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EP0092480B1 - Servo-moteur hydraulique - Google Patents

Servo-moteur hydraulique Download PDF

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Publication number
EP0092480B1
EP0092480B1 EP83400756A EP83400756A EP0092480B1 EP 0092480 B1 EP0092480 B1 EP 0092480B1 EP 83400756 A EP83400756 A EP 83400756A EP 83400756 A EP83400756 A EP 83400756A EP 0092480 B1 EP0092480 B1 EP 0092480B1
Authority
EP
European Patent Office
Prior art keywords
jack
piston
pump
servo
cylinder
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.)
Expired
Application number
EP83400756A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0092480A1 (fr
Inventor
Jacques Henri Chatelin
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT83400756T priority Critical patent/ATE25132T1/de
Publication of EP0092480A1 publication Critical patent/EP0092480A1/fr
Application granted granted Critical
Publication of EP0092480B1 publication Critical patent/EP0092480B1/fr
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
    • F15B7/00—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors
    • F15B7/005—With rotary or crank input
    • F15B7/006—Rotary pump input
    • 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
    • F15B11/126—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 of the standard type with special circuit controlling means

Definitions

  • the invention relates to a hydraulic servo motor comprising a double-acting cylinder intended to be connected by its rod to a movable member to be moved and positioned with precision, this cylinder being completely filled with liquid, the displacement of the piston being carried out in a direction by the direct transfer of the liquid from one chamber to the other of the jack by an electric vibrator pump supplied from an alternating current source, while an electromagnetic member also supplied from the alternating current source is connected in parallel to the vibrator pump in order to reverse the direction of movement of the piston when this member is actuated.
  • a hydraulic step-by-step control arrangement which comprises a double-acting cylinder and the two chambers of which are each supplied by a vibrator pump from a fluid reservoir.
  • Each supply circuit of one of the cylinder chambers includes a device for returning to the reservoir, which is actuated each time the vibrator pump of the other chamber is energized.
  • a hydraulic control device which comprises two single-acting cylinders, each associated with a motor member constituted by a vibrator pump.
  • the pistons of the two cylinders are connected by means of a rod and a spring while non-return valves direct the fluid from one of the cylinders to the other when one or the other of the pumps vibrator is activated.
  • the presence of the spring does not ensure an exact correspondence of the two pistons of the cylinders, especially since in one of the cylinders, the surface for applying the pressure of the fluid on the piston is reduced due to the presence of the rod of this piston, while in the other cylinder, such a piston is not provided.
  • the object of the present invention is in particular to remedy these drawbacks and, in particular, to define the construction of a hydraulic servo-motor which provides direct servo-control to the orders coming from a process computer, without analog conversion or auxiliary device, this servo motor being of a great precision of displacement and positioning, while the reversal of the direction of displacement is instantaneous, without dead zone, in order to ensure the rigorous proportionality between the effect obtained and the command of order.
  • This servo motor is also designed so that it is moved to a safety position when there is a power cut.
  • the present invention is, for this purpose, characterized in that the cylinder is a double rod cylinder, while a spring is disposed between one end of the cylinder and the piston of the cylinder, in order to constantly tend to bring the piston towards a end of the cylinder, so that it opposes the pressure exerted by the vibrator pump, and in that a so-called safety solenoid valve, open at rest, is connected to communicate the two chambers of the jack when the supply from the AC power source is interrupted.
  • the servo motor comprises a double-acting cylinder 1 and double rod, the piston 2 being provided with two rods 3 1 , 3 2 of the same section which are intended to be connected to the organ to be enslaved.
  • the chambers 1 1 and 1 2 delimited by the piston 2 are of the same section, so as to obtain an identical displacement of the piston 2 in one direction or another for the same volume of fluid introduced through the end orifices 4 1 , 4 2 of the cylinder 1.
  • the vibrator pump 6, as well as the solenoid valve 8 are supplied from the AC voltage U of the sector by means of relays 9 1 , 9 2 , themselves controlled by the time pulses coming from a computer.
  • the solenoid valve 7 which is open when it is not energized, is supplied directly by the voltage U of the mains or other network and is therefore normally closed.
  • the vibrator pump 6 When the computer supplies a control pulse C + to relay 9 i , the vibrator pump 6 is energized, the vibrations of this pump being established for the duration of the control pulse C + and at a frequency corresponding to the frequency of the mains voltage.
  • the spring 11 disposed in the chamber 1 1 1 of the cylinder and acting on the piston 2, moves the piston in the opposite direction of the arrow F at a controlled rate by the section of the calibrated orifice 10.
  • the solenoid valve 8 has been replaced by a second vibrator pump 12 which is in head-to-tail position relative to the pump 6.
  • one of the two pumps 6 or 12 is supplied by the mains voltage U via the relays 9 1 or 9 2 , depending on the control pulse C + or C- coming from the computer.

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-Pressure Circuits (AREA)
  • Valve Device For Special Equipments (AREA)
  • Servomotors (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Actuator (AREA)
  • Control Of Electric Motors In General (AREA)
  • Hydraulic Motors (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Reciprocating Pumps (AREA)
EP83400756A 1982-04-19 1983-04-18 Servo-moteur hydraulique Expired EP0092480B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83400756T ATE25132T1 (de) 1982-04-19 1983-04-18 Hydraulischer stellmotor.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8206683A FR2525292B1 (fr) 1982-04-19 1982-04-19 Servo-moteur hydraulique
FR8206683 1982-04-19

Publications (2)

Publication Number Publication Date
EP0092480A1 EP0092480A1 (fr) 1983-10-26
EP0092480B1 true EP0092480B1 (fr) 1987-01-21

Family

ID=9273133

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83400756A Expired EP0092480B1 (fr) 1982-04-19 1983-04-18 Servo-moteur hydraulique

Country Status (10)

Country Link
US (1) US4642986A (da)
EP (1) EP0092480B1 (da)
JP (1) JPS59500575A (da)
AT (1) ATE25132T1 (da)
AU (1) AU559849B2 (da)
DE (1) DE3369368D1 (da)
DK (1) DK156310C (da)
FI (1) FI80332C (da)
FR (1) FR2525292B1 (da)
WO (1) WO1983003643A1 (da)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2572201B1 (fr) * 1984-10-19 1988-01-29 Penn Ernest Commande a distance electrique
DE3637404A1 (de) * 1986-11-03 1987-11-26 Bornemann & Haller Kg Stellantrieb
US5161957A (en) * 1987-05-21 1992-11-10 Vertran Manufacturing Company Hydraulic door actuator
US5107677A (en) * 1987-05-21 1992-04-28 Vertran Manufacturing Company Hydraulic door actuator
US4910961A (en) * 1987-05-21 1990-03-27 Vertran Manufacturing Company Hydraulic door opening or closing device
JPH0346002U (da) * 1989-09-13 1991-04-26
FI100677B (fi) * 1996-09-13 1998-01-30 Multilift Oy Menetelmä hydraulisesti käytetyn koneen liikenopeuden ohjaamiseksi, hy draulisesti käytetyn koneen käyttöjärjestelmä ja ohjauslaitteisto
DE19719080C1 (de) * 1997-04-30 1998-09-10 Mannesmann Ag Elektrohydraulisches Betätigungsgerät für Bremsen für Industrieanlagen
US20060168955A1 (en) * 2005-02-03 2006-08-03 Schlumberger Technology Corporation Apparatus for hydraulically energizing down hole mechanical systems
US20060276786A1 (en) * 2005-05-25 2006-12-07 Brinker Mark R Apparatus for accurately positioning fractured bone fragments toward facilitating use of an external ring fixator system
US8061261B2 (en) * 2007-02-28 2011-11-22 Raytheon Company Antagonistic fluid control system for active and passive actuator operation
US7954252B2 (en) * 2008-06-06 2011-06-07 Schlumberger Technology Corporation Methods and apparatus to determine and use wellbore diameters
KR20140010046A (ko) * 2011-02-23 2014-01-23 섀플러 테크놀로지스 아게 운트 코. 카게 클러치의 작동을 위한 유압 장치
GB2530666A (en) * 2013-03-14 2016-03-30 Schlumberger Holdings Tool for measuring wellbore geometry
DE102015119108A1 (de) * 2015-11-06 2017-05-11 Pleiger Maschinenbau Gmbh & Co. Kg Verfahren und Vorrichtung zum Ansteuern einer hydraulisch betätigten Antriebseinheit einer Armatur

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2948118A (en) * 1955-02-28 1960-08-09 Honeywell Regulator Co Electromagnetic pump actuated device
FR2082346A5 (da) * 1970-03-11 1971-12-10 Snecma
SE340956B (da) * 1970-04-15 1971-12-06 Kaelle Regulator Ab
CH563532A5 (da) * 1973-03-14 1975-06-30 Buehler Ag Geb
DE2500096C3 (de) * 1975-01-03 1984-08-02 Sauer Getriebe KG, 2350 Neumünster Hydraulische Schaltungseinrichtung zur Druckmittelwegesteuerung mit Konstantregelung des Druckmittelstroms für einen doppeltwirkenden Hydromotor
US4416187A (en) * 1981-02-10 1983-11-22 Nystroem Per H G On-off valve fluid governed servosystem
US4437385A (en) * 1982-04-01 1984-03-20 Deere & Company Electrohydraulic valve system

Also Published As

Publication number Publication date
DK156310C (da) 1990-02-26
EP0092480A1 (fr) 1983-10-26
FI80332C (fi) 1990-05-10
FR2525292B1 (fr) 1986-12-19
DK156310B (da) 1989-07-31
JPH0357324B2 (da) 1991-08-30
AU1470383A (en) 1983-11-04
FI834670A0 (fi) 1983-12-19
WO1983003643A1 (en) 1983-10-27
AU559849B2 (en) 1987-03-19
FR2525292A1 (fr) 1983-10-21
FI80332B (fi) 1990-01-31
DK584783A (da) 1983-12-19
JPS59500575A (ja) 1984-04-05
ATE25132T1 (de) 1987-02-15
FI834670L (fi) 1983-12-19
DK584783D0 (da) 1983-12-19
DE3369368D1 (en) 1987-02-26
US4642986A (en) 1987-02-17

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