EP2677084B1 - Anchor member and corresponding anchoring device - Google Patents

Anchor member and corresponding anchoring device Download PDF

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Publication number
EP2677084B1
EP2677084B1 EP13169343.4A EP13169343A EP2677084B1 EP 2677084 B1 EP2677084 B1 EP 2677084B1 EP 13169343 A EP13169343 A EP 13169343A EP 2677084 B1 EP2677084 B1 EP 2677084B1
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EP
European Patent Office
Prior art keywords
anchoring
anchoring member
rod
leading edge
substantially elliptical
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EP13169343.4A
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German (de)
French (fr)
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EP2677084A2 (en
EP2677084A3 (en
Inventor
Jean-Edouard Gissinger
Charles Gissinger
Patrick Thevenin
Stéphane Thevenin
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Individual
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Publication of EP2677084A3 publication Critical patent/EP2677084A3/en
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74—Means for anchoring structural elements or bulkheads
    • E02D5/80—Ground anchors
    • E02D5/801—Ground anchors driven by screwing

Definitions

  • the invention relates to an anchoring member ensuring the penetration into the ground of an anchoring device used for fixing structures in the ground.
  • the invention also relates to an anchoring device consisting of at least one anchoring member according to the invention.
  • the invention is particularly useful for fixing trellises of vineyards, guying masts or trees, poles, antennas or other similar works extending in height.
  • the document EP 2 261 423 A1 describes a disk anchoring device of the type comprising a rod having an end intended to protrude from the anchoring medium and a helical anchoring disk in said medium.
  • the shaft and the helical disk are provided with cooperating screwing conformations of mechanical jamming by elastoplastic deformation.
  • these helical disks can be press-made automatically using specific "tools to follow" for each disk size.
  • the helical shape does not make it possible to use a known type of feed machine, but imposes a costly technique for feeding a specific vibratory bowl, or a feeding technique using a robot associated with a machine. vision camera for sorting the disks according to their gripping position.
  • the vibratory bowl feed corresponds to only one disc size at a time, which necessitates multiplying the vibratory bowl systems according to the number of disc sizes to be fed.
  • the manufacturing tolerances of the helical disks must be accurate to allow a good supply, which increases the cost of manufacture of the helical disks.
  • a first object of the invention is to provide a new manufacturing anchor cheaper than the manufacture of helical disks, and conformation adapted to a simple power system compatible with several sizes of anchors.
  • the invention relates to an anchoring member consisting essentially of substantially flat plate and having a leading edge and a curved contour surrounding a passage having a conformation at least partially substantially elliptical.
  • the anchoring members according to the invention have the advantage of reducing the tooling costs, by allowing the realization by simple cutting from metal strip on press tools of simple design.
  • the tools to follow anchors according to the invention are of reduced size and simple design.
  • the energy used for the manufacture of the anchoring members according to the invention is reduced by the use of smaller presses.
  • the anchoring members according to the invention can be made on punching machines or laser cutting machines, without the need for additional bending. This method of manufacture also makes it possible to produce prototypes to perform desired tests by customers wishing to try specific anchors.
  • the anchoring members according to the invention can be powered by vibratory bowl feed systems of simple manufacture and compatible with several sizes of anchoring members, for their assembly with a rod, or for the purpose of their assembly with threaded or threaded sleeves, like the sleeves described in the document EP 2 261 423 A1 .
  • the invention also relates to an anchoring device comprising a rod having an end intended to protrude from an anchoring medium and comprising at least one anchoring member constituted essentially in the form of a substantially flat plate having an edge of attack and a curved contour surrounding a central passage having a conformation at least partially substantially elliptical for the passage and fixation of the rod.
  • a first anchoring member according to the invention is constituted by a flat plate (1) having a substantially elliptical hole (2).
  • the plate (1) is bounded by a right segment leading edge (3) and a curved contour (4) surrounding the substantially elliptical hole (2).
  • the major axis of the ellipse (2) forms with the leading edge (3) an angle (5) advantageously between 40 and 45 degrees of angle.
  • a second anchoring member according to the invention is constituted by a flat plate (1) stiffened by a rib (1 a) surrounding a substantially elliptical hole (2).
  • the plate (1) is bounded by a right segment leading edge (3) and a curved contour (4) surrounding the substantially elliptical hole (2).
  • the major axis of the ellipse (2) forms with the leading edge (3) an angle (5) advantageously between 40 and 45 degrees of angle.
  • a third anchoring member according to the invention is constituted by a flat plate (1) having a notch with a substantially elliptical portion (2).
  • the plate (1) is bounded by a straight segment leading edge (3) and a curved contour (4) surrounding the substantially elliptical portion (2) of the notch.
  • the major axis of the ellipse (2) forms with the leading edge (3) an angle (5) advantageously between 40 and 45 degrees of angle.
  • a fourth anchoring member according to the invention is constituted by a flat plate (1) provided with a substantially elliptical hole (2), a leading edge with two sectors (3a, 3b) and a curved contour (4) surrounding the substantially elliptical hole (2).
  • the tangent to the leading edge forms an angle (5) with the major axis of the ellipse (2).
  • the angle (5) is advantageously between 40 and 45 degrees of angle.
  • a fifth anchoring member according to the invention is constituted by a flat plate (1) provided with a substantially elliptical hole (2), a two-sector leading edge (3a, 3b) and a curved contour (4) surrounding the substantially elliptical hole (2).
  • the two-sector leading edge (3a, 3b) and the curved contour (4) are provided with peripheral teeth to facilitate penetration and advancement in the anchoring medium.
  • the tangent to the leading edge forms an angle (5) with the major axis of the ellipse (2).
  • the angle (5) is advantageously between 40 and 45 degrees of angle.
  • a first embodiment of the anchoring device according to the invention comprises a rod (6) provided with a hook (6a) in the upper part.
  • the rod (6) is threaded into the substantially elliptical hole (2) of the anchoring member of the figure 1 , and attached to this substantially elliptical hole (2) by welding.
  • the plate (1) is inclined downward, so that the leading edge (3b) sinks into the ground when a rotating action is exerted via the hook (6a).
  • a second embodiment of anchoring device according to the invention also comprises a rod (6) provided with a hook (6a).
  • the rod (6) is pressed into the substantially elliptical hole (2) of the plate (1) and fixed to this substantially elliptical hole (2) by welding.
  • the rib (1a) prevents deformation of the flat plate (1) during penetration into the ground or during pulling or pulling force exerted at the end of the hook (6a), so to avoid an "umbrella deformity".
  • the generic profile view of the anchoring device corresponds to the two embodiments of the Figures 3 and 4 .
  • the anchoring device Figures 3 to 5 comprises a rod (6) provided at its upper end shaped loops of the hook (6a) for both rotating drive and attachment means for a tensioner or a wire.
  • the rod (6) is adapted at its lower end to assemble and fix a plate (1) substantially flat.
  • the plate (1) fixed for example by welding to the rod (6) comprising the hook (6a) is inclined relative to a plane perpendicular to the rod (6) at an angle (A).
  • This angle (A) is preferably between 25 and 40 degrees of angle, for example close to 35 degrees of angle.
  • the lower end (6b) of the rod (6) opposite the hook (6a) is preferably protruding by a distance (d) between 0 and 100 mm from the plane perpendicular to the rod (6) and tangent at the bottom of the plate (1).
  • the end (6b) of the rod 6 allows guidance in the ground to ensure good rotation of the anchoring device, especially at the beginning of the penetration of the anchor member into the ground by action of the leading edge (3).
  • the outline of the anchoring members according to the invention is a substantially concave contour, with the exception of the leading edge (3).
  • the outline of an anchoring member according to the invention may vary, the essential fact being that the anchoring member has a substantially flat conformation, a sharp leading edge (3) and a curved contour (4) surrounding the substantially elliptical hole and the rod (6) of the anchoring device.
  • the size of the anchoring members depends on the desired pull-out resistance, it being specified that the various anchoring members have a substantially homothetic size with respect to the center of the ellipse (2) and chosen as a function of the desired mechanical characteristics. .
  • the anchoring member is preferably made by cutting a metal strip on a press.
  • the anchoring member may be made by laser cutting or by a punching machine.
  • the rod (6) is intended to be assembled to at least one threaded sleeve (7) welded to a substantially elliptical hole (2) of a plate (1) constituting an anchoring member.
  • the rod (6) has a conical thread (8) which gets stuck in the thread of the threaded sleeve (7) during screwing.
  • the wedging between the thread of the threaded sleeve (7) and the conical thread (8) is elastoplastic.
  • the invention covers all variants of cooperating screwing formations to obtain a mechanical jamming, by screwing resulting in elastoplastic deformation.
  • the invention covers in particular a conical thread and a tapered tapping of the same conicities or different conicities, the essential being to obtain a mechanical jamming, during the continuation of the rotational movement to screw the device in the ground, in the direction screwing the rod corresponding to the depression in the ground.
  • the resistance force to the screwing of an anchoring member in the ground contributes to further increase the mechanical jamming of the rod and the anchoring member.
  • the rotational force of the rod is therefore integrally transmitted to the anchor member during its insertion into the ground.
  • the mechanical jamming leads, during the driving of the helical disk in the screw anchoring medium, to an elastoplastic deformation that permanently secures the pin and the helical disk by wedging. This fastening makes it possible in particular to remove by unscrewing the entire secured anchoring device, in the case where the user tries to retrieve the device, or in the case where the user has made a mistake in locating the device. .
  • the rod (6) has an end (6b) protruding over a distance "d" of between 0 and 100 mm from the plane perpendicular to the rod (6) and tangent to the bottom of the plate (1).
  • This protruding end (6b) ensures the guidance in the ground and the correct rotation of the anchoring device during the penetration into the ground.
  • multi-part anchoring devices comprising sections of rods and anchoring members provided with threaded or threaded sleeves makes it possible to reduce the size of the devices during transportation before assembly.
  • a plate (1) provided with a threaded sleeve (7) and constituting an anchoring member has an angle of inclination (A) with respect to a plane perpendicular to the axis of the threaded sleeve (7).
  • This angle (A) is preferably between 25 and 40 degrees of angle, for example close to 35 degrees of angle
  • the axis of the threaded sleeve (7) projects perpendicularly in the direction of the major axis of the ellipse (2).
  • the leading edge (3) of the plate (1) provided with a threaded sleeve (7) and forming an anchoring member forms with the direction of the major axis of the ellipse (2) an angle (5) advantageously between 40 and 45 degrees of angle.
  • the tangent to the two leading sectors (3a) and (3b) forms with the direction of the major axis of the ellipse (2) an angle (5) advantageously between 40 and 45 degrees of angle.
  • the plate (1) can be reinforced with a rib (1 a), to avoid unwanted "umbrella-shaped” deformations when pulling or tearing the anchor.
  • One or more ribs (1 a) may be formed during cutting of the workpiece. These ribs (1 a) may advantageously have a curved shape.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Piles And Underground Anchors (AREA)

Description

L'invention est relative à un organe d'ancrage assurant la pénétration dans le sol d'un dispositif d'ancrage utilisé pour la fixation d'ouvrages dans le sol.The invention relates to an anchoring member ensuring the penetration into the ground of an anchoring device used for fixing structures in the ground.

L'invention est également relative à un dispositif d'ancrage constitué à partir d'au moins un organe d'ancrage selon l'invention.The invention also relates to an anchoring device consisting of at least one anchoring member according to the invention.

L'invention est particulièrement utile pour la fixation de palissages de vignobles, de haubanages de mâts ou d'arbres, de poteaux, d'antennes ou d'autres ouvrages analogues s'étendant en hauteur.The invention is particularly useful for fixing trellises of vineyards, guying masts or trees, poles, antennas or other similar works extending in height.

Le document EP 2 261 423 A1 décrit un dispositif d'ancrage à disque du type comportant une tige présentant une extrémité destinée à dépasser du milieu d'ancrage et un disque hélicoïdal d'ancrage dans ledit milieu. La tige et le disque hélicoïdal sont munis de conformations de vissage coopérantes de coincement mécanique par déformation élastoplastique.The document EP 2 261 423 A1 describes a disk anchoring device of the type comprising a rod having an end intended to protrude from the anchoring medium and a helical anchoring disk in said medium. The shaft and the helical disk are provided with cooperating screwing conformations of mechanical jamming by elastoplastic deformation.

Les dispositifs d'ancrage du document EP 2 261 423 A1 donnent généralement satisfaction, mais leurs organes d'ancrage constitués sous forme de disques à forme hélicoïdale présentent des inconvénients de coût, en ce qui concerne leur fabrication, l'alimentation sur la chaîne d'assemblage et l'importance des stockages nécessaires.Document anchoring devices EP 2 261 423 A1 are generally satisfactory, but their anchors formed as helical discs have disadvantages of cost, in terms of their manufacture, supply on the assembly line and the importance of necessary storage.

Généralement, ces disques hélicoïdaux peuvent être fabriqués sur presse automatiquement en utilisant des « outils à suivre » spécifiques pour chaque taille de disque.Generally, these helical disks can be press-made automatically using specific "tools to follow" for each disk size.

La multiplication des diverses tailles de disques hélicoïdaux adaptées aux performances des ancrages à réaliser nécessite une multiplication correspondante des outils à suivre de fabrication.The multiplication of the various sizes of helical disks adapted to the performance of the anchors to be produced requires a corresponding multiplication of the manufacturing tools to be followed.

Pour réaliser l'assemblage de disques hélicoïdaux avec des tiges centrales, il est souhaitable d'alimenter automatiquement les disques hélicoïdaux au poste de travail.To assemble helical disks with central rods, it is desirable to automatically feed the helical disks to the workstation.

Cependant, la forme hélicoïdale ne permet pas d'utiliser une machine d'alimentation de type connu, mais impose une technique coûteuse d'alimentation par bol vibrant spécifique, ou une technique d'alimentation à l'aide d'un robot associé à une caméra de vision permettant de trier les disques selon leur position de préhension.However, the helical shape does not make it possible to use a known type of feed machine, but imposes a costly technique for feeding a specific vibratory bowl, or a feeding technique using a robot associated with a machine. vision camera for sorting the disks according to their gripping position.

L'alimentation par bol vibrant ne correspond qu'à une seule taille de disque à la fois, ce qui nécessite de multiplier les systèmes de bol vibrant en fonction du nombre de tailles de disques à alimenter. En outre, dans un système de bol vibrant, les tolérances de fabrication des disques hélicoïdaux doivent être précises pour permettre une bonne alimentation, ce qui renchérit le coût de fabrication des disques hélicoïdaux.The vibratory bowl feed corresponds to only one disc size at a time, which necessitates multiplying the vibratory bowl systems according to the number of disc sizes to be fed. In addition, in a vibrating bowl system, the manufacturing tolerances of the helical disks must be accurate to allow a good supply, which increases the cost of manufacture of the helical disks.

Un premier but de l'invention est de proposer un nouvel organe d'ancrage de fabrication plus économique que la fabrication des disques hélicoïdaux, et de conformation adaptée à un système d'alimentation simple compatible avec plusieurs tailles d'organes d'ancrage.A first object of the invention is to provide a new manufacturing anchor cheaper than the manufacture of helical disks, and conformation adapted to a simple power system compatible with several sizes of anchors.

L'invention a pour objet un organe d'ancrage constitué essentiellement en plaque sensiblement plane et présentant un bord d'attaque et un contour courbe entourant un passage présentant une conformation au moins partiellement sensiblement elliptique.The invention relates to an anchoring member consisting essentially of substantially flat plate and having a leading edge and a curved contour surrounding a passage having a conformation at least partially substantially elliptical.

Les organes d'ancrage selon l'invention présentent l'avantage de réduire les coûts d'outillage, en permettant la réalisation par simple découpe à partir de feuillard métallique sur des outils de presse de conception simple. Les outillages à suivre des organes d'ancrage selon l'invention sont de dimension réduite et de conception simple. L'énergie utilisée pour la fabrication des organes d'ancrage selon l'invention est diminuée grâce à l'utilisation de presses plus petites.The anchoring members according to the invention have the advantage of reducing the tooling costs, by allowing the realization by simple cutting from metal strip on press tools of simple design. The tools to follow anchors according to the invention are of reduced size and simple design. The energy used for the manufacture of the anchoring members according to the invention is reduced by the use of smaller presses.

Dans le cas de petites séries, les organes d'ancrage selon l'invention peuvent être réalisés sur des poinçonneuses ou des machines de découpe par laser, sans nécessiter de cintrage additionnel. Ce mode de fabrication permet également de réaliser des prototypes pour effectuer des essais souhaités par des clients souhaitant essayer des organes d'ancrage spécifiques.In the case of small series, the anchoring members according to the invention can be made on punching machines or laser cutting machines, without the need for additional bending. This method of manufacture also makes it possible to produce prototypes to perform desired tests by customers wishing to try specific anchors.

Les organes d'ancrage selon l'invention peuvent être alimentés par des systèmes d'alimentation à bol vibrant de fabrication simple et compatible avec plusieurs tailles d'organes d'ancrage, en vue de leur assemblage avec une tige, ou encore en vue de leur assemblage avec des manchons taraudés ou filetés, du genre des manchons décrits dans le document EP 2 261 423 A1 .The anchoring members according to the invention can be powered by vibratory bowl feed systems of simple manufacture and compatible with several sizes of anchoring members, for their assembly with a rod, or for the purpose of their assembly with threaded or threaded sleeves, like the sleeves described in the document EP 2 261 423 A1 .

Selon d'autres caractéristiques alternatives de l'invention :

  • Le bord d'attaque d'un organe d'ancrage peut comporter un bord tranchant courbe.
  • Le bord d'attaque d'un organe d'ancrage peut comporter un bord tranchant droit.
  • La plaque d'un organe d'ancrage peut avantageusement présenter une nervure de renfort.
  • La nervure de renfort d'un organe d'ancrage est de préférence une nervure courbe s'étendant sensiblement parallèlement au contour courbe de l'organe d'ancrage, de manière à entourer le passage central présentant une conformation au moins partiellement sensiblement elliptique de l'organe d'ancrage.
According to other alternative features of the invention:
  • The leading edge of an anchoring member may comprise a curved cutting edge.
  • The leading edge of an anchoring member may comprise a straight cutting edge.
  • The plate of an anchoring member may advantageously have a reinforcing rib.
  • The reinforcing rib of an anchoring member is preferably a curved rib extending substantially parallel to the curved contour of the anchoring member, so as to surround the central passage having a at least partially substantially elliptical conformation of the anchoring member.

L'invention a également pour objet un dispositif d'ancrage comportant une tige présentant une extrémité destinée à dépasser d'un milieu d'ancrage et comportant au moins un organe d'ancrage constitué essentiellement sous forme de plaque sensiblement plane présentant un bord d'attaque et un contour courbe entourant un passage central présentant une conformation au moins partiellement sensiblement elliptique pour le passage et la fixation de la tige.The invention also relates to an anchoring device comprising a rod having an end intended to protrude from an anchoring medium and comprising at least one anchoring member constituted essentially in the form of a substantially flat plate having an edge of attack and a curved contour surrounding a central passage having a conformation at least partially substantially elliptical for the passage and fixation of the rod.

Selon d'autres caractéristiques alternatives de l'invention :

  • Le passage central présentant une conformation au moins partiellement sensiblement elliptique peut être assemblé par soudure à la tige du dispositif d'ancrage.
  • Le passage central présentant une conformation au moins partiellement sensiblement elliptique peut être assemblé à un manchon par soudage ou par sertissage, et ce manchon est conformé pour coopérer avec une tige et assurer un coincement mécanique par déformation élastoplastique.
  • L'organe d'ancrage est assemblé à la tige d'ancrage selon une inclinaison comprise entre 25 et 40 degrés d'angle.
  • Le bord d'attaque de l'organe d'ancrage est disposé selon un angle par rapport à la projection perpendiculaire de l'axe de la tige sur le plan de la plaque de l'organe d'ancrage.
According to other alternative features of the invention:
  • The central passage having a conformation at least partially substantially elliptical can be assembled by welding to the rod of the anchoring device.
  • The central passage having a conformation at least partially substantially elliptical may be assembled to a sleeve by welding or crimping, and this sleeve is shaped to cooperate with a rod and ensure mechanical entrapment by elastoplastic deformation.
  • The anchoring member is assembled to the anchor rod at an inclination of between 25 and 40 degrees of angle.
  • The leading edge of the anchoring member is disposed at an angle relative to the perpendicular projection of the axis of the rod on the plane of the plate of the anchoring member.

L'invention sera mieux comprise grâce à la description qui va suivre donnée à titre d'exemple non limitatif en référence aux dessins annexés dans lesquels :

  • La figure 1 représente schématiquement une vue de dessus d'un premier mode de réalisation d'organe d'ancrage selon l'invention.
  • Les figures 2A à 2D représentent schématiquement des vues de dessus d'autres modes de réalisation d'organes d'ancrage selon l'invention.
  • La figure 3 représente schématiquement un premier mode de réalisation de dispositif d'ancrage selon l'invention selon le sens de la flèche III de la figure 5.
  • La figure 4 représente schématiquement un deuxième mode de réalisation de dispositif d'ancrage selon l'invention selon le sens de la flèche IV de la figure 5.
  • La figure 5 représente schématiquement une vue de profil d'un organe d'ancrage selon l'invention dans le sens de la flèche V de la figure 3 ou de la figure 4.
  • La figure 6 représente schématiquement un troisième mode de réalisation de dispositif d'ancrage selon l'invention.
The invention will be better understood from the following description given by way of nonlimiting example with reference to the accompanying drawings in which:
  • The figure 1 schematically represents a view from above of a first embodiment of anchoring member according to the invention.
  • The Figures 2A to 2D schematically represent top views of other embodiments of anchors according to the invention.
  • The figure 3 schematically represents a first embodiment of the anchoring device according to the invention according to the direction of the arrow III of the figure 5 .
  • The figure 4 schematically represents a second embodiment of anchoring device according to the invention in the direction of the arrow IV of the figure 5 .
  • The figure 5 schematically represents a profile view of an anchoring member according to the invention in the direction of the arrow V of the figure 3 or from figure 4 .
  • The figure 6 schematically represents a third embodiment of anchoring device according to the invention.

En référence aux figures 1 à 6, les éléments identiques ou fonctionnellement équivalents sont repérés par des chiffres de référence identiques.With reference to Figures 1 to 6 identical or functionally equivalent elements are identified by identical reference numerals.

Sur la figure 1, un premier organe d'ancrage selon l'invention est constitué par une plaque plane (1) comportant un trou sensiblement elliptique (2).On the figure 1 , a first anchoring member according to the invention is constituted by a flat plate (1) having a substantially elliptical hole (2).

La plaque (1) est limitée par un bord d'attaque (3) en segment de droite et un contour courbe (4) entourant le trou sensiblement elliptique (2).The plate (1) is bounded by a right segment leading edge (3) and a curved contour (4) surrounding the substantially elliptical hole (2).

Le grand axe de l'ellipse (2) forme avec le bord d'attaque (3) un angle (5) avantageusement compris entre 40 et 45 degrés d'angle.The major axis of the ellipse (2) forms with the leading edge (3) an angle (5) advantageously between 40 and 45 degrees of angle.

Sur la figure 2A, un deuxième organe d'ancrage selon l'invention est constitué par une plaque plane (1) rigidifiée par une nervure (1 a) entourant un trou sensiblement elliptique (2).On the Figure 2A a second anchoring member according to the invention is constituted by a flat plate (1) stiffened by a rib (1 a) surrounding a substantially elliptical hole (2).

La plaque (1) est limitée par un bord d'attaque (3) en segment de droite et un contour courbe (4) entourant le trou sensiblement elliptique (2).The plate (1) is bounded by a right segment leading edge (3) and a curved contour (4) surrounding the substantially elliptical hole (2).

Le grand axe de l'ellipse (2) forme avec le bord d'attaque (3) un angle (5) avantageusement compris entre 40 et 45 degrés d'angle.The major axis of the ellipse (2) forms with the leading edge (3) an angle (5) advantageously between 40 and 45 degrees of angle.

Sur la figure 2B, un troisième organe d'ancrage selon l'invention est constitué par une plaque plane (1) présentant une encoche avec une partie sensiblement elliptique (2).On the Figure 2B , a third anchoring member according to the invention is constituted by a flat plate (1) having a notch with a substantially elliptical portion (2).

La plaque (1) est limitée par un bord d'attaque (3) en segment de droite et un contour courbe (4) entourant la partie sensiblement elliptique (2) de l'encoche.The plate (1) is bounded by a straight segment leading edge (3) and a curved contour (4) surrounding the substantially elliptical portion (2) of the notch.

Le grand axe de l'ellipse (2) forme avec le bord d'attaque (3) un angle (5) avantageusement compris entre 40 et 45 degrés d'angle.The major axis of the ellipse (2) forms with the leading edge (3) an angle (5) advantageously between 40 and 45 degrees of angle.

Sur la figure 2C, un quatrième organe d'ancrage selon l'invention est constitué par une plaque plane (1) pourvue d'un trou sensiblement elliptique (2), d'un bord d'attaque à deux secteurs (3a, 3b) et d'un contour courbe (4) entourant le trou sensiblement elliptique (2).On the Figure 2C a fourth anchoring member according to the invention is constituted by a flat plate (1) provided with a substantially elliptical hole (2), a leading edge with two sectors (3a, 3b) and a curved contour (4) surrounding the substantially elliptical hole (2).

La tangente au bord d'attaque forme un angle (5) avec le grand axe de l'ellipse (2). L'angle (5) est avantageusement compris entre 40 et 45 degrés d'angle.The tangent to the leading edge forms an angle (5) with the major axis of the ellipse (2). The angle (5) is advantageously between 40 and 45 degrees of angle.

Sur la figure 2D, un cinquième organe d'ancrage selon l'invention est constitué par une plaque plane (1) pourvue d'un trou sensiblement elliptique (2), d'un bord d'attaque à deux secteurs (3a, 3b) et d'un contour courbe (4) entourant le trou sensiblement elliptique (2).On the 2D figure a fifth anchoring member according to the invention is constituted by a flat plate (1) provided with a substantially elliptical hole (2), a two-sector leading edge (3a, 3b) and a curved contour (4) surrounding the substantially elliptical hole (2).

Dans cet exemple, le bord d'attaque à deux secteurs (3a, 3b) et le contour courbe (4) sont pourvus de dents périphériques pour faciliter la pénétration et l'avancement dans le milieu d'ancrage.In this example, the two-sector leading edge (3a, 3b) and the curved contour (4) are provided with peripheral teeth to facilitate penetration and advancement in the anchoring medium.

La tangente au bord d'attaque forme un angle (5) avec le grand axe de l'ellipse (2). L'angle (5) est avantageusement compris entre 40 et 45 degrés d'angle.The tangent to the leading edge forms an angle (5) with the major axis of the ellipse (2). The angle (5) is advantageously between 40 and 45 degrees of angle.

Sur la figure 3, un premier mode de réalisation de dispositif d'ancrage selon l'invention comporte une tige (6) munie d'un crochet (6a) en partie supérieure.On the figure 3 , a first embodiment of the anchoring device according to the invention comprises a rod (6) provided with a hook (6a) in the upper part.

La tige (6) est enfilée dans le trou sensiblement elliptique (2) de l'organe d'ancrage de la figure 1, et fixée à ce trou sensiblement elliptique (2) par soudure.The rod (6) is threaded into the substantially elliptical hole (2) of the anchoring member of the figure 1 , and attached to this substantially elliptical hole (2) by welding.

La plaque (1) est inclinée vers le bas, de manière que le bord d'attaque (3b) s'enfonce dans le sol lorsqu'une action de rotation est exercée par l'intermédiaire du crochet (6a).The plate (1) is inclined downward, so that the leading edge (3b) sinks into the ground when a rotating action is exerted via the hook (6a).

Sur la figure 4, un deuxième mode de réalisation de dispositif d'ancrage selon l'invention comporte également une tige (6) munie d'un crochet (6a).On the figure 4 a second embodiment of anchoring device according to the invention also comprises a rod (6) provided with a hook (6a).

La tige (6) est enfoncée dans le trou sensiblement elliptique (2) de la plaque (1) et fixée à ce trou sensiblement elliptique (2) par soudure.The rod (6) is pressed into the substantially elliptical hole (2) of the plate (1) and fixed to this substantially elliptical hole (2) by welding.

La nervure (1 a) empêche la déformation de la plaque plane (1) lors de la pénétration dans le sol ou lors d'une traction ou d'un effort d'arrachement exercé à l'extrémité du crochet (6a), de manière à éviter une « déformation en parapluie ».The rib (1a) prevents deformation of the flat plate (1) during penetration into the ground or during pulling or pulling force exerted at the end of the hook (6a), so to avoid an "umbrella deformity".

Sur la figure 5, la vue de profil générique du dispositif d'ancrage correspond aux deux modes de réalisation des figures 3 et 4.On the figure 5 , the generic profile view of the anchoring device corresponds to the two embodiments of the Figures 3 and 4 .

Le dispositif d'ancrage des figures 3 à 5 comporte une la tige (6) munie à son extrémité supérieure conformée en boucle du crochet (6a) servant à la fois d'entraînement en rotation et de moyen d'accrochage pour un tendeur ou un fil de fer.The anchoring device Figures 3 to 5 comprises a rod (6) provided at its upper end shaped loops of the hook (6a) for both rotating drive and attachment means for a tensioner or a wire.

La tige (6) est adaptée en son extrémité inférieure pour assembler et fixer une plaque (1) sensiblement plate.The rod (6) is adapted at its lower end to assemble and fix a plate (1) substantially flat.

La plaque (1) fixée par exemple par soudure à la tige (6) comportant le crochet (6a) est inclinée par rapport à un plan perpendiculaire à la tige (6) selon un angle (A).The plate (1) fixed for example by welding to the rod (6) comprising the hook (6a) is inclined relative to a plane perpendicular to the rod (6) at an angle (A).

Cet angle (A) est de préférence compris entre 25 et 40 degrés d'angle, par exemple voisin de 35 degrés d'angle.This angle (A) is preferably between 25 and 40 degrees of angle, for example close to 35 degrees of angle.

L'extrémité (6b) inférieure de la tige (6) opposée au crochet (6a), est de préférence dépassante d'une distance (d) comprise entre 0 et 100 mm par rapport au plan perpendiculaire à la tige (6) et tangent au bas de la plaque (1).The lower end (6b) of the rod (6) opposite the hook (6a) is preferably protruding by a distance (d) between 0 and 100 mm from the plane perpendicular to the rod (6) and tangent at the bottom of the plate (1).

L'extrémité (6b) de la tige 6 permet le guidage dans le sol pour assurer une bonne rotation du dispositif d'ancrage, notamment au début de la pénétration de l'organe d'ancrage dans le sol par action du bord d'attaque (3).The end (6b) of the rod 6 allows guidance in the ground to ensure good rotation of the anchoring device, especially at the beginning of the penetration of the anchor member into the ground by action of the leading edge (3).

Le contour des organes d'ancrage selon l'invention est un contour sensiblement concave, à l'exception du bord d'attaque (3).The outline of the anchoring members according to the invention is a substantially concave contour, with the exception of the leading edge (3).

Le contour d'un organe d'ancrage selon l'invention peut varier, l'essentiel étant que l'organe d'ancrage présente une conformation sensiblement plane, un bord d'attaque tranchant (3) et un contour (4) courbe entourant le trou sensiblement elliptique et la tige (6) du dispositif d'ancrage.The outline of an anchoring member according to the invention may vary, the essential fact being that the anchoring member has a substantially flat conformation, a sharp leading edge (3) and a curved contour (4) surrounding the substantially elliptical hole and the rod (6) of the anchoring device.

Des essais ont montré qu'un angle d'inclinaison (A) de la plaque plane voisin de 35 degrés d'angle par rapport au sol donne de bons résultats, en combinaison avec un bord d'attaque (3) présentant un angle voisin de 42 degrés d'angle avec le grand axe de l'ellipse (2).Tests have shown that an angle of inclination (A) of the plane plate close to 35 degrees of angle with respect to the ground gives good results, in combination with a leading edge (3) presenting an angle close to 42 degrees of angle with the long axis of the ellipse (2).

La taille des organes d'ancrage dépend de la résistance à l'arrachement recherchée, étant précisé que les différents organes d'ancrage présentent une taille sensiblement homothétique par rapport au centre de l'ellipse (2) et choisie en fonction des caractéristiques mécaniques souhaitées.The size of the anchoring members depends on the desired pull-out resistance, it being specified that the various anchoring members have a substantially homothetic size with respect to the center of the ellipse (2) and chosen as a function of the desired mechanical characteristics. .

L'organe d'ancrage est de préférence réalisé par découpe d'un feuillard métallique sur presse.The anchoring member is preferably made by cutting a metal strip on a press.

Alternativement, l'organe d'ancrage peut être réalisé par découpe laser ou par une machine à poinçonner.Alternatively, the anchoring member may be made by laser cutting or by a punching machine.

Sur la figure 6, la tige (6) est destinée à être assemblée à au moins un manchon taraudé (7) soudé à un trou sensiblement elliptique (2) d'une plaque (1) constituant un organe d'ancrage.On the figure 6 , the rod (6) is intended to be assembled to at least one threaded sleeve (7) welded to a substantially elliptical hole (2) of a plate (1) constituting an anchoring member.

Cette disposition est analogue à la disposition des dispositifs d'ancrage du document EP 2 261 423 A1 permettant d'avoir un ancrage robuste en deux parties, de manière à réaliser un assemblage du dispositif sur site avant mise en place dans le milieu d'ancrage.This provision is analogous to the arrangement of the anchoring devices of the document EP 2 261 423 A1 allowing to have a robust anchoring in two parts, so as to achieve assembly of the device on site before installation in the anchoring medium.

La tige (6) comporte un filetage conique (8) qui se coince dans le taraudage du manchon taraudé (7) lors du vissage.The rod (6) has a conical thread (8) which gets stuck in the thread of the threaded sleeve (7) during screwing.

Le coincement entre le taraudage du manchon taraudé (7) et le filetage conique (8) est élastoplastique.The wedging between the thread of the threaded sleeve (7) and the conical thread (8) is elastoplastic.

L'invention couvre toutes variantes de conformations de vissage coopérantes permettant d'obtenir un coincement mécanique, par vissage entraînant une déformation élastoplastique.The invention covers all variants of cooperating screwing formations to obtain a mechanical jamming, by screwing resulting in elastoplastic deformation.

L'invention couvre notamment un filetage conique et un taraudage conique de mêmes conicités ou de conicités différentes, l'essentiel étant d'obtenir un coincement mécanique, lors de la continuation du mouvement de rotation pour visser le dispositif dans le sol, dans le sens du vissage de la tige correspondant à l'enfoncement dans le sol.The invention covers in particular a conical thread and a tapered tapping of the same conicities or different conicities, the essential being to obtain a mechanical jamming, during the continuation of the rotational movement to screw the device in the ground, in the direction screwing the rod corresponding to the depression in the ground.

Lors de l'utilisation du dispositif selon l'invention, l'effort de résistance au vissage d'un organe d'ancrage dans le sol contribue à augmenter encore le coincement mécanique de la tige et de l'organe d'ancrage. L'effort de rotation de la tige est par conséquent intégralement transmis à l'organe d'ancrage lors de son enfoncement dans le sol. Le coincement mécanique conduit, lors de l'enfoncement du disque hélicoïdal dans le milieu d'ancrage par vissage, à une déformation élastoplastique solidarisant définitivement par coincement la tige et le disque hélicoïdal. Cette solidarisation permet notamment de retirer par dévissage l'ensemble du dispositif d'ancrage solidarisé, dans le cas où l'utilisateur cherche à récupérer le dispositif, ou dans le cas où l'utilisateur s'est trompé d'emplacement pour implanter le dispositif.When using the device according to the invention, the resistance force to the screwing of an anchoring member in the ground contributes to further increase the mechanical jamming of the rod and the anchoring member. The rotational force of the rod is therefore integrally transmitted to the anchor member during its insertion into the ground. The mechanical jamming leads, during the driving of the helical disk in the screw anchoring medium, to an elastoplastic deformation that permanently secures the pin and the helical disk by wedging. This fastening makes it possible in particular to remove by unscrewing the entire secured anchoring device, in the case where the user tries to retrieve the device, or in the case where the user has made a mistake in locating the device. .

La tige (6) comporte une extrémité (6b) dépassante sur une distance « d » comprise entre 0 et 100 mm par rapport au plan perpendiculaire à la tige (6) et tangent au bas de la plaque (1).The rod (6) has an end (6b) protruding over a distance "d" of between 0 and 100 mm from the plane perpendicular to the rod (6) and tangent to the bottom of the plate (1).

Cette extrémité (6b) dépassante assure le guidage dans la terre et la bonne rotation du dispositif d'ancrage, lors de la pénétration dans le sol.This protruding end (6b) ensures the guidance in the ground and the correct rotation of the anchoring device during the penetration into the ground.

Le fait de constituer des dispositifs d'ancrage en plusieurs parties comprenant des tronçons de tiges et des organes d'ancrage munis de manchons filetés ou taraudés permet de réduire l'encombrement des dispositifs lors du transport avant assemblage.The fact of forming multi-part anchoring devices comprising sections of rods and anchoring members provided with threaded or threaded sleeves makes it possible to reduce the size of the devices during transportation before assembly.

Une plaque (1) munie d'un manchon taraudé (7) et constituant un organe d'ancrage présente un angle d'inclinaison (A) par rapport à un plan perpendiculaire à l'axe du manchon taraudé (7).A plate (1) provided with a threaded sleeve (7) and constituting an anchoring member has an angle of inclination (A) with respect to a plane perpendicular to the axis of the threaded sleeve (7).

Cet angle (A) est de préférence compris entre 25 et 40 degrés d'angle, par exemple voisin de 35 degrés d'angleThis angle (A) is preferably between 25 and 40 degrees of angle, for example close to 35 degrees of angle

L'axe du manchon taraudé (7) se projette perpendiculairement selon la direction du grand axe de l'ellipse (2).The axis of the threaded sleeve (7) projects perpendicularly in the direction of the major axis of the ellipse (2).

Le bord d'attaque (3) de la plaque (1) munie d'un manchon taraudé (7) et constituant un organe d'ancrage forme avec la direction du grand axe de l'ellipse (2) un angle (5) avantageusement compris entre 40 et 45 degrés d'angle.The leading edge (3) of the plate (1) provided with a threaded sleeve (7) and forming an anchoring member forms with the direction of the major axis of the ellipse (2) an angle (5) advantageously between 40 and 45 degrees of angle.

Dans le cas non représenté de deux secteurs d'attaque (3a) et (3b), la tangente aux deux secteurs d'attaque (3a) et (3b) forme avec la direction du grand axe de l'ellipse (2) un angle (5) avantageusement compris entre 40 et 45 degrés d'angle.In the not shown case of two leading sectors (3a) and (3b), the tangent to the two leading sectors (3a) and (3b) forms with the direction of the major axis of the ellipse (2) an angle (5) advantageously between 40 and 45 degrees of angle.

La plaque (1) peut être renforcée à l'aide d'une nervure (1 a), pour éviter des déformations indésirables « en forme de parapluie » lors d'une traction ou d'un arrachement de l'ancrage.The plate (1) can be reinforced with a rib (1 a), to avoid unwanted "umbrella-shaped" deformations when pulling or tearing the anchor.

Une ou plusieurs nervures (1 a) peuvent être formées lors de la découpe de la pièce. Ces nervures (1 a) peuvent avantageusement de forme courbe.One or more ribs (1 a) may be formed during cutting of the workpiece. These ribs (1 a) may advantageously have a curved shape.

L'invention décrite en référence à plusieurs modes de réalisation ne leur est nullement limitée, mais couvre au contraire toute modification de forme et toute variante de réalisation dans le cadre des revendications annexées.The invention described with reference to several embodiments is not in any way limited to them, but on the contrary covers any modification of form and any variant embodiment within the scope of the appended claims.

Claims (11)

  1. An anchoring member essentially made of a substantially planar plate (1) and having a leading edge (3) and a curved contour (4) surrounding a passage (2) having an at least partially substantially elliptical configuration.
  2. The anchoring member according to claim 1, characterized in that the leading edge of an anchoring member includes a curved sharp edge (3a, 3b).
  3. The anchoring member according to claim 1, characterized in that the leading edge of an anchoring member includes a straight sharp edge (3).
  4. The anchoring member according claim 1, characterized in that the plate (1) of an anchoring member has a reinforcing rib (1 a).
  5. The anchoring member according to claim 4, characterized in that the reinforcing rib (1 a) of an anchoring member is a curved rib (1 a) extending substantially parallel to the curved contour (4) of the anchoring member, so as to surround the central passage having an at least partially substantially elliptical configuration of the anchoring member.
  6. An anchoring device including an anchoring rod (6) having one end (6a) intended to protrude from an anchoring medium, and including at least one anchoring member essentially made up of a substantially planar plate (1) and having a leading edge (3) and a curved contour (4) surrounding a passage (2) having an at least partially substantially elliptical configuration provided for fastening of the rod (6).
  7. The anchoring device according to claim 6, characterized in that the passage (2) having an at least partially substantially elliptical configuration is assembled by welding to the rod (6) of the anchoring device.
  8. The anchoring device according to claim 6, characterized in that the passage (2) having an at least partially substantially elliptical configuration is assembled to a sleeve (7), and in that this sleeve (7) is configured to cooperate with a rod (6) by ensuring mechanical jamming by elastoplastic deformation.
  9. The anchoring device according to claim 6, characterized in that the anchoring member (1) is assembled to the anchoring rod (6) with a predetermined fixed incline.
  10. The anchoring device according to claim 6, characterized in that the leading edge (3) of the anchoring member is positioned at a predetermined fixed angle relative to the perpendicular projection of the axis of the rod (6) on the plane of the plate (1) of the anchoring member, this perpendicular projection of the axis of the rod (6) on the plane of the plate (1) of the anchoring member corresponding to the large axis of the passage (2) having an at least partially substantially elliptical configuration provided for fastening of the rod (6).
  11. The anchoring device according to claim 6, characterized in that the device includes one end (6b) to provide guiding in the dirt and proper rotation of the anchoring device, during penetration in the soil.
EP13169343.4A 2012-06-19 2013-05-27 Anchor member and corresponding anchoring device Active EP2677084B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1255716A FR2992003B1 (en) 2012-06-19 2012-06-19 ANCHORING DEVICE AND CORRESPONDING ANCHORING DEVICE

Publications (3)

Publication Number Publication Date
EP2677084A2 EP2677084A2 (en) 2013-12-25
EP2677084A3 EP2677084A3 (en) 2016-10-05
EP2677084B1 true EP2677084B1 (en) 2017-03-29

Family

ID=47022768

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13169343.4A Active EP2677084B1 (en) 2012-06-19 2013-05-27 Anchor member and corresponding anchoring device

Country Status (3)

Country Link
EP (1) EP2677084B1 (en)
ES (1) ES2628346T3 (en)
FR (1) FR2992003B1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8726483D0 (en) * 1987-11-12 1987-12-16 Bicc Plc Soil stabilisation
FR2626302A1 (en) * 1988-01-21 1989-07-28 Amaragri Sarl Anchoring device
FR2946673B1 (en) * 2009-06-11 2018-03-16 Jean Edouard Gissinger DISC ANCHORING SYSTEM

Non-Patent Citations (1)

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

Also Published As

Publication number Publication date
EP2677084A2 (en) 2013-12-25
ES2628346T3 (en) 2017-08-02
EP2677084A3 (en) 2016-10-05
FR2992003B1 (en) 2014-07-18
FR2992003A1 (en) 2013-12-20

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