EP0331854A1 - Fluid actuator for driving a rotary shaft - Google Patents

Fluid actuator for driving a rotary shaft Download PDF

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Publication number
EP0331854A1
EP0331854A1 EP88400548A EP88400548A EP0331854A1 EP 0331854 A1 EP0331854 A1 EP 0331854A1 EP 88400548 A EP88400548 A EP 88400548A EP 88400548 A EP88400548 A EP 88400548A EP 0331854 A1 EP0331854 A1 EP 0331854A1
Authority
EP
European Patent Office
Prior art keywords
aforesaid
piston
bore
operating shaft
actuator
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
EP88400548A
Other languages
German (de)
French (fr)
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EP0331854B1 (en
Inventor
Jean-Claude Garrigues
René Laulhe
Pierre Rieuvernet
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.)
Applications Mecaniques et Robinetterie Industrielle AMRI
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Applications Mecaniques et Robinetterie Industrielle AMRI
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Publication date
Application filed by Applications Mecaniques et Robinetterie Industrielle AMRI filed Critical Applications Mecaniques et Robinetterie Industrielle AMRI
Priority to DE198888400548T priority Critical patent/DE331854T1/en
Priority to DE8888400548T priority patent/DE3864814D1/en
Priority to ES88400548T priority patent/ES2010174B3/en
Priority to EP88400548A priority patent/EP0331854B1/en
Priority to JP1057665A priority patent/JPH01312206A/en
Priority to US07/321,195 priority patent/US4995305A/en
Publication of EP0331854A1 publication Critical patent/EP0331854A1/en
Application granted granted Critical
Publication of EP0331854B1 publication Critical patent/EP0331854B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F15B15/066—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 the motor being of the scotch yoke type

Definitions

  • the present invention relates to an actuator using a pressurized fluid for driving in rotation a rotary shaft.
  • This conversion device may advantageously comprise, in the manner described in patent FR 1 460 561 in the name of the Applicant, a nut integral with the cylinder rod on which is articulated a connecting rod, itself articulated on an arm of lever mounted fixedly on the control shaft of the valve, said connecting rod and said arm extending in planes orthogonal to the axis of said control shaft.
  • this conversion device is enclosed in a housing on which is attached the cylinder body, so that the cylinder rod passes inside the housing.
  • actuators of this kind in which the functionalities (motorization / conversion) are separated, have relatively complex structures using a relatively large number of workpieces (housing, cylinder body, cylinder assembly device on the housing, crankcase assembly device on the valve body, etc ). These actuators are consequently heavy, bulky and a relatively high manufacturing cost.
  • the invention therefore more particularly to simplify this structure, retaining the main advantages of this type of actuators, to obtain a more compact, lighter and more economical.
  • a jack comprising a body provided with a cylindrical bore within which a piston slides with sealing, this piston delimiting, within said bore, two chambers, at least one of which constitutes a working chamber into which a pressurized fluid inlet duct opens and, secondly, a device for converting rectilinear movement.
  • piston in a rotational movement of a drive shaft fully housed in said bore and directly actuated by the piston, said body comprising at least a first through-hole, substantially radial, through which said drive shaft to couple to said auditory conversion device, inside said bore.
  • this actuator is more particularly characterized in that this conversion device comprises at least one connecting rod whose one end is articulated on the piston and whose other end is articulated to a lever arm fixedly mounted on the aforesaid operating shaft, said connecting rod and said arm extending in planes orthogonal to the axis of said control shaft.
  • the operating shaft can be an integral part of the actuator and comprise means of coupling with the actuating shaft of the controlled device.
  • the cylinder body may advantageously comprise a second diametrically opposite orifice and coaxial with the first, the actuating shaft then being rotatably mounted at these two orifices.
  • This operating shaft may also consist of a section of the actuation shaft of the controlled device, which then engages in the bore of the cylinder body passing through at least one of said orifices.
  • the aforesaid cylinder is of double-acting type.
  • the piston defines, within the bore of the cylinder body, two opposite working chambers into which two respective inlet ducts open, one of the two chambers housing the aforesaid conversion device.
  • sealing means must be provided at the pivoting of the operating shaft in the orifices of the cylinder body.
  • the actuator comprises a tubular body 1 with a cylindrical bore 2, within which a piston 3 slides in sealed manner, this tubular body 1 being closed at each of its ends by a respective cylinder head 4, 5.
  • This piston 3 comprises at one of its ends a circular cap 6 of diameter substantially equal to that of the bore 2 and provided at its periphery with a seal (O-ring 7) which provides a sliding seal with the cylindrical surface of the bore 2.
  • This seal 6 thus delimits two chambers 8, 9 variable volume hermetically isolated from each other. It is held coaxially with the bore 2 by means of a guide element 10 consisting of a flat part which extends radially in the bore and has two circular edges 11, 12 opposite substantially to the diameter of the bore 2, provided with anti-friction linings, and two opposite edges 13, 14 optionally rectilinear which extend between the opposite ends of the circular edges 11, 12.
  • This guide element 10 is connected to the lid 6 by four axial spars 16, 17, 18 , 19 in the form of an angle disposed symmetrically with respect to the longitudinal axis of symmetry XX 'of the bore 2 with their concavities oriented away from said axis.
  • These longitudinal members 16 to 19 delimit between them an axially elongated free volume, of cruciform section which has two perpendicular branches 22, 23 and extends axially over a distance greater than the stroke of the piston 3.
  • the body 1 of the cylinder comprises two diametrically opposed substantially radial orifices 20, 21 which open into the bore 2 in line with one of the two branches 22, 23 of the free volume.
  • These orifices 20, 21 are equipped with bearings 24, 25 in which the ends of the operating shaft 26, which passes right through the bore 2, passing through the branch 23 of the cruciform free space, are rotatably mounted with sealing.
  • the branch 22 of the cruciform free space serves, as for it, to receive and to allow the movement of the elements of the device for converting the rectilinear motion of the piston 3 into a rotational movement of the operating shaft 26.
  • this device involves a lever 27 whose one end is fixedly mounted on the operating shaft 26, so as to extend substantially in the longitudinal median plane of the branch 22 and whose other end is articulated at one end of a pair of rods 28, 28 'by means of a transverse axis 29, and whose other end is pivotally mounted about a transverse axis 30 carried by the two side members 16, 17.
  • the two rods 28, 28 'of this pair extend on either side of the lever 27 and are held apart from each other at the axis 30 by means of a spacer sleeve 32.
  • this spacer sleeve 32 is then provided so as to maintain the ends of the rods 28, 28 'applied against the faces 33, 34 of the longitudinal members 16, 17 bordering the branch 22 of the cruciform free space, and thus to provide guiding permanent rods 28, 28 'during their pivoting.
  • the coupling of the operating shaft 26 and the control shaft of the controlled device is obtained by an engagement of a maneuvering square provided at the head of the control shaft, in a axial recess 35, of complementary shape, provided in the end 36 of the operating shaft 26.
  • the operating shaft 26 drives, at its other end, a signaling device 37 of the state of the actuator, housed in a housing 38 integral with the cylinder body.
  • the body has a prismatic shape delimiting two chambers extending axially side by side, namely: - a cylindrical chamber (defined by the bore 2), which is devolved to the supply of power, and - A chamber S, of substantially trapezoidal section, closed at both ends by two respective cylinder heads C1, C2, which can be used to receive an integrated signaling device (eg an electrical signaling device).
  • an integrated signaling device eg an electrical signaling device
  • This structure has the advantage of allowing the body to be produced by extrusion or by a similar process.
  • the operation of the actuator described above can be of simple effect or double effect type.
  • the chamber 8 may for example constitute the working chamber of the actuator.
  • the supply of this chamber 8 with fluid under pressure, for example compressed air, will be ensured by an axial duct 39 provided on the cylinder body, which communicates with the internal volume of the chamber 8 through an inlet port 40 .
  • the flow of the fluid contained in the chamber 9 which contains the conversion device 27, 28 can then be effected by means of an exhaust duct 41.
  • this duct 41 can be used as a duct for admission of the fluid under pressure into the chamber 9 which then constitutes a second working chamber.
  • the stroke of the piston can be adjusted by means of two adjustable stops 42, 43 respectively provided on the cover 6 and on the guide member 10. These two stops 42, 43 come to wear at the end of the race on the breech 5 or on the breech 4.
  • FIG. 4 illustrates an exemplary embodiment of such an actuator using cartridge springs.
  • the jack of the actuator has a body 43 of similar structure to that described above but much more elongated.
  • a central partition 45 which contains all the elements of the actuator represented in FIG. 1 and, in particular, the piston 3, the operating shaft 26 and the conversion device 27, 28, 28 '; and a second part 47 serving to house a spring cartridge.
  • This spring cartridge comprises, between two circular bearing shells 48, 49, a plurality of spiral axial springs 50 held in their central region by an axially sliding holding disk 51.
  • One of these shells 49 is supported on the yoke 44 ', while the other, slidably mounted with sealing in the bore 52, is integral with a coaxial rod 53 which slides, with sealing, in a through hole 54 provided in the center of the partition 45 and which bears on the piston 3.
  • This rod 53 is extended in the cartridge through a central orifice 55 forming a bearing of the holding disk 51.
  • the space between the partition 45 and the shell 48 then forms an auxiliary working chamber 48 'which communicates with the admission channel 56 via an orifice 57.
  • the volume between the two shells 48, 49 is connected to the chamber 8 of the jack via a decompression channel 58 made in the rod 53.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)

Abstract

The actuator according to the invention comprises a tubular body (1) with a cylindrical bore (2) inside which slides a piston (3), and a device (37, 28, 28') for converting the straight-line movement of the piston (3) into a rotational movement of an operating shaft (26), housed entirely in the said bore (2) and actuated directly by the piston (3). The operating shaft (26) passes through a substantially radial orifice of the body, and the conversion device comprises a connecting rod (28, 28'), the ends of which are respectively articulated on the piston (3) and on a lever integrally connected to the operating shaft (26). …<??>This actuator can serve to control a butterfly valve. …<IMAGE>…

Description

La présente invention concerne un actionneur utilisant un fluide sous pression pour l'entraînement en rotation d'un arbre rotatif.The present invention relates to an actuator using a pressurized fluid for driving in rotation a rotary shaft.

Elle s'applique plus particulièrement, mais non exclusive­ment, à la commande de robinets à actionnement quart de tour, tels que des robinets à papillon.It applies more particularly, but not exclusively, to the control of quarter-turn actuated valves, such as butterfly valves.

D'une manière générale, on sait que pour assurer la commande d'un robinet, on a déjà proposé de nombreux types d'action­neurs hydrauliques ou pneumatiques faisant intervenir au moins un vérin dont la tige se déplace perpendiculairement à l'arbre de commande du robinet, et un dispositif cinématique assurant la conversion du mouvement rectiligne alternatif de la tige, en un mouvement circulaire alternatif de l'arbre de commande.In general, it is known that to control a valve, it has already been proposed many types of hydraulic or pneumatic actuators involving at least one cylinder whose rod moves perpendicularly to the control shaft of the faucet, and a kinematic device ensuring the conversion of the reciprocating rectilinear motion of the rod, in a reciprocating circular movement of the control shaft.

Ce dispositif de conversion peut avantageusement compren­dre, de la façon décrite dans le brevet FR 1 460 561 au nom de la Demanderesse, une noix solidaire de la tige du vérin sur laquelle vient s'articuler une bielle, elle-même articu­lée sur un bras de levier monté fixement sur l'arbre de commande du robinet, ladite bielle et ledit bras s'étendant dans des plans orthogonaux à l'axe dudit arbre de commande.This conversion device may advantageously comprise, in the manner described in patent FR 1 460 561 in the name of the Applicant, a nut integral with the cylinder rod on which is articulated a connecting rod, itself articulated on an arm of lever mounted fixedly on the control shaft of the valve, said connecting rod and said arm extending in planes orthogonal to the axis of said control shaft.

Habituellement, ce dispositif de conversion est enfermé dans un carter sur lequel est rapporté le corps du vérin, de telle manière que la tige du vérin passe à l'intérieur du carter.Usually, this conversion device is enclosed in a housing on which is attached the cylinder body, so that the cylinder rod passes inside the housing.

Il s'avère que les actionneurs de ce genre, dans lesquels les fonctionnalités (motorisation/conversion) sont sépa­rées, présentent des structures relativement complexes utilisant un nombre relativement élevé de pièces à usiner (carter, corps du vérin, dispositif d'assemblage du vérin sur le carter, dispositif d'assemblage du carter sur le corps du robinet, etc...). Ces actionneurs sont en consé­quence lourds, encombrants et d'un coût de fabrication relativement élevé.It turns out that actuators of this kind, in which the functionalities (motorization / conversion) are separated, have relatively complex structures using a relatively large number of workpieces (housing, cylinder body, cylinder assembly device on the housing, crankcase assembly device on the valve body, etc ...). These actuators are consequently heavy, bulky and a relatively high manufacturing cost.

L'invention a donc plus particulièrement pour but de simpli­fier cette structure, en conservant les principaux avantages de ce type d'actionneurs, afin d'obtenir un ensemble plus compact, plus léger et plus économique.The invention therefore more particularly to simplify this structure, retaining the main advantages of this type of actuators, to obtain a more compact, lighter and more economical.

Elle propose donc à cet effet un actionneur faisant coopé­rer, d'une façon similaire à celle des actionneurs précédem­ment définis, d'une part, un vérin comportant un corps muni d'un alésage cylindrique à l'intérieur duquel coulisse avec étanchéité un piston, ce piston délimitant, à l'intérieur dudit alésage, deux chambres dont au moins l'une constitue une chambre de travail dans laquelle débouche un conduit d'admission de fluide sous pression et, d'autre part, un dispositif de conversion du mouvement rectiligne du piston en un mouvement de rotation d'un arbre de manoeuvre entière­ment logé dans ledit alésage et directement actionné par le piston, ledit corps comprenant au moins un premier orifice traversant, sensiblement radial, par lequel passe ledit arbre de manoeuvre pour venir se coupler audit dispositif de conversion, à l'intérieur dudit alésage.It therefore proposes for this purpose an actuator which cooperates, in a manner similar to that of the previously defined actuators, on the one hand, a jack comprising a body provided with a cylindrical bore within which a piston slides with sealing, this piston delimiting, within said bore, two chambers, at least one of which constitutes a working chamber into which a pressurized fluid inlet duct opens and, secondly, a device for converting rectilinear movement. piston in a rotational movement of a drive shaft fully housed in said bore and directly actuated by the piston, said body comprising at least a first through-hole, substantially radial, through which said drive shaft to couple to said auditory conversion device, inside said bore.

Selon l'invention, cet actionneur est plus particulièrement caractérisé en ce que ce dispositif de conversion comprend au moins une bielle dont l'une des extrémités est articulée sur le piston et dont l'autre extrémité est articulée à un bras de levier monté fixement sur le susdit arbre de manoeu­vre, ladite bielle et ledit bras s'étendant dans des plans orthogonaux à l'axe dudit arbre de commande.According to the invention, this actuator is more particularly characterized in that this conversion device comprises at least one connecting rod whose one end is articulated on the piston and whose other end is articulated to a lever arm fixedly mounted on the aforesaid operating shaft, said connecting rod and said arm extending in planes orthogonal to the axis of said control shaft.

Il convient de noter que l'arbre de manoeuvre peut faire partie intégrante de l'actionneur et comprendre des moyens d'accouplement avec l'arbre d'actionnement du dispositif commandé. Dans ce cas, le corps du vérin pourra avantageuse­ment comprendre un deuxième orifice diamétralement opposé et coaxial au premier, l'arbre de manoeuvre étant alors monté rotatif au niveau de ces deux orifices.It should be noted that the operating shaft can be an integral part of the actuator and comprise means of coupling with the actuating shaft of the controlled device. In this case, the cylinder body may advantageously comprise a second diametrically opposite orifice and coaxial with the first, the actuating shaft then being rotatably mounted at these two orifices.

Cet arbre de manoeuvre peut également consister en un tronçon de l'arbre d'actionnement du dispositif commandé, qui vient alors s'engager dans l'alésage du corps du vérin en passant par l'un au moins des susdits orifices.This operating shaft may also consist of a section of the actuation shaft of the controlled device, which then engages in the bore of the cylinder body passing through at least one of said orifices.

Selon une autre caractéristique de l'invention, le susdit vérin est de type à double effet. Dans ce cas, le piston délimite, à l'intérieur de l'alésage du corps du vérin, deux chambres de travail opposées dans lesquelles débouchent deux conduits d'admission respectifs, l'une des deux chambres logeant le susdit dispositif de conversion. Dans ce cas, des moyens d'étanchéité devront être prévus au niveau des pivo­teries de l'arbre de manoeuvre dans les orifices du corps du vérin.According to another characteristic of the invention, the aforesaid cylinder is of double-acting type. In this case, the piston defines, within the bore of the cylinder body, two opposite working chambers into which two respective inlet ducts open, one of the two chambers housing the aforesaid conversion device. In this case, sealing means must be provided at the pivoting of the operating shaft in the orifices of the cylinder body.

Des modes de réalisation de l'invention seront décrits ci-­après, à titre d'exemples non limitatifs, avec référence aux dessins annexés dans lesquels :

  • La figure 1 est une coupe axiale, dans un plan perpen­diculaire à l'arbre de manoeuvre, d'un actionneur selon un mode d'exécution préféré de l'invention ;
  • La figure 2 est une coupe transversale selon B-B de la figure 1 ;
  • La figure 3 est coupe axiale de l'actionneur représenté figure 1, dans un plan passant par l'axe de l'arbre de manoeuvre ;
  • La figure 4 est une vue, partiellement en coupe, d'un actionneur du type de celui représenté sur la figure 1, mais dans lequel le vérin est à simple effet avec rappel par ressort.
Embodiments of the invention will be described hereinafter, by way of non-limiting examples, with reference to the accompanying drawings in which:
  • Figure 1 is an axial section, in a plane perpendicular to the actuating shaft, an actuator according to a preferred embodiment of the invention;
  • Figure 2 is a cross-section along BB of Figure 1;
  • Figure 3 is axial section of the actuator shown in Figure 1, in a plane passing through the axis of the operating shaft;
  • Figure 4 is a view, partially in section, of an actuator of the type shown in Figure 1, but wherein the cylinder is single acting with spring return.

Tel que représenté sur les figures 1 à 3, l'actionneur comprend un corps tubulaire 1 à alésage cylindrique 2, à l'intérieur duquel coulisse avec étanchéité un piston 3, ce corps tubulaire 1 étant fermé à chacune de ses extrémités par une culasse respective 4, 5.As represented in FIGS. 1 to 3, the actuator comprises a tubular body 1 with a cylindrical bore 2, within which a piston 3 slides in sealed manner, this tubular body 1 being closed at each of its ends by a respective cylinder head 4, 5.

Ce piston 3 comporte à l'une de ses extrémités un opercule circulaire 6 de diamètre sensiblement égal à celui de l'alé­sage 2 et muni, à sa périphérie, d'une garniture d'étan­chéité (joint torique 7) qui assure une étanchéité coulis­sante avec la surface cylindrique de l'alésage 2.This piston 3 comprises at one of its ends a circular cap 6 of diameter substantially equal to that of the bore 2 and provided at its periphery with a seal (O-ring 7) which provides a sliding seal with the cylindrical surface of the bore 2.

Cet opercule 6 délimite donc deux chambres 8, 9 à volume variable hermétiquement isolées l'une de l'autre. Il est maintenu coaxialement à l'alésage 2 grâce à un élément de guidage 10 consistant en une pièce plate qui s'étend radia­lement dans l'alésage et présente deux bordures circulaires 11, 12 opposées sensiblement au diamètre de l'alésage 2, munies de garnitures anti-friction, et deux bordures oppo­sées 13, 14 éventuellement rectilignes qui s'étendent entre les extrémités opposées des bordures circulaires 11, 12. Cet élément de guidage 10 est relié à l'opercule 6 par quatre longerons axiaux 16, 17, 18, 19 en forme de cornière dispo­sés symétriquement par rapport à l'axe longitudinal de symétrie XX′ de l'alésage 2 avec leurs concavités orientées à l'opposé dudit axe.This seal 6 thus delimits two chambers 8, 9 variable volume hermetically isolated from each other. It is held coaxially with the bore 2 by means of a guide element 10 consisting of a flat part which extends radially in the bore and has two circular edges 11, 12 opposite substantially to the diameter of the bore 2, provided with anti-friction linings, and two opposite edges 13, 14 optionally rectilinear which extend between the opposite ends of the circular edges 11, 12. This guide element 10 is connected to the lid 6 by four axial spars 16, 17, 18 , 19 in the form of an angle disposed symmetrically with respect to the longitudinal axis of symmetry XX 'of the bore 2 with their concavities oriented away from said axis.

Ces longerons 16 à 19 délimitent entre eux un volume libre axialement allongé, de section cruciforme qui présente deux branches perpendiculaires 22, 23 et s'étend axialement sur une distance supérieure à la course du piston 3.These longitudinal members 16 to 19 delimit between them an axially elongated free volume, of cruciform section which has two perpendicular branches 22, 23 and extends axially over a distance greater than the stroke of the piston 3.

Par ailleurs, le corps 1 du vérin comprend deux orifices sensiblement radiaux 20, 21 diamétralement opposés qui débouchent dans l'alésage 2 au droit de l'une des deux branches 22, 23 du volume libre.Furthermore, the body 1 of the cylinder comprises two diametrically opposed substantially radial orifices 20, 21 which open into the bore 2 in line with one of the two branches 22, 23 of the free volume.

Ces orifices 20, 21 sont équipés de paliers 24, 25 dans lesquels sont montées rotatives avec étanchéité les extrémi­tés de l'arbre de manoeuvre 26 qui traverse de part en part l'alésage 2, en passant par la branche 23 du volume libre cruciforme.These orifices 20, 21 are equipped with bearings 24, 25 in which the ends of the operating shaft 26, which passes right through the bore 2, passing through the branch 23 of the cruciform free space, are rotatably mounted with sealing.

Pour faire en sorte que le piston 3 puisse coulisser selon une course déterminée, il conviendra de faire en sorte que la longueur (axiale) de la branche 23 du volume libre cruci­forme soit au moins égale à la somme de la course du piston 3 et du diamètre de l'arbre de manoeuvre 26.To ensure that the piston 3 can slide in a determined race, it will be necessary to ensure that the length (axial) of the branch 23 of the cruciform free space is at least equal to the sum of the stroke of the piston 3 and the diameter of the operating shaft 26.

La branche 22 du volume libre cruciforme sert, quant à elle, à recevoir et à permettre le débattement des éléments du dispositif de conversion du mouvement rectiligne du piston 3 en un mouvement de rotation de l'arbre de manoeuvre 26.The branch 22 of the cruciform free space serves, as for it, to receive and to allow the movement of the elements of the device for converting the rectilinear motion of the piston 3 into a rotational movement of the operating shaft 26.

Tel que représenté sur ces figures, ce dispositif fait intervenir un levier 27 dont une extrémité est montée fixe­ment sur l'arbre de manoeuvre 26, de manière à s'étendre sensiblement dans le plan médian longitudinal de la branche 22 et dont l'autre extrémité est articulée à l'une des extrémités d'un couple de biellettes 28, 28′ au moyen d'un axe transversal 29, et dont l'autre extrémité est montée pivotante autour d'un axe transversal 30 porté par les deux longerons 16, 17.As shown in these figures, this device involves a lever 27 whose one end is fixedly mounted on the operating shaft 26, so as to extend substantially in the longitudinal median plane of the branch 22 and whose other end is articulated at one end of a pair of rods 28, 28 'by means of a transverse axis 29, and whose other end is pivotally mounted about a transverse axis 30 carried by the two side members 16, 17.

Les deux biellettes 28, 28′ de ce couple s'étendent de part et d'autre du levier 27 et sont maintenues écartées l'une de l'autre au niveau de l'axe 30 grâce à une douille entretoise 32.The two rods 28, 28 'of this pair extend on either side of the lever 27 and are held apart from each other at the axis 30 by means of a spacer sleeve 32.

La longueur de cette douille entretoise 32 est alors prévue de manière à maintenir les extrémités des biellettes 28, 28′ appliquées contre les faces 33, 34 des longerons 16, 17 bordant la branche 22 du volume libre cruciforme, et d'assu­rer ainsi un guidage permanent des biellettes 28, 28′ au cours de leur pivotement.The length of this spacer sleeve 32 is then provided so as to maintain the ends of the rods 28, 28 'applied against the faces 33, 34 of the longitudinal members 16, 17 bordering the branch 22 of the cruciform free space, and thus to provide guiding permanent rods 28, 28 'during their pivoting.

Cette disposition s'avère particulièrement avantageuse en comparaison des solutions classiques dans lesquelles le guidage des pieds des biellettes s'obtient habituellement grâce à des rainures usinées dans le carter (disposition par ailleurs incompatible avec la solution proposée par l'inven­tion).This arrangement is particularly advantageous in comparison with conventional solutions in which the guidance of the feet of the rods is usually obtained through grooves machined in the housing (otherwise incompatible with the solution proposed by the invention).

Le principe de fonctionnement du dispositif de conversion à levier 27 et biellettes 28, 28′ est bien connu et ne fera donc pas l'objet d'une description détaillée. Il suffira simplement de rappeler qu'un déplacement en translation du piston 3 engendrera, par le biais des biellettes 28, 28′ et du levier 27, un mouvement de rotation de l'arbre de manoeu­vre 26 lequel, grâce à un dispositif d'accouplement appro­prié, entraînera en rotation l'arbre de commande du disposi­tif commandé.The operating principle of the lever conversion device 27 and rods 28, 28 'is well known and will therefore not be described in detail. It will suffice simply to recall that a displacement in translation of the piston 3 will generate, by means of the links 28, 28 'and the lever 27, a rotational movement of the operating shaft 26 which, thanks to a coupling device appropriate, will rotate the control shaft of the controlled device.

Dans l'exemple représenté, l'accouplement de l'arbre de manoeuvre 26 et de l'arbre de commande du dispositif commandé s'obtient par un engagement d'un carré de manoeuvre prévu en tête de l'arbre de commande, dans un évidement axial 35, de forme complémentaire, prévu dans l'extrémité 36 de l'arbre de manoeuvre 26.In the example shown, the coupling of the operating shaft 26 and the control shaft of the controlled device is obtained by an engagement of a maneuvering square provided at the head of the control shaft, in a axial recess 35, of complementary shape, provided in the end 36 of the operating shaft 26.

Par ailleurs, l'arbre de manoeuvre 26 entraîne, à son autre extrémité, un dispositif de signalisation 37 de l'état de l'actionneur, logé dans un boîtier 38 solidaire du corps du vérin.Moreover, the operating shaft 26 drives, at its other end, a signaling device 37 of the state of the actuator, housed in a housing 38 integral with the cylinder body.

A cet effet, le corps présente une forme prismatique délimi­tant deux chambres s'étendant axialement côte à côte, à savoir :
- une chambre cylindrique ( délimitée par l'alésage 2), qui est dévolue à la fourniture de puissance, et
- une chambre S, de section sensiblement trapézoïdale, refermée à ses deux extrémités par deux culasses respecti­ves C₁, C₂, qui peut servir à recevoir un dispositif de signalisation intégré (par exemple un dispositif de signa­lisation électrique).For this purpose, the body has a prismatic shape delimiting two chambers extending axially side by side, namely:
- a cylindrical chamber (defined by the bore 2), which is devolved to the supply of power, and
- A chamber S, of substantially trapezoidal section, closed at both ends by two respective cylinder heads C₁, C₂, which can be used to receive an integrated signaling device (eg an electrical signaling device).

Cette structure présente l'avantage de permettre la réalisa­tion du corps par extrusion ou par un procédé similaire.This structure has the advantage of allowing the body to be produced by extrusion or by a similar process.

Le fonctionnement de l'actionneur précédemment décrit peut être de type simple effet ou double effet.The operation of the actuator described above can be of simple effect or double effect type.

Ainsi, dans le cas d'un fonctionnement de type simple effet, la chambre 8 pourra par exemple constituer la chambre de travail de l'actionneur. L'alimentation de cette chambre 8 en fluide sous pression, par exemple en air comprimé, sera assurée par un conduit axial 39 prévu sur le corps du vérin, qui communique avec le volume intérieur de la chambre 8 grâce à un orifice d'admission 40.Thus, in the case of a single-acting type operation, the chamber 8 may for example constitute the working chamber of the actuator. The supply of this chamber 8 with fluid under pressure, for example compressed air, will be ensured by an axial duct 39 provided on the cylinder body, which communicates with the internal volume of the chamber 8 through an inlet port 40 .

L'écoulement du fluide contenu dans la chambre 9 qui contient le dispositif de conversion 27, 28 peut alors s'effectuer au moyen d'un conduit d'échappement 41.The flow of the fluid contained in the chamber 9 which contains the conversion device 27, 28 can then be effected by means of an exhaust duct 41.

Il est clair que dans le cas d'un fonctionnement de type à double effet, ce conduit 41 peut être utilisé en tant que conduit d'admission du fluide sous pression dans la chambre 9 qui constitue alors une deuxième chambre de travail.It is clear that in the case of a double-acting type operation, this duct 41 can be used as a duct for admission of the fluid under pressure into the chamber 9 which then constitutes a second working chamber.

Dans tous les cas, la course du piston pourra être réglée au moyen de deux butées réglables 42, 43 respectivement prévues sur l'opercule 6 et sur l'élément de guidage 10. Ces deux butées 42, 43 venant porter en fin de course sur la culasse 5 ou sur la culasse 4.In all cases, the stroke of the piston can be adjusted by means of two adjustable stops 42, 43 respectively provided on the cover 6 and on the guide member 10. These two stops 42, 43 come to wear at the end of the race on the breech 5 or on the breech 4.

Un avantage important de la structure précédemment décrite consiste en ce qu'il devient possible de réaliser des actionneurs de type à simple effet, avec rappel par ressort, dans lesquels l'alésage du corps du vérin loge en plus du dispositif de conversion 27, 28, les éléments de ressort assurant le rappel.An important advantage of the previously described structure is that it becomes possible to realize single acting, spring return type actuators in which the bore of the cylinder body houses in addition to the conversion device 27, 28. , the spring elements ensuring the recall.

La figure 4 illustre un exemple de réalisation d'un tel actionneur utilisant des ressorts en cartouches.FIG. 4 illustrates an exemplary embodiment of such an actuator using cartridge springs.

Dans cet exemple, le vérin de l'actionneur présente un corps 43 de structure similaire à celle précédemment décrite mais beaucoup plus allongé.In this example, the jack of the actuator has a body 43 of similar structure to that described above but much more elongated.

Le volume délimité par l'alésage de ce corps 42 et par les deux culasses 44, 44′ est alors divisé en deux parties par une cloison centrale 45, à savoir :
- une première partie 46, située à droite de la figure 4, qui renferme tous les éléments de l'actionneur représenté figure 1 et, en particulier, le piston 3, l'arbre de manoeuvre 26 et le dispositif de conversion 27, 28, 28′ ; et
- une deuxième partie 47 servant à loger une cartouche à ressorts.The volume delimited by the bore of this body 42 and the two yokes 44, 44 'is then divided into two parts by a central partition 45, namely:
a first part 46, to the right of FIG. 4, which contains all the elements of the actuator represented in FIG. 1 and, in particular, the piston 3, the operating shaft 26 and the conversion device 27, 28, 28 '; and
a second part 47 serving to house a spring cartridge.

Cette cartouche à ressorts comprend, entre deux coquilles d'appui circulaires 48, 49, une pluralité de ressorts axiaux 50 en spirale maintenus dans leur région centrale par un disque de maintien axialement coulissant 51. L'une de ces coquilles 49 est en appui sur la culasse 44′, tandis que l'autre, montée coulissante avec étanchéité dans l'alésage 52, est solidaire d'une tige coaxiale 53 qui coulisse, avec étanchéité, dans un orifice de passage 54 prévu au centre de la cloison 45 et qui prend appui sur le piston 3.This spring cartridge comprises, between two circular bearing shells 48, 49, a plurality of spiral axial springs 50 held in their central region by an axially sliding holding disk 51. One of these shells 49 is supported on the yoke 44 ', while the other, slidably mounted with sealing in the bore 52, is integral with a coaxial rod 53 which slides, with sealing, in a through hole 54 provided in the center of the partition 45 and which bears on the piston 3.

Cette tige 53 se prolonge dans la cartouche en passant par un orifice central 55 formant palier du disque de maintien 51.This rod 53 is extended in the cartridge through a central orifice 55 forming a bearing of the holding disk 51.

L'espace compris entre la cloison 45 et la coquille 48 forme alors une chambre de travail auxiliaire 48′ qui communique avec le canal d'admission 56 par l'intermédiaire d'un orifi­ce 57.The space between the partition 45 and the shell 48 then forms an auxiliary working chamber 48 'which communicates with the admission channel 56 via an orifice 57.

Par ailleurs, le volume compris entre les deux coquilles 48, 49 est relié à la chambre 8 du vérin grâce à un canal de décompression 58 réalisé dans la tige 53.Moreover, the volume between the two shells 48, 49 is connected to the chamber 8 of the jack via a decompression channel 58 made in the rod 53.

Il est clair que sous l'effet d'un fluide sous pression admis dans le canal d'admission 56, la pression engendrée dans la chambre 9 du vérin et dans la chambre auxiliaire 48′ provoquera un déplacement vers la gauche du piston 3 et de la coquille 48, contre l'effet des ressorts 50.It is clear that under the effect of a pressurized fluid admitted into the inlet channel 56, the pressure generated in the chamber 9 of the jack and in the auxiliary chamber 48 'will cause a displacement to the left of the piston 3 and the shell 48, against the effect of the springs 50.

Ce déplacement se poursuivra jusqu'à ce que la butée régla­ble 59 prévue à l'extrémité de la tige 53 vienne en appui sur le carter 43.This displacement will continue until the adjustable stop 59 provided at the end of the rod 53 bears on the casing 43.

Il convient de préciser qu'au cours de ce déplacement, l'énergie du fluide sous pression à l'intérieur de la cham­bre de travail auxiliaire servira essentiellement à assurer la compression des ressorts 50, de manière à conserver intégralement le couple utile que présenterait l'actionneur en l'absence des moyens élastiques de rappel.It should be noted that during this movement, the energy of the pressurized fluid inside the auxiliary working chamber will serve essentially to ensure the compression of the springs 50, so as to fully retain the useful torque that would present the actuator in the absence of elastic return means.

Il est clair qu'ensuite, le retour du piston 3 à sa position initiale sera assuré, lors d'une chute de pression du fluide d'admission, grâce à l'énergie emmagasinée par les ressorts 50.It is clear that subsequently, the return of the piston 3 to its initial position will be ensured, during a pressure drop of the intake fluid, thanks to the energy stored by the springs 50.

Il ressort de ce qui précède que la solution proposée par l'invention apporte les avantages suivants :
- l'intégration de la cinématique à bielle et manivelle à l'intérieur du vérin amène une plus grande compacité par rapport aux solutions antérieures et permet un usinage plus simple de ce seul corps de vérin par rapport aux deux usinages qui étaient réalisés antérieurement ;
- le guidage des pieds de biellette qui se faisait jusqu'ici dans des rainures usinées dans le carter se fait mainte­nant par l'intermédiaire du piston lui-même et utilise ainsi l'usinage du cylindre comme surface de portée, ce qui simplifie à la fois construction et usinage.It follows from the foregoing that the solution proposed by the invention provides the following advantages:
- The integration of kinematics connecting rod and crank inside the cylinder brings a greater compactness compared to previous solutions and allows a simpler machining of this single cylinder body with respect to the two machining operations that were previously performed;
the guiding of the rod feet, which has been done up to now in grooves machined in the casing, is now done by means of the piston itself and thus uses the machining of the cylinder as a bearing surface, which simplifies the both construction and machining.

Claims (13)

1. Actionneur utilisant un fluide sous pression pour l'entraînement en rotation d'un arbre rotatif, cet action­neur faisant coopérer, d'une part, un vérin comportant un corps tubulaire (1) muni d'un alésage cylindrique (2) à l'intérieur duquel coulisse avec étanchéité un piston (3), ce piston délimitant à l'intérieur dudit alésage deux cham­bres (8, 9) dont au moins l'une constitue une chambre de travail dans laquelle débouche un conduit d'admission (39, 40) de fluide sous pression et, d'autre part, un dispositif de conversion (27, 28, 28′) du mouvement rectiligne du piston (3) en un mouvement de rotation d'un arbre de manoeu­vre (26) entièrement logé dans ledit alésage et directement actionné par le piston (3), ledit corps (1) comprenant au moins un premier orifice traversant (20), sensiblement radial, par lequel passe ledit arbre de manoeuvre (26) pour venir se coupler audit dispositif de conversion, à l'inté­rieur dudit alésage (2),
caractérisé en ce que ce dispositif de conversion comprend au moins une bielle (28, 28′) dont l'une des extrémités est articulée sur le piston (3) et dont l'autre extrémité est articulée à un bras de levier (27) monté fixement sur le susdit arbre de manoeuvre (26) , ladite bielle (28, 28′) et ledit bras (27) s'étendant dans des plans orthogonaux à l'axe dudit arbre de commande (26).1. Actuator using a fluid under pressure for rotating a rotary shaft, said actuator cooperating, on the one hand, a jack having a tubular body (1) provided with a cylindrical bore (2) to the inside which slides a piston (3) sealingly, this piston delimiting inside said bore two chambers (8, 9), at least one of which constitutes a working chamber into which an inlet duct (39, 40) of fluid under pressure and, on the other hand, a conversion device (27, 28, 28 ') of the rectilinear motion of the piston (3) in a rotational movement of an operating shaft (26) fully housed in said bore and directly actuated by the piston (3), said body (1) comprising at least a first substantially radial through orifice (20) through which said actuating shaft (26) passes to couple with said conversion device, inside said bore (2),
characterized in that said conversion device comprises at least one connecting rod (28, 28 ') whose one end is hinged to the piston (3) and whose other end is articulated to a lever arm (27) mounted fixed on the aforesaid operating shaft (26), said connecting rod (28, 28 ') and said arm (27) extending in planes orthogonal to the axis of said control shaft (26). 2. Actionneur selon la revendication 1,
caractérisé en ce que le susdit piston (3) comporte, à l'une de ses extrémités, un opercule circulaire (6) muni à sa périphérie d'une garniture d'étanchéité (7) assurant une étanchéité coulissante avec la surface cylindrique de l'alésage (2) et, axialement décalé par rapport audit oper­cule, un élément de guidage (10) coulissant sur ledit alésa­ge, cet élément de guidage (10) étant relié à l'opercule (6) par des longerons (16 à 19) disposés symétriquement par rapport à l'axe longitudinal de symétrie (XX′) de l'alésage (2), de manière à délimiter au moins un volume libre de section cruciforme présentant deux branches perpendiculai­res, à savoir :
- une première branche (23) au travers de laquelle passe le susdit arbre de manoeuvre, et
- une deuxième branche (22) dans laquelle peuvent se débat­tre les éléments du susdit dispositif de conversion (27, 28, 28′).Actuator according to claim 1,
characterized in that the aforesaid piston (3) comprises, at one of its ends, a circular cap (6) provided at its periphery with a seal (7) providing a sliding seal with the cylindrical surface of the boring (2) and, axially offset with respect to said cover, a guide element (10) sliding on said bore, this guide element (10) being connected to the cover (6) by longitudinal members (16 to 19) arranged symmetrically by relative to the longitudinal axis of symmetry (XX ') of the bore (2), so as to delimit at least one free volume of cruciform section having two perpendicular branches, namely:
a first branch (23) through which the aforementioned drive shaft passes, and
a second branch (22) in which the elements of the aforesaid conversion device (27, 28, 28 ') can be thrown. 3. Actionneur selon la revendication 2,
caractérisé en ce que la susdite bielle (28, 28′) est montée rotative, par l'une de ses extrémités, autour d'un axe transversal (30) solidaire de deux longerons (16, 17) en vis-à-vis.Actuator according to Claim 2,
characterized in that the said connecting rod (28, 28 ') is rotatably mounted, at one of its ends, about a transverse axis (30) integral with two longitudinal members (16, 17) vis-à-vis. 4. Actionneur selon l'une des revendications précé­dentes,
caractérisé en ce que le susdit piston (3) comprend des moyens de guidage des susdites bielles (28, 28′).4. Actuator according to one of the preceding claims,
characterized in that the aforesaid piston (3) comprises means for guiding said connecting rods (28, 28 '). 5. Actionneur selon l'une des revendications précé­dentes,
caractérisé en ce que le susdit arbre de manoeuvre (26) fait partie intégrante de l'actionneur et comprend des moyens d'accouplement avec un arbre d'actionnement du dispositif commandé.Actuator according to one of the preceding claims,
characterized in that the aforesaid operating shaft (26) is an integral part of the actuator and comprises means for coupling with an actuating shaft of the controlled device. 6. Actionneur selon la revendication 5,
caractérisé en ce que le corps (1) du vérin comprend un deuxième orifice (21) diamétralement opposé et coaxial au premier (20), et en ce que l'arbre de manoeuvre (26) est monté rotatif au niveau de ces deux orifices (20, 21).Actuator according to claim 5,
characterized in that the body (1) of the cylinder comprises a second orifice (21) diametrically opposite and coaxial with the first (20), and in that the operating shaft (26) is rotatably mounted at these two orifices ( 20, 21). 7. Actionneur selon l'une des revendications précé­dentes,
caractérisé en ce que le susdit arbre de manoeuvre (26) consiste en un tronçon de l'arbre d'actionnement du disposi­tif commandé qui vient alors s'engager dans l'alésage (2) du corps (1) en passant par l'un au moins des susdits orifices (20).Actuator according to one of the preceding claims,
characterized in that the aforesaid operating shaft (26) consists of a section of the actuating shaft of the controlled device which then engages in the bore (2) of the body (1) passing through one at least said ports (20). 8. Actionneur selon l'une des revendications précé­dentes,
caractérisé en ce que le piston (3) délimite à l'intérieur du corps du vérin, deux chambres de travail opposées (8, 9) dans lesquelles débouchent deux conduits d'admission respectifs (39, 40 et 41), l'une des deux chambres (9) logeant le susdit dispositif de conversion, et en ce que, dans ce cas, des moyens d'étanchéité sont prévus au niveau des pivoteries de l'arbre de manoeuvre (26) dans les orifices du corps du vérin (20, 21).Actuator according to one of the preceding claims,
characterized in that the piston (3) delimits inside the cylinder body, two opposed working chambers (8, 9) into which two respective intake ducts (39, 40 and 41) open, one of the two chambers (9) housing the aforesaid conversion device, and in that, in this case, sealing means are provided at the pivoting points of the operating shaft (26) in the orifices of the cylinder body (20). , 21). 9. Dispositif selon la revendication 6,
caractérisé en ce que l'arbre de manoeuvre (26) entraîne, par l'une de ses extrémités située à l'opposé du dispositif commandé, un dispositif de signalisation (37) de l'état de l'actionneur, logé dans un boîtier (38) solidaire du corps du vérin.9. Device according to claim 6,
characterized in that the operating shaft (26) drives, by one of its ends located opposite the controlled device, a signaling device (37) of the state of the actuator, housed in a housing (38) integral with the cylinder body. 10. Dispositif selon la revendication 9,
caractérisé en ce que le susdit corps présente une forme prismatique délimitant deux chambres s'étendant axialement côte à côte, à savoir :
- une chambre cylindrique délimitée par le susdit alésage (2), et
- une chambre (S), refermée à ses deux extrémités par deux culasses respectives (C₁, C₂), destinée à recevoir le susdit dispositif de signalisation (37).Device according to claim 9,
characterized in that said body has a prismatic shape defining two axially extending chambers side by side, namely:
a cylindrical chamber delimited by the aforesaid bore (2), and
- A chamber (S), closed at both ends by two respective yokes (C₁, C₂) for receiving the aforesaid signaling device (37). 11. Dispositif selon la revendication 10,
caractérisé en ce que le susdit corps (1) est obtenu par extrusion.11. Device according to claim 10,
characterized in that the aforesaid body (1) is obtained by extrusion. 12. Actionneur selon l'une des revendications précé­dentes,
caractérisé en ce que le susdit vérin est de type à simple effet, et en ce que le susdit alésage (2) renferme en outre des moyens élastiques (50) assurant le rappel du piston (3).Actuator according to one of the preceding claims,
characterized in that the aforesaid cylinder is of single-acting type, and in that the aforesaid bore (2) further comprises elastic means (50) ensuring the return of the piston (3). 13. Actionneur selon la revendication 12,
caractérisé en ce que le volume délimité par le susdit alésage est divisé en deux parties par une cloison transver­sale, à savoir :
- une première partie (46) renfermant le piston (3), l'arbre de manoeuvre (26) et le dispositif de conversion (27, 28, 28′) ; et
- une deuxième partie (47) servant à loger une cartouche à ressorts et qui comprend en regard de la susdite cloison (45) une coquille (48) sur laquelle viennent en appui les susdits moyens élastiques (50), cette coquille (48) étant montée coulissante avec étanchéité dans le susdit alésage (52) et reliée au susdit piston (3) par une tige coaxiale (53) qui coulisse, avec étanchéité, dans un orifice de passage (54) prévu au centre de la cloison (45), l'espace compris entre la cloison (45) et la coquille (48) formant une chambre de travail auxiliaire dans laquelle débouche un canal d'admission (56) de fluide sous pression.Actuator according to claim 12,
characterized in that the volume defined by the aforesaid bore is divided into two parts by a transverse partition, namely:
a first portion (46) enclosing the piston (3), the operating shaft (26) and the conversion device (27, 28, 28 '); and
- a second portion (47) for housing a spring cartridge and which comprises opposite said bulkhead (45) a shell (48) on which abut the aforesaid elastic means (50), the shell (48) being sliding mounting with sealing in the aforesaid bore (52) and connected to the aforesaid piston (3) by a coaxial rod (53) which slides, with sealing, in a passage opening (54) provided in the center of the partition (45), the space between the partition (45) and the shell (48) forming an auxiliary working chamber into which opens an inlet channel (56) of fluid under pressure.
EP88400548A 1988-03-09 1988-03-09 Fluid actuator for driving a rotary shaft Expired - Lifetime EP0331854B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DE198888400548T DE331854T1 (en) 1988-03-09 1988-03-09 LIQUID ACTUATING DEVICE FOR DRIVING A TURN SHAFT.
DE8888400548T DE3864814D1 (en) 1988-03-09 1988-03-09 PRESSURE-OPERATED DEVICE FOR DRIVING A TURN SHAFT.
ES88400548T ES2010174B3 (en) 1988-03-09 1988-03-09 ACTUATOR USING A PRESSURE FLUID TO DRAG A ROTATING TREE IN ROTATION
EP88400548A EP0331854B1 (en) 1988-03-09 1988-03-09 Fluid actuator for driving a rotary shaft
JP1057665A JPH01312206A (en) 1988-03-09 1989-03-09 Actuator
US07/321,195 US4995305A (en) 1988-03-09 1989-03-09 Actuator employing a fluid under pressure for the driving in rotation of a rotary shaft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP88400548A EP0331854B1 (en) 1988-03-09 1988-03-09 Fluid actuator for driving a rotary shaft

Publications (2)

Publication Number Publication Date
EP0331854A1 true EP0331854A1 (en) 1989-09-13
EP0331854B1 EP0331854B1 (en) 1991-09-11

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP88400548A Expired - Lifetime EP0331854B1 (en) 1988-03-09 1988-03-09 Fluid actuator for driving a rotary shaft

Country Status (5)

Country Link
US (1) US4995305A (en)
EP (1) EP0331854B1 (en)
JP (1) JPH01312206A (en)
DE (2) DE331854T1 (en)
ES (1) ES2010174B3 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1285060B1 (en) * 1996-04-26 1998-06-03 Magneti Marelli Spa ACTUATOR GROUP WITH FLUID CONTROL.
JP4944696B2 (en) * 2006-08-04 2012-06-06 株式会社キッツ Spring return pneumatic actuator
CA3161673A1 (en) * 2019-11-25 2021-06-03 Emerson Process Management Regulator Technologies, Inc. Scotch yoke actuator

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US3452961A (en) * 1966-05-02 1969-07-01 Keystone Valve Corp Disc valve operator with compound driving linkage
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FR2260705A1 (en) * 1974-02-11 1975-09-05 Neles Oy
GB1476069A (en) * 1975-02-17 1977-06-10 Yazaki H Drive device for a valve actuaction shaft
GB1500404A (en) * 1976-09-03 1978-02-08 Kermode D Torque generating actuator

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DE2344932A1 (en) * 1972-10-19 1974-04-25 Homer John Shafer DOUBLE CYLINDER DRIVE FOR GENERATING A ROTATING MOVEMENT
GB2069051B (en) * 1980-01-24 1983-06-22 Camtorc Ltd Rotary actuator
JPS5824605A (en) * 1981-08-04 1983-02-14 Tomoe Gijutsu Kenkyusho:Kk Rotary actuator
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US3088441A (en) * 1960-07-11 1963-05-07 Bacchi Ray Valve actuator
US3452961A (en) * 1966-05-02 1969-07-01 Keystone Valve Corp Disc valve operator with compound driving linkage
DE2249761A1 (en) * 1971-10-19 1973-05-03 Saab Scania Ab DEVICE FOR CONVERTING AN AXIAL MOVEMENT INTO A ROTATING MOVEMENT
FR2260705A1 (en) * 1974-02-11 1975-09-05 Neles Oy
GB1476069A (en) * 1975-02-17 1977-06-10 Yazaki H Drive device for a valve actuaction shaft
GB1500404A (en) * 1976-09-03 1978-02-08 Kermode D Torque generating actuator

Also Published As

Publication number Publication date
ES2010174A4 (en) 1989-11-01
JPH01312206A (en) 1989-12-18
ES2010174B3 (en) 1992-03-01
US4995305A (en) 1991-02-26
DE331854T1 (en) 1989-12-28
DE3864814D1 (en) 1991-10-17
EP0331854B1 (en) 1991-09-11

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