WO2013007885A1 - Safety device for quick-fit attachments used for fitting a tool to the end of the arm of a hydraulic excavator - Google Patents

Safety device for quick-fit attachments used for fitting a tool to the end of the arm of a hydraulic excavator Download PDF

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Publication number
WO2013007885A1
WO2013007885A1 PCT/FR2012/000207 FR2012000207W WO2013007885A1 WO 2013007885 A1 WO2013007885 A1 WO 2013007885A1 FR 2012000207 W FR2012000207 W FR 2012000207W WO 2013007885 A1 WO2013007885 A1 WO 2013007885A1
Authority
WO
WIPO (PCT)
Prior art keywords
tool
machine
arm
notch
finger
Prior art date
Application number
PCT/FR2012/000207
Other languages
French (fr)
Inventor
Marcel Morin
Fabrice FAUBRE
Original Assignee
Klac Industrie
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 filed Critical Klac Industrie
Priority to US14/232,129 priority Critical patent/US20140241786A1/en
Priority to EP12732687.4A priority patent/EP2732102B1/en
Publication of WO2013007885A1 publication Critical patent/WO2013007885A1/en

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
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3627—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with a hook and a longitudinal locking element
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3645—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with auto-engagement means for automatic snap-on of the tool coupler part
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/24—Safety devices, e.g. for preventing overload
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/16—Joints and connections with adjunctive protector, broken parts retainer, repair, assembly or disassembly feature

Definitions

  • Safety device for quick couplers for attaching a tool to the end of the arm of a hydraulic excavator.
  • a quick coupler is a device for attaching a tool to the end of the arm of a hydraulic excavator, or the like, hereinafter referred to as the machine.
  • a quick coupler is a mechanical device comprising two parts, one of which is attached to the tool, one bucket for example, while the other is carried by the arm of the machine.
  • a fastener whose first part, substantially stirrup-shaped and integral with the arm of the machine comprises a cradle, formed by a pair of hooks, which can be inserted under a shaft of the second part carried by the tool.
  • the second part has a hook-shaped extension which can pass through an opening of the first part and an opening of a sliding locking plate which can be inserted under the said extension when the two parts are applied against each other. 'other.
  • Means are provided for maintaining the locking plate in "armed position", that is to say in a position where the hook-shaped extension can freely traverse the middle portion of the first portion and the locking. When crossing the two openings, the hook-shaped extension releases the locking plate which, under the action of springs, fits under said extension.
  • a quick coupler is designed to be used with a range of machines having different sizes (and therefore different weights). It is also known that a machine must not move a load, including tool, whose weight exceeds 1 5%, approximately, the weight of the latter. In this case, the load being excessive, the machine can rock and cause an accident. In the current state of the art, it is clear that a "small machine” can seize and manipulate a bucket whose load exceeds the capacity of the latter.
  • the present invention which aims to overcome this drawback, relates to a safety device that positively prevents the locking of a bucket whose weight load exceeds that of the machine.
  • each part of the fastener has a member that can cooperate with an organ of the other part if the weight of the tool under load does not exceed the capacity of the machine, the cooperation being impossible in the contrary case so as to oppose the application of the first part on the second and prevent locking.
  • FIG 1 shows, in vertical section and in perspective, the two parts of the fastener before the start of the attachment
  • FIG 2 is a view similar to that 1, showing the two parts of the fastener at the beginning of the attachment;
  • FIG 3 is a perspective view showing the bucket locked on the machine, the locking plate not being shown;
  • FIGS. 4 to 7 are schematic views explaining the operation of the safety device of the invention.
  • FIGS. 8 and 9 are schematic views similar to those 4 and 7, showing an alternative embodiment.
  • the fastener comprises two parts 1 and 2, that 1 being fixed to the arm of the machine (not shown) while that 2 is fixed to the upper part of the bucket G.
  • Part 1 has a pair of hooks 3 can grasp, by a judicious operation of the arm of the machine, a shaft 4, carried by the part 2, and lift the bucket.
  • the usual extension 5 passes through the opening of the middle part of the part 1 and the opening of the locking plate 6 by releasing the latter, which when both parts are applied against the other slide according to the arrow Fz to fit under said extension 5.
  • the part 1 has a member constituted by a finger 7 which can fit freely in a member constituted by a notch 8 of the part 2, the dimensions of these two members depending on the size of the machine and the bucket so that the finger carried by a "small machine” can not penetrate the notch of a "big bucket", the opposite being naturally possible.
  • FIG. 4 shows a finger 7 whose width is substantially equal to the width of the notch 8, this finger can penetrate freely into said notch and the locking is possible.
  • the finger 7 is carried by a small machine and the notch 8 is carried by a small bucket.
  • Figure 5 shows a finger 7a, narrower than that 7, carried by a large machine. The finger 7a penetrating easily into the notch 8, the locking of a small bucket on a large machine is possible.
  • a large bucket is associated with a notch 8a, narrower than that 8, which can cooperate with a finger 7a.
  • a large bucket with which is associated a notch 8a, narrow can not be locked on a small machine which is associated with a finger 7 wider than said notch 8a.
  • the portion 1 is cut so as to have a projection 9 able to enter a housing 10 of the part 2 if the bucket to seize does not exceed the capacity of the machine.
  • FIG. 9 shows a bucket G whose weight, under load, exceeds the capacity of the machine and whose field 10a is offset relative to that 9a of the part 1 so that the projection 9, of the "small machine “Can not enter the housing 10 of a" big bucket ".
  • the safety device is arranged on the sides of the parts 1 and 2 extending parallel to the shaft 4, but a similar result could be obtained if this device was located on one, at the least, sides extending substantially orthogonally to said shaft.

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)
  • Component Parts Of Construction Machinery (AREA)

Abstract

Safety device for quick-fit attachments comprising two parts (1) and (2), of which one (1) is borne by the arm of the digger while the other (2) is secured to the tool (for example a dipper), said first part having a cradle (3) formed by a pair of hooks, able to grasp hold of a shaft (4) belonging to the second part in order to raise the tool and allow the first part to pivot so that the two parts can be pressed against one another to allow for locking, characterized in that each part of the attachment has a member (7) able to collaborate with a member (8) of the other part if the weight of the tool being picked up does not exceed the capacity of the digger, collaboration being impossible when such is not the case, so that the first part is unable to be pressed against the second and locking is prevented.

Description

Dispositif de sécurité pour attaches rapides permettant de fixer un outil à l'extrémité du bras d'une pelle hydraulique.  Safety device for quick couplers for attaching a tool to the end of the arm of a hydraulic excavator.
La présente invention est relative à un dispositif de sécurité pour les attaches rapides. Une attache rapide est un dispositif permettant de fixer un outil à l'extrémité du bras d'une pelle hydraulique, ou analogue, ci-après dénommée l'engin. The present invention relates to a safety device for quick couplers. A quick coupler is a device for attaching a tool to the end of the arm of a hydraulic excavator, or the like, hereinafter referred to as the machine.
Une attache rapide est un dispositif mécanique comportant deux parties dont l'une est fixée à l'outil, un godet par exemple, tandis que l'autre est portée par le bras de l'engin. A quick coupler is a mechanical device comprising two parts, one of which is attached to the tool, one bucket for example, while the other is carried by the arm of the machine.
L'état de la technique en la matière est constitué, notamment, par le document FR 2946061 . The state of the art in the field consists, in particular, of the document FR 2946061.
Dans ce document, il est décrit une attache dont la première partie, sensiblement en forme d'étrier et solidaire du bras de l'engin comporte un berceau, formé par une paire de crochets, pouvant s'insérer sous un arbre de la seconde partie portée par l'outil. In this document, there is described a fastener whose first part, substantially stirrup-shaped and integral with the arm of the machine comprises a cradle, formed by a pair of hooks, which can be inserted under a shaft of the second part carried by the tool.
La seconde partie présente une extension, en forme de crochet, pouvant traverser une ouverture de la première partie et une ouverture d'une plaque de verrouillage coulissante, susceptible de s'insérer sous ladite extension lorsque les deux parties sont appliquées l'une contre l'autre. The second part has a hook-shaped extension which can pass through an opening of the first part and an opening of a sliding locking plate which can be inserted under the said extension when the two parts are applied against each other. 'other.
Des moyens sont prévus pour maintenir la plaque de verrouillage en « position armée », c'est-à-dire dans une position où l'extension, en forme de crochet, peut traverser librement la portion médiane de la première partie et la plaque de verrouillage. Lors de la traversée des deux ouvertures, l'extension en forme de crochet libère la plaque de verrouillage qui, sous l'action de ressorts, s'insère sous ladite extension. Means are provided for maintaining the locking plate in "armed position", that is to say in a position where the hook-shaped extension can freely traverse the middle portion of the first portion and the locking. When crossing the two openings, the hook-shaped extension releases the locking plate which, under the action of springs, fits under said extension.
En général une attache rapide est conçue pour pouvoir être utilisée avec une gamme d'engins présentant des tailles différentes (donc des poids différents). On sait par ailleurs, qu'un engin ne doit pas déplacer une charge, outil compris, dont le poids excède 1 5%, environ, du poids de ce dernier. Dans ce cas, la charge étant excessive, l'engin peut basculer et provoquer un accident. En l'état actuel de la technique, force est de constater qu'un « petit engin » peut saisir et manipuler un godet dont la charge excède la capacité de ce dernier. In general, a quick coupler is designed to be used with a range of machines having different sizes (and therefore different weights). It is also known that a machine must not move a load, including tool, whose weight exceeds 1 5%, approximately, the weight of the latter. In this case, the load being excessive, the machine can rock and cause an accident. In the current state of the art, it is clear that a "small machine" can seize and manipulate a bucket whose load exceeds the capacity of the latter.
La présente invention, qui à pour but de remédier à cet inconvénient, concerne un dispositif de sécurité qui empêche de façon positive le verrouillage d'un godet dont le poids en charge excède celui de l'engin. The present invention, which aims to overcome this drawback, relates to a safety device that positively prevents the locking of a bucket whose weight load exceeds that of the machine.
Comme on sait que le verrouillage d'un godet ne peut intervenir qu'à la condition que les deux parties de l'attache soient appliquées l'une contre l'autre, le dispositif de sécurité de l'invention met en œuvre des moyens ayant pour effet de s'opposer à cette application si le godet à saisir excède les capacités de l'engin. Selon l'invention, chaque partie de l'attache présente un organe pouvant coopérer avec un organe de l'autre partie si le poids de l'outil en charge n'excède pas la capacité de l'engin, la coopération étant impossible dans le cas contraire de façon à s'opposer à l'application de la première partie sur la seconde et empêcher le verrouillage. As it is known that the locking of a bucket can only take place provided that the two parts of the fastener are applied against each other, the safety device of the invention implements means having to oppose this application if the grab bucket exceeds the capacity of the machine. According to the invention, each part of the fastener has a member that can cooperate with an organ of the other part if the weight of the tool under load does not exceed the capacity of the machine, the cooperation being impossible in the contrary case so as to oppose the application of the first part on the second and prevent locking.
La présente invention sera mieux comprise par la description qui va suivre faire 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 given with reference to the accompanying drawings by way of example only, in which:
-la figure 1 , montre, en coupe verticale et en perspective, les deux parties de l'attache avant le début de l'accrochage ;  FIG 1 shows, in vertical section and in perspective, the two parts of the fastener before the start of the attachment;
-la figure 2 est une vue analogue à celle 1 , montrant les deux parties de l'attache au début de l'accrochage ;  FIG 2 is a view similar to that 1, showing the two parts of the fastener at the beginning of the attachment;
-la figure 3 est une vue en perspective montrant le godet verrouillé sur l'engin, la plaque de verrouillage n'étant pas représentée ;  FIG 3 is a perspective view showing the bucket locked on the machine, the locking plate not being shown;
-les figures 4 à 7 sont des vues schématiques explicitant le fonctionnement du dispositif de sécurité de l'invention ;  FIGS. 4 to 7 are schematic views explaining the operation of the safety device of the invention;
-les figures 8 et 9 sont des vues schématiques analogues à celles 4 et 7, montrant une variante de réalisation.  FIGS. 8 and 9 are schematic views similar to those 4 and 7, showing an alternative embodiment.
Selon la technique connue, l'attache comporte deux parties 1 et 2, celle 1 étant fixée au bras de l'engin (non représenté) tandis que celle 2 est fixée à la partie supérieure du godet G. La partie 1 présente une paire de crochets 3 pouvant saisir, par une manœuvre judicieuse du bras de l'engin, un arbre 4, porté par la partie 2, et soulever le godet. En faisant pivoter la partie 1 selon la flèche Fi , l'extension usuelle 5 traverse l'ouverture de la partie médiane de la partie 1 ainsi que l'ouverture de la plaque de verrouillage 6 en libérant cette dernière qui, lorsque les deux parties sont appliquées l'une contre l'autre coulisse selon la flèche Fz pour s'insérer sous ladite extension 5. According to the known technique, the fastener comprises two parts 1 and 2, that 1 being fixed to the arm of the machine (not shown) while that 2 is fixed to the upper part of the bucket G. Part 1 has a pair of hooks 3 can grasp, by a judicious operation of the arm of the machine, a shaft 4, carried by the part 2, and lift the bucket. By rotating the part 1 according to the arrow Fi, the usual extension 5 passes through the opening of the middle part of the part 1 and the opening of the locking plate 6 by releasing the latter, which when both parts are applied against the other slide according to the arrow Fz to fit under said extension 5.
Selon l'invention, la partie 1 présente un organe constitué par un doigt 7 pouvant s'insérer librement dans un organe constitué par une encoche 8 de la partie 2, les dimensions de ces deux organes dépendant de la taille de l'engin et du godet de façon à ce que le doigt porté par un « petit engin » ne puisse pas pénétrer dans l'encoche d'un « gros godet », l'inverse étant naturellement possible. According to the invention, the part 1 has a member constituted by a finger 7 which can fit freely in a member constituted by a notch 8 of the part 2, the dimensions of these two members depending on the size of the machine and the bucket so that the finger carried by a "small machine" can not penetrate the notch of a "big bucket", the opposite being naturally possible.
Selon un mode de réalisation, la figure 4 montre un doigt 7 dont la largeur est sensiblement égale à la largeur de l'encoche 8, ce doigt peut pénétrer librement dans ladite encoche et le verrouillage est possible. Le doigt 7 est porté par un petit engin et l'encoche 8 est portée par un petit godet. La figure 5 montre un doigt 7a, plus étroit que celui 7, porté par un grand engin. Le doigt 7a pénétrant facilement dans l'encoche 8, le verrouillage d'un petit godet sur un grand engin est donc possible. According to one embodiment, FIG. 4 shows a finger 7 whose width is substantially equal to the width of the notch 8, this finger can penetrate freely into said notch and the locking is possible. The finger 7 is carried by a small machine and the notch 8 is carried by a small bucket. Figure 5 shows a finger 7a, narrower than that 7, carried by a large machine. The finger 7a penetrating easily into the notch 8, the locking of a small bucket on a large machine is possible.
Comme cela ressort de la figure 6, un grand godet est associé à une encoche 8a, plus étroite que celle 8, pouvant coopérer avec un doigt 7a. As is apparent from Figure 6, a large bucket is associated with a notch 8a, narrower than that 8, which can cooperate with a finger 7a.
Par contre, comme cela ressort de la figure 7, un grand godet auquel est associée une encoche 8a, étroite, ne peut pas être verrouillé sur un petit engin auquel est associé un doigt 7 plus large que ladite encoche 8a. Selon une variante de réalisation (fig. 8), la partie 1 est découpée de façon à présenter une saillie 9 susceptible de pénétrer dans un logement 10 de la partie 2 si le godet à saisir n'excède pas les capacités de l'engin. By cons, as shown in Figure 7, a large bucket with which is associated a notch 8a, narrow, can not be locked on a small machine which is associated with a finger 7 wider than said notch 8a. According to an alternative embodiment (FIG 8), the portion 1 is cut so as to have a projection 9 able to enter a housing 10 of the part 2 if the bucket to seize does not exceed the capacity of the machine.
La figure 9 montre un godet G dont le poids, en charge, excède les capacités de l'engin et dont le champ 10a est décalé par rapport à celui 9a de la partie 1 de façon à ce que la saillie 9, du « petit engin » ne puisse pas pénétrer dans le logement 10 d'un « gros godet ». FIG. 9 shows a bucket G whose weight, under load, exceeds the capacity of the machine and whose field 10a is offset relative to that 9a of the part 1 so that the projection 9, of the "small machine "Can not enter the housing 10 of a" big bucket ".
Il ressort des explications ci-dessus que le dispositif de sécurité est disposé sur les côtés des parties 1 et 2 s'étendant parallèlement à l'arbre 4 mais, un résultat analogue pourrait être obtenu si ce dispositif était situé sur l'un, au moins, des côtés qui s'étend sensiblement orthogonalement audit arbre. It follows from the explanations above that the safety device is arranged on the sides of the parts 1 and 2 extending parallel to the shaft 4, but a similar result could be obtained if this device was located on one, at the least, sides extending substantially orthogonally to said shaft.

Claims

REVENDICATIONS
1 - Dispositif de sécurité pour les attaches rapides comportant deux parties (1 ) et 2), dont l'une (1 ) est portée par le bras de l'engin tandis que l'autre1 - Safety device for quick couplers comprising two parts (1) and 2), one of which (1) is carried by the arm of the machine while the other
(2) est rendue solidaire de l'outil (un godet par exemple), ladite première partie présentant un berceau (3), formé par une paire de crochets, pouvant saisir un arbre (4) de la seconde partie, pour soulever l'outil et permettre le pivotement de la première partie afin d'appliquer les deux parties l'une contre l'autre pour permettre le verrouillage, caractérisé en ce que chaque partie de l'attache présente un organe (7 ou 9) pouvant coopérer avec un organe (8 ou 1 0) de l'autre partie si le poids de l'outil en charge n'excède pas la capacité de l'engin, la coopération étant impossible dans le cas contraire de façon à s'opposer à l'application de la première partie sur la seconde et empêcher le verrouillage. (2) is made integral with the tool (a bucket for example), said first part having a cradle (3), formed by a pair of hooks, capable of gripping a shaft (4) of the second part, to lift the tool and allow the pivoting of the first part in order to apply the two parts against each other to allow locking, characterized in that each part of the fastener has a member (7 or 9) which can cooperate with a organ (8 or 1 0) of the other party if the weight of the loaded tool does not exceed the capacity of the machine, cooperation being impossible otherwise in order to oppose the application of the first part on the second and prevent locking.
2- Dispositif selon la revendication 1 , caractérisé en ce que, selon un mode de réalisation, l'un des organes est constitué par un doigt (7) susceptible de pénétrer dans une encoche (8) de l'autre partie, la sécurité étant assurée en dimensionnant judicieusement encoche et doigt selon la taille de l'engin et de l'outil de façon à ce que le doigt d'un petit engin ne puisse pas pénétrer dans l'encoche d'un outil dont le poids en charge dépasse les capacités dudit engin. 3-Dispositif selon la revendication 1 , caractérisé en ce que l'un des organes est constitué par une partie en saillie (9), pouvant pénétrer dans un logement (10) de l'autre partie, la sécurité étant assurée en positionnant judicieusement le champ (9a) de ladite saillie par rapport à celui (10a) dudit logement de façon à ce que la saillie d'un petit engin ne puisse pas pénétrer dans le logement d'un outil dont le poids en charge dépasse les capacités dudit engin. 2- Device according to claim 1, characterized in that, according to one embodiment, one of the members is constituted by a finger (7) capable of penetrating into a notch (8) of the other part, the safety being ensured by judiciously sizing the notch and finger according to the size of the machine and the tool so that the finger of a small machine cannot penetrate the notch of a tool whose loaded weight exceeds the capabilities of said machine. 3-Device according to claim 1, characterized in that one of the organs is constituted by a projecting part (9), capable of penetrating into a housing (10) of the other part, safety being ensured by judiciously positioning the field (9a) of said projection relative to that (10a) of said housing so that the projection of a small machine cannot penetrate in the housing of a tool whose loaded weight exceeds the capacities of said machine.
PCT/FR2012/000207 2011-07-12 2012-05-24 Safety device for quick-fit attachments used for fitting a tool to the end of the arm of a hydraulic excavator WO2013007885A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US14/232,129 US20140241786A1 (en) 2011-07-12 2012-05-24 Safety device for quick-fit attachments used for fitting a tool to the end of the arm of a hydraulic excavator
EP12732687.4A EP2732102B1 (en) 2011-07-12 2012-05-24 Safety device for quick-fit attachments used for fitting a tool to the end of the arm of a hydraulic excavator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1102186 2011-07-12
FR1102186A FR2977903B1 (en) 2011-07-12 2011-07-12 SAFETY DEVICE FOR QUICK FASTENERS FOR ATTACHING A TOOL TO THE END OF THE ARM OF A HYDRAULIC EXCAVATOR

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WO2013007885A1 true WO2013007885A1 (en) 2013-01-17

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PCT/FR2012/000207 WO2013007885A1 (en) 2011-07-12 2012-05-24 Safety device for quick-fit attachments used for fitting a tool to the end of the arm of a hydraulic excavator

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US (1) US20140241786A1 (en)
EP (1) EP2732102B1 (en)
FR (1) FR2977903B1 (en)
WO (1) WO2013007885A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4133121A (en) * 1976-08-18 1979-01-09 Hemphill Charles W Backhoe bucket adapter bushing and pin method and apparatus
JPH07286335A (en) * 1994-02-28 1995-10-31 Sakado Kosakusho:Kk Connector for construction working machine
JP2000104276A (en) * 1998-09-29 2000-04-11 Kobe Kenki:Kk Backet mount structure of excavator
FR2946061A1 (en) 2009-05-29 2010-12-03 Klac Industrie SAFETY DEVICE FOR A QUICK ATTACHMENT FOR FIXING A TOOL AT THE END OF THE ARM OF A HYDRAULIC SHOVEL OR THE LIKE.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4133121A (en) * 1976-08-18 1979-01-09 Hemphill Charles W Backhoe bucket adapter bushing and pin method and apparatus
JPH07286335A (en) * 1994-02-28 1995-10-31 Sakado Kosakusho:Kk Connector for construction working machine
JP2000104276A (en) * 1998-09-29 2000-04-11 Kobe Kenki:Kk Backet mount structure of excavator
FR2946061A1 (en) 2009-05-29 2010-12-03 Klac Industrie SAFETY DEVICE FOR A QUICK ATTACHMENT FOR FIXING A TOOL AT THE END OF THE ARM OF A HYDRAULIC SHOVEL OR THE LIKE.

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US20140241786A1 (en) 2014-08-28
EP2732102A1 (en) 2014-05-21
FR2977903B1 (en) 2013-08-02
FR2977903A1 (en) 2013-01-18
EP2732102B1 (en) 2016-11-23

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