FR2849008A1 - Universal gripper for digger arm comprises fork with teeth fixed to arm so it interacts with bucket to grip long or awkward loads - Google Patents

Universal gripper for digger arm comprises fork with teeth fixed to arm so it interacts with bucket to grip long or awkward loads Download PDF

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Publication number
FR2849008A1
FR2849008A1 FR0216251A FR0216251A FR2849008A1 FR 2849008 A1 FR2849008 A1 FR 2849008A1 FR 0216251 A FR0216251 A FR 0216251A FR 0216251 A FR0216251 A FR 0216251A FR 2849008 A1 FR2849008 A1 FR 2849008A1
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France
Prior art keywords
arm
bucket
gripper
excavator
gripping
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Granted
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FR0216251A
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French (fr)
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FR2849008B1 (en
Inventor
Thierry Brosse
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ARCADIE CT
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ARCADIE CT
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Priority to FR0216251A priority Critical patent/FR2849008B1/en
Publication of FR2849008A1 publication Critical patent/FR2849008A1/en
Application granted granted Critical
Publication of FR2849008B1 publication Critical patent/FR2849008B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C3/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith and intended primarily for transmitting lifting forces to loose materials; Grabs
    • B66C3/14—Grabs opened or closed by driving motors thereon
    • B66C3/16—Grabs opened or closed by driving motors thereon by fluid motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C3/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith and intended primarily for transmitting lifting forces to loose materials; Grabs
    • B66C3/02—Bucket grabs
    • 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

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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)

Abstract

The gripper, made from stainless steel, aluminium or composition material, consists of a fixed fork (2) with teeth (1) connected by a transverse bar (9). It is fitted to the end section of a digger manipulator arm (5) so that it interacts with a bucket (8) pivoted to the arm. A long or awkward load such as a tree trunk, branch or boulder can be picked up between the bucket and the gripper without the latter having to move or be equipped with a drive. In addition, the gripper can be fitted and removed quickly by means hooks (7) and a pivot pin (4).

Description

-1-1

La présente invention concerne un accessoire de levage permettant de transformer une pelleteuse traditionnelle équipée de son godet en pince de préhension par adjonction sur son bras terminal d'une pince à fourche dormante antagoniste La pince mécanique ainsi obtenue est particulièrement adaptée pour la manutention des 5 troncs d'arbres, branchages, souches, blocs de rochers Elle permet la préhension en toute sécurité de charges lourdes sans avoir recours à un grappin de manutention motorisé et sans démonter le godet.  The present invention relates to a lifting accessory making it possible to transform a traditional excavator equipped with its bucket into gripping pliers by adding on its terminal arm an antagonistic dead fork clamp The mechanical clamp thus obtained is particularly suitable for handling the 5 trunks trees, branches, stumps, boulders It allows the safe handling of heavy loads without having to use a motorized handling grab and without dismantling the bucket.

La manutention des matériaux tels que des souches ou des rochers avec des pelleteuses sur les chantiers est traditionnellement effectuée à l'aide de fourches spécialisées ou de grappins motorisés, qui sont montés en remplacement du godet de la pelleteuse Ces opérations sont assez lentes à exécuter lorsqu'elles obligent le manutentionnaire à fixer manuellement ces accessoires en remplacement du godet.  The handling of materials such as stumps or rocks with backhoes on construction sites is traditionally carried out using specialized forks or motorized grabs, which are mounted to replace the backhoe bucket These operations are quite slow to perform when 'they require the handler to manually attach these accessories to replace the bucket.

Pour leur part, les grappins mécaniques motorisés nécessitent d'être raccordés au système hydraulique de la pelleteuse, ce qui complique la commande et les 15 flexibles sont alors très exposés aux ruptures.  For their part, the motorized mechanical grapples require to be connected to the hydraulic system of the excavator, which complicates the control and the hoses are then very exposed to ruptures.

De ce fait, il n'existait pas de moyen de préhension qui assure une prise rapide et sre de souches d'arbres, de déchets de taille ou de rochers au moyen du godet d'une pelleteuse sans que celle-ci ne soit déséquipée de son godet de terrassement pour être remplacé par un grappin et sans que ces accessoires de manutention ne lui permette de conserver sa fonctionnalité de pelletage.  As a result, there was no gripping means which ensured rapid and secure picking up of tree stumps, pruning waste or rocks using the bucket of a backhoe without it being stripped of its earthmoving bucket to be replaced by a grapple and without these handling accessories allowing it to retain its shoveling functionality.

La pince de préhension universelle adaptable sur le bras de toute pelleteuse à godet, selon l'invention permet de remédier à ces inconvénients Elle se caractérise essentiellement en ce qu'elle comporte une pince en forme de fourche constituée d'une pluralité de dents, disposées de façon que le mouvement de fermeture du godet oppose 25 un effort de serrage antagoniste sur cette pince fixe Sous cette action, la géométrie particulière de la pince de préhension opère une fermeture totale par appui des dents sur la barre ( 9) ce qui assure un bon maintien de la charge tout au long du levage et garantit la sreté du mouvement.  The universal gripping pliers adaptable to the arm of any bucket excavator, according to the invention overcomes these drawbacks. It is essentially characterized in that it comprises a fork-shaped clamp consisting of a plurality of teeth, arranged so that the closing movement of the bucket opposes an opposing clamping force on this fixed clamp Under this action, the particular geometry of the gripping clamp operates a total closure by pressing the teeth on the bar (9) which ensures a good load maintenance throughout the lifting and guarantees a safe movement.

Selon une première caractéristique, la pince de préhension ( 2) qui est fixée au 30 bras ( 5) de la pelleteuse ne prend pas la place de l'outil et conserve ainsi à la pelleteuse sa fonctionnalité permanente d'engin de terrassement complétée par celle d'un engin de levage à grappin L'effort de fermeture du godet ( 8) qui se reporte sur la pince dormante antagoniste ( 2) assure un serrage à la demande en permettant alors la préhension de charges difficiles. -2  According to a first characteristic, the gripper (2) which is fixed to the arm (5) of the excavator does not take the place of the tool and thus retains the excavator its permanent functionality of earthmoving machine supplemented by that of a grapple lifting device The closing force of the bucket (8) which is carried over to the counteracting gripper (2) ensures tightening on demand while allowing the gripping of difficult loads. -2

Elle comporte selon une deuxième caractéristique, un dispositif de fixation ( 6) et ( 7) adaptable sur les bras terminaux de toutes les pelleteuses, se composant d'une platine rapportée ( 6) et de deux crochets ( 7), et d'un verrouillage supérieur constitué par un axe de fixation ( 3) qui permet d'assujettir la pince de préhension ( 2) au bras ( 5) de la pelleteuse et de la rendre amovible.  According to a second characteristic, it comprises a fixing device (6) and (7) adaptable to the terminal arms of all the excavators, consisting of an attached plate (6) and two hooks (7), and a upper locking constituted by a fixing pin (3) which makes it possible to subject the gripper (2) to the arm (5) of the excavator and to make it removable.

Selon une caractéristique additionnelle du dispositif selon l'invention, une goupille ( 4) disposée sur l'axe de fixation ( 3) permet de maintien de la pince ( 2) sur la bras ( 5) de la pelleteuse et assure le verrouillage de l'axe en position Le fait de retirer manuellement cette goupille ( 4) et d'exercer de façon concomitante un déplacement 10 transversal de l'axe supérieur ( 3) de maintien de la pince ( 2) a pour effet de libérer la pince de préhension qui pivote alors sur ses crochets inférieurs ( 7) sans tomber au sol.  According to an additional characteristic of the device according to the invention, a pin (4) arranged on the fixing axis (3) allows the clamp (2) to be held on the arm (5) of the excavator and ensures the locking of the axis in position The fact of manually removing this pin (4) and of exercising concomitantly a transverse movement of the upper axis (3) for holding the clamp (2) has the effect of releasing the gripper which then pivots on its lower hooks (7) without falling to the ground.

Cette disposition particulière: facilite l'opération manuelle de montage qui s'opère en positionnant dans un premier temps les crochets ( 7) de la pince de préhension sur le bras de la pelleteuse, puis dans un second temps en clavetant l'axe de verrouillage ( 3) à l'aide d'une goupille ( 4) de sécurité, et sécurise les opérations manuelles de démontage en évitant la chute de la pince ( 2) lors du retrait de l'axe supérieur ( 3).  This particular arrangement: facilitates the manual mounting operation which takes place by first positioning the hooks (7) of the gripper on the backhoe arm, then secondly by keying the locking pin (3) using a safety pin (4), and secures the manual disassembly operations by avoiding the fall of the clamp (2) during the withdrawal of the upper axis (3).

Selon un autre mode d'exécution de cette caractéristique, la fixation de la pince 20 de préhension ( 2) au bras ( 5) de la pelleteuse peut être réalisée au moyen d'une commande mécanique automatique ou d'un vérin commandé.  According to another embodiment of this characteristic, the attachment of the gripper 20 (2) to the arm (5) of the excavator can be carried out by means of an automatic mechanical control or a controlled jack.

Selon un autre mode d'exécution de cette caractéristique, la fixation de la pince de préhension ( 2) au bras ( 5) de la pelleteuse peut être une fixation universelle, réalisée par des colliers dormants (non représentés ici) rapportés sur ce bras et servant 25 de points de fixation à la pince de préhension amovible.  According to another embodiment of this characteristic, the attachment of the gripping pliers (2) to the arm (5) of the excavator can be a universal attachment, produced by standing collars (not shown here) attached to this arm and serving as fixing points for the removable gripper.

Les avantages et les caractéristiques de la présente invention ressortiront plus clairement dans la description qui suit et qui se rapporte au dessin d'ensemble annexé FIG 1 En référence à ce dessin, on peut voir que lorsqu'on libère la goupille ( 4), l'axe de verrouillage ( 3) est libre de se déplacer en translation jusqu'à son retrait, libérant 30 alors la pince de préhension amovible ( 2) munie ici de deux dents de fourche ( 1).  The advantages and characteristics of the present invention will emerge more clearly in the description which follows and which relates to the overall drawing appended FIG 1 With reference to this drawing, it can be seen that when the pin (4) is released, the the locking pin (3) is free to move in translation until it is withdrawn, thereby releasing the removable gripper (2) here provided with two fork teeth (1).

On notera FIG 2 que les dents ( 1) de la pince de préhension ( 2), sont placées de telle sorte qu'elles appuient avec la barre ( 9) sur les dents du godet ( 8) de la pelleteuse, cette disposition permettant d'améliorer la tenue de la charge à manutentionner. -3 En outre, la pince de préhension selon l'invention est d'une utilisation rapide et simple, puisque la pelleteuse ainsi équipée de ce dispositif peut continuer à être utilisée avec son godet pour des travaux de terrassement sans nécessité de retirer la pince.  It will be noted FIG 2 that the teeth (1) of the gripper (2), are placed so that they bear with the bar (9) on the teeth of the bucket (8) of the excavator, this arrangement allowing '' improve the behavior of the load to be handled. -3 In addition, the gripper according to the invention is quick and simple to use, since the excavator thus equipped with this device can continue to be used with its bucket for earthworks without the need to remove the clamp.

Selon un mode particulier d'utilisation, la pince de préhension peut servir à emporter les différents godets dont le terrassier a besoin.  According to a particular mode of use, the gripping pliers can be used to carry the different buckets that the excavator needs.

Selon un mode de réalisation particulier de la fourche, la fourche ( 1) peut recevoir une seule dent pour la manutention des troncs d'arbres lorsque le godet ( 8) antagoniste de la pelleteuse est lui-même muni d'au moins deux dents.  According to a particular embodiment of the fork, the fork (1) can receive a single tooth for handling tree trunks when the antagonistic bucket (8) of the excavator is itself provided with at least two teeth.

Selon un autre mode de réalisation la fourche ( 1) peut être remplacée par une I 0 lame pleine pouvant prendre des dimensions et des formes adaptées aux opérations de terrassement et de nivellement que l'on désire réaliser.  According to another embodiment, the fork (1) can be replaced by a solid blade I 0 which can take dimensions and shapes adapted to the earthmoving and leveling operations which it is desired to carry out.

Selon un autre mode de réalisation, la pince amovible ( 2) peut être munie d'un vérin qui lui permettrait de pivoter autour de son articulation pour s'effacer de la zone de travail.  According to another embodiment, the removable clamp (2) can be provided with a jack which would allow it to pivot around its articulation in order to be erased from the working area.

Selon un autre mode de réalisation, l'ensemble de la pince de préhension ( 2) peut être réalisée en acier inoxydable, en aluminium ou en matériaux composites.  According to another embodiment, the assembly of the gripper (2) can be made of stainless steel, aluminum or composite materials.

La pince de préhension universelle selon l'invention est plus particulièrement adaptable sur les mini pelleteuse à godet Elle est particulièrement destinée à la manutention mécanisée des troncs d'arbres, des branchages, des déchets de taille, des 20 souches, au placement des enrochements dans les rocailles, à la manutention et au déroulage au sol de grands rouleaux de feutre géotextile.  The universal gripper according to the invention is more particularly adaptable on mini bucket excavators. It is particularly intended for mechanized handling of tree trunks, branches, pruning waste, stumps, placement of riprap in rock gardens, handling and unrolling large rolls of geotextile felt on the ground.

Elle est conçue pour répondre aux besoins des entreprises de parcs et jardins, paysagistes, de terrassement et travaux publics et les exploitations agricoles. -4  It is designed to meet the needs of businesses in parks and gardens, landscapers, earthmoving and public works and farms. -4

Claims (4)

Revendicationsclaims 1) Pince de préhension universelle adaptable sur les bras ( 5) de toute pelleteuse à godet pour manutentionner les charges, caractérisé en ce qu'elle comporte une demi pince dormante ( 2) rapportée sur le bras terminal ( 5) d'une pelleteuse, constituée d'une pluralité de dents ( 1) reliées par une barre ( 9), et qui oppose un effort antagoniste de préhension de la charge lorsque le godet ( 8) de la pelleteuse est actionné en position de fermeture.  1) Universal gripping pliers adaptable to the arms (5) of any bucket backhoe to handle loads, characterized in that it comprises a half standing pliers (2) attached to the terminal arm (5) of a backhoe, consisting of a plurality of teeth (1) connected by a bar (9), and which opposes an antagonistic force for gripping the load when the bucket (8) of the excavator is actuated in the closed position. 2) Dispositif selon la revendication 1 caractérisé en ce que le mouvement de préhension obtenu confère ainsi à cet ensemble la fonction nouvelle et additionnelle d'un grappin sans que la pince de préhension ( 2) ne nécessite 10 d'être doté d'un mouvement mécanique ou d'une motorisation commandée,  2) Device according to claim 1 characterized in that the gripping movement obtained thus gives this assembly the new and additional function of a grab without the gripper (2) requiring to be provided with a movement mechanical or controlled motorization, 3) Dispositif selon la revendication 2 caractérisé en ce que cette pince ( 2) est rendue amovible grâce à une fixation rapide au bras de la pelleteuse réalisée par des crochets de retenue ( 7) qui la maintiennent en pivotement lors des opérations de montage et de démontage et un axe supérieur ( 3) muni d'une 15 goupille ( 4) qui l'assujettissent au bras ( 5) de la pelleteuse,3) Device according to claim 2 characterized in that this clamp (2) is made removable by means of a quick attachment to the arm of the excavator produced by retaining hooks (7) which keep it pivoting during assembly and mounting operations. disassembly and an upper axle (3) provided with a pin (4) which subjects it to the arm (5) of the excavator, 4) Dispositif selon l'une quelconque des revendications précédentes caractérisé en ce que cette pince amovible ( 2) peut être montée sur tous les bras terminaux ( 5) de toutes pelleteuses par des colliers de fixation universels ( 6) présentant la même configuration d'accrochage de la pince, dès-lors que ces 20 colliers présentent des dimensions adaptées aux différentes sections des bras des dites pelleteuses.4) Device according to any one of the preceding claims, characterized in that this removable clamp (2) can be mounted on all the terminal arms (5) of all excavators by universal fixing collars (6) having the same configuration of attachment of the pliers, as soon as these 20 collars have dimensions adapted to the different sections of the arms of said excavators.
FR0216251A 2002-12-18 2002-12-18 UNIVERSAL GRIPPING PLIERS FOR CONSTITUTING A GRAPPLE WHEN REPORTED ON THE TERMINAL ARM OF AN EXCAVATOR HAVING ITS BUCKET Expired - Fee Related FR2849008B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0216251A FR2849008B1 (en) 2002-12-18 2002-12-18 UNIVERSAL GRIPPING PLIERS FOR CONSTITUTING A GRAPPLE WHEN REPORTED ON THE TERMINAL ARM OF AN EXCAVATOR HAVING ITS BUCKET

Applications Claiming Priority (1)

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FR0216251A FR2849008B1 (en) 2002-12-18 2002-12-18 UNIVERSAL GRIPPING PLIERS FOR CONSTITUTING A GRAPPLE WHEN REPORTED ON THE TERMINAL ARM OF AN EXCAVATOR HAVING ITS BUCKET

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FR2849008A1 true FR2849008A1 (en) 2004-06-25
FR2849008B1 FR2849008B1 (en) 2006-04-21

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2890088A1 (en) * 2005-08-29 2007-03-02 Michel Bannes Metallic pin for hydraulic shovel adjusting beam, is fixed to rear of beam through anchoring point which is fixed/removable securing point of pin, where pin faces trough, and presents force and size proportional to trough
US8920106B2 (en) 2011-06-24 2014-12-30 Caterpillar Inc. Excavator thumb assembly
US9057178B2 (en) 2012-03-30 2015-06-16 Caterpillar Inc. Stiff link thumb with dampener
US9127440B2 (en) 2011-11-21 2015-09-08 Caterpillar Inc. Bucket thumb assembly

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3275172A (en) * 1965-05-04 1966-09-27 Wrex All Implements Inc Wrecking and loading tool for use with a back hoe
US3353285A (en) * 1965-06-24 1967-11-21 Donald W Murray Backhoe attachment
US3807589A (en) * 1972-01-28 1974-04-30 R Shovick Bucket attachment for a backhoe
DE3132392A1 (en) * 1981-08-17 1983-03-03 Krupp Mak Maschinenbau Gmbh, 2300 Kiel Design of earth-moving gear, in particular as attachments for armoured vehicles
US4820112A (en) * 1988-03-08 1989-04-11 Ralph Mullican Claw attachment for backhoes and excavators
NL9100635A (en) * 1991-04-11 1992-11-02 Hollandsche Betongroep Nv Dredger with movable bucket on boom - having cover on boom shutting off bucket mouth on completion of movement
US5678332A (en) * 1996-06-24 1997-10-21 Hawkins; Bobby Leonard Changeable and retractable implement for use on a back hoe and method
US6260294B1 (en) * 1997-09-19 2001-07-17 Warrick Stanley Pitcher Grab attachment for backhoe and excavator buckets
US6287072B1 (en) * 1999-05-06 2001-09-11 James Wasilas Precision grapple

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3275172A (en) * 1965-05-04 1966-09-27 Wrex All Implements Inc Wrecking and loading tool for use with a back hoe
US3353285A (en) * 1965-06-24 1967-11-21 Donald W Murray Backhoe attachment
US3807589A (en) * 1972-01-28 1974-04-30 R Shovick Bucket attachment for a backhoe
DE3132392A1 (en) * 1981-08-17 1983-03-03 Krupp Mak Maschinenbau Gmbh, 2300 Kiel Design of earth-moving gear, in particular as attachments for armoured vehicles
US4820112A (en) * 1988-03-08 1989-04-11 Ralph Mullican Claw attachment for backhoes and excavators
NL9100635A (en) * 1991-04-11 1992-11-02 Hollandsche Betongroep Nv Dredger with movable bucket on boom - having cover on boom shutting off bucket mouth on completion of movement
US5678332A (en) * 1996-06-24 1997-10-21 Hawkins; Bobby Leonard Changeable and retractable implement for use on a back hoe and method
US6260294B1 (en) * 1997-09-19 2001-07-17 Warrick Stanley Pitcher Grab attachment for backhoe and excavator buckets
US6287072B1 (en) * 1999-05-06 2001-09-11 James Wasilas Precision grapple

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2890088A1 (en) * 2005-08-29 2007-03-02 Michel Bannes Metallic pin for hydraulic shovel adjusting beam, is fixed to rear of beam through anchoring point which is fixed/removable securing point of pin, where pin faces trough, and presents force and size proportional to trough
US8920106B2 (en) 2011-06-24 2014-12-30 Caterpillar Inc. Excavator thumb assembly
US9127440B2 (en) 2011-11-21 2015-09-08 Caterpillar Inc. Bucket thumb assembly
US9057178B2 (en) 2012-03-30 2015-06-16 Caterpillar Inc. Stiff link thumb with dampener

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