EP1482102A1 - Process for blocking of at least one strand in an anchor block and blocking system for at least one strand in an anchor block - Google Patents

Process for blocking of at least one strand in an anchor block and blocking system for at least one strand in an anchor block Download PDF

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Publication number
EP1482102A1
EP1482102A1 EP04291221A EP04291221A EP1482102A1 EP 1482102 A1 EP1482102 A1 EP 1482102A1 EP 04291221 A EP04291221 A EP 04291221A EP 04291221 A EP04291221 A EP 04291221A EP 1482102 A1 EP1482102 A1 EP 1482102A1
Authority
EP
European Patent Office
Prior art keywords
strand
orifice
frustoconical
jaw
explosive cartridge
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.)
Granted
Application number
EP04291221A
Other languages
German (de)
French (fr)
Other versions
EP1482102B1 (en
Inventor
Jean-Pierre Messein
Sébastien Diaz
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.)
Freyssinet SAS
Original Assignee
Freyssinet SAS
Freyssinet International STUP SA
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Filing date
Publication date
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Publication of EP1482102A1 publication Critical patent/EP1482102A1/en
Application granted granted Critical
Publication of EP1482102B1 publication Critical patent/EP1482102B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/06—Means for driving the impulse member
    • B25D9/11—Means for driving the impulse member operated by combustion pressure generated by detonation of a cartridge
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B7/00—Special arrangements or measures in connection with doors or windows
    • E06B7/16—Sealing arrangements on wings or parts co-operating with the wings
    • E06B7/22—Sealing arrangements on wings or parts co-operating with the wings by means of elastic edgings, e.g. elastic rubber tubes; by means of resilient edgings, e.g. felt or plush strips, resilient metal strips
    • E06B7/23—Plastic, sponge rubber, or like strips or tubes
    • E06B7/2305—Plastic, sponge rubber, or like strips or tubes with an integrally formed part for fixing the edging
    • E06B7/2312—Plastic, sponge rubber, or like strips or tubes with an integrally formed part for fixing the edging with two or more sealing-lines or -planes between the wing and part co-operating with the wing
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/08—Members specially adapted to be used in prestressed constructions
    • E04C5/12—Anchoring devices
    • E04C5/122—Anchoring devices the tensile members are anchored by wedge-action
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/12—Mounting of reinforcing inserts; Prestressing
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/12—Mounting of reinforcing inserts; Prestressing
    • E04G21/121—Construction of stressing jacks
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/32—Arrangements of wings characterised by the manner of movement; Arrangements of movable wings in openings; Features of wings or frames relating solely to the manner of movement of the wing
    • E06B3/34—Arrangements of wings characterised by the manner of movement; Arrangements of movable wings in openings; Features of wings or frames relating solely to the manner of movement of the wing with only one kind of movement
    • E06B3/36—Arrangements of wings characterised by the manner of movement; Arrangements of movable wings in openings; Features of wings or frames relating solely to the manner of movement of the wing with only one kind of movement with a single vertical axis of rotation at one side of the opening, or swinging through the opening
    • E06B3/362—Double winged doors or windows
    • E06B3/365—Astragals for double doors
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B7/00—Special arrangements or measures in connection with doors or windows
    • E06B7/16—Sealing arrangements on wings or parts co-operating with the wings
    • E06B7/22—Sealing arrangements on wings or parts co-operating with the wings by means of elastic edgings, e.g. elastic rubber tubes; by means of resilient edgings, e.g. felt or plush strips, resilient metal strips
    • E06B7/23—Plastic, sponge rubber, or like strips or tubes
    • E06B7/2314—Plastic, sponge rubber, or like strips or tubes characterised by the material
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B7/00—Special arrangements or measures in connection with doors or windows
    • E06B7/28—Other arrangements on doors or windows, e.g. door-plates, windows adapted to carry plants, hooks for window cleaners
    • E06B7/36—Finger guards or other measures preventing harmful access between the door and the door frame
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/10—Additional functions
    • E05Y2800/12—Sealing
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/40—Physical or chemical protection
    • E05Y2800/41—Physical or chemical protection against finger injury
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/02—Wings made completely of glass
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49833—Punching, piercing or reaming part by surface of second part
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49863—Assembling or joining with prestressing of part
    • Y10T29/49874—Prestressing rod, filament or strand
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49945—Assembling or joining by driven force fit
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49947—Assembling or joining by applying separate fastener

Definitions

  • the present invention relates to a method of overblocking of at least one strand in an anchor block and a system for overblocking at least one strand in a block anchor.
  • the invention relates to a method for overblocking at least one strand in an anchor block by radial clamping of the strand by a frustoconical jaw which surrounds said strand and which is housed in a frustoconical recess of complementary shape made in the anchor block.
  • a strand is constituted by a wire or a plurality of twisted wires to be particularly with a view to ensuring the prestressing of a concrete body or the suspension of a structure such as a bridge (Stay).
  • the blocking or prior tightening of the strand before its overblocking in the anchor block is ensured by traction cable itself and at least partly by application an axial thrust on a large base of said jaw.
  • This axial thrust ensures cone-on-cone clamping said jaw with the anchor block thereby causing a radial clamping of the strand.
  • an operation of securing known as overblocking, ensures the holding the bit around the strand during the life of the work on which is stretched said strand.
  • This overblock operation is currently carried out by means of hammer blows carried directly on the big base of said jaw in order to move it on few millimeters in its housing to guarantee a radial prestress on the strand. Nevertheless, this overblocking operation performed by a striking operator with hammer on the bit does not guarantee accurately that moving the anchor jaw into its housing was sufficient for the said bit to find a so-called final position that is to say a position that said jaws is meant to find when loading maximum supported by said strand.
  • the present invention is intended in particular to perfecting these methods of overblocking in particular the operator is sure that said anchoring jaw has reaches its overblock position.
  • FIG. 1 represents an overclocking system 1 adapted to overlock at least one strand 2 in a block anchoring 3 by radial clamping of the strand by a jaw anchor 4 which surrounds said strand 2 and which is housed in a frustoconical recess 5 made in the anchoring block 3.
  • the strand 2 can be composed of a single strand or a plurality of twisted strands.
  • the anchoring jaw 4 can be formed by an anchor jaw slotted or by a plurality of keys 4a, 4b, for example two in number, of a semi-cylindrical shape and truncated.
  • the widest end of the anchor jaw 4 is axially protruding on the face 3a of the anchoring block 3.
  • the free end of the strand 2 also extends beyond the widest portion of the anchor jaw 4.
  • Radial clamping of the strand 2 by the anchoring jaw 4 is ensured by a wedge effect by soliciting this bit anchoring 4 and thus the keys 4a, 4b at the depression in the tapered recess. 5.
  • the axial stress can be generated by the tension of the strand 2 because of friction between this strand and the inner face of the anchoring jaws 4, or by pressing axially this bit 4 in the recess 5 while the tension of the strand 2 is zero.
  • overblocking makes it possible to guarantee the hold of the bit anchoring 4 and thus keys 4a, 4b during life of the book.
  • This overblocking makes it possible to guarantee radial prestressing on the strand 2 by depressing the bit 4, this preload on the strand 2 substantially corresponding to the final position of the keys 4a, 4b, i.e. the position they would find during the maximum load to bear by the strand 2.
  • the overlock system comprises, as can be seen in FIG. an explosive cartridge device 6 and a device transmission of effort 7 directly disposed between the explosive cartridge device 6 and the anchor jaw 4 previously pressed into the frustoconical recess 5 of the block anchor 3.
  • the explosive cartridge device 6 can by example be formed by an automatic cartridge gun explosive replaceable automatically or manually, and which includes (Figure 2) a flyweight 8 intended to be propelled during the explosion of the explosive cartridge.
  • this explosive cartridge device 6 can be formed by an automatic cartridge gun marketed by HILTI, particularly under the reference DXA 40.
  • the force transmission device 7 is to him for cooperating with the weight 8 of the device with an explosive cartridge 6 to allow during the explosion of this explosive cartridge a propulsion of the weight against the device of transmission of efforts which supports turn against the frustoconical jaw 4 in order to drive it in a position of overblocking in the frustoconical recess 5 of the anchor block 3.
  • this force transmission device 7 comprises a body 9 formed by a first housing 10 and a second housing 11 which delimit between them a room 12.
  • This inner chamber 12 of the body 9 extends between a first orifice 13 directly made on the first housing 10 and a second port 14 directly made on the second casing 11.
  • the first port 13 is directly connected to a tip 6a in which is housed slidably the weight 8 of the device to explosive cartridge 6.
  • This tip 6a can form an element constituent of the explosive cartridge device 6 or form a constituent element of the transmission device 7.
  • This tip 6a is directly mounted fixed in the orifice 13 of the first housing 10 for example by means of a pin 15 which passes right through the housing 10 for come cooperate with the tip 6a so as to secure them between them.
  • the second casing 11 has a bottom 11a on which is made the orifice 14, and from which extends an annular wall 11b intended to cooperate with an annular wall 10a of first housing 10 to form the inner chamber 12.
  • the first casing 10 and the second casing 11 are fixed between them by any appropriate means and in particular for example by screwing and / or by means of a pin 16.
  • the force transmission device 7 comprises also a percussion organ 17 that presents itself substantially in the form of an elongate tree that includes, on the one hand, a first portion 18 housed in the chamber inside 12 of the body 9 and which has a diameter greater than the second orifice 14 of the housing 11, and other part, a second hollow cylindrical portion 19 which is integral with the first portion 18 and which is mounted sliding in the second orifice 14 of the housing 11.
  • This second cylindrical portion 19 has a free end 19a intended to bear against the widest part keys 4a, 4b forming the anchor jaw 4 while surrounding the end of strand 2 which protrudes beyond said keys 4a, 4b.
  • the first portion 18 of the percussion member 17 also comprises a wall cylindrical ring 18a which extends towards the casing 10 and surrounding a compression spring 20 directly interposed between the housing 10 and the first portion 18 of the percussion organ 17.
  • the first portion 18 of the percussion member 17 also comprises a centralizer 21 of the spring 20 which is arranged opposite the weight 8.
  • damping elements 22, 23 are arranged on either side of the inner chamber 12 of the body 9 so as to dampen the displacement of the first portion 18 of the percussion member 17 within the body 9.
  • the operator When an operator wants to unlock the bit anchor 4 in the frustoconical recess 5 of the anchor block 3 after having previously placed and depressed said bit 4 in the frustoconical recess 5, the operator first positions the overblocking system of such so that the free end 19a of the percussion member 17 come into contact with the keys 4a, 4b while surrounding the strand 2.
  • This implementation of the overclocking system 1 on the anchoring jaw 4 has the effect of bringing the annular wall 18a of the first portion 18 of the percussion member 17 in support against the damping element 23 and this to against the solicitation exercised by the compression 20.
  • the operator then only has to operate the explosive cartridge device 6 by igniting the explosion of said cartridge which can be an explosive cartridge releasing a gas at high pressure following the priming of the explosion to propel the weight 8 against the centralizer 21 of the first portion 18 of the organ percussion 17.
  • This percussion member 17 then transmits automatically the shock produced by the weight 8 to keys 4a, 4b of the anchoring jaw 4 so as to bring it in an overblock position that corresponds to a position that the anchor would have found during the maximum load tolerated by strand 2, ensuring thus a radial prestressing of the strand 2.
  • This overblocking operation therefore makes it possible to dissociate the resistance of the strand in the anchorage and the tension of the strand, which may be advantageous in the case where the 2 strand voltage can be greatly reduced or canceled, during the service of the strand itself: such a situation that may occur for example during the receiving a shock by a suspension bridge strand, the shock can be caused for example by an earthquake, a tornado or by the loss of control of a vehicle weight heavy.
  • the choice of the explosive cartridge and of the percussion organ 17 allows to adapt and choose the calibrated force transmitted to the anchor jaw in order to freeze it in its so-called overblocking position.
  • the dimensions of the weight and the organ of repercussion 17 can be chosen so as to avoid their buckling or matting.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Earth Drilling (AREA)
  • Piles And Underground Anchors (AREA)
  • Bridges Or Land Bridges (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Working Measures On Existing Buildindgs (AREA)

Abstract

The process involves propelling a counter weight (8) by explosion of a cartridge. A force transmitting device (7) is arranged between the counter weight of a cartridge explosive device and a tapered bit (4). The cartridge is actuated to propel the counter weight against the device (7). The device (7) supports against the bit (4) to drive in a tapered recess (5) of an anchoring block (3). An independent claim is also included for a locking system of a strand in an anchoring block.

Description

La présente invention se rapporte à un procédé de surblocage d'au moins un toron dans un bloc d'ancrage et à un système de surblocage d'au moins un toron dans un bloc d'ancrage.The present invention relates to a method of overblocking of at least one strand in an anchor block and a system for overblocking at least one strand in a block anchor.

Plus particulièrement, l'invention vise un procédé de surblocage d'au moins un toron dans un bloc d'ancrage par serrage radial du toron par un mors tronconique qui entoure ledit toron et qui est logé dans un évidement tronconique de forme complémentaire réalisé dans le bloc d'ancrage.More particularly, the invention relates to a method for overblocking at least one strand in an anchor block by radial clamping of the strand by a frustoconical jaw which surrounds said strand and which is housed in a frustoconical recess of complementary shape made in the anchor block.

De manière connue en soi, un toron est constitué par un fil ou par une pluralité de fils torsadés destinés à être tendus notamment en vue d'assurer la précontrainte d'un corps en béton ou la suspension d'un ouvrage tel qu'un pont (hauban).In a manner known per se, a strand is constituted by a wire or a plurality of twisted wires to be particularly with a view to ensuring the prestressing of a concrete body or the suspension of a structure such as a bridge (Stay).

Le blocage ou serrage préalable du toron avant son surblocage dans le bloc d'ancrage est assuré par la traction du câble lui-même et au moins en partie par application d'une poussée axiale sur une grande base dudit mors. Cette poussée axiale permet d'assurer un serrage cône sur cône dudit mors avec le bloc d'ancrage en provoquant ainsi un serrage radial du toron. Afin de garantir un non glissement du toron par rapport au mors qui l'entoure, une opération de sécurisation, appelée surblocage, permet de garantir la tenue du mors autour du toron au cours de la vie de l'ouvrage sur lequel est tendu ledit toron.The blocking or prior tightening of the strand before its overblocking in the anchor block is ensured by traction cable itself and at least partly by application an axial thrust on a large base of said jaw. This axial thrust ensures cone-on-cone clamping said jaw with the anchor block thereby causing a radial clamping of the strand. In order to guarantee a non-slip the strand in relation to the bit surrounding it, an operation of securing, known as overblocking, ensures the holding the bit around the strand during the life of the work on which is stretched said strand.

Cette opération de surblocage est actuellement effectuée au moyen de coups de marteau portés directement sur la grande base dudit mors afin de le déplacer sur quelques millimètres dans son logement afin de garantir une précontrainte radiale sur le toron. Néanmoins, cette opération de surblocage effectuée par un opérateur frappant à coups de marteau sur le mors ne permet pas de garantir avec exactitude que le déplacement du mors d'ancrage dans son logement a été suffisant pour que ledit mors trouve une position dite finale c'est-à-dire une position que ledit mors est destiné à trouver lors du chargement maximum supporté par ledit toron.This overblock operation is currently carried out by means of hammer blows carried directly on the big base of said jaw in order to move it on few millimeters in its housing to guarantee a radial prestress on the strand. Nevertheless, this overblocking operation performed by a striking operator with hammer on the bit does not guarantee accurately that moving the anchor jaw into its housing was sufficient for the said bit to find a so-called final position that is to say a position that said jaws is meant to find when loading maximum supported by said strand.

Par ailleurs, cette opération de sécurisation au moyen de coups de marteau n'est généralement pas adaptée lorsque ledit mors d'ancrage est difficilement accessible, notamment dans les structures d'ouvrage exiguës.In addition, this security operation hammer blows is usually not suitable when said anchoring jaw is difficult to access, especially in small structures structures.

La présente invention a notamment pour but de perfectionner ces procédés de surblocage notamment de façon à ce que l'opérateur soit sûr que ledit mors d'ancrage a atteint sa position de surblocage.The present invention is intended in particular to perfecting these methods of overblocking in particular the operator is sure that said anchoring jaw has reaches its overblock position.

A cet effet, selon l'invention, un procédé de surblocage du genre en question est caractérisé en ce que qu'il comprend les étapes suivantes :

  • on utilise un dispositif à cartouche explosive comprenant une masselotte destinée à être propulsée par l'explosion de la cartouche,
  • on dispose un dispositif de transmission d'efforts entre la masselotte du dispositif à cartouche explosive et le mors tronconique, et
  • on actionne la cartouche explosive pour propulser la masselotte contre le dispositif de transmission d'efforts qui appui à son tour contre le mors tronconique pour l'enfoncer dans l'évidement tronconique du bloc d'ancrage en provoquant un surblocage du toron par serrage radial du mors tronconique.
For this purpose, according to the invention, an overblocking method of the kind in question is characterized in that it comprises the following steps:
  • an explosive cartridge device is used comprising a flyweight intended to be propelled by the explosion of the cartridge,
  • there is a device for transmitting forces between the weight of the explosive cartridge device and the frustoconical jaw, and
  • the explosive cartridge is actuated to propel the weight against the force transmission device which in turn bears against the frustoconical jaw to drive it into the frustoconical recess of the anchor block, causing the strand to be clamped by radial clamping of the frustoconical jaws.

Dans des modes de réalisation préférés de ce procédé, selon l'invention, on peut éventuellement avoir recours en outre à l'une et/ou à l'autre des étapes suivantes :

  • on utilise un dispositif à cartouche de gaz à haute pression ;
  • on utilise un dispositif de transmission d'efforts qui comprend :
    • un corps délimitant une chambre intérieure qui s'étend entre un premier orifice raccordé à un embout du dispositif à cartouche explosive à partir duquel est propulsée la masselotte et un deuxième orifice, et
    • un organe de percussion qui comprend, d'une part, une première portion logée dans la chambre intérieure du corps et qui présente un diamètre supérieur au deuxième orifice, ladite première portion étant destinée à être percutée par la masselotte, et d'autre part, une deuxième portion solidaire de la première portion et qui est montée coulissante dans le deuxième orifice, ladite deuxième portion présentant une extrémité libre destinée à coopérer avec le mors tronconique ; et
  • un ressort de compression est interposé entre la première portion de l'organe de percussion et la chambre intérieure du corps.
In preferred embodiments of this method, according to the invention, it may optionally be resorted to furthermore to one and / or the other of the following steps:
  • a high pressure gas cartridge device is used;
  • a force transmission device is used which comprises:
    • a body defining an inner chamber which extends between a first port connected to a tip of the explosive cartridge device from which the flyweight is propelled and a second port, and
    • a percussion member which comprises, on the one hand, a first portion housed in the inner chamber of the body and which has a diameter greater than the second orifice, said first portion being intended to be struck by the weight, and secondly, a second portion integral with the first portion and which is slidably mounted in the second orifice, said second portion having a free end intended to cooperate with the frustoconical jaw; and
  • a compression spring is interposed between the first portion of the percussion member and the inner chamber of the body.

Par ailleurs, l'invention a également pour objet un système de surblocage d'au moins un toron dans un bloc d'ancrage par serrage radial du toron par un mors tronconique qui entoure ledit toron et qui est logé dans un évidement tronconique de forme complémentaire réalisé dans le bloc, caractérisé en ce qu'il comprend :

  • un dispositif à cartouche explosive comprenant une masselotte destinée à être propulsée par l'explosion de la cartouche, et
  • un dispositif de transmission d'efforts destiné à coopérer avec la masselotte du dispositif à cartouche explosive pour permettre lors de l'explosion de la cartouche explosive une propulsion de la masselotte contre ledit dispositif de transmission d'efforts qui appui à son tour contre le mors tronconique pour l'enfoncer dans l'évidement tronconique du bloc d'ancrage en provoquant un surblocage du toron par serrage radial du mors tronconique.
Furthermore, the subject of the invention is also a system for overlocking at least one strand in an anchor block by radial clamping of the strand by a frustoconical jaw which surrounds said strand and which is housed in a frustoconical recess of complementary shape. realized in the block, characterized in that it comprises:
  • an explosive cartridge device comprising a flyweight intended to be propelled by the explosion of the cartridge, and
  • a force transmission device intended to cooperate with the weight of the explosive cartridge device to enable, during the explosion of the explosive cartridge, propulsion of the weight against said force transmission device which in turn bears against the jaw frustoconical to push it into the frustoconical recess of the anchor block causing an overlocking of the strand by radial clamping of the frustoconical jaw.

Dans des modes de réalisation préférés du système de surblocage, selon l'invention, on peut éventuellement avoir recours en outre à l'une et/ou à l'autre des dispositions suivantes :

  • le dispositif de transmission d'efforts comprend :
    • un corps délimitant une chambre intérieure qui s'étend entre un premier orifice raccordé à un embout du dispositif à cartouche explosive à partir duquel est propulsée la masselotte et un deuxième orifice, et
    • un organe de percussion qui comprend, d'une part, une première portion logée dans la chambre intérieure du corps et qui présente un diamètre supérieur au deuxième orifice, ladite première portion étant destinée à être percutée par la masselotte, et d'autre part, une deuxième portion solidaire de la première portion et qui est montée coulissante dans le deuxième orifice, ladite deuxième portion présentant une extrémité libre destinée à coopérer avec le mors tronconique ;
  • un ressort de compression est interposé entre la première portion de l'organe de percussion et la chambre intérieure du corps ; et
  • le corps du dispositif de transmission d'efforts est formé par un premier carter qui comprend le premier orifice et par un deuxième carter solidaire dudit premier carter et qui comprend le deuxième orifice.
In preferred embodiments of the overblocking system according to the invention, one or more of the following provisions may also be used:
  • the force transmission device comprises:
    • a body defining an inner chamber which extends between a first port connected to a tip of the explosive cartridge device from which the flyweight is propelled and a second port, and
    • a percussion member which comprises, on the one hand, a first portion housed in the inner chamber of the body and which has a diameter greater than the second orifice, said first portion being intended to be struck by the weight, and secondly, a second portion integral with the first portion and which is slidably mounted in the second orifice, said second portion having a free end intended to cooperate with the frustoconical jaw;
  • a compression spring is interposed between the first portion of the percussion member and the inner chamber of the body; and
  • the body of the force transmission device is formed by a first housing which comprises the first orifice and a second housing integral with said first housing and which comprises the second orifice.

D'autres caractéristiques et avantages de l'invention apparaítront au cours de la description suivante d'une de ses formes de réalisation, donnée à titre d'exemple non limitatif, en regard des dessins joints.Other features and benefits of the invention will become apparent from the following description of one of its embodiments, given as an example non-limiting, with reference to the accompanying drawings.

Sur les dessins :

  • la figure 1 est une vue en coupe partielle du système de surblocage selon l'invention lors de son utilisation pour surbloquer un mors qui entoure un toron dans un bloc d'ancrage ; et
  • la figure 2 est une vue en coupe agrandie du dispositif de transmission d'efforts du système de surblocage conforme à l'invention.
On the drawings:
  • Figure 1 is a partial sectional view of the overlock system according to the invention when used to overlock a jaw that surrounds a strand in an anchor block; and
  • Figure 2 is an enlarged sectional view of the force transmission device of the overlock system according to the invention.

Sur les différentes figures, les mêmes références désignent des éléments identiques ou similaires.In the different figures, the same references designate identical or similar elements.

La figure 1 représente un système de surblocage 1 adapté pour surbloquer au moins un toron 2 dans un bloc d'ancrage 3 par serrage radial du toron par un mors d'ancrage 4 qui entoure ledit toron 2 et qui est logé dans un évidement tronconique 5 réalisé dans le bloc d'ancrage 3. Le toron 2 peut être composé d'un seul brin ou d'une pluralité de brins torsadés.FIG. 1 represents an overclocking system 1 adapted to overlock at least one strand 2 in a block anchoring 3 by radial clamping of the strand by a jaw anchor 4 which surrounds said strand 2 and which is housed in a frustoconical recess 5 made in the anchoring block 3. The strand 2 can be composed of a single strand or a plurality of twisted strands.

Comme on peut le voir plus en détail sur la figure 2, le mors d'ancrage 4 peut être formé par un mors d'ancrage fendu ou par une pluralité de clavettes 4a, 4b, par exemple au nombre de deux, de forme sensiblement semi cylindrique et tronconique.As can be seen in more detail in the figure 2, the anchoring jaw 4 can be formed by an anchor jaw slotted or by a plurality of keys 4a, 4b, for example two in number, of a semi-cylindrical shape and truncated.

La portion la plus étroite du mors tronconique 4, formée par les clavettes 4a, 4b, est logée dans l'extrémité étroite 5a de l'évidement tronconique 5 réalisé dans le bloc d'ancrage 3 traversé de part en part par le toron 2. L'extrémité la plus large du mors d'ancrage 4 fait axialement saillie sur la face 3a du bloc d'ancrage 3. L'extrémité libre du toron 2 s'étend également au-delà de la portion la plus large du mors d'ancrage 4.The narrowest portion of the frustoconical jaw 4, formed by the keys 4a, 4b, is housed in the end narrow 5a of the frustoconical recess 5 made in the block anchor 3 traversed from one side to the other by the strand 2. The widest end of the anchor jaw 4 is axially protruding on the face 3a of the anchoring block 3. The free end of the strand 2 also extends beyond the widest portion of the anchor jaw 4.

Le serrage radial du toron 2 par le mors d'ancrage 4 est assuré par un effet de coin en sollicitant ce mors d'ancrage 4 et donc les clavettes 4a, 4b à l'enfoncement axial dans l'évidement tronconique 5. Lors de la mise en place du mors d'ancrage 4 dans l'évidement tronconique 5 du bloc d'ancrage 3, la sollicitation axiale peut être engendrée par la tension même du toron 2 du fait du frottement qui existe entre ce toron et la face interne du mors d'ancrage 4, ou alors en enfonçant axialement ce mors d'ancrage 4 dans l'évidement 5 alors que la tension du toron 2 est nulle.Radial clamping of the strand 2 by the anchoring jaw 4 is ensured by a wedge effect by soliciting this bit anchoring 4 and thus the keys 4a, 4b at the depression in the tapered recess. 5. When setting place of the anchoring jaw 4 in the frustoconical recess 5 of the anchor block 3, the axial stress can be generated by the tension of the strand 2 because of friction between this strand and the inner face of the anchoring jaws 4, or by pressing axially this bit 4 in the recess 5 while the tension of the strand 2 is zero.

Afin de garantir un non glissement du toron 2 au travers du bloc d'ancrage 3, une opération de sécurisation, appelée surblocage, permet de garantir la tenue du mors d'ancrage 4 et donc des clavettes 4a, 4b au cours de la vie de l'ouvrage. Ce surblocage permet de garantir une précontrainte radiale sur le toron 2 par enfoncement du mors d'ancrage 4, cette précontrainte sur le toron 2 correspondant sensiblement à la position finale des clavettes 4a, 4b, c'est-à-dire la position qu'elles trouveraient lors du chargement maximum à supporter par le toron 2.In order to guarantee non-slip of strand 2 through the anchoring block 3, a security operation, called overblocking, makes it possible to guarantee the hold of the bit anchoring 4 and thus keys 4a, 4b during life of the book. This overblocking makes it possible to guarantee radial prestressing on the strand 2 by depressing the bit 4, this preload on the strand 2 substantially corresponding to the final position of the keys 4a, 4b, i.e. the position they would find during the maximum load to bear by the strand 2.

A cet effet, le système de surblocage conforme à l'invention comprend, comme on peut le voir sur la figure 1, un dispositif à cartouche explosive 6 ainsi qu'un dispositif de transmission d'efforts 7 directement disposé entre le dispositif à cartouche explosive 6 et le mors d'ancrage 4 préalablement enfoncé dans l'évidement tronconique 5 du bloc d'ancrage 3.For this purpose, the overlock system according to the invention comprises, as can be seen in FIG. an explosive cartridge device 6 and a device transmission of effort 7 directly disposed between the explosive cartridge device 6 and the anchor jaw 4 previously pressed into the frustoconical recess 5 of the block anchor 3.

Le dispositif à cartouche explosive 6 peut par exemple être formé par un pistolet automatique à cartouche explosive remplaçable automatiquement ou manuellement, et qui comprend (figure 2) une masselotte 8 destinée à être propulsée lors de l'explosion de la cartouche explosive. A titre d'exemple, ce dispositif à cartouche explosive 6 peut être formé par un pistolet automatique à cartouche commercialisé par la société HILTI notamment sous la référence DXA 40. The explosive cartridge device 6 can by example be formed by an automatic cartridge gun explosive replaceable automatically or manually, and which includes (Figure 2) a flyweight 8 intended to be propelled during the explosion of the explosive cartridge. AT For example, this explosive cartridge device 6 can be formed by an automatic cartridge gun marketed by HILTI, particularly under the reference DXA 40.

Le dispositif de transmission d'efforts 7 est quant à lui destiné à coopérer avec la masselotte 8 du dispositif à cartouche explosive 6 pour permettre lors de l'explosion de cette cartouche explosive une propulsion de la masselotte contre le dispositif de transmission d'efforts qui appuie à son tour contre le mors tronconique 4 afin de l'enfoncer dans une position de surblocage dans l'évidement tronconique 5 du bloc d'ancrage 3.The force transmission device 7 is to him for cooperating with the weight 8 of the device with an explosive cartridge 6 to allow during the explosion of this explosive cartridge a propulsion of the weight against the device of transmission of efforts which supports turn against the frustoconical jaw 4 in order to drive it in a position of overblocking in the frustoconical recess 5 of the anchor block 3.

A cet effet, ce dispositif de transmission d'effort 7 comprend un corps 9 formé par un premier carter 10 et un deuxième carter 11 qui délimitent entre eux une chambre intérieure 12. Cette chambre intérieure 12 du corps 9 s'étend entre un premier orifice 13 directement réalisé sur le premier carter 10 et un deuxième orifice 14 directement réalisé sur le deuxième carter 11. Le premier orifice 13 est directement raccordé à un embout 6a dans lequel est logé de manière coulissante la masselotte 8 du dispositif à cartouche explosive 6. Cet embout 6a peut former un élément constitutif du dispositif à cartouche explosive 6 ou alors former un élément constitutif du dispositif de transmission d'efforts 7. Cet embout 6a est directement monté fixe dans l'orifice 13 du premier carter 10 par exemple au moyen d'une goupille 15 qui traverse part en part le carter 10 pour venir coopérer avec l'embout 6a de manière à les solidariser entre eux.For this purpose, this force transmission device 7 comprises a body 9 formed by a first housing 10 and a second housing 11 which delimit between them a room 12. This inner chamber 12 of the body 9 extends between a first orifice 13 directly made on the first housing 10 and a second port 14 directly made on the second casing 11. The first port 13 is directly connected to a tip 6a in which is housed slidably the weight 8 of the device to explosive cartridge 6. This tip 6a can form an element constituent of the explosive cartridge device 6 or form a constituent element of the transmission device 7. This tip 6a is directly mounted fixed in the orifice 13 of the first housing 10 for example by means of a pin 15 which passes right through the housing 10 for come cooperate with the tip 6a so as to secure them between them.

Comme on peut le voir sur la figure 2, le deuxième carter 11 présente un fond 11a sur lequel est réalisé l'orifice 14, et à partir duquel s'étend une paroi annulaire 11b destinée à coopérer avec une paroi annulaire 10a du premier carter 10 pour former la chambre intérieure 12.Le premier carter 10 et le deuxième carter 11 sont fixés entre eux par tous moyens appropriés et notamment par exemple par vissage et/ou au moyen d'une goupille 16. As can be seen in Figure 2, the second casing 11 has a bottom 11a on which is made the orifice 14, and from which extends an annular wall 11b intended to cooperate with an annular wall 10a of first housing 10 to form the inner chamber 12.The first casing 10 and the second casing 11 are fixed between them by any appropriate means and in particular for example by screwing and / or by means of a pin 16.

Le dispositif de transmission d'efforts 7 comprend également un organe de percussion 17 qui se présente sensiblement sous la forme d'un arbre allongé qui comprend, d'une part, une première portion 18 logée dans la chambre intérieure 12 du corps 9 et qui présente un diamètre supérieur au deuxième orifice 14 du carter 11, et d'autre part, une deuxième portion cylindrique 19 creuse qui est solidaire de la première portion 18 et qui est montée coulissante dans le deuxième orifice 14 du carter 11. Cette deuxième portion cylindrique 19 présente une extrémité libre 19a destinée à venir en appui contre la partie la plus large des clavettes 4a, 4b formant le mors d'ancrage 4 tout en entourant l'extrémité du toron 2 qui fait saillie au-delà desdites clavettes 4a, 4b. La première portion 18 de l'organe de percussion 17 comprend également une paroi annulaire cylindrique 18a qui s'étend en direction du carter 10 et qui entoure un ressort de compression 20 directement interposé entre le carter 10 et la première portion 18 de l'organe de percussion 17. La première portion 18 de l'organe de percussion 17 comprend également un centreur 21 du ressort 20 qui est disposé en regard de la masselotte 8. Par ailleurs, des éléments d'amortissement 22, 23 sont disposés de part et d'autre de la chambre intérieure 12 du corps 9 de manière à amortir le déplacement de la première portion 18 de l'organe de percussion 17 à l'intérieur du corps 9.The force transmission device 7 comprises also a percussion organ 17 that presents itself substantially in the form of an elongate tree that includes, on the one hand, a first portion 18 housed in the chamber inside 12 of the body 9 and which has a diameter greater than the second orifice 14 of the housing 11, and other part, a second hollow cylindrical portion 19 which is integral with the first portion 18 and which is mounted sliding in the second orifice 14 of the housing 11. This second cylindrical portion 19 has a free end 19a intended to bear against the widest part keys 4a, 4b forming the anchor jaw 4 while surrounding the end of strand 2 which protrudes beyond said keys 4a, 4b. The first portion 18 of the percussion member 17 also comprises a wall cylindrical ring 18a which extends towards the casing 10 and surrounding a compression spring 20 directly interposed between the housing 10 and the first portion 18 of the percussion organ 17. The first portion 18 of the percussion member 17 also comprises a centralizer 21 of the spring 20 which is arranged opposite the weight 8. Moreover, damping elements 22, 23 are arranged on either side of the inner chamber 12 of the body 9 so as to dampen the displacement of the first portion 18 of the percussion member 17 within the body 9.

Lorsqu'un opérateur souhaite surbloquer le mors d'ancrage 4 dans l'évidement tronconique 5 du bloc d'ancrage 3 après avoir préalablement placé et enfoncé ledit mors d'ancrage 4 dans l'évidement tronconique 5, l'opérateur positionne tout d'abord le système de surblocage de telle sorte que l'extrémité libre 19a de l'organe de percussion 17 vienne au contact des clavettes 4a, 4b tout en entourant le toron 2. Cette mise en place du système de surblocage 1 sur le mors d'ancrage 4 a pour effet d'amener la paroi annulaire 18a de la première portion 18 de l'organe de percussion 17 en appui contre l'élément d'amortissement 23 et ce à l'encontre de la sollicitation exercée par le ressort de compression 20.When an operator wants to unlock the bit anchor 4 in the frustoconical recess 5 of the anchor block 3 after having previously placed and depressed said bit 4 in the frustoconical recess 5, the operator first positions the overblocking system of such so that the free end 19a of the percussion member 17 come into contact with the keys 4a, 4b while surrounding the strand 2. This implementation of the overclocking system 1 on the anchoring jaw 4 has the effect of bringing the annular wall 18a of the first portion 18 of the percussion member 17 in support against the damping element 23 and this to against the solicitation exercised by the compression 20.

L'opérateur n'a alors plus qu'à actionner le dispositif à cartouche explosive 6 en amorçant l'explosion de ladite cartouche qui peut être une cartouche explosive libérant un gaz à haute pression suite à l'amorçage de l'explosion afin de propulser la masselotte 8 contre le centreur 21 de la première portion 18 de l'organe de percussion 17. Cet organe de percussion 17 transmet alors automatiquement le choc produit par la masselotte 8 aux clavettes 4a, 4b du mors d'ancrage 4 de manière à l'amener dans une position de surblocage qui correspond à une position que le mors d'ancrage aurait trouvée lors du chargement maximal toléré par le toron 2, en garantissant ainsi une précontrainte radiale du toron 2.The operator then only has to operate the explosive cartridge device 6 by igniting the explosion of said cartridge which can be an explosive cartridge releasing a gas at high pressure following the priming of the explosion to propel the weight 8 against the centralizer 21 of the first portion 18 of the organ percussion 17. This percussion member 17 then transmits automatically the shock produced by the weight 8 to keys 4a, 4b of the anchoring jaw 4 so as to bring it in an overblock position that corresponds to a position that the anchor would have found during the maximum load tolerated by strand 2, ensuring thus a radial prestressing of the strand 2.

Cette opération de surblocage permet donc de dissocier la tenue du toron dans l'ancrage et la tension du toron, ce qui peut se révéler avantageux dans le cas où la tension du toron 2 peut être fortement amoindrie voire annulée, au cours du service même du toron : une telle situation pouvant se produire par exemple lors de la réception d'un choc par un toron de pont suspendu, le choc peut par exemple être provoqué par un séisme, par une tornade ou par la perte de contrôle d'un véhicule poids lourds.This overblocking operation therefore makes it possible to dissociate the resistance of the strand in the anchorage and the tension of the strand, which may be advantageous in the case where the 2 strand voltage can be greatly reduced or canceled, during the service of the strand itself: such a situation that may occur for example during the receiving a shock by a suspension bridge strand, the shock can be caused for example by an earthquake, a tornado or by the loss of control of a vehicle weight heavy.

Par ailleurs, le choix de la cartouche explosive et de l'organe de percussion 17 permet d'adapter et de choisir l'effort calibré transmis au mors d'ancrage afin de le figer dans sa position dite de surblocage. Par ailleurs, bien évidement les dimensions de la masselotte et de l'organe de répercussion 17 peuvent être choisies de manière à éviter leur flambement ou mattage.Moreover, the choice of the explosive cartridge and of the percussion organ 17 allows to adapt and choose the calibrated force transmitted to the anchor jaw in order to freeze it in its so-called overblocking position. By the way, well obviously the dimensions of the weight and the organ of repercussion 17 can be chosen so as to avoid their buckling or matting.

Claims (8)

Procédé de surblocage d'au moins un toron (2) dans un bloc d'ancrage (3) par serrage radial du toron (2) par un mors tronconique (4) qui entoure ledit toron (2) et qui est logé dans un évidement tronconique (5) de forme complémentaire réalisé dans le bloc (3), caractérisé en ce qu'il comprend les étapes suivantes : on utilise un dispositif à cartouche explosive (6) comprenant une masselotte (8) destinée à être propulsée par l'explosion de la cartouche, on dispose un dispositif de transmission d'efforts (7) entre la masselotte du dispositif à cartouche explosive (6) et le mors tronconique (4), et on actionne la cartouche explosive pour propulser la masselotte (8) contre le dispositif de transmission d'efforts (7) qui appuie à son tour contre le mors tronconique (4) pour l'enfoncer dans l'évidement tronconique (5) du bloc d'ancrage (3) en provoquant un surblocage du toron (2) par serrage radial du mors tronconique (4). Method for locking at least one strand (2) in an anchoring block (3) by radial clamping of the strand (2) by a frustoconical jaw (4) which surrounds said strand (2) and which is housed in a recess frustoconical ring (5) of complementary shape made in the block (3), characterized in that it comprises the following steps: an explosive cartridge device (6) is used comprising a flyweight (8) intended to be propelled by the explosion of the cartridge, a force transmission device (7) is arranged between the weight of the explosive cartridge device (6) and the frustoconical jaw (4), and the explosive cartridge is actuated to propel the counterweight (8) against the force transmission device (7) which in turn presses against the frustoconical jaw (4) to drive it into the frustoconical recess (5) of the block anchoring (3) causing an overlocking of the strand (2) by radial clamping of the frustoconical jaw (4). Procédé selon la revendication 1, dans lequel on utilise un dispositif à cartouche explosive libérant un gaz à haute pression.The process of claim 1, wherein uses an explosive cartridge device releasing a gas at high pressure. Procédé selon l'une ou l'autre des revendications 1 et 2, on utilise un dispositif de transmission d'efforts (7) qui comprend : un corps (9) délimitant une chambre intérieure (12) qui s'étend entre un premier orifice (13) raccordé à un embout (6a) du dispositif à cartouche explosive (6) à partir duquel est propulsée la masselotte (8) et un deuxième orifice (14), et un organe de percussion (17) qui comprend, d'une part, une première portion (18) logée dans la chambre intérieure (12) du corps (9) et qui présente un diamètre supérieur au deuxième orifice (14), ladite première portion (18) étant destinée à être percutée par la masselotte (8), et d'autre part, une deuxième portion (19) solidaire de la première portion (18) et qui est montée de manière coulissante dans le deuxième orifice (14), ladite deuxième portion (19) présentant une extrémité libre (19a) destinée à coopérer avec le mors tronconique (4). Method according to either of Claims 1 and 2, using a force transmission device (7) which comprises: a body (9) defining an inner chamber (12) extending between a first orifice (13) connected to a tip (6a) of the explosive cartridge device (6) from which the flyweight (8) is propelled and a second orifice (14), and a percussion member (17) which comprises, on the one hand, a first portion (18) housed in the inner chamber (12) of the body (9) and which has a larger diameter than the second orifice (14), said first portion (18) being intended to be struck by the weight (8), and secondly, a second portion (19) integral with the first portion (18) and which is slidably mounted in the second orifice (14), said second portion (19) having a free end (19a) for cooperating with the frustoconical jaw (4). Procédé selon la revendication 3, dans lequel un ressort de compression (20) est interposé entre la première portion (18) de l'organe de percussion (17) et là chambre intérieure (12) du corps (9).The method of claim 3, wherein a compression spring (20) is interposed between the first portion (18) of the percussion member (17) and the chamber interior (12) of the body (9). Système de surblocage d'au moins un toron (2) dans un bloc d'ancrage (3) par serrage radial du toron (2) par un mors tronconique (4) qui entoure ledit toron (2) et qui est logé dans un évidement tronconique (5) de forme complémentaire réalisé dans le bloc (3), caractérisé en ce qu'il comprend : un dispositif à cartouche explosive (6) comprenant une masselotte (8) destinée à être propulsée par l'explosion de la cartouche, et un dispositif de transmission d'efforts (7) destiné à coopérer avec la masselotte (8) du dispositif à cartouche explosive (6) pour permettre lors de l'explosion de la cartouche explosive une propulsion de la masselotte (8) contre ledit dispositif de transmission d'efforts (7) qui appuie à son tour contre le mors tronconique (4) pour l'enfoncer dans l'évidement tronconique (5) du bloc d'ancrage (3) en provoquant un surblocage du toron (2) par serrage radial du mors tronconique (4). System for over-locking at least one strand (2) in an anchor block (3) by radial clamping of the strand (2) by a frustoconical jaw (4) which surrounds said strand (2) and which is housed in a recess frustoconical ring (5) of complementary shape made in the block (3), characterized in that it comprises: an explosive cartridge device (6) comprising a weight (8) to be propelled by the explosion of the cartridge, and a force transmission device (7) for cooperating with the weight (8) of the explosive cartridge device (6) to enable the explosion of the explosive cartridge to propel the weight (8) against said device transmission of forces (7) which in turn presses against the frustoconical jaw (4) to drive it into the frustoconical recess (5) of the anchoring block (3), causing tightening of the strand (2) by clamping radial of the frustoconical jaw (4). Système de surblocage selon la revendication 5, dans lequel le dispositif de transmission d'efforts (7) comprend : un corps (9) délimitant une chambre intérieure (12) qui s'étend entre un premier orifice (13) raccordé à un embout (6a) du dispositif à cartouche explosive (6) à partir duquel est propulsée la masselotte (8) et un deuxième orifice (14), et un organe de percussion (17) qui comprend, d'une part, une première portion (18) logée dans la chambre intérieure (12) du corps (9) et qui présente un diamètre supérieur au deuxième orifice (14), ladite première portion (18) étant destinée à être percutée par la masselotte (8), et d'autre part, une deuxième portion (19) solidaire de la première portion (18) et qui est montée de manière coulissante dans le deuxième orifice (14), ladite deuxième portion (19) présentant une extrémité libre (19a) destinée à coopérer avec le mors tronconique (14). An overlock system according to claim 5, wherein the force transmission device (7) comprises: a body (9) defining an inner chamber (12) extending between a first orifice (13) connected to a tip (6a) of the explosive cartridge device (6) from which the flyweight (8) is propelled and a second orifice (14), and a percussion member (17) which comprises, on the one hand, a first portion (18) housed in the inner chamber (12) of the body (9) and which has a larger diameter than the second orifice (14), said first portion (18) being intended to be struck by the weight (8), and secondly, a second portion (19) integral with the first portion (18) and which is slidably mounted in the second orifice (14), said second portion (19) having a free end (19a) for cooperating with the frustoconical jaw (14). Système de surblocage selon la revendication 6, dans lequel un ressort de compression (20) est interposé entre la première portion (18) de l'organe de percussion (17) et la chambre intérieure (12) du corps (9).Overblock system according to claim 6, in which a compression spring (20) is interposed between the first portion (18) of the percussion member (17) and the inner chamber (12) of the body (9). Système selon l'une ou l'autre des revendications 6 et 7, dans lequel le corps (9) du dispositif de transmission d'efforts (7) est formé par un premier carter (10) qui comprend le premier orifice (13) et par un deuxième carter (11) solidaire dudit premier carter (10) et qui comprend le deuxième orifice (14).System according to one or other of the claims 6 and 7, wherein the body (9) of the transmission of forces (7) is formed by a first housing (10) which comprises the first orifice (13) and a second housing (11) integral with said first housing (10) and which comprises the second orifice (14).
EP04291221A 2003-05-26 2004-05-12 Process for blocking of at least one strand in an anchor block and blocking system for at least one strand in an anchor block Expired - Lifetime EP1482102B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0306319 2003-05-26
FR0306319A FR2855542B1 (en) 2003-05-26 2003-05-26 METHOD FOR OVERLOCKING AT LEAST ONE TORON IN AN ANCHOR BLOCK AND SYSTEM FOR OVERLOCKING AT LEAST ONE TORON IN AN ANCHOR BLOCK

Publications (2)

Publication Number Publication Date
EP1482102A1 true EP1482102A1 (en) 2004-12-01
EP1482102B1 EP1482102B1 (en) 2007-08-15

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EP04291221A Expired - Lifetime EP1482102B1 (en) 2003-05-26 2004-05-12 Process for blocking of at least one strand in an anchor block and blocking system for at least one strand in an anchor block

Country Status (13)

Country Link
US (1) US7614134B2 (en)
EP (1) EP1482102B1 (en)
JP (1) JP4593149B2 (en)
KR (1) KR101028866B1 (en)
CN (1) CN100359114C (en)
AU (1) AU2004202298B2 (en)
DK (1) DK1482102T3 (en)
ES (1) ES2290641T3 (en)
FR (1) FR2855542B1 (en)
HK (1) HK1068936A1 (en)
MX (1) MXPA04005013A (en)
MY (1) MY141029A (en)
PT (1) PT1482102E (en)

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Also Published As

Publication number Publication date
DK1482102T3 (en) 2007-12-17
JP4593149B2 (en) 2010-12-08
FR2855542B1 (en) 2005-08-05
HK1068936A1 (en) 2005-05-06
ES2290641T3 (en) 2008-02-16
US20050005570A1 (en) 2005-01-13
KR20040101942A (en) 2004-12-03
MXPA04005013A (en) 2005-04-25
US7614134B2 (en) 2009-11-10
CN1572992A (en) 2005-02-02
CN100359114C (en) 2008-01-02
MY141029A (en) 2010-02-25
AU2004202298B2 (en) 2008-05-15
EP1482102B1 (en) 2007-08-15
AU2004202298A1 (en) 2004-12-16
PT1482102E (en) 2007-11-09
JP2004353443A (en) 2004-12-16
FR2855542A1 (en) 2004-12-03
KR101028866B1 (en) 2011-04-12

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