EP2636801A1 - Bucket for power shovel - Google Patents

Bucket for power shovel Download PDF

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Publication number
EP2636801A1
EP2636801A1 EP13158405.4A EP13158405A EP2636801A1 EP 2636801 A1 EP2636801 A1 EP 2636801A1 EP 13158405 A EP13158405 A EP 13158405A EP 2636801 A1 EP2636801 A1 EP 2636801A1
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EP
European Patent Office
Prior art keywords
edge
bucket
synthetic material
layer
wall
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Granted
Application number
EP13158405.4A
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German (de)
French (fr)
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EP2636801B1 (en
Inventor
Eric Romac
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EJ ROMAC
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EJ ROMAC
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Publication of EP2636801A1 publication Critical patent/EP2636801A1/en
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    • 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
    • E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
    • E02F3/401—Buckets or forks comprising, for example, shock absorbers, supports or load striking scrapers to prevent overload
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/003—Dredgers or soil-shifting machines for special purposes for uncovering conduits

Definitions

  • the invention relates to a bucket for a mechanical shovel, comprising a bottom terminated at one end by a cutting edge and extended laterally by two substantially vertical sides, the bottom and the sidewalls being made of a metallic material.
  • the invention finds an advantageous application in the field of public works and more particularly in the field of the repair of high risk active underground pipes, that is to say, buried pipes in which gas, oil, water, one or more active high or very high voltage electrical lines, a district heating fluid, etc ...
  • Repairing a buried pipe means digging at least locally the pipe, inspecting the condition of the pipe, and then necessary to repair it.
  • the slightest handling error can lead to serious incidents, or even an explosion that could lead to explosions within 800 m of the pipe.
  • a digger is used to dig up to 40 to 50 cm around the pipe to eliminate any risk of damage. These 40 or 50 cm of remaining soil are then removed by hand by trained personnel to the risks of intervention in such situations, which necessarily takes time and is very expensive.
  • the present invention has been able to respond to this difficulty, not solved by the documents of the state of the art.
  • the invention proposes a new bucket of excavator, to intervene with a mechanical shovel much closer to a high-risk pipe than the existing buckets.
  • the invention provides a bucket for a mechanical shovel, comprising a bottom terminated at one end by a cutting edge, and laterally extended by two substantially vertical flanks, having a junction edge with the bottom and a free edge, the bottom and the flanks being made of a metallic material;
  • the bucket according to the invention is characterized in that a layer of synthetic material is applied to an outer wall of the bottom at least in the vicinity of the cutting edge and an outer wall of the flanks, at least in the vicinity of the edge of junction with the bottom and the free edge, this layer of synthetic material extending, forming a projecting rim beyond the projecting edges of said cutting edge, the joining edge and the free edge.
  • the layer of synthetic material may extend from the projecting edges of the cutting edge, the joining edge and / or the free edges of the flanks, for example from 50 to 300 mm on the outer walls of the bottom of the bucket and the flanks of the bucket.
  • the layer of synthetic material may cover an entire surface of the outer walls of the bucket. Any risk of damaging a pipe is thus removed.
  • the layer of synthetic material can cover the teeth.
  • the material used to cover the ends or the walls of the bucket is a hard synthetic material, such as a resin, a resin loaded with fiber, hard polymer type such as polyethylene, polycarbonate or polyurethane.
  • a polymeric material such as polytetrafluoroethylene or an elastomer (rubber, etc.) may also be used, but is less resistant to wear, especially when working in hard floors.
  • the layer of synthetic material comprises plates of synthetic material fixed, for one, on the outer wall of the bottom in the vicinity of the cutting edge and, for the others, on the outer wall of the flanks in the vicinity of a free edge and a junction edge of the flanks.
  • the plates of synthetic material are for example fixed by rivets. They can also be fixed by screws or screw-nut systems, which facilitates their replacement after wear.
  • recesses are provided in the plates to allow insertion of the screw or rivet heads into the plates so that the screw or rivet heads can not come into contact with a pipe.
  • these plates are subdivided into several sections to allow the replacement of a worn section without having to replace the entirety of a plate.
  • similar protection means are associated with the fixing means overcoming the bucket.
  • the layer of synthetic material is overmolded on the cutting edge, so as to cover the cutting edge and the inner and outer walls of the bottom in the vicinity of the cutting edge, and / or the layer of synthetic material is overmolded on the free edge of the flanks so as to cover the inner and outer walls of the flanks in the vicinity of the free edges of the flanks.
  • the layer of synthetic material adheres perfectly to the walls of the bucket.
  • the layer of synthetic material can have a thickness of 5 to 50 mm, depending on the synthetic material chosen and the hardness of the floors to be worked.
  • the layer of material resists well enough and is not used prematurely.
  • the free edges of the flanks are of curvilinear shape of radius of curvature substantially proportional to the section of the pipe to be released.
  • the distance separating the plane perpendicular to the cutting edge of the bottom and the pivot axis of the bucket attachment means and / or the distance separating the plane corresponding to this cutting edge, always with respect to this axis of pivoting of the bucket attachment means is, respectively, are defined substantially proportional to the section of the pipe to be released.
  • the present invention relates to a bucket for excavator or the like.
  • This bucket 10 shown on Figures 1 and 2 , comprises a bottom 11 terminated at a first end 12 by a cutting edge 13 and laterally extended by two substantially vertical flanks 14, 15.
  • the bottom 11 and the flanks 14, 15 are made of a metal material for example a metal sheet thickness of 5 to 10mm. These flanks 14, 15 are for example welded, at their rear connecting edge 16 at the bottom 11.
  • a fixing means 18 of the bucket 10 is fixed, for example welded, a fixing means 18 of the bucket 10 to a shovel.
  • This means of fastener 18, generally in the form of hooks is of course a function of the excavator on which the bucket 10 is to be mounted.
  • fastening means 18 usually define a pivot axis 19 of the bucket 10 with respect to this excavator. This pivot axis 19 is substantially parallel to the cutting edge 13 of the bottom 11.
  • the bucket 10 according to the invention is characterized in that an outer wall 20 of the bottom 11 at least in the vicinity of the cutting edge 13 and an outer wall 21 of the flanks 14, 15, at least in the vicinity of the junction edge 16 with the bottom 11 and in the vicinity of the free edge 22, 23 of the sides 14, 15, are covered with a layer 24, 25, 26, 27 of a synthetic material.
  • free edge 22, 23 of a flank 14, 15 is meant, of course, the edge opposite the rear junction edge 16.
  • a layer of synthetic material 24 to 27 is defined in the form of a plate, preferably made of polyurethane.
  • This plate 24 to 27 has a thickness greater than 20 mm, preferably of the order of 30 mm.
  • Said layers 24 to 27 in the form of plates can be screwed by screw-nut systems 28 on the bottom 11 and the metal flanks 14, 15 of the cup 10.
  • Recesses, in the form of counterbore in the plates 24 to 27, allow a depressing the screw heads, preferably flat, so that they do not move on the surface of said plates 24 to 27.
  • stoppers 29 may be formed against which said plates 24 to 27 may immobilize them in position, especially in the working phase of the bucket 10.
  • a first plate 24 covers the outer wall 20 of the bottom 11 in the vicinity of the cutting edge 13.
  • a second plate 25 covers the outer wall 21 of the sidewall 14 in the vicinity of the free edge 22 of the latter.
  • a third plate 26 covers the outer wall 21 of the flank 15 in the vicinity of the free edge 23 of this latest.
  • a fourth plate 27 covers the outer wall 21 of the flank 14 in the vicinity of the junction edge 16.
  • a fifth plate (not visible in the figures) covers the outer wall 21 of the flank 15, again in the vicinity of the junction edge 16.
  • a plate defining a layer of synthetic material 24 to 27 extends from a protruding edge 30 to 33 of about 50 to 300 mm on the outer wall 20; 21 depending on the case of the bottom 11 or flanks 14, 15.
  • this layer of synthetic material 24 to 27 extends, forming a protruding flange 24A to 27A, beyond a projecting edge 30 to 33 of the cutting edge 12, the joining edge 16 and / or free edge 22, 23.
  • the synthetic material layer 25 to 27 overlaps the free edge 22, 23 and / or the joining edge 16 of the flanks 14, 15 over the entire length of these free edges. 22, 23 and / or junction 16
  • said layers of synthetic material 24 to 27 in the form of plates are subject to wear.
  • At least one plate 24 to 27 is subdivided into plate sections so as to allow partial replacement of the latter. This subdivision may be provided, as the case may be, parallel or perpendicular to a projecting edge 30 to 33 of the bucket 10.
  • the plate 24 coming to cover the cutting edge 13 of the bottom 11 may be subdivided into sections parallel to the projecting edge 30 of this cutting edge 13.
  • the plates 25, 26, 27, covering the free edge 22, 23 and the junction edge 16 of the flanks 14 and 15, can be subdivided into sections in a direction perpendicular to the projecting edges 30 to 33 defined by these edges 22, 23, 16.
  • similar protective means in the form of a layer of synthetic material 35, 36, are associated with the fastening means 18 over the bucket 10.
  • the fixing means 18 are generally in the form of hooks
  • the layer of synthetic material 35, 36 may, again, be in the form of a plate that overlaps tabs 37, 38 corresponding to such hooks 19 .
  • a bucket 10 according to the invention can be completely covered, at the level of the outer wall 20 of the bottom 11 and / or at the level of the outer wall 21 of the sidewalls 14, 15, by a layer of synthetic material, especially in the form of a plate.
  • the layer of synthetic material may be overmolded on the cutting edge 13 so as to cover the latter and the inner and outer walls 20 of the bottom 11 in the vicinity of the cutting edge 13 and / or the layer of material synthetic material can be overmolded on the free edge 22, 23 of a flank 14, 15 so as to cover the inner and outer walls 21 of this sidewall 14, 15 in the vicinity of said free edge 22, 23 and / or the layer of synthetic material may be overmolded on the rear junction edge 16 of a flank 14, 15 so as to cover the outer wall 21 of the sidewalls 14, 15 and the outer wall 20 of the bottom 11 in the vicinity of this free edge 16.
  • the free edges 22, 23 of the flanks 14, 15 are of curvilinear shape with a radius of curvature 39 substantially proportional to the section of the pipe to be released.
  • the distance 40 separating the plane 41 perpendicular to the edge 30 at the edge cutting edge 13 of the bottom 11 and the pivot axis 19 of the attachment means 18 of the bucket 10 and / or the distance 42 separating the plane 43 corresponding to this cutting edge 13 relative to this pivot axis 19 of the fastening means 18 of the bucket 10 is, respectively, are defined, substantially proportional to the section of the pipe to clear.
  • the distance 40 is preferably between 450mm and 570mm, preferably of the order of 520mm for a pipe diameter of between 80mm and 300mm and between 950mm and 12500mm, preferably of the order of 1100mm for a diameter. driving range between 650mm and 1200mm.
  • the distance 42 it is, preferably, between 600 mm and 800 mm, preferably of the order of 700 mm for a driving diameter of between 80 mm and 300 mm and between 1200 mm and 1800 mm, preferably of the order of 1500 mm for a pipe diameter of between 650mm and 1200mm.

Abstract

The bucket (10) has a bottom (11) terminated by a cutting edge (13) at an end and laterally prolonged by a vertical flank (15). The bottom has a rear junction edge (16) and a free edge (23). Synthetic material layers (24, 26, 27) are applied to an outer wall (20) of the bottom in vicinity of the cutting edge and on an outer wall (21) of the flank in vicinity of the junction edge and of the free edge. The layers are extended beyond protuberant ridges (30, 32, 33) of the cutting edge, the junction edge and the free edge by forming projecting edges (24A, 26A, 27A). The bottom and the flank are made of metallic material.

Description

L'invention concerne un godet pour pelle mécanique, comprenant un fond terminé à une extrémité par un bord tranchant et prolongé latéralement par deux flancs sensiblement verticaux, le fond et les flancs étant réalisés en un matériau métallique.The invention relates to a bucket for a mechanical shovel, comprising a bottom terminated at one end by a cutting edge and extended laterally by two substantially vertical sides, the bottom and the sidewalls being made of a metallic material.

L'invention trouve une application avantageuse dans le domaine des travaux publics et plus particulièrement dans le domaine de la réparation de conduites enterrées actives à haut risque, c'est-à-dire de conduites enterrées dans lesquelles circulent encore du gaz, du pétrole, de l'eau, une ou plusieurs lignes électriques haute ou très haute tension actives, un fluide de chauffage urbain, etc... Réparer une conduite enterrée suppose de déterrer au moins localement la conduite, inspecter l'état de la conduite, puis si nécessaire la réparer. Sur une conduite à haut risque, la moindre erreur de manipulation peut conduire à des incidents graves, voire une explosion susceptible de générer une déflagration jusque dans un rayon de 800 m autour de la conduite.The invention finds an advantageous application in the field of public works and more particularly in the field of the repair of high risk active underground pipes, that is to say, buried pipes in which gas, oil, water, one or more active high or very high voltage electrical lines, a district heating fluid, etc ... Repairing a buried pipe means digging at least locally the pipe, inspecting the condition of the pipe, and then necessary to repair it. On a high-risk pipe, the slightest handling error can lead to serious incidents, or even an explosion that could lead to explosions within 800 m of the pipe.

En outre, de telles conduites, souvent en acier, sont généralement soumises à une protection anticorrosion par courant et, de ce fait, sont enrobées d'une enveloppe isolante adaptée. Là encore, une altération de cette enveloppe isolante expose la conduite à un risque de corrosion susceptible d'engendrer à la longue des fuites, selon le cas polluantes ou générant un risque d'explosion. A noter, que cette enveloppe isolante ne constitue, en aucun cas, une protection de la conduite en cas d'erreur de manipulation de la pelle mécanique. En effet, la puissance de ces pelles et l'agressivité du godet a pour conséquence immédiate, en cas de contact avec une telle conduite, l'altération de cette enveloppe et de la conduite elle-même. A ce propos, c'est d'avantage l'éraflure que la déformation d'une telle conduite en acier dont la paroi peut être de l'ordre de 5 à 10 mm qui pose problème. En effet, une éraflure de 2 ou 4mm crée inévitablement une fragilité localisée au niveau de cette conduite avec les risques déjà évoqués.In addition, such pipes, often made of steel, are generally subjected to a corrosion protection by current and, therefore, are coated with a suitable insulating envelope. Again, an alteration of this insulating envelope exposes the conduct to a risk of corrosion likely to generate in the long run leaks, depending on the case polluting or generating a risk of explosion. Note that this insulating enclosure does not constitute, in any case, a protection of the pipe in the event of error in handling the excavator. Indeed, the power of these shovels and aggressiveness of the bucket has the immediate consequence, in case of contact with such conduct, the alteration of the envelope and the pipe itself. In this regard, it is more the scratch that the deformation of such a steel pipe whose wall may be of the order of 5 to 10 mm is problematic. Indeed, a scratch of 2 or 4mm inevitably creates a localized fragility in this conduct with the risks already mentioned.

Précisément, un problème rencontré lors de l'intervention sur de telles conduites est le fait que leur position sous terre n'est pas connue avec une très grande précision, au mieux une précision de l'ordre de 2 à 5 cm. Un deuxième problème rencontré est qu'il est très difficile de manipuler une pelle mécanique avec godet avec une grande précision, au mieux une précision de l'ordre de quelques centimètres.Precisely, a problem encountered during the intervention on such pipes is the fact that their position underground is not known with great precision, at best an accuracy of the order of 2 to 5 cm. A second problem encountered is that it is very difficult to handle a bucket with a high precision, at best a precision of the order of a few centimeters.

Actuellement, pour réparer une telle conduite à haut risque, on utilise une pelle mécanique pour creuser jusqu'au mieux 40 à 50 cm autour de la conduite pour supprimer tout risque d'endommagement. Ces 40 ou 50 cm de terre restant sont ensuite enlevés à la main par un personnel formé aux risques d'intervention dans de telles situations, ce qui nécessairement prend du temps et coûte très cher.Currently, to repair such a high-risk behavior, a digger is used to dig up to 40 to 50 cm around the pipe to eliminate any risk of damage. These 40 or 50 cm of remaining soil are then removed by hand by trained personnel to the risks of intervention in such situations, which necessarily takes time and is very expensive.

Il convient d'observer que l'on connait d'ores et déjà des solutions pour rendre le bord d'attaque du godet d'une pelle moins agressif. En particulier, on connait par le document JP-A-11229445 un godet pour pelle mécanique plus résilient pour éviter d'endommager les parois internes d'un container déchargé au moyen d'une telle pelle, comme cela a été illustré dans la figure 10 de ce document. Très concrètement, les coins formés par les flancs et le fond du godet sont habillés par des protections en caoutchouc ou autre matériau synthétique, de forme arrondie de manière à ne pas endommager en rayant lesdites parois du container. Tout au plus peut-on voir dans les figures 4 et 8 le prolongement de cette protection sur le bord tranchant du fond du godet.It should be noted that we already know solutions to make the leading edge of the bucket of a shovel less aggressive. In particular, we know from the document JP-A-11229445 a shovel bucket more resilient to avoid damaging the internal walls of a container discharged by such a shovel, as illustrated in Figure 10 of this document. Very concretely, the corners formed by the sidewalls and the bottom of the bucket are covered by protections of rubber or other synthetic material, of rounded shape so as not to damage by scratching said walls of the container. At most we can see in Figures 4 and 8 the extension of this protection on the cutting edge of the bottom of the bucket.

Il est évident que cette conception répond à un problème distinct par rapport à celui auquel se propose de répondre la présente invention. En effet, on veut éviter d'abimer, en éraflant, les parois internes d'un contenant essentiellement visibles. Hors, dans le cas de conduites enterrées, celles-ci ne sont pas visibles et il faut les dégager sur toute leur périphérie.It is obvious that this design answers a problem distinct from that which the present invention proposes to meet. Indeed, we want to avoid damaging, by scratching, the inner walls of a substantially visible container. Excluding, in the case of buried pipelines, these are not visible and must be cleared on their entire periphery.

Une solution à ce problème n'est pas évidente comme il ressort également du document US-A-2008/0134548 . En particulier, il est ici aussi recherché une solution pour ne pas abimer une conduite enterrée qu'il faut dégager. Dans un mode de réalisation, il s'agit de fixer, sous le fond du godet, un deuxième fond en forme de tunnel en un matériau plus ou moins souple, tout en étant suffisamment rigide pour pouvoir creuser la terre. Un tel deuxième fond n'aura qu'une durée de vie réduite. Il en va de même d'un godet construit en un tel matériau, notamment synthétique comme le préconise ce document dans un autre mode de réalisation. Ce document décrit encore un godet dont le fond est essentiellement conçu en un matériau résilient, toujours dans le but de venir se déformer au contact éventuel d'une conduite.A solution to this problem is not obvious, as is also apparent from the document US-2008/0134548 . In particular, it is here also sought a solution not to damage a buried pipe that must be cleared. In one embodiment, it is to fix, under the bottom of the bucket, a second tunnel-shaped bottom of a more or less flexible material, while being sufficiently rigid to be able to dig the earth. Such a second bottom will have a reduced life. It is the same for a bucket constructed of such a material, including synthetic as advocated in this document in another embodiment. This document also describes a bucket whose bottom is essentially designed in a resilient material, always in order to come deformed in the event of contact with a pipe.

Finalement, quelles que soient les solutions auxquelles font référence ces documents de l'état de la technique, elles ne répondent que partiellement au problème posé. En particulier, elles ne proposent pas une réponse au problème de dégager en sécurité une canalisation sur toute sa périphérie et, ainsi, limiter les interventions manuelles.Finally, whatever the solutions referred to these documents of the state of the art, they only partially meet the problem. In particular, they do not provide an answer to the problem of safely releasing a pipe over its entire periphery and, thus, limit manual intervention.

On a pu constater, dans le cadre d'une démarche inventive, que le risque de détérioration d'une conduite enterrée ne provenait pas exclusivement de la probabilité de toucher cette conduite avec la partie avant active et tranchante du godet, mais de l'ensemble quasiment de ses arêtes en périphérie. En effet, l'opérateur, aux commandes de la pelleteuse, est particulièrement attentif à l'évolution de cette partie active tranchante. Il la garde en permanence en vue. Et arrivé à une profondeur donnée, le repérage de la conduite à dégager se fait quasi systématiquement de manière manuelle. C'est une fois ce repérage effectué que l'opérateur va entreprendre, non seulement de dégager le dessus de la conduite, mais aussi sa périphérie, en passant sur les côté et le dessous de la conduite. Or, en gérant la partie avant de son godet il peut en oublier l'encombrement global et heurter cette conduite en la détériorant.It has been found, as part of an inventive step, that the risk of deterioration of a buried pipe does not arise exclusively from the probability of touching this pipe with the active and sharp front part of the bucket, but of the whole almost from its edges on the periphery. Indeed, the operator, at the controls of the excavator, is particularly attentive to the evolution of this cutting active part. He keeps it permanently in view. And arrived at a given depth, the identification of the pipe to clear is almost always manually. Once this is done, the operator will undertake, not only to clear the top of the pipe, but also its periphery, passing on the side and the bottom of the pipe. However, by managing the front part of his bucket he can forget the overall size and hit the pipe by damaging it.

La présente invention a su répondre à cette difficulté, non solutionnée par les documents de l'état de la technique.The present invention has been able to respond to this difficulty, not solved by the documents of the state of the art.

L'invention propose un nouveau godet de pelle, permettant d'intervenir avec une pelle mécanique bien plus près d'une conduite à haut risque que les godets existants. Pour cela, l'invention propose un godet pour pelle mécanique, comprenant un fond terminé à une extrémité par un bord tranchant, et prolongé latéralement par deux flancs sensiblement verticaux, comportant un bord de jonction avec le fond et un bord libre, le fond et les flancs étant réalisés en un matériau métallique ; le godet selon l'invention est caractérisé en ce qu'une couche de matériau synthétique est appliquée sur une paroi externe du fond au moins au voisinage du bord tranchant et une paroi externe des flancs, au moins au voisinage du bord de jonction avec le fond et du bord libre, cette couche de matériau synthétique venant s'étendre, en formant un rebord saillant au-delà des arêtes saillantes dudit bord tranchant, du bord de jonction et du bord libre.The invention proposes a new bucket of excavator, to intervene with a mechanical shovel much closer to a high-risk pipe than the existing buckets. For this, the invention provides a bucket for a mechanical shovel, comprising a bottom terminated at one end by a cutting edge, and laterally extended by two substantially vertical flanks, having a junction edge with the bottom and a free edge, the bottom and the flanks being made of a metallic material; the bucket according to the invention is characterized in that a layer of synthetic material is applied to an outer wall of the bottom at least in the vicinity of the cutting edge and an outer wall of the flanks, at least in the vicinity of the edge of junction with the bottom and the free edge, this layer of synthetic material extending, forming a projecting rim beyond the projecting edges of said cutting edge, the joining edge and the free edge.

Toutes les parties saillantes du godet susceptibles de venir en contact avec une conduite sont ainsi recouvertes d'un matériau synthétique. Le risque d'un contact métal-métal sur une conduite, voire le risque d'étincelle et d'explosion qui en découle sont ainsi fortement réduits. Egalement, un matériau synthétique étant moins dur que le métal, le risque de rayer la conduite et, donc, de fragiliser la conduite en diminuant localement son épaisseur sont ainsi limités.All the protruding parts of the bucket likely to come into contact with a pipe are thus covered with a synthetic material. The risk of a metal-to-metal contact on a pipe, or even the risk of spark and explosion resulting therefrom, is greatly reduced. Also, a synthetic material being less hard than the metal, the risk of scratching the pipe and, therefore, to weaken the pipe by locally reducing its thickness are thus limited.

La couche de matériau synthétique peut s'étendre à compter des arêtes saillantes du bord tranchant, du bord de jonction et/ou des bords libres des flancs, par exemple de 50 à 300 mm sur les parois externes du fond du godet et des flancs du godet.The layer of synthetic material may extend from the projecting edges of the cutting edge, the joining edge and / or the free edges of the flanks, for example from 50 to 300 mm on the outer walls of the bottom of the bucket and the flanks of the bucket.

Plus généralement, la couche de matériau synthétique peut recouvrir toute une surface des parois extérieures du godet. Tout risque d'endommager une conduite est ainsi supprimé.More generally, the layer of synthetic material may cover an entire surface of the outer walls of the bucket. Any risk of damaging a pipe is thus removed.

Egalement, si le bord tranchant est prolongé par des dents, la couche de matériau synthétique peut recouvrir les dents.Also, if the cutting edge is extended by teeth, the layer of synthetic material can cover the teeth.

De préférence, le matériau utilisé pour recouvrir les extrémités ou les parois du godet est un matériau synthétique dur, comme par exemple une résine, une résine chargée en fibre, de type polymère dur tel qu'un polyéthylène, un polycarbonate ou un polyuréthane. Un matériau polymère tel que du polytétrafluoroéthylène ou un élastomère (caoutchouc, etc.) peut également être utilisé, mais résiste moins bien à l'usure, notamment lors de travaux dans des sols durs.Preferably, the material used to cover the ends or the walls of the bucket is a hard synthetic material, such as a resin, a resin loaded with fiber, hard polymer type such as polyethylene, polycarbonate or polyurethane. A polymeric material such as polytetrafluoroethylene or an elastomer (rubber, etc.) may also be used, but is less resistant to wear, especially when working in hard floors.

Dans un exemple de réalisation, la couche de matériau synthétique comprend des plaques de matériau synthétique fixées, pour l'une, sur la paroi externe du fond au voisinage du bord tranchant et, pour les autres, sur la paroi externe des flancs au voisinage d'un bord libre et d'un bord de jonction des flancs. Les plaques de matériau synthétique sont par exemple fixées par rivets. Elles peuvent aussi être fixées par des vis ou des systèmes vis-écrou, ce qui facilite leur remplacement après usure. De préférence, des évidements sont prévus dans les plaques pour permettre un enfoncement des têtes de vis ou de rivets dans les plaques de sorte que les têtes de vis ou de rivets ne puissent venir en contact avec une conduite.In an exemplary embodiment, the layer of synthetic material comprises plates of synthetic material fixed, for one, on the outer wall of the bottom in the vicinity of the cutting edge and, for the others, on the outer wall of the flanks in the vicinity of a free edge and a junction edge of the flanks. The plates of synthetic material are for example fixed by rivets. They can also be fixed by screws or screw-nut systems, which facilitates their replacement after wear. Preferably, recesses are provided in the plates to allow insertion of the screw or rivet heads into the plates so that the screw or rivet heads can not come into contact with a pipe.

De manière préférentielle, ces plaques sont subdivisées en plusieurs tronçons pour permettre le remplacement d'un tronçon usé sans avoir à remplacer l'intégralité d'une plaque.Preferably, these plates are subdivided into several sections to allow the replacement of a worn section without having to replace the entirety of a plate.

Selon encore une autre particularité de l'invention, des moyens de protection similaire sont associés aux moyens de fixation surmontant le godet.According to yet another particularity of the invention, similar protection means are associated with the fixing means overcoming the bucket.

Dans un autre exemple de réalisation, la couche de matériau synthétique est surmoulée sur le bord tranchant, de sorte à recouvrir le bord tranchant et les parois interne et externe du fond au voisinage du bord tranchant, et/ou la couche de matériau synthétique est surmoulée sur le bord libre des flancs de sorte à recouvrir les parois interne et externe des flancs au voisinage des bords libres des flancs. Ainsi fixée, la couche de matériau synthétique adhère parfaitement aux parois du godet.In another embodiment, the layer of synthetic material is overmolded on the cutting edge, so as to cover the cutting edge and the inner and outer walls of the bottom in the vicinity of the cutting edge, and / or the layer of synthetic material is overmolded on the free edge of the flanks so as to cover the inner and outer walls of the flanks in the vicinity of the free edges of the flanks. Thus fixed, the layer of synthetic material adheres perfectly to the walls of the bucket.

La couche de matériau synthétique peut avoir une épaisseur de 5 à 50 mm, en fonction du matériau synthétique choisi et de la dureté des sols à travailler. La couche de matériau résiste ainsi assez bien et n'est pas usée prématurément.The layer of synthetic material can have a thickness of 5 to 50 mm, depending on the synthetic material chosen and the hardness of the floors to be worked. The layer of material resists well enough and is not used prematurely.

C'est de manière avantageuse, que l'on a pensé adapter la forme d'un godet, par ailleurs protégé, à celle d'une conduite, ceci pour permettre de dégager celle-ci de manière sûre, sur sa périphérie.Advantageously, it has been thought to adapt the shape of a cup, otherwise protected, to that of a pipe, this to allow to release it safely on its periphery.

Ainsi, selon encore une autre particularité de l'invention, les bords libres des flancs sont de forme curviligne de rayon de courbure sensiblement proportionnel à la section de la conduite à dégager.Thus, according to yet another feature of the invention, the free edges of the flanks are of curvilinear shape of radius of curvature substantially proportional to the section of the pipe to be released.

En outre de manière préférentielle, la distance séparant le plan perpendiculaire au bord tranchant du fond et l'axe de pivotement des moyens de fixation du godet et/ou la distance séparant le plan correspondant à ce bord tranchant, toujours par rapport à cet axe de pivotement des moyens de fixation du godet est, respectivement, sont définies sensiblement proportionnelles à la section de la conduite à dégager.Also preferably, the distance separating the plane perpendicular to the cutting edge of the bottom and the pivot axis of the bucket attachment means and / or the distance separating the plane corresponding to this cutting edge, always with respect to this axis of pivoting of the bucket attachment means is, respectively, are defined substantially proportional to the section of the pipe to be released.

D'autres buts et avantages de la présente invention apparaîtront au cours de la description qui va suivre se rapportant à un exemple de réalisation.Other objects and advantages of the present invention will become apparent from the following description relating to an exemplary embodiment.

La compréhension de cette description sera facilitée en se référant aux dessins ci-joints dans lesquels :

  • la figure 1 est une représentation schématisée, en élévation et de devant d'un godet selon l'invention ;
  • la figure 2 est une représentation schématisée en élévation et de côté de ce godet.
The understanding of this description will be facilitated by reference to the accompanying drawings in which:
  • the figure 1 is a schematic representation, in elevation and front of a bucket according to the invention;
  • the figure 2 is a schematic representation in elevation and side of this bucket.

La présente invention concerne un godet pour pelle mécanique ou similaire.The present invention relates to a bucket for excavator or the like.

Ce godet 10, représenté sur les figures 1 et 2, comprend un fond 11 terminé à une première extrémité 12 par un bord tranchant 13 et prolongé latéralement par deux flancs 14, 15 sensiblement verticaux. Le fond 11 et les flancs 14, 15 sont réalisés en un matériau métallique par exemple une tôle métallique d'épaisseur 5 à 10mm. Ces flancs 14, 15 sont par exemple soudés, à hauteur de leur bord de jonction arrière 16 au fond 11. A une deuxième extrémité 17 du fond 11, opposé à la première extrémité 12, est fixé, par exemple soudé, un moyen de fixation 18 du godet 10 à une pelle mécanique. Ce moyen de fixation 18, généralement sous forme de crochets, est bien entendu fonction de la pelle mécanique sur laquelle doit être monté le godet 10. Toutefois, de tels moyens de fixation 18 définissent, habituellement, un axe de pivotement 19 du godet 10 par rapport à cette pelle mécanique. Cet axe de pivotement 19 est sensiblement parallèle au bord tranchant 13 du fond 11.This bucket 10, shown on Figures 1 and 2 , comprises a bottom 11 terminated at a first end 12 by a cutting edge 13 and laterally extended by two substantially vertical flanks 14, 15. The bottom 11 and the flanks 14, 15 are made of a metal material for example a metal sheet thickness of 5 to 10mm. These flanks 14, 15 are for example welded, at their rear connecting edge 16 at the bottom 11. At a second end 17 of the bottom 11, opposite the first end 12, is fixed, for example welded, a fixing means 18 of the bucket 10 to a shovel. This means of fastener 18, generally in the form of hooks, is of course a function of the excavator on which the bucket 10 is to be mounted. However, such fastening means 18 usually define a pivot axis 19 of the bucket 10 with respect to this excavator. This pivot axis 19 is substantially parallel to the cutting edge 13 of the bottom 11.

Le godet 10 selon l'invention est caractérisé en ce qu'une paroi externe 20 du fond 11 au moins au voisinage du bord tranchant 13 et une paroi externe 21 des flancs 14, 15, au moins au voisinage du bord de jonction 16 avec le fond 11 et au voisinage du bord libre 22, 23 des flancs 14, 15, sont recouvertes d'une couche 24, 25, 26, 27, d'un matériau synthétique. Par bord libre 22, 23 d'un flanc 14, 15, on entend, bien sûr, le bord opposé au bord de jonction arrière 16.The bucket 10 according to the invention is characterized in that an outer wall 20 of the bottom 11 at least in the vicinity of the cutting edge 13 and an outer wall 21 of the flanks 14, 15, at least in the vicinity of the junction edge 16 with the bottom 11 and in the vicinity of the free edge 22, 23 of the sides 14, 15, are covered with a layer 24, 25, 26, 27 of a synthetic material. By free edge 22, 23 of a flank 14, 15 is meant, of course, the edge opposite the rear junction edge 16.

Dans l'exemple représenté, une couche de matériau synthétique 24 à 27 est définie sous forme d'une plaque, préférentiellement en polyuréthanne. Cette plaque 24 à 27 comporte une épaisseur supérieure à 20 mm de préférence de l'ordre de 30 mm. Lesdites couches 24 à 27 sous forme de plaques peuvent être vissées par des systèmes vis-écrou 28 sur le fond 11 et les flancs 14, 15 métalliques du godet 10. Des évidements, sous forme de lamage dans les plaques 24 à 27, permettent un enfoncement des têtes de vis, préférentiellement plates, de manière à ce qu'elles ne déplacent pas en surface desdites plaques 24 à 27.In the example shown, a layer of synthetic material 24 to 27 is defined in the form of a plate, preferably made of polyurethane. This plate 24 to 27 has a thickness greater than 20 mm, preferably of the order of 30 mm. Said layers 24 to 27 in the form of plates can be screwed by screw-nut systems 28 on the bottom 11 and the metal flanks 14, 15 of the cup 10. Recesses, in the form of counterbore in the plates 24 to 27, allow a depressing the screw heads, preferably flat, so that they do not move on the surface of said plates 24 to 27.

A noter de manière avantageuse, qu'au niveau de la paroi externe 20 du fond 11 et/ou de la paroi externe 21 des flancs 14, 15, peuvent être ménagées des butées 29 contre lesquelles peuvent venir en appui lesdites plaques 24 à 27 pour les immobiliser en position, notamment en phase de travail du godet 10.It should be noted advantageously that at the level of the outer wall 20 of the bottom 11 and / or of the outer wall 21 of the flanks 14, 15, stoppers 29 may be formed against which said plates 24 to 27 may immobilize them in position, especially in the working phase of the bucket 10.

Une première plaque 24 recouvre la paroi externe 20 du fond 11 au voisinage du bord tranchant 13. Une deuxième plaque 25 recouvre la paroi externe 21 du flanc 14 au voisinage du bord libre 22 de ce dernier. Une troisième plaque 26 recouvre la paroi externe 21 du flanc 15 au voisinage du bord libre 23 de ce dernier. Une quatrième plaque 27 recouvre la paroi externe 21 du flanc 14 au voisinage du bord de jonction 16. Une cinquième plaque (non visible sur les figures) recouvre la paroi externe 21 du flanc 15, là encore au voisinage du bord de jonction 16.A first plate 24 covers the outer wall 20 of the bottom 11 in the vicinity of the cutting edge 13. A second plate 25 covers the outer wall 21 of the sidewall 14 in the vicinity of the free edge 22 of the latter. A third plate 26 covers the outer wall 21 of the flank 15 in the vicinity of the free edge 23 of this latest. A fourth plate 27 covers the outer wall 21 of the flank 14 in the vicinity of the junction edge 16. A fifth plate (not visible in the figures) covers the outer wall 21 of the flank 15, again in the vicinity of the junction edge 16.

Tout particulièrement, une plaque définissant une couche de matériau synthétique 24 à 27 s'étend à compter d'une arête saillante 30 à 33 sur environ 50 à 300 mm sur la paroi externe 20 ; 21 selon le cas du fond 11 ou des flancs 14, 15.In particular, a plate defining a layer of synthetic material 24 to 27 extends from a protruding edge 30 to 33 of about 50 to 300 mm on the outer wall 20; 21 depending on the case of the bottom 11 or flanks 14, 15.

Selon l'invention, cette couche de matériau synthétique 24 à 27 vient s'étendre, en formant un rebord saillant 24A à 27A, au-delà d'une arête saillante 30 à 33 du bord tranchant 12, du bord de jonction 16 et/ou du bord libre 22, 23.According to the invention, this layer of synthetic material 24 to 27 extends, forming a protruding flange 24A to 27A, beyond a projecting edge 30 to 33 of the cutting edge 12, the joining edge 16 and / or free edge 22, 23.

Avantageusement, elle dépasse de 5 à 100 mm, au-delà de ces arêtes saillantes, 30 à 33, respectivement, le bord tranchant 13, le bord libre 22, 23 et le bord de jonction 16.Advantageously, it protrudes from 5 to 100 mm, beyond these protruding edges, 30 to 33, respectively, the cutting edge 13, the free edge 22, 23 and the joining edge 16.

De manière préférentielle à l'invention, la couche de matériau synthétique 25 à 27 vient en recouvrement sur le bord libre 22, 23 et/ou le bord de jonction 16 des flancs 14, 15 sur l'intégralité de la longueur de ces bords libres 22, 23 et/ou de jonction 16In a preferred manner to the invention, the synthetic material layer 25 to 27 overlaps the free edge 22, 23 and / or the joining edge 16 of the flanks 14, 15 over the entire length of these free edges. 22, 23 and / or junction 16

Evidemment, lesdites couches de matériau synthétique 24 à 27, sous forme de plaques sont soumises à usure.Obviously, said layers of synthetic material 24 to 27 in the form of plates are subject to wear.

Aussi, selon l'invention, au moins une plaque 24 à 27 est subdivisée sous forme de tronçons de plaque de manière à permettre le remplacement partiel de cette dernière. Cette subdivision peut être prévue, selon le cas, parallèle ou perpendiculaire à une arrête saillante 30 à 33 du godet 10.Also, according to the invention, at least one plate 24 to 27 is subdivided into plate sections so as to allow partial replacement of the latter. This subdivision may be provided, as the case may be, parallel or perpendicular to a projecting edge 30 to 33 of the bucket 10.

Ainsi, la plaque 24 venant recouvrir le bord tranchant 13 du fond 11 peut être subdivisée en tronçons parallèlement à l'arête saillante 30 de ce bord tranchant 13. Inversement, les plaques 25, 26, 27, venant en recouvrement du bord libre 22, 23 et du bord de jonction 16 des flancs 14 et 15, peuvent être subdivisées en tronçons suivant une direction perpendiculaire aux arêtes saillantes 30 à 33 que définissent ces bords 22, 23, 16.Thus, the plate 24 coming to cover the cutting edge 13 of the bottom 11 may be subdivided into sections parallel to the projecting edge 30 of this cutting edge 13. Conversely, the plates 25, 26, 27, covering the free edge 22, 23 and the junction edge 16 of the flanks 14 and 15, can be subdivided into sections in a direction perpendicular to the projecting edges 30 to 33 defined by these edges 22, 23, 16.

Selon une autre particularité de l'invention, des moyens de protection similaires, sous forme d'une couche de matériau synthétique 35, 36, sont associés au moyen de fixation 18 surmontant le godet 10.According to another feature of the invention, similar protective means, in the form of a layer of synthetic material 35, 36, are associated with the fastening means 18 over the bucket 10.

De manière substantielle, les moyens de fixation 18 se présentant généralement sous forme de crochets, la couche de matériau synthétique 35, 36 peut, là encore, se présenter sous forme de plaque venant en recouvrement des pattes 37, 38 correspondant à de tels crochets 19.Substantially, the fixing means 18 are generally in the form of hooks, the layer of synthetic material 35, 36 may, again, be in the form of a plate that overlaps tabs 37, 38 corresponding to such hooks 19 .

A noter que, selon un autre mode de réalisation, un godet 10 selon l'invention, peut être recouvert intégralement, au niveau de la paroi externe 20 du fond 11 et/ou au niveau de la paroi externe 21 des flancs 14, 15, par une couche de matériau synthétique, notamment sous forme de plaque.It should be noted that, according to another embodiment, a bucket 10 according to the invention can be completely covered, at the level of the outer wall 20 of the bottom 11 and / or at the level of the outer wall 21 of the sidewalls 14, 15, by a layer of synthetic material, especially in the form of a plate.

Selon encore un autre mode de réalisation, la couche de matériau synthétique peut être surmoulée sur le bord tranchant 13 de manière à recouvrir ce dernier et les parois interne et externe 20 du fond 11 au voisinage du bord tranchant 13 et/ou la couche de matériau synthétique peut être surmoulée sur le bord libre 22, 23 d'un flanc 14, 15 de sorte à recouvrir les parois interne et externe 21 de ce flanc 14, 15 au voisinage dudit bord libre 22, 23 et/ou la couche de matériau synthétique peut être surmoulée sur le bord de jonction arrière 16 d'un flanc 14, 15 de sorte à venir recouvrir la paroi externe 21 de ce flancs 14, 15 et la paroi externe 20 du fond 11 au voisinage de ce bord libre 16.According to yet another embodiment, the layer of synthetic material may be overmolded on the cutting edge 13 so as to cover the latter and the inner and outer walls 20 of the bottom 11 in the vicinity of the cutting edge 13 and / or the layer of material synthetic material can be overmolded on the free edge 22, 23 of a flank 14, 15 so as to cover the inner and outer walls 21 of this sidewall 14, 15 in the vicinity of said free edge 22, 23 and / or the layer of synthetic material may be overmolded on the rear junction edge 16 of a flank 14, 15 so as to cover the outer wall 21 of the sidewalls 14, 15 and the outer wall 20 of the bottom 11 in the vicinity of this free edge 16.

En outre, c'est de manière avantageuse que l'on a pensé adapter la forme d'un tel godet 10 protégé à celle d'une conduite, ceci pour permettre de dégager celle-ci de manière sûre, sur toute sa périphérie.In addition, it is advantageous that one thought to adapt the shape of such a protected cup 10 to that of a pipe, this to allow to release it safely, over its entire periphery.

Ainsi, selon encore une autre particularité de l'invention, les bords libres 22, 23 des flancs 14, 15 sont de forme curviligne de rayon de courbure 39 sensiblement proportionnel à la section de la conduite à dégager.Thus, according to yet another feature of the invention, the free edges 22, 23 of the flanks 14, 15 are of curvilinear shape with a radius of curvature 39 substantially proportional to the section of the pipe to be released.

En outre, de manière préférentielle, la distance 40 séparant le plan 41 perpendiculaire à l'arête 30 au bord tranchant 13 du fond 11 et l'axe de pivotement 19 des moyens de fixation 18 du godet 10 et/ou la distance 42 séparant le plan 43 correspondant à ce bord tranchant 13 par rapport à cet axe de pivotement 19 des moyens de fixation 18 du godet 10 est, respectivement, sont définies, sensiblement proportionnelles à la section de la conduite à dégager.In addition, preferably, the distance 40 separating the plane 41 perpendicular to the edge 30 at the edge cutting edge 13 of the bottom 11 and the pivot axis 19 of the attachment means 18 of the bucket 10 and / or the distance 42 separating the plane 43 corresponding to this cutting edge 13 relative to this pivot axis 19 of the fastening means 18 of the bucket 10 is, respectively, are defined, substantially proportional to the section of the pipe to clear.

Tout particulièrement, la distance 40 est, préférentiellement, comprise entre 450mm et 570mm, préférentiellement de l'ordre de 520mm pour un diamètre de conduite compris entre 80mm et 300mm et comprise entre 950mm et 12500mm, préférentiellement de l'ordre de 1100mm pour un diamètre de conduite compris entre 650mm et 1200mm.In particular, the distance 40 is preferably between 450mm and 570mm, preferably of the order of 520mm for a pipe diameter of between 80mm and 300mm and between 950mm and 12500mm, preferably of the order of 1100mm for a diameter. driving range between 650mm and 1200mm.

Quant-à la distance 42, elle est, préférentiellement, comprise entre 600mm et 800mm, préférentiellement de l'ordre de 700mm pour un diamètre de conduite compris entre 80mm et 300mm et comprise entre 1200mm et 1800mm, préférentiellement de l'ordre de 1500mm pour un diamètre de conduite compris entre 650mm et 1200mm.As for the distance 42, it is, preferably, between 600 mm and 800 mm, preferably of the order of 700 mm for a driving diameter of between 80 mm and 300 mm and between 1200 mm and 1800 mm, preferably of the order of 1500 mm for a pipe diameter of between 650mm and 1200mm.

Les avantages qui découlent de la présente invention consistent qu'au travers d'un godet 10 ainsi parfaitement protégé, il est possible d'approcher, de très près, une conduite active et de la dégager sur toute sa périphérie, notamment au travers d'un godet aux formes adaptées à une telle conduite.The advantages that flow from the present invention consist that through a bucket 10 and perfectly protected, it is possible to approach, very closely, an active conduct and release it on its entire periphery, in particular through a bucket with shapes adapted to such a conduct.

Claims (12)

Godet pour pelle mécanique, comprenant un fond (11) terminé à une extrémité (12) par un bord tranchant (13) et prolongé latéralement par deux flancs (14, 5) sensiblement verticaux, comportant un bord de jonction (16) avec le fond (11) et un bord libre (22, 23), le fond (11) et le flanc (14, 15) étant réalisés en un matériau métallique, caractérisé en ce qu'une couche de matériau synthétique (24, 25, 26, 27) est appliquée sur une paroi externe (20) du fond (11) au moins au voisinage du bord tranchant (13) et sur une paroi externe (21) des flancs (14, 15), au moins au voisinage du bord de jonction (16) avec le fond (11) et du bord libre (22, 23), cette couche de matériau synthétique (24, 25, 26, 27) venant s'étendre, en formant un rebord saillant (24A, 25A, 26A, 27A) au-delà des arêtes saillantes (30, 31, 32, 33) dudit bord tranchant (13), du bord de jonction (16) et du bord libre (22, 23).Bucket for a digger, comprising a bottom (11) terminated at one end (12) by a cutting edge (13) and laterally extended by two substantially vertical flanks (14, 5), having a joining edge (16) with the bottom (11) and a free edge (22, 23), the bottom (11) and the sidewall (14, 15) being made of a metallic material, characterized in that a layer of synthetic material (24, 25, 26, 27) is applied on an outer wall (20) of the bottom (11) at least in the vicinity of the cutting edge (13) and on an outer wall (21) of the flanks (14, 15), at least in the vicinity of the joining edge (16) with the bottom (11) and the free edge (22, 23), this layer of synthetic material (24, 25, 26, 27) extending, forming a protruding flange (24A, 25A, 26A, 27A) beyond the projecting edges (30, 31, 32, 33) of said cutting edge (13), the joining edge (16) and the free edge (22, 23). Godet selon la revendication 1, caractérisé par le fait qu'une couche de matériau synthétique (24 à 27) s'étend, à compter d'une arête saillante (30 à 33) sur environ 50 à 300 mm sur la paroi externe (20, 21), selon le cas, du fond (11) ou des flancs (14, 15).Bucket according to Claim 1, characterized in that a layer of synthetic material (24 to 27) extends from a protruding edge (30 to 33) over approximately 50 to 300 mm on the outer wall (20 to 30 mm). , 21), as the case may be, of the bottom (11) or flanks (14, 15). Godet selon l'une quelconque des revendications précédentes, caractérisé par le fait qu'une couche de matériau synthétique (24 à 27) vient s'étendre, en formant un rebord saillant (24A à 27A), au-delà d'une arête saillante (30 à 33) du bord tranchant (12), du bord de jonction (16) et/ou du bord libre (22, 23) sur une distance de 5 à 100 mm.Bucket according to any one of the preceding claims, characterized in that a layer of synthetic material (24 to 27) extends, forming a protruding flange (24A to 27A), beyond a protruding ridge (30 to 33) of the cutting edge (12), the joining edge (16) and / or the free edge (22, 23) over a distance of 5 to 100 mm. Godet selon l'une quelconque des revendications précédentes, caractérisé par le fait que la couche de matériau synthétique (25 à 27) vient en recouvrement sur le bord libre (22, 23) et/ou le bord de jonction (16) des flancs (14, 15) sur l'intégralité de la longueur d'un bord libre (22, 23) et/ou d'un bord de jonction (16).Bucket according to any one of the preceding claims, characterized in that the layer of synthetic material (25 to 27) overlaps the free edge (22, 23) and / or the joining edge (16) of the sidewalls ( 14, 15) over the entire length of a free edge (22, 23) and / or a joining edge (16). Godet selon l'une quelconque des revendications précédentes, caractérisé par le fait qu'une couche de matériau synthétique (24 à 27) est définie par une plaque.Bucket according to any one of the preceding claims, characterized in that a layer of synthetic material (24 to 27) is defined by a plate. Godet selon la revendication 5, caractérisé par le fait qu'une couche de matériau synthétique (25 à 27) en forme de plaque est fixée par des systèmes vis-écrou (28) sur le fond (11) ou un flanc (14, 15).Bucket according to claim 5, characterized in that a layer of synthetic material (25 to 27) in the form of a plate is fixed by screw-nut systems (28) on the bottom (11) or a sidewall (14, 15). ). Godet selon l'une des revendications 5 et 6, caractérisé par le fait qu'une plaque définissant une couche de matériau synthétique (24 à 27) est subdivisée sous forme de tronçons de plaque.Bucket according to one of claims 5 and 6, characterized in that a plate defining a layer of synthetic material (24 to 27) is subdivided into plate sections. Godet selon l'une quelconque des revendications 1 à 4, caractérisé par le fait que la couche de matériau synthétique est surmoulée sur le bord tranchant (13) de manière à recouvrir ce dernier et les parois interne et externe (20) du fond (11) au moins au voisinage du bord tranchant (13) et/ou sur le bord libre (22, 23) d'un flanc (14, 15) de sorte à recouvrir les parois interne et externe (21) dudit flanc (14, 15) au voisinage dudit bord libre (22, 23) et/ou sur le bord de jonction arrière (16) d'un flanc (14, 15) pour venir recouvrir la paroi externe (21) de ce flanc (14, 15) et la paroi externe (20) du fond (11) au voisinage de ce bord libre (16).Bucket according to any one of claims 1 to 4, characterized in that the layer of synthetic material is overmolded on the cutting edge (13) so as to cover the latter and the inner and outer walls (20) of the bottom (11). ) at least in the vicinity of the cutting edge (13) and / or on the free edge (22, 23) of a flank (14, 15) so as to cover the inner and outer walls (21) of said flank (14, 15). ) in the vicinity of said free edge (22, 23) and / or on the rear junction edge (16) of a flank (14, 15) for covering the outer wall (21) of this flank (14, 15) and the outer wall (20) of the bottom (11) in the vicinity of this free edge (16). Godet selon l'une quelconque des revendications précédentes, caractérisé par le fait qu'une couche de matériau synthétique recouvre intégralement la paroi externe (20) du fond (11) et/ou la paroi externe (21) des flancs (14, 15).Bucket according to any one of the preceding claims, characterized in that a layer of synthetic material completely covers the outer wall (20) of the bottom (11) and / or the outer wall (21) of the sidewalls (14, 15). . Godet selon l'une quelconque des revendications précédentes, caractérisé par le fait que les bords libres (22, 23) des flancs (14, 15) sont de forme curviligne de rayon de courbure (39) proportionnel à la section de la conduite à dégager.Bucket according to any one of the preceding claims, characterized in that the free edges (22, 23) of the flanks (14, 15) are of curvilinear shape with a radius of curvature (39) proportional to the section of the pipe to be released. . Godet selon l'une quelconque des revendications précédentes, caractérisé par le fait que la distance (40) séparant le plan (41) perpendiculaire à l'arête (30) au bord tranchant (13) du fond (11) de l'axe de pivotement (19) de moyen de fixation (18) du godet (10) et/ou la distance (42) séparant le plan (43) correspondant à ce bord tranchant (13) par rapport à cet axe de pivotement (19) du moyen de fixation (18) du godet (10) est, respectivement, sont définis, sensiblement proportionnels à la section de la conduite à dégager.Bucket according to any one of the preceding claims, characterized in that the distance (40) separating the plane (41) perpendicular to the edge (30) to the cutting edge (13) of the bottom (11) of the axis of pivoting (19) of attachment means (18) of the bucket (10) and / or the distance (42) between the plane (43) corresponding to this cutting edge (13) with respect to this pivot axis (19) of the attachment means (18) of the bucket (10) is, respectively, defined, substantially proportional to the section of the pipe to clear. Godet selon l'une quelconque des revendications précédentes, caractérisé par le fait que des protections sous forme d'une couche de matériau synthétique (35, 36) sont associées aux moyens de fixation (18) surmontant le godet (10).Bucket according to any one of the preceding claims, characterized in that protections in the form of a layer of synthetic material (35, 36) are associated with the fastening means (18) overcoming the bucket (10).
EP13158405.4A 2012-03-08 2013-03-08 Bucket for power shovel Active EP2636801B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1252096A FR2987850B1 (en) 2012-03-08 2012-03-08 BUCKET FOR MECHANICAL EXCAVATOR

Publications (2)

Publication Number Publication Date
EP2636801A1 true EP2636801A1 (en) 2013-09-11
EP2636801B1 EP2636801B1 (en) 2018-08-01

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EP13158405.4A Active EP2636801B1 (en) 2012-03-08 2013-03-08 Bucket for power shovel

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EP (1) EP2636801B1 (en)
FR (1) FR2987850B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104775460A (en) * 2015-02-12 2015-07-15 龙岩市海博工程机械有限公司 Wear-resisting improvement structure of excavator bucket
CN107989100A (en) * 2017-11-14 2018-05-04 中电建水环境治理技术有限公司 Ecological dredging equipment accessory

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4905386A (en) * 1988-09-02 1990-03-06 The Dow Chemical Company Process for unearthing hazardous pipeline
JPH11131522A (en) * 1997-11-04 1999-05-18 Katsunori Tanada Operation device of operation tool such as bucket, etc., in excavator
JPH11229445A (en) * 1998-02-19 1999-08-24 Kanmon Kowan Kensetsu Kk Bucket
WO2003078745A1 (en) * 2002-03-18 2003-09-25 Ulf Hedberg Bucket
US20080134548A1 (en) * 2006-08-14 2008-06-12 Wright Danny M Resilient excavation bucket, excavation apparatus, and methods of use and manufacture thereof

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2347921A (en) * 1999-03-17 2000-09-20 Lee Shearsby Dodd Ltd Excavator tool with cutting elements arranged on a convex surface

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4905386A (en) * 1988-09-02 1990-03-06 The Dow Chemical Company Process for unearthing hazardous pipeline
JPH11131522A (en) * 1997-11-04 1999-05-18 Katsunori Tanada Operation device of operation tool such as bucket, etc., in excavator
JPH11229445A (en) * 1998-02-19 1999-08-24 Kanmon Kowan Kensetsu Kk Bucket
WO2003078745A1 (en) * 2002-03-18 2003-09-25 Ulf Hedberg Bucket
US20080134548A1 (en) * 2006-08-14 2008-06-12 Wright Danny M Resilient excavation bucket, excavation apparatus, and methods of use and manufacture thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104775460A (en) * 2015-02-12 2015-07-15 龙岩市海博工程机械有限公司 Wear-resisting improvement structure of excavator bucket
CN107989100A (en) * 2017-11-14 2018-05-04 中电建水环境治理技术有限公司 Ecological dredging equipment accessory
CN107989100B (en) * 2017-11-14 2023-08-08 中电建生态环境集团有限公司 Ecological dredging equipment accessory

Also Published As

Publication number Publication date
EP2636801B1 (en) 2018-08-01
FR2987850B1 (en) 2014-12-26
FR2987850A1 (en) 2013-09-13

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