EP2123593B1 - Compensation de fuite électro-hydraulique - Google Patents

Compensation de fuite électro-hydraulique Download PDF

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Publication number
EP2123593B1
EP2123593B1 EP20090158346 EP09158346A EP2123593B1 EP 2123593 B1 EP2123593 B1 EP 2123593B1 EP 20090158346 EP20090158346 EP 20090158346 EP 09158346 A EP09158346 A EP 09158346A EP 2123593 B1 EP2123593 B1 EP 2123593B1
Authority
EP
European Patent Office
Prior art keywords
pressure
lowering
load
lifting
hydraulic motor
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.)
Active
Application number
EP20090158346
Other languages
German (de)
English (en)
Other versions
EP2123593A1 (fr
Inventor
Thomas Heidrich
Johannes Schürmann
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.)
Manitowoc Crane Group France SAS
Original Assignee
Manitowoc Crane Group France SAS
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Publication date
Application filed by Manitowoc Crane Group France SAS filed Critical Manitowoc Crane Group France SAS
Publication of EP2123593A1 publication Critical patent/EP2123593A1/fr
Application granted granted Critical
Publication of EP2123593B1 publication Critical patent/EP2123593B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
    • B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
    • B66D5/24—Operating devices
    • B66D5/26—Operating devices pneumatic or hydraulic
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/18—Control systems or devices
    • B66C13/22—Control systems or devices for electric drives
    • B66C13/23—Circuits for controlling the lowering of the load
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/28—Other constructional details
    • B66D1/40—Control devices
    • B66D1/42—Control devices non-automatic
    • B66D1/44—Control devices non-automatic pneumatic of hydraulic
    • 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
    • F15B11/003—Systems with load-holding 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
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50545—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using braking valves to maintain a back pressure
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/0318—Processes
    • Y10T137/0324—With control of flow by a condition or characteristic of a fluid
    • Y10T137/0379—By fluid pressure

Definitions

  • the invention relates to an electro-hydraulic leak compensation device for a mobile crane lowering brake system in an open hydraulic circuit and also to a method for electro-hydraulic leak compensation in a mobile crane lowering brake system in an open hydraulic circuit.
  • Both the method and the apparatus can be used in a mobile crane with one or more winches in the open hydraulic circuit, in which the attached load is secured via a lowering brake valve and a mechanical brake against load crash.
  • the pressure in the lifting line is measured by the pressure sensor preferably before closing the mechanical brake before closing the mechanical brake.
  • This measured pressure can also be referred to as actual pressure, as it reflects the current load condition on the crane's hoist.
  • fluid is removed from the lifting line for pressure buildup and pumped into the volume between the lowering brake valve and the hydraulic motor.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Control And Safety Of Cranes (AREA)

Claims (14)

  1. Dispositif de compensation de fuites électro-hydraulique pour un système de frein de descente de grue mobile dans un circuit hydraulique ouvert comportant un moteur hydraulique (5) couplé à une unité de levage (6, 7), une soupape de frein de descente (4) et un frein mécanique (9), avec un capteur de pression (13) qui mesure la pression hydraulique régnant dans le circuit hydraulique du côté charge du moteur hydraulique (5) ou du côté de la conduite de levage (5) avant la fermeture, en particulier juste avant la fermeture, du frein mécanique (9), caractérisé en ce qu'une pompe de la grue mobile délivre du fluide à partir de la conduite de levage (3) dans le volume (12) compris entre le moteur hydraulique (5) et la soupape de frein de descente (4) afin d'augmenter la pression avant l'ouverture du frein mécanique (9).
  2. Dispositif de compensation de fuites selon la revendication 1, caractérisé en ce qu'une unité de commande mémorise la pression mesurée en tant que pression réelle et une pompe de la grue mobile entraîne l'admission de fluide dans un volume (12) compris entre le moteur hydraulique (5) et la soupape de frein de descente (4) avant l'ouverture du frein mécanique (9), afin de compenser la perte de pression survenue dans le volume (12) pendant la durée de fermeture du frein mécanique (9), de préférence de manière entièrement automatique.
  3. Dispositif de compensation de fuites selon la revendication 1, caractérisé en ce que la montée en pression diffère de la pression mesurée en fonction de l'état de charge.
  4. Dispositif de compensation de fuites selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le moteur hydraulique (5) est couplé à un tambour d'unité de levage (7) par l'intermédiaire d'un engrenage (6) et du frein mécanique (9).
  5. Dispositif de compensation de fuites selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la soupape de frein de descente (4) dans le circuit hydraulique est agencée du côté charge du moteur hydraulique (5) ou du côté de la conduite de levage (3).
  6. Dispositif de compensation de fuites selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le capteur de pression (13) dans le circuit hydraulique est agencé du côté charge de la soupape de frein de descente (4) ou du côté de la conduite de levage (3).
  7. Procédé de compensation de fuites électro-hydraulique par un système de frein de descente de grue mobile dans un circuit hydraulique ouvert comportant un moteur hydraulique (5) couplé à une unité de levage (6, 7), une soupape de frein de descente (4) et un frein mécanique (9), comportant les étapes suivantes consistant à :
    - mesurer la pression hydraulique réelle régnant du côté charge du moteur hydraulique (5) avant la fermeture, en particulier juste avant la fermeture, du frein mécanique (9),
    - déterminer une pression de consigne en décalant la pression réelle mesurée d'une valeur préalablement définie en fonction de l'état de charge,
    - générer la pression de consigne dans le volume (12) avant l'ouverture du frein mécanique (9), du fluide provenant de la conduite de levage (3) étant délivré dans le volume (12) afin d'augmenter la pression.
  8. Procédé selon la revendication 7, caractérisé en ce que les étapes de procédé sont exécutées de manière entièrement automatique avant le levage ou la descente d'une charge.
  9. Procédé selon l'une quelconque des revendications 7 ou 8, caractérisé en ce que l'état de fonctionnement actuel est détecté avant la fermeture, en particulier juste avant la fermeture du frein mécanique (9), et une distinction est faite en particulier entre le levage et la descente d'une charge.
  10. Procédé selon l'une quelconque des revendications 7 à 9, caractérisé en ce que le procédé est appliqué aussi bien pendant/avant le levage que pendant/avant la descente d'une charge.
  11. Procédé selon l'une quelconque des revendications 7 à 10, caractérisé en ce que le procédé n'est pas appliqué si la pression de charge, en particulier la pression réelle mesurée, franchit une valeur préalablement définie.
  12. Procédé selon l'une quelconque des revendications 7 à 11, caractérisé en ce que le frein mécanique (9) est ouvert pendant le levage de la charge, et le frein mécanique (9) et la soupape de frein de descente (4) sont ouverts pendant la descente de la charge.
  13. Procédé selon l'une quelconque des revendications 7 à 12, caractérisé en ce que la pression réelle est mesurée du côté charge du moteur hydraulique (5) ou du côté de la conduite de levage (3).
  14. Procédé selon l'une quelconque des revendications 7 à 13, caractérisé en ce que la pression réelle est mesurée du côté charge de la soupape de frein de descente (4) ou du côté de la conduite de levage (3).
EP20090158346 2008-05-21 2009-04-21 Compensation de fuite électro-hydraulique Active EP2123593B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200810024512 DE102008024512B4 (de) 2008-05-21 2008-05-21 Elektrohydraulische Leck-Kompensation

Publications (2)

Publication Number Publication Date
EP2123593A1 EP2123593A1 (fr) 2009-11-25
EP2123593B1 true EP2123593B1 (fr) 2012-05-23

Family

ID=40947353

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20090158346 Active EP2123593B1 (fr) 2008-05-21 2009-04-21 Compensation de fuite électro-hydraulique

Country Status (8)

Country Link
US (1) US8167154B2 (fr)
EP (1) EP2123593B1 (fr)
JP (1) JP2009280402A (fr)
KR (1) KR101184151B1 (fr)
CN (1) CN101585498B (fr)
CA (1) CA2666297C (fr)
DE (1) DE102008024512B4 (fr)
ES (1) ES2388367T3 (fr)

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JP5072926B2 (ja) * 2009-09-03 2012-11-14 株式会社小松製作所 作業車両
DK177006B1 (en) * 2010-01-19 2010-11-22 Ah Ind Projects Aps Method for controlling orientation of a load suspended in a carrier wire around the wire as well as a player arrangement
DE202010011345U1 (de) * 2010-08-11 2010-10-21 Terex Demag Gmbh Überwachungs- und Warneinrichtung an Baumaschinen
CN102893038B (zh) * 2010-12-21 2015-02-11 株式会社小松制作所 铺管机及铺管机的预热方法
CN102140807B (zh) * 2011-01-11 2012-05-23 徐州徐工挖掘机械有限公司 一种提高挖掘机挖掘操纵特性和平整作业特性的方法
DE102012006551B4 (de) 2012-04-02 2022-10-20 Wessel-Hydraulik Gmbh Hydraulische Schaltungsanordnung
DE102012010266B4 (de) * 2012-05-25 2015-02-12 Wessel-Hydraulik Gmbh Hydraulische Schaltungsanordnung
US9950910B2 (en) 2012-09-11 2018-04-24 Eltronic A/S Method for controlling the orientation of a load suspended from a bearing wire about said bearing wire and a winch arrangement
CN103072896B (zh) * 2013-01-28 2015-04-22 徐州重型机械有限公司 分体式电比例先导控制阀及流动式起重机
CN103287999B (zh) * 2013-06-18 2015-08-05 中联重科股份有限公司 工程机械及其卷扬变幅液压系统、作业方法
JP6325801B2 (ja) * 2013-11-20 2018-05-16 株式会社神戸製鋼所 電動ウインチ装置
NO2760517T3 (fr) * 2014-01-30 2017-12-30
CN105927602B (zh) * 2016-07-08 2017-12-08 四川宏华石油设备有限公司 一种绞车控制装置
CN108516467B (zh) * 2018-06-20 2019-10-25 徐州重型机械有限公司 起重机械的液压控制系统和起重机械
EP3653562A1 (fr) * 2018-11-19 2020-05-20 B&R Industrial Automation GmbH Procédé et régulateur d'oscillation permettant de réguler les oscillations d'un système technique oscillant
CN114014191B (zh) * 2021-12-03 2023-08-18 中船华南船舶机械有限公司 一种双保险绞车的液压系统

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Also Published As

Publication number Publication date
KR20090121233A (ko) 2009-11-25
ES2388367T3 (es) 2012-10-11
KR101184151B1 (ko) 2012-09-18
CN101585498A (zh) 2009-11-25
CA2666297A1 (fr) 2009-11-21
EP2123593A1 (fr) 2009-11-25
DE102008024512B4 (de) 2010-08-12
JP2009280402A (ja) 2009-12-03
CN101585498B (zh) 2013-07-03
CA2666297C (fr) 2012-02-21
US8167154B2 (en) 2012-05-01
US20090294746A1 (en) 2009-12-03
DE102008024512A1 (de) 2010-01-28

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