FR2286299A1 - HYDRAULIC CIRCUIT WITH PRESSURE AND FLOW COMPENSATION SENSITIVE TO LOAD - Google Patents

HYDRAULIC CIRCUIT WITH PRESSURE AND FLOW COMPENSATION SENSITIVE TO LOAD

Info

Publication number
FR2286299A1
FR2286299A1 FR7529366A FR7529366A FR2286299A1 FR 2286299 A1 FR2286299 A1 FR 2286299A1 FR 7529366 A FR7529366 A FR 7529366A FR 7529366 A FR7529366 A FR 7529366A FR 2286299 A1 FR2286299 A1 FR 2286299A1
Authority
FR
France
Prior art keywords
load
pressure
hydraulic circuit
flow compensation
compensation sensitive
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.)
Granted
Application number
FR7529366A
Other languages
French (fr)
Other versions
FR2286299B1 (en
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.)
SPX Corp
Original Assignee
General Signal Corp
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 General Signal Corp filed Critical General Signal Corp
Publication of FR2286299A1 publication Critical patent/FR2286299A1/en
Application granted granted Critical
Publication of FR2286299B1 publication Critical patent/FR2286299B1/fr
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/46—Automatic regulation in accordance with output requirements
    • 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
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/161—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
    • F15B11/162—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load for giving priority to particular servomotors or users
    • 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
    • F15B13/022—Flow-dividers; Priority 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
    • F15B2211/20—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
    • F15B2211/255—Flow 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
    • F15B2211/3053—In combination with a pressure compensating valve
    • F15B2211/30535—In combination with a pressure compensating valve the pressure compensating valve is arranged between pressure source and 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
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40523—Flow control characterised by the type of flow control means or valve with flow dividers
    • F15B2211/4053—Flow control characterised by the type of flow control means or valve with flow dividers using 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
    • F15B2211/45—Control of bleed-off flow, e.g. control of bypass flow to the 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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • F15B2211/7142—Multiple output members, e.g. multiple hydraulic motors or cylinders the output members being arranged in multiple groups
    • 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
    • F15B2211/78—Control of multiple output members
    • F15B2211/781—Control of multiple output members one or more output members having priority

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fluid-Pressure Circuits (AREA)
FR7529366A 1974-09-25 1975-09-25 HYDRAULIC CIRCUIT WITH PRESSURE AND FLOW COMPENSATION SENSITIVE TO LOAD Granted FR2286299A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US508977A US3908375A (en) 1974-09-25 1974-09-25 Hydraulic load sensitive pressure and flow compensating system

Publications (2)

Publication Number Publication Date
FR2286299A1 true FR2286299A1 (en) 1976-04-23
FR2286299B1 FR2286299B1 (en) 1979-06-29

Family

ID=24024837

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7529366A Granted FR2286299A1 (en) 1974-09-25 1975-09-25 HYDRAULIC CIRCUIT WITH PRESSURE AND FLOW COMPENSATION SENSITIVE TO LOAD

Country Status (8)

Country Link
US (1) US3908375A (en)
JP (1) JPS6110686B2 (en)
CA (1) CA1028922A (en)
DE (1) DE2542809A1 (en)
FR (1) FR2286299A1 (en)
GB (1) GB1485887A (en)
IT (1) IT1047558B (en)
SE (1) SE414526B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2339080A1 (en) * 1976-01-23 1977-08-19 Caterpillar Tractor Co FLUID SYSTEM WITH CONTROLLED PRIORITY FOR TRACKED VEHICLES

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4011721A (en) * 1976-04-14 1977-03-15 Eaton Corporation Fluid control system utilizing pressure drop valve
US4074528A (en) * 1976-08-02 1978-02-21 J. I. Case Company Hydraulic control system with priority flow control
US4116587A (en) * 1977-10-12 1978-09-26 Caterpillar Tractor Co. Load plus differential pressure compensator pump control assembly
US4199942A (en) * 1978-09-28 1980-04-29 Eaton Corporation Load sensing control for hydraulic system
US4479349A (en) * 1981-11-19 1984-10-30 General Signal Corporation Hydraulic control system
EP0301096B1 (en) * 1987-01-30 1994-03-02 Kabushiki Kaisha Komatsu Seisakusho Operation controller
ATE247234T1 (en) * 1999-07-10 2003-08-15 Bosch Rexroth Ag DIRECTIONAL VALVE DISC, ESPECIALLY FOR A MOBILE WORK DEVICE
US7036625B2 (en) * 2002-11-08 2006-05-02 Nmhg Oregon, Inc. Integrated hydraulic control system
CA2725851C (en) * 2010-12-17 2014-10-21 Ace, Accent Controles Electroniques Inc. Load sensing hydraulic system
EP2891806A1 (en) * 2014-01-03 2015-07-08 Danfoss Power Solutions Aps A hydraulic valve arrangement
JP6338428B2 (en) * 2014-04-11 2018-06-06 Ｋｙｂ株式会社 Valve structure
DE102014208019A1 (en) * 2014-04-29 2015-10-29 Robert Bosch Gmbh Hydraulic control arrangement for a plurality of actuators
JP6043409B1 (en) * 2015-07-10 2016-12-14 Ｋｙｂ株式会社 Rod member and valve device
ITUB20153574A1 (en) * 2015-09-11 2017-03-11 Studio Tecnico 6M Srl LOAD SENSING CONTROL DEVICE FOR PRIORITY VALVES

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2799995A (en) * 1954-04-13 1957-07-23 Vickers Inc Power transmission
US2892311A (en) * 1958-01-08 1959-06-30 Deere & Co Hydraulic apparatus
US3465519A (en) * 1967-08-18 1969-09-09 Webster Electric Co Inc Hydraulic flow controlling apparatus
US3602104A (en) * 1969-07-08 1971-08-31 Eaton Yale & Towne Pressure-compensated flow control
US3878679A (en) * 1973-08-30 1975-04-22 Gen Signal Corp Compensated multi-function hydraulic system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NEANT *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2339080A1 (en) * 1976-01-23 1977-08-19 Caterpillar Tractor Co FLUID SYSTEM WITH CONTROLLED PRIORITY FOR TRACKED VEHICLES

Also Published As

Publication number Publication date
GB1485887A (en) 1977-09-14
JPS5157380A (en) 1976-05-19
CA1028922A (en) 1978-04-04
US3908375A (en) 1975-09-30
SE7510659L (en) 1976-03-26
DE2542809A1 (en) 1976-04-08
SE414526B (en) 1980-08-04
FR2286299B1 (en) 1979-06-29
JPS6110686B2 (en) 1986-03-31
IT1047558B (en) 1980-10-20

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Legal Events

Date Code Title Description
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