EP2110481A1 - Device for tilting a tool and, in particular a bucket of a construction machine - Google Patents

Device for tilting a tool and, in particular a bucket of a construction machine Download PDF

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Publication number
EP2110481A1
EP2110481A1 EP09157821A EP09157821A EP2110481A1 EP 2110481 A1 EP2110481 A1 EP 2110481A1 EP 09157821 A EP09157821 A EP 09157821A EP 09157821 A EP09157821 A EP 09157821A EP 2110481 A1 EP2110481 A1 EP 2110481A1
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EP
European Patent Office
Prior art keywords
cradle
primary
rotation
bearing
connecting head
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.)
Withdrawn
Application number
EP09157821A
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German (de)
French (fr)
Inventor
Philippe Jandard
Serge Morin
René Sieffert
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.)
Ateliers de Constructions du Beaujolais
MORIN
Original Assignee
Ateliers de Constructions du Beaujolais
MORIN
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 Ateliers de Constructions du Beaujolais, MORIN filed Critical Ateliers de Constructions du Beaujolais
Publication of EP2110481A1 publication Critical patent/EP2110481A1/en
Withdrawn legal-status Critical Current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
    • E02F3/3677—Devices to connect tools to arms, booms or the like allowing movement, e.g. rotation or translation, of the tool around or along another axis as the movement implied by the boom or arms, e.g. for tilting buckets

Definitions

  • the present invention relates to a device for tilting a tool and in particular a bucket of a public works machine.
  • a hydraulic excavator as represented in FIG. figure 1 , consists of a chassis 100 on tires or tracks and has a swiveling platform capable of rotating 360 °, carrying a cabin and an articulated structure.
  • This articulated structure conventionally has an arrow 200 at the end of which is articulated in rotation an arm 300, itself supporting a bucket 2 at its end.
  • the bucket 2 is conventionally rotated relative to the axis Z, which allows the bucket to dig and pour out materials.
  • the conventional hinge means for tilting the bucket are not entirely satisfactory insofar as the cylinders arranged on either side of the end of the arm which provide the inclination of the bucket are exposed to shocks; in addition, these hinge means are of significant size in the transverse direction and prohibit the use of narrow buckets.
  • FR 1 468 472 a hinge device which is positioned at the end of an arm of a public works machine which has several disadvantages.
  • the articulation device shown in this document comprises a jack which is embedded on the arm of the machine which limits the angular amplitude as illustrated for example by the figure 3 of this document.
  • the cylinder collides with the bucket after a small angular variation because the width of the cylinder and necessarily greater than that of the end of the machine-side arm.
  • the articulation device shown by FR 1 468 472 is otherwise cumbersome and is not protected against environmental aggression.
  • the object of the invention is, in this technical context, to propose a device for articulating a bucket of a public works machine which is compact, which is little exposed to shocks and which maximizes the angular amplitude of the bucket.
  • the invention relates to a device for articulating a tool, particularly a bucket, to an arm of a machine, having a connection head that can be connected to an arm and a cradle that can be connected to the bucket; the cradle can pivot relative to the connecting head about an axis of rotation ( ⁇ ) located in the plane of movement of the arm.
  • ⁇ an axis of rotation
  • the invention provides a completely original implementation of a double rod cylinder since it provides for interposing the double rod cylinder between a connecting head and a cradle for pivoting a bucket.
  • the two rods of the cylinder are fixed relative to the cradle while the cylinder body itself is reciprocated.
  • This reciprocating movement of the cylinder body results in a rotation of the cradle (and thus of the bucket) relative to the connecting head since one or two connecting rods connect the body of the jack to an articulation of the head.
  • This provision thus makes it possible to achieve very compact device in a transverse direction.
  • this device can be used in particular on a bucket of small width.
  • the connecting head comprises two primary plates each having a bearing adapted to receive a shaft pivotally connected to each connecting rod; in addition, each primary flange has a bearing designed to receive a shaft engaged in a bearing formed in the cradle allowing rotation of the cradle relative to the connecting head about the axis of rotation ( ⁇ ).
  • the connecting head may comprise two secondary flanges parallel and external to the primary flanges, each secondary flange being provided with a bearing coaxial with the axis ( ⁇ ), designed to receive a shaft which is engaged further in a bearing of the cradle and in a bearing of a primary flange.
  • each primary flange and each adjacent secondary flange are placed on either side of the cradle.
  • two clevises are formed by each pair of primary and secondary flanges. This allows for a particularly rigid and robust pivot connection between the connecting head and the cradle.
  • the cradle has two coaxial bearings each designed to receive a cap for keeping each of the cylinder rods without play.
  • the device comprises a central casing which covers the cradle in its part located between the primary flanges
  • the device may comprise two side casings which cover the cradle in its two zones delimited respectively by a primary flange and the cradle.
  • each of the primary flanges has a circular shape centered on the axis of rotation ( ⁇ ).
  • a supply duct of each of the chambers is formed in each rod and each corresponding cap.
  • the invention is intended to ensure the articulation of a bucket 2 which is conventional and that does not require a more complete description.
  • the device 1 includes a cradle 3 which is integral with the upper face of the cup 2.
  • the cradle 3 can be secured by welding and thus be permanently connected to the bucket 2. It will be seen that other connecting means of the cradle 3 on the bucket 2 may be envisaged including connecting means for the removable bucket 2 type quick coupler.
  • the cradle 3 which may be a piece of welded sheet metal or a casting, has a substantially parallelepipedal shape with four faces and, as can be seen in FIG. figure 2 , has four bearings 4 and 5 opposed two by two arranged substantially at the level of its long sides and its short sides.
  • the cradle 3 has two opposite bearings 4 which are oriented parallel to the bucket 2 and two bearings 5 which are oriented perpendicularly to the bucket 2 and whose axis is raised relative to the axis passing through the two bearings 4 .
  • a cylinder 7 with double rod Arranged inside the cradle 3, there is a cylinder 7 with double rod.
  • the particularity of the mounting of the cylinder 7 in the cradle 3 can be more particularly appreciated at the figure 3 .
  • This jack 7 with double rod has, in known manner, two coaxial rods 11 and 12 which are housed in a cylindrical body 10 of the jack.
  • the two rods 11 and 12 are connected at a piston 13 relative to which, as will be seen, the body 10 of the cylinder 7 moves.
  • the piston 13 delimits with the cylindrical body 10 of the cylinder 7, two chambers 8 and 9 in which a hydraulic fluid under pressure is alternately introduced.
  • the two rods 11 and 12 protruding from either side of the cylinder 7.
  • the two rods 11 and 12 are fixedly mounted in the bearings 4 of the cradle 3.
  • each free end of the rods 11 and 12 is equipped with a cap 17 which is itself locked in the bearings 4.
  • Each cap 17 ensures immobilization of the rod 11 or the rod 12 associated therewith; the axial position of the caps 17 in the bearings 4 can be adjusted to remove any play between a rod and a hat.
  • the figure 3 shows the axis ( ⁇ ) of pivoting of the bucket 2 and, offset from the latter, the pivot shaft 26 of the rod 18.
  • the figure 3 also shows an advantageous provision of the invention which provides that the supply of the chambers 8 and 9 is performed by conduits 14 which are formed in the rods 11 and 12. The conduits 14 are continued in each cap 17 from which does the hydraulic power supply.
  • tubular body of the jack 7 is integral with a ring 15 which supports two symmetrical and diametrically opposed pins 16.
  • the figure 2 only shows one of the two pins 16.
  • each of these trunnions 16 On each of these trunnions 16 is a connecting rod 18 which has two bearings at each of its ends. Each of these rods 18 is thus, at one of its ends, hinged to one of the pins 16 which protrude from the cylinder 7, while its second end is hinged to a connecting head which has the overall reference 19.
  • the connecting head 19 will itself connect by appropriate means at the end of an arm d ' a public works machine.
  • connection means to a public works machine arm.
  • these means are, for example, consisting of two parallel shafts 28 and 29. Any other connection means may be provided.
  • the connecting head 19 is thus provided with two primary flanges 21 which are located in the interior space of the cradle 3.
  • the cradle 3 and the tool 2 attached thereto are articulated in rotation relative to the connection head 19 around an axis ( ⁇ ) which is contained in the XY deflection plane of the arm 300 of the machine 100 shown as an example at the figure 1 .
  • each primary flange 21 is provided with a bearing 27 which allows to articulate the cradle 3 and the tool associated with it removably or permanently.
  • Two shafts 23 are respectively engaged in a bearing 5 of the cradle 3 and in a bearing 27 of a primary flange 21.
  • the two secondary flanges 24 are each provided with a bearing 27 'coaxial bearing 27 which is provided in each of the two primary flanges 21.
  • each pair of primary and secondary flanges 21 forms a yoke into which the cradle 3 and the shaft 23 engage.
  • each of the connecting rods 18 is pivotally connected to each of the primary flanges 21.
  • This pivot connection may be constituted by a shaft 26 supported on each primary flange 21.
  • the mechanism thus defined is such that, by acting on one or the other of the chambers 8 and 9 of the cylinder 7, it causes a displacement of the body 10 of the latter and thanks to the connecting rods 18, is thus caused to move the cradle 3 (and thus the bucket 2 attached thereto) relative to the axis ( ⁇ ) which passes through the bearings 5 of the cradle and 27, 27 'of the connecting head 19.
  • the cylinder 7 is therefore used in a manner quite original since in the kinematics of the connecting head according to the invention, it is the displacement of the body 10 of the jack which is used to create a movement and not the displacement of the rods as is the case traditionally.
  • a further aspect of the invention is the management of the protection of the cylinder 7 and its linkage, which is the part of the device to be protected imperatively.
  • rollover means which may consist of a main casing 30, fixed on the cradle 3 and covering the cylinder 7 and the two rods 18, and two side casings 31 completing the protection of the cylinder 7.
  • the main casing 30 has appropriate shapes to allow its docking on the cradle 3 and avoid any collision with the cylinder and the linkage during movement, while the two side casings 31 each have a semicircular shape.
  • Another provision can be added which contributes to the management of the tightness and the protection of the jack 7.
  • the difficulty encountered in achieving the seal is the presence of the primary flanges 21 which dive into the cradle 3 and which, therefore, do not allow to use a housing which covers the entire cradle 3.
  • each of the primary flanges 21 a circular shape centered on the axis of rotation ( ⁇ ).
  • This arrangement has an extremely positive effect on the protection of the cylinder 7.
  • the side housings 31 are provided with returns 32 which come into contact with the main housing 30 so as to surround each of the flanges 21.
  • the shape circular 21 primary flanges thanks to the shape circular 21 primary flanges, the operating clearance between the edge of each primary flange 21 and the return 32 of each side casing 31 remains constant during the rotation of the cradle 3.
  • This functional game can be significantly reduced.
  • the figure 5 allows to appreciate the compactness of the device according to the invention.
  • This figure shows a narrow bucket 2 receiving the device according to the invention.
  • the figure 6 discloses another possibility of using the invention in which the cradle 3 is not directly attached to a bucket.
  • the device according to the invention receives fast fastener type connection means 50, which are, in this case, consist of two sheet metal elements each having a bearing and a hook.
  • the invention is not limited to the embodiments described above but it encompasses all the embodiments.
  • This configuration can be beneficial in terms of space because it allows to use small cylinders.

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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 device (1) has a connecting rod (18) whose one end is articulated on a body (10) of double rod jacks (7). Another end of the connecting rod is articulated to a flange (21) supported by a connection head (19) at a level of a connection shaft off-centered with respect to a rotation axis (delta), so that hydraulic pressure applied to one of chambers causes rectilinear movement of the body of each jack to be converted by the rod in rotation of a cradle (3) around the axis.

Description

La présente invention concerne un dispositif d'inclinaison d'un outil et notamment d'un godet d'un engin de travaux public.The present invention relates to a device for tilting a tool and in particular a bucket of a public works machine.

Dans le domaine des engins de travaux publics, on connaît un engin de type pelle hydraulique ou pelleteuse qui permet de creuser, lever, prendre, déverser des matériaux à l'aide d'un outil tel qu'un godet.In the field of public works machinery, there is a machine type excavator or digger that can dig, lift, take, discharge materials using a tool such as a bucket.

De façon classique, une pelle hydraulique telle que représentée à la figure 1, est constituée d'un châssis 100 sur pneus ou sur chenilles et présente une plateforme orientable capable de tourner sur 360°, portant une cabine ainsi qu'une structure articulée.In a conventional manner, a hydraulic excavator as represented in FIG. figure 1 , consists of a chassis 100 on tires or tracks and has a swiveling platform capable of rotating 360 °, carrying a cabin and an articulated structure.

Cette structure articulée présente de manière classique une flèche 200 à l'extrémité de laquelle est articulé en rotation un bras 300, supportant lui-même un godet 2 à son extrémité.This articulated structure conventionally has an arrow 200 at the end of which is articulated in rotation an arm 300, itself supporting a bucket 2 at its end.

Si l'on se réfère à un référentiel XYZ placé à l'extrémité du bras 300, le godet 2 est, de façon classique, animé d'un mouvement de rotation par rapport à l'axe Z, ce qui permet au godet de creuser et déverser des matériaux.If reference is made to an XYZ reference frame placed at the end of the arm 300, the bucket 2 is conventionally rotated relative to the axis Z, which allows the bucket to dig and pour out materials.

Il est également connu de disposer entre l'extrémité du bras et le godet, des moyens d'articulation qui permettent d'incliner le godet autour de d'un axe Δ contenu dans le plan XY du bras. Ceci permet notamment de réaliser des travaux de talutage et de finition.It is also known to arrange between the end of the arm and the bucket, articulation means which allow to tilt the bucket around an axis Δ contained in the XY plane of the arm. This makes it possible to carry out work of sloping and finishing.

De façon classique, il peut être prévu de disposer deux vérins de part et d'autre de l'articulation du godet pour permettre à celui-ci d'être déplacé en rotation autour de l'axe Δ.Conventionally, it may be provided to have two cylinders on either side of the hinge of the bucket to allow it to be moved in rotation about the axis Δ.

Les moyens d'articulation classiques permettant l'inclinaison du godet ne sont pas entièrement satisfaisants dans la mesure où les vérins disposés de part et d'autre de l'extrémité du bras qui assurent l'inclinaison du godet sont exposés aux chocs; de plus, ces moyens d'articulation sont d'un encombrement important dans le sens transversal et interdisent l'utilisation de godets étroits.The conventional hinge means for tilting the bucket are not entirely satisfactory insofar as the cylinders arranged on either side of the end of the arm which provide the inclination of the bucket are exposed to shocks; in addition, these hinge means are of significant size in the transverse direction and prohibit the use of narrow buckets.

Par ailleurs, on connaît par le document FR 1 468 472 un dispositif d'articulation qui est positionné à l'extrémité d'un bras d'un engin de travaux publics qui présente plusieurs inconvénients. Le dispositif d'articulation montré par ce document comprend un vérin qui est embarqué sur le bras de l'engin ce qui limite l'amplitude angulaire comme l'illustre par exemple la figure 3 de ce document. Comme on peut le voir sur cette figure, le vérin entre en collision avec le godet après une faible variation angulaire car la largeur du vérin et nécessairement plus importante que celle de l'extrémité du bras côté machine. Le dispositif d'articulation montré par FR 1 468 472 est par ailleurs encombrant et n'est pas protégé contre les agressions du milieu.Moreover, we know from the document FR 1 468 472 a hinge device which is positioned at the end of an arm of a public works machine which has several disadvantages. The articulation device shown in this document comprises a jack which is embedded on the arm of the machine which limits the angular amplitude as illustrated for example by the figure 3 of this document. As can be seen in this figure, the cylinder collides with the bucket after a small angular variation because the width of the cylinder and necessarily greater than that of the end of the machine-side arm. The articulation device shown by FR 1 468 472 is otherwise cumbersome and is not protected against environmental aggression.

L'invention a pour but, dans ce contexte technique, de proposer un dispositif d'articulation d'un godet d'un engin de travaux publics qui soit compact, qui soit peu exposé aux chocs et qui maximise l'amplitude angulaire du godet.The object of the invention is, in this technical context, to propose a device for articulating a bucket of a public works machine which is compact, which is little exposed to shocks and which maximizes the angular amplitude of the bucket.

L'invention concerne un dispositif d'articulation d'un outil, notamment d'un godet, à un bras d'un engin, présentant une tête de liaison pouvant être connectée à un bras et un berceau pouvant être relié au godet ; le berceau peut pivoter par rapport à la tête de liaison autour d'un axe de rotation (Δ) situé dans le plan de débattement du bras. On précise que, au sens du présent document, le plan de débattement du bras de l'engin est le plan XY du référentiel XYZ précédemment évoqué.The invention relates to a device for articulating a tool, particularly a bucket, to an arm of a machine, having a connection head that can be connected to an arm and a cradle that can be connected to the bucket; the cradle can pivot relative to the connecting head about an axis of rotation (Δ) located in the plane of movement of the arm. It is specified that, for the purposes of this document, the plane of movement of the arm of the machine is the XY plane XYZ repository previously mentioned.

Le dispositif comprend, de plus,
au moins un vérin à double tige présentant :

  • un corps cylindrique intégrant deux chambres délimitées par un piston, et
  • deux tiges coaxiales liées au piston, et dépassant de part et d'autre du corps, les deux tiges étant fixées sur le berceau, et
au moins une bielle dont une extrémité est reliée au corps d'au moins un piston et dont la seconde extrémité est reliée à un flasque primaire supporté par la tête de liaison au niveau d'un arbre de liaison excentré par rapport à l'axe de rotation (Δ), de sorte qu'une pression appliquée dans l'une ou l'autre des chambres cause un déplacement rectiligne du corps de chaque vérin, converti par chaque bielle en déplacement du berceau autour de l'axe de rotation (Δ).The device further includes
at least one double-rod cylinder having:
  • a cylindrical body incorporating two chambers delimited by a piston, and
  • two coaxial rods connected to the piston, and protruding from either side of the body, the two rods being fixed on the cradle, and
at least one connecting rod whose end is connected to the body of at least one piston and whose second end is connected to a primary flange supported by the connecting head at an eccentric connecting shaft with respect to the axis of rotation (Δ), so that a pressure applied in one or the other of the chambers causes a rectilinear displacement of the body of each cylinder, converted by each connecting rod in displacement of the cradle about the axis of rotation (Δ) .

Ainsi, l'invention prévoit une mise en oeuvre tout à fait originale d'un vérin à double tige puisqu'elle prévoit d'interposer ce vérin à double tige entre une tête de liaison et un berceau permettant le pivotement d'un godet. Les deux tiges du vérin sont fixes par rapport au berceau tandis que le corps du vérin est lui-même animé d'un mouvement alternatif. Ce mouvement alternatif du corps du vérin se traduit par une rotation du berceau (et donc du godet) par rapport à la tête de liaison puisque une ou deux bielles relient le corps du vérin à une articulation de la tête. Cette disposition permet ainsi de parvenir à un dispositif très compact dans un sens transversal. Ainsi, ce dispositif peut être utilisé notamment sur un godet de petite largeur.Thus, the invention provides a completely original implementation of a double rod cylinder since it provides for interposing the double rod cylinder between a connecting head and a cradle for pivoting a bucket. The two rods of the cylinder are fixed relative to the cradle while the cylinder body itself is reciprocated. This reciprocating movement of the cylinder body results in a rotation of the cradle (and thus of the bucket) relative to the connecting head since one or two connecting rods connect the body of the jack to an articulation of the head. This provision thus makes it possible to achieve very compact device in a transverse direction. Thus, this device can be used in particular on a bucket of small width.

De manière concrète pour assurer la rotation du berceau par rapport à la tête de liaison, la tête de liaison comprend deux flasques primaires présentant chacun un palier conçu pour recevoir un arbre relié en pivot sur chaque bielle ; de plus, chaque flasque primaire présente un palier conçu pour recevoir un arbre engagé dans un palier ménagé dans le berceau autorisant la rotation du berceau par rapport à la tête de liaison autour de l'axe de rotation (Δ).Concretely to ensure the rotation of the cradle relative to the connecting head, the connecting head comprises two primary plates each having a bearing adapted to receive a shaft pivotally connected to each connecting rod; in addition, each primary flange has a bearing designed to receive a shaft engaged in a bearing formed in the cradle allowing rotation of the cradle relative to the connecting head about the axis of rotation (Δ).

Cette disposition prévoit ainsi que la rotation du berceau par rapport à la tête de liaison est réalisée par deux demi-arbres et non pas par un arbre traversant comme cela est le cas dans les dispositifs conventionnels. Cette disposition concourt de manière significative à la compacité du dispositif selon l'invention.This provision thus provides that the rotation of the cradle relative to the connecting head is performed by two half-shafts and not by a traversing shaft as is the case in conventional devices. This arrangement contributes significantly to the compactness of the device according to the invention.

De plus, la tête de liaison peut comprendre deux flasques secondaires parallèles et extérieurs aux flasques primaires, chaque flasque secondaire étant pourvu d'un palier coaxial à l'axe (Δ), conçu pour recevoir un arbre qui est engagé de plus dans un palier du berceau et dans un palier d'un flasque primaire. De plus chaque flasque primaire et chaque flasque secondaire adjacent se placent de part et d'autre du berceau. Selon cette disposition, deux chapes sont formées par chaque couple de flasques primaire et secondaire. Ceci permet de réaliser une liaison pivot particulièrement rigide et robuste entre la tête de liaison et le berceau.In addition, the connecting head may comprise two secondary flanges parallel and external to the primary flanges, each secondary flange being provided with a bearing coaxial with the axis (Δ), designed to receive a shaft which is engaged further in a bearing of the cradle and in a bearing of a primary flange. In addition each primary flange and each adjacent secondary flange are placed on either side of the cradle. According to this arrangement, two clevises are formed by each pair of primary and secondary flanges. This allows for a particularly rigid and robust pivot connection between the connecting head and the cradle.

Dans une forme de réalisation, le berceau présente deux paliers coaxiaux conçus pour recevoir chacun un chapeau destiné à maintenir sans jeu chacune des tiges du vérin.In one embodiment, the cradle has two coaxial bearings each designed to receive a cap for keeping each of the cylinder rods without play.

Pour assurer la protection du vérin, le dispositif comprend un carter central qui recouvre le berceau dans sa partie située entre les flasques primairesTo ensure the protection of the jack, the device comprises a central casing which covers the cradle in its part located between the primary flanges

De plus, le dispositif peut comprendre deux carters latéraux qui recouvrent le berceau dans ses deux zones délimitées par respectivement un flasque primaire et le berceau.In addition, the device may comprise two side casings which cover the cradle in its two zones delimited respectively by a primary flange and the cradle.

Selon un aspect important de l'invention en matière de protection du vérin, chacun des flasques primaires présente une forme circulaire centrée sur l'axe de rotation (Δ).According to an important aspect of the invention as regards the protection of the jack, each of the primary flanges has a circular shape centered on the axis of rotation (Δ).

Toujours dans la problématique de la protection de l'hydraulique du dispositif, un conduit d'alimentation de chacune des chambres est ménagé dans chaque tige et chaque chapeau correspondant.Still in the problem of protecting the hydraulic device, a supply duct of each of the chambers is formed in each rod and each corresponding cap.

Pour sa bonne compréhension, l'invention est décrite en référence aux dessins ci annexés représentant à titre d'exemple non limitatif, plusieurs formes de réalisation selon celle-ci.

  • Figure 1 est une représentation générale d'un engin de travaux publics équipé du dispositif selon l'invention.
  • Figure 2 représente en perspective éclatée les différents constituants participant au dispositif ;
  • Figure 3 est une vue en coupe passant par III-III de la figure 2 ;
  • Figure 4 est une vue en coupe similaire à la figure 3, le dispositif étant représenté dans la position extrême inverse à celle de la figure 3 ;
  • Figure 5 est une vue en perspective d'un godet étroit équipé du dispositif selon l'invention ;
  • Figure 6 est une vue en perspective d'un dispositif selon l'invention équipé de moyens de connexion amovibles à un outil ;
For a good understanding, the invention is described with reference to the accompanying drawings showing by way of non-limiting example, several embodiments according thereto.
  • Figure 1 is a general representation of a public works machine equipped with the device according to the invention.
  • Figure 2 represents in exploded perspective the various constituents participating in the device;
  • Figure 3 is a sectional view through III-III of the figure 2 ;
  • Figure 4 is a sectional view similar to the figure 3 , the device being represented in the opposite extreme position to that of the figure 3 ;
  • Figure 5 is a perspective view of a narrow bucket equipped with the device according to the invention;
  • Figure 6 is a perspective view of a device according to the invention equipped with removable connection means to a tool;

Comme on peut le voir sur la figure 1, l'invention est destinée à assurer l'articulation d'un godet 2 qui est de facture classique et qui ne nécessite pas de description plus complète.As can be seen on the figure 1 , the invention is intended to ensure the articulation of a bucket 2 which is conventional and that does not require a more complete description.

Dans la forme d'exécution représentée à la figure 1, le dispositif 1 inclut un berceau 3 qui est solidaire de la face supérieure du godet 2.In the embodiment shown in figure 1 , the device 1 includes a cradle 3 which is integral with the upper face of the cup 2.

Sur la figure 1, le berceau 3 peut être solidarisé par soudage et être ainsi relié de manière définitive au godet 2. On verra que d'autres moyens de liaison du berceau 3 sur le godet 2 peuvent être envisagés notamment des moyens de liaison permettant l'amovibilité du godet 2 de type attache rapide.On the figure 1 , the cradle 3 can be secured by welding and thus be permanently connected to the bucket 2. It will be seen that other connecting means of the cradle 3 on the bucket 2 may be envisaged including connecting means for the removable bucket 2 type quick coupler.

Le berceau 3, qui peut être une pièce de tôle mécano soudée ou une pièce de fonderie, présente une forme sensiblement parallélépipédique à quatre faces et, comme on peut le voir sur la figure 2, possède quatre paliers 4 et 5 opposés deux à deux disposés sensiblement au niveau de ses grands côtés et de ses petits côtés.The cradle 3, which may be a piece of welded sheet metal or a casting, has a substantially parallelepipedal shape with four faces and, as can be seen in FIG. figure 2 , has four bearings 4 and 5 opposed two by two arranged substantially at the level of its long sides and its short sides.

Le berceau 3 est doté de deux paliers opposés 4 qui sont orientés de manière parallèle au godet 2 et de deux paliers 5 qui sont orientés perpendiculairement au godet 2 et dont l'axe est surélevé par rapport à l'axe passant par les deux paliers 4.The cradle 3 has two opposite bearings 4 which are oriented parallel to the bucket 2 and two bearings 5 which are oriented perpendicularly to the bucket 2 and whose axis is raised relative to the axis passing through the two bearings 4 .

Disposé à l'intérieur du berceau 3, on trouve un vérin 7 à double tige. La particularité du montage du vérin 7 dans le berceau 3 peut être plus spécialement appréciée à la figure 3.Arranged inside the cradle 3, there is a cylinder 7 with double rod. The particularity of the mounting of the cylinder 7 in the cradle 3 can be more particularly appreciated at the figure 3 .

Ce vérin 7 à double tige possède, de façon connue en soi, deux tiges coaxiales 11 et 12 qui sont logées dans un corps cylindrique 10 du vérin. Les deux tiges 11 et 12 sont reliées au niveau d'un piston 13 par rapport auquel, comme on va le voir, le corps 10 du vérin 7 se déplace. Le piston 13 délimite avec le corps 10 cylindrique du vérin 7, deux chambres 8 et 9 dans lesquelles un fluide hydraulique sous pression est alternativement introduit.This jack 7 with double rod has, in known manner, two coaxial rods 11 and 12 which are housed in a cylindrical body 10 of the jack. The two rods 11 and 12 are connected at a piston 13 relative to which, as will be seen, the body 10 of the cylinder 7 moves. The piston 13 delimits with the cylindrical body 10 of the cylinder 7, two chambers 8 and 9 in which a hydraulic fluid under pressure is alternately introduced.

On voit, ainsi, sur la figure 3, les deux tiges 11 et 12 qui dépassent de part et d'autre du vérin 7. De façon spécifique à l'invention, les deux tiges 11 et 12 sont montées de manière fixe dans les paliers 4 du berceau 3. Pour cela, chaque extrémité libre des tiges 11 et 12 est équipée d'un chapeau 17 qui est lui-même bloqué dans les paliers 4. Chaque chapeau 17 assure une immobilisation de la tige 11 ou de la tige 12 qui lui est associée ; la position axiale des chapeaux 17 dans les paliers 4 peut être ajustée pour supprimer tout jeu entre une tige et un chapeau.We see, thus, on the figure 3 , the two rods 11 and 12 protruding from either side of the cylinder 7. Specifically to the invention, the two rods 11 and 12 are fixedly mounted in the bearings 4 of the cradle 3. For this, each free end of the rods 11 and 12 is equipped with a cap 17 which is itself locked in the bearings 4. Each cap 17 ensures immobilization of the rod 11 or the rod 12 associated therewith; the axial position of the caps 17 in the bearings 4 can be adjusted to remove any play between a rod and a hat.

Par conséquent, lorsque l'une des chambres 8 ou 9 est alimentée en fluide hydraulique sous pression, c'est le corps 10 du vérin 7 qui se déplace le long des tiges 11 et 12. Le corps 10 du vérin 7 se déplace de manière alternative à l'intérieur du berceau 3 selon que la pression hydraulique est introduite dans l'une ou l'autre des chambres 8 ou 9.Therefore, when one of the chambers 8 or 9 is supplied with hydraulic fluid under pressure, it is the body 10 of the cylinder 7 which moves along the rods 11 and 12. The body 10 of the cylinder 7 moves so that alternative to the interior of the cradle 3 according to that the hydraulic pressure is introduced into one or the other of the chambers 8 or 9.

La figure 3 fait apparaître l'axe (Δ) de pivotement du godet 2 et, décalé par rapport à ce dernier, l'arbre de pivotement 26 de la bielle 18.The figure 3 shows the axis (Δ) of pivoting of the bucket 2 and, offset from the latter, the pivot shaft 26 of the rod 18.

La figure 3 fait également apparaître une disposition avantageuse de l'invention qui prévoit que l'alimentation des chambres 8 et 9 est réalisée par des conduits 14 qui sont pratiqués dans les tiges 11 et 12. Les conduits 14 se poursuivent dans chaque chapeau 17 à partir duquel se fait l'alimentation hydraulique.The figure 3 also shows an advantageous provision of the invention which provides that the supply of the chambers 8 and 9 is performed by conduits 14 which are formed in the rods 11 and 12. The conduits 14 are continued in each cap 17 from which does the hydraulic power supply.

En revenant à la figure 2, on peut voir que le corps 10 tubulaire du vérin 7 est solidaire d'une bague 15 qui supporte deux tourillons 16 symétriques et diamétralement opposés. La figure 2 ne permet de voir que l'un des deux tourillons 16.Returning to figure 2 it can be seen that the tubular body of the jack 7 is integral with a ring 15 which supports two symmetrical and diametrically opposed pins 16. The figure 2 only shows one of the two pins 16.

Sur chacun de ces tourillons 16, est chaussée une bielle 18 qui présente deux paliers à chacune de ses extrémités. Chacune de ces bielles 18 est ainsi, à l'une de ses extrémités, articulée à l'un des tourillons 16 qui dépassent du vérin 7, tandis que sa seconde extrémité est articulée sur une tête de liaison qui présente la référence globale 19. La tête de liaison 19 va elle-même se connecter par des moyens appropriés, à l'extrémité d'un bras d'un engin de travaux publics.On each of these trunnions 16 is a connecting rod 18 which has two bearings at each of its ends. Each of these rods 18 is thus, at one of its ends, hinged to one of the pins 16 which protrude from the cylinder 7, while its second end is hinged to a connecting head which has the overall reference 19. The connecting head 19 will itself connect by appropriate means at the end of an arm d ' a public works machine.

Sur la figure 4, on remarque la tête de liaison 19 qui possède deux flasques primaires 21 et optionnellement deux flasques secondaires 24 ; les flasques primaires 21 et secondaires 24 sont reliées par une paroi 25 perpendiculaire. La paroi 25 supporte, par ailleurs, des moyens de connexion à un bras d'engin de travaux publics. Sur l'exemple de la figure 2, ces moyens sont, à titre d'exemple, constitués de deux arbres parallèles 28 et 29. Tout autre moyen de connexion peut être prévu.On the figure 4 , we notice the connecting head 19 which has two primary flanges 21 and optionally two secondary flanges 24; the primary and secondary flanges 21 are connected by a perpendicular wall. The wall 25 supports, moreover, connection means to a public works machine arm. On the example of the figure 2 these means are, for example, consisting of two parallel shafts 28 and 29. Any other connection means may be provided.

La tête de liaison 19 est ainsi pourvue de deux flasques primaires 21 qui sont situés dans l'espace intérieur du berceau 3.The connecting head 19 is thus provided with two primary flanges 21 which are located in the interior space of the cradle 3.

Le berceau 3 et l'outil 2 qui lui est attaché sont articulés en rotation par rapport à la tête de liaison 19 autour d'un axe (Δ) qui est contenu dans le plan de débattement XY du bras 300 de l'engin 100 représenté à titre d'exemple à la figure 1.The cradle 3 and the tool 2 attached thereto are articulated in rotation relative to the connection head 19 around an axis (Δ) which is contained in the XY deflection plane of the arm 300 of the machine 100 shown as an example at the figure 1 .

Pour réaliser cette liaison pivot, chaque flasque primaire 21 est pourvu d'un palier 27 qui permet d'articuler le berceau 3 et l'outil qui lui est associé de manière amovible ou permanente. Deux arbres 23 sont respectivement engagés dans un palier 5 du berceau 3 et dans un palier 27 d'un flasque primaire 21. Pour rigidifier la liaison pivot entre la tête de liaison 19 et le berceau 3, il peut être prévu, comme cela est montré sur les figures, de doter la tête de liaison 19 de deux flasques secondaires 24 qui viennent se placer à l'extérieur du berceau 3. Les deux flasques secondaires 24 sont chacun pourvus d'un palier 27' coaxial du palier 27 qui est prévu dans chacun des deux flasques primaires 21.To achieve this pivot connection, each primary flange 21 is provided with a bearing 27 which allows to articulate the cradle 3 and the tool associated with it removably or permanently. Two shafts 23 are respectively engaged in a bearing 5 of the cradle 3 and in a bearing 27 of a primary flange 21. To stiffen the pivot connection between the connecting head 19 and the cradle 3, it can be provided, as shown in the figures, to provide the connecting head 19 with two secondary flanges 24 which are placed outside the cradle 3. The two secondary flanges 24 are each provided with a bearing 27 'coaxial bearing 27 which is provided in each of the two primary flanges 21.

Lorsque la tête de liaison 19 est dotée de flasques secondaires 24, chaque couple de flasques primaire 21 et secondaire 24 forme une chape dans laquelle vient s'engager le berceau 3 et l'arbre 23.When the connecting head 19 is provided with secondary flanges 24, each pair of primary and secondary flanges 21 forms a yoke into which the cradle 3 and the shaft 23 engage.

De façon tout à fait originale à l'invention, comme cela apparaît plus clairement à la figure 3, l'extrémité de chacune des bielles 18 est reliée en pivot à chacun des flasques primaires 21. Cette liaison pivot peut être constituée par un arbre 26 supporté sur chaque flasque primaire 21.In a very original way to the invention, as it appears more clearly in the figure 3 , the end of each of the connecting rods 18 is pivotally connected to each of the primary flanges 21. This pivot connection may be constituted by a shaft 26 supported on each primary flange 21.

Il apparaît, ainsi, que le vérin 7 associé aux flasques primaires 21 et les bielles 18, assure le pilotage de l'inclinaison du godet 2 par rapport à la tête de liaison 19 qui est elle-même positionnée à l'extrémité du bras d'un engin de travaux publics.It thus appears that the jack 7 associated with the primary flanges 21 and the rods 18, controls the inclination of the bucket 2 relative to the connecting head 19 which is itself positioned at the end of the arm of a public works machine.

Le mécanisme ainsi défini est tel que, en agissant sur l'une ou l'autre des chambres 8 et 9 du vérin 7, on provoque un déplacement du corps 10 de ce dernier et grâce aux bielles 18, on provoque ainsi un déplacement du berceau 3 (et donc du godet 2 qui lui est attaché) par rapport à l'axe (Δ) qui passe par les paliers 5 du berceau et 27, 27' de la tête de liaison 19. Le vérin 7 est donc utilisé de manière tout à fait originale puisque dans la cinématique de la tête de liaison selon l'invention, c'est le déplacement du corps 10 du vérin qui est utilisé pour créer un mouvement et non le déplacement des tiges comme cela est le cas traditionnellement.The mechanism thus defined is such that, by acting on one or the other of the chambers 8 and 9 of the cylinder 7, it causes a displacement of the body 10 of the latter and thanks to the connecting rods 18, is thus caused to move the cradle 3 (and thus the bucket 2 attached thereto) relative to the axis (Δ) which passes through the bearings 5 of the cradle and 27, 27 'of the connecting head 19. The cylinder 7 is therefore used in a manner quite original since in the kinematics of the connecting head according to the invention, it is the displacement of the body 10 of the jack which is used to create a movement and not the displacement of the rods as is the case traditionally.

Un aspect supplémentaire de l'invention tient à la gestion de la protection du vérin 7 et de son embiellage, qui constitue la partie du dispositif à protéger impérativement.A further aspect of the invention is the management of the protection of the cylinder 7 and its linkage, which is the part of the device to be protected imperatively.

On note ainsi la présence de moyens de capotage qui peuvent être constitués d'un carter principal 30, fixé sur le berceau 3 et couvrant le vérin 7 et les deux bielles 18, et de deux carters latéraux 31 complétant la protection du vérin 7. Le carter principal 30 présente des formes appropriées pour permettre son accostage sur le berceau 3 et éviter toute collision avec le vérin et l'embiellage au cours du déplacement, tandis que les deux carters latéraux 31 présentent chacun une forme en demi-cercle.There is thus the presence of rollover means which may consist of a main casing 30, fixed on the cradle 3 and covering the cylinder 7 and the two rods 18, and two side casings 31 completing the protection of the cylinder 7. The main casing 30 has appropriate shapes to allow its docking on the cradle 3 and avoid any collision with the cylinder and the linkage during movement, while the two side casings 31 each have a semicircular shape.

On peut ajouter une autre disposition qui participe à la gestion de l'étanchéité et de la protection du vérin 7.Another provision can be added which contributes to the management of the tightness and the protection of the jack 7.

La difficulté que l'on rencontre pour la réalisation de l'étanchéité est la présence des flasques primaires 21 qui plongent dans le berceau 3 et qui, par conséquent, ne permettent pas d'utiliser un carter qui recouvrirait la totalité du berceau 3.The difficulty encountered in achieving the seal is the presence of the primary flanges 21 which dive into the cradle 3 and which, therefore, do not allow to use a housing which covers the entire cradle 3.

Il est alors prévu de donner à chacun des flasques primaires 21 une forme circulaire centrée sur l'axe de rotation (Δ). Cette disposition a un effet extrêmement positif sur la protection du vérin 7. En effet, on voit que les carters latéraux 31 sont dotés de retours 32 qui viennent en contact du carter principal 30 de manière à entourer chacun des flasques 21. Grâce à la forme circulaire des flasques primaires 21, le jeu de fonctionnement qui existe entre le bord de chaque flasque primaire 21 et le retour 32 de chaque carter latéral 31 reste constant lors de la rotation du berceau 3. Ce jeu fonctionnel peut donc être réduit de façon significative. Il est par ailleurs possible d'obturer totalement ce jeu de fonctionnement par un joint à lèvre porté par les retours 32 des carters latéraux 31. Ce joint à lèvre vient en appui contre chacun des flasques primaires 21 et ainsi interdit l'introduction de corps étrangers de type boue, graviers etc.. que l'on trouve habituellement dans l'environnement de travail d'un engin de travaux publics.It is then planned to give each of the primary flanges 21 a circular shape centered on the axis of rotation (Δ). This arrangement has an extremely positive effect on the protection of the cylinder 7. Indeed, we see that the side housings 31 are provided with returns 32 which come into contact with the main housing 30 so as to surround each of the flanges 21. Thanks to the shape circular 21 primary flanges, the operating clearance between the edge of each primary flange 21 and the return 32 of each side casing 31 remains constant during the rotation of the cradle 3. This functional game can be significantly reduced. It is also possible to close totally this game of operation by a lip seal carried by the returns 32 of the side casings 31. This lip seal bears against each of the primary flanges 21 and thus prohibits the introduction of foreign bodies of the mud type, gravel etc. that is usually found in the working environment of a public works machine.

La figure 5 permet d'apprécier la compacité du dispositif selon l'invention. Cette figure montre un godet 2 étroit recevant le dispositif selon l'invention.The figure 5 allows to appreciate the compactness of the device according to the invention. This figure shows a narrow bucket 2 receiving the device according to the invention.

La figure 6 fait apparaître une autre possibilité d'utilisation de l'invention dans laquelle le berceau 3 n'est pas directement fixé sur un godet. Dans cette forme d'utilisation le dispositif selon l'invention reçoit des moyens de connexion de type attache rapide 50, qui sont, en l'espèce, constitués de deux éléments de tôle présentant chacun un palier et un crochet.The figure 6 discloses another possibility of using the invention in which the cradle 3 is not directly attached to a bucket. In this form of use the device according to the invention receives fast fastener type connection means 50, which are, in this case, consist of two sheet metal elements each having a bearing and a hook.

Bien entendu, l'invention n'est pas limitée aux exemples de réalisation décrits ci-dessus mais elle en embrasse au contraire toutes les formes de réalisation. Ainsi, il pourrait être envisagé de doter le dispositif selon l'invention de deux vérins à la place de l'unique vérin 7 qui est décrit dans l'exemple de réalisation des figures 1 à 6. Cette configuration peut s'avérer bénéfique en termes d'encombrement puisque elle permet d'employer des vérins de petites tailles.Of course, the invention is not limited to the embodiments described above but it encompasses all the embodiments. Thus, it could be envisaged to provide the device according to the invention with two jacks in place of the single jack 7 which is described in the embodiment of FIGS. Figures 1 to 6 . This configuration can be beneficial in terms of space because it allows to use small cylinders.

Claims (9)

Dispositif d'articulation (1) d'un outil, notamment d'un godet (2), à un bras (300) d'un engin (100), le dispositif d'articulation présentant une tête de liaison (19) pouvant être connectée à un bras (300) et un berceau (3) pouvant être relié à l'outil, le berceau (3) pouvant pivoter par rapport à la tête de liaison (19) autour d'un axe de rotation (Δ) situé dans le plan de débattement du bras (300), caractérisé en ce que le dispositif comprend,
au moins un vérin (7) à double tige présentant un corps (10) cylindrique intégrant deux chambres (8,9) délimitées par un piston (13), et deux tiges (11,12) coaxiales liées au piston (13), et dépassant de part et d'autre du corps, les deux tiges (11,12) étant fixées sur le berceau (3), et
au moins une bielle (18) dont une première extrémité est articulée sur le corps (10) et dont la seconde extrémité est articulée sur un flasque primaire (21) supporté par la tête de liaison (19) au niveau d'un arbre de liaison excentré par rapport à l'axe de rotation (Δ), de sorte qu'une pression appliquée dans l'une ou l'autre des chambres (8,9) cause un déplacement rectiligne du corps (10) de chaque vérin (7) converti par chaque bielle (18) en rotation du berceau (3) autour de l'axe (Δ).A hinge device (1) for a tool, in particular a bucket (2), with an arm (300) of a machine (100), the hinge device having a connecting head (19) which can be connected to an arm (300) and a cradle (3) connectable to the tool, the cradle (3) being pivotable relative to the connecting head (19) about an axis of rotation (Δ) located in the plane of movement of the arm (300), characterized in that the device comprises,
at least one double rod cylinder (7) having a cylindrical body (10) incorporating two chambers (8, 9) delimited by a piston (13), and two coaxial rods (11, 12) connected to the piston (13), and protruding from both sides of the body, the two rods (11,12) being fixed on the cradle (3), and
at least one connecting rod (18) whose first end is articulated on the body (10) and whose second end is articulated to a primary flange (21) supported by the connecting head (19) at a connecting shaft eccentric with respect to the axis of rotation (Δ), so that a pressure applied in one or the other of the chambers (8,9) causes a rectilinear displacement of the body (10) of each jack (7) converted by each rod (18) in rotation of the cradle (3) about the axis (Δ). Dispositif selon la revendication 1, caractérisé en ce que la tête de liaison (19) comprend deux flasques primaires (21) présentant chacun un palier (22) conçu pour recevoir un arbre (26) relié en pivot sur chaque bielle (18) et présentant chacun un palier (27) conçu pour recevoir un arbre (23) engagé dans un palier (5) ménagé dans le berceau (3) autorisant la rotation du berceau (3) par rapport à la tête de liaison (19) autour de l'axe de rotation (Δ).Device according to claim 1, characterized in that the connecting head (19) comprises two primary flanges (21) each having a bearing (22) designed to receive a shaft (26) pivotally connected to each connecting rod (18) and having each a bearing (27) adapted to receive a shaft (23) engaged in a bearing (5) formed in the cradle (3) allowing rotation of the cradle (3) relative to the connecting head (19) around the rotation axis (Δ). Dispositif selon la revendication 2, caractérisé en ce que la tête de liaison (19) comprend deux flasques secondaires (24) parallèles et extérieurs aux flasques primaires (21), chaque flasque secondaire (24) étant pourvu d'un palier (27') coaxial de chaque palier (27) des flasques primaires (21), conçus pour recevoir un arbre (23) formant chape avec un palier (5) du berceau (3).Device according to claim 2, characterized in that the connecting head (19) comprises two secondary flanges (24) parallel and external to the primary flanges (21), each secondary flange (24) being provided with a bearing (27 ') coaxial of each bearing (27) primary flanges (21), adapted to receive a shaft (23) forming a yoke with a bearing (5) of the cradle (3). Dispositif selon la revendication 3, caractérisé en ce que chaque flasque primaire (21) et chaque flasque secondaire (24) adjacent se placent de part et d'autre du berceau (3).Device according to claim 3, characterized in that each primary flange (21) and each adjacent secondary flange (24) are placed on either side of the cradle (3). Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que le berceau (3) présente deux paliers (4) coaxiaux conçus pour recevoir chacun un chapeau (17) destiné à maintenir sans jeu chacune des tiges (11,12) du vérin (7).Device according to one of claims 1 to 4, characterized in that the cradle (3) has two coaxial bearings (4) each designed to receive a cap (17) for maintaining without play each of the rods (11, 12) of the cylinder (7). Dispositif selon l'une des revendications 1 à 5, caractérisé en ce qu'il comprend un carter central (30) qui recouvre le berceau (3) dans sa partie située entre les flasques primaires (21)Device according to one of claims 1 to 5, characterized in that it comprises a central casing (30) which covers the cradle (3) in its part located between the primary flanges (21) Dispositif selon la revendication 6, caractérisé en ce que deux carters latéraux (31) recouvrent le berceau (3) dans ses deux zones délimitées par un flasque primaire (21) et le berceau (3).Device according to claim 6, characterized in that two side casings (31) cover the cradle (3) in its two zones delimited by a primary flange (21) and the cradle (3). Dispositif selon l'une des revendications 1 à 7, caractérisé en ce que chacun des flasques primaires (21) présente une forme circulaire centrée sur l'axe de rotation (Δ).Device according to one of claims 1 to 7, characterized in that each of the primary flanges (21) has a circular shape centered on the axis of rotation (Δ). Dispositif selon l'une des revendications 1 à 8, caractérisé en ce qu'un conduit d'alimentation (14) de chacune des chambres (8,9) est ménagé dans chaque tige (11,12) et chaque chapeau (17) correspondant.Device according to one of claims 1 to 8, characterized in that a supply duct (14) of each of the chambers (8, 9) is formed in each rod (11, 12) and each corresponding cap (17) .
EP09157821A 2008-04-14 2009-04-10 Device for tilting a tool and, in particular a bucket of a construction machine Withdrawn EP2110481A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0802046A FR2929968B1 (en) 2008-04-14 2008-04-14 DEVICE FOR TILTING A TOOL AND IN PARTICULAR A BUCKET OF A PUBLIC WORKS MACHINE

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DE202010016242U1 (en) * 2010-12-06 2014-02-13 Liebherr-Hydraulikbagger Gmbh cover

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1468472A (en) 1965-02-18 1967-02-03 Orenstein & Koppel Ag Leveling device for excavator buckets
US5694710A (en) * 1994-05-11 1997-12-09 Mieger; Rolf Hydraulically swung trenching shovel
US6260470B1 (en) * 1998-05-12 2001-07-17 Rolf Mieger Hydraulic piston-cylinder-unit for a slewing drive
EP1688546A2 (en) * 2005-01-27 2006-08-09 GUSELLA, Enzo Fluid cylinder, preferably for actuating a grab bucket
WO2007058545A1 (en) * 2005-11-15 2007-05-24 J B Sales International Limited Bucket fabrication

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4678705B2 (en) * 2000-11-29 2011-04-27 株式会社小松製作所 Hydraulically driven work machine
US7182546B1 (en) * 2003-04-07 2007-02-27 Jrb Attachments, Llc Coupler components and coupling System for front-end loader

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1468472A (en) 1965-02-18 1967-02-03 Orenstein & Koppel Ag Leveling device for excavator buckets
US5694710A (en) * 1994-05-11 1997-12-09 Mieger; Rolf Hydraulically swung trenching shovel
US6260470B1 (en) * 1998-05-12 2001-07-17 Rolf Mieger Hydraulic piston-cylinder-unit for a slewing drive
EP1688546A2 (en) * 2005-01-27 2006-08-09 GUSELLA, Enzo Fluid cylinder, preferably for actuating a grab bucket
WO2007058545A1 (en) * 2005-11-15 2007-05-24 J B Sales International Limited Bucket fabrication

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FR2929968A1 (en) 2009-10-16

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