EP3507431A1 - Reinforced dynamic lifting anchor for lifting, turning over a building element. - Google Patents

Reinforced dynamic lifting anchor for lifting, turning over a building element.

Info

Publication number
EP3507431A1
EP3507431A1 EP16778080.8A EP16778080A EP3507431A1 EP 3507431 A1 EP3507431 A1 EP 3507431A1 EP 16778080 A EP16778080 A EP 16778080A EP 3507431 A1 EP3507431 A1 EP 3507431A1
Authority
EP
European Patent Office
Prior art keywords
anchor
foot
head
sub
branches
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP16778080.8A
Other languages
German (de)
French (fr)
Inventor
Marcel Arteon
Patrick Lapoule
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP3507431A1 publication Critical patent/EP3507431A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/62—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled
    • B66C1/66—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof
    • 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

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 constituent material of the construction element, the anchor extending along a main plane along a longitudinal axis and comprising at least two sub parties, each defining different successive portions respectively forming the head, the body and the foot of the anchor.
  • the anchor comprises at least one reinforcing piece interposed between the two sub-parts, extending from the head of the anchor on at least a part of the foot.
  • the invention may furthermore exhibit one or both of the following aspects:
  • the anchor is obtained by folding a single flat comprising at least two sub-parts of the anchor continuously bonded.
  • the anchor is composed of at least two separate sub-parts, each being obtained by folding at least one flat part.
  • the reinforcement piece is an independent piece interposed on the anchor.
  • the reinforcing piece is a piece connected with the anchor continuously, obtained by folding a flat containing at least a sub-part 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 towards one another and extending from diverging branches.
  • the anchor comprises locking means (21, 22, 26) 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 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 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 converging branch, and a cutout forming the receiving housing, the two lower free edges; two converging branches each having a single projection and a cutout.
  • 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 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 sub-parts, at least one external lifting ribs.
  • the outer rib extends along a longitudinal axis of the anchor or in a direction inclined relative to this axis.
  • the two sub-parts and / or at least one of the sub-parts and the central reinforcement are secured to one another by a material bridge formed by a portion of flat folded along a fold.
  • the fold 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 anchor comprises at least one lateral return (16a, 16b) along the body, extending in a plane outside the main plane of the body.
  • the lateral return is with a delta shape starting from the head.
  • 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).
  • FIGS. 5 and 6 are a perspective view of an anchor according to a third embodiment of the invention, not assembled (FIG. 5) and assembled (FIG. 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,
  • FIG. 12 schematically represents flatly the various flats constituting the anchor of FIG. 11 and their junctions in pairs
  • FIGS. 13A and 13A respectively represent a flat and an anchor made by a lateral folding from this flat
  • FIGS. 13B and 13B 'respectively represent a flat and an anchor with an interposed reinforcement made by a lateral folding from this flat
  • FIG. 13C diagrammatically represents a flat surface for making an anchor that can be used as a reinforcement
  • FIGS. 13C and 13D show two alternative embodiments of an anchor that can be used as a reinforcement with the different length of the foot
  • FIGS. 14A, 14B, 14C, 14 'and 14 " are perspective views of the embodiments of an anchor by longitudinal folding
  • FIGS. 15A, 15A ', 15A ", 15B and 15C show perspective views of the variants of an anchor by a series of lateral and longitudinal folds
  • FIGS. 16, 16A and 16B show, in perspective views, the variant shapes of the body of the anchor
  • Figures 17, 17A-C and 18, 18A-C are perspective views of the anchor assembly variants with reinforcement and platinum.
  • 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,
  • 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, allow maintain fixed the inclination of divergent branches relative to the longitudinal plane P of the flat during lifting of 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 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. 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.
  • 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 outwardly from the outer lateral 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.
  • other rib profiles can be considered and other implementations on the flat.
  • 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. ..
  • 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 twinned 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 twinned flats (FIG. 10) by the fold 37.
  • the "pattern" from which these three anchors are formed comprises: FIG.
  • the flat part will comprise lines of additional folding 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 diverging at 45 ° and converging branches making a 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.
  • one or more reinforcements may be interposed between the flats of the anchor, these reinforcements may also have different shapes outside the flats.
  • the anchors are made by folding. This technique simplifies manufacturing and especially eliminates the problems of assemblies.
  • the anchor extends along a main plane along a longitudinal axis X (as shown in Figures 13 to 18), that is to say, there are successively the portions forming the head, the body and the foot extending along the longitudinal axis X.
  • each portion may have branches deviating from the longitudinal axis X.
  • the foot portion may be constituted by the two divergent branches and converging forming a rhombus and away from the main plane of the longitudinal axis X. It is also possible to have the foot portion constituted only by two divergent branches.
  • the anchor is made by a lateral folding of a single piece of flat.
  • Figure 13A illustrates a flat, on which are formed two subparts of the anchor, each having the portion of the head, body and foot. Between the two subparts of the anchor, a lateral fold is provided along the longitudinal axis X. When a lateral folding method is applied, the two sub-parts are laterally supported, so that they overlap as indicated by the double semicircle arrows in Figure 13 A '. In Figure 13A of the flat, two folds in feet are also provided to form the two divergent and converging branches of the foot portion. Figure 13A 'illustrates an anchor thus formed with a layer of thickness. In addition to this achievement with only two subparts of the anchor, it is possible to realize an anchor with multiple subparts ((3, 4, 5 ...) on a single flat. a process composed of several successive lateral folds, an anchor with several layers of thickness is obtained.
  • Figure 13B illustrates a flat, on which are formed two subparts of the anchor and a reinforcement.
  • the two subparts of the anchor are the same as those shown in Fig. 13A and 13A '.
  • the reinforcement mainly has the head and the body, optionally the foot. Between one of the subparts of the anchor and the reinforcement, a lateral fold is provided along the longitudinal axis X.
  • the lateral folding method is applicable in two ways in order to obtain the reinforcement placed either inside or outside the anchor. In the first way, the reinforcement is pressed laterally to the side sub-section as indicated by the double semicircle arrows in Figure 13B.
  • Figures 13C and 13D are the variants of the anchor of those shown in Figures 13A and B. There is provided a double side fold which can define a varied distance between the two subparts of the anchor. After the lateral folding process, the anchor may also be used as a reinforcement superimposed over another anchor as shown in Figure 13C. In accordance with the length of the foot, the anchor may have two diverging lower branches as in Figure 13C or also two converging branches extending from the diverging branches as in Figure 13D.
  • the anchor is made by a longitudinal folding of a single flat.
  • a longitudinal folding process is applied, the two sub-portions are supported longitudinally.
  • Figure 14A shows an anchor formed by a longitudinal folding of the two sub-parts along a fold along the lateral axis Y at the foot position. It is also possible to make an anchor formed by a longitudinal folding at the position of the head. Apart from this embodiment with only two subparts of the anchor, it is possible to make an anchor with multiple sub-parts (3, 4, 5 ...) on a flat. After the realization of a process composed of several successive longitudinal folds, an anchor with several layers of thickness is obtained.
  • FIG. 14A ' shows an anchor formed by a longitudinal folding at the position of the head and two longitudinal folds at the ends of divergent branches of the foot portion.
  • Figure 14A shows an anchor formed by longitudinal folding at the position of the head, with two reinforcements - each being superimposed on the outside of a diverging branch of the foot portion by a longitudinal fold.
  • an independent reinforcement As illustrated in FIG. 14B, an inverted Y-shaped independent reinforcement is inserted between the two anchor sub-parts. As illustrated in FIG. 14C, a perfectly straight independent reinforcement is inserted between the two anchor sub-parts. It is also possible to overlay a reinforcement shown in Figure 13C above the anchor shown in Figure 14A.
  • the anchor is made by a series of lateral and longitudinal folds of a single flat.
  • Fig. 15A shows an embodiment of an anchor with four sub-portions formed by a longitudinal fold and two lateral folds.
  • the two lateral folds give two lateral folds in the X direction, each of the two folds connecting two subparts of the anchor. While the longitudinal fold gives a fold in the head in the direction Y, which connects the four subparts of the anchor.
  • Fig. 15A shows another embodiment of an anchor with four sub-portions formed by lateral folding and two longitudinal folds.
  • the two longitudinal folds give two folds at the ends of the diverging branches of the foot portion in the Y direction, each of the two folds connecting two subparts of the anchor. While the lateral folding gives a lateral fold in the X direction, which connects the four subparts of the anchor.
  • FIG. 15A An example is shown in FIG. 15A ", in which the anchor is formed by a lateral folding in the X direction.
  • the two reinforcements are at the outside of the two diverging branches of the foot portion, formed by two longitudinal folds.
  • FIG. 15B shows an anchor with reinforcement formed by a first lateral folding along a fold II along the longitudinal axis X and a second longitudinal folding along another fold II-II along the lateral axis Y.
  • first lateral folding an inverted Y-shaped reinforcement is placed side-by-side with a sub-part of the anchor, while by the second longitudinal folding, the other sub-part of the anchor is interposed on the other side of the reinforcement.
  • FIG. 15C shows an anchor with reinforcement formed by two lateral folds along the longitudinal axis X and a longitudinal folding along the lateral axis Y.
  • each reinforcement is placed next to a sub-portion of the anchor, while by the longitudinal folding, the two anchor sub-parts block the two reinforcements in the middle.
  • Figure 16 shows a shape variation of the body of the anchor, which includes two lateral returns (16a, 16b) along the body.
  • a part of the body can deviate from the main plane to form the wings.
  • the wings allow to distribute the load over the entire length of the anchor, for example with a delta shape starting from the head.
  • the wings usually extend in a plane outside the main plane of the body.
  • This anchor can be used also as a reinforcement.
  • the anchor with the delta-shaped wings is superimposed on an anchor shown in FIG. 14A.
  • the notch is introduced on the foot of the anchor to receive the insertion of the reinforcement pin. It is also possible to keep a foot portion of the reinforcement as shown in Figure 16B.
  • the reinforcement is superimposed on the anchor, the diverging foot portion of the reinforcement is superimposed on the two diverging legs of the anchor.
  • the anchor is made by a lateral folding of a single flat.
  • Figure 17A shows an anchor formed by a lateral folding of the two sub-parts along a fold along the longitudinal axis X. It is possible to provide a certain space between the two sub-parts.
  • Figure 17B shows a roof-shaped plate, which follows the angle of the two divergent branches of the foot portion of the anchor. In the upper part of the roof, there is an opening in the form of a slot.
  • Figure 17C shows an inverted Y-shaped reinforcement. The arrows between FIGS. 17B and C show the insertion direction of the reinforcement, crossing the slit of the plate, in the space between the two sub-parts of the anchor.
  • Figure 17 shows the assembly of the three parts.
  • the anchor is made by a longitudinal folding of a single flat.
  • Figure 18A shows an anchor formed by a longitudinal folding of the two sub-parts along a fold along the lateral axis Y. It is possible to provide a certain space between the two sub-parts.
  • Figure 18B shows a plate identical to that described in Figure 17B.
  • Figure 18C shows an inverted Y-shaped reinforcement identical to that described in Figure 17C. The arrows between FIGS. 18B and C show the insertion direction of the reinforcement, crossing the slot of platinum, in the space between the two subparts of the anchor.
  • Figure 18 shows the assembly of the three parts.
  • the particularities of the embodiments such as the number of folds in the X or Y direction, the number of subparts of the anchor, the folding sequence, the different thicknesses, the different means for the reinforcement and the joining can vary and can be combined with each other to define an optimal dynamic anchor according to the construction element.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)

Abstract

The invention relates to a lifting anchor for lifting a building element, such as a concrete panel, comprising a head part that can be attached to a lifting 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 of which the building element is made, the anchor extending in a main plane along a longitudinal axis and comprising at least two sub-parts, each one defining various successive portions respectively forming the head, the body and the foot of the anchor. According to the invention, the anchor comprises at least one reinforcing piece (20) interposed between the two flats or flat parts, extending from the head of the anchor over at least part of the foot.

Description

ANCRE DYNAMIQUE RENFORCEE DE LEVAGE, DE RELEVAGE, DE RETOURNEMENT D'UN ELEMENT DE CONSTRUCTION  DYNAMIC ANCHOR REINFORCED LIFTING, LIFT, RETURN OF A BUILDING ELEMENT
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 s'étendant suivant un plan principal le long d'un axe longitudinal et comprenant au moins deux sous-parties, chacune définissant différentes portions successives formant respectivement la tête, le corps et le pied de l'ancre. 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 constituent material of the construction element, the anchor extending along a main plane along a longitudinal axis and comprising at least two sub parties, each defining different successive portions respectively forming the head, the body and the foot of the anchor.
Selon l'invention, l'ancre comprend au moins une pièce de renfort interposée entre les deux sous-parties, s'étendant depuis la tête de l'ancre sur au moins une partie du pied.  According to the invention, the anchor comprises at least one reinforcing piece interposed between the two sub-parts, extending from the head of the anchor on at least a part of the foot.
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:
- l'ancre est obtenue par repliement d'un seul méplat comprenant au moins deux sous-parties de l'ancre liées de façon continue. - The anchor is obtained by folding a single flat comprising at least two sub-parts of the anchor continuously bonded.
- l'ancre est composée par au moins deux sous-parties séparées, chacune étant obtenue par repliement d'au moins un méplat.  the anchor is composed of at least two separate sub-parts, each being obtained by folding at least one flat part.
- la pièce de renfort est une pièce indépendante interposée sur l'ancre.  - The reinforcement piece is an independent piece interposed on the anchor.
- la pièce de renfort est une pièce liée avec l'ancre de façon continue, obtenue par repliement d'un méplat contenant au moins une sous-partie de l'ancre. - The reinforcing piece is a piece connected with the anchor continuously, obtained by folding a flat containing at least a sub-part of the anchor.
- 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.- 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 towards one another and extending from diverging branches.
- L'ancre comprend des moyens de verrouillage (21, 22, 26) des branches convergentes l'une contre l'autre. - The anchor comprises locking means (21, 22, 26) 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 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.  - 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 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 therebetween, are pressed against each other.
- les moyens de verrouillage 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. the locking means 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; two converging branches each having a single projection and a cutout.
- 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.
- 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 sous-parties, au moins une nervures externe de relevage.  - The anchor comprises on each of the outer faces of the two sub-parts, at least one external lifting ribs.
- la nervure externe s'étend suivant un axe longitudinal de l'ancre ou suivant une direction inclinée par rapport à cet axe.  - The outer rib extends along a longitudinal axis of the anchor or in a direction inclined relative to this axis.
- les deux sous-parties et/ou au moins l'un des sous-parties et le renfort central sont solidarisés l'un à l'autre par un pont de matière formé par une partie de méplat replié suivant une pliure.  - The two sub-parts and / or at least one of the sub-parts and the central reinforcement are secured to one another by a material bridge formed by a portion of flat folded along a fold.
- la pliure 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.  the fold 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.
- L'ancre comprend au moins un retour latéral (16a, 16b) le long du corps, s'étendant suivant un plan en dehors du plan principal du corps.  - The anchor comprises at least one lateral return (16a, 16b) along the body, extending in a plane outside the main plane of the body.
- le retour latéral est avec une forme delta partant de la tête.  - The lateral return is with a delta shape starting from the head.
L'invention sera maintenant décrite en référence aux figures annexées représentant schématiquement différents modes de réalisation de l'invention et parmi lesquelles :  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) 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. 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).
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) FIGS. 5 and 6 are a perspective view of an anchor according to a third embodiment of the invention, not assembled (FIG. 5) and assembled (FIG. 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, FIG. 12 schematically represents flatly the various flats constituting the anchor of FIG. 11 and their junctions in pairs,
les figures 13A et 13A' représentent respectivement un méplat et une ancre réalisée par un repliement latéral à partir de ce méplat, FIGS. 13A and 13A 'respectively represent a flat and an anchor made by a lateral folding from this flat,
les figures 13B et 13B' représentent respectivement un méplat et une ancre avec un renfort interposé réalisée par un repliement latéral à partir de ce méplat, FIGS. 13B and 13B 'respectively represent a flat and an anchor with an interposed reinforcement made by a lateral folding from this flat,
la figure 13C représente schématiquement à plat un méplat pour faire une ancre utilisable comme un renfort, FIG. 13C diagrammatically represents a flat surface for making an anchor that can be used as a reinforcement,
les figures 13C et 13D représentent deux variantes de réalisation d'une ancre utilisable comme un renfort avec la longueur du pied différente, FIGS. 13C and 13D show two alternative embodiments of an anchor that can be used as a reinforcement with the different length of the foot,
les figures 14A, 14B, 14C, 14' et 14" représentent par des vues en perspective les variantes de réalisation d'une ancre par un repliement longitudinal, les figures 15A, 15A', 15A", 15B et 15C représentent par des vues en perspective les variantes de réalisation d'une ancre par une série de repliements latéraux et longitudinaux, FIGS. 14A, 14B, 14C, 14 'and 14 "are perspective views of the embodiments of an anchor by longitudinal folding, FIGS. 15A, 15A ', 15A ", 15B and 15C show perspective views of the variants of an anchor by a series of lateral and longitudinal folds,
les figures 16, 16 A et 16B représentent par des vues en perspective les variantes de forme du corps de l'ancre,  FIGS. 16, 16A and 16B show, in perspective views, the variant shapes of the body of the anchor,
les figures 17, 17A-C et 18, 18A-C représentent par des vues en perspective les variantes d'assemblage d'ancre avec renfort et platine.  Figures 17, 17A-C and 18, 18A-C are perspective views of the anchor assembly variants with reinforcement and platinum.
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, The anchor according to FIG. 3 is made from two identical flats 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) : 12b, that is to say two rigid strips for example of metal whose thickness is small relative to the width, which are each folded along four fold lines C, D, A, B to successively define for the flat part considered in accordance with Figure 1 (the references associated with the letter "a" refer to the flat portion 12a, the references associated with the letter "b" refer to the flat portion 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 - 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 vertical head portion 6a and pressed against the head portion 6b of the other flat, extending along a plane P 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°,  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 °,
- 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 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, allow maintain fixed the inclination of divergent branches relative to the longitudinal plane P of the flat during lifting of 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.  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.
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.  According to a particular embodiment, the reinforcing piece is in the form of a plate 13 preferably having a length and 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. 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 . 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. 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.
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.  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. Le renfort central peut être prévu entre deux méplats à nervures constitutifs 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. 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 outwardly from the outer lateral 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. 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... This rib presents in the illustrated example, a generally oblong shape. It may advantageously have a substantially triangular shape. 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. ..
Egalement, une ancre à méplats jumelés pourra compter des méplats pourvus de nervures externes, et ne pas nécessairement être pourvue d'un méplat central. 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 twinned 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 twinned flats (FIG. 10) by the fold 37. The "pattern" from which these three anchors are formed comprises: FIG. 8: two flattened portions in the extension one of the other of a length coinciding with the extended length of each flattened flat, these two flat portions being separated by a line at mid-length capable of forming the fold 33. The flat part will comprise lines of additional folding 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 diverging at 45 ° and converging branches making a 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. 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. 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. 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.
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.  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.
Les ancres fabriquées par repliement  Anchors made by folding
Dans un mode de réalisation, les ancres sont fabriquées par repliement. Cette technique permet de simplifier la fabrication et surtout d'éliminer les problèmes des assemblages. Les ancres à méplats indépendantes obligent à les assembler par des moyens de soudure, de rivet et de collage, qui conduisent aux problèmes d'alignement des trous décalés et aux problèmes des ancres pas jointives.  In one embodiment, the anchors are made by folding. This technique simplifies manufacturing and especially eliminates the problems of assemblies. The anchors with independent flats force to assemble them by means of welding, riveting and gluing, which lead to the problems of alignment of the offset holes and the problems of the not joined anchors.
Ce nouveau concept d'ancrage, par des repliements successifs d'épaisseurs d'acier plus faibles, permet d'obtenir économiquement des ancres de plus fortes puissances. This new concept of anchoring, by successive folds of lower steel thicknesses, makes it possible to economically obtain anchors of higher power.
L'ancre s'étend suivant un plan principal le long d'un axe longitudinal X (comme présenté dans les figures du 13 au 18), c'est-à-dire, on trouve successivement les portions formant la tête, le corps et le pied s'étendant selon l'axe longitudinal X. Néanmoins, les réalisations variées de chaque portion peuvent avoir des branches s'écartant de l'axe longitudinal X. Par exemple, la portion de pied peut être constituée par les deux branches divergentes et convergentes formant un losange et s'écartant du plan principal de l'axe longitudinal X. Il est également possible d'avoir la portion de pied constituée seulement par deux branches divergentes. The anchor extends along a main plane along a longitudinal axis X (as shown in Figures 13 to 18), that is to say, there are successively the portions forming the head, the body and the foot extending along the longitudinal axis X. Nevertheless, the various embodiments of each portion may have branches deviating from the longitudinal axis X. For example, the foot portion may be constituted by the two divergent branches and converging forming a rhombus and away from the main plane of the longitudinal axis X. It is also possible to have the foot portion constituted only by two divergent branches.
Dans une première catégorie, l'ancre est réalisée par un repliement latéral d'une seule pièce de méplat. In a first category, the anchor is made by a lateral folding of a single piece of flat.
La figure 13A illustre un méplat, sur lequel sont formées deux sous-parties de l'ancre, chacune présentant la portion de la tête, du corps et du pied. Entre les deux sous-parties de l'ancre, un pli latéral est prévu le long de l'axe longitudinal X. Lorsqu'on applique un procédé de repliement latéral, on appuie latéralement sur les deux sous-parties, afin qu'elles se superposent comme indiqué par les double flèches de demi-cercle dans la figure 13 A'. Dans la figure 13 A du méplat, deux plis en pieds sont également prévus afin de former les deux branches divergentes et convergentes de la portion de pied. La figure 13A' illustre une ancre ainsi formée avec une couche d'épaisseur. En plus de cette réalisation avec seulement deux sous-parties de l'ancre, il est possible de réaliser une ancre avec multiples de sous-parties ((3, 4, 5...) sur un seul méplat. Après la réalisation d'un procédé composé de plusieurs repliements latéraux successifs, une ancre avec plusieurs couches d'épaisseur est obtenue. Figure 13A illustrates a flat, on which are formed two subparts of the anchor, each having the portion of the head, body and foot. Between the two subparts of the anchor, a lateral fold is provided along the longitudinal axis X. When a lateral folding method is applied, the two sub-parts are laterally supported, so that they overlap as indicated by the double semicircle arrows in Figure 13 A '. In Figure 13A of the flat, two folds in feet are also provided to form the two divergent and converging branches of the foot portion. Figure 13A 'illustrates an anchor thus formed with a layer of thickness. In addition to this achievement with only two subparts of the anchor, it is possible to realize an anchor with multiple subparts ((3, 4, 5 ...) on a single flat. a process composed of several successive lateral folds, an anchor with several layers of thickness is obtained.
La figure 13B illustre un méplat, sur lequel sont formées deux sous-parties de l'ancre et un renfort. Les deux sous-parties de l'ancre sont les mêmes que celles présentées dans la figure 13 A et 13 A'. Le renfort possède principalement la tête et le corps, optionnellement le pied. Entre une des sous-parties de l'ancre et le renfort, un pli latéral est prévu selon l'axe longitudinal X. Le procédé de repliement latéral est applicable de deux façons afin d'obtenir le renfort posé soit intérieur soit extérieur de l'ancre. Dans la première façon, on appuie latéralement sur le renfort vers la sous- parties à côté comme indiqué par les double flèches de demi-cercle dans la figure 13B. Ensuite, on appuie latéralement sur l'autre sous-partie afin de superposer cette sous-artie au-dessus du renfort afin de réaliser une ancre avec un renfort interposé entre les deux sous-parties comme indiqué dans la figure 13B'. Le pied du renfort peut s'étendre de manière droite ou incliné suivants l'angle d'une des branches divergentes. Selon la deuxième façon, on appuie d'abord latéralement sur les deux sous-parties pour former une ancre. Ensuite, on appuie latéralement sur le renfort à superposer au-dessus d'une sous-partie. Le pied du renfort est superposé sur une des branches divergentes. Il est possible de prévoir plusieurs renforts sur un méplat afin d'augmenter la rigidité. Il est également possible de prévoir une pluralité de renforts et une pluralité de sous-parties de l'ancre sur un seul méplat. Par une série de procédés de repliement latéral, une ancre renforcée avec plusieurs renforts et une pluralité de sous-parties sont réalisées. Figure 13B illustrates a flat, on which are formed two subparts of the anchor and a reinforcement. The two subparts of the anchor are the same as those shown in Fig. 13A and 13A '. The reinforcement mainly has the head and the body, optionally the foot. Between one of the subparts of the anchor and the reinforcement, a lateral fold is provided along the longitudinal axis X. The lateral folding method is applicable in two ways in order to obtain the reinforcement placed either inside or outside the anchor. In the first way, the reinforcement is pressed laterally to the side sub-section as indicated by the double semicircle arrows in Figure 13B. Then, one presses laterally on the other subpart to superpose this sub-part above the reinforcement to achieve an anchor with a reinforcement interposed between the two sub-parts as shown in Figure 13B '. The foot of the reinforcement can extend straight or inclined following the angle of one of the branches divergent. In the second way, the two subparts are first laterally supported to form an anchor. Then, one presses laterally on the reinforcement to be superimposed over a sub-part. The foot of the reinforcement is superimposed on one of the diverging branches. It is possible to provide several reinforcements on a flat in order to increase the rigidity. It is also possible to provide a plurality of reinforcements and a plurality of sub-parts of the anchor on a single flat. By a series of lateral folding methods, a reinforced anchor with a plurality of reinforcements and a plurality of subparts are made.
Les figures 13C et 13D sont les variantes de l'ancre de celles présentées dans les figures 13 A et B. Il est prévu un double pli latéral qui peut définir une distance variée entre les deux sous-parties de l'ancre. Après le procédé de repliement latéral, l'ancre peut être utilisé également comme un renfort superposé au-dessus d'une autre ancre comme indiqué dans la figure 13C Conformément à la longueur du pied, l'ancre peut avoir deux branches inférieures divergentes comme dans la figure 13C ou également deux branches convergentes s'étendant à partir des branches divergentes comme dans la figure 13D. Figures 13C and 13D are the variants of the anchor of those shown in Figures 13A and B. There is provided a double side fold which can define a varied distance between the two subparts of the anchor. After the lateral folding process, the anchor may also be used as a reinforcement superimposed over another anchor as shown in Figure 13C. In accordance with the length of the foot, the anchor may have two diverging lower branches as in Figure 13C or also two converging branches extending from the diverging branches as in Figure 13D.
Dans une deuxième catégorie, l'ancre est réalisée par un repliement longitudinal d'un seul méplat. Lorsque on applique un procédé de repliement longitudinal, on appuie longitudinalement sur les deux sous-parties. In a second category, the anchor is made by a longitudinal folding of a single flat. When a longitudinal folding process is applied, the two sub-portions are supported longitudinally.
La figure 14A présente une ancre formée par un repliement longitudinal des deux sous-parties le long d'un pli selon l'axe latéral Y à la position de pied. Il est également possible de réaliser une ancre formée par un repliement longitudinal à la position de la tête. Hormis cette réalisation avec seulement deux sous-parties de l'ancre, il est possible de réaliser une ancre avec de multiples sous-parties (3, 4, 5...) sur un méplat. Après la réalisation d'un procédé composé de plusieurs repliements longitudinaux successifs, une ancre avec plusieurs couches d'épaisseur est obtenue. La figure 14A' présente une ancre formée par un repliement longitudinal à la position de la tête et deux repliements longitudinaux aux extrémités des branches divergentes de la portion de pied. Figure 14A shows an anchor formed by a longitudinal folding of the two sub-parts along a fold along the lateral axis Y at the foot position. It is also possible to make an anchor formed by a longitudinal folding at the position of the head. Apart from this embodiment with only two subparts of the anchor, it is possible to make an anchor with multiple sub-parts (3, 4, 5 ...) on a flat. After the realization of a process composed of several successive longitudinal folds, an anchor with several layers of thickness is obtained. FIG. 14A 'shows an anchor formed by a longitudinal folding at the position of the head and two longitudinal folds at the ends of divergent branches of the foot portion.
Il est également possible de former une ancre avec un ou plusieurs renforts par une série de repliements longitudinaux à partir d'un seul méplat. La figure 14A" présente une ancre formée par un repliement longitudinal à la position de la tête, avec deux renforts - chacun étant superposé à l'extérieur d'une branche divergente de la portion de pied par un pli longitudinal. It is also possible to form an anchor with one or more reinforcements by a series of longitudinal folds from a single flat. Figure 14A "shows an anchor formed by longitudinal folding at the position of the head, with two reinforcements - each being superimposed on the outside of a diverging branch of the foot portion by a longitudinal fold.
Par ailleurs, à partir de l'ancre présentée dans la figure 14 A, il existe plusieurs possibilités d'intégrer un renfort indépendant. Comme illustré dans la figure 14B, un renfort indépendant en forme Y inversé est inséré entre les deux sous-parties d'ancre. Comme illustré dans la figure 14C, un renfort indépendant en forme parfaitement droite est inséré entre les deux sous-parties d'ancre. Il est également possible de superposer un renfort indiqué dans la figure 13C au-dessus de l'ancre indiquée dans la figure 14A. Moreover, from the anchor shown in FIG. 14A, there are several possibilities of integrating an independent reinforcement. As illustrated in FIG. 14B, an inverted Y-shaped independent reinforcement is inserted between the two anchor sub-parts. As illustrated in FIG. 14C, a perfectly straight independent reinforcement is inserted between the two anchor sub-parts. It is also possible to overlay a reinforcement shown in Figure 13C above the anchor shown in Figure 14A.
Dans une troisième catégorie, l'ancre est réalisée par une série de repliements latéraux et longitudinaux d'un seul méplat. In a third category, the anchor is made by a series of lateral and longitudinal folds of a single flat.
La figure 15A présente un mode de réalisation d'une ancre avec quatre sous- parties formée par un repliement longitudinal et deux repliements latéraux. Les deux repliements latéraux donnent deux plis latéraux selon la direction X, chacun des deux plis reliant deux sous-parties de l'ancre. Tandis que le repliement longitudinal donne un pli en tête selon la direction Y, qui relie les quatre sous-parties de l'ancre. Fig. 15A shows an embodiment of an anchor with four sub-portions formed by a longitudinal fold and two lateral folds. The two lateral folds give two lateral folds in the X direction, each of the two folds connecting two subparts of the anchor. While the longitudinal fold gives a fold in the head in the direction Y, which connects the four subparts of the anchor.
La figure 15A' présente un autre mode de réalisation d'une ancre avec quatre sous-parties formée par un repliement latéral et deux repliements longitudinaux. Les deux repliements longitudinaux donnent deux plis aux extrémités des branches divergentes de la portion de pied selon la direction Y, chacun des deux plis reliant deux sous-parties de l'ancre. Tandis que le repliement latéral donne un pli latéral selon la direction X, qui relie les quatre sous-parties de l'ancre. Par une série de repliements latéraux et longitudinaux d'un seul méplat, il est également possible de former une ancre avec renfort. Une exemple est présente dans la figure 15A", dans laquelle l'ancre est formée par un repliement latéral selon la direction X. Les deux renforts sont à extérieurs des deux branches divergentes de la portion de pied, formés par deux repliements longitudinaux. Fig. 15A 'shows another embodiment of an anchor with four sub-portions formed by lateral folding and two longitudinal folds. The two longitudinal folds give two folds at the ends of the diverging branches of the foot portion in the Y direction, each of the two folds connecting two subparts of the anchor. While the lateral folding gives a lateral fold in the X direction, which connects the four subparts of the anchor. By a series of lateral and longitudinal folds of a single flat, it is also possible to form an anchor with reinforcement. An example is shown in FIG. 15A ", in which the anchor is formed by a lateral folding in the X direction. The two reinforcements are at the outside of the two diverging branches of the foot portion, formed by two longitudinal folds.
La figure 15B présente une ancre avec renfort formée par un premier repliement latéral le long d'un pli I-I selon l'axe longitudinal X et un deuxième repliement longitudinal le long d'un autre pli II-II selon l'axe latéral Y. Par le premier repliement latéral, un renfort en forme Y inversé est posé cote-à-cote avec une sous-partie de l'ancre, tandis que par le deuxième repliement longitudinal, l'autre sous-partie de l'ancre vient s'interposer de l'autre côté du renfort. FIG. 15B shows an anchor with reinforcement formed by a first lateral folding along a fold II along the longitudinal axis X and a second longitudinal folding along another fold II-II along the lateral axis Y. By the first lateral folding, an inverted Y-shaped reinforcement is placed side-by-side with a sub-part of the anchor, while by the second longitudinal folding, the other sub-part of the anchor is interposed on the other side of the reinforcement.
La figure 15C présente une ancre avec renfort formée par deux repliements latéraux selon l'axe longitudinal X et un repliement longitudinal selon l'axe latéral Y. Par les deux repliements latéraux, chaque renfort est posé à côté d'une sous-partie de l'ancre, tandis que par le repliement longitudinal, les deux sous-parties d'ancre bloquent les deux renforts au milieu. FIG. 15C shows an anchor with reinforcement formed by two lateral folds along the longitudinal axis X and a longitudinal folding along the lateral axis Y. By the two lateral folds, each reinforcement is placed next to a sub-portion of the anchor, while by the longitudinal folding, the two anchor sub-parts block the two reinforcements in the middle.
La figure 16 présente une variation de forme du corps de l'ancre, qui comprend deux retours latéraux (16a, 16b) le long du corps. Par un procédé de repliement latéral le long d'un pli selon l'axe longitudinal X, une partie du corps peut s'écarter du plan principal afin de former les ailes. Les ailes permettent de répartir la charge sur toute la longueur de l'ancre, par exemple avec une forme delta partant de la tête. Les ailes s'étendent en général suivant un plan en dehors du plan principal du corps. Figure 16 shows a shape variation of the body of the anchor, which includes two lateral returns (16a, 16b) along the body. By a lateral folding process along a fold along the longitudinal axis X, a part of the body can deviate from the main plane to form the wings. The wings allow to distribute the load over the entire length of the anchor, for example with a delta shape starting from the head. The wings usually extend in a plane outside the main plane of the body.
Cette ancre peut être utilisée également comme un renfort. Comme présenté dans la figure 16 A, l'ancre avec les ailes en forme delta est superposée sur une ancre présentée dans la figure 14 A. Afin d'augmenter la stabilité entre le renfort et l'ancre, on peut prévoir des structures d'insertion. Par exemple, on peut supprimer la portion de pied dans le renfort de la figure 16A et ajouter l'ergot. De façon correspondante, on introduit l'encoche sur le pied de l'ancre pour recevoir l'insertion d'ergot du renfort. Il est également possible de garder une partie de pied du renfort comme présenté dans la figure 16B. Lorsque le renfort est superposé sur l'ancre, la partie divergente de pied du renfort est superposé sur les deux branches divergentes de pied de l'ancre. This anchor can be used also as a reinforcement. As shown in FIG. 16A, the anchor with the delta-shaped wings is superimposed on an anchor shown in FIG. 14A. In order to increase the stability between the reinforcement and the anchor, provision can be made for insertion. For example, we can remove the portion foot in the reinforcement of Figure 16A and add the lug. Correspondingly, the notch is introduced on the foot of the anchor to receive the insertion of the reinforcement pin. It is also possible to keep a foot portion of the reinforcement as shown in Figure 16B. When the reinforcement is superimposed on the anchor, the diverging foot portion of the reinforcement is superimposed on the two diverging legs of the anchor.
Dans les paragraphes suivants, on décrit un assemblage d'ancre avec renfort et platine. In the following paragraphs, an anchor assembly with reinforcement and platinum is described.
Dans une première catégorie, l'ancre est réalisée par un repliement latéral d'un seul méplat. In a first category, the anchor is made by a lateral folding of a single flat.
La figure 17A présente une ancre formée par un repliement latéral des deux sous-parties le long d'un pli selon l'axe longitudinal X. Il est possible de prévoir un certain espace entre les deux sous-parties. La figure 17B présente une platine en forme de toit, qui suit l'angle des deux branches divergentes de la portion de pied de l'ancre. En partie supérieure du toit, il existe une ouverture en forme de fente. La figure 17C présente un renfort en forme de Y inversé. Les flèches entres les figures 17 B et C montrent la direction d'insertion du renfort, en traversant la fente de la platine, dans l'espace entre les deux sous-parties de l'ancre. La figure 17 présente l'assemblage des trois pièces. Figure 17A shows an anchor formed by a lateral folding of the two sub-parts along a fold along the longitudinal axis X. It is possible to provide a certain space between the two sub-parts. Figure 17B shows a roof-shaped plate, which follows the angle of the two divergent branches of the foot portion of the anchor. In the upper part of the roof, there is an opening in the form of a slot. Figure 17C shows an inverted Y-shaped reinforcement. The arrows between FIGS. 17B and C show the insertion direction of the reinforcement, crossing the slit of the plate, in the space between the two sub-parts of the anchor. Figure 17 shows the assembly of the three parts.
Dans une deuxième catégorie, l'ancre est réalisée par un repliement longitudinal d'un seul méplat. In a second category, the anchor is made by a longitudinal folding of a single flat.
La figure 18A présente une ancre formée par un repliement longitudinal des deux sous-parties le long d'un pli selon l'axe latéral Y. Il est possible de prévoir un certain espace entre les deux sous-parties. La figure 18B présente une platine identique à celle décrite dans la figure 17B. La figure 18C présente un renfort en forme de Y inversé identique à celui décrit dans la figure 17C. Les flèches entres les figures 18 B et C montrent la direction d'insertion du renfort, en traversant la fente de la platine, dans l'espace entre les deux sous-parties de l'ancre. La figure 18 présente l'assemblage des trois pièces. Figure 18A shows an anchor formed by a longitudinal folding of the two sub-parts along a fold along the lateral axis Y. It is possible to provide a certain space between the two sub-parts. Figure 18B shows a plate identical to that described in Figure 17B. Figure 18C shows an inverted Y-shaped reinforcement identical to that described in Figure 17C. The arrows between FIGS. 18B and C show the insertion direction of the reinforcement, crossing the slot of platinum, in the space between the two subparts of the anchor. Figure 18 shows the assembly of the three parts.
Bien entendu, les particularités des modes de réalisation, telles que le nombre de plis selon la direction X ou Y, le nombre de sous-parties de l'ancre, la séquence de repliement, les différentes épaisseurs, les différents moyens pour le renforcement et la solidarisation peuvent varier et peuvent être combinées les uns aux autres pour définir une ancre dynamique optimal en fonction de l'élément de construction. Of course, the particularities of the embodiments, such as the number of folds in the X or Y direction, the number of subparts of the anchor, the folding sequence, the different thicknesses, the different means for the reinforcement and the joining can vary and can be combined with each other to define an optimal dynamic anchor according to the construction element.

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 s'étendant suivant un plan principal le long d'un axe longitudinal (Α-Α', X) et comprenant au moins deux sous-parties (12a, 12b), chacune définissant différentes portions successives formant respectivement la tête, le corps et le pied de l'ancre, caractérisée en ce qu'elle comprend au moins une pièce de renfort (20) interposée entre les deux sous-parties, s'étendant depuis la tête de l'ancre sur au moins une partie du pied. 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 foot being intended to be immersed in the constituent material of the construction element, the anchor extending along a main plane along a longitudinal axis (Α-Α ', X) and comprising at least two sub-parts (12a, 12b), each defining different successive portions forming respectively the head, the body and the foot of the anchor, characterized in that it comprises at least one reinforcing piece (20) interposed between the two sub parts, extending from the head of the anchor on at least a part of the foot.
2. Ancre selon la revendication 1, caractérisée en ce que l'ancre est obtenue par repliement d'un seul méplat comprenant au moins deux sous-parties de l'ancre liées de façon continue.  2. Anchor according to claim 1, characterized in that the anchor is obtained by folding a single flat comprising at least two sub-parts of the anchor continuously bonded.
3. Ancre selon la revendication 1, caractérisée en ce que l'ancre est composée par au moins deux sous-parties séparées, chacune étant obtenue par repliement d'au moins un méplat.  3. Anchor according to claim 1, characterized in that the anchor is composed of at least two separate sub-parts, each being obtained by folding at least one flat.
4. Ancre selon la revendication 1, caractérisée en ce que la pièce de renfort est une pièce indépendante interposée sur l'ancre.  4. Anchor according to claim 1, characterized in that the reinforcing piece is an independent piece interposed on the anchor.
5. Ancre selon la revendication 1, caractérisée en ce que la pièce de renfort est une pièce liée avec l'ancre de façon continue, obtenue par repliement d'un méplat contenant au moins une sous-partie de l'ancre.  5. Anchor according to claim 1, characterized in that the reinforcing piece is a piece connected with the anchor continuously, obtained by folding a flat containing at least a sub-part of the anchor.
6. Ancre selon la revendication 1, caractérisée en ce que 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.  6. Anchor according to claim 1, characterized in that 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 towards one another and extending from the divergent branches.
7. Ancre selon la revendication 6, caractérisée en ce qu'elle comprend des moyens de verrouillage (21, 22, 26) des branches convergentes l'une contre l'autre. 7. Anchor according to claim 6, characterized in that it comprises locking means (21, 22, 26) converging branches against each other.
8. Ancre selon la revendication 7, 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. 8. Anchor according to claim 7, 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.
9. Ancre selon la revendication 8, 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.  9. Anchor according to claim 8, 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.
10. Ancre selon l'une des revendications 8, 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.  10. Anchor according to one of claims 8, characterized in that the locking means (26) comprise a plurality of protrusions 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.
11. Ancre selon l'une des revendications 7 à 10, caractérisée en ce que le renfort comprend une fenêtre de passage (24) des moyens de verrouillage (21, 22, 26) réalisée dans son épaisseur.  11. Anchor according to one of claims 7 to 10, characterized in that the reinforcement comprises a passage window (24) of the locking means (21, 22, 26) formed in its thickness.
12. Ancre selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle comprend sur chacune des faces externes des deux sous- parties, au moins une nervures externe de relevage (31).  12. Anchor according to any one of the preceding claims, characterized in that it comprises on each of the outer faces of the two sub-parts, at least one external lifting ribs (31).
13. Ancre selon la revendication 12, caractérisée en ce que la nervure externe (31) s'étend suivant un axe longitudinal de l'ancre (Α-Α') ou suivant une direction inclinée par rapport à cet axe.  13. Anchor according to claim 12, characterized in that the outer rib (31) extends along a longitudinal axis of the anchor (Α-Α ') or in a direction inclined relative to this axis.
14. Ancre selon l'une quelconque des revendications précédentes, caractérisée en ce que les deux sous-parties (12a, 12b), et/ou au moins l'un des sous- parties (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). 14. Anchor according to any one of the preceding claims, characterized in that the two sub-parts (12a, 12b) and / or at least one of the sub-parts parts (12a, 12b) and the central reinforcement (20) are secured to each other by a bridge of material formed by a portion of flat folded along a fold (33, 36, 37).
15. Ancre selon la revendication 14, caractérisée en ce que la pliure (33, 36, Anchor according to claim 14, characterized in that the fold (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. 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.
16. Ancre selon l'une des revendications précédentes, caractérisée en ce qu'elle comprend au moins un retour latéral (16a, 16b) le long du corps, s'étendant suivant un plan en dehors du plan principal du corps.  16. Anchor according to one of the preceding claims, characterized in that it comprises at least one lateral return (16a, 16b) along the body, extending in a plane outside the main plane of the body.
17. Ancre selon l'une des revendications précédentes, caractérisée en ce que le retour latéral est avec une forme delta partant de la tête.  17. Anchor according to one of the preceding claims, characterized in that the lateral return is with a delta shape starting from the head.
EP16778080.8A 2016-09-02 2016-09-02 Reinforced dynamic lifting anchor for lifting, turning over a building element. Withdrawn EP3507431A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FR2016/052179 WO2018042083A1 (en) 2016-09-02 2016-09-02 Reinforced dynamic lifting anchor for lifting, turning over a building element.

Publications (1)

Publication Number Publication Date
EP3507431A1 true EP3507431A1 (en) 2019-07-10

Family

ID=57104060

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16778080.8A Withdrawn EP3507431A1 (en) 2016-09-02 2016-09-02 Reinforced dynamic lifting anchor for lifting, turning over a building element.

Country Status (7)

Country Link
US (1) US20190292022A1 (en)
EP (1) EP3507431A1 (en)
JP (1) JP2019526730A (en)
CN (1) CN109963994A (en)
AU (1) AU2016421469A1 (en)
CA (1) CA3035512A1 (en)
WO (1) WO2018042083A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017029439A1 (en) * 2015-08-14 2017-02-23 Marcel Arteon Reinforced, dynamic lifting anchor for a structural member

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2806261C2 (en) * 1978-02-15 1986-08-14 Pfeifer Seil- Und Hebetechnik Gmbh & Co, 8940 Memmingen Device for transporting precast concrete parts
SE446109B (en) * 1982-03-24 1986-08-11 Jan Rube FASTDON FOR ANCHORING IN LIGHT CONCRETE
DE3904772C1 (en) * 1989-02-17 1990-06-13 Unistrut Europe Plc, Bedford, Gb
US5596846A (en) * 1995-10-13 1997-01-28 The Burke Group Lifting anchor for embedment in concrete members
DE29612573U1 (en) * 1996-07-20 1997-11-20 Pfeifer Seil Hebetech Device for joining precast concrete parts
JPH11108024A (en) * 1997-10-07 1999-04-20 Wakai Sangyo Kk Building material moving method
KR100342878B1 (en) * 2000-02-03 2002-07-05 마사키 시게야마 Locking Device of a Latticed Reinforce Member and Method for Reinforcing a Concrete Construction Using it
US8413400B2 (en) * 2006-06-13 2013-04-09 Woodstock Percussion Pty Ltd. Recess former for concrete panels
ES2476800T3 (en) * 2006-12-22 2014-07-15 Marcel Arteon Anchor for handling construction elements, in particular a concrete panel
CN201133034Y (en) * 2007-11-15 2008-10-15 中铁十二局集团有限公司 Reinforced bar anchoring structural piece of reinforced concrete structure
EP2088112A1 (en) * 2008-02-08 2009-08-12 Marcel Arteon Anchor for supporting construction elements on supported diverging branches
CN201195913Y (en) * 2008-04-14 2009-02-18 博宇德工程股份有限公司 Multifunctional apparatus used for floor construction using steel carrier plate
CA2740498C (en) * 2008-10-23 2017-04-04 Obelix Holdings Pty Limited A lifting device and method for concrete elements
WO2015006825A1 (en) * 2013-07-19 2015-01-22 Casne Verige Pty Ltd Concrete lifting anchor
CN104947799A (en) * 2015-06-19 2015-09-30 中民筑友有限公司 Soft cable connection piece, prefabricated member and wallboard
CN205171683U (en) * 2015-11-04 2016-04-20 青岛天赢工业有限公司 Flying piece for building
CN205219409U (en) * 2015-12-01 2016-05-11 龙信建设集团有限公司 Sleeve pipe positioner in precast beam

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017029439A1 (en) * 2015-08-14 2017-02-23 Marcel Arteon Reinforced, dynamic lifting anchor for a structural member

Also Published As

Publication number Publication date
CN109963994A (en) 2019-07-02
WO2018042083A1 (en) 2018-03-08
AU2016421469A1 (en) 2019-04-11
US20190292022A1 (en) 2019-09-26
JP2019526730A (en) 2019-09-19
CA3035512A1 (en) 2018-03-08

Similar Documents

Publication Publication Date Title
EP1564141B1 (en) Aircraft seat rail and its production method
EP2097597B1 (en) Anchor for handling building elements, in particular a concrete panel
EP2252539B1 (en) Anchor for handling construction elements comprising fixed divergent arms
CA2251001A1 (en) Material handling pallet
WO2006079705A1 (en) Arrangement of elements for producing a panel
EP3377786B1 (en) Rigid chain link and rigid chain equipped with such a link
EP2665597A1 (en) Multi-branch fitting made of composite material and method of manufacturing such a multi-branch fitting
WO2017029439A1 (en) Reinforced, dynamic lifting anchor for a structural member
EP1156896B1 (en) Crimping ring and method for making same
FR3068962B1 (en) DYNAMIC AND EVOLVING ANCHOR FOR LIFTING A BUILDING ELEMENT, IN PARTICULAR OF LOW THICKNESS, MULTICONFIGURATION AND MULTI-STRENGTH
EP2370337A1 (en) Modular weighting elements
WO2018042083A1 (en) Reinforced dynamic lifting anchor for lifting, turning over a building element.
EP0975843B1 (en) Wall panel with device for assembling superposed wooden planks of the panel
EP3315180B1 (en) Assembly of at least two structural elements of a snowboard edge, and snowboard including an edge made with such an assembly
FR2690188A1 (en) Metal scaffolding plank - has sides which have rectangular lengthwise corrugations and lower edges turned inwards and upwards
EP0888955B1 (en) Sidewall-element for a vehicle with sheet piles and vehicle constructed with sheet-piles
EP2950677A2 (en) Decorative element comprising a number of stones which are assembled within a closed frame, comprising two decorative faces
WO2002085723A1 (en) Handling pallet
BE855714R (en) SUPPORT SYSTEM FOR PREFABRICATED CONCRETE BEAM ALLOWING TO HIDDEN THE POST CONSOLE
WO2019211661A1 (en) Method for manufacturing a floor, associated floor and integrated stay-type formwork element
FR2851638A1 (en) Frame bar for formwork panel, has pair of longitudinal external ribs protruding on external faces of flaps and extending in respective extensions of two longitudinal internal ribs
BE525721A (en)
BE514089A (en)
WO2017064374A1 (en) Dynamic anchor for lifting a building element, with means for fixedly holding a handling ring yoke
BE502386A (en)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20190304

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20191211

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20200603