EP1614814A2 - Excavatrice et machine pour le transfert de matériel. - Google Patents

Excavatrice et machine pour le transfert de matériel. Download PDF

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Publication number
EP1614814A2
EP1614814A2 EP05014569A EP05014569A EP1614814A2 EP 1614814 A2 EP1614814 A2 EP 1614814A2 EP 05014569 A EP05014569 A EP 05014569A EP 05014569 A EP05014569 A EP 05014569A EP 1614814 A2 EP1614814 A2 EP 1614814A2
Authority
EP
European Patent Office
Prior art keywords
hydraulic
excavator
material handling
hydraulic cylinder
additional
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Withdrawn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
EP05014569A
Other languages
German (de)
English (en)
Other versions
EP1614814A3 (fr
Inventor
Dirk Asam
Rolf Mieger
Roland Wachter
Bernd Wager
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.)
Liebherr Hydraulikbagger GmbH
Original Assignee
Liebherr Hydraulikbagger GmbH
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 Liebherr Hydraulikbagger GmbH filed Critical Liebherr Hydraulikbagger GmbH
Publication of EP1614814A2 publication Critical patent/EP1614814A2/fr
Publication of EP1614814A3 publication Critical patent/EP1614814A3/fr
Withdrawn legal-status Critical Current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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/14—Energy-recuperation means
    • 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
    • E02F9/2217—Hydraulic or pneumatic drives with energy recovery arrangements, e.g. using accumulators, flywheels
    • 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
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/024—Installations or systems with accumulators used as a supplementary power source, e.g. to store energy in idle periods to balance pump load

Definitions

  • the invention relates to excavators and machines for material handling with a movable element via at least one hydraulic cylinder.
  • FIG. 1 a detail of an excavator and machines for material handling is shown by way of example according to the prior art.
  • a boom 12 is hinged to a revolving platform 10 of an excavator, which is movable over two pairs of hydraulic cylinders 14.
  • the Hydraulic cylinder pairs are interconnected, as can be seen from the hydraulic circuit diagram according to FIG. 1a.
  • the object of the present invention is therefore to provide an excavator or a machine for material handling according to the preamble of claim 1, wherein as much as possible of the energy used to lift the equipment and the attachment tool can be stored for successive working cycles.
  • this object is achieved in that, in addition to the at least one hydraulic cylinder present for moving the movable elements, one or more additional hydraulic cylinders are articulated to the element to be moved, wherein the one or more additional hydraulic cylinders are connected to one or more own hydraulic accumulators.
  • These additional hydraulic cylinders can be arranged parallel to the already existing at least one hydraulic cylinder, but it can also be mounted elsewhere.
  • the additional hydraulic cylinders do not engage in the hydraulic system, but are connected on the piston side with a hydraulic accumulator, which may consist of a piston or bladder accumulator.
  • the element to be moved may be a boom or a stick of the excavator or the material handling machine.
  • the additional hydraulic cylinder (s) may be interposed between two hydraulic cylinders used to move the element, i. H. serve the boom or the stem, be arranged.
  • the memory is loaded during the downward movement of the equipment.
  • the stored energy then supports the upward movement of the equipment.
  • the equipment weight can be at least partially compensated.
  • the one or more hydraulic cylinders can be connected via a switchable valve to the main hydraulic circuit of the excavator or machine for material handling.
  • a switchable valve to the main hydraulic circuit of the excavator or machine for material handling.
  • the number of additional hydraulic cylinders can be interconnected advantageous in a multi-unit equipment and providing more than one additional hydraulic cylinder.
  • the additional hydraulic cylinder of the handle can be fed, so that the handle is supported during extension and vice versa.
  • the solution according to the invention of the object stated at the outset leads to a number of advantages.
  • the main hydraulic cylinders used since then can be dimensioned smaller. Overall, less energy is needed from the diesel engine to lift. Higher working speeds are possible.
  • the engine can theoretically have less power or, if it has a higher one Performance, he can work in part-load range. Overall, less energy must be dissipated through the radiator. The machine efficiency can be increased significantly. This can reduce fuel consumption. This in turn leads to a reduction in operating costs.
  • the bearing loads of the hydraulic cylinder can be distributed from usually four to six bearings. Due to the provision of his or her own memory for the additional hydraulic cylinder or cylinders, an active feed into the main hydraulic circuit is not necessary. As a result, no complex hydraulic circuits are necessary.
  • FIG. 2 A detail of a hydraulic excavator is shown by way of example with reference to FIG. 2 for an excavator and material handling machines.
  • a boom 12 is pivotally hinged to a revolving platform 10, wherein the pivoting up and down of the Jib 12 via hydraulic cylinder 14 takes place.
  • an additional hydraulic cylinder 16 is arranged centrally. It can be seen from the hydraulic circuit diagram according to FIG. 2a that the hydraulic cylinders 14 are connected to one another in a similar manner, as is already known from the prior art (cf., FIG. 1a).
  • an additional hydraulic cylinder 16 is provided, whose piston side 18 is connected to a hydraulic accumulator 20, which may be, for example, a piston or bladder accumulator.
  • the additional hydraulic cylinder 16 is independent of the hydraulic cylinders 14.
  • the hydraulic cylinder 16 serves to displace the hydraulic fluid by means of the piston 22 in the direction of the hydraulic accumulator 20 as the equipment moves downwards. The energy is stored here until the boom 12 is to be moved up again.
  • the additional hydraulic cylinder 16 the stored energy in the memory 20 is released again, so that a large part of the mass force of the boom and the attached thereto stem or equipment is compensated and no longer has to be applied by the hydraulic cylinders 14.
  • FIG. 3 In the hydraulic circuit diagram of FIG. 3 is a basically similar embodiment variant, as in the hydraulic circuit diagram according to the embodiment of FIG. 2a.
  • the additional hydraulic cylinder 16 which is likewise connected here to a hydraulic accumulator 20, via appropriate switching valves 22 and 24, an optional connection to the main hydraulic circuit, via which the hydraulic cylinders 14 are supplied, is possible.
  • the additional hydraulic cylinder 16 can be switched into the main hydraulic circuit. This may be desirable, for example, if the memory 20 is defective and if the hydraulic excavator defies this defect continuously continue to work until it can be repaired.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Operation Control Of Excavators (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Shovels (AREA)
EP05014569A 2004-07-07 2005-07-05 Excavatrice et machine pour le transfert de matériel. Withdrawn EP1614814A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004032868A DE102004032868A1 (de) 2004-07-07 2004-07-07 Bagger und Maschine zum Materialumschlag

Publications (2)

Publication Number Publication Date
EP1614814A2 true EP1614814A2 (fr) 2006-01-11
EP1614814A3 EP1614814A3 (fr) 2007-05-02

Family

ID=35033735

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05014569A Withdrawn EP1614814A3 (fr) 2004-07-07 2005-07-05 Excavatrice et machine pour le transfert de matériel.

Country Status (3)

Country Link
US (2) US7434391B2 (fr)
EP (1) EP1614814A3 (fr)
DE (1) DE102004032868A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012013253A1 (fr) * 2010-07-27 2012-02-02 Hydac Technology Gmbh Dispositif pour la récupération d'énergie
EP2690292A1 (fr) * 2011-03-21 2014-01-29 Shuanglai Yang Système de relevage et procédé de relevage pour la flèche d'un engin de chantier, et engin de chantier pour ce procédé
EP2148014A3 (fr) * 2008-07-24 2016-06-22 Liebherr-Hydraulikbagger GmbH Appareil de travail

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE492730T1 (de) * 2008-04-29 2011-01-15 Parker Hannifin Ab Anordnung zum bedienen einer hydraulischen vorrichtung
DE202008013896U1 (de) 2008-10-17 2010-03-11 Liebherr-Hydraulikbagger Gmbh Verfahrbares Arbeitsgerät
EP2278167B1 (fr) * 2009-07-23 2013-11-13 Q Plus Beheer B.V. Procédé de fonctionnement d'un système pneumatique et système pneumatique
DE102010051650A1 (de) * 2010-11-17 2012-05-24 Liebherr-Hydraulikbagger Gmbh Arbeitsgerät
DE102011008145B3 (de) * 2011-01-08 2012-02-02 Parker Hannifin Gmbh Energieeffizienter hydraulischer Antrieb für die Linearbewegung eines Massekörpers
US8966892B2 (en) 2011-08-31 2015-03-03 Caterpillar Inc. Meterless hydraulic system having restricted primary makeup
US8863509B2 (en) 2011-08-31 2014-10-21 Caterpillar Inc. Meterless hydraulic system having load-holding bypass
US8944103B2 (en) 2011-08-31 2015-02-03 Caterpillar Inc. Meterless hydraulic system having displacement control valve
US9057389B2 (en) 2011-09-30 2015-06-16 Caterpillar Inc. Meterless hydraulic system having multi-actuator circuit
US9151018B2 (en) * 2011-09-30 2015-10-06 Caterpillar Inc. Closed-loop hydraulic system having energy recovery
US8966891B2 (en) 2011-09-30 2015-03-03 Caterpillar Inc. Meterless hydraulic system having pump protection
US9051714B2 (en) 2011-09-30 2015-06-09 Caterpillar Inc. Meterless hydraulic system having multi-actuator circuit
US9080310B2 (en) 2011-10-21 2015-07-14 Caterpillar Inc. Closed-loop hydraulic system having regeneration configuration
US8943819B2 (en) 2011-10-21 2015-02-03 Caterpillar Inc. Hydraulic system
US8978374B2 (en) 2011-10-21 2015-03-17 Caterpillar Inc. Meterless hydraulic system having flow sharing and combining functionality
US8919114B2 (en) 2011-10-21 2014-12-30 Caterpillar Inc. Closed-loop hydraulic system having priority-based sharing
US8973358B2 (en) 2011-10-21 2015-03-10 Caterpillar Inc. Closed-loop hydraulic system having force modulation
US8984873B2 (en) 2011-10-21 2015-03-24 Caterpillar Inc. Meterless hydraulic system having flow sharing and combining functionality
US9068578B2 (en) 2011-10-21 2015-06-30 Caterpillar Inc. Hydraulic system having flow combining capabilities
US8978373B2 (en) 2011-10-21 2015-03-17 Caterpillar Inc. Meterless hydraulic system having flow sharing and combining functionality
US8910474B2 (en) 2011-10-21 2014-12-16 Caterpillar Inc. Hydraulic system
US8893490B2 (en) 2011-10-21 2014-11-25 Caterpillar Inc. Hydraulic system
US9279236B2 (en) 2012-06-04 2016-03-08 Caterpillar Inc. Electro-hydraulic system for recovering and reusing potential energy
WO2014017958A1 (fr) * 2012-07-26 2014-01-30 Volvo Construction Equipment Ab Tringlerie équilibrée
US9200644B2 (en) * 2012-08-28 2015-12-01 Deere & Company Implement with reduced hydraulic oil exchange
US9290912B2 (en) 2012-10-31 2016-03-22 Caterpillar Inc. Energy recovery system having integrated boom/swing circuits
US9290911B2 (en) 2013-02-19 2016-03-22 Caterpillar Inc. Energy recovery system for hydraulic machine
DE102013006204A1 (de) * 2013-04-04 2014-10-09 Sennebogen Maschinenfabrik Gmbh Betätigungseinrichtung und Arbeitsgerätschaft mit einer solchen Betätigungseinrichtung
US9441644B2 (en) 2014-08-26 2016-09-13 Ut-Battelle, Llc Energy efficient fluid powered linear actuator with variable area
US9494168B2 (en) 2014-08-26 2016-11-15 Ut-Battelle, Llc Energy efficient fluid powered linear actuator with variable area and concentric chambers
DE102015009111A1 (de) * 2015-07-19 2017-01-19 Johannes Burde Eine Vorrichtung um die hydraulischen Antriebe einer mobilen Arbeitsmaschine in ihrer Antriebsbewegung und -kraft zu unterstützen.
EP3536865B1 (fr) * 2015-08-14 2020-10-14 Parker-Hannifin Corporation Récupération d'énergie potentielle de flèche d'une excavatrice hydraulique
CN105421510A (zh) * 2015-12-14 2016-03-23 福建工程学院 一种采用变径平衡液压缸的动臂节能系统
CN107829988A (zh) * 2017-11-02 2018-03-23 中科聚信洁能热锻装备研发股份有限公司 一种液压机回程的无泵蓄能器闭式油路及其控制方法
WO2021035477A1 (fr) * 2019-08-26 2021-03-04 Guangxi Liugong Machinery Co., Ltd. Excavatrice électrique
DE202022101057U1 (de) 2022-02-24 2022-03-08 Timur Serbay Hydraulische Betätigungseinrichtung für ein hydraulisch betätigtes Arbeitsgerät
US11668072B1 (en) * 2022-10-26 2023-06-06 Bourgault Industries Ltd. Potential energy storage and control system for a hydraulically actuated element

Citations (11)

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Publication number Priority date Publication date Assignee Title
FR2238811A1 (fr) * 1973-07-24 1975-02-21 Poclain Sa
JPS60250128A (ja) * 1984-05-25 1985-12-10 Mitsubishi Heavy Ind Ltd 液圧再生回路
JPH0336333A (ja) * 1989-06-30 1991-02-18 Komatsu Ltd 油圧式掘削機の位置エネルギー回収再生装置
JPH04120324A (ja) * 1990-09-10 1992-04-21 Komatsu Ltd 作業機の位置エネルギー回収・活用装置
WO1993011363A1 (fr) * 1991-12-04 1993-06-10 Hydac Technology Gmbh Recuperateur d'energie
JPH05163745A (ja) * 1991-12-13 1993-06-29 Komatsu Ltd 昇降作業機の位置エネルギ回収装置
JPH09310379A (ja) * 1996-05-21 1997-12-02 Shin Caterpillar Mitsubishi Ltd 作業機械における油圧シリンダの制振装置
WO1998033989A1 (fr) * 1997-01-31 1998-08-06 Lars Bruun Dispositif pour engin hydraulique
JP2004116676A (ja) * 2002-09-26 2004-04-15 Komatsu Ltd 作業機械
JP2004116675A (ja) * 2002-09-26 2004-04-15 Komatsu Ltd 作業機の位置エネルギ回収・再生装置
JP2004125094A (ja) * 2002-10-03 2004-04-22 Komatsu Ltd 作業車両の油圧システム

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GB2365407B (en) * 2000-05-25 2003-10-08 Bamford Excavators Ltd Hydraulic system for wheeled loader
US6655136B2 (en) 2001-12-21 2003-12-02 Caterpillar Inc System and method for accumulating hydraulic fluid
US6748738B2 (en) 2002-05-17 2004-06-15 Caterpillar Inc. Hydraulic regeneration system
US6918247B1 (en) * 2003-11-19 2005-07-19 Jack E Warner Assisted hydraulic system for moving a structural member

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2238811A1 (fr) * 1973-07-24 1975-02-21 Poclain Sa
JPS60250128A (ja) * 1984-05-25 1985-12-10 Mitsubishi Heavy Ind Ltd 液圧再生回路
JPH0336333A (ja) * 1989-06-30 1991-02-18 Komatsu Ltd 油圧式掘削機の位置エネルギー回収再生装置
JPH04120324A (ja) * 1990-09-10 1992-04-21 Komatsu Ltd 作業機の位置エネルギー回収・活用装置
WO1993011363A1 (fr) * 1991-12-04 1993-06-10 Hydac Technology Gmbh Recuperateur d'energie
JPH05163745A (ja) * 1991-12-13 1993-06-29 Komatsu Ltd 昇降作業機の位置エネルギ回収装置
JPH09310379A (ja) * 1996-05-21 1997-12-02 Shin Caterpillar Mitsubishi Ltd 作業機械における油圧シリンダの制振装置
WO1998033989A1 (fr) * 1997-01-31 1998-08-06 Lars Bruun Dispositif pour engin hydraulique
JP2004116676A (ja) * 2002-09-26 2004-04-15 Komatsu Ltd 作業機械
JP2004116675A (ja) * 2002-09-26 2004-04-15 Komatsu Ltd 作業機の位置エネルギ回収・再生装置
JP2004125094A (ja) * 2002-10-03 2004-04-22 Komatsu Ltd 作業車両の油圧システム

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2148014A3 (fr) * 2008-07-24 2016-06-22 Liebherr-Hydraulikbagger GmbH Appareil de travail
WO2012013253A1 (fr) * 2010-07-27 2012-02-02 Hydac Technology Gmbh Dispositif pour la récupération d'énergie
EP2952773A1 (fr) * 2010-07-27 2015-12-09 Hydac Technology Gmbh Dispositif de recuperation d'energie
EP2690292A1 (fr) * 2011-03-21 2014-01-29 Shuanglai Yang Système de relevage et procédé de relevage pour la flèche d'un engin de chantier, et engin de chantier pour ce procédé
EP2690292A4 (fr) * 2011-03-21 2015-04-15 Shuanglai Yang Système de relevage et procédé de relevage pour la flèche d'un engin de chantier, et engin de chantier pour ce procédé

Also Published As

Publication number Publication date
US20090071139A1 (en) 2009-03-19
US7434391B2 (en) 2008-10-14
US20060053666A1 (en) 2006-03-16
DE102004032868A1 (de) 2006-02-09
EP1614814A3 (fr) 2007-05-02

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