EP3012403B1 - System for attaching a cutting tool to a cutting head of a tunnel-boring machine and tunnel-boring machine comprising such an attachment system - Google Patents

System for attaching a cutting tool to a cutting head of a tunnel-boring machine and tunnel-boring machine comprising such an attachment system Download PDF

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Publication number
EP3012403B1
EP3012403B1 EP15189964.8A EP15189964A EP3012403B1 EP 3012403 B1 EP3012403 B1 EP 3012403B1 EP 15189964 A EP15189964 A EP 15189964A EP 3012403 B1 EP3012403 B1 EP 3012403B1
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EP
European Patent Office
Prior art keywords
wedges
housing
cutting tool
faces
flanges
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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.)
Not-in-force
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EP15189964.8A
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German (de)
French (fr)
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EP3012403A1 (en
Inventor
Salam MOUBARAK
Thomas Camus
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NFM Technologies SAS
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NFM Technologies SAS
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Priority to PL15189964T priority Critical patent/PL3012403T3/en
Publication of EP3012403A1 publication Critical patent/EP3012403A1/en
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Publication of EP3012403B1 publication Critical patent/EP3012403B1/en
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/10—Making by using boring or cutting machines
    • E21D9/1006—Making by using boring or cutting machines with rotary cutting tools
    • E21D9/104—Cutting tool fixtures

Definitions

  • the present invention relates to a system for fixing a cutting tool on a cutting head of a tunnel boring machine.
  • the invention also relates to a tunnel boring machine comprising a cutting head including cutting tools fixed in the cutting head by means of such fastening systems.
  • Tunnel boring machines usually include a cutting head with knobs, which are circular cutting tools that rotate around an axis and punch the rock in the form of flaking plates. Tunneling machines may also include scraper tools called "rippers".
  • a cutting head thus comprises a plurality of wheels distributed regularly on its surface. Each of the knobs is fixed in a housing on the cutting head most often by a set of screws, wedges and nuts.
  • Such fastening systems manufactured in particular by the company Robbins, generally comprise several detachable elements such as shims for locking in position the wheel, wedge locking screws and possibly clamping nuts. These elements must be disassembled one by one by the operators when changing worn wheels. In some of these systems, the holds are not integral with any other part.
  • WO-2011/076616 discloses a wheel attachment system comprising a bayonet secured to the wheel, and movable in rotation relative to a support of the wheel, between a first position, in which edges of the bayonet are engaged in notches of a housing in which the wheel is mounted, and a second position, wherein the wheel can be extracted from the housing.
  • a preload is applied by means of screws inserted in holes of the bayonet.
  • the invention intends to remedy more particularly by proposing a new system for fixing a cutting tool on a cutting head of a tunnel boring machine, making it possible to replace the cutting tools in a simpler way and faster than the systems of the prior art.
  • the invention relates to a fixing system of a cutting tool on a cutting head of a tunnel boring machine, comprising a housing secured to the cutting head, in which the cutting tool is inserted, the cutting tool comprising two flanges between which is mounted an active part, the fastening system also comprising retractable locking elements captively connected to the flanges and adapted to lock the flanges in the housing, the locking elements being movable relative to the flanges between a first position, wherein the locking elements are engaged in the housing so as to lock the cutting tool in the housing, and a second position, in which the locking elements are disengaged from the housing and allow the extraction of the case cutting tool, characterized in that it comprises moving means integral with the cutting tool adapted for displacement. er translation locking elements between their first position and their second position, and in that these moving means are adapted to be actuated by a single operation.
  • the cutting tool such as a wheel or a ripper
  • the housing by means of locking elements whose movement does not require other means external to the fastening system than key.
  • Disassembly and reassembly of the cutting tools are simple and fast, and can in particular be performed by robots able to control the means of travel.
  • the invention also relates to a tunnel boring machine comprising a cutting head including cutting tools fixed in the cutting head by means of fixing systems as mentioned above.
  • the figure 1 represents a fastening system 100 of a cutting tool, formed by a wheel 1 in this example, on a not shown cutting head of a TBM also not shown.
  • the fastening system 100 comprises a hollow housing 3 fixedly secured to the cutting head, and wherein the wheel 1 is inserted.
  • the housing 3 has a front face 30, of which the wheel 1 protrudes, and intended to be vis-à-vis with a rock wall to dig.
  • the housing 3 comprises a rear face 32, by which the operators have access to the fastening system 100 to disassemble the wheel 1 to be replaced by a new wheel.
  • An axis perpendicular to the front 30 and rear faces 32 defines the longitudinal direction XX 'of the fastening system 100.
  • the qualifiers "front" and "back” are used with reference to the front 30 and rear 32.
  • the wheel 1 comprises two flanges 5 and 6, between which is mounted a rotating part of the wheel 1 comprising a cutting disc 70.
  • This rotating part forms an active part of the cutting tool, adapted to be in contact with the ground and dig it.
  • the flanges 5 and 6 are inserted in corresponding recessed reliefs 340 and 360 formed respectively in an upper wall 34 and a lower wall 36 of the housing 3.
  • the flanges 5 and 6 each have two lateral faces 51 and 61 forming a conical profile of which the shape is complementary with the surfaces of the recessed reliefs 340 and 360. This complementary shape facilitates the insertion and alignment of the wheel 1 in the housing 3.
  • the fastening system 100 further comprises two screws 8 each screwed into a threaded hole in one of the flanges 5 and 6.
  • the disassembly of the wheel does not require the screws 8 of the flanges 5 and 6 to be completely unscrewed and thus all the parts of the fastening system remain integral with each other and the wheel 1 during disassembly and reassembly operations.
  • the screws 8 are mounted along longitudinal axes parallel to the axis X-X '.
  • the fastening system 100 also comprises clamping members 11.
  • a clamping piece 11 is slidably mounted in translation parallel to the axis XX 'on each of the screws 8.
  • the clamping pieces 11 have a generally triangular symmetrical with respect to the axes of the screws 8.
  • a ring 13 is screwed on each of the screws 8.
  • the screws 8 and the rings 13 are integral in translation along the axis X-X '.
  • a head 80 of the screw 8 is accessible from the rear side of each of the clamping pieces 11 so as to form a control operable by an operator or a robot performing the disassembly of the wheel 1.
  • the clamping pieces 11 are captive of the screws 8 between the rings 13 and the heads 80, so that when the screws 8 are screwed, the clamping pieces 11 are driven in translation towards the front by the head 80. When unscrewing screws 8, the clamping pieces 11 are driven in translation backwards by the rings 13.
  • the wedges 15 and 16 are mounted on the clamping pieces 11 in sliding connection on inclined faces 110 and 111 with respect to the longitudinal axis of the screws 8, the shims 15 and 16 being free in translation along the inclined faces 110 and 111.
  • the wedges 15 and 16 have a generally parallelepiped shape.
  • the slide connection between the wedges 15 and 16 and the inclined faces 110 and 111 is formed by the sliding between rails 113 of the inclined faces 110 and 111 and grooves provided in the wedges 15 and 16 whose shape is complementary to that of the rails 113.
  • the wheel 1 When the wheel 1 is extracted, it forms a single block with the screws 8, the clamping pieces 11, the rings 13 and the shims 15 and 16. None of these parts need to be disconnected. which simplifies the extraction of wheel 1 and avoids the risk of loss.
  • the recessed reliefs 340 and 360 comprise lateral notches 370 symmetrical with respect to a median plane Pm of the casing 3, passing through the axis X-X ', perpendicular to the walls 34 and 36 and to the faces 30 and 32.
  • the notches 370 have a parallelepipedal shape complementary to the shape of the wedges 15 and 16, and the wedges 15 and 16 are able to fit into the notches 370.
  • the plane faces 150 and 160 of the shims 15 and 16 form with respect to the median plane Pm an angle of between 30 and 60 degrees.
  • the disassembling operation of the wheel 1 is carried out as follows.
  • the operation is to unscrew the screws 8 flanges 5 and 6 through the heads 80, so as to initiate a translational movement of the clamping members 11 towards the rear of the fastening system 100, as shown by the arrow F1 .
  • the support of the rectilinear faces 150 and 160 against the faces 372, as well as the freedom in translation of the wedges 15 and 16 with respect to the inclined faces 110 and 111 leads to the shims 15 and 16 in translation on the rails 113, as shown by the arrows F2.
  • the screws 8, the rings 13 and the clamping pieces 11 thus form means for moving the shims 15 and 16 between their position engaged in the notches 370 and their position disengaged from the notches 370.
  • the displacement means are integral with the wheel 1 , and disassembly or reassembly operations do not require external means other than a key to obtain the displacement of shims 15 and 16.
  • the heads 80 of the screws 8 form commands for the displacement means of the wedges 15 and 16, operable in a single operation, that is to say using a single type of movement, here a rotation, achievable by a single tool.
  • This allows an operator, or advantageously a robot, to easily obtain the locking of the wheel 1 in the housing 3 by rotating the screws 8, which results in the translation of the wedges 15 and 16.
  • the fastening system 100 is therefore easy to use because it requires only one operation for disassembly or reassembly of the wheel 1.
  • the figure 3 represents the fastening system 100 during the translational movement of the clamping pieces 11 and shims 15 and 16.
  • the translational movement of the wedges 15 and 16 has the effect of sliding the rectilinear faces 150 and 160 against the faces 372 so that that the shims 15 and 16 are partially disengaged from the notches 370.
  • the wedges 15 and 16 therefore undergo a rectilinear translation with respect to the flanges 5 and 6 and to the housing 3. This rectilinear translation is represented by the arrow F4 to figures 3 and 5 .
  • the wedges 15 and 16 In the second position of the clamping pieces 11, the wedges 15 and 16 abut against the rear faces 53 and 63 of the flanges 5 and 6, which makes it possible to limit the translation towards the median plane Pm of the wedges 15 and 16 and the rearward translation of the clamping pieces 11 relative to the flanges 5 and 6.
  • the shims 15 and 16 comprise for this purpose front plane faces 151 and 161 opposite and parallel to the rectilinear faces 150 and 160, able to lean against the faces 53 and 63, as is visible on the Figures 4 to 6 .
  • the tightening of the screws 8 can cause jamming of the wedges 15 and 16 in the notches 370, between the faces 150 and 160 and the faces 372.
  • the unscrewing of the screws 8 makes it possible to cancel this entrapment by inducing a slight displacement of the flanges 5 and 6 forwards, which causes a clearance between the faces 150 and 160 and the faces 372.
  • the relative sliding between these surfaces can thus take place, and the clearance of the wedges 15 and 16 of the notches 370 to proceed normally.
  • a space E extending along the axis X-X ' exists between the rings 13 and the flanges 5 and 6.
  • This space E allows an additional tightening of the screws 8 in case wear or matting shims 15 and 16 or notches 370.
  • This space allows to continue to effectively tighten the shims 15 and 16 in the notches 370 during the life of the fastening system 100.
  • the unlocking of shims 15 and 16 can be obtained by actuating a common control flanges 5 and 6 allowing simultaneous screwing and unscrewing screws 8 of each flange 5 and 6.
  • the system 100 may comprise a screw 8, a nut 13, a clamping piece 11 and shims 15 and 16 on only one of the flanges 5 and 6.
  • the actuation of the displacement means of the locking elements formed by the wedges 15 and 16 can be obtained by a different operation of screwing or unscrewing the screws 8, for example by the actuation of a lever or any other system capable of driving the clamping members 11 in translation by a single operation.
  • the wheel can be replaced by another type of cutting tool, such as a scraper tool called "ripper".
  • This ripper comprises a scraping part, forming the active part of the ripper, mounted in a base itself mounted between the flanges 5 and 6.
  • the scraping portion can be tilting or fixed relative to the base.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Environmental & Geological Engineering (AREA)
  • Earth Drilling (AREA)
  • Milling Processes (AREA)
  • Connection Of Plates (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Clamps And Clips (AREA)

Description

La présente invention concerne un système de fixation d'un outil de coupe sur une tête de coupe d'un tunnelier. L'invention concerne également un tunnelier comprenant une tête de coupe incluant des outils de coupe fixés dans la tête de coupe au moyen de tels systèmes de fixation.The present invention relates to a system for fixing a cutting tool on a cutting head of a tunnel boring machine. The invention also relates to a tunnel boring machine comprising a cutting head including cutting tools fixed in the cutting head by means of such fastening systems.

Les tunneliers comprennent généralement une tête de coupe munie de molettes, qui sont des outils de coupe circulaires tournant autour d'un axe et permettant de poinçonner la roche sous forme de plaques écaillées. Les tunneliers peuvent également comprendre des outils racleurs appelés « rippers ». Une tête de coupe comporte ainsi une pluralité de molettes réparties régulièrement sur sa surface. Chacune des molettes est fixée dans un boîtier sur la tête de coupe le plus souvent par un ensemble de vis, cales et écrous. De tels systèmes de fixation, fabriqués notamment par la société Robbins, comprennent généralement plusieurs éléments détachables tels que des cales permettant de bloquer en position la molette, des vis de verrouillage des cales et éventuellement des écrous de serrage. Ces éléments doivent être démontés un par un par les opérateurs lors du changement des molettes usées. Dans certains de ces systèmes, les cales ne sont solidaires d'aucune autre pièce. Ces manipulations impliquent le démontage et le transfert d'un nombre élevé de pièces indépendantes et perdables, ainsi que des serrages et desserrages impliquant des couples élevés. Ces systèmes doivent être manipulés par au moins un opérateur disposant d'équipements spéciaux. Les risques de chute ou de perte de certains objets rendent longues et peu pratiques les manoeuvres de changement de molettes, qui sont effectuées à l'intérieur des tunneliers dans des conditions difficiles.Tunnel boring machines usually include a cutting head with knobs, which are circular cutting tools that rotate around an axis and punch the rock in the form of flaking plates. Tunneling machines may also include scraper tools called "rippers". A cutting head thus comprises a plurality of wheels distributed regularly on its surface. Each of the knobs is fixed in a housing on the cutting head most often by a set of screws, wedges and nuts. Such fastening systems, manufactured in particular by the company Robbins, generally comprise several detachable elements such as shims for locking in position the wheel, wedge locking screws and possibly clamping nuts. These elements must be disassembled one by one by the operators when changing worn wheels. In some of these systems, the holds are not integral with any other part. These manipulations involve the dismantling and transfer of a large number of independent and lossy parts, as well as tightening and loosening involving high torques. These systems must be handled by at least one operator with special equipment. The risk of falling or loss of certain objects makes it difficult and time-consuming to change the knobs, which are carried out inside tunnel boring machines under difficult conditions.

WO-A-2011/076616 décrit un système de fixation de molette comprenant une baïonnette solidaire de la molette, et mobile en rotation par rapport à un support de la molette, entre une première position, dans laquelle des bords de la baïonnette sont engagés dans des encoches d'un boitier dans laquelle la molette est montée, et une seconde position, dans laquelle la molette peut être extraite du boîtier. Pour verrouiller la fixation de la molette dans le boitier, dans la première position de la baïonnette, une précontrainte est appliquée au moyen de vis insérées dans des trous de la baïonnette. WO-2011/076616 discloses a wheel attachment system comprising a bayonet secured to the wheel, and movable in rotation relative to a support of the wheel, between a first position, in which edges of the bayonet are engaged in notches of a housing in which the wheel is mounted, and a second position, wherein the wheel can be extracted from the housing. To lock the fixing of the wheel in the housing, in the first position of the bayonet, a preload is applied by means of screws inserted in holes of the bayonet.

Lors du démontage de la molette, les vis doivent d'abord être desserrées, puis la baïonnette doit être tournée pour que la molette puisse être extraite. Un tel procédé nécessite donc plusieurs opérations distinctes, notamment le pivotement de la baïonnette, ce qui rend ce procédé complexe.When disassembling the knob, the screws must first be loosened, then the bayonet must be rotated so that the knob can be removed. Such a method therefore requires several distinct operations, including the pivoting of the bayonet, which makes this process complex.

C'est à ces inconvénients qu'entend plus particulièrement remédier l'invention en proposant un nouveau système de fixation d'un outil de coupe sur une tête de coupe d'un tunnelier, permettant le remplacement des outils de coupe de façon plus simple et plus rapide que les systèmes de l'art antérieur.It is these drawbacks that the invention intends to remedy more particularly by proposing a new system for fixing a cutting tool on a cutting head of a tunnel boring machine, making it possible to replace the cutting tools in a simpler way and faster than the systems of the prior art.

A cet effet, l'invention concerne un système de fixation d'un outil de coupe sur une tête de coupe d'un tunnelier, comprenant un boitier solidaire de la tête de coupe, dans lequel l'outil de coupe est inséré, l'outil de coupe comprenant deux flasques entre lesquels est montée une partie active, le système de fixation comprenant également des éléments de verrouillage rétractables liés de manière imperdable aux flasques et adaptés pour verrouiller les flasques dans le boitier, les éléments de verrouillage étant mobiles par rapport aux flasques entre une première position, dans laquelle les éléments de verrouillage sont engagés dans le boitier de manière à verrouiller l'outil de coupe dans le boitier, et une seconde position, dans laquelle les éléments de verrouillage sont dégagés du boitier et permettent l'extraction de l'outil de coupe du boitier, caractérisé en ce qu'il comprend des moyens de déplacement solidaires de l'outil de coupe adaptés pour déplacer les éléments de verrouillage en translation entre leur première position et leur seconde position, et en ce que ces moyens de déplacement sont adaptés pour être actionnés par une seule opération.To this end, the invention relates to a fixing system of a cutting tool on a cutting head of a tunnel boring machine, comprising a housing secured to the cutting head, in which the cutting tool is inserted, the cutting tool comprising two flanges between which is mounted an active part, the fastening system also comprising retractable locking elements captively connected to the flanges and adapted to lock the flanges in the housing, the locking elements being movable relative to the flanges between a first position, wherein the locking elements are engaged in the housing so as to lock the cutting tool in the housing, and a second position, in which the locking elements are disengaged from the housing and allow the extraction of the case cutting tool, characterized in that it comprises moving means integral with the cutting tool adapted for displacement. er translation locking elements between their first position and their second position, and in that these moving means are adapted to be actuated by a single operation.

Grâce à l'invention, l'outil de coupe, tel qu'une molette ou un ripper, est fixé dans le boitier grâce à des éléments de verrouillage dont le déplacement ne nécessite pas d'autres moyens externes au système de fixation qu'une clé. Les opérations de démontage et de remontage des outils de coupe sont donc simples et rapides, et peuvent notamment être exécutées par des robots aptes à contrôler les moyens de déplacement.Thanks to the invention, the cutting tool, such as a wheel or a ripper, is fixed in the housing by means of locking elements whose movement does not require other means external to the fastening system than key. Disassembly and reassembly of the cutting tools are simple and fast, and can in particular be performed by robots able to control the means of travel.

Selon des aspects avantageux mais non obligatoires de l'invention, un tel système peut incorporer une ou plusieurs des caractéristiques suivantes, prises dans toute combinaison techniquement admissible :

  • Les éléments de verrouillage sont des cales aptes à s'insérer dans des encoches du boitier et les cales comprennent des faces planes arrière adaptées pour venir en butée contre des faces parallèles des encoches orientées à l'opposé du mouvement d'extraction de l'outil de coupe du boitier.
  • Les moyens de déplacement des cales comprennent, pour chaque flasque, une vis montée dans un trou taraudé de ce flasque, une pièce de serrage montée coulissante sur chaque vis, une bague montée sur chaque vis et adaptée pour entrainer la pièce de serrage en translation selon un axe longitudinal de la vis, les cales étant montées libres en translation sur chacune des pièces de serrage, alors que la rotation des vis entraîne le déplacement en translation des pièces de serrage entre une première position avant, dans laquelle les cales sont engagées dans les encoches et une seconde position arrière, dans laquelle les cales sont dégagées des encoches.
  • Chacune des vis comprend une tête permettant l'actionnement des moyens de déplacement des cales.
  • Chacune des pièces de serrage comprend deux faces inclinées par rapport à un plan médian du boitier et les cales sont montées libres en translation le long des faces inclinées.
  • Dans la première position des pièces de serrage, un espace existe entre les bagues et les flasques permettant un serrage supplémentaire des vis.
  • Dans la seconde position des cales, des faces avant des cales sont en butée contre des faces arrière des flasques.
  • Dans la seconde position des cales et lorsque l'outil de coupe est inséré dans le boîtier, la distance entre les faces des encoches orientées à l'opposé du mouvement d'extraction de l'outil de coupe du boitier et les faces arrières des flasques est supérieure à la largeur des cales.
  • Chacun des flasques présente deux faces latérales inclinées formant un profil conique adapté pour coopérer avec un relief en creux de forme correspondante ménagé sur une surface interne du boitier dans la première position des éléments de verrouillage.
  • L'outil de coupe est une molette dont la partie tournante forme la partie active de l'outil de coupe.
  • L'outil de coupe est un ripper comprenant une embase montée entre les flasques et une partie raclante fixe ou basculante par rapport à l'embase et formant la partie active de l'outil de coupe.
According to advantageous but non-mandatory aspects of the invention, such a system may incorporate one or more of the following features, taken in any technically permissible combination:
  • The locking elements are shims capable of being inserted into the notches of the housing and the shims comprise rear flat faces adapted to abut against parallel faces of the notches oriented opposite the extraction movement of the tool. cutting the case.
  • The displacement means of the wedges comprise, for each flange, a screw mounted in a threaded hole of this flange, a clamping piece slidably mounted on each screw, a ring mounted on each screw and adapted to drive the clamping piece in translation according to a longitudinal axis of the screw, the shims being mounted free in translation on each of the clamping pieces, while the rotation of the screws causes the translational movement of the clamping parts between a first front position, in which the wedges are engaged in the notches and a second rear position, in which the wedges are clear of the notches.
  • Each of the screws comprises a head for actuating the means for moving the shims.
  • Each clamping piece comprises two faces inclined relative to a median plane of the housing and the shims are mounted free in translation along the inclined faces.
  • In the first position of the clamping pieces, there is a space between the rings and the flanges allowing additional tightening of the screws.
  • In the second position of the shims, the front faces of the shims are in abutment against the rear faces of the flanges.
  • In the second position of the wedges and when the cutting tool is inserted in the housing, the distance between the faces of the notches facing away from the extraction movement of the cutting tool of the housing and the rear faces of the flanges is greater than the width of the holds.
  • Each of the flanges has two inclined lateral faces forming a conical profile adapted to cooperate with a recessed relief of corresponding shape formed on an inner surface of the housing in the first position of the locking elements.
  • The cutting tool is a wheel whose rotating part forms the active part of the cutting tool.
  • The cutting tool is a ripper comprising a base mounted between the flanges and a scraping portion fixed or tilting relative to the base and forming the active portion of the cutting tool.

L'invention concerne également un tunnelier comprenant une tête de coupe incluant des outils de coupe fixés dans la tête de coupe au moyen de systèmes de fixation tels que mentionnés ci-dessus.The invention also relates to a tunnel boring machine comprising a cutting head including cutting tools fixed in the cutting head by means of fixing systems as mentioned above.

L'invention sera mieux comprise et d'autres avantages de celle-ci apparaitront plus clairement à la lumière de la description qui va suivre d'un système de fixation d'une molette et d'un tunnelier conformes à son principe, faite à titre d'exemple non limitatif en référence aux dessins annexés dans lesquels :

  • la figure 1 est une vue de côté d'un système de fixation conforme à l'invention,
  • la figure 2 est une vue en perspective d'un côté arrière du système de fixation de la figure 1, dans une première configuration,
  • les figures 3 et 4 sont des vues similaires à la figure 2, dans une deuxième et une troisième configuration du système de la figure 1,
  • la figure 5 est une vue de dessus du système des figures 1 à 4, dans la configuration de la figure 4.
  • la figure 6 est une vue en perspective, selon un autre angle, d'une molette extraite d'un boîtier appartenant au système de fixation des figures 1 à 5.
The invention will be better understood and other advantages thereof will emerge more clearly in the light of the following description of a fixing system of a wheel and a TBM consistent with its principle, made as a non-limiting example with reference to the accompanying drawings in which:
  • the figure 1 is a side view of a fastening system according to the invention,
  • the figure 2 is a perspective view of a back side of the fastening system of the figure 1 in a first configuration,
  • the figures 3 and 4 are views similar to the figure 2 , in a second and a third configuration of the system of the figure 1 ,
  • the figure 5 is a top view of the system of Figures 1 to 4 , in the configuration of the figure 4 .
  • the figure 6 is a perspective view, from another angle, of a wheel extracted from a casing belonging to the fastening system of Figures 1 to 5 .

La figure 1 représente un système de fixation 100 d'un outil de coupe, formé par une molette 1 dans cet exemple, sur une tête de coupe non représentée d'un tunnelier également non représenté. Le système de fixation 100 comprend un boîtier 3 creux fixement solidaire de la tête de coupe, et dans lequel la molette 1 est insérée. Le boîtier 3 présente une face avant 30, de laquelle la molette 1 fait saillie, et destinée à être en vis-à-vis avec une paroi rocheuse à creuser. Le boîtier 3 comprend une face arrière 32, par laquelle les opérateurs ont accès au système de fixation 100 pour démonter la molette 1 en vue de son remplacement par une molette neuve. Un axe perpendiculaire aux faces avant 30 et arrière 32 définit la direction longitudinale X-X' du système de fixation 100. Dans ce qui suit, les qualificatifs « avant » et « arrière » sont utilisés en référence aux faces avant 30 et arrière 32.The figure 1 represents a fastening system 100 of a cutting tool, formed by a wheel 1 in this example, on a not shown cutting head of a TBM also not shown. The fastening system 100 comprises a hollow housing 3 fixedly secured to the cutting head, and wherein the wheel 1 is inserted. The housing 3 has a front face 30, of which the wheel 1 protrudes, and intended to be vis-à-vis with a rock wall to dig. The housing 3 comprises a rear face 32, by which the operators have access to the fastening system 100 to disassemble the wheel 1 to be replaced by a new wheel. An axis perpendicular to the front 30 and rear faces 32 defines the longitudinal direction XX 'of the fastening system 100. In what follows, the qualifiers "front" and "back" are used with reference to the front 30 and rear 32.

La molette 1 comprend deux flasques 5 et 6, entre lesquels est montée une partie tournante de la molette 1 comprenant un disque de coupe 70. Cette partie tournante forme une partie active de l'outil de coupe, adaptée pour être en contact avec le terrain et le creuser. Les flasques 5 et 6 sont insérés dans des reliefs en creux correspondant 340 et 360 ménagés respectivement dans une paroi supérieure 34 et une paroi inférieure 36 du boîtier 3. Les flasques 5 et 6 présentent chacun deux faces latérales 51 et 61 formant un profil conique dont la forme est complémentaire avec les surfaces des reliefs en creux 340 et 360. Cette complémentarité de forme facilite l'insertion et l'alignement de la molette 1 dans le boitier 3.The wheel 1 comprises two flanges 5 and 6, between which is mounted a rotating part of the wheel 1 comprising a cutting disc 70. This rotating part forms an active part of the cutting tool, adapted to be in contact with the ground and dig it. The flanges 5 and 6 are inserted in corresponding recessed reliefs 340 and 360 formed respectively in an upper wall 34 and a lower wall 36 of the housing 3. The flanges 5 and 6 each have two lateral faces 51 and 61 forming a conical profile of which the shape is complementary with the surfaces of the recessed reliefs 340 and 360. This complementary shape facilitates the insertion and alignment of the wheel 1 in the housing 3.

Le système de fixation 100 comprend en outre deux vis 8 vissées chacune dans un trou taraudé de l'un des flasques 5 et 6. Le démontage de la molette ne nécessite pas de dévisser complètement les vis 8 des flasques 5 et 6 et ainsi, toutes les pièces du système de fixation restent solidaires entre elles et de la molette 1 lors des opérations de démontage et de remontage.The fastening system 100 further comprises two screws 8 each screwed into a threaded hole in one of the flanges 5 and 6. The disassembly of the wheel does not require the screws 8 of the flanges 5 and 6 to be completely unscrewed and thus all the parts of the fastening system remain integral with each other and the wheel 1 during disassembly and reassembly operations.

Les vis 8 sont montées selon des axes longitudinaux parallèles à l'axe X-X'.The screws 8 are mounted along longitudinal axes parallel to the axis X-X '.

Le système de fixation 100 comprend également des pièces de serrage 11. Une pièce de serrage 11 est montée de manière coulissante en translation parallèlement à l'axe X-X' sur chacune des vis 8. Les pièces de serrage 11 ont une forme globalement triangulaire symétrique par rapport aux axes des vis 8. Une bague 13 est vissée sur chacune des vis 8. Les vis 8 et les bagues 13 sont solidaires en translation selon l'axe X-X'. Une tête 80 de la vis 8 est accessible du côté arrière de chacune des pièces de serrage 11 de manière à former une commande actionnable par un opérateur ou un robot réalisant le démontage de la molette 1.The fastening system 100 also comprises clamping members 11. A clamping piece 11 is slidably mounted in translation parallel to the axis XX 'on each of the screws 8. The clamping pieces 11 have a generally triangular symmetrical with respect to the axes of the screws 8. A ring 13 is screwed on each of the screws 8. The screws 8 and the rings 13 are integral in translation along the axis X-X '. A head 80 of the screw 8 is accessible from the rear side of each of the clamping pieces 11 so as to form a control operable by an operator or a robot performing the disassembly of the wheel 1.

Les pièces de serrage 11 sont captives des vis 8 entre les bagues 13 et les têtes 80, de sorte que lors du vissage des vis 8, les pièces de serrage 11 sont entrainées en translation vers l'avant par la tête 80. Lors du dévissage des vis 8, les pièces de serrage 11 sont entrainées en translation vers l'arrière par les bagues 13.The clamping pieces 11 are captive of the screws 8 between the rings 13 and the heads 80, so that when the screws 8 are screwed, the clamping pieces 11 are driven in translation towards the front by the head 80. When unscrewing screws 8, the clamping pieces 11 are driven in translation backwards by the rings 13.

Sur chacune des pièces de serrage 11 sont montées deux cales 15 et 16. Les cales 15 et 16 sont montées sur les pièces de serrage 11 en liaison glissière sur des faces inclinées 110 et 111 par rapport à l'axe longitudinal des vis 8, les cales 15 et 16 étant libres en translation le long des faces inclinées 110 et 111. Les cales 15 et 16 ont une forme globalement parallélépipédique. La liaison glissière entre les cales 15 et 16 et les faces inclinées 110 et 111 est réalisée par le glissement entre des rails 113 des faces inclinées 110 et 111 et des rainures prévues dans les cales 15 et 16 dont la forme est complémentaire de celle des rails 113.On each of the clamping pieces 11 are mounted two wedges 15 and 16. The wedges 15 and 16 are mounted on the clamping pieces 11 in sliding connection on inclined faces 110 and 111 with respect to the longitudinal axis of the screws 8, the shims 15 and 16 being free in translation along the inclined faces 110 and 111. The wedges 15 and 16 have a generally parallelepiped shape. The slide connection between the wedges 15 and 16 and the inclined faces 110 and 111 is formed by the sliding between rails 113 of the inclined faces 110 and 111 and grooves provided in the wedges 15 and 16 whose shape is complementary to that of the rails 113.

Lors de l'extraction de la molette 1, celle-ci forme un seul bloc avec les vis 8, les pièces de serrage 11, les bagues 13 et les cales 15 et 16. Aucune de ces pièces ne nécessite d'être désolidarisée, ce qui simplifie l'extraction de la molette 1 et évite les risques de perte.When the wheel 1 is extracted, it forms a single block with the screws 8, the clamping pieces 11, the rings 13 and the shims 15 and 16. None of these parts need to be disconnected. which simplifies the extraction of wheel 1 and avoids the risk of loss.

Les reliefs en creux 340 et 360 comprennent des encoches latérales 370 symétriques par rapport à un plan médian Pm du boîtier 3, passant par l'axe X-X', perpendiculaire aux parois 34 et 36 et aux faces 30 et 32. Les encoches 370 ont une forme parallélépipédique complémentaire de la forme des cales 15 et 16, et les cales 15 et 16 sont aptes à s'insérer dans les encoches 370. Dans une première configuration de verrouillage du système de fixation 100, représentée aux figures 1 et 2, dans laquelle la partie tournante 70 de la molette 1 fait saillie de la tête de coupe du tunnelier pour détruire la roche, les pièces de serrage 11 sont dans une première position avant, dans laquelle les cales 15 et 16 sont engagées dans les encoches 370 de manière à verrouiller la molette 1 dans le boîtier 3. Dans cette configuration, des faces planes arrière 150 et 160 des cales 15 et 16, orientées vers l'arrière du système de fixation 100, sont en contact avec des faces parallèles 372 des encoches 370, orientées vers l'avant du système de fixation 100, à l'opposé de la face arrière 32 du boîtier 3. Les faces 372 s'opposent donc au mouvement d'extraction de la molette 1 du boitier 3. Ainsi, grâce à la coopération des faces 150 et 160 et des faces 372, les pièces de serrage 11 ne peuvent être retirées vers l'arrière du boîtier 3, et la molette 1 est donc verrouillée dans le boîtier 3. Les cales 15 et 16 forment donc des éléments de verrouillage rétractables des flasques 5 et 6 dans le boitier 3.The recessed reliefs 340 and 360 comprise lateral notches 370 symmetrical with respect to a median plane Pm of the casing 3, passing through the axis X-X ', perpendicular to the walls 34 and 36 and to the faces 30 and 32. The notches 370 have a parallelepipedal shape complementary to the shape of the wedges 15 and 16, and the wedges 15 and 16 are able to fit into the notches 370. In a first locking configuration of the fastening system 100, shown in FIGS. figures 1 and 2 , in which the rotating part 70 of the wheel 1 protrudes from the tunneling cutter head to destroy the rock, the clamping pieces 11 are in a first forward position, in which the wedges 15 and 16 are engaged in the notches 370 so as to lock the wheel 1 in the housing 3. In this configuration, rear plane faces 150 and 160 of the shims 15 and 16, facing the rear of the fastening system 100, are in contact with parallel faces 372 of the notches 370, facing the front of the fastening system 100, opposite the rear face 32 of the housing 3. The faces 372 therefore oppose the extraction movement of the wheel 1 of the housing 3. Thus, thanks to cooperation of 150 and 160 faces and faces 372, the clamping parts 11 can not be removed towards the rear of the housing 3, and the wheel 1 is locked in the housing 3. The wedges 15 and 16 therefore form retractable locking elements flanges 5 and 6 in the housing 3.

Les faces planes 150 et 160 des cales 15 et 16 forment par rapport au plan médian Pm un angle compris entre 30 et 60 degrés.The plane faces 150 and 160 of the shims 15 and 16 form with respect to the median plane Pm an angle of between 30 and 60 degrees.

La manoeuvre de démontage de la molette 1 se déroule de la façon suivante. L'opération consiste à dévisser les vis 8 des flasques 5 et 6 grâce aux têtes 80, de manière à initier un mouvement de translation des pièces de serrage 11 vers l'arrière du système de fixation 100, comme cela est représenté par la flèche F1. Au cours de la translation vers l'arrière des pièces de serrage 11, l'appui des faces rectilignes 150 et 160 contre les faces 372, ainsi que la liberté en translation des cales 15 et 16 par rapport aux faces inclinées 110 et 111, entraine les cales 15 et 16 en translation sur les rails 113, comme cela est représenté par les flèches F2. Les vis 8, les bagues 13 et les pièces de serrage 11 forment donc des moyens de déplacement des cales 15 et 16 entre leur position engagée dans les encoches 370 et leur position dégagée des encoches 370. Les moyens de déplacement sont solidaires de la molette 1, et les opérations de démontage ou de remontage ne nécessitent pas de moyens externes autres qu'une clé pour obtenir le déplacement des cales 15 et 16.The disassembling operation of the wheel 1 is carried out as follows. The operation is to unscrew the screws 8 flanges 5 and 6 through the heads 80, so as to initiate a translational movement of the clamping members 11 towards the rear of the fastening system 100, as shown by the arrow F1 . During the translation towards the rear of the clamping pieces 11, the support of the rectilinear faces 150 and 160 against the faces 372, as well as the freedom in translation of the wedges 15 and 16 with respect to the inclined faces 110 and 111, leads to the shims 15 and 16 in translation on the rails 113, as shown by the arrows F2. The screws 8, the rings 13 and the clamping pieces 11 thus form means for moving the shims 15 and 16 between their position engaged in the notches 370 and their position disengaged from the notches 370. The displacement means are integral with the wheel 1 , and disassembly or reassembly operations do not require external means other than a key to obtain the displacement of shims 15 and 16.

Les têtes 80 des vis 8 forment des commandes des moyens de déplacement des cales 15 et 16, actionnables en une seule opération, c'est-à-dire en utilisant un seul type de mouvement, ici une rotation, réalisable par un seul outil. Cela permet à un opérateur, ou avantageusement à un robot, de facilement obtenir le verrouillage de la molette 1 dans le boitier 3 en imprimant une rotation aux vis 8, qui se traduit par la translation des cales 15 et 16. Le système de fixation 100 est donc simple d'utilisation car il ne nécessite qu'une seule opération pour le démontage ou le remontage de la molette 1.The heads 80 of the screws 8 form commands for the displacement means of the wedges 15 and 16, operable in a single operation, that is to say using a single type of movement, here a rotation, achievable by a single tool. This allows an operator, or advantageously a robot, to easily obtain the locking of the wheel 1 in the housing 3 by rotating the screws 8, which results in the translation of the wedges 15 and 16. The fastening system 100 is therefore easy to use because it requires only one operation for disassembly or reassembly of the wheel 1.

La figure 3 représente le système de fixation 100 au cours du mouvement de translation des pièces de serrage 11 et des cales 15 et 16. Le mouvement de translation des cales 15 et 16 a pour effet le glissement des faces rectilignes 150 et 160 contre les faces 372 de manière que les cales 15 et 16 sont partiellement désengagées des encoches 370.The figure 3 represents the fastening system 100 during the translational movement of the clamping pieces 11 and shims 15 and 16. The translational movement of the wedges 15 and 16 has the effect of sliding the rectilinear faces 150 and 160 against the faces 372 so that that the shims 15 and 16 are partially disengaged from the notches 370.

Les cales 15 et 16 subissent par conséquent une translation rectiligne par rapport aux flasques 5 et 6 et au boitier 3. Cette translation rectiligne est représentée par la flèche F4 aux figures 3 et 5.The wedges 15 and 16 therefore undergo a rectilinear translation with respect to the flanges 5 and 6 and to the housing 3. This rectilinear translation is represented by the arrow F4 to figures 3 and 5 .

Le mouvement de translation vers l'arrière des pièces de serrage 11 se poursuit jusqu'à une position arrière des pièces de serrage 11, représentée aux figures 4 à 6. Dans cette configuration, les cales 15 et 16 ont poursuivi leur mouvement de translation selon les flèches F2 jusqu'à qu'elles soient complètement dégagées des encoches 370. Comme cela est visible à la figure 4, les cales 15 et 16 sont à présent dans une position rapprochée par rapport au plan médian Pm, de manière que les faces rectilignes 150 et 160 ne coopèrent plus avec les faces 372. Il est donc possible d'extraire la molette 1 du boîtier 3 en exerçant une traction vers l'arrière sur toute partie de la molette selon la flèche F3, car les faces 372 ne font plus obstacle aux faces 150 et 160 selon l'axe X-X'.The translational movement towards the rear of the clamping pieces 11 continues to a rear position of the clamping pieces 11, shown in FIGS. Figures 4 to 6 . In this configuration, the wedges 15 and 16 have continued their translational movement according to the arrows F2 until they are completely clear of the notches 370. As can be seen in FIG. figure 4 the wedges 15 and 16 are now in a position close to the median plane Pm, so that the rectilinear faces 150 and 160 no longer cooperate with the faces 372. It is therefore possible to extract the wheel 1 from the housing 3 by pulling back on any part of the wheel according to the arrow F3, because the faces 372 no longer block the faces 150 and 160 along the axis X-X '.

Dans la seconde position des pièces de serrage 11, les cales 15 et 16 sont en butée contre des faces arrières 53 et 63 des flasques 5 et 6, ce qui permet de limiter la translation vers le plan médian Pm des cales 15 et 16 et la translation vers l'arrière des pièces de serrage 11 par rapport aux flasques 5 et 6. Les cales 15 et 16 comprennent à cet effet des faces planes avant 151 et 161 opposées et parallèles aux faces rectilignes 150 et 160, aptes à s'appuyer contre les faces 53 et 63, comme cela est visible sur les figures 4 à 6. Lorsque la molette 1 est extraite du boîtier 3, la désolidarisation des cales 15 et 16 des pièces de serrage 11, par coulissement sur les rails 113 vers l'arrière, est empêchée par des butées 115, visibles aux figures 5 et 6, formées sur les pièces de serrage 11.In the second position of the clamping pieces 11, the wedges 15 and 16 abut against the rear faces 53 and 63 of the flanges 5 and 6, which makes it possible to limit the translation towards the median plane Pm of the wedges 15 and 16 and the rearward translation of the clamping pieces 11 relative to the flanges 5 and 6. The shims 15 and 16 comprise for this purpose front plane faces 151 and 161 opposite and parallel to the rectilinear faces 150 and 160, able to lean against the faces 53 and 63, as is visible on the Figures 4 to 6 . When the wheel 1 is extracted from the housing 3, the separation of the wedges 15 and 16 of the clamping pieces 11, by sliding on the rails 113 towards the rear, is prevented by abutments 115, visible to the figures 5 and 6 formed on the clamping pieces 11.

Le montage des pièces de serrage 11, des cales 15 et 16 et des bagues 13 de manière captive sur les vis 8 ainsi que le fait que les cales 15 et 16 sont dégagées des encoches 370, alors que les vis 8 restent engagées dans les flasques 5 et 6, assure l'imperdabilité des pièces du système de fixation 100 par rapport aux flasques 5 et 6. La fiabilité du système de fixation 100 est donc garantie, en réduisant les risques de perte d'éléments au cours de l'extraction de la molette 1.The mounting of the clamping pieces 11, shims 15 and 16 and rings 13 captively on the screws 8 and the fact that the shims 15 and 16 are disengaged from the notches 370, while the screws 8 remain engaged in the flanges 5 and 6, ensures the capability of the parts of the fastening system 100 relative to the flanges 5 and 6. The reliability of the fastening system 100 is guaranteed, reducing the risk of loss of elements during the extraction of the wheel 1.

Le serrage des vis 8 peut provoquer un coincement des cales 15 et 16 dans les encoches 370, entre les faces 150 et 160 et les faces 372. Lors des opérations de déverrouillage de la molette 1, le dévissage des vis 8 permet d'annuler ce coincement en induisant un léger déplacement des flasques 5 et 6 vers l'avant, ce qui provoque un jeu entre les faces 150 et 160 et les faces 372. Le glissement relatif entre ces surfaces peut ainsi avoir lieu, et le dégagement des cales 15 et 16 des encoches 370 se dérouler normalement.The tightening of the screws 8 can cause jamming of the wedges 15 and 16 in the notches 370, between the faces 150 and 160 and the faces 372. During the unlocking operations of the wheel 1, the unscrewing of the screws 8 makes it possible to cancel this entrapment by inducing a slight displacement of the flanges 5 and 6 forwards, which causes a clearance between the faces 150 and 160 and the faces 372. The relative sliding between these surfaces can thus take place, and the clearance of the wedges 15 and 16 of the notches 370 to proceed normally.

Lorsqu'une nouvelle molette 1 doit être montée dans le boîtier 3, elle est insérée dans le boîtier jusqu'à ce que les faces latérales 51 et 61 de chacun des flasques 5 et 6 soient engagées contre les reliefs en creux 340 et 360 du boîtier 3, comme cela est représenté à la figure 5. Dans cette configuration, la distance D1 entre les faces 53 et les faces 372, prise selon une direction perpendiculaire à ces faces, est supérieure à la largeur L des cales 15 et 16, prise respectivement entre les faces 150 et 151 et entre les faces 160 et 161. Cela permet que lorsque les vis 8 sont vissées dans les flasques 5 et 6 en sens inverse du processus d'extraction, les cales 15 et 16 soient correctement réengagées dans les encoches 370.When a new wheel 1 is to be mounted in the housing 3, it is inserted into the housing until the side faces 51 and 61 of each of the flanges 5 and 6 are engaged against the recessed reliefs 340 and 360 of the housing. 3, as is represented at figure 5 . In this configuration, the distance D1 between the faces 53 and the faces 372, taken in a direction perpendicular to these faces, is greater than the width L of the wedges 15 and 16, taken respectively between the faces 150 and 151 and between the faces 160 and 161. This allows that when the screws 8 are screwed into the flanges 5 and 6 in the opposite direction of the extraction process, the wedges 15 and 16 are properly reengaged in the notches 370.

Dans la première position des pièces de serrage 11, un espace E, s'étendant selon l'axe X-X', existe entre les bagues 13 et les flasques 5 et 6. Cet espace E permet un serrage supplémentaire des vis 8 en cas d'usure ou de matage des cales 15 et 16 ou des encoches 370. Cet espace permet de pouvoir continuer à serrer efficacement les cales 15 et 16 dans les encoches 370 au cours de la durée de vie du système de fixation 100.In the first position of the clamping pieces 11, a space E extending along the axis X-X 'exists between the rings 13 and the flanges 5 and 6. This space E allows an additional tightening of the screws 8 in case wear or matting shims 15 and 16 or notches 370. This space allows to continue to effectively tighten the shims 15 and 16 in the notches 370 during the life of the fastening system 100.

Selon un mode de réalisation non représenté, le déverrouillage des cales 15 et 16 peut être obtenu en actionnant une commande commune aux flasques 5 et 6 permettant un vissage et dévissage simultané des vis 8 de chaque flasque 5 et 6.According to an embodiment not shown, the unlocking of shims 15 and 16 can be obtained by actuating a common control flanges 5 and 6 allowing simultaneous screwing and unscrewing screws 8 of each flange 5 and 6.

Selon un autre mode de réalisation non représenté, le système 100 peut comprendre une vis 8, un écrou 13, une pièce de serrage 11 et des cales 15 et 16 sur un seul des flasques 5 et 6.According to another embodiment not shown, the system 100 may comprise a screw 8, a nut 13, a clamping piece 11 and shims 15 and 16 on only one of the flanges 5 and 6.

Selon un autre mode de réalisation non représenté de l'invention, l'actionnement des moyens de déplacement des éléments de verrouillage formés par les cales 15 et 16 peut être obtenu par une opération différente du vissage ou du dévissage des vis 8, par exemple par l'actionnement d'un levier ou de tout autre système apte à entrainer les pièces de serrage 11 en translation par une seule opération.According to another embodiment not shown of the invention, the actuation of the displacement means of the locking elements formed by the wedges 15 and 16 can be obtained by a different operation of screwing or unscrewing the screws 8, for example by the actuation of a lever or any other system capable of driving the clamping members 11 in translation by a single operation.

Selon un autre mode de réalisation non représenté de l'invention, la molette peut être remplacée par un autre type d'outil de coupe, tel qu'un outil racleur appelé « ripper ». Ce ripper comprend une partie raclante, formant la partie active du ripper, montée dans une embase elle-même montée entre les flasques 5 et 6. La partie raclante peut être basculante ou fixe par rapport à l'embase.According to another embodiment not shown of the invention, the wheel can be replaced by another type of cutting tool, such as a scraper tool called "ripper". This ripper comprises a scraping part, forming the active part of the ripper, mounted in a base itself mounted between the flanges 5 and 6. The scraping portion can be tilting or fixed relative to the base.

Les caractéristiques techniques des modes de réalisation et variantes décrits ci-dessus peuvent être combinées pour former de nouveaux modes de réalisation de l'invention.The technical features of the embodiments and variants described above may be combined to form new embodiments of the invention.

Claims (12)

  1. A system (100) for fastening a cutting tool (1) on a cutting head of a tunnel boring machine, comprising a housing (3) secured to the cutting head, in which the cutting tool (1) is inserted, the cutting tool (1) comprising two flanges (5, 6) between which an active part (70) is mounted, the fastening system (100) also comprising retractable locking elements (15, 16) captively connected to the flanges (5, 6) and suitable for locking the flanges (5, 6) in the housing (3), the locking elements (15, 16) being movable relative to the flanges (5, 6) between a first position, in which the locking elements (15, 16) are engaged in the housing (3) so as to lock the cutting tool (1) in the housing (3), and a second position, in which the locking elements (15, 16) are freed from the housing (3) and allow the cutting tool (1) to be removed from the housing (3), characterized in that it comprises movement means (8, 11, 13) connected to the cutting tool (1) suitable for translating the locking elements (15, 16) between their first position and their second position, and in that those movement means (8, 11, 13) are suitable for being actuated in a single operation.
  2. The system according to claim 1, characterized in that the locking elements are wedges (15, 16) able to be inserted in notches (370) of the housing (3) and in that the wedges (15, 16) comprise planar rear faces (150, 160) suitable for abutting against parallel faces (372) of the notches (370) oriented opposite the removal movement (F3) of the cutting tool (1) from the housing (3).
  3. The system according to claim 2, characterized in that the movement means of the wedges (15, 16) comprise, for each flange (5, 6), a screw (8) mounted in a tapped hole of that flange (5, 6), a tightening part (11) mounted sliding on each screw (8), a ring (13) mounted on each screw (8) and suitable for translating the tightening part (11) along a longitudinal axis (X-X') of the screw (8), the wedges (15, 16) being mounted freely translating on each of the tightening parts (11), and in that the rotation of the screws (8) causes the translational movement (F1) of the tightening parts (11) between a first forward position, in which the wedges (15, 16) are engaged in the notches (370), and a second rear position, in which the wedges (15, 16) are freed from the notches (370).
  4. The fastening system according to claim 3, characterized in that each of the screws (8) comprises a head (80) allowing the actuation of the movement means (8, 11, 13) of the wedges (15, 16).
  5. The fastening system according to one of claims 3 and 4, characterized in that each of the tightening parts (11) comprises two inclined faces (110, 111) relative to a median plane (Pm) of the housing (3) and in that the wedges (15, 16) are mounted freely translating along the inclined faces (110, 111).
  6. The fastening system according to one of claims 3 to 5, characterized in that in the first position of the tightening parts (11), a space (E) exists between the rings (13) and the flanges (5, 6) allowing additional tightening of the screws (8).
  7. The fastening system according to one of claims 3 to 6, characterized in that in the second position of the wedges (15, 16), front faces (151, 161) of the wedges (15, 16) are abutting against rear faces (53, 63) of the flanges (5, 6).
  8. The fastening system according to claim 7, characterized in that in the second position of the wedges (15, 16) and when the cutting tool (1) is inserted in the housing (3), the distance (D1) between the faces (372) of the notches (370) oriented opposite the removal movement (F3) of the cutting tool (1) from the housing (3) and the rear faces (53, 63) of the flanges (5, 6) is greater than the width (L) of the wedges (15, 16).
  9. The fastening system according to one of the preceding claims, characterized in that each of the flanges (5, 6) has two lateral inclined faces (51, 61) forming a conical profile suitable for cooperating with a hollow portion (340, 360) with a corresponding shape arranged on an inner surface of the housing (3) in the first position of the locking elements (15, 16).
  10. The fastening system according to one of the preceding claims, characterized in that the cutting tool is a disc cutter (1) whereof the rotating part (70) forms the active part of the cutting tool.
  11. The fastening system according to one of claims 1 to 9, characterized in that the cutting tool is a ripper comprising a base mounted between the flanges and a scraping part that is stationary or tilts relative to the base and forming the active part of the cutting tool.
  12. A tunnel boring machine comprising a cutting head (1) including cutting tools fastened in the cutting head using fastening systems (100) according to one of the preceding claims.
EP15189964.8A 2014-10-16 2015-10-15 System for attaching a cutting tool to a cutting head of a tunnel-boring machine and tunnel-boring machine comprising such an attachment system Not-in-force EP3012403B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15189964T PL3012403T3 (en) 2014-10-16 2015-10-15 System for attaching a cutting tool to a cutting head of a tunnel-boring machine and tunnel-boring machine comprising such an attachment system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1459948A FR3027337A1 (en) 2014-10-16 2014-10-16 SYSTEM FOR FASTENING A WHEEL ON A TUNNELING CUTTING HEAD AND TUNNELIER COMPRISING SUCH A FIXING SYSTEM

Publications (2)

Publication Number Publication Date
EP3012403A1 EP3012403A1 (en) 2016-04-27
EP3012403B1 true EP3012403B1 (en) 2017-12-06

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Application Number Title Priority Date Filing Date
EP15189964.8A Not-in-force EP3012403B1 (en) 2014-10-16 2015-10-15 System for attaching a cutting tool to a cutting head of a tunnel-boring machine and tunnel-boring machine comprising such an attachment system

Country Status (10)

Country Link
EP (1) EP3012403B1 (en)
AU (1) AU2015238845B2 (en)
DK (1) DK3012403T3 (en)
ES (1) ES2661960T3 (en)
FR (1) FR3027337A1 (en)
HK (1) HK1218147A1 (en)
NO (1) NO3012403T3 (en)
PL (1) PL3012403T3 (en)
SG (1) SG10201508227QA (en)
TR (1) TR201802862T4 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10480318B2 (en) * 2017-05-18 2019-11-19 The Robbins Company Cutter housing with inline mounting
CN110080788A (en) * 2019-06-06 2019-08-02 中国铁建重工集团股份有限公司 A kind of shield machine roller cutter girff device
DE102019123630B3 (en) * 2019-09-04 2020-08-13 Herrenknecht Aktiengesellschaft Device for holding a cutting roller, cutting wheel with a device for holding a cutting roller and tunnel boring machine with a cutting wheel having a device for holding a cutting roller

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU523508B2 (en) * 1979-08-07 1982-07-29 Robbins Company, The Roller cutter mounts
AT399750B (en) * 1993-06-22 1995-07-25 Voest Alpine Bergtechnik DEVICE FOR FASTENING DISKS OF A TUNNEL DRIVING MACHINE
US5577565A (en) * 1995-06-29 1996-11-26 Boretec, Inc. Compact roller cutter
US9429016B2 (en) * 2009-12-22 2016-08-30 Bouygues Travaux Publics Method for replacing a tunnel boring machine roller cutter, handling device and roller cutter suited to such a method
DE102011114830B3 (en) * 2011-10-05 2013-03-07 Herrenknecht Ag Apparatus for monitoring the rotational condition of a cutting roller assembly of a shield tunneling machine and cutting roller assembly for a shield tunneling machine
FR3012843B1 (en) * 2013-11-04 2018-10-26 Bouygues Travaux Publics CUTTING TOOL HOLDER FOR TUNNELIER AND ASSOCIATED CUTTING ASSEMBLY

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
SG10201508227QA (en) 2016-05-30
AU2015238845A1 (en) 2016-05-19
NO3012403T3 (en) 2018-05-05
DK3012403T3 (en) 2018-03-05
TR201802862T4 (en) 2018-03-21
FR3027337A1 (en) 2016-04-22
ES2661960T3 (en) 2018-04-04
HK1218147A1 (en) 2017-02-03
EP3012403A1 (en) 2016-04-27
AU2015238845B2 (en) 2016-10-13
PL3012403T3 (en) 2018-06-29

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