EP1482102B1 - 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
EP1482102B1
EP1482102B1 EP04291221A EP04291221A EP1482102B1 EP 1482102 B1 EP1482102 B1 EP 1482102B1 EP 04291221 A EP04291221 A EP 04291221A EP 04291221 A EP04291221 A EP 04291221A EP 1482102 B1 EP1482102 B1 EP 1482102B1
Authority
EP
European Patent Office
Prior art keywords
strand
orifice
intended
jaw
frustoconical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP04291221A
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German (de)
French (fr)
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EP1482102A1 (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
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Freyssinet SAS
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Publication of EP1482102A1 publication Critical patent/EP1482102A1/en
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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 at least one strand in an anchor block and to a system for overblocking at least one strand in an anchor block.
  • the invention relates to a method of overblocking at least one strand in an anchoring 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 formed in the anchor block.
  • a strand is constituted by a wire or a plurality of twisted son intended to be stretched in particular to ensure the prestressing of a concrete body or the suspension of a structure such as a bridge (stay).
  • the blocking or prior clamping of the strand before its blocking in the anchor block is provided by the pulling of the cable itself and at least partly by applying an axial thrust on a large base of said jaw.
  • This axial thrust makes it possible to ensure cone-cone clamping of said jaw with the anchor block, thereby causing radial tightening of the strand.
  • a security operation called an overlocking operation, makes it possible to guarantee that the bit is held around the strand during the life of the structure on which said strand is stretched. .
  • This blocking operation is currently performed by means of hammer strikes carried directly on the large base of said jaw to move a few millimeters in its housing to ensure a radial prestressing on the strand. Nevertheless, this overblocking operation carried out by an operator striking with hammer on the jaw does not provide an accurate guarantee that the displacement of the anchor jaw in its housing has been sufficient for said jaw to find a so-called final position that is say a position that said jaw is intended to find during the maximum load supported by said strand.
  • the present invention is intended in particular to improve these overlocking methods in particular so that the operator is sure that said anchor jaw has reached its position of overlocking.
  • FIG. 1 represents an overblocking system 1 adapted to overlock at least one strand 2 in an anchoring block 3 by radial clamping of the strand by an anchoring jaw 4 which surrounds said strand 2 and which is housed in a frustoconical recess 5 made in the anchor block 3.
  • the strand 2 may be composed of a single strand or a plurality of twisted strands.
  • the anchoring jaw 4 may be formed by a slotted anchor jaw or by a plurality of two or so substantially semi-shaped keys 4a, 4b, for example. cylindrical and frustoconical.
  • the widest end of the anchoring jaw 4 is axially projecting on the face 3a of the anchoring block 3.
  • the free end of the strand 2 also extends beyond the widest portion of the jaw. anchorage 4.
  • the radial clamping of the strand 2 by the anchoring jaw 4 is ensured by a wedge effect by urging this anchoring jaw 4 and thus the keys 4a, 4b to the axial depression in the frustoconical recess 5.
  • the axial stress can be generated by the same tension of the strand 2 because of the friction between the strand and the inner face of the anchoring jaw 4, or by pressing axially this anchoring jaw 4 in the recess 5 while the tension of the strand 2 is zero.
  • a security operation makes it possible to guarantee the holding of the anchoring jaw 4 and thus of the keys 4a, 4b during the life of the the work.
  • This overlock makes it possible to guarantee radial prestressing on the strand 2 by depressing the anchoring jaw 4, this preload on the strand 2 substantially corresponding to the final position of the keys 4a, 4b, that is to say the position that they would find during the maximum loading to bear by the strand 2.
  • the blocking system comprises, as can be seen in FIG. 1, an explosive cartridge device 6 as well as a force transmission device 7 directly disposed between the explosive cartridge device. 6 and the anchoring jaw 4 previously pressed into the frustoconical recess 5 of the anchoring block 3.
  • the explosive cartridge device 6 may for example be formed by an automatic pistol with an automatic or manually replaceable explosive cartridge, which comprises (FIG. 2) a counterweight 8 intended to be propelled during the explosion of the explosive cartridge.
  • this device with an explosive cartridge 6 can be formed by an automatic cartridge gun marketed by HILTI, in particular under the reference DXA 40.
  • the force transmission device 7 is for its part intended to cooperate with the flyweight 8 of the explosive cartridge device 6 to allow the explosion of this explosive cartridge propulsion of the weight against the force transmission device which in turn press against the frustoconical jaw 4 to push it into a position of overlocking 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 an inner chamber 12.
  • This inner chamber 12 of the body 9 extends between a first orifice 13 directly on the first housing 10 and a second orifice 14 directly on the second housing 11.
  • the first port 13 is directly connected to a nozzle 6a in which is slidably housed the weight 8 of the explosive cartridge device 6.
  • This 6a end piece may form a constituent element of the explosive cartridge device 6 or may form a constituent element of the force transmission device 7.
  • This nozzle 6a is directly fixedly mounted in the orifice 13 of the first housing 10 for example by means of a pin 15 which passes through the casing 10 to cooperate with the end piece 6a so as to secure them together.
  • the second casing 11 has a bottom 11a on which the orifice 14 is made, and from which extends an annular wall 11b intended to cooperate with an annular wall 10a of the first casing 10 to form the inner chamber 12.
  • the first housing 10 and the second housing 11 are fixed together by any appropriate means and in particular for example by screwing and / or by means of a pin 16.
  • the force transmission device 7 also comprises a percussion member 17 which is substantially in the form of an elongate shaft which comprises, on the one hand, a first portion 18 housed in the inner chamber 12 of the body 9 and which has a diameter greater than the second orifice 14 of the housing 11, and secondly, a second hollow cylindrical portion 19 which is integral with the first portion 18 and which is slidably mounted 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 of the keys 4a, 4b forming the anchoring jaw 4 while surrounding the end of the strand 2 which projects beyond said keys 4a, 4b.
  • the first portion 18 of the percussion member 17 also comprises a cylindrical annular wall 18a which extends towards the housing 10 and which surrounds a compression spring 20 directly interposed between the housing 10 and the first portion 18 of the body 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.
  • the damping elements 22, 23 are arranged on both sides. other of the inner chamber 12 of the body 9 so as to damp the displacement of the first portion 18 of the percussion member 17 inside the body 9.
  • This percussion member 17 then automatically transmits the shock produced by the weight 8 to the keys 4a, 4b of the anchoring jaw 4 so as to bring to a position of overlock which corresponds to a position that the anchor jaw would have found during the maximum load tolerated by the strand 2, thereby ensuring a radial prestressing of the strand 2.
  • This overblocking operation thus makes it possible to dissociate the resistance of the strand in the anchoring and the tension of the strand, which can be advantageous in the case where the tension of the strand 2 can be greatly diminished or even canceled during the service of the strand.
  • strand such a situation may occur for example when receiving a shock by a suspension bridge strand, the shock may for example be caused by an earthquake, a tornado or the loss of control of a vehicle weight heavy.
  • the choice of the explosive cartridge and the percussion member 17 makes it possible to adapt and select the calibrated force transmitted to the anchoring jaw in order to fix it in its so-called overblocking position.
  • the dimensions of the weight and the organ of repercussion 17 may be chosen so as to avoid 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)
  • Portable Nailing Machines And Staplers (AREA)
  • Bridges Or Land Bridges (AREA)
  • Piles And Underground Anchors (AREA)
  • Working Measures On Existing Buildindgs (AREA)

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 at least one strand in an anchor block and to a system for overblocking at least one strand in an anchor block.

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 of overblocking at least one strand in an anchoring 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 formed 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 son intended to be stretched in particular to ensure 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 clamping of the strand before its blocking in the anchor block is provided by the pulling of the cable itself and at least partly by applying an axial thrust on a large base of said jaw. This axial thrust makes it possible to ensure cone-cone clamping of said jaw with the anchor block, thereby causing radial tightening of the strand. In order to guarantee a non-slip of the strand with respect to the jaw which surrounds it, a security operation, called an overlocking operation, makes it possible to guarantee that the bit is held around the strand during the life of the structure on which said strand is stretched. .

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 blocking operation is currently performed by means of hammer strikes carried directly on the large base of said jaw to move a few millimeters in its housing to ensure a radial prestressing on the strand. Nevertheless, this overblocking operation carried out by an operator striking with hammer on the jaw does not provide an accurate guarantee that the displacement of the anchor jaw in its housing has been sufficient for said jaw to find a so-called final position that is say a position that said jaw is intended to find during the maximum load 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.Moreover, this operation of securing by means of hammer strokes is generally not suitable when said anchoring jaw is difficult to access, especially in the structure structures cramped.

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 improve these overlocking methods in particular so that the operator is sure that said anchor jaw has reached its position of overlocking.

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 anchoring 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 anchoring 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 allow, during the explosion of the explosive cartridge, propulsion of the weight against said force transmission device which in turn supports against the frustoconical jaw to drive it into the frustoconical recess of the anchor block by causing a strand overlock 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 apparaîtront 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 advantages of the invention will become apparent from the following description of one of its embodiments, given by way of non-limiting example, 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 overblocking system 1 adapted to overlock at least one strand 2 in an anchoring block 3 by radial clamping of the strand by an anchoring jaw 4 which surrounds said strand 2 and which is housed in a frustoconical recess 5 made in the anchor block 3. The strand 2 may 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 FIG. 2, the anchoring jaw 4 may be formed by a slotted anchor jaw or by a plurality of two or so substantially semi-shaped keys 4a, 4b, for example. cylindrical and frustoconical.

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 narrow end 5a of the frustoconical recess 5 made in the anchor block 3 traversed right through by the strand 2. The widest end of the anchoring jaw 4 is axially projecting on the face 3a of the anchoring block 3. The free end of the strand 2 also extends beyond the widest portion of the jaw. anchorage 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.The radial clamping of the strand 2 by the anchoring jaw 4 is ensured by a wedge effect by urging this anchoring jaw 4 and thus the keys 4a, 4b to the axial depression in the frustoconical recess 5. During the placing the anchoring jaw 4 in the frustoconical recess 5 of the anchoring block 3, the axial stress can be generated by the same tension of the strand 2 because of the friction between the strand and the inner face of the anchoring jaw 4, or by pressing axially this anchoring jaw 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 the strand 2 through the anchoring block 3, a security operation, called overlocking, makes it possible to guarantee the holding of the anchoring jaw 4 and thus of the keys 4a, 4b during the life of the the work. This overlock makes it possible to guarantee radial prestressing on the strand 2 by depressing the anchoring jaw 4, this preload on the strand 2 substantially corresponding to the final position of the keys 4a, 4b, that is to say the position that they would find during the maximum loading 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 blocking system according to the invention comprises, as can be seen in FIG. 1, an explosive cartridge device 6 as well as a force transmission device 7 directly disposed between the explosive cartridge device. 6 and the anchoring jaw 4 previously pressed into the frustoconical recess 5 of the anchoring block 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 may for example be formed by an automatic pistol with an automatic or manually replaceable explosive cartridge, which comprises (FIG. 2) a counterweight 8 intended to be propelled during the explosion of the explosive cartridge. By way of example, this device with an explosive cartridge 6 can be formed by an automatic cartridge gun marketed by HILTI, in particular 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 for its part intended to cooperate with the flyweight 8 of the explosive cartridge device 6 to allow the explosion of this explosive cartridge propulsion of the weight against the force transmission device which in turn press against the frustoconical jaw 4 to push it into a position of overlocking 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 an inner chamber 12. This inner chamber 12 of the body 9 extends between a first orifice 13 directly on the first housing 10 and a second orifice 14 directly on the second housing 11. The first port 13 is directly connected to a nozzle 6a in which is slidably housed the weight 8 of the explosive cartridge device 6. This 6a end piece may form a constituent element of the explosive cartridge device 6 or may form a constituent element of the force transmission device 7. This nozzle 6a is directly fixedly mounted in the orifice 13 of the first housing 10 for example by means of a pin 15 which passes through the casing 10 to cooperate with the end piece 6a so as to secure them together.

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 FIG. 2, the second casing 11 has a bottom 11a on which the orifice 14 is made, and from which extends an annular wall 11b intended to cooperate with an annular wall 10a of the first casing 10 to form the inner chamber 12.The first housing 10 and the second housing 11 are fixed together 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 also comprises a percussion member 17 which is substantially in the form of an elongate shaft which comprises, on the one hand, a first portion 18 housed in the inner chamber 12 of the body 9 and which has a diameter greater than the second orifice 14 of the housing 11, and secondly, a second hollow cylindrical portion 19 which is integral with the first portion 18 and which is slidably mounted 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 of the keys 4a, 4b forming the anchoring jaw 4 while surrounding the end of the strand 2 which projects beyond said keys 4a, 4b. The first portion 18 of the percussion member 17 also comprises a cylindrical annular wall 18a which extends towards the housing 10 and which surrounds a compression spring 20 directly interposed between the housing 10 and the first portion 18 of the body 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, the damping elements 22, 23 are arranged on both sides. other of the inner chamber 12 of the body 9 so as to damp the displacement of the first portion 18 of the percussion member 17 inside 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 wishes to overlock the anchoring jaw 4 in the frustoconical recess 5 of the anchoring block 3 after having previously placed and depressed said anchoring jaw 4 in the frustoconical recess 5, the operator positions all of first the blocking system so that the free end 19a of the percussion member 17 comes into contact with the keys 4a, 4b while surrounding the strand 2. This establishment of the system of overlock 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 abutment against the damping element 23 and this against the bias exerted by the compression spring 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 actuate the explosive cartridge device 6 by initiating the explosion of said cartridge which can be an explosive cartridge releasing a gas at high pressure following the initiation of the explosion in order to propel the flyweight 8 against the centralizer 21 of the first portion 18 of the percussion member 17. This percussion member 17 then automatically transmits the shock produced by the weight 8 to the keys 4a, 4b of the anchoring jaw 4 so as to bring to a position of overlock which corresponds to a position that the anchor jaw would have found during the maximum load tolerated by the strand 2, thereby ensuring 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 thus makes it possible to dissociate the resistance of the strand in the anchoring and the tension of the strand, which can be advantageous in the case where the tension of the strand 2 can be greatly diminished or even canceled during the service of the strand. strand: such a situation may occur for example when receiving a shock by a suspension bridge strand, the shock may for example be caused by an earthquake, a tornado or 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 the percussion member 17 makes it possible to adapt and select the calibrated force transmitted to the anchoring jaw in order to fix it in its so-called overblocking position. Moreover, of course the dimensions of the weight and the organ of repercussion 17 may be chosen so as to avoid buckling or matting.

Claims (8)

  1. Method of overlocking at least one strand (2) in an anchoring block (3) by radially clamping the strand (2) by a frustoconical jaw (4) which surrounds the said strand (2) and which is housed in a frustoconical recess (5) of complementary shape made in the block (3), characterized in that it comprises the following steps:
    - an explosive cartridge device (6) comprising an inertia block (8) intended to be propelled by the explosion of the cartridge is used,
    - a force transmission device (7) is arranged between the inertia block (8) of the explosive cartridge device (6) and the frustoconical jaw (4), and
    - the explosive cartridge (6) is activated to propel the inertia block (8) against the force transmission device (7), which in turn pushes against the frustoconical jaw (4) to drive it into the frustoconical recess (5) in the anchoring block (3), thereby causing the strand (2) to be overlocked by radial clamping of the frustoconical jaw (4).
  2. Method according to either one of Claims 1 or 2, in which an explosive cartridge (6) device releasing a high-pressure gas is used.
  3. Method according to Claim 1, in which use is made of a force transmission device (7) which comprises:
    - a body (9) defining an inner chamber (12) which extends between a first orifice (13) connected to an end-piece (6a) of the explosive cartridge device (6), from which the inertia block (8) is propelled, and a second orifice (14), and
    - a percussion member (17) which comprises, on the one hand, a first portion (18) which is housed in the inner chamber (12) of the body and which has a larger diameter than the second orifice (14), said first portion (18) being intended to be struck by the inertia block (8), and, on the other hand, a second portion (19) integral with the first portion (18) and mounted in a sliding manner in the second orifice (14), said second portion (19) having a free end (19a) intended to interact with the frustoconical jaw (4).
  4. Method according to Claim 3, 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.
  5. System for overlocking at least one strand in an anchoring block (3) by radially clamping the strand (2) by a frustoconical jaw (4)which is intended to surround the said strand (2) and which is intended to be housed in a frustoconical recess (5) of complementary shape made in the block (3), characterized in that it comprises:
    - an explosive cartridge device (6) comprising an inertia block (8) intended to be propelled by the explosion of the cartridge, and
    - a force transmission device (7) intended to interact with the inertia block (8) of the explosive cartridge device (6) to allow, upon the explosion of the explosive cartridge, the inertia block (8) to be propelled against said force transmission device (7), which in turn is intended to push against the frustoconical jaw (4) to drive it into the frustoconical recess (5) in the anchoring block (3), thereby causing the strand (2) to be overlocked by radial clamping of the frustoconical jaw (4).
  6. Overlocking system according to Claim 5, in which the force transmission device comprises:
    - a body (9) defining an inner chamber (12) which extends between a first orifice (13) connected to an end-piece (6a) of the explosive cartridge device (6), from which the inertia block (8) is intended to be propelled, and a second orifice (14), and
    - a percussion member (17) which comprises, on the one hand, a first portion (18) which is 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 inertia block (8), and, on the other hand, a second portion (19) integral with the first portion (18) and mounted in a sliding manner in the second orifice (14), said second portion (19) having a free end (19a) intended to interact with the frustoconical jaw (4).
  7. Overlocking 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).
  8. System according to either one of Claims 6 and 7, in which the body (9) of the force transmission device (7) is formed by a first casing (10) which comprises the first orifice (13) and by a second casing (11) which is integral with said first casing (10) and 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)

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

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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)
MX (1) MXPA04005013A (en)
MY (1) MY141029A (en)
PT (1) PT1482102E (en)

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PT1482102E (en) 2007-11-09
KR101028866B1 (en) 2011-04-12
JP2004353443A (en) 2004-12-16
MXPA04005013A (en) 2005-04-25
US7614134B2 (en) 2009-11-10
AU2004202298B2 (en) 2008-05-15
FR2855542B1 (en) 2005-08-05
EP1482102A1 (en) 2004-12-01
HK1068936A1 (en) 2005-05-06
CN1572992A (en) 2005-02-02
DK1482102T3 (en) 2007-12-17
MY141029A (en) 2010-02-25
US20050005570A1 (en) 2005-01-13
JP4593149B2 (en) 2010-12-08
FR2855542A1 (en) 2004-12-03
KR20040101942A (en) 2004-12-03
ES2290641T3 (en) 2008-02-16
AU2004202298A1 (en) 2004-12-16
CN100359114C (en) 2008-01-02

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