin verlaufenden Richtung erforderlich.According to the invention, the centering device comprises at least one telescopically controllable piston / cylinder unit with a master cylinder in which a master piston with a piston rod and a slave piston with a piston rod are guided longitudinally coaxially to one another. It is therefore only necessary to pressurize a medium on the main piston to achieve the central position of the coupling head in a direction running towards the secondary piston.

Mit einer solchen Ausgestaltung der Zentriereinrichtung ergibt sich eine sehr platzsparende Bauweise für die Zentrierung des Kupplungskopfs und es ist dabei aber ein grosser Maximalhub gewährleistet.Such a configuration of the centering device results in a very space-saving design for centering the coupling head, but a large maximum stroke is guaranteed.

Sehr vorteilhaft ist die mindestens eine teleskopartig steuerbare Kolben/Zylindereinheit ein- bzw. ausschaltbar, damit die Kupplung im gekuppelten Zustand oder zum Manipulieren nahezu kraftlos schwenkbar ist. Und es ist auch dadurch möglich, die Kupplung während der Wartungsarbeiten wegzuschwenken.The at least one telescopically controllable piston / cylinder unit can be switched on or off very advantageously, so that the coupling can be pivoted almost without force when coupled or for manipulation. And it is also possible to swing the coupling away during maintenance work.

Diese Kolben/Zylindereinheit ist wie oben erläutert so aufgebaut, dass der Hauptzylinder den Hauptkolben zum Betätigen seiner Kolbenstange und den koaxial zu ihm gegenüberstehenden Nebenkolben mit der andern Kolbenstange beinhaltet. Dadurch muss grundsätzlich nur eine Kammer der Kolben/Zylindereinheit mit Druckluft beaufschlagt werden.As explained above, this piston / cylinder unit is constructed in such a way that the master cylinder contains the master piston for actuating its piston rod and the secondary piston with the other piston rod opposite it coaxially. This means that only one chamber of the piston / cylinder unit has to be pressurized with compressed air.

Es ist dabei zweckmässig, die Zentriereinrichtung auch mit zwei seitlich vom Kupplungskopf annähernd symmetrisch bzw. parallel zu dessen Mittelachse angeordneten Kolben/Zylindereinheiten zu versehen. Dadurch kann die von der Zentriereinrichtung ausgeübte Betätigungskraft verdoppelt werden.It is expedient to provide the centering device with two piston / cylinder units arranged laterally approximately symmetrically or parallel to its central axis. As a result, the actuating force exerted by the centering device can be doubled.

Vorteilhaft ist die Kolbenstange des Hauptzylinders am Fahrzeugkasten gelenkig aufgehängt, während die Kolbenstange des Nebenkolbens an einem Seitenflansch der Zugeinrichtung seitlich versetzt von ihrer Mittelachse angelenkt ist.The piston rod of the master cylinder is advantageously articulated on the vehicle body, while the piston rod of the secondary piston is articulated laterally offset from its central axis on a side flange of the traction device.

Mit Vorteil ist im Rahmen der Erfindung ist die Zentriereinrichtung mit der mindestens einen Kolben/Zylindereinheit derart ausgebildet und ansteuerbar, dass der Kupplungskopf mit der Zugeinrichtung im ungekuppelten Zustand in eine bestimmte ausgelenkte Position schwenkbar ist.Within the scope of the invention, the centering device with the at least one piston / cylinder unit is advantageously designed and controllable in such a way that the coupling head with the pulling device can be pivoted into a certain deflected position in the uncoupled state.

Mit dieser teleskopartig ausziehbaren Kolben/Zylindereinheit wird erreicht, dass der als Mehrstellungszylinder aus einer Mittelstellung als Ausgangsposition in eine voll eingezogene oder eine voll ausgezogene Stellung oder eine Zwischenstellung verstellbar ist.With this telescopically extendable piston / cylinder unit it is achieved that the multi-position cylinder can be adjusted from a central position as a starting position into a fully retracted or a fully extended position or an intermediate position.

Auf diese Weise kann der Kupplungsvorgang unabhängig vom Verlauf der Fahrstrecke stets ausgehend von einer und derselben günstigen Position der Kupplungsköpfe durchgeführt werden.In this way, the coupling process can always be carried out starting from one and the same favorable position of the coupling heads, regardless of the course of the route.

Die Erfindung ist nachfolgend anhand von Ausführungsbeispielen unter Bezugnahme auf die Zeichnung näher erläutert. Es zeigen:

Fig. 1
eine Kupplungshälfte einer Kupplung eines Schienenfahrzeugs mit einer erfindungsgemässen Zentriereinrichtung, in einer Draufsicht von unten dargestellt;
Fig. 2
einen Längsschnitt einer Kolben/Zylindereinheit der Zentriereinrichtung gemäss Fig. 1;
Fig. 3
eine Kolben/Zylindereinheit im Schnitt in zusammengedrückter Stellung;
Fig. 4
die Kolben/Zylindereinheit nach Fig. 3, in der Mittelstellung dargestellt; und
Fig. 5
die Kolben/Zylindereinheit nach Fig.3, in voll ausgezogener Stellung dargestellt.
The invention is explained in more detail below using exemplary embodiments with reference to the drawing. Show it:
Fig. 1
a coupling half of a coupling of a rail vehicle with a centering device according to the invention, shown in a plan view from below;
Fig. 2
a longitudinal section of a piston / cylinder unit according to the centering device Fig. 1 ;
Fig. 3
a piston / cylinder unit in section in the compressed position;
Fig. 4
the piston / cylinder unit after Fig. 3 , shown in the middle position; and
Fig. 5
the piston / cylinder unit after Fig. 3 , shown in the fully extended position.

Die in Fig. 1 gezeigte Kupplungshälfte ist Bestandteil einer automatischen Kupplung für Schienenfahrzeuge, die sowohl auf geraden als auch auf kurvigen Strecken einsetzbar ist. Sie besteht grundsätzlich aus einem Kupplungskopf 1 und einer mit ihm verbundenen Zugeinrichtung 2 in Gestalt eines Hydraulikzylinders, der als Verbindungsteil zum Fahrzeug angeordnet ist und mit ihm die im Fahrbetrieb auftretenden Zug- oder Druckkräfte in den Fahrzeugkasten 6 des Fahrzeuges eingeleitet werden. Üblicherweise sind der Kupplungskopf 1 und die Zugeinrichtung 2 mittig zwischen zwei Puffern angeordnet, die ihrerseits an einem Frontteil des Fahrzeugkastens 6 montiert sind.In the Fig. 1 Coupling half shown is part of an automatic coupling for rail vehicles, which can be used both on straight and on curved routes. It basically consists of a coupling head 1 and a traction device 2 connected to it in the form of a hydraulic cylinder, which is arranged as a connecting part to the vehicle and with which the tensile or compressive forces occurring during driving operation are introduced into the vehicle body 6 of the vehicle. The coupling head 1 and the traction device 2 are usually in the center arranged between two buffers, which in turn are mounted on a front part of the vehicle body 6.

Damit die Kupplung unabhängig von der Geometrie der Fahrstrecke arbeiten kann, ist der Kupplungskopf 1 samt Zugeinrichtung 2 nach links und rechts um die Mittelachse eines im Fahrzeugkasten 6 gelagerten Gelenkbolzens 7 schwenkbar gelagert.So that the coupling can work independently of the geometry of the route, the coupling head 1 together with the pulling device 2 is pivotally mounted to the left and right about the central axis of a pivot pin 7 mounted in the vehicle body 6.

Um aber den Kupplungsvorgang möglichst unabhängig von solchen Schwenkungen auszuführen, ist die Kupplung mit einer Zentriereinrichtung 8 versehen, die im ungekuppelten Zustand den Kupplungskopf 1 in einer neutralen Mittelstellung hält oder ihn nach Lösen der Kupplung automatisch in die neutrale Mittelstellung zurückführt.However, in order to carry out the coupling process as independently of such swivels as possible, the coupling is provided with a centering device 8, which in the uncoupled state holds the coupling head 1 in a neutral central position or automatically returns it to the neutral central position after the coupling has been released.

Diese Zentriereinrichtung 8 besteht im Wesentlichen aus zwei identisch ausgebildeten Kolben/Zylindereinheiten 9, 10, die teleskopisch zusammendrückbar oder ausziehbar sind und seitlich vom Kupplungskopf 1 samt Zugeinrichtung 2 symmetrisch und annähernd oder achsparallel oder in einem geeigneten Winkel zu deren Mittelachse angeordnet sind.This centering device 8 essentially consists of two identically designed piston / cylinder units 9, 10 which are telescopically compressible or extendable and are arranged laterally from the coupling head 1 together with the pulling device 2 symmetrically and approximately or axially parallel or at a suitable angle to the central axis thereof.

Die vorzugsweise pneumatisch arbeitenden Kolben/Zylindereinheiten 9, 10 sind wahlweise an ihren Enden 11, 12 bzw. 13, 14 jeweils einerseits am Fahrzeugkasten 6 oder einem Support der Kupplung und andererseits an einem Seitenflansch 15 der Zugeinrichtung 2 angelenkt.The preferably pneumatic piston / cylinder units 9, 10 are optionally articulated at their ends 11, 12 or 13, 14 on the one hand on the vehicle body 6 or a support of the clutch and on the other hand on a side flange 15 of the traction device 2.

Wie aus Fig. 2 ersichtlich ist, umfasst die Zentriereinrichtung 8 erfindungsgemäss mindestens eine teleskopartig steuerbare Kolben/Zylindereinheit 9, 10 mit einem Hauptzylinder 16, in dem ein Hauptkolben 18 mit einer Kolbenstange 19 und ein Nebenkolben 20 mit einer Kolbenstange 17 koaxial zueinander längsgeführt sind. Eine Druckbeaufschlagung eines Mediums auf den Hauptkolben 18 zur Erzielung der Mittelstellung des Kupplungskopfs 1 ist nur in einer gegen den Nebenkolben 20 hin verlaufenden Richtung erforderlich.How out Fig. 2 can be seen, the centering device 8 according to the invention comprises at least one telescopically controllable piston / cylinder unit 9, 10 with a master cylinder 16 in which a master piston 18 with a piston rod 19 and a secondary piston 20 with a piston rod 17 are guided coaxially to one another. A pressurization of a medium on the main piston 18 to achieve the central position of the coupling head 1 is only necessary in a direction running against the secondary piston 20.

Zu diesem Zwecke ist ein Druckanschluss 26 beim Zylinderkopf 21 des Hauptzylinders 16 vorgesehen und unabhängig davon, ob sich die Kolben/Zylindereinheit 9, 10 nach dem Entkuppeln in der eingefahrenen bzw. gegenüberliegend in der ausgefahrenen Position oder umgekehrt befindet, wird sie beim Einschalten der Druckbeaufschlagung beim Druckanschluss 26 in diese Mittelstellungs-Position gemäss Fig. 4 gebracht.For this purpose, a pressure connection 26 is provided on the cylinder head 21 of the master cylinder 16 and, regardless of whether the piston / cylinder unit 9, 10 is in the retracted or opposite position in the extended position or vice versa after uncoupling, it becomes when the pressure is switched on according to the pressure connection 26 in this middle position Fig. 4 brought.

Der Hauptkolben 18 wird dabei entweder für das Zusammenstossen aus einer ausgezogenen Position gemäss Fig. 5 gegen den Stangenkopf 31 und damit gegen die Kolbenstange 19 gedrückt, bis er beim Nebenkolben 20 bzw. dem Hauptzylinder 16 anschlägt, oder er wird für das Auseinanderstossen aus einer zusammengedrückten Position gemäss Fig. 3 gegen den Nebenkolben 20 gedrückt, bis letzterer ebenfalls beim Hauptzylinder 16 anschlägt.The main piston 18 is either for the collision from an extended position Fig. 5 pressed against the rod head 31 and thus against the piston rod 19 until it strikes the secondary piston 20 or the master cylinder 16, or it is pressed against one another from a compressed position Fig. 3 pressed against the secondary piston 20 until the latter also strikes the master cylinder 16.

Vorteilhaft sind diese steuerbaren Kolben/Zylindereinheiten 9, 10 ein- bzw. ausschaltbar, damit die Kupplung im gekuppelten Zustand oder zum Manipulieren nahezu kraftlos geschwenkt werden kann.These controllable piston / cylinder units 9, 10 can advantageously be switched on or off so that the coupling can be pivoted almost without force when coupled or for manipulation.

Der Hauptzylinder 16 ist am von der Kolbenstange 17 abgekehrten Ende mit einem abnehmbaren Zylinderkopf 21 abgeschlossen, der eine Durchlassbohrung 22 zum gasdichten Führen der Kolbenstange 19 aufweist und deshalb mit einer Dichtung 23, einem Führungsband 24 und einem Abstreifer 25 versehen ist.The master cylinder 16 is closed at the end facing away from the piston rod 17 with a removable cylinder head 21, which has a through bore 22 for gas-tight guiding of the piston rod 19 and is therefore provided with a seal 23, a guide band 24 and a scraper 25.

Der Hauptkolben 18 weist Führungsbänder 29 und Dichtungen 30 für die in ihm koaxial bewegbare Kolbenstange 19 auf. Letztere ist mit einem als Mitnehmer ausgebildeten scheibenförmigen Stangenkopf 31 versehen. Sein Durchmesser ist so bemessen, dass er in dem gebildeten Hohlraum 17' in der Kolbenstange 17 verschiebbar ist. Im Hauptzylinder 16 befinden sich ferner eine Entlüftungsbohrung 32, ein Führungsband 33 und ein Abstreifer 34. Im Nebenkolben 20 ist auch ein Dichtring 35 eingebaut. Diese Kolbenstange 17 und der Nebenkolben 20 könnten auch einstückig gefertigt sein.The main piston 18 has guide bands 29 and seals 30 for the piston rod 19 which can be moved coaxially therein. The latter is provided with a disc-shaped rod head 31 designed as a driver. Its diameter is dimensioned such that it can be displaced in the piston rod 17 in the cavity 17 ′ formed. In the master cylinder 16 there are also a vent hole 32, a guide band 33 and a wiper 34. A sealing ring 35 is also installed in the secondary piston 20. This piston rod 17 and the secondary piston 20 could also be made in one piece.

Im Zylinderkopf 21 ist auch dieser Druckanschluss 26 zum Beaufschlagen des Hauptkolbens 18 mit Druckluft versehen, und ausserdem kann eine nicht näher gezeigte aussenliegende verschiebbare Führungsstange als Verdrehsicherung des Zylinders 16 vorgesehen sein.In the cylinder head 21, this pressure connection 26 is also provided with compressed air to act on the main piston 18, and in addition, an external displaceable guide rod (not shown in more detail) can be provided to prevent rotation of the cylinder 16.

Im Rahmen der Erfindung ist im Hauptzylinder 16 dieser Hauptkolben 18 dicht längsgeführt, durch den die eine Kolbenstange 19 dicht zumindest in Druckrichtung frei verschiebbar ist. Diese zu dem Hauptkolben 18 koaxial gegenüberstehende zweite Kolbenstange 17 mit dem mit dieser verbundenen Nebenkolben 20 ist dicht im Hauptzylinder 16 längsgeführt.In the context of the invention, this master piston 18 is guided longitudinally in the master cylinder 16, by means of which the one piston rod 19 is freely displaceable at least in the pressure direction. This second piston rod 17, coaxial with the main piston 18 and with the secondary piston 20 connected to it, is longitudinally sealed in the master cylinder 16.

In der zusammengedrückten Stellung gemäss Fig. 3 ist die Kolbenstange 17 mit dem Nebenkolben 20 in den Hauptzylinder 16 und die Kolbenstange 19 in einen in der gegenüberliegenden Kolbenstange 17 vorgesehenen Hohlraum 17' hineingestossen.In the compressed position according to Fig. 3 is the piston rod 17 with the secondary piston 20 in the master cylinder 16 and the piston rod 19 pushed into a cavity 17 'provided in the opposite piston rod 17.

In der ausgezogenen Stellung gemäss Fig. 5 hat die Kolbenstange 19 den Hauptkolben 18 in den Hohlraum 16' des Hauptzylinders 16 hineingezogen und der Nebenkolben 20 mit der Kolbenstange 17 liegt am Hauptzylinder 16 auf.In the extended position according to Fig. 5 the piston rod 19 has pulled the main piston 18 into the cavity 16 ′ of the master cylinder 16 and the secondary piston 20 with the piston rod 17 rests on the master cylinder 16.

Bei einer weiteren erfindungsgemässen Ausbildung ist diese Zentriereinrichtung 8 mit der mindestens einen Kolben/Zylindereinheit 9, 10 derart ansteuerbar, dass die jeweilige Kupplungshälfte im ungekuppelten Zustand in eine bestimmte ausgelenkte Position aktiv schwenkbar ist.In a further embodiment according to the invention, this centering device 8 can be controlled with the at least one piston / cylinder unit 9, 10 such that the respective coupling half can be actively pivoted into a certain deflected position in the uncoupled state.

Die als Mehrstellungszylinder ausgebildete Kolben/Zylindereinheit 9, 10 ist daher so ausgebildet, dass sie aus der Mittelstellung als Ausgangsposition gemäss Fig. 4 in die voll ausgefahrene Stellung gemäss Fig. 5 bzw. in die voll eingefahrene Stellung gemäss Fig. 3 oder in gewünschte Zwischenstellungen gesteuert verstellbar ist. Je nachdem, welche Kolben/Zylindereinheit 9, 10 diese letztere Stellung einnimmt, erfährt der Seitenflansch 15 eine unterschiedliche Ein- oder Ausschwenkung, die er auf die Zugeinrichtung 2 samt Kupplungskopf 1 überträgt.The piston / cylinder unit 9, 10, which is designed as a multi-position cylinder, is therefore designed in such a way that it corresponds to the starting position from the central position Fig. 4 in the fully extended position according to Fig. 5 or in the fully retracted position according to Fig. 3 or can be adjusted to desired intermediate positions. Depending on which piston / cylinder unit 9, 10 assumes this latter position, the side flange 15 experiences a different pivoting in or out, which it transmits to the pulling device 2 together with the coupling head 1.

Bei einem gesteuerten teleskopartigen Zusammenstossen kann durch Einschalten einerseits eines auf den Nebenkolben 20 mit der Kolbenstange 17 wirkenden Druckanschlusses 16"und andererseits eines auf den Stangenkopf 31 im Hohlraum 17' der Kolbenstange 17 wirkenden Druckanschlusses 19' für die Zuführung eines Mediums herbeigeführt werden, wie dies in Fig. 5 angedeutet ist. Es wird dabei die Kolbenstange 17 in den Hauptzylinder 16 bis zum Hauptkolben 18 gestossen und der Stangenkopf 31 mit der mit ihm verbundenen Kolbenstange 19 in den Hohlraum 17' der Kolbenstange 17 hineinbewegt.In the case of a controlled telescopic collision, a pressure connection 16 ″ acting on the secondary piston 20 with the piston rod 17 and on the other hand a pressure connection 19 ′ acting on the rod head 31 in the cavity 17 ′ of the piston rod 17 for supplying a medium can be brought about by switching on, as is the case here in Fig. 5 is indicated. It becomes the piston rod 17 pushed into the master cylinder 16 up to the master piston 18 and the rod head 31 with the piston rod 19 connected to it moved into the cavity 17 'of the piston rod 17.

Für das teleskopartige Auseinanderstossen ist ein auf den Stangenkopf 31 der Kolbenstange 19 wirkender Druckanschluss 17" eines Mediums in die Kolbenstange 17 ausserhalb des Hauptzylinders 16 einzuschalten, so dass der Stangenkopf 31 mit der Kolbenstange 19 und auch der Hauptzylinder 16 aus der Kolbenstange 17 ausfährt.For telescopic thrusting, a pressure connection 17 "of a medium acting on the rod head 31 of the piston rod 19 of a medium must be switched into the piston rod 17 outside the master cylinder 16, so that the rod head 31 with the piston rod 19 and also the master cylinder 16 extend out of the piston rod 17.

Im Prinzip könnte für dieses Verstellen in bestimmte ausgelenkte Positionen bei Vorhandensein von zwei Kolben/Zylindereinheiten 9, 10, wie in Fig. 1 dargestellt ist, nur die eine in diese bestimmte ausgelenkte Position angesteuert werden, während die andere Kolben/Zylindereinheit 9, 10 ausgeschaltet und sich frei anpassen würde.In principle, for this adjustment in certain deflected positions in the presence of two piston / cylinder units 9, 10, as in Fig. 1 is shown, only the one deflected into this particular position, while the other piston / cylinder unit 9, 10 would be switched off and adapt freely.

Zum automatischen Schalten der Kolben/Zylindereinheit 9, 10 in die jeweils funktionsgerechte Arbeitsstellung sind sie mit einer vorzugsweise programmierbaren Steuerung 36 ausgestattet. Die Steuerung 36 dient auch zum Ein- und Ausschalten der Zentriereinrichtung 8, wobei diese so gesteuert wird, dass sie während des Fahrbetriebs eine kraftlose Auslenkung der Kupplung im gekuppelten Zustand ermöglicht.For the automatic switching of the piston / cylinder unit 9, 10 into the functionally appropriate working position, they are equipped with a preferably programmable controller 36. The controller 36 also serves to switch the centering device 8 on and off, the latter being controlled in such a way that it enables the clutch to be deflected without force in the coupled state during driving operation.

Die erfindungsgemässe Zentriereinrichtung zeichnet sich durch eine einfache und platzsparende Konstruktion und zudem eine zuverlässige sowie einfache Wirkungsweise aus, weil es dafür grundsätzlich nur erforderlich ist, eine einzige Kammer der Kolben/Zylindereinheit 9, 10 mit Druckluft zu beaufschlagen.The centering device according to the invention is characterized by a simple and space-saving construction and also a reliable and simple mode of operation, because it is basically only necessary to apply compressed air to a single chamber of the piston / cylinder unit 9, 10.

Bei einer selektiven Ansteuerung von zwei Luftkammern kann die Kupplung automatisch in eine ausgelenkte Stellung, links oder rechts, ausgeschwenkt werden.With a selective control of two air chambers, the coupling can be swiveled automatically into a deflected position, left or right.

Ein weiterer Vorteil der erfindungsgemässen Zentriereinrichtung ist, dass sie bei Bedarf ein- oder ausgeschaltet werden kann.Another advantage of the centering device according to the invention is that it can be switched on or off as required.

Die Zentriereinrichtung 8 ist auch mit nur einer der Kolben/Zylindereinheiten 9 oder 10 funktionsfähig. Die Variante mit zwei gegenläufig arbeitenden Zylindern hat jedoch den Vorteil, dass sich dadurch die von der Zentriereinrichtung 8 erzeugte Betätigungskraft verdoppeln lässt und von beiden Seiten eine Kraft für die Zentrierung erzeugt wird.The centering device 8 is also functional with only one of the piston / cylinder units 9 or 10. The variant with two cylinders working in opposite directions has the advantage, however, that the actuating force generated by the centering device 8 can be doubled and a force for the centering is generated from both sides.

Claims (11)

  1. Coupling for a railway vehicle, with two coupling halves, each having a coupling head (1) and a traction device (2) connected to it, whereby the coupling head (1) together with the traction device (2) being pivotable about a central bolt (7) in the vehicle body, wherein both coupling halves are each provided with a centering device (8), which in the uncoupled state holds the coupling head (1) together with the traction device (2) in a central position or automatically returns it to this central position after loosening the coupling, in which this coupling head (1) is approximately aligned in the longitudinal direction of the rail vehicle, characterized in that
    the centering device (8) comprises at least one telescopically adjustable piston / cylinder unit (9, 10) with a main cylinder (16), in which a main piston (18) with a piston rod (19) and an auxiliary piston (20) with a piston rod (17) are guided longitudinally coaxially with one another, whereby a pressurization of a medium on the main piston (18) is provided to achieve the central position of the coupling head (1) only in a direction running towards the secondary piston (20).
  2. Coupling according to claim 1, characterized in that
    a pressure connection (26) is provided in the cylinder head (21) of the main cylinder (16) for pressurizing the main piston (18) in the cylinder chamber (16') with preferably compressed air as medium.
  3. Coupling according to claim 1 or 2, characterized in that
    the ends of the piston rods (17, 19) projecting from the main cylinder (16) on the one hand on a side flange (15) of the traction device (2) and on the other hand on the vehicle body or support of the coupling (6) are each laterally offset from their central axis.
  4. Coupling according to any one of the claims 1 to 3, characterized in that
    the piston rod (19) extends through the main piston (18), which is tight guided longitudinally in the main cylinder (16) and is tight freely displaceable therein, while the coaxially opposite piston rod (17) is connected with the auxiliary piston (20), whereby to the piston rod (19) being assigned a rod head (31) within the main cylinder (16), through which the piston rod (19) is carried by the main piston (18) in this direction against the auxiliary piston (20).
  5. Coupling according to any one of the claims 1 to 4, characterized in that
    in the retracted position of the piston / cylinder unit (9, 10) the piston rods (17) are pushed in the main cylinder (16) and thereby the one piston rod (19) is pushed in one in the opposite piston rod (17) provided cavity space (17') or vice versa.
  6. Coupling according to any one of the claims 1 to 5, characterized in that
    the piston / cylinder unit (9 or 10) is provided with a preferably programmable controller (36) for the automatically switching the cylinder into the respective functionally appropriate working position.
  7. Coupling according to claim 6, characterized in that
    the controller (36) also serves to switch on and off the centering device (8), whereby this enables a powerless deflection of the coupling in the coupled state during the driving operation.
  8. Coupling according to any one of the claims 1 to 7, characterized in that
    the centering device (8) with the at least one piston / cylinder unit (9, 10) is designed and controllable such that the coupling head (1) with the traction device (2) in the uncoupled state is pivotable into a certain deflected position.
  9. Coupling according to claim 8, characterized in that
    for the telescopic pushing apart of the piston / cylinder unit (9, 10) a pressure connection (17") for the medium being outside of the main cylinder (16) is provided acting on the rod head (31) of the piston rod (19), which can be let into the cavity space (17') of the piston rod (17) and the cylinder chamber (16').
  10. Coupling according to claim 8 or 9, characterized in that
    for the telescopic pushing together of the piston / cylinder unit (9, 10) a pressure connection (16") of a medium can be switched on acting on the auxiliary piston (20) with the piston rod (17) against the main piston (18) and a respective pressure connection (19') can be switched on acting on a rod head (31) in the cavity space (17') of the piston rod (17).
  11. Coupling according to any one of the claims 1 to 10, characterized in that
    the centering device (8) is composed of two piston / cylinder units (9, 10) arranged laterally from the coupling head (1) approximately symmetrically to its central axis.
EP18184729.4A 2017-08-23 2018-07-20 Coupling for a rail vehicle Active EP3446944B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH01048/17A CH714078B1 (en) 2017-08-23 2017-08-23 Coupling for a rail vehicle.

Publications (2)

Publication Number Publication Date
EP3446944A1 EP3446944A1 (en) 2019-02-27
EP3446944B1 true EP3446944B1 (en) 2020-07-08

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Application Number Title Priority Date Filing Date
EP18184729.4A Active EP3446944B1 (en) 2017-08-23 2018-07-20 Coupling for a rail vehicle

Country Status (2)

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EP (1) EP3446944B1 (en)
CH (1) CH714078B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114889668B (en) * 2022-06-28 2023-08-01 中车制动系统有限公司 Floating type electric coupler pushing mechanism and coupler with same

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB623103A (en) * 1944-07-11 1949-05-12 Nat Malleable & Steel Castings Improvements in or relating to a car coupler
NL120712C (en) * 1961-03-30
CH702215A2 (en) * 2009-11-13 2011-05-13 Schwab Verkehrstechnik Ag Automatic coupling for rail vehicles with side buffers.
JP5650089B2 (en) * 2011-10-18 2015-01-07 株式会社日本製鋼所 Railway vehicle coupling device
KR20150132243A (en) * 2013-03-22 2015-11-25 웹텍 홀딩 코포레이션 Automated coupler positioning device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
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Also Published As

Publication number Publication date
CH714078B1 (en) 2021-08-16
EP3446944A1 (en) 2019-02-27
CH714078A2 (en) 2019-02-28

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