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EP0331854A1 - Druckmittelbetätigte Einrichtung für den Antrieb einer Drehwelle - Google Patents

Druckmittelbetätigte Einrichtung für den Antrieb einer Drehwelle 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
English (en)
French (fr)
Other versions
EP0331854B1 (de
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
Original Assignee
Applications Mecaniques et Robinetterie Industrielle AMRI
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 Applications Mecaniques et Robinetterie Industrielle AMRI filed Critical Applications Mecaniques et Robinetterie Industrielle AMRI
Priority to DE8888400548T priority Critical patent/DE3864814D1/de
Priority to ES88400548T priority patent/ES2010174B3/es
Priority to DE198888400548T priority patent/DE331854T1/de
Priority to EP88400548A priority patent/EP0331854B1/de
Priority to US07/321,195 priority patent/US4995305A/en
Priority to JP1057665A priority patent/JPH01312206A/ja
Publication of EP0331854A1 publication Critical patent/EP0331854A1/de
Application granted granted Critical
Publication of EP0331854B1 publication Critical patent/EP0331854B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F15B15/066—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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
EP88400548A 1988-03-09 1988-03-09 Druckmittelbetätigte Einrichtung für den Antrieb einer Drehwelle Expired - Lifetime EP0331854B1 (de)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DE8888400548T DE3864814D1 (de) 1988-03-09 1988-03-09 Druckmittelbetaetigte einrichtung fuer den antrieb einer drehwelle.
ES88400548T ES2010174B3 (es) 1988-03-09 1988-03-09 Accionador que utiliza un fluido a presion para arrastrar en rotacion a un arbol rotativo
DE198888400548T DE331854T1 (de) 1988-03-09 1988-03-09 Fluessigkeitsbetaetigungseinrichtung fuer den antrieb einer drehwelle.
EP88400548A EP0331854B1 (de) 1988-03-09 1988-03-09 Druckmittelbetätigte Einrichtung für den Antrieb einer Drehwelle
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
JP1057665A JPH01312206A (ja) 1988-03-09 1989-03-09 アクチュエータ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP88400548A EP0331854B1 (de) 1988-03-09 1988-03-09 Druckmittelbetätigte Einrichtung für den Antrieb einer Drehwelle

Publications (2)

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

Family

ID=8200360

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88400548A Expired - Lifetime EP0331854B1 (de) 1988-03-09 1988-03-09 Druckmittelbetätigte Einrichtung für den Antrieb einer Drehwelle

Country Status (5)

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

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1285060B1 (it) * 1996-04-26 1998-06-03 Magneti Marelli Spa Gruppo attuatore a comando tramite fluido.
JP4944696B2 (ja) * 2006-08-04 2012-06-06 株式会社キッツ スプリングリターン式空圧アクチュエータ
US11976745B2 (en) * 2019-11-25 2024-05-07 Emerson Process Management Regulator Technologies, Inc. Scotch yoke actuator

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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 (de) * 1971-10-19 1973-05-03 Saab Scania Ab Vorrichtung zum umsetzen einer axialbewegung in eine drehbewegung
FR2260705A1 (de) * 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

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR535262A (fr) * 1920-05-27 1922-04-12 Cie Gen De Signalisation Perfectionnements à la commande à distance des moteurs des treuils, cabestans et autres machines
GB255245A (en) * 1925-08-06 1926-07-22 John William Wood Improved variable stroke engine for operating jigging or reciprocating conveyors andlike appliances
GB838647A (en) * 1956-12-28 1960-06-22 Alfred Roland Cross Improvements in or relating to servo motors
US3709106A (en) * 1970-09-14 1973-01-09 H Shafer Piston operator for imparting rotary motion
DE2344932A1 (de) * 1972-10-19 1974-04-25 Homer John Shafer Doppelzylinderantrieb zur herbeifuehrung einer drehbewegung
GB2069051B (en) * 1980-01-24 1983-06-22 Camtorc Ltd Rotary actuator
JPS5824605A (ja) * 1981-08-04 1983-02-14 Tomoe Gijutsu Kenkyusho:Kk ロ−タリアクチユエ−タ
JPS58131412A (ja) * 1982-01-28 1983-08-05 Hideo Nakagawa 流体圧シリンダ
CA1271054A (en) * 1985-10-11 1990-07-03 Paul Anthony Richter Rotary/linear convertor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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 (de) * 1971-10-19 1973-05-03 Saab Scania Ab Vorrichtung zum umsetzen einer axialbewegung in eine drehbewegung
FR2260705A1 (de) * 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
EP0331854B1 (de) 1991-09-11
DE331854T1 (de) 1989-12-28
US4995305A (en) 1991-02-26
DE3864814D1 (de) 1991-10-17
ES2010174B3 (es) 1992-03-01
JPH01312206A (ja) 1989-12-18
ES2010174A4 (es) 1989-11-01

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