EP3428109A1 - Dynamic and adaptive anchor for hoisting a construction element, especially thin elements, multi-configurations and multiple forces - Google Patents

Dynamic and adaptive anchor for hoisting a construction element, especially thin elements, multi-configurations and multiple forces Download PDF

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Publication number
EP3428109A1
EP3428109A1 EP18183414.4A EP18183414A EP3428109A1 EP 3428109 A1 EP3428109 A1 EP 3428109A1 EP 18183414 A EP18183414 A EP 18183414A EP 3428109 A1 EP3428109 A1 EP 3428109A1
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EP
European Patent Office
Prior art keywords
foot
unit
head
units
anchor
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.)
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Application number
EP18183414.4A
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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.)
ARTEON, MARCEL
LAPOULE, PATRICK
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Individual
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Publication date
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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
    • B66C1/666—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 for connection to anchor inserts embedded in concrete structures
    • 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 and progressive lifting anchor, a concrete building element, particularly thin such as a slab thin or ribbed, pipe, thin panel poured horizontally or vertically, vault or any other element having to use this type of anchor.
  • lifting anchors for known thin slabs such as the flat-footed anchor of the figure 8a , or the plate anchor of the figure 9a require, when they are put in place before pouring concrete, to be coupled to four armatures or metal bars 1-4 arranged in pairs, the first pair of bars 1, 2 being disposed on either side of the flat surface of the anchor considered in its width, the second pair of bars being disposed on either side of the flat part of the anchor considered in its thickness, the flat feet of the anchor or the tray being arranged under the bars.
  • Each pair of bars must be ligated at both ends.
  • This installation requires different handling operations, and various controls to ensure the proper placement of the anchor, bars and ligatures and generates time and cost.
  • these flat-footed anchors can only define a single configuration, a unique use with the bars and a single lifting force.
  • the document EP 2075392 describes a lifting tool for lifting a prefabricated floor element.
  • This lifting tool comprises a vertical section (10), which has at least one application point (11) capable of being hooked to a lifting device, and a transverse portion (17) extending in the transverse direction.
  • the vertical section further comprises a receiving means (12), with a lower space for receiving a wire. This receiving means is located between the vertical section and the transverse section.
  • the invention aims to overcome these disadvantages.
  • the invention proposes a simple and satisfactory solution to provide a lifting anchor suitable for thin construction elements (a slab for example), limiting the handling required for its implementation and to define multiple configurations and multiple forces of lifting.
  • the invention relates to a lifting anchor of a modular building element, comprising at least one assemblable unit obtained by folding a flat, defining a flat head portion capable of being attached to a machine gripping, and a flat foot part diverging from the head outside the main plane defined by the head.
  • the assemblable unit comprises a flattening junction portion interposed between the head and the foot, the flat part of which can be straight or forming a recess able to accommodate a bar, arranged under the plane defined by the foot of the unit, this flat being provided with at least one cutout defining a retaining lug of the bar located opposite the recess to partially close it.
  • the anchor according to the invention comprises a head part 6, and a part 7 forming the foot.
  • the anchor with the exception of the head 6 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 anchor has been particularly designed for the handling of thin slabs and its head is accessible from a free surface of the slab in which has been practiced a recess or "reservation" authorizing the passing of the head 6 of the anchor, then that the foot 7 of the anchor are immersed in the concrete.
  • the anchor according to the invention is formed of at least one assemblable unit 8 obtained by folding a flat, defining a flat head portion 9 having a passage hole 11 of a gripper, and a flat foot portion 12 diverge relative to the head 9 outside the main plane defined by the head of the unit.
  • the assemblable unit 8 comprises a junction portion 13 which is more visible on the figure 2 , which extends in the extension of the head of the unit and gives birth to the foot of the unit, to form a recess arranged in the plane defined by the foot 12 of the unit.
  • the recess 13 has a C-shaped cross-section in order to accommodate a bar with a cylindrical profile but may have any other shape that can serve as a reception housing for the bar or reinforcement.
  • the foot 12 of the unit comprises a retaining pin 14 (visible in section on the Figures 6a and 6b ) located opposite the recess to close it partially (see Figures 6a and 6b ) and which is advantageously obtained by a portion of flat lying in the extension of the plane of the foot 12 while the adjacent side portions 15 of the flat are folded under this plane to form the recess 13.
  • the bar 16 is introduced by one side of the unit 8 into the recess 13 and passes under the retaining pin 14.
  • the figure 3 represents an alternative embodiment of the retaining lug of the bar in the recess according to which two lateral lugs 17 are provided per assemblable unit and it is the flat portion interposed between these two lateral lugs which is folded under the plane defined by the foot 12 of the assemblable unit to define the recess.
  • the anchor comprises two assemblable units 8 paired with each other being positioned with their heads 9 contiguous to each other by their large face and their feet 12 diverging externally.
  • twin units 8 are joined to each other by a folded flat portion 18 coinciding with a side edge of the head of a unit.
  • figure 4 shows variants of embodiment of the anchor according to the invention according to which this anchor is composed of a single autonomous assembly unit with central pin 14 ( Figures 4a and 4c ), with lateral pins 17 ( figure 4b ) with a wider foot 19 than the head part and the joining part (which are of the same width).
  • This autonomous unit 8 can be used alone or in combination with another identical or different (in thickness or arrangement of lug or inclination of the foot). When two autonomous units are used, they can be secured to one another by rivets or welding.
  • the figure 5 represents a variant embodiment of the anchor of the figure 1 with assemblable units secured by a flattened bridge, according to which the heads of the twinned units are provided with two additional orifices 21 for passing additional stiffening bars 22 (but not mandatory) passing through the heads in their thickness. There is illustrated the presence of a single additional stiffening bar 22 passing through one of the orifices.
  • the figure 6 represents a variant embodiment of the anchor of the figure 1 without stiffening bar, but with a reinforcing plate 23, and an internal reinforcement 24.
  • the reinforcement 24 is also derived from the folding of a flat part defining a head portion 26 provided with a through hole 27 corresponding to those of the two assemblable units 8, and two opposing half-feet 28 each extending one side of the head 26 being separated by a cutout coinciding with a median plane for the head 26.
  • each half-foot 28 partly follows the underside of the foot of the corresponding unit.
  • Each half-foot 28 has a general complementary shape of the foot and the joining portion of the unit that can be assembled below it.
  • the reinforcement further comprises a lateral locking pin 29 between the two twin units.
  • the feet 12 of the assemblable units of the anchor comprise at their ends each a curved rim 31 for locking the corresponding half-foot of the reinforcement.
  • This assembly with assemblable units and central reinforcement can be completed by the insert plate 23 which will be mounted by sliding of its central base 32 provided with a window 33 for passing the contiguous heads assembled assemblable units until application of its two facets diverging sides 34 respectively along the upper faces of the feet 12 of the two twinned units
  • the internal reinforcement has a smaller thickness than the platen or assembled units of the anchor while in the example of the figure 6b the plate, the reinforcement and the assembled units have the same thickness, thus showing the numerous possible embodiments.
  • the figure 7 represents various configurations that can be realized with the anchor according to the invention, allowing by a simple assembly of assemblable elements (units 8, reinforcement 24, plate 23, bar 16, 22), to define 8 lifting forces between 2 and 17 kN, knowing that a unit used alone 8 makes it possible to define a lifting force of 1 kN, and that there remains the possibility of coupling one or the other of the represented assemblies, with the additional stiffening bars 22 of the figure 5 . So still many possibilities for defining lifting forces.
  • these flats In order to allow their folding along the fold lines A-D, these flats have a thickness generally less than 15 mm, preferably a thickness of 2, 3, 4 or 5 mm.
  • the reinforcement may be attached to the two flats by rivets at the head of the anchor and / or the body of the anchor or by folding the top and bottom ends of the anchor.
  • the anchor according to the invention has major advantages over anchors of the state of the art with the possibility of removing a pair of stiffening bars and the Prior art ligatures and definition of a multitude of lifting forces by assembling simple fabrication elements.
  • An anchor of this type is made by a simple and inexpensive manufacturing process, based on the folding of a single or two flattened (s) optionally reinforced (associated with a reinforcement) allows for the lifting of thin slabs but more heavy.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

L'invention concerne une ancre de levage d'un élément de construction, modulaire, comprenant au moins une unité assemblable (8) obtenue par pliage d'un méplat, définissant une partie de tête (6) de méplat susceptible d'être accrochée à un engin de préhension, et une partie de pied (7) de méplat divergent par rapport à la tête en dehors du plan principal défini par la tête.The invention relates to a lifting anchor of a modular building element comprising at least one assemblable unit (8) obtained by folding a flat, defining a flattened head portion (6) that can be hooked to a gripping apparatus, and a foot part (7) of flats diverging with respect to the head outside the main plane defined by the head.

Selon l'invention, l'unité assemblable (8) comprend une partie de jonction de méplat interposée entre la tête (6) et le pied (7) dont le méplat du pied peut être droit ou formant un renfoncement (13) pouvant accueillir une barre (16), disposé sous le plan défini par le pied de l'unité, le méplat étant pourvu d'au moins un ergot (14) de retenue de la barre situé en regard du renfoncement pour le refermer partiellement.

Figure imgaf001
According to the invention, the assemblable unit (8) comprises a flattening junction portion interposed between the head (6) and the foot (7) whose foot flat can be straight or forming a recess (13) accommodating a bar (16), disposed under the plane defined by the foot of the unit, the flat part being provided with at least one lug (14) retaining the bar located opposite the recess to partially close it.
Figure imgaf001

Description

L'invention concerne une ancre dynamique et évolutive de levage, d'un élément de construction de béton, notamment de faible épaisseur tel qu'une dalle mince ou nervurée, tuyau, panneau mince coulée à l'horizontale ou verticale, caveau ou tout autre élément ayant à utiliser ce type d'ancre.The invention relates to a dynamic and progressive lifting anchor, a concrete building element, particularly thin such as a slab thin or ribbed, pipe, thin panel poured horizontally or vertically, vault or any other element having to use this type of anchor.

Etat de l'art et ses inconvénientsState of the art and its disadvantages

Conformément aux figures 8 et 9, les ancres de levage pour dalles minces connues telles que l'ancre à pied plat de la figure 8a, ou l'ancre à plateau de la figure 9a, nécessitent lors de leur mise en place avant la coulée de béton, d'être couplées à quatre armatures ou barres métalliques 1-4 agencées par paires, la première paire de barres 1, 2 étant disposée de part et d'autre du méplat de l'ancre considéré dans sa largeur, la deuxième paire de barres étant disposée de part et d'autre du méplat de l'ancre considéré dans son épaisseur, les pieds plats de l'ancre ou le plateau étant disposés sous les barres. Chaque paire de barres doit être ligaturée aux deux extrémités.In accordance with Figures 8 and 9 , lifting anchors for known thin slabs such as the flat-footed anchor of the figure 8a , or the plate anchor of the figure 9a require, when they are put in place before pouring concrete, to be coupled to four armatures or metal bars 1-4 arranged in pairs, the first pair of bars 1, 2 being disposed on either side of the flat surface of the anchor considered in its width, the second pair of bars being disposed on either side of the flat part of the anchor considered in its thickness, the flat feet of the anchor or the tray being arranged under the bars. Each pair of bars must be ligated at both ends.

Cette mise en place nécessite différentes opérations de manutention, et différents contrôles pour garantir la bonne mise en place de l'ancre, des barres et des ligatures et engendre un temps et un coût certain.This installation requires different handling operations, and various controls to ensure the proper placement of the anchor, bars and ligatures and generates time and cost.

En outre, ces ancres à pieds plats ou à plateau ne peuvent définir qu'une unique configuration, une unique utilisation possible avec les barres et une unique force de levage.In addition, these flat-footed anchors can only define a single configuration, a unique use with the bars and a single lifting force.

Le document EP 2075392 décrit un outil de levage pour soulever un élément de plancher préfabriqué. Cet outil de levage comprend une section verticale (10), qui possède au moins un point d'application (11) susceptible d'être accroché à un dispositif de levage, et une partie transversale (17), qui s'étend dans la direction transversale. La section verticale comprend en outre un moyen de réception (12), avec un espace inférieur pour recevoir un fil. Ce moyen de réception est situé entre la section vertical et la partie transversale.The document EP 2075392 describes a lifting tool for lifting a prefabricated floor element. This lifting tool comprises a vertical section (10), which has at least one application point (11) capable of being hooked to a lifting device, and a transverse portion (17) extending in the transverse direction. The vertical section further comprises a receiving means (12), with a lower space for receiving a wire. This receiving means is located between the vertical section and the transverse section.

Cependant, aucun élément n'est prévu afin de retenir le fil par une fermeture partielle.However, no element is provided to hold the wire by a partial closure.

L'invention vise à pallier ces inconvénients.The invention aims to overcome these disadvantages.

Exposé de l'inventionPresentation of the invention

L'invention propose une solution simple et satisfaisante afin de proposer une ancre de levage adaptée pour éléments de construction minces (une dalle par exemple), limitant les manutentions nécessaires à sa mise en place et permettant de définir de multiples configurations et de multiples forces de levage.The invention proposes a simple and satisfactory solution to provide a lifting anchor suitable for thin construction elements (a slab for example), limiting the handling required for its implementation and to define multiple configurations and multiple forces of lifting.

A cet effet, l'invention concerne une ancre de levage d'un élément de construction, modulaire, comprenant au moins une unité assemblable obtenue par pliage d'un méplat, définissant une partie de tête de méplat susceptible d'être accrochée à un engin de préhension, et une partie de pied de méplat divergent par rapport à la tête en dehors du plan principal défini par la tête.To this end, the invention relates to a lifting anchor of a modular building element, comprising at least one assemblable unit obtained by folding a flat, defining a flat head portion capable of being attached to a machine gripping, and a flat foot part diverging from the head outside the main plane defined by the head.

Selon l'invention, l'unité assemblable comprend une partie de jonction de méplat interposée entre la tête et le pied, dont le méplat du pied peut être droit ou formant un renfoncement pouvant accueillir une barre, disposé sous le plan défini par le pied de l'unité, ce méplat étant pourvu d'au moins une découpe délimitant un ergot de retenue de la barre situé en regard du renfoncement pour le refermer partiellement.According to the invention, the assemblable unit comprises a flattening junction portion interposed between the head and the foot, the flat part of which can be straight or forming a recess able to accommodate a bar, arranged under the plane defined by the foot of the unit, this flat being provided with at least one cutout defining a retaining lug of the bar located opposite the recess to partially close it.

L'invention peut par ailleurs présenter l'un et/ou l'autre des aspects suivants considéré seul ou en combinaison éventuellement multiples :

  • Le pied d'une unité présente une largeur égale ou supérieure à celle de la tête de l'unité et la partie de jonction présente une largeur égale à celle de la tête de l'unité
  • La tête d'une unité comprend au moins un orifice de passage pour une barre de rigidification
  • L'ancre comprend deux unités assemblable positionnées avec leurs têtes accolées l'une l'autre et leurs pieds divergent extérieurement,
  • Les deux unités jumelées peuvent être identiques ou différentes en épaisseur
  • L'ergot d'une unité est disposé au niveau du plan médian du pied ou au niveau du bord latéral du pied de l'unité
  • Les deux unités jumelées sont jointes l'une à l'autre par une partie de méplat repliée coïncidant avec un bord de la tête d'une unité
  • L'ancre comprend un renfort assemblable issu du pliage d'un méplat définissant une partie de tête et deux demi pieds en opposition, la tête du renfort étant interposée entre les têtes des deux unités jumelées, et chaque demi-pied longe en partie la face inférieure du pied de l'unité correspondante,
  • le renfort comprend un ergot latéral de blocage entre les deux unités jumelées
  • les pieds des unités de l'ancre comprennent à leurs extrémités un rebord recourbé de blocage du demi-pied correspondant du renfort
  • l'ancre comprend une platine assemblable issue du pliage d'un méplat définissant une embase centrale pourvue d'une fenêtre de passage des têtes accolées des unités assemblable, et deux facettes latérales divergentes longeant respectivement les faces supérieures des pieds des deux unités jumelées
  • cette ancre de levage a été conçue pour que le ou les éléments, qui la constituent, puissent être préassemblés ou totalement assemblés et que cette ancre soit livrée prête à l'emploi.
The invention may furthermore exhibit one or both of the following aspects considered alone or in combination, possibly multiple:
  • The foot of a unit has a width equal to or greater than that of the head of the unit and the joining portion has a width equal to that of the head of the unit
  • The head of a unit comprises at least one through hole for a stiffening bar
  • The anchor comprises two assembled units positioned with their heads contiguous to each other and their feet diverge externally,
  • The two twin units may be identical or different in thickness
  • The lug of a unit is located at the median plane of the foot or at the lateral edge of the foot of the unit
  • The two paired units are joined to each other by a folded flat portion coinciding with an edge of the head of a unit
  • The anchor comprises an assemblable reinforcement resulting from the folding of a flat part defining a head portion and two half-feet in opposition, the head of the reinforcement being interposed between the heads of the two twinned units, and each half-foot partly runs along the face. lower foot of the corresponding unit,
  • the reinforcement comprises a lateral locking pin between the two twinned units
  • the feet of the anchor units comprise at their ends a curved locking edge of the corresponding half-foot of the reinforcement
  • the anchor comprises an assemblable platen resulting from the folding of a flat part defining a central base provided with a passage window of the contiguous heads of the assemblable units, and two diverging lateral facets respectively along the upper faces of the feet of the two twinned units
  • this lifting anchor is designed so that the element or elements, which constitute it, can be preassembled or fully assembled and that anchor is delivered ready for use.

L'invention sera maintenant décrite en référence aux figures annexées représentant schématiquement différents modes de réalisation de l'invention et parmi lesquelles :

  • La figure 1 représente par une vue en perspective, un premier mode de réalisation de l'ancre selon l'invention avec deux unités jumelées et résultant du pliage d'un unique méplat, assemblée à deux barres de rigidification
  • La figure 2 illustre l'ancre de la figure 1 seule, mettant en évidence l'ergot central de retenue de la barre dans le renfoncement
  • La figure 3 représente une variante de réalisation de l'ergot de retenue de la barre dans le renfoncement selon laquelle deux ergots latéraux sont prévus par unité assemblable
  • La figure 4 montre des variantes de réalisation d'une unité assemblable autonome avec ergot central (a), avec ergots latéraux (b), avec ergot central et pied plus large que la partie de tête et la partie de jonction (qui sont de même largeur)
  • La figure 5 représente une variante de réalisation de l'ancre de la figure 1 selon laquelle les têtes des unités jumelées sont pourvues de deux orifices de passage de barres de rigidification traversant les têtes dans leur épaisseur, assemblée à une barre de rigidification traversant l'un des orifices, vue en perspective (a), vue en coupe transversale (b)
  • La figure 6 représente une variante de réalisation de l'ancre de la figure 1, sans barre de rigidification, mais avec une platine de renfort, et un renfort interne, le renfort interne présentant une plus faible épaisseur que la platine ou les unités assemblées de l'ancre (a), la platine, le renfort et les unités assemblées présentant la même épaisseur (b), la figure (c) représente par une vue en perspective le renfort seul, la figure (d) : le renfort de la figure (c) assemblé à deux unités jumelées, la figure (e) : une platine rapportée seule, la figure (f) l'ensemble représenté sur la figure (d) assemblé à la platine
  • La figure 7 représente différentes configurations pouvant être réalisées avec l'ancre selon l'invention, permettant par un simple assemblage d'unités assemblables (renfort, platine, barre), de définir 8 forces de levage comprises entre 2 et 17 kN
  • Les figures 8 et 9 précitées représentent par des vues en perspective des ancres à pieds plats et plateau selon l'art antérieur seules (8a) et (9a), et avec les quatre barres nécessaires et leurs ligatures (8b) et (9b).
The invention will now be described with reference to the appended figures schematically representing various embodiments of the invention and among which:
  • The figure 1 is a perspective view, a first embodiment of the anchor according to the invention with two twin units and resulting from the folding of a single flat, assembled to two stiffening bars
  • The figure 2 illustrates the anchor of the figure 1 alone, highlighting the central retaining lug of the bar in the recess
  • The figure 3 represents an alternative embodiment of the retaining lug of the bar in the recess according to which two lateral lugs are provided per assemblable unit
  • The figure 4 shows alternative embodiments of an autonomous assembly unit with central lug (a), with lateral lugs (b), with central lug and foot wider than the head portion and the junction portion (which are of the same width)
  • The figure 5 represents a variant embodiment of the anchor of the figure 1 according to which the heads of the twinned units are provided with two holes for the passage of stiffening bars passing through the heads in their thickness, assembled to a stiffening bar passing through one of the orifices, seen in perspective (a), seen in cross-section ( b)
  • The figure 6 represents a variant embodiment of the anchor of the figure 1 without stiffening bar, but with a reinforcing plate, and an internal reinforcement, the internal reinforcement having a smaller thickness than the plate or the assembled units of the anchor (a), the plate, the reinforcement and the assembled units having the same thickness (b), the figure (c) represents in a perspective view only the reinforcement, the figure (d): the reinforcement of the figure (c) assembled to two twin units, the figure (e): a platinum reported alone, the figure (f) the assembly shown in Figure (d) assembled to the platinum
  • The figure 7 represents different configurations that can be made with the anchor according to the invention, allowing a simple assembly of assemblable units (reinforcement, platinum, bar), to define 8 lifting forces between 2 and 17 kN
  • The Figures 8 and 9 The aforesaid represent, in perspective views, flat-foot anchors and plates according to the prior art alone (8a) and (9a), and with the four necessary bars and their ligatures (8b) and (9b).

Conformément aux figures annexées, l'ancre selon l'invention comporte une partie de tête 6, et une partie 7 formant le pied.According to the appended figures, the anchor according to the invention comprises a head part 6, and a part 7 forming the foot.

L'ancre, à l'exception de la tête 6 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 6 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.

Cette ancre a particulièrement été conçue pour la manutention de dalles minces et sa tête est accessible depuis une surface libre de la dalle au sein de laquelle a été pratiqué un évidemment ou "réservation" autorisant le dépassement de la tête 6 de l'ancre, alors que le pied 7 de l'ancre sont immergés dans le béton.This anchor has been particularly designed for the handling of thin slabs and its head is accessible from a free surface of the slab in which has been practiced a recess or "reservation" authorizing the passing of the head 6 of the anchor, then that the foot 7 of the anchor are immersed in the concrete.

Conformément à l'invention, afin de limiter le nombre de barres ou armatures de rigidification nécessaires, et de supprimer la présence de ligatures et leur manutention, l'ancre selon l'invention est formée d'au moins une unité assemblable 8 obtenue par pliage d'un méplat, définissant une partie de tête de méplat 9 dotée d'un orifice de passage 11 d'un engin de préhension, et une partie de pied de méplat 12 divergent par rapport à la tête 9 en dehors du plan principal défini par la tête de l'unité.According to the invention, in order to limit the number of necessary stiffening bars or reinforcement, and to eliminate the presence of ligatures and their handling, the anchor according to the invention is formed of at least one assemblable unit 8 obtained by folding a flat, defining a flat head portion 9 having a passage hole 11 of a gripper, and a flat foot portion 12 diverge relative to the head 9 outside the main plane defined by the head of the unit.

Selon l'invention, l'unité assemblable 8 comprend une partie de jonction 13 mieux visible sur la figure 2, qui s'étend dans le prolongement de la tête de l'unité et donne naissance au pied de l'unité, pour former un renfoncement disposé sous le plan défini par le pied 12 de l'unité. Dans l'exemple représenté, le renfoncement 13 présente en section transversale une forme de C pour pouvoir accueillir une barre au profil cylindrique mais pourra présenter toute autre forme susceptible de servir de logement d'accueil pour la barre ou armature.According to the invention, the assemblable unit 8 comprises a junction portion 13 which is more visible on the figure 2 , which extends in the extension of the head of the unit and gives birth to the foot of the unit, to form a recess arranged in the plane defined by the foot 12 of the unit. In the example shown, the recess 13 has a C-shaped cross-section in order to accommodate a bar with a cylindrical profile but may have any other shape that can serve as a reception housing for the bar or reinforcement.

Pour retenir la barre dans ce renfoncement, le pied 12 de l'unité comprend un ergot de retenue 14 (visible en coupe sur les figures 6a et 6b) situé en regard du renfoncement pour le refermer partiellement (voir figures 6a et 6b) et qui est avantageusement obtenu par une partie de méplat s'étendant dans le prolongement du plan du pied 12 tandis que les parties latérales adjacentes 15 du méplat sont repliées sous ce plan pour former le renfoncement 13.To retain the bar in this recess, the foot 12 of the unit comprises a retaining pin 14 (visible in section on the Figures 6a and 6b ) located opposite the recess to close it partially (see Figures 6a and 6b ) and which is advantageously obtained by a portion of flat lying in the extension of the plane of the foot 12 while the adjacent side portions 15 of the flat are folded under this plane to form the recess 13.

La barre 16 est introduite par un côté de l'unité 8 dans le renfoncement 13 et passe sous l'ergot de retenue 14.The bar 16 is introduced by one side of the unit 8 into the recess 13 and passes under the retaining pin 14.

La figure 3 représente une variante de réalisation de l'ergot de retenue de la barre dans le renfoncement selon laquelle deux ergots latéraux 17 sont prévus par unité assemblable et c'est la partie de méplat interposée entre ces deux ergots latéraux qui est repliée sous le plan défini par le pied 12 de l'unité assemblable pour définir le renfoncement.The figure 3 represents an alternative embodiment of the retaining lug of the bar in the recess according to which two lateral lugs 17 are provided per assemblable unit and it is the flat portion interposed between these two lateral lugs which is folded under the plane defined by the foot 12 of the assemblable unit to define the recess.

Sur ces figures 1 à 3, l'ancre comporte deux unités assemblables 8 jumelées l'une à l'autre en étant positionnées avec leurs têtes 9 accolées l'une l'autre par leur grande face et leurs pieds 12 divergeant extérieurement.On these Figures 1 to 3 , the anchor comprises two assemblable units 8 paired with each other being positioned with their heads 9 contiguous to each other by their large face and their feet 12 diverging externally.

En outre, ces deux unités jumelées 8 sont jointes l'une à l'autre par une partie de méplat 18 repliée coïncidant avec un bord latéral de la tête d'une unité.In addition, these two twin units 8 are joined to each other by a folded flat portion 18 coinciding with a side edge of the head of a unit.

Au contraire, la figure 4 montre des variantes de réalisation de l'ancre selon l'invention selon lesquelles cette ancre est composée d'une unique unité assemblable autonome avec ergot central 14 (figures 4a et 4c), avec ergots latéraux 17 (figure 4b), avec pied plus large 19 que la partie de tête et la partie de jonction (qui sont de même largeur).On the contrary, figure 4 shows variants of embodiment of the anchor according to the invention according to which this anchor is composed of a single autonomous assembly unit with central pin 14 ( Figures 4a and 4c ), with lateral pins 17 ( figure 4b ) with a wider foot 19 than the head part and the joining part (which are of the same width).

Cette unité autonome 8' peut être utilisée seule ou jumelée à une autre identique ou différente (en épaisseur ou disposition d'ergot ou inclinaison du pied). Lorsque deux unités autonomes sont utilisées, elles peuvent être solidarisées l'une à l'autre par rivets ou soudure.This autonomous unit 8 'can be used alone or in combination with another identical or different (in thickness or arrangement of lug or inclination of the foot). When two autonomous units are used, they can be secured to one another by rivets or welding.

La figure 5 représente une variante de réalisation de l'ancre de la figure 1 avec unités assemblables solidarisées par un pont de méplat, selon laquelle les têtes des unités jumelées sont pourvues de deux orifices supplémentaires 21 de passage de barres de rigidification supplémentaires 22 (mais non obligatoires) traversant les têtes dans leur épaisseur. On a illustré la présence d'une seule barre de rigidification supplémentaire 22 traversant l'un des orifices.The figure 5 represents a variant embodiment of the anchor of the figure 1 with assemblable units secured by a flattened bridge, according to which the heads of the twinned units are provided with two additional orifices 21 for passing additional stiffening bars 22 (but not mandatory) passing through the heads in their thickness. There is illustrated the presence of a single additional stiffening bar 22 passing through one of the orifices.

La figure 6 représente une variante de réalisation de l'ancre de la figure 1, sans barre de rigidification, mais avec une platine de renfort 23, et un renfort interne 24.The figure 6 represents a variant embodiment of the anchor of the figure 1 without stiffening bar, but with a reinforcing plate 23, and an internal reinforcement 24.

Conformément à la figure 6c, le renfort 24 est également issu du pliage d'un méplat définissant une partie de tête 26 pourvue d'un orifice de passage 27 venant en correspondance avec ceux des deux unités assemblables 8, et deux demi pieds en opposition 28 s'étendant chacun d'un côté de la tête 26 en étant séparé par une découpe coïncidant avec un plan médian pour la tête 26.In accordance with the Figure 6c , the reinforcement 24 is also derived from the folding of a flat part defining a head portion 26 provided with a through hole 27 corresponding to those of the two assemblable units 8, and two opposing half-feet 28 each extending one side of the head 26 being separated by a cutout coinciding with a median plane for the head 26.

Conformément à la figure 6a, la tête 26 du renfort est interposée entre les têtes 9 des deux unités jumelées, et chaque demi-pied 28 longe en partie la face inférieure du pied de l'unité correspondante. Chaque demi-pied 28 présente une forme générale complémentaire du pied et de la partie de jonction de l'unité assemblable qu'il longe inférieurement.In accordance with the figure 6a , the head 26 of the reinforcement is interposed between the heads 9 of the two twin units, and each half-foot 28 partly follows the underside of the foot of the corresponding unit. Each half-foot 28 has a general complementary shape of the foot and the joining portion of the unit that can be assembled below it.

Le renfort comprend en outre un ergot latéral 29 de blocage entre les deux unités jumelées.The reinforcement further comprises a lateral locking pin 29 between the two twin units.

Eventuellement, conformément à la figure 6b, les pieds 12 des unités assemblables de l'ancre comprennent à leurs extrémités chacune un rebord recourbé 31 de blocage du demi-pied correspondant du renfort.Optionally, in accordance with figure 6b , the feet 12 of the assemblable units of the anchor comprise at their ends each a curved rim 31 for locking the corresponding half-foot of the reinforcement.

Cet ensemble à unités assemblables et renfort central peut être complété par la platine rapportée 23 qui viendra se monter par glissement de son embase centrale 32 pourvue d'une fenêtre 33 de passage des têtes accolées des unités assemblables assemblable jusqu'à application de ses deux facettes latérales divergentes 34 longeant respectivement les faces supérieures des pieds 12 des deux unités jumeléesThis assembly with assemblable units and central reinforcement can be completed by the insert plate 23 which will be mounted by sliding of its central base 32 provided with a window 33 for passing the contiguous heads assembled assemblable units until application of its two facets diverging sides 34 respectively along the upper faces of the feet 12 of the two twinned units

Dans l'exemple illustré sur la figure 6a, le renfort interne présente une plus faible épaisseur que la platine ou les unités assemblées de l'ancre tandis que dans l'exemple de la figure 6b, la platine, le renfort et les unités assemblées présentent la même épaisseur, montrant ainsi les nombreuses variantes de réalisation possibles.In the example shown on the figure 6a , the internal reinforcement has a smaller thickness than the platen or assembled units of the anchor while in the example of the figure 6b the plate, the reinforcement and the assembled units have the same thickness, thus showing the numerous possible embodiments.

La figure 7 représente différentes configurations pouvant être réalisées avec l'ancre selon l'invention, permettant par un simple assemblage d'éléments assemblables (unités 8, renfort 24, platine 23, barre 16, 22), de définir 8 forces de levage comprises entre 2 et 17 kN, sachant qu'une unité utilisée seule 8 permet de définir une force de levage de 1 kN, et qu'il reste la possibilité de coupler l'un ou l'autre des ensembles représentés, avec les barres de rigidification supplémentaires 22 de la figure 5. Donc encore de nombreuses possibilités de définition de forces de levage.The figure 7 represents various configurations that can be realized with the anchor according to the invention, allowing by a simple assembly of assemblable elements (units 8, reinforcement 24, plate 23, bar 16, 22), to define 8 lifting forces between 2 and 17 kN, knowing that a unit used alone 8 makes it possible to define a lifting force of 1 kN, and that there remains the possibility of coupling one or the other of the represented assemblies, with the additional stiffening bars 22 of the figure 5 . So still many possibilities for defining lifting forces.

Les ancres décrites ci-dessus peuvent comprendre de façon optionnelle :

  • un renfort central,
  • un ou plusieurs orifices fermés ou une ou plusieurs gorges ouvertes de passage d'un fer ou d'une armature
  • un ergot ou deux ergots latéraux par méplat
  • une platine rapportée
  • la platine pouvant être repliée et/ou conformée pour recevoir un fer ou une armature
  • la platine étant alors pourvue des orifices fermés ou des gorges ouvertes de passage d'un fer ou d'une armature
The anchors described above may optionally include:
  • a central reinforcement,
  • one or more closed orifices or one or more open grooves for passing an iron or an armature
  • a lug or two lateral lugs by flat
  • a platinum reported
  • the plate can be folded and / or shaped to receive an iron or frame
  • the plate then being provided with closed or open grooves for the passage of an iron or an armature

Afin d'autoriser leur pliage suivant les lignes de pliage A-D, ces méplats présentent une épaisseur généralement inférieure à 15 mm, de préférence une épaisseur de 2, 3, 4 ou 5 mm.In order to allow their folding along the fold lines A-D, these flats have a thickness generally less than 15 mm, preferably a thickness of 2, 3, 4 or 5 mm.

Dans les 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 ou par pliage des extrémités haut et bas de l'ancre.In the embodiments shown, the reinforcement may be attached to the two flats by rivets at the head of the anchor and / or the body of the anchor or by folding the top and bottom ends 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 avec possibilité de supprimer une paire de barre de rigidification et les ligatures de l'art antérieur et de définition d'une multitude de forces de levage par assemblages d'éléments de fabrication simple.As can be seen from the description that has just been given and the figures, the anchor according to the invention has major advantages over anchors of the state of the art with the possibility of removing a pair of stiffening bars and the Prior art ligatures and definition of a multitude of lifting forces by assembling simple fabrication elements.

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 méplat(s) éventuellement renforcés (associés à un renfort) permet de réaliser le levage de dalles minces mais plus lourdes.An anchor of this type is made by a simple and inexpensive manufacturing process, based on the folding of a single or two flattened (s) optionally reinforced (associated with a reinforcement) allows for the lifting of thin slabs but more heavy.

Bien entendu, les particularités des modes de réalisation, telles que, l'inclinaison à 10, 20, ... 45[deg.] des pieds ou demi-pied des unités assemblables ou des renforts peuvent être combinées les uns aux autres pour définir un ancrage optimal en fonction de l'élément de construction à lever.Of course, the features of the embodiments, such as, tilting at 10, 20, ... 45 [deg.] Of the feet or half-foot of the assemblable units or reinforcements may be combined with each other to define an optimal anchorage according to the element of construction to be lifted.

Claims (11)

Ancre de levage d'un élément de construction, modulaire, comprenant au moins une unité assemblable obtenue par pliage d'un méplat, définissant une partie de tête (6) de méplat susceptible d'être accrochée à un engin de préhension, et une partie de pied (7) de méplat divergent par rapport à la tête en dehors du plan principal défini par la tête, l'unité assemblable (8) comprend une partie de jonction de méplat interposée entre la tête et le pied,
caractérisée en ce que le méplat du pied peut être droit ou formant un renfoncement pouvant accueillir une barre, disposé sous le plan défini par le pied de l'unité, le méplat étant pourvu d'au moins un ergot (14) de retenue de la barre situé en regard du renfoncement (13) pour le refermer partiellement.Lifting anchor of a modular building element, comprising at least one assemblable unit obtained by folding a flat part, defining a flat head portion (6) capable of being hooked to a gripping apparatus, and a part with a flat surface (7) diverging from the head outside the main plane defined by the head, the assemblable unit (8) comprises a flattening junction portion interposed between the head and the foot,
characterized in that the flat part of the foot may be straight or forming a recess able to accommodate a bar, arranged under the plane defined by the foot of the unit, the flat part being provided with at least one lug (14) for retaining the bar located opposite the recess (13) to close it partially. Ancre selon la revendication 1, dans laquelle le pied d'une unité présente une largeur égale ou supérieure à celle de la tête (9) de l'unité et la partie de jonction présente une largeur égale à celle de la tête de l'unité.Anchor according to claim 1, wherein the foot of a unit has a width equal to or greater than that of the head (9) of the unit and the joining portion has a width equal to that of the head of the unit . Ancre selon la revendication 1 ou 2, dans laquelle la tête d'une unité comprend au moins un orifice de passage pour une barre de rigidification (22)Anchor according to claim 1 or 2, wherein the head of a unit comprises at least one through hole for a stiffening bar (22) Ancre selon l'une des revendications précédentes, comprenant deux unités assemblables jumelées l'une à l'autre en étant positionnées avec leurs têtes (9) accolées l'une l'autre et leurs pieds (12) divergent extérieurement.Anchor according to one of the preceding claims, comprising two assemblable units twinned to each other by being positioned with their heads (9) contiguous to each other and their feet (12) diverge externally. Ancre selon la revendication 4, dans laquelle les deux unités jumelées (8) sont différentes en épaisseur.Anchor according to claim 4, wherein the two twin units (8) are different in thickness. Ancre selon la revendication 4 ou 5, dans laquelle l'ergot (14, 17) d'une unité est disposée au niveau du plan médian du pied ou au niveau du bord latéral du pied de l'unité.Anchor according to claim 4 or 5, wherein the lug (14, 17) of a unit is disposed at the median plane of the foot or at the lateral edge of the foot of the unit. Ancre selon l'une des revendications 4 à 6, dans laquelle les deux unités jumelées sont jointes l'une à l'autre par une partie de méplat (18) repliée coïncidant avec un bord de la tête d'une unité.Anchor according to one of claims 4 to 6, wherein the two twin units are joined to each other by a folded flat portion (18) coinciding with an edge of the head of a unit. Ancre selon l'une des revendications 4 à 7, comprenant une platine (23) assemblable issue du pliage d'un méplat définissant une embase centrale (32) pourvue d'une fenêtre de passage (33) des têtes accolées des unités assemblables, et deux facettes latérales divergentes (34) longeant respectivement les faces supérieures des pieds des deux unités jumelées.Anchor according to one of claims 4 to 7, comprising a plate (23) assembled from the folding of a flat defining a central base (32) provided with a passage window (33) contiguous heads assemblable units, and two divergent lateral facets (34) respectively along the upper faces of the feet of the two twinned units. Ancre selon l'une des revendications 4 à 8, comprenant un renfort (24) assemblable issu du pliage d'un méplat définissant une partie de tête et deux demi pieds en opposition (28), la tête du renfort étant interposée entre les têtes des deux unités jumelées, et chaque demi-pied longe en partie la face inférieure du pied de l'unité correspondante.Anchor according to one of claims 4 to 8, comprising an assemblable reinforcement (24) resulting from the folding of a flat part defining a head portion and two opposing half-feet (28), the head of the reinforcement being interposed between the heads of the two paired units, and each half-foot runs along part of the underside of the foot of the corresponding unit. Ancre selon la revendication 9, dans laquelle les pieds des unités de l'ancre comprennent à leurs extrémités chacune un rebord recourbé (31) de blocage du demi-pied correspondant du renfort.Anchor according to claim 9, wherein the feet of the anchor units comprise at their ends each a curved rim (31) for locking the corresponding half-foot of the reinforcement. Ancre selon la revendication 4, dans laquelle les deux unités jumelées (8) sont identiques en épaisseur.Anchor according to claim 4, wherein the two twin units (8) are identical in thickness.
EP18183414.4A 2017-07-13 2018-07-13 Dynamic and adaptive anchor for hoisting a construction element, especially thin elements, multi-configurations and multiple forces Withdrawn EP3428109A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1756665A FR3068962B1 (en) 2017-07-13 2017-07-13 DYNAMIC AND EVOLVING ANCHOR FOR LIFTING A BUILDING ELEMENT, IN PARTICULAR OF LOW THICKNESS, MULTICONFIGURATION AND MULTI-STRENGTH

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4151816A1 (en) * 2021-07-14 2023-03-22 Illinois Tool Works, Inc. Anchor
USD1010160S1 (en) 2021-07-14 2024-01-02 Illinois Tool Works Inc. Anchor

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2704435A1 (en) * 1977-02-03 1978-08-10 Fricker Frimeda Metall Draht ELEVATOR AND TRANSPORT ANCHOR FOR PRECAST CONCRETE ELEMENTS
BE1016424A6 (en) * 2005-01-24 2006-10-03 Echo Lifting hook for prefabricated reinforced concrete slab, comprises U shaped loop section and cross direction part for positioning beneath slab reinforcing structure
US20070126249A1 (en) * 2005-12-07 2007-06-07 Leach Terry A Concrete lifting eye-flexi lift
EP2075392A1 (en) * 2007-12-24 2009-07-01 Echo Prefabricated concrete element
US20120227335A1 (en) * 2011-03-08 2012-09-13 Sidney E. Francies, III Lifting Anchor for a Concrete Slab
WO2014174377A2 (en) * 2013-04-23 2014-10-30 Meshlift Pty Ltd Systems and methods for lifting gridmesh

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2704435A1 (en) * 1977-02-03 1978-08-10 Fricker Frimeda Metall Draht ELEVATOR AND TRANSPORT ANCHOR FOR PRECAST CONCRETE ELEMENTS
BE1016424A6 (en) * 2005-01-24 2006-10-03 Echo Lifting hook for prefabricated reinforced concrete slab, comprises U shaped loop section and cross direction part for positioning beneath slab reinforcing structure
US20070126249A1 (en) * 2005-12-07 2007-06-07 Leach Terry A Concrete lifting eye-flexi lift
EP2075392A1 (en) * 2007-12-24 2009-07-01 Echo Prefabricated concrete element
US20120227335A1 (en) * 2011-03-08 2012-09-13 Sidney E. Francies, III Lifting Anchor for a Concrete Slab
WO2014174377A2 (en) * 2013-04-23 2014-10-30 Meshlift Pty Ltd Systems and methods for lifting gridmesh

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4151816A1 (en) * 2021-07-14 2023-03-22 Illinois Tool Works, Inc. Anchor
USD1010160S1 (en) 2021-07-14 2024-01-02 Illinois Tool Works Inc. Anchor

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FR3068962A1 (en) 2019-01-18

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