EP3009570B1 - Tool holder for a construction or public works vehicle - Google Patents

Tool holder for a construction or public works vehicle Download PDF

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Publication number
EP3009570B1
EP3009570B1 EP15188105.9A EP15188105A EP3009570B1 EP 3009570 B1 EP3009570 B1 EP 3009570B1 EP 15188105 A EP15188105 A EP 15188105A EP 3009570 B1 EP3009570 B1 EP 3009570B1
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EP
European Patent Office
Prior art keywords
tool
tool holder
gripping
locking cylinder
gripping pins
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.)
Active
Application number
EP15188105.9A
Other languages
German (de)
French (fr)
Other versions
EP3009570C0 (en
EP3009570A1 (en
Inventor
Henri Marchetta
Maxime Boni
Nicolas PUTOD
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.)
Groupe Mecalac SAS
Original Assignee
Groupe Mecalac 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 Groupe Mecalac SAS filed Critical Groupe Mecalac SAS
Publication of EP3009570A1 publication Critical patent/EP3009570A1/en
Application granted granted Critical
Publication of EP3009570C0 publication Critical patent/EP3009570C0/en
Publication of EP3009570B1 publication Critical patent/EP3009570B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • E02F3/3663—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat hydraulically-operated
    • 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
    • E02F3/30—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 with a dipper-arm pivoted on a cantilever beam, i.e. boom
    • E02F3/308—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 with a dipper-arm pivoted on a cantilever beam, i.e. boom working outwardly
    • 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
    • E02F3/30—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 with a dipper-arm pivoted on a cantilever beam, i.e. boom
    • E02F3/32—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 with a dipper-arm pivoted on a cantilever beam, i.e. boom working downwardly and towards the machine, e.g. with backhoes
    • 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
    • E02F3/3618—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with two separating hooks
    • 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
    • E02F3/3636—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat using two or four movable transversal pins

Definitions

  • the present invention relates to the technical field of public works machinery. It relates to a tool carrier for construction machinery used for example on urban construction sites, railway works, service and maintenance sites.
  • the invention relates more particularly to a tool holder for construction machinery, allowing the driver of the machinery to pick up and automatically assemble a work tool.
  • Construction or public works machines of the handling machine, loader or elevator type, of the loader-excavator type earth-moving machine or the like comprise work equipment in the form of an articulated arm, at the end of which is installed a work tool.
  • the work tools generally consist of either a bucket, a shovel, a loading bucket, or a hydraulic tool (for example, rock breaker, auger, brush cutter, etc.) or others still, depending on the type of use.
  • a hydraulic tool for example, rock breaker, auger, brush cutter, etc.
  • changing and assembling these work tools proves to be a long and difficult operation, taking into account on the one hand, the mass of each of them, and on the other hand, the conditions under which this change takes place, most generally on site, that is to say on construction sites.
  • the Applicant has described a construction machine comprising an arm at the end of which is fixed a tool holder allowing the automatic handling of a tool.
  • the assembly of the tool on the tool holder is carried out by means of several sets of frustoconical pins present on the tool holder and corresponding housings carried by the tool.
  • the driver wishes to attach a tool to the tool holder, he must simultaneously insert the pairs of nipples into the housings. To do this, the driver must position the construction machine in relation to the tool so that the nipples are strictly aligned with the female housings.
  • This alignment step requires a certain amount of dexterity on the part of the driver because he must first correctly position the construction machine in relation to the tool so that the pins are aligned with the housings then, secondly, control the articulated arm so that the nipples fit into the female housings.
  • the Applicant subsequently proposed in the document FR 2 708 679 A1 a tool holder comprising housings in a lower part and a horizontal axis in an upper part.
  • the horizontal axis makes it easier to insert the pins present at a lower part of the tool into the housings of the tool holder.
  • the tool comprises at an upper part a set of legs having lights, intended to serve as a guide to the horizontal axis of the tool holder.
  • the horizontal axis is engaged and progresses through said slots, the tool tilts until the sockets automatically engage in the female housings.
  • the document DE 41 09 783 offers a fixing device between a tool and a tool holder by means of a movable cylinder ensuring locking of the tool on the tool holder.
  • the tool comprises a front anchor point and a rear anchor point intended to receive two axes of the tool holder.
  • Each anchor point comprises two C-shaped pieces intended to surround a part corresponding substantially to 50% of the perimeter of the axis of the tool holder.
  • the cylinder adjusts the distance between the C-shaped parts so as to lock the tool holder axes in the C-shaped parts to lock the tool on the tool holder.
  • the C-shaped parts do not allow the tool to be retained on the tool holder, particularly in the event of a large amplitude tilting movement.
  • the object of the present invention therefore aims to overcome the drawbacks of the prior art by proposing a new tool holder for construction equipment, allowing a driver of the machine to grasp a tool with greater freedom in the positioning of the machine relative to the tool.
  • Another objective of the invention is to provide a solution which makes it possible to eliminate, or at least reduce to a minimum, the risk of the tool falling during assembly operations.
  • the pick-up of the tool by the construction machine is quick and easy, and the operator of the machine has perfect visibility of the parts that he must mutually engage.
  • Centering of the tool on the tool holder is done automatically, by tilting the tool on the gripping axes when it is lifted. Thanks to the gripping fingers, the tool cannot fall from the tool holder, even in the event of accidental unlocking.
  • the receiving parts are in the form of hooks or semi-circular notches whose internal diameter is slightly greater than the external diameter of the gripping axes which they are able to receive.
  • These hooks allow you to hold the tool safely, quickly and easily. They also allow the tool to be mounted in one direction or the other, which can be useful particularly for buckets, which can be used as a loader or as an excavator, i.e. upside down if necessary, because the tool holder is reversible.
  • the fixed part of the locking cylinder comprises a mounting axis on each of its lateral faces which is held on the fork by a chamfered retaining ring.
  • the movable part of the locking cylinder comprises a mounting axis on each of its faces lateral which is held at the end of the assembly of connecting rods and cylinders by a chamfered retaining ring.
  • the tool holder can thus take the tool at a small angle, thanks to the gripping chamfers.
  • the locking cylinder is a hydraulic cylinder.
  • the locking cylinder is equipped with a non-return valve which blocks the fluid in the large chamber when the locking cylinder is subjected to external forces.
  • This non-return valve can be placed in the stem as close as possible to the chamber to be protected. It helps prevent the gripping axes from accidentally coming together in order to prevent the tool from being unlocked unintentionally.
  • the locking cylinder has an overtravel provided so that the extended locking position of the locking cylinder does not correspond to the end of its stroke.
  • the tool holder is provided with play compensation to compensate for wear.
  • the different axes of the tool holder undergo a surface treatment aimed at increasing their resistance to wear and they are removable so that they can be easily replaced without having to completely disassemble the tool holder or replace it entirely.
  • the locking cylinder is equipped with means for detecting the position of the rod so as to ensure proper locking of the tool by the tool holder.
  • the tool can include receiving means on several of its faces to be taken by the tool holder in several locations and positions.
  • This architecture also allows a weight saving compared to known solutions.
  • the tool holder (1) as shown in isolation on the figure 1 is intended to equip the free end of the working arm (2) with a construction machine, for example of the excavator type, as shown in the figure 2 .
  • the working arm (2) comprises a balance wheel (3) ending in a fork (4) and equipped with a set of connecting rods and cylinders (5) intended to manipulate the tool (6) mounted on its free end.
  • This set of connecting rods and cylinders (5) is known to those skilled in the art and will not be detailed here.
  • the tool holder (1) comprises a locking cylinder (7) comprising a fixed part (8) mounted at the free end of the balance (3), and a movable part (9) connected to the fixed part (8) by a rod (10) and mounted at the end of the assembly of connecting rods and cylinders (5).
  • the locking cylinder (7) is a hydraulic cylinder.
  • the fixed part (8) of the cylinder locking (7) has a mounting pin (13, 14) tiltably mounted between the flanges (15, 16) of the fork (4).
  • the mounting pins (13, 14) are mounted on the flanges (15, 16) and held laterally by the retaining rings (17, 18).
  • the movable part (9) of the locking cylinder (7) has a mounting axis (21, 22) mounted tilting at the end of the assembly connecting rods and cylinders (5), this assembly being locked laterally by retaining rings (23, 24).
  • the tool holder (1) is thus mounted tilting at the level of the free end of the balance (3) so as to be able to pivot in a vertical plane by the movements of the set of connecting rods and cylinders (5).
  • Each of the mounting axes (13, 14, 21, 22) extends beyond the retaining rings (17, 18, 23, 24) by a gripping axis (25, 26, 27, 28).
  • first gripping axes 25, 26
  • second gripping axes 27, 28
  • the different axes (13, 14, 21, 22, 25, 26, 27, 28) of the tool holder (1) are the only parts likely to wear out by friction with the other parts in contact. Consequently, these axes (13, 14, 21, 22, 25, 26, 27, 28) preferentially undergo a surface treatment aimed at increasing their resistance to wear, and they are removable so as to be able to be replaced easily without having to completely disassemble the tool holder (1), nor replace it entirely.
  • the tool holder (1) makes it possible to assemble a tool (6) in a reversible manner, thus allowing, for example, to mount a bucket in the excavation position (cf. Figure 3 ) or in loading position (see Figure 4 ).
  • tool (6) is shown by way of example in the form of a bucket, it is understood that the invention is intended for all types of work tools such as those mentioned above .
  • the tool (6) comprises at least two receiving assemblies (29, 30) designed to cooperate with the gripping axes (25, 26, 27, 28) of the tool holder (1).
  • These receiving assemblies (29, 30) can be provided on the rear face of the tool (6), that is to say on its face directed towards the tool holder (1) when it is mounted on that -this. They can also be provided on the front face of the tool (6), particularly in the case where it can be used on one side or the other.
  • the sets of reception (29, 30) can be provided in one direction or the other.
  • these receiving assemblies (29, 30) must always be provided in pairs for receiving the gripping axes (25, 26, 27, 28), a receiving assembly (29 , 30) which can be common to two adjacent pairs.
  • Each receiving assembly (29, 30) has two receiving parts (31, 32, 33, 34) whose openings are opposite each other and each intended to receive one of the gripping axes (25, 26, 27, 28 ).
  • These receiving parts (31, 32, 33, 34) are preferably in the form of hooks or semi-circular notches whose internal diameter is slightly greater than the external diameter of the gripping axes (25, 26, 27, 28) which they get.
  • the first receiving parts (31, 33) each have a gripping finger (35, 36) partially covering their opening, while the second receiving parts (32, 34) do not. .
  • gripping fingers 35, 36
  • These gripping fingers facilitate and secure the gripping of a tool (6) by the tool holder (1) as described below.
  • the operator moves the working arm (2) so as to approach the tool holder (1) at the level of the receiving assemblies (29, 30) and to introduce the first gripping axes (25, 26) into the first receiving parts (31, 33) under the gripping fingers (35, 36).
  • This step does not present any particular difficulty for the operator who has a clear view of the tool holder (1) and the receiving assemblies (29, 30) of the tool (6).
  • the retaining rings (17, 18) and (23, 24) are preferably chamfered to guide and facilitate the gripping of the tool (6) by the gripping axes (25, 26, 27, 28) of the tool holder (1).
  • the operator then raises the working arm (2) (cf. Figure 6 ) so as to lift the tool (6) at the level of the first receiving parts (31, 33) by the first gripping axes (25, 26).
  • the first gripping axes (25, 26) come to rest at the bottom of the first receiving parts (31, 33) and the tool (6) is centered on it -even on the tool holder (1).
  • the tool (6) is then suspended by the first gripping axes (25, 26) in a tilting manner around the receiving assemblies (29, 30). Thanks to the fingers of gripping (35, 36), the tool is not likely to become detached from the first gripping axes (25, 26), even in the event of a large amplitude rocking movement.
  • the locking cylinder (7) is then retracted (see figure 7 ), so as to bring the first gripping axes (25, 26) as close as possible to the second gripping axes (27, 28).
  • the operator then activates the set of connecting rods and cylinders (5) of the working arm (2) (cf. figure 8 ) so as to introduce the second gripping axes (27, 28) into the receiving assemblies (29, 30).
  • the cylinder being in the retracted position, the second gripping axes (27, 28) can thus penetrate into the receiving assemblies (29, 30) and find themselves facing the second receiving parts (32, 34).
  • the locking cylinder (7) is then extended (see Figure 10 ), so as to distance the first gripping axes (25, 26) from the second gripping axes (27, 28). These gripping axes (25, 26, 27, 28) then find themselves engaged at the bottom of each of their associated receiving part (31, 33, 34, 35), which blocks the tool (6) in position.
  • the tool (6) is then locked on the tool holder (1) and can be used in a conventional manner (see Figure 11 ).
  • the first gripping axes (25, 26) are then introduced into the receiving assemblies (29, 30), and are found opposite the second parts receptors (32, 34) (cf. Figure 15 ). The operator then continues the movement of the set of connecting rods and cylinders (5) until the tool (6) tilts around the second gripping axes (27, 28).
  • the tool (6) is then locked on the tool holder (1) and can be used in a conventional manner (see Figure 17 ).
  • the sequences described above are substantially similar.
  • the tool holder (1) advantageously allows a tool (6) to be taken and locked in both directions.
  • the cylinder is in the extended position and the gripping axes (25, 26, 27, 28) are wedged into abutment at the bottom of each of their associated receiving part (31, 33, 34, 35).
  • the tool (6) is held and cannot be released.
  • the locking cylinder (7) is preferably equipped with a non-return valve which blocks the fluid in the large chamber when the cylinder locking (7) is subjected to external forces, for example induced by digging.
  • This non-return valve is preferably placed in the rod (10) as close as possible to the chamber to be protected, to avoid possible leaks between the chamber and the valve, if the latter were offset and connected to the chamber by flexible hoses. or the like.
  • the extended locking position of the locking cylinder (7) does not correspond to the end of stroke of this, which makes it possible to continue to use the same locking cylinder (7) for the tool holder (1) in the event of play originating for example from a problem of wear or deformation of the parts.
  • the extended locking position of the locking cylinder (7) requires a stroke greater than that previously necessary for locking, a greater stroke is available for the locking cylinder (7).
  • the locking cylinder (7) then comprises a means for detecting the position of the rod (10) so as to ensure proper locking of the tool (6) by the tool holder (1).
  • the invention as defined by the claims can be adapted to any type of tool, and the tools can comprise several receiving assemblies (29, 30) provided in pairs, for example on their front and rear faces in order to be able to freely mount them in one direction or the other on the tool holder (1).
  • a transport bucket allowing several tools to be transported with the one mounted on the machine for traveling on construction sites is shown on the Figure 20 , comprising several receiving assemblies (29, 30) provided in pairs.

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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)
  • Earth Drilling (AREA)
  • Shovels (AREA)
  • Automatic Tool Replacement In Machine Tools (AREA)

Description

Domaine techniqueTechnical area

La présente invention concerne le domaine technique des engins de travaux publics. Elle a trait à un porte-outil pour des engins de construction utilisés par exemple dans le cadre de chantiers urbains, de travaux ferroviaires, de chantier de service et de maintenance.The present invention relates to the technical field of public works machinery. It relates to a tool carrier for construction machinery used for example on urban construction sites, railway works, service and maintenance sites.

L'invention concerne plus particulièrement un porte-outil pour engin de chantier, permettant au conducteur de l'engin la prise et l'assemblage automatique d'un outil de travail.The invention relates more particularly to a tool holder for construction machinery, allowing the driver of the machinery to pick up and automatically assemble a work tool.

Etat de la techniqueState of the art

Les engins de chantier ou de travaux publics du type engin de manutention, chargeur ou élévateur, du type engin de terrassement chargeur-excavateur ou analogue comprennent un équipement de travail sous la forme d'un bras articulé, à l'extrémité duquel est installé un outil de travail.Construction or public works machines of the handling machine, loader or elevator type, of the loader-excavator type earth-moving machine or the like comprise work equipment in the form of an articulated arm, at the end of which is installed a work tool.

Les outils de travail sont généralement constitués soit d'un godet, soit d'une pelle, soit d'une benne chargeuse, soit d'un outil hydraulique (par exemple, brise roche, tarière, débroussailleuse, ...) ou d'autres encore, en fonction du type d'utilisation. D'une manière générale, le changement et l'assemblage de ces outils de travail s'avère une opération longue et difficile, compte-tenu d'une part, de la masse de chacun d'eux, et d'autre part, des conditions dans lesquelles s'effectue ce changement, le plus généralement sur site, c'est à dire sur les chantiers.The work tools generally consist of either a bucket, a shovel, a loading bucket, or a hydraulic tool (for example, rock breaker, auger, brush cutter, etc.) or others still, depending on the type of use. Generally speaking, changing and assembling these work tools proves to be a long and difficult operation, taking into account on the one hand, the mass of each of them, and on the other hand, the conditions under which this change takes place, most generally on site, that is to say on construction sites.

En moyenne, lors d'une journée de travail, le conducteur d'un engin de chantier peut être amené à changer d'outil plusieurs dizaines de fois par jour. Ces étapes de montage et de démontage nécessitent à chaque fois l'immobilisation de l'engin pendant quelques minutes. Ces temps d'immobilisation cumulés représentent une perte de productivité non négligeable.On average, during a working day, the driver of a construction machine may have to change tools several dozen times per day. These assembly and disassembly steps each time require the machine to be immobilized for a few minutes. These cumulative downtimes represent a significant loss of productivity.

Il existe donc un besoin de simplifier l'utilisation d'un dispositif d'attache d'un outil à un engin de chantier, pour permettre au conducteur de l'engin d'effectuer ces changements plus rapidement.There is therefore a need to simplify the use of a device for attaching a tool to a construction machine, to allow the driver of the machine to make these changes more quickly.

Dans le document FR 2 475 160 A1 , le Demandeur a décrit un engin de chantier comprenant un bras à l'extrémité duquel est fixé un porte-outil permettant la prise automatique d'un outil. L'assemblage de l'outil sur le porte-outil est réalisé au moyen de plusieurs jeux de tétons tronconiques présents sur le porte-outil et de logements correspondants portés par l'outil. Lorsque le conducteur souhaite attacher un outil sur le porte-outil, il lui est nécessaire d'insérer simultanément les paires de tétons dans les logements. Pour cela, le conducteur doit positionner l'engin de chantier par rapport à l'outil de sorte que les tétons soient rigoureusement alignés avec les logements femelles. Cette étape d'alignement nécessite de la part du conducteur une certaine dextérité car il doit dans un premier temps positionner correctement l'engin de chantier par rapport à l'outil pour que les tétons soient alignés avec les logements puis, dans un second temps, commander le bras articulé de sorte que les tétons s'insèrent dans les logements femelles.In the document FR 2 475 160 A1 , the Applicant has described a construction machine comprising an arm at the end of which is fixed a tool holder allowing the automatic handling of a tool. The assembly of the tool on the tool holder is carried out by means of several sets of frustoconical pins present on the tool holder and corresponding housings carried by the tool. When the driver wishes to attach a tool to the tool holder, he must simultaneously insert the pairs of nipples into the housings. To do this, the driver must position the construction machine in relation to the tool so that the nipples are strictly aligned with the female housings. This alignment step requires a certain amount of dexterity on the part of the driver because he must first correctly position the construction machine in relation to the tool so that the pins are aligned with the housings then, secondly, control the articulated arm so that the nipples fit into the female housings.

Compte tenu des dimensions relativement petites des logements sur l'outil, il peut être nécessaire au conducteur de réaliser plusieurs essais avant de réussir cet assemblage. Ces essais successifs représentent une perte de temps et un facteur de stress pour le conducteur.Given the relatively small dimensions of the housings on the tool, it may be necessary for the driver to carry out several tests before successfully completing this assembly. These successive tests represent a waste of time and a stress factor for the driver.

Pour faciliter cet assemblage, le Demandeur a par la suite proposé dans le document FR 2 708 679 A1 un porte-outil comprenant des logements dans une partie inférieure et un axe horizontal dans une partie supérieure. De façon avantageuse, l'axe horizontal permet de faciliter l'insertion des tétons présents au niveau d'une partie inférieure de l'outil dans les logements du porte-outil. Pour cela, l'outil comporte au niveau d'une partie supérieure un jeu de pattes présentant des lumières, destinées à servir de guide à l'axe horizontal du porte-outil. Lorsque l'axe horizontal est engagé et progresse dans lesdites lumières, l'outil bascule jusqu'à ce que les prises s'engagent automatiquement dans les logements femelles. Cette solution permet au conducteur de saisir l'outil plus facilement car, l'inclinaison du porte-outil par rapport à l'outil a alors peu d'influence.To facilitate this assembly, the Applicant subsequently proposed in the document FR 2 708 679 A1 a tool holder comprising housings in a lower part and a horizontal axis in an upper part. Advantageously, the horizontal axis makes it easier to insert the pins present at a lower part of the tool into the housings of the tool holder. For this, the tool comprises at an upper part a set of legs having lights, intended to serve as a guide to the horizontal axis of the tool holder. When the horizontal axis is engaged and progresses through said slots, the tool tilts until the sockets automatically engage in the female housings. This solution allows the driver to grip the tool more easily because the inclination of the tool holder relative to the tool then has little influence.

Néanmoins, il est toujours nécessaire au conducteur de positionner parfaitement l'engin par rapport à l'outil, de sorte que l'axe horizontal puisse s'insérer simultanément dans les lumières formées par le jeu de pattes du porte-outil. Autrement dit, si l'axe de la barre horizontal n'est pas parfaitement aligné avec un axe reliant les lumières, le conducteur risque de saisir de travers l'outil en engageant l'axe horizontal dans une seule des lumières.However, it is always necessary for the driver to perfectly position the machine in relation to the tool, so that the horizontal axis can be inserted simultaneously into the slots formed by the set of legs of the tool holder. In other words, if the axis of the horizontal bar is not perfectly aligned with an axis connecting the lights, the driver risks grasping the tool sideways by engaging the horizontal axis in only one of the lights.

Or, il peut s'avérer délicat de positionner correctement l'engin par rapport à l'outil en raison du caractère accidenté du chantier. Le conducteur peut ainsi perdre du temps à positionner correctement l'engin sur le chantier par rapport à l'outil. Ce problème de positionnement est d'autant plus critique lorsque l'engin de chantier se déplace sur des rails. Un mauvais positionnement de l'outil le long de la voie peut alors empêcher son saisissement par le conducteur.However, it can be difficult to correctly position the machine in relation to the tool due to the uneven nature of the site. The driver can thus waste time correctly positioning the machine on the site in relation to the tool. This positioning problem is all the more critical when the construction machine moves on rails. Improper positioning of the tool along the track can then prevent it from being seized by the driver.

Le document DE 41 09 783 propose un dispositif de fixation entre un outil et un porte-outil au moyen d'un vérin mobile assurant un verrouillage de l'outil sur le porte-outil. A cet effet, l'outil comporte un point d'ancrage avant et un point d'ancrage arrière destinés à recevoir deux axes du porte-outil. Chaque point d'ancrage comporte deux pièces en forme de C destinées à entourer une partie correspondant sensiblement à 50% du périmètre de l'axe du porte-outil. Le vérin permet de régler la distance entre les pièces en forme de C de sorte à bloquer les axes du porte-outil dans les pièces en forme de C pour verrouiller l'outil sur le porte-outil. Cependant, si le vérin présente une défaillance, les pièces en forme de C ne permettent pas de retenir l'outil sur le porte-outil, notamment en cas de mouvement de bascule de grande amplitude.The document DE 41 09 783 offers a fixing device between a tool and a tool holder by means of a movable cylinder ensuring locking of the tool on the tool holder. For this purpose, the tool comprises a front anchor point and a rear anchor point intended to receive two axes of the tool holder. Each anchor point comprises two C-shaped pieces intended to surround a part corresponding substantially to 50% of the perimeter of the axis of the tool holder. The cylinder adjusts the distance between the C-shaped parts so as to lock the tool holder axes in the C-shaped parts to lock the tool on the tool holder. However, if the cylinder fails, the C-shaped parts do not allow the tool to be retained on the tool holder, particularly in the event of a large amplitude tilting movement.

Description de l'inventionDescription of the invention

L'objet de la présente invention vise par conséquent à pallier les inconvénients de l'art antérieur en proposant un nouveau porte-outil pour engin de chantier, permettant à un conducteur de l'engin de saisir un outil avec une plus grande liberté dans le positionnement de l'engin par rapport à l'outil. Un autre objectif de l'invention est de fournir une solution qui permette d'éliminer, ou à tout le moins de réduire au minimum les risques de chute de l'outil lors des opérations d'assemblage.The object of the present invention therefore aims to overcome the drawbacks of the prior art by proposing a new tool holder for construction equipment, allowing a driver of the machine to grasp a tool with greater freedom in the positioning of the machine relative to the tool. Another objective of the invention is to provide a solution which makes it possible to eliminate, or at least reduce to a minimum, the risk of the tool falling during assembly operations.

Les objets assignés à l'invention sont atteints à l'aide d'un ensemble formé d'un outil et d'un porte-outil prévu pour permettre l'assemblage rapide et réversible d'un outil sur l'extrémité libre du bras de travail d'un engin de chantier ou de travaux publics, le bras de travail comprenant un balancier terminé par une fourche et équipé d'un ensemble de bielles et de vérins prévus pour manipuler l'outil lorsqu'il est monté sur son extrémité libre, caractérisé en ce que :

  • le porte-outil comprend un vérin de verrouillage comportant une partie fixe montée à rotation sur l'extrémité libre du balancier, et une partie mobile reliée à la partie fixe par une tige et montée pivotante sur l'extrémité de l'ensemble de bielles et de vérins ;
  • le porte-outil comprend deux premiers axes de préhension se prolongeant latéralement de chaque côté de la partie fixe et deux seconds axes de préhension se prolongeant latéralement de chaque côté de la partie mobile du vérin de verrouillage ;
  • l'outil comprend au moins deux ensembles de réception aptes à coopérer avec les axes de préhension du porte-outil ;
  • chaque ensemble de réception comportant deux doigts de préhension formant une première partie réceptrice et une seconde partie réceptrice dont les ouvertures sont en vis-à-vis et prévues chacune pour recevoir un des premiers axes de préhension et un des seconds axes de préhension pour maintenir l'outil sur le porte-outil ;
  • l'outil est apte à être verrouillé et déverrouillé sur le porte-outil au moyen du vérin de verrouillage en faisant varier de façon réversible la distance séparant la partie mobile de la partie fixe de celui-ci, entre une position sortie du vérin de verrouillage dans laquelle chacun des premiers axes de préhension est en butée au fond de sa partie réceptrice associée et chacun des seconds axes de préhension est en butée au fond de sa partie réceptrice associée, et une position entrée du vérin de verrouillage dans laquelle les axes de préhension peuvent être extraits des ensembles de réception ;
  • la forme des doigts de préhension étant adaptée pour que l'outil ne se décroche pas des premiers axes de préhension en cas de mouvement de bascule de grande amplitude pendant le montage de l'outil, et les premières
parties réceptrices présentent chacune un doigt de préhension recouvrant partiellement leur ouverture, tandis que les secondes parties réceptrices en sont dépourvues, de sorte que le montage de l'outil comporte les étapes dans lesquelles ;
  • l'opérateur déplace le bras de travail de manière à approcher le porte-outil au niveau des ensembles de réception et à introduire les premiers axes de préhension dans les premières parties réceptrices sous les doigts de préhension;
  • l'opérateur remonte le bras de travail de manière à soulever l'outil au niveau des premières parties réceptrices par les premiers axes de préhension. Ce faisant, par le propre poids de l'outil, les premiers axes de préhension viennent se caler au fond des premières parties réceptrices et l'outil se centre de lui-même sur le porte-outil,
  • le vérin de verrouillage est rentré, de manière à rapprocher au maximum les premiers axes de préhension des seconds axes de préhension;
  • l'opérateur actionne alors l'ensemble de bielles et de vérins du bras de travail de manière à introduire les seconds axes de préhension dans les ensembles de réception, et de manière faire venir les seconds axes de préhension en butée dans le fond des ensembles de réception et à y exercer une poussée qui provoque le basculement de l'outil autour des premiers axes de préhension;
  • le vérin de verrouillage est alors sorti, de manière à éloigner les premiers axes de préhension des seconds axes de préhension.
The objects assigned to the invention are achieved using an assembly formed of a tool and a tool holder provided to allow the rapid and reversible assembly of a tool on the free end of the arm of work of a construction site or public works machine, the working arm comprising a beam ending in a fork and equipped with a set of connecting rods and cylinders designed to manipulate the tool when it is mounted on its free end, characterized in that:
  • the tool holder comprises a locking cylinder comprising a fixed part rotatably mounted on the free end of the balance, and a movable part connected to the fixed part by a rod and pivotally mounted on the end of the set of connecting rods and cylinders;
  • the tool holder comprises two first gripping axes extending laterally on each side of the fixed part and two second gripping axes extending laterally on each side of the movable part of the locking cylinder;
  • the tool comprises at least two receiving assemblies capable of cooperating with the gripping axes of the tool holder;
  • each receiving assembly comprising two gripping fingers forming a first receiving part and a second receiving part whose openings are opposite each other and each provided to receive one of the first gripping axes and one of the second gripping axes to hold the tool on the tool holder;
  • the tool is able to be locked and unlocked on the tool holder by means of the locking cylinder by reversibly varying the distance separating the movable part from the fixed part thereof, between an extended position of the locking cylinder in which each of the first gripping axes abuts the bottom of its associated receiving part and each of the second gripping axes abuts the bottom of its associated receiving part, and an entered position of the locking cylinder in which the gripping axes can be extracted from the receiving sets;
  • the shape of the gripping fingers being adapted so that the tool does not become detached from the first gripping axes in the event of a large amplitude rocking movement during assembly of the tool, and the first
receiving parts each have a gripping finger partially covering their opening, while the second receiving parts do not, so that the assembly of the tool comprises the steps in which;
  • the operator moves the working arm so as to approach the tool holder at the level of the receiving assemblies and to introduce the first gripping axes into the first receiving parts under the gripping fingers;
  • the operator raises the working arm so as to lift the tool at the level of the first receiving parts by the first gripping axes. In doing so, by the tool's own weight, the first gripping axes are seated at the bottom of the first receiving parts and the tool centers itself on the tool holder,
  • the locking cylinder is retracted, so as to bring the first gripping axes as close as possible to the second gripping axes;
  • the operator then activates the set of connecting rods and cylinders of the working arm so as to introduce the second gripping axes into the receiving assemblies, and so as to bring the second gripping axes into abutment in the bottom of the assemblies of reception and to exert a thrust which causes the tool to tilt around the first gripping axes;
  • the locking cylinder is then extended, so as to move the first gripping axes away from the second gripping axes.

Ainsi, la prise de l'outil par l'engin de chantier est rapide et aisée, et l'opérateur de l'engin a une parfaite visibilité des pièces qu'il doit mutuellement engager. Le centrage de l'outil sur le porte-outil se fait automatiquement, par basculement de l'outil sur les axes de préhension lors de son soulèvement. Grâce aux doigts de préhension, l'outil ne peut pas chuter du porte-outil, même en cas de déverrouillage intempestif.Thus, the pick-up of the tool by the construction machine is quick and easy, and the operator of the machine has perfect visibility of the parts that he must mutually engage. Centering of the tool on the tool holder is done automatically, by tilting the tool on the gripping axes when it is lifted. Thanks to the gripping fingers, the tool cannot fall from the tool holder, even in the event of accidental unlocking.

Selon un exemple de mise en oeuvre de l'invention, les parties réceptrices sont en forme de crochets ou d'encoche semi-circulaire dont le diamètre interne est légèrement supérieur au diamètre externe des axes de préhension qu'ils sont aptes à recevoir. Ces crochets permettent une prise de l'outil à la fois sûre, rapide et aisée. Ils permettent également à l'outil d'être monté dans un sens ou dans l'autre, ce qui peut être utile en particulier pour les godets, qui peuvent être employés en chargeur ou en excavateur, à savoir tête en bas si nécessaire, car le porte-outil est réversible.According to an example of implementation of the invention, the receiving parts are in the form of hooks or semi-circular notches whose internal diameter is slightly greater than the external diameter of the gripping axes which they are able to receive. These hooks allow you to hold the tool safely, quickly and easily. They also allow the tool to be mounted in one direction or the other, which can be useful particularly for buckets, which can be used as a loader or as an excavator, i.e. upside down if necessary, because the tool holder is reversible.

Selon un exemple de mise en oeuvre supplémentaire de l'invention, la partie fixe du vérin de verrouillage comprend un axe de montage sur chacune de ses faces latérales qui est maintenu sur la fourche par une bague de maintien chanfreinée.According to an additional example of implementation of the invention, the fixed part of the locking cylinder comprises a mounting axis on each of its lateral faces which is held on the fork by a chamfered retaining ring.

Selon un autre exemple de mise en oeuvre de l'invention, la partie mobile du vérin de verrouillage comprend un axe de montage sur chacune de ses faces latérales qui est maintenu au niveau de l'extrémité de l'ensemble de bielles et de vérins par une bague de maintien chanfreinée.According to another example of implementation of the invention, the movable part of the locking cylinder comprises a mounting axis on each of its faces lateral which is held at the end of the assembly of connecting rods and cylinders by a chamfered retaining ring.

Le porte outil peut ainsi prendre l'outil avec un petit angle, grâce aux chanfreins de préhension.The tool holder can thus take the tool at a small angle, thanks to the gripping chamfers.

Selon un exemple de mise en oeuvre de l'invention, le vérin de verrouillage est un vérin hydraulique.According to an example of implementation of the invention, the locking cylinder is a hydraulic cylinder.

Selon un exemple supplémentaire de mise en oeuvre de l'invention, le vérin de verrouillage est équipé d'un clapet anti-retour qui bloque le fluide dans la grande chambre lorsque le vérin de verrouillage est soumis à des efforts externes. Ce clapet anti-retour peut être placé dans la tige au plus près de la chambre à protéger. Il permet d'éviter le rapprochement inopiné accidentel des axes de préhension afin d'éviter le déverrouillage intempestif de l'outil.According to an additional example of implementation of the invention, the locking cylinder is equipped with a non-return valve which blocks the fluid in the large chamber when the locking cylinder is subjected to external forces. This non-return valve can be placed in the stem as close as possible to the chamber to be protected. It helps prevent the gripping axes from accidentally coming together in order to prevent the tool from being unlocked unintentionally.

Selon un autre exemple de mise en oeuvre de l'invention, vérin de verrouillage présente une sur-course prévue pour que la position sortie de verrouillage du vérin de verrouillage ne corresponde pas à la fin de course de celui-ci. Ainsi, le porte-outil est prévu avec un rattrapage de jeu pour pallier l'usure.According to another example of implementation of the invention, the locking cylinder has an overtravel provided so that the extended locking position of the locking cylinder does not correspond to the end of its stroke. Thus, the tool holder is provided with play compensation to compensate for wear.

De même, les différents axes du porte-outil subissent un traitement de surface visant à augmenter leur résistance à l'usure et ils sont démontables de manière à pouvoir être remplacés facilement sans avoir à entièrement démonter le porte-outil ni à le remplacer entièrement.Likewise, the different axes of the tool holder undergo a surface treatment aimed at increasing their resistance to wear and they are removable so that they can be easily replaced without having to completely disassemble the tool holder or replace it entirely.

Selon un exemple supplémentaire de mise en oeuvre de l'invention, le vérin de verrouillage est équipé d'un moyen de détection de la position de la tige de sorte de s'assurer du bon verrouillage de l'outil par le porte-outil.According to an additional example of implementation of the invention, the locking cylinder is equipped with means for detecting the position of the rod so as to ensure proper locking of the tool by the tool holder.

Enfin parmi les nombreux autres avantages de l'invention, l'outil peut comporter des moyens récepteurs sur plusieurs de ses faces pour être pris par le porte-outil selon plusieurs emplacements et positions.Finally, among the many other advantages of the invention, the tool can include receiving means on several of its faces to be taken by the tool holder in several locations and positions.

Cette architecture permet également un gain de poids par rapport aux solutions connues.This architecture also allows a weight saving compared to known solutions.

Brève description des dessinsBrief description of the drawings

D'autres caractéristiques et avantages de la présente invention apparaîtront plus clairement à la lecture de la description qui va suivre, faite en référence aux dessins annexés, donnés à titre d'exemples non limitatifs, dans lesquels :

  • la figure 1 est une vue en perspective d'un porte-outil selon l'invention ;
  • la figure 2 est une vue en perspective du bras de travail d'un engin de chantier équipé d'un porte-outil selon l'invention ;
  • la figure 3 est une vue en perspective du bras de travail de la figure 1 avec un outil de type godet excavateur monté sur le porte-outil selon l'invention, dans laquelle le bras de travail et le porte-outil sont en fantôme ;
  • la figure 4 est une vue en perspective du bras de travail de la figure 1 avec un outil de type godet chargeur monté sur le porte-outil selon l'invention, dans laquelle le bras de travail et le porte-outil sont en fantôme ;
  • les figures 5 à 11 sont des vues de profil illustrant les séquences de préhension et de verrouillage d'un outil de type godet excavateur par un bras de travail équipé d'un porte-outil selon l'invention ;
  • les figures 12 à 17 sont des vues de profil illustrant les séquences de préhension et de verrouillage d'un outil de type godet rétro pris en chargeur par un bras de travail équipé d'un porte-outil selon l'invention ;
  • la figure 18 est vue de profil de détail d'un porte-outil selon l'invention en position de verrouillage d'un outil ;
  • la figure 19 est vue de profil de détail d'un porte-outil selon l'invention en position de déverrouillage d'un outil ; et
  • la figure 20 est une vue en perspective d'un godet de transport pour pelleteuse comprenant plusieurs prises adaptées pour permettre à un porte-outil selon l'invention de le saisir.
Other characteristics and advantages of the present invention will appear more clearly on reading the description which follows, made with reference to the appended drawings, given by way of non-limiting examples, in which:
  • there figure 1 is a perspective view of a tool holder according to the invention;
  • there figure 2 is a perspective view of the working arm of a construction machine equipped with a tool holder according to the invention;
  • there Figure 3 is a perspective view of the working arm of the figure 1 with an excavator bucket type tool mounted on the tool holder according to the invention, in which the working arm and the tool holder are phantom;
  • there Figure 4 is a perspective view of the working arm of the figure 1 with a loader bucket type tool mounted on the tool holder according to the invention, in which the working arm and the tool holder are phantom;
  • THE figures 5 to 11 are profile views illustrating the gripping and locking sequences of an excavator bucket type tool by a working arm equipped with a tool holder according to the invention;
  • THE figures 12 to 17 are profile views illustrating the gripping and locking sequences of a retro bucket type tool supported by a working arm equipped with a tool holder according to the invention;
  • there Figure 18 is a detailed profile view of a tool holder according to the invention in the tool locking position;
  • there Figure 19 is a detailed profile view of a tool holder according to the invention in the unlocking position of a tool; And
  • there Figure 20 is a perspective view of a transport bucket for an excavator comprising several sockets adapted to allow a tool holder according to the invention to grip it.

Mode(s) de réalisation de l'inventionMode(s) of carrying out the invention

Les éléments structurellement et fonctionnellement identiques présents sur plusieurs figures distinctes, sont affectés d'une même référence numérique ou alphanumérique.Structurally and functionally identical elements present on several distinct figures are assigned the same numerical or alphanumeric reference.

Le porte-outil (1) selon l'invention tel que représenté de manière isolée sur la figure 1 est prévu pour équiper l'extrémité libre du bras de travail (2) d'un engin de chantier, par exemple de type pelleteuse, comme cela est représenté sur la figure 2. Le bras de travail (2) comprend un balancier (3) terminé par une fourche (4) et équipé d'un ensemble de bielles et de vérins (5) prévus pour manipuler l'outil (6) monté sur son extrémité libre. Cet ensemble de bielles et de vérins (5) est connu de l'homme du métier et ne sera pas détaillé ici.The tool holder (1) according to the invention as shown in isolation on the figure 1 is intended to equip the free end of the working arm (2) with a construction machine, for example of the excavator type, as shown in the figure 2 . The working arm (2) comprises a balance wheel (3) ending in a fork (4) and equipped with a set of connecting rods and cylinders (5) intended to manipulate the tool (6) mounted on its free end. This set of connecting rods and cylinders (5) is known to those skilled in the art and will not be detailed here.

Le porte-outil (1) comprend un vérin de verrouillage (7) comportant une partie fixe (8) montée à l'extrémité libre du balancier (3), et une partie mobile (9) reliée à la partie fixe (8) par une tige (10) et montée à l'extrémité de l'ensemble de bielles et de vérins (5).The tool holder (1) comprises a locking cylinder (7) comprising a fixed part (8) mounted at the free end of the balance (3), and a movable part (9) connected to the fixed part (8) by a rod (10) and mounted at the end of the assembly of connecting rods and cylinders (5).

Le vérin de verrouillage (7) est un vérin hydraulique.The locking cylinder (7) is a hydraulic cylinder.

Sur chacune de ses faces latérales (11, 12) la partie fixe (8) du vérin de verrouillage (7) présente un axe de montage (13, 14) monté basculant entre les flasques (15, 16) de la fourche (4). Les axes de montage (13, 14) sont montés sur les flasques (15, 16) et maintenus latéralement par les bagues de maintien (17, 18).On each of its lateral faces (11, 12) the fixed part (8) of the cylinder locking (7) has a mounting pin (13, 14) tiltably mounted between the flanges (15, 16) of the fork (4). The mounting pins (13, 14) are mounted on the flanges (15, 16) and held laterally by the retaining rings (17, 18).

De manière similaire, sur chacune de ses faces latérales (19, 20) la partie mobile (9) du vérin de verrouillage (7) présente un axe de montage (21, 22) monté basculant au niveau de l'extrémité de l'ensemble de bielles et de vérins (5), ce montage étant verrouillé latéralement par des bagues de maintien (23, 24).Similarly, on each of its lateral faces (19, 20) the movable part (9) of the locking cylinder (7) has a mounting axis (21, 22) mounted tilting at the end of the assembly connecting rods and cylinders (5), this assembly being locked laterally by retaining rings (23, 24).

Le porte-outil (1) est ainsi monté basculant au niveau de l'extrémité libre du balancier (3) de manière à pouvoir pivoter dans un plan vertical par les mouvements de l'ensemble de bielles et de vérins (5).The tool holder (1) is thus mounted tilting at the level of the free end of the balance (3) so as to be able to pivot in a vertical plane by the movements of the set of connecting rods and cylinders (5).

Chacun des axes de montage (13, 14, 21, 22) se prolonge au-delà des bagues de maintien (17, 18, 23, 24) par un axe de préhension (25, 26, 27, 28).Each of the mounting axes (13, 14, 21, 22) extends beyond the retaining rings (17, 18, 23, 24) by a gripping axis (25, 26, 27, 28).

On distingue ainsi deux premiers axes de préhension (25, 26) se prolongeant latéralement au niveau de la partie fixe (8) du vérin de verrouillage (7), et deux seconds axes de préhension (27, 28) se prolongeant latéralement au niveau de la partie mobile (9) du vérin de verrouillage (7).We thus distinguish two first gripping axes (25, 26) extending laterally at the level of the fixed part (8) of the locking cylinder (7), and two second gripping axes (27, 28) extending laterally at the level of the movable part (9) of the locking cylinder (7).

Les différents axes (13, 14, 21, 22, 25, 26, 27, 28) du porte-outil (1) sont les seules pièces susceptibles de s'user par frottement avec les autres pièces en contact. Par conséquent, ces axes (13, 14, 21, 22, 25, 26, 27, 28) subissent préférentiellement un traitement de surface visant à augmenter leur résistance à l'usure, et ils sont démontables de manière à pouvoir être remplacé facilement sans avoir à entièrement démonter le porte-outil (1), ni à le remplacer entièrement.The different axes (13, 14, 21, 22, 25, 26, 27, 28) of the tool holder (1) are the only parts likely to wear out by friction with the other parts in contact. Consequently, these axes (13, 14, 21, 22, 25, 26, 27, 28) preferentially undergo a surface treatment aimed at increasing their resistance to wear, and they are removable so as to be able to be replaced easily without having to completely disassemble the tool holder (1), nor replace it entirely.

Tel qu'illustré sur les figures 3 et 4, le porte-outil (1) permet d'assembler un outil (6) de manière réversible, permettant ainsi, à titre d'exemple de monter un godet en position d'excavation (cf. figure 3) ou en position de chargement (cf. figure 4).As illustrated on the figures 3 and 4 , the tool holder (1) makes it possible to assemble a tool (6) in a reversible manner, thus allowing, for example, to mount a bucket in the excavation position (cf. Figure 3 ) or in loading position (see Figure 4 ).

Bien que sur les différentes figures l'outil (6) soit représenté à titre d'exemple sous la forme d'un godet, il est entendu que l'invention est prévue pour tout type d'outils de travail tels que ceux évoqués plus haut.Although in the different figures the tool (6) is shown by way of example in the form of a bucket, it is understood that the invention is intended for all types of work tools such as those mentioned above .

Dans ce but, l'outil (6) comporte au moins deux ensembles de réception (29, 30) prévus pour coopérer avec les axes de préhension (25, 26, 27, 28) du porte-outil (1). Ces ensembles de réception (29, 30) peuvent être prévus sur la face arrière de l'outil (6), c'est-à-dire sur sa face dirigée vers le porte-outil (1) lorsqu'il est monté sur celui-ci. Ils peuvent également être prévus sur la face avant de l'outil (6), notamment dans le cas où celui-ci peut être utilisé d'un côté ou de l'autre. De même, puisque le porte-outil (1) est réversible, les ensembles de réception (29, 30) peuvent être prévus dans un sens ou dans l'autre.For this purpose, the tool (6) comprises at least two receiving assemblies (29, 30) designed to cooperate with the gripping axes (25, 26, 27, 28) of the tool holder (1). These receiving assemblies (29, 30) can be provided on the rear face of the tool (6), that is to say on its face directed towards the tool holder (1) when it is mounted on that -this. They can also be provided on the front face of the tool (6), particularly in the case where it can be used on one side or the other. Likewise, since the tool holder (1) is reversible, the sets of reception (29, 30) can be provided in one direction or the other.

Néanmoins, quel que soit l'outil (6), ces ensembles de réception (29, 30) doivent toujours être prévus par paires pour la réception des axes de préhension (25, 26, 27, 28), un ensemble de réception (29, 30) pouvant être commun à deux paires adjacentes.However, whatever the tool (6), these receiving assemblies (29, 30) must always be provided in pairs for receiving the gripping axes (25, 26, 27, 28), a receiving assembly (29 , 30) which can be common to two adjacent pairs.

Chaque ensemble de réception (29, 30) présente deux parties réceptrices (31, 32, 33, 34) dont les ouvertures sont en vis-à-vis et prévues chacune pour recevoir un des axes de préhension (25, 26, 27, 28).Each receiving assembly (29, 30) has two receiving parts (31, 32, 33, 34) whose openings are opposite each other and each intended to receive one of the gripping axes (25, 26, 27, 28 ).

Ces parties réceptrices (31, 32, 33, 34) sont préférentiellement en forme de crochets ou d'encoche semi-circulaire dont le diamètre interne est légèrement supérieur au diamètre externe des axes de préhension (25, 26, 27, 28) qu'ils reçoivent.These receiving parts (31, 32, 33, 34) are preferably in the form of hooks or semi-circular notches whose internal diameter is slightly greater than the external diameter of the gripping axes (25, 26, 27, 28) which they get.

Pour chaque ensemble de réception (29, 30), les premières parties réceptrices (31, 33) présentent chacune un doigt de préhension (35, 36) recouvrant partiellement leur ouverture, tandis que les secondes parties réceptrices (32, 34) en sont dépourvues.For each receiving assembly (29, 30), the first receiving parts (31, 33) each have a gripping finger (35, 36) partially covering their opening, while the second receiving parts (32, 34) do not. .

Ces doigts de préhension (35, 36) facilitent et sécurisent la préhension d'un outil (6) par le porte-outil (1) comme cela est décrit ci-après.These gripping fingers (35, 36) facilitate and secure the gripping of a tool (6) by the tool holder (1) as described below.

En se référant maintenant aux figures 5 à 11, à titre d'exemple, nous allons décrire les séquences de préhension et de verrouillage d'un outil (6) de type godet excavateur par un bras de travail équipé d'un porte-outil (1).Referring now to the figures 5 to 11 , as an example, we will describe the gripping and locking sequences of a tool (6) of the excavator bucket type by a working arm equipped with a tool holder (1).

Alors que l'outil (6) est au sol (cf. figure 5), l'opérateur déplace le bras de travail (2) de manière à approcher le porte-outil (1) au niveau des ensembles de réception (29, 30) et à introduire les premiers axes de préhension (25, 26) dans les premières parties réceptrices (31, 33) sous les doigts de préhension (35, 36). Cette étape ne présente aucune difficulté particulière pour l'opérateur qui a une vue dégagée sur le porte-outil (1) et les ensembles de réception (29, 30) de l'outil (6).While the tool (6) is on the ground (cf. Figure 5 ), the operator moves the working arm (2) so as to approach the tool holder (1) at the level of the receiving assemblies (29, 30) and to introduce the first gripping axes (25, 26) into the first receiving parts (31, 33) under the gripping fingers (35, 36). This step does not present any particular difficulty for the operator who has a clear view of the tool holder (1) and the receiving assemblies (29, 30) of the tool (6).

Comme cela est notamment visible sur la figure 1, les bagues de maintien (17, 18) et (23, 24) sont préférentiellement chanfreinées pour guider et faciliter la prise de l'outil (6) par les axes de préhension (25, 26, 27, 28) du porte-outil (1).As is particularly visible on the figure 1 , the retaining rings (17, 18) and (23, 24) are preferably chamfered to guide and facilitate the gripping of the tool (6) by the gripping axes (25, 26, 27, 28) of the tool holder (1).

L'opérateur remonte alors le bras de travail (2) (cf. figure 6) de manière à soulever l'outil (6) au niveau des premières parties réceptrices (31, 33) par les premiers axes de préhension (25, 26). Ce faisant, par le propre poids de l'outil (6), les premiers axes de préhension (25, 26) viennent se caler au fond des premières parties réceptrices (31, 33) et l'outil (6) se centre de lui-même sur le porte-outil (1). L'outil (6) est alors suspendu par les premiers axes de préhension (25, 26) en bascule autour des ensembles de réception (29, 30). Grâce aux doigts de préhension (35, 36), l'outil n'est pas susceptible de se décrocher des premiers axes de préhension (25, 26), même en cas de mouvement de bascule de grande amplitude.The operator then raises the working arm (2) (cf. Figure 6 ) so as to lift the tool (6) at the level of the first receiving parts (31, 33) by the first gripping axes (25, 26). In doing so, by the own weight of the tool (6), the first gripping axes (25, 26) come to rest at the bottom of the first receiving parts (31, 33) and the tool (6) is centered on it -even on the tool holder (1). The tool (6) is then suspended by the first gripping axes (25, 26) in a tilting manner around the receiving assemblies (29, 30). Thanks to the fingers of gripping (35, 36), the tool is not likely to become detached from the first gripping axes (25, 26), even in the event of a large amplitude rocking movement.

Le vérin de verrouillage (7) est alors rentré (cf. figure 7), de manière à rapprocher au maximum les premiers axes de préhension (25, 26) des seconds axes de préhension (27, 28).The locking cylinder (7) is then retracted (see figure 7 ), so as to bring the first gripping axes (25, 26) as close as possible to the second gripping axes (27, 28).

L'opérateur actionne alors l'ensemble de bielles et de vérins (5) du bras de travail (2) (cf. figure 8) de manière à introduire les seconds axes de préhension (27, 28) dans les ensembles de réception (29, 30). Le vérin étant en position rentrée, les seconds axes de préhension (27, 28) peuvent ainsi pénétrer dans les ensembles de réception (29, 30) et se retrouver en face des secondes parties réceptrices (32, 34).The operator then activates the set of connecting rods and cylinders (5) of the working arm (2) (cf. figure 8 ) so as to introduce the second gripping axes (27, 28) into the receiving assemblies (29, 30). The cylinder being in the retracted position, the second gripping axes (27, 28) can thus penetrate into the receiving assemblies (29, 30) and find themselves facing the second receiving parts (32, 34).

L'opérateur continue ensuite le mouvement de l'ensemble de bielles et de vérins (5) du bras de travail (2) (cf. figure 9) de manière faire venir les seconds axes de préhension (27, 28) en butée dans le fond des ensembles de réception (29, 30) et à y exercer une poussée qui provoque le basculement de l'outil (6) autour des premiers axes de préhension (25, 26).The operator then continues the movement of the set of connecting rods and cylinders (5) of the working arm (2) (cf. Figure 9 ) so as to bring the second gripping axes (27, 28) into abutment at the bottom of the receiving assemblies (29, 30) and to exert a thrust there which causes the tool (6) to tilt around the first axes gripping (25, 26).

Lorsque l'opérateur constate le basculement de l'outil (6), il sait que celui-ci est bien en prise sur le porte-outil (1) et qu'il peut par conséquent le verrouiller.When the operator notices the tilting of the tool (6), he knows that it is firmly engaged on the tool holder (1) and that he can therefore lock it.

Pour cela, le vérin de verrouillage (7) est alors sorti (cf. figure 10), de manière à éloigner les premiers axes de préhension (25, 26) des seconds axes de préhension (27, 28). Ces axes de préhension (25, 26, 27, 28) se retrouvent alors engagées au fond de chacune de leur partie réceptrice (31, 33, 34, 35) associée, ce qui bloque l'outil (6) en position.To do this, the locking cylinder (7) is then extended (see Figure 10 ), so as to distance the first gripping axes (25, 26) from the second gripping axes (27, 28). These gripping axes (25, 26, 27, 28) then find themselves engaged at the bottom of each of their associated receiving part (31, 33, 34, 35), which blocks the tool (6) in position.

En bloquant le vérin de verrouillage (7) dans cette position, l'outil (6) est alors verrouillé sur le porte-outil (1) et peut être utilisé de manière classique (cf. figure 11).By blocking the locking cylinder (7) in this position, the tool (6) is then locked on the tool holder (1) and can be used in a conventional manner (see Figure 11 ).

En se référant maintenant aux figures 12 à 17, à titre d'exemple, on peut comprendre les séquences de préhension et de verrouillage d'un outil (6) de type godet rétro pris en chargeur par un bras de travail équipé d'un porte-outil (1).Referring now to the figures 12 to 17 , by way of example, we can understand the gripping and locking sequences of a tool (6) of the retro bucket type taken in a loader by a working arm equipped with a tool holder (1).

Alors que l'outil (6) est au sol (cf. figure 12), ce sont les seconds axes de préhension (27, 28) qui sont introduits dans les premières parties réceptrices (31, 33) sous les doigts de préhension (35, 36).While the tool (6) is on the ground (cf. Figure 12 ), these are the second gripping axes (27, 28) which are introduced into the first receiving parts (31, 33) under the gripping fingers (35, 36).

L'opérateur remonte alors le bras de travail (2) (cf. figure 13), puis le vérin de verrouillage (7) est rentré (cf. figure 14).The operator then raises the working arm (2) (cf. Figure 13 ), then the locking cylinder (7) is retracted (see Figure 14 ).

Les premiers axes de préhension (25, 26) sont alors introduits dans les ensembles de réception (29, 30), et se retrouvent en face des secondes parties réceptrices (32, 34) (cf. figure 15). L'opérateur continue ensuite le mouvement de l'ensemble de bielles et de vérins (5) jusqu'au basculement de l'outil (6) autour des seconds axes de préhension (27, 28).The first gripping axes (25, 26) are then introduced into the receiving assemblies (29, 30), and are found opposite the second parts receptors (32, 34) (cf. Figure 15 ). The operator then continues the movement of the set of connecting rods and cylinders (5) until the tool (6) tilts around the second gripping axes (27, 28).

L'opérateur actionne alors le vérin de verrouillage (7) en position sortie (cf. figure 16) pour bloquer l'outil (6) en position.The operator then activates the locking cylinder (7) in the extended position (cf. Figure 16 ) to lock the tool (6) in position.

L'outil (6) est alors verrouillé sur le porte-outil (1) et peut être utilisé de manière classique (cf. figure 17).The tool (6) is then locked on the tool holder (1) and can be used in a conventional manner (see Figure 17 ).

On notera que les séquences décrites ci-dessus sont sensiblement similaires. Pour des raisons évidentes de sécurité, quel que soit l'outil (6) à monter sur le bras de travail (2), on commence toujours par introduire les axes de préhension adaptés dans les premières parties réceptrices (31, 33) sous les doigts de préhension (35, 36). Par sa réversibilité, le porte-outil (1) permet avantageusement de prendre et de verrouiller un outil (6) dans les deux sens.Note that the sequences described above are substantially similar. For obvious safety reasons, whatever the tool (6) to be mounted on the working arm (2), we always start by introducing the suitable gripping axes into the first receiving parts (31, 33) under the fingers gripping (35, 36). By its reversibility, the tool holder (1) advantageously allows a tool (6) to be taken and locked in both directions.

Le principe de verrouillage l'outil (6) par le porte-outil (1) est représenté sur les figures 18 et 19.The principle of locking the tool (6) by the tool holder (1) is shown on the figures 18 and 19 .

Sur la figure 18, le vérin est en position sortie et les axes de préhension (25, 26, 27, 28) sont calés en butée au fond de chacune de leur partie réceptrice (31, 33, 34, 35) associée. L'outil (6) est maintenu et ne peut se décrocher. En cas de défaillance du vérin de verrouillage (7), ou si celui-ci est forcé de manière à extraire les axes de préhension (25, 26, 27, 28) hors de leur partie réceptrice (31, 33, 34, 35), seuls les axes de préhension (25, 26, 27, 28) situés dans les secondes parties réceptrices (32, 34) pourront s'extraire des ensembles de réception (29, 30), tandis que les autres axes de préhension (25, 26, 27, 28) resteront retenus dans les premières parties réceptrices (31, 33) en raison de la présence des doigts de préhension (35, 36). L'outil partiellement déverrouillé bascule alors autour de ces axes de préhension (25, 26, 27, 28) mais ne se décroche pas totalement du porte-outil (1) et ne peut pas chuter, ce qui est particulièrement sécuritaire.On the Figure 18 , the cylinder is in the extended position and the gripping axes (25, 26, 27, 28) are wedged into abutment at the bottom of each of their associated receiving part (31, 33, 34, 35). The tool (6) is held and cannot be released. In the event of failure of the locking cylinder (7), or if it is forced so as to extract the gripping pins (25, 26, 27, 28) from their receiving part (31, 33, 34, 35) , only the gripping axes (25, 26, 27, 28) located in the second receiving parts (32, 34) will be able to be extracted from the receiving assemblies (29, 30), while the other gripping axes (25, 26, 27, 28) will remain retained in the first receiving parts (31, 33) due to the presence of the gripping fingers (35, 36). The partially unlocked tool then tilts around these gripping axes (25, 26, 27, 28) but does not completely detach from the tool holder (1) and cannot fall, which is particularly safe.

Afin d'éviter le rapprochement accidentel des axes de préhension (25, 26, 27, 28), le vérin de verrouillage (7) est préférentiellement équipé d'un clapet anti-retour qui bloque le fluide dans la grande chambre lorsque le vérin de verrouillage (7) est soumis à des efforts externes, par exemple induits par le creusement. Ce clapet anti-retour est préférentiellement placé dans la tige (10) au plus près de la chambre à protéger, pour s'affranchir des fuites possibles entre la chambre et le clapet, si ce dernier était déporté et relié à la chambre par des flexibles ou analogues.In order to avoid the accidental rapprochement of the gripping axes (25, 26, 27, 28), the locking cylinder (7) is preferably equipped with a non-return valve which blocks the fluid in the large chamber when the cylinder locking (7) is subjected to external forces, for example induced by digging. This non-return valve is preferably placed in the rod (10) as close as possible to the chamber to be protected, to avoid possible leaks between the chamber and the valve, if the latter were offset and connected to the chamber by flexible hoses. or the like.

Selon un mode de réalisation préféré de l'invention, la position sortie de verrouillage du vérin de verrouillage (7) ne correspond pas à la fin de course de celui-ci, ce qui permet de continuer à utiliser le même vérin de verrouillage (7) pour le porte-outil (1) en cas de jeu provenant par exemple d'un problème d'usure ou de déformation des pièces. Ainsi, si la position sortie de verrouillage du vérin de verrouillage (7) nécessite une course supérieure à celle précédemment nécessaire pour le verrouillage, une course supérieure est disponible pour le vérin de verrouillage (7). Selon ce mode de réalisation de l'invention, en raison de la sur-course qu'il présente, le vérin de verrouillage (7) comprend alors un moyen de détection de la position de la tige (10) de sorte de s'assurer du bon verrouillage de l'outil (6) par le porte-outil (1).According to a preferred embodiment of the invention, the extended locking position of the locking cylinder (7) does not correspond to the end of stroke of this, which makes it possible to continue to use the same locking cylinder (7) for the tool holder (1) in the event of play originating for example from a problem of wear or deformation of the parts. Thus, if the extended locking position of the locking cylinder (7) requires a stroke greater than that previously necessary for locking, a greater stroke is available for the locking cylinder (7). According to this embodiment of the invention, due to the over-travel that it presents, the locking cylinder (7) then comprises a means for detecting the position of the rod (10) so as to ensure proper locking of the tool (6) by the tool holder (1).

Il est évident que la présente description ne se limite pas aux exemples explicitement décrits, mais comprend également d'autres modes de réalisation et/ou de mise en oeuvre. Ainsi, une caractéristique technique décrite peut être remplacée par une caractéristique technique équivalente sans sortir du cadre de la présente invention tel que défini par les revendications.It is obvious that the present description is not limited to the examples explicitly described, but also includes other embodiments and/or implementations. Thus, a described technical characteristic can be replaced by an equivalent technical characteristic without departing from the scope of the present invention as defined by the claims.

Ainsi, l'invention tel que défini par les revendications peut être adaptée à tout type d'outil, et les outils peuvent comporter plusieurs ensembles de réception (29, 30) prévus par paires, par exemple sur leurs face avant et arrière afin de pouvoir librement les monter dans un sens ou dans l'autre sur le porte-outil (1). A titre d'exemple, un godet de transport permettant de transporter plusieurs outils avec celui monté sur la machine pour les déplacements sur les chantiers est représenté sur la figure 20, comportant plusieurs ensembles de réception (29, 30) prévus par paires.Thus, the invention as defined by the claims can be adapted to any type of tool, and the tools can comprise several receiving assemblies (29, 30) provided in pairs, for example on their front and rear faces in order to be able to freely mount them in one direction or the other on the tool holder (1). As an example, a transport bucket allowing several tools to be transported with the one mounted on the machine for traveling on construction sites is shown on the Figure 20 , comprising several receiving assemblies (29, 30) provided in pairs.

Claims (8)

  1. Assembly formed by a tool (6) and a tool holder (1) intended to allow the quick and reversible assembly of a tool (6) on the free end of the working arm (2) of the worksite or construction machine, where the working arm (2) comprises a stick (3) that ends in a fork (4) and is equipped with a link and cylinder assembly (5) intended to manipulate the tool (6) when it is mounted on the free end thereof, wherein:
    · the tool holder (1) comprises a locking cylinder (7) comprising a fixed part rotatably mounted (8) on the free end of the stick (3) and a moving part (9) connected to the fixed part (8) by a rod (10) and mounted pivoting on the end of the link and cylinder assembly (5);
    · the tool holder (1) comprises two first gripping pins (25, 26) extending laterally from each side of the fixed part (8) and two second gripping pins (27, 28) extending laterally from each side of the moving part (9) of the locking cylinder (7);
    · the tool (6) comprises at least two receiving assemblies (29, 30) suited to engage with the gripping pins (25, 26, 27, 28) of the tool holder (1);
    · each receiving assembly (29, 30) comprises two gripping fingers (35, 36) forming a first receiving part (31, 33) and a second receiving part (32, 34) for which the openings are facing and each intended to receive one of the first gripping pins (25, 26) and one of the second gripping pins (27, 28) in order to keep the tool (6) on the tool holder (1);
    · the tool (6) is suited to be locked and unlocked on the tool holder (1) by means of the locking cylinder (7) by reversibly changing the distance between the moving part (9) and the fixed part (8) thereof, between an extended position of the locking cylinder (7) in which each of the first gripping pins (25, 26) is moved into abutment at the bottom of the associated receiving portion (31, 33 or 32, 34) thereof and each of the second gripping pins (27, 28) is moved into abutment at the bottom of the associated receiving portion (32, 34 or 31, 33) thereof, and a retracted position of the locking cylinder (7) in which the gripping pins can be extracted from the receiving assemblies (29, 30);
    characterized in that the shape of the gripping fingers (35, 36) is adapted such that the tool (6) does not unhook from the first gripping pins (25, 26) in case of large amplitude swinging movement when the tool is being mounted and that the first receiving parts (31, 33) each have a gripping finger (35, 36) partially covering the opening thereof, whereas the second receiving parts (32, 34) do not, so that the mounting of the tool (6) includes the following steps, wherein :
    - the operator moves the working arm (2) so as to bring the tool holder (1) near the receiving assemblies (29, 30) and to insert the first gripping pins (25, 26) into the first receiving parts (31, 33) under the gripping fingers (35, 36);
    - the operator raises the working arm (2) so as to lift the tool (6) near the first receiving parts (31, 33) by the first gripping pins (25, 26), that done, under the weight of the tool (6), the first gripping pins (25, 26) come to lodge in the bottom of the first receiving parts (31, 33) and the tool (6) centers itself on the tool holder (1);
    - the locking cylinder (7) is then retracted, so as to bring the first gripping pins (25, 26) the closest to the second gripping pins (27, 28);
    - the operator then actuates the link and cylinder assembly (5) of the work arm (2) so as to insert the second gripping pins (27, 28) into the receiving assemblies (29, 30) so as to bring the second gripping pins (27, 28) to a stop in the bottom of the receiving assemblies (29, 30) and to exert a thrust there which causes the tool (6) to swing around the first gripping pins (25, 26);
    - the locking cylinder (7) is then extended, so as to separate the first gripping pins (25, 26) from the second gripping pins (27, 28).
  2. Assembly formed of a tool (6) and a tool holder (1) according to claim 1, characterized in that the receiving parts (31, 32, 33, 34) are shaped like hooks or semicircular notch whose inner diameter is slightly greater than the outer diameter of the gripping pins (25, 26, 27, 28) that they receive.
  3. Assembly formed of a tool (6) and a tool holder (1) according to any one of the preceding claims, characterized in that the fixed part (8) of the locking cylinder (7) comprises a mounting pin (13, 14) on each of the lateral sides (11, 12) thereof which is held on the fork (4) by a chamfered retaining ring (17, 18).
  4. Assembly formed of a tool (6) and a tool holder (1) according to any one of the preceding claims, characterized in that the moving part (9) of the locking cylinder (7) comprises a mounting pin (21, 22) on each of the lateral sides (19, 20) thereof which is held near the end of the link and cylinder assembly (5) by a chamfered retaining ring (23, 24).
  5. Assembly formed of a tool (6) and a tool holder (1) according to any one of the preceding claims, characterized in that, the locking cylinder (7) is equipped with an anti-return valve which secures the fluid in the large chamber when the locking cylinder (7) is subject to external forces.
  6. Assembly formed of a tool (6) and a tool holder (1) according to the preceding claim, characterized in that, the anti-return valve is placed in the rod (10) closest to the chamber to be protected.
  7. Assembly formed of a tool (6) and a tool holder (1) according to any one of the preceding claims, characterized in that the locking cylinder (7) has an intended over-range such that the locking extended position of the locking cylinder (7) does not correspond to the end of range thereof.
  8. Assembly formed of a tool (6) and a tool holder (1) according to any one of the preceding claims, characterized in that the locking cylinder (7) is equipped with a means of detection of the position of the rod (10) so as to provide good locking of the tool (6) by the tool holder (1).
EP15188105.9A 2014-10-13 2015-10-02 Tool holder for a construction or public works vehicle Active EP3009570B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1459818A FR3027037B1 (en) 2014-10-13 2014-10-13 TOOL HOLDER FOR CONSTRUCTION OR PUBLIC WORKS EQUIPMENT

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EP3009570A1 EP3009570A1 (en) 2016-04-20
EP3009570C0 EP3009570C0 (en) 2024-04-17
EP3009570B1 true EP3009570B1 (en) 2024-04-17

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EP (1) EP3009570B1 (en)
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Also Published As

Publication number Publication date
EP3009570C0 (en) 2024-04-17
WO2016059328A1 (en) 2016-04-21
FR3027037A1 (en) 2016-04-15
EP3009570A1 (en) 2016-04-20
US20170275847A1 (en) 2017-09-28
US10815635B2 (en) 2020-10-27
FR3027037B1 (en) 2018-01-26

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