AT334217B - HYDRAULIC CONTROL SYSTEM - Google Patents

HYDRAULIC CONTROL SYSTEM

Info

Publication number
AT334217B
AT334217B AT605474A AT605474A AT334217B AT 334217 B AT334217 B AT 334217B AT 605474 A AT605474 A AT 605474A AT 605474 A AT605474 A AT 605474A AT 334217 B AT334217 B AT 334217B
Authority
AT
Austria
Prior art keywords
control system
hydraulic control
hydraulic
control
Prior art date
Application number
AT605474A
Other languages
German (de)
Other versions
ATA605474A (en
Original Assignee
Deere & Co
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 Deere & Co filed Critical Deere & Co
Application granted granted Critical
Publication of AT334217B publication Critical patent/AT334217B/en
Publication of ATA605474A publication Critical patent/ATA605474A/en

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
    • F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
    • F15B11/05—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed specially adapted to maintain constant speed, e.g. pressure-compensated, load-responsive
    • F15B11/055—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed specially adapted to maintain constant speed, e.g. pressure-compensated, load-responsive by adjusting the pump output or bypass
    • 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
    • F15B2211/30—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
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/321—Directional control characterised by the type of actuation mechanically
    • F15B2211/324—Directional control characterised by the type of actuation mechanically manually, e.g. by using a lever or pedal
    • 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
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/321—Directional control characterised by the type of actuation mechanically
    • F15B2211/325—Directional control characterised by the type of actuation mechanically actuated by an output member of the circuit
    • 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
    • F15B2211/635—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements
    • F15B2211/6355—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements having valve means
    • 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
    • F15B2211/7052—Single-acting output members
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S60/00—Power plants
    • Y10S60/911—Fluid motor system incorporating electrical system

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Fluid Gearings (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
AT605474A 1973-07-25 1974-07-23 HYDRAULIC CONTROL SYSTEM AT334217B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00382516A US3826090A (en) 1973-07-25 1973-07-25 Variable pressure hydraulic system

Publications (2)

Publication Number Publication Date
AT334217B true AT334217B (en) 1976-01-10
ATA605474A ATA605474A (en) 1976-04-15

Family

ID=23509303

Family Applications (1)

Application Number Title Priority Date Filing Date
AT605474A AT334217B (en) 1973-07-25 1974-07-23 HYDRAULIC CONTROL SYSTEM

Country Status (11)

Country Link
US (1) US3826090A (en)
AR (1) AR203758A1 (en)
AT (1) AT334217B (en)
AU (1) AU469509B2 (en)
CA (1) CA987201A (en)
DE (1) DE2434840A1 (en)
ES (1) ES428612A1 (en)
FR (1) FR2238852B1 (en)
GB (1) GB1474421A (en)
IT (1) IT1016981B (en)
SE (1) SE412446B (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4006662A (en) * 1972-11-22 1977-02-08 Danfoss A/S Hydraulic Steering apparatus
US3945175A (en) * 1973-10-02 1976-03-23 International Harvester Company Variable speed feed roll drive mechanism for forage harvesters
US3875746A (en) * 1974-04-18 1975-04-08 Amf Inc Electrical control for hydraulic waste compactor
DE2531492C2 (en) * 1975-07-15 1982-09-16 Robert Bosch Gmbh, 7000 Stuttgart Adjustable hydrostatic pump
US3990237A (en) * 1975-12-29 1976-11-09 Deere & Company Deman compensated hydraulic system with pressure amplifier
US3973399A (en) * 1975-12-29 1976-08-10 Deere & Company Demand compensated hydraulic system with pilot line dither
US4004418A (en) * 1975-12-29 1977-01-25 Deere & Company Demand compensated hydraulic system with flow sensitive device
US3995425A (en) * 1976-03-08 1976-12-07 Deere & Company Demand compensated hydraulic system with pilot line pressure-maintaining valve
DE2811585C2 (en) * 1978-03-17 1987-11-12 Mannesmann Rexroth GmbH, 8770 Lohr Hydraulic adjusting device with return device
US4215543A (en) * 1979-04-09 1980-08-05 C. A. Lawton Company Method and apparatus for linear and nonlinear control of a hydraulic press
DE3109045A1 (en) * 1981-03-10 1982-09-16 Alfred Teves Gmbh, 6000 Frankfurt ADJUSTABLE HYDRAULIC PUMP
AU552866B2 (en) * 1981-05-18 1986-06-26 Deere & Company Power-on-demand hydraulic system
AU1928283A (en) * 1982-11-26 1984-05-31 Vickers Incorporated Power transmission
IT1161583B (en) * 1983-02-25 1987-03-18 Same Spa IMPROVEMENTS IN HYDRAULIC POWER SUPPLY CIRCUITS
SE459686B (en) * 1986-10-13 1989-07-24 Akermans Verkstad Ab PROCEDURE AND DEVICE FOR CHANGING THE MAXIMUM EASY ACCESSIBLE HYDRAULAR PRESSURE OF THE PUMP SYSTEM IN AN EXCAVATOR
US4813235A (en) * 1987-06-09 1989-03-21 Deere & Company Hydraulic gain reduction circuit
DE3733677A1 (en) * 1987-10-05 1989-04-13 Rexroth Mannesmann Gmbh LOAD-INDEPENDENT CONTROL DEVICE FOR HYDRAULIC CONSUMERS
DE3910895A1 (en) * 1987-10-05 1990-10-11 Rexroth Mannesmann Gmbh Control arrangement independent of load for hydraulic consumers
JP3115887B2 (en) * 1990-09-28 2000-12-11 株式会社小松製作所 Variable circuit of pump displacement in closed center load sensing system
EP3514394A1 (en) 2010-05-11 2019-07-24 Parker Hannifin Corp. Pressure compensated hydraulic system having differential pressure control
CN104533861B (en) * 2014-12-05 2016-08-24 中国航空工业集团公司金城南京机电液压工程研究中心 A kind of switching valve for static test

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2238060A (en) * 1938-02-08 1941-04-15 Manly Corp Fluid pressure feed and rapid traverse system of transmission of power
US3002462A (en) * 1957-08-13 1961-10-03 Racine Hydraulics & Machinery Fluid translating apparatus
US2892311A (en) * 1958-01-08 1959-06-30 Deere & Co Hydraulic apparatus
US2892312A (en) * 1958-01-27 1959-06-30 Deere & Co Demand compensated hydraulic system

Also Published As

Publication number Publication date
CA987201A (en) 1976-04-13
US3826090A (en) 1974-07-30
FR2238852A1 (en) 1975-02-21
SE7409586L (en) 1975-02-18
FR2238852B1 (en) 1977-06-24
GB1474421A (en) 1977-05-25
ATA605474A (en) 1976-04-15
AU469509B2 (en) 1976-02-12
ES428612A1 (en) 1976-08-16
DE2434840A1 (en) 1975-02-13
AU6293273A (en) 1975-05-29
AR203758A1 (en) 1975-10-15
IT1016981B (en) 1977-06-20
SE412446B (en) 1980-03-03

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee