EP2698477A3 - Quick coupling, method for operating a quick coupling and quick coupling device - Google Patents

Quick coupling, method for operating a quick coupling and quick coupling device Download PDF

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Publication number
EP2698477A3
EP2698477A3 EP13180732.3A EP13180732A EP2698477A3 EP 2698477 A3 EP2698477 A3 EP 2698477A3 EP 13180732 A EP13180732 A EP 13180732A EP 2698477 A3 EP2698477 A3 EP 2698477A3
Authority
EP
European Patent Office
Prior art keywords
hydraulic
locking
chamber
line
quick coupling
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
EP13180732.3A
Other languages
German (de)
French (fr)
Other versions
EP2698477A2 (en
EP2698477B1 (en
Inventor
Peter Lehnhoff
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.)
LEHNHOFF HARTSTAHL GmbH
Original Assignee
Lehnhoff Hartstahl 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 Lehnhoff Hartstahl GmbH filed Critical Lehnhoff Hartstahl GmbH
Publication of EP2698477A2 publication Critical patent/EP2698477A2/en
Publication of EP2698477A3 publication Critical patent/EP2698477A3/en
Application granted granted Critical
Publication of EP2698477B1 publication Critical patent/EP2698477B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3663—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat hydraulically-operated

Abstract

Die Erfindung betrifft einen Schnellwechsler (16) zum Ankuppeln eines mit einem Adapter (18) versehenen Werkzeugs (12) an eine Arbeitsmaschine (14), an dem der Schnellwechsler (16) anordbar ist, mit einer Verriegelungseinrichtung (32) zur Herstellung einer mechanischen Verbindung zwischen Arbeitsmaschine (14) und Werkzeug (12), wobei die Verriegelungseinrichtung (32) zumindest ein Verriegelungselement (22, 24) aufweist, welches durch eine Federkraft in Richtung einer Verriegelungsposition beaufschlagt ist, und einen mit dem Verriegelungselement (22, 24) verbundenen Hydraulikkolben (28), der in einem Zylinder (30) verschiebbar angeordnet ist und den Zylinderinnenraum in eine Öffnungskammer (44) und eine Verriegelungskammer (42) teilt, wobei die Öffnungskammer (44) mit einem Hydraulikventil (56) über eine erste Hydraulikleitung (50) verbunden ist, um die Öffnungskammer (44) und somit den Hydraulikkolben (28) bedarfsweise mit Hydraulikdruck so zu beaufschlagen, dass der Hydraulikkolben (28) und das mit dem Hydraulikkolben (28) verbundene Verriegelungselement (22, 24) aus der Verriegelungsposition in eine Öffnungsposition gegen die Federkraft verfahren wird, wobei die Verriegelungskammer (42) mit einer zweiten Hydraulikleitung (46) verbunden ist, und mit Hydrauliköl bedarfsweise beaufschlagbar ist. Die Erfindung zeichnet sich dadurch aus, dass die erste Hydraulikleitung (50) und die zweite Hydraulikleitung (46) über eine Verbindungsleitung (54) kurzgeschlossen sind und über eine einzige hydraulische Versorgungsleitung (48) an ein Hydraulikventil (56) angeschlossen sind, und dass in der zweiten Hydraulikleitung (46) ein den Rückfluss aus der Verriegelungskammer (42) sperrendes Ventil (52) angeordnet ist.

Figure imgaf001
The invention relates to a quick coupler (16) for coupling a tool (12) provided with an adapter (18) to a work machine (14) on which the quick coupler (16) can be arranged, with a locking device (32) for producing a mechanical connection between working machine (14) and tool (12), wherein the locking device (32) has at least one locking element (22, 24), which is acted upon by a spring force in the direction of a locking position, and a hydraulic piston connected to the locking element (22, 24) (28) slidably disposed in a cylinder (30) and dividing the cylinder interior into an orifice chamber (44) and a lock chamber (42), the orifice chamber (44) being connected to a hydraulic valve (56) via a first hydraulic line (50). is connected to the hydraulic pressure to pressurize the opening chamber (44) and thus the hydraulic piston (28), if necessary, so that the hydraulic piston n (28) and the locking element (22, 24) connected to the hydraulic piston (28) is moved from the locking position to an opening position against the spring force, the locking chamber (42) being connected to a second hydraulic line (46) and hydraulic oil is acted upon as needed. The invention is characterized in that the first hydraulic line (50) and the second hydraulic line (46) via a connecting line (54) are short-circuited and connected via a single hydraulic supply line (48) to a hydraulic valve (56), and in that the second hydraulic line (46) is arranged a valve (52) blocking the return flow out of the locking chamber (42).
Figure imgaf001
EP13180732.3A 2012-08-17 2013-08-16 Quick coupling, method for operating a quick coupling and quick coupling device Active EP2698477B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012107567.0A DE102012107567B4 (en) 2012-08-17 2012-08-17 Quick coupler, method for operating a quick coupler and quick-change device

Publications (3)

Publication Number Publication Date
EP2698477A2 EP2698477A2 (en) 2014-02-19
EP2698477A3 true EP2698477A3 (en) 2017-11-01
EP2698477B1 EP2698477B1 (en) 2020-09-23

Family

ID=49003663

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13180732.3A Active EP2698477B1 (en) 2012-08-17 2013-08-16 Quick coupling, method for operating a quick coupling and quick coupling device

Country Status (3)

Country Link
EP (1) EP2698477B1 (en)
DE (1) DE102012107567B4 (en)
ES (1) ES2827002T3 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017122889A1 (en) 2017-10-02 2019-04-04 Lehnhoff Hartstahl Gmbh Quick coupler
DE102018115249A1 (en) 2018-06-25 2020-01-02 Lehnhoff Hartstahl Gmbh Quick changer and quick change device with a quick changer
CN109555177B (en) * 2019-01-25 2023-10-17 北京科技大学 Automatic fast hydraulic switching docking platform
CN112982522B (en) * 2021-02-20 2022-10-04 三一重机有限公司 Control system of attachment replacement device of excavator and excavator with same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3705656A (en) * 1971-02-18 1972-12-12 Deere & Co Quick-attach loader bucket
AT2322U2 (en) * 1998-05-19 1998-08-25 Baumaschinentechnik Ges M B H QUICK-CHANGE DEVICE FOR EXCAVATORS WITH LOCKING LOCK
EP1012407A1 (en) * 1997-05-21 2000-06-28 Accima AB Device for detachable coupling of an implement to the operating arm of an excavator
EP1057941A2 (en) * 1999-05-11 2000-12-06 Daemo Engineering Co., Ltd. A coupling apparatus for detachably attaching an excavating device to excavator

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2697302B1 (en) * 1992-10-23 1994-12-30 Dorguin Jean Pierre Quick coupling device for civil engineering and handling equipment.
IT1310182B1 (en) * 1999-03-02 2002-02-11 Mantovanibenne S R L DEVICE FOR THE QUICK LOCKING AND UNLOCKING OF OPERATING TOOLS.
DE102005033535A1 (en) * 2005-07-14 2007-01-18 Deere & Company, Moline Hydraulic arrangement
GB2474572B (en) * 2009-10-16 2014-11-26 Hill Engineering Ltd Control system for a hydraulic coupler

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3705656A (en) * 1971-02-18 1972-12-12 Deere & Co Quick-attach loader bucket
EP1012407A1 (en) * 1997-05-21 2000-06-28 Accima AB Device for detachable coupling of an implement to the operating arm of an excavator
AT2322U2 (en) * 1998-05-19 1998-08-25 Baumaschinentechnik Ges M B H QUICK-CHANGE DEVICE FOR EXCAVATORS WITH LOCKING LOCK
EP1057941A2 (en) * 1999-05-11 2000-12-06 Daemo Engineering Co., Ltd. A coupling apparatus for detachably attaching an excavating device to excavator

Also Published As

Publication number Publication date
DE102012107567A1 (en) 2014-02-20
EP2698477A2 (en) 2014-02-19
EP2698477B1 (en) 2020-09-23
DE102012107567B4 (en) 2015-03-19
ES2827002T3 (en) 2021-05-19

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