[go: up one dir, main page]

EP0489306A1 - Piston-cylinder combination for generating and transmitting pressure forces - Google Patents

Piston-cylinder combination for generating and transmitting pressure forces Download PDF

Info

Publication number
EP0489306A1
EP0489306A1 EP91119809A EP91119809A EP0489306A1 EP 0489306 A1 EP0489306 A1 EP 0489306A1 EP 91119809 A EP91119809 A EP 91119809A EP 91119809 A EP91119809 A EP 91119809A EP 0489306 A1 EP0489306 A1 EP 0489306A1
Authority
EP
European Patent Office
Prior art keywords
piston
pressure
pot
cylinder unit
pot piston
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.)
Granted
Application number
EP91119809A
Other languages
German (de)
French (fr)
Other versions
EP0489306B1 (en
Inventor
Karl Heinrich Sonnabend
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.)
SMS Siemag AG
Original Assignee
SMS Schloemann Siemag AG
Schloemann Siemag AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SMS Schloemann Siemag AG, Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Priority to AT91119809T priority Critical patent/ATE103211T1/en
Publication of EP0489306A1 publication Critical patent/EP0489306A1/en
Application granted granted Critical
Publication of EP0489306B1 publication Critical patent/EP0489306B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B21B31/32—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis by liquid pressure, e.g. hydromechanical adjusting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B21B31/203—Balancing rolls

Definitions

  • the invention relates to a piston-cylinder unit for generating and transmitting pressure forces to linearly displaceably guided actuating elements with a pressure tappet mounted in a pot piston that is open on one side and can be pivoted transversely to the pressure direction.
  • Piston-cylinder units of this type are used, in particular in heavy engineering, to apply a controllable pressure to flat stop surfaces of actuating elements that can be displaced in sliding guides, or to counteract a pressure on these elements.
  • the pressure tappets of the piston-cylinder units act on the respective contact surface of the control element without being coupled to it.
  • Piston-cylinder units of this type are arranged between the bearing chocks of roll stands with one or more pairs of rollers in order to support the bearing chocks of a pair of rollers against one another under pressure control or else to apply pressure, e.g. apply a bending pressure to partially deform the rollers on their ends.
  • the pendulum mounting of the pressure tappet in the pot piston of the generic piston-cylinder units takes into account the fact that the pressure tappet acted actuators often perform more or less strong movements transverse to the direction of pressure in practical operation, which are due, for example, to inevitable tolerances in the sliding guides of the actuators.
  • the pressure tappet absorbs the short transverse movements without changing the pressure contact between the pressure tappet and the contact surface of the actuating elements with a pendulum movement in the pot piston.
  • the pressure tappet with its spherically shaped lower end face stands on a spherical cap arranged in the base part of the pot piston.
  • the possible pendulum deflection angle of the pressure tappet is narrowly limited by the inner wall of the pot piston, into which it is inserted with a slight play, and an annular seal applied to the pot piston rim, in order to ensure that the pressure tappet returns to the original after the pressure transfer to the actuating elements has ended Centering position returns within the pot piston and is not in an inclined position at the start of a new loading movement.
  • the invention has for its object to improve the generic piston-cylinder units so that significantly larger pendulum deflections of the pressure tappet are made possible without damage to the seal occurring and the pressure tappet continues to be returned to its centering position after completion of the pressure transmission.
  • This form of training allows the pressure tappet to be dimensioned such that it is able to exercise considerably larger pendulum deflections within the pot piston, and that when the pressure transfer to the actuating elements of the pressure tappet is ended, the spring elements move it back into the starting centering position.
  • the sealing lugs can consist of conical surfaces arranged in the inner wall of the pot piston and on the outer circumference of the pressure tappet, which run in the pot piston on a conical ring which can be inserted and axially fixed therein and on the pressure tappet in a neck-shaped ring incision.
  • the pressure tappet 1 stands with its crowned lower end face 1 a on a spherical cap 2 a, which is part of a floating piston 2.
  • This floating piston 2 is guided in the pot piston 3, which consists of the piston part 3a and the pot extension 3b.
  • the piston part 3a of the pot piston 3 is guided in the cylinder 4, which has a pressure medium supply opening 4a below the piston part 3a and is closed by the piston cover 5.
  • the floating piston 2 On the end facing away from the spherical cap 2a, the floating piston 2 has a guide pin 6, which is enclosed by a spring assembly 7, which is arranged in a bottom recess 3c of the piston part 3a.
  • the guide pin 6 is only used to center the plate springs.
  • the pressure tappet 1 has a neck-shaped ring cutout 1b with a conical surface 1c, which in the position shown of the pressure tappet 1 rests on the conical surface of the conical ring 8.
  • the plunger 1 is in this position in its starting position with respect to the adjusting element indicated by 14 and its slightly curved pressure face 1d is at a distance from its flat stop surface 14a.
  • the Pressure plunger 1 held under the pressure of the spring assembly 7 by the conical surfaces of the conical ring 8 in the centering position and axially locked.
  • the pot piston 3 moves upward in the direction of the arrow A when a pressure medium is supplied through the pressure medium supply opening 4a and takes the pressure tappet 1 with it, without this, or the floating piston 2, its relative position to the pot piston 3 changes.
  • a two-part sealing ring sleeve 10 is arranged above the cone ring 8 in the opening area of the pot extension 3b of the pot piston 3.
  • This sealing ring sleeve 10 consists of a lower groove ring 10a, which rests on the conical ring 8 or a securing ring 15 inserted above it, and a sealing ring 10b guided in the groove thereof.
  • An elastic intermediate ring 11 is inserted into the groove between the two rings 10a and 10b.
  • the head 1e of the pressure tappet 1 comprises a counter-sealing ring 12, which is likewise formed from two rings 12a and 12b which are separated from one another by an elastic intermediate ring 13.
  • this counter-sealing ring 12 is substantially larger than that of the sealing ring 10b of the sealing ring sleeve 10.
  • the lower one lies Ring 12b of the counter-sealing ring 12 with a flat radial plate surface pointing downward on the upper ring face of the sealing ring 10b of the sealing ring sleeve 10 and thus covers the upper opening of the pot piston 3 in a sealing manner.
  • the pot piston is secured in this way in every position of the pressure ram 1 against the ingress of dirt.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Actuator (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Eye Examination Apparatus (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

A piston-cylinder unit for producing and transmitting compressive forces onto adjusting elements which are guided so as to be slidable on a straight line. The piston-cylinder unit includes a push rod mounted so as to be capable of oscillating transversely of the direction of the compressive forces in a unilaterally open skirt-type piston. The push rod is slidingly movable from a centered position into an oscillating position. The centered position is determined by sealing members placed so as to face each other and mounted at an outer periphery of the push rod and an inner rim of the skirt-type piston. The push rod is movable into the skirt-type piston toward a fixed stop arranged in the skirt-type piston. The push rod is movable against the force of a spring element arranged at the bottom of the skirt-type piston.

Description

Die Erfindung bezieht sich auf ein Kolben-Zylinder-Aggregat zur Erzeugung und Übertragung von Druckkräften auf geradlinig verschiebbar geführte Stellelemente mit einem, in einem einseitig offenen Topfkolben, quer zur Druckrichtung pendelbar gelagerten Druckstößel.The invention relates to a piston-cylinder unit for generating and transmitting pressure forces to linearly displaceably guided actuating elements with a pressure tappet mounted in a pot piston that is open on one side and can be pivoted transversely to the pressure direction.

Kolben-Zylinder-Aggregate dieser Art werden, insb. im Schwermaschinenbau dazu verwendet, auf ebene Anschlagflächen von in Gleitführungen verschiebbaren Stellelementen einen steuerbaren Druck aufzubringen oder einem auf diesen Elementen lastenden Druck entlastend entgegenzuwirken. Die Druckstößel der Kolben-Zylinder-Aggregate beaufschlagen dabei die jeweilige Anlagefläche des Stellelementes, ohne mit diesem gekuppelt zu sein. So werden z.B. Kolben-Zylinder-Aggregate dieser Art zwischen den Lagereinbaustücken von Walzgerüsten mit einem oder mehreren Walzenpaaren angeordnet, um die Lagereinbaustücke eines Walzenpaares, druckgesteuert gegeneinander abzustützen oder auch einen Druck, z.B. einen Biegedruck, zur partiellen Verformung der Walzen auf deren Enden aufzubringen.Piston-cylinder units of this type are used, in particular in heavy engineering, to apply a controllable pressure to flat stop surfaces of actuating elements that can be displaced in sliding guides, or to counteract a pressure on these elements. The pressure tappets of the piston-cylinder units act on the respective contact surface of the control element without being coupled to it. For example, Piston-cylinder units of this type are arranged between the bearing chocks of roll stands with one or more pairs of rollers in order to support the bearing chocks of a pair of rollers against one another under pressure control or else to apply pressure, e.g. apply a bending pressure to partially deform the rollers on their ends.

Die pendelbare Lagerung der Druckstößel im Topfkolben der gattungsgemäßen Kolben-Zylinder-Aggregate trägt dabei dem Umstand Rechnung, daß die von dem Druckstößel beaufschlagten Stellelemente im praktischen Betrieb häufig auch mehr oder weniger starke Bewegungen quer zur Druckrichtung ausführen, die z.B. auf unvermeidliche Toleranzen in den Gleitführungen der Stellelemente zurückzuführen sind. Der Druckstößel nimmt dabei die kurzen Querbewegungen ohne Veränderung des Druckkontaktes zwischen Druckstößel und Anlagefläche der Stellelemente mit einer Pendelbewegung im Topfkolben auf.The pendulum mounting of the pressure tappet in the pot piston of the generic piston-cylinder units takes into account the fact that the pressure tappet acted actuators often perform more or less strong movements transverse to the direction of pressure in practical operation, which are due, for example, to inevitable tolerances in the sliding guides of the actuators. The pressure tappet absorbs the short transverse movements without changing the pressure contact between the pressure tappet and the contact surface of the actuating elements with a pendulum movement in the pot piston.

Bei einer bekannten Ausbildungsform der gattungsgemäßen Kolben-Zylinder-Aggregate für die Druckbeaufschlagung von Lagereinbaustücken von Walzwerkswalzen steht der Druckstößel mit seiner ballig geformten unteren Stirnfläche auf einer im Bodenteil des Topfkolbens angeordneten Kugelkalotte auf. Der mögliche Pendelausschlagswinkel des Druckstößels wird dabei durch die Innenwandung des Topfkolbens, in den er mit leichtem Spiel eingesetzt ist, und eine, auf den Topfkolbenrand aufgebrachte Ringdichtung eng begrenzt, um sicherzustellen, daß der Druckstößel nach Beendigung der Druckübertragung auf die Stellelemente wieder in die ursprüngliche Zentrierposition innerhalb des Topfkolbens zurückkehrt und sich nicht bei Beginn einer neuen Beaufschlagungsbewegung in einer Schrägstellung befindet.In a known embodiment of the generic piston-cylinder units for pressurizing bearing chocks of rolling mill rolls, the pressure tappet with its spherically shaped lower end face stands on a spherical cap arranged in the base part of the pot piston. The possible pendulum deflection angle of the pressure tappet is narrowly limited by the inner wall of the pot piston, into which it is inserted with a slight play, and an annular seal applied to the pot piston rim, in order to ensure that the pressure tappet returns to the original after the pressure transfer to the actuating elements has ended Centering position returns within the pot piston and is not in an inclined position at the start of a new loading movement.

Es hat sich gezeigt, daß diese Ausbildungsform des Kolben-Zylinder-Aggregates nicht geeignet ist, größere Querbewegungsausschläge der Stellelemente, wie sie z.B. infolge von im Dauerbetrieb ausgeschlagenen Gleitführungen der Stellelemente verursacht werden können, aufzunehmen, und daß schon bei nur leichter Vergrößerung der Pendelausschläge die Ringdichtungen über ihre Elastizitätsgrenze hinaus überdrückt und dadurch beschädigt werden.It has been shown that this design of the piston-cylinder unit is not suitable to accommodate larger transverse movement deflections of the actuating elements, as can be caused, for example, by sliding guides of the actuating elements which are worn out in continuous operation, and that even with only a slight increase in the pendulum deflections Ring seals are pushed beyond their elastic limit and damaged as a result.

Der Erfindung liegt die Aufgabe zugrunde, die gattungsgemäßen Kolben-Zylinder-Aggregate so zu verbessern, daß erheblich größere Pendelausschläge des Druckstößels möglich gemacht werden, ohne daß hierbei Beschädigungen der Abdichtung auftreten und der Druckstößel auch weiterhin nach Beendigung der Druckübertragung in seine Zentrierstellung zurückgeführt wird.The invention has for its object to improve the generic piston-cylinder units so that significantly larger pendulum deflections of the pressure tappet are made possible without damage to the seal occurring and the pressure tappet continues to be returned to its centering position after completion of the pressure transmission.

Diese Aufgabe wird dadurch gelöst, daß der Druckstößel aus einer, durch aufeinanderliegende Dichtansätze an der Außenwand des Druckstößels und am Innenrand des Topfkolbens bestimmten Zentrierposition entgegen der Wirkung eines am Boden des Topfkolbens angeordneten Federelementes in den Topfkolben hinein, gegen einen in diesem angeordneten Festanschlag in Pendelposition gleitverschiebbar ist.This object is achieved in that the pressure tappet from a centering position determined by superimposed sealing lugs on the outer wall of the pressure tappet and on the inner edge of the pot piston against the action of a spring element arranged on the bottom of the pot piston into the pot piston, against a fixed stop arranged therein in the pendulum position is slidable.

Diese Ausbildungsform erlaubt es, den Druckstößel so zu bemessen, daß dieser innerhalb des Topfkolbens erheblich größere Pendelausschläge auszuüben vermag, und daß bei Beendigung der Druckübertragung auf die Stellelemente der Druckstößel durch die Federelemente wieder in die Ausgangs-Zentrierposition zurückbewegt wird.This form of training allows the pressure tappet to be dimensioned such that it is able to exercise considerably larger pendulum deflections within the pot piston, and that when the pressure transfer to the actuating elements of the pressure tappet is ended, the spring elements move it back into the starting centering position.

Wie die Erfindung weiter vorsieht, können die Dichtansätze aus in der Innenwandung des Topfkolbens und auf dem Außenumfang des Druckstößels angeordneten Konusflächen bestehen, die im Topfkolben auf einem, in diesen einschiebbaren und axial festlegbaren Konus-Ring und am Druckstößel in einem halsförmigen Ringeinschnitt verlaufen.As the invention further provides, the sealing lugs can consist of conical surfaces arranged in the inner wall of the pot piston and on the outer circumference of the pressure tappet, which run in the pot piston on a conical ring which can be inserted and axially fixed therein and on the pressure tappet in a neck-shaped ring incision.

Weitere Ausbildungsformen der erfindungsgemäßen Kolben-Zylinder-Aggregate sind in zusätzlichen Unteransprüchen niedergelegt.Further forms of training of the piston-cylinder units according to the invention are laid down in additional subclaims.

Die Erfindung wird anhand des in der Zeichnung dargestellten Ausführungsbeispiels erläutert. In der Zeichnung zeigen

Fig. 1 bis 4
das Kolben-Zylinder-Aggregat im Axialschnitt in verschiedenen Arbeitsstellungen und
Fig. 5
eine andere Ausbildung des Kolben-Zylinder-Aggregats nach den Fig. 1 b is 4.
The invention is explained with reference to the embodiment shown in the drawing. Show in the drawing
1 to 4
the piston-cylinder unit in axial section in various working positions and
Fig. 5
another embodiment of the piston-cylinder unit according to FIGS. 1 b to 4.

Wie aus Fig. 1 zu ersehen, steht der Druckstößel 1 mit seiner balligen unteren Stirnfläche 1a auf einer Kugelkalotte 2a auf, die Teil eines schwimmenden Kolbens 2 ist. Dieser schwimmende Kolben 2 ist in dem Topfkolben 3 geführt, der aus dem Kolbenteil 3a und dem Topfansatz 3b besteht. Der Kolbenteil 3a des Topfkolbens 3 ist im Zylinder 4 geführt, der unterhalb des Kolbenteils 3a eine Druckmittelzuführöffnung 4a aufweist und durch den Kolbendeckel 5 verschlossen ist. An der der Kugelkalotte 2a abgewandten Stirnseite weist der schwimmende Kolben 2 einen Führungsstift 6 auf, der von einem Federpaket 7 umschlossen wird, das in einer Bodenausnehmung 3c des Kolbenteils 3a angeordnet ist. Der Führungsstift 6 dient nur zur Zentrierung der Tellerfedern. Im oberen Bereich des Topfansatzes 3b des Topfkolbens 3 ist in diesen ein mit einem Sicherungsring 9 axial gegen Verschieben gesicherter Konusring 8 eingesetzt. Der Druckstößel 1 weist einen halsförmigen Ringausschnitt 1b mit einer Konusfläche 1c auf, die in der dargestellten Position des Druckstößels 1 auf der Konusfläche des Konusrings 8 aufliegt. Der Druckstößel 1 befindet sich in dieser Position in seiner Ausgangsstellung gegenüber dem mit 14 angedeuteten Stellelement und seine leicht gewölbte Druckstirn 1d befindet sich mit Abstand gegenüber dessen ebener Anschlagfläche 14a. Wie ersichtlich, wird der Druckstößel 1 unter dem Druck des Federpaketes 7 durch die Konusflächen des Konusrings 8 in Zentrierposition gehalten und axial arretiert.As can be seen from FIG. 1, the pressure tappet 1 stands with its crowned lower end face 1 a on a spherical cap 2 a, which is part of a floating piston 2. This floating piston 2 is guided in the pot piston 3, which consists of the piston part 3a and the pot extension 3b. The piston part 3a of the pot piston 3 is guided in the cylinder 4, which has a pressure medium supply opening 4a below the piston part 3a and is closed by the piston cover 5. On the end facing away from the spherical cap 2a, the floating piston 2 has a guide pin 6, which is enclosed by a spring assembly 7, which is arranged in a bottom recess 3c of the piston part 3a. The guide pin 6 is only used to center the plate springs. In the upper area of the pot shoulder 3b of the pot piston 3, a cone ring 8, which is axially secured against displacement, is inserted into it. The pressure tappet 1 has a neck-shaped ring cutout 1b with a conical surface 1c, which in the position shown of the pressure tappet 1 rests on the conical surface of the conical ring 8. The plunger 1 is in this position in its starting position with respect to the adjusting element indicated by 14 and its slightly curved pressure face 1d is at a distance from its flat stop surface 14a. As can be seen, the Pressure plunger 1 held under the pressure of the spring assembly 7 by the conical surfaces of the conical ring 8 in the centering position and axially locked.

Wie aus Fig. 2 zu ersehen, bewegt sich der Topfkolben 3 bei Zuführung eines Druckmittels durch die Druckmittelzuführöffnung 4a in Richtung des eingezeichneten Pfeils A nach oben und nimmt dabei den Druckstößel 1 mit, ohne daß dieser, bzw. der schwimmende Kolben 2 seine relative Lage zu dem Topfkolben 3 ändert.As can be seen from FIG. 2, the pot piston 3 moves upward in the direction of the arrow A when a pressure medium is supplied through the pressure medium supply opening 4a and takes the pressure tappet 1 with it, without this, or the floating piston 2, its relative position to the pot piston 3 changes.

Mit Auftreffen der gewölbten Druckstirn 1d des Druckstößels 1 auf die Anschlagfläche 14a des Stellelements 14 wird der Druckstößel 1, wie im linken Teil der Darstellung nach Fig. 3 wiedergegeben, gegen die Wirkung des Federpaketes 7 in Richtung des Pfeils B zusammen mit dem schwimmenden Kolben 2 in den Topfkolben 3 hineinbewegt, bis der schwimmende Kolben 2 auf dem Boden des Topfkolbens 3 aufliegt. Dabei löst sich die Konusfläche 1c des halsförmigen Ringausschnittes 1b von der Konusfläche des Konusrings 8 und hebt damit die Festlegung des Druckstößels 1 in dessen Zentrierstellung gemäß Fig. 1 auf. Der Druckstößel 1 kann jetzt in dieser freien Stellung weiter in Richtung des Pfeils A gegen die Anschlagfläche 14a des Stellelements 14 bewegt werden, wobei sich seine relative Lage zum Topfkolben 3 nicht mehr ändert, wie dies aus der Darstellung rechts in Fig. 3 hervorgeht.When the curved pressure face 1d of the pressure tappet 1 hits the stop surface 14a of the actuating element 14, the pressure tappet 1, as shown in the left part of the illustration in FIG. 3, counteracts the action of the spring assembly 7 in the direction of arrow B together with the floating piston 2 moved into the pot piston 3 until the floating piston 2 rests on the bottom of the pot piston 3. The conical surface 1c of the neck-shaped ring cutout 1b detaches from the conical surface of the conical ring 8 and thus cancels the fixing of the pressure tappet 1 in its centering position according to FIG. 1. The plunger 1 can now be moved in this free position in the direction of arrow A against the stop surface 14a of the actuating element 14, its position relative to the pot piston 3 no longer changing, as can be seen from the illustration on the right in FIG. 3.

Ergeben sich während der Druckkraftübertragung auf das Stellelement 9 nach beiden Darstellungen in Fig. 3 Querbewegungen des Stellelements 14, dann kann der Druckstößel 1, wie in Fig. 4 dargestellt, solche Bewegungen durch Pendeln in der Kugelkalotte 2a des schwimmenden Kolbens 2 innerhalb des in strichpunktierten Linien angedeuteten Winkels frei beweglich in dem Topfkolben 2 aufnehmen. Nach Beendigung der Druckübertragung durch Umsteuerung der Druckmittelbeaufschlagung des Kolbenteils 3a über den Zylinderringraum 4b auf nicht dargestellte Weise, bewegt sich der Topfkolben 3 entgegen der Richtung des Pfeils A wieder in die in Fig. 1 dargestellte Position, wobei der Druckstößel 1 unter der Wirkung des Federpaketes 7 wieder in die durch die Konusfläche 1c und den Konusring 8 bestimmte Zentrierposition gedrückt wird.If there are transverse movements of the actuating element 14 during the transmission of pressure force to the actuating element 9 according to both representations in FIG. 3, then the pressure tappet 1, as shown in FIG. 4, such movements by oscillating in the spherical cap 2a of the floating piston 2 within the dash-dotted line Lines of indicated angle are freely movable in the pot piston Record 2. After the end of the pressure transmission by reversing the pressure medium applied to the piston part 3a via the cylinder annulus 4b in a manner not shown, the pot piston 3 moves against the direction of arrow A again into the position shown in FIG. 1, the pressure tappet 1 under the action of the spring assembly 7 is pressed again into the centering position determined by the conical surface 1c and the conical ring 8.

Bei der Ausbildungsform nach Fig. 5 ist im Öffnungsbereich des Topfansatzes 3b des Topfkolbens 3 eine zweiteilige Dichtringhülse 10 oberhalb des Konusrings 8 angeordnet. Diese Dichtringhülse 10 besteht aus einem unteren Nutring 10a, der auf dem Konusring 8 bzw. einem über diesem eingesetzten Sicherungsring 15 aufliegt, und aus einem in dessen Nut geführten Dichtring 10b. Zwischen beide Ringe 10a und 10b ist in die Nut ein elastischer Zwischenring 11 eingesetzt. Den Kopf 1e des Druckstößels 1 umfaßt ein Gegendichtring 12, der ebenfalls aus zwei, durch einen elastischen Zwischenring 13 voneinander getrennten Ringen 12a und 12b gebildet wird. Der Durchmesser dieses Gegendichtungsrings 12 ist, wie ersichtlich, wesentlich größer als der des Dichtungsrings 10b der Dichtringhülse 10. In der rechts in der Zeichnung dargestellten Ausgangsposition des Druckstößels 1, bei der dieser mit der Konusfläche des Ringausschnitts 1b am Dichtungsring 8 anliegt, liegt der untere Ring 12b des Gegendichtungsrings 12 mit einer nach unten weisenden ebenen radialen Tellerfläche auf der oberen Ringstirn des Dichtungsrings 10b der Dichtringhülse 10 auf und deckt damit die obere Öffnung des Topfkolbens 3 dichtend ab. Der Topfkolben ist auf diese Weise in jeder Stellung des Druckstößels 1 gegen das Eindringen von Verschmutzung gesichert.5, a two-part sealing ring sleeve 10 is arranged above the cone ring 8 in the opening area of the pot extension 3b of the pot piston 3. This sealing ring sleeve 10 consists of a lower groove ring 10a, which rests on the conical ring 8 or a securing ring 15 inserted above it, and a sealing ring 10b guided in the groove thereof. An elastic intermediate ring 11 is inserted into the groove between the two rings 10a and 10b. The head 1e of the pressure tappet 1 comprises a counter-sealing ring 12, which is likewise formed from two rings 12a and 12b which are separated from one another by an elastic intermediate ring 13. As can be seen, the diameter of this counter-sealing ring 12 is substantially larger than that of the sealing ring 10b of the sealing ring sleeve 10. In the starting position of the pressure tappet 1 shown on the right in the drawing, in which it rests on the sealing ring 8 with the conical surface of the ring cutout 1b, the lower one lies Ring 12b of the counter-sealing ring 12 with a flat radial plate surface pointing downward on the upper ring face of the sealing ring 10b of the sealing ring sleeve 10 and thus covers the upper opening of the pot piston 3 in a sealing manner. The pot piston is secured in this way in every position of the pressure ram 1 against the ingress of dirt.

Claims (8)

Kolben-Zylinder-Aggregat zur Erzeugung und Übertragung von Druckkräften auf geradlinig verschiebbar geführte Stellelemente mit einem, in einem einseitig offenen Topfkolben, quer zur Druckrichtung pendelbar gelagerten Druckstößel,
dadurch gekennzeichnet,
daß der Druckstößel (1) aus einer durch aufeinanderliegende Dichtansätze am Außenrand des Druckstößels (1) und am Innenrand des Topfkolbens (3) bestimmten Zentrierposition entgegen der Wirkung eines am Boden des Topfkolbens (3) angeordneten Federelementes (7) in den Topfkolben (3) hinein gegen einen in diesem angeordneten Festanschlag in eine Pendelposition gleitverschiebbar ist.Piston-cylinder unit for the generation and transmission of pressure forces on linearly displaceably guided adjusting elements with a pressure tappet, which is pivoted transversely to the pressure direction in a cup piston that is open on one side,
characterized by
that the pressure tappet (1) from a centering position determined by sealing projections on the outside edge of the pressure tappet (1) and on the inside edge of the pot piston (3) counteracts the effect of a spring element (7) arranged on the bottom of the pot piston (3) in the pot piston (3) is slidably into a pendulum position against a fixed stop arranged therein. Kolben-Zylinder-Aggregat nach Anspruch 1,
dadurch gekennzeichnet,
daß die Dichtansätze aus in der Innenwandung des Topfkolbens (3) und auf dem Außenumfang des Druckstößels (1) angeordneten Konusflächen gebildet werden.Piston-cylinder unit according to claim 1,
characterized by
that the sealing lugs are formed from conical surfaces arranged in the inner wall of the pot piston (3) and on the outer circumference of the pressure ram (1). Kolben-Zylinder-Aggregat nach Anspruch 2,
dadurch gekennzeichnet,
daß die Konusflächen im Topfkolben (3) auf einem, in diesen einschiebbaren und axial festlegbaren Konusring (8) und die Konusflächen des Druckstößels (1) in einem halsförmigen Ringeinschnitt (1b) verlaufen.Piston-cylinder unit according to claim 2,
characterized by
that the conical surfaces in the pot piston (3) run on a conical ring (8) which can be inserted and axially fixed therein and the conical surfaces of the pressure tappet (1) run in a neck-shaped ring incision (1b). Kolben-Zylinder-Aggregat nach einem
oder mehreren der Ansprüche 1 bis 3,
mit einer im Topfkolben angeordneten, eine ballig geformte untere Stützfläche des Druckstößels abstützenden Kugelkalotte,
dadurch gekennzeichnet,
daß die Kugelkalotte (2) als ein im Topfkolben (3) schwimmend geführtes Kolbenstück (2a) ausgebildet ist, dessen dem Boden des Topfkolbens (3) zugewandte Stirnfläche von in Bodenausnehmungen des Topfkolbens (3) angeordneten Federpaketen (7) beaufschlagbar ist.Piston-cylinder unit after one
or more of claims 1 to 3,
with a spherical cap arranged in the pot piston and supporting a spherically shaped lower support surface of the pressure ram,
characterized,
that the spherical cap (2) is designed as a piston piece (2a) floating in the pot piston (3), the end face of which, facing the bottom of the pot piston (3), can be acted upon by spring assemblies (7) arranged in bottom recesses of the pot piston (3). Kolben-Zylinder-Aggregat nach Anspruch 4,
gekennzeichnet durch
von den Federpaketen (7) umschlossene, an die Stirnfläche des Kolbenstücks (2a) angesetzten, in Ausnehmungen (3d) im Boden des Topfkolbens (3) ragende Führungsstifte (6).Piston-cylinder unit according to claim 4,
marked by
guide pins (6), enclosed by the spring assemblies (7), attached to the end face of the piston piece (2a) and projecting into recesses (3d) in the bottom of the pot piston (3). Kolben-Zylinder-Aggregat nach einem
oder mehreren der Ansprüche 1 bis 5,
gekennzeichnet durch
am Kopf (1e) des Druckstößels (1) und im Öffnungsrand des Topfkolbens (3) angeordnete, den Kopf (1e) umfassende bzw. in den Öffnungsrand eingepaßte, elastisch gegeneinander verschieb- und andrückbare Dichtringe (12) bzw. Dichtringhülsen (10).Piston-cylinder unit after one
or more of claims 1 to 5,
marked by
on the head (1e) of the pressure tappet (1) and in the opening edge of the pot piston (3) arranged, the head (1e) or fitted into the opening edge, elastically displaceable and pressable sealing rings (12) or sealing ring sleeves (10). Kolben-Zylinder-Aggregat nach Anspruch 6,
dadurch gekennzeichnet,
daß Dichtring (12) und Dichtringhülse (10) jeweils aus einem Paar von Ringen (10a, 10b bzw. 12a, 12b) bestehen, zwischen denen elastische Zwischenringe (13 bzw. 11) angeordnet sind.Piston-cylinder unit according to claim 6,
characterized,
that the sealing ring (12) and sealing ring sleeve (10) each consist of a pair of rings (10a, 10b or 12a, 12b), between which elastic intermediate rings (13 and 11) are arranged. Kolben-Zylinder-Aggregat nach
den Ansprüchen 6 und/oder 7,
dadurch gekennzeichnet,
daß die Anlegefläche des am Kopf (1e) des Druckstößels (1) angeordneten Gegendichtrings (12) als ebener Teller und die Anlagefläche der im Topfkolben (3) angeordneten Dichtringhülse (10) als Ringscheibe ausgebildet sind, wobei der Durchmesser des Tellers wesentlich größer bemessen ist als der der Ringscheibe.Piston-cylinder unit after
claims 6 and / or 7,
characterized,
that the contact surface of the counter-sealing ring (12) arranged on the head (1e) of the pressure tappet (1) is designed as a flat plate and the contact surface of the sealing ring sleeve (10) arranged in the pot piston (3) is designed as an annular disk, the diameter of the plate being much larger than that of the washer.
EP91119809A 1990-12-06 1991-11-21 Piston-cylinder combination for generating and transmitting pressure forces Expired - Lifetime EP0489306B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT91119809T ATE103211T1 (en) 1990-12-06 1991-11-21 PISTON-CYLINDER UNIT FOR GENERATION AND TRANSMISSION OF PRESSURE FORCES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4038950 1990-12-06
DE4038950A DE4038950A1 (en) 1990-12-06 1990-12-06 PISTON CYLINDER UNIT FOR THE PRODUCTION AND TRANSMISSION OF PRESSURE FORCES

Publications (2)

Publication Number Publication Date
EP0489306A1 true EP0489306A1 (en) 1992-06-10
EP0489306B1 EP0489306B1 (en) 1994-03-23

Family

ID=6419735

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91119809A Expired - Lifetime EP0489306B1 (en) 1990-12-06 1991-11-21 Piston-cylinder combination for generating and transmitting pressure forces

Country Status (8)

Country Link
US (1) US5301598A (en)
EP (1) EP0489306B1 (en)
KR (1) KR920012764A (en)
CN (1) CN1028894C (en)
AT (1) ATE103211T1 (en)
DE (2) DE4038950A1 (en)
ES (1) ES2051555T3 (en)
RU (1) RU2047010C1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0925853A1 (en) * 1997-12-24 1999-06-30 DANIELI & C. OFFICINE MECCANICHE S.p.A. Compression unit for oscillating roll
AT527367A1 (en) * 2023-06-20 2025-01-15 Hoerbiger Wien Gmbh Contactless sealing piston with piston rod
AT527368A1 (en) * 2023-06-20 2025-01-15 Hoerbiger Wien Gmbh Contactless sealing piston with piston rod

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19705414C1 (en) * 1997-02-13 1998-04-09 Daimler Benz Ag Pneumatic actuator opening vehicle bodywork-section
US6164188A (en) * 1998-11-23 2000-12-26 Miser; H T Reciprocating pump/compressor with self-aligning piston
US6726625B2 (en) * 2002-04-05 2004-04-27 Reichert, Inc. Non-contact tonometer having improved air pump
DE102006004127B3 (en) * 2006-01-25 2007-07-05 Harry à Wengen GmbH & Co. KG Hydraulic actuator e.g. hydraulic cylinder, for e.g. teleloader, has piston rod connected with piston and with casing and bending rod, which are movable relative to one another at end of piston rod
RU2435077C2 (en) * 2008-05-13 2011-11-27 Общество с ограниченной ответственностью научно-производственное предприятие "Автоагрегат" Automotive clutch drive pneumohydraulic booster-3
ES2381561B1 (en) 2009-06-12 2013-05-03 Nitrogas S.A.U LOAD CYLINDER TO COMPENSATE UNBALANCED FORCES
CN102913506B (en) * 2012-11-09 2015-12-09 浙江大学 A kind of ball strand is built in piston rod type oil hydraulic cylinder
US10107314B2 (en) 2013-04-12 2018-10-23 Spx Flow, Inc. Cylinder having a floating piston, low profile swivel cap, and lubricated rod
PL2984351T3 (en) * 2013-04-12 2021-04-06 Spx Flow, Inc. Actuator with swivel cap
US9856892B2 (en) 2013-04-12 2018-01-02 Spx Flow, Inc. Cylinder having a floating piston, swivel cap, and lubricated rod
EP2824359B1 (en) 2013-07-08 2015-07-01 Bordignon Silvano S.r.l. Compensator for unbalanced compression forces for press machines
US10100928B2 (en) 2014-07-22 2018-10-16 Spx Flow, Inc. Floating piston
CN105805083A (en) * 2016-05-16 2016-07-27 南京晨光集团有限责任公司 Integrally-designed actuator execution mechanism with spherical hinges internally arranged in piston rod
CN107781255B (en) * 2017-10-11 2019-11-15 中国航发西安动力控制科技有限公司 A kind of resilient push structure
US10954974B2 (en) * 2017-10-20 2021-03-23 Hamilton Sunstrand Corporation Actuator assembly with lost motion device
US12180993B2 (en) * 2022-01-05 2024-12-31 Jeffery L. Johnson Joint for connecting an attachment to a hydraulic ram

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE955132C (en) * 1954-02-03 1956-12-27 Moeller & Neumann Gmbh Device for pressing the work rolls on roll stands
DE1527642A1 (en) * 1966-01-26 1970-04-09 Hoestemberghe & Kluetsch Gmbh Hydraulic adjusting device to keep the roll gap constant in roll stands, especially in block and slab rolling mills
DE2804007A1 (en) * 1978-01-31 1979-08-02 Schloemann Siemag Ag Balancing device for polling mill - with swivelling support pin to prevent premature leakage
WO1987003227A1 (en) * 1985-11-22 1987-06-04 Davy Mckee (Poole) Limited Rolling mill

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1057666A (en) * 1952-08-20 1954-03-10 Stabeg Appbau Gmbh Brake cylinder
GB1029134A (en) * 1962-07-10 1966-05-11 Automotive Prod Co Ltd Improvements in and relating to fluid pressure operated servo-devices
US3352143A (en) * 1965-04-02 1967-11-14 Leo C Bollar Impact apparatus
US3878769A (en) * 1973-06-07 1975-04-22 Cascade Corp Load clamping mechanism with limited play in arms
DE2650529A1 (en) * 1976-11-04 1978-05-18 Bosch Gmbh Robert Emergency spring brake cylinder - has shoulder for brake rod formed directly in hollow piston rod by compression
DE2818410A1 (en) * 1978-04-27 1979-11-08 Bosch Gmbh Robert SPRING BRAKE CYLINDER

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE955132C (en) * 1954-02-03 1956-12-27 Moeller & Neumann Gmbh Device for pressing the work rolls on roll stands
DE1527642A1 (en) * 1966-01-26 1970-04-09 Hoestemberghe & Kluetsch Gmbh Hydraulic adjusting device to keep the roll gap constant in roll stands, especially in block and slab rolling mills
DE2804007A1 (en) * 1978-01-31 1979-08-02 Schloemann Siemag Ag Balancing device for polling mill - with swivelling support pin to prevent premature leakage
WO1987003227A1 (en) * 1985-11-22 1987-06-04 Davy Mckee (Poole) Limited Rolling mill

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0925853A1 (en) * 1997-12-24 1999-06-30 DANIELI & C. OFFICINE MECCANICHE S.p.A. Compression unit for oscillating roll
US6094959A (en) * 1997-12-24 2000-08-01 Danieli & C. Officine Meccaniche Spa Compression unit for oscillating roll
AT527367A1 (en) * 2023-06-20 2025-01-15 Hoerbiger Wien Gmbh Contactless sealing piston with piston rod
AT527368A1 (en) * 2023-06-20 2025-01-15 Hoerbiger Wien Gmbh Contactless sealing piston with piston rod

Also Published As

Publication number Publication date
KR920012764A (en) 1992-07-27
ES2051555T3 (en) 1994-06-16
ATE103211T1 (en) 1994-04-15
CN1028894C (en) 1995-06-14
DE4038950A1 (en) 1992-06-11
RU2047010C1 (en) 1995-10-27
DE59101237D1 (en) 1994-04-28
CN1062021A (en) 1992-06-17
US5301598A (en) 1994-04-12
EP0489306B1 (en) 1994-03-23

Similar Documents

Publication Publication Date Title
EP0489306B1 (en) Piston-cylinder combination for generating and transmitting pressure forces
DE69921140T2 (en) LOW POWER CONTACT SPRING
DE69010791T2 (en) VALVE CLOSURE PIECE FOR A NON-SLIDING VALVE.
DE3707046C2 (en)
DE2637803A1 (en) WORKING CYLINDERS FOR PNEUMATIC OR HYDRAULIC PRESSURE MEDIA
DE3210208A1 (en) Device for connecting at least two thin-walled components by means of stamped lugs
EP0348711B1 (en) Device for axially shifting rolls in the stand of a rolling mill
DE69803904T2 (en) driving device
DE4436028A1 (en) Gas pressure spring
DE1775090A1 (en) Telescopic hydropneumatic shock absorber
DE2155615C3 (en) Tool head for FaIt and / or thread forming machines
DE1710108A1 (en) Sleeve tensioning device on winding devices for textile machines
DE499877C (en) Adjustment and automatic adjustment of tapered roller and shoulder bearings
DE2218562A1 (en) VULCANIZATION FORM FOR VEHICLE TIRES
DE2112651B2 (en) Clamping and releasing device for tools on drilling, milling and similar machine tools
DE2724397A1 (en) WORK CYLINDER WITH A BELOW-LIKE COAT
DE3108973C2 (en)
DE2621318A1 (en) AXIAL SWIVEL BEARING
AT395737B (en) CYLINDER PISTON UNIT FOR SLIDING A ROLLER CROSS TO YOUR LONGITUDE
DE2522213B2 (en) Multi-roll stand
DE2655284A1 (en) PNEUMATIC OR HYDRAULIC AND SINGLE OR DOUBLE PISTON-CYLINDER DEVICE
DE4131197C2 (en) Device for sealing axially displaceable and / or rotatable, radially movable piston rods
EP0002032A1 (en) Method and apparatus for making multiple-groove pulleys
DE102018117739A1 (en) roller burnishing tool
DD235895A5 (en) DIRECTIONAL PROCESSING METHOD FOR A COMBUSTION ENGINE AND METHOD USING THIS METHOD

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19911209

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE DE ES FR GB IT NL SE

17Q First examination report despatched

Effective date: 19930503

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE DE ES FR GB IT NL SE

REF Corresponds to:

Ref document number: 103211

Country of ref document: AT

Date of ref document: 19940415

Kind code of ref document: T

REF Corresponds to:

Ref document number: 59101237

Country of ref document: DE

Date of ref document: 19940428

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2051555

Country of ref document: ES

Kind code of ref document: T3

ITF It: translation for a ep patent filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19940627

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

EAL Se: european patent in force in sweden

Ref document number: 91119809.1

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19980121

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19980122

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19980130

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19981122

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19981130

BERE Be: lapsed

Owner name: SCHLOEMANN-SIEMAG A.G. SMS

Effective date: 19981130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990601

EUG Se: european patent has lapsed

Ref document number: 91119809.1

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19990601

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20011012

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20011026

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20011031

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20011106

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20011119

Year of fee payment: 11

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20021121

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20021121

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20021122

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030603

GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030731

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20031213

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051121