EP0594486B1 - Schnellkupplungsvorrichtung für Erdbewegungsmaschine - Google Patents

Schnellkupplungsvorrichtung für Erdbewegungsmaschine Download PDF

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Publication number
EP0594486B1
EP0594486B1 EP19930402546 EP93402546A EP0594486B1 EP 0594486 B1 EP0594486 B1 EP 0594486B1 EP 19930402546 EP19930402546 EP 19930402546 EP 93402546 A EP93402546 A EP 93402546A EP 0594486 B1 EP0594486 B1 EP 0594486B1
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EP
European Patent Office
Prior art keywords
equipment
finger
coupling device
quick
bolt
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
EP19930402546
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English (en)
French (fr)
Other versions
EP0594486A1 (de
Inventor
Jean-Pierre Dorguin
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Individual
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Individual
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Filing date
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Application filed by Individual filed Critical Individual
Publication of EP0594486A1 publication Critical patent/EP0594486A1/de
Application granted granted Critical
Publication of EP0594486B1 publication Critical patent/EP0594486B1/de
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
    • E02F3/364—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat using wedges
    • 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
    • E02F3/3645—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with auto-engagement means for automatic snap-on of the tool coupler part

Definitions

  • the present invention relates to a quick coupling device for civil engineering and handling equipment.
  • These devices generally comprise at least one hook which comes (or come) engaged in one (or more) beam and a locking member.
  • the locks are actuated, when the equipment is put in place, automatically by a spring and when they are dismantled, either manually or by a jack which acts against the spring.
  • these devices have the major drawback of not making up for the clearances which appear rapidly during use, and which increase with the matting of the parts.
  • An object of the present invention is to overcome this drawback by eliminating the use of a hydraulic power circuit for locking.
  • the device is known according to patent EP 438,931. It has a pair of hooks which engage in a beam of the tool, the locking being ensured by a cam which abuts on a crosspiece. The play is made up by the permanent application of the cam under the action of a spring.
  • the contact surfaces of the beam and the hooks are not protected and are directly in contact with the transported materials (rubble, stone, earth, etc.), which causes wear of said surfaces which causes the presence badly or not caught games.
  • the document EP 0 143 074 describes an excavator comprising a bucket picking device.
  • a receiving device is attached to the bucket and has a nose which penetrates through an opening inside a body connected to the arm of the shovel.
  • a locking mechanism inside said body has a movable wedge capable of being actuated to be inserted between the nose and the floor of the body.
  • the receiving device has an axis on which said body engages.
  • the rear wall of the body is oblique to the floor and the receiving device has an oblique wall parallel to this rear wall of the body, while the nose is connected to this parallel oblique wall.
  • This known device has several drawbacks: on the one hand, it does not ensure an automatic take-up of the play, this take-up being obtained in particular by replacing a wear plate provided between said oblique walls; on the other hand, it does not ensure automatic locking when locking, due to the fact that the locking is achieved by a member such as a screw or a hydraulic cylinder which must be controlled by an action external to the device.
  • Another object of the present invention is to obtain an automatic locking and an automatic backlash.
  • the subject of the invention is a quick coupling device for civil engineering and handling equipment fitted at the end of an arm of the machine, in which the front end of the arm has an axis of rotation.
  • defining the center of gyration of the equipment and a rod for controlling the rotation of the equipment comprising a circular conformation cooperating with a hook having a semi-circular recess, and a latch cooperating with a locking dough, characterized in that that the lock has two distinct conformations cooperating with the locking tab, the first of which ensures automatic latching during locking and the second of which ensures the automatic take-up of the clearances.
  • each flange having on the side opposite the hook a first surface element intended to come to bear on a second surface element carried by the equipment, said surface elements being inclined towards the equipment.
  • This device is characterized in that the lock comprises a finger, the end of which has two chamfers, one lower for the automatic latching of the lock in the locking tab, the other upper intended to cooperate in catching up the games.
  • the bucket 1 comprises in known manner a beam 2 for taking up forces.
  • This bucket is mounted on the end of the arm 4 of a machine by means of a yoke 5 articulated to the axis 6 of the end of said arm 4, the movements of the bucket around the end of the arm ( opening and opening of the bucket) being driven by the movement of the yoke 5, themselves controlled by a connecting rod 7 articulated to the yoke by an axis 8.
  • the yoke 5 comprises two flat flanges 9, of identical, parallel contours, joined by spacers or any equivalent member, not shown.
  • Each flange 9 has two upper openings 6 'and 8' intended for the axes of articulations 6 and 8, the side separating these openings defining the upper side 10 of the flange; in the drawing, to the right of these openings, on the front side 11, the flange has a recess 12 in the form of a semi-circular hook intended to receive the beam 2; to the left of the openings, on the rear side 13, it has a first surface element 14, flat or curved, inclined towards the bucket 1.
  • This first surface element 14 is located opposite the recess 12 so that the backlash plane in the hook, symbolized by the line 15, crosses it in its middle by forming an acute angle ⁇ .
  • the backlash plane is defined by the direction of the support force F1 of the yoke on the bar and the axis 16 of the centers of the hooks.
  • the inclination ⁇ of the surface element 14 and of the play take-up plane 15 is between 10 and 70 degrees, preferably between 35 ° and 55 °.
  • the surface element 14 makes an angle of about 45 ° with the plane 15.
  • the first surface element 14 is intended to come to bear on a second surface element 14 'present on a stud 17 carried by the bucket.
  • the inclination of the surface element 14 'relative to the bucket is such that the elements 14 and 14' are parallel when the yoke 5 comes into contact with the stud 17.
  • planar elements are provided for the surface elements 14 and 14 ′ since the clearance ⁇ is generally of very low amplitude.
  • the yoke comprises between the two flanges 9 a lock 18 which engages with a locking tab 19 carried by the bucket, on the rear side of the yoke.
  • This lock has the shape of a finger 20 which extends parallel to the direction of the force F1. It slides in a housing 21 and is pushed outwards by a spring 22.
  • the end of the finger has two chamfers, one lower 23 for latching the latch in the locking tab, the other upper 24 intended to cooperate in taking up the play.
  • the locking tab 19 has a window 25 with an opening section greater than the section of the finger so that the latter can move in the window without friction on its lateral and lower edges, and the finger is eccentric with respect to the window so that it abuts on the upper inner edge 26 of the window during locking.
  • the upper inner edge 26 of the window is inclined at an angle corresponding to the upper chamfer of the lock.
  • the locking is done by snap-fastening under the permanent action of the spring: when the clevis is put in place, the lower chamfer 23 of the finger 20 comes into contact with the upper outer edge 27 of the window.
  • the rotation of the yoke under the action of the connecting rod 7 forces the finger to retract into its housing when the lower chamfer 23 slides on the edge 27 of the window.
  • the end of the finger reaches the opening of the window, under the action of the spring the finger enters the opening and thus automatically ensures locking.
  • the position of the finger relative to the bearing surface 14 and to the window is provided so that the finger cannot penetrate completely into the opening but remains in permanent support on the upper internal edge of the window.
  • the upper chamfer 24 of the finger is inclined so as to be able to slide on this internal edge 26.
  • this inclination of the chamfer 24 makes it possible to make up for the play appearing at the bolt when the play is taken up at the level of the hooks and to avoid the reappearance of play during reverse movements of the bucket.
  • a manual control member known per se is provided: a joystick or the like.
  • a hydraulic circuit supplying a small jack 28 it is also possible to provide a hydraulic circuit supplying a small jack 28.
  • locking does not require any power, which allows the use of simple commands.
  • the take-up plane 15 'of the clearance of the finger passing through the axis of the hooks and the middle of the chamfered upper face 24 is substantially parallel to the plane of the take-up 15 passing through the axis of the hooks.
  • the two planes 15 and 15 ′ are combined.
  • FIG. 6 illustrates the variant of the invention according to which the device comprises, on the one hand the clevis described above and, on the other hand, an attachment box 33 intended to be secured to the bucket 1.
  • the box comprises between two parallel blanks 30, on the front side a bar (or boss) 31 intended to engage in the hooks 12, and on the rear side a locking tab 19.
  • Each blank 30 having on the rear an extension 31 towards the yoke has a surface element 14 'oriented towards the yoke, intended to receive the bearing surface 14 of the attachment yoke.
  • This box is a base which is fixed by any known means, for example by welding, on the back of the bucket. It constitutes a simple means allowing the transformation of any existing equipment for the adaptation of a quick coupling device according to the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Shovels (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)

Claims (10)

  1. Schnellkupplungsvorrichtung für ein Werkzeug einer Erdbewegungsmaschine, das am Ende eines Armes (4) der Maschine angelenkt ist, wobei das vordere Ende des Armes eine Drehachse (6), die den Drehmittelpunkt für das Werkzeug festlegt, und eine Steuerstange (7) für die Drehung des Werkzeugs umfaßt, mit einer kreisförmigen Formgebung (2, 31), die mit einem Haken (12) zusammenwirkt, der eine halbkreisförmige Ausnehmung ausbildet, und mit einem Riegel (18), der mit einer Verriegelungsklaue (19) zusammenwirkt, dadurch gekennzeichnet, daß der Riegel (18) mit zwei unterschiedlichen Formgebungen (23, 24) versehen ist, die mit der Verriegelungsklaue (19) zusammenwirken, wobei deren erste (23) das automatische Einklinken bei der Verriegelung sicherstellt und die zweite (24) einen automatischen Spielausgleich gewährleistet.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Verriegelungsklaue (19) ein Fenster (25) aufweist, und daß der Riegel (18) bei der Verriegelung gegen einen Rand (26) des Fensters anliegt.
  3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die beiden unterschiedlichen Formgebungen (23, 24) in Form von Schrägkanten ausgebildet sind.
  4. Schnellkupplungsvorrichtung für ein Werkzeug einer Erdbewegungsmaschine, das am Ende eines Armes (4) der Maschine angelenkt ist, wobei das vordere Ende des Armes eine Drehachse (6), die den Drehmittelpunkt für das Werkzeug festlegt, und eine Steuerstange (7) für die Drehung des Werkzeugs umfaßt, mit
    - einem Gehäuse (5), das von zwei parallelen Flanschen gebildet wird, die am Ende des Armes getragen und verschwenkbar montiert sind, wobei jeder eine halbkreisförmige Ausnehmung (12) aufweist, die einen Haken bildet, der zum Eingriff mit einer Rundfläche (2, 31) des Werkzeugs dient,
    - und einem Riegel (18), der den Haken (12) gegenüberliegt und zum Eingriff mit einer von dem Werkzeug getragenen Verriegelungsklaue (19) dient,
    wobei jeder Flansch (9) auf seiner den Haken gegenüberliegenden Seite ein erstes Oberflächenelement (14) aufweist, das zur Anlage auf einem zweiten, von dem Werkzeug getragenen Oberflächenelement (14') dient, wobei diese Oberflächenelemente zum Werkzeug geneigt sind, dadurch gekennzeichnet, daß der Riegel einen Fingen (20) aufweist, dessen eines Ende mit zwei Schrägflächen versehen ist, nämlich einer unteren (23) zum automatischen Einklinken des Riegels an der Verriegelungsklaue, während die andere, nämlich die obere (24), für ein Zusammenwirken zum Spielausgleich dient.
  5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die Verriegelungsklaue ein Fenster (25) aufweist, dessen Öffnungsquerschnitt größer als der Querschnitt des Fingers (20) ist, und daß der Finger exzentrisch zum Fenster derart liegt, daß er während des Verriegelns gegen den oberen Rand (26) des Fensters anliegt.
  6. Schnellkupplungsvorrichtung nach Anspruch 4 oder 5, dadurch gekennzeichnet, daß die obere Schrägfläche (24) des Fingers um einen Winkel (θ) im Bereich von 0° bis etwa 100 geneigt ist.
  7. Schnellkupplungsvorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß der obere Innenrand (26) des Fensters um einen Winkel (θ) entsprechend der Neigung der oberen Schrägfläche (24) des Riegels geneigt ist.
  8. Schnellkupplungsvorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die Ebene (15') des Spielausgleichs in den Haken im wesentlichen die Mitte (29) der oberen Schrägfläche (24) durchquert.
  9. Schnellkupplungsvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Finger ein manuell betätigbares Entriegelungsorgan aufweist.
  10. Schnellkupplungsvorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß der Finger ein von einem Hydraulikkreis gesteuertes Entriegelungsorgan aufweist.
EP19930402546 1992-10-23 1993-10-15 Schnellkupplungsvorrichtung für Erdbewegungsmaschine Expired - Lifetime EP0594486B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9212763A FR2697302B1 (fr) 1992-10-23 1992-10-23 Dispositif d'attache rapide pour équipement d'engin de génie civil et de manutention.
FR9212763 1992-10-23

Publications (2)

Publication Number Publication Date
EP0594486A1 EP0594486A1 (de) 1994-04-27
EP0594486B1 true EP0594486B1 (de) 1997-01-15

Family

ID=9434870

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930402546 Expired - Lifetime EP0594486B1 (de) 1992-10-23 1993-10-15 Schnellkupplungsvorrichtung für Erdbewegungsmaschine

Country Status (3)

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EP (1) EP0594486B1 (de)
DE (1) DE69307455T2 (de)
FR (1) FR2697302B1 (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT2322U3 (de) * 1998-05-19 1999-04-26 Baumaschinentechnik Ges M B H Schnellwechselvorrichtung für bagger mit verriegelungssicherung
FR2785952B1 (fr) * 1998-11-12 2001-04-06 Alain Husson Attache rapide pour fixer un outil a l'extremite du bras d'un chargeur ou analogue
IT1310182B1 (it) * 1999-03-02 2002-02-11 Mantovanibenne S R L Dispositivo per il bloccaggio e lo sbloccaggio rapidi di attrezzi abracci operatori.
FR2809779B1 (fr) 2000-05-31 2002-07-19 Alain Husson Dispositif de securite pour attache rapide destinee a fixer un outil a l'extremite du bras d'un chargeur ou analogue
AT9344U1 (de) * 2006-03-27 2007-08-15 Baumaschinentechnik Ges M B H Anbauplatte für eine schnellwechselvorrichtung
DK2038485T3 (da) * 2006-06-27 2012-08-13 Oscar Meier Ag Koblingsindretning og jordflytningsmaskine med en sådan koblingsindretning
SI22502A (sl) * 2007-03-13 2008-10-31 JoĹľef BAJEC Hitra spojka za menjavo bagerskih orodij
IES20070351A2 (en) * 2007-05-14 2008-04-16 Geith Patents Ltd A coupler for the working arm(s) of an excavator or the like
FR2939453B1 (fr) * 2008-12-09 2019-04-05 Ateliers De Constructions Du Beaujolais Dispositif de connexion a un coupleur rapide et godet equipe de ce dispositif
FR2944533B1 (fr) * 2009-04-17 2011-04-22 Morin Dispositif de connexion, coupleur d'attache rapide et ensemble de connexion.
AT508631A1 (de) 2009-08-21 2011-03-15 Perwein Baumaschinen Systeme Gmbh Kupplungsvorrichtung
DE102012107567B4 (de) * 2012-08-17 2015-03-19 Lehnhoff Hartstahl Gmbh & Co. Kg Schnellwechsler, Verfahren zum Betreiben eines Schnellwechslers und Schnellwechselvorrichtung
FR3014125B1 (fr) * 2013-12-04 2017-01-27 Xavier Pingret Dispositif d'attache rapide d'un outil de genie civil ou de manutention

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH661305A5 (de) * 1983-09-15 1987-07-15 Stury Fredi Ag Bagger mit einer einrichtung zum wahlweisen befestigen des baggerloeffels am baggerausleger.
FR2609075B1 (fr) * 1986-12-26 1991-08-30 Poncin Gilles Dispositif d'attache rapide pour equipements d'engins de genie civil et de manutention

Also Published As

Publication number Publication date
FR2697302A1 (fr) 1994-04-29
EP0594486A1 (de) 1994-04-27
FR2697302B1 (fr) 1994-12-30
DE69307455T2 (de) 1997-08-21
DE69307455D1 (de) 1997-02-27

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