EP0017592A1 - Hydraulische Stellvorrichtung mit fünf Stellungen - Google Patents

Hydraulische Stellvorrichtung mit fünf Stellungen Download PDF

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Publication number
EP0017592A1
EP0017592A1 EP80400457A EP80400457A EP0017592A1 EP 0017592 A1 EP0017592 A1 EP 0017592A1 EP 80400457 A EP80400457 A EP 80400457A EP 80400457 A EP80400457 A EP 80400457A EP 0017592 A1 EP0017592 A1 EP 0017592A1
Authority
EP
European Patent Office
Prior art keywords
neutral position
movable
positions
piston
hydraulic
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
EP80400457A
Other languages
English (en)
French (fr)
Other versions
EP0017592B1 (de
Inventor
Philippe Debrus
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.)
DBA SA
Original Assignee
DBA SA
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 DBA SA filed Critical DBA SA
Publication of EP0017592A1 publication Critical patent/EP0017592A1/de
Application granted granted Critical
Publication of EP0017592B1 publication Critical patent/EP0017592B1/de
Expired 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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
    • F15B11/12—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action
    • F15B11/13—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action using separate dosing chambers of predetermined volume
    • 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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
    • F15B11/12—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action
    • F15B11/121—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action providing distinct intermediate positions
    • 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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
    • F15B11/12—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action
    • F15B11/121—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action providing distinct intermediate positions
    • F15B11/123—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action providing distinct intermediate positions by means of actuators with fluid-operated stops
    • 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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0401—Valve members; Fluid interconnections therefor
    • F15B13/0402—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86574—Supply and exhaust
    • Y10T137/86582—Pilot-actuated
    • Y10T137/86606—Common to plural valve motor chambers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86574—Supply and exhaust
    • Y10T137/86582—Pilot-actuated
    • Y10T137/86614—Electric
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86574—Supply and exhaust
    • Y10T137/86622—Motor-operated
    • Y10T137/8663—Fluid motor

Definitions

  • the subject of the present invention is a hydraulic actuation device with five positions and digital input, and more precisely a device of this kind comprising a movable output member occupying at rest a neutral position towards which the elastic centering means urge it and capable of moving against the latter on either side of said neutral position to occupy one or the other of two working positions defined by stop means, the movements of this movable member being caused by opposing hydraulic actuating means each assigned to a direction of movement and themselves selectively controlled by two control members in two positions receiving input orders of a digital nature.
  • the movable outlet member is constituted by the drawer of a four-way hydraulic distributor, which can for example control a double-acting hydraulic cylinder; in this case, the neutral position of the dispenser drawer isolates the two working chambers of the cylinder from a source of pressurized fluid, thus immobilizing its piston, while both of the working positions of the drawer cause placing one or other of the actuator's working chambers in communication with this source of pressurized fluid, thus causing its piston to move in one direction or the other at the same speed or not.
  • the dispenser drawer is likely to occupy only three distinct positions, this depending on the input orders issued in the form of binary control words to the control members themselves constituted, for example , by three-way and two-position solenoid valves. And there is therefore only one speed for each direction of movement of the piston of the hydraulic cylinder.
  • the dispenser drawer can occupy a total of five distinct positions, namely, in addition to its neutral position, two successive working positions on either side thereof, these successive working positions corresponding to increasing values of the gain in flow rate of the pressurized fluid towards the considered working chamber of the jack.
  • Such a result can be achieved, for example, by means of movable stops in turn acting on the valve spool, but re q uiert priori increased complexity of the control elements, since, obviously, the two solenoid valves two positions each can only receive at most four separate binary command words.
  • the present invention aims to create, in a hydraulic control device of the kind mentioned above, two additional working positions of the movable outlet member without having to resort to additional control means, this so as to obtain a total of five distinct equilibrium positions using only four binary control words.
  • This object is achieved, in accordance with the invention, thanks to the fact that each of the hydraulic actuating means consists of two active surfaces acting in the same direction on the movable outlet member and acting one after the other to communicate to said member two successive displacement steps, the pressurization of the first of these surfaces being caused by one of the two control members, and that of the second surface being caused by the other control member but does not being however made possible only when the movable member has already accomplished a first step of displacement in the direction considered.
  • each of the hydraulic actuating means are respectively constituted by the face of a first piston of relatively small section whose stroke is limited by a stop at a first step movement of the movable outlet member and by the face of a second piston of relatively large section mounted in series with the previous one and whose stroke it also limited by a stop makes it possible to cover another step of movement of said member
  • the control members associated with said hydraulic actuation means each consist of a three-way valve and two positions making it possible to connect to a supply line in fluid under pressure or at a return line the face of the first piston of the actuating means assigned to a direction of movement of the movable outlet member and the face of the second piston of the actuating means assigned to the opposite direction of movement, and the connection between said valve and said face of the second piston is controlled by the position itself of the movable outlet member so as to be established only when said member has already accomplished a first step of movement in the direction considered .
  • connection between said valve and said face of the second piston can advantageously be ensured by means of a passage chamber formed in the movable outlet member, the edges which delimit this chamber cooperating with communication orifices. fixed so that it is connected either to the corresponding valve or to the return line.
  • the scope of the invention is also not limited to obtaining two successive equilibrium positions on either side of the neutral position of the movable member Release ; it can also extend in certain particular applications to obtaining an equilibrium position only on one side of the neutral position and three successive equilibrium positions on the other side of the latter; in such a case, the hydraulic cylinder controlled by such a device would be provided with a single speed of movement in one direction and three different speeds in the other direction. Other combinations would still be possible within the framework of the present invention.
  • the hydraulic actuation device comprises a movable outlet member 10 here constituted by a hydraulic distributor drawer, which is provided with five cylindrical bearings 12, 14, 16, 18 and 20.
  • This drawer 10 is slidably received in a fixed body / 22, which is itself pierced with a certain number of orifices intended to cooperate with the edges delimiting the cylindrical surfaces of the drawer 10 for define fluid passages with variable cross-section.
  • one of these orifices is connected via a pipe 25 to a source of high pressure fluid HP (not shown in the drawing); while four other orifices 26, 28, 30 and 32 are connected via another pipe 27 to a BP fluid return tank (not shown either in the drawing either).
  • Two other orifices 34 and 36 are respectively connected, via outlet pipes U 1 , U 2 , to the two working chambers of a double-acting hydraulic cylinder, which is not in itself part of the invention and is not shown in the drawing.
  • Two other additional orifices 38 and 40 are connected respectively, by means of pipes 42 and 44, to two pressure chambers 46 and 48 ′ as well as to the outputs of two electrovalves EV and EV 2 constituting the control members proper of the device.
  • Each of the two pressure chambers 46 and 48 which are arranged coaxially with respect to the distributor slide 10 inside the body 22, contains a compression spring 50 or 52 which, by means of a bowl 54 or 56 , tends to push back towards the distributor drawer a piston 58 or 60 which slides in leaktight manner in a fixed wall of the body 22, and the end of which is normally held in contact with one of the end faces of the drawer 10.
  • Each solenoid valves EV 1 and EV 2 of the three-way and two-position type, have two inputs respectively connected by bypass pipes to lines 25 and 27.
  • Switches I 1 and 1 2 are respectively provided for actuating these two solenoid valves, this so that, when the switch is open, the associated solenoid valve occupies a position such that it puts its output in communication with the BP return tank, while, when energized, it communicates this same outlet with the source of HP fluid under pressure.
  • the hydraulic actuating means which control the movements of the outlet member to the right or to the left against the elastic centering means constituted by the springs 50 and 52 each consist of two active surfaces acting in the same direction on this output member (drawer 10) and intervening one after the other to communicate two movement steps to it successive, the pressurization of the first of these surfaces being caused by one of the control electrovalves EV 1 or EV 2 and that of the second surface being caused by the other of these electrovalves, but not being made possible only when this output member has already accomplished a first step of displacement in the desired direction.
  • each of these hydraulic actuating means consist respectively of the face of a first piston 58 or 60 of relatively small section, the stroke of which is limited to a first step of displacement of the output member 10, and by the end face of the latter playing the role of a second piston of relatively large section which is mounted in series with the previous one and whose stroke also limited allows to cover a second step of movement .
  • the face of the second piston can itself only be pressurized provided that the movable outlet member 10 has already accomplished a first step of movement in the direction considered. It is obvious that the application of this general principle of the invention can be carried out by other technological means than those described above, which cannot therefore limit the scope of the invention.
  • control solenoid valves with reverse logic function, that is to say solenoid valves whose non-excitation state would result in a communication of their output with the source of pressurized fluid; in such a case, the binary control word corresponding to the neutral position would obviously be "11", those controlling the intermediate equilibrium positions would be “01” and “10” respectively, and the single control word for the positions d 'extreme balance would be "00" succeeding the previous ones.
  • FIG. 4 of the drawings illustrates, simply by way of example, an alternative embodiment in which a single equilibrium position of the movable outlet member is provided on one side of the neutral position and three equilibrium positions of the other side of this same position, the representation of the design corresponding to the neutral position.
  • the ranges 14 'and 18' of the movable slide 10 ' are no longer symmetrically shaped with respect to its central range 16', as was the case in the embodiment of FIGS. 1 to 3.
  • control members here consist of two solenoid valves EV ' 1 and EV with opposite logic functions, the first establishing communication with the source of HP pressurized fluid when it is not energized (switch I ' 1 open), while the second establishes the same communication on the contrary when it is energized (switch I 2 closed).
  • the pressure chamber 46 is connected to the source of HP fluid while chamber 48 is isolated therefrom; it follows that the piston 58 is pressed to the left and pushes the slide 10 'against the force developed by the spring 52; the distributor is however constructed in such a way that, for this position, the central cylindrical bearing surface 16 'of the slide 10' closes on its two sides the orifice for admission of pressurized fluid 24, while the bearing surfaces 14 'and 18' close the return orifices 28 and 30 respectively.
  • the outlet pipes U 1 and U 2 are, as well as the working chambers of the controlled hydraulic cylinder, completely closed, which corresponds to the immobilization of the piston of this cylinder.
  • the closing of the switch I 2 will have the effect of moving the drawer 10 ′ to the left, until its end face comes into abutment left against the wall of the fixed body 22.
  • closing the switch I ' 1 would have the effect of eliminating the imbalance between the hydraulic thrusts acting on the slide 10', so that the latter would move one first step to the right under the action of the centering means constituted by the springs 50 and 52.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Fluid-Driven Valves (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Servomotors (AREA)
  • Multiple-Way Valves (AREA)
  • Actuator (AREA)
EP80400457A 1979-04-06 1980-04-04 Hydraulische Stellvorrichtung mit fünf Stellungen Expired EP0017592B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7908814 1979-04-06
FR7908814A FR2453306B1 (fr) 1979-04-06 1979-04-06 Dispositif d'actionnement hydraulique a cinq positions

Publications (2)

Publication Number Publication Date
EP0017592A1 true EP0017592A1 (de) 1980-10-15
EP0017592B1 EP0017592B1 (de) 1983-11-02

Family

ID=9224088

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80400457A Expired EP0017592B1 (de) 1979-04-06 1980-04-04 Hydraulische Stellvorrichtung mit fünf Stellungen

Country Status (5)

Country Link
US (1) US4319609A (de)
EP (1) EP0017592B1 (de)
JP (1) JPS55135271A (de)
DE (1) DE3065442D1 (de)
FR (1) FR2453306B1 (de)

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Publication number Priority date Publication date Assignee Title
US4531536A (en) * 1982-08-02 1985-07-30 Modular Controls Corporation Flow divider-combiner valve
JPS5983878A (ja) * 1982-11-04 1984-05-15 Toshiba Mach Co Ltd 流量調整弁
US4593719A (en) * 1984-11-30 1986-06-10 Leonard Willie B Spool valve
JPH0623563B2 (ja) * 1985-04-12 1994-03-30 株式会社豊田自動織機製作所 電気式比例制御弁制御装置
JP2544693Y2 (ja) * 1992-04-30 1997-08-20 エスエムシー株式会社 安全制御装置
US6161770A (en) * 1994-06-06 2000-12-19 Sturman; Oded E. Hydraulically driven springless fuel injector
US6257499B1 (en) 1994-06-06 2001-07-10 Oded E. Sturman High speed fuel injector
US6148778A (en) * 1995-05-17 2000-11-21 Sturman Industries, Inc. Air-fuel module adapted for an internal combustion engine
US5577434A (en) * 1995-09-14 1996-11-26 Danfoss Inc. Hydraulic valve assembly
US6105616A (en) 1997-03-28 2000-08-22 Sturman Industries, Inc. Double actuator control valve that has a neutral position
JP3959565B2 (ja) * 1997-12-16 2007-08-15 Ｓｍｃ株式会社 電磁パイロット式３位置切換弁
AU2459799A (en) * 1998-01-20 1999-08-02 Triconex, Incorporated Two out of three voting solenoid arrangement
US6085991A (en) * 1998-05-14 2000-07-11 Sturman; Oded E. Intensified fuel injector having a lateral drain passage
SE515685C2 (sv) 1998-11-26 2001-09-24 Volvo Penta Ab Styrservo, t ex för båtar
US6478048B2 (en) 1999-01-19 2002-11-12 Triconex, Incorporated Two out of three voting solenoid arrangement
DE10010690B4 (de) * 2000-03-04 2004-03-25 Festo Ag & Co. Ventil
DE10023340A1 (de) * 2000-05-12 2001-11-15 Claas Industrietechnik Gmbh Steuerventil zum Umschalten einer hydraulischen Kolben-Zylinder-Einheit für den Antrieb eines oszillierenden Maschinenteils
US6739293B2 (en) * 2000-12-04 2004-05-25 Sturman Industries, Inc. Hydraulic valve actuation systems and methods
US6585004B1 (en) * 2002-01-17 2003-07-01 Delaware Capital Formation, Inc. Multi-stage flow control
US20030221730A1 (en) * 2002-01-17 2003-12-04 Porter Don B. Multi-stage multi-piston valve
US20040051066A1 (en) * 2002-09-13 2004-03-18 Sturman Oded E. Biased actuators and methods
DE102004048689B3 (de) * 2004-10-06 2005-10-20 Siemens Ag Zweistufiges Servoventil
WO2008051212A1 (en) * 2006-10-23 2008-05-02 Norgren, Inc. Exhaust venting for a fluid control device
US20100130958A1 (en) * 2008-11-26 2010-05-27 David Kang Device and Methods for Subcutaneous Delivery of High Viscosity Fluids
US8640787B2 (en) * 2009-12-30 2014-02-04 Daniel F. Rohrer Portable post driving apparatus
DE102010005229A1 (de) * 2010-01-21 2011-07-28 Hydac Fluidtechnik GmbH, 66280 Ventilvorrichtung
WO2011116304A1 (en) * 2010-03-19 2011-09-22 Halozyme, Inc. Gas-pressured medication delivery device
DE102010050323A1 (de) * 2010-11-05 2012-05-10 Parker Hannifin Gmbh Hydraulisches Steuerventil mit einem in dessen hohl ausgebildeten Steuerschieber angeordneten Vorsteuerkolben
DE102010050325A1 (de) * 2010-11-05 2012-05-10 Parker Hannifin Gmbh Hydraulisches Steuerventil mit einem in dessen hohl ausgebildeten Steuerschieber angeordneten vier Steuerkanten aufweisenden Vorsteuerkolben
JP2016508205A (ja) * 2012-12-31 2016-03-17 ヴァンダービルト ユニバーシティ ダブルソレノイド構成を有する方向制御弁
EP3502487B1 (de) * 2017-12-22 2021-08-25 Hamilton Sundstrand Corporation Servoventil

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1970530A (en) * 1930-11-11 1934-08-14 Donald H West Hydraulic actuating mechanism
US2157240A (en) * 1935-02-21 1939-05-09 Ex Cell O Corp Valve structure
DE1946044A1 (de) * 1969-09-11 1971-03-18 Frisch Geb Kg Eisenwerk Steuerung doppeltwirkender Hydraulikzylinder
FR2307998A2 (fr) * 1975-04-18 1976-11-12 Danfoss As Dispositif actionneur hydraulique

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Publication number Priority date Publication date Assignee Title
US4067357A (en) * 1974-06-14 1978-01-10 Herion-Werke Kg Pilot-operated directional control valve

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1970530A (en) * 1930-11-11 1934-08-14 Donald H West Hydraulic actuating mechanism
US2157240A (en) * 1935-02-21 1939-05-09 Ex Cell O Corp Valve structure
DE1946044A1 (de) * 1969-09-11 1971-03-18 Frisch Geb Kg Eisenwerk Steuerung doppeltwirkender Hydraulikzylinder
FR2307998A2 (fr) * 1975-04-18 1976-11-12 Danfoss As Dispositif actionneur hydraulique

Also Published As

Publication number Publication date
EP0017592B1 (de) 1983-11-02
FR2453306A1 (fr) 1980-10-31
US4319609A (en) 1982-03-16
JPS55135271A (en) 1980-10-21
FR2453306B1 (fr) 1986-03-14
DE3065442D1 (en) 1983-12-08
JPH0114474B2 (de) 1989-03-13

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