EP0767310A3 - Hydraulic actuator - Google Patents

Hydraulic actuator Download PDF

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Publication number
EP0767310A3
EP0767310A3 EP96115789A EP96115789A EP0767310A3 EP 0767310 A3 EP0767310 A3 EP 0767310A3 EP 96115789 A EP96115789 A EP 96115789A EP 96115789 A EP96115789 A EP 96115789A EP 0767310 A3 EP0767310 A3 EP 0767310A3
Authority
EP
European Patent Office
Prior art keywords
valve
actuating piston
working chamber
hydraulic actuator
control
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
EP96115789A
Other languages
German (de)
French (fr)
Other versions
EP0767310A2 (en
EP0767310B1 (en
Inventor
Robert Sollinger
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.)
Airbus Helicopters Deutschland GmbH
Original Assignee
Eurocopter Deutschland GmbH
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 Eurocopter Deutschland GmbH filed Critical Eurocopter Deutschland GmbH
Publication of EP0767310A2 publication Critical patent/EP0767310A2/en
Publication of EP0767310A3 publication Critical patent/EP0767310A3/en
Application granted granted Critical
Publication of EP0767310B1 publication Critical patent/EP0767310B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F15B9/00—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member
    • F15B9/02—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type
    • F15B9/08—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type controlled by valves affecting the fluid feed or the fluid outlet of the servomotor
    • F15B9/10—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type controlled by valves affecting the fluid feed or the fluid outlet of the servomotor in which the controlling element and the servomotor each controls a separate member, these members influencing different fluid passages or the same passage

Landscapes

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

Abstract

Um bei einem hydraulischen Stellantrieb für die Blatttwinkelsteuerung eines Hubschraubers mit einem Hydraulikaktuator (2) mit mindestens einer stellkolbenbegrenzten Arbeitskammer (8, 10) und einem die Arbeitskammer selektiv mit der Hydraulikdruckquelle (P) bzw. dem Rücklauf (R) verbindenden Servoventil (4) mit einem steuerkommandobetätigten Ventilschieber (20) und einer die Ventilstellung entsprechend der Stellkolbenbewegung gegensinnig zur Steuerkommandoeingabe beeinflussenden Ventil-Rücksteuerung auf konstruktiv einfache Weise den Bauaufwand zu verringern und das Einbaugewicht und -volumen wesentlich zu reduzieren, enthält der Aktuator-Stellkolben (12) erfindungsgemäß einen zusammen mit dem Ventilschieber das Servoventil einschließlich der Ventil-Rücksteuerung bildenden Kolbenabschnitt (16), welcher mit einem im Bereich des Stellkolbens in die Arbeitskammer mündenden Ventilauslaß (32 bzw. 34) versehen ist.

Figure 00000001
For a hydraulic actuator for the blade angle control of a helicopter with a hydraulic actuator (2) with at least one actuating piston-limited working chamber (8, 10) and a servo valve (4) selectively connecting the working chamber with the hydraulic pressure source (P) or the return (R) a control command operated valve spool (20) and a valve reverse control influencing the valve position corresponding to the actuating piston movement in the opposite direction to the control command input to reduce the construction effort in a structurally simple manner and to significantly reduce the installation weight and volume, the actuator actuating piston (12) according to the invention contains one together with the valve slide the servo valve including the valve reverse control forming piston section (16) which is provided with a valve outlet (32 or 34) opening into the working chamber in the region of the actuating piston.
Figure 00000001
EP96115789A 1995-10-07 1996-10-02 Hydraulic actuator Expired - Lifetime EP0767310B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19537417A DE19537417C2 (en) 1995-10-07 1995-10-07 Hydraulic actuator
DE19537417 1995-10-07

Publications (3)

Publication Number Publication Date
EP0767310A2 EP0767310A2 (en) 1997-04-09
EP0767310A3 true EP0767310A3 (en) 1999-09-01
EP0767310B1 EP0767310B1 (en) 2005-04-20

Family

ID=7774293

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96115789A Expired - Lifetime EP0767310B1 (en) 1995-10-07 1996-10-02 Hydraulic actuator

Country Status (2)

Country Link
EP (1) EP0767310B1 (en)
DE (2) DE19537417C2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3494858B2 (en) * 1997-07-29 2004-02-09 株式会社荏原製作所 Hydraulic servo device
DE19820102B4 (en) * 1998-05-06 2004-02-05 Kracht Gmbh Oszillier cylinder
DE19841855B4 (en) * 1998-09-14 2006-10-26 Zf Luftfahrttechnik Gmbh Single sheet control device for a helicopter main rotor
DE29818762U1 (en) 1998-10-21 1998-12-24 Festo AG & Co, 73734 Esslingen Fluid operated working device
CN114215804B (en) * 2022-02-22 2022-04-29 中国空气动力研究与发展中心高速空气动力研究所 Electro-hydraulic servo system for driving curved knife supporting mechanism

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB654415A (en) * 1947-02-28 1951-06-20 Rene Leduc Improvements in control systems especially for aircraft
GB841995A (en) * 1955-10-31 1960-07-20 Boulton Aircraft Ltd Improvements in or relating to fluid-pressure servo mechanisms
US3135164A (en) * 1959-11-16 1964-06-02 Bosch Arma Corp Servo mechanism
US3646849A (en) * 1970-02-10 1972-03-07 Lucas Industries Ltd Servomechanism
DE2207579A1 (en) * 1972-02-18 1973-08-30 Claas Maschf Gmbh Geb ARRANGEMENT FOR CONTROLLING ADJUSTABLE HYDRAULIC PUMPS
US3757640A (en) * 1971-12-01 1973-09-11 Avco Corp Simplified follower servomechanism
DE2211994A1 (en) * 1972-03-09 1973-09-13 Ronald Arthur Foley HYDRAULIC SWITCHING DEVICE
DE2300161A1 (en) * 1973-01-03 1974-07-11 Tadashi Saito FLUID PULSE CYLINDER FOR NUMERICAL CONTROL
GB2072886A (en) * 1980-02-22 1981-10-07 Asea Ab Servo assembly
EP0088017A2 (en) * 1982-02-26 1983-09-07 COMPAGNIE PARISIENNE D'OUTILLAGE A AIR COMPRIME Société anonyme dite: Hydraulic directional spool valve
WO1993019300A1 (en) * 1992-03-23 1993-09-30 C.W.F. Hamilton & Co. Limited Hydraulic cylinder feedback control

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2832898C2 (en) * 1978-07-27 1985-12-19 Messerschmitt-Bölkow-Blohm GmbH, 8012 Ottobrunn Irreversible hydraulic actuator

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB654415A (en) * 1947-02-28 1951-06-20 Rene Leduc Improvements in control systems especially for aircraft
GB841995A (en) * 1955-10-31 1960-07-20 Boulton Aircraft Ltd Improvements in or relating to fluid-pressure servo mechanisms
US3135164A (en) * 1959-11-16 1964-06-02 Bosch Arma Corp Servo mechanism
US3646849A (en) * 1970-02-10 1972-03-07 Lucas Industries Ltd Servomechanism
US3757640A (en) * 1971-12-01 1973-09-11 Avco Corp Simplified follower servomechanism
DE2207579A1 (en) * 1972-02-18 1973-08-30 Claas Maschf Gmbh Geb ARRANGEMENT FOR CONTROLLING ADJUSTABLE HYDRAULIC PUMPS
DE2211994A1 (en) * 1972-03-09 1973-09-13 Ronald Arthur Foley HYDRAULIC SWITCHING DEVICE
DE2300161A1 (en) * 1973-01-03 1974-07-11 Tadashi Saito FLUID PULSE CYLINDER FOR NUMERICAL CONTROL
GB2072886A (en) * 1980-02-22 1981-10-07 Asea Ab Servo assembly
EP0088017A2 (en) * 1982-02-26 1983-09-07 COMPAGNIE PARISIENNE D'OUTILLAGE A AIR COMPRIME Société anonyme dite: Hydraulic directional spool valve
WO1993019300A1 (en) * 1992-03-23 1993-09-30 C.W.F. Hamilton & Co. Limited Hydraulic cylinder feedback control

Also Published As

Publication number Publication date
DE59611218D1 (en) 2005-05-25
EP0767310A2 (en) 1997-04-09
DE19537417A1 (en) 1997-04-10
EP0767310B1 (en) 2005-04-20
DE19537417C2 (en) 1997-07-24

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