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EP0609176A1 - Coupling device for coupling an implement to a back-hoe arm - Google Patents

Coupling device for coupling an implement to a back-hoe arm Download PDF

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Publication number
EP0609176A1
EP0609176A1 EP94810027A EP94810027A EP0609176A1 EP 0609176 A1 EP0609176 A1 EP 0609176A1 EP 94810027 A EP94810027 A EP 94810027A EP 94810027 A EP94810027 A EP 94810027A EP 0609176 A1 EP0609176 A1 EP 0609176A1
Authority
EP
European Patent Office
Prior art keywords
stop
shaft
crank
bolt
latch
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
EP94810027A
Other languages
German (de)
French (fr)
Other versions
EP0609176B1 (en
Inventor
Etienne Moinat
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
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Publication of EP0609176A1 publication Critical patent/EP0609176A1/en
Application granted granted Critical
Publication of EP0609176B1 publication Critical patent/EP0609176B1/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
    • E02F3/364—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat using wedges

Definitions

  • the subject of the present invention is a device for rapidly fixing a tool to the end of a construction machine arm, comprising a terminal piece intended to be fixed to the end of said arm and provided with two pairs of lateral projections. having ramps hooking onto corresponding ramps of two pairs of corresponding lateral projections formed on the opposite faces of two parallel walls of the tool, and locking means exerting and maintaining an engagement thrust on said projections of so as to apply the tool against the end piece and keep it applied.
  • Such a device known as a quick coupler
  • EP 0 467 837 Such a device, known as a quick coupler, is described in the applicant's patent application EP 0 467 837.
  • three locking devices are described which simultaneously provide compensation for the play due to wear by exerting a permanent engagement thrust on the hooking projections.
  • the first two devices described use locking parts which it is necessary to remove when fixing and removing the tool at the end of the arm of the machine. These locking parts, as well as the screws which keep them under tension, are also exposed to shocks during the working of the machine.
  • the third device intended to be actuated by means of an unlocking cylinder, did not give the expected results. It is also delicate and bulky.
  • the object of the present invention is to produce a quick fixing device comprising locking means with no parts to disassemble when attaching or removing the tool at the end of the arm of the construction machine, easy to use, well protected against impact and making the best use of available space .
  • the device according to the invention is characterized in that the locking means comprise a lock mounted movable in translation and in rotation on the end piece, on a transverse shaft perpendicular to the two parallel walls of the tool, the radial end, relatively to the shaft of this lock having an oblique axis profile relative to said shaft, a stop integral with the tool and having a profile of shape combined with that of the lock and of axis parallel to the axis of the profile of the lock, the lock coming to engage, in the manner of a wedge, between one side of the end piece and the stop and to lock in rotation by its profiled side in the profile of the stop, in the locked position, a shaped piece of a crank journaled on the bolt and the arm of which extends transversely to said shaft, a tension spring acting on the arm of the crank parallel to said shaft and pulling the bolt in the direction of the stop, the ext remitted from the hub of the crank being shaped so as to be able to be driven in rotation by means of a key, the hub of
  • the design of the locking means makes the best use of the space available between the end piece of the machine arm and the tool and these means are relatively well protected against impact.
  • Figure 1 is a perspective view of the end piece secured to the machine, without the locking means.
  • Figure 2 is a perspective view of the female part integral with the tool.
  • Figure 3 is a perspective view of the assembled parts of the fastener showing the locking means in the locked position.
  • Figure 4 is a perspective view, from a perspective different from that of Figure 3, showing the locking means in the unlocked position.
  • the fastener shown here comprises on the one hand a male end piece 1, intended to be fixed to the end of the arm of a construction machine.
  • the means of attachment to this arm have not been shown. They are of the same type as those described in document EP O 467 837.
  • the fastener consists on the other hand of a female part 2, shown in FIG. 2, secured to the tool, for example a shovel bucket .
  • the end piece 1 is in the form of an openwork box, the side walls of which are provided externally with two pairs of projections, the projections 3, 4 and 5 of which are visible in the drawing. These projections have oblique ramps 6 and 6 'used for fixing and locking.
  • the projections 3 and 4 also have ramps 7 and 8 opposite to the ramps 6 and 6 'and serving to guide the end piece 1 when it engages in the female piece 2.
  • the floor of the end piece has a cut limited by a side 41 on which the locking thrust is exerted.
  • the female part 2 in the form of an open box, has two parallel side walls 9 and 10.
  • the wall 9 has three protrusions 11, 12, 13 on the inside.
  • the wall 10 has three protrusions 14, 15, 16 on the inside, respectively opposite the projections 11, 12, 13.
  • the projections 11 and 12 have ramps 17 and 18, as do the projections 14 and 15. These ramps are intended to cooperate with the ramps 6 and 6 'of the part.
  • terminal 1 for applying the piece 1 against the bottom of the piece 2.
  • the piece 13 has a ramp 19 parallel to the ramp 18.
  • the piece 16 has a similar ramp 20.
  • the spaces between, on the one hand, the projections 12 and 13 and, on the other hand, the projections 15 and 16 are used to guide the projections 4 and 5 during the engagement of the end piece 1 in the female piece 2.
  • the ramps 8 slide on the ramps 19 and 20.
  • a stop 22 is formed on the bottom of the part 2, at the entry thereof.
  • This stop 22 has a cylindrical surface profile 23 with an oblique axis relative to the walls 9 and 10.
  • a lock 24 having, seen in plan, a wedge shape and an oblique side 24a of cylindrical profile similar to the profile 23 of the stop and whose axis is parallel to that of the stop.
  • This latch 24 is fixed, by a bent radial arm 25, to a shaft 26 rotatably mounted in two bearings 27 and 28 fixed in the floor of the end piece 1.
  • the shaft 26 is also movable in translation in the bearings 27 and 28.
  • On the latch 24 is journalled a crank 29 about an axis perpendicular to the arm 25.
  • the end of the arm of the crank 29 is provided with a crank pin 30 to which is hooked one of the ends of a spring 31 extending parallel to the shaft 26 and the other end of which is attached to the workpiece 1.
  • the spring 31 works in traction.
  • the hub of the crank 29 is provided with radial teeth 32 cooperating with a pawl 33 journalled on the latch 24 around an axis 34 and held in abutment against the teeth of the crank by a light spring.
  • the end of the hub of the crank 29 is in the form of a standardized hexagon 35.
  • the lock 24 is further provided laterally with a ring 36.
  • the side wall of the end piece 1 opposite this ring 36 is provided with 'a perpendicular arm 37 at the end of which a cylindrical finger 38 is formed, the diameter of which is less than the inside diameter of the ring 36.
  • the latch 24 is further provided with a protuberance 39 having a flat protruding above the stop 22 in the locked position. The role of this protuberance will appear during the description of the unlocking.
  • the end 26a of the shaft 26 projecting from the bearing 28 in the locked position can be pierced with a diametrical hole 40 intended to receive a safety pin.
  • the profile of the stop and the lock could of course be different from the profile shown.
  • the lock and the abutment could for example be supported by pependicular faces at the bottom of the part 2 or slightly oblique relative to this bottom.
  • the lock could be kept in the raised position and moved away from the stop by any other means.

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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)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
  • Earth Drilling (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Shovels (AREA)

Abstract

The coupling comprises a male end piece (1) intended to be coupled to the end of the arm of the machine, and a female piece (2) integral with a tool. These two pieces are engaged in one another by means of a ramp system (4, 5, 14, 15) which presses the two pieces against each other. This engagement is maintained without play by a wedge-shaped bolt (24) urged by a spring (31) acting on a crank (297) equipped with a pawl (32, 33). The bolt is further mounted on a sliding shaft (26) making it possible laterally and vertically to move the bolt away from the limit stop (22), the bolt being fastened to a finger (38) to allow the engagement and disengagement of the pieces (1, 2) of the device. <IMAGE>

Description

La présente invention a pour objet un dispositif de fixation rapide d'un outil à l'extrémité d'un bras de machine de chantier, comprenant une pièce terminale destinée à être fixée à l'extrémité dudit bras et pourvue de deux paires de saillies latérales présentant des rampes venant s'accrocher sur des rampes correspondantes de deux paires de saillies latérales correspondantes formées sur les faces en regard de deux parois parallèles de l'outil, et des moyens de verrouillage exerçant et maintenant une poussée d'engagement sur lesdites saillies de manière à appliquer l'outil contre la pièce terminale et à le maintenir appliqué.The subject of the present invention is a device for rapidly fixing a tool to the end of a construction machine arm, comprising a terminal piece intended to be fixed to the end of said arm and provided with two pairs of lateral projections. having ramps hooking onto corresponding ramps of two pairs of corresponding lateral projections formed on the opposite faces of two parallel walls of the tool, and locking means exerting and maintaining an engagement thrust on said projections of so as to apply the tool against the end piece and keep it applied.

Un tel dispositif, connu sous le nom d'attache rapide, est décrit de la demande de brevet EP O 467 837 du demandeur. Dans cette demande de brevet sont décrits trois dispositifs de verrouillage assurant simultanément une compensation du jeu dû à l'usure en exerçant une poussée d'engagement permanente sur les saillies d'accrochage. Les deux premiers dispositifs décrits utilisent des pièces de verrouillage qu'il est nécessaire d'enlever lors de la fixation et de l'enlèvement de l'outil à l'extrémité du bras de la machine. Ces pièces de verrouillage, ainsi que les vis qui les maintiennent sous tension, sont en outre exposées aux chocs lors du travail de la machine. Le troisième dispositif, destiné à être actionné au moyen d'un vérin de déverrouillage, n'a pas donné les résultats escompté. Il est en outre délicat et encombrant.Such a device, known as a quick coupler, is described in the applicant's patent application EP 0 467 837. In this patent application, three locking devices are described which simultaneously provide compensation for the play due to wear by exerting a permanent engagement thrust on the hooking projections. The first two devices described use locking parts which it is necessary to remove when fixing and removing the tool at the end of the arm of the machine. These locking parts, as well as the screws which keep them under tension, are also exposed to shocks during the working of the machine. The third device, intended to be actuated by means of an unlocking cylinder, did not give the expected results. It is also delicate and bulky.

La présente invention a pour but de réaliser un dispositif de fixation rapide comportant des moyens de verrouillage ne comportant aucune pièce à démonter lors de la fixation ou de l'enlèvement de l'outil à l'extrémité du bras de la machine de chantier, d'un usage aisé, bien protégés contre les chocs et utilisant au mieux l'espace disponible.The object of the present invention is to produce a quick fixing device comprising locking means with no parts to disassemble when attaching or removing the tool at the end of the arm of the construction machine, easy to use, well protected against impact and making the best use of available space .

Le dispositif selon l'invention est caractérisé en ce que les moyens de verrouillage comprennent un verrou monté mobile en translation et en rotation sur la pièce terminale, sur un arbre transversal perpendiculaire aux deux parois parallèles de l'outil, l'extrémité radiale, relativement à l'arbre de ce verrou présentant un profil d'axe oblique relativement audit arbre, une butée solidaire de l'outil et présentant un profil de forme conjuguée à celui du verrou et d'axe parallèle à l'axe du profil du verrou, le verrou venant s'engager, à la manière d'un coin, entre un côté de la pièce terminale et la butée et se verrouiller en rotation par son côté profilé dans le profil de la butée, en position de verrouillage, une pièce en forme de manivelle tourillonnée sur le verrou et dont le bras s'étend transversalement audit arbre, un ressort de traction agissant sur le bras de la manivelle parallèlement audit arbre et tirant le verrou en direction de la butée, l'extrémité du moyeu de la manivelle étant conformée de manière à pouvoir être entraînée en rotation au moyen d'une clé, le moyeu de la manivelle présentant sur sa périphérie des dents coopérant avec un cliquet s'opposant à une rotation de la manivelle sous l'effet dudit ressort, et des moyens pour maintenir temporairement le verrou relevé au-dessus de la butée et écarté latéralement de sa position de verrouillage.The device according to the invention is characterized in that the locking means comprise a lock mounted movable in translation and in rotation on the end piece, on a transverse shaft perpendicular to the two parallel walls of the tool, the radial end, relatively to the shaft of this lock having an oblique axis profile relative to said shaft, a stop integral with the tool and having a profile of shape combined with that of the lock and of axis parallel to the axis of the profile of the lock, the lock coming to engage, in the manner of a wedge, between one side of the end piece and the stop and to lock in rotation by its profiled side in the profile of the stop, in the locked position, a shaped piece of a crank journaled on the bolt and the arm of which extends transversely to said shaft, a tension spring acting on the arm of the crank parallel to said shaft and pulling the bolt in the direction of the stop, the ext remitted from the hub of the crank being shaped so as to be able to be driven in rotation by means of a key, the hub of the crank having on its periphery teeth cooperating with a pawl opposing rotation of the crank under the effect of said spring, and means for temporarily holding the bolt raised above the stop and laterally moved away from its locking position.

Au moyen d'une simple clé il est possible de verrouiller et déverrouiller le dispositif. Pour verrouiller on entraîne le moyen de la manivelle de manière à tendre le ressort qui maintient en permanence une traction sur le verrou, la composante de la réaction de la butée dans la direction d'engagement des pièces mâle et femelle du dispositif assurant le maintien de l'attache et le ratrappage du jeu.By means of a simple key it is possible to lock and unlock the device. To lock on drives the means of the crank so as to tension the spring which permanently maintains traction on the bolt, the component of the reaction of the stop in the direction of engagement of the male and female parts of the device ensuring the maintenance of the fastener and catching up on the game.

Pour déverrouiller, il suffit de tourner légèrement, dans le même sens, le moyen de la manivelle et d'écarter le cliquet avec le doigt pour libérer la manivelle et permettre au ressort de se détendre. Il est alors facile de pousser ou de tirer le verrou latéralement, de le soulever et de l'accrocher latéralement pour le maintenir écarté de la butée et au-dessus de celle-ci, de manière à permettre l'enlèvement de l'outil et l'engagement d'un autre outil sans que le verrou vienne gêner cet engagement.To unlock, it suffices to slightly turn, in the same direction, the means of the crank and to spread the pawl with your finger to release the crank and allow the spring to relax. It is then easy to push or pull the bolt laterally, to lift it and to hang it laterally to keep it away from and above the stopper, so as to allow the removal of the tool and the engagement of another tool without the bolt interfering with this engagement.

La conception des moyens de verrouillage utilise au mieux l'espace disponible entre la pièce terminale du bras de la machine et l'outil et ces moyens sont relativement bien protégés contre les chocs.The design of the locking means makes the best use of the space available between the end piece of the machine arm and the tool and these means are relatively well protected against impact.

Le dessin annexé représente, à titre d'exemple, une forme d'exécution de l'invention.The accompanying drawing shows, by way of example, an embodiment of the invention.

La figure 1 est une vue en perspective de la pièce terminale solidaire de la machine, sans les moyens de verrouillage.Figure 1 is a perspective view of the end piece secured to the machine, without the locking means.

La figure 2 est une vue en perspective de la pièce femelle solidaire de l'outil.Figure 2 is a perspective view of the female part integral with the tool.

La figure 3 est une vue en perspective des pièces assemblées de l'attache montrant les moyens de verrouillage en position verrouillée.Figure 3 is a perspective view of the assembled parts of the fastener showing the locking means in the locked position.

La figure 4 est une vue en perspective, selon une perspective différente de celle de la figure 3, montrant les moyens de verrouillage en position déverrouillée.Figure 4 is a perspective view, from a perspective different from that of Figure 3, showing the locking means in the unlocked position.

Comme l'attache décrite dans le document EP O 467 837, l'attache représentée ici comprend d'une part une pièce terminale 1, mâle, destinée à être fixée à l'extrémité du bras d'une machine de chantier. Les moyens d'attache à ce bras n'ont pas été représentés. Ils sont du même type que ceux décrits dans le document EP O 467 837. L'attache se compose d'autre part d'une pièce femelle 2, représentée à la figure 2, solidaire de l'outil, par exemple un godet de pelle.Like the fastener described in document EP 0 467 837, the fastener shown here comprises on the one hand a male end piece 1, intended to be fixed to the end of the arm of a construction machine. The means of attachment to this arm have not been shown. They are of the same type as those described in document EP O 467 837. The fastener consists on the other hand of a female part 2, shown in FIG. 2, secured to the tool, for example a shovel bucket .

La pièce terminale 1 est en forme de caisson ajouré dont les parois latérales sont munies extérieurement de deux paires de saillies dont les saillies 3, 4 et 5 sont visibles sur le dessin. ces saillies présentent des rampes obliques 6 et 6' servant à la fixation et au verrouillage. Les saillies 3 et 4 présentent en outre des rampes 7 et 8 opposées aux rampes 6 et 6' et servant au guidage de la pièce terminale 1 lors de son engagement dans la pièce femelle 2. Le plancher de la pièce terminale présente une découpe limitée par un côté 41 sur lequel s'exerce la poussée de verrouillage.The end piece 1 is in the form of an openwork box, the side walls of which are provided externally with two pairs of projections, the projections 3, 4 and 5 of which are visible in the drawing. these projections have oblique ramps 6 and 6 'used for fixing and locking. The projections 3 and 4 also have ramps 7 and 8 opposite to the ramps 6 and 6 'and serving to guide the end piece 1 when it engages in the female piece 2. The floor of the end piece has a cut limited by a side 41 on which the locking thrust is exerted.

La pièce femelle 2, en forme de caisson ouvert, présente deux parois latérales parallèles 9 et 10. La paroi 9 présente intérieurement trois saillies 11, 12, 13. La paroi 10 présente intérieurement trois saillies 14, 15, 16 situées respectivement en face des saillies 11, 12, 13. Les saillies 11 et 12 présentent des rampes 17 et 18, de même que les saillies 14 et 15. Ces rampes sont destinées à coopérer avec les rampes 6 et 6' de la pièce terminale 1 pour appliquer la pièce 1 contre le fond de la pièce 2. La pièce 13 présente une rampe 19 parallèle à la rampe 18. La pièce 16 présente une rampe analogue 20. Les espaces entre, d'une part, les saillies 12 et 13 et, d'autre part, les saillies 15 et 16 servent au guidage des saillies 4 et 5 lors de l'engagement de la pièce terminale 1 dans la pièce femelle 2. Lors de cet engagement, les rampes 8 glissent sur les rampes 19 et 20. Lorsqu'elle est engagée dans la pièce 2, la pièce 1 vient s'appuyer sur le fond de la pièce 2. Elle est maintenue latéralement par un bossage 21 s'engageant dans une dépression correspondante formée dans la pièce 1.The female part 2, in the form of an open box, has two parallel side walls 9 and 10. The wall 9 has three protrusions 11, 12, 13 on the inside. The wall 10 has three protrusions 14, 15, 16 on the inside, respectively opposite the projections 11, 12, 13. The projections 11 and 12 have ramps 17 and 18, as do the projections 14 and 15. These ramps are intended to cooperate with the ramps 6 and 6 'of the part. terminal 1 for applying the piece 1 against the bottom of the piece 2. The piece 13 has a ramp 19 parallel to the ramp 18. The piece 16 has a similar ramp 20. The spaces between, on the one hand, the projections 12 and 13 and, on the other hand, the projections 15 and 16 are used to guide the projections 4 and 5 during the engagement of the end piece 1 in the female piece 2. During this engagement, the ramps 8 slide on the ramps 19 and 20. When it is engaged in part 2, part 1 comes to bear on the bottom of part 2. It is held laterally by a boss 21 engaging in a corresponding depression formed in part 1.

On décrira maintenant, au moyen des figures 3 et 4, les moyens de verrouillage des pièces 1 et 2. Sur le fond de la pièce 2, à l'entrée de celle-ci, est formée une butée 22. Cette butée 22 présente un profil de surface cylindrique 23 d'axe oblique relativement aux parois 9 et 10.We will now describe, by means of FIGS. 3 and 4, the locking means of the parts 1 and 2. On the bottom of the part 2, at the entry thereof, a stop 22 is formed. This stop 22 has a cylindrical surface profile 23 with an oblique axis relative to the walls 9 and 10.

Sur la pièce terminale 1 est monté un verrou 24 présentant, vu en plan, une forme de coin et un côté oblique 24a de profil cylindrique semblable au profil 23 de la butée et dont l'axe est parallèle à celui de la butée. Ce verrou 24 est fixé, par un bras radial coudé 25, à un arbre 26 monté rotativement dans deux paliers 27 et 28 fixés dans le plancher de la pièce terminale 1. L'arbre 26 est en outre mobile en translation dans les paliers 27 et 28. Sur le verrou 24 est tourillonnée une manivelle 29 autour d'un axe perpendiculaire au bras 25. L'extrémité du bras de la manivelle 29 est munie d'un maneton 30 auquel est accrochée l'une des extrémités d'un ressort 31 s'étendant parallèlement à l'arbre 26 et dont l'autre extrémité est accrochée à la pièce 1. Le ressort 31 travaille en traction. Le moyeu de la manivelle 29 est muni de dents radiales 32 coopérant avec un cliquet 33 tourillonné sur le verrou 24 autour d'un axe 34 et maintenu en appui contre la denture de la manivelle par un léger ressort. L'extrémité du moyeu de la manivelle 29 est en forme de six-pans normalisé 35. Le verrou 24 est en outre muni latéralement d'un anneau 36. La paroi latérale de la pièce terminale 1 en regard de cet anneau 36 est muni d'un bras perpendiculaire 37 à l'extrémité duquel est formé un doigt cylindrique 38 dont le diamètre est inférieur au diamètre intérieur de l'anneau 36. Le verrou 24 est en outre muni d'une protubérance 39 présentant un plat dépassant au-dessus de la butée 22 en position verrouillée. Le rôle de cette protubérance apparaîtra lors de la description du déverrouillage. L'extrémité 26a de l'arbre 26 dépassant le palier 28 en position verrouillée peut être percée d'un trou diamétral 40 destiné à recevoir une goupille de sécurité.On the end piece 1 is mounted a lock 24 having, seen in plan, a wedge shape and an oblique side 24a of cylindrical profile similar to the profile 23 of the stop and whose axis is parallel to that of the stop. This latch 24 is fixed, by a bent radial arm 25, to a shaft 26 rotatably mounted in two bearings 27 and 28 fixed in the floor of the end piece 1. The shaft 26 is also movable in translation in the bearings 27 and 28. On the latch 24 is journalled a crank 29 about an axis perpendicular to the arm 25. The end of the arm of the crank 29 is provided with a crank pin 30 to which is hooked one of the ends of a spring 31 extending parallel to the shaft 26 and the other end of which is attached to the workpiece 1. The spring 31 works in traction. The hub of the crank 29 is provided with radial teeth 32 cooperating with a pawl 33 journalled on the latch 24 around an axis 34 and held in abutment against the teeth of the crank by a light spring. The end of the hub of the crank 29 is in the form of a standardized hexagon 35. The lock 24 is further provided laterally with a ring 36. The side wall of the end piece 1 opposite this ring 36 is provided with 'a perpendicular arm 37 at the end of which a cylindrical finger 38 is formed, the diameter of which is less than the inside diameter of the ring 36. The latch 24 is further provided with a protuberance 39 having a flat protruding above the stop 22 in the locked position. The role of this protuberance will appear during the description of the unlocking. The end 26a of the shaft 26 projecting from the bearing 28 in the locked position can be pierced with a diametrical hole 40 intended to receive a safety pin.

Le dispositif ayant été décrit en position verrouillée, son utilisation sera décrite à partir de la position verrouillée représentée à la position 3.The device having been described in the locked position, its use will be described from the locked position shown in position 3.

Dans cette position verrouillée, la pièce terminale 1 est engagée à fond dans la pièce femelle 2 et le verrou 24 est engagé à fond, à la manière d'un coin, entre la face frontale 41 de la pièce terminale et la butée 22 avec sa partie arrondie 24a engagée dans la gorge 23 de la butée 22. Au moyen d'une clé l'utilisateur a tourné l'axe de la manivelle 29 par son six-pans 35 dans le sens anti-horaire, ce qui a eu pour effet de donner une certaine tension au ressort 31. Le ressort tire ainsi sur la manivelle 29, c'est-à-dire sur le verrou 24 en direction du palier 28. Le moyeu de la manivelle est retenu par le cliquet 33. La réaction de la butée 22 sur la face 41 assure le maintien d'une poussée permanente dans le sens de l'engagement des pièces 1 et 2. On relèvera que les efforts auxquels est soumis l'arbre 26 et ses paliers 27 et 28 sont très faibles.In this locked position, the end piece 1 is fully engaged in the female part 2 and the latch 24 is fully engaged, in the manner of a wedge, between the front face 41 of the end piece and the stop 22 with its rounded part 24a engaged in the groove 23 of the stop 22. By means of a key, the user has turned the axis of the crank 29 by its hexagon 35 counter-clockwise, which has had the effect to give a certain tension to the spring 31. The spring thus pulls on the crank 29, that is to say on the latch 24 in the direction of the bearing 28. The hub of the crank is retained by the pawl 33. The reaction of the stop 22 on the face 41 maintains a permanent thrust in the direction of engagement of the parts 1 and 2. It will be noted that the forces to which the shaft 26 is subjected and its bearings 27 and 28 are very weak.

Pour enlever l'outil, on déverrouille les pièces 1 et 2. Au moyen de la clé on fait tourner légèrement le moyeu de la manivelle 29 par son six-pans 35 dans le sens anti-horaire de manière à permettre le dégagement du cliquet 33 des dents 32. Ce dégagement se fait aisément avec le doigt, le ressort de cliquet n'offrant que peu de résistance. Le ressort 31 peut ainsi se détendre, ce qui permet de déplacer aisément le verrou 24 vers la gauche de manière à le dégager de la gorge 23 de la butée. Si nécessaire on donne un ou deux coups de marteau sur la protubérance 39 pour décoller le verrou 24 de la butée 22. Dès que ce dégagement est suffisant, le verrou 24 est relevé et accroché par son anneau 36 sur le doigt 38, comme représenté à la figure 4. Dans cette position une légère tension sur le ressort 31 assure le maintien en position accrochée. Il est alors possible de retirer la pièce 1 de la pièce femelle 2, le verrou 24 passant au-dessus de la butée 22.To remove the tool, parts 1 and 2 are unlocked. By means of the key, the hub of the crank 29 is slightly rotated by its hexagon 35 anticlockwise so as to allow the release of the pawl 33 teeth 32. This release is easily done with the finger, the pawl spring offering little resistance. The spring 31 can thus relax, which makes it possible to easily move the latch 24 to the left so as to disengage it from the groove 23 of the stop. If necessary, one or two hammer blows are given on the protuberance 39 to detach the lock 24 from the stop 22. As soon as this clearance is sufficient, the lock 24 is raised and hung by its ring 36 on the finger 38, as shown in Figure 4. In this position a slight tension on the spring 31 ensures the maintenance in the hooked position. It is then possible to remove the part 1 from the female part 2, the latch 24 passing over the stop 22.

Inversement, le verrou 24 étant dans la position accrochée représentée à la figure 4, il est possible d'engager la pièce terminale 1 dans la pièce femelle 2 d'un outil. Une fois dans la position représentée à la figure 4, le verrou 24 est décroché du doigt 38 et repoussé ou tiré par le ressort 31 dans la gorge 23 de la butée 22. Au moyen de la clé on donne au ressort 31 la tension désirée. On se retrouve dans la position représentée à la figure 3.Conversely, the lock 24 being in the hooked position shown in Figure 4, it is possible to engage the end piece 1 in the female part 2 of a tool. Once in the position shown in Figure 4, the latch 24 is released from the finger 38 and pushed or pulled by the spring 31 in the groove 23 of the stop 22. By means of the key, the spring 31 is given the desired tension. We find ourselves in the position shown in Figure 3.

Le profil de la butée et du verrou pourrait être bien entendu différent du profil représenté. Le verrou et la butée pourraient par exemple être en appui par des faces pependiculaires au fond de la pièce 2 ou légèrement obliques relativement à ce fond. Le verrou pourrait être maintenu en position relevée et écarté de la butée par tout autre moyen.The profile of the stop and the lock could of course be different from the profile shown. The lock and the abutment could for example be supported by pependicular faces at the bottom of the part 2 or slightly oblique relative to this bottom. The lock could be kept in the raised position and moved away from the stop by any other means.

Claims (6)

Dispositif de fixation rapide d'un outil à l'extrémité d'un bras de machine de chantier, comprenant une pièce terminale (1) destinée à être fixée à l'extrémité dudit bras et pourvue de deux paires de saillies latérales (4, 5) présentant des rampes (6, 6') venant s'accrocher sur des rampes correspondantes (17, 18) de deux paires de saillies correspondantes (11, 12, 14, 15) formées sur les faces en regard de deux parois parallèles de l'outil, et des moyens de verrouillage exerçant et maintenant une poussée d'engagement sur lesdites saillies de manière à appliquer l'outil contre la pièce terminale et à le maintenir appliqué, caractérisé en ce que les moyens de verrouillage comprennent un verrou (24) monté mobile en translation et en rotation sur la pièce terminale, sur un arbre transversal (26) perpendiculaire auxdites parois parallèles, l'extrémité radiale, relativement à l'arbre, de ce verrou présentant un profil d'axe oblique relativement audit arbre, une butée (22) solidaire de l'outil et présentant un profil (23) de forme conjuguée à celui du verrou et d'axe parallèle à l'axe du profil du verrou, le verrou venant s'engager, comme un coin, entre un côté (41) de la pièce terminale et la butée (22) et se verrouiller en rotation par son côté profilé (24a) dans le profil de la butée, en position de verrouillage, une pièce en forme de manivelle (29) tourillonnée sur le verrou et dont le bras s'étend transversalement audit arbre, un ressort de traction (31) agissant sur le bras de la manivelle parallèlement audit arbre et tirant le verrou en direction de la butée, l'extrémité du moyeu de la manivelle étant conformée de manière à pouvoir être entraînée en rotation au moyen d'une clé, le moyeu de la manivelle présentant, sur sa périphérie, des dents coopérant avec un cliquet (33) s'opposant à une rotation de la manivelle sous l'effet dudit ressort, et des moyens (36, 38) pour maintenir temporairement le verrou relevé au-dessus de la butée et écarté de sa position de verrouillage.Device for quickly attaching a tool to the end of a construction machine arm, comprising a terminal piece (1) intended to be fixed to the end of said arm and provided with two pairs of lateral projections (4, 5 ) having ramps (6, 6 ') hooked onto corresponding ramps (17, 18) of two pairs of corresponding projections (11, 12, 14, 15) formed on the facing faces of two parallel walls of the tool, and locking means exerting and maintaining an engagement thrust on said projections so as to apply the tool against the end piece and to keep it applied, characterized in that the locking means comprise a latch (24) mounted movable in translation and in rotation on the end piece, on a transverse shaft (26) perpendicular to said parallel walls, the radial end, relative to the shaft, of this lock having a profile of oblique axis relative to said shaft, a stop (22) integral with the tool and having a profile (23) of shape conjugate to that of the bolt and of axis parallel to the axis of the profile of the bolt, the bolt coming to engage, like a wedge, between a side (41) of the end piece and the stop (22) and lock in rotation by its profiled side (24a) in the profile of the stop, in the locked position, a piece in the form of a crank (29) journalled on the bolt and the arm of which extends transversely to said shaft, a tension spring (31) acting on the arm of the crank parallel to said shaft and pulling the bolt in the direction of the stop, the end of the hub of the crank being shaped so as to be able to be driven in rotation by means of a key, the hub of the crank having, on its periphery, teeth cooperating with a pawl (33) opposing a rotation of the crank under the effect of said spring, and means (36, 38) for temporarily holding the latch raised above the stop and moved away from its locking position. Dispositif selon la revendication 1, caractérisé en ce que le verrou (24) et la butée (22) présentent un profil arrondi (24a, 23).Device according to claim 1, characterized in that the latch (24) and the stop (22) have a rounded profile (24a, 23). Dispositif selon la revendication 1 ou 2, caractérisé en ce que les moyens pour maintenir le verrou relevé et écarté de la butée sont constitués d'un anneau (36) solidaire du verrou et d'un doigt (38) solidaire de la pièce terminale, sur lequel l'anneau est enfilé en position relevée et écartée.Device according to claim 1 or 2, characterized in that the means for holding the latch raised and removed from the stop consist of a ring (36) secured to the latch and a finger (38) secured to the end piece, on which the ring is threaded in the raised and spread position. Dispositif selon l'une des revendications 1, 2 ou 3, caractérisé en ce que les moyens de verrouillage sont situés dans l'espace compris entre la pièce terminale et l'outil, la hauteur de cet espace étant déterminé par la hauteur des saillies d'accrochage.Device according to one of claims 1, 2 or 3, characterized in that the locking means are located in the space between the end piece and the tool, the height of this space being determined by the height of the projections d 'hanging. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que le verrou (24) est fixé à l'arbre (26) et que cet arbre est monté rotatif et coulissant dans deux paliers (27, 28).Device according to one of claims 1 to 4, characterized in that the latch (24) is fixed to the shaft (26) and that this shaft is mounted to rotate and slide in two bearings (27, 28). Dispositif selon la revendication 5, caractérisé en ce que la partie de l'arbre dépassant le palier (28) côté tension présente au moins un trou diamétral dans lequel est engagé une goupille de sécurité amovible.Device according to claim 5, characterized in that the part of the shaft projecting from the bearing (28) on the tension side has at least one diametrical hole in which is engaged a removable safety pin.
EP94810027A 1993-01-26 1994-01-17 Coupling device for coupling an implement to a back-hoe arm Expired - Lifetime EP0609176B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH00226/93A CH687774A5 (en) 1993-01-26 1993-01-26 Fixing a tool at the end of a construction machine arm.
CH226/93 1993-01-26

Publications (2)

Publication Number Publication Date
EP0609176A1 true EP0609176A1 (en) 1994-08-03
EP0609176B1 EP0609176B1 (en) 1996-09-04

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Application Number Title Priority Date Filing Date
EP94810027A Expired - Lifetime EP0609176B1 (en) 1993-01-26 1994-01-17 Coupling device for coupling an implement to a back-hoe arm

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EP (1) EP0609176B1 (en)
AT (1) ATE142296T1 (en)
CH (1) CH687774A5 (en)
DE (1) DE69400446T2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1353011A1 (en) * 2002-03-27 2003-10-15 Rädlinger Maschinen- und Anlagenbau GmbH Device for coupling a working implement to a construction machine
WO2004065699A1 (en) * 2003-01-24 2004-08-05 Claudi Herguido Fo Quick-coupling device for tools on diggers or similar machines
ITUA20162401A1 (en) * 2016-04-07 2016-07-07 Giovanni Andrina Machining group, consisting of a tool, a handling device and a quick coupling device between tool and equipment
WO2017175252A1 (en) * 2016-04-07 2017-10-12 Giovanni Battista Andrina Assembly for workings, composed of a tool, a handling apparatus and a quick coupling device between tool and apparatus
US20180038062A1 (en) * 2016-06-23 2018-02-08 Adam Weaver Versatile adaptor for excavator tools and associated systems and methods
US10301791B2 (en) * 2015-03-17 2019-05-28 Giovanni Andrina Assembly composed of a tool, a handling apparatus and a quick coupling device between tool and apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0467837A1 (en) * 1990-07-18 1992-01-22 Etienne Moinat Connection of a tool to an arm of an excavating machine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0467837A1 (en) * 1990-07-18 1992-01-22 Etienne Moinat Connection of a tool to an arm of an excavating machine

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1353011A1 (en) * 2002-03-27 2003-10-15 Rädlinger Maschinen- und Anlagenbau GmbH Device for coupling a working implement to a construction machine
WO2004065699A1 (en) * 2003-01-24 2004-08-05 Claudi Herguido Fo Quick-coupling device for tools on diggers or similar machines
ES2230981A1 (en) * 2003-01-24 2005-05-01 Claudi Herguido Fo Quick-coupling device for tools on diggers or similar machines
US10301791B2 (en) * 2015-03-17 2019-05-28 Giovanni Andrina Assembly composed of a tool, a handling apparatus and a quick coupling device between tool and apparatus
ITUA20162401A1 (en) * 2016-04-07 2016-07-07 Giovanni Andrina Machining group, consisting of a tool, a handling device and a quick coupling device between tool and equipment
WO2017175252A1 (en) * 2016-04-07 2017-10-12 Giovanni Battista Andrina Assembly for workings, composed of a tool, a handling apparatus and a quick coupling device between tool and apparatus
US20180038062A1 (en) * 2016-06-23 2018-02-08 Adam Weaver Versatile adaptor for excavator tools and associated systems and methods
US10458094B2 (en) * 2016-06-23 2019-10-29 Adam Weaver Versatile connector for excavator tools

Also Published As

Publication number Publication date
CH687774A5 (en) 1997-02-14
DE69400446D1 (en) 1996-10-10
EP0609176B1 (en) 1996-09-04
DE69400446T2 (en) 1997-03-27
ATE142296T1 (en) 1996-09-15

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