EP1475481B1 - Werkzeugschnellwechselvorrichtung für Bagger - Google Patents

Werkzeugschnellwechselvorrichtung für Bagger Download PDF

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Publication number
EP1475481B1
EP1475481B1 EP04291178A EP04291178A EP1475481B1 EP 1475481 B1 EP1475481 B1 EP 1475481B1 EP 04291178 A EP04291178 A EP 04291178A EP 04291178 A EP04291178 A EP 04291178A EP 1475481 B1 EP1475481 B1 EP 1475481B1
Authority
EP
European Patent Office
Prior art keywords
jaw
cams
support
hooks
making
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
EP04291178A
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English (en)
French (fr)
Other versions
EP1475481A1 (de
Inventor
René Sieffert
Serge Morin
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.)
MORIN
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MORIN
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Publication date
Application filed by MORIN filed Critical MORIN
Publication of EP1475481A1 publication Critical patent/EP1475481A1/de
Application granted granted Critical
Publication of EP1475481B1 publication Critical patent/EP1475481B1/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
    • E02F3/3622—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 locking element acting on a pin
    • 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
    • E02F3/3672—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat where disengagement is effected by a mechanical lever or handle

Definitions

  • the present invention relates to a device for the quick attachment of a tool, bucket or the like to the end of the articulated arm of an excavating machine or hydraulic shovel.
  • the device taught is a coupler which allows the fixing of a bucket on the end of the articulated arm of the machine without the intervention of a person other than the driver of the machine, and without it having to leave his cabin.
  • the coupler is attached to the arm articulated by an axis and the rods present on the arm by a second axis, and comprises two hooks coming to rest on two complementary shapes present on the bucket.
  • the coupler comprises a locking system made by one or more spring-loaded rotary cams which tighten a shaft present on the bucket, a shaft of the coupler serving to support the locking cams resting on a cradle present on the bucket.
  • Such a device is reliable and powerful but must take into account the wide variety of dimensions and different kinematics of the articulated arms of hydraulic excavators. This requires the manufacturer to offer a coupler adapted to each model of excavator, which imposes large inventory of parts to be able to respond to orders within acceptable time.
  • the present invention aims to provide a coupler having the same operating principle and the same coupling kinematics, but a different design for faster production and more economical.
  • a quick attachment device of a tool at the end of the articulated arm of a hydraulic excavator having a lower part, called jaw, for the taking of a bucket, an upper part, called support, connected to the arm of the shovel by means of fixing, the jaw having at one of its ends a camshaft pivotally connected to at least one cam, and at its other end two semicircular hooks interconnected by at least one transverse bridge, the lower part and the upper part of the device being two separate parts rigidly connected by fixing means and characterized in that the jaw is obtained from a one-piece casting, having two bosses at the end opposite the hooks to be traversed by two holes to serve as supports to the camshaft, a transverse bridge being located at the junction of the right part and the curved part of the jaw.
  • the device is characterized in that the inner surface of the hooks is a surface of revolution of isosceles trapezoidal section whose small base constitutes the minimum diameter, thus materializing a ramp facilitating cooperation with two complementary surfaces present on a beam at the top of the bucket
  • the device is characterized in that the support is composed of two identical cut plates which each comprise two holes intended for the mounting of two axes, one of connection with the articulated arm, the other connecting rods .
  • the bridge close to the junction of the right portion of the jaw with the curved portion of the hooks, serves to maintain substantially parallel to each other the ears that constitute the support.
  • the device is characterized in that the jaw and the support are connected by a plurality of screws by means of threaded holes present on the surfaces of the jaw in contact with the support, the support being provided with two linked soles. two plates by welding, said soles having holes for the fixing screws, thus making the support-jaw assembly removable.
  • the device is characterized in that the jaw and its support are bonded by welding.
  • the device is characterized in that the locking cams are each connected to one of the two ends of a cylindrical torsion spring wound around the cam support shaft, the other end of the spring being connected to said shaft, the action of the springs tending to rotate the cams in the locking direction.
  • the device is characterized in that the locking cams comprise an open cylindrical housing with an axis parallel to the axis of rotation of the cams, allowing the introduction of an unlocking lever to counteract the action of the spring (s) and thus unlock the cams.
  • each cam comprises a hydraulic unlocking device for automatic unlocking of the cams.
  • the device is characterized in that the upper part of the device comprises two eyelets for handling loads by the carrier.
  • the invention relates to a quick attachment device of a tool will now be described in an alternative embodiment wherein the device consists of a jaw (1) and a support (2).
  • the invention will now be described with reference to figures 1a and1b, which represent the jaw of the coupler.
  • the jaw (1) has a straight portion and at one end two coaxial semicircular hooks (11a, 11b) and axes perpendicular to the longitudinal plane of symmetry of the jaw (1).
  • the hooks have an inner surface (110) which is a surface of revolution of isosceles trapezoidal section, the small base of the trapezoid forming the inside of the surface of revolution.
  • the hooks are rigidly connected to each other by two transverse bridges (16, 17).
  • the first bridge (16) is close to the junction of the right part of the jaw with the curved portion of the hooks
  • the second bridge (17) is at the end of the jaw opposite the hooks.
  • Near this end are two coaxial bosses (12a, 12b), to be drilled to support the camshaft (31).
  • Each boss (12a, 12b) is connected to the corresponding hook (11a, 11b) by a T-shaped section (13a, 13b), ensuring good rigidity of the assembly.
  • Each section (13a, 13b) has on its upper face a face (14a) close to the bridge (17) and a face (14b) close to the bridge (16).
  • These four upper surfaces (14a, 14b) are coplanar and are machined (drilled and tapped) in the case where the jaw and the support are fixed by screws.
  • the jaw has two other surfaces (14c), threaded machined for the bolted support, near the bridge (16) performing the same functions as the other surfaces (14).
  • the bridge (16) stiffens the entire casting, the surfaces (14a, 14b, 14c) for fixing the support (2).
  • FIGS 2a and 2b show the device in an alternative embodiment where the connection between the jaw (1) and the support (2) is made by welding.
  • the constituent elements of the support (2) it is constituted two ears (21), which are cut plates, having two holes (22) for the passage of the axes of the connecting rod (27a) and the articulated arm (27b).
  • bosses (220) are arranged around the fastening holes (22) so as to ensure a satisfactory guide length of the axis of the connecting rod and the axis of the articulated arm.
  • the ears (21) also have two eyelets (23) close to the end opposite to that fixed to the arm of the shovel, and are intended for the attachment of loads during handling work.
  • the two ears (21) are in this case directly welded to the upper face of the jaw, as shown ( fig 2b ).
  • FIGS 3a and 3b show the device in an alternative embodiment where the connection between the jaw (1) and the support (2) is formed by screws.
  • This embodiment has the advantage of providing a removable device, and which allows the manufacturer a separate storage of the jaws and brackets for a final assembly that can be deferred according to the needs.
  • the support has substantially the same shape as in the previous variant, and the two ears (21), provided with holes (22) and eyelets (23) are joined by two soles (24) and (25), welded to both ears (21) and arranged to materialize the complementary shape of all of the upper surfaces (14a, 14b) and (14c) of the jaw (1).
  • the fixing screws (5) tighten the lower faces of the flanges (24, 25) of the support (2) through a plurality of smooth holes, against the faces (14a, 14b, 14c) of the jaw (1). machined and tapped to receive said screws. Once the screws are in place, the coupler is operational.
  • the coupler is first approached to the bucket (4) by presenting the hooks (11a, 11b) which come to rest on two complementary shapes (41a, 41b) present on a beam (40) at the top of the bucket (4) and the coupler is then pivoted to fold down the opposite end of the hooks (11a, 11b) in order to support the camshaft (31) in a cradle (43) formed by two recesses on two parallel lugs (42) present at the rear of the bucket (4) At the same time, a shaft (44) comes into contact with the cams (3), thus causing their rotation until the cams (3) can pass below the shaft (44).
  • cams (3) which are each connected to one of the two ends of a cylindrical torsion spring (32) wound around the cam support shaft (31), the other end spring being connected to said shaft, the action of the springs tending to rotate the cams in the locking direction; the cams coming to rest on the shaft (44).
  • Disassembly of the bucket requires to carry out in reverse order these operations, having previously unlocked the cams (3) by means of a lever inserted into an eyelet (33) present on each cam thus making it possible to counteract the effort exerted by the cam springs.
  • a hydraulic system may be added to the cams so as to make the automatic unlocking.
  • the support may be mounted with anti-friction rings, four in number and interposed on each side between the connecting rods and the lugs (21) and between the articulated arm and the ears (21). .

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)
  • Earth Drilling (AREA)
  • Component Parts Of Construction Machinery (AREA)

Claims (9)

  1. Schnellbefestigungsvorrichtung eines Werkzeugs am Ende des Gelenkarms (27b) eines Hydraulikbaggers, die einen unteren Abschnitt, Klaue (1) genannt, der dazu bestimmt ist, einen Eimer (4) zu erfassen, einen oberen Abschnitt, Halter (2) genannt, der mit dem Arm des Baggers durch Befestigungsmittel verbunden ist, aufweist, wobei die Klaue (1) an einem ihrer Enden eine Nockenwelle (31) in Drehzapfenverbindung mit mindestens einem Nocken (3) und an ihren anderen Ende zwei halbrunde Haken (11a, 11b) aufweist, die miteinander durch mindestens eine Querbrücke (16, 17) verbunden sind, wobei der untere Abschnitt und der obere Abschnitt der Vorrichtung zwei verschiedene Teile sind, die durch Befestigungsmittel starr miteinander verbunden sind und dadurch gekennzeichnet, dass die Klaue (1) aus einem Blockgussstück gefertigt ist, das an dem Ende, das den Haken (11 a, 11 b) entgegengesetzt ist, zwei Höcker (12a, 12b) aufweist, die dazu bestimmt sind, von zwei Bohrungen durchquert zu sein, um der Nockenwelle (31) als Halter zu dienen, wobei mindestens eine Querbrücke (16, 17) erlaubt, die vier Vorsprünge (12a, 12b, 11a, 11b) fest zu verbinden, wobei sich eine der Brücken (16) im zentralen Abschnitt der Klaue (1) zwischen den Flächen (14b, 14c) befindet, wobei sich die andere Brücke (17) in der Nähe der Flächen (14a) befindet.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Innenfläche (110) der Haken (11a, 11b) eine Rotationsfläche mit gleichschenkligem trapezförmigem Querschnitt ist, deren kleine Basis den Mindestdurchmesser darstellt, die eine konische Form ausbildet, die die Annäherung der Flächen (41 a, 41 b) des Trägers (40) des Eimers (4) in Richtung der Flächen (110) der Klaue (1) erleichtert.
  3. Vorrichtung nach einem der Ansprüche 1 bis 2, dadurch gekennzeichnet, dass der Halter (2) aus zwei geschnittenen Platten (21) zusammengesetzt ist, die jeweils zwei Bohrungen (22) aufweisen, die dazu bestimmt sind, die Verbindungsachsen mit dem Pleuel (27a) einerseits und mit dem Gelenkarm (27b) andererseits aufzunehmen, wobei die Platten (21) weiterhin zwei Ösen (23) aufweisen, die dazu bestimmt sind, die eigentlichen Vorrichtungen zur Handhabung von Lasten durch das Traggerät aufzunehmen.
  4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Klaue (1) und ihr Halter (2) durch Schweißen verbunden sind, wobei die geformten und durch mindestens eine der Brücken (16, 17) erreichten Griffe (21) dank der Steifheit der Klaue (1) in Position gehalten werden.
  5. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Befestigungsschrauben (5) die Unterseiten der Sohlen (24, 25) des Halters (2) durch eine Vielzahl glatter Löcher gegen die Seiten (14a, 14b, 14c) der Klaue (1) drücken, die bearbeitet sind und ein Gewinde haben, um die Schrauben aufzunehmen und somit eine demontierbare Verbindung bilden, wobei die Sohlen durch Schweißen mit den Platten (21) verbunden sind.
  6. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Verriegelungsnocken (3) jeweils mit einem der Enden mindestens einer zylindrischen Torsionsfeder (32), die um die den Nocken haltende Welle (31) gewickelt ist, verbunden sind, wobei das andere Ende der Feder mit der Klaue (1) verbunden ist, wobei die Federn dahingehend wirken, die Nocken in Richtung der Verriegelung zu drehen.
  7. Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Verriegelungsnocken (3) eine offene zylindrische Aufnahme (33) mit paralleler Achse zur Rotationsachse der Nocken (3) aufweisen, die es erlaubt, einen Hebel anzulenken, um eine Kraft auszuüben, die der Kraft der Feder(n) entgegenwirkt und die Entriegelung der Vorrichtung erlaubt.
  8. Vorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Verriegelungsnocken (3) eine offene zylindrische Aufnahme (33) mit paralleler Achse zur Rotationsachse der Nocken (3) aufweisen, die es erlaubt, dort einen Hebel einzuführen, um eine Kraft auszuüben, die der Wirkung der Feder (32) entgegenwirkt und damit die Entriegelung der Nocken erlaubt.
  9. Vorrichtung nach einem der Ansprüche 1 bis 5 und 7, dadurch gekennzeichnet, dass jeder Nocken (3) eine hydraulische Entriegelungsvorrichtung aufweist, die eine automatische Entriegelung der Nocken (3) erlaubt.
EP04291178A 2003-05-09 2004-05-07 Werkzeugschnellwechselvorrichtung für Bagger Expired - Lifetime EP1475481B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0305664A FR2854644B1 (fr) 2003-05-09 2003-05-09 Dispositif d'attache rapide d'un outil de machine d'excavation
FR0305664 2003-05-09

Publications (2)

Publication Number Publication Date
EP1475481A1 EP1475481A1 (de) 2004-11-10
EP1475481B1 true EP1475481B1 (de) 2012-02-15

Family

ID=32982395

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04291178A Expired - Lifetime EP1475481B1 (de) 2003-05-09 2004-05-07 Werkzeugschnellwechselvorrichtung für Bagger

Country Status (5)

Country Link
EP (1) EP1475481B1 (de)
AT (1) ATE545738T1 (de)
ES (1) ES2381107T3 (de)
FR (1) FR2854644B1 (de)
PT (1) PT1475481E (de)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2657596B1 (fr) * 1990-01-26 1992-04-24 Morin Freres Dispositif pour fixer un godet, ou analogue, a l'extremite du bras d'un chargeur.
US5382110A (en) * 1992-12-30 1995-01-17 Esco Corporation Quick coupling device
FR2713681B1 (fr) * 1993-12-14 1996-01-05 Morin Freres Dispositif de commande de la palette d'éjection d'un godet de pelleteuse.
US6139212A (en) * 1998-02-11 2000-10-31 Rockland Manufacturing Co. Coupler for excavating machines and the like having fixed and moveable jaws
BE1012100A4 (fr) * 1998-03-02 2000-05-02 Monsin Ladm Atel Attache rapide concue pour le montage et le demontage des bacs de grue.
DE29810750U1 (de) * 1998-06-16 1998-10-01 Atlas Weyhausen GmbH, 27751 Delmenhorst Schnellwechseleinrichtung

Also Published As

Publication number Publication date
FR2854644B1 (fr) 2006-05-12
EP1475481A1 (de) 2004-11-10
PT1475481E (pt) 2012-04-17
ES2381107T3 (es) 2012-05-23
ATE545738T1 (de) 2012-03-15
FR2854644A1 (fr) 2004-11-12

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