WO2010063515A1 - Actionneur commandé par fluide, pourvu d'un moyen amélioré de réglage de la limite de course - Google Patents

Actionneur commandé par fluide, pourvu d'un moyen amélioré de réglage de la limite de course Download PDF

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Publication number
WO2010063515A1
WO2010063515A1 PCT/EP2009/064006 EP2009064006W WO2010063515A1 WO 2010063515 A1 WO2010063515 A1 WO 2010063515A1 EP 2009064006 W EP2009064006 W EP 2009064006W WO 2010063515 A1 WO2010063515 A1 WO 2010063515A1
Authority
WO
WIPO (PCT)
Prior art keywords
fluid
cam
profile
offset
operated actuator
Prior art date
Application number
PCT/EP2009/064006
Other languages
English (en)
Inventor
Antonio Marinoni
Ignazio Paris
Santo Rota
Original Assignee
Air Torque S.P.A.
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 Air Torque S.P.A. filed Critical Air Torque S.P.A.
Publication of WO2010063515A1 publication Critical patent/WO2010063515A1/fr

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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
    • F15B15/02—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
    • F15B15/065—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 rack-and-pinion type
    • 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
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/24—Other details, e.g. assembly with regulating devices for restricting the stroke

Definitions

  • the present invention relates to a fluid-operated actuator with improved stroke limit adjustment means.
  • the cam that is used which allows adjustment by a few degrees for opening and closure, is usually provided with a central lug which makes it possible, by means of the external adjustment screws, to perform locking in the open and closed conditions.
  • it is necessary to be able to adjust the rotation of the actuator with a relatively wide angular offset and therefore in these cases it is necessary to use cams that are different from the ones that allow an offset of a few degrees.
  • the aim of the invention is to solve the problems described above, by providing a fluid-operated actuator with improved stroke limit adjustment means, which makes it possible, with a single cam, to obtain angular offsets of a few degrees, locking, and the possibility of adjusting the stroke limit according to a very wide angular offset.
  • an object of the invention is to provide a fluid- operated actuator in which it is possible to lock in position the adjustment made, preventing inappropriate access to the stroke limit adjustment screws.
  • a fluid-operated actuator with improved stroke limit adjustment means comprising a containment body that forms a sliding chamber of at least one piston for the actuation of a control shaft which can be associated with a valve to be driven, stroke limit means being associated with said control shaft, inside said containment body, and consisting of an elongated plate that forms, on a first side, a cam-like profile provided with end portions for providing stroke limits that are offset by -5° and +5° with respect to the theoretical open and closed positions of said valve, a central portion being further provided for locking said valve open and closed, characterized in that said plate has, on a second side which is opposite to said first side, a second cam-like profile with end portions that provide stroke limits which are offset by angles that are larger than the offset provided by the end portions of said cam-like profile.
  • Figure 1 is a perspective view of the fluid-operated actuator with the stroke limit means arranged for offset by a few degrees
  • Figure 2 is a plan view of the actuator of Figure 1
  • Figure 3 is a diagram of the extent of the angular offset for opening and closure
  • Figure 4 is a plan view of the actuator, with the stroke limit means in the locking position
  • Figure 5 is a perspective view of the safety means that prevent access to the screws
  • Figure 6 is a perspective view of the change in position of the elongated plate for varying the adjustment possibilities
  • Figure 7 is a perspective view of the actuator with the plate arranged so as to allow a wide angular offset in the open and closed positions;
  • Figure 8 is a plan view of the actuator of Figure 7;
  • Figure 9 is a diagram of the possibilities of angular offset of the open and closed positions.
  • the fluid-operated actuator with improved stroke limit adjustment means comprises a containment body 2 which forms internally a chamber 3 in which mutually opposite pistons 4 can slide which act against preloaded springs 5 that produce the return stroke.
  • the pistons 4 are provided with rack-like portions 6, which engage a pinion formed on the control shaft 10, which is connected to a valve to be driven.
  • Stroke limit means are provided inside the containment body 2 by means of an elongated plate 20, which centrally forms a seat 21 for mating with the control shaft 10.
  • the elongated plate 20 has, on a first side, end portions 22, which can be engaged by adjustment screws 25 which can be accessed from the outside of the containment body 2, so as to provide the stroke limit, which can be varied by a few degrees and specifically from -5° to +5° with respect to the theoretical zero position, so that it is possible to better connect the fluid- operated actuator to the valve.
  • the plate 20 forms a lug 23, which allows open and closed locking by using longer adjustment screws
  • safety means consist of a padlock 30, which engages by means of its shackle 31 holes 32 formed in a locking body 33, which can be threaded by inserting in the slot
  • the locking body 30 cannot be extracted as long as the shackle 31 of the padlock is inserted in the holes 32.
  • the invention achieves the proposed aim and objects, and in particular the fact is stressed that the particular shape given to the plate 20 makes it possible, by means of a single element, to adapt to all the contingent needs, since the same plate makes it possible, by positioning a first side so that it is directed toward the adjustment screws, to have the usual adjustments of a few degrees for opening and closure as well as the locking position, whereas by reversing the plate, which is connected to the control shaft, it is possible to have a considerably wider angular offset in the open and closed positions, thus allowing better adaptation to all the contingent requirements of application.
  • the materials used may be any according to requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Damping Devices (AREA)
  • Vehicle Body Suspensions (AREA)
  • Combined Devices Of Dampers And Springs (AREA)
  • Preventing Unauthorised Actuation Of Valves (AREA)

Abstract

La présente invention concerne un actionneur commandé par fluide (1), pourvu d'un moyen amélioré de réglage de la limite de course, ce moyen comportant un corps de confinement (2) formant une chambre (3) dans laquelle coulisse au moins un piston (4) servant à l'actionnement d'une tige de commande (10) associée à une vanne à commander. Des limiteurs de course associés à la tige de commande (10) dans le corps de confinement sont constitués d'une plaque de forme allongée (20). Cette plaque présente un premier côté dont le profil en came est pourvu d'extrémités (22) constituant des limites de course décalées de -5° et +5° par rapport aux positions d'ouverture et de fermeture théoriques de la vanne. L'invention comporte également une partie centrale (23) prévue pour verrouiller la vanne en position ouverte et fermée. La plaque (20) présente, sur le second côté, opposé au premier, un second profil en came pourvu d'extrémités (24) constituant des limites de course décalées d'angles supérieurs au décalage assuré par les extrémités du profil en came.
PCT/EP2009/064006 2008-12-04 2009-10-23 Actionneur commandé par fluide, pourvu d'un moyen amélioré de réglage de la limite de course WO2010063515A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI2008A002150 2008-12-04
ITMI2008A002150A IT1392075B1 (it) 2008-12-04 2008-12-04 Attuatore fluidodinamico con mezzi perfezionati per la regolazione del finecorsa.

Publications (1)

Publication Number Publication Date
WO2010063515A1 true WO2010063515A1 (fr) 2010-06-10

Family

ID=41226294

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/064006 WO2010063515A1 (fr) 2008-12-04 2009-10-23 Actionneur commandé par fluide, pourvu d'un moyen amélioré de réglage de la limite de course

Country Status (2)

Country Link
IT (1) IT1392075B1 (fr)
WO (1) WO2010063515A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2495449A1 (fr) * 2011-03-01 2012-09-05 FESTO AG & Co. KG Dispositif d'entraînement rotatif hydraulique
ITBS20120078A1 (it) * 2012-05-04 2013-11-05 Actuatech S R L Attuatore pneumatico provvisto di finecorsa regolabile
EP2837862A1 (fr) * 2013-08-12 2015-02-18 Activos Alan, S.L. Un dispositif de limitation d'ouverture ou de fermeture de vannes
WO2015090493A1 (fr) * 2013-12-16 2015-06-25 Hydac Filtertechnik Gmbh Dispositif à soupape hydraulique
US20210009195A1 (en) * 2019-07-12 2021-01-14 R.H. Sheppard Co., Inc. End-of-travel relief in a power steering system
DE102021106884B3 (de) 2021-03-19 2021-11-11 Bar Pneumatische Steuerungssysteme Gmbh Schwenkantrieb

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0350596B1 (fr) * 1988-07-13 1992-12-30 CHEMAT GmbH Armaturen für Industrie- und Nuklearanlagen Dispositif pour limiter et ajuster la voie de réglage des armatures
US5329959A (en) * 1992-10-29 1994-07-19 Bettis Corporation Locking device
US6568422B2 (en) * 2000-12-14 2003-05-27 Leopold J. Niessen Valve locking mechanism and method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0350596B1 (fr) * 1988-07-13 1992-12-30 CHEMAT GmbH Armaturen für Industrie- und Nuklearanlagen Dispositif pour limiter et ajuster la voie de réglage des armatures
US5329959A (en) * 1992-10-29 1994-07-19 Bettis Corporation Locking device
US6568422B2 (en) * 2000-12-14 2003-05-27 Leopold J. Niessen Valve locking mechanism and method

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2495449A1 (fr) * 2011-03-01 2012-09-05 FESTO AG & Co. KG Dispositif d'entraînement rotatif hydraulique
ITBS20120078A1 (it) * 2012-05-04 2013-11-05 Actuatech S R L Attuatore pneumatico provvisto di finecorsa regolabile
WO2013164716A1 (fr) * 2012-05-04 2013-11-07 Actuatech S.P.A. Actionneur pneumatique pourvu d'une position finale ajustable
EP2837862A1 (fr) * 2013-08-12 2015-02-18 Activos Alan, S.L. Un dispositif de limitation d'ouverture ou de fermeture de vannes
US9605763B2 (en) 2013-08-12 2017-03-28 Ingevert 2000, S.L. Opening or closure limiting device suitable for valves
WO2015090493A1 (fr) * 2013-12-16 2015-06-25 Hydac Filtertechnik Gmbh Dispositif à soupape hydraulique
US9791065B2 (en) 2013-12-16 2017-10-17 Hydac Filtertechnik Gmbh Hydraulic valve device
US20210009195A1 (en) * 2019-07-12 2021-01-14 R.H. Sheppard Co., Inc. End-of-travel relief in a power steering system
US11643136B2 (en) * 2019-07-12 2023-05-09 R.H. Sheppard Co., Inc. End-of-travel relief in a power steering system
DE102021106884B3 (de) 2021-03-19 2021-11-11 Bar Pneumatische Steuerungssysteme Gmbh Schwenkantrieb
WO2022194528A1 (fr) * 2021-03-19 2022-09-22 Bar Pneumatische Steuerungssysteme Gmbh Actionneur à pivot

Also Published As

Publication number Publication date
IT1392075B1 (it) 2012-02-09
ITMI20082150A1 (it) 2010-06-05

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