EP0671513A1 - Device to unlock a rotary cam especially for bucket loaders - Google Patents

Device to unlock a rotary cam especially for bucket loaders Download PDF

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Publication number
EP0671513A1
EP0671513A1 EP95400456A EP95400456A EP0671513A1 EP 0671513 A1 EP0671513 A1 EP 0671513A1 EP 95400456 A EP95400456 A EP 95400456A EP 95400456 A EP95400456 A EP 95400456A EP 0671513 A1 EP0671513 A1 EP 0671513A1
Authority
EP
European Patent Office
Prior art keywords
shaft
cam
piston
bucket
unlock
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
EP95400456A
Other languages
German (de)
French (fr)
Other versions
EP0671513B1 (en
Inventor
Marcel Morin
Jacques Morin
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.)
A RESPONSABILITE MORIN FRERES Ltee Ste
Original Assignee
A RESPONSABILITE MORIN FRERES Ltee Ste
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 A RESPONSABILITE MORIN FRERES Ltee Ste filed Critical A RESPONSABILITE MORIN FRERES Ltee Ste
Publication of EP0671513A1 publication Critical patent/EP0671513A1/en
Application granted granted Critical
Publication of EP0671513B1 publication Critical patent/EP0671513B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/02—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member
    • F15B15/06—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement
    • F15B15/065—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement the motor being of the rack-and-pinion type
    • 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
    • E02F3/3663—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat hydraulically-operated

Definitions

  • the present invention relates to a device for unlocking a rotary cam.
  • European Patent No. 438931 which relates to a device for automatically fixing a bucket to the end of the arm of a loader by means of a hooking member comprising rotary cams which provide a locking function, said cams, under the action of springs bearing against a shaft carried by said bucket.
  • the device of the invention which overcomes this drawback, is remarkable in that the body of the cam is integral with a cylinder comprising a piston whose displacement, under the effect of a fluid introduced into said cylinder, is likely to rotate the cam against the action of its return spring.
  • FIG. 1 shows an assembly to which, among other things, the device of the invention can be applied, it can be seen that the bucket 1 is attached to the end of an arm 2 by means of an attachment member 3.
  • the attachment member comprises a shaft 4, on which are rotatable cams 5, and the bucket 1 has a shaft 6 under which said cams can bear by pivoting according to arrow F1 under the action of springs.
  • the rear part of the bucket 1 has a cradle in which the shaft 5 is housed during the pivoting of the attachment member 3.
  • This device allowed the automatic attachment of the bucket, but to perform its stall, the operator of the machine had to get off and manually rotate the cams 5 in the opposite direction to the arrow F1 to unlock said bucket.
  • the aim of the present invention which overcomes this drawback, is to propose a device which, for example, applied to the bucket described with reference to FIG. 1, will allow the user to perform the unlocking without having to intervene manually, therefore, according to the example chosen, without getting off his machine.
  • the cam 5 is mounted freely in rotation on the shaft 4 belonging to a movable member relative to a second member comprising the shaft 6 or any stop capable of fulfilling the same function.
  • the shaft 4 is immobilized in rotation relative to its support, that is to say, in the case of the example of FIG. 1, relative to the attachment member 3.
  • this result is obtained by providing on the body of the cam 5 a cylinder 7 having a piston 8 whose movement, under the effect of a fluid introduced into said cylinder, causes said cam to pivot according to the arrow F2.
  • the shaft 4 has teeth 9 engaged with teeth 10 provided on the head 8a of the piston 8.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Lock And Its Accessories (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Pinball Game Machines (AREA)
  • Holders For Apparel And Elements Relating To Apparel (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Transmission Devices (AREA)
  • Shovels (AREA)
  • Hydraulic Motors (AREA)
  • Gears, Cams (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

The cam release mechanism, e.g. for a loader bucket, comprises a cam housing which is joined to a cylinder (7) containing a piston (8) which is moved by a fluid under pressure to make the cam (5) rotate relative to the shaft (4) on which it is mounted. The piston is made with teeth (9) which mesh with others on the shaft (10). The mechanism, which can be used, for example, to lock a loader bucket relative to a transverse shaft (6), is designed so that the locking mechanism can be engaged or released remotely, without the operator having to leave his cab.

Description

La présente invention est relative à un dispositif pour déverrouiller une came rotative.The present invention relates to a device for unlocking a rotary cam.

Il existe des ensembles mécaniques selon lesquels deux organes, articulés l'un à l'autre, peuvent être immobilisés dans une position déterminée à l'aide d'une came pouvant pivoter librement sur un arbre du premier organe pour prendre automatiquement appui contre un arbre du second organe sous l'action de ressorts.There are mechanical assemblies according to which two members, articulated to one another, can be immobilized in a determined position using a cam which can pivot freely on a shaft of the first member to automatically bear against a shaft of the second organ under the action of springs.

Un exemple d'un tel ensemble est décrit dans le brevet européen N° 438931 qui concerne un dispositif pour fixer automatiquement un godet à l'extrémité du bras d'un chargeur par l'entremise d'un organe d'accrochage comportant des cames rotatives qui assurent une fonction de verrouillage, lesdites cames, sous l'action de ressorts prenant appui contre un arbre porté par ledit godet.An example of such an assembly is described in European Patent No. 438931 which relates to a device for automatically fixing a bucket to the end of the arm of a loader by means of a hooking member comprising rotary cams which provide a locking function, said cams, under the action of springs bearing against a shaft carried by said bucket.

Le dispositif décrit dans le brevet précité ne donne pas totalement satisfaction. En effet, si ce dispositif permet l'accrochage automatique du godet, une intervention humaine est nécessaire lors du décrochage pour déverrouiller les cames en les faisant pivoter en sens inverse de celui selon lequel les ressorts les poussent.The device described in the aforementioned patent is not entirely satisfactory. Indeed, if this device allows the automatic attachment of the bucket, human intervention is necessary during the stall to unlock the cams by rotating them in the opposite direction to that in which the springs push them.

Le dispositif de l'invention, qui remédie à cet inconvénient, est remarquable en ce que le corps de la came est solidaire d'un cylindre comportant un piston dont le déplacement, sous l'effet d'un fluide introduit dans ledit cylindre, est susceptible de faire pivoter la came à l'encontre de l'action de son ressort de rappel.The device of the invention, which overcomes this drawback, is remarkable in that the body of the cam is integral with a cylinder comprising a piston whose displacement, under the effect of a fluid introduced into said cylinder, is likely to rotate the cam against the action of its return spring.

La présente invention sera mieux comprise par la description qui va suivre faite en se référant au dessin annexé à titre d'exemple indicatif seulement sur lequel :

  • -la figure 1 montre la fixation d'un godet à l'extrémité du bras d'un chargeur à l'aide d'un dispositif tel que celui décrit dans le brevet européen N° 438931;
  • la figure 2 est une vue partielle et à plus grande échelle montrant le dispositif de l'invention.
The present invention will be better understood from the description which follows, given with reference to the accompanying drawing by way of indicative example only, in which:
  • FIG. 1 shows the attachment of a bucket to the end of the arm of a loader using a device such as that described in European patent No. 438931;
  • Figure 2 is a partial view on a larger scale showing the device of the invention.

En se reportant à la figure 1, qui montre un ensemble auquel, entre autres, peut être appliqué le dispositif de l'invention, on voit que le godet 1 est accroché à l'extrémité d'un bras 2 par l'entremise d'un organe d'accrochage 3.Referring to FIG. 1, which shows an assembly to which, among other things, the device of the invention can be applied, it can be seen that the bucket 1 is attached to the end of an arm 2 by means of an attachment member 3.

L'organe d'accrochage comporte un arbre 4, sur lequel sont montées des cames rotatives 5, et le godet 1 présente un arbre 6 sous lequel lesdites cames peuvent prendre appui en pivotant selon la flèche F₁ sous l'action de ressorts.The attachment member comprises a shaft 4, on which are rotatable cams 5, and the bucket 1 has a shaft 6 under which said cams can bear by pivoting according to arrow F₁ under the action of springs.

La partie arrière du godet 1 présente un berceau dans lequel se loge l'arbre 5 lors du pivotement de l'organe d'accrochage 3.The rear part of the bucket 1 has a cradle in which the shaft 5 is housed during the pivoting of the attachment member 3.

Pour plus de détails sur ce dispositif, on se reportera au brevet européen n° 438931 déjà cité.For more details on this device, reference is made to European patent No. 438931 already cited.

Ce dispositif permettait l'accrochage automatique du godet, mais pour effectuer son décrochage, le conducteur de l'engin devait en descendre et manuellement faire pivoter les cames 5 en sens inverse de la flèche F₁ pour déverrouiller ledit godet.This device allowed the automatic attachment of the bucket, but to perform its stall, the operator of the machine had to get off and manually rotate the cams 5 in the opposite direction to the arrow F₁ to unlock said bucket.

La présente invention, qui remédie à cet inconvénient, a pour but de proposer un dispositif qui appliqué, par exemple, au godet décrit en regard de la figure 1, permettra à l'utilisateur d'effectuer le déverrouillage sans devoir intervenir manuellement donc, selon l'exemple choisi, sans descendre de son engin.The aim of the present invention, which overcomes this drawback, is to propose a device which, for example, applied to the bucket described with reference to FIG. 1, will allow the user to perform the unlocking without having to intervene manually, therefore, according to the example chosen, without getting off his machine.

En se reportant à la figure 2 on voit que la came 5 est montée librement en rotation sur l'arbre 4 appartenant à un organe mobile par rapport à un second organe comportant l'arbre 6 ou toute butée susceptible de remplir la même fonction. L'arbre 4 est immobilisé en rotation par rapport à son support c'est-à-dire, dans le cas de l'exemple de la figure 1, par rapport à l'organe d'accrochage 3.Referring to Figure 2 we see that the cam 5 is mounted freely in rotation on the shaft 4 belonging to a movable member relative to a second member comprising the shaft 6 or any stop capable of fulfilling the same function. The shaft 4 is immobilized in rotation relative to its support, that is to say, in the case of the example of FIG. 1, relative to the attachment member 3.

Dans la position représentée sur la figure 2, l'ensemble est verrouillé. Le problème posé consiste à commander, à distance, la rotation de la came 5 selon une direction F₂ opposée à celle F₁.In the position shown in Figure 2, the assembly is locked. The problem is to control, remotely, the rotation of the cam 5 in a direction F₂ opposite to that F₁.

Selon l'invention, ce résultat est obtenu en prévoyant sur le corps de la came 5 un cylindre 7 présentant un piston 8 dont le déplacement, sous l'effet d'un fluide introduit dans dans ledit cylindre, fait pivoter ladite came selon la flèche F₂.According to the invention, this result is obtained by providing on the body of the cam 5 a cylinder 7 having a piston 8 whose movement, under the effect of a fluid introduced into said cylinder, causes said cam to pivot according to the arrow F₂.

Selon un mode de réalisation, l'arbre 4 présente des dents 9 en prise avec des dents 10 prévues sur la tête 8a du piston 8.According to one embodiment, the shaft 4 has teeth 9 engaged with teeth 10 provided on the head 8a of the piston 8.

Lorsque qu'un fluide sous pression est introduit dans le cylindre 7 par son orifice 11, le piston se déplace à l'intérieur dudit cylindre selon la flèche F₃ et tend à faire pivoter l'arbre 4. Comme l'arbre 4 est fixe, ce pivotement est impossible et c'est l'ensemble came-cylindre qui pivote selon la flèche F₂, la came 5 échappant alors à l'arbre 6.When a pressurized fluid is introduced into the cylinder 7 through its orifice 11, the piston moves inside said cylinder according to the arrow F₃ and tends to rotate the shaft 4. As the shaft 4 is fixed, this pivoting is impossible and it is the cam-cylinder assembly which pivots according to the arrow F₂, the cam 5 then escaping from the shaft 6.

Lorsque la pression est supprimée, les ressorts usuels rapellent la came et le piston 8 dans la position qu'ils occupaient précedemment par rapport à l'arbre 4.When the pressure is removed, the usual springs call the cam and the piston 8 back to the position they previously occupied relative to the shaft 4.

Claims (2)

1-Dispositif pour déverrouiller une came rotative montée librement sur un arbre (4) fixe, caractérisé en ce que le corps de la came (5) est solidaire d'un cylindre (7) comportant un piston (8) dont le déplacement, sous l'effet d'un fluide sous pression, est susceptible de faire pivoter ladite came par rapport à l'arbre (4). 1- Device for unlocking a rotary cam freely mounted on a fixed shaft (4), characterized in that the body of the cam (5) is integral with a cylinder (7) comprising a piston (8) whose movement, under the effect of a pressurized fluid is liable to cause said cam to pivot relative to the shaft (4). 2-Dispositif selon la revendication 1, caractérisé en ce que la tête (8a) du piston (8) présente des dents (9) en prise avec des dents (10) taillées sur l'arbre (4). 2- Device according to claim 1, characterized in that the head (8a) of the piston (8) has teeth (9) engaged with teeth (10) cut on the shaft (4).
EP95400456A 1994-03-11 1995-03-03 Device to unlock a rotary cam especially for bucket loaders Expired - Lifetime EP0671513B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9402821A FR2717198B1 (en) 1994-03-11 1994-03-11 Device for unlocking a rotary cam.
FR9402821 1994-03-11

Publications (2)

Publication Number Publication Date
EP0671513A1 true EP0671513A1 (en) 1995-09-13
EP0671513B1 EP0671513B1 (en) 1998-10-07

Family

ID=9460920

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95400456A Expired - Lifetime EP0671513B1 (en) 1994-03-11 1995-03-03 Device to unlock a rotary cam especially for bucket loaders

Country Status (6)

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EP (1) EP0671513B1 (en)
AT (1) ATE171991T1 (en)
DE (1) DE69505167T2 (en)
DK (1) DK0671513T3 (en)
ES (1) ES2124974T3 (en)
FR (1) FR2717198B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2900168A1 (en) * 2006-04-21 2007-10-26 Morin Soc Par Actions Simplifi COUPLER FOR MIXED UNLOCKING WORK EQUIPMENT

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0578447A1 (en) * 1992-07-04 1994-01-12 Fermec Manufacturing Limited Implement attachment coupler
EP0598689A1 (en) * 1992-10-16 1994-05-25 Ingenjörsfirma Rason Aktiebolag Actuator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0578447A1 (en) * 1992-07-04 1994-01-12 Fermec Manufacturing Limited Implement attachment coupler
EP0598689A1 (en) * 1992-10-16 1994-05-25 Ingenjörsfirma Rason Aktiebolag Actuator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2900168A1 (en) * 2006-04-21 2007-10-26 Morin Soc Par Actions Simplifi COUPLER FOR MIXED UNLOCKING WORK EQUIPMENT
WO2007122317A1 (en) * 2006-04-21 2007-11-01 Morin S.A.S. Mixed unlocking coupler for heavy-construction machine

Also Published As

Publication number Publication date
FR2717198A1 (en) 1995-09-15
ES2124974T3 (en) 1999-02-16
DE69505167D1 (en) 1998-11-12
ATE171991T1 (en) 1998-10-15
DK0671513T3 (en) 1999-06-21
FR2717198B1 (en) 1996-04-05
DE69505167T2 (en) 1999-04-22
EP0671513B1 (en) 1998-10-07

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