EP3927903B1 - Quick-coupling system having a gripper as locking element - Google Patents

Quick-coupling system having a gripper as locking element Download PDF

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Publication number
EP3927903B1
EP3927903B1 EP20709504.3A EP20709504A EP3927903B1 EP 3927903 B1 EP3927903 B1 EP 3927903B1 EP 20709504 A EP20709504 A EP 20709504A EP 3927903 B1 EP3927903 B1 EP 3927903B1
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EP
European Patent Office
Prior art keywords
gripper
coupling part
quick
fitting
arm
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EP20709504.3A
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German (de)
French (fr)
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EP3927903A1 (en
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Thomas Jansen
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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
    • 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
    • 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
    • E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
    • E02F3/402—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with means for facilitating the loading thereof, e.g. conveyors
    • E02F3/404—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with means for facilitating the loading thereof, e.g. conveyors comprising two parts movable relative to each other, e.g. for gripping
    • 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
    • E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
    • E02F3/963—Arrangements on backhoes for alternate use of different tools
    • E02F3/964—Arrangements on backhoes for alternate use of different tools of several tools mounted on one machine

Definitions

  • the invention relates to a quick-coupling system for the detachable attachment of attachments to a hydraulic excavator, the quick-coupling system having a boom coupling part that can be arranged on a boom of the hydraulic excavator and connected hydraulically to a hydraulic system of the excavator, and at least one add-on coupling part that can be arranged on an attachment, the boom coupling part having a hydraulically actuatable locking element which can be positively engaged with a positive locking element of the add-on coupling part and wherein the boom coupling part has a first engagement element which is arranged at a distance from the locking element and which can be positively engaged with a second engagement element of the add-on coupling part which is arranged at a distance from the positive locking element.
  • Such quick-coupling systems are well known from the prior art and allow rapid changing of the different attachments available for the hydraulic excavator, such as backhoe buckets, sieve buckets and hydraulic hammers.
  • the boom coupling part arranged on the boom of the respective excavator is shifted to the attachment, so that the first engagement element and the second engagement element are positively engaged with one another.
  • the locking element and the form-fitting element by a corresponding shift of the Boom coupling part aligned relative to each other in such a way that the locking element can be displaced hydraulically and in this way positively engages in the form-locking element.
  • the first engagement member or the second engagement member is typically a pin secured at opposite pin ends to a suitable support member of the boom coupler or the add-on coupler, respectively.
  • the correspondingly adapted second or first engagement element is usually hook-shaped or has a hook-shaped cross section, with the bolt being arranged in a correspondingly adapted recess of the hook-shaped engagement element and being able to be positively fixed there. Hydraulically displaceable bolts, which can be displaced into corresponding recesses in the positive-locking element, are usually used as locking elements.
  • quick-coupling systems are known from the prior art in which grippers are permanently provided, for example for receiving tree trunks or rails.
  • the grippers are arranged on the boom coupling part and can be used as a gripping tool when no attachment or no add-on coupling part with attachment is connected to the boom coupling part.
  • the grippers are also actuated hydraulically, so that two separate hydraulic supplies for the quick-coupling system are required for the operation of the quick-coupling systems with grippers known from the prior art required are.
  • Such a quick coupling system with a gripper is in the publication KR 101 394 863 B1 described.
  • the object of the invention is to further develop the quick-coupling systems known from the prior art in such a way that the simplest possible structure of the quick-coupling system is also made possible in connection with a gripper arranged on the boom coupling part.
  • the locking element is designed as a gripper and that the positive-locking element protrudes into a gripping area of the gripper when the first and the second engagement element are engaged with one another as intended, the gripper being used as a gripping tool, for example for picking up tree trunks or rails provided and usable when no attachment coupling part is connected to the boom coupling part.
  • the gripper being used as a gripping tool, for example for picking up tree trunks or rails provided and usable when no attachment coupling part is connected to the boom coupling part.
  • the quick coupling system with gripper can be operated in this way with just one hydraulic connection for the gripper.
  • the gripper can only be used when no attachment is attached to the boom coupling part, since the gripper is covered by the attachment when the attachment is mounted. The gripper is therefore without function when the attachment is mounted.
  • the use according to the invention of the gripper as a locking element does not limit the function of the quick-coupling system, rather the gripper, which was previously inoperative when the attachment is mounted, is used as the locking element.
  • the quick-coupling system with gripper can be designed to be significantly simpler and thus more cost-effective to produce and requires less maintenance.
  • the invention provides that the gripper has at least two gripper arms mounted in a gripper bearing so that they can be hydraulically pivoted relative to one another, with the gripping area being formed between the gripper arms when the gripper arms are arranged in a pivoted-out position and with the gripper arms resting on the form-fitting element and having a predetermined and exert gripping force acting in the direction of the gripper bearing on the interlocking element when the gripper arms are hydraulically shifted into a gripping position.
  • the gripping arms enclose the form-fitting element in the gripping area and displace the form-fitting element in the direction of the gripper bearing when the gripping arms close, so that the form-fitting element bears in a form-fitting manner on the gripper arms and the gripper bearing and is pressed in the direction of the gripper bearing.
  • the positive-locking element is advantageously rigidly connected to a carrier element of the add-on coupling part, the second engagement element advantageously also being rigidly arranged on the carrier element of the add-on coupling part.
  • the first engaging element is advantageously arranged rigidly on a corresponding support element of the boom coupling part, whereby the gripper bearing can also be rigidly connected to the support element of the boom coupling part.
  • the quick-coupling system is rigidly connected to the boom or is fixed to the boom in a pivotable and/or rotatable manner via a so-called tilt rotator.
  • the first engagement element is advantageously non-displaceable relative to the gripper bearing.
  • the first engagement element is advantageously rigidly connected to a carrier element of the boom coupling part, on which the gripper bearing is also arranged.
  • the gripper can be actuated hydraulically. In this way, the number of movable and hydraulically operable components of the quick coupling system with a gripper can be reduced to a minimum.
  • the form-fitting element and/or the second engagement element can be fixed rigidly to the attachment.
  • the form-fitting element and the second engagement element cannot be displaced relative to one another.
  • the form-fitting element and the second engagement element can either be arranged on a common carrier element of the add-on coupling part, which is fixed to the add-on coupling part or can directly be connected to the attachment, for example, by a screw or welded connection.
  • the form-locking element tapers from a form-locking element end that is aligned in the direction of the gripper when the add-on coupling part is arranged as intended on the boom coupling part , to support a centering movement of the form-fitting element when closing the gripper.
  • the form-fitting element is designed to taper conically from the end of the form-fitting element, so that the conically shaped form-fitting element end section can easily slide along an inner surface of the gripping arm when the gripping arms are closed.
  • the object stated at the outset is also achieved by an excavator with a quick coupling system as described above, the boom coupling part being arranged on the boom in such a way that the gripper is arranged on a side of the boom facing away from a driver's cab of the excavator.
  • the quick coupling system or the boom coupling part is connected to the boom of the excavator via a tilt rotator.
  • the boom coupling part is rigidly fastened to the boom.
  • the quick coupling system 1 has a boom coupling part 4 arranged on a boom 2 of an excavator 3 and an add-on coupling part 6 arranged on an attachment 5 .
  • the boom coupling part 4 is hydraulically connected to an unillustrated hydraulic system of the excavator 3 .
  • the extension coupling part 4 has a first engagement element 7 designed in the form of a bolt, which can be brought into engagement with a second engagement element 8 of the add-on coupling part 6 in a form-fitting manner.
  • the second engagement element 8 has two hooks 9 spaced apart from one another, which grip the bolt-shaped first engagement element 7 in a form-fitting manner when the outrigger coupling part 4 is arranged as intended on the add-on coupling part 6 .
  • the boom coupling part 4 has a hydraulically actuable locking element 10 which is arranged at a distance from the first engagement element 7 and is designed as a gripper 11 .
  • the add-on coupling part 6 has a spaced-apart from the second engagement element 8 arranged positive-locking element 12, as in the figures 2 and 3 shown protrudes into a gripping area 13 of the gripper 11 when the first 7 and the second engagement element 8 are in engagement with one another as intended.
  • the gripper 11 has two gripper arms 15 mounted in a gripper bearing 14 such that they can be hydraulically pivoted relative to one another.
  • the gripping area 13 is formed between the gripping arms 15 .
  • the first engagement element 7 and the gripper bearing 14 are rigidly arranged on a carrier element 16 of the boom coupling part 4 .
  • the second engagement element 8 and the form-fitting element 12 are welded to the attachment 5 .
  • the form-fitting element 12 is designed to taper from a form-fitting element end 17 in order to support a centering movement of the form-fitting element 12 when the gripper 11 is closed.

Description

Die Erfindung betrifft ein Schnellkupplungssystem zur lösbaren Befestigung von Anbaugeräten an einem Hydraulikbagger, wobei das Schnellkupplungssystem ein an einem Ausleger des Hydraulikbaggers anordnenbares und hydraulisch mit einem Hydrauliksystem des Baggers verbindbares Auslegerkupplungsteil und mindestens ein an einem Anbaugerät anordnenbares Anbaukupplungsteil aufweist, wobei das Auslegerkupplungsteil ein hydraulisch betätigbares Verriegelungselement aufweist, das formschlüssig mit einem Formschlusselement des Anbaukupplungsteils in Eingriff bringbar ist und wobei das Auslegerkupplungsteil ein beabstandet zu dem Verriegelungselement angeordnetes erstes Eingriffselement aufweist, das formschlüssig mit einem beabstandet zu dem Formschlusselement angeordneten zweiten Eingriffselement des Anbaukupplungsteils in Eingriff bringbar ist.The invention relates to a quick-coupling system for the detachable attachment of attachments to a hydraulic excavator, the quick-coupling system having a boom coupling part that can be arranged on a boom of the hydraulic excavator and connected hydraulically to a hydraulic system of the excavator, and at least one add-on coupling part that can be arranged on an attachment, the boom coupling part having a hydraulically actuatable locking element which can be positively engaged with a positive locking element of the add-on coupling part and wherein the boom coupling part has a first engagement element which is arranged at a distance from the locking element and which can be positively engaged with a second engagement element of the add-on coupling part which is arranged at a distance from the positive locking element.

Derartige Schnellkupplungssysteme sind aus dem Stand der Technik hinreichend bekannt und erlauben einen zügigen Wechsel der unterschiedlichen und für den Hydraulikbagger zur Verfügung stehenden Anbaugeräte wie beispielsweise Tieflöffel, Sieblöffel und Hydraulikhammer. Um mit den aus dem Stand der Technik bekannten Schnellkupplungssystemen ein Anbaugerät mit dem Hydraulikbagger verbinden zu können, wird das an dem Ausleger des jeweiligen Baggers angeordnete Auslegerkupplungsteil zu dem Anbaugerät verlagert, so dass das erste Eingriffselement und das zweite Eingriffselement formschlüssig miteinander in Eingriff stehen. Anschließend werden das Verriegelungselement und das Formschlusselement durch eine entsprechende Verlagerung des Auslegerkupplungsteils derart relativ zueinander ausgerichtet, dass das Verriegelungselement hydraulisch verlagert werden kann und auf diese Weise formschlüssig in das Formschlusselement eingreift.Such quick-coupling systems are well known from the prior art and allow rapid changing of the different attachments available for the hydraulic excavator, such as backhoe buckets, sieve buckets and hydraulic hammers. In order to be able to connect an attachment to the hydraulic excavator using the quick coupling systems known from the prior art, the boom coupling part arranged on the boom of the respective excavator is shifted to the attachment, so that the first engagement element and the second engagement element are positively engaged with one another. Subsequently, the locking element and the form-fitting element by a corresponding shift of the Boom coupling part aligned relative to each other in such a way that the locking element can be displaced hydraulically and in this way positively engages in the form-locking element.

Bei dem ersten Eingriffselement oder dem zweiten Eingriffselement handelt es sich üblicherweise um einen Bolzen, der aneinander gegenüberliegenden Bolzenenden an einem geeigneten Trägerelement des Auslegerkupplungsteils bzw. des Anbaukupplungsteils festgelegt ist. Das entsprechend angepasste zweite bzw. erste Eingriffselement ist üblicherweise hakenförmig ausgestaltet oder weist einen hakenförmigen Querschnitt auf, wobei der Bolzen in einer entsprechend angepassten Ausnehmung des hakenförmigen Eingriffselements angeordnet und dort formschlüssig festgelegt werden kann. Als Verriegelungselemente werden üblicherweise hydraulisch verlagerbare Bolzen eingesetzt, die in entsprechende Ausnehmungen des Formschlusselements verlagerbar sind.The first engagement member or the second engagement member is typically a pin secured at opposite pin ends to a suitable support member of the boom coupler or the add-on coupler, respectively. The correspondingly adapted second or first engagement element is usually hook-shaped or has a hook-shaped cross section, with the bolt being arranged in a correspondingly adapted recess of the hook-shaped engagement element and being able to be positively fixed there. Hydraulically displaceable bolts, which can be displaced into corresponding recesses in the positive-locking element, are usually used as locking elements.

Zudem sind aus dem Stand der Technik Schnellkupplungssysteme bekannt bei denen Greifer zum Beispiel zur Aufnahme von Baumstämmen oder Gleisen dauerhaft vorgesehen sind. Die Greifer sind dabei an dem Auslegerkupplungsteil angeordnet und können als Greifwerkzeug verwendet werden, wenn kein Anbaugerät bzw. kein Anbaukupplungsteil mit Anbaugerät mit dem Auslegerkupplungsteil verbunden ist. Die Greifer werden dabei ebenfalls hydraulisch betätigt, so dass für den Betrieb der aus dem Stand der Technik bekannten Schnellkupplungssysteme mit Greifer zwei getrennte Hydraulikversorgungen des Schnellkupplungssystems erforderlich sind. Ein derartiges Schnellkupplungssystem mit einem Greifer wird in der Druckschrift KR 101 394 863 B1 beschrieben.In addition, quick-coupling systems are known from the prior art in which grippers are permanently provided, for example for receiving tree trunks or rails. The grippers are arranged on the boom coupling part and can be used as a gripping tool when no attachment or no add-on coupling part with attachment is connected to the boom coupling part. The grippers are also actuated hydraulically, so that two separate hydraulic supplies for the quick-coupling system are required for the operation of the quick-coupling systems with grippers known from the prior art required are. Such a quick coupling system with a gripper is in the publication KR 101 394 863 B1 described.

Als Aufgabe der Erfindung wird es angesehen die aus dem Stand der Technik bekannten Schnellkupplungssysteme derart weiter zu entwickeln, dass ein möglichst einfacher Aufbau des Schnellkupplungssystems auch in Verbindung mit einem an dem Auslegerkupplungsteil angeordneten Greifer ermöglicht wird.The object of the invention is to further develop the quick-coupling systems known from the prior art in such a way that the simplest possible structure of the quick-coupling system is also made possible in connection with a gripper arranged on the boom coupling part.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass das Verriegelungselement als Greifer ausgestaltet ist und dass das Formschlusselement in einen Greifbereich des Greifers hineinragt, wenn das erste und das zweite Eingriffselement bestimmungsgemäß miteinander in Eingriff stehen, wobei der Greifer als Greifwerkzeug beispielsweise zur Aufnahme von Baumstämmen oder Gleisen vorgesehen und verwendbar ist, wenn kein Anbaukupplungsteil mit dem Auslegerkupplungsteil verbunden ist. Auf diese Weise kann auf die Verwendung eines zusätzlichen und beispielsweise bolzenförmig ausgestalteten Verriegelungselements verzichtet werden. Zudem kann das Schnellkupplungssystem mit Greifer auf diese Weise mit nur einem hydraulischen Anschluss für den Greifer betrieben werden.This object is achieved according to the invention in that the locking element is designed as a gripper and that the positive-locking element protrudes into a gripping area of the gripper when the first and the second engagement element are engaged with one another as intended, the gripper being used as a gripping tool, for example for picking up tree trunks or rails provided and usable when no attachment coupling part is connected to the boom coupling part. In this way, the use of an additional locking element designed, for example, in the form of a bolt can be dispensed with. In addition, the quick coupling system with gripper can be operated in this way with just one hydraulic connection for the gripper.

Bei dem aus dem Stand der Technik bekannten Schnellkupplungssystem mit Greifer kann der Greifer nur dann verwendet werden, wenn kein Anbaugerät an dem Auslegerkupplungsteil befestigt ist, da der Greifer bei montiertem Anbaugerät von dem Anbaugerät verdeckt wird. Bei montiertem Anbaugerät ist der Greifer daher ohne Funktion.In the prior art quick coupling system with a gripper, the gripper can only be used when no attachment is attached to the boom coupling part, since the gripper is covered by the attachment when the attachment is mounted. The gripper is therefore without function when the attachment is mounted.

Durch die erfindungsgemäße Verwendung des Greifers als Verriegelungselement wird die Funktion des Schnellkupplungssystems also nicht eingeschränkt, sondern vielmehr der bei montiertem Anbaugerät zuvor funktionslose Greifer als Verriegelungselement verwendet. Auf diese Weise kann das Schnellkupplungssystem mit Greifer deutlich einfacher und damit kostengünstig herstellbar und wartungsärmer ausgestaltet werden.The use according to the invention of the gripper as a locking element does not limit the function of the quick-coupling system, rather the gripper, which was previously inoperative when the attachment is mounted, is used as the locking element. In this way, the quick-coupling system with gripper can be designed to be significantly simpler and thus more cost-effective to produce and requires less maintenance.

Vorteilhafterweise ist erfindungsgemäß vorgesehen, dass der Greifer mindestens zwei relativ zueinander hydraulisch schwenkbar in einem Greiferlager gelagerte Greifarme aufweist, wobei der Greifbereich zwischen den Greifarm ausgebildet ist, wenn die Greifarme in einer Ausschwenkposition angeordnet sind und wobei die Greifarme an dem Formschlusselement anliegen und eine vorgegebene und in Richtung des Greiferlagers wirkende Greifkraft auf das Formschlusselement ausüben, wenn die Greifarme hydraulisch in eine Greifposition verlagert sind. Die Greifarme umschließen das Formschlusselement in dem Greifbereich und verlagern das Formschlusselement beim Schließen der Greifarme in Richtung des Greiferlagers, so dass das Formschlusselement formschlüssig an den Greifarmen und dem Greiferlager anliegt und in Richtung des Greiferlagers gedrückt wird.Advantageously, the invention provides that the gripper has at least two gripper arms mounted in a gripper bearing so that they can be hydraulically pivoted relative to one another, with the gripping area being formed between the gripper arms when the gripper arms are arranged in a pivoted-out position and with the gripper arms resting on the form-fitting element and having a predetermined and exert gripping force acting in the direction of the gripper bearing on the interlocking element when the gripper arms are hydraulically shifted into a gripping position. The gripping arms enclose the form-fitting element in the gripping area and displace the form-fitting element in the direction of the gripper bearing when the gripping arms close, so that the form-fitting element bears in a form-fitting manner on the gripper arms and the gripper bearing and is pressed in the direction of the gripper bearing.

Das Formschlusselement ist vorteilhafterweise starr mit einem Trägerelement des Anbaukupplungsteils verbunden, wobei an dem Trägerelement des Anbaukupplungsteils vorteilhafterweise ebenfalls starr das zweite Eingriffselement angeordnet ist. Das erste Eingriffselement ist vorteilhafterweise starr an einem entsprechenden Trägerelement des Auslegerkupplungsteils angeordnet, wobei auch das Greiferlager starr mit dem Trägerelement des Auslegerkupplungsteils verbunden sein kann. Vorteilhafterweise ist das Schnellkupplungssystem starr mit dem Ausleger verbunden oder wird schwenk- und/oder rotierbar über einen sogenannten Tilt-Rotator an dem Ausleger festgelegt.The positive-locking element is advantageously rigidly connected to a carrier element of the add-on coupling part, the second engagement element advantageously also being rigidly arranged on the carrier element of the add-on coupling part. The first engaging element is advantageously arranged rigidly on a corresponding support element of the boom coupling part, whereby the gripper bearing can also be rigidly connected to the support element of the boom coupling part. Advantageously, the quick-coupling system is rigidly connected to the boom or is fixed to the boom in a pivotable and/or rotatable manner via a so-called tilt rotator.

Das erste Eingriffselement ist vorteilhafterweise relativ zu dem Greiferlager unverlagerbar. Das erste Eingriffselement ist vorteilhafterweise starr mit einem Trägerelement des Auslegerkupplungsteils verbunden, an dem auch das Greiferlager angeordnet ist.The first engagement element is advantageously non-displaceable relative to the gripper bearing. The first engagement element is advantageously rigidly connected to a carrier element of the boom coupling part, on which the gripper bearing is also arranged.

Bei einer besonders vorteilhafter Ausgestaltung des erfindungsgemäßen Schnellkupplungssystems ist vorgesehen, dass ausschließlich der Greifer hydraulisch betätigbar ist. Auf diese Weise kann die Anzahl der beweglichen und hydraulisch betätigbaren Bestandteile des Schnellkupplungssystems mit Greifer auf ein Minimum reduziert werden.In a particularly advantageous embodiment of the quick-coupling system according to the invention, it is provided that only the gripper can be actuated hydraulically. In this way, the number of movable and hydraulically operable components of the quick coupling system with a gripper can be reduced to a minimum.

Vorteilhafterweise ist erfindungsgemäß vorgesehen, dass das Formschlusselement und/oder das zweite Eingriffselement starr an dem Anbaugerät festlegbar sind. Vorteilhafterweise sind das Formschlusselement und das zweite Eingriffselement relativ zueinander nicht verlagerbar. Das Formschlusselement und das zweite Eingriffselement können entweder an einem gemeinsamen Trägerelement des Anbaukupplungsteils angeordnet sein, welches an dem Anbaukupplungsteil festgelegt ist oder können direkt mit dem Anbaugerät beispielsweise durch eine Schraub- oder Schweißverbindung verbunden werden.It is advantageously provided according to the invention that the form-fitting element and/or the second engagement element can be fixed rigidly to the attachment. Advantageously, the form-fitting element and the second engagement element cannot be displaced relative to one another. The form-fitting element and the second engagement element can either be arranged on a common carrier element of the add-on coupling part, which is fixed to the add-on coupling part or can directly be connected to the attachment, for example, by a screw or welded connection.

Um das Schließen der Greifarme beim Greifen des Formschlusselements zu vereinfachen und ein Verkanten des Formschlusselements in dem Greifbereich zu vermeiden, ist erfindungsgemäß vorgesehen, dass das Formschlusselement von einem bei bestimmungsgemäßer Anordnung des Anbaukupplungsteils an dem Auslegerkupplungsteil in Richtung des Greifers ausgerichteten Formschlusselementendes her sich verjüngend ausgestaltet ist, um eine Zentrierbewegung des Formschlusselements beim Schließen des Greifers zu unterstützen. Vorteilhafterweise ist das Formschlusselement von dem Formschlusselementende her konisch verjüngend ausgestaltet, so dass der konisch geformte Formschlusselementendabschnitt beim Schließen der Greifarme einfach entlang einer Greifarminnenfläche gleiten kann.In order to simplify the closing of the gripping arms when gripping the form-locking element and to prevent the form-locking element from jamming in the gripping area, it is provided according to the invention that the form-locking element tapers from a form-locking element end that is aligned in the direction of the gripper when the add-on coupling part is arranged as intended on the boom coupling part , to support a centering movement of the form-fitting element when closing the gripper. Advantageously, the form-fitting element is designed to taper conically from the end of the form-fitting element, so that the conically shaped form-fitting element end section can easily slide along an inner surface of the gripping arm when the gripping arms are closed.

Erfindungsgemäß wird die eingangs gestellte Aufgabe auch durch einen Bagger mit einem wie voranstehend beschriebenen Schnellkupplungssystem gelöst, wobei das Auslegerkupplungsteil derart an dem Ausleger angeordnet ist, dass der Greifer auf einer einer Fahrerkabine des Baggers abgewandten Seite des Auslegers angeordnet ist.According to the invention, the object stated at the outset is also achieved by an excavator with a quick coupling system as described above, the boom coupling part being arranged on the boom in such a way that the gripper is arranged on a side of the boom facing away from a driver's cab of the excavator.

Vorteilhafterweise ist erfindungsgemäß vorgesehen, dass das Schnellkupplungssystem bzw. das Auslegerkupplungsteil über einen Tilt-Rotator mit dem Ausleger des Baggers verbunden ist. Es ist aber auch möglich und erfindungsgemäß vorgesehen, dass das Auslegerkupplungsteil starr an dem Ausleger befestigt ist.It is advantageously provided according to the invention that the quick coupling system or the boom coupling part is connected to the boom of the excavator via a tilt rotator. However, it is also possible and provided according to the invention that the boom coupling part is rigidly fastened to the boom.

Weitere vorteilhafte Ausgestaltungen des erfindungsgemäßen Schnellkupplungssystems werden anhand des in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert.Further advantageous configurations of the quick-coupling system according to the invention are explained in more detail with reference to the exemplary embodiment illustrated in the drawing.

Es zeigt:

  • Figur 1 eine schematisch dargestellte Seitenansicht eines an einem Ausleger eines Baggers angeordneten Auslegerkupplungsteils sowie eines an einem Anbaugerät angeordneten Anbaukupplungsteils, wobei das Auslegerkupplungsteil mit dem Anbaukupplungsteil nicht verbunden ist,
  • Figur 2 eine schematisch ausschnittsweise dargestellte Seitenansicht des in Figur 1 gezeigten Schnellkupplungssystems, wobei das Auslegerkupplungsteil und das Anbaukupplungsteil bestimmungsgemäß miteinander in Eingriff gebracht sind und
  • Figur 3 eine schematisch ausschnittsweise dargestellte Vorderansicht des Figur 2 gezeigten Schnellkupplungssystems.
It shows:
  • figure 1 a schematically illustrated side view of a boom coupling part arranged on a boom of an excavator and of an attachment coupling part arranged on an attachment, the boom coupling part not being connected to the attachment coupling part,
  • figure 2 a side view of the in figure 1 shown quick coupling system, wherein the boom coupling part and the attachment coupling part are intended to be engaged with each other and
  • figure 3 a schematic fragmentary front view of the figure 2 shown quick coupling system.

In den Figuren 1 bis 3 wird ein Schnellkupplungssystem 1 dargestellt. Das Schnellkupplungssystem 1 weist ein an einem Ausleger 2 eines Baggers 3 angeordnetes Auslegerkupplungsteil 4 und ein an einem Anbaugerät 5 angeordnetes Anbaukupplungsteil 6 auf. Das Auslegerkupplungsteil 4 ist hydraulisch mit einem nicht dargestellten Hydrauliksystem des Baggers 3 verbunden.In the Figures 1 to 3 a quick coupling system 1 is shown. The quick coupling system 1 has a boom coupling part 4 arranged on a boom 2 of an excavator 3 and an add-on coupling part 6 arranged on an attachment 5 . The boom coupling part 4 is hydraulically connected to an unillustrated hydraulic system of the excavator 3 .

Das Auslegerkupplungsteil 4 weist ein erstes bolzenförmig ausgestaltetes Eingriffselement 7 auf, das formschlüssig mit einem zweiten Eingriffselement 8 des Anbaukupplungsteils 6 in Eingriff bringbar ist. Das zweite Eingriffselement 8 weist zwei beabstandet zueinander angeordnete Haken 9 auf, die das bolzenförmig ausgestaltete erste Eingriffselement 7 formschlüssig umgreifen, wenn das Auslegerkupplungsteil 4 an dem Anbaukupplungsteil 6 bestimmungsgemäß angeordnet ist.The extension coupling part 4 has a first engagement element 7 designed in the form of a bolt, which can be brought into engagement with a second engagement element 8 of the add-on coupling part 6 in a form-fitting manner. The second engagement element 8 has two hooks 9 spaced apart from one another, which grip the bolt-shaped first engagement element 7 in a form-fitting manner when the outrigger coupling part 4 is arranged as intended on the add-on coupling part 6 .

Das Auslegerkupplungsteil 4 weist ein beabstandet zu dem ersten Eingriffselement 7 angeordnetes hydraulisch betätigbares Verriegelungselement 10 auf, welches als Greifer 11 ausgebildet ist. Das Anbaukupplungsteil 6 weist ein beabstandet zu dem zweiten Eingriffselement 8 angeordnetes Formschlusselement 12 auf, das wie in den Figuren 2 und 3 dargestellt in einen Greifbereich 13 des Greifers 11 hineinragt, wenn das erste 7 und das zweite Eingriffselement 8 bestimmungsgemäß miteinander in Eingriff stehen.The boom coupling part 4 has a hydraulically actuable locking element 10 which is arranged at a distance from the first engagement element 7 and is designed as a gripper 11 . The add-on coupling part 6 has a spaced-apart from the second engagement element 8 arranged positive-locking element 12, as in the figures 2 and 3 shown protrudes into a gripping area 13 of the gripper 11 when the first 7 and the second engagement element 8 are in engagement with one another as intended.

Der Greifer 11 weist zwei relativ zueinander hydraulisch schwenkbar in einem Greiferlager 14 gelagerte Greifarme 15 auf. Der Greifbereich 13 ist zwischen den Greifarmen 15 ausgebildet.The gripper 11 has two gripper arms 15 mounted in a gripper bearing 14 such that they can be hydraulically pivoted relative to one another. The gripping area 13 is formed between the gripping arms 15 .

Das erste Eingriffselement 7 und das Greiferlager 14 sind starr an einem Trägerelement 16 des Auslegerkupplungsteils 4 angeordnet. Das zweite Eingriffselement 8 und das Formschlusselement 12 sind an dem Anbaugerät 5 angeschweißt.The first engagement element 7 and the gripper bearing 14 are rigidly arranged on a carrier element 16 of the boom coupling part 4 . The second engagement element 8 and the form-fitting element 12 are welded to the attachment 5 .

Das Formschlusselement 12 von einem Formschlusselementende 17 her sich verjüngend ausgestaltet, um eine Zentrierbewegung des Formschlusselements 12 beim Schließen des Greifers 11 zu unterstützen.The form-fitting element 12 is designed to taper from a form-fitting element end 17 in order to support a centering movement of the form-fitting element 12 when the gripper 11 is closed.

Claims (7)

  1. Quick-coupling system (1) for detachable fastening of accessory equipment (5) to a hydraulic excavator (3), wherein the quick-coupling system (1) comprises an arm coupling part (4) which can be arranged on an arm (2) of the hydraulic excavator (3) and can be hydraulically connected to a hydraulic system of the excavator (3), and at least one accessory device coupling part (6) which can be arranged on an accessory equipment (5), wherein the arm coupling part (4) comprises a hydraulically-actuatable locking element (10), which can be brought into engagement in a form-fitting manner with a form-fitting element (12) of the accessory equipment coupling part (6), and wherein the arm coupling part (4) comprises a first engagement element (7) which is arranged so as to be spaced apart from the locking element (10), which engagement element can be brought into engagement, in a form-fitting manner, with a second engagement element (8) of the accessory equipment coupling part (6) arranged so as to be spaced apart from the form-fitting element (12), characterised in that the locking element (10) is designed as a gripper (11), and in that the form-fitting element (12) protrudes into a gripping region (13) of the gripper (11) when the first (7) and the second engagement element (8) are engaged with one another as intended, wherein the gripper is provided and can be used as a gripping tool, for example for accommodating tree trunks or rail tracks, if no accessory coupling part is connected to the arm coupling part.
  2. Quick-coupling system (1) according to claim 1, characterised in that the gripper (11) comprises at lest two gripper arms (15) mounted in a gripper bearing (14) so as to be hydraulically pivotable relative to one another, wherein the gripping region (14) is formed between the gripper arms (15) when the gripper arms (15) are arranged in a pivoted-out position, and wherein the gripper arms (15) rest on the form-fitting element (12) and exert a predefined gripping force, acting in the direction of the gripper bearing (14), on the form-fitting element (12), when the gripper arms (15) are hydraulically mounted in a gripping position.
  3. Quick-coupling system (1) according to claim 2, characterised in that the first engagement element (7) is nondisplaceable relative to the gripper bearing (14).
  4. Quick-coupling system (1) according to any of the preceding claims, characterised in that exclusively the gripper (11) is hydraulically actuatable.
  5. Quick-coupling system (1) according to any of the preceding claims, characterised in that the form-fitting element (12) and/or the second engagement element (8) can be secured on the accessory equipment (5).
  6. Quick-coupling system (1) according to any of the preceding claims, characterised in that the form-fitting element (12) is configured so as to taper from a form-fitting element end (17) which, in the intended arrangement of the accessory coupling part (6) on the arm coupling part (4), is oriented in the direction of the gripper (11), in order to assist a centring movement of the form-fitting element (12) when closing the gripper (11).
  7. Excavator (3) comprising a quick-coupling system (1) according to any of the preceding claims, wherein the arm coupling part (4) is arranged on the arm (2) such that the gripper (11) is arranged on a side of the arm (2) facing away from a driver's cab of the excavator (3).
EP20709504.3A 2019-02-20 2020-02-20 Quick-coupling system having a gripper as locking element Active EP3927903B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019104321.2A DE102019104321A1 (en) 2019-02-20 2019-02-20 Quick coupling system
PCT/EP2020/054507 WO2020169746A1 (en) 2019-02-20 2020-02-20 Quick-coupling system having a gripper as locking element

Publications (2)

Publication Number Publication Date
EP3927903A1 EP3927903A1 (en) 2021-12-29
EP3927903B1 true EP3927903B1 (en) 2022-11-30

Family

ID=69770862

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20709504.3A Active EP3927903B1 (en) 2019-02-20 2020-02-20 Quick-coupling system having a gripper as locking element

Country Status (3)

Country Link
EP (1) EP3927903B1 (en)
DE (1) DE102019104321A1 (en)
WO (1) WO2020169746A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101353244B1 (en) * 2013-08-16 2014-01-20 김수철 An excavator having removable forefinger
KR101394863B1 (en) * 2013-03-25 2014-05-13 이소정 A grab link device for fastening the bucket

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9101150A (en) * 1991-07-02 1993-02-01 Verachtert Bv COUPLER.
JP2693336B2 (en) * 1992-02-26 1997-12-24 株式会社クボタ Mounting device for tractor and work implement
US5472308A (en) * 1994-04-26 1995-12-05 Somero; Nick J. Grapple mount
JP2006037379A (en) * 2004-07-23 2006-02-09 Soushiyu Aikawa Adaptor for attachment connection and disconnection
GB2471720A (en) * 2009-07-10 2011-01-12 Patrick Roache Excavator quick hitch mechanism
US9611616B2 (en) * 2014-12-24 2017-04-04 Shun Maruyama Bucket attaching structure of construction machine and construction machine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101394863B1 (en) * 2013-03-25 2014-05-13 이소정 A grab link device for fastening the bucket
KR101353244B1 (en) * 2013-08-16 2014-01-20 김수철 An excavator having removable forefinger

Also Published As

Publication number Publication date
WO2020169746A1 (en) 2020-08-27
EP3927903A1 (en) 2021-12-29
DE102019104321A1 (en) 2020-08-20

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