EP1486620B1 - Cutting tool for the making of trenches, allowing a fast change of the cutter head. - Google Patents

Cutting tool for the making of trenches, allowing a fast change of the cutter head. Download PDF

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Publication number
EP1486620B1
EP1486620B1 EP04291449A EP04291449A EP1486620B1 EP 1486620 B1 EP1486620 B1 EP 1486620B1 EP 04291449 A EP04291449 A EP 04291449A EP 04291449 A EP04291449 A EP 04291449A EP 1486620 B1 EP1486620 B1 EP 1486620B1
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EP
European Patent Office
Prior art keywords
cutting tool
motor assembly
tool according
plate
cutter members
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP04291449A
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German (de)
French (fr)
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EP1486620A1 (en
Inventor
Philippe c/o COMPAGNIE DU SOL Chagnot
Fabrice c/o Compagnie du Sol Mathieu
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Compagnie du Sol SARL
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Compagnie du Sol SARL
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Priority to PL04291449T priority Critical patent/PL1486620T3/en
Publication of EP1486620A1 publication Critical patent/EP1486620A1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/13—Foundation slots or slits; Implements for making these slots or slits
    • 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
    • E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
    • E02F3/20—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels with tools that only loosen the material, i.e. mill-type wheels
    • E02F3/205—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels with tools that only loosen the material, i.e. mill-type wheels with a pair of digging wheels, e.g. slotting machines
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
    • E02F5/08—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with digging wheels turning round an axis

Definitions

  • the present invention relates to a milling tool for making trenches.
  • excavation machines For the excavation of trenches in the ground in order to produce molded walls, excavation machines known as strawberries are known. They comprise a frame suspended at the end of lifting means, this frame being provided at its lower end with two wheels driven by hydraulic motors and provided with teeth distributed on two drums with horizontal axes. These teeth have the role of excavating the ground to turn it into small pieces that can then be transported by suction using a pipe connected to a suction pump and placed on the cutter.
  • Such a milling or excavating tool is described in particular in the European patent EP 262 050 in the name of the plaintiff.
  • the cutter is equipped with two wheels that turn in opposite directions, each wheel having two drums.
  • the wheels as indicated, are rotated by a hydraulic motor or by two hydraulic motors positioned in the central hub of each wheel and arranged at the lower end of the body of the tool.
  • the drums support the teeth that are used to excavate the terrain.
  • teeth For each type of terrain, it is necessary to use teeth adapted to the nature of the terrain to be excavated. Indeed, depending on whether the ground is hard, soft or sticky, the choice of teeth to use and their positioning on the drums is different.
  • the patent FR 2 819 834 describes for example the shape and positioning of teeth to be used in the case of hard ground or sticky terrain.
  • the ground to be excavated is a superposition of layers of rocks of natures and hardnesses different.
  • the cutter has to cross alternating layers of soft rocks then very hard.
  • the problem here is the choice of the type of teeth. Because, as we have already seen, to a type of ground corresponds a type of teeth. Therefore, it would be particularly interesting to be able to change the type of teeth during the same excavation operation to adapt the mill to the ground.
  • a first solution would be to disassemble the drums to which the teeth are attached and then to reassemble other drums to which is fixed another type of teeth.
  • this solution has many disadvantages. As we said, the teeth are firmly fixed, so the successive disassembly and reassembly operations would be long, difficult and risky. Another disadvantage would be the time lost by strawberry users which would imply additional costs to be provided for the excavation operation.
  • the present invention aims to solve this problem by proposing a simple, modular and economical device.
  • the motor assembly is a motor on which the milling members are mounted. It is understood that when changing the cutting head, the removable part comprises the motors and the milling members.
  • the milling tool further comprises suction means secured to the frame, a removable suction nozzle with at least the part of the motor assembly on which the milling members are fixed and means for connecting in a suitable manner. dismountable these two elements. It is understood that the present invention provides connecting means which allow to disassemble the suction nozzle at the same time as the cutting head.
  • the removable fastening means comprise a plate on the underside of which is mounted at least the portion of the motor assembly on which are fixed the milling members. It is understood here that such a plate serves as support for both the motor, the cutters and also the suction nozzle.
  • the lower end of the frame further comprises a plate on which bears the plate associated with the portion of the motor assembly on which the milling member is mounted. It is understood that the interest here lies in the plane support plan which provides the necessary stability when fixing the cutting head to the frame.
  • the relative positioning means and the securing means between the frame and at least the part of the motor assembly on which the milling members are fixed comprise two fixing pins secured to the plate associated with the motor assembly.
  • the axes firstly allow the two plates to be correctly positioned relative to one another, secondly to prevent any relative movement between the two plates and thirdly to fix the two plates in a manner that is easily dismountable.
  • the fixing pin comprises an orifice which passes therethrough and that it is intended to receive a locking member mounted on the frame.
  • the orifices are adapted to receive the locking members.
  • the locking member is a key.
  • a particularly powerful embodiment for the removable attachment is a locking system axes by keying. Said key being positioned in the opening of the axis emerging from the plate associated with the frame.
  • the plate associated with the frame is connected to the lower end of the frame by a pivoting system. It is understood that in this configuration, the cutting head is tilting relative to the frame. There are then several working positions corresponding to different angles of inclination.
  • the plate 14 has on its upper part means for securing the motor assembly 12 with the lower end of the frame.
  • the means consist of two axes in the form of cylindrical metal pins 22 rigidly fixed to the plate 14 symmetrically with respect to the center of the plate 14 and orthogonally to this plate.
  • the lugs 22 further comprise an internal bore 24 which passes horizontally through and has an upper portion 26 conical to facilitate assembly which will be detailed below.
  • a suction nozzle 28 for suction of the cut particles is attached to the center of the lower portion of the plate 14 between the motors.
  • the plate 14 has at its center a cylindrical hole 32 .
  • FIG. 1 and 2 is shown the lower portion of the frame 34 .
  • a metal plate 36 tilting relative to said frame having substantially the same dimensions as the plate 14 associated with the cutting head 10 .
  • the inclination of the plate 36 is controlled by the hydraulic cylinders 38 fixed on said plate.
  • a suction pipe 30 for discharging rock particles cut to the surface.
  • the lower end thereof passes through the plate 36 at its center.
  • two cylindrical orifices 40 having a diameter substantially equal to the diameter of the lugs 22 fixed on the plate 14 associated with the cutting head 10 .
  • These holes 40 are arranged symmetrically with respect to the center of the plate 36 so as to receive the lugs 22 when the two plates are positioned one above the other.
  • Figure 1 shows the frame 34 and the cutting head 10 in the secured position, that is to say in the existing configuration during the excavation operation.
  • the sides of the two plates are parallel in pairs
  • the lugs 22 of the cutting head 10 are positioned in the holes 24 of the plate associated with the frame 36
  • the keys 44 are positioned in the holes 24 of the lugs 22. in order to block any relative movement between the two plates.
  • the hydraulic hoses 46 coming from a surface-mounted winder G are fixed to the frame 34 and their lower ends comprise connectors 48 intended to be connected. to the junction boxes 20 located on the plate 14 associated with the cutting head 10 .
  • the relative arrangement of the end of the frame 34 , the cutting head 10 , the hydraulic fluid supply means and the evacuation means provides a device capable of offering the same functionalities that a non-removable milling tool.
  • disassembly of the cutting head 10 allows a very rapid tool change.
  • disassembly is obtained by actuating cylinders, which greatly facilitates this operation.
  • the engine assembly was constituted by a motor and a torque transmission assembly such as a gearbox so that the engine remains attached to the frame and the torque transmission assembly can be dismounted with the milling members.
  • the cutting head 10 may be mounted on a cutting tool, shown in FIG. 4 , for producing substantially vertical trenches in order to produce molded walls, preferably of great depths, for example at least 20 meters.
  • the cutting tool comprises a tracked vehicle A equipped with a bracket B on which is suspended a milling frame C by means of a cable.
  • Two pairs of horizontal axis milling wheels D driven by hydraulic motors are arranged at the lower end of the milling frame C. These milling wheels are equipped with teeth distributed at the periphery and intended to dig the ground.
  • a hydraulic pump E is also installed on this part of the chassis C , above the milling wheels. This pump makes it possible to suck the particles cut by the cutters and to evacuate them to the surface via the discharge pipe F.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Earth Drilling (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
  • Drilling Tools (AREA)
  • Milling Processes (AREA)
  • Drilling And Boring (AREA)
  • Details Of Cutting Devices (AREA)

Abstract

The tool has metallic cylindrical lugs (22) fixed rigidly on a plate (14), and metallic cleats (44) fixed at end of respective cylinder rods in a chassis (34). Width of the cleats is lower than that of holes (24) in the lugs. A motor assembly (12) comprising cutting units is integrated rigidly on lower part of the plate. The lugs and the cleats allow integration and disintegration of the plate to and from lower end of the chassis.

Description

La présente invention a pour objet un outil de fraisage pour la réalisation de tranchées.The present invention relates to a milling tool for making trenches.

Pour l'excavation de tranchées dans le sol afin de réaliser des parois moulées, on connaît des machines d'excavation appelées le plus souvent fraises. Elles comportent un châssis suspendu à l'extrémité de moyens de levage, ce châssis étant muni à son extrémité inférieure de deux roues entraînées par des moteurs hydrauliques et munis de dents réparties sur deux tambours à axes horizontaux. Ces dents ont pour rôle d'excaver le terrain pour le transformer en morceaux de petite dimension qui peuvent ensuite être transportés par aspiration à l'aide d'un tuyau relié à une pompe d'aspiration et placé sur la fraise.For the excavation of trenches in the ground in order to produce molded walls, excavation machines known as strawberries are known. They comprise a frame suspended at the end of lifting means, this frame being provided at its lower end with two wheels driven by hydraulic motors and provided with teeth distributed on two drums with horizontal axes. These teeth have the role of excavating the ground to turn it into small pieces that can then be transported by suction using a pipe connected to a suction pump and placed on the cutter.

Un tel outil de fraisage ou d'excavation est décrit en particulier dans le brevet européen EP 262 050 au nom de la demanderesse. La fraise est équipée de deux roues qui tournent en sens inverse, chaque roue comportant deux tambours. Les roues, comme on l'a indiqué, sont mises en rotation par un moteur hydraulique ou par deux moteurs hydrauliques positionnés dans le moyeu central de chaque roue et disposés à l'extrémité inférieure du corps de l'outil. Les tambours supportent les dents qui sont utilisées pour excaver le terrain.Such a milling or excavating tool is described in particular in the European patent EP 262 050 in the name of the plaintiff. The cutter is equipped with two wheels that turn in opposite directions, each wheel having two drums. The wheels, as indicated, are rotated by a hydraulic motor or by two hydraulic motors positioned in the central hub of each wheel and arranged at the lower end of the body of the tool. The drums support the teeth that are used to excavate the terrain.

Pour chaque type de terrain, il est nécessaire d'utiliser des dents adaptées à la nature du terrain à excaver. En effet, selon que le terrain est dur, tendre ou bien collant, le choix des dents à utiliser ainsi que leur positionnement sur les tambours est différent. Le brevet FR 2 819 834 décrit par exemple la forme et le positionnement de dents à utiliser dans le cas de terrains durs ou de terrains collants.For each type of terrain, it is necessary to use teeth adapted to the nature of the terrain to be excavated. Indeed, depending on whether the ground is hard, soft or sticky, the choice of teeth to use and their positioning on the drums is different. The patent FR 2 819 834 describes for example the shape and positioning of teeth to be used in the case of hard ground or sticky terrain.

Le document EP 0 496 926 A1 décrit un outil de fraisage selon le préambule de la revendication 1.The document EP 0 496 926 A1 discloses a milling tool according to the preamble of claim 1.

Lors de l'excavation, les dents subissent des efforts mécaniques très importants si bien qu'elles doivent être solidement fixées aux tambours.During excavation, the teeth undergo very great mechanical forces so that they must be firmly attached to the drums.

En général, le terrain à creuser est une superposition de couches de roches de natures et de duretés différentes. Ainsi, lors d'une opération d'excavation, il est possible que la fraise ait à traverser une alternance de couches de roches meubles puis très dures. Le problème qui se pose ici réside dans le choix du type de dents. Car, comme nous l'avons déjà vu, à un type de terrain correspond un type de dents. Dès lors, il serait particulièrement intéressant de pouvoir changer de type de dents au cours d'une même opération d'excavation afin d'adapter la fraise au terrain.In general, the ground to be excavated is a superposition of layers of rocks of natures and hardnesses different. Thus, during an excavation operation, it is possible that the cutter has to cross alternating layers of soft rocks then very hard. The problem here is the choice of the type of teeth. Because, as we have already seen, to a type of ground corresponds a type of teeth. Therefore, it would be particularly interesting to be able to change the type of teeth during the same excavation operation to adapt the mill to the ground.

Une première solution consisterait à démonter les tambours auxquels sont fixées les dents puis à remonter d'autres tambours auxquels est fixé un autre type de dents. Bien que réalisable, cette solution présente de nombreux inconvénients. Comme nous l'avons dit, les dents sont solidement fixées, donc les opérations successives de démontage et de remontage seraient longues, difficiles et hasardeuses. Un autre inconvénient serait le temps perdu par les utilisateurs de la fraise ce qui impliquerait des coûts supplémentaires à prévoir pour l'opération d'excavation.A first solution would be to disassemble the drums to which the teeth are attached and then to reassemble other drums to which is fixed another type of teeth. Although achievable, this solution has many disadvantages. As we said, the teeth are firmly fixed, so the successive disassembly and reassembly operations would be long, difficult and risky. Another disadvantage would be the time lost by strawberry users which would imply additional costs to be provided for the excavation operation.

La présente invention vise à résoudre ce problème en proposant un dispositif simple, modulaire et économique.The present invention aims to solve this problem by proposing a simple, modular and economical device.

Ce but est atteint grâce au fait que l'outil de fraisage comprend, selon la revendication 1 :

  • un châssis ;
  • une pluralité d'organes de fraisage disposés sur au moins une surface cylindrique ;
  • un ensemble moteur ;
  • des moyens d'alimentation en énergie dudit ensemble moteur,
ledit outil de fraisage se caractérisant en ce qu'il comprend en outre :
  • des moyens démontables de solidarisation d'au moins une partie de l'ensemble moteur sur laquelle sont montés les organes de fraisage avec l'extrémité inférieure du châssis ;
  • des moyens de positionnement relatif entre le châssis et l'ensemble moteur ;
  • des moyens pour relier les moyens d'alimentation en énergie à l'ensemble moteur,
par quoi au moins une partie de l'ensemble moteur avec les organes de fraisage peuvent être aisément démontés par rapport au châssis de la machine.This object is achieved by the fact that the milling tool comprises, according to claim 1:
  • a chassis ;
  • a plurality of milling members disposed on at least one cylindrical surface;
  • an engine assembly;
  • means for supplying power to said motor assembly,
said milling tool being characterized in that it further comprises:
  • removable means for securing at least a portion of the motor assembly on which the milling members are mounted with the lower end of the frame;
  • relative positioning means between the frame and the motor assembly;
  • means for connecting the power supply means to the motor assembly,
whereby at least a portion of the motor assembly with the milling members can be easily disassembled from the frame of the machine.

On comprend que grâce aux dispositions de l'invention, il sera particulièrement simple et rapide d'adapter les dents de fraisage au terrain à excaver via un changement simple et rapide de la tête de coupe qui comprend à la fois les moteurs et/ou le système de transmission de couple tel un réducteur, les tambours et les dents. Les moyens démontables de solidarisation et les moyens de positionnement assurent la rigidité et la solidité de l'outil de fraisage lors de l'opération d'excavation.It will be understood that, thanks to the provisions of the invention, it will be particularly simple and quick to adapt the milling teeth to the ground to be excavated by means of a simple and rapid change of the cutting head which comprises both the motors and / or the torque transmission system such as a reducer, drums and teeth. The demountable fastening means and the positioning means ensure the rigidity and strength of the milling tool during the excavation operation.

Avantageusement, l'ensemble moteur est un moteur sur lequel sont montés les organes de fraisage.
On comprend que lors du changement de la tête de coupe, la partie démontable comporte les moteurs et les organes de fraisage.Advantageously, the motor assembly is a motor on which the milling members are mounted.
It is understood that when changing the cutting head, the removable part comprises the motors and the milling members.

Avantageusement, l'outil de fraisage comporte en outre un moyen d'aspiration solidaire du châssis, une buse d'aspiration démontable avec au moins la partie de l'ensemble moteur sur laquelle sont fixés les organes de fraisage et un moyen pour relier de façon démontable ces deux éléments. On comprend que la présente invention prévoit des moyens de connexion qui permettent de démonter la buse d'aspiration en même temps que la tête de coupe.Advantageously, the milling tool further comprises suction means secured to the frame, a removable suction nozzle with at least the part of the motor assembly on which the milling members are fixed and means for connecting in a suitable manner. dismountable these two elements. It is understood that the present invention provides connecting means which allow to disassemble the suction nozzle at the same time as the cutting head.

Avantageusement, les moyens de solidarisation démontables comportent une plaque sur la face inférieure de laquelle est monté au moins la partie de l'ensemble moteur sur laquelle sont fixés les organes de fraisage. On comprend ici qu'une telle plaque sert de support à la fois pour le moteur, les fraises et également la buse d'aspiration.Advantageously, the removable fastening means comprise a plate on the underside of which is mounted at least the portion of the motor assembly on which are fixed the milling members. It is understood here that such a plate serves as support for both the motor, the cutters and also the suction nozzle.

Avantageusement, l'extrémité inférieure du châssis comporte en outre une plaque sur laquelle vient en appui la plaque associée à la partie de l'ensemble moteur sur laquelle sont montés le organes de fraisage. On comprend que l'intérêt réside ici dans l'appui plan sur plan qui confère la stabilité nécessaire lors de la fixation de la tête de coupe au châssis.Advantageously, the lower end of the frame further comprises a plate on which bears the plate associated with the portion of the motor assembly on which the milling member is mounted. It is understood that the interest here lies in the plane support plan which provides the necessary stability when fixing the cutting head to the frame.

Avantageusement, les moyens de positionnement relatif et les moyens de solidarisation entre le châssis et au moins la partie de l'ensemble moteur sur laquelle sont fixés les organes de fraisage comportent deux axes de fixation solidarisés sur la plaque associée à l'ensemble moteur. Dans cette configuration, les axes permettent premièrement de positionner correctement les deux plaques l'une par rapport à l'autre, deuxièmement d'empêcher tout mouvement relatif entre les deux plaques et troisièmement de fixer solidairement de manière facilement démontable les deux plaques.Advantageously, the relative positioning means and the securing means between the frame and at least the part of the motor assembly on which the milling members are fixed comprise two fixing pins secured to the plate associated with the motor assembly. In this configuration, the axes firstly allow the two plates to be correctly positioned relative to one another, secondly to prevent any relative movement between the two plates and thirdly to fix the two plates in a manner that is easily dismountable.

Avantageusement, l'axe de fixation comporte un orifice qui le traverse de part en part et qu'il est destiné à recevoir un organe de verrouillage montée sur le châssis. On comprend que lorsque les deux plaques sont positionnées l'une sur l'autre et que les axes débouchent des orifices correspondants, les orifices sont aptes à recevoir les organes de verrouillage.Advantageously, the fixing pin comprises an orifice which passes therethrough and that it is intended to receive a locking member mounted on the frame. We understand that when both plates are positioned one on the other and the axes open out corresponding orifices, the orifices are adapted to receive the locking members.

Avantageusement, l'organe de verrouillage est une clavette. En effet, un mode de réalisation particulièrement performant pour la fixation démontable est un système de verrouillage des axes par clavetage. Ladite clavette étant positionnée dans l'orifice de l'axe débouchant de la plaque associée au châssis.Advantageously, the locking member is a key. Indeed, a particularly powerful embodiment for the removable attachment is a locking system axes by keying. Said key being positioned in the opening of the axis emerging from the plate associated with the frame.

Avantageusement, la plaque associée au châssis est reliée à l'extrémité inférieure du châssis par un système à pivotement. On comprend que dans cette configuration, la tête de coupe est inclinable par rapport au châssis. On dispose alors de plusieurs positions de travail correspondant à des angles d'inclinaison différents.Advantageously, the plate associated with the frame is connected to the lower end of the frame by a pivoting system. It is understood that in this configuration, the cutting head is tilting relative to the frame. There are then several working positions corresponding to different angles of inclination.

L'invention sera mieux comprise et ses avantages apparaîtront mieux à la lecture de la description détaillée qui suit, de modes de réalisation représentés à titre d'exemples non limitatifs. La description se réfère aux dessins annexés, sur lesquels :

  • la figure 1 représente une vue en perspective de la tête de coupe fixée sur le châssis ;
  • la figure 2 représente une vue en perspective de la tête de coupe désolidarisée du châssis ;
  • la figure 3 représente une vue de face de la tête de coupe ; et
  • la figure 4 représente une vue générale de l'outil de coupe.
Sur les figures 1 et 3 est représentée la tête de coupe 10 en position démontée. L'ensemble moteur 12 comporte deux moteurs hydrauliques (non représentés) solidarisés de manière rigide sur la partie inférieure d'une plaque 14. Quatre tambours cylindriques 16 constitués par des viroles sont entraînés en rotation par les moteurs grâce à des moyens de liaison mécanique non représentés ici. En périphérie des tambours sont fixés rigidement les organes de fraisage 18 que l'on nomme également dents de fraisage. Les moteurs hydrauliques sont reliés par des flexibles hydrauliques à deux boîtiers de jonction hydrauliques 20 fixés sur la partie supérieure de ladite plaque 14, symétriquement par rapport au centre de la plaque. Ces flexibles et les boîtiers de jonction 20 font partie des moyens d'alimentation en énergie dudit ensemble moteur 12. Dans ce cas, l'énergie utilisée est la pression hydraulique.The invention will be better understood and its advantages will appear better on reading the detailed description which follows, of embodiments shown by way of non-limiting examples. The description refers to the accompanying drawings, in which:
  • Figure 1 shows a perspective view of the cutting head fixed on the frame;
  • Figure 2 shows a perspective view of the cutting head disengaged from the frame;
  • Figure 3 shows a front view of the cutting head; and
  • Figure 4 shows a general view of the cutting tool.
In Figures 1 and 3 is shown the cutting head 10 in disassembled position. The motor assembly 12 comprises two hydraulic motors (not shown) rigidly secured to the lower part of a plate 14 . Four cylindrical drums 16 constituted by ferrules are rotated by the motors by means of mechanical connection means not shown here. At the periphery of the drums are fixed rigidly the milling members 18 which are also called milling teeth. The hydraulic motors are connected by hydraulic hoses to two hydraulic junction boxes 20 fixed on the upper part of said plate 14 , symmetrically with respect to the center of the plate. These hoses and the junction boxes 20 are part of means for supplying power to said motor assembly 12 . In this case, the energy used is the hydraulic pressure.

La plaque 14 comporte sur sa partie supérieure des moyens de solidarisation de l'ensemble moteur 12 avec l'extrémité inférieure du châssis. Les moyens sont constitués de deux axes se présentant sous la forme d'ergots cylindriques métalliques 22 fixés rigidement sur la plaque 14 symétriquement par rapport au centre de la plaque 14 et orthogonalement à cette plaque. Les ergots 22 comportent en outre un perçage intérieur 24 qui les traverse horizontalement de part en part et ont une partie supérieure 26 conique afin de faciliter le montage qui sera détaillé ci-après.The plate 14 has on its upper part means for securing the motor assembly 12 with the lower end of the frame. The means consist of two axes in the form of cylindrical metal pins 22 rigidly fixed to the plate 14 symmetrically with respect to the center of the plate 14 and orthogonally to this plate. The lugs 22 further comprise an internal bore 24 which passes horizontally through and has an upper portion 26 conical to facilitate assembly which will be detailed below.

Une buse d'aspiration 28 destinée à l'aspiration des particules découpées est fixée au centre de la partie inférieure de la plaque 14 entre les moteurs. Dans le but de raccorder cette buse 28 à la conduite d'aspiration 30 qui sera détaillée ci-après, la plaque 14 comporte en son centre un trou cylindrique 32.A suction nozzle 28 for suction of the cut particles is attached to the center of the lower portion of the plate 14 between the motors. In order to connect this nozzle 28 to the suction pipe 30 which will be detailed below, the plate 14 has at its center a cylindrical hole 32 .

Sur les figures 1 et 2 est représentée la partie inférieure du châssis 34. A l'extrémité inférieure du châssis 34 est fixée une plaque métallique 36 inclinable par rapport audit châssis ayant sensiblement les mêmes dimensions que la plaque 14 associée à la tête de coupe 10. L'inclinaison de la plaque 36 est commandée par les vérins hydrauliques 38 fixés sur ladite plaque.In Figures 1 and 2 is shown the lower portion of the frame 34 . At the lower end of the frame 34 is fixed a metal plate 36 tilting relative to said frame having substantially the same dimensions as the plate 14 associated with the cutting head 10 . The inclination of the plate 36 is controlled by the hydraulic cylinders 38 fixed on said plate.

Le long du châssis 34 est fixée en outre une conduite d'aspiration 30 destinée à évacuer les particules de roche découpées vers la surface. L'extrémité inférieure de celle-ci traverse la plaque 36 au niveau de son centre.Along the frame 34 is further fixed a suction pipe 30 for discharging rock particles cut to the surface. The lower end thereof passes through the plate 36 at its center.

Sur la plaque 36 associée au châssis, sont présents deux orifices cylindriques 40 ayant un diamètre sensiblement égal au diamètre des ergots 22 fixés sur la plaque 14 associée à la tête de coupe 10. Ces trous 40 sont disposés symétriquement par rapport au centre de la plaque 36 de manière à recevoir les ergots 22 lorsque les deux plaques sont positionnées l'une au-dessus de l'autre.On the plate 36 associated with the frame, are present two cylindrical orifices 40 having a diameter substantially equal to the diameter of the lugs 22 fixed on the plate 14 associated with the cutting head 10 . These holes 40 are arranged symmetrically with respect to the center of the plate 36 so as to receive the lugs 22 when the two plates are positioned one above the other.

A proximité de ces trous 40 sont fixés des vérins hydrauliques 42 sur la partie supérieure de la plaque 36 associée au châssis. A l'extrémité des tiges des vérins est fixée une clavette métallique 44 dont la largeur est sensiblement inférieure à la largeur du trou 24 des ergots 22 mentionnés ci-dessus et dont la longueur s'étend selon l'axe XX'. La position des vérins 42 est telle que l'on peut déplacer les clavettes 44 selon l'axe XX' et, en position actionnée, les clavettes 44 se situent exactement au-dessus des trous 24 de la plaque 36. Near these holes 40 are fixed hydraulic cylinders 42 on the upper part of the plate 36 associated with the frame. At the end of the rods of the cylinders is fixed a metal key 44 whose width is substantially less than the width of the hole 24 of the lugs 22 mentioned above and whose length extends along the axis XX '. The position of the cylinders 42 is such that one can move the keys 44 along the axis XX 'and, in the actuated position, the keys 44 are located exactly above the holes 24 of the plate 36.

La figure 1 représente le châssis 34 et la tête de coupe 10 en position solidarisée, c'est-à-dire dans la configuration existante lors de l'opération d'excavation. Dans cette configuration, les côtés des deux plaques sont parallèles deux à deux, les ergots 22 de la tête de coupe 10 sont positionnés dans les trous 24 de la plaque associée au châssis 36 et les clavettes 44 sont positionnées dans les trous 24 des ergots 22 de manière à bloquer tout mouvement relatif entre les deux plaques.Figure 1 shows the frame 34 and the cutting head 10 in the secured position, that is to say in the existing configuration during the excavation operation. In this configuration, the sides of the two plates are parallel in pairs, the lugs 22 of the cutting head 10 are positioned in the holes 24 of the plate associated with the frame 36 and the keys 44 are positioned in the holes 24 of the lugs 22. in order to block any relative movement between the two plates.

Dans le but d'alimenter les moteurs en fluide hydraulique, les flexibles hydrauliques 46 provenant d'un enrouleur G situé en surface (visible sur la figure 4), sont fixés au châssis 34 et leurs extrémités inférieures comportent des raccords 48 destinés à être reliés aux boîtiers de jonction 20 situés sur la plaque 14 associée à la tête de coupe 10.In order to supply the engines with hydraulic fluid, the hydraulic hoses 46 coming from a surface-mounted winder G (visible in FIG. 4 ) are fixed to the frame 34 and their lower ends comprise connectors 48 intended to be connected. to the junction boxes 20 located on the plate 14 associated with the cutting head 10 .

Toujours dans cette configuration, l'extrémité inférieure de la conduite d'aspiration 30 vient en contact étanche avec l'extrémité supérieure de la buse 28. Le contact plan sur plan des deux plaques assure en effet l'étanchéité de l'organe d'aspiration ainsi constitué.Still in this configuration, the lower end of the suction pipe 30 comes into sealing contact with the upper end of the nozzle 28. The plane-to-plane contact of the two plates in fact ensures the sealing of the body. suction thus constituted.

On comprend que dans cette configuration, la disposition relative de l'extrémité du châssis 34, de la tête de coupe 10, des moyens d'alimentation en fluide hydraulique et des moyens d'évacuation fournit un dispositif apte à offrir les mêmes fonctionnalités qu'un outil de fraisage non-démontable.It is understood that in this configuration, the relative arrangement of the end of the frame 34 , the cutting head 10 , the hydraulic fluid supply means and the evacuation means provides a device capable of offering the same functionalities that a non-removable milling tool.

Néanmoins, le démontage global de la tête de coupe 10 permet un changement d'outil très rapide. De plus, dans le mode de réalisation décrit, le démontage est obtenu en actionnant des vérins, ce qui facilite grandement cette opération.Nevertheless, the overall disassembly of the cutting head 10 allows a very rapid tool change. In addition, in the embodiment described, disassembly is obtained by actuating cylinders, which greatly facilitates this operation.

Il va de soi que l'on ne sortirait pas de l'invention si l'ensemble moteur était constitué par un moteur et par un ensemble de transmission de couple de rotation tel un réducteur de façon à ce que le moteur reste solidaire du châssis et l'ensemble de transmission de couple soit démontable avec les organes de fraisage.It goes without saying that it would not go beyond the invention if the engine assembly was constituted by a motor and a torque transmission assembly such as a gearbox so that the engine remains attached to the frame and the torque transmission assembly can be dismounted with the milling members.

D'autre part, on ne sortirait pas non plus de l'invention dans le cas où le moteur serait un moteur électrique et les moyens d'alimentation en énergie seraient des câbles électriques.On the other hand, one would not go out of the invention either in the case where the motor would be an electric motor and the power supply means would be electric cables.

La tête de coupe 10 peut être montée sur un outil de coupe, représenté sur la figure 4, pour la réalisation de tranchées sensiblement verticales en vue de réaliser des parois moulées, de préférence de grandes profondeurs, par exemple au moins 20 mètres.The cutting head 10 may be mounted on a cutting tool, shown in FIG. 4 , for producing substantially vertical trenches in order to produce molded walls, preferably of great depths, for example at least 20 meters.

L'outil de coupe comprend un véhicule à chenilles A équipé d'une potence B sur laquelle est suspendu un châssis de fraisage C par l'intermédiaire d'un câble. Deux paires de roues de fraisage D d'axes horizontaux entraînées par des moteurs hydrauliques sont disposées à l'extrémité inférieure du châssis de fraisage C. Ces roues de fraisage sont équipées de dents réparties en périphérie et destinées à creuser le sol.The cutting tool comprises a tracked vehicle A equipped with a bracket B on which is suspended a milling frame C by means of a cable. Two pairs of horizontal axis milling wheels D driven by hydraulic motors are arranged at the lower end of the milling frame C. These milling wheels are equipped with teeth distributed at the periphery and intended to dig the ground.

Une pompe hydraulique E est également installée sur cette partie du châssis C, au dessus des roues de fraisage. Cette pompe permet d'aspirer les particules découpées par les fraises et de les évacuer vers la surface par l'intermédiaire du tuyau d'évacuation F.A hydraulic pump E is also installed on this part of the chassis C , above the milling wheels. This pump makes it possible to suck the particles cut by the cutters and to evacuate them to the surface via the discharge pipe F.

Claims (17)

  1. A cutting tool for digging vertical trenches, the tool comprising:
    - a jib (B) from which is suspended a cutter structure (34; C) via a cable;
    - a plurality of cutter members (18) disposed on at least one cylindrical surface;
    - a motor assembly (12);
    - power supply means (46) for powering said motor assembly (12);
    the tool being characterised in that it further comprises:
    - releasable retention means (22; 44) for securing at least a portion of the motor assembly (12) having the cutter members (18) mounted thereon to the bottom end of the structure (34);
    - relative positioning means between the structure (34) and the motor assembly (12); and
    - means for connecting the power supply means (46) to the motor assembly (12);
    whereby at least a portion of the motor assembly (12) with the cutter members (18) can easily be separated from the structure (34) of the machine.
  2. A cutting tool according to claim 1, characterised in that the motor assembly (12) is a motor secured to the structure (34) via the releasable retention means (22; 44).
  3. A cutting tool according to claim 2, characterised it that said motor is a hydraulic motor.
  4. A cutting tool according to any one of claims 1 to 3, characterised in that said power supply means are hydraulic hoses (46).
  5. A cutting tool according to any one of claims 1 to 4, characterised in that it further includes suction means (30, F) secured to the structure (34, C), a separable suction nozzle (28) associated with at least the portion of the motor assembly (12) having the cutter members (18) fixed thereon, and means for releasably connecting these two elements.
  6. A cutting tool according to any one of claims 1 to 5, characterised in that the means for connecting the motor assembly (12) to the power supply means comprise junction boxes (20).
  7. A cutting tool according to any one of claims 1 to 6, characterised in that the releasable retention means include a plate (14) having at least the portion of the motor assembly (12) that supports the cutter members (18) mounted on the bottom face thereof.
  8. A cutting tool according to claim 7, characterised in that the bottom end of the structure (34) further includes a plate (36) which comes to bear on the plate (14) associated at least with said portion of the motor assembly (12) that supports the cutter members (18).
  9. A cutting tool according to claim 7 or claim 8, characterised in that the relative positioning means and the retention means between the structure (34) and at least a portion of the motor assembly (12) comprise at least one fixing peg (22) secured to the plate (14) associated with at least the portion of the motor assembly (12) that supports the cutter members (18).
  10. A cutting tool according to any one of claims 7 to 9, characterised in that the relative positioning means and the retention means between the structure (34) and at least a portion of the motor assembly (12) comprise two fixing pegs (22) secured to the plate (14) associated at least with the portion of the motor assembly (12) that supports the cutter members (18).
  11. A cutting tool according to any one of claims 8 to 10, characterised in that the relative positioning means between the structure (34) and at least the portion of the motor assembly (12) which supports the cutter members (18) includes at least one orifice (40) situated on the plate associated with the structure (34) and designed to receive a fixing peg (22).
  12. A cutting tool according to any one of claims 9 to 11, characterised in that said fixing peg (22) includes a through orifice (24) for receiving a locking member (44) mounted on the structure (34).
  13. A cutting tool according to claim 12, characterised in that the locking member (44) is actuated by drive means (42).
  14. A cutting tool according to claim 13, characterised in that said drive means comprise at least one actuator (42).
  15. A cutting tool according to any one of claims 12 to 14, characterised in that the locking member (44) is a cotter-pin.
  16. A cutting tool according to claim 7, characterised in that the plate associated with the structure (34) is connected to the bottom end of the structure (34) by a pivot system.
  17. A cutting tool according to claim 16, characterised in that the pivot system comprises hydraulic actuators (38).
EP04291449A 2003-06-11 2004-06-10 Cutting tool for the making of trenches, allowing a fast change of the cutter head. Expired - Lifetime EP1486620B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL04291449T PL1486620T3 (en) 2003-06-11 2004-06-10 Cutting tool for the making of trenches, allowing a fast change of the cutter head.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0307028A FR2856088B1 (en) 2003-06-11 2003-06-11 MILLING TOOL FOR MAKING TRENCHES, PERMITTING RAPID CHANGE OF THE CUTTER HEAD
FR0307028 2003-06-11

Publications (2)

Publication Number Publication Date
EP1486620A1 EP1486620A1 (en) 2004-12-15
EP1486620B1 true EP1486620B1 (en) 2007-08-22

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Application Number Title Priority Date Filing Date
EP04291449A Expired - Lifetime EP1486620B1 (en) 2003-06-11 2004-06-10 Cutting tool for the making of trenches, allowing a fast change of the cutter head.

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US (1) US7114271B2 (en)
EP (1) EP1486620B1 (en)
JP (1) JP4503360B2 (en)
KR (1) KR101093292B1 (en)
AT (1) ATE371060T1 (en)
CA (1) CA2470810C (en)
DE (1) DE602004008375T2 (en)
ES (1) ES2293183T3 (en)
FR (1) FR2856088B1 (en)
HK (1) HK1072793A1 (en)
PL (1) PL1486620T3 (en)

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Also Published As

Publication number Publication date
DE602004008375D1 (en) 2007-10-04
DE602004008375T2 (en) 2008-05-15
US20050000122A1 (en) 2005-01-06
FR2856088B1 (en) 2005-09-09
PL1486620T3 (en) 2008-01-31
ES2293183T3 (en) 2008-03-16
JP4503360B2 (en) 2010-07-14
CA2470810C (en) 2012-08-21
EP1486620A1 (en) 2004-12-15
CA2470810A1 (en) 2004-12-11
JP2005002785A (en) 2005-01-06
KR101093292B1 (en) 2011-12-14
HK1072793A1 (en) 2005-09-09
FR2856088A1 (en) 2004-12-17
ATE371060T1 (en) 2007-09-15
US7114271B2 (en) 2006-10-03
KR20040106241A (en) 2004-12-17

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