EP2251550A3 - Hydraulic system and mobile construction machine - Google Patents

Hydraulic system and mobile construction machine Download PDF

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Publication number
EP2251550A3
EP2251550A3 EP10004221.7A EP10004221A EP2251550A3 EP 2251550 A3 EP2251550 A3 EP 2251550A3 EP 10004221 A EP10004221 A EP 10004221A EP 2251550 A3 EP2251550 A3 EP 2251550A3
Authority
EP
European Patent Office
Prior art keywords
piston
hydraulic system
construction machine
mobile construction
cylinder units
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
EP10004221.7A
Other languages
German (de)
French (fr)
Other versions
EP2251550B1 (en
EP2251550A2 (en
Inventor
Frank Helbling
Cyril Graebling
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 France SAS
Original Assignee
Liebherr France SAS
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 France SAS filed Critical Liebherr France SAS
Publication of EP2251550A2 publication Critical patent/EP2251550A2/en
Publication of EP2251550A3 publication Critical patent/EP2251550A3/en
Application granted granted Critical
Publication of EP2251550B1 publication Critical patent/EP2251550B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F15B11/22—Synchronisation of the movement of two or more servomotors
    • 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
    • E02F9/2203—Arrangements for controlling the attitude of actuators, e.g. speed, floating function
    • 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
    • F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
    • F15B20/005—Leakage; Spillage; Hose burst
    • 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
    • F15B2211/40553—Flow control characterised by the type of flow control means or valve with pressure compensating 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
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40576—Assemblies of multiple valves
    • F15B2211/40584—Assemblies of multiple valves the flow control means arranged in parallel with a check 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
    • F15B2211/40—Flow control
    • F15B2211/465—Flow control with pressure compensation
    • 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
    • F15B2211/7114—Multiple output members, e.g. multiple hydraulic motors or cylinders with direct connection between the chambers of different actuators
    • F15B2211/7128—Multiple output members, e.g. multiple hydraulic motors or cylinders with direct connection between the chambers of different actuators the chambers being connected in parallel

Abstract

Die vorliegende Erfindung betrifft ein Hydrauliksystem mit wenigstens zwei Kolbenzylindereinheiten, wenigstens einer Ausgleichsleitung zum Druckausgleich zwischen den Kolbenzylindereinheiten und Steuerkolben, wobei je ein Steuerkolben einem Anschluss einer Kolbenzylindereinheit zugeordnet ist, und wobei wenigstens ein 2-Wege-Stromregelventil mit Rückschlagventilfunktion mit der wenigstens einen Ausgleichsleitung in Verbindung steht.

Figure imgaf001
The present invention relates to a hydraulic system having at least two piston-cylinder units, at least one equalization line for pressure equalization between the piston-cylinder units and control piston, wherein each one control piston associated with a port of a piston-cylinder unit, and wherein at least one 2-way flow control valve with check valve function with the at least one compensation line in Connection stands.
Figure imgaf001
EP10004221.7A 2009-04-29 2010-04-21 mobile construction machine with a hydraulic system Active EP2251550B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202009006299U DE202009006299U1 (en) 2009-04-29 2009-04-29 Hydraulic system as well as mobile construction machine

Publications (3)

Publication Number Publication Date
EP2251550A2 EP2251550A2 (en) 2010-11-17
EP2251550A3 true EP2251550A3 (en) 2013-11-06
EP2251550B1 EP2251550B1 (en) 2018-09-12

Family

ID=42635269

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10004221.7A Active EP2251550B1 (en) 2009-04-29 2010-04-21 mobile construction machine with a hydraulic system

Country Status (6)

Country Link
US (1) US20100275771A1 (en)
EP (1) EP2251550B1 (en)
CA (1) CA2701473A1 (en)
DE (1) DE202009006299U1 (en)
ES (1) ES2701181T3 (en)
TR (1) TR201819106T4 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104481953B (en) * 2014-12-12 2016-06-15 燕山大学 The pile-up valve that independently controls of throttling limit that assignment of traffic is unrelated with load pressure
US9863120B2 (en) * 2015-04-29 2018-01-09 Caterpillar Inc. System and method for controlling a machine implement
IT201800007167A1 (en) * 2018-07-13 2020-01-13 BALANCING DEVICE

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1948293A1 (en) * 1969-09-24 1971-03-25 Rexroth Gmbh G L Hydraulic system consisting of at least two consumers
GB2055977A (en) * 1979-07-26 1981-03-11 Fiat Allis Construct Machine Hydraulic control systems
US6357549B1 (en) * 1999-06-03 2002-03-19 D. H. Blattner & Sons, Inc. Guide rail climbing lifting platform and method
WO2007019712A1 (en) * 2005-08-19 2007-02-22 Bucher Hydraulics Ag Circuit for controlling a double-action hydraulic drive cylinder

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US3213886A (en) * 1962-10-22 1965-10-26 Pearne And Lacy Machine Compan Flow control valve with stop means movable at a controlled rate
US3404650A (en) * 1965-04-14 1968-10-08 Manitowoc Shipbuilding Inc System and apparatus for translating and discharging a load
US3497894A (en) * 1968-02-20 1970-03-03 Earl Dallas Smith Vehicle cleaning brush drive system
US3535876A (en) * 1969-02-27 1970-10-27 Oilgear Co Flow transducer
US3831492A (en) * 1972-12-04 1974-08-27 Eaton Corp Overload protection device for counterbalance vehicles
US3891158A (en) * 1973-07-13 1975-06-24 Du Pont Method and apparatus for splicing a standby web to a running web
US4192346A (en) * 1976-08-25 1980-03-11 Shoketsu Kinzoku Kogyo Kabushiki Kaisha Control valve
DE2707630A1 (en) * 1977-02-23 1978-08-24 Orenstein & Koppel Ag ELECTRONICALLY CONTROLLED PIPE BREAKAGE PROTECTION
NL8001892A (en) * 1980-03-31 1981-11-02 Ihc Holland Nv SPLITTER OR SIMILAR VESSEL.
JPS56150601A (en) * 1980-04-22 1981-11-21 Toyooki Kogyo Co Ltd Driving system for hydraulic actuator
US4418609A (en) * 1981-03-16 1983-12-06 Wickline Well pumping system
US4516473A (en) * 1981-05-07 1985-05-14 Shokestu Kinzoku Kogyo Kabushiki Kaisha Cylinder driving system
US4522109A (en) * 1983-11-21 1985-06-11 J. I. Case Company Leak-detecting hydraulic system
DE3806916A1 (en) * 1988-03-03 1989-09-14 Daimler Benz Ag VACUUM SUPPLY SYSTEM IN A MOTOR VEHICLE
DE3901475C2 (en) * 1989-01-19 1994-07-14 Danfoss As Fluid controlled servo assembly
US5290048A (en) * 1990-11-09 1994-03-01 Nissan Motor Co., Ltd. Working fluid circuit for active suspension control system of vehicle
KR100444193B1 (en) * 1999-02-09 2004-08-21 히다찌 겐끼 가부시키가이샤 Wheel type working vehicle
JP3598235B2 (en) * 1999-03-10 2004-12-08 Ｓｍｃ株式会社 Pressure flow control valve
US6425820B1 (en) * 2000-03-30 2002-07-30 Jack Kennedy Metal Products And Buildings, Inc. Mine door power drive system
US6505786B2 (en) * 2000-06-23 2003-01-14 Trioliet Mullos B.V. Silage cutter
US20060163859A1 (en) * 2001-11-21 2006-07-27 Gary Lehman Stabilizing jack
US6594954B1 (en) * 2002-01-04 2003-07-22 Jack Kennedy Metal Products & Buildings, Inc. Mine door installation
ITTO20020186A1 (en) * 2002-03-06 2003-09-08 Fiat Hitachi Excavators S P A EARTH-MOVING VEHICLE, AND METHOD TO ADJUST THE DESCENT OF AN OPERATING ARM OF SUCH VEHICLE.
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Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1948293A1 (en) * 1969-09-24 1971-03-25 Rexroth Gmbh G L Hydraulic system consisting of at least two consumers
GB2055977A (en) * 1979-07-26 1981-03-11 Fiat Allis Construct Machine Hydraulic control systems
US6357549B1 (en) * 1999-06-03 2002-03-19 D. H. Blattner & Sons, Inc. Guide rail climbing lifting platform and method
WO2007019712A1 (en) * 2005-08-19 2007-02-22 Bucher Hydraulics Ag Circuit for controlling a double-action hydraulic drive cylinder

Also Published As

Publication number Publication date
EP2251550B1 (en) 2018-09-12
DE202009006299U1 (en) 2010-09-09
EP2251550A2 (en) 2010-11-17
ES2701181T3 (en) 2019-02-21
US20100275771A1 (en) 2010-11-04
CA2701473A1 (en) 2010-10-29
TR201819106T4 (en) 2019-01-21

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