EP0448788B1 - Dispositif d'accouplement rapide pour excavateur - Google Patents

Dispositif d'accouplement rapide pour excavateur Download PDF

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Publication number
EP0448788B1
EP0448788B1 EP90122462A EP90122462A EP0448788B1 EP 0448788 B1 EP0448788 B1 EP 0448788B1 EP 90122462 A EP90122462 A EP 90122462A EP 90122462 A EP90122462 A EP 90122462A EP 0448788 B1 EP0448788 B1 EP 0448788B1
Authority
EP
European Patent Office
Prior art keywords
pistons
pressure
locking
housing
adapter
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.)
Expired - Lifetime
Application number
EP90122462A
Other languages
German (de)
English (en)
Other versions
EP0448788A1 (fr
Inventor
Reinhard Stenger
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.)
Dr Ing HCF Porsche AG
Original Assignee
Dr Ing HCF Porsche AG
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 Dr Ing HCF Porsche AG filed Critical Dr Ing HCF Porsche AG
Publication of EP0448788A1 publication Critical patent/EP0448788A1/fr
Application granted granted Critical
Publication of EP0448788B1 publication Critical patent/EP0448788B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E02F3/3627—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with a hook and a longitudinal locking element
    • 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
    • E02F3/3631—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with a hook and a transversal locking element
    • 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

Definitions

  • the invention relates to a quick-change device according to the preamble of claim 1.
  • a quick coupling for connecting an implement to a shovel loader which comprises a pair of bolts which can be brought into or out of engagement with holes in the implement.
  • the bolts are actuated via linkage and bellcrank, which are connected to a compressed air cylinder.
  • a quick-change device with coaxially arranged locking bolts is known from FR-A 2 304 726. These can be moved in a housing by means of scissor levers, which can be adjusted by a controllable hydraulic cylinder.
  • a device is known from GB-A 2 132 584, the locking bolts of which are held coaxially in a housing and which can be displaced into positions for releasing and locking via a respective hydraulic cylinder. Furthermore, from DE-U 9 001 617 a changing device with two coaxially arranged locking bolts is known, which are only hydraulically adjustable. From EP-A 273 828 a locking device with a bolt is known which has a conical head at the end and can be moved into and out of a corresponding opening by means of controllable hydraulic pressure.
  • the object of the invention is to provide a quick-change device which ensures a reliable connection between the implement and the articulated arm.
  • the main advantages achieved by the invention are that the locking bolts are in an interlocking position by an interposed single compression spring and pressurize the locking bolts or the pistons of the locking bolts accordingly only for adjustment into an unlocking position will. This ensures that the system is solely under the tension of the compression spring in the locking position and thus this position is not endangered if the pressure circuit fails.
  • the locking elements consisting of coaxially arranged pistons with locking bolts in a cylindrical housing, can be accommodated in a space-saving manner in an adapter and can be dimensioned according to the requirements with regard to the absorption of forces and moments.
  • the hydraulic control circuit is designed so that the pistons can be retracted against the tension of the compression spring.
  • the pistons could also be pressurized in the effective direction of the compression spring.
  • a unit consisting of a pair of pistons with two locking pins or two pairs of pistons with four locking pins can be used.
  • the pistons are adjusted via an actuatable multi-way valve of the control unit, which can be adjusted manually or electrically using a switch.
  • the implement to be connected to the articulated arm is hung on the adapter, for which purpose this comprises a hook which engages positively around a cam of the implement.
  • a quick-change device 1 for an implement 2, such as for a backhoe, is housed in an adapter 3, which is connected to a coupling rod 4 and an articulated arm 5.
  • the locking elements 6 are fastened in the adapter 3, these being arranged between the legs 7 and 8 of the bucket 2 for holding.
  • the locking element 6 comprises in a cylindrical housing 9 coaxially arranged pistons 10 and 11 with locking bolts 12 and 13 formed at the ends. Between the two pistons 10 and 11 a compression spring 14 is arranged, which tries to displace the pistons in the arrow directions 16.
  • Such a locking element 6 is shown in more detail in FIG. 4, with the locking bolt 12 in a retracted unlocking position R and the further locking bolt 13 in an extended locking position A for the sake of simplicity in a drawing.
  • the locking bolts 12 and 13 together always have the same position A or R.
  • the pistons 10 and 11 are connected to a hydraulic pressure circuit of a control unit 15 in such a way that the pistons can be displaced from the locking position A into the unlocking position R against the direction of the arrow 16.
  • a pressure chamber 17 into each of which a pressure line 18, 18a opens.
  • This pressure chamber 17 is delimited on the one hand by a guide sleeve 19 and on the other hand by a pressure flange 20, 20a of the respective piston.
  • the compression spring 14 is supported at the end in blind bores 21 and 22 of the pistons 10 and 11. It penetrates a central transverse wall 23 on which the pressure flanges 20, 20a of the pistons 10 and 11 are supported in the unlocking position R.
  • FIG. 8 a first possible hydraulic circuit diagram for the control of the pistons 10 and 11 in the unlocking position R is shown schematically.
  • This control unit 15 essentially comprises a line 30 guided by a pump 28 via a multi-way valve 29, from which lines 18 and 18a branch to the pressure chambers 17 of the pistons 10 and 11.
  • FIG. 9 a second possible hydraulic circuit diagram for the control of the pistons 10 and 11 in the unlocking position R and for support in the locking position A is shown schematically.
  • the control unit 15a comprises two outgoing pressure lines 30 and 30a from the multi-way valve 29a.
  • the first line 30 has lines 18 and 18a branching off to the pressure spaces 17.
  • the second line 30a has a branching line 31 which leads in a space 33 between the pistons 10 and 11 and supports a movement of the pistons into a locking position A, ie the pistons are displaced in the effective direction of the spring 14.
  • the recess in the connecting rib in the adapter 3 (Fig. 3) between the two bores 25 is designed so that it enables a pre-fixation during the coupling process as a counterpart to the stiffening profile on the bucket 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Operation Control Of Excavators (AREA)
  • Earth Drilling (AREA)
  • Shovels (AREA)
  • Manipulator (AREA)
  • Lubricants (AREA)

Claims (7)

  1. Dispositif de changement rapide pour une excavatrice, en vue de changer des outils de travail, fixés amovibles sur un adaptateur (3) d'un bras basculant (5), par l'intermédiaire d'éléments de verrouillage (6) comportant des boulons de blocage (12, 13) et maintenus sur le bras basculant (5) de manière à pouvoir pivoter autour d'un axe horizontal, les éléments de verrouillage (6) à actionner au moyen d'une unité de commande, étant composés de deux pistons individuels (10, 11), disposés coaxialement et coopérants dans un carter (9), en constituant chacun du côté extrémité, sur leur extrémité libre, un boulon de blocage (12, 13), pouvant être réglé, par commande hydraulique, en une position de déverrouillage (R), caractérisé par le caractéristiques suivantes :
    a) un ressort de pression précontraint (14), au moyen duquel les boulons de blocage (12, 13) sont réglables en une position de verrouillage (A) et maintenus dans cette position, est disposé entre les boulons de blocage (12, 13),
    b) les boulons de blocage (12, 13) présentent une bride de pression (10, 20a) dont le diamètre leur est supérieur et qui prend appui sur une paroi transversale (23) médiane du carter (9),
    c) une enceinte de pression (17), dans laquelle débouche une conduite de pression (18, 18a) de l'unité de commande (15; 15a), est constituée entre la bride de pression (20, 20a) et une douille de guidage (19) délimitant le carter (9).
  2. Dispositif selon la revendication 1, caractérisé en ce que deux éléments de verrouillage (6), disposés l'un à côté de l'autre, sont disposés dans l'adaptateur (3) et fixés à l'intérieur de celui-ci par des vis, l'adaptateur (3) étant entouré par des branches (7, 8) d'un outil de travail, dans lesquelles sont ménagés des perçages (24 et 25) placés en correspondance avec les boulons de blocage (12 et 13).
  3. Dispositif selon la revendication 1, caractérisé en ce que l'adaptateur (3) comprend des crochets (26), en prise avec des ergots (27) de l'outil (2), ainsi qu'un élément de verrouillage (6), disposé au voisinage d'un point de tourillonnement d'une bielle de couplage (4) et s'engageant dans des perçages (24, 25) ménagés dans les branches de l'outil de travail (2).
  4. Dispositif selon la revendication 1 ou l'une des revendications précédentes, caractérisé en ce que, dans la position de déverrouillage (R), les pistons (10, 11) sont appuyés sur une paroi transversale (23), traversée par le ressort de pression (14) unique, du carter (9).
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que l'unité de commande (15) comprend, dans une conduite de pression (30); une soupape multivoies (29) pouvant être commandée, présentant les différentes conduites de pression (18, 18a), en ramification et allant aux différentes enceintes à pression (17) des pistons individuels (10, 11) montés coaxialement, dans chaque carter (9).
  6. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que l'unité de commande (15a) présente des première et deuxième conduite de pression (30, 30a), partant d'une soupape multivoies (29a) pouvant être commandée, la première conduite de pression (30) comprenant des conduites de ramification (18, 18a) allant aux enceintes de pression (17) des pistons (10, 11) disposés coaxialement, et la deuxième conduite de pression (30a) présentant une conduite (31) débouchant dans une enceinte intermédiaire (33) prévue entre les deux pistons (10, 11).
  7. Dispositif selon la revendication 6, caractérisé en ce que l'enceinte à pression (33) constituée entre les deux pistons (10 et 11) est réalisée de façon que le déplacement des pistons (10, 11) pour passer à une position de verrouillage (A) puisse être assisté.
EP90122462A 1990-03-30 1990-11-26 Dispositif d'accouplement rapide pour excavateur Expired - Lifetime EP0448788B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4010224A DE4010224C2 (de) 1990-03-30 1990-03-30 Schnellwechselvorrichtung
DE4010224 1990-03-30

Publications (2)

Publication Number Publication Date
EP0448788A1 EP0448788A1 (fr) 1991-10-02
EP0448788B1 true EP0448788B1 (fr) 1994-11-09

Family

ID=6403398

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90122462A Expired - Lifetime EP0448788B1 (fr) 1990-03-30 1990-11-26 Dispositif d'accouplement rapide pour excavateur

Country Status (6)

Country Link
US (1) US5125788A (fr)
EP (1) EP0448788B1 (fr)
JP (1) JPH04222724A (fr)
AT (1) ATE114010T1 (fr)
DE (2) DE4010224C2 (fr)
NO (1) NO302249B1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4417401A1 (de) * 1994-05-18 1995-11-30 Thomas Dipl Ing Ostermeyer Geräteträger
WO1998053152A1 (fr) * 1997-05-21 1998-11-26 Accima Ab Dispositif de couplage amovible d'un outil au bras de commande d'une excavatrice
EP1057941A2 (fr) * 1999-05-11 2000-12-06 Daemo Engineering Co., Ltd. Agencement d'accouplement pour fixer de maniere liberable un dispositif d'excavation a une excavatrice

Families Citing this family (32)

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DE4223734C2 (de) * 1992-07-18 1996-04-18 Orenstein & Koppel Ag Schnellwechselvorrichtung
FR2702526B1 (fr) * 1993-03-10 1995-05-24 Koehl Jean Marie Gerard Rene Dispositif d'assemblage en rotation d'un bras ou analogue avec et entre deux branches d'une pièce en forme de fourche.
US5486084A (en) * 1993-06-07 1996-01-23 Raymond F. Pitman Multiple purpose material handling and working apparatus
DE4408386C2 (de) * 1994-03-12 1996-07-04 Orenstein & Koppel Ag Hydraulisch betätigte Verriegelungsvorrichtung für Schnellwechsler an Bau- und Arbeitsmaschinen
US5634735A (en) * 1995-06-07 1997-06-03 Wain-Roy, Inc. Tool coupler
DE19806057C2 (de) * 1998-02-13 2002-11-28 Franz Wimmer Baumaschinenadapter
DE29903774U1 (de) * 1999-03-02 1999-09-30 Liebherr Hydraulikbagger Kupplung zum pendelnden Anhängen eines Werkzeugs an den Stiel eines Baggers oder eine andere Handhabungseinrichtung
NZ519487A (en) * 1999-05-15 2004-06-25 Ward Attachments Ltd A Connection apparatus
US7975944B2 (en) * 1999-10-15 2011-07-12 John R. Ramun Modular system for connecting attachments to a construction machine
US6994284B1 (en) 1999-10-15 2006-02-07 Ramun John R Multiple tool attachment system
US6776571B2 (en) * 2000-10-12 2004-08-17 James M. Lemieux Fork attachment for backhoe
KR100430064B1 (ko) * 2001-05-18 2004-05-03 한국기계연구원 굴삭기용 퀵 커플러
JP2005504198A (ja) * 2001-09-26 2005-02-10 ハンウー ティーエヌシー コーポレーション 重機用アタッチメントカップリング装置
ITPR20040090A1 (it) * 2004-12-14 2005-03-14 Pmi Padana Macchine Ind Spa Apparato idraulico e procedimento per l'inserimento/estrazione di spine su bracci spinati di macchine movimento terra.
JP4867371B2 (ja) * 2006-02-01 2012-02-01 コベルコ建機株式会社 ピン連結装置
FR2900170A1 (fr) * 2006-04-21 2007-10-26 Innovation Equipement Sarl Dispositif d'accouplement hydraulique d'un godet au bout d'un bras de pelleteuse par verrouillage, deverrouillage lateral
US7690880B2 (en) * 2006-04-25 2010-04-06 Clark Equipment Company Locking device for hydraulic attachment interface
US7984575B2 (en) * 2007-07-05 2011-07-26 Caterpillar Inc. Quick coupler assembly
JP4912280B2 (ja) * 2007-11-21 2012-04-11 株式会社室戸鉄工所 アタッチメントカプラ
CA2651295A1 (fr) * 2009-01-27 2010-07-27 Nye Manufacturing Ltd. Dispositif d'accouplement permettant de raccorder un godet ou un outil a une fleche
EP2683879B1 (fr) 2011-03-10 2014-12-31 Clark Equipment Company Système de couplage d'outil pour machine électrique
US8974137B2 (en) 2011-12-22 2015-03-10 Caterpillar Inc. Quick coupler
US9217235B2 (en) 2012-05-30 2015-12-22 Caterpillar Inc. Tool coupler system having multiple pressure sources
US8869437B2 (en) 2012-05-30 2014-10-28 Caterpillar Inc. Quick coupler
US8684623B2 (en) 2012-05-30 2014-04-01 Caterpillar Inc. Tool coupler having anti-release mechanism
AT513332A1 (de) * 2012-08-31 2014-03-15 Wacker Neuson Linz Gmbh Vorrichtung zum Kuppeln von einem Trägergerät und einem Werkzeug zugeordneten Medienleitungen
US9228314B2 (en) 2013-05-08 2016-01-05 Caterpillar Inc. Quick coupler hydraulic control system
FR3019197A1 (fr) * 2014-03-26 2015-10-02 Morin Systeme d’engagement d’un ensemble d’attache rapide
GB2544746A (en) * 2015-11-24 2017-05-31 Caterpillar Work Tools Bv Apparatus and method for assembling work tool to a machine
US11805738B2 (en) 2020-04-24 2023-11-07 Paul E. Schmelz Sod roller terminal attachment for excavator
US11952738B2 (en) 2020-09-18 2024-04-09 Great Plains Manufacturing, Inc. Attachment coupler
CN115262670A (zh) * 2022-07-14 2022-11-01 宁波吉威熔模铸造有限公司 一种便于装配的工程机械铲斗连接组件

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4417401A1 (de) * 1994-05-18 1995-11-30 Thomas Dipl Ing Ostermeyer Geräteträger
WO1998053152A1 (fr) * 1997-05-21 1998-11-26 Accima Ab Dispositif de couplage amovible d'un outil au bras de commande d'une excavatrice
EP1057941A2 (fr) * 1999-05-11 2000-12-06 Daemo Engineering Co., Ltd. Agencement d'accouplement pour fixer de maniere liberable un dispositif d'excavation a une excavatrice

Also Published As

Publication number Publication date
NO302249B1 (no) 1998-02-09
NO911268L (no) 1991-10-01
US5125788A (en) 1992-06-30
DE4010224C2 (de) 1994-05-19
DE59007696D1 (de) 1994-12-15
NO911268D0 (no) 1991-03-27
JPH04222724A (ja) 1992-08-12
ATE114010T1 (de) 1994-11-15
EP0448788A1 (fr) 1991-10-02
DE4010224A1 (de) 1991-10-02

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