EP1285139B1 - Quick fastening safety device for fixing a tool to the end of a loader arm or the like - Google Patents

Quick fastening safety device for fixing a tool to the end of a loader arm or the like Download PDF

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Publication number
EP1285139B1
EP1285139B1 EP01934106A EP01934106A EP1285139B1 EP 1285139 B1 EP1285139 B1 EP 1285139B1 EP 01934106 A EP01934106 A EP 01934106A EP 01934106 A EP01934106 A EP 01934106A EP 1285139 B1 EP1285139 B1 EP 1285139B1
Authority
EP
European Patent Office
Prior art keywords
hook
locking plate
tool
safety device
fixing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP01934106A
Other languages
German (de)
French (fr)
Other versions
EP1285139A1 (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 EP1285139A1 publication Critical patent/EP1285139A1/en
Application granted granted Critical
Publication of EP1285139B1 publication Critical patent/EP1285139B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3627—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
    • E02F3/364—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat using wedges
    • 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
    • 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
    • Y10T403/59—Manually releaseable latch type
    • Y10T403/591—Manually releaseable latch type having operating mechanism
    • 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
    • Y10T403/59—Manually releaseable latch type
    • Y10T403/591—Manually releaseable latch type having operating mechanism
    • Y10T403/593—Remotely actuated
    • 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
    • Y10T403/59—Manually releaseable latch type
    • Y10T403/599—Spring biased manipulator

Definitions

  • the present invention relates to a quick coupler safety device for attaching a tool to the end of the arm of a loader or the like.
  • a two-part fastener comprising a fastening member provided with a cradle for riding a tree secured to the other part, one of the parts having an opening through which can be traversed by a hook-shaped extension under which can be inserted a sliding locking plate to maintain pressed against each other two parts constituting the fastener.
  • the locking plate is held in the armed position and, in this position, it does not oppose the passage of the hook-shaped extension through the aforementioned opening. It is during this passage that the aforementioned extension releases the locking plate which, under the action of springs that relax, is inserted under the hook to lock the two parts of the fastener one against the other.
  • the hook and the plate have oblique surfaces which cooperate and press the two parts of the fastener against each other.
  • the locking plate extends only imperfectly under the corresponding part of the hook, the aforementioned cooperation is imperfect and under the shocks and the vibrations, a risk of stall is to fear with all the inconveniences that this may present.
  • the present invention which overcomes this disadvantage, is remarkable in that the hook has a means capable of cooperating with the locking plate to oppose the rotation of the part of the fastener comprising said hook.
  • the fastener which is in accordance with that described in the French patent application published under the number 2785952, comprises two parts 1 and 2, each substantially affecting the shape of a stirrup.
  • One of the parts has a shaft 3 can be grasped by a cradle 4 of the other party.
  • the part 2 has on its median part 2a an extension 5 forming a hook 6.
  • the extension 5 can pass through an opening 7 provided on the median part 1a of the part 1.
  • On the part 1 can slide a locking plate 8, having an opening 9 for passage of the extension 5.
  • the plate 8 is shown in the armed position, the openings 7 and 9 being substantially in coincidence.
  • the plate 8 is held in this position by means of, for example, a pivoting locking finger 10.
  • the oblique edge 8a of the plate 8 is inserted under the part 6a of the hook, the cooperation of the oblique parts in contact having the effect of pressing the two parts of tie it against each other.
  • the plate 8 under the action of the springs, which are then strongly bandaged, will move according to the arrow F1 but not fit imperfectly under the hook in giving the illusion of a lock that, in fact, did not happen. It is this type of incident that is represented on the figure 2 .
  • the present invention which overcomes this drawback, consists in providing a safety device opposing the pivoting of the portion comprising the hook as soon as it has passed through the openings 7 and 9.
  • the extension 5 has at its upper part, at least, a lateral finger 11, the openings 7 and 9 having recesses 12 and 13 for the passage of said finger.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Buckles (AREA)
  • Clamps And Clips (AREA)
  • Flanged Joints, Insulating Joints, And Other Joints (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Automatic Tool Replacement In Machine Tools (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Agricultural Machines (AREA)
  • Shovels (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)

Abstract

Quick fastener system for fixing a tool at the end of a loading arm, wherein the system includes a first part configured to be coupled to the loading arm. The first part includes a cradle and a first aperture. A second part is configured to be coupled to the tool. The second part includes a hook-shaped extension and a shaft which is adapted to be engaged by the cradle. A locking plate is adapted to engage the hook-shaped extension after the hook-shaped extension passes through the first aperture. At least one spring is coupled to the locking plate. The hook-shaped extension includes at least one lateral projection

Description

La présente invention est relative à un dispositif de sécurité pour attache rapide destinée à fixer un outil à l'extrémité du bras d'un chargeur ou analogue.The present invention relates to a quick coupler safety device for attaching a tool to the end of the arm of a loader or the like.

L'état de la technique est constitué, entre autres, par l'attache décrite dans la demande de brevet français publiée sous le numéro FR-A1-2785952 .The state of the art is constituted, inter alia, by the fastener described in the French patent application published under the number FR-A1-2785952 .

Dans ce document, il est décrit une attache en deux parties, comportant un organe d'accrochage pourvu d'un berceau permettant d'enfourcher un arbre rendu solidaire de l'autre partie, l'une des parties comportant une ouverture pouvant être traversée par une extension en forme de crochet sous laquelle peut s'insérer une plaque de verrouillage coulissante permettant de maintenir plaquée l'une contre l'autre les deux pièces constituant l'attache.In this document, there is described a two-part fastener, comprising a fastening member provided with a cradle for riding a tree secured to the other part, one of the parts having an opening through which can be traversed by a hook-shaped extension under which can be inserted a sliding locking plate to maintain pressed against each other two parts constituting the fastener.

La plaque de verrouillage est maintenue en position armée et, dans cette position, elle ne s'oppose pas au passage de l'extension en forme de crochet à travers l'ouverture précitée. C'est lors de ce passage que l'extension précitée libère la plaque de verrouillage qui, sous l'action de ressorts qui se détendent, s'insère sous le crochet pour verrouiller les deux parties de l'attache l'une contre l'autre.The locking plate is held in the armed position and, in this position, it does not oppose the passage of the hook-shaped extension through the aforementioned opening. It is during this passage that the aforementioned extension releases the locking plate which, under the action of springs that relax, is inserted under the hook to lock the two parts of the fastener one against the other.

Le crochet et la plaque présentent des surfaces obliques qui coopèrent et plaquent les deux parties de l'attache l'une contre l'autre.The hook and the plate have oblique surfaces which cooperate and press the two parts of the fastener against each other.

Si, pour une raison quelconque, présence de terre par exemple, la plaque de verrouillage ne s'étend qu'imparfaitement sous la partie correspondante du crochet, la coopération précitée est imparfaite et sous les chocs et les vibrations, un risque de décrochage est à craindre avec tous les inconvénients que cela peut présenter.If, for any reason, the presence of earth for example, the locking plate extends only imperfectly under the corresponding part of the hook, the aforementioned cooperation is imperfect and under the shocks and the vibrations, a risk of stall is to fear with all the inconveniences that this may present.

La présente invention, qui remédie à cet inconvénient, est remarquable en ce que le crochet présente un moyen susceptible de coopérer avec la plaque de verrouillage pour s'opposer à la rotation de la partie de l'attache comportant ledit crochet.The present invention, which overcomes this disadvantage, is remarkable in that the hook has a means capable of cooperating with the locking plate to oppose the rotation of the part of the fastener comprising said hook.

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 :

  • la figure 1 est une vue d'une attache rapide d'un type connu;
  • la figure 2 est une vue, à plus grande échelle de la figure 1, montrant la position de la plaque de verrouillage lorsqu'un incident se produit;
  • la figure 3 est une vue, analogue à celle 1, montrant une attache modifiée selon l'invention;
  • la figure 4 est la vue de dessus de la figure 3;
  • la figure 5 est une vue, analogue à celle 4, montrant l'attache en position de sécurité;
  • la figure 6 est la vue en élévation de la figure 5
The present invention will be better understood from the following description given with reference to the accompanying drawings by way of indicative example only, in which:
  • the figure 1 is a view of a quick coupler of a known type;
  • the figure 2 is a view, on a larger scale of the figure 1 , showing the position of the locking plate when an incident occurs;
  • the figure 3 is a view, similar to that 1, showing a modified fastener according to the invention;
  • the figure 4 is the top view of the figure 3 ;
  • the figure 5 is a view, similar to that 4, showing the fastener in the safety position;
  • the figure 6 is the elevation view of the figure 5

En se reportant à la figure 1, on voit que l'attache, qui est conforme à celle décrite dans la demande de brevet français publiée sous le numéro 2785952, comporte deux parties 1 et 2, affectant chacune sensiblement la forme d'un étrier.Referring to the figure 1 it can be seen that the fastener, which is in accordance with that described in the French patent application published under the number 2785952, comprises two parts 1 and 2, each substantially affecting the shape of a stirrup.

L'une des parties comporte un arbre 3 pouvant être saisi par un berceau 4 de l'autre partie.One of the parts has a shaft 3 can be grasped by a cradle 4 of the other party.

La pièce 2 présente sur sa partie médiane 2a une extension 5 formant un crochet 6. L'extension 5 peut traverser une ouverture 7 prévue sur la partie médiane 1 a de la partie 1.The part 2 has on its median part 2a an extension 5 forming a hook 6. The extension 5 can pass through an opening 7 provided on the median part 1a of the part 1.

Sur la partie 1 peut coulisser une plaque de verrouillage 8, présentant une ouverture 9 de passage de l'extension 5.On the part 1 can slide a locking plate 8, having an opening 9 for passage of the extension 5.

Sur la figure 1, la plaque 8 est représentée en position armée, les ouvertures 7 et 9 étant sensiblement en coïncidence. La plaque 8 est maintenue dans cette position au moyen, par exemple d'un doigt de verrouillage pivotant 10.On the figure 1 , the plate 8 is shown in the armed position, the openings 7 and 9 being substantially in coincidence. The plate 8 is held in this position by means of, for example, a pivoting locking finger 10.

Lors de la rotation, autour de l'axe de l'arbre 3, l'extension 5 repousse le doigt 10 et la plaque , sous l'effet des ressorts de rappel usuels, se déplace selon la flèche F1.During rotation, around the axis of the shaft 3, the extension 5 pushes the finger 10 and the plate, under the effect of the usual return springs, moves along the arrow F 1 .

Si rien ne s'oppose au déplacement, présence de terre par exemple, le bord oblique 8a de la plaque 8 vient s'insérer sous la partie 6a du crochet, la coopération des parties obliques en contact ayant pour effet de plaquer des deux parties de l'attache l'une contre l'autre.If nothing prevents the displacement, presence of earth for example, the oblique edge 8a of the plate 8 is inserted under the part 6a of the hook, the cooperation of the oblique parts in contact having the effect of pressing the two parts of tie it against each other.

Si les surfaces devant coopérer sont plus ou moins noyées dans de la terre, la plaque 8 sous l'action des ressorts, qui sont alors fortement bandés, va se déplacer selon la flèche F1 mais ne s'insérer qu'imparfaitement sous le crochet en donnant l'illusion d'un verrouillage qui, en fait, ne s'est pas effectué. C'est ce type d'incident qui est représenté sur la figure 2.If the surfaces to be cooperated are more or less embedded in the earth, the plate 8 under the action of the springs, which are then strongly bandaged, will move according to the arrow F1 but not fit imperfectly under the hook in giving the illusion of a lock that, in fact, did not happen. It is this type of incident that is represented on the figure 2 .

Sur cette figure, on constate que les surfaces 8a et 6a ne sont pas appliquées l'une contre l'autre. De ce fait, lors du travail, les chocs et les vibrations peuvent entraîner le décrochage et la chute de l'outil relié au bras de l'engin.In this figure, it is found that the surfaces 8a and 6a are not applied against each other. Therefore, during work, shocks and vibrations can cause the stall and fall of the tool connected to the arm of the machine.

La présente invention, qui remédie à cet inconvénient, consiste à prévoir un dispositif de sécurité s'opposant au pivotement de la partie comportant le crochet dès que celui-ci a traversé les ouvertures 7 et 9.The present invention, which overcomes this drawback, consists in providing a safety device opposing the pivoting of the portion comprising the hook as soon as it has passed through the openings 7 and 9.

Selon un mode de réalisation, l'extension 5 présente à sa partie supérieure, au moins, un doigt latéral 11, les ouvertures 7 et 9 présentant des décrochements 12 et 13 permettant le passage dudit doigt.According to one embodiment, the extension 5 has at its upper part, at least, a lateral finger 11, the openings 7 and 9 having recesses 12 and 13 for the passage of said finger.

Lorsque la plaque 8 est en position armée, les ressorts de rappel usuels 14 étant bandés, les décrochements 12 et 13 sont en coïncidence (fig.3 et 4).When the plate 8 is in the armed position, the usual return springs 14 being bandaged, the recesses 12 and 13 are in coincidence ( fig.3 and 4 ).

A la fin du mouvement, pour passer de la position représentée sur la figure 4 à celle représentée sur la figure 6, l'extension 5 repousse le doigt 10 et les doigts 11 se trouvent situés au-dessus du plan de la plaque 8, qui se déplace selon la flèche F1.At the end of the movement, to move from the position represented on the figure 4 to that represented on the figure 6 the extension 5 pushes the finger 10 and the fingers 11 are located above the plane of the plate 8, which moves along the arrow F 1 .

Sur la figure 6 est montré le même type d'incident que celui représenté sur la figure 2 : le contact entre les surfaces 6a et 8a est très imparfait de la terre empêchant, par exemple, à la plaque 8 de s'insérer complètement sous le crochet.On the figure 6 is shown the same type of incident as that shown on the figure 2 the contact between the surfaces 6a and 8a is very imperfect of the earth preventing, for example, the plate 8 to fit completely under the hook.

Si le contact entre les deux surfaces précitées est rompu, la partie 2 de l'attache va pivoter légèrement jusqu'au moment où les doigts 11 vont venir prendre appui contre la plaque 8 en s'opposant au décrochage et à la chûte de l'outil relié à ladite partie 2.If the contact between the two aforementioned surfaces is broken, the portion 2 of the clip will pivot slightly until the fingers 11 will come to bear against the plate 8 by opposing the stall and the fall of the tool connected to said part 2.

Claims (1)

  1. A quick-disconnect fastener intended to fix a tool at the end of the arm of a loader or the like including a safety device, the quick-disconnect fastener being of the type of those including two parts (1 and 2), one of which includes a cradle (4) capable of being mounted astride a shaft (3) made integral with the other part, one of the parts including,an opening (7) through which a hook-shaped extension (6) made integral with the other part can pass, under which a locking plate (8) can be inserted through the action of expanding springs, the expansion of said springs being caused by the passage of said extension through the above-mentioned opening (7), and through an opening (9) existing on said locking plate (8), characterized in that the hook (6) has at least one lateral finger (11) capable of extending above the locking plate (8), said openings (7 and 9) having recesses (12 and 13) which coincide when said locking plate (8) is in cocked position.
EP01934106A 2000-05-31 2001-05-14 Quick fastening safety device for fixing a tool to the end of a loader arm or the like Expired - Lifetime EP1285139B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0006972A FR2809779B1 (en) 2000-05-31 2000-05-31 SAFETY DEVICE FOR QUICK COUPLER FOR ATTACHING A TOOL AT THE END OF THE ARM OF A LOADER OR THE LIKE
FR0006972 2000-05-31
PCT/FR2001/001443 WO2001092648A1 (en) 2000-05-31 2001-05-14 Quick fastening safety device for fixing a tool to the end of a loader arm or the like

Publications (2)

Publication Number Publication Date
EP1285139A1 EP1285139A1 (en) 2003-02-26
EP1285139B1 true EP1285139B1 (en) 2009-07-08

Family

ID=8850823

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01934106A Expired - Lifetime EP1285139B1 (en) 2000-05-31 2001-05-14 Quick fastening safety device for fixing a tool to the end of a loader arm or the like

Country Status (13)

Country Link
US (1) US6688801B2 (en)
EP (1) EP1285139B1 (en)
JP (1) JP4190881B2 (en)
AT (1) ATE435947T1 (en)
AU (1) AU2001260415A1 (en)
CA (1) CA2408897C (en)
DE (1) DE60139197D1 (en)
ES (1) ES2328792T3 (en)
FR (1) FR2809779B1 (en)
HU (1) HUP0302116A2 (en)
PL (1) PL205690B1 (en)
RU (1) RU2234573C2 (en)
WO (1) WO2001092648A1 (en)

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DE29708672U1 (en) * 1997-05-15 1997-09-18 L&K Land- und Kraftfahrzeugtechnik GmbH, 99326 Stadtilm Fastening element for work tools on excavators
FR2765601B1 (en) * 1997-07-03 1999-12-24 Soerma Tp DEVICE FOR LOCKING A QUICK COUPLER FOR FIXING A BUCKET, PALLETIZER, ROCK HAMMER OR THE LIKE
US6350079B1 (en) * 1998-07-28 2002-02-26 Caterpillar S.A.R.L. Quick coupler assembly
FR2785952B1 (en) 1998-11-12 2001-04-06 Alain Husson QUICK COUPLER FOR ATTACHING A TOOL AT THE END OF THE ARM OF A LOADER OR THE LIKE
US6487800B1 (en) * 2000-07-26 2002-12-03 Caterpillar Inc. Manually operated coupler for work tools

Also Published As

Publication number Publication date
US6688801B2 (en) 2004-02-10
EP1285139A1 (en) 2003-02-26
CA2408897A1 (en) 2001-12-06
FR2809779B1 (en) 2002-07-19
PL361776A1 (en) 2004-10-04
FR2809779A1 (en) 2001-12-07
US20030113159A1 (en) 2003-06-19
RU2234573C2 (en) 2004-08-20
CA2408897C (en) 2006-11-21
HUP0302116A2 (en) 2003-09-29
PL205690B1 (en) 2010-05-31
JP4190881B2 (en) 2008-12-03
WO2001092648A1 (en) 2001-12-06
AU2001260415A1 (en) 2001-12-11
ATE435947T1 (en) 2009-07-15
DE60139197D1 (en) 2009-08-20
JP2003535243A (en) 2003-11-25
ES2328792T3 (en) 2009-11-18

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