EP1907167A1 - Device for centering and clamping tubular parts - Google Patents

Device for centering and clamping tubular parts

Info

Publication number
EP1907167A1
EP1907167A1 EP06778617A EP06778617A EP1907167A1 EP 1907167 A1 EP1907167 A1 EP 1907167A1 EP 06778617 A EP06778617 A EP 06778617A EP 06778617 A EP06778617 A EP 06778617A EP 1907167 A1 EP1907167 A1 EP 1907167A1
Authority
EP
European Patent Office
Prior art keywords
clamping
cylinder
centering
axis
pads
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.)
Withdrawn
Application number
EP06778617A
Other languages
German (de)
French (fr)
Inventor
Gilles Richard
Jean-François Le Grand Large DAGENAIS
Denis Destouches
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Serimax SAS
Original Assignee
Serimax SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Serimax SAS filed Critical Serimax SAS
Publication of EP1907167A1 publication Critical patent/EP1907167A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
    • B23K37/0531—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor internal pipe alignment clamps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/06—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups

Definitions

  • the present invention relates to a device for centering and clamping tubular parts such as metal ducts, placed concentrically end to end to be welded to form pipelined metal ducts.
  • a device of this type is conventionally constituted by an elongate cylinder which carries clamping means, such as clamping pads, arranged over its entire periphery and arranged to move radially projecting from said cylinder to bear on the pipe walls to be clamped, said device also comprising motorization means allowing it to move inside the ducts once the welding performed and the pads retracted.
  • clamping means such as clamping pads
  • the current devices generally have for each set of clamping pads, a central piston which pushes a solid piece in which are inserted pins rods pushing rods which then push pins driving pistons carrying the clamping pads in radial guides for radially projecting the clamping pads in order to press them against the inner skin of the ducts to be assembled.
  • Such a device has many drawbacks such as shear weakness at the axes located at each end of the rods, the need to provide a central piece diameter conduit and a limited thrust of the piston to about 10 tons.
  • the axes are fixedly held in forgings or machined in the mass so that when there is deformation of an axis support and need to change it, we must change the whole.
  • Such devices are in particular described in US Pat. Nos. 4,253,599, WO 00/00322 and US 5,288,005.
  • US 4,582,241 discloses a clamping and centering device for tubular conduits to be welded end to end in which the drive means consist of a piston connected by a cylinder sleeve sliding on a shaft, this sleeve comprising housings at its periphery forming seats for hinge pins with ball or round head forming the connection to radially arranged shafts bearing the clamping pads.
  • the trees also have spherical seats, the end of the hinge pin being spherical or circular.
  • Such a device may possibly make it possible to avoid shearing forces on the axes for holding the articulation rods, however it requires articulation rods that are machined in a very specific manner, the parts forming a seat for said rods being also of a specific conformation. Such a device is therefore a relatively complex and therefore expensive.
  • the object of the present invention is to propose a device for centering and clamping tubular parts such as ducts intended to form pipelines of the pipeline type, of the type consisting of an elongate cylinder which notably contains means clamping devices, such as at least one series of clamping pads, arranged over its entire periphery and arranged to move radially projecting from said cylinder to bear against the walls of the ducts to be clamped as well as drive means in displacement of each series of clamping pads between a position protruding from the cylinder and a position where they are erased in the cylinder, characterized in that said drive means consist of a drive member releasably connected to a plate which carries a plurality of support pieces on each of which is pivotally mounted about an axis the first end of a bie It has the shape of a ball joint, the second end of the link being also pivotally mounted about an axis, at the a ball joint in a second support piece carrying a clamping
  • the links of the device according to the invention work only in compression which allows to generate a thrust force of up to 60 tons.
  • the pins used to mount a rod in the support pieces play no role in the thrust force, which advantageously limits their wear, but have a reminder function of the support pieces.
  • it is simple rod design, not requiring a particular conformation unlike the hinge pins of the state of the art and therefore economic.
  • Each support piece has a seat in which is pivotally housed the end of a link.
  • Each support piece, each seat and each drive member such as a piston are the same regardless of the diameters.
  • the set of support pieces, rods and bearing pieces carrying the pads has greasing means in situ.
  • the device comprises a hollow shaft at its center defining the central axis of the device and conferring the rigidity of the device while allowing the transport of all cables and hoses.
  • the device according to the invention thus makes it possible to obtain an improved transmission of effort, while presenting wearing parts that are easily removable, which greatly facilitates maintenance and repairs, unlike the previous devices.
  • the centering and clamping device according to the invention may be of the type equipped with a support batten holding the melt or without a support batten or may even be of the type provided with a welding member making a pass through the inside.
  • the device according to the invention further comprises at least two centering members separate clamping pads and constituted respectively of at least one inflatable element, fixable on the periphery of the elongate cylinder.
  • the centering and clamping device according to the invention shown in the single figure consists of an elongated cylinder 1 which contains in particular clamping means for clamping conduits to align in which said device is engaged.
  • clamping means are constituted by at least one series of clamping pads 2, arranged over the entire periphery of the cylinder 1 and arranged to move radially projecting from said cylinder 1 to bear against the walls of the ducts to be clamped.
  • Displacement drive means of each series of clamping pads are provided for driving said pads between the projecting position of the cylinder 1 and the position where they are erased in the cylinder 1.
  • These drive means consist of a drive member 3 such as a pneumatic or hydraulic piston detachably connected to a plate 4.
  • This circular plate 4 carries at its periphery a plurality of support parts 5 on each of which is pivotally mounted about an axis x the first end of a rod 6 in the manner of a ball joint.
  • the second end of the rod 6 is also pivotally mounted about an axis y, in the manner of a ball joint in a second support piece, also called piston 7 carrying a clamping pad 2, the sliding drive of the driving member 3 in a longitudinal direction of the cylinder 1 causing pivoting of the first end of the rods 6 while the pivoting resulting from the second end of the rods 6 causes the radial displacement of the associated clamping shoe 2.
  • greasing means are provided in situ for the rods 6.
  • the clamping means as described can also be used for centering the ducts, but it is also possible to provide other centering means such as elements fixed to the periphery of the cylinder 1 and inflatable.
  • a succession of trays can be provided on the same thrust axis, therefore of pneumatic or hydraulic chambers, to increase the plating force with a single basic pressure.
  • the device according to the invention has a central hollow shaft 8 allowing in particular to pass all the cables, wires and hoses of the device as well as those belonging to assemblies located at the rear of the device such as an internal inspection tool.

Abstract

The invention concerns a device for centering and clamping tubular parts such as conduits designed to form pipeline pipes of the type consisting of an elongated cylinder (1) comprising in particular clamping means, such as at least clamping shoes (2) arranged over its entire periphery and adapted to be radially mobile projecting from said cylinder (1) to be urged to press against the walls of the conduits to be clamped as well as means for moving each of the series of clamping shoes (2) between a position projecting from the cylinder (1) and a position wherein they are retracted into the cylinder (1). The invention is characterized in that said driving means consist of a driving member (3) removably connected to a plate (4) which bears a plurality of support components (5) on each of which is mounted pivoting about an axis of the first end of a link rod (6) in the manner of a swivel joint, the second end of the link rod (6) being likewise mounted pivoting about an axis, in the manner of a swivel joint in a second support component bearing a centering shoe (2), the sliding driving movement of the driving member (3) in a longitudinal direction of the cylinder (1) causing the first end of the link rods (6) to pivot while the resulting pivoting movement of the second end of the link rods (6) causes the radial displacement of the associated clamping shoes (2). The invention is applicable to the construction of piping systems.

Description

Dispositif de centrage et de serrage de pièces tubulaires Centering and clamping device for tubular parts
La présente invention concerne un dispositif de centrage et de serrage de pièces tubulaires telles que des conduits métalliques, mis en place bout à bout concentriquement pour être soudés pour former des canalisations métalliques du type pipeline.The present invention relates to a device for centering and clamping tubular parts such as metal ducts, placed concentrically end to end to be welded to form pipelined metal ducts.
Lors du soudage de ces conduits, il est indispensable que les axes desdits conduits soient correctement alignés et que les conduits alignés soient maintenus pendant le soudage. En effet, en cas de mauvais alignement des axes, le joint d'assemblage entre les conduits est alors irrégulier, ce qui du point de vue de la qualité du soudage réalisé, peut conduire à la création de défauts. Un dispositif de centrage et de serrage permet donc d'aligner les conduits en vue de leur soudage et de maintenir cet alignement pendant le soudage. De tels dispositifs sont en particulier décrits dans EP1123774,When welding these ducts, it is essential that the axes of said ducts are properly aligned and that the aligned ducts are maintained during welding. Indeed, in case of misalignment of the axes, the joint between the ducts is then irregular, which from the point of view of the quality of the welding performed, can lead to the creation of defects. A centering and clamping device thus makes it possible to align the conduits with a view to their welding and to maintain this alignment during welding. Such devices are in particular described in EP1123774,
EP076719.EP076719.
Un dispositif de ce type est constitué de manière classique d'un cylindre allongé qui porte des moyens de serrage, tels que des patins de serrage, disposés sur toute sa périphérie et agencés pour se déplacer radialement en saillie dudit cylindre pour venir en appui sur les parois des conduits à serrer, ledit dispositif comportant également des moyens de motorisation lui permettant de se déplacer à l'intérieur des conduits une fois le soudage réalisé et les patins rétractés.A device of this type is conventionally constituted by an elongate cylinder which carries clamping means, such as clamping pads, arranged over its entire periphery and arranged to move radially projecting from said cylinder to bear on the pipe walls to be clamped, said device also comprising motorization means allowing it to move inside the ducts once the welding performed and the pads retracted.
Les dispositifs actuels présentent généralement pour chaque jeu de patins de serrage, un piston central qui pousse une pièce massive dans laquelle sont insérés des axes de biellettes poussant les biellettes qui poussent ensuite des axes entraînant des pistons portant les patins de serrage dans des guidages radiaux pour déplacer en saillie radiale les patins de serrage afin de les plaquer contre la peau interne des conduits à assembler.The current devices generally have for each set of clamping pads, a central piston which pushes a solid piece in which are inserted pins rods pushing rods which then push pins driving pistons carrying the clamping pads in radial guides for radially projecting the clamping pads in order to press them against the inner skin of the ducts to be assembled.
Un tel dispositif présente de nombreux inconvénients tels qu'une faiblesse au cisaillement au niveau des axes se trouvant à chaque extrémité des biellettes, la nécessité de prévoir une pièce centrale par diamètre de conduit ainsi qu'une poussée limitée du piston à environ 10 tonnes. Par ailleurs, les axes sont maintenus de manière fixe dans des pièces forgées ou usinées dans la masse de sorte que, lorsqu'il y a déformation d'un support d'axe et nécessité de le changer, il faut changer l'ensemble. De tels dispositifs sont en particulier décrits dans les brevets US 4 253 599, WO 00/00322 et US 5 288 005.Such a device has many drawbacks such as shear weakness at the axes located at each end of the rods, the need to provide a central piece diameter conduit and a limited thrust of the piston to about 10 tons. Moreover, the axes are fixedly held in forgings or machined in the mass so that when there is deformation of an axis support and need to change it, we must change the whole. Such devices are in particular described in US Pat. Nos. 4,253,599, WO 00/00322 and US 5,288,005.
En outre, lors de la pose de conduits à axe sensiblement horizontal, on observe un déséquilibre dans l'usure des pièces, les pièces ou pistons se trouvant en position inférieure devant être changés beaucoup plus souvent, ce qui est un inconvénient majeur.In addition, when laying pipes substantially horizontal axis, there is an imbalance in the wear of the parts, parts or pistons in the lower position to be changed much more often, which is a major drawback.
On connaît par US 4 582 241 un dispositif de serrage et de centrage pour conduits tubulaires à souder bout à bout dans lequel les moyens d'entraînement sont constitués d'un piston relié par un manchon de cylindre coulissant sur un arbre, ce manchon comportant des logements à sa périphérie formant sièges pour des tiges d'articulation à tête sphérique ou ronde formant la liaison vers des arbres radialement disposés portant les patins de serrage. Les arbres comportent eux aussi des sièges sphériques, l'extrémité de la tige d'articulation étant sphérique ou circulaire.US 4,582,241 discloses a clamping and centering device for tubular conduits to be welded end to end in which the drive means consist of a piston connected by a cylinder sleeve sliding on a shaft, this sleeve comprising housings at its periphery forming seats for hinge pins with ball or round head forming the connection to radially arranged shafts bearing the clamping pads. The trees also have spherical seats, the end of the hinge pin being spherical or circular.
Un tel dispositif peut éventuellement permettre d'éviter les forces de cisaillement sur les axes de maintien des tiges d'articulation, toutefois il nécessite des tiges d'articulation qui sont usinées de manière très spécifiques, les pièces formant siège pour lesdites tiges étant elles aussi d'un conformation spécifique. Un tel dispositif est donc d'une réalisation relativement complexe et donc onéreuse.Such a device may possibly make it possible to avoid shearing forces on the axes for holding the articulation rods, however it requires articulation rods that are machined in a very specific manner, the parts forming a seat for said rods being also of a specific conformation. Such a device is therefore a relatively complex and therefore expensive.
Afin de pallier ces inconvénients, la présente invention a pour objet de proposer un dispositif de centrage et de serrage de pièces tubulaires telles que des conduits destinés à former des canalisations de type pipeline, du type constitué d'un cylindre allongé qui renferme notamment des moyens de serrage, tels que au moins une série de patins de serrage, disposés sur toute sa périphérie et agencés pour se déplacer radialement en saillie dudit cylindre pour venir en appui sur les parois des conduits à serrer ainsi que des moyens d'entraînement en déplacement de chaque série de patins de serrage entre une position en saillie du cylindre et une position où ils sont effacés dans le cylindre, caractérisé en ce que lesdits moyens d'entraînement sont constitués d'un organe d'entraînement relié de manière détachable à un plateau qui porte une pluralité de pièces d'appui sur chacune desquelles est montée pivotante autour d'un axe la première extrémité d'une biellette à la manière d'une rotule, la seconde extrémité de la biellette étant également montée pivotante autour d'un axe, à la manière d'une rotule dans une seconde pièce d'appui portant un patin de serrage, l'entraînement en coulissement de l'organe d'entraînement dans une direction longitudinale du cylindre provoquant le pivotement de la première extrémité des biellettes tandis que le pivotement résultant de la seconde extrémité des biellettes provoque le déplacement radial du patin de serrage associé.In order to overcome these drawbacks, the object of the present invention is to propose a device for centering and clamping tubular parts such as ducts intended to form pipelines of the pipeline type, of the type consisting of an elongate cylinder which notably contains means clamping devices, such as at least one series of clamping pads, arranged over its entire periphery and arranged to move radially projecting from said cylinder to bear against the walls of the ducts to be clamped as well as drive means in displacement of each series of clamping pads between a position protruding from the cylinder and a position where they are erased in the cylinder, characterized in that said drive means consist of a drive member releasably connected to a plate which carries a plurality of support pieces on each of which is pivotally mounted about an axis the first end of a bie It has the shape of a ball joint, the second end of the link being also pivotally mounted about an axis, at the a ball joint in a second support piece carrying a clamping shoe, the sliding drive of the drive member in a longitudinal direction of the cylinder causing the pivot of the first end of the rods while the resulting pivoting the second end of the links causes the radial displacement of the associated clamping shoe.
De manière avantageuse, les biellettes du dispositif selon l'invention travaillent uniquement en compression ce qui permet de générer un effort de poussée pouvant aller jusqu'à 60 tonnes. Les axes servant au montage d'une biellette dans les pièces d'appui ne jouent aucun rôle dans l'effort de poussée, ce qui limite avantageusement leur usure, mais ont uniquement une fonction de rappel des pièces d'appui. De plus, il s'agit de biellette de conception simple, ne demandant pas une conformation particulière contrairement aux tiges d'articulation de l'état de la technique et donc économique.Advantageously, the links of the device according to the invention work only in compression which allows to generate a thrust force of up to 60 tons. The pins used to mount a rod in the support pieces play no role in the thrust force, which advantageously limits their wear, but have a reminder function of the support pieces. In addition, it is simple rod design, not requiring a particular conformation unlike the hinge pins of the state of the art and therefore economic.
Chaque pièce d'appui présente un siège dans lequel se loge à pivotement l'extrémité d'une biellette. Chaque pièce d'appui, chaque siège et chaque organe d'entraînement tel qu'un piston sont les mêmes quels que soient les diamètres.Each support piece has a seat in which is pivotally housed the end of a link. Each support piece, each seat and each drive member such as a piston are the same regardless of the diameters.
En outre, comme il n'est plus nécessaire d'introduire des axes dans une pièce massive, il est possible de rapprocher les pièces d'appui portant les patins de serrage et donc d'en augmenter le nombre ce qui a pour résultat une amélioration du serrage.In addition, since it is no longer necessary to introduce pins into a solid piece, it is possible to bring the bearing parts carrying the clamping pads and therefore to increase the number thereof which results in an improvement. tightening.
De préférence, l'ensemble pièces d'appui, biellettes et pièces d'appui portant les patins présente des moyens de graissage in situ.Preferably, the set of support pieces, rods and bearing pieces carrying the pads has greasing means in situ.
Il est possible de prévoir plusieurs plateaux sur le même axe de poussée pour les petits diamètres de manière à permettre une poussée suffisante.It is possible to provide several trays on the same thrust axis for small diameters so as to allow sufficient thrust.
De préférence, selon une forme de réalisation préférée de l'invention, le dispositif comporte un arbre creux en son centre définissant l'axe central du dispositif et conférant la rigidité du dispositif tout en permettant le transport de tous les câbles et flexibles. Le dispositif selon l'invention permet donc d'obtenir une transmission d'effort améliorée, tout en présentant des pièces d'usure facilement démontables, ce qui facilite grandement l'entretien et les réparations au contraire des dispositifs précédents.Preferably, according to a preferred embodiment of the invention, the device comprises a hollow shaft at its center defining the central axis of the device and conferring the rigidity of the device while allowing the transport of all cables and hoses. The device according to the invention thus makes it possible to obtain an improved transmission of effort, while presenting wearing parts that are easily removable, which greatly facilitates maintenance and repairs, unlike the previous devices.
Le dispositif de centrage et de serrage selon l'invention peut être du type équipé d'une latte support maintenant le bain de fusion ou bien sans latte support ou peut même être du type pourvu d'un organe de soudage réalisant une passe par l'intérieur.The centering and clamping device according to the invention may be of the type equipped with a support batten holding the melt or without a support batten or may even be of the type provided with a welding member making a pass through the inside.
De manière avantageuse, le dispositif selon l'invention comporte en outre au moins deux organes de centrage distincts des patins de serrage et constitués respectivement d'au moins un élément gonflable, fixable sur la périphérie du cylindre allongé.Advantageously, the device according to the invention further comprises at least two centering members separate clamping pads and constituted respectively of at least one inflatable element, fixable on the periphery of the elongate cylinder.
On décrira maintenant l'invention plus en détail en référence au dessin dans lequel la figure unique représente une vue en coupe longitudinale d'un dispositif selon la présente invention.The invention will now be described in more detail with reference to the drawing in which the single figure shows a longitudinal sectional view of a device according to the present invention.
Le dispositif de centrage et de serrage selon l'invention représenté à la figure unique est constitué d'un cylindre 1 allongé qui renferme notamment des moyens de serrage permettant le serrage de conduits à aligner dans lequel ledit dispositif est engagé.The centering and clamping device according to the invention shown in the single figure consists of an elongated cylinder 1 which contains in particular clamping means for clamping conduits to align in which said device is engaged.
Ces moyens de serrage sont constitués par au moins une série de patins de serrage 2, disposés sur toute la périphérie du cylindre 1 et agencés pour se déplacer radialement en saillie dudit cylindre 1 pour venir en appui sur les parois des conduits à serrer.These clamping means are constituted by at least one series of clamping pads 2, arranged over the entire periphery of the cylinder 1 and arranged to move radially projecting from said cylinder 1 to bear against the walls of the ducts to be clamped.
Sur la figure unique, deux séries de patins 2 sont représentées (une série pour chaque extrémité de conduits à assembler), mais il est également possible de n'utiliser qu'une série de patins, avec l'extrémité des patins en forme de U qui prend appui sur chacune des extrémités à assembler.In the single figure, two series of pads 2 are shown (a series for each end of ducts to be assembled), but it is also possible to use only a series of pads, with the end of the U-shaped pads which bears on each end to be assembled.
Des moyens d'entraînement en déplacement de chaque série de patins de serrage sont prévus pour entraîner lesdits patins entre la position en saillie du cylindre 1 et la position où ils sont effacés dans le cylindre 1.Displacement drive means of each series of clamping pads are provided for driving said pads between the projecting position of the cylinder 1 and the position where they are erased in the cylinder 1.
Ces moyens d'entraînement sont constitués d'un organe d'entraînement 3 tels qu'un piston pneumatique ou hydraulique relié de manière détachable à un plateau 4. Ce plateau 4 circulaire porte à sa périphérie une pluralité de pièces d'appui 5 sur chacune desquelles est montée pivotante autour d'un axe x la première extrémité d'une biellette 6 à la manière d'une rotule.These drive means consist of a drive member 3 such as a pneumatic or hydraulic piston detachably connected to a plate 4. This circular plate 4 carries at its periphery a plurality of support parts 5 on each of which is pivotally mounted about an axis x the first end of a rod 6 in the manner of a ball joint.
La seconde extrémité de la biellette 6 est également montée pivotante autour d'un axe y, à la manière d'une rotule dans une seconde pièce d'appui encore appelé piston 7 portant un patin de serrage 2, l'entraînement en coulissement de l'organe d'entraînement 3 selon une direction longitudinale du cylindre 1 provoquant le pivotement de la première extrémité des biellettes 6 tandis que le pivotement résultant de la seconde extrémité des biellettes 6 provoque le déplacement radial du patin de serrage 2 associé.The second end of the rod 6 is also pivotally mounted about an axis y, in the manner of a ball joint in a second support piece, also called piston 7 carrying a clamping pad 2, the sliding drive of the driving member 3 in a longitudinal direction of the cylinder 1 causing pivoting of the first end of the rods 6 while the pivoting resulting from the second end of the rods 6 causes the radial displacement of the associated clamping shoe 2.
De préférence, des moyens de graissage sont prévus in situ pour les biellettes 6.Preferably, greasing means are provided in situ for the rods 6.
Les moyens de serrage tels que décrits peuvent également servir au centrage des conduits mais il est également possible de prévoir des moyens de centrage autres tels que des éléments fixés à la périphérie du cylindre 1 et gonflables.The clamping means as described can also be used for centering the ducts, but it is also possible to provide other centering means such as elements fixed to the periphery of the cylinder 1 and inflatable.
Pour chaque jeu de patins de serrage, il y des moyens d'entraînement en déplacement.For each set of clamping shoes there are drive means for moving.
Lorsque le dispositif de centrage et de serrage est destiné à une utilisation pour des conduits de petit diamètre, on peut prévoir une succession de plateaux sur le même axe de poussée, donc de chambres pneumatiques ou hydrauliques, pour augmenter la force de placage avec une même pression de base.When the centering and clamping device is intended for use for small diameter ducts, a succession of trays can be provided on the same thrust axis, therefore of pneumatic or hydraulic chambers, to increase the plating force with a single basic pressure.
Comme cela est visible, le dispositif selon l'invention présente un arbre creux 8 central permettant notamment des faire passer l'ensemble des câbles, fils et flexibles du dispositif ainsi que ceux appartenant à des ensembles situés à l'arrière du dispositif tels qu'un outil d'inspection intérieure.As can be seen, the device according to the invention has a central hollow shaft 8 allowing in particular to pass all the cables, wires and hoses of the device as well as those belonging to assemblies located at the rear of the device such as an internal inspection tool.
L'invention n'est bien entendu pas limitée à l'exemple de réalisation décrit mais couvre toutes les variantes possibles dans le champ de protection des revendications. The invention is of course not limited to the embodiment described but covers all possible variants in the field of protection of the claims.

Claims

REVENDICATIONS
1. Dispositif de centrage et de serrage de pièces tubulaires telles que des conduits destinés à former des canalisations de type pipeline, du type constitué d'un cylindre allongé (1) qui renferme notamment des moyens de serrage, tels que au moins une série de patins de serrage (2), disposés sur toute sa périphérie et agencés pour se déplacer radialement en saillie dudit cylindre (1 ) pour venir en appui sur les parois des conduits à serrer ainsi que des moyens d'entraînement en déplacement de chaque série de patins de serrage (2) entre une position en saillie du cylindre (1) et une position où ils sont effacés dans le cylindre (1 ), caractérisé en ce que lesdits moyens d'entraînement sont constitués d'un organe d'entraînement (3) relié de manière détachable à un plateau (4) qui porte une pluralité de pièces d'appui (5) sur chacune desquelles est montée pivotante autour d'un axe la première extrémité d'une biellette (6) à la manière d'une rotule, la seconde extrémité de la biellette (6) étant également montée pivotante autour d'un axe, à la manière d'une rotule dans une seconde pièce d'appui portant un patin de serrage (2), l'entraînement en coulissement de l'organe d'entraînement (3) dans une direction longitudinale du cylindre (1) provoquant le pivotement de la première extrémité des biellettes (6) tandis que le pivotement résultant de la seconde extrémité des biellettes (6) provoque Ie déplacement radial des patins de serrage (2) associés.1. Device for centering and clamping tubular pieces such as conduits intended to form pipelines of the pipeline type, of the type consisting of an elongate cylinder (1) which encloses in particular clamping means, such as at least one series of clamping pads (2), arranged over its entire periphery and arranged to move radially projecting from said cylinder (1) to bear against the walls of the ducts to be clamped as well as moving drive means of each series of pads clamping device (2) between a projecting position of the cylinder (1) and a position where they are erased in the cylinder (1), characterized in that said drive means consist of a drive member (3) detachably connected to a plate (4) which carries a plurality of bearing parts (5) on each of which is pivotally mounted about an axis the first end of a rod (6) in the manner of a ball joint , the dry wave end of the link (6) being also pivotally mounted about an axis, in the manner of a ball joint in a second support piece carrying a clamping shoe (2), the sliding drive of the organ driving (3) in a longitudinal direction of the cylinder (1) causing pivoting of the first end of the links (6) while the resulting pivoting of the second end of the links (6) causes the radial displacement of the clamping pads ( 2) associates.
2. Dispositif selon la revendication 1, caractérisé en ce que l'organe d'entraînement est un piston (3) pneumatique ou hydraulique.2. Device according to claim 1, characterized in that the drive member is a piston (3) pneumatic or hydraulic.
3. Dispositif selon l'une des revendications 1 et 2, caractérisé en ce que des moyens de graissage sont prévus in situ pour les biellettes (6).3. Device according to one of claims 1 and 2, characterized in that greasing means are provided in situ for the rods (6).
4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce qu'il comporte un arbre creux (8) en son centre conférant le centrage et la rigidité du dispositif tout en permettant le transport de tous les câbles et flexibles.4. Device according to one of claims 1 to 3, characterized in that it comprises a hollow shaft (8) at its center conferring centering and rigidity of the device while allowing the transport of all cables and hoses.
5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce qu'il comporte plusieurs pistons (3) sur le même axe de poussée pour les petits diamètres de conduits. 5. Device according to one of claims 1 to 4, characterized in that it comprises a plurality of pistons (3) on the same thrust axis for small diameters of ducts.
6. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce qu'il comporte en outre au moins deux organes de centrage distincts des patins de serrage et constitués respectivement d'un élément annulaire, fixable sur la périphérie du cylindre allongé . 6. Device according to one of claims 1 to 5, characterized in that it further comprises at least two separate centering members of the clamping pads and respectively constituted by an annular element, fixable on the periphery of the elongate cylinder.
EP06778617A 2005-06-17 2006-06-19 Device for centering and clamping tubular parts Withdrawn EP1907167A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0506166A FR2887164B1 (en) 2005-06-17 2005-06-17 DEVICE FOR CENTERING AND CLAMPING TUBULAR PIECES
PCT/FR2006/001383 WO2006134284A1 (en) 2005-06-17 2006-06-19 Device for centering and clamping tubular parts

Publications (1)

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EP1907167A1 true EP1907167A1 (en) 2008-04-09

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EP06778617A Withdrawn EP1907167A1 (en) 2005-06-17 2006-06-19 Device for centering and clamping tubular parts

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US (2) US20090114702A1 (en)
EP (1) EP1907167A1 (en)
KR (1) KR101329454B1 (en)
CN (1) CN101242928A (en)
CA (1) CA2611824A1 (en)
FR (1) FR2887164B1 (en)
RU (1) RU2401187C2 (en)
WO (1) WO2006134284A1 (en)

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Also Published As

Publication number Publication date
CN101242928A (en) 2008-08-13
RU2401187C2 (en) 2010-10-10
KR20080034880A (en) 2008-04-22
US20090114702A1 (en) 2009-05-07
RU2008100216A (en) 2009-07-27
FR2887164B1 (en) 2007-10-26
US20140097616A1 (en) 2014-04-10
KR101329454B1 (en) 2013-11-15
WO2006134284A1 (en) 2006-12-21
FR2887164A1 (en) 2006-12-22
CA2611824A1 (en) 2006-12-21

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