EP1278915A1 - Fast coupling element for fixing a tool to the end of a loading arm or the like - Google Patents

Fast coupling element for fixing a tool to the end of a loading arm or the like

Info

Publication number
EP1278915A1
EP1278915A1 EP01928032A EP01928032A EP1278915A1 EP 1278915 A1 EP1278915 A1 EP 1278915A1 EP 01928032 A EP01928032 A EP 01928032A EP 01928032 A EP01928032 A EP 01928032A EP 1278915 A1 EP1278915 A1 EP 1278915A1
Authority
EP
European Patent Office
Prior art keywords
parts
hooks
shaft
locked
quick coupler
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.)
Granted
Application number
EP01928032A
Other languages
German (de)
French (fr)
Other versions
EP1278915B1 (en
Inventor
Alain Husson
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.)
KLAC Industrie SAS
Original Assignee
KLAC Industrie SAS
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 KLAC Industrie SAS filed Critical KLAC Industrie SAS
Publication of EP1278915A1 publication Critical patent/EP1278915A1/en
Application granted granted Critical
Publication of EP1278915B1 publication Critical patent/EP1278915B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • E02F3/3613—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with means for absorbing any play therebetween
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3627—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with a hook and a longitudinal locking element

Definitions

  • TITLE Quick coupler to attach a tool to the end of the arm of a loader or the like
  • the present invention relates to improvements to quick couplers for attaching a tool, such as a bucket, to the end of the arm of a loader.
  • a quick coupler has two separate parts, one of which is made integral with the arm and will be referred to as a hooking member, while the other, which can cooperate with the first, results from a modification of the 'tool or is constituted by a part made integral with the tool and will be referred to below as "adapter".
  • one of the parts comprises a hook-shaped cradle capable of gripping a shaft carried by the other part, the two said parts being applied against one another by a judicious rotation of one of between them around the axis of the aforementioned tree. In most cases this rotation triggers the implementation of an automatic locking device.
  • an automatic locking device Such a device is described, in particular, in European patent No. 438931 or in French patent application No. 99 12671 of October 12, 1999.
  • the adapter is in the form of a stirrup against the fields of the wings from which the fastening member is supported at the end of its rotation.
  • the contacts are made on two oblique surfaces arranged in vee.
  • This device is not entirely satisfactory. Indeed, as it is used in a dirty environment, composed of earth, clay and pebbles forming a conglomerate likely to adhere to the metal parts, it was found that before locking the tool, s' ensure the cleanliness of the device and remove all impurities likely to be between surfaces to be contacted. In fact, if contact is not complete, locking is made impossible.
  • the contacts between the two parts of the quick coupler take place at points which are distant from the common pivot axis of the two said parts.
  • FIG 1 is an elevational view of a quick coupler according to the invention applied to the attachment of a bucket at the end of the arm of a loader;
  • FIG. 2 is a view, similar to FIG. 1, showing a later phase of the attachment
  • FIG. 3 is a view on a larger scale and limited to the fastener showing the latter in the tool locking position;
  • FIG. 4 is a view in vertical section of the adapter
  • FIG. 5 is the left view of FIG. 4;
  • FIG 6 is a sectional view taken along the line Vl-Vl of Figure 4;
  • FIG. 7 is an elevation view of the attachment member
  • FIG. 8 is the left view of FIG. 7;
  • FIG. 9 is a sectional view taken along line IX-IX of FIG. 7.
  • FIGS. 10 and 11 are sectional views taken respectively along lines XX and XI-XI of FIG. 3, the sectional views being straightened.
  • the quick coupler has two parts 1 and 2.
  • Part 1 which constitutes the attachment member, is articulated by a shaft 3 at the end of the arm 4 of a mechanical shovel and it can pivot around the axis of this tree.
  • Part 2, or adapter, is made integral with a bucket
  • the means used to lock part 1 on part 2 are identical to those described in French patent application No. 99 12671.
  • the part 2 has an extension 6, in the form of a hook, capable of passing through an orifice in the middle part 7 of the part 1 in order to unlock a locking plate 8 which, under the action of springs 9 (see fig. 7), fits under the shoulder 6a of the hook 6.
  • Part 1 has, at least, an extension 10 for supporting a shaft 11 extending on either side of said extension.
  • Part 2 has two hooks 12 providing sufficient space between them to allow passage of the extension 10. It should be noted that, when the tool 5 rests on the ground, the hooks 12 open downwards which prevents earth from stagnating in the hollows of said hooks.
  • the contact between the parts 1 and 2 although taking place in the known manner along two surfaces arranged in a Vee, takes place over a very reduced portion 13 situated opposite the hooks 12.
  • the piece 1 has, over a length at least equal to the length L, oblique spans 14, the angle A which, in FIG. 9, is that formed by each oblique span and the horizontal, being equal to that B which , in Figure 6, is that formed by the surface 13 and the horizontal.
  • Each surface 13 is extended by a surface 15 which forms with the horizontal (fig. 6) an angle C greater than that B.
  • this drawback is remedied by providing means which oppose any relative movement between the hooks 12 and the shaft 11 when the two parts are locked to one another.
  • the part 1 has, in line with the shaft 11, a concave stop 17 formed by a cylindrical surface with circular director centered on the axis of the shaft 1 1.
  • One of the hooks 12 at least has an outer portion 12a constituted by a cylindrical surface with circular director which, in the case of FIG. 2, is centered on the axis of the shaft 11 and whose radius is, apart from the functional clearance, equal to that of the directrix of the surface forming the stop 17.
  • the portion 12a is connected, without continuity, to a portion 12b whose distance from the aforementioned axis decreases to its end 12c.
  • the means described so far have the effect of opposing the appearance of games which can cause the parts 1 and 2 to move in a vertical plane. As the bearing surfaces 13 are reduced, it is important to provide means to compensate for the lack of lateral guidance.
  • the external faces 18 of the extension 10 and those internal 19 of the hooks 12 are strongly stripped, being observed that the distance d measured at the birth of said hooks is equal, to the nearest functional clearance, at the distance D measured at the birth of the extension 10.

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)
  • Clamps And Clips (AREA)
  • Flanged Joints, Insulating Joints, And Other Joints (AREA)
  • Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
  • Manipulator (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Automatic Tool Replacement In Machine Tools (AREA)
  • Gripping On Spindles (AREA)

Abstract

The invention concerns a fast coupling element comprising two parts, one of which is borne by the arm of the device and the other borne by the tool, one of the parts comprising a spindle (11) capable by a movement of said arm to penetrate into hooks, forming open blocks, of the other part and comprising means for maintaining said parts interlocked along contact surfaces arranged in a V-shape. The invention is characterised in that the contact between the two parts occurs in points (13) away from said spindle (11).

Description

TITRE : Attache rapide pour fixer un outil à l'extrémité du bras d'un chargeur ou analogueTITLE: Quick coupler to attach a tool to the end of the arm of a loader or the like
La présente invention est relative à des perfectionnements aux attaches rapides pour fixer un outil, tel qu'un godet, à l'extrémité du bras d'un chargeur.The present invention relates to improvements to quick couplers for attaching a tool, such as a bucket, to the end of the arm of a loader.
De la façon connue, une attache rapide comporte deux parties distinctes, dont l'une est rendue solidaire du bras et sera dénommée organe d'accrochage, tandis que l'autre, qui peut coopérer avec la première, résulte d'une modification de l'outil ou est constituée par une pièce rendue solidaire de l'outil et sera dénommée ci-après "adaptateur".In known manner, a quick coupler has two separate parts, one of which is made integral with the arm and will be referred to as a hooking member, while the other, which can cooperate with the first, results from a modification of the 'tool or is constituted by a part made integral with the tool and will be referred to below as "adapter".
Plus précisément, l'une des parties comporte un berceau en forme de crochet susceptible de saisir un arbre porté par l'autre partie, les deux dites parties étant appliquées l'une contre l'autre par une rotation judicieuse de l'une d'entre elles autour de l'axe de l'arbre précité. Dans la plupart des cas cette rotation déclenche la mise en oeuvre d'un dispositif de verrouillage automatique. Un tel dispositif est décrit, notamment, dans le brevet européen N° 438931 ou dans la demande de brevet français N°99 12671 du 12 octobre 1999.More specifically, one of the parts comprises a hook-shaped cradle capable of gripping a shaft carried by the other part, the two said parts being applied against one another by a judicious rotation of one of between them around the axis of the aforementioned tree. In most cases this rotation triggers the implementation of an automatic locking device. Such a device is described, in particular, in European patent No. 438931 or in French patent application No. 99 12671 of October 12, 1999.
Dans le dispositif décrit dans la demande de brevet français précitée, l'adaptateur se présente sous la forme d'un étrier contre les champs des ailes duquel l'organe d'accrochage prend appui à la fin de sa rotation. Pour s'opposer à la création de jeux entre les deux pièces, les contacts s'effectuent selon deux surfaces obliques disposées en vé. Ce dispositif ne donne pas entière satisfaction. En effet, comme il est utilisé dans un milieu salissant, composé de terre, de glaise et de cailloux formant un conglomérat susceptible d'adhérer aux parties métalliques, on a constaté qu'il fallait, avant le verrouillage de l'outil, s'assurer de la propreté du dispositif et éliminer toutes les impuretés susceptibles de se trouver entre des surfaces devant être mises en contact. En effet, si le contact n'est pas total le verrouillage est rendu impossible.In the device described in the aforementioned French patent application, the adapter is in the form of a stirrup against the fields of the wings from which the fastening member is supported at the end of its rotation. To oppose the creation of games between the two parts, the contacts are made on two oblique surfaces arranged in vee. This device is not entirely satisfactory. Indeed, as it is used in a dirty environment, composed of earth, clay and pebbles forming a conglomerate likely to adhere to the metal parts, it was found that before locking the tool, s' ensure the cleanliness of the device and remove all impurities likely to be between surfaces to be contacted. In fact, if contact is not complete, locking is made impossible.
Selon l'invention, qui remédie à cet inconvénient, les contacts entre les deux pièces de l'attache rapide ont lieu en des points qui sont éloignés de l'axe commun de pivotement des deux dites pièces.According to the invention, which overcomes this drawback, the contacts between the two parts of the quick coupler take place at points which are distant from the common pivot axis of the two said parts.
La présente invention sera mieux comprise par la description qui va suivre faite en se référant aux dessins annexés à titre d'exemple indicatif, seulement sur lesquels :The present invention will be better understood from the following description made with reference to the accompanying drawings by way of indicative example, only in which:
-la figure 1 est une vue en élévation d'une attache rapide conforme à l'invention appliquée à la fixation d'un godet à l'extrémité du bras d'un chargeur;FIG 1 is an elevational view of a quick coupler according to the invention applied to the attachment of a bucket at the end of the arm of a loader;
-la figure 2 est une vue, analogue à la figure 1 , montrant une phase ultérieure de l'accrochage;FIG. 2 is a view, similar to FIG. 1, showing a later phase of the attachment;
-la figure 3 est une vue à plus grande échelle et limitée à l'attache montrant celle-ci en position de verrouillage de l'outil;FIG. 3 is a view on a larger scale and limited to the fastener showing the latter in the tool locking position;
-la figure 4 est une vue en coupe verticale de l'adaptateur;FIG. 4 is a view in vertical section of the adapter;
-la figure 5 est la vue de gauche de la figure 4; -la figure 6 est une vue en coupe effectuée selon la ligne Vl-Vl de la figure 4;FIG. 5 is the left view of FIG. 4; FIG 6 is a sectional view taken along the line Vl-Vl of Figure 4;
-la figure 7 est une vue en élévation de l'organe d'accrochage;FIG. 7 is an elevation view of the attachment member;
-la figure 8 est la vue de gauche de la figure 7;FIG. 8 is the left view of FIG. 7;
-la figure 9 est une vue en coupe effectuée selon la ligne IX-IX de la figure 7. -les figures 10 et 11 sont des vues en coupe effectuées respectivement selon les lignes X-X et XI-XI de la figure 3, les vues en coupe étant redressées.FIG. 9 is a sectional view taken along line IX-IX of FIG. 7. FIGS. 10 and 11 are sectional views taken respectively along lines XX and XI-XI of FIG. 3, the sectional views being straightened.
Da la façon connue, l'attache rapide comporte deux parties 1 et 2. La partie 1 , qui constitue l'organe d'accrochage, est articulée, par un arbre 3 à l'extrémité du bras 4 d'une pelle mécanique et elle peut pivoter autour de l'axe de cet arbre. La partie 2, ou adaptateur, est rendue solidaire, d'un godetIn the known manner, the quick coupler has two parts 1 and 2. Part 1, which constitutes the attachment member, is articulated by a shaft 3 at the end of the arm 4 of a mechanical shovel and it can pivot around the axis of this tree. Part 2, or adapter, is made integral with a bucket
5, par exemple.5, for example.
D'une façon générale, les moyens utilisés pour verrouiller la partie 1 sur celle 2 sont identiques à ceux décrits dans la demande de brevet français N°99 12671 . Cela signifie que la partie 2 présente une extension 6, en forme de crochet, susceptible de traverser un orifice de la partie médiane 7 de la pièce 1 pour déverrouiller une plaque de verrouillage 8 qui, sous l'action de ressorts 9 (voir fig.7), s'insère sous l'épaulement 6a du crochet 6.In general, the means used to lock part 1 on part 2 are identical to those described in French patent application No. 99 12671. This means that the part 2 has an extension 6, in the form of a hook, capable of passing through an orifice in the middle part 7 of the part 1 in order to unlock a locking plate 8 which, under the action of springs 9 (see fig. 7), fits under the shoulder 6a of the hook 6.
La partie 1 présente, au moins, une extension 10 de support d'un arbre 1 1 s'étendant de part et d'autre de ladite extension. La partie 2 présente deux crochets 12 ménageant entre eux un espace suffisant pour permettre le passage de l'extension 10. Il est à noter que, lorsque l'outil 5 repose sur le sol, les crochets 12 s'ouvrent vers le bas ce qui évite que de la terre stagne dans les creux desdits crochets.Part 1 has, at least, an extension 10 for supporting a shaft 11 extending on either side of said extension. Part 2 has two hooks 12 providing sufficient space between them to allow passage of the extension 10. It should be noted that, when the tool 5 rests on the ground, the hooks 12 open downwards which prevents earth from stagnating in the hollows of said hooks.
Par une manœuvre judicieuse du bras 4 on engage l'extension 10 entre les crochets 12, puis on soulève le godet (fig.2) tout en faisant pivoter la pièce 1 autour de l'axe de l'arbre 11 pour amener cette dernière dans la position représentée sur la figure 3, qui correspond à celle de verrouillage du godet, la pièce 1 étant appliquée contre celle 2. Durant la rotation précitée, il est nécessaire que rien ne s'oppose au contact entre les deux pièces 1 et 2 car, autrement, la plaque de verrouillage ne peut pas s'insérer sous la partie 6a du crochet 6.By a judicious maneuver of the arm 4, the extension 10 is engaged between the hooks 12, then the bucket is lifted (fig. 2) while pivoting the part 1 around the axis of the shaft 11 to bring the latter into the position shown in FIG. 3, which corresponds to that of locking the bucket, the part 1 being applied against that 2. During the aforementioned rotation, it is necessary that nothing prevents contact between the two parts 1 and 2 because, otherwise, the locking plate cannot be inserted under the part 6a of the hook 6.
Dans les dispositif connus, le contact entre les deux pièces 1 et 2 s'effectue selon une longueur L (fig.2) qui est très importante et si de la terre adhère à l'une ou l'autre des surfaces devant entrer en- contact dans une zone située près de l'arbre 11 , le verrouillage entre les pièces 1 et 2 sera impossible.In known devices, the contact between the two parts 1 and 2 takes place over a length L (fig. 2) which is very large and if soil adheres to one or the other of the surfaces which must enter contact in an area near shaft 11, locking between parts 1 and 2 will be impossible.
Selon l'invention, le contact entre les pièces 1 et 2, bien que s'effectuant de la façon connue selon deux surfaces disposées en Vé, a lieu sur une portion très réduite 13 située à l'opposé des crochets 12.According to the invention, the contact between the parts 1 and 2, although taking place in the known manner along two surfaces arranged in a Vee, takes place over a very reduced portion 13 situated opposite the hooks 12.
La pièce 1 présente, sur une longueur au moins égale à la longueur L, des portées obliques 14, l'angle A qui, sur la figure 9, est celui formé par chaque portée oblique et l'horizontale, étant égal à celui B qui, sur la figure 6, est celui formé par la surface 13 et l'horizontale.The piece 1 has, over a length at least equal to the length L, oblique spans 14, the angle A which, in FIG. 9, is that formed by each oblique span and the horizontal, being equal to that B which , in Figure 6, is that formed by the surface 13 and the horizontal.
Chaque surface 13 se prolonge par une surface 15 qui forme avec l'horizontale (fig.6) un angle C supérieur à celui B.Each surface 13 is extended by a surface 15 which forms with the horizontal (fig. 6) an angle C greater than that B.
Il est à noter que les bords supérieurs des surfaces 13 et 15 correspondante sont dans le prolongement l'un de l'autre. De ce fait, et comme cela ressort des figures 10 et 1 1 , l'espace qui subsiste entre les pièces 1 et 2 assemblées est obturé latéralement de façon à s'opposer à l'introduction intempestive de terre et autres. Comme cela ressort de la figure 11 , si des impuretés sont présentes sur l'une ou l'autre des surfaces 15 ou 14, celles-ci peuvent se loger dans l'espace 16 subsistant -entre les deux pièces 1 et 2 et s'étendant sur la majeure partie de la longueur de la pièce 2.It should be noted that the upper edges of the corresponding surfaces 13 and 15 are in line with one another. Therefore, and as is apparent from Figures 10 and 1 1, the space which remains between the parts 1 and 2 assembled is closed laterally so as to oppose the untimely introduction of earth and others. As can be seen from FIG. 11, if impurities are present on one or the other of the surfaces 15 or 14, these can become lodged in the space 16 remaining - between the two parts 1 and 2 and s' extending over most of the length of the part 2.
En réduisant l'importance des surfaces en contact on favorise, intempestivement, l'apparition de jeux destructeurs.By reducing the size of the surfaces in contact, it inadvertently promotes the appearance of destructive play.
Selon l'invention, on remédie à cet inconvénient en prévoyant des moyens qui s'oppose à tout déplacement relatif entre les crochets 12 et l'arbre 11 lorsque les deux pièces sont verrouillées l'une sur l'autre.According to the invention, this drawback is remedied by providing means which oppose any relative movement between the hooks 12 and the shaft 11 when the two parts are locked to one another.
Selon un mode de réalisation, la pièce 1 présente, au droit de l'arbre 11 , une butée 17 concave formée par une surface cylindrique à directrice circulaire centrée sur l'axe de l'arbre 1 1. L'un des crochets 12, au moins, présente une portion extérieure 12a constituée par une surface cylindrique à directrice circulaire qui, dans le cas de la figure 2, est centrée sur l'axe de l'arbre 11 et dont le rayon est, au jeu fonctionnel près, égal à celui de la directrice de la surface formant la butée 17. La portion 12a se raccorde, sans solution de continuité, à une portion 12b dont la distance à l'axe précité décroît jusqu'à son extrémité 12c.According to one embodiment, the part 1 has, in line with the shaft 11, a concave stop 17 formed by a cylindrical surface with circular director centered on the axis of the shaft 1 1. One of the hooks 12, at least has an outer portion 12a constituted by a cylindrical surface with circular director which, in the case of FIG. 2, is centered on the axis of the shaft 11 and whose radius is, apart from the functional clearance, equal to that of the directrix of the surface forming the stop 17. The portion 12a is connected, without continuity, to a portion 12b whose distance from the aforementioned axis decreases to its end 12c.
De cette façon et comme cela ressort de la figure 3, lorsque les pièces 1 et 2 sont verrouillées l'une sur l'autre, la portion 12a est disposée en regard de la butée 17 et aucun déplacement n'est possible à ce niveau.In this way and as can be seen from FIG. 3, when the parts 1 and 2 are locked one on the other, the portion 12a is disposed opposite the stop 17 and no displacement is possible at this level.
Les moyens décrits jusqu'à présent ont pour effet de s'opposer à l'apparition de jeux pouvant entraîner un déplacement des pièces 1 et 2 dans un plan vertical. Comme les surfaces d'appui 13 sont réduites, il importe de prévoir des moyens pour compenser le manque de guidage latéral.The means described so far have the effect of opposing the appearance of games which can cause the parts 1 and 2 to move in a vertical plane. As the bearing surfaces 13 are reduced, it is important to provide means to compensate for the lack of lateral guidance.
Selon l'invention et comme cela ressort de la figure 8 et 5, les faces externes 18 de l'extension 10 et celles internes 19 des crochets 12 sont fortement dépouillées étant fait observer que la distance d mesurée à là naissance desdits crochets est égale, au jeu fonctionnel près, à la distance D mesurée à la naissance de l'extension 10.According to the invention and as can be seen from FIGS. 8 and 5, the external faces 18 of the extension 10 and those internal 19 of the hooks 12 are strongly stripped, being observed that the distance d measured at the birth of said hooks is equal, to the nearest functional clearance, at the distance D measured at the birth of the extension 10.
De cette façon, on constate qu'un jeu important existe à l'instant où l'arbre va pénétrer dans les crochets 12 et que ce jeu va diminuer durant la rotation de la pièce 1 pour être nul lorsque les deux pièces 1 et 2 sont verrouillées l'une sur l'autre. In this way, it can be seen that a large clearance exists at the moment when the shaft will penetrate the hooks 12 and that this clearance will decrease during the rotation of the part 1 to be zero when the two parts 1 and 2 are locked to each other.

Claims

REVENDICATIONS
1 -Attache rapide comportant deux parties (1 ) et (2), dont l'une est portée par le bras (4) de l'engin et dont l'autre est portée par l'outil, l'une des parties comportant un arbre (11) susceptible par un déplacement dudit bras de pénétrer dans des crochets (12), formant des paliers ouverts, de l'autre partie et comportant des moyens pour maintenir les deux - dites parties verrouillées l'une sur l'autre selon des surfaces de contact disposées en Vé, caractérisée en ce que le contact entre les deux pièces a lieu en des points qui sont éloignés de l'arbre (11) précité.1 -Quick coupler comprising two parts (1) and (2), one of which is carried by the arm (4) of the machine and the other of which is carried by the tool, one of the parts comprising a shaft (11) capable of moving said arm to penetrate hooks (12), forming open bearings, of the other part and comprising means for holding the two - said parts locked one on the other according to contact surfaces arranged in a V shape, characterized in that the contact between the two parts takes place at points which are distant from the aforementioned shaft (11).
2-Attache rapide selon la revendication 1 , caractérisée en ce que l'adaptateur (2) présente des surfaces d'appui (13), de dimensions réduites par rapport aux surfaces d'appui prévues sur l'organe d'accrochage, situées à l'opposé des crochets (12).2-Quick coupler according to claim 1, characterized in that the adapter (2) has bearing surfaces (13), of reduced dimensions compared to the bearing surfaces provided on the attachment member, located at opposite the hooks (12).
3-Attache rapide selon l'une quelconque des revendications 1 ou 2, caractérisée en ce que des moyens sont prévus pour s'opposer au déplacement des crochets (12) par rapport à l'arbre correspondant (11), ou inversement, lorsque les deux pièces de l'attache sont verrouillées l'une sur l'autre.3-Quick coupler according to any one of claims 1 or 2, characterized in that means are provided to oppose the movement of the hooks (12) relative to the corresponding shaft (11), or vice versa, when the two pieces of the fastener are locked one on the other.
4-Attache rapide selon la revendication 3, caractérisée en ce qu'une butée concave (17), au moins, est prévue au droit de l'arbre (11), ladite butée épousant, sans jeu, la partie correspondante du crochet lorsque les deux pièces formant l'attache sont verrouillées l'une sur l'autre.4-Quick coupler according to claim 3, characterized in that a concave stop (17), at least, is provided in line with the shaft (11), said stop fitting, without play, the corresponding part of the hook when the two pieces forming the fastener are locked one on the other.
5-Attache selon l'une quelconque des revendications 1 à 3, caractérisée en ce que des moyens sont prévus sur les faces latérales internes des crochets et sur celles externes de l'extension (10) pour immobiliser latéralement les deux pièces, ces moyens entrant en action seulement lorsque les deux dites pièces sont verrouillées l'une sur l'autre. 5-fastener according to any one of claims 1 to 3, characterized in that means are provided on the internal lateral faces of the hooks and on those external of the extension (10) to immobilize the two parts laterally, these means coming into action only when the two said parts are locked to one another.
EP01928032A 2000-05-03 2001-04-23 Fast coupling element for fixing a tool to the end of a loading arm or the like Expired - Lifetime EP1278915B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0005606 2000-05-03
FR0005606A FR2808542B1 (en) 2000-05-03 2000-05-03 QUICK ATTACHMENT FOR ATTACHING A TOOL AT THE END OF THE ARM OF A LOADER OR THE LIKE
PCT/FR2001/001235 WO2001083893A1 (en) 2000-05-03 2001-04-23 Fast coupling element for fixing a tool to the end of a loading arm or the like

Publications (2)

Publication Number Publication Date
EP1278915A1 true EP1278915A1 (en) 2003-01-29
EP1278915B1 EP1278915B1 (en) 2005-03-02

Family

ID=8849815

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01928032A Expired - Lifetime EP1278915B1 (en) 2000-05-03 2001-04-23 Fast coupling element for fixing a tool to the end of a loading arm or the like

Country Status (6)

Country Link
EP (1) EP1278915B1 (en)
AT (1) ATE290134T1 (en)
AU (1) AU2001254902A1 (en)
DE (1) DE60109149D1 (en)
FR (1) FR2808542B1 (en)
WO (1) WO2001083893A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005056505B3 (en) * 2005-11-28 2007-02-08 Robert Riedlberger Quick-change fixing device for tools has centring discs fixed on catch bolt and a control plate fixed on a counter member so that complete engagement of device is only possible when bolt has reached lowest position in catch hook

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3556323A (en) * 1968-12-23 1971-01-19 Damian M Heimmermann Quick-connect coupler for bucket on excavating machine
US4311428A (en) * 1979-05-16 1982-01-19 Wain-Roy, Inc. Connectors
NL170447C (en) * 1979-06-01 1984-03-16 Bofors Nederland Device for coupling a tool to a boom using an intermediate piece and a coupling piece.
US4871292A (en) * 1987-12-17 1989-10-03 Richard Milanowski System for attaching and locking material handling tools to a dipper boom
NL9101150A (en) * 1991-07-02 1993-02-01 Verachtert Bv COUPLER.
NL1003097C2 (en) * 1996-05-13 1997-11-18 Den Heuvel Werkendam B V Van Coupling between implement, e.g. excavator bucket, and excavator boom
US5915837A (en) * 1997-05-27 1999-06-29 Caterpillar Inc. Quick-disconnect coupling device
US5890871A (en) * 1997-12-10 1999-04-06 Caterpillar Inc. Latching mechanism for a quick coupler

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0183893A1 *

Also Published As

Publication number Publication date
FR2808542B1 (en) 2003-03-07
EP1278915B1 (en) 2005-03-02
FR2808542A1 (en) 2001-11-09
AU2001254902A1 (en) 2001-11-12
DE60109149D1 (en) 2005-04-07
ATE290134T1 (en) 2005-03-15
WO2001083893A1 (en) 2001-11-08

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