EP2339073A1 - Système hydraulique pour machine, machine et procédé d'utilisation - Google Patents

Système hydraulique pour machine, machine et procédé d'utilisation Download PDF

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Publication number
EP2339073A1
EP2339073A1 EP09252887A EP09252887A EP2339073A1 EP 2339073 A1 EP2339073 A1 EP 2339073A1 EP 09252887 A EP09252887 A EP 09252887A EP 09252887 A EP09252887 A EP 09252887A EP 2339073 A1 EP2339073 A1 EP 2339073A1
Authority
EP
European Patent Office
Prior art keywords
pressure
load sense
line
output
input
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.)
Withdrawn
Application number
EP09252887A
Other languages
German (de)
English (en)
Inventor
Mark Heptonstall
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.)
Caterpillar Inc
Original Assignee
Perkins Engines Co Ltd
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 Perkins Engines Co Ltd filed Critical Perkins Engines Co Ltd
Priority to EP09252887A priority Critical patent/EP2339073A1/fr
Publication of EP2339073A1 publication Critical patent/EP2339073A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2221—Control of flow rate; Load sensing arrangements
    • E02F9/2232—Control of flow rate; Load sensing arrangements using one or more variable displacement pumps
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2285—Pilot-operated systems
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2296—Systems with a variable displacement pump
    • 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/605—Load sensing circuits
    • 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
    • F15B2211/65—Methods of control of the load sensing pressure
    • F15B2211/653—Methods of control of the load sensing pressure the load sensing pressure being higher than the load pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)
EP09252887A 2009-12-23 2009-12-23 Système hydraulique pour machine, machine et procédé d'utilisation Withdrawn EP2339073A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09252887A EP2339073A1 (fr) 2009-12-23 2009-12-23 Système hydraulique pour machine, machine et procédé d'utilisation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09252887A EP2339073A1 (fr) 2009-12-23 2009-12-23 Système hydraulique pour machine, machine et procédé d'utilisation

Publications (1)

Publication Number Publication Date
EP2339073A1 true EP2339073A1 (fr) 2011-06-29

Family

ID=41682314

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09252887A Withdrawn EP2339073A1 (fr) 2009-12-23 2009-12-23 Système hydraulique pour machine, machine et procédé d'utilisation

Country Status (1)

Country Link
EP (1) EP2339073A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2818732A1 (fr) * 2013-06-28 2014-12-31 HAWE Hydraulik SE Procédé et commande pour le levage hydraulique d'une charge
US11512449B2 (en) 2020-12-14 2022-11-29 Caterpillar Sarl Hydraulic control system and method for a bucket shake operation in a work machine with a hydraulic pump and unloader valve

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4087968A (en) * 1977-04-28 1978-05-09 Caterpillar Tractor Co. Flow control valve for combining two dissimilar independent systems to a common pressure source
US5067321A (en) 1989-02-23 1991-11-26 Kabushiki Kaisha Kobe Seiko Sho Hydraulic hoisting circuit with electrical control for relief valve adjustment pilot and pilot disable valve
US5481875A (en) * 1991-09-27 1996-01-09 Kabushiki Kaisha Komatsu Seisakusho Apparatus for changing and controlling volume of hydraulic oil in hydraulic excavator
US5939646A (en) 1997-02-26 1999-08-17 Hewlett-Packard Company Sheet media weight detector
DE10134747A1 (de) 2001-07-17 2003-02-13 Liebherr Machines Bulle S A Verfahren und Vorrichtung zur lastabhängigen Steuerung der Fluidversorgung eines Fluidkreises
WO2003068660A1 (fr) * 2002-02-11 2003-08-21 Kalmar Industries Sverige Ab Systeme hydraulique pour vehicule, vehicule comprenant un tel systeme hydraulique et unite supplementaire pour un tel vehicule
EP1715193A2 (fr) * 2005-04-20 2006-10-25 Volvo Construction Equipment Holding Sweden AB Dispositif et méthode de contrôle du débit délivré par une pompe d'engin de travaux public.
WO2009067050A1 (fr) * 2007-11-21 2009-05-28 Volvo Construction Equipment Ab Système de détection de charge, machine d'usinage comprenant le système et procédé pour commander une fonction hydraulique

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4087968A (en) * 1977-04-28 1978-05-09 Caterpillar Tractor Co. Flow control valve for combining two dissimilar independent systems to a common pressure source
US5067321A (en) 1989-02-23 1991-11-26 Kabushiki Kaisha Kobe Seiko Sho Hydraulic hoisting circuit with electrical control for relief valve adjustment pilot and pilot disable valve
US5481875A (en) * 1991-09-27 1996-01-09 Kabushiki Kaisha Komatsu Seisakusho Apparatus for changing and controlling volume of hydraulic oil in hydraulic excavator
US5939646A (en) 1997-02-26 1999-08-17 Hewlett-Packard Company Sheet media weight detector
DE10134747A1 (de) 2001-07-17 2003-02-13 Liebherr Machines Bulle S A Verfahren und Vorrichtung zur lastabhängigen Steuerung der Fluidversorgung eines Fluidkreises
WO2003068660A1 (fr) * 2002-02-11 2003-08-21 Kalmar Industries Sverige Ab Systeme hydraulique pour vehicule, vehicule comprenant un tel systeme hydraulique et unite supplementaire pour un tel vehicule
EP1715193A2 (fr) * 2005-04-20 2006-10-25 Volvo Construction Equipment Holding Sweden AB Dispositif et méthode de contrôle du débit délivré par une pompe d'engin de travaux public.
WO2009067050A1 (fr) * 2007-11-21 2009-05-28 Volvo Construction Equipment Ab Système de détection de charge, machine d'usinage comprenant le système et procédé pour commander une fonction hydraulique

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2818732A1 (fr) * 2013-06-28 2014-12-31 HAWE Hydraulik SE Procédé et commande pour le levage hydraulique d'une charge
US11512449B2 (en) 2020-12-14 2022-11-29 Caterpillar Sarl Hydraulic control system and method for a bucket shake operation in a work machine with a hydraulic pump and unloader valve

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