EP0501244B1 - Automatic coupling for railway vehicles - Google Patents

Automatic coupling for railway vehicles Download PDF

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Publication number
EP0501244B1
EP0501244B1 EP92102429A EP92102429A EP0501244B1 EP 0501244 B1 EP0501244 B1 EP 0501244B1 EP 92102429 A EP92102429 A EP 92102429A EP 92102429 A EP92102429 A EP 92102429A EP 0501244 B1 EP0501244 B1 EP 0501244B1
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EP
European Patent Office
Prior art keywords
coupling
coupling head
short
piston
line coupling
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 - Lifetime
Application number
EP92102429A
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German (de)
French (fr)
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EP0501244A1 (en
Inventor
Axel Dr. Schelle
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.)
Unicupler GmbH
Knorr Bremse AG
Original Assignee
Unicupler GmbH
Knorr Bremse AG
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Publication of EP0501244A1 publication Critical patent/EP0501244A1/en
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Publication of EP0501244B1 publication Critical patent/EP0501244B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
    • B61G5/00—Couplings for special purposes not otherwise provided for
    • B61G5/06—Couplings for special purposes not otherwise provided for for, or combined with, couplings or connectors for fluid conduits or electric cables
    • B61G5/08—Couplings for special purposes not otherwise provided for for, or combined with, couplings or connectors for fluid conduits or electric cables for fluid conduits

Definitions

  • the invention relates to an automatic coupling for rail vehicles, with a coupling head designed in particular as a rigid coupling Willison coupling head and with a cable coupling with a protruding, elastically push-back and pneumatic coupling forward in the coupling state, in the pressing direction against a counterconducting coupling head, loaded cable coupling head.
  • Such a coupling is known from DE-OS 2 022 201.
  • DE-OS 1 937 880 shows a similar coupling with a projecting, resiliently retractable line coupling head.
  • the line coupling head In couplings of the type mentioned at the outset, the line coupling head must be able to be pushed back relatively far against spring force in order to ensure that the coupling head of parts of the counter-coupling does not during coupling and uncoupling operations is damaged.
  • DE-OS 1 605 175 it is known, in order to avoid such damage, not only to retract the line coupling head against spring force, but also to deflect it to the side.
  • OS 1 605 166 or a short-stroke cylinder coupled to a forward pivoting lever, which frictionally locks the line coupling head to prevent it from running back, can be used.
  • these known arrangements can only be used in the presence of the above-mentioned feed gear, which can be actuated as a function of a mating clutch, and cannot be transferred to couplings of the type mentioned at the outset with the above, elastically push-back line coupling head.
  • an automatic clutch of the type mentioned by a short-stroke cylinder having a cylinder body and a piston the one part - cylinder body or piston - is coupled to the line coupling head, such that this part exerts a forward force on the line coupling head when pressure is applied to the short-stroke cylinder, and the other part - piston or cylinder body - is mounted so as to be relatively displaceable to the coupling head and to the line coupling head, and further by a locking mechanism which is locked against spring force only when the short-stroke cylinder is pressurized and which is arranged between the other part and the coupling head and which in its latching position locks the other part in a position relative to the coupling head against backward movement, in which position the one Part when the line coupling head is coupled is near its front end position relative to the other part.
  • a line coupling head 1 is shown, which is provided with a rearward projecting line pipe 2.
  • the line coupling head 1 with line pipe 2 is slidably supported in a coupling head, preferably a rigidly coupling Willison coupling head in the direction of the longitudinal axis 3, a spring, also not shown, loads it in the direction of the arrow 4, ie in the direction of displacement forward.
  • the pipe to be coupled, not shown, of the rail vehicle is connected to the pipe 2 by means of a sealed telescopic guide, a hose adapter or the like. movably coupled.
  • a short-stroke cylinder 5 In any direction next to the conduit 2, preferably below the conduit 2, there is a short-stroke cylinder 5 with a piston 6 and a cylinder body 7.
  • the piston 6 carries a piston rod 8 projecting forward in the direction of the arrow 4, the end of which is connected to a on the conduit 2 fixed bearing block 9 is articulated.
  • a cylinder space 10 in the cylinder body 7 which can be pressurized from the conduit 2 via a hose 11.
  • the piston 6 is loaded from the front by a back pressure spring 12.
  • the cylinder body 7 is mounted in a manner not shown parallel to the longitudinal axis 3 relative to the conduit 2.
  • a housing wall 19 of the coupling head which is not shown in the rest, which is located away from the conduit 2 laterally approximately next to the bearing block 13, has a forward-facing stop surface 20 against which the leg 18 is turned when the angle lever 14 is turned to the left, starting from FIG. 1 , can create from the front.
  • the piston 6 presses under its pressure medium from the cylinder space 10 via the piston rod 8 and the bearing block 9, the conduit 2 and thus the line coupling head 1 to the front and thus firmly against the opposite line coupling head, not shown, whereby the line coupling rings, also not shown, firmly and thus tightly against each other be pressed.
  • the parts of the clutch are in the position shown in FIG. 2, the piston 6 being located in the cylinder body 7 near its front end position.
  • Another possible modification is to interchange the piston and the cylinder body of the short-stroke cylinder with respect to their articulations and couplings with the conduit 2 or the angle lever 14.
  • the short-stroke cylinder can be designed as a membrane cylinder.
  • the line coupling head in the coupled state of the line coupling the line coupling head can be elastically pushed back against the pneumatic load by the short stroke cylinder, that is to say that only a part of the short stroke cylinder which is not rigidly coupled to the line coupling head is locked against displacement. This prevents damage to the line coupling head.
  • the automatic coupling for rail vehicles has a protruding, spring-returnable line coupling head 1.
  • a short-stroke cylinder 5 is provided for pneumatic sealing support of the line coupling, the piston 6 of which is articulated on the line coupling head 1 and the cylinder body 7 of which is held relative to the line coupling head 1.
  • the short-stroke cylinder 5 When the short-stroke cylinder 5 is pressurized, the relative displacement of the piston rod 8 and the cylinder body 7 rotates an angle lever 14 which is rotatably mounted on the cylinder body 7 such that its one leg 18 bears against a stop face 20 of the coupling head from the front and thus locks the cylinder body 7 against backward displacement .
  • the force resulting from the pressure medium acting on the piston 6 is then transmitted as a forward-facing force on the line coupling head 1, whereby the pressing and thus sealing of its coupling sealing ring to the countercurrent coupling head is supported.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Actuator (AREA)
  • Mechanical Operated Clutches (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)

Abstract

The automatic coupling for rail vehicles has a line coupling head 1 which is located at the front and can be pressed back in a resilient manner. In order to support the pneumatic sealing support of the line coupling a short-stroke cylinder 5 is provided whose piston 6 is coupled to the line coupling head 1 and whose cylinder body 7 is held so as to be displaceable element relative to the line coupling head 1. When the short-stroke cylinder 5 is subjected to pressure, as a result of the relative displacement of piston rod 8 and cylinder element 7 an angular lever 14 which is rotatably mounted on the cylinder element 7 is rotated in such a way that one of its legs 18 comes to rest from the front against a stop face 20 of the coupling head and thus blocks the cylinder element 7 against rearward displacement. The force resulting from the subjection to pressure medium of the piston 6 is then transmitted as forwardly directed force on the line coupling head 1, as a result of which the pressure and thus the seal of its coupling sealing ring with respect to the corresponding line coupling head is supported. <IMAGE>

Description

Die Erfindung betrifft eine selbsttätige Kupplung für Schienenfahrzeuge, mit einem insbesondere als starrkuppelnder Willison-Kupplungskopf ausgebildeten Kupplungskopf und mit einer Leitungskupplung mit vornstehendem, elastisch rückdrückbarem und im Kupplungszustand pneuamtisch nach vorne, in Andrückrichtung an einen Gegenleitungskupplungskopf, belastetem Leitungskupplungskopf.The invention relates to an automatic coupling for rail vehicles, with a coupling head designed in particular as a rigid coupling Willison coupling head and with a cable coupling with a protruding, elastically push-back and pneumatic coupling forward in the coupling state, in the pressing direction against a counterconducting coupling head, loaded cable coupling head.

Eine derartige Kupplung ist aus der DE-OS 2 022 201 bekannt. Eine ähnliche Kupplung mit vornstehendem, federnd rückverschieblichem Leitungskupplungskopf zeigt die DE-OS 1 937 880. Bei Kupplungen der eingangs genannten Art muß der Leitungskupplungskopf relativ weit gegen Federkraft rückverschieblich sein, um sicherzustellen, daß während Kupplungs- und Entkupplungsvorgängen der Leitungskupplungskopf von Teilen der Gegenkupplung nicht beschädigt wird. Aus der DE-OS 1 605 175 ist es zum Vermeiden derartiger Beschädigungen bekannt, den Leitungskupplungskopf nicht nur gegen Federkraft rückverschieblich, sondern zusätzlich zur Seite auslenkbar zu haltern. Zur pneumatischen Unterstützung, d.h. Belastung des Leistungskupplungskopfes nach vorne zum Erzielen einer dichtenden Pressung am Kupplungs-Dichtungsring zur Gegenleitungskupplung, mußten bei diesen federnd vornestehenden Leitungskupplungen langhubige Zylinder bzw. Kolbendichtungsführungen vorgesehen werden, was hinsichtlich Bauaufwand, Wartung und Beschädigungsgefahr ungünstig ist.Such a coupling is known from DE-OS 2 022 201. DE-OS 1 937 880 shows a similar coupling with a projecting, resiliently retractable line coupling head. In couplings of the type mentioned at the outset, the line coupling head must be able to be pushed back relatively far against spring force in order to ensure that the coupling head of parts of the counter-coupling does not during coupling and uncoupling operations is damaged. From DE-OS 1 605 175 it is known, in order to avoid such damage, not only to retract the line coupling head against spring force, but also to deflect it to the side. For pneumatic support, ie loading the power coupling head to the front to achieve a sealing pressure on the coupling sealing ring for the counter-line coupling, long-stroke cylinders or piston seal guides had to be provided for these spring-mounted line couplings, which in terms of construction costs, maintenance and Risk of damage is unfavorable.

Es sind auch bereits selbsttätige Kupplungen für Schienenfahrzeuge bekannt, welche abweichend zu den eingangs genannten Merkmalen keinen vornstehenden, elastisch rückdrückbaren Leitungskupplungskopf, sondern einen über ein Gestänge in Abhängigkeit vom Fehlen oder Vorhandensein einer Gegenkupplung in eine rückwärtige Ruhestellung bzw. eine vordere Kupplungsstellung beweglichen Leitungskupplungskopf aufweisen. Auch für derartige Kupplungen ist eine pneumatische Unterstützung des Leitungskupplungskopfes in dessen vorderer Kupplungsstellung bekannt, wobei durch Verwendung eines besonderen Antriebsgestänges gemäß der DE-OS 1 816 484, eines die Relativbeweglichkeit zweier dem Vorschubgetriebe des Leitungskupplungskopfes zugehörender Betätigungshebel vermindernden Überbrückungshebels gemäß Fig.4 der DE-OS 1 605 166 oder eines mit einem Vorschwenkhebel gekoppelten, durch Reibschluß den Leitungskupplungskopf gegen ein Rücklaufen sichernden Sperrhebels Kurzhubzylinder verwendbar sind. Diese bekannten Anordnungen sind jedoch nur bei Vorhandensein des vorstehend erwähnten, in Abhängigkeit von einer Gegenkupplung betätigbaren Vorschubgetriebes verwendbar, sie sind nicht auf Kupplungen der eingangs genannten Art mit vornstehendem, elastisch rückdrückbarem Leitungskupplungskopf übertragbar.There are also already known automatic couplings for rail vehicles which, in contrast to the features mentioned at the beginning, do not have a protruding, elastically push-back line coupling head, but rather a line coupling head that can be moved into a rear idle position or a front coupling position via a linkage depending on the absence or presence of a counter coupling. Pneumatic support of the line coupling head in its front coupling position is also known for such couplings, whereby by using a special drive linkage according to DE-OS 1 816 484, a bridging lever according to FIG. 4 of the line coupling head reducing the relative mobility of two feed levers of the line coupling head. OS 1 605 166 or a short-stroke cylinder coupled to a forward pivoting lever, which frictionally locks the line coupling head to prevent it from running back, can be used. However, these known arrangements can only be used in the presence of the above-mentioned feed gear, which can be actuated as a function of a mating clutch, and cannot be transferred to couplings of the type mentioned at the outset with the above, elastically push-back line coupling head.

Es ist Aufgabe der Erfindung, eine selbsttätige Kupplung der eingangs genannten Art, also mit vornstehendem, elastisch rückdrückbaren Leitungskupplungskopf, derart auszugestalten, daß bei einfachem Aufbau und betriebssicherer Funktion lediglich ein Kurzhubzylinder mit dessen Vorteilen für die pneumatische Unterstützung des Leitungskupplungskopfes in dessen Kupplungszustand erforderlich ist.It is an object of the invention to design an automatic coupling of the type mentioned at the outset, that is to say with a protruding, elastically push-back line coupling head in such a way that, with a simple construction and reliable operation, only a short-stroke cylinder with its advantages is required for the pneumatic support of the line coupling head in its coupling state.

Diese Aufgabe wird nach der Erfindung bei einer selbsttätigen Kupplung der eingangs genannten Art gelöst durch einen einen Zylinderkörper und einen Kolben aufweisenden Kurzhubzylinder, dessen eines Teil - Zylinderkörper oder Kolben - mit dem Leitungskupplungskopf gekoppelt ist, derart, daß dieses Teil bei Druckbeaufschlagung des Kurzhubzylinders eine nach vorne gerichtete Kraft auf den Leitungskupplungskopf ausübt, und dessen anderes Teil - Kolben oder Zylinderkörper - relativverschieblich zum Kupplungskopf und zum Leitungskupplungskopf gelagert ist, und des weiteren durch ein nur bei Druckbeaufschlagung des Kurzhubzylinders entgegen Federkraft eingerastetes Gesperre, welches zwischen dem anderen Teil und dem Kupplungskopf eingeordnet ist, und welches in seiner Einraststellung das andere Teil in einer Stellung relativ zum Kupplungskopf gegen eine Rückwärtsbewegung sperrt, in welcher Stellung das eine Teil bei gekuppeltem Leitungskupplungskopf sich nahe seiner vorderen Endstellung relativ zum anderen Teil befindet.This object is achieved according to the invention in an automatic clutch of the type mentioned by a short-stroke cylinder having a cylinder body and a piston, the one part - cylinder body or piston - is coupled to the line coupling head, such that this part exerts a forward force on the line coupling head when pressure is applied to the short-stroke cylinder, and the other part - piston or cylinder body - is mounted so as to be relatively displaceable to the coupling head and to the line coupling head, and further by a locking mechanism which is locked against spring force only when the short-stroke cylinder is pressurized and which is arranged between the other part and the coupling head and which in its latching position locks the other part in a position relative to the coupling head against backward movement, in which position the one Part when the line coupling head is coupled is near its front end position relative to the other part.

Nach der weiteren Erfindung vorteilhafte Ausgestaltungsmöglichkeiten einer derartig ausgebildeten Kupplung zeigen die Merkmale der Unteransprüche auf.According to the further invention, advantageous design options for a coupling designed in this way show the features of the subclaims.

In der Zeichnung ist ein Ausführungsbeispiel für eine nach der Erfindung ausgebildete Kupplung in ihren erfindungswesentlichen Teilen schematisch dargestellt, und zwar zeigt

Fig.1
die Kupplung im Entkupplungs- und
Fig.2
die Kupplung im Kupplungszustand.
In the drawing, an embodiment of a coupling designed according to the invention is shown schematically in its parts essential to the invention, and shows
Fig. 1
the clutch in the uncoupling and
Fig. 2
the clutch in the clutch state.

In den Figuren ist ein Leitungskupplungskopf 1 dargestgellt, welcher mit einen nach rückwärts auskragenden Leitungsrohr 2 versehen ist. Der Leitungskupplungskopf 1 mit Leitungsrohr 2 ist über nicht dargestellte Führungen in einem Kupplungskopf, vorzugsweise einen starrkuppelnden Willison-Kupplungskopf in Richtung der Längsachse 3 verschieblich gehaltert, eine ebenfalls nicht dargestellte Feder belastet ihn in Richtung des Pfeiles 4, d.h. in Verschieberichtung nach vorne. Die zu kuppelnde, nicht dargestellte Rohrleitung des Schienenfahrzeuges ist an das Leitungsrohr 2 vermittels einer abgedichteten Teleskopführung, eines Schlauchzwischenstückes oder dgl. beweglich angekoppelt. In beliebiger Richtung neben dem Leitungsrohr 2, vorzugsweise unterhalb des Leitungsrohres 2 befindet sich ein Kurzhubzylinder 5 mit einem Koben 6 und einem Zylinderkörper 7. Der Kolben 6 trägt eine nach vorne, in Richtung des Pfeiles 4 ragende Kolbenstange 8, deren Ende an einem am Leitungsrohr 2 festen Lagerbock 9 angelenkt ist. Rückseitig des Kolbens 6 befindet sich im Zylinderkörper 7 ein Zylinderraum 10, welcher über eine Schlauchleitung 11 aus dem Leitungsrohr 2 druckbeaufschlagbar ist. Von vorne ist der Kolben 6 von einer Rückdruckfeder 12 belastet. Der Zylinderkörper 7 ist in nicht dargestellter Weise parallel zur Längsachse 3 relativverschieblich zum Leitungsrohr 2 gelagert. An der dem Leitungsrohr 2 abgewandten Seite befindet sich am Zylinderkörper 7 ein nach vorne auskragender Lagerbock 13, an dessen Ende ein Winkelhebel 14 an seinem Scheitelpunkt drehbar angelenkt ist. An der Kolbenstange 8 befindet sich ein kurzer, in Richtung zum Lagerbock 13 auskragender Lagerbock 15, an welchem ein Schenkelende 16 des Winkelhebels 14 vermittels einer Koppelhebels 17 angelenkt ist. Die Anordnung ist derart getroffen, daß bei nahe seiner rückwärtigen Endstellung im Zylinderkörper 7 befindlichem Kolben 6, wie es in Fig.1 dargestellt ist, der Koppelhebel 17 sich vom Lagerbock 15 etwa parallel zur Längsachse 3 nach vorne erstreckt, der das Schenkelende 16 aufweisende Schenkel des Winkelhebels 14 sich von der Anlenkung des Winkelhebels 14 am Lagerbock 13 etwa rechtwinklig zum Leitungsrohr 2 hin erstreckt, und der andere Schenkel 18 des Winkelhebels 14 sich etwa parallel zur Längsachse 3 nach vorner erstreckt. Eine Gehäusewandung 19 des im übrigen nicht dargestellten Kupplungskopfes, welche sich dem Leitungsrohr 2 abgewandt seitlich etwa neben dem Lagerbock 13 befindet, weist eine nach vorne gerichtete Anschlagfläche 20 auf, gegen welche sich der Schenkel 18 bei Linksdrehen des Winkelhebels 14, ausgehend von Fig.1, von vorne anzulegen vermag.In the figures, a line coupling head 1 is shown, which is provided with a rearward projecting line pipe 2. The line coupling head 1 with line pipe 2 is slidably supported in a coupling head, preferably a rigidly coupling Willison coupling head in the direction of the longitudinal axis 3, a spring, also not shown, loads it in the direction of the arrow 4, ie in the direction of displacement forward. The pipe to be coupled, not shown, of the rail vehicle is connected to the pipe 2 by means of a sealed telescopic guide, a hose adapter or the like. movably coupled. In any direction next to the conduit 2, preferably below the conduit 2, there is a short-stroke cylinder 5 with a piston 6 and a cylinder body 7. The piston 6 carries a piston rod 8 projecting forward in the direction of the arrow 4, the end of which is connected to a on the conduit 2 fixed bearing block 9 is articulated. On the rear side of the piston 6 there is a cylinder space 10 in the cylinder body 7, which can be pressurized from the conduit 2 via a hose 11. The piston 6 is loaded from the front by a back pressure spring 12. The cylinder body 7 is mounted in a manner not shown parallel to the longitudinal axis 3 relative to the conduit 2. On the side facing away from the conduit 2 there is on the cylinder body 7 a cantilevered pedestal 13, at the end of which an angle lever 14 is pivoted at its apex. On the piston rod 8 there is a short bearing bracket 15 which projects in the direction of the bearing block 13 and on which one leg end 16 of the angle lever 14 is articulated by means of a coupling lever 17. The arrangement is such that, when the piston 6 is located near its rear end position in the cylinder body 7, as shown in FIG. 1, the coupling lever 17 extends from the bearing block 15 approximately parallel to the longitudinal axis 3, which has the leg end 16 of the angle lever 14 extends from the articulation of the angle lever 14 on the bracket 13 approximately at right angles to the conduit 2, and the other leg 18 of the angle lever 14 extends approximately parallel to the longitudinal axis 3 to the front. A housing wall 19 of the coupling head, which is not shown in the rest, which is located away from the conduit 2 laterally approximately next to the bearing block 13, has a forward-facing stop surface 20 against which the leg 18 is turned when the angle lever 14 is turned to the left, starting from FIG. 1 , can create from the front.

Im ungekuppelten Zustand bei drucklosem Leitungsrohr 2 und demgemäß drucklosem Zylinderraum 10 nehmen die Teile der Kupplung die aus Fig.1 ersichtlichen, vorstehend beschriebenen Lagen ein, der Leitungskupplungskopf 1 mitsamt den Leitungsrohr 2, der Kolbenstange 8, dem Kurzhubzylinder 5 und dem Winkelhebel 14 ist gegen die erwähnte, nicht dargestellte Feder relativ zum Kupplungskopf, also auch zur Gehäusewandung 19 mit Anschlagfläche 20, rückverschieblich.In the uncoupled state with line pipe 2 depressurized and accordingly Unpressurized cylinder space 10, the parts of the clutch assume the positions described above in FIG. 1, the line coupling head 1 together with the line pipe 2, the piston rod 8, the short-stroke cylinder 5 and the angle lever 14 is against the spring, not shown, relative to the coupling head , ie also to the housing wall 19 with stop surface 20, can be moved back.

Beim Kupplungsvorgang, in dessen Anfangsphasen der Leitungskupplungskopf 1 durch Teile der Gegenkupplung zurückgedrückt worden sein und federnd wieder sich vorbewegt haben kann, wird bei am nicht dargestellten Gegenleitungskupplungskopf bereits unter seiner Federbelastung anliegenden Leitungskunpplungskopf 1 das Leitungsrohr 2 und damit der Zylinderraum 10 druckmittelbeaufschlagt. Durch die dabei auftretende Relativverschiebung zwischen Zylinderkörper 7 und Kolben 6 wird die Kolbenstange 8 nach vorne ausgefahren, wobei über den Koppelhebel 17 der Winkelhebel 14 um ca. 90° nach links gedreht wird. Der Schenkel 18 des Winkelhebels 14 gelangt dabei nach anfänglicher, geringer Rückverschiebung des Zylinderkörpers 7 relativ zum Kupplungskopf von vorne in Anlage an die Anschlagfläche 20 und hindert über den Lagerbock 13 den Zylinderkörper 7 an einer weiteren Verschiebung relativ zum Kupplungskopf nach rückwärts. Der Kolben 6 drückt unter seiner Druckmittelbeaufschlagung aus dem Zylinderraum 10 über die Kolbenstange 8 und den Lagerbock 9 das Leitungsrohr 2 und damit den Leitungskupplungskopf 1 nach vorne und somit fest gegen den nicht dargestellten Gegenleitungskupplungskopf an, wodurch die ebenfalls nicht dargestellten Leitungskupplungsringe fest und damit dicht gegeneinander angedrückt werden. Die Teile der Kupplung befinden sich hierbei in der aus Fig.2 ersichtlichen Lage, wobei sich der Kolben 6 im Zylinerkörper 7 nahe seiner vorderen Endstellung befindet.During the coupling process, in the initial phases of which the line coupling head 1 may have been pushed back by parts of the mating coupling and may have moved forward again resiliently, the line pipe 2 and thus the cylinder space 10 are pressurized with the line coupling head 1 already lying under its spring load on the mating coupling head. Due to the relative displacement that occurs between the cylinder body 7 and the piston 6, the piston rod 8 is extended to the front, the angle lever 14 being rotated about 90 ° to the left via the coupling lever 17. The leg 18 of the angle lever 14 comes after initial, slight backward displacement of the cylinder body 7 relative to the coupling head from the front into contact with the stop surface 20 and prevents the cylinder body 7 from further displacement relative to the coupling head backwards via the bearing block 13. The piston 6 presses under its pressure medium from the cylinder space 10 via the piston rod 8 and the bearing block 9, the conduit 2 and thus the line coupling head 1 to the front and thus firmly against the opposite line coupling head, not shown, whereby the line coupling rings, also not shown, firmly and thus tightly against each other be pressed. The parts of the clutch are in the position shown in FIG. 2, the piston 6 being located in the cylinder body 7 near its front end position.

In Abänderung zu vorstehend beschriebenen und dargestellten Ausführungsbeispiel ist es möglich, anstelle des Lagerbockes 15 einen Ansatz an der Kolbenstange 8 anzuordnen, der mit einer parallel zur Längsachse verlaufenden Anschlagfläche ähnlich der Fläche 21 des Lagerbockes 15 (s. Fig.2) ausgestattet ist; der Koppelhebel 17 entfällt bei dieser Ausführung. Die Anordnung ist dabei derart getroffen, daß, ähnlich zum Lagerbock 15, der Ansatz sich bei drucklosem Kurzhubzylinder 5 entsprechend Fig.1 nach rückwärts versetzt hinter dem rechtwinklig in Richtung zum Leitungsrohr 2 auskragenden Schenkelende 16 befindet; bei Druckmittelbeaufschlagung des Kurzhubzylinders 5 und sich relativ zum Winkelhebel 14 vorverschiebenden Ansatz läuft dieser gegen das Schenkelende 16 an, dreht hierdurch den Winkelhebel 14 in die Aus Fig.2 ersichtliche Lage mit Abstützung gegen die Anschlagfläche 20 und verbleibt sodann mit seiner Anschlagfläche 21 dicht vor dem leitungsrohrseitigen Schenkelende 16, wodurch ein Rückdrehen des Winkelhebels 14 formschlüssig ausgeschlossen ist.In a modification of the exemplary embodiment described and illustrated above, it is possible to arrange an attachment on the piston rod 8 instead of the bearing block 15, which is provided with a is provided parallel to the longitudinal axis of the stop surface similar to the surface 21 of the bearing block 15 (see Fig.2); the coupling lever 17 is omitted in this embodiment. The arrangement is such that, similar to the pedestal 15, the approach is in a depressurized short-stroke cylinder 5 according to Fig.1 offset backwards behind the leg end 16 projecting at right angles to the conduit 2; when pressure medium is applied to the short-stroke cylinder 5 and the shoulder 14 moves forward relative to the angle lever 14, it runs against the leg end 16, thereby rotating the angle lever 14 into the position shown in FIG. 2 with support against the stop surface 20 and then remaining with its stop surface 21 close to the Leg end 16 on the line pipe side, whereby a turning back of the angle lever 14 is positively excluded.

Eine andere Abänderungsmöglichkeit besteht darin, den Kolben und den Zylinderkörper des Kurzhubzylinders hinsichtlich ihrer Anlenkungen und Koppelungen mit dem Leitungsrohr 2 bzw. dem Winkelhebel 14 zu vertauschen. Bei dieser Ausführung ist es möglich, den Zylinderkörper 7 fest mit dem Leitungsrohr 2 zu verbinden, so daß anstelle der Schlauchleitung 11 eine kurze, feste Rohrverbindung vom Leitungsrohr 2 zum Zylinderraum 10 vorgesehen werden kann.Another possible modification is to interchange the piston and the cylinder body of the short-stroke cylinder with respect to their articulations and couplings with the conduit 2 or the angle lever 14. In this embodiment, it is possible to firmly connect the cylinder body 7 to the conduit 2, so that instead of the hose 11, a short, solid pipe connection from the conduit 2 to the cylinder space 10 can be provided.

In einer weiteren Abänderung zum Ausführungsbeispiel kann der Kurzhubzylinder als Membranzylinder ausgebildet sein.In a further modification to the exemplary embodiment, the short-stroke cylinder can be designed as a membrane cylinder.

Bei allen Ausführungsformen der Kupplung ist wesentlich, daß im gekuppelten Zustand der Leitungskupplung der Leitungskupplungskopf entgegen der pneumatischen Belastung durch den Kurzhubzylinder elastisch rückdrückbar ist, daß also nur ein nichtstarr mit dem Leitungskupplungskopf gekoppeltes Teil des Kurzhubzylinders gegen Rückverschiebung gesperrt ist. Hierdurch werden Beschädigungen des Leitungskupplungskopfes vermieden.In all embodiments of the coupling it is essential that in the coupled state of the line coupling the line coupling head can be elastically pushed back against the pneumatic load by the short stroke cylinder, that is to say that only a part of the short stroke cylinder which is not rigidly coupled to the line coupling head is locked against displacement. This prevents damage to the line coupling head.

Der Ausdruck "vorne" und die Richtung des Pfeiles 4 bzw. der Längsachse 3 sind vorstehend auf die Leitungskupplung bezogen, d.h., ihre Richtungen können von der Kupplungslängsachse und der auf den Kupplungskopf bezogenen nach-vorne-Richtung beachtlich abweichen: Bei Willison-Kupplungsköpfen kann die Längsachse 3, bezogen auf die Kupplungslängsachse dieses Willison-Kupplungskopfes, beispielsweise um ca. 30° zur Seite geschwenkt verlaufen.The expression "front" and the direction of the arrow 4 or the longitudinal axis 3 refer above to the line coupling, ie their directions can deviate considerably from the longitudinal axis of the coupling and the forward direction related to the coupling head: With Willison coupling heads, the longitudinal axis 3, based on the longitudinal axis of this Willison coupling head, is pivoted to the side, for example by approximately 30 °.

Kurzfassung:Short version:

Die selbsttätige Kupplung für Schienenfahrzeuge weist einen vornstehenden, federnd rückdrückbaren Leitungskupplungskopf 1 auf. Zur pneumatischen Dichtungsunterstützung der Leitungskupplung ist ein Kurzhubzylinder 5 vorgesehen, dessen Kolben 6 am Leitungskupplungskopf 1 angelenkt und dessen Zylinderkörper 7 relativverschieblich zum Leitungskupplungskopf 1 gehaltert ist. Bei Druckbeaufschlagung des Kurzhubzylinders 5 wird durch die Relativverschiebung von Kolbenstange 8 und Zylinderkörper 7 ein am Zylinderkörper 7 drehbar gelagerter Winkelhebel 14 derart gedreht, daß sich sein einer Schenkel 18 von vorne gegen eine Anschlagfläche 20 des Kupplungskopfes anlegt und somit den Zylinderkörper 7 gegen eine Rückwärtsverschiebung sperrt. Die aus der Druckmittelbeaufschlagung des Kolbens 6 resultierende Kraft wird sodann als nach vorne gerichtete Kraft auf dem Leitungskupplungskopf 1 übertragen, wodurch die Pressung und damit Dichtung dessen Kupplungsdichtungsringes zum Gegenleitungskupplungskopf unterstützt wird.The automatic coupling for rail vehicles has a protruding, spring-returnable line coupling head 1. A short-stroke cylinder 5 is provided for pneumatic sealing support of the line coupling, the piston 6 of which is articulated on the line coupling head 1 and the cylinder body 7 of which is held relative to the line coupling head 1. When the short-stroke cylinder 5 is pressurized, the relative displacement of the piston rod 8 and the cylinder body 7 rotates an angle lever 14 which is rotatably mounted on the cylinder body 7 such that its one leg 18 bears against a stop face 20 of the coupling head from the front and thus locks the cylinder body 7 against backward displacement . The force resulting from the pressure medium acting on the piston 6 is then transmitted as a forward-facing force on the line coupling head 1, whereby the pressing and thus sealing of its coupling sealing ring to the countercurrent coupling head is supported.

BezugszeichenlisteReference list

11
LeitungskupplungskopfLine coupling head
22nd
LeitungsrohrConduit
33rd
LängsachseLongitudinal axis
44th
Pfeilarrow
55
KurzhubzylinderShort stroke cylinder
66
Kolbenpiston
77
ZylinderkörperCylinder body
88th
KolbenstangePiston rod
99
LagerbockBearing block
1010th
ZylinderraumCylinder space
1111
SchlauchleitungHose line
1212th
RückdruckfederBack pressure spring
1313
LagerbockBearing block
1414
WinkelhebelAngle lever
1515
LagerbockBearing block
1616
SchenkelendeThigh end
1717th
KoppelhebelCoupling lever
1818th
Schenkelleg
1919th
GehäusewandungHousing wall
2020th
AnschlagflächeAbutment surface
2121
AnschlagflächeAbutment surface

Claims (9)

  1. Automatic coupling for rail vehicles, having a coupling head constructed in particular as a rigid-coupling Willison coupling head and having a line coupling with front-located resiliently returnable line coupling head (1) which in the coupling state is pneumatically forwardly loaded in the pressing direction against a counter line coupling head, characterised by a short-stroke cylinder (5) having a cylinder body (7) and a piston (6), one part of the short-stroke cylinder - cylinder body or piston (6) - being coupled to the line coupling head (1) in such a way that when pressure is exerted on the short-stroke cylinder (5) this part (piston 6) exerts a forwardly directed force on the line coupling head (1), and the other part of the short-stroke cylinder - piston or cylinder body (7) being mounted relatively movably with respect to the coupling head and to the line coupling head (1), and furthermore characterised by a locking mechanism (arm 18, stop surface 20) engaged only when pressure is exerted on the short-stroke cylinder (5) against spring force (return spring 12), which locking mechanism is arranged between the other part (7) and the coupling head, and which in its engagement position locks the other part (7) in a position relative to the coupling head against a backwards movement, in which position the one part (6) is near its front end position relatively to the other part (7) when the line coupling head (1) is coupled.
  2. Coupling according to claim 1, characterised in that the locking mechanism (18, 20) is secured in form-fitting manner in its engagement position.
  3. Coupling according to claim 2, characterised in that the locking mechanism securing means is constructed as a stop (stop surface 21) or a coupling rod (17).
  4. Coupling according to one or more of claims 1 to 3, characterised in that the one part (piston 6) of the short-stroke cylinder (5) arranged parallel to the longitudinal axis (3) of the line coupling is hinged indirectly or directly on the line coupling head (1), extending backwards from it, in that one arm end (16) of a bell crank (14) is rotatably coupled to this one part (6), in that the bell crank (14) is rotatably hinged approximately at its apex on the other part (cylinder body 7) of the short-stroke cylinder (5) in such a way that with respect to this other part (7) when the one part (6) is in its rear position the free arm (18) of the bell crank (14) extends forwards approximately parallel to the longitudinal axis (3) of the line coupling, and when the one part (6) is in its front end position this free arm extends approximately at right angles from the line coupling, and in that on the coupling head a stop surface (20) is arranged on which the free arm (18) abuts from the front during the rotary movement from its forwardly-projecting position to the position jutting out at right angles.
  5. Coupling according to claim 1 to 4, characterised in that on the one part (piston 6) of the short-stroke cylinder (5) a projection jutting out at right angles to the longitudinal axis (3) is arranged and with a stop surface (21) extending parallel to the longitudinal axis reaches over the one arm end (16) only when the other arm is projecting approximately at right angles, abutting the stop surface (20) of the coupling head, securing the bell crank (14) against return rotation.
  6. Coupling according to claims 1 to 4, characterised in that the arm end (16) of the bell crank (14) is hinged by means of a coupling lever (17) on one part (piston 6) of the short-stroke cylinder (5), the coupling lever (17) extending backwards from the arm end (16) approximately parallel to the longitudinal axis (3) when the one part (6) is in the rear end position, and extending approximately at right angles to the longitudinal axis (3) when the one part (6) is in the front end position.
  7. Coupling according to one or more of the preceding claims 1 to 6, characterised in that on the short-stroke cylinder (5) the one part is the piston (6) and the other part is the cylinder body (7).
  8. Coupling according to one or more of the preceding claims 1 to 6, characterised in that on the short-stroke cylinder (5) the one part is the cylinder body and the other part is the piston.
  9. Coupling according to one or more of the preceding claims, characterised in that the short-stroke cylinder (5) is constructed as a diaphragm cylinder with a diaphragm piston.
EP92102429A 1991-02-28 1992-02-13 Automatic coupling for railway vehicles Expired - Lifetime EP0501244B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4106421A DE4106421A1 (en) 1991-02-28 1991-02-28 AUTOMATIC CLUTCH FOR RAIL VEHICLES
DE4106421 1991-02-28

Publications (2)

Publication Number Publication Date
EP0501244A1 EP0501244A1 (en) 1992-09-02
EP0501244B1 true EP0501244B1 (en) 1994-08-31

Family

ID=6426164

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92102429A Expired - Lifetime EP0501244B1 (en) 1991-02-28 1992-02-13 Automatic coupling for railway vehicles

Country Status (3)

Country Link
EP (1) EP0501244B1 (en)
AT (1) ATE110660T1 (en)
DE (2) DE4106421A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19932469C2 (en) * 1999-07-12 2001-05-17 Knorr Bremse Systeme Device for realizing an electrical plug connection

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1169482B (en) * 1960-01-29 1964-05-06 Knorr Bremse Kg Pipeline coupling for automatic central buffer couplings of the Willison type on rail vehicles
DE1455283A1 (en) * 1963-10-01 1970-02-19 Berliner Bremsenwerk Veb Pneumatically controlled line coupling for rail vehicles

Also Published As

Publication number Publication date
DE4106421A1 (en) 1992-09-03
EP0501244A1 (en) 1992-09-02
DE59200422D1 (en) 1994-10-06
ATE110660T1 (en) 1994-09-15

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