WO2017029439A1 - Reinforced, dynamic lifting anchor for a structural member - Google Patents

Reinforced, dynamic lifting anchor for a structural member Download PDF

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Publication number
WO2017029439A1
WO2017029439A1 PCT/FR2016/050181 FR2016050181W WO2017029439A1 WO 2017029439 A1 WO2017029439 A1 WO 2017029439A1 FR 2016050181 W FR2016050181 W FR 2016050181W WO 2017029439 A1 WO2017029439 A1 WO 2017029439A1
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WO
WIPO (PCT)
Prior art keywords
anchor
head
flats
foot
flat
Prior art date
Application number
PCT/FR2016/050181
Other languages
French (fr)
Inventor
Marcel Arteon
Original Assignee
Marcel Arteon
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Marcel Arteon filed Critical Marcel Arteon
Priority to AU2016308573A priority Critical patent/AU2016308573A1/en
Priority to CN201680048036.4A priority patent/CN108474214A/en
Priority to US15/752,406 priority patent/US20190003192A1/en
Priority to EP16707849.2A priority patent/EP3334874A1/en
Publication of WO2017029439A1 publication Critical patent/WO2017029439A1/en

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Classifications

    • 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
    • E04G21/14—Conveying or assembling building elements
    • E04G21/142—Means in or on the elements for connecting same to handling apparatus
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38—Connections for building structures in general
    • E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
    • 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

Definitions

  • the invention relates to a dynamic lifting anchor, a construction element, such as a concrete panel in particular, cast horizontally, for lifting said panel without mechanical means or additional reinforcements.
  • This anchor comprises in known manner a head portion capable of being attached to a gripping ring, a foot and a body interposed between the head and the foot, the body and the foot being intended to be immersed in the constituent material of the construction element, the anchor being obtained by folding at least one flat, of which different successive portions respectively form the head, the body and the foot of the anchor.
  • an anchor comprising a rigidity box, formed at the foot of the anchor by two opposing divergent flattening legs and two converging lower branches, has the advantage of maintaining the angle of diverging branches and thus the amplitude of the cone of compression generated when lifting a building element.
  • an anchor of this type is not particularly suitable for lifting particularly heavy construction elements and thus limited its scope.
  • the invention aims to overcome these disadvantages.
  • the invention relates to a lifting anchor of a construction element, such as a concrete panel, comprising a head portion capable of being attached to a gripping ring, a foot and a body interposed between the head and the foot, the body and the foot being intended to be immersed in the material constituting the construction element, the anchor being obtained by folding at least one flat defining different successive portions respectively forming the head, the body and the foot of the anchor, the constituent portions of the foot of the anchor comprising two lower branches diverging on either side of the body of the anchor, and two branches converge one towards the other and extending from divergent branches.
  • the anchor comprises a reinforcing piece interposed between the two flat surfaces or portions, extending from the head of the anchor on at least a part of the body.
  • the invention may furthermore exhibit one or both of the following aspects:
  • the reinforcing piece is in the form of a flat.
  • the reinforcing flat extends to half-height of the body of the anchor.
  • the reinforcing flat extends to the lower ends of the converging branches.
  • the anchor comprises locking means converging branches against each other.
  • the locking means of a converging branch to the other comprise at least one projection formed on the lower free edge of the converging branch, and a receiving housing of this projection, formed in the thickness of the opposite divergent branch from its lower free edge, the projection being engaged in the housing when the flat head portions of the anchor and the reinforcement interposed therebetween, are pressed against each other.
  • the locking means comprise a single projection offset transversely with respect to the center of the free edge of the diverging branch, and a cutout forming the receiving housing, the two lower free edges of the two converging branches each having a single projection and a cutting.
  • the locking means comprise a plurality of protrusions and a plurality of cutouts, the projections and cutouts alternating each other along the lower free edge of the converging limb, the two lower free edges of the two converging limbs each having a plurality of projections; and several cuts forming notches.
  • the anchor is formed of two identical flats assembled on either side of the reinforcement.
  • the reinforcement comprises a passage window for the locking means made in its thickness.
  • the anchor comprises on each of the outer faces of the two twinned flats, at least one external lifting ribs (31).
  • the outer rib (31) extends along a longitudinal axis of the anchor (A-A ') or in a direction inclined relative to this axis.
  • the two paired flats (12a, 12b), and / or at least one of the flats (12a, 12b) and the central reinforcement (20) are secured to one another by a bridge of material formed by a part of flat folded along a fold (33, 36, 37).
  • the fold (33, 36, 37) extends along a lateral edge of the head of the anchor, or an upper edge of the head of the anchor or a lower edge of the foot of the anchor.
  • FIGS. 1 and 2 are a perspective view of an anchor according to a first embodiment of the invention, unassembled (FIG. 1) and assembled (FIG. 2).
  • FIGS. 3 and 4 are a perspective view of an anchor according to a second embodiment of the invention, unassembled (FIG. 3) and assembled (FIG. 4).
  • Figures 5 and 6 show in perspective view an anchor according to a third embodiment of the invention unassembled ( Figure 5) and assembled ( Figure 6)
  • FIGS. 7A and 7B show an alternative embodiment of a lifting and lifting anchor advantageously provided with two longitudinal ribs protruding outwardly from the lateral faces of the two flats, and respectively by a front view (7A) and a perspective view. (7B), FIG. 7A further illustrating in dashed lines the possibility of interposing a central reinforcement between the two flats provided with external longitudinal ribs;
  • FIGS. 8 to 11 show, in perspective views, an alternative embodiment of the assembly of two flats constituting an anchor without reinforcement (FIGS. 8 to 10), and with reinforcement (FIG. 11) allowing a fixed relative hold of the various constituent flats of the anchor,
  • Figure 12 shows schematically flat different constituent flats of the anchor of Figure 11 and their junctions in pairs.
  • the anchor according to the invention comprises a head part 1, a part 2 forming the body of the anchor and a part 3 forming the foot. - -
  • the anchor with the exception of the head 1 which remains outside the material of the construction element and is adapted to be attached to a handling machine, is intended to be embedded in the constituent material of the construction element whose anchor is intended to facilitate handling.
  • this element of construction can be a slab or a concrete panel and the head 1 of the anchor is accessible from a free edge of the panel in which has been practiced a recess or "reservation" authorizing the passing of the head 1 of the anchor, while the body 2 and foot 3 of the anchor are immersed in the concrete.
  • the anchor according to FIG. 3 is made from two identical flats 12a, 12b, that is to say two rigid strips, for example of metal whose thickness is small relative to the width, which are each folded according to four folding lines C, D, A, B to define successively for the flat part considered, in accordance with FIG. 1 (the references associated with the letter “a” refer to the flat part 12a, the references associated with the letter "b” being report to flat 12b):
  • a branch 7a, 7b extending under the head portion 6a and diverging above the plane formed by this head portion, at a slight angle of about 15 ° for example, the two branches of the two flats diverging one relative to each other in the direction of the foot of the anchor,
  • a convergent branch 8a, 8b extending under the branch 7a over a greater or lesser length for example of approximately 8 to 13 cm, making it possible to keep the foot of the anchor deep in the construction element,
  • a converging branch 10a extending under the divergent branch to join the plane P and come to bear by its lower end against that of the converging branch 10b of the other flat.
  • these flats In order to allow their folding along the fold lines A-D, these flats have a thickness generally less than 15 mm.
  • This anchor with two twin flats is arranged in the panel so that the plane in which the width of the flats fits is confused with the lifting plane.
  • the diverging lower branches 9a, 9b define active faces which, combined with the developed surface of the flat part, make it possible to urge the concrete both for adhesion and for shearing at the level of the anchors generated by the facets.
  • these branches 9a, 9b define during lifting, a compression zone centered on the main plane of the anchor, the top of which is situated towards the foot of the anchor and whose the base extends around the head of the anchor.
  • the amplitude of the base of the compression zone is all the more important that the inclination of a branch 9a, 9b is close to 45 °, and even lower than this inclination is close to a horizontal plane .
  • Converging branches 10a, 10b which, according to this embodiment, are in contact with one another by their lower end edge, make it possible to maintain fixed the inclination of the divergent branches with respect to the longitudinal plane P of the flat when lifting the panel.
  • the anchor comprises a reinforcement piece interposed between the two flats.
  • the reinforcing piece is in the form of a plate 13 preferably having a length and a width substantially similar to those of a projection of the flats 12a, 12b between which it is arranged in the plane P.
  • the plate located in the plane P, thus has an upper end portion engaged between the end portions of the two flats defining the head of the anchor, the lower end being held between the lower edges of the branches. lower convergent 10a, 10b.
  • these two branches 10a, 10b and the part facing the plate comprise mutual locking means.
  • these complementary means comprise two flattening projections 21 respectively extending the two converging branches 10b beyond their lower transverse edges 22, and a window 24 is formed in the thickness of the plate of FIG. reinforcement 20 to accommodate the two projections 21 of the two converging branches 10a, 10b.
  • This window will be shaped to receive these two projections, that is to say it will have a width slightly greater than the cumulative widths of the two projections, and a height taking into account the inclination of these projections (which is that of the converging branches) to allow their insertion into the window on simple approximation of the two flats 12a, 12b to the plate 20.
  • the projections of the two converging branches are offset from each other with respect to the longitudinal axis Al- ⁇ of each flat to allow their concomitant engagement in the window.
  • the projections of the two flats are offset with respect to the axis Al- ⁇ of the same gap so that the two flats are identical and can be arranged on one side or the other of the plane P.
  • the projections are each arranged so as to be able to dock against each other when assembling the flats around the plate 20, that is to say with a lateral edge coinciding with the axis ⁇ 1- ⁇ .
  • the anchor according to FIGS. 1 and 2 also comprises two flats 12a, 12b assembled on either side of a reinforcing plate 20 whose convergent branches 10a, 10b are provided with projections 21 which engage in a corresponding window.
  • the plate or reinforcement 20 interposed between the two flats 12a, 12b does not extend over the length of the projection in the plane P of the two flats, but at substantially half length flat body. It does not need to be provided with a window for the protrusions of the converging branches since it remains interposed between the head parts and the upper part of the body of the anchor.
  • Converging branches comprise locking means directly to one another, being in the form of complementary notches 26 formed on the lower transverse edge of these branches. Ideally, the two flats facing the notches are identical.
  • the hollows of the notches of a convergent branch allow the engagement of the projections of the notches of the other convergent branch.
  • the reinforcement can be attached to the two flats by rivets at the head of the anchor and / or the body of the anchor.
  • the central reinforcement may be provided between two flats with constituent ribs of the anchor.
  • the anchor may comprise two longitudinal ribs 31 protruding externally outer side faces 32 of the two flats.
  • These longitudinal ribs make it possible to achieve an effective lifting and turning anchor because of the flat mass of concrete trapped above the upper surface of the ribs when the panel is raised from a horizontal position to a vertical position.
  • These external ribs may be formed by recessing the flats of an anchor with a punch of a shape adapted to the desired rib shape. Depending on this shape, it is possible to obtain the optimal lifting force profile. We can optimize the shape of each rib to achieve this goal.
  • the anchor is formed by the pairing of two flats forming together a foot diverging branches 9a, 9b in particular at 45 ° and subjacent converging branches 10a, 10b forming an angle of about 60 ° -70
  • convergent branches intermediate adhesion facets 7a, 7b, 8a, 8b whose upper facets 7a, 7b make an angle ⁇ of about 15 ° with the plane P, and the lower facets 8a, 8b an angle ⁇ about 160 ° with the corresponding upper facet.
  • the outer rib 31 extends in this example along a lower portion of the upper facet 7a, 7b extends on the lower facet 8a, 8b to near the beginning of the foot (deviation of about 1/10 of the total length of the anchor). It represents a width equivalent to about a quarter of the width of a flat, and the height of the external boss that it forms is equivalent to the thickness of the flat.
  • This rib presents in the illustrated example, a generally oblong shape. It may advantageously have a substantially triangular shape.
  • an anchor with twin flats may have flats provided with external ribs, and not necessarily be provided with a central flat.
  • the central reinforcement 20 can be secured to one of the two flats 12a by means of a flat fold 33 interposed according to FIG. 12, between two portions of flats in the extension l one of the other in the configuration "flat” or “not yet shaped” of the anchor and forming, when the anchor is shaped, the central reinforcement 20 and one of the two flats 12a.
  • this fold 33 is found to coincide with the lower end of the foot of the anchor when shaped.
  • the reinforcement 20 may be secured to the other flat 12b by means of a second fold 36 interposed according to FIG. 12, between two portions of flats side by side in the "flat" configuration of the anchor and forming, when the anchor is shaped, the central reinforcement 20 and the other flats 12b.
  • This second fold 36 is found to coincide with an upper lateral portion of the anchor.
  • the assembly of two flats to one another by means of a fold or fold of flattened integral with the two flats and forming a junction between those ci can be operated at the lower end of the anchor between the two converging branches of two constituent flats of the anchor ( Figure 8) by the fold 33, on a lateral portion of the head of the anchor ( Figure 9 ) between the two lateral edges of the two head portions of the two flats paired by the fold 36, or at the upper end of the anchor between the two upper edges of the two head portions of the two twin flats ( Figure 10) by the fold 37.
  • the "pattern" from which these three anchors are formed includes: FIG.
  • the flat part will comprise additional fold lines to define two slightly divergent upper limbs (for example at 15 ° with respect to the plane P), two converging upper branches joining the plane P, and a rigidity box with branches divergent at 45 ° and converging branches at an angle of about 80 °.
  • the total length of this anchor may be between 100 and 400 mm, the width of the flat of 20, 25, 30, 40, 60 or 80 mm, the thickness of the flat between 3 and 8 mm
  • FIG. 9 two portions of flat surface side by side united by a flattened bridge of a width of the order of two thicknesses of flat, the median line of this bridge of material being capable of forming the fold,
  • FIG. 10 shows two flattened portions in the extension of one another of a length coinciding with the extended length of each flattened flat, these two flat portions being separated by a line at half length capable of forming the fold 37 and located at a constriction for forming the upper edge of the anchor of lesser width than the rest of the head and body of the anchor.
  • the anchor according to the invention has major advantages over the anchors of the state of the art.
  • An anchor of this type is made by a simple and inexpensive manufacturing process, based on the folding of a single or two flats allows thanks to the reinforcement to achieve the lifting of relatively heavy construction elements.
  • the particularities of the embodiments such as the square, triangular or diamond shaped section of the box, the inclination at 10, 20, ... 45 [deg.]
  • the presence or the the absence of diverging upper branches within the body of the anchor, their number can be combined with each other to define an optimal anchorage according to the building element to be lifted.
  • one or more reinforcements may be interposed between the flats of the anchor, these reinforcements may also have different shapes outside the flats.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Joining Of Building Structures In Genera (AREA)
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Abstract

The invention relates to a lifting anchor for a structural member, such as a concrete panel, comprising a head part able to be coupled with a gripping ring, a foot and a body interposed between the head and the foot, the head and the foot being intended to be embedded in the material of which the structural member is made, the anchor being obtained by folding at least one flat defining different successive portions that form the head, the body and the foot, respectively, of the anchor, the constituent portions of the foot of the anchor comprising two lower branches that diverge on either side of the body of the anchor. According to the invention, the anchor comprises a reinforcing part (20) interposed between the two flats or flat portions, extending from the head of the anchor along at least a part of the body.

Description

ANCRE DYNAMIQUE DE LEVAGE  DYNAMIC LIFTING ANCHOR
D'UN ELEMENT DE CONSTRUCTION, RENFORCEE  BUILDING ELEMENT, REINFORCED
L'invention concerne une ancre dynamique de levage, d'un élément de construction, tel qu'un panneau de béton notamment, coulé à l'horizontale, permettant de soulever le dit panneau sans moyens mécaniques ni sans armatures supplémentaires. The invention relates to a dynamic lifting anchor, a construction element, such as a concrete panel in particular, cast horizontally, for lifting said panel without mechanical means or additional reinforcements.
Cette ancre comprend de façon connue une partie de tête susceptible d'être accrochée à un anneau de préhension, un pied et un corps interposé entre la tête et le pied, le corps et le pied étant destinés à être immergés dans le matériau constitutif de l'élément de construction, l'ancre étant obtenue par repliement d'au moins un méplat, dont différentes portions successives forment respectivement la tête, le corps et le pied de l'ancre.  This anchor comprises in known manner a head portion capable of being attached to a gripping ring, a foot and a body interposed between the head and the foot, the body and the foot being intended to be immersed in the constituent material of the construction element, the anchor being obtained by folding at least one flat, of which different successive portions respectively form the head, the body and the foot of the anchor.
Egalement, une ancre comportant un caisson de rigidité, formé au pied de l'ancre par deux branches de méplat divergentes opposées et deux branches inférieures convergentes, présente l'avantage de maintenir l'angle des branches divergentes et ainsi l'amplitude du cône de compression généré lors du levage d'un élément de construction.  Also, an anchor comprising a rigidity box, formed at the foot of the anchor by two opposing divergent flattening legs and two converging lower branches, has the advantage of maintaining the angle of diverging branches and thus the amplitude of the cone of compression generated when lifting a building element.
Cependant, une ancre de ce type n'est pas particulièrement adaptée au levage d'éléments de construction particulièrement lourds et voit ainsi limité son champ d'application.  However, an anchor of this type is not particularly suitable for lifting particularly heavy construction elements and thus limited its scope.
L'invention vise à pallier ces inconvénients.  The invention aims to overcome these disadvantages.
A cet effet, l'invention concerne une ancre de levage d'un élément de construction, tel qu'un panneau de béton, comprenant une partie de tête susceptible d'être accrochée à un anneau de préhension, un pied et un corps interposé entre la tête et le pied, le corps et le pied étant destinés à être immergés dans le matériau constitutif de l'élément de construction, l'ancre étant obtenue par repliement d'au moins un méplat définissant différentes portions successives formant respectivement la tête, le corps et le pied de l'ancre, les portions constitutives du pied de l'ancre comprenant deux branches inférieures divergeant de part et d'autre du corps de l'ancre, et deux branches convergent l'une vers l'autre et s'étendant à partir des branches divergentes. To this end, the invention relates to a lifting anchor of a construction element, such as a concrete panel, comprising a head portion capable of being attached to a gripping ring, a foot and a body interposed between the head and the foot, the body and the foot being intended to be immersed in the material constituting the construction element, the anchor being obtained by folding at least one flat defining different successive portions respectively forming the head, the body and the foot of the anchor, the constituent portions of the foot of the anchor comprising two lower branches diverging on either side of the body of the anchor, and two branches converge one towards the other and extending from divergent branches.
Selon l'invention, l'ancre comprend une pièce de renfort interposée entre les deux méplats ou parties de méplat, s'étendant depuis la tête de l'ancre sur au moins une partie du corps.  According to the invention, the anchor comprises a reinforcing piece interposed between the two flat surfaces or portions, extending from the head of the anchor on at least a part of the body.
L'invention peut par ailleurs présenter l'un et/ou l'autre des aspects suivants : The invention may furthermore exhibit one or both of the following aspects:
- la pièce de renfort se présente sous la forme d'un méplat. - The reinforcing piece is in the form of a flat.
- le méplat de renfort s'étend jusqu'à mi-hauteur du corps de l'ancre. - The reinforcing flat extends to half-height of the body of the anchor.
- le méplat de renfort s'étend jusqu'aux extrémités inférieures des branches convergentes. - The reinforcing flat extends to the lower ends of the converging branches.
- L'ancre comprend des moyens de verrouillage des branches convergentes l'une contre l'autre. The anchor comprises locking means converging branches against each other.
- les moyens de verrouillage d'une branche convergente à l'autre comprennent au moins une saillie formée sur le bord libre inférieur de la branche convergente, et un logement d'accueil de cette saillie, ménagé dans l'épaisseur de la branche divergente opposée à partir de son bord libre inférieur, la saillie étant engagée dans le logement lorsque les parties de tête de méplat de l'ancre et du renfort interposé entre elles, sont plaquées les unes contre les autres. - les moyens de verrouillage comprennent une saillie unique décalée transversalement vis à vis du centre du bord libre de la branche divergente, et une découpe formant le logement d'accueil, les deux bords libres inférieurs des deux branches convergentes comportant chacun une saillie unique et une découpe. - The locking means of a converging branch to the other comprise at least one projection formed on the lower free edge of the converging branch, and a receiving housing of this projection, formed in the thickness of the opposite divergent branch from its lower free edge, the projection being engaged in the housing when the flat head portions of the anchor and the reinforcement interposed therebetween, are pressed against each other. the locking means comprise a single projection offset transversely with respect to the center of the free edge of the diverging branch, and a cutout forming the receiving housing, the two lower free edges of the two converging branches each having a single projection and a cutting.
- les moyens de verrouillage comprennent plusieurs saillies et plusieurs découpes, les saillies et les découpes s' alternant l'une l'autre le long du bord libre inférieur de la branche convergente, les deux bords libres inférieurs des deux branches convergentes comportant chacun plusieurs saillies et plusieurs découpes formant des crans. the locking means comprise a plurality of protrusions and a plurality of cutouts, the projections and cutouts alternating each other along the lower free edge of the converging limb, the two lower free edges of the two converging limbs each having a plurality of projections; and several cuts forming notches.
- L'ancre est formée de deux méplats identiques assemblés de part et d'autre du renfort. - The anchor is formed of two identical flats assembled on either side of the reinforcement.
- le renfort comprend une fenêtre de passage des moyens de verrouillage réalisée dans son épaisseur. the reinforcement comprises a passage window for the locking means made in its thickness.
- l'ancre comprend sur chacune des faces externes des deux méplats jumelés, au moins une nervures externe de relevage (31). - The anchor comprises on each of the outer faces of the two twinned flats, at least one external lifting ribs (31).
- la nervure externe (31) s'étend suivant un axe longitudinal de l'ancre (A- A') ou suivant une direction inclinée par rapport à cet axe.  - The outer rib (31) extends along a longitudinal axis of the anchor (A-A ') or in a direction inclined relative to this axis.
- les deux méplats jumelés (12a, 12b), et/ou au moins l'un des méplats (12a, 12b) et le renfort central (20) sont solidarisés l'un à l'autre par un pont de matière formé par une partie de méplat replié suivant une pliure (33, 36, 37).  the two paired flats (12a, 12b), and / or at least one of the flats (12a, 12b) and the central reinforcement (20) are secured to one another by a bridge of material formed by a part of flat folded along a fold (33, 36, 37).
- la pliure (33, 36, 37) s'étend suivant un bord latéral de la tête de l'ancre, ou un bord supérieur de la tête de l'ancre ou un bord inférieur du pied de l'ancre. L'invention sera maintenant décrite en référence aux figures annexées représentant schématiquement différents modes de réalisation de l'invention et parmi lesquelles : - The fold (33, 36, 37) extends along a lateral edge of the head of the anchor, or an upper edge of the head of the anchor or a lower edge of the foot of the anchor. The invention will now be described with reference to the appended figures schematically representing various embodiments of the invention and among which:
les figures 1 et 2 représentent par une vue en perspective une ancre selon un premier mode de réalisation de l'invention non assemblée (figure 1) et assemblée (figure 2)  FIGS. 1 and 2 are a perspective view of an anchor according to a first embodiment of the invention, unassembled (FIG. 1) and assembled (FIG. 2).
les figures 3 et 4 représentent par une vue en perspective une ancre selon un deuxième mode de réalisation de l'invention non assemblée (figure 3) et assemblée (figure 4)  FIGS. 3 and 4 are a perspective view of an anchor according to a second embodiment of the invention, unassembled (FIG. 3) and assembled (FIG. 4).
- les figures 5 et 6 représentent par une vue en perspective une ancre selon un troisième mode de réalisation de l'invention non assemblée (figure 5) et assemblée (figure 6)  - Figures 5 and 6 show in perspective view an anchor according to a third embodiment of the invention unassembled (Figure 5) and assembled (Figure 6)
les figures 7 A et 7B représentent une variante de réalisation d'une ancre de levage et relevage avantageusement pourvue de deux nervures longitudinales faisant saillie extérieurement des faces latérales des deux méplats, et respectivement par une vue de face (7A) et une vue en perspective (7B), la figure 7 A illustrant en outre en pointillés la possibilité d'interposer un renfort central entre les deux méplats pourvus de nervures longitudinales externes les figures 8 à 11 représentent par des vues en perspective une variante de réalisation de l'assemblage des deux méplats constitutifs d'une ancre sans renfort (figures 8 à 10), et avec renfort (figure 11) permettant un maintien relatif fixes des différents méplats constitutifs de l'ancre,  FIGS. 7A and 7B show an alternative embodiment of a lifting and lifting anchor advantageously provided with two longitudinal ribs protruding outwardly from the lateral faces of the two flats, and respectively by a front view (7A) and a perspective view. (7B), FIG. 7A further illustrating in dashed lines the possibility of interposing a central reinforcement between the two flats provided with external longitudinal ribs; FIGS. 8 to 11 show, in perspective views, an alternative embodiment of the assembly of two flats constituting an anchor without reinforcement (FIGS. 8 to 10), and with reinforcement (FIG. 11) allowing a fixed relative hold of the various constituent flats of the anchor,
la figure 12 représente schématiquement à plat les différents méplats constitutifs de l'ancre de la figure 11 et leurs jonctions deux à deux.  Figure 12 shows schematically flat different constituent flats of the anchor of Figure 11 and their junctions in pairs.
Conformément aux figures annexées, l'ancre selon l'invention comporte une partie de tête 1, une partie 2 formant le corps de l'ancre et une partie 3 formant le pied. - - According to the appended figures, the anchor according to the invention comprises a head part 1, a part 2 forming the body of the anchor and a part 3 forming the foot. - -
L'ancre, à l'exception de la tête 1 qui reste à l'extérieur du matériau de l'élément de construction et est adaptée pour être accrochée à un engin de manutention, est destinée à être noyée dans le matériau constitutif de l'élément de construction dont l'ancre est destinée à faciliter la manutention. The anchor, with the exception of the head 1 which remains outside the material of the construction element and is adapted to be attached to a handling machine, is intended to be embedded in the constituent material of the construction element whose anchor is intended to facilitate handling.
En général, cet élément de construction peut être une dalle ou un panneau de béton et la tête 1 de l'ancre est accessible depuis une tranche libre du panneau au sein de laquelle a été pratiqué un évidemment ou "réservation" autorisant le dépassement de la tête 1 de l'ancre, alors que le corps 2 et le pied 3 de l'ancre sont immergés dans le béton. In general, this element of construction can be a slab or a concrete panel and the head 1 of the anchor is accessible from a free edge of the panel in which has been practiced a recess or "reservation" authorizing the passing of the head 1 of the anchor, while the body 2 and foot 3 of the anchor are immersed in the concrete.
L'ancre selon la figure 3 est réalisée à partir de deux méplats identiques 12a, 12b, c'est-à-dire deux bandes rigides par exemple en métal dont l'épaisseur est faible par rapport à la largeur, qui sont chacun plié suivant quatre lignes de pliage C, D, A, B pour définir successivement pour le méplat considéré, conformément à la figure 1 (les références associées à la lettre « a » se rapportent au méplat 12a, les références associées à la lettre « b » se rapportent au méplat 12b) : The anchor according to FIG. 3 is made from two identical flats 12a, 12b, that is to say two rigid strips, for example of metal whose thickness is small relative to the width, which are each folded according to four folding lines C, D, A, B to define successively for the flat part considered, in accordance with FIG. 1 (the references associated with the letter "a" refer to the flat part 12a, the references associated with the letter "b" being report to flat 12b):
- une partie de tête 6a verticale et plaquée contre la partie de tête 6b de l'autre méplat, s'étendant selon un plan P  - A vertical head portion 6a and pressed against the head portion 6b of the other flat, extending along a plane P
- une branche 7a, 7b s'étendant sous la partie de tête 6a et divergeant au dessus du plan formé par cette partie de tête, suivant un angle faible d'environ 15° par exemple, les deux branches des deux méplats divergeant l'une par rapport à l'autre en direction du pied de l'ancre,  a branch 7a, 7b extending under the head portion 6a and diverging above the plane formed by this head portion, at a slight angle of about 15 ° for example, the two branches of the two flats diverging one relative to each other in the direction of the foot of the anchor,
- une branche convergente 8a, 8b s'étendant sous la branche 7a sur une longueur plus ou moins importante par exemple d'environ 8 à 13 cm, permettant de maintenir le pied de l'ancre en profondeur dans l'élément de construction,  a convergent branch 8a, 8b extending under the branch 7a over a greater or lesser length for example of approximately 8 to 13 cm, making it possible to keep the foot of the anchor deep in the construction element,
- une branche inférieure divergente 9a inclinée au dessus du plan principal du méplat P défini par la tête 6a, 6b de l'ancre, à environ 70°, - une branche convergente 10a s'étendant sous la branche divergente pour rejoindre le plan P et venir en appui par son extrémité inférieure contre celle de la branche convergente 10b de l'autre méplat. a diverging lower branch 9a inclined above the main plane of the flat part P defined by the head 6a, 6b of the anchor, at approximately 70 °, - A converging branch 10a extending under the divergent branch to join the plane P and come to bear by its lower end against that of the converging branch 10b of the other flat.
Afin d'autoriser leur pliage suivant les lignes de pliage A-D, ces méplats présentent une épaisseur généralement inférieure à 15 mm.  In order to allow their folding along the fold lines A-D, these flats have a thickness generally less than 15 mm.
Cette ancre à deux méplats jumelés est disposée dans le panneau de façon que le plan dans lequel s'inscrit la largeur des méplats soit confondu avec le plan de relevage. This anchor with two twin flats is arranged in the panel so that the plane in which the width of the flats fits is confused with the lifting plane.
Les branches inférieures divergentes 9a, 9b définissent des faces actives qui, combinées à la surface développée du méplat permettent de solliciter le béton à la fois à l'adhérence et au cisaillement au droit des ancrages générés par les facettes. The diverging lower branches 9a, 9b define active faces which, combined with the developed surface of the flat part, make it possible to urge the concrete both for adhesion and for shearing at the level of the anchors generated by the facets.
Du fait de leur inclinaison par rapport au plan principal P, ces branches 9a, 9b définissent lors du levage, une zone de compression centrée sur le plan principal de l'ancre, dont le sommet est situé vers le pied de l'ancre et dont la base s'étend autour de la tête de l'ancre. L'amplitude de la base de la zone de compression est d'autant plus importante que l'inclinaison d'une branche 9a, 9b est proche de 45°, et d'autant plus faible que cette inclinaison est proche d'un plan horizontal. Because of their inclination with respect to the main plane P, these branches 9a, 9b define during lifting, a compression zone centered on the main plane of the anchor, the top of which is situated towards the foot of the anchor and whose the base extends around the head of the anchor. The amplitude of the base of the compression zone is all the more important that the inclination of a branch 9a, 9b is close to 45 °, and even lower than this inclination is close to a horizontal plane .
Les branches convergentes 10a, 10b, qui, selon ce mode de réalisation, sont en contact l'une contre l'autre par leur bord d'extrémité inférieur, permettent de maintenir fixe l'inclinaison des branches divergentes par rapport au plan longitudinal P du méplat lors du levage du panneau. Converging branches 10a, 10b, which, according to this embodiment, are in contact with one another by their lower end edge, make it possible to maintain fixed the inclination of the divergent branches with respect to the longitudinal plane P of the flat when lifting the panel.
Afin d'augmenter la résistance de l'ancre, et ainsi permettre le levage, d'éléments de construction particulièrement lourds, il peut être prévu que l'ancre comprenne une pièce de renfort interposée entre les deux méplats. Selon un mode de réalisation particulier, la pièce de renfort se présente sous la forme d'une plaque 13 présentant de préférence une longueur et une largueur sensiblement similaires à celles d'une projection des méplats 12a, 12b entre lesquels elle est disposée dans le plan P. La plaque, située dans le plan P, présente ainsi une portion d'extrémité supérieure en prise entre les parties d'extrémité des deux méplats définissant la tête de l'ancre, l'extrémité inférieure étant maintenue entre les bords inférieurs des branches inférieures convergentes 10a, 10b. In order to increase the resistance of the anchor, and thus allow lifting, particularly heavy construction elements, it may be provided that the anchor comprises a reinforcement piece interposed between the two flats. According to a particular embodiment, the reinforcing piece is in the form of a plate 13 preferably having a length and a width substantially similar to those of a projection of the flats 12a, 12b between which it is arranged in the plane P. The plate, located in the plane P, thus has an upper end portion engaged between the end portions of the two flats defining the head of the anchor, the lower end being held between the lower edges of the branches. lower convergent 10a, 10b.
Afin de permettre le verrouillage des deux branches convergentes 10a, 10b vis à vis de la plaque de renfort, ces deux branches 10a, 10b et la partie en regard de la plaque, comprennent des moyens de verrouillage mutuels.  In order to allow the locking of the two converging branches 10a, 10b with respect to the reinforcing plate, these two branches 10a, 10b and the part facing the plate, comprise mutual locking means.
Dans l'exemple représenté sur la figure 1, ces moyens complémentaires comprennent deux saillies de méplat 21 prolongeant respectivement les deux branches convergentes 10b au-delà de leurs bords transversaux inférieurs 22, et une fenêtre 24 est ménagée dans l'épaisseur de la plaque de renfort 20 afin d'accueillir les deux saillies 21 des deux branches convergentes 10a, 10b.  In the example shown in FIG. 1, these complementary means comprise two flattening projections 21 respectively extending the two converging branches 10b beyond their lower transverse edges 22, and a window 24 is formed in the thickness of the plate of FIG. reinforcement 20 to accommodate the two projections 21 of the two converging branches 10a, 10b.
Cette fenêtre sera conformée pour recevoir ces deux saillies, c'est à dire qu'elle présentera une largeur légèrement supérieure aux largeurs cumulées des deux saillies, et une hauteur prenant en compte l'inclinaison de ces saillies (qui est celle des branches convergentes) afin de permettre leur insertion dans la fenêtre sur simple rapprochement des deux méplats 12a, 12b vers la plaque 20.  This window will be shaped to receive these two projections, that is to say it will have a width slightly greater than the cumulative widths of the two projections, and a height taking into account the inclination of these projections (which is that of the converging branches) to allow their insertion into the window on simple approximation of the two flats 12a, 12b to the plate 20.
Dans les exemples des figures 1 à 4, les saillies des deux branches convergentes sont décalées l'une de l'autre vis à vis de l'axe longitudinale Al-Α de chaque méplat pour permettre leur engagement concomitant dans la fenêtre.  In the examples of Figures 1 to 4, the projections of the two converging branches are offset from each other with respect to the longitudinal axis Al-Α of each flat to allow their concomitant engagement in the window.
En fait, les saillies des deux méplats sont décalées vis à vis de l'axe Al-Α du même écart afin que les deux méplats soient identiques et puissent être disposés d'un côté ou de l'autre du plan P. En l'occurrence, les saillies sont disposées chacune de façon à pouvoir accoster l'une contre l'autre lors de l'assemblage des méplats autour de la plaque 20, c'est à dire avec un bord latéral coïncidant avec l'axe Α1-Α . L'ancre selon les figures 1 et 2 comprend également deux méplats 12a, 12b assemblés de part et d'autre d'une plaque de renfort 20 dont les branches convergentes 10a, 10b sont munies de saillies 21 venant s'engager dans une fenêtre correspondante 24 de la plaque 20, saillies et fenêtre conformes à la description faite en référence aux figures 3 et 4, mais ses deux méplats sont dépourvues au niveau de leur corps 2, de facettes intermédiaires divergentes et convergente, si bien que le corps 2 de chaque méplat s'étend simplement dans le prolongement de la tête 6a, 6b dans le plan P. In fact, the projections of the two flats are offset with respect to the axis Al-Α of the same gap so that the two flats are identical and can be arranged on one side or the other of the plane P. In the In this case, the projections are each arranged so as to be able to dock against each other when assembling the flats around the plate 20, that is to say with a lateral edge coinciding with the axis Α1-Α. The anchor according to FIGS. 1 and 2 also comprises two flats 12a, 12b assembled on either side of a reinforcing plate 20 whose convergent branches 10a, 10b are provided with projections 21 which engage in a corresponding window. 24 of the plate 20, projections and window according to the description made with reference to Figures 3 and 4, but its two flats are devoid of their body 2, diverging intermediate facets and convergent, so that the body 2 of each flattened simply extends in the extension of the head 6a, 6b in the plane P.
Dans l'exemple représenté sur les figures 5 et 6, la plaque ou renfort 20 interposée entre les deux méplats 12a, 12b ne s'étend pas sur la longueur de la projection dans le plan P des deux méplats, mais à sensiblement mi-longueur du corps de méplat. Il n'a ainsi pas besoin d'être pourvu de fenêtre de passage des saillies des branches convergentes puisqu'il reste interposé entre les parties de tête et la partie supérieure du corps de l'ancre. In the example shown in Figures 5 and 6, the plate or reinforcement 20 interposed between the two flats 12a, 12b does not extend over the length of the projection in the plane P of the two flats, but at substantially half length flat body. It does not need to be provided with a window for the protrusions of the converging branches since it remains interposed between the head parts and the upper part of the body of the anchor.
Les branches convergentes comportent des moyens de verrouillage directement l'une à l'autre, se présentant sous la forme de crans complémentaires 26 formés sur le bord transversal inférieur de ces branches. Idéalement, les deux méplats en regard portant les crans sont identiques. Les creux des crans d'une branche convergente permettent l'engagement des saillies des crans de l'autre branche convergente.  Converging branches comprise locking means directly to one another, being in the form of complementary notches 26 formed on the lower transverse edge of these branches. Ideally, the two flats facing the notches are identical. The hollows of the notches of a convergent branch allow the engagement of the projections of the notches of the other convergent branch.
Dans les deux modes de réalisation présentés, le renfort peut être fixé aux deux méplats, par des rivets au niveau de la tête de l'ancre et/ou du corps de l'ancre.  In both embodiments shown, the reinforcement can be attached to the two flats by rivets at the head of the anchor and / or the body of the anchor.
Le renfort central peut être prévu entre deux méplats à nervures constitutifs de l'ancre. The central reinforcement may be provided between two flats with constituent ribs of the anchor.
Plus précisément, conformément à la variante illustrée sur les figures 7 A et 7B, l'ancre peut comprendre deux nervures longitudinales 31 faisant saillie extérieurement des faces latérales extérieures 32 des deux méplats. Ces nervures longitudinales permettent de réaliser une ancre de relevage et de retournement efficace du fait de la masse plate de béton emprisonnée au dessus de la surface supérieure des nervures lorsque le panneau est relevé depuis une position horizontale jusqu'à une position verticale. Ces nervures externes peuvent être formées par renfoncement des méplats d'une ancre avec un poinçon d'une forme adapté à la forme de nervure désirée. En fonction de cette forme, il est possible d'obtenir le profil d'effort de relevage optimal. L'on pourra donc optimiser la forme de chaque nervure pour atteindre cet objectif. More precisely, according to the variant illustrated in FIGS. 7A and 7B, the anchor may comprise two longitudinal ribs 31 protruding externally outer side faces 32 of the two flats. These longitudinal ribs make it possible to achieve an effective lifting and turning anchor because of the flat mass of concrete trapped above the upper surface of the ribs when the panel is raised from a horizontal position to a vertical position. These external ribs may be formed by recessing the flats of an anchor with a punch of a shape adapted to the desired rib shape. Depending on this shape, it is possible to obtain the optimal lifting force profile. We can optimize the shape of each rib to achieve this goal.
Dans l'exemple illustré, l'ancre est formée par le jumelage de deux méplats formant ensemble un pied à branches divergentes 9a, 9b notamment à 45° et branches convergentes sous-jacentes 10a, 10b formant un angle d'environ 60°-70° avec les branches convergentes, des facettes d'adhésion intermédiaires 7a, 7b, 8a, 8b dont les facettes supérieures 7a, 7b font un angle β d'environ 15° avec le plan P, et les facettes inférieures 8a, 8b un angle γ d'environ 160° avec la facette supérieure correspondante. La nervure externe 31 s'étend dans cet exemple le long d'une portion inférieure de la facette supérieur 7a, 7b se prolonge sur la facette inférieure 8a, 8b jusqu'à proximité du commencement du pied (écart d'environ 1/10 de la longueur totale de l'ancre). Elle représente une largeur équivalent à environ un quart de la largeur d'un méplat, et la hauteur du bossage externe qu'elle forme est équivalente à l'épaisseur du méplat. In the illustrated example, the anchor is formed by the pairing of two flats forming together a foot diverging branches 9a, 9b in particular at 45 ° and subjacent converging branches 10a, 10b forming an angle of about 60 ° -70 With the convergent branches, intermediate adhesion facets 7a, 7b, 8a, 8b whose upper facets 7a, 7b make an angle β of about 15 ° with the plane P, and the lower facets 8a, 8b an angle γ about 160 ° with the corresponding upper facet. The outer rib 31 extends in this example along a lower portion of the upper facet 7a, 7b extends on the lower facet 8a, 8b to near the beginning of the foot (deviation of about 1/10 of the total length of the anchor). It represents a width equivalent to about a quarter of the width of a flat, and the height of the external boss that it forms is equivalent to the thickness of the flat.
Cette nervure présente dans l'exemple illustré, une forme générale oblongue. Elle pourra avantageusement présenter une forme sensiblement triangulaire. This rib presents in the illustrated example, a generally oblong shape. It may advantageously have a substantially triangular shape.
Bien entendu, d'autres profils de nervures peuvent être envisagés et d'autres implantations sur le méplat. Notamment, plusieurs nervures externes peuvent être prévues sur les faces externes des méplats, peuvent s'étendre sur une longueur plus ou moins importante, être plus ou moins inclinées par rapport à la ligne médiane de l'ancre, non rectiligne, brisées, interrompues... Egalement, une ancre à méplats jumelés pourra compter des méplats pourvus de nervures externes, et ne pas nécessairement être pourvue d'un méplat central. Of course, other rib profiles can be considered and other implementations on the flat. In particular, several external ribs may be provided on the outer faces of the flats, may extend over a greater or lesser length, be more or less inclined relative to the median line of the anchor, non-rectilinear, broken, interrupted. .. Also, an anchor with twin flats may have flats provided with external ribs, and not necessarily be provided with a central flat.
Par ailleurs, conformément aux figures 11 et 12, le renfort central 20 peut être solidarisé à l'un des deux méplats 12a au moyen d'une pliure de méplat 33 interposée conformément à la figure 12, entre deux portions de méplats dans le prolongement l'une de l'autre dans la configuration « à plat » ou « non encore mise en forme » de l'ancre et formant, lorsque l'ancre est mise en forme, le renfort central 20 et l'un des deux méplats 12a. Conformément à la figure 11, cette pliure 33 se retrouve à coïncider avec l'extrémité inférieure du pied de l'ancre lorsque mise en forme. Furthermore, in accordance with FIGS. 11 and 12, the central reinforcement 20 can be secured to one of the two flats 12a by means of a flat fold 33 interposed according to FIG. 12, between two portions of flats in the extension l one of the other in the configuration "flat" or "not yet shaped" of the anchor and forming, when the anchor is shaped, the central reinforcement 20 and one of the two flats 12a. According to Figure 11, this fold 33 is found to coincide with the lower end of the foot of the anchor when shaped.
En outre, le renfort 20 peut être solidarisé à l'autre méplat 12b au moyen d'une deuxième pliure 36 interposée conformément à la figure 12, entre deux portions de méplats côte à côte dans la configuration « à plat » de l'ancre et formant, lorsque l'ancre est mise en forme, le renfort central 20 et l'autre méplats 12b. Cette deuxième pliure 36 se retrouve à coïncider avec une portion latérale supérieure de l'ancre. In addition, the reinforcement 20 may be secured to the other flat 12b by means of a second fold 36 interposed according to FIG. 12, between two portions of flats side by side in the "flat" configuration of the anchor and forming, when the anchor is shaped, the central reinforcement 20 and the other flats 12b. This second fold 36 is found to coincide with an upper lateral portion of the anchor.
Conformément aux figures 8 à 9, lorsque l'ancre est dépourvue de renfort central, l'assemblage de deux méplats l'un à l'autre au moyen d'une pliure ou repli de méplat solidaire des deux méplats et formant une jonction entre ceux ci, peut être opéré à l'extrémité inférieure de l'ancre entre les deux branches convergentes de deux méplats constitutifs de l'ancre (figure 8) par la pliure 33, sur une portion latérale de la tête de l'ancre (figure 9) entre les deux bords latéraux des deux portions de tête des deux méplats jumelés par la pliure 36, ou à l'extrémité supérieure de l'ancre entre les deux bords supérieurs des deux portions de tête des deux méplats jumelés (figure 10) par la pliure 37. Le « patron » à partir duquel sont formées ces trois ancres comprend : figure 8 : deux portions de méplat dans le prolongement l'une de l'autre d'une longueur coïncidant avec la longueur déployée de chaque méplat mis en forme, ces deux portions de méplat étant séparées par une ligne à mi-longueur susceptible de former la pliure 33. Le méplat comprendra des lignes de pliage supplémentaires pour définir deux branches légèrement divergentes supérieures (par exemple à 15° vis à vis du plan P), deux branches convergentes supérieures rejoignant le plan P, et un caisson de rigidité avec des branches divergentes à 45° et des branches convergentes faisant un angle d'environ 80°. Idéalement, la longueur totale de cette ancre peut être comprise entre 100 et 400 mm, la largeur du méplat de 20, 25, 30, 40, 60 ou 80 mm, l'épaisseur du méplat comprise entre 3 et 8 mm According to Figures 8 to 9, when the anchor is devoid of central reinforcement, the assembly of two flats to one another by means of a fold or fold of flattened integral with the two flats and forming a junction between those ci, can be operated at the lower end of the anchor between the two converging branches of two constituent flats of the anchor (Figure 8) by the fold 33, on a lateral portion of the head of the anchor (Figure 9 ) between the two lateral edges of the two head portions of the two flats paired by the fold 36, or at the upper end of the anchor between the two upper edges of the two head portions of the two twin flats (Figure 10) by the fold 37. The "pattern" from which these three anchors are formed includes: FIG. 8: two flattened portions in the extension of one another of a length coinciding with the extended length of each flattened flat, these two flat portions being separated by a mid-length line capable of forming the bend 33. The flat part will comprise additional fold lines to define two slightly divergent upper limbs (for example at 15 ° with respect to the plane P), two converging upper branches joining the plane P, and a rigidity box with branches divergent at 45 ° and converging branches at an angle of about 80 °. Ideally, the total length of this anchor may be between 100 and 400 mm, the width of the flat of 20, 25, 30, 40, 60 or 80 mm, the thickness of the flat between 3 and 8 mm
figure 9 : deux portions de méplat côte à côte réunies par un pont de méplat d'une largeur de l'ordre de deux épaisseurs de méplat, la ligne médiane de ce pont de matière étant susceptible de former la pliure 36,  FIG. 9: two portions of flat surface side by side united by a flattened bridge of a width of the order of two thicknesses of flat, the median line of this bridge of material being capable of forming the fold,
figure 10 : deux portions de méplat dans le prolongement l'une de l'autre d'une longueur coïncidant avec la longueur déployée de chaque méplat mis en forme, ces deux portions de méplat étant séparées par une ligne à mi- longueur susceptible de former la pliure 37 et située au niveau d'un resserrement destiné à former le bord supérieur de l'ancre de moindre largeur que le reste de la tête et du corps de l'ancre.  FIG. 10 shows two flattened portions in the extension of one another of a length coinciding with the extended length of each flattened flat, these two flat portions being separated by a line at half length capable of forming the fold 37 and located at a constriction for forming the upper edge of the anchor of lesser width than the rest of the head and body of the anchor.
Comme il ressort de la description qui vient d'être faite et des figures, l'ancre selon l'invention présente des avantages majeurs par rapport aux ancres de l'état de la technique. As can be seen from the description which has just been given and from the figures, the anchor according to the invention has major advantages over the anchors of the state of the art.
Une ancre de ce type est réalisée par un procédé de fabrication simple et peu onéreux, basé sur le pliage d'un unique ou de deux méplats permet grâce au renfort de réaliser le levage d'éléments de construction relativement lourds. Bien entendu, les particularités des modes de réalisation, telles que la forme à section carrée, triangulaire ou en losange du caisson, l'inclinaison à 10, 20, ... 45[deg.] des branches inférieures divergentes, la présence ou l'absence de branche supérieures divergentes au sein du corps de l'ancre, leur nombre, peuvent être combinées les uns aux autres pour définir un ancrage optimal en fonction de l'élément de construction à lever. An anchor of this type is made by a simple and inexpensive manufacturing process, based on the folding of a single or two flats allows thanks to the reinforcement to achieve the lifting of relatively heavy construction elements. Of course, the particularities of the embodiments, such as the square, triangular or diamond shaped section of the box, the inclination at 10, 20, ... 45 [deg.] Of the divergent lower branches, the presence or the the absence of diverging upper branches within the body of the anchor, their number, can be combined with each other to define an optimal anchorage according to the building element to be lifted.
Egalement, un ou plusieurs renforts peuvent être interposés entre les méplats de l'ancre, ces renforts pouvant en outre présenter différentes formes en dehors des méplats. Also, one or more reinforcements may be interposed between the flats of the anchor, these reinforcements may also have different shapes outside the flats.

Claims

REVENDICATIONS
1. Ancre de levage d'un élément de construction, tel qu'un panneau de béton, comprenant une partie de tête susceptible d'être accrochée à un anneau de préhension, un pied et un corps interposé entre la tête et le pied, le corps et le pied étant destinés à être immergés dans le matériau constitutif de l'élément de construction, l'ancre étant obtenue par repliement d'au moins un méplat définissant différentes portions successives formant respectivement la tête, le corps et le pied de l'ancre, les portions constitutives du pied de l'ancre comprenant deux branches inférieures divergeant de part et d'autre du corps de l'ancre, et deux branches convergent l'une vers l'autre et s'étendant à partir des branches divergentes, caractérisée en ce qu'elle comprend une pièce de renfort (20) interposée entre les deux méplats ou parties de méplat, s'étendant depuis la tête de l'ancre sur au moins une partie du corps. 1. A lifting anchor of a construction element, such as a concrete board, comprising a head portion attachable to a grip ring, a foot and a body interposed between the head and the foot, the body and the foot being intended to be immersed in the material constituting the construction element, the anchor being obtained by folding at least one flat defining different successive portions forming respectively the head, the body and the foot of the anchor, the constituent portions of the foot of the anchor comprising two lower branches diverging on both sides of the body of the anchor, and two branches converge towards one another and extending from the divergent branches, characterized in that it comprises a reinforcing piece (20) interposed between the two flats or portions of flat, extending from the head of the anchor on at least a part of the body.
2. Ancre selon la revendication 1, caractérisée en ce que la pièce de renfort se présente sous la forme d'un méplat (20). 2. Anchor according to claim 1, characterized in that the reinforcing piece is in the form of a flat (20).
3. Ancre selon la revendication 2, caractérisée en ce que le méplat de renfort3. Anchor according to claim 2, characterized in that the flattened reinforcement
(20) s'étend jusqu'à mi-hauteur du corps de l'ancre. (20) extends to mid-height of the body of the anchor.
4. Ancre selon la revendication 1 ou 2, caractérisée en ce que le méplat de renfort (20) s'étend jusqu'aux extrémités inférieures des branches convergentes. 4. Anchor according to claim 1 or 2, characterized in that the reinforcing flat (20) extends to the lower ends of the converging branches.
5. Ancre selon l'une des revendications précédentes, caractérisée en ce qu'elle comprend des moyens de verrouillage (21, 22, 26) des branches convergentes l'une contre l'autre. 5. Anchor according to one of the preceding claims, characterized in that it comprises locking means (21, 22, 26) converging branches against each other.
6. Ancre selon la revendication 5, caractérisée en ce que les moyens de verrouillage (21, 22, 26) d'une branche convergente à l'autre comprennent au moins une saillie formée sur le bord libre inférieur de la branche convergente, et un logement d'accueil de cette saillie, ménagé dans l'épaisseur de la branche convergente opposée à partir de son bord libre inférieur, la saillie étant engagée dans le logement lorsque les parties de tête de méplat de l'ancre et du renfort interposé entre elles, sont plaquées les unes contre les autres. 6. Anchor according to claim 5, characterized in that the locking means (21, 22, 26) of a converging branch to the other comprise at least one projection formed on the lower free edge of the converging branch, and a receiving housing of this projection, formed in the thickness of the opposite converging branch from its lower free edge, the projection being engaged in the housing when the flat head portions of the anchor and the reinforcement interposed between them. , are pressed against each other.
7. Ancre selon la revendication 6, caractérisée en ce que les moyens de verrouillage (21, 22) comprennent une saillie unique décalée transversalement vis à vis du centre du bord libre de la branche convergente, et une découpe formant le logement d'accueil, les deux bords libres inférieurs des deux branches convergentes comportant chacun une saillie unique et une découpe. 7. Anchor according to claim 6, characterized in that the locking means (21, 22) comprise a single projection offset transversely with respect to the center of the free edge of the converging branch, and a cutout forming the receiving housing, the two lower free edges of the two converging branches each having a single projection and a cutout.
8. Ancre selon l'une des revendications 6, caractérisée en ce que les moyens de verrouillage (26) comprennent plusieurs saillies et plusieurs découpes, les saillies et les découpes s' alternant l'une l'autre le long du bord libre inférieur de la branche convergente, les deux bords libres inférieurs des deux branches convergentes comportant chacun plusieurs saillies et plusieurs découpes formant des crans. 8. Anchor according to one of claims 6, characterized in that the locking means (26) comprise a plurality of projections and a plurality of cutouts, the projections and the cuts being alternated with each other along the lower free edge of the converging branch, the two lower free edges of the two converging branches each having several projections and several cuts forming notches.
9. Ancre selon l'une des revendications 5 à 8, caractérisée en ce que le renfort comprend une fenêtre de passage (24) des moyens de verrouillage (21, 22, 26) réalisée dans son épaisseur. 9. Anchor according to one of claims 5 to 8, characterized in that the reinforcement comprises a passage window (24) of the locking means (21, 22, 26) made in its thickness.
10. Ancre selon l'une des revendications précédentes, caractérisée en ce qu'elle est formée de deux méplats identiques (12a, 12b) assemblés de part et d'autre du renfort (20). 10. Anchor according to one of the preceding claims, characterized in that it is formed of two identical flats (12a, 12b) assembled on either side of the reinforcement (20).
11. Ancre selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle comprend sur chacune des faces externes des deux méplats jumelés, au moins une nervures externe de relevage (31). 11. Anchor according to any one of the preceding claims, characterized in that it comprises on each of the outer faces of the two twinned flats, at least one external lifting ribs (31).
12. Ancre selon la revendication 11, caractérisée en ce que la nervure externe (31) s'étend suivant un axe longitudinal de l'ancre (A- A') ou suivant une direction inclinée par rapport à cet axe.  12. Anchor according to claim 11, characterized in that the outer rib (31) extends along a longitudinal axis of the anchor (A-A ') or in a direction inclined relative to this axis.
13. Ancre selon l'une quelconque des revendications précédentes, caractérisée en ce que les deux méplats jumelés (12a, 12b), et/ou au moins l'un des méplats (12a, 12b) et le renfort central (20) sont solidarisés l'un à l'autre par un pont de matière formé par une partie de méplat replié suivant une pliure (33, 36, 37).  13. Anchor according to any one of the preceding claims, characterized in that the two twin flats (12a, 12b), and / or at least one of the flats (12a, 12b) and the central reinforcement (20) are joined together to each other by a bridge of material formed by a portion of flat folded along a fold (33, 36, 37).
14. Ancre selon la revendication 13, caractérisée en ce que la pliure (33, 36, 37) s'étend suivant un bord latéral de la tête de l'ancre, ou un bord supérieur de la tête de l'ancre ou un bord inférieur du pied de l'ancre.  14. Anchor according to claim 13, characterized in that the fold (33, 36, 37) extends along a lateral edge of the head of the anchor, or an upper edge of the head of the anchor or an edge lower foot of the anchor.
PCT/FR2016/050181 2015-08-14 2016-01-28 Reinforced, dynamic lifting anchor for a structural member WO2017029439A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU2016308573A AU2016308573A1 (en) 2015-08-14 2016-01-28 Reinforced, dynamic lifting anchor for a structural member
CN201680048036.4A CN108474214A (en) 2015-08-14 2016-01-28 Reinforced dynamic for structural elements promotes anchor
US15/752,406 US20190003192A1 (en) 2015-08-14 2016-01-28 Reinforced, dynamic lifting anchor for a structural member
EP16707849.2A EP3334874A1 (en) 2015-08-14 2016-01-28 Reinforced, dynamic lifting anchor for a structural member

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1557735A FR3040053A1 (en) 2015-08-14 2015-08-14 DYNAMIC ANCHOR FOR LIFTING A BUILDING ELEMENT, REINFORCED
FR1557735 2015-08-14

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EP (1) EP3334874A1 (en)
CN (1) CN108474214A (en)
AU (1) AU2016308573A1 (en)
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WO (1) WO2017029439A1 (en)

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EP3507431A1 (en) * 2016-09-02 2019-07-10 Marcel Arteon Reinforced dynamic lifting anchor for lifting, turning over a building element.
NO20181193A1 (en) * 2018-09-12 2020-03-13 Hmr Hydeq As An aluminium production anode yoke, an anode hanger, and a carbon anode

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US10968645B2 (en) * 2018-03-20 2021-04-06 Meadow Burke, Llc Anchor and clutch assembly

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EP0908583A1 (en) * 1997-10-07 1999-04-14 Wakai & Co., Ltd. Method of moving heavy materials
DE20115328U1 (en) * 2001-09-17 2001-12-06 Fixinox Ges Zur Entwicklung Ra Transport element for embedding in components, especially in aerated concrete parts
WO2008078008A1 (en) * 2006-12-22 2008-07-03 Marcel Arteon Anchor for handling building elements, in particular a concrete panel
WO2015006825A1 (en) * 2013-07-19 2015-01-22 Casne Verige Pty Ltd Concrete lifting anchor

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EP0908583A1 (en) * 1997-10-07 1999-04-14 Wakai & Co., Ltd. Method of moving heavy materials
DE20115328U1 (en) * 2001-09-17 2001-12-06 Fixinox Ges Zur Entwicklung Ra Transport element for embedding in components, especially in aerated concrete parts
WO2008078008A1 (en) * 2006-12-22 2008-07-03 Marcel Arteon Anchor for handling building elements, in particular a concrete panel
WO2015006825A1 (en) * 2013-07-19 2015-01-22 Casne Verige Pty Ltd Concrete lifting anchor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3507431A1 (en) * 2016-09-02 2019-07-10 Marcel Arteon Reinforced dynamic lifting anchor for lifting, turning over a building element.
JP2019526730A (en) * 2016-09-02 2019-09-19 アルテオン，マルセル Reinforced dynamic anchor for lifting, tilting up and rotating building components
NO20181193A1 (en) * 2018-09-12 2020-03-13 Hmr Hydeq As An aluminium production anode yoke, an anode hanger, and a carbon anode
NO345291B1 (en) * 2018-09-12 2020-11-30 Hmr Hydeq As An aluminium production anode yoke, an anode hanger, and a carbon anode

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AU2016308573A1 (en) 2018-03-08
EP3334874A1 (en) 2018-06-20
US20190003192A1 (en) 2019-01-03
CN108474214A (en) 2018-08-31
FR3040053A1 (en) 2017-02-17

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