JPS4861852A - - Google Patents

Info

Publication number
JPS4861852A
JPS4861852A JP47114221A JP11422172A JPS4861852A JP S4861852 A JPS4861852 A JP S4861852A JP 47114221 A JP47114221 A JP 47114221A JP 11422172 A JP11422172 A JP 11422172A JP S4861852 A JPS4861852 A JP S4861852A
Authority
JP
Japan
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
JP47114221A
Other languages
Japanese (ja)
Other versions
JPS5710301B2 (cg-RX-API-DMAC7.html
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 filed Critical
Publication of JPS4861852A publication Critical patent/JPS4861852A/ja
Publication of JPS5710301B2 publication Critical patent/JPS5710301B2/ja
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/08—Regulating by delivery 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
    • F15B11/00—Servomotor systems without provision for follow-up action ; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or the actuating force of an output member
    • F15B11/04—Systems essentially incorporating special features for controlling the speed or the actuating force of an output member for controlling the speed
    • F15B11/05—Systems essentially incorporating special features for controlling the speed or the actuating force of an output member for controlling the speed specially adapted to maintain constant speed, e.g. pressure-compensated, load-responsive
    • 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
    • F15B2211/20546—Type of pump variable capacity
    • F15B2211/20553—Type of pump variable capacity with pilot circuit, e.g. for controlling a swash plate
    • 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
    • F15B2211/25—Pressure control functions
    • F15B2211/253—Pressure margin control, e.g. pump pressure in relation to load 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
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/26—Power control functions
    • 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
    • F15B2211/30525—Directional control valves, e.g. 4/3-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
    • F15B2211/30—Directional control
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3105—Neutral or centre positions
    • F15B2211/3111—Neutral or centre positions the pump port being closed in the centre position, e.g. so-called closed centre
    • 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
    • F15B2211/35—Directional control combined with flow control
    • F15B2211/351—Flow control by regulating means in feed line, i.e. meter-in 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
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or 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
    • F15B2211/40—Flow control
    • F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
    • F15B2211/41563—Flow control characterised by the connections of the flow control means in the circuit being connected to a pressure source and a return line
    • 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
    • F15B2211/45—Control of bleed-off flow, e.g. control of bypass flow to the return line

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Reciprocating Pumps (AREA)
  • Control Of Fluid Gearings (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
JP11422172A 1971-11-15 1972-11-14 Expired JPS5710301B2 (cg-RX-API-DMAC7.html)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US19874771A 1971-11-15 1971-11-15

Publications (2)

Publication Number Publication Date
JPS4861852A true JPS4861852A (cg-RX-API-DMAC7.html) 1973-08-29
JPS5710301B2 JPS5710301B2 (cg-RX-API-DMAC7.html) 1982-02-25

Family

ID=22734647

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11422172A Expired JPS5710301B2 (cg-RX-API-DMAC7.html) 1971-11-15 1972-11-14

Country Status (8)

Country Link
US (1) US3726093A (cg-RX-API-DMAC7.html)
JP (1) JPS5710301B2 (cg-RX-API-DMAC7.html)
AU (1) AU466456B2 (cg-RX-API-DMAC7.html)
CA (1) CA956543A (cg-RX-API-DMAC7.html)
DE (1) DE2255708A1 (cg-RX-API-DMAC7.html)
FR (1) FR2160484B1 (cg-RX-API-DMAC7.html)
GB (1) GB1401839A (cg-RX-API-DMAC7.html)
SE (1) SE380586B (cg-RX-API-DMAC7.html)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3809501A (en) * 1973-01-08 1974-05-07 Gen Signal Corp Hydraulic load sensitive system
US3979907A (en) * 1973-09-10 1976-09-14 Parker-Hannifin Corporation Priority control valve
US3902320A (en) * 1974-09-05 1975-09-02 Parker Hannifin Corp Mobile power steering system
US4034564A (en) * 1976-01-23 1977-07-12 Caterpillar Tractor Co. Piston pump assembly having load responsive controls
US4142841A (en) * 1977-08-31 1979-03-06 Parker-Hannifin Corporation Variable displacement pump control
US4162874A (en) * 1977-11-07 1979-07-31 Parker-Hannifin Corporation Horsepower summation control for variable displacement
GB2043776B (en) 1979-03-06 1983-05-05 Nissan Motor Extra air device for internal combustion engine
DE3708492A1 (de) * 1987-03-16 1988-09-29 Rexroth Mannesmann Gmbh Regelvorrichtung fuer eine hydraulische anlage
DE3943357A1 (de) * 1989-12-29 1991-07-04 Rexroth Mannesmann Gmbh Schaltungsanordnung mit einer ansteuerelektronik fuer die magnetspulen von stellgliedern eines hydraulichen systems
US6164924A (en) * 1998-09-01 2000-12-26 Oil-Rite Corporation Piston and drive assembly for use in a pump
NZ570978A (en) * 2006-02-01 2011-07-29 Petro Hydraulic Lift System L L C Hydraulic oil well pumping apparatus
ZA200807498B (en) * 2006-02-01 2009-12-30 Petro Hydraulic Lift System Llc Hydraulic oil well pumping apparatus
US20090194291A1 (en) * 2008-01-28 2009-08-06 Petro Hydraulic Lift System, L.L.C. Hydraulic oil well pumping apparatus
US8647075B2 (en) * 2009-03-18 2014-02-11 Eaton Corporation Control valve for a variable displacement pump
DE102009034616A1 (de) * 2009-07-27 2011-02-03 Robert Bosch Gmbh Wegeventilanordnung
US9617837B2 (en) 2013-01-14 2017-04-11 Lufkin Industries, Llc Hydraulic oil well pumping apparatus
EP2891806A1 (en) * 2014-01-03 2015-07-08 Danfoss Power Solutions Aps A hydraulic valve arrangement
JP6338428B2 (ja) * 2014-04-11 2018-06-06 Ｋｙｂ株式会社 バルブ構造

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4527170Y1 (cg-RX-API-DMAC7.html) * 1965-08-06 1970-10-21

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US25702A (en) * 1859-10-04 Nathan
US2579134A (en) * 1948-03-31 1951-12-18 Deere Mfg Co Valve control means for fluid pressure systems
US2941365A (en) * 1957-07-23 1960-06-21 Sundstrand Corp Hydraulic transmission
US3465519A (en) * 1967-08-18 1969-09-09 Webster Electric Co Inc Hydraulic flow controlling apparatus
US3429123A (en) * 1967-08-29 1969-02-25 Leblond Mach Tool Co R K Speed control system
US3501673A (en) * 1968-04-29 1970-03-17 Stromberg Datagraphix Inc Variable magnification cathode ray tube
US3486334A (en) * 1968-05-16 1969-12-30 Cessna Aircraft Co Hydraulic power transmission control
US3592216A (en) * 1968-09-06 1971-07-13 Borg Warner Flow control valve
US3662783A (en) * 1970-02-02 1972-05-16 Parker Hannifin Corp Spool valve assembly

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4527170Y1 (cg-RX-API-DMAC7.html) * 1965-08-06 1970-10-21

Also Published As

Publication number Publication date
FR2160484B1 (cg-RX-API-DMAC7.html) 1977-08-26
GB1401839A (en) 1975-07-30
AU466456B2 (en) 1975-10-30
SE380586B (sv) 1975-11-10
US3726093A (en) 1973-04-10
DE2255708A1 (de) 1973-05-24
JPS5710301B2 (cg-RX-API-DMAC7.html) 1982-02-25
CA956543A (en) 1974-10-22
AU4853972A (en) 1974-05-09
FR2160484A1 (cg-RX-API-DMAC7.html) 1973-06-29

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