FR2494747A1 - Dredging arm attachment for earthworking machine - comprises ram=actuated telescopic arm pivotally attached to existing jointed arm - Google Patents

Dredging arm attachment for earthworking machine - comprises ram=actuated telescopic arm pivotally attached to existing jointed arm Download PDF

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Publication number
FR2494747A1
FR2494747A1 FR8024859A FR8024859A FR2494747A1 FR 2494747 A1 FR2494747 A1 FR 2494747A1 FR 8024859 A FR8024859 A FR 8024859A FR 8024859 A FR8024859 A FR 8024859A FR 2494747 A1 FR2494747 A1 FR 2494747A1
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Prior art keywords
arm
accessory according
operating
connection
accessory
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Granted
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FR8024859A
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French (fr)
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FR2494747B1 (en
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Priority to FR8024859A priority Critical patent/FR2494747A1/en
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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F3/00Dredgers; Soil-shifting machines
    • E02F3/04Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28Dredgers; 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
    • E02F3/36Component parts
    • E02F3/38Cantilever beams, i.e. booms;, e.g. manufacturing processes, forms, geometry or materials used for booms; Dipper-arms, e.g. manufacturing processes, forms, geometry or materials used for dipper-arms; Bucket-arms
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F3/00Dredgers; Soil-shifting machines
    • E02F3/04Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28Dredgers; 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
    • E02F3/30Dredgers; 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
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F3/00Dredgers; Soil-shifting machines
    • E02F3/04Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28Dredgers; 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
    • E02F3/30Dredgers; 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
    • E02F3/32Dredgers; 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
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F3/00Dredgers; Soil-shifting machines
    • E02F3/04Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/96Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
    • E02F3/963Arrangements on backhoes for alternate use of different tools
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F5/00Dredgers or soil-shifting machines for special purposes
    • E02F5/006Dredgers or soil-shifting machines for special purposes adapted for working ground under water not otherwise provided for
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F5/00Dredgers or soil-shifting machines for special purposes
    • E02F5/28Dredgers or soil-shifting machines for special purposes for cleaning watercourses or other ways
    • E02F5/285Dredgers or soil-shifting machines for special purposes for cleaning watercourses or other ways with drag buckets or scraper plates

Abstract

The accessory for an earthworking machine for dredging ditches or streams comprises an arm (22) extending from an adaptor (21) and carrying a cleaning tool (24) on its free end. The adaptor is pivotally attached at one point (25) to the existing jointed arm (13) and pivoted at a second point (26) to an actuating ram (18). The arm (22) is made up of two tubular parts, one of which can slide telescopically within the other. The two tubular parts are actuated by a ram mounted axially inside the tubular parts.

Description

L'invention concerne un accessoire pour un engin de terrassement ou analogue, dans le but de lui faire effectuer des opérations particulierres et notamment le nettoyage des fossés et ruisseaux sous les ponts routiers ou de chemin de fer. The invention relates to an accessory for an earthmoving machine or the like, with the aim of making it perform particular operations and in particular the cleaning of ditches and streams under road or railway bridges.

Le nettoyage d'un fossé ou d'un petit ruisseau dans un endroit aussi peu accessible que sous un pont pose certains problemes. S'il est effectué manuellement, il nécessite une main d'oeuvre importante. Par ailleurs, on ne dispose pas d'engins de terrassement réellement efficaces pour un tel travail et il paraît économiquement peu réaliste de concevoir un engin spécialisé et entièrement destiné une application aussi spécifique. L'idée de base de l'invention consiste donc a concevoir un outillage spécialisé pour une telle fonction et adaptable sur un engin de terrassement classique, notamment une pelle mécanique, largement répandue dans les services des Ponts-et-Chaussées. Cleaning a ditch or small stream in a location as inaccessible as under a bridge poses certain problems. If done manually, it requires significant labor. In addition, there is no really efficient earthmoving machine for such work and it seems economically unrealistic to design a specialized machine entirely intended for such a specific application. The basic idea of the invention therefore consists in designing specialized tools for such a function and adaptable to a conventional earthmoving machine, in particular a mechanical shovel, widely used in the Ponts-et-Chaussées departments.

Dans cet esprit, l'invention concerne principalement un acces so ire pour engin de terrassement ou analogue, cet engin comportant un bras de manoeuvre articulé et un vérin de manoeuvre monté au voisinage de l'extrémité de ce bras, caractérisé en ce qu'il se compose principalement d'une pièce de raccordement, d'un bras prolongeant ladite pièce de raccordement et d'un outil de nettoyage monté b l'extrémité libre dudit bras, ladite pièce de raccordement comportant un premier moyen d'articulation pour la liaison audit bras de manoeuvre, et un second moyen d'articulation pour la liaison audit vérin de manoeuvre. In this spirit, the invention relates mainly to a so ire access for earthmoving machine or the like, this machine comprising an articulated operating arm and an operating cylinder mounted in the vicinity of the end of this arm, characterized in that it mainly consists of a connecting piece, an arm extending said connecting piece and a cleaning tool mounted at the free end of said arm, said connecting piece comprising a first articulation means for connection to said operating arm, and a second articulation means for connection to said operating cylinder.

Selon un mode de réalisation préféré, l'accessoire défini cidessus est également caractérisé en ce que son bras a une structure télescopique, en au moins deux parties tubulaires mobiles axialement l'une par rapport à l'autre, et qu'un vérin est connecte entre ces deux parties pour commander l'élongation du bras à structure télescopique. According to a preferred embodiment, the accessory defined above is also characterized in that its arm has a telescopic structure, in at least two tubular parts movable axially relative to one another, and that a jack is connected between these two parts to control the elongation of the telescopic arm.

Enfin, le positionnement du bras de l'accessoire par rapport au bras de manoeuvre de l'engin de terrassement utilisé peut être effectué de deux façons différentes pour permettre le nettoyage sous l'engin de terrassement lorsque celui-ci est installé sur le pont, ou au contraire, vers l'avant de celui-ci lorsque l'engin travaille au bord du ruisseau lui-même.  Finally, the positioning of the arm of the accessory relative to the operating arm of the earthmoving machine used can be carried out in two different ways to allow cleaning under the earthmoving machine when it is installed on the deck, or on the contrary, towards the front of it when the machine is working on the edge of the stream itself.

L'invention sera mieux comprise et d'autres avantages de celleci apparaîtront mieux à la lumière de la description qui va suivre d'un mode de réalisation actuellement préféré d'un accessoire conforme à l'invention, donnée uniquement à titre d'exemple et faite en référence aux dessins annexés, dans lesquels
- la figure 1 illustre un engin de travaux publics modifié pour être équipé de l'accessoire conforme à 3'invention, dans l'une des positions de travail possibles, c'est-à-dire l'engin de terrassement installé sur un pont pour le nettoyage d'un ruisseau sous ce pont;
- la figure 2 est une vue de détail éclatée de l'accessoire conforme à l'invention; et
- la figure 3 illustre l'autre position de travail possible de engin de terrassement équipé de l'accessoire selon l'invention.
The invention will be better understood and other advantages of this will appear more clearly in the light of the description which follows of a currently preferred embodiment of an accessory in accordance with the invention, given solely by way of example and made with reference to the accompanying drawings, in which
- Figure 1 illustrates a public works machine modified to be equipped with the accessory according to 3'invention, in one of the possible working positions, that is to say the earthmoving machine installed on a bridge for cleaning a stream under this bridge;
- Figure 2 is an exploded detail view of the accessory according to the invention; and
- Figure 3 illustrates the other possible working position of earthmoving machine equipped with the accessory according to the invention.

En se référant plus particulièrement à la figure 1, on a repré senté un engin du type "pelle mécanique" 11, classique, installé en position de travail sur un pont 12 enjambant un ruisseau, le but de 1 'opé- ration étant de nettoyer ledit ruisseau dans la partie peu accessible située sous le pont 12. Le bras de manoeuvre 13 de l'engin 11 se compose principalement de deux parties articulées l'une à l'autre : la flèche 14 et le balancier 15. Ces deux parties sont manoeuvrées par des vérins 16 et 17. Un autre vérin 18 qui sera dénommé ci-après "vérin de manoeuvre" est monté au voisinage de l'extrémité du bras de manoeuvre 13. Referring more particularly to Figure 1, there is shown a machine of the type "mechanical shovel" 11, conventional, installed in the working position on a bridge 12 spanning a stream, the purpose of one operation being to clean said stream in the inaccessible part located under the bridge 12. The operating arm 13 of the machine 11 mainly consists of two parts hinged to one another: the arrow 14 and the pendulum 15. These two parts are operated by jacks 16 and 17. Another jack 18 which will be referred to hereinafter as "operating jack" is mounted in the vicinity of the end of the operating arm 13.

Ce vérin 18 est normalement destiné pour agir, par l'intermédiaire de deux biellettes articulées 19 et 20 sur un godet de pelle (non représenté) qui a été démonté pour l'application envisagée. Tous les éléments de structure qui ont été énoncés jusqu'à présent appartiennent d'origine à la pelle mécanique utilisable dans le cadre de l'invention.This cylinder 18 is normally intended to act, by means of two articulated links 19 and 20 on a shovel bucket (not shown) which has been dismantled for the envisaged application. All the structural elements which have been stated up to now belong to the mechanical shovel which can be used in the context of the invention.

Selon l'invention, on remplace le godet de pelle par l'accessoire qui est représenté aux figures 1 et 2. cet accessoire se compose principalement d'une pièce de raccordement 21, d'un bras 22 fixé par une extrémité 23 à la pièce de raccordement 21 et d'un outil de nettoyage 24 montéàl'autre extrémité du bras 22. D'autre part, la pièce de raccordement est complétée par un premier moyen d'articulation (un axe 25 démontable, par exemple) pour la liaison au bras de manoeuvre 13 et par un second moyen d'articulation (un axe 26 démontable, par exemple) pour la liaison au vérin de manoeuvre 18. Dans l'exemple de la figure, la liaison entre l'axe 26 et le vérin 18 s'effectue par l'intermédiaire des deux biellettes 19 et 20 précitées.En outre, comme on le voit sur la figure 2, le bras 22 a une structure télescopique. il est composé de deux parties tubulaires à section carrée, 27 et 28, mobiles axialement l'une par rapport à l'autre. Un vérin 29 est connecté entre ces deux parties pour commander l'élongation du bras 22 à structure télescopique. According to the invention, the shovel bucket is replaced by the accessory which is shown in FIGS. 1 and 2. this accessory mainly consists of a connection piece 21, of an arm 22 fixed by one end 23 to the piece connection 21 and a cleaning tool 24 mounted at the other end of the arm 22. On the other hand, the connection piece is completed by a first articulation means (a removable pin 25, for example) for connection to the operating arm 13 and by a second articulation means (a removable pin 26, for example) for the connection to the operating cylinder 18. In the example of the figure, the connection between the axis 26 and the cylinder 18 s 'performs through the two links 19 and 20 above. In addition, as seen in Figure 2, the arm 22 has a telescopic structure. it is composed of two tubular parts with square section, 27 and 28, movable axially with respect to each other. A jack 29 is connected between these two parts to control the elongation of the arm 22 with a telescopic structure.

Ce vérin 29 est monté axialement à l'intérieur des parties tubulaires 27 et 28. La pièce de raccordement 21 comporte quant à elle deux joues latérales parallèles, 30, 31, définissant une sorte de chape et les axes d'articulation 25 et 26 précités sont montés parallèlement entre les joues 30 et 31. Ces dernières s' étendent de part et d'autre d'une portion tubulaire 32, ouverte à ses deux extrémités axiales.La forme et les dimensions de cette portion tubulaire correspondent à celles de l'extrémité 23 du bras 22, pour pouvoir la recevoir dans deux positions de montage possible, c'est-à-dire d'une part une position représentée sur les figures 1 et 2 dans laquelle le bras 22 est monté dans le prolongement de l'extrémité 33a de la portion tubulaire 32 et, d'autre part, une autre position représentée à la figure 3, dans laquelle le bras 22 est monté dans le prolongement de l'extrémité 33b de cette même portion tubulaire. Des moyens de blocage, non représentés, permettent d'immobiliser le bras 22 dans la portion tubulaire 32, dans l'une ou l'autre de ces positions.This cylinder 29 is mounted axially inside the tubular parts 27 and 28. The connecting piece 21 comprises two parallel lateral cheeks, 30, 31, defining a kind of yoke and the articulation axes 25 and 26 mentioned above are mounted in parallel between the cheeks 30 and 31. The latter extend on either side of a tubular portion 32, open at its two axial ends. The shape and dimensions of this tubular portion correspond to those of the end 23 of the arm 22, in order to be able to receive it in two possible mounting positions, that is to say on the one hand a position shown in FIGS. 1 and 2 in which the arm 22 is mounted in the extension of the end 33a of the tubular portion 32 and, on the other hand, another position shown in FIG. 3, in which the arm 22 is mounted in the extension of the end 33b of this same tubular portion. Locking means, not shown, make it possible to immobilize the arm 22 in the tubular portion 32, in one or other of these positions.

il est à noter que les axes d'articulation 25 et 26 sont identiques et positionnés symétriquement par rapport à la géométrie de la pièce de raccordement 21 pour que chacun puisse être indifféremment relié au vérin de manoeuvre 18 ou au bras de manoeuvre 13, ce qui permet encore deux positions de montage possibles du bras 22 par rapport au bras de manoeuvre 13, mais cette fois dans désolidariser la piece de raccordement 21 du bras de manoeuvre 22. Autrement dit, pour passer d'une position de travail à l'autre, on a le choix entre inverser la position de l'ensemble de l'accessoire par rapport à l'engin 11 (puisque les axes 25 et 26 sont interchangeables), ou bien changer la position du bras 22 par rapport à la pièce de raccordement 21. it should be noted that the articulation axes 25 and 26 are identical and positioned symmetrically with respect to the geometry of the connecting piece 21 so that each can be interconnected either to the operating cylinder 18 or to the operating arm 13, which still allows two possible mounting positions of the arm 22 relative to the operating arm 13, but this time in separating the connecting piece 21 from the operating arm 22. In other words, to pass from one working position to the other, there is a choice between reversing the position of the whole of the accessory relative to the machine 11 (since the axes 25 and 26 are interchangeable), or else changing the position of the arm 22 relative to the connecting piece 21 .

L'outil de nettoyage 24 est, dans l'exemple représenté, un organe racleur claveté par un axe 35 à l'extrémité de la partie 28 du bras 22. Il pourrait s'agit de n'importe quel type d'outil connu, choisi en fonction de la dureté du sol. The cleaning tool 24 is, in the example shown, a scraper member keyed by a pin 35 at the end of the part 28 of the arm 22. It could be any type of known tool, chosen according to the hardness of the soil.

Le fonctionnement est le suivant. Si la partie à nettoyer se trouve au-dessousd'un pont routier (cas de la figure 1), l'engin de terrassement 11 peut prendre position sur le pont luimrne et, dans ce cas, le bras 22 de l'accessoire selon l'invention est monte de façon à être orienté dans la direction opposée à celle de la flèche 14 de l'engin 11. La manoeuvre consiste à commander les vérins 16, 17 et 18 pour introduire l'outil râcleur 24 sous le pont 12. Lorsque le bras 22 est sensiblement horizontal et face à l'arche du pont, on commande l'élonga- tion du vérin 29 pour obtenir la longueur maximum du bras 22.On abaisse alors légèrement le bras 22 jusqu 'a ce que l'outil 24 soit maintenu avec une légère pression au sol. il suffit alors d'effectuer les manoeuvres inverses de celles qui ont permis d'introduire l'outil 24 sous le pont, tout en maintenant une légère pression de cet outil sur le sol. The operation is as follows. If the part to be cleaned is located below a road bridge (case of FIG. 1), the earth-moving machine 11 can take position on the bridge and, in this case, the arm 22 of the accessory according to the he invention is mounted so as to be oriented in the opposite direction to that of the arrow 14 of the machine 11. The operation consists in controlling the jacks 16, 17 and 18 to introduce the scraper tool 24 under the bridge 12. When the arm 22 is substantially horizontal and facing the arch of the bridge, the elongation of the jack 29 is controlled to obtain the maximum length of the arm 22. The arm 22 is then slightly lowered until the tool 24 is maintained with a slight pressure on the ground. it then suffices to perform the reverse maneuvers of those which made it possible to introduce the tool 24 under the bridge, while maintaining a slight pressure of this tool on the ground.

Ceci a pour effet de retirer la boue accumulée sous le pont. Si le pont 12a est un pont de chemin de fer (fig. 3), l'engin 11 ne peut prendre position sur ce pont. En revanche, il peut la plupart du temps enjamber le ruisseau et prendre appui par chacune de ses chenilles sur les rives 36 et 37 du ruisseau. Dans ce cas, le bras 22 doit être orienté dans une autre direction, c'est-à-dire dans le prolongement de la flèche 14 et du balancier 15. On dispose alors d'une longueur de bras suffisante pour travailler sous le pont, la manoeuvre du vérin 29 évitant de déplacer engin 11 le long des rives 36 et 37, souvent peu stables. Si le ruisseau est trop large, on peut installer l'engin 11 le long d'une seule rive, en biais.This has the effect of removing the mud accumulated under the deck. If the bridge 12a is a railway bridge (fig. 3), the machine 11 cannot take position on this bridge. On the other hand, it can most of the time span the stream and be supported by each of its tracks on the banks 36 and 37 of the stream. In this case, the arm 22 must be oriented in another direction, that is to say in the extension of the arrow 14 and the pendulum 15. There is then sufficient arm length to work under the bridge, the actuation of the jack 29 avoiding moving the machine 11 along the banks 36 and 37, often not very stable. If the stream is too wide, the machine 11 can be installed along a single bank, at an angle.

il est à noter que l'outil de nettoyage mentionné ci-dessus peut prendre des formes très diverses suivant la nature du terrain et le travail demandé. En particulier, on peut utiliser, à la place de l'organe râcleur décrit, un outil en forme de dent unique, appelé "dent ripper" ou encore un outil en forme de flèche appelé "pointe flèche" que l'on peut enfoncer dans le terrain pour en détruire la cohésion. On notera aussi la possibilité d'utiliser une benne preneuse du type "bâti-long" utilisée généralement pour le forage des puits. Dans ce dernier cas, puisque la benne preneuse est normalement équipée d'un bras, celui-ci peut éventuellement être directement connecté à la piece de raccordement. it should be noted that the cleaning tool mentioned above can take very diverse forms depending on the nature of the ground and the work required. In particular, it is possible to use, in place of the scraper member described, a tool in the form of a single tooth, called a "tooth ripper" or even an arrow-shaped tool called a "arrow point" which can be inserted the ground to destroy its cohesion. Note also the possibility of using a clamshell of the "long-frame" type generally used for drilling wells. In the latter case, since the clamshell is normally equipped with an arm, this can optionally be directly connected to the connecting piece.

Bien entendu, l'invention n'est pas limitée au mode de réalisation de l'accessoire qui vient d'être décrit, mais elle comprend tous les équivalents techniques des moyens mis en jeu si ceux-ci le sont dans le cadre des revendications qui suivent.  Of course, the invention is not limited to the embodiment of the accessory which has just been described, but it includes all the technical equivalents of the means used if these are within the scope of the claims which follow.

Claims (9)

REVENDICATIONS 1. Accessoire pour engin de terrassement ou analogue, cet engin comportant un bras de manoeuvre articulé et un vérin de manoeuvre monté au voisinage de l'extrémité de ce bras de manoeuvre, caractérisé en ce qu'il se compose principalement d'une pièce de raccordement (21), d'un bras (22) prolongeant ladite pièce de raccordement et d'un outil de nettoyage (24) monté à l'extrémité libre dudit bras, ladite pièce de raccordement comportant un premier moyen d'articulation (25) pour la liaison audit bras de manoeuvre, et un second moyen d'articulation (26) pour la liaison audit vérin de manoeuvre. 1. Accessory for earthmoving machine or the like, this machine comprising an articulated operating arm and an operating cylinder mounted in the vicinity of the end of this operating arm, characterized in that it mainly consists of a piece of connection (21), an arm (22) extending said connection piece and a cleaning tool (24) mounted at the free end of said arm, said connection piece comprising a first articulation means (25) for connection to said operating arm, and a second articulation means (26) for connection to said operating cylinder. 2. Accessoire selon la revendication 1, caractérisé en ce que ledit bras (22) a une structure télescopique en au moins deux parties tubulaires (27, 28), mobiles axialement l'une par rapport à l'autre. 2. Accessory according to claim 1, characterized in that said arm (22) has a telescopic structure in at least two tubular parts (27, 28), axially movable relative to one another. 3. Accessoire selon la revendication 2, caractérisé en ce que vérin (29) est connecté entre ces deux parties pour commander l'élonga- tion dudit bras à structure télescopique. 3. Accessory according to claim 2, characterized in that jack (29) is connected between these two parts to control the elongation of said arm with telescopic structure. 4. Accessoire selon la revendication 3, caractérisé en ce que ledit vérin (29) est monté axialement à l'intérieur desdites parties tubulaires. 4. Accessory according to claim 3, characterized in that said cylinder (29) is mounted axially inside said tubular parts. 5. Accessoire selon l'une des revendications précédentes, caractérisé en ce que ladite pièce de raccordement (21) comporte deux joues latérales (30, 31) définissant une chape et que lesdits premier et second moyens d'articulation sont constitués par des axes d'articulation parallèles s'étendant entre lesdites joues latérales. 5. Accessory according to one of the preceding claims, characterized in that said connecting piece (21) comprises two lateral cheeks (30, 31) defining a yoke and that said first and second articulation means are constituted by axes d 'parallel joint extending between said side cheeks. 6. Accessoire selon la revendication 5, caractérisé en ce que lesdits axes d'articulation (25, 26) sont sensiblement identiques, pour que chacun puisse être indifféremment relié au vérin de manoeuvre ou au bras de manoeuvre précités, de façon à définir deux positions de montage possibles dudit bras (22) par rapport audit bras de manoeuvre (13).  6. Accessory according to claim 5, characterized in that said articulation axes (25, 26) are substantially identical, so that each can be indifferently connected to the operating cylinder or to the above-mentioned operating arm, so as to define two positions possible mounting of said arm (22) relative to said operating arm (13). 7. Accessoire selon l'une des revendications précédentes, caractérisé en ce que ladite pièce de raccordement comporte une portion tubulaire (32), ouverte à ses deux extrémités, de forme et de dimensions correspondant à celles de ladite extrémité (23) dudit bras pour la recevoir dans deux positions de montage possibles. 7. Accessory according to one of the preceding claims, characterized in that said connecting piece comprises a tubular portion (32), open at its two ends, of shape and dimensions corresponding to those of said end (23) of said arm for receive it in two possible mounting positions. 8. Accessoire selon l'une des revendications précédentes, caractérisé en ce que ledit outil (24) est un organe râcleur.  8. Accessory according to one of the preceding claims, characterized in that said tool (24) is a scraper member. 9. Engin mobile du type comportant un bras de manoeuvre articulé, caractérisé en ce qu'il est équipe d'un accessoire selon l'une des revendications précédentes, monté à l'extrémité de son bras de manoeuvre.  9. Mobile vehicle of the type comprising an articulated operating arm, characterized in that it is fitted with an accessory according to one of the preceding claims, mounted at the end of its operating arm.
FR8024859A 1980-11-24 1980-11-24 Dredging arm attachment for earthworking machine - comprises ram=actuated telescopic arm pivotally attached to existing jointed arm Granted FR2494747A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8024859A FR2494747A1 (en) 1980-11-24 1980-11-24 Dredging arm attachment for earthworking machine - comprises ram=actuated telescopic arm pivotally attached to existing jointed arm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8024859A FR2494747A1 (en) 1980-11-24 1980-11-24 Dredging arm attachment for earthworking machine - comprises ram=actuated telescopic arm pivotally attached to existing jointed arm

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Publication Number Publication Date
FR2494747A1 true FR2494747A1 (en) 1982-05-28
FR2494747B1 FR2494747B1 (en) 1984-09-21

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FR8024859A Granted FR2494747A1 (en) 1980-11-24 1980-11-24 Dredging arm attachment for earthworking machine - comprises ram=actuated telescopic arm pivotally attached to existing jointed arm

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2530277A1 (en) * 1982-07-14 1984-01-20 Toyo Denki Kogyosho Co Ltd DREDGING APPARATUS
EP0599176A1 (en) * 1992-11-21 1994-06-01 Thomas Humme Implement for an Excavator
FR2727705A1 (en) * 1994-12-06 1996-06-07 Verlet Georges Device for clearing vegetation and silt from drainage ditches
EP0803615A2 (en) * 1996-04-24 1997-10-29 Esa Nuotio Device to be connected to the knuckle boom set of a working vehicle
DE19718861A1 (en) * 1996-04-30 1998-11-05 Weiss Gmbh & Co Leonhard Excavator

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2354420A1 (en) * 1976-06-08 1978-01-06 Liebherr Hydraulikbagger Mobile hydraulic excavator with articulated arm - has pivoted rotating cutter support for extending working range of excavator (NL 12.12.77)

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2354420A1 (en) * 1976-06-08 1978-01-06 Liebherr Hydraulikbagger Mobile hydraulic excavator with articulated arm - has pivoted rotating cutter support for extending working range of excavator (NL 12.12.77)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2530277A1 (en) * 1982-07-14 1984-01-20 Toyo Denki Kogyosho Co Ltd DREDGING APPARATUS
EP0599176A1 (en) * 1992-11-21 1994-06-01 Thomas Humme Implement for an Excavator
FR2727705A1 (en) * 1994-12-06 1996-06-07 Verlet Georges Device for clearing vegetation and silt from drainage ditches
EP0803615A2 (en) * 1996-04-24 1997-10-29 Esa Nuotio Device to be connected to the knuckle boom set of a working vehicle
EP0803615A3 (en) * 1996-04-24 1998-08-05 Esa Nuotio Device to be connected to the knuckle boom set of a working vehicle
DE19718861A1 (en) * 1996-04-30 1998-11-05 Weiss Gmbh & Co Leonhard Excavator
DE19718861C2 (en) * 1996-04-30 2000-06-08 Weiss Gmbh & Co Leonhard Excavators, in particular telescopic excavators

Also Published As

Publication number Publication date
FR2494747B1 (en) 1984-09-21

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