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GB1132309A - Improvements in or relating to hydraulic actuators - Google Patents

Improvements in or relating to hydraulic actuators

Info

Publication number
GB1132309A
GB1132309A GB33514/67A GB3351467A GB1132309A GB 1132309 A GB1132309 A GB 1132309A GB 33514/67 A GB33514/67 A GB 33514/67A GB 3351467 A GB3351467 A GB 3351467A GB 1132309 A GB1132309 A GB 1132309A
Authority
GB
United Kingdom
Prior art keywords
air
pump
valve
pressure
delivery
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
GB33514/67A
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.)
KAELLE REGULATORER AB
Original Assignee
KAELLE REGULATORER AB
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 KAELLE REGULATORER AB filed Critical KAELLE REGULATORER AB
Publication of GB1132309A publication Critical patent/GB1132309A/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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20538—Type of pump constant capacity
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/20576—Systems with pumps with multiple pumps
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30505—Non-return valves, i.e. check valves
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40507—Flow control characterised by the type of flow control means or valve with constant throttles or orifices
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
    • F15B2211/41509—Flow control characterised by the connections of the flow control means in the circuit being connected to a pressure source and a directional control valve
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/575—Pilot pressure control
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/67—Methods for controlling pilot pressure
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7053—Double-acting output members
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/77—Control of direction of movement of the output member
    • F15B2211/7725—Control of direction of movement of the output member with automatic reciprocation
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/875—Control measures for coping with failures
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/885—Control specific to the type of fluid, e.g. specific to magnetorheological fluid
    • F15B2211/8855—Compressible fluids, e.g. specific to pneumatics

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Reciprocating Pumps (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

1,132,309. Hydraulic actuators: gear pumps. KALLE - REGULATORER A.B. July 20, 1967 [Sept. 9, 1966], No.33514/67. Headings F1F and F1P. An hydraulic actuator circuit includes two continuously driven gear pumps 2, 2' each having a gas, e.g. atmospheric air, inlet 4, 4' and a liquid inlet 3, 3', valve members 33, 33' actuated simultaneously in opposite directions in response to electric pulses so as to close said air inlets 4, 4' alternately, a restricted outlet 5, 5' at the delivery side of each pump, a hydraulic actuator cylinder 26 connected at one end by a first conduit 16 and a check valve 14 to the delivery path 7 of pump 2, and connected at the other end by a second conduit 16' and second check valve 14' to the delivery path 7' of pump 2' a pressure responsive member 17 arranged to open check valve 14 in response to pressure in a branch 20' of the delivery pipe 7' of pump 2' and a member 17' arranged to open check valve 14' in response to pressure in a branch 20 of the delivery pipe 7. In operation and with the inlets of both air ducts 4, 4' open, both pumps 2, 2' deliver air through the restricted outlets 5 and valves 14, 14' remain seated. On increasing a current through one or other solenoids 34, 35 a valve arm 32 is pivoted to close say air conduit 4 whereupon pump 2 draws liquid and delivers it into pipe 7 and also path 5 until the lower end of the latter is blocked by adiaphragm 25 connected to a path 22 to branch 20. Pump delivery pressure then opens valve 14 and displaces actuator piston 27 to the left and liquid exhausted thereby passes through open valve 14' and is vented through an aperature 21'. In the event of piston 27 reaching the end of the cylinder 26 whilst one or other of the air ducts 4, 4' are closed and one or other of pumps 2, 2' are delivering liquid, an air valve 39, 39' is opened therebly admitting atmospheric air into either duct 4, or 4'. A further air valve 43, 43' is opened by a Bourden tube 42 when deflected by an undue pressure rise in conduit 16, 16'. Piston 27 may be adjusted when pumps 2, 2' are idle by application of liquid pressure through either of ducts 29, 29' by moves of a hand pump.
GB33514/67A 1966-09-09 1967-07-20 Improvements in or relating to hydraulic actuators Expired GB1132309A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1216566 1966-09-09

Publications (1)

Publication Number Publication Date
GB1132309A true GB1132309A (en) 1968-10-30

Family

ID=20295266

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33514/67A Expired GB1132309A (en) 1966-09-09 1967-07-20 Improvements in or relating to hydraulic actuators

Country Status (2)

Country Link
US (1) US3425218A (en)
GB (1) GB1132309A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3692052A (en) * 1970-03-27 1972-09-19 Hamish A G Cattanach Pressure controlled variable pump output by-pass system
US7798079B2 (en) * 2008-11-14 2010-09-21 Cnh Canada, Ltd. Pressure supply assembly for an agricultural implement with dense phase product flow
US9163619B2 (en) * 2010-09-17 2015-10-20 Safoco, Inc. Valve actuator control system and method of use
JP6101684B2 (en) * 2011-06-01 2017-03-22 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． Method and system for assisting patients
US10052926B2 (en) * 2014-12-19 2018-08-21 Sistemi Sospensioni S.P.A. Regenerative hydraulic shock-absorber for vehicle suspension

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US366364A (en) * 1887-07-12 Method of manufacturing ornamental glass
US2356597A (en) * 1939-08-25 1944-08-22 Kronenberger Adam Rudder machine for automatic pilots
US2942581A (en) * 1958-03-12 1960-06-28 Fisher Governor Co Hydraulic operator
US3031846A (en) * 1961-04-05 1962-05-01 David E Wiegand Hydraulic servo

Also Published As

Publication number Publication date
US3425218A (en) 1969-02-04

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