EP0021902A1 - Process for securing insulating rods in attachment fittings and apparatus for the realization thereof - Google Patents

Process for securing insulating rods in attachment fittings and apparatus for the realization thereof Download PDF

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Publication number
EP0021902A1
EP0021902A1 EP80400780A EP80400780A EP0021902A1 EP 0021902 A1 EP0021902 A1 EP 0021902A1 EP 80400780 A EP80400780 A EP 80400780A EP 80400780 A EP80400780 A EP 80400780A EP 0021902 A1 EP0021902 A1 EP 0021902A1
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EP
European Patent Office
Prior art keywords
fitting
rod
fixing piece
insulating material
hole
Prior art date
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Ceased
Application number
EP80400780A
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German (de)
French (fr)
Inventor
Pierre Viennot
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Individual
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Individual
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/38—Fittings, e.g. caps; Fastenings therefor
    • 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
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1043—Subsequent to assembly
    • 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
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/108—Flash, trim or excess removal
    • 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
    • Y10T403/00—Joints and connections
    • Y10T403/47—Molded joint
    • Y10T403/471—And independent connection
    • 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
    • Y10T403/00—Joints and connections
    • Y10T403/47—Molded joint
    • Y10T403/472—Molded joint including mechanical interlock
    • 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
    • Y10T403/00—Joints and connections
    • Y10T403/47—Molded joint
    • Y10T403/473—Socket or open cup for bonding material

Definitions

  • the present invention relates to a method for securing rods of insulating material in attachment fittings, a device for its implementation and the application of the method and the device to the insulator rods and their attachment fittings.
  • connection is very often unsatisfactory, especially because of the nature of the components to be combined, namely, on the one hand, a rod made of insulating material and, on the other hand, a metal fitting.
  • US Patent No. 3,672,712 describes a structure for securing the end of a fiberglass element to a frame.
  • the end of the fiberglass element on which the reinforcement must be secured is divided into four equal sections.
  • a central opening is provided to facilitate the introduction of resin between the sections.
  • Patent DE n ° 1.074.688 describes the joining of the ceramic or similar envelope of an insulator with a core constituted by several rods of hardened resin based on glass fibers by means of a filling material (glue) .
  • Patent CH No. 571,267 describes a method for anchoring the end of a rod of synthetic resin reinforced with fibers in a frame, method according to which the end of the rod is heated until obtaining - '' a weakening of the synthetic resin-lining fibers connection, we proceed to a widening in all directions and to the anchoring by filling the slots with the synthetic resin which hardens.
  • DE Patent No. 1,159,531 describes an insulator consisting of a ceramic shell and a core (rod) of synthetic resin reinforced with fibers of glass.
  • the space between the core and the envelope is filled with a liquid medium or in the form of a paste (glue).
  • a blocking member is applied against the rod to prevent it from rotating.
  • the object of the present invention is to eliminate the aforementioned drawbacks and it makes it possible to subject an insulator rod to an attachment fitting according to a secure, effective, very resistant and durable fixing.
  • the method according to the present invention is very simple to carry out and is very economical.
  • the method for securing rods of insulating material in attachment fittings is characterized in that it consists in introducing a rod provided with a hole and a slot intended to reduce the force necessary without causing: the spacing of the end of the rod in a fitting also provided with a blind hole, to place a fixing piece comprising a channel in the blind hole of the fitting, to make the end of said fixing part in the hole of the rod which, under the stress of the cone of entry of this fixing part, deviates and comes to be pressed on a notable portion of the periphery of the conical bore of the fitting, to proceed tamping, once this is ensured, from the inside of the fitting through the channel of the fixing piece, with a resin of high mechanical resistance, zero shrinkage and expansion coefficient identical to that of the metal constituting the fitting which, after polymerization, forms with the rod, a rigid block secured to the fitting, the undercut of which opposes the extraction of the rod even under high stresses, and to level the fixing piece flush with the fitting
  • the hole in the insulator rod is inserted into the axis and the extension of the blind hole in the fitting.
  • the fixing piece is placed in the blind hole of the fitting by continuous pressure or repeated shocks.
  • the interior of the fitting is stuffed by vacuum suction and then by injection of a resin, this resin being an epoxy resin or any similar suitable adhesive.
  • the present invention also relates to a device for anchoring rods of insulating material in attachment fittings allowing the implementation of the aforementioned method, device which comprises a rod of insulating material of high tensile strength consisting of filamentary glass / epoxy resin, a metal fitting with internal geometry ensuring a significant undercut and a third metal part of fixation...
  • FIG. 1 a top view of an insulator rod 1 provided with a hole 2 with a diameter of the order of 6mm and with a slot 3.
  • This rod l made of insulating material with high tensile strength, is, for example, filamentary glass and epoxy resin.
  • Figure 2 shows an exploded sectional view of the three constituent elements of the anchoring device of the invention for the implementation of the method.
  • the rod l provided with a hole 2 and a slot, is placed in the axis of the hooking fitting 4.
  • This fitting 4 has a blind hole 5 on one side. It is a metal fitting with internal geometry ensuring a significant undercut.
  • the diameter of the blind hole 5 can be, for example, about 10 mm.
  • the internal part of the fitting 4 has a frustoconical shape 6.
  • the third element of the anchoring device is constituted by a fixing piece 7.
  • This fixing piece 7 is a hollow pin comprising a channel 8. Its upper part 9 ′ has a diameter corresponding to that of the blind hole 5 of the fitting 4 while its end 9 is frustoconical.
  • the expression "stuffing of the interior of the fitting” means that a relatively high vacuum is first applied using any suitable means, not shown, and well known to specialists in this field. Then, after this application, a suitable resin is injected inside the fitting 4 via the channel 8. As a result, no bubbles are formed which are harmful to the joining operation and consequently the connection is very rigid and very reliable.
  • Figure 3 shows the assembled elements and the connection obtained after the implementation of the method according to the present invention. This figure illustrates particularly well the securing of the rod 1 in the attachment fitting 4 and the location of the epoxy resin 10.
  • the device for carrying out the process of the invention is of a very simple and very economical design and that the components are simply a rod 1 made of insulating material of high tensile strength such as, for example, a material made of filamentary glass and epoxy resin, a metal fitting 4 of internal geometry ensuring a significant undercut, and a metal fixing part 7. To improve the connection, the parts undergo mechanical machining.
  • the method and the device according to the present invention find a particular application for securing insulator rods to their attachment fittings; however, it is possible to envisage other applications.

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  • Insulators (AREA)
  • Standing Axle, Rod, Or Tube Structures Coupled By Welding, Adhesion, Or Deposition (AREA)

Abstract

Le dispositif comprend une tige 1 en matériau isolant de résistance élevée à la traction, une ferrure métallique 4 de géométrie intérieure assurant une importante contre-dépouille, et une troisième pièce métallique de fixation 7. Application aux tiges d'isolateurs et à leurs ferrures d'accrochage.The device comprises a rod 1 made of insulating material with high tensile strength, a metal fitting 4 of internal geometry ensuring a large undercut, and a third metal fixing part 7. Application to insulator rods and their fittings d 'hanging.

Description

La présente invention concerne un procédé d'assujettissement de tiges en matériau isolant dans des ferrures d'accrochage,un dispositif pour sa mise en oeuvre et l'application du procédé et du dispositif aux tiges d'isolateurs et à leurs ferrures d'accrochage.The present invention relates to a method for securing rods of insulating material in attachment fittings, a device for its implementation and the application of the method and the device to the insulator rods and their attachment fittings.

Dans la technique antérieure pour solidariser une tige d'isolateur à une ferrure d'accrochage,on réalise habituellement le procédé d'ancrage en effectuant un emmanchement à force.In the prior art for securing an insulator rod to a hooking fitting, the anchoring process is usually carried out by force fitting.

Une telle liaison est bien souvent insatisfaisante, surtout en raison de la nature des composants à associer, à savoir,d'une part,une tige en matériau isolant et, d'autre part,une ferrure métallique.Such a connection is very often unsatisfactory, especially because of the nature of the components to be combined, namely, on the one hand, a rod made of insulating material and, on the other hand, a metal fitting.

Plus récemment,on a essayé de réaliser une telle liaison par collage en imprégnant la tige en matériau isolant d'une couche de colle,mais une telle tentative a échoué en raison de la formation de bulles,et il en a résulté une fixation médiocre ne pouvant pas trouver une application industrielle convenable.More recently, an attempt has been made to make such a bonding by impregnating the rod with insulating material with a layer of adhesive, but such an attempt has failed due to the formation of bubbles, and this has resulted in poor fixing. unable to find a suitable industrial application.

Ainsi, le brevet US N° 3.672.712 décrit une structure pour solidariser l'extrémité d'un élément en fibre de verre à une armature. L'extrémité de l'élément en fibre de verre sur laquelle doit être solidarisée l'armature est divisée en quatre tronçons égaux. Selon ce brevet US,une ouverture centrale est prévue pour faciliter l'introduction de résine entre les tronçons.Thus, US Patent No. 3,672,712 describes a structure for securing the end of a fiberglass element to a frame. The end of the fiberglass element on which the reinforcement must be secured is divided into four equal sections. According to this US patent, a central opening is provided to facilitate the introduction of resin between the sections.

Le brevet DE n° 1.074.688 décrit la solidarisation de l'enveloppe en céramique ou analogue d'un isolateur avec un noyau constitué par plusieurs tiges en résine durcie à base de fibres de verre au moyen d'une matière de remplissage (colle).Patent DE n ° 1.074.688 describes the joining of the ceramic or similar envelope of an insulator with a core constituted by several rods of hardened resin based on glass fibers by means of a filling material (glue) .

Le brevet CH N° 571.267 décrit un procédé pour ancrer l'extrémité d'une tige en résine synthétique ren-forcée par des fibres dans une armature,procédé selon lequel on chauffe l'extrémité de la tige jusqu'à obten- - tion d'un affaiblissement de la liaison résine synthétique-fibres de garnissage,on procède à un élargissement dans tous les sens et à l'ancrage en remplissant les fentes avec la résine synthétique qui durcit.Patent CH No. 571,267 describes a method for anchoring the end of a rod of synthetic resin reinforced with fibers in a frame, method according to which the end of the rod is heated until obtaining - '' a weakening of the synthetic resin-lining fibers connection, we proceed to a widening in all directions and to the anchoring by filling the slots with the synthetic resin which hardens.

La demande de certificat d'addition FR n" 76 12 787 publiée sous le n°2.349.934 décrit un mode de liaison entre une ferrure d'ancrage et une tige. Un mode de collage particulier est utilisé avec introduction de la colle dans des ouvertures qui sont ensuite fermées par des bouchons.The application for certificate of addition FR No. 76 12 787 published under No. 2,349,934 describes a method of connection between an anchoring fitting and a rod. A particular method of bonding is used with the introduction of glue into openings which are then closed with plugs.

Le brevet DE n° 1.159.531 décrit un isolateur constitué d'une enveloppe en céramique et d'un noyau (tige) en résine synthétique renforcée par des fibres de verre. L'espace entre le noyau et l'enveloppe est rempli par un milieu liquide ou sous forme de pâte (colle). Un organe de blocage s'applique contre la tige pour l'empêcher de tourner.DE Patent No. 1,159,531 describes an insulator consisting of a ceramic shell and a core (rod) of synthetic resin reinforced with fibers of glass. The space between the core and the envelope is filled with a liquid medium or in the form of a paste (glue). A blocking member is applied against the rod to prevent it from rotating.

La présente invention a pour objet de supprimer les inconvénients précités et elle permet d'assujettir une tige d'isolateur à une ferrure d'accrochage selon une fixation sûre,efficace,très résistante et durable.The object of the present invention is to eliminate the aforementioned drawbacks and it makes it possible to subject an insulator rod to an attachment fitting according to a secure, effective, very resistant and durable fixing.

Lors de la mise en oeuvre de la présente invention, on supprime tous les problèmes inhérents à l'art antérieur,notamment la formation de bulles,grâce à la prévision d'une opération au cours de laquelle on fait le vide à l'intérieur de la pièce destinée à recevoir la tige d'isolateur.During the implementation of the present invention, all the problems inherent in the prior art, in particular the formation of bubbles, are eliminated by providing for an operation during which a vacuum is created inside the part intended to receive the insulator rod.

Le procédé selon la présente invention est d'une réalisation très simple et est très économique.The method according to the present invention is very simple to carry out and is very economical.

Conformément à l'invention,le procédé d'assujettissement de tiges en matériau isolant dans des ferrures d'accrochage est caractérisé en ce qu'il consiste à introduire une tige pourvue d'un trou et d'une fente destinée à réduire l'effort nécessaire sans provoquer: l'écartement de l'extrémité de la tige dans une ferrure également munie d'un trou borgne,à placer une pièce de fixation comprenant un canal dans le trou borgne de la ferrure,à faire pénétrer l'extrémité de ladite pièce de fixation dans le trou de la tige qui,sous la sollicitation du cône d'entrée de cette pièce de fixation,s'écarte et vient se plaquer sur une portion notable de la périphérie de l'alésage conique de la ferrure,à procéder au bourrage,une fois cette mise en place assurée, de l'intérieur de la ferrure par l'intermédiaire du canal de la pièce de fixation,avec une résine de haute résistance mécanique, de retrait nul et de coefficient de dilatation identique à celui du métal constitutif de la ferrure qui,après polymérisation,forme avec la tige un bloc rigide solidaire de la ferrure dont la contre-dépouille s'oppose à l'extraction de la tige même sous de fortes sollicitations,et à arraser à fleur de la ferrure la pièce de fixation après polymérisation de la résine.In accordance with the invention, the method for securing rods of insulating material in attachment fittings is characterized in that it consists in introducing a rod provided with a hole and a slot intended to reduce the force necessary without causing: the spacing of the end of the rod in a fitting also provided with a blind hole, to place a fixing piece comprising a channel in the blind hole of the fitting, to make the end of said fixing part in the hole of the rod which, under the stress of the cone of entry of this fixing part, deviates and comes to be pressed on a notable portion of the periphery of the conical bore of the fitting, to proceed tamping, once this is ensured, from the inside of the fitting through the channel of the fixing piece, with a resin of high mechanical resistance, zero shrinkage and expansion coefficient identical to that of the metal constituting the fitting which, after polymerization, forms with the rod, a rigid block secured to the fitting, the undercut of which opposes the extraction of the rod even under high stresses, and to level the fixing piece flush with the fitting after polymerization of the resin.

Le trou que présente la tige d'isolateur est introduit dans l'axe et le prolongement du trou borgne de la ferrure.The hole in the insulator rod is inserted into the axis and the extension of the blind hole in the fitting.

La pièce de fixation est placée dans le trou borgne de la ferrure par pression continue ou chocs répétés.The fixing piece is placed in the blind hole of the fitting by continuous pressure or repeated shocks.

On procède au bourrage de l'intérieur de la ferrure par aspiration sous vide puis par injection d'une résine,cette résine étant une résine époxy ou toute colle similaire appropriée.The interior of the fitting is stuffed by vacuum suction and then by injection of a resin, this resin being an epoxy resin or any similar suitable adhesive.

Avant de réaliser la solidarisation de la tige en matériau isolant et de la ferrure métallique,ces deux pièces subissent un usinage mécanique.Before securing the rod of insulating material and the metal fitting, these two parts undergo mechanical machining.

La présente invention est également relative à un dispositif d'ancrage de tiges en matériau isolant dans des ferrures d'accrochage permettant la mise en oeuvre du procédé précité,dispositif qui comprend une tige en matériau isolant de résistance élevée à la traction constituée de verre filamentaire/de résine époxy,une ferrure métallique de géométrie intérieure assurant une importante contre-dépouille et une troisième pièce métallique de fixation...The present invention also relates to a device for anchoring rods of insulating material in attachment fittings allowing the implementation of the aforementioned method, device which comprises a rod of insulating material of high tensile strength consisting of filamentary glass / epoxy resin, a metal fitting with internal geometry ensuring a significant undercut and a third metal part of fixation...

Divers avantages et caractéristiques de la présente invention ressortiront d'ailleurs de la description détaillée ci-après.Various advantages and characteristics of the present invention will also emerge from the detailed description below.

L'invention est illustrée, à titre d'exemples non limitatifs,aux dessins annexés sur lesquels:

  • Fig.1 est une vue de dessus d'une tige en matériau isolant,notamment d'une tige d'isolateur,pourvue d'un trou;
  • Fig.2 est une vue éclatée en coupe du dispositif d'ancrage montrant les trois éléments:tige,ferrure et pièce de fixation,avant leur assemblage;
  • Fig.3 est une vue de côté des éléments assemblés après l'application du procédé selon la présente invention.
The invention is illustrated, by way of nonlimiting examples, in the appended drawings in which:
  • Fig.1 is a top view of a rod of insulating material, in particular an insulator rod, provided with a hole;
  • Fig.2 is an exploded sectional view of the anchoring device showing the three elements: rod, fitting and fixing part, before their assembly;
  • Fig.3 is a side view of the elements assembled after the application of the method according to the present invention.

Aux dessins annexés,notamment à la figure l,on a représenté en vue de dessus une tige d'isolateur 1 pourvue d'un trou 2 d'un diamètre de l'ordre de 6mm et d'une fente 3. Cette tige l,en matériau isolant de résistance élevée à la traction, est, à titre d'exemple,en verre filamentaire et résine époxy.In the accompanying drawings, in particular in FIG. 1, there is shown a top view of an insulator rod 1 provided with a hole 2 with a diameter of the order of 6mm and with a slot 3. This rod l, made of insulating material with high tensile strength, is, for example, filamentary glass and epoxy resin.

La figure 2 montre en vue éclatée en coupe les trois éléments constitutifs du dispositif d'ancrage de l'invention pour la mise en oeuvre du procédé. La tige l,pourvue d'un trou 2 et d'une fente,est placée dans l'axe de la ferrure d'accrochage 4. Cette ferrure 4 comporte un trou borgne 5 sur un côté. Il s'agit d'une ferrure métallique de géométrie intérieure assurant une importante contre-dépouille. Le diamètre du trou borgne 5 peut être,par exemple,de 10 mm environ. La partie interne de la ferrure 4 présente une forme tronconique 6.Figure 2 shows an exploded sectional view of the three constituent elements of the anchoring device of the invention for the implementation of the method. The rod l, provided with a hole 2 and a slot, is placed in the axis of the hooking fitting 4. This fitting 4 has a blind hole 5 on one side. It is a metal fitting with internal geometry ensuring a significant undercut. The diameter of the blind hole 5 can be, for example, about 10 mm. The internal part of the fitting 4 has a frustoconical shape 6.

Le troisième élément du dispositif d'ancrage est constitué par une pièce de fixation 7. Cette pièce de fixation 7 est une broche creuse comprenart un canal 8. Sa partie supérieure 9' a un diamètre correspondant à celui du trou borgne 5 de la ferrure 4 tandis que son extrémité 9 est tronconique.The third element of the anchoring device is constituted by a fixing piece 7. This fixing piece 7 is a hollow pin comprising a channel 8. Its upper part 9 ′ has a diameter corresponding to that of the blind hole 5 of the fitting 4 while its end 9 is frustoconical.

Le procédé destiné à assurer l'ancrage de la tige 1 sur la ferrure 4 est réalisé comme indiqué ci-après:

  • on introduit la tige 1 dans la ferrure 4,1e trou 2 de la tige 1 dans l'axe et le prolongement du trou borgne 5 de la ferrure 4. On place ensuite la pièce de fixation 7 dans le trou borgne 5 de la ferrure 4 et,par pression continue ou chocs répétés,on fait pénétrer l'extrémité 9 de forme tronconique de la pièce de fixation 7 dans le trou 2 de la tige 1 qui,sous la sollicitation de l'extrémité 9 tronconique,s'écarte et vient se plaquer sur une portion notable de la périphérie de l'alésage conique 6 de la ferrure 4. Une fois cette mise en place assurée,on procède au bourrage de l'intérieur de la ferrure 4,par aspiration sous Nide puis par injection,par l'intermédiaire du canal 8 de la pièce de fixation 7,avec une résine,par exemple une résine époxy de haute résistance mécanique,de retrait nul et de coefficient de dilatation identique à celui du métal constitutif de la ferrure qui,après polymérisation, formera avec la tige 1 un bloc rigide solidaire de la ferrure 4 dont la contre-dépouille s'oppose à l'extraction de la tige 1 même sous de fortes sollicitations. Après polymérisation de la résine,la pièce de fixation 7 est arrasée à fleur de la ferrure 4.
The process for anchoring the rod 1 to the fitting 4 is carried out as indicated below:
  • the rod 1 is introduced into the fitting 4.1th hole 2 of the rod 1 in the axis and the extension of the blind hole 5 of the fitting 4. The fixing part 7 is then placed in the blind hole 5 of the fitting 4 and, by continuous pressure or repeated shocks, the end 9 of frustoconical shape of the fastener 7 is made to penetrate into the hole 2 of the rod 1 which, under the stress of the frustoconical end 9, moves away and comes to be pressed on a significant portion of the periphery of the conical bore 6 of the fitting 4. Once this establishment ensured, one proceeds to the stuffing of the interior of the fitting 4, by suction under Nide then by injection, by through the channel 8 of the fixing piece 7, with a resin, for example an epoxy resin of high mechanical strength, zero shrinkage and expansion coefficient identical to that of the metal of the fitting which, after polymerization, will form with the rod 1 a rigid block secured to the fitting 4, the undercut of which opposes the extraction of the rod 1 even under high stresses. After polymerization of the resin, the fixing part 7 is leveled flush with the fitting 4.

Au sens de la présente invention,l'expression "bourrage de l'intérieur de la ferrure" signifie que l'on applique tout d'abord un vide relativement poussé à l'aide de tout moyen convenable,non représenté,et bien connu des spécialistes dans ce domaine.Ensuite,après cette application,on injecte à l'intérieur de la ferrure 4 une résine convenable par l'intermédiaire du canal8. Il en résulte qu'il ne se forme pas de bulles nuisibles à l'opération de solidarisation et par conséquent la liaison est très rigide et très fiable.For the purposes of the present invention, the expression "stuffing of the interior of the fitting" means that a relatively high vacuum is first applied using any suitable means, not shown, and well known to specialists in this field. Then, after this application, a suitable resin is injected inside the fitting 4 via the channel 8. As a result, no bubbles are formed which are harmful to the joining operation and consequently the connection is very rigid and very reliable.

La figure 3 montre les éléments assemblés et la liaison obtenue après la mise en oeuvre du procédé selon la présente invention. Cette figure illustre particulièrement bien l'assujettissement de la tige 1 dans la ferrure d'accrochage 4 et l'emplacement de la résine époxy 10.Figure 3 shows the assembled elements and the connection obtained after the implementation of the method according to the present invention. This figure illustrates particularly well the securing of the rod 1 in the attachment fitting 4 and the location of the epoxy resin 10.

On observera que le dispositif pour la réalisation du procédé de l'invention est d'une conception très simple et très économique et que les composants sont simplement une tige 1 en matériau isolant de résistance élevée à la traction comme,par exemple,un matériau en verre filamentaire et résine époxy,une ferrure métallique 4 de géométrie intérieure assurant une importante contre-dépouille,et une pièce de fixation métallique 7. Pour améliorer la liaison,les pièces subissent un usinage mécanique.It will be observed that the device for carrying out the process of the invention is of a very simple and very economical design and that the components are simply a rod 1 made of insulating material of high tensile strength such as, for example, a material made of filamentary glass and epoxy resin, a metal fitting 4 of internal geometry ensuring a significant undercut, and a metal fixing part 7. To improve the connection, the parts undergo mechanical machining.

Le procédé et le dispositif selon la présente invention trouvent une application particulière pour assujettir des tiges d'isolateurs à leurs ferrures d'accrochage;toutefois,il est possible d'envisager d'autres applications.The method and the device according to the present invention find a particular application for securing insulator rods to their attachment fittings; however, it is possible to envisage other applications.

L'invention n'est pas limitée au mode de réalisation représenté et décrit en détail,car diverses modifications peuvent y être apportées sans sortir de son cadre.The invention is not limited to the embodiment shown and described in detail, since various modifications can be made without departing from its scope.

Claims (9)

1.Procédé d'assujettissement de tiges en matériau isolant dans des ferrures d'accrochage,caractérisé en ce qu'il consiste à introduire une tige (1) pourvue d'un trou (2) dans une ferrure (4) également munie d'un trou borgne (5),à placer une pièce de fixation (7) comprenant un canal (8) dans le trou borgne (5) de la ferrure (4), à faire pénétrer l'extrémité (9) de ladite pièce de fixation (7) dans le trou (2) de la tige (1) qui,sous la sollicitation du cône d'entrée de cette pièce de fixation (7) ,s'écarte et vient se plaquer sur une portion notable de la périphérie de l'alésage conique de la ferrure (4),à procéder au bourrage,une fois cette mise en place assurée,de l'intérieur de la ferrure (4) par l'intermédiaire du canal (8) de la pièce de fixation (7),avec une résine de haute résistance mécanique et de retrait nul qui,après polymérisation,forme avec la tige (1) un bloc rigide solidaire de la ferrure (4) dont la contre-dé- puille s'oppose à l'extraction de la tige (1) même sous de fortes sollicitations,et à arraser à fleur de la ferrure (4) la pièce de fixation (7)après polymérisation de la résine.1. Method for securing rods made of insulating material in attachment fittings, characterized in that it consists in introducing a rod (1) provided with a hole (2) in a fitting (4) also provided with a blind hole (5), to place a fixing piece (7) comprising a channel (8) in the blind hole (5) of the fitting (4), to make the end (9) of said fixing piece penetrate (7) in the hole (2) of the rod (1) which, under the bias of the inlet cone of this fixing piece (7), deviates and comes to rest on a significant portion of the periphery of the tapered bore of the fitting (4), to stuff, once this is ensured, inside the fitting (4) via the channel (8) of the fixing piece (7) , with a resin of high mechanical resistance and zero shrinkage which, after polymerization, forms with the rod (1) a rigid block integral with the fitting (4) whose counter-deflector opposes the extraction of the rod (1) even under fo all requests, and to flush flush with the fitting (4) the fixing piece (7) after polymerization of the resin. 2. Procédé selon la revendication l,caractérisé en ce qu'on introduit le trou (2) de la tige (1) dans l'axe et le prolongement du trou brogne (5) de la ferrure (4).2. Method according to claim l, characterized in that one introduces the hole (2) of the rod (1) in the axis and the extension of the pin hole (5) of the fitting (4). 3. Procédé selon l'une des revendications 1 ou 2, caractérisé en ce qu'on place la pièce de fixation (7) dans le trou (5) de la ferrure (4) par pression continue ou chocs répétés.3. Method according to one of claims 1 or 2, characterized in that the fixing part (7) is placed in the hole (5) of the fitting (4) by continuous pressure or repeated shocks. 4. Procédé selon l'une quelconque des revendications 1 à 3,caractérisé en ce qu'on procède au bourrage de l'intérieur de la ferrure (4) par aspiration sous vide et par injection avec une résine.4. Method according to any one of claims 1 to 3, characterized in that one proceeds to the stuffing of the interior of the fitting (4) by vacuum suction and by injection with a resin. 5. Procédé selon l'une quelconque des revendications 1 à 4,caractérisé en ce que la résine est une résine époxy ou toute colle similaire convenable.5. Method according to any one of claims 1 to 4, characterized in that the resin is an epoxy resin or any suitable similar glue. 6. Procédé selon l'une quelconque des revendications 1 à 5,caractérisé en ce que la tige (1) en matériau isolant et la ferrure métallique (4) subissent, avant leur mise en place,un usinage mécanique.6. Method according to any one of claims 1 to 5, characterized in that the rod (1) of insulating material and the metal fitting (4) undergo, before their establishment, mechanical machining. 7. Dispositif d'ancrage de tiges en matériau isolant dans des ferrures d'accrochage pour la mise en oeuvre du procédé selon l'une quelconque des revendications 1 à 6,caractérisé en ce qu'il comprend une tige (1) en matériau isolant de résistance élevée à la traction,une ferrure métallique (4) de géométrie intérieure assurant une importante contre-dépouille,et une troisième pièce métallique de fixation (7).7. Device for anchoring rods made of insulating material in attachment fittings for implementing the method according to any one of claims 1 to 6, characterized in that it comprises a rod (1) made of insulating material high tensile strength, a metal fitting (4) of internal geometry ensuring a significant undercut, and a third metal fixing piece (7). 8. Dispositif selon la revendication 7,caractérisé en ce que la tige (1) en matériau isolant de résistance élevée à la traction est en verre filamentaire et en résine époxy8. Device according to claim 7, characterized in that the rod (1) of insulating material of high tensile strength is made of filament glass and of epoxy resin 9. Application du procédé et du dispositif selon l'une quelconque des revendications 1 à 8 aux tiges d'isolateurs et à leurs ferrures d'accrochage.9. Application of the method and the device according to any one of claims 1 to 8 to the insulator rods and to their attachment fittings.
EP80400780A 1979-06-15 1980-06-02 Process for securing insulating rods in attachment fittings and apparatus for the realization thereof Ceased EP0021902A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7915432 1979-06-15
FR7915432A FR2459398A1 (en) 1979-06-15 1979-06-15 METHOD FOR LOADING RODS IN INSULATING MATERIALS IN CONNECTING FIXTURES AND DEVICE FOR CARRYING OUT SAME

Publications (1)

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EP0021902A1 true EP0021902A1 (en) 1981-01-07

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EP80400780A Ceased EP0021902A1 (en) 1979-06-15 1980-06-02 Process for securing insulating rods in attachment fittings and apparatus for the realization thereof

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US (1) US4281943A (en)
EP (1) EP0021902A1 (en)
JP (1) JPS563311A (en)
CA (1) CA1133999A (en)
ES (1) ES492392A0 (en)
FR (1) FR2459398A1 (en)

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KR101117513B1 (en) * 2003-12-05 2012-03-15 아지노모토 가부시키가이샤 L-Threonine producing bacterium belonging to the genus Escherichia and method for producing L-threonine

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KR101117513B1 (en) * 2003-12-05 2012-03-15 아지노모토 가부시키가이샤 L-Threonine producing bacterium belonging to the genus Escherichia and method for producing L-threonine

Also Published As

Publication number Publication date
FR2459398A1 (en) 1981-01-09
FR2459398B1 (en) 1983-11-10
ES8201276A1 (en) 1981-11-01
ES492392A0 (en) 1981-11-01
JPS563311A (en) 1981-01-14
CA1133999A (en) 1982-10-19
US4281943A (en) 1981-08-04

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