EP0068088A1 - Fluid pressure actuator with slotted cylinder and sealed ends - Google Patents

Fluid pressure actuator with slotted cylinder and sealed ends Download PDF

Info

Publication number
EP0068088A1
EP0068088A1 EP82103023A EP82103023A EP0068088A1 EP 0068088 A1 EP0068088 A1 EP 0068088A1 EP 82103023 A EP82103023 A EP 82103023A EP 82103023 A EP82103023 A EP 82103023A EP 0068088 A1 EP0068088 A1 EP 0068088A1
Authority
EP
European Patent Office
Prior art keywords
cylinder tube
longitudinal slot
piston
transmission element
guideways
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
EP82103023A
Other languages
German (de)
French (fr)
Other versions
EP0068088B1 (en
Inventor
Siegmund H. Kaiser
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.)
Norgren Martonair Europa GmbH
Original Assignee
Proma Prod & Marketing GmbH
Proma Produkt- und Marketing-Gesellschaft Mbh
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 Proma Prod & Marketing GmbH, Proma Produkt- und Marketing-Gesellschaft Mbh filed Critical Proma Prod & Marketing GmbH
Priority to AT82103023T priority Critical patent/ATE11951T1/en
Publication of EP0068088A1 publication Critical patent/EP0068088A1/en
Application granted granted Critical
Publication of EP0068088B1 publication Critical patent/EP0068088B1/en
Expired legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/082—Characterised by the construction of the motor unit the motor being of the slotted cylinder type

Definitions

  • the invention relates to a pressure medium cylinder with a longitudinally slotted cylinder tube which is closed at the end, in which a sealed piston is guided so as to be longitudinally displaceable and the longitudinal slot of which is sealed on both sides of the piston by an internal flexible cover band, which in the area of the piston and one which projects outwards through the longitudinal slot, with which Piston directly connected to the power transmission element is guided, the power transmission element being guided longitudinally via a parallel guide rigidly connected to the cylinder barrel and having at least two guide tracks lying outside the cylinder barrel.
  • the actuating force resulting from the pressure medium acting on the piston is transmitted directly through the longitudinal slot of the cylinder tube through the force transmission element to the driven device, whereby piston rods are omitted.
  • the longitudinal slot necessarily means a certain weakening of the cylinder tube, so that precautions must be taken in the event of higher loads in order to prevent undesirable expansion of the longitudinal slot. If the longitudinal slot widens, the sealing tape may function under certain circumstances no longer fulfill properly, with which leaks or even the so-called band explosion associated with a considerable risk of accident can occur. In addition, excessive side forces must not be exerted on the force transmission member by the driven device, because these forces must also be absorbed by the slotted cylinder tube.
  • the sealing strip Since the sealing strip must remain flexible in spite of its U-shaped cross-sectional shape, it can only absorb transverse forces acting on its flanges to a relatively small extent, which also limits its effectiveness in terms of keeping the longitudinal slot together. Attempts have also already been made (DE-PS 804 632) to remedy the weakening of the cylinder tube resulting from the longitudinal slot in that each longitudinal edge of the slot is delimited by an outwardly projecting longitudinal flange and the two longitudinal flanges by an attached, cross-sectionally C-shaped Brackets are held together.
  • the clip causes quite unfavorable sealing conditions with an external sealing tape and a complicated, with one part penetrating under the clip, force transmission element that only can be coupled laterally next to the longitudinal slot to the device driven by it, so that a moment is exerted on the power transmission element when driving, which is undesirable.
  • the object of the invention is therefore to provide a pressure medium cylinder with a longitudinally slotted cylinder tube which, with a simple structure, is characterized by a high strength of the cylinder tube against widening in the region of the longitudinal slot and which can also be used for applications in which the drive stroke is transverse to the longitudinal axis of the cylinder act directed forces on the power transmission element or it is exposed to the action of moments acting on it.
  • the pressure medium cylinder mentioned at the outset is characterized in that on both sides of the longitudinal slot Two parallel guideways are arranged directly on the outside of the cylinder tube in the area between the outer edge of the longitudinal slot and the plane of symmetry containing the piston axis, and in that the force transmission element has a bow-like guide part that overlaps the cylinder tube up to the height of the guideways and laterally against the guideways is supported.
  • the two guideways lie on both sides of the longitudinal slot, above the plane of symmetry containing the piston axis, i.e. in more or less immediate vicinity of the longitudinal slot.
  • the cylinder tube is therefore held together in the area of the longitudinal slot by the bow-like guide part of the force transmission element, which significantly increases its resistance to widening of the longitudinal slot.
  • the guideways form a parallel guide. for the force transmission element, via which moments or laterally directed forces acting on the force transmission element, for example, can be properly absorbed and derived directly into the wall of the cylinder tube, without being able to impair the piston or the force transmission element.
  • the cylinder tube carries at least on one side of the longitudinal slot two paired parallel guideways, whereby the number of digits which these reaction forces are introduced into the cylinder tube wall is increased accordingly.
  • the two guideways lying one above the other in pairs can each lie above and below the plane of symmetry containing the piston axis, which is the case it is particularly expedient if reaction forces acting on the force transmission element are to be expected in the circumferential direction of the cylinder tube.
  • the guideways lying on both sides of the longitudinal slot lie with their central axis in a plane running through the piston axis, which is at an angle with the longitudinal central plane of the longitudinal slot approx. 45 °.
  • the guideways can be formed by longitudinal grooves arranged on the cylinder tube outer wall or the guide part, which in a preferred embodiment have a prismatic shape.
  • the guide part is expediently supported via guide strips against the longitudinal grooves, which can consist of a wear-resistant, low-friction material, preferably a plastic material.
  • the guide part is supported against the guideways by rolling elements.
  • the guide part is adjustably supported against the guideways in order to ensure an exact play-free guidance of the force transmission element and to be able to compensate for any signs of wear and manufacturing tolerances.
  • the pressure medium cylinder has a cylinder tube 1, which contains a cylindrical cylinder bore 2, the axis 3 of which is arranged eccentrically with respect to the plane of symmetry of the cylinder tube 1 indicated at 4.
  • the cylinder tube 1 is delimited at the top and bottom by two parallel surfaces 5, 6 and has a longitudinal slot 7 leading into the cylinder bore 2, which opens into the surface 5.
  • a piston 10 is displaceably guided in the cylinder bore 2 of the cylinder tube 1, which is closed at the end by two covers 8, 9, the end of which is sealed at 11 and 12 by means of a sealing sleeve, the inner wall of the cylinder bore 2 and has a central part 13 of smaller diameter.
  • a force transmission element 14 is placed on the part 13, which projects through the longitudinal slot 7 by means of a web-like part 15 and has a bow-shaped guide part 16 connected to the web-like part 15, which in the manner shown in FIG. 2 has a substantially U-shaped cross-sectional shape has and partially engages around the cylinder tube 1 from the outside.
  • two parallel flanges 17 are placed, which serve to connect the driven device, not shown.
  • the power transmission element 14 with all of those mentioned Parts formed in one piece.
  • a multi-part power transmission element 14 is used, the parts (for example 15, 16, 17) of which are screwed or welded together.
  • two prismatic guide grooves 18 of essentially triangular cross-sectional shape are arranged in the outer wall of the cylinder tube 1, which are oriented parallel to one another and extend over the length of the cylinder tube 1 and form guide tracks for the force transmission element 14.
  • Two prismatic guide strips 19 cooperate with the guide grooves 18 ', which are inserted into corresponding grooves on the inside of the legs 20 of the guide part 16 and which consist of a low-friction and wear-resistant material, in particular a plastic material such as polytetrafluoroethylene.
  • the guide strips 19, which together with the guide grooves 1-8 form a parallel guide for the force transmission element 14 and via which the guide part 16 and thus the force transmission element 14 itself is supported against the outer wall of the cylinder tube 1, are by means of set screws 21 on the plane of symmetry indicated at 22 of the longitudinal slot 7 to be readjusted.
  • the cylinder tube 1 can also have further guide grooves 18, two of which are provided at 18a in the present case.
  • the two guide grooves 18a lie below the plane of symmetry 23 containing the axis 3 of the cylinder bore 2 and thus of the piston 10; corresponding ones reach into them
  • Guide strips 19a one of which is illustrated in broken lines in FIG. 2 and which can also be adjusted by means of screws 21.
  • the guide strips 19a are in turn each arranged in an extension, for example schematically indicated at 24, of the associated leg 20 of the guide part 16.
  • rolling elements or roller bearings could of course also be used as support elements, as it is also conceivable to arrange the guide grooves 18 in the legs 20 and to provide the guide strips 19 or the mentioned support elements on the cylinder tube outer wall.
  • the center grooves of the two guide grooves 18 each lie in a plane running through the piston axis 3, which includes an angle of approximately 45 ° with the longitudinal center plane 22 of the longitudinal slot 7. This ensures a uniform absorption of a radial load of the force transmission element 14 by both guide grooves 18.
  • the cover band 27 lies in a longitudinal groove 29 of the surface 5 of the cylinder tube 1 which is symmetrical with the longitudinal slot 7, while the cover band 25 lies outside the piston 10 in a longitudinal groove 30 which is also arranged symmetrically to the longitudinal slot 7, which at the same time gives it lateral guidance and the base 31 of which absorbs the pressure medium.
  • the sealing tape 25 is provided with two wedge-shaped sealing lips or strips 32, which interact with corresponding sealing surfaces 33 in the region of the cylinder bore 2.
  • the cover tape 27 holds the sealing tape 25 by means of two releasable connecting members, which in the form of a web 34 and a cross-section which are essentially wedge-shaped in cross-section and are formed on the sealing tape 25 the cover band 27 are also provided correspondingly wedge-shaped profiled edge-open longitudinal groove 35.
  • the two connecting elements 34, 35 are released from each other during the forward movement of the piston and the spreading of the two bands 25, 27 caused thereby by the band expansion part 26, while they are brought into engagement with one another on the other side of the piston by the piston 10 and the pressure part 28, so that they assume the state of FIG. 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

1. A pressure fluid cylinder comprising a longitudinally slotted cylinder tube (1) closed at its ends and enclosing a piston (10) provided therein in a sealed relationship and for longitudinal displacement, the longitudinal slot (7) of said cylinder tube being sealed by a flexible sealing strip (25) which is provided in the interior of the cylinder tube on both sides of the piston and extending beneath a load transmission element (14) in the zone of the piston, which load transmission element projects outwardly through the longitudinal slot (7) and is directly connected with the piston (10), the load transmission element being longitudinally guided by means of parallel guide means (18, 19) rigidly connected with the cylinder tube (1) and having at least two guideways (18) arranged outside the cylinder tube, characterized in that at least one guideway (18) of each of the parallel guide means is arranged in the zone between the outer edge of the longitudinal slot (7) and the horizontal plane (23) in which the axis of the piston is located and which extends perpendicular to the longitudinal central plane (22) extending through the axis (3) of the piston and the longitudinal slot (7), on both sides of the longitudinal slot (7), directly on the outer surface of the cylinder tube (1), and in that the load transmission element (14) has a bow-like guide member (16) which overlaps the cylinder tube (1) to the height of the guideways (18), which guide member is laterally supported against the guideways (18) and by means of which the cylinder tube (1) is held together in the zone of the longitudinal slot (7).

Description

Die Erfindung betrifft einen Druckmittelzylinder mit einem längsgeschlitzten endseitig verschlossenen Zylinderrohr, in dem ein abgedichteter Kolben längsverschieblich geführt ist und dessen Längsschlitz beiderseits des Kolbens durch ein innenliegendes biegsames Abdeckband abgedichtet ist, das im Bereiche des Kolbens und einem durch den Längsschlitz nach außen ragenden, mit dem Kolben unmittelbar verbundenen Kraftübertragungselement hiniurchgeführt ist, wobei das Kraftübertragungselement über eine mit dem Zylinderrohr starr verbundene, wenigstens zwei außerhalb des Zylinderrohres liegende Führungsbahnen aufweisende Parallelführung längsgeführt ist.The invention relates to a pressure medium cylinder with a longitudinally slotted cylinder tube which is closed at the end, in which a sealed piston is guided so as to be longitudinally displaceable and the longitudinal slot of which is sealed on both sides of the piston by an internal flexible cover band, which in the area of the piston and one which projects outwards through the longitudinal slot, with which Piston directly connected to the power transmission element is guided, the power transmission element being guided longitudinally via a parallel guide rigidly connected to the cylinder barrel and having at least two guide tracks lying outside the cylinder barrel.

Bei Druckmittelzylindern mit längsgeschlitztem Zylinderrohr wird die von der Druckmittelbeaufschlagung des Kolbens herrührende Betätigungskraft durch den Längsschlitz des Zylinderrohres hindurch über das Kraftübertragungselement unmittelbar auf die angetriebene Einrichtung übertragen, womit Kolbenstangen wegfallen. Der Längsschlitz bedeutet notwendigerweise eine gewisse Schwächung des Zylinderrohres, so daß bei höherer Beanspruchung Vorsorge getroffen werden muß, um ein unerwünschtes Aufweiten des Längsschlitzes zu verhüten. Wenn Sich der Längsschlitz aufweitet, kann nämlich das Dichtband seine Funktion unter Umständen nicht mehr einwandfrei erfüllen, womit Leckagen oder sogar die mit einer erheblichen Unfallgefahr verbundene sogenannte Bandexplosion auftreten können. Außerdem dürfen von der angetriebenen Einrichtung aus keine allzu großen seitlichen Kräfte auf das Kraftübertragungsglied ausgeübt werden, weil diese Kräfte auch von dem geschlitzten Zylinderrohr aufgenommen werden müssen.In pressure medium cylinders with a longitudinally slotted cylinder tube, the actuating force resulting from the pressure medium acting on the piston is transmitted directly through the longitudinal slot of the cylinder tube through the force transmission element to the driven device, whereby piston rods are omitted. The longitudinal slot necessarily means a certain weakening of the cylinder tube, so that precautions must be taken in the event of higher loads in order to prevent undesirable expansion of the longitudinal slot. If the longitudinal slot widens, the sealing tape may function under certain circumstances no longer fulfill properly, with which leaks or even the so-called band explosion associated with a considerable risk of accident can occur. In addition, excessive side forces must not be exerted on the force transmission member by the driven device, because these forces must also be absorbed by the slotted cylinder tube.

Um die Widerstandsfähigkeit des Zylinderrohres gegen dieses Aufweiten des Längsschlitzes zu erhöhen ist es bekannt (DE-PS 843 482), die Zylinderbohrung exzentrisch zu der Außenwand des Zylinderrohres anzuordnen und mit dieser durch Rippen zu verbinden. Damit wird zwar die Festigkeit des Zylinderrohres erhöht, doch wird das Zylinderrohr notwendigerweise schwer und teuer. Bei einem anderen Druckmittelzylinder (DE-PS 846 493) hat man eine Abhilfe in der Weise versucht, daß ein Dichtstreifen mit U-förmiger Querschnittsgestalt verwendet wird, dessen Flansche in Aussparungen beidseitig des Längsschlitzes eingreifen, so daß der Dichtstreifen neben seiner Dichtfunktion dazu beiträgt, den Längsschlitz zusammen zu halten und damit die Gefahr des Aufweitens herabzusetzen. Da der Dichtstreifen trotz seiner U-förmigen Querschnittsgestalt flexibel bleiben muß, kann er nur in verhältnismäßig geringem Maße an seinen Flanschen angreifende Querkräfte aufnehmen, womit auch seine Wirksamkeit im Sinne des Zusamτenhaltens des Längsschlitzes beschränkt ist. Es wurde auch schon versucht (DE-PS 804 632), der von dem Längsschlitz herrührenden Schwächung des Zylinderrohres dadurch abzuhelfen, daß jede Längskante des Schlitzes von einem nach außen ragenden Längsflansch begrenzt ist und die beiden Längsflansche durch eine aufgesetzte, im Querschnitt C-förmige Klammer zusammengehalten sind. Die Klammer bedingt aber recht ungünstige Abdicttungsverhältnisse mit einem außenliegenden Dichtband und ein kompliziertes, mit einem-Teil unter der Klammer durchgreifendes Kraftübertragungselement, das lediglich seitlich neben dem Längsschlitz an die von ihm angetriebene Einrichtung angekoppelt werden kann, so daß auf das Kraftübertragungselement beim Antrieb ein Moment ausgeübt wird, was unerwünscht ist.In order to increase the resistance of the cylinder tube against this widening of the longitudinal slot, it is known (DE-PS 843 482) to arrange the cylinder bore eccentrically to the outer wall of the cylinder tube and to connect it with ribs. This increases the strength of the cylinder tube, but the cylinder tube is necessarily heavy and expensive. In another pressure medium cylinder (DE-PS 846 493) a remedy has been attempted in such a way that a sealing strip with a U-shaped cross-sectional shape is used, the flanges of which engage in recesses on both sides of the longitudinal slot, so that the sealing strip contributes to its sealing function, keep the longitudinal slot together and thus reduce the risk of expansion. Since the sealing strip must remain flexible in spite of its U-shaped cross-sectional shape, it can only absorb transverse forces acting on its flanges to a relatively small extent, which also limits its effectiveness in terms of keeping the longitudinal slot together. Attempts have also already been made (DE-PS 804 632) to remedy the weakening of the cylinder tube resulting from the longitudinal slot in that each longitudinal edge of the slot is delimited by an outwardly projecting longitudinal flange and the two longitudinal flanges by an attached, cross-sectionally C-shaped Brackets are held together. The clip, however, causes quite unfavorable sealing conditions with an external sealing tape and a complicated, with one part penetrating under the clip, force transmission element that only can be coupled laterally next to the longitudinal slot to the device driven by it, so that a moment is exerted on the power transmission element when driving, which is undesirable.

Um zu vermeiden, daß das Kraftübertragungselement und damit der Kolben beim Antrieb quer zu der Zylinderlängsachse wirkenden Kräften oder der Wirkung von Momenten ausgesetzt ist, ist es bekannt (DE-OS 2908 605), dem Zylinderrohr eine oder mehrere parallel verlaufende -Führungsschienen zuzuordnen, die mit dem Zylinderrohr über Verbindungsplatten endseitig starr verbunden sind und auf denen über Kugelführungsbüchsen ein Wagen längsverschieblich gelagert ist, der mit dem Kraftübertragungselement starr verbunden ist. Durch die im Abstand zu dem Zylinderrohr angeordneten Führungsschienen mit dem darauf laufenden Wagen wird aber der Platzbedarf des ganzen Druckmittelzylinders wesentlich erhöht, während sich die Herstellungskosten beträchtlich vergrößern. Außerdem trägt diese Anordnung nichts dazu bei, die Widerstandsfähigkeit des Zylinderrohres selbst gegen Aufweitung im Bereiche des Längsschlitzes zu erhöhen.In order to avoid that the force transmission element and thus the piston are subjected to forces or the action of moments acting transversely to the longitudinal axis of the cylinder, it is known (DE-OS 2908 605) to assign one or more parallel guide rails to the cylinder tube which are rigidly connected at the end to the cylinder tube via connecting plates and on which a carriage is mounted so as to be longitudinally displaceable via ball guide bushes and is rigidly connected to the force transmission element. Due to the spaced from the cylinder tube guide rails with the carriage running on it, however, the space requirement of the entire pressure medium cylinder is significantly increased, while the manufacturing costs increase considerably. In addition, this arrangement does nothing to increase the resistance of the cylinder tube itself to widening in the area of the longitudinal slot.

Aufgabe der Erfindung ist es deshalb, einen Druckmittelzylinder mit längsgeschlitztem Zylinderrohr zu schaffen, der sich bei einfachem Aufbau durch eine hohe Festigkeit des.Zylinderrohrs gegen Aufweiten im Bereiche des Längsschlitzes auszeichnet und der auch für Anwendungsfälle einsetzbar ist, bei denen beim Antriebshub quer zu der Zylinderlängsachse gerichtete Kräfte auf das Kraftübertragungselement einwirken oder dieses der Wirkung von an ihm angreifenden Momenten ausgesetzt ist.The object of the invention is therefore to provide a pressure medium cylinder with a longitudinally slotted cylinder tube which, with a simple structure, is characterized by a high strength of the cylinder tube against widening in the region of the longitudinal slot and which can also be used for applications in which the drive stroke is transverse to the longitudinal axis of the cylinder act directed forces on the power transmission element or it is exposed to the action of moments acting on it.

Zur Lösung dieser Aufgabe ist der eingangs genannte Druckmittelzylinder erfindungsgemäß dadurch gekennzeichnet, daß zu beiden Seiten des Längsschlitzes unmittelbar auf der Außenseite des Zylinderrohres zwei parallele Führungsbahnen in dem Bereich zwischen der äußeren Berandung des Längsschlitzes und der die Kolbenachse enthaltenden Symmetrieebene angeordnet sind, und daß das Kraftübertragungselement ein das Zylinderrohr bis auf die Höhe der Führungsbahnen übergreifendes bügelartiges Führungsteil aufweist, das seitlich gegen die Führungsbahnen abgestützt ist.To solve this problem, the pressure medium cylinder mentioned at the outset is characterized in that on both sides of the longitudinal slot Two parallel guideways are arranged directly on the outside of the cylinder tube in the area between the outer edge of the longitudinal slot and the plane of symmetry containing the piston axis, and in that the force transmission element has a bow-like guide part that overlaps the cylinder tube up to the height of the guideways and laterally against the guideways is supported.

Die beiden Führungsbahnen liegen beidseitig des Längsschlitzes, und zwar oberhalb der die Kolbenachse enthaltenden Symmetrieebene, d.h. in mehr oder weniger unmittelbarer Nähe des Längsschlitzes. Das Zylinderrohr wird deshalb im Bereiche des Längsschlitzes von dem bügelartigen Führungsteil des Kraftübertragungselementes zusammengehalten, womit seine Widerstandsfähigkeit gegen Aufweiten des Längsschlitzes wesentlich erhöht wird. Gleichzeitig bilden die Führungsbahnen eine Parallelführung. für das Kraftübertragungselement, über die auf das Kraftübertragungselement etwa zur Einwirkung kommende Momente oder seitlich gerichtete Kräfte einwandfrei aufgenommen und unmittelbar in die Wandung des Zylinderrohres abgeleitet werden, ohne den Kolben oder das Kraftübertragungselement beeinträchtigen zu können.The two guideways lie on both sides of the longitudinal slot, above the plane of symmetry containing the piston axis, i.e. in more or less immediate vicinity of the longitudinal slot. The cylinder tube is therefore held together in the area of the longitudinal slot by the bow-like guide part of the force transmission element, which significantly increases its resistance to widening of the longitudinal slot. At the same time, the guideways form a parallel guide. for the force transmission element, via which moments or laterally directed forces acting on the force transmission element, for example, can be properly absorbed and derived directly into the wall of the cylinder tube, without being able to impair the piston or the force transmission element.

Insbesondere bei schwierigen Anwendungsfällen, bei denen mit dem Auftreten von sehr ungünstig gerichteten Reaktionskräften am Kraftübertragungselement gerechnet werden muß, kann es zweckmäßig sein, wenn das Zylinderrohr zumindest auf einer Seite des Längsschlitzes zwei paarweise übereinander angeordnete parallele Führungsbahnen trägt, wodurch die Zahl der Stellen, an denen diese Reaktionskräfte in die Zylinderrohrwandung eingeleitet werden, entsprechend erhöht wird. Dabei können die beiden paarweise übereinanderliegenden Führungsbahnen jeweils oberhalb und unterhalb der die Kolbenachse enthaltenden Symmetrieebene liegen, was vor allem dann zweckmäßig ist, wenn in Umfangsrichtung des Zylinderrohres wirkende Reaktionskräfte an dem Kraftübertragungselement zu erwarten sind.Especially in difficult applications, in which the occurrence of very unfavorably directed reaction forces on the power transmission element can be expected, it may be expedient if the cylinder tube carries at least on one side of the longitudinal slot two paired parallel guideways, whereby the number of digits which these reaction forces are introduced into the cylinder tube wall is increased accordingly. The two guideways lying one above the other in pairs can each lie above and below the plane of symmetry containing the piston axis, which is the case it is particularly expedient if reaction forces acting on the force transmission element are to be expected in the circumferential direction of the cylinder tube.

Um zu erreichen, daß die Führungsbahnen eine an dem Kraftübertragungselement angreifende radiale Last möglichst gleichmäßig aufnehmen ist es zweckmäßig, wenn die beidseitig des Längsschlitzes liegenden Führungsbahnen mit ihrer Mittelachse jeweils in einer durch die Kolbenachse verlaufenden Ebene liegen, die mit der Längsmittelebene des Längsschlitzes einen Winkel von ca. 45° einschließt.In order to ensure that the guideways absorb a radial load acting on the force transmission element as evenly as possible, it is expedient if the guideways lying on both sides of the longitudinal slot lie with their central axis in a plane running through the piston axis, which is at an angle with the longitudinal central plane of the longitudinal slot approx. 45 °.

Die Führungsbahnen können durch an der Zylinderrohraußenwand oder dem Führungsteil angeordnete Längsnuten gebildet sein, die in einer bevorzugten Ausführungsform eine prismatische Gestalt aufweisen. Das Führungsteil ist zweckmäßigerweise über Führungsleisten gegen die Längsnuten abgestützt, die aus einem verschleißfesten, reibungsarmen Material, vorzugsweise einem Kunststoffmaterial, bestehen können. Es sind aber auch Anordnungen denkbar, bei denen das Führungsteil über Wälzkörper gegen die Führungsbahnen abgestützt ist.The guideways can be formed by longitudinal grooves arranged on the cylinder tube outer wall or the guide part, which in a preferred embodiment have a prismatic shape. The guide part is expediently supported via guide strips against the longitudinal grooves, which can consist of a wear-resistant, low-friction material, preferably a plastic material. However, arrangements are also conceivable in which the guide part is supported against the guideways by rolling elements.

Schließlich ist es vorteilhaft, wenn das Führungsteil nachstellbar gegen die Führungsbahnen abgestützt ist, um damit eine exakte spielfreie Führung des Kraftübertragungselementes zu gewährleisten und etwaige Verschleißerscheinungen und Herstellungstoleranzen ausgleichen zu können.Finally, it is advantageous if the guide part is adjustably supported against the guideways in order to ensure an exact play-free guidance of the force transmission element and to be able to compensate for any signs of wear and manufacturing tolerances.

In der Zeichnung ist ein Ausführungsbeispiel des Gegenstandes der Erfindung dargestellt. Es zeigen:

  • Fig. 1 einen Druckmittelzylinder gemäß der Erfindung, im axialen Schnitt, in einer schematischen Seitenansicht,
  • Fig. 2 den Druckmittelzylinder nach Fig. 1, geschnitten längs der Linie II-II der Fig. 1, in einer perspektivischen Teildarstellung und in einem anderen Maßstab, und
  • Fig. 3 den Druckmittelzylinder nach Fig. 1, geschnitten längs der Linie III-III der Fig. 1, in einer perspektivischen Teildarstellung und in einem anderen Maßstab.
In the drawing, an embodiment of the object of the invention is shown. Show it:
  • 1 shows a pressure medium cylinder according to the invention, in axial section, in a schematic side view,
  • Fig. 2, the pressure medium cylinder of Fig. 1, cut along the line II-II of Fig. 1, in a perspective partial view and on a different scale, and
  • Fig. 3 shows the pressure medium cylinder according to Fig. 1, cut along the line III-III of Fig. 1, in a perspective partial view and on a different scale.

Der Druckmittelzylinder weist ein Zylinderrohr 1 auf, das eine.zylindrische Zylinderbohrung 2 enthält, deren Achse 3 gegenüber der bei 4 angedeuteten Symmetrieebene des Zylinderrohres 1 exzentrisch angeordnet ist. Das Zylinderrohr 1 ist oben und unten durch zwei parallel Flächen 5,6 begrenzt und weist einen'in die Zylinderbohrung 2 führenden Längsschlitz 7 auf, der in der Fläche 5 mündet.The pressure medium cylinder has a cylinder tube 1, which contains a cylindrical cylinder bore 2, the axis 3 of which is arranged eccentrically with respect to the plane of symmetry of the cylinder tube 1 indicated at 4. The cylinder tube 1 is delimited at the top and bottom by two parallel surfaces 5, 6 and has a longitudinal slot 7 leading into the cylinder bore 2, which opens into the surface 5.

In der Zylinderbohrung 2 des endseitig durch zwei Deckel 8,9 verschlossenen Zylinderrohres 1 ist ein Kolben 10 verschieblich geführt, der endseitig bei 11 und 12 jeweils mittels einer Dichtmanschette tegen die Innenwand der Zylinderbohrung 2 abgedichtet ist und einen mittleren Teil 13 kleineren Durchmessers aufweist. Auf den Teil 13 ist ein Kraftübertragungselement 14 aufgesetzt, das mittels eines stegartigen Teiles 15 durch den Längsschlitz 7 ragt und ein mit dem stegartigen Teil 15 verbundenes bügelförmiges Führungsteil 16 aufweist, welches in der aus Fig. 2 ersichtlichen Weise eine im wesentlichen U-förmige Querschnittsgestalt aufweist und das Zylinderrohr 1 von außen her teilweise umgreift..Auf das Führungteil 16 sind zwei parallele Flansche 17 aufgesetzt, die zum Anschluß der nicht weiter dargestellten angetriebenen Einrichtung dienen.A piston 10 is displaceably guided in the cylinder bore 2 of the cylinder tube 1, which is closed at the end by two covers 8, 9, the end of which is sealed at 11 and 12 by means of a sealing sleeve, the inner wall of the cylinder bore 2 and has a central part 13 of smaller diameter. A force transmission element 14 is placed on the part 13, which projects through the longitudinal slot 7 by means of a web-like part 15 and has a bow-shaped guide part 16 connected to the web-like part 15, which in the manner shown in FIG. 2 has a substantially U-shaped cross-sectional shape has and partially engages around the cylinder tube 1 from the outside. On the guide part 16, two parallel flanges 17 are placed, which serve to connect the driven device, not shown.

Bei dem dartgestellten Ausführungsbeispiel ist das Kraftübertragungselement 14 mit all seinen erwähnten Teilen einstückig ausgebildet. Es sind aber auch Ausführungsformen denkbar, bei denen ein mehrteiliges Kraftübertragungselement 14 Verwendung findet, dessen Teile (beispielsweise 15,16,17) miteinander verschraubt oder verschweißt sind.In the embodiment shown, the power transmission element 14 with all of those mentioned Parts formed in one piece. However, embodiments are also conceivable in which a multi-part power transmission element 14 is used, the parts (for example 15, 16, 17) of which are screwed or welded together.

Beidseitig des Längsschlitzes 7 sind in der Außenwand des Zylinderrohres 1 einander gegenüberliegend zwei prismatische Führungsnuten 18 von im wesentlichen dreiecksförmiger Querschnittsgestalt angeordnet, die parallel zueinander ausgerichtet sich über die Länge des Zylinderrohres 1 erstrecken und Führungsbahnen für das Kraftübertragungselement 14 bilden. Mit den Führungsnuten 18' wirken zwei prismatische Führungsleisten 19 zusammen, die in entsprechende Nuten auf der Innenseite der Schenkel 20 des Führungsteiles 16 eingesetzt sind und die aus einem reibungsarmen und verschleißfesten Material, insbesondere einem Kunststoffmaterial,wie etwa Polytetrafluoräthylen, bestehen. Die Führungsleisten 19, die gemeinsam mit den Führungsnuten 1-8 eine Parallelführung für das Kraftübertragungselement 14 bilden und über die sich das Führungsteil 16 und damit das Kraftübertragungselement 14 selbst gegen die Außenwand des Zylinderrohres 1 abstützt, sind mittels Stellschrauben 21 auf die bei 22 angedeutete Symmetrieebene des Längsschlitzes 7 zu nachstellbar.On both sides of the longitudinal slot 7, two prismatic guide grooves 18 of essentially triangular cross-sectional shape are arranged in the outer wall of the cylinder tube 1, which are oriented parallel to one another and extend over the length of the cylinder tube 1 and form guide tracks for the force transmission element 14. Two prismatic guide strips 19 cooperate with the guide grooves 18 ', which are inserted into corresponding grooves on the inside of the legs 20 of the guide part 16 and which consist of a low-friction and wear-resistant material, in particular a plastic material such as polytetrafluoroethylene. The guide strips 19, which together with the guide grooves 1-8 form a parallel guide for the force transmission element 14 and via which the guide part 16 and thus the force transmission element 14 itself is supported against the outer wall of the cylinder tube 1, are by means of set screws 21 on the plane of symmetry indicated at 22 of the longitudinal slot 7 to be readjusted.

Zusätzlich zu den beiden in Fig. 2 dargestellten Führungsnuten 18 in der Nähe des Längsschlitzes 7 kann das Zylinderrohr 1 noch weitere Führungsnuten 18 aufweisen, von denen im vorliegenden Falle zwei bei 18a vorgesehen sind. Die beiden Führungsnuten 18a liegen unterhalb der die Achse 3 der Zylinderbohrung 2 und damit des Kolbens 10 enthaltenden Symmetrieebene 23; in sie greifen entsprechende Führungsleisten 19a ein, von denen eine in Fig. 2 links gestrichelt veranschaulicht ist und die ebenfalls mittels Schrauben 21 nachstellbar sind. Die Führungsleisten 19a sind ihrerseits jeweils in einer, beispielsweise bei 24 schematisch angedeuteten Verlängerung des zugeordneten Schenkels 20 des Führungsteiles 16 angeordnet.In addition to the two guide grooves 18 shown in FIG. 2 in the vicinity of the longitudinal slot 7, the cylinder tube 1 can also have further guide grooves 18, two of which are provided at 18a in the present case. The two guide grooves 18a lie below the plane of symmetry 23 containing the axis 3 of the cylinder bore 2 and thus of the piston 10; corresponding ones reach into them Guide strips 19a, one of which is illustrated in broken lines in FIG. 2 and which can also be adjusted by means of screws 21. The guide strips 19a are in turn each arranged in an extension, for example schematically indicated at 24, of the associated leg 20 of the guide part 16.

Anstelle der Führungsleisten 19 könnten naturgemäß auch Wälzkörper oder Wälzlager als Abstützelemente verwendet werden, wie es auch denkbar ist, die Führungsnuten 18 in den Schenkeln 20 anzuordnen und die Führungsleisten-19 bzw. die erwähnten Abstützelemente auf der Zylinderrohraußenwand vorzusehen.Instead of the guide strips 19, rolling elements or roller bearings could of course also be used as support elements, as it is also conceivable to arrange the guide grooves 18 in the legs 20 and to provide the guide strips 19 or the mentioned support elements on the cylinder tube outer wall.

Wenn bei einem von der Druckmittelbeaufschlagung herrührenden Krafthub des Kolbens 10 auf das Kraftübertragungselement 14 eine quer zu der Kolbenlängsachse 3 gerichtete Kraft oder ein Moment ausgeübt werden sollte, so werden diese Kraft bzw. das Moment von den Führungsnuten 18 und den Führungsleisten-19 einwandfrei aufgenommen, so daß der Kolben 10 dadurch nicht beeinträchtigt wird und auch keine Aufweitung des Längsschlitzes 7 des Zylinderrohres 1 erfolgt. Da die beiden Führungsleisten 19 zwischen der die Berandung des Längsschlitzes 7 enthaltenden Fläche 5 und der Symmetrieebene 23 in der Nähe des Längsschlitzes 7 liegen und somit bestrebt sind, die Außenwand des Zylinderrohres 1 im Bereiche des Längsschlitzes 7 zusammenzudrücken, verhindert das Kraftübertragungselement 14 mit seinem Führungsteil 16 und mit der von den Teilen 18,19 gebildeten Parallelführung eine unerwünschte Aufweitung des Längsschlitzes 7.If a force or a moment directed transversely to the longitudinal axis 3 of the piston should be exerted on the force transmission element 14 during a force stroke of the piston 10 due to the application of pressure medium, then this force or the moment is properly absorbed by the guide grooves 18 and the guide strips 19, so that the piston 10 is not adversely affected and there is no widening of the longitudinal slot 7 of the cylinder tube 1. Since the two guide strips 19 lie between the surface 5 containing the edges of the longitudinal slot 7 and the plane of symmetry 23 in the vicinity of the longitudinal slot 7 and thus endeavor to compress the outer wall of the cylinder tube 1 in the region of the longitudinal slot 7, the force transmission element 14 with its guide part prevents it 16 and with the parallel guide formed by the parts 18, 19 an undesirable widening of the longitudinal slot 7.

Die beiden Führungsnuten 18 liegen mit ihrer Mittelachse ersichtlich jeweils in einer durch die Kolbenachse 3 verlaufenden Ebene, die mit der Längsmittelebene 22 des Längsschlitzes 7 einen Winkel von ca. 45° einschließt. Dadurch wird eine gleichmäßige Aufnahme einer radialen Last des Kraftübertragungselementes 14 durch beide Führungsnuten 18 gewährleistet.The center grooves of the two guide grooves 18 each lie in a plane running through the piston axis 3, which includes an angle of approximately 45 ° with the longitudinal center plane 22 of the longitudinal slot 7. This ensures a uniform absorption of a radial load of the force transmission element 14 by both guide grooves 18.

Die Abdichtung des Längsschlitzes 7 in den Bereichen außerhalb des Kolbens 10 erfolgt durch ein in der Zylinderbohrung 2 angeordnetes endseitig in den Deckeln 8,9 verankertes biegsames Band 25, das unter einem in Zylinderlängsrichtung doppelt keilförmigen Bandspreizteil 26 hindurchgeführt ist, auf welchem ein biegsames ebenfalls in den Deckeln 8,9 endseitig verankertes Abdeckband 27 aufliegt, das durch zwei Andrückteile 28 an den Enden des Kraftübertragungselementes 14 oberhalb des Kolbens 10 gegen die Zylinderrohraußenfläche niedergedrückt wird. Wie aus Fig. 3 zu entnehmen, liegt das Abdeckband 27 in einer zu dem Längsschlitz 7 symmetrischen Längsnut 29 der Fläche 5 des Zylinderrohres 1, während sich das Abdeckband 25 außerhalb des Kolbens 10 in eine ebenfalls symmetrisch zu dem Längsschlitz 7 angeordnete Längsnut 30 einlegt, die ihm gleichzeitig eine seitliche Führung gibt und deren Grund 31 die Druckmittelbelastung aufnimmt. Das Dichtband 25 ist-mit zwei keilförmig zulaufenden Dichtlippen oder -leisten 32 versehen, die mit entsprechenden Dichtflächen 33 im Bereiche der Zylinderbohrung 2 zusammenwirken. Das Abdeckband 27 hält das Dichtband 25 mittels zweier lösbarer Verbindungsglieder, die in Gestalt eines an dem Dichtband 25 angeformten, im Querschnitt im wesentlichen keilförmigen Steges 34 und einer an dem Abdeckband 27 vorgesehenen ebenfalls entsprechend keilförmig profilierten randoffenen Längsnut 35 gebildet sind. Die beiden Verbindungselemente 34,35 werden bei der Vorbewegung des Kolbens und der dabei von dem Bandspreizteil 26 bewirkten Spreizung der beiden Bänder 25,27 voneinander gelöst, während sie auf der anderen Kolbenseite von dem Kolben 10 und dem Andrückteil 28 miteinander in Eingriff gebracht werden, so daß sie den Zustand nach Fig. 3 einnehmen.The sealing of the longitudinal slot 7 in the areas outside of the piston 10 takes place by means of a flexible band 25 anchored in the cylinder bore 2 at the end anchored in the covers 8, 9, which is guided under a band wedge-shaped part 26 which is double wedge-shaped in the longitudinal direction of the cylinder and on which a flexible part also extends the covers 8, 9 anchored at the end there is a cover band 27 which is pressed against the outer surface of the cylinder tube by two pressing parts 28 at the ends of the force transmission element 14 above the piston 10. As can be seen from FIG. 3, the cover band 27 lies in a longitudinal groove 29 of the surface 5 of the cylinder tube 1 which is symmetrical with the longitudinal slot 7, while the cover band 25 lies outside the piston 10 in a longitudinal groove 30 which is also arranged symmetrically to the longitudinal slot 7, which at the same time gives it lateral guidance and the base 31 of which absorbs the pressure medium. The sealing tape 25 is provided with two wedge-shaped sealing lips or strips 32, which interact with corresponding sealing surfaces 33 in the region of the cylinder bore 2. The cover tape 27 holds the sealing tape 25 by means of two releasable connecting members, which in the form of a web 34 and a cross-section which are essentially wedge-shaped in cross-section and are formed on the sealing tape 25 the cover band 27 are also provided correspondingly wedge-shaped profiled edge-open longitudinal groove 35. The two connecting elements 34, 35 are released from each other during the forward movement of the piston and the spreading of the two bands 25, 27 caused thereby by the band expansion part 26, while they are brought into engagement with one another on the other side of the piston by the piston 10 and the pressure part 28, so that they assume the state of FIG. 3.

Claims (10)

1. Druckmittelzylinder mit einem längsgeschlitzten endseitig verschlossenen Zylinderrohr, in dem ein abgedichteter Kolben längsverschieblich geführt ist und dessen Längsschlitz beiderseits des Kolbens durch ein innenliegendes biegsames Abdeckband abgedichtet ist, das im Bereiche des Kolbens unter einem durch den Längsschlitz nach außen ragenden, mit dem Kolben unmittelbar verbundenen Kraftübertragungselement hindurchgeführt ist, wobei das Kraftübertragungselement über eine mit dem Zylinderrohr starr verbundene, wenigstens zwei außerhalb des Zylinderrohres liegende Führungsbahnen aufweisende Parallelführung längsgeführt ist, dadurch gekennzeichnet, daß zu beiden Seiten des Längsschlitzes (7) unmittelbar auf der Außenseite des Zylinderrohres (1) wenigstens zwei parallele Führungsbahnen (18) in dem Bereich zwischen der äußeren Berandung des Längsschlitzes (7) und der die Kolbenachse enthaltenden Symmetrieebene (23) angeordnet sind, und daß das Kraftübertragungselement (14) ein das Zylinderrohr (1) bis auf die Höhe der Führungsbahnen (18) übergreifendes bügelartiges Führungsteil (16) aufweist, das seitlich gegen die Führungsbahnen (18) abgestützt ist.1.Pressure medium cylinder with a longitudinally slotted cylinder tube which is closed at the end, in which a sealed piston is guided in a longitudinally displaceable manner and the longitudinal slot of which is sealed on both sides of the piston by an internal flexible cover strip which is in the area of the piston under a protruding through the longitudinal slot, with the piston directly connected force transmission element is guided, the force transmission element being guided longitudinally via a parallel guide rigidly connected to the cylinder tube and having at least two guideways lying outside the cylinder tube, characterized in that on both sides of the longitudinal slot (7) directly on the outside of the cylinder tube (1) at least Two parallel guideways (18) are arranged in the area between the outer edge of the longitudinal slot (7) and the plane of symmetry (23) containing the piston axis, and that the force transmission element (14) is a cylinder tube (1) up to the height of the guideways (18) overlapping bow-like guide part (16) which is supported laterally against the guideways (18). 2. Druckmittelzylinder nach Anspruch 1, dadurch gekennzeichnet, daß das Zylinderrohr (1) zumindest auf einer Seite des Längsschlitzes (7) zwei paarweise übereinanderliegende parallele Führungsbahnen (18, 18a) trägt.2. Pressure cylinder according to claim 1, characterized in that the cylinder tube (1) carries at least on one side of the longitudinal slot (7) two pairs of parallel guide tracks (18, 18a) one above the other. 3. Druckmittelzylinder nach Anspruch 2, dadurch gekennzeichnet, daß die beiden paarweise übereinanderliegenden Führungsbahnen (18,18a) jeweils oberhalb und unterhalb der die Kolbenachse enthaltenden Symmetrieebene (23) liegen.3. Pressure medium cylinder according to claim 2, characterized in that the two guide tracks (18, 18a) lying one above the other in pairs each lie above and below the plane of symmetry containing the piston axis (23). 4. Druckmittelzylinder nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die beidseitig des Längsschlitzes (7) liegenden Führungsbahnen (18, 18a) mit ihrer Mittelachse jeweils in einer durch die Kolbenachse (3) verlaufenden Ebene liegen, die mit der Längsmittelebene (22) des Längsschlitzes (7) einen Winkel (d) von ca. 45° einschließt.4. Pressure medium cylinder according to one of the preceding claims, characterized in that the guide tracks (18, 18a) lying on both sides of the longitudinal slot (7) lie with their central axes in each case in a plane running through the piston axis (3) and with the longitudinal central plane (22) of the longitudinal slot (7) encloses an angle (d) of approximately 45 °. 5. Druckmittelzylinder nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Führungsbahnen durch an der Zylinderrohraußenwand oder dem Führungsteil (16) angeordnete Längsnuten (18,18a) gebildet sind.5. Pressure medium cylinder according to one of the preceding claims, characterized in that the guideways are formed by longitudinal grooves (18, 18a) arranged on the outer wall of the cylinder tube or the guide part (16). 6. Druckmittelzylinder nach Anspruch 5, dadurch gekennzeichnet, daß die Längsnuten (18,18a) eine prismatische Gestalt aufweisen.6. Pressure medium cylinder according to claim 5, characterized in that the longitudinal grooves (18, 18a) have a prismatic shape. 7. Druckmittelzylinder nach Anspruch 5 oder 6, dadurch gekennzeichnet, daß das Führungsteil (16) über Führungsleisten (19,19a) gegen die Längsnuten (18,18a) abgestützt ist.7. Pressure medium cylinder according to claim 5 or 6, characterized in that the guide part (16) is supported via guide strips (19, 19a) against the longitudinal grooves (18, 18a). 8. Druckmittelzylinder nach Anspruch 7, dadurch gekennzeichnet, daß die Führungsleisten (19,19a) aus einem verschleißfesten, reibungsarmen Material, vorzugsweise einem Kunststoffmaterial, bestehen.8. Pressure cylinder according to claim 7, characterized in that the guide strips (19, 19a) consist of a wear-resistant, low-friction material, preferably a plastic material. 9.-Druckmittelzylinder nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Führungsteil (16) nachstellbar gegen die Führungsbahnen (18, 18a) abgestützt ist.9. pressure medium cylinder according to one of the preceding claims, characterized in that the guide part (16) is adjustably supported against the guide tracks (18, 18a). 10. Druckmittelzylinder nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Führungsteil (16) über Wälzkörper gegen die Führungsbahnen (18, 18a) abgestützt ist.10. Pressure medium cylinder according to one of the preceding claims, characterized in that the guide part (16) is supported via rolling elements against the guide tracks (18, 18a).
EP82103023A 1981-06-25 1982-04-08 Fluid pressure actuator with slotted cylinder and sealed ends Expired EP0068088B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82103023T ATE11951T1 (en) 1981-06-25 1982-04-08 PRESSURE MEDIUM CYLINDER WITH A CYLINDER TUBE WITH LONGITUDINALLY SLOTS AND CLOSED END.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3124915 1981-06-25
DE3124915A DE3124915C2 (en) 1981-06-25 1981-06-25 Pressure cylinder with a longitudinally slotted cylinder tube closed at the end

Publications (2)

Publication Number Publication Date
EP0068088A1 true EP0068088A1 (en) 1983-01-05
EP0068088B1 EP0068088B1 (en) 1985-02-20

Family

ID=6135322

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82103023A Expired EP0068088B1 (en) 1981-06-25 1982-04-08 Fluid pressure actuator with slotted cylinder and sealed ends

Country Status (4)

Country Link
EP (1) EP0068088B1 (en)
AT (1) ATE11951T1 (en)
DE (1) DE3124915C2 (en)
DK (1) DK151052C (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983002306A1 (en) * 1981-12-22 1983-07-07 Mecman Ab Device at a pressure fluid cylinder without piston rod
EP0086885A2 (en) * 1982-02-13 1983-08-31 PROMA Produkt- und Marketing Gesellschaft m.b.H. Mechanical linear unit
EP0113790A1 (en) * 1983-01-14 1984-07-25 PROMA Produkt- und Marketing Gesellschaft m.b.H. Pressure cylinder with a longitudinally slotted barrel closed at both ends
FR2562206A1 (en) * 1984-03-30 1985-10-04 Festo Kg GUIDING DEVICE FOR THE LINEAR MOTION OUTPUT ELEMENT OF A MOTOR FOR TAKING MOTOR FORCE
US4545290A (en) * 1983-12-23 1985-10-08 Tol-O-Matic, Inc. Pressure cylinder
US4601234A (en) * 1983-11-08 1986-07-22 Origa Gmbh Pneumatik Pressure cylinder
EP0234033A2 (en) * 1985-12-18 1987-09-02 Tol-O-Matic, Inc. Carrier bracket for power cylinder
EP0177850B1 (en) * 1982-08-05 1987-11-25 Knorr-Bremse Ag Rodless hydraulic ram
US4838147A (en) * 1988-01-26 1989-06-13 Grigory Grishchenko Pressure fluid actuator
US5138935A (en) * 1990-02-09 1992-08-18 Hygrama Ag Arrangement for attaching a rail to a piston-cylinder type control device
US5178056A (en) * 1990-08-31 1993-01-12 Airtec Pneumatik Gmbh Fluid driven working cylinder without a piston rod
AT403502B (en) * 1994-11-30 1998-03-25 Hygrama Ag PISTONLESS PRESSURE CYLINDER
US6257123B1 (en) 1997-10-24 2001-07-10 Phd, Inc. Rodless slides
US6283010B1 (en) * 1998-07-01 2001-09-04 Hygrama Ag Piston rod-less pneumatic cylinder

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3229305A1 (en) * 1982-08-05 1984-02-09 Knorr-Bremse GmbH, 8000 München Brake device for fluid-driven rodless working cylinders
CH660513A5 (en) * 1983-05-17 1987-04-30 Sft Ag Spontanfoerdertechnik DRIVING DEVICE WITH A FORCE TRANSMISSION FOLLOWING A GENERAL RAILWAY MOVEMENT.
DE3328786A1 (en) * 1983-08-10 1985-02-28 Robert Bosch Gmbh, 7000 Stuttgart PISTONLESS WORK CYLINDER
DE3330933C2 (en) * 1983-08-27 1995-12-07 Franco Toss Lift cylinder unit
EP0157892B1 (en) * 1984-04-10 1987-06-24 Reinhard Lipinski Linear transporter
DE3436977A1 (en) * 1984-10-09 1986-04-10 Antriebs Steuerungstech Ges LINEAR ACTUATOR
EP0196572A3 (en) 1984-11-14 1987-05-27 Knorr-Bremse Ag Positioning device for a rodless actuator
DE3609605A1 (en) * 1986-03-21 1987-09-24 Festo Kg LINEAR MOTOR
DE3619473A1 (en) * 1986-06-10 1987-12-17 Knorr Bremse Ag Pressure medium-driven, piston rod-less working cylinder
DE3631514A1 (en) * 1986-09-17 1988-03-24 Proma Prod & Marketing Gmbh PRESSURE CYLINDER
JPH0765602B2 (en) * 1987-01-30 1995-07-19 豊和工業株式会社 Rotless dress cylinder
DE3807786A1 (en) * 1987-03-12 1988-09-22 Ckd Corp PISTONLESS CYLINDER
DE4024716A1 (en) 1990-08-03 1992-02-06 Knorr Bremse Ag PRESSURE CYLINDER WITH LENGTH SLIT CYLINDER PIPE
US5275088A (en) * 1991-10-11 1994-01-04 Smc Kabushiki Kaisha Rodless cylinder
JP2575245B2 (en) * 1991-11-01 1997-01-22 エスエムシー株式会社 Rodless cylinder
EP0542211B1 (en) * 1991-11-11 1997-04-23 Smc Kabushiki Kaisha Rodless cylinder
DE4137789C2 (en) * 1991-11-16 1994-01-20 Festo Kg linear actuator
DE4206751A1 (en) * 1992-03-04 1993-09-09 Festo Kg LINEAR ACTUATOR
US5333535A (en) * 1992-07-21 1994-08-02 Smc Kabushiki Kaisha Rodless cylinder
DE4334681C2 (en) * 1993-10-12 1995-09-28 Norgren Martonair Gmbh Movement unit for generating a linear movement
RU2659851C1 (en) * 2016-11-24 2018-07-04 Федеральное государственное бюджетное учреждение науки Институт проблем управления им. В.А. Трапезникова Российской академии наук Multiposition pneumatic module of linear displacements

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE707679C (en) * 1935-02-05 1941-06-30 Francesco Merz Cylinder for a piston-operated acceleration device, in particular an aircraft sling
US2497916A (en) * 1945-04-24 1950-02-21 Henry J Stambaugh Launching or towing device
DE942179C (en) * 1955-03-19 1956-04-26 Brown Brothers & Co Ltd Cylinder and piston training
GB1394281A (en) * 1972-05-26 1975-05-14 Clarke Chapman Ltd Tool positioning and guiding equipment with hydraulic piston- and-cylinder device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2473430A (en) * 1945-05-19 1949-06-14 Le Roi Company Piston coupling mechanism
DE804632C (en) * 1949-07-19 1951-04-26 Brown Brothers & Co Ltd Cylinder and piston design
DE846493C (en) * 1950-10-12 1952-08-14 Brown Brothers & Co Ltd Cylinder and piston design
DE843482C (en) * 1950-12-16 1952-07-10 Brown Brothers & Co Slotted cylinder
DE2908605A1 (en) * 1979-03-05 1980-09-11 Geb Kotz Rosa Mueller Free-piston pneumatic cylinder - has ball-mounted carriage running on guide rails parallel to cylinder

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE707679C (en) * 1935-02-05 1941-06-30 Francesco Merz Cylinder for a piston-operated acceleration device, in particular an aircraft sling
US2497916A (en) * 1945-04-24 1950-02-21 Henry J Stambaugh Launching or towing device
DE942179C (en) * 1955-03-19 1956-04-26 Brown Brothers & Co Ltd Cylinder and piston training
GB1394281A (en) * 1972-05-26 1975-05-14 Clarke Chapman Ltd Tool positioning and guiding equipment with hydraulic piston- and-cylinder device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NAVY TECHNICAL DISCLOSURE BULLETIN, Band 4, Nr.11, November 1979, *

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983002306A1 (en) * 1981-12-22 1983-07-07 Mecman Ab Device at a pressure fluid cylinder without piston rod
EP0086885A2 (en) * 1982-02-13 1983-08-31 PROMA Produkt- und Marketing Gesellschaft m.b.H. Mechanical linear unit
EP0086885A3 (en) * 1982-02-13 1984-06-13 Proma Produkt- Und Marketing-Gesellschaft M.B.H. Mechanical linear unit
EP0177850B1 (en) * 1982-08-05 1987-11-25 Knorr-Bremse Ag Rodless hydraulic ram
EP0113790A1 (en) * 1983-01-14 1984-07-25 PROMA Produkt- und Marketing Gesellschaft m.b.H. Pressure cylinder with a longitudinally slotted barrel closed at both ends
US4601234A (en) * 1983-11-08 1986-07-22 Origa Gmbh Pneumatik Pressure cylinder
US4545290A (en) * 1983-12-23 1985-10-08 Tol-O-Matic, Inc. Pressure cylinder
AU581639B2 (en) * 1983-12-23 1989-03-02 Tol-O-Matic Inc. Pressure cylinder
US4682535A (en) * 1984-03-30 1987-07-28 Kurt Stoll Guide housing for the linearly moving output element of a cylinder actuator
FR2562206A1 (en) * 1984-03-30 1985-10-04 Festo Kg GUIDING DEVICE FOR THE LINEAR MOTION OUTPUT ELEMENT OF A MOTOR FOR TAKING MOTOR FORCE
GB2156480A (en) * 1984-03-30 1985-10-09 Festo Kg Guide housings for actuators
EP0234033B1 (en) * 1985-12-18 1991-03-20 Tol-O-Matic, Inc. Carrier bracket for power cylinder
EP0234033A2 (en) * 1985-12-18 1987-09-02 Tol-O-Matic, Inc. Carrier bracket for power cylinder
US4724744A (en) * 1985-12-18 1988-02-16 Tol-O-Matic, Inc. Carrier bracket for power cylinder
US4838147A (en) * 1988-01-26 1989-06-13 Grigory Grishchenko Pressure fluid actuator
US5138935A (en) * 1990-02-09 1992-08-18 Hygrama Ag Arrangement for attaching a rail to a piston-cylinder type control device
US5178056A (en) * 1990-08-31 1993-01-12 Airtec Pneumatik Gmbh Fluid driven working cylinder without a piston rod
EP0472862B1 (en) * 1990-08-31 1993-05-12 AIRTEC PNEUMATIC GmbH Fluid powered rodless cylinder
AT403502B (en) * 1994-11-30 1998-03-25 Hygrama Ag PISTONLESS PRESSURE CYLINDER
US6257123B1 (en) 1997-10-24 2001-07-10 Phd, Inc. Rodless slides
US6283010B1 (en) * 1998-07-01 2001-09-04 Hygrama Ag Piston rod-less pneumatic cylinder

Also Published As

Publication number Publication date
ATE11951T1 (en) 1985-03-15
DK151052B (en) 1987-10-19
EP0068088B1 (en) 1985-02-20
DK221782A (en) 1982-12-26
DE3124915C2 (en) 1984-10-31
DK151052C (en) 1988-03-14
DE3124915A1 (en) 1983-01-13

Similar Documents

Publication Publication Date Title
EP0068088B1 (en) Fluid pressure actuator with slotted cylinder and sealed ends
DE3802703C2 (en) Rodless cylinder arrangement
EP0737776B1 (en) Press for a paper machine or the like
EP0260344B1 (en) Pressure fluid cylinder
EP0026401B1 (en) Device for exerting a surface pressure on advancing workpieces
DE29517615U1 (en) Fluid operated cylinder
EP0069199A1 (en) Fluid pressure actuator
EP0157892A1 (en) Linear transporter
DE3304783C2 (en)
EP0141405B1 (en) Pressure fluid cylinder
DE806073C (en) Dynamic torsional vibration damper with pendulum mass without return spring for rotating shafts
EP0322509B1 (en) Linear transmission-unit
DE9318523U1 (en) Formwork panel with edge bars made of a flat extruded profile
DE3914889A1 (en) PISTONLESS WORK CYLINDER
DE1752851A1 (en) Hydraulic press frame and its manufacturing process
DE2718414C2 (en) Seal arrangement on a roller
DE2937412C2 (en) Piston assembly
DE68903972T2 (en) ARRANGEMENT WITH A PISTON-FREE PRESSURE CYLINDER.
EP0191919B1 (en) Seal assembly for mine props
EP0195740B1 (en) Box girder profile
DE20022353U1 (en) Clamping sleeve for machine tool and fixture construction
WO2010000683A1 (en) Bar arrangement for a machine for producing a fibrous web
DE102009057522B9 (en) Tubing construction with front ring encircling ring seal
DE2510436A1 (en) Hydraulic straightening press - has frame made from two plates designed to absorb vertical and horizontal stresses
EP0103852A1 (en) Rectilinear command

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

AK Designated contracting states

Designated state(s): AT BE CH FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19830114

ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): AT BE CH FR GB IT LI LU NL SE

REF Corresponds to:

Ref document number: 11951

Country of ref document: AT

Date of ref document: 19850315

Kind code of ref document: T

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

26N No opposition filed
ITPR It: changes in ownership of a european patent

Owner name: CESSIONE;NORGREN MARTONAIR EUROPA GMBH

NLS Nl: assignments of ep-patents

Owner name: NORGREN MARTONAIR EUROPA GMBH TE ALPEN, BONDSREPUB

REG Reference to a national code

Ref country code: CH

Ref legal event code: PUE

Owner name: NORGREN MARTONAIR EUROPA GMBH

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732

ITTA It: last paid annual fee
EPTA Lu: last paid annual fee
EAL Se: european patent in force in sweden

Ref document number: 82103023.6

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

Ref country code: AT

Payment date: 19980316

Year of fee payment: 17

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

Ref country code: SE

Payment date: 19980319

Year of fee payment: 17

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

Ref country code: NL

Payment date: 19980324

Year of fee payment: 17

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

Ref country code: LU

Payment date: 19980410

Year of fee payment: 17

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

Ref country code: LU

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 19990408

Ref country code: AT

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

Effective date: 19990408

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: 19990409

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: 19991101

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

Effective date: 19991101

EUG Se: european patent has lapsed

Ref document number: 82103023.6

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

Ref country code: FR

Payment date: 20010312

Year of fee payment: 20

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

Ref country code: GB

Payment date: 20010319

Year of fee payment: 20

Ref country code: CH

Payment date: 20010319

Year of fee payment: 20

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

Ref country code: BE

Payment date: 20010410

Year of fee payment: 20

BE20 Be: patent expired

Free format text: 20020408 *NORGREN MARTONAIR EUROPA G.M.B.H.

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: LI

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20020407

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20020407

Ref country code: CH

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20020407

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Effective date: 20020407

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL