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ES418624A1 - Electro-hydraulic proportional servo actuator - Google Patents

Electro-hydraulic proportional servo actuator

Info

Publication number
ES418624A1
ES418624A1 ES418624A ES418624A ES418624A1 ES 418624 A1 ES418624 A1 ES 418624A1 ES 418624 A ES418624 A ES 418624A ES 418624 A ES418624 A ES 418624A ES 418624 A1 ES418624 A1 ES 418624A1
Authority
ES
Spain
Prior art keywords
piston
sleeve
chamber
actuator
reel
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
ES418624A
Other languages
Spanish (es)
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.)
Enerpac Tool Group Corp
Original Assignee
Applied Power Inc
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 Applied Power Inc filed Critical Applied Power Inc
Publication of ES418624A1 publication Critical patent/ES418624A1/en
Expired 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
    • 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
    • F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
    • F15B13/043—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with electrically-controlled pilot valves
    • F15B13/0436—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with electrically-controlled pilot valves the pilot valves being of the steerable jet 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
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Servomotors (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

"Improvements in electrohydraulic servo actuators, characterized by comprising: a piston mounted on an inner wall or cylinder for axial sliding movement in opposite directions from a position centered on said actuator and collaborating with said cylinder to define two separate or independent chambers, the part of said piston that is inside one of the chambers having a smaller fluid pressure area than the part that, of said piston, is inside the other chamber, devices for supplying a fluid, continuously, to one of said chambers, servo valve mechanism in said actuator to regulate the passage of fluid to and from said other chamber, said servo valve mechanisms comprising a hollow sleeve mounted on said cylinder in the actuator for axial sliding movement in opposite directions from a centered position and having measurement orifice means therein, Said servo valve mechanisms further comprising a reel mounted on said sleeve for axial sliding movement in opposite directions from a centered position and said mechanisms having a metering hole therein, both measuring orifice mechanisms collaborate when said sleeve and reel are centered to regulate the fluid pressure in said other chamber and thus keeping said piston fixed or static, said reel being able to move in relation to said sleeve to cause said measurement holes to define an opening that effects the change in fluid pressure in said other chamber and, with this, effect movement of said piston to the desired position, and feedback mechanisms connected between the piston and said sleeve and responsive to movement of the piston to effect movement of said sleeve relative to said reel or coil to cause said orifice means to regulate fluid pressure in said other chamber for the purpose of maintaining said piston in the desired position, said feedback means comprising: A cam surface on said piston, first cam follower means slidably mounted on an inner wall of said actuator, and engageable with said cam surface on said piston, said first cam follower means having a cam surface about them, and second cam follower means on said engageable or engageable sleeve with said cam surface on said cam follower means. (Machine-translation by Google Translate, not legally binding)
ES418624A 1972-09-11 1973-09-10 Electro-hydraulic proportional servo actuator Expired ES418624A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US28812672A 1972-09-11 1972-09-11
US36882273 US3875849A (en) 1972-09-11 1973-06-11 Electro-hydraulic proportional servo actuator

Publications (1)

Publication Number Publication Date
ES418624A1 true ES418624A1 (en) 1976-06-01

Family

ID=26964852

Family Applications (1)

Application Number Title Priority Date Filing Date
ES418624A Expired ES418624A1 (en) 1972-09-11 1973-09-10 Electro-hydraulic proportional servo actuator

Country Status (9)

Country Link
US (1) US3875849A (en)
JP (1) JPS5232434B2 (en)
CA (1) CA972658A (en)
DE (1) DE2345768C2 (en)
ES (1) ES418624A1 (en)
FR (1) FR2199069B1 (en)
GB (1) GB1400381A (en)
IT (1) IT994209B (en)
NL (1) NL7312327A (en)

Families Citing this family (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5127688A (en) * 1974-08-30 1976-03-08 Nippon Air Brake Co Hojishona
US4011891A (en) * 1975-08-06 1977-03-15 Applied Power Inc. Proportional flow control valve
DE2609434C2 (en) * 1976-03-06 1985-03-07 Robert Bosch Gmbh, 7000 Stuttgart Device for controlling a hydraulic motor
JPS52125986A (en) * 1976-03-09 1977-10-22 Toshiba Mach Co Ltd Electromagnetic proportional control valve
US4145956A (en) * 1977-04-25 1979-03-27 The United States Of America As Represented By The Secretary Of The Air Force Pilot operated stepping valve
US4212323A (en) * 1977-08-18 1980-07-15 Tomco, Inc. Power assist proportional remote controller
CH624187A5 (en) * 1977-09-29 1981-07-15 Bbc Brown Boveri & Cie
US4375942A (en) * 1981-04-21 1983-03-08 Dynes/Rivett Inc. Tilting cam, rotating barrel pump
DE3213958A1 (en) * 1981-08-21 1983-03-03 Robert Bosch Gmbh, 7000 Stuttgart ELECTROHYDRAULIC ADJUSTMENT FOR A HYDROSTATIC MACHINE
US4456434A (en) * 1982-03-01 1984-06-26 Vickers, Incorporated Power transmission
US4600364A (en) * 1983-06-20 1986-07-15 Kabushiki Kaisha Komatsu Seisakusho Fluid operated pump displacement control system
US4569273A (en) * 1983-07-18 1986-02-11 Dynex/Rivett Inc. Three-way proportional valve
US4637781A (en) * 1984-03-30 1987-01-20 Kabushiki Kaisha Komatsu Seisakusho Torque regulating system for fluid operated pump displacement control systems
US4585024A (en) * 1984-08-28 1986-04-29 Commercial Shearing, Inc. Air shift conversion apparatus for manual valves
US4733601A (en) * 1986-09-15 1988-03-29 Roland Neirynck Combined servo control and jack unit
IT1219353B (en) * 1988-05-31 1990-05-11 Fiatgeotech FLUID CONTROL ACTUATOR
DE3821700A1 (en) * 1988-06-28 1990-01-04 Deere & Co CONTROL DEVICE FOR AT LEAST ONE VALVE
DE19536553A1 (en) * 1995-09-30 1997-04-03 Eckehart Schulze Electro-hydraulic control valve arrangement
US5848612A (en) * 1997-11-25 1998-12-15 Sargent Controls & Aerospace/Dover Diversified Inc. Servovalve employing a rotatable feedback linkage
US6481463B1 (en) * 1999-05-21 2002-11-19 Parker-Hannifin Corporation Control valve with mechanical feedback and method for controlling fluid flow
US6637461B2 (en) * 2002-03-08 2003-10-28 Husco International, Inc. Electrically operated hydraulic actuator with force feedback position sensing
EP1872040B1 (en) * 2005-04-07 2013-03-27 Chubb International Holdings Limited Self-regulating valve for controlling the gas flow in high pressure systems
US8783644B2 (en) 2005-04-07 2014-07-22 Chubb International Holdings Limited Pneumatic flow control valve for fire suppression over pressure prevention
US8640783B2 (en) 2011-06-14 2014-02-04 Tlx Technologies, Llc Solenoid interlock for booster actuator
DE102014205041A1 (en) * 2014-03-19 2015-09-24 Robert Bosch Gmbh Pressure reducing valve
CH710237A1 (en) * 2014-10-15 2016-04-15 Liebherr Machines Bulle Sa Self-regulating servovalve.
JP2016156405A (en) * 2015-02-23 2016-09-01 アネスト岩田株式会社 Pilot valve
US9897228B2 (en) * 2015-11-06 2018-02-20 Caterpillar Inc. Valve having opposing right-angle actuators
US9803661B2 (en) * 2015-11-06 2017-10-31 Caterpillar Inc. Valve having right-angle proportional and directional pilot actuators
US9915368B2 (en) * 2015-11-06 2018-03-13 Caterpillar Inc. Electrohydraulic valve having dual-action right-angle pilot actuator
EP3176443B1 (en) * 2015-12-01 2020-05-06 Claverham Limited Hydraulic valve
WO2017104037A1 (en) * 2015-12-17 2017-06-22 三菱重工コンプレッサ株式会社 Emergency shut-off device
CN107504213B (en) * 2017-09-30 2019-05-31 中国第一汽车股份有限公司 A kind of the proportional overflow solenoid valve and its working method of sliding valve structure
CN110332168B (en) * 2019-08-05 2024-03-22 安徽理工大学 Proportional flow control and high-speed switch dual-purpose valve based on two-degree-of-freedom motor
JP7492816B2 (en) * 2019-09-04 2024-05-30 ナブテスコ株式会社 Pressure regulating valves and construction machinery
CN115324970B (en) * 2022-10-13 2022-12-20 保定北奥石油物探特种车辆制造有限公司 External control method and system for zero characteristic of alternating electrohydraulic servo system

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1585529A (en) * 1922-02-01 1926-05-18 Boving Jens Orten Hydraulic governor for engines, turbines, and the like
US2018977A (en) * 1933-12-23 1935-10-29 Baldwin Southwark Corp Governor
FR886790A (en) * 1941-10-28 1943-10-25 Bmw Flugmotorenbau Gmbh Remote control of aircraft engines by combined hydraulic and electrical devices
US2373621A (en) * 1943-12-13 1945-04-10 Gen Electric Prime mover governing mechanism
FR1107141A (en) * 1954-05-19 1955-12-28 Hispano Suiza Sa Improvements to fluid pressure servo-controls intermittently slaved to a detector device
US2945449A (en) * 1954-06-03 1960-07-19 Bendix Aviat Corp Hydraulic control pump
US2941601A (en) * 1954-12-21 1960-06-21 United Aircraft Corp Fuel control
US2969808A (en) * 1958-05-22 1961-01-31 Cincinnati Milling Machine Co Two-stage valve
US3044451A (en) * 1958-09-24 1962-07-17 Turner Mfg Co Ltd Hydraulic ram and selector mechanism
GB1019173A (en) * 1963-11-13 1966-02-02 Audco Ltd Improvements in and relating to the remote control of fluid valves
US3739813A (en) * 1970-08-13 1973-06-19 Marotta Scientific Controls Power and speed control for double-acting cylinder-and-piston motor
CH524074A (en) * 1970-11-09 1972-06-15 Applied Power Ind Inc Hydraulic booster

Also Published As

Publication number Publication date
FR2199069B1 (en) 1979-01-05
FR2199069A1 (en) 1974-04-05
GB1400381A (en) 1975-07-16
JPS4964784A (en) 1974-06-22
NL7312327A (en) 1974-03-13
DE2345768A1 (en) 1974-03-21
JPS5232434B2 (en) 1977-08-22
US3875849A (en) 1975-04-08
IT994209B (en) 1975-10-20
CA972658A (en) 1975-08-12
DE2345768C2 (en) 1984-06-07

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