EP3927903B1 - Système d'accouplement rapide comprenant un grappin comme élément de verrouillage - Google Patents

Système d'accouplement rapide comprenant un grappin comme élément de verrouillage 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
Prior art date
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Application number
EP20709504.3A
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German (de)
English (en)
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EP3927903A1 (fr
Inventor
Thomas Jansen
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Individual
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Individual
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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.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Shovels (AREA)
  • Earth Drilling (AREA)

Claims (7)

  1. Système d'accouplement rapide (1) pour la fixation amovible d'appareils rapportés (5) sur un excavateur hydraulique (3), dans lequel le système d'accouplement rapide (1) présente une pièce d'accouplement de flèche (4) pouvant être disposée sur une flèche (2) de l'excavateur hydraulique (3) et pouvant être reliée de manière hydraulique à un système hydraulique de l'excavateur (3) et au moins une pièce d'accouplement rapportée (6) pouvant être disposée sur un appareil rapporté (5), dans lequel la pièce d'accouplement de flèche (4) présente un élément de verrouillage (10) pouvant être fixé de manière hydraulique, qui peut être amené en prise par complémentarité de forme avec un élément à complémentarité de forme (12) de la pièce d'accouplement rapportée (6), et dans lequel la pièce d'accouplement de flèche (4) présente un premier élément de prise (7) disposé à distance par rapport à l'élément de verrouillage (10), qui peut être amené en prise par complémentarité de forme avec un deuxième élément de prise (8), disposé à distance par rapport à l'élément à complémentarité de forme (12), de la pièce d'accouplement rapportée (6), caractérisé en ce que l'élément de verrouillage (10) est configuré en tant que grappin (11), et que l'élément à complémentarité de forme (12) dépasse à l'intérieur d'une zone de préhension (13) du grappin (11), lorsque le premier (7) et le deuxième élément de prise (8) sont en prise l'un avec l'autre conformément à l'usage prévu, dans lequel le grappin est prévu en tant qu'outil de préhension par exemple pour réceptionner des troncs d'arbre ou des rails et peut être utilisé lorsqu'aucune pièce d'accouplement rapportée n'est reliée à la pièce d'accouplement de flèche.
  2. Système d'accouplement rapide (1) selon la revendication 1, caractérisé en ce que le grappin (11) présente au moins deux bras de préhension (15) montés de manière à pouvoir pivoter hydrauliquement l'un par rapport à l'autre dans un palier de grappin (14), dans lequel la zone de préhension (14) est réalisée entre les bras de préhension (15) lorsque les bras de préhension (15) sont disposés dans une position de sortie par pivotement et dans lequel les bras de préhension (15) reposent sur l'élément à complémentarité de forme (12) et exercent sur l'élément à complémentarité de forme (12) une force de préhension prédéfinie et agissant en direction du palier de grappin (14) lorsque les bras de préhension (15) sont déplacés de manière hydraulique dans une position de préhension.
  3. Système d'accouplement rapide (1) selon la revendication 2, caractérisé en ce que le premier élément de préhension (7) ne peut pas être déplacé par rapport au palier de grappin (14) .
  4. Système d'accouplement rapide (1) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'exclusivement le grappin (11) peut être actionné de manière hydraulique.
  5. Système d'accouplement rapide (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément à complémentarité de forme (12) et/ou le deuxième élément de préhension (8) peuvent être fixés de manière rigide sur l'appareil rapporté (5).
  6. Système d'accouplement rapide (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément à complémentarité de forme (12) est configuré de manière à se rétrécir depuis une extrémité d'élément à complémentarité de forme (17) orientée en direction du grappin (11) sur la pièce d'accouplement de flèche (4) lors de la disposition conforme à l'usage prévu de la pièce d'accouplement rapportée (6) pour soutenir un déplacement de centrage de l'élément à complémentarité de forme (12) lors de la fermeture du grappin (11).
  7. Excavateur (3) avec un système d'accouplement rapide (1) selon l'une quelconque des revendications précédentes, dans lequel la pièce d'accouplement de flèche (4) est disposée de telle manière sur la flèche (2) que le grappin (11) est disposé sur un côté, opposé à une cabine de conducteur de l'excavateur (3), de la flèche (2).
EP20709504.3A 2019-02-20 2020-02-20 Système d'accouplement rapide comprenant un grappin comme élément de verrouillage Active EP3927903B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019104321.2A DE102019104321A1 (de) 2019-02-20 2019-02-20 Schnellkupplungssystem
PCT/EP2020/054507 WO2020169746A1 (fr) 2019-02-20 2020-02-20 Système d'accouplement rapide comprenant un grappin comme élément de verrouillage

Publications (2)

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

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EP20709504.3A Active EP3927903B1 (fr) 2019-02-20 2020-02-20 Système d'accouplement rapide comprenant un grappin comme élément de verrouillage

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EP (1) EP3927903B1 (fr)
DE (1) DE102019104321A1 (fr)
WO (1) WO2020169746A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101353244B1 (ko) * 2013-08-16 2014-01-20 김수철 굴삭기용 착탈식 집게장치
KR101394863B1 (ko) * 2013-03-25 2014-05-13 이소정 버킷 체결용 집게 링크 장치

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9101150A (nl) * 1991-07-02 1993-02-01 Verachtert Bv Koppelstuk.
JP2693336B2 (ja) * 1992-02-26 1997-12-24 株式会社クボタ トラクタと作業機の装着装置
US5472308A (en) * 1994-04-26 1995-12-05 Somero; Nick J. Grapple mount
JP2006037379A (ja) * 2004-07-23 2006-02-09 Soushiyu Aikawa アタッチメント脱着用アダプター
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 (ko) * 2013-03-25 2014-05-13 이소정 버킷 체결용 집게 링크 장치
KR101353244B1 (ko) * 2013-08-16 2014-01-20 김수철 굴삭기용 착탈식 집게장치

Also Published As

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

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