EP0703370B1 - Actuator for a support element moving linearly - Google Patents
Actuator for a support element moving linearly Download PDFInfo
- Publication number
- EP0703370B1 EP0703370B1 EP95114729A EP95114729A EP0703370B1 EP 0703370 B1 EP0703370 B1 EP 0703370B1 EP 95114729 A EP95114729 A EP 95114729A EP 95114729 A EP95114729 A EP 95114729A EP 0703370 B1 EP0703370 B1 EP 0703370B1
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- EP
- European Patent Office
- Prior art keywords
- actuator
- pipe
- linear drive
- coupling
- stroke
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
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- 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
- F15B15/02—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member
- F15B15/06—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement
- F15B15/061—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement by unidirectional means
Definitions
- the invention relates to an actuator for a step by step linearly movable stored component according to the preamble of claim 1.
- Actuators with which a torque is to be transmitted to a component are in a wide variety of embodiments for a wide variety of applications known.
- One area of application is, for example, the actuation of Slides or valve members in fittings are another area of application for example rotating pipe distributors, where a central pipe has a pivotable pipe section can be connected to a series of exhaust pipes can.
- From CH-645 703 A is also known an actuator for a step-by-step linear Movable component to be provided with a double-acting stationary at one end connected linear drive, with a controllable coupling with driver and a controllable stationary brake with driver, the driver in clamping Engagement with the component can be brought and the clamping device via a ring piston with cone on a ball system and a clamping cone for Holding the component works.
- the known device serves primarily to a wire to apply a tension. Larger when used on pipes The known device is relatively expensive in diameter, in particular when adapting to different pipe diameters. Even application the clamping force is not guaranteed.
- the invention has for its object an actuator for a gradual to create linearly movable pipe, in particular of larger diameter, which does not affect the pipe with controlled application of higher forces and who builds relatively small.
- the actuator according to the invention also sees a double-acting linear drive in front. This can be coupled to the pipe via the controllable coupling.
- the Control device controls the forward and return stroke of the linear motor and the Actuation of the clutch such that the clutch in one stroke direction of the Linear actuator is activated and released in the opposite stroke direction.
- the linear motor is not designed so that with a single stroke, the maximum or the desired adjustment path on the contrary, the linear motor is designed so that it has a stroke only makes a limited adjustment of the tube and the desired adjustment path for example, is only achieved after a larger number of strokes. This is necessary that during the return stroke after a working stroke the connection between the drive and the pipe is canceled. In this case the clutch solved. With a new working stroke, the clutch is activated so that the linear motor the pipe can in turn be adjusted by an increment.
- the invention Actuator is therefore a stepper motor, the step frequency and step length variable is.
- the step frequency is determined by the adjustment speed of the Linear motor and the stroke length.
- the stride length is determined by the stroke length of the linear motor.
- Both values can therefore be used within a wide range thanks to the linear motor to be changed.
- the actuator In the stepwise working according to the invention There is no adjustment limit for the actuator.
- the one according to the invention Actuator can move the pipe as far as desired.
- the invention Actuator also has the advantage that it is very precise a pipe in a certain position can bring.
- the linear drive is in the invention of a fluid-operated double-acting Adjusting cylinder formed, which is arranged parallel to the tube at a distance.
- the Coupling can also be actuated differently, for example by one Fluid, electromagnetic or electromechanical. It is advantageous if the The linear drive and the clutch are actuated by the same means.
- control for controlling the adjusting cylinder and the coupling there are different types of control for controlling the adjusting cylinder and the coupling conceivable.
- the adjustment cylinder can be equipped with an end position sensor be assigned, which in turn can be adjustable to reverse the stroke of the adjusting cylinder to control and at the same time the activation or release of the clutch.
- a timer can be provided, which reverses the stroke and the clutch controls.
- the control device according to the invention can also be a control program included, the stroke of the adjusting cylinder and the synchronous actuation of the Clutch controls.
- the driver component of the clutches is a clutch belt or a tether, which is placed around the tube and with the help of a short-stroke adjusting cylinder is either tensioned or loosened.
- the actuator according to the invention according to the invention is made up of simple parts and to manufacture with little effort. It is extremely robust and requires little maintenance. Furthermore, he builds very small and does not affect the pipe to be moved by controlled Forces are applied. When changing the pipe diameter only the tapes need to be replaced.
- a straight tube 100 is through passed through an opening in a wall 102.
- the tube 100 is from a coupling ring a clutch 104 surrounded by two parallel ring elements exists, which are connected by yokes 106.
- a clutch band 108 is arranged in the distance between the ring elements.
- the coupling ring is articulated at 110 the piston rod 112 of an adjusting cylinder 114, at 116 on the wall 102 is articulated.
- a cranked at the ends is supported Yoke 116 over spaced bearing points 118, 120 between the ring elements of the coupling ring on pipe 100.
- the yoke holds a short stroke Adjusting cylinder 122 and at the other end a fastening bolt 124 for the other end of the clutch band.
- the adjusting cylinder 122 pulls the clutch band 108 on, it loops tightly around the tube 100, so that when actuated of the adjusting cylinder 114, the tube is linearly advanced according to the stroke, for example in a position which is shown in broken lines in FIG. 2.
- a retaining ring is almost the same as the coupling ring, namely two spaced ring elements which are connected to one another via yokes 106.
- the adjusting cylinder 130 While of the working stroke of the adjusting cylinder 114, in which he the Moving pipe 100, the adjusting cylinder 130 remains unactuated to this movement not to interfere.
- the Adjustment cylinder 130 actuated so that the tube 100 in the assumed position remains and is not moved in the opposite direction. In this way the tube 100 can be continuously moved back and forth step by step.
- FIGS. 3 and 4 show a circuit diagram for the actuator according to FIGS. 1 and 2 shown for both possible directions.
- a solenoid valve 92 controls the pressurization of the adjusting cylinder 114 and a solenoid valve 94 the pressurization of the adjusting cylinder 122. Since the lines to the adjusting cylinder 122 are connected to the lines to the adjusting cylinder 114, determines the position of the valve 54 when the adjusting cylinder 122 is actuated.
- the Valve 92 is connected to a pressure medium source, not shown, for example Compressed air source, connected.
- a controller 146 is assigned to the valves 92, 94, which ensures an adjustment of the valves, in particular for the reversal of the stroke of the Adjusting cylinder 114.
- the controller 146 is, for example, with limit switch S1 and S2 for the adjusting cylinder 114, which are adjustable.
- the stroke reversal control can also be from a timer or part of a program be formed, by which the stroke of the adjusting cylinder 114 is predetermined, as well as the pressure, which is the speed of displacement of the displacement cylinder 114 certainly. If the adjusting cylinder 114 has ended the stroke described, that will Valve 92 switched. The valve 94, however, remains in the assumed position. The adjusting cylinder 114 therefore begins its return stroke. Now there is an exit depressurized by valve 94, clutch band 158 relaxed by drive 122.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
- Braking Arrangements (AREA)
Description
Die Erfindung bezieht sich auf einen Stellantrieb für ein schrittweise linear bewegbar gelagertes Bauteil nach dem Oberbegriff des Patentanspruchs 1.The invention relates to an actuator for a step by step linearly movable stored component according to the preamble of claim 1.
Stellantriebe, mit denen ein Drehmoment auf ein Bauteil übertragen werden soll, sind in den verschiedensten Ausführungsformen für die verschiedensten Anwendungszwecke bekanntgeworden. An Anwendungsgebiet ist zum Beispiel die Betätigung von Schiebern oder Ventilgliedern bei Armaturen Ein anderes Anwendungsgebiet sind zum Beispiel rotierende Rohrverteiler, bei denen ein zentrales Rohr über ein schwenkbares Rohrstück mit einer Reihe von abführenden Rohren verbunden werden kann. Actuators with which a torque is to be transmitted to a component are in a wide variety of embodiments for a wide variety of applications known. One area of application is, for example, the actuation of Slides or valve members in fittings are another area of application for example rotating pipe distributors, where a central pipe has a pivotable pipe section can be connected to a series of exhaust pipes can.
Aus DE-B-1 116 361 und FR-A-1 476 046 ist bekannt, mit Hilfe eines Linearmotors ein Spannband, das um ein Rohr herumgelegt ist, anzuziehen bzw. zu lockern und mit Hilfe des Spannbandes das Rohr zu drehen.From DE-B-1 116 361 and FR-A-1 476 046 it is known, using a linear motor tighten or loosen a tensioning strap that is placed around a pipe and with Use the tensioning strap to turn the pipe.
Aus CH-645 703 A ist ferner bekannt, einen Stellantrieb für ein schrittweise linear bewegbares Bauteil vorzusehen mit einem doppelt wirkenden an einem Ende stationär angebundenen Linearantrieb, mit einer steuerbaren Kupplung mit Mitnehmer und einer steuerbaren stationären Bremse mit Mitnehmer, wobei die Mitnehmer in klemmenden Eingriff mit dem Bauteil gebracht werden können und die Klemmvorrichtung über einen Ringkolben mit Konus auf ein Kugelsystem und einen Klemmkonus zum Halten des Bauteils wirkt. Die bekannte Vorrichtung dient in erster Linie dazu, auf einen Draht eine Spannung aufzubringen. Bei einer Anwendung auf Rohre größeren Durchmessers ist die bekannte Vorrichtung verhältnismäßig aufwendig, insbesondere bei einer Anpassung auf unterschiedliche Rohrdurchmesser. Eine gleichmäßige Aufbringung der Klemmkraft ist nicht gewährleistet.From CH-645 703 A is also known an actuator for a step-by-step linear Movable component to be provided with a double-acting stationary at one end connected linear drive, with a controllable coupling with driver and a controllable stationary brake with driver, the driver in clamping Engagement with the component can be brought and the clamping device via a ring piston with cone on a ball system and a clamping cone for Holding the component works. The known device serves primarily to a wire to apply a tension. Larger when used on pipes The known device is relatively expensive in diameter, in particular when adapting to different pipe diameters. Even application the clamping force is not guaranteed.
Der Erfindung liegt die Aufgabe zugrunde, einen Stellantrieb für ein schrittweise linear bewegbares Rohr, insbesondere von größerem Durchmesser, zu schaffen, welcher das Rohr mit kontrollierter Aufbringung höherer Kräfte nicht beeinträchtigt und der relativ klein baut.The invention has for its object an actuator for a gradual to create linearly movable pipe, in particular of larger diameter, which does not affect the pipe with controlled application of higher forces and who builds relatively small.
Diese Aufgabe wird gelöst durch die Merkmale des Patentanspruchs 1. This object is achieved by the features of patent claim 1.
Der erfindungsgemäße Stellantrieb sieht ebenfalls einen doppelt wirkenden Linearantrieb vor. Dieser ist über die steuerbare Kupplung mit dem Rohr koppelbar. Die Steuervorrichtung steuert den Vor- und den Rückhub des Linearmotors sowie die Betätigung der Kupplung dergestalt, daß die Kupplung in der einen Hubrichtung des Linearantriebs aktiviert und in der entgegengesetzten Hubrichtung gelöst wird.The actuator according to the invention also sees a double-acting linear drive in front. This can be coupled to the pipe via the controllable coupling. The Control device controls the forward and return stroke of the linear motor and the Actuation of the clutch such that the clutch in one stroke direction of the Linear actuator is activated and released in the opposite stroke direction.
Bei dem erfindungsgemäßen Stellantrieb ist der Linearmotor nicht so ausgebildet, daß mit einem einzelnen Hub bereits der maximale oder der gewünschte Verstellweg erreicht wird, im Gegenteil, der Linearmotor ist so ausgelegt, daß er bei einem Hub nur eine begrenzte Verstellung des Rohrs vornimmt und der gewünschte Verstellweg beispielsweise erst nach einer größeren Anzahl von Hüben erreicht wird. Hierzu ist notwendig, daß während des Rückhubs nach einem Arbeitshub die Verbindung zwischen dem Antrieb und dem Rohr aufgehoben ist. In diesem Fall wird die Kupplung gelöst. Bei einem neuen Arbeitshub wird die Kupplung aktiviert, so daß der Linearmotor das Rohr wiederum um ein Inkrement verstellen kann. Der erfindungsgemäße Stellantrieb ist mithin ein Schrittmotor, dessen Schrittfrequenz und Schrittlänge variabel ist. Die Schrittfrequenz wird bestimmt durch die Verstellgeschwindigkeit des Linearmotors und die Hublänge. Die Schrittlänge wird bestimmt durch die Hublänge des Linearmotors. Beide Werte können mithin in weiten Grenzen durch den Linearmotor verändert werden. Bei dem schrittweise arbeitenden erfindungsgemäßen Stellantrieb existiert eine Verstellgrenze nicht. Mit anderen Worten, der erfindungsgemäße Stellantrieb kann das Rohr beliebig weit verschieben. Der erfindungsgemäße Stellantrieb hat ferner den Vorteil, daß er sehr genau ein Rohr in eine bestimmte Position bringen kann.In the actuator according to the invention, the linear motor is not designed so that with a single stroke, the maximum or the desired adjustment path on the contrary, the linear motor is designed so that it has a stroke only makes a limited adjustment of the tube and the desired adjustment path for example, is only achieved after a larger number of strokes. This is necessary that during the return stroke after a working stroke the connection between the drive and the pipe is canceled. In this case the clutch solved. With a new working stroke, the clutch is activated so that the linear motor the pipe can in turn be adjusted by an increment. The invention Actuator is therefore a stepper motor, the step frequency and step length variable is. The step frequency is determined by the adjustment speed of the Linear motor and the stroke length. The stride length is determined by the stroke length of the linear motor. Both values can therefore be used within a wide range thanks to the linear motor to be changed. In the stepwise working according to the invention There is no adjustment limit for the actuator. In other words, the one according to the invention Actuator can move the pipe as far as desired. The invention Actuator also has the advantage that it is very precise a pipe in a certain position can bring.
Der Linearantrieb ist bei der Erfindung von einem fluidbetätigten doppelt wirkenden Verstellzylinder gebildet, der parallel im Abstand zum Rohr angeordnet ist. Die Kupplung kann ebenfalls unterschiedlich betätigt sein, beispielsweise von einem Fluid, elektromagnetisch oder elektromechanisch. Dabei ist es von Vorteil, wenn die Betätigung des Linearantriebs und der Kupplung durch gleiche Mittel erfolgt.The linear drive is in the invention of a fluid-operated double-acting Adjusting cylinder formed, which is arranged parallel to the tube at a distance. The Coupling can also be actuated differently, for example by one Fluid, electromagnetic or electromechanical. It is advantageous if the The linear drive and the clutch are actuated by the same means.
Wesentlich für die Erfindung ist auch, daß während des freien Hubs des Verstellzylinders das während des Arbeitshubs mitgenommene Rohr nicht wieder zurückgenommen wird, auch nicht teilweise. Es ist daher bei der Erfindung eine bezüglich des Rohrs stationäre Bremse vorgesehen, die von der Steuervorrichtung so gesteuert wird, daß sie im Wechsel mit der Kupplung aktiviert und gelöst wird. Die Bremse wird mithin während des freien Hubs des Verstellzylinders aktiviert, um das Rohr in der eingenommenen Position zu halten. Die Bremse hat auch den weiteren Vorteil, daß sie während der Ruhestellung die Relativposition des Rohrs sichert.It is also essential for the invention that during the free stroke of the adjusting cylinder not take back the pipe taken during the working stroke not even partially. It is therefore in relation to the invention Rohrs stationary brake provided, which is controlled by the control device so that it is activated and released alternately with the clutch. The brake is therefore activated during the free stroke of the adjusting cylinder to the tube in the ingested Hold position. The brake also has the further advantage that it secures the relative position of the pipe during the rest position.
Für die Ansteuerung des Verstellzylinders und der Kupplung sind verschiedene Steuerungsarten denkbar. So kann zum Beispiel dem Verstellzylinder ein Endlagengeber zugeordnet sein, der seinerseits verstellbar sein kann, um die Hubumkehr des Verstellzylinders zu steuern und gleichzeitig die Aktivierung bzw. Lösung der Kupplung. Alternativ kann ein Zeitgeber vorgesehen sein, der die Hubumkehr und die Kupplung steuert. Schließlich kann die erfindungsgemäße Steuervorrichtung auch ein Steuerprogramm enthalten, das den Hub des Verstellzylinders und die synchrone Betätigung der Kupplung steuert.There are different types of control for controlling the adjusting cylinder and the coupling conceivable. For example, the adjustment cylinder can be equipped with an end position sensor be assigned, which in turn can be adjustable to reverse the stroke of the adjusting cylinder to control and at the same time the activation or release of the clutch. Alternatively, a timer can be provided, which reverses the stroke and the clutch controls. Finally, the control device according to the invention can also be a control program included, the stroke of the adjusting cylinder and the synchronous actuation of the Clutch controls.
Bei der Erfindung wird das Mitnehmerbauteil der Kupplungen von einem Kupplungsband bzw. einem Halteband gebildet, das um das Rohr herumgelegt und mit Hilfe eines kurzhubigen Verstellzylinders wahlweise gespannt oder gelockert ist.In the invention, the driver component of the clutches is a clutch belt or a tether, which is placed around the tube and with the help of a short-stroke adjusting cylinder is either tensioned or loosened.
Der Stellantrieb nach der Erfindung nach der Erfindung ist aus einfachen Teilen aufgebaut und mit wenig Aufwand herzustellen. Er ist äußerst robust und wartungsarm. Ferner baut er sehr klein und beeinträchtigt das zu bewegende Rohr nicht, indem kontrollierte Kräfte aufgebracht werden. Bei einer Änderung des Rohrdurchmessers müssen lediglich die Bänder ausgetauscht werden.The actuator according to the invention according to the invention is made up of simple parts and to manufacture with little effort. It is extremely robust and requires little maintenance. Furthermore, he builds very small and does not affect the pipe to be moved by controlled Forces are applied. When changing the pipe diameter only the tapes need to be replaced.
Die Erfindung wird nachfolgend anhand von Zeichnungen näher erläutert.
- Fig. 1
- zeigt die Seitenansicht eines Ausführungsbeispiels eines Stellantriebs nach der Erfindung.
- Fig 2
- zeigt die Seitenansicht des Stellantriebs nach Fig. 1.
- Fig. 3
- zeigt ein Schaltschema zur Steuerung des Stellantriebs nach Fig. 1 und
- Fig. 4
- zeigt das Schaltschema nach Fig. 3 für die entgegengesetzte Richtung wie in Fig. 3.
- Fig. 1
- shows the side view of an embodiment of an actuator according to the invention.
- Fig. 2
- shows the side view of the actuator of FIG. 1st
- Fig. 3
- shows a circuit diagram for controlling the actuator of FIG. 1 and
- Fig. 4
- 3 shows the circuit diagram according to FIG. 3 for the opposite direction as in FIG. 3.
Bei der Ausführungsform nach den Figuren 1 und 2 ist ein gerades Rohr 100 durch
eine Öffnung in einer Wand 102 hindurchgeführt. Das Rohr 100 ist von einem Kupplungsring
einer Kupplung 104 umgeben, der aus zwei parallelen Ringelementen
besteht, die durch Joche 106 verbunden sind. In dem Abstand zwischen den Ringelementen
ist ein Kupplungsband 108 angeordnet. An den Kupplungsring greift gelenkig
bei 110 die Kolbenstange 112 eines Verstellzylinders 114 an, der bei 116 an der Wand
102 angelenkt ist. Wie aus Fig. 1 hervorgeht, stützt sich ein an den Enden abgekröpftes
Joch 116 über beabstandete Lagerpunkte 118, 120 zwischen den Ringelementen
des Kupplungsrings am Rohr 100 ab. Am anderen Ende hält das Joch einen kurzhubigen
Verstellzylinder 122 und am anderen Ende einen Befestigungsbolzen 124 für
das andere Ende des Kupplungsbandes. Zieht der Verstellzylinder 122 das Kupplungsband
108 an, schlingt es sich fest um das Rohr 100, so daß bei einer Betätigung
des Verstellzylinders 114 das Rohr entsprechend dem Hub linear vorbewegt wird, beispielsweise
in eine Position, die in Fig. 2 strichpunktiert dargestellt ist. In the embodiment according to FIGS. 1 and 2, a
Ein Haltering ist nahezu gleich wie der Kupplungsring aufgebaut, nämlich aus zwei
beabstandeten Ringelementen, die über Joche 106 miteinander verbunden sind. Ein
Halteband 128, das dem Kupplungsband 108 gleicht, ist um das Rohr 100 innerhalb
der Ringelemente herumgeschlungen und am einen Ende mit einem kurzhubigen Verstellzylinder
130 und am anderen Ende mit einem Befestigungsbolzen verbunden, wie
dies in Verbindung mit dem Kupplungsband 108 bereits beschrieben wurde. Während
des Arbeitshubes des Verstellzylinders 114, in dem er in der beschriebenen Weise das
Rohr 100 vorbewegt, bleibt der Verstellzylinder 130 unbetätigt, um diese Bewegung
nicht zu beeinträchtigen. Während des Rückhubs des Verstellzylinders 114 wird der
Verstellzylinder 130 betätigt, so daß das Rohr 100 in der eingenommenen Position
verbleibt und nicht in die entgegengesetzte Richtung verstellt wird. Auf diese Weise
kann das Rohr 100 kontinuierlich schrittweise vor- bzw. zurückbewegt werden.A retaining ring is almost the same as the coupling ring, namely two
spaced ring elements which are connected to one another via
Die Steuerung der Verstellzylinder erfolgt in der Weise, wie dies in Verbindung mit den Figuren 3 und 4 erläutert wird.The adjustment cylinders are controlled in the manner in connection with this Figures 3 and 4 is explained.
In den Figuren 3 und 4 ist ein Schaltschema für den Stellantrieb nach den Figuren 1
und 2 dargestellt für beide in Frage kommende Richtungen. Ein Magnetventil 92
steuert die Druckbeaufschlagung des Verstellzylinders 114 und ein Magnetventil 94
die Druckbeaufschlagung des Verstellzylinders 122. Da die Leitungen zum Verstellzylinder
122 an die Leitungen zum Verstellzylinder 114 angeschlossen sind,
bestimmt die Stellung des Ventils 54, wann der Verstellzylinder 122 betätigt wird. Das
Ventil 92 ist an eine nicht näher dargestellte Druckmittelquelle, beispielsweise
Druckluftquelle, angeschlossen. Den Ventilen 92, 94 ist eine Steuerung 146 zugeordnet,
die für eine Verstellung der Ventile sorgt, insbesondere für die Hubumkehr des
Verstellzylinders 114. Die Steuerung 146 ist zum Beispiel mit Endlagenschalter S1
und S2 für den Verstellzylinder 114 verbunden, die verstellbar sind. Die Hubumkehrsteuerung
kann jedoch auch von einem Zeitgeber oder einem Teil eines Programms
gebildet sein, durch welches der Hub des Verstellzylinders 114 vorgegeben wird,
ebenso wie der Druck, der die Verstellgeschwindigkeit des Verstellzylinders 114
bestimmt. Hat der Verstellzylinder 114 den beschriebenen Hub beendet, wird das
Ventil 92 umgeschaltet. Das Ventil 94 bleibt hingegen in der eingenommenen Position.
Der Verstellzylinder 114 beginnt daher seinen Rückhub. Nunmehr ist ein Ausgang
vom Ventil 94 drucklos, das Kupplungsband 158 durch Antrieb 122 entspannt.
Das bedeutet, daß der Antriebsring frei beweglich ist und daher vom Verstellzylinder
114 in seine Anfangsstellung zurückbewegt wird, während das Rohr 100 über das
Halteband 128 festgehalten wird, damit er diese Rückbewegung nicht mitmacht. Nach
Beendigung des Rückhubs der Kupplung 104 erfolgt wiederum eine Umschaltung des
Ventils 92, so daß der Zyklus erneut beginnen kann. Auf diese Weise wird das Rohr
100 schrittweise bewegt, wobei die Frequenz der Schritte vom Hub und der Verstellgeschwindigkeit
des Verstellzylinders 114 abhängt. Die Länge des einzelnen Schrittes
hängt vom Hub des Verstellzylinders 114 ab.FIGS. 3 and 4 show a circuit diagram for the actuator according to FIGS. 1
and 2 shown for both possible directions. A
Claims (4)
- An actuator for a linearly stepwise movable element comprising a double-acting linear drive means (114) stationary connected to one end, a controllable coupling means (104) connected to the other end of the linear drive means (114), wherein the coupling means having a ring-shaped adjusting means (108) and embracing the movable element (100), the ring-shaped means being adapted responsive to a manipulation of a control system to clampingly engage the element selectively, and a controllable stationary brake spaced from the coupling means (104) having a ring-shaped adjusting means (108) embracing the element (100) and being adapted to clampingly engage the element (100) selecticvely in response to a manipulation of the control system, characterized in thatthe element (100) is a pipe,the linear drive means is a double-acting servo cylinder which extends in spaced relationship parallel to the pipe,a coupling band or a retaining band, respectively, as adjusting means is looped around the pipe, wherein one end of the band is connected to a yoke (106) which is supported on the pipe, while the other end is connected to a servo cylinder having a short stroke and positioned on the yoke (106).
- The actuator of claim 1, characterized in that the linear drive means includes end position sensors for controlling in synchronism the stroke reversal of the linear drive means and actuating the coupling or the brake, respectively.
- The actuator of claim 1 or 2, characterized in that the control system includes a time generator for controlling in synchronism the stroke reversal of the linear drive means and actuating the coupling means, respectively.
- The actuator of claim 1 or 2, characterized in that the control system includes a control program controlling the motion of the linear drive means and actuating in synchronism the coupling means.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE9108533U | 1991-07-11 | ||
| DE9108533U DE9108533U1 (en) | 1991-07-11 | 1991-07-11 | Actuator for a rotatably or linearly movable component |
| EP92109427A EP0522289B1 (en) | 1991-07-11 | 1992-06-04 | Actuator for a rotatable or linear element |
Related Parent Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92109427A Division-Into EP0522289B1 (en) | 1991-07-11 | 1992-06-04 | Actuator for a rotatable or linear element |
| EP92109427.2 Division | 1992-06-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0703370A1 EP0703370A1 (en) | 1996-03-27 |
| EP0703370B1 true EP0703370B1 (en) | 2000-03-08 |
Family
ID=6869172
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95114729A Expired - Lifetime EP0703370B1 (en) | 1991-07-11 | 1992-06-04 | Actuator for a support element moving linearly |
| EP92109427A Expired - Lifetime EP0522289B1 (en) | 1991-07-11 | 1992-06-04 | Actuator for a rotatable or linear element |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92109427A Expired - Lifetime EP0522289B1 (en) | 1991-07-11 | 1992-06-04 | Actuator for a rotatable or linear element |
Country Status (2)
| Country | Link |
|---|---|
| EP (2) | EP0703370B1 (en) |
| DE (3) | DE9108533U1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7497156B2 (en) | 2006-10-31 | 2009-03-03 | Caterpillar Inc. | Fluid motor |
| US11175071B2 (en) * | 2018-12-29 | 2021-11-16 | Mechatron Solar | Zero backlash gearless rotary actuator usable with solar panels |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1116361B (en) * | 1959-08-20 | 1961-11-02 | Demag Zug Gmbh | Slewing gear for mobile cranes |
| BE676567A (en) * | 1966-02-16 | 1966-07-18 | ROTARY DEVICE MOVEMENT CONTROL DEVICE | |
| DE1301684B (en) * | 1966-10-06 | 1969-08-21 | Bade & Co Gmbh | Hydraulic drive gear for very high torques |
| NL7107756A (en) * | 1970-06-09 | 1971-12-13 | ||
| FR2211092A5 (en) * | 1972-12-15 | 1974-07-12 | Expl Usines Metallurg | |
| AT361181B (en) * | 1978-12-18 | 1981-02-25 | Vorspann Technik Gmbh | LIFTING AND LOWERING DEVICE |
| CH645703A5 (en) * | 1982-01-29 | 1984-10-15 | Gilbert Petit | Linear step-wise driving device |
| IT1229712B (en) * | 1989-05-12 | 1991-09-07 | Riva Calzoni Spa | MULTIPLE LINEAR WINCH WITH PROGRAMMED CONTROL FOR CONTINUOUS MOVEMENT OF THE TRACTION ROPE. |
-
1991
- 1991-07-11 DE DE9108533U patent/DE9108533U1/en not_active Expired - Lifetime
-
1992
- 1992-06-04 DE DE59205817T patent/DE59205817D1/en not_active Expired - Fee Related
- 1992-06-04 EP EP95114729A patent/EP0703370B1/en not_active Expired - Lifetime
- 1992-06-04 EP EP92109427A patent/EP0522289B1/en not_active Expired - Lifetime
- 1992-06-04 DE DE59209818T patent/DE59209818D1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE59205817D1 (en) | 1996-05-02 |
| DE59209818D1 (en) | 2000-04-13 |
| EP0522289B1 (en) | 1996-03-27 |
| EP0522289A1 (en) | 1993-01-13 |
| EP0703370A1 (en) | 1996-03-27 |
| DE9108533U1 (en) | 1991-09-12 |
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