EP1172565B1 - Circuit hydraulique pour machine de travail - Google Patents

Circuit hydraulique pour machine de travail Download PDF

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Publication number
EP1172565B1
EP1172565B1 EP20010302794 EP01302794A EP1172565B1 EP 1172565 B1 EP1172565 B1 EP 1172565B1 EP 20010302794 EP20010302794 EP 20010302794 EP 01302794 A EP01302794 A EP 01302794A EP 1172565 B1 EP1172565 B1 EP 1172565B1
Authority
EP
European Patent Office
Prior art keywords
circuit
pressure
control valve
flow dividing
hydraulic
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 - Lifetime
Application number
EP20010302794
Other languages
German (de)
English (en)
Other versions
EP1172565A2 (fr
EP1172565A3 (fr
Inventor
Yoshiyuki c/o Shin Caterpillar Mit. Ltd. Shimada
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 Japan Ltd
Caterpillar Mitsubishi Ltd
Original Assignee
Caterpillar Mitsubishi Ltd
Shin Caterpillar Mitsubishi 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 Caterpillar Mitsubishi Ltd, Shin Caterpillar Mitsubishi Ltd filed Critical Caterpillar Mitsubishi Ltd
Publication of EP1172565A2 publication Critical patent/EP1172565A2/fr
Publication of EP1172565A3 publication Critical patent/EP1172565A3/fr
Application granted granted Critical
Publication of EP1172565B1 publication Critical patent/EP1172565B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F15B11/16—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
    • 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
    • E02F9/2225—Control of flow rate; Load sensing arrangements using pressure-compensating valves
    • E02F9/2228—Control of flow rate; Load sensing arrangements using pressure-compensating valves including an electronic controller
    • 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
    • E02F9/2292—Systems with two or more 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
    • F15B2211/20—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
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable 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
    • F15B2211/405—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
    • F15B2211/42—Flow control characterised by the type of actuation
    • F15B2211/428—Flow control characterised by the type of actuation actuated by fluid 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
    • F15B2211/40—Flow control
    • F15B2211/455—Control of flow in the 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
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50563—Pressure control characterised by the type of pressure control means the pressure control means controlling a differential 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
    • F15B2211/50—Pressure control
    • F15B2211/52—Pressure control characterised by the type of actuation
    • F15B2211/528—Pressure control characterised by the type of actuation actuated by fluid 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
    • F15B2211/50—Pressure control
    • F15B2211/57—Control of a differential 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/6306—Electronic controllers using input signals representing a pressure
    • F15B2211/6313—Electronic controllers using input signals representing a pressure the pressure being a 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
    • F15B2211/60—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
    • F15B2211/665—Methods of control using electronic components
    • F15B2211/6654—Flow rate 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
    • F15B2211/70—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

Claims (2)

  1. Circuit hydraulique d'une machine de construction, ledit circuit hydraulique comprenant :
    des circuits d'actionneurs établis (5, 6) pour entraíner des actionneurs établis de la machine de construction en commandant un fluide hydraulique délivré par des pompes hydrauliques (2, 3) ;
    un circuit d'accessoire indépendant (7) adapté pour entraíner un accessoire de la machine de construction indépendamment des circuits d'actionneurs établis (5, 6) en commandant une partie du fluide hydraulique délivré par des pompes hydrauliques (2, 3) aux circuits d'actionneurs établis ;
    une vanne de commande de division d'écoulement (10) adaptée pour provoquer la séparation d'une partie du fluide hydraulique délivré par les pompes hydrauliques (2, 3) aux circuits d'actionneurs établis (5, 6) et sa distribution au circuit d'accessoire indépendant (7), le débit du fluide hydraulique soumis au processus de séparation étant commandé au moyen d'étrangleurs variables (39, 40) de la vanne de commande de division d'écoulement (10) en fonction de la course de la vanne de commande de division d'écoulement (10) ;
    des vannes de compensation de pression (11, 12) adaptées pour effectuer une commande de manière à maintenir une pression différentielle constante entre l'entrée et la sortie des étrangleurs variables de la vanne de commande de division d'écoulement (10),
    caractérisé en ce qu'il comprend en outre :
    un capteur de pression (51) pour détecter une pression de circuit dans le circuit d'accessoire indépendant (7) ;
    une électrovanne à commande proportionnelle (57) pour commander la course de la vanne de commande de division d'écoulement (10) au moyen d'une pression pilote ; et
    un contrôleur (53) adapté pour commander l'électrovanne à commande proportionnelle de manière à ce que, lorsque la pression de circuit dans le circuit d'accessoire indépendant (7) détectée par le capteur de pression (51) n'est pas excessivement élevée, le contrôleur (53) commande les étrangleurs variables (39, 40) de la vanne de commande de division d'écoulement en commandant l'électrovanne à commande proportionnelle (57) conformément à des signaux de commande d'accessoire et que, lorsque la pression de circuit dans le circuit d'accessoire indépendant (7) a augmenté à un niveau excessivement élevé, le contrôleur (53) commande l'électrovanne à commande proportionnelle (57) indépendamment des signaux de commande d'accessoire de manière à réduire les surfaces d'ouverture des étrangleurs variables (39, 40) de la vanne de commande de division d'écoulement (10).
  2. Circuit hydraulique selon la revendication 1, dans lequel l'état dans lequel la pression de circuit dans le circuit d'accessoire indépendant (7) est excessivement élevée est défini comme l'état dans lequel la pression de circuit dans le circuit d'accessoire indépendant est au voisinage de la pression de décharge.
EP20010302794 2000-07-10 2001-03-26 Circuit hydraulique pour machine de travail Expired - Lifetime EP1172565B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000208724 2000-07-10
JP2000208724A JP3511500B2 (ja) 2000-07-10 2000-07-10 建設機械の油圧回路

Publications (3)

Publication Number Publication Date
EP1172565A2 EP1172565A2 (fr) 2002-01-16
EP1172565A3 EP1172565A3 (fr) 2003-11-12
EP1172565B1 true EP1172565B1 (fr) 2005-01-12

Family

ID=18705257

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20010302794 Expired - Lifetime EP1172565B1 (fr) 2000-07-10 2001-03-26 Circuit hydraulique pour machine de travail

Country Status (3)

Country Link
EP (1) EP1172565B1 (fr)
JP (1) JP3511500B2 (fr)
DE (1) DE60108309T2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2807118B1 (fr) * 2000-03-28 2002-07-05 Mannesmann Rexroth Sa Circuit hydraulique pour l'actionnement de recepteurs hydrauliques multiples
CN103527539A (zh) * 2013-09-16 2014-01-22 洛阳中重自动化工程有限责任公司 一种多油缸同步同压液压控制回路
US9371843B2 (en) 2014-01-14 2016-06-21 Caterpillar Inc. Failsafe pilot supply selector valve
CN108317114B (zh) * 2018-03-28 2023-11-03 江苏徐工工程机械研究院有限公司 一种抛沙灭火车用进料装置控制系统

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61211505A (ja) * 1984-11-01 1986-09-19 Toshiba Mach Co Ltd 自走式油圧機械の油圧制御回路
JPH091087A (ja) * 1995-06-12 1997-01-07 Kobelco Kenki Eng Kk 作業車両の散水装置用回路
JP3365964B2 (ja) 1998-08-28 2003-01-14 新キャタピラー三菱株式会社 建設機械の油圧回路

Also Published As

Publication number Publication date
DE60108309T2 (de) 2006-03-02
JP3511500B2 (ja) 2004-03-29
EP1172565A2 (fr) 2002-01-16
DE60108309D1 (de) 2005-02-17
EP1172565A3 (fr) 2003-11-12
JP2002021809A (ja) 2002-01-23

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