EP3346161A1 - Hanging device for scaffolding elements to be handled - Google Patents

Hanging device for scaffolding elements to be handled Download PDF

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Publication number
EP3346161A1
EP3346161A1 EP18305012.9A EP18305012A EP3346161A1 EP 3346161 A1 EP3346161 A1 EP 3346161A1 EP 18305012 A EP18305012 A EP 18305012A EP 3346161 A1 EP3346161 A1 EP 3346161A1
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EP
European Patent Office
Prior art keywords
axis
rod
turn
scaffolding
scaffolding element
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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
EP18305012.9A
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German (de)
French (fr)
Inventor
Jérôme LEFEBVRE
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Kaefer Wanner SAS
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Kaefer Wanner SAS
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Publication date
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Publication of EP3346161A1 publication Critical patent/EP3346161A1/en
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    • 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
    • E04G5/00—Component parts or accessories for scaffolds

Definitions

  • the invention relates to a device for making the removable connection of at least one scaffolding element to be handled on a lifting sling.
  • a lifting sling constituted by a suitable flexible link for example in rope, generally terminated by a metal element such as a hook.
  • Handling by means of the hoist means in particular to be able to hang the scaffolding element (s) to be handled by the lifting sling.
  • the attachment of the scaffolding elements to the rope constituting the lifting sling is performed by means of the rope itself, by mooring scaffold elements to handle.
  • the scaffolders wind up the part of the rope extending from the end terminated by the hook around the scaffolding element or elements to be handled, and then fix the portion of rope thus wound on the scaffolding elements by means of one or more appropriate nodes. Then, when handling is complete (lifting or removal), it is necessary to undo the knots and release the part of the rope wrapped around the scaffolding element (s).
  • the purpose of the invention is precisely to remedy these drawbacks by proposing a new type of attachment device by means of which one or more scaffolding elements to be handled can be hooked directly to the end of a lifting sling before handling, then unhooked after handling, particularly easy and fast, without the security of handling is penalized.
  • the invention relates to a device for making the removable connection of at least one scaffolding element to be handled on a lifting sling, characterized in that it comprises a rod comprising a first curved end portion forming a loop disposed in a plane perpendicular to a plane normal to the axis of the rod and a second curved end portion forming a single helical coil winding about an axis extending in a direction substantially parallel to the normal plane to the axis of the rod, so that said turn is adapted to be engaged through an orifice in the scaffolding element by rotation of the device in a first direction of rotation along the axis of the turn.
  • the device of the invention is an easily manipulable attachment accessory, intended to be interposed between the lifting sling and the scaffolding element to be handled. It is particularly remarkable in that the first end portion of the loop-shaped shank delimits an internal hook-in space, making it possible to ensure a safe and easy connection with the lifting sling by engaging for example a hook ending the sling in the hooking space delimited by the loop, and in that the second end portion of the rod forming a single helical turn which wraps around an axis which extends in a direction substantially parallel to the plane normal to the axis of the rod, ensures a simple and fast way a secure connection with the scaffolding element, by engaging this spiral coil in an existing orifice of the element d scaffolding by rotation following the curvature of the turn in a first direction of rotation along the axis of the turn until the turn is fully engaged through the orifice in question.
  • the second end portion of the rod is arranged by making a single turn around an axis which extends in a direction parallel to the plane normal to the axis of the rod so as to form a single helical turn. It therefore extends in a rotational and translational movement about its axis, and the axis of this helical turn is intended to be in a plane parallel to the normal plane of the stem.
  • This configuration of the second end portion of the rod allows it to be easily and quickly engaged through a hole in the scaffolding element by a simple rotational movement following the curvature of the rod. turn. The hooking between the device of the invention and the scaffolding element is thus properly locked and lifting (or removal) can be done safely.
  • the security is reinforced by the fact that the separation of the device of the invention from the scaffolding element requires disengaging the end portion of the rod forming the single helical turn of the orifice of the scaffolding element, which is made possible only by intervention of the scaffolder, by rotation along the curvature of the coil in a second direction of rotation opposite to that allowing the engagement of the coil through the orifice.
  • the formation of the single helical turn in a direction substantially parallel to a plane normal to the axis of the rod facilitates the handling of the device during the engagement and disengagement operations of the helical turn through the orifice of the scaffolding element.
  • the hooking and unhitching of the device of the invention with the scaffolding element to be handled advantageously requires a single rotation about a pivot axis constituted by the axis around which the single helical turn is wound.
  • the helical turn wraps around an axis extending in a direction orthoradial with respect to the axis of the rod.
  • the coil has a substantially straight free end oriented towards the axis of the rod.
  • the turn is wound at an angle less than or equal to 60 ° with respect to the axis around which it winds.
  • the axis of the loop and the axis of the helical turn extend parallel to each other in the same direction.
  • the device is made in one piece.
  • the device is made of a metallic material or a composite material.
  • substantially parallel or perpendicular means a direction / an angle deviating from at most ⁇ 20 °, or even at most 10 ° or at most 5 ° of a parallel or perpendicular direction .
  • the invention relates more specifically to the case where the handling of the scaffolding element is carried out using a hoist (not shown) requiring the use of a sling to suspend the scaffolding element to this apparatus.
  • a hoist not shown
  • the device 10 has been shown for making the detachable connection of the scaffolding element to be handled on the lifting sling.
  • This device 10 thus forms a hooking accessory for attachment and quick release of the scaffolding element to the sling, while ensuring the handling of the scaffolding element safely.
  • the structure of the device 10 will now be described with reference to Figures 1 and 2 .
  • the device 10 is constituted by a metal rod 11, for example made of stainless steel.
  • the rod 11 is preferably of circular section, having a diameter of at least 5 mm, preferably between 5 and 12 mm and advantageously substantially equal to 8 mm.
  • the diameter of the rod must offer a very good compromise between strength and robustness of the rod and ability of the rod to be engaged in an existing orifice of the scaffolding element to be handled, such as a keyway for example, as will be explained in more detail below.
  • the rod 11 has a rectilinear elongate portion which extends along an axis X.
  • a first end portion 11a of the rod 11 is bent to form a loop 12, preferably closed, arranged in a perpendicular plane at a plane normal to the X axis of the rod 11.
  • This loop 12 extends in a plane perpendicular to a plane normal to the axis X of the rod 11, from its base 12a through which the curved end portion 11a is connected to the right portion of the rod 11, to its end 12b, which preferably comes opposite and substantially in contact with the right portion of the rod 11, so as to close the loop 12.
  • the loop 12 thus forms an internal hooking space, allowing easy cooperation for example with a hook, for connecting the first curved end portion 11a of the attachment accessory 10 to a lifting sling provided with such a hook.
  • the rod 11 forming attachment accessory 10 has a second curved end portion 11b, by which the scaffolding element to be handled is intended.
  • This second curved end portion 11b forms a single helical turn 13, which winds around an axis Y extending in a direction substantially parallel to the plane normal to the X axis of the stem.
  • the axis X of the rod 11 makes it possible to define, on the one hand, a radial direction, which extends from the axis X of the rod 11 towards all the points considered, in the plane normal to the axis of the rod and, secondly, an orthoradial direction perpendicular to the radial direction and extending in the normal plane to the axis of the rod. More precisely, according to the exemplary embodiment illustrated in Figures 1 and 2 , the helical turn 13 constituting the second curved end portion 11b of the rod 11 is wound around an axis Y extending in a orthoradial direction.
  • the second bent end portion 11b of the rod forming the helical turn 13 is disposed at an angle ⁇ preferably less than or equal to 60 ° with respect to the Y axis around which the turn coils.
  • the device 10 is preferably formed in one piece, made by plastic deformation of the rod 11 to form the loop 12 and the coil helical 13 at each of the two respective end portions 11a and 11b of the rod 11.
  • the dimensioning of the device 10 must allow it to be able to withstand a maximum payload of at least 50 kg, which corresponds to the maximum load that can support the structure of the device without the appearance of permanent deformations.
  • a scaffolding element 20 type of diocese or moise, for the purpose of handling this element by a hoist provided with a sling.
  • a scaffolding element 20 is conventionally provided with a keyway 21 at each of its ends.
  • a scaffolding system conventionally consists of a set of modular scaffolding elements assembled together by keying. It comprises on the one hand, stackable amounts by interlocking with disks having slots and, on the other hand, connecting elements (meshes) and stiffening (diagonals), provided at each end with keyed connectors intended for s to hang on the disks and in which are formed the keyways.
  • the key housing 21 fitted to the scaffolding element 20 advantageously constitutes an orifice through which the free end 13b of the turn 13 formed at the second curved end 11b of the device 10 can be engaged and hence the turn 13 itself. even by a suitable rotation of the device 10.
  • the figure 3A illustrates the device 10 positioned with the axis X of the substantially vertical rod, the loop 12 being in the up position and the turn 13 in the lower position, relative to each other, before the engagement of the turn 13 through the keyway 21.
  • the free end 13b of the turn 13 is engaged through the keyway 21 and the device 10 is made a half-turn with a first direction of rotation R following the axis of the turn 13 to begin to engage the turn 13 in the keyway 21, the loop 12 then being in the lower position relative to the turn 13, as shown in FIG. figure 3B .
  • the rotation of the device 10 is continued in the first direction of rotation R until the turn 13 is fully engaged through the keyway 21, the loop 12 then being again in the up position relative to the turn 13 , as shown in the figure 3C .
  • the device 10 is rotated 360 ° in the first direction of rotation R to engage with the scaffolding element 20.
  • the separation of the device 10 from the scaffolding element 20 requires disengaging the helical turn 13 from the keyway 21, which involves subjecting the device 10 to a rotation of 360 ° according to the curvature of the turn in a second direction of rotation opposite the first direction of rotation R, so as to completely disengage the turn of the keyway 21.
  • a conventional scaffolding system still includes elements of type floors and plinths openwork.
  • the openings formed on these scaffold elements of skirting type or floors advantageously constitute the orifices through which the turn 13 formed at the second curved end 11b of the device 10 can be engaged for the connection of the device 10 with the scaffolding element , following the same principles as explained above with reference to the example of use of the device for hooking the elements of the type months or diagonals.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Movable Scaffolding (AREA)

Abstract

L'invention concerne un dispositif (10) pour réaliser la liaison amovible d'au moins un élément d'échafaudage (20) à manutentionner sur une élingue de levage, caractérisé en ce qu'il comprend une tige (11) comportant une première partie d'extrémité recourbée (11a) formant une boucle (12) disposée dans un plan perpendiculaire à un plan normal à l'axe (X) de la tige et une seconde partie d'extrémité recourbée (11b) formant une spire hélicoïdale (13) s'enroulant autour d'un axe (Y) s'étendant dans une direction sensiblement parallèle au plan normal à l'axe de la tige, de manière que ladite spire (13) est adaptée pour être engagée au travers d'un orifice (21) ménagé dans l'élément d'échafaudage (20) par rotation du dispositif dans un premier sens de rotation (R) suivant l'axe de la spire (Y).

Figure imgaf001
The invention relates to a device (10) for making the detachable connection of at least one scaffolding element (20) to be handled on a lifting sling, characterized in that it comprises a rod (11) comprising a first part curved end (11a) forming a loop (12) disposed in a plane perpendicular to a plane normal to the axis (X) of the rod and a second curved end portion (11b) forming a helical turn (13) wrapping around an axis (Y) extending in a direction substantially parallel to the plane normal to the axis of the rod, so that said turn (13) is adapted to be engaged through an orifice ( 21) formed in the scaffolding element (20) by rotation of the device in a first direction of rotation (R) along the axis of the turn (Y).
Figure imgaf001

Description

L'invention concerne un dispositif pour réaliser la liaison amovible d'au moins un élément d'échafaudage à manutentionner sur une élingue de levage.The invention relates to a device for making the removable connection of at least one scaffolding element to be handled on a lifting sling.

Dans le domaine de l'échafaudage, il est courant d'avoir à assurer la liaison entre des éléments d'échafaudage et un appareil de levage permettant la manutention de ces éléments d'échafaudage et, notamment, leur levage en vue de leur assemblage à des éléments d'échafaudage déjà montés, ou leur dépose lors d'opérations de démontage d'un échafaudage.In the field of scaffolding, it is common to have to ensure the connection between scaffolding elements and a hoist for handling these scaffolding elements and, in particular, their lifting for their assembly to already assembled scaffolding elements, or removing them during dismantling operations of a scaffolding.

La manutention d'un élément d'échafaudage par un appareil de levage quelconque, de type treuil par exemple, nécessite d'interposer entre cet appareil de levage et l'élément d'échafaudage, une élingue de levage, constituée par un lien flexible adapté, par exemple en cordage, généralement terminé par un élément métallique tel qu'un crochet. La manutention au moyen de l'appareil de levage implique en particulier de pouvoir accrocher le ou les éléments d'échafaudage à manutentionner à l'élingue de levage.The handling of a scaffolding element by any lifting device, such as a winch for example, requires interposing between this lifting device and the scaffolding element, a lifting sling, constituted by a suitable flexible link for example in rope, generally terminated by a metal element such as a hook. Handling by means of the hoist means in particular to be able to hang the scaffolding element (s) to be handled by the lifting sling.

Actuellement, l'accrochage des éléments d'échafaudage au cordage constituant l'élingue de levage, s'effectue au moyen du cordage lui-même, en l'amarrant aux éléments d'échafaudage à manutentionner. Par exemple, avant d'effectuer la manutention, les échafaudeurs viennent enrouler la partie du cordage s'étendant depuis l'extrémité terminée par le crochet autour du ou des éléments d'échafaudage à manutentionner, puis viennent fixer la partie de cordage ainsi enroulée sur les éléments d'échafaudage au moyen d'un ou plusieurs noeuds appropriés. Puis, lorsque la manutention est terminée (levage ou dépose), il faut défaire les noeuds et libérer la partie du cordage enroulée autour du ou des éléments d'échafaudage.Currently, the attachment of the scaffolding elements to the rope constituting the lifting sling, is performed by means of the rope itself, by mooring scaffold elements to handle. For example, before carrying out the handling, the scaffolders wind up the part of the rope extending from the end terminated by the hook around the scaffolding element or elements to be handled, and then fix the portion of rope thus wound on the scaffolding elements by means of one or more appropriate nodes. Then, when handling is complete (lifting or removal), it is necessary to undo the knots and release the part of the rope wrapped around the scaffolding element (s).

Il en résulte tout d'abord une perte de temps, qui n'est généralement pas souhaitable et qui peut devenir pénalisante si de nombreuses manutentions consécutives doivent être effectuées.This results first of all in a waste of time, which is generally not desirable and which can become penalizing if many consecutive operations have to be carried out.

En outre, ce principe d'accrochage ne permet pas de manutentionner les éléments d'échafaudage de façon complètement sécurisée.In addition, this attachment principle does not allow to handle scaffolding elements completely secure.

L'invention a précisément pour but de remédier à ces inconvénients, en proposant un dispositif d'accrochage d'un type nouveau, au moyen duquel un ou plusieurs éléments d'échafaudage à manutentionner peuvent être accrochée directement à l'extrémité d'une élingue de levage avant leur manutention, puis décrochée après leur manutention, de façon particulièrement aisée et rapide, sans pour autant que la sécurité de la manutention s'en trouve pénalisée.The purpose of the invention is precisely to remedy these drawbacks by proposing a new type of attachment device by means of which one or more scaffolding elements to be handled can be hooked directly to the end of a lifting sling before handling, then unhooked after handling, particularly easy and fast, without the security of handling is penalized.

A cet effet, l'invention concerne un dispositif pour réaliser la liaison amovible d'au moins un élément d'échafaudage à manutentionner sur une élingue de levage, caractérisé en ce qu'il comprend une tige comportant une première partie d'extrémité recourbée formant une boucle disposée dans un plan perpendiculaire à un plan normal à l'axe de la tige et une seconde partie d'extrémité recourbée formant une unique spire hélicoïdale s'enroulant autour d'un axe s'étendant dans une direction sensiblement parallèle au plan normal à l'axe de la tige, de manière que ladite spire est adaptée pour être engagée au travers d'un orifice ménagé dans l'élément d'échafaudage par rotation du dispositif dans un premier sens de rotation suivant l'axe de la spire.To this end, the invention relates to a device for making the removable connection of at least one scaffolding element to be handled on a lifting sling, characterized in that it comprises a rod comprising a first curved end portion forming a loop disposed in a plane perpendicular to a plane normal to the axis of the rod and a second curved end portion forming a single helical coil winding about an axis extending in a direction substantially parallel to the normal plane to the axis of the rod, so that said turn is adapted to be engaged through an orifice in the scaffolding element by rotation of the device in a first direction of rotation along the axis of the turn.

Grâce à cet agencement, le dispositif de l'invention constitue un accessoire d'accrochage aisément manipulable, destiné à s'interposer entre l'élingue de levage et l'élément d'échafaudage à manutentionner. Il est particulièrement remarquable en ce que la première partie d'extrémité de la tige en forme de boucle permet de délimiter un espace intérieur de crochetage, permettant d'assurer de façon simple et rapide une liaison sûre avec l'élingue de levage, en engageant par exemple un crochet terminant l'élingue dans l'espace de crochetage délimité par la boucle, et en ce que la seconde partie d'extrémité de la tige formant une unique spire hélicoïdale qui s'enroule autour d'un axe qui s'étend dans une direction sensiblement parallèle au plan normal à l'axe de la tige, permet d'assurer de façon simple et rapide une liaison sûre avec l'élément d'échafaudage, en engageant cette spire hélicoïdale dans un orifice existant de l'élément d'échafaudage par rotation en suivant la courbure de la spire dans un premier sens de rotation suivant l'axe de la spire jusqu'à ce que la spire soit totalement engagée au travers l'orifice en question.Thanks to this arrangement, the device of the invention is an easily manipulable attachment accessory, intended to be interposed between the lifting sling and the scaffolding element to be handled. It is particularly remarkable in that the first end portion of the loop-shaped shank delimits an internal hook-in space, making it possible to ensure a safe and easy connection with the lifting sling by engaging for example a hook ending the sling in the hooking space delimited by the loop, and in that the second end portion of the rod forming a single helical turn which wraps around an axis which extends in a direction substantially parallel to the plane normal to the axis of the rod, ensures a simple and fast way a secure connection with the scaffolding element, by engaging this spiral coil in an existing orifice of the element d scaffolding by rotation following the curvature of the turn in a first direction of rotation along the axis of the turn until the turn is fully engaged through the orifice in question.

Autrement dit, selon l'invention, la seconde partie d'extrémité de la tige est disposée en faisant un seul tour autour d'un axe qui s'étend dans une direction parallèle au plan normal à l'axe de la tige de façon à former une unique spire hélicoïdale. Celle-ci s'étend donc suivant un mouvement de rotation et de translation autour de son axe, et l'axe de cette spire hélicoïdale est prévu pour être dans un plan parallèle au plan normal de la tige. Cette configuration de la seconde partie d'extrémité de la tige permet à celle-ci d'être engagée aisément et rapidement au travers d'un orifice ménagé dans l'élément d'échafaudage par un simple mouvement de rotation en suivant la courbure de la spire. L'accrochage entre le dispositif de l'invention et l'élément d'échafaudage est ainsi convenablement verrouillé et le levage (ou la dépose) peut se faire en toute sécurité. En effet, la sécurité est renforcée par le fait que la désolidarisation du dispositif de l'invention d'avec l'élément d'échafaudage nécessite de désengager la partie d'extrémité de la tige formant l'unique spire hélicoïdale de l'orifice de l'élément d'échafaudage, ce qui n'est rendu possible que par une intervention de l'échafaudeur, par rotation suivant la courbure de la spire dans un deuxième sens de rotation opposé à celui permettant l'engagement de la spire au travers de l'orifice. En outre, la formation de l'unique spire hélicoïdale dans une direction sensiblement parallèle à un plan normal à l'axe de la tige facilite la manipulation du dispositif lors des opérations d'engagement et de désengagement de la spire hélicoïdale au travers de l'orifice de l'élément d'échafaudage. L'accrochage et le décrochage du dispositif de l'invention avec l'élément d'échafaudage à manutentionner nécessite avantageusement une seule rotation autour d'un axe de pivotement constitué par l'axe autour duquel s'enroule l'unique spire hélicoïdale.In other words, according to the invention, the second end portion of the rod is arranged by making a single turn around an axis which extends in a direction parallel to the plane normal to the axis of the rod so as to form a single helical turn. It therefore extends in a rotational and translational movement about its axis, and the axis of this helical turn is intended to be in a plane parallel to the normal plane of the stem. This configuration of the second end portion of the rod allows it to be easily and quickly engaged through a hole in the scaffolding element by a simple rotational movement following the curvature of the rod. turn. The hooking between the device of the invention and the scaffolding element is thus properly locked and lifting (or removal) can be done safely. Indeed, the security is reinforced by the fact that the separation of the device of the invention from the scaffolding element requires disengaging the end portion of the rod forming the single helical turn of the orifice of the scaffolding element, which is made possible only by intervention of the scaffolder, by rotation along the curvature of the coil in a second direction of rotation opposite to that allowing the engagement of the coil through the orifice. In addition, the formation of the single helical turn in a direction substantially parallel to a plane normal to the axis of the rod facilitates the handling of the device during the engagement and disengagement operations of the helical turn through the orifice of the scaffolding element. The hooking and unhitching of the device of the invention with the scaffolding element to be handled advantageously requires a single rotation about a pivot axis constituted by the axis around which the single helical turn is wound.

Avantageusement, la spire hélicoïdale s'enroule autour d'un axe s'étendant selon une direction orthoradiale par rapport à l'axe de la tige.Advantageously, the helical turn wraps around an axis extending in a direction orthoradial with respect to the axis of the rod.

Avantageusement encore, la spire présente une extrémité libre sensiblement rectiligne orientée en direction de l'axe de la tige.Advantageously, the coil has a substantially straight free end oriented towards the axis of the rod.

De préférence, la spire est enroulée avec un angle inférieur ou égal à 60° par rapport à l'axe autour duquel elle s'enroule.Preferably, the turn is wound at an angle less than or equal to 60 ° with respect to the axis around which it winds.

Ces différentes dispositions permettent de favoriser davantage l'engagement et le désengagement de la partie d'extrémité de la tige formant la spire hélicoïdale dans l'orifice de l'élément d'échafaudage.These different arrangements make it possible to further promote the engagement and disengagement of the end portion of the rod forming the helical turn in the orifice of the scaffolding element.

De préférence, l'axe de la boucle et l'axe de la spire hélicoïdale s'étendent parallèlement entre eux dans une même direction.Preferably, the axis of the loop and the axis of the helical turn extend parallel to each other in the same direction.

Avantageusement, le dispositif est réalisé d'une seule pièce.Advantageously, the device is made in one piece.

De préférence, le dispositif est réalisé en un matériau métallique ou en un matériau composite.Preferably, the device is made of a metallic material or a composite material.

D'autres caractéristiques et avantages de l'invention ressortiront clairement de la description qui en est faite ci-après d'un mode de réalisation particulier de l'invention présenté à titre indicatif et nullement limitatif, en référence aux dessins annexés, dans lesquels:

  • les figures 1 et 2 sont des vues schématiques de face et de côté du dispositif selon l'invention ;
  • les figures 3A-3C illustrent un exemple d'accrochage du dispositif de l'invention avec un élément d'échafaudage de type moise ou diagonale, pourvu à son extrémité d'un logement de clavette.
Other features and advantages of the invention will emerge clearly from the description which is given below of a particular embodiment of the invention presented by way of indication and in no way limiting, with reference to the appended drawings, in which:
  • the Figures 1 and 2 are schematic front and side views of the device according to the invention;
  • the Figures 3A-3C illustrate an example of attachment of the device of the invention with a scaffold element type moise or diagonal, provided at its end with a keyway housing.

Dans la présente description, par sensiblement parallèle ou perpendiculaire, on entend une direction/un angle s'écartant d'au plus ±20°, voire d'au plus 10° ou d'au plus 5° d'une direction parallèle ou perpendiculaire.In the present description, by substantially parallel or perpendicular means a direction / an angle deviating from at most ± 20 °, or even at most 10 ° or at most 5 ° of a parallel or perpendicular direction .

Comme on l'a déjà mentionné, l'invention concerne plus précisément le cas où la manutention de l'élément d'échafaudage est effectuée à l'aide d'un appareil de levage (non représenté) nécessitant l'emploi d'une élingue pour suspendre l'élément d'échafaudage à cet appareil. Sur les figures 1 et 2, on a seulement représenté le dispositif 10 pour réaliser la liaison amovible de l'élément d'échafaudage à manutentionner sur l'élingue de levage. Ce dispositif 10 forme donc un accessoire d'accrochage permettant un accrochage et un décrochage rapide de l'élément d'échafaudage à l'élingue, tout en assurant la manutention de l'élément d'échafaudage en toute sécurité. La structure du dispositif 10 va à présent être décrite en référence aux figures 1 et 2.As already mentioned, the invention relates more specifically to the case where the handling of the scaffolding element is carried out using a hoist (not shown) requiring the use of a sling to suspend the scaffolding element to this apparatus. On the Figures 1 and 2 only the device 10 has been shown for making the detachable connection of the scaffolding element to be handled on the lifting sling. This device 10 thus forms a hooking accessory for attachment and quick release of the scaffolding element to the sling, while ensuring the handling of the scaffolding element safely. The structure of the device 10 will now be described with reference to Figures 1 and 2 .

Le dispositif 10 est constitué par une tige 11 métallique, par exemple réalisée en acier inoxydable. La tige 11 est de section circulaire préférentiellement, présentant un diamètre au moins égal à 5 mm, de préférence compris entre 5 et 12 mm et avantageusement sensiblement égal à 8mm. Le diamètre de la tige doit offrir un très bon compromis entre résistance et robustesse de la tige et capacité de la tige à être engagée dans un orifice existant de l'élément d'échafaudage à manutentionner, tel qu'un logement de clavette par exemple, comme il sera expliqué plus en détail ci-après.The device 10 is constituted by a metal rod 11, for example made of stainless steel. The rod 11 is preferably of circular section, having a diameter of at least 5 mm, preferably between 5 and 12 mm and advantageously substantially equal to 8 mm. The diameter of the rod must offer a very good compromise between strength and robustness of the rod and ability of the rod to be engaged in an existing orifice of the scaffolding element to be handled, such as a keyway for example, as will be explained in more detail below.

La tige 11 présente une partie allongée rectiligne qui s'étend le long d'un axe X. Une première partie d'extrémité 11 a de la tige 11 est recourbée de manière à former une boucle 12, préférentiellement fermée, disposée dans un plan perpendiculaire à un plan normal à l'axe X de la tige 11. Cette boucle 12 s'étend ainsi dans un plan perpendiculaire à un plan normal à l'axe X de la tige 11, depuis sa base 12a par laquelle la partie d'extrémité recourbée 11 a est raccordée sur la partie droite de la tige 11, jusqu'à son extrémité 12b, qui vient de préférence en regard et sensiblement au contact de la partie droite de la tige 11, de façon à fermer la boucle 12. La boucle 12 forme ainsi un espace intérieur de crochetage, permettant une coopération aisée par exemple avec un crochet, pour la liaison de la première partie d'extrémité recourbée 11a de l'accessoire d'accrochage 10 à une élingue de levage munie d'un tel crochet.The rod 11 has a rectilinear elongate portion which extends along an axis X. A first end portion 11a of the rod 11 is bent to form a loop 12, preferably closed, arranged in a perpendicular plane at a plane normal to the X axis of the rod 11. This loop 12 extends in a plane perpendicular to a plane normal to the axis X of the rod 11, from its base 12a through which the curved end portion 11a is connected to the right portion of the rod 11, to its end 12b, which preferably comes opposite and substantially in contact with the right portion of the rod 11, so as to close the loop 12. The loop 12 thus forms an internal hooking space, allowing easy cooperation for example with a hook, for connecting the first curved end portion 11a of the attachment accessory 10 to a lifting sling provided with such a hook.

A son autre extrémité, opposée à la première partie d'extrémité recourbée 11 a, la tige 11 formant accessoire d'accrochage 10, comporte une seconde partie d'extrémité recourbée 11 b, par laquelle l'élément d'échafaudage à manutentionner est destiné à être fixé sur l'accessoire d'accrochage 10. Cette seconde partie d'extrémité recourbée 11 b forme une unique spire hélicoïdale 13, qui s'enroule autour d'un axe Y s'étendant dans une direction sensiblement parallèle au plan normal à l'axe X de la tige.At its other end, opposite to the first bent end portion 11a, the rod 11 forming attachment accessory 10, has a second curved end portion 11b, by which the scaffolding element to be handled is intended This second curved end portion 11b forms a single helical turn 13, which winds around an axis Y extending in a direction substantially parallel to the plane normal to the X axis of the stem.

Il est à noter que l'axe X de la tige 11 permet de définir, d'une part une direction radiale, qui s'étend depuis l'axe X de la tige 11 vers tous points considérés, dans le plan normal à l'axe de la tige et, d'autre part, une direction orthoradiale, perpendiculaire à la direction radiale et s'étendant dans le plan normal à l'axe de la tige. Plus précisément, selon l'exemple de réalisation illustré aux figures 1 et 2, la spire hélicoïdale 13 constituant la seconde partie d'extrémité recourbée 11 b de la tige 11 est enroulée autour d'un axe Y s'étendant selon une direction orthoradiale.It should be noted that the axis X of the rod 11 makes it possible to define, on the one hand, a radial direction, which extends from the axis X of the rod 11 towards all the points considered, in the plane normal to the axis of the rod and, secondly, an orthoradial direction perpendicular to the radial direction and extending in the normal plane to the axis of the rod. More precisely, according to the exemplary embodiment illustrated in Figures 1 and 2 , the helical turn 13 constituting the second curved end portion 11b of the rod 11 is wound around an axis Y extending in a orthoradial direction.

Cette spire hélicoïdale 13, formée d'un seul tour, s'enroule ainsi autour de l'axe Y, depuis sa base 13a par laquelle la spire est raccordée sur la partie droite de la tige 11, jusqu'à son extrémité 13b, qui constitue une extrémité libre de la spire, sensiblement rectiligne et orientée en direction de l'axe de la tige 11.This helical turn 13, formed of a single turn, thus wraps around the axis Y, from its base 13a through which the turn is connected to the right part of the rod 11, to its end 13b, which constitutes a free end of the turn, substantially rectilinear and oriented in the direction of the axis of the rod 11.

Par ailleurs, la seconde partie d'extrémité recourbée 11 b de la tige formant la spire hélicoïdale 13 est disposée selon un angle α de préférence inférieur ou égal à 60° par rapport à l'axe Y autour duquel s'enroule la spire.Furthermore, the second bent end portion 11b of the rod forming the helical turn 13 is disposed at an angle α preferably less than or equal to 60 ° with respect to the Y axis around which the turn coils.

Le dispositif 10 est préférentiellement formé d'une seule pièce, réalisée par déformation plastique de la tige 11 pour former la boucle 12 et la spire hélicoïdale 13 au niveau de chacune des deux parties d'extrémité respectives 11a et 11 b de la tige 11.The device 10 is preferably formed in one piece, made by plastic deformation of the rod 11 to form the loop 12 and the coil helical 13 at each of the two respective end portions 11a and 11b of the rod 11.

Le dimensionnement du dispositif 10 doit lui permettre de pouvoir supporter une charge maximale utile au moins égale à 50 kg, qui correspond à la charge maximale que peut supporter la structure du dispositif sans qu'il n'y ait apparition de déformations permanentes.The dimensioning of the device 10 must allow it to be able to withstand a maximum payload of at least 50 kg, which corresponds to the maximum load that can support the structure of the device without the appearance of permanent deformations.

On va maintenant décrire, en référence aux figures 3A-3C, un exemple d'utilisation du dispositif 10 de l'invention pour sa liaison avec un élément d'échafaudage 20 de type moise ou diagonale, en vue de la manutention de cet élément par un appareil de levage muni d'une élingue. Un tel élément d'échafaudage 20 est classiquement pourvu d'un logement de clavette 21 à chacune de ses extrémités. En effet, un système d'échafaudage est classiquement constitué d'un ensemble d'éléments d'échafaudage modulaires, assemblés entre eux par clavetage. Il comprend d'une part, des montants superposables par emboîtement avec des disques comportant des fentes et, d'autre part, des éléments de liaison (moises) et de raidissement (diagonales), munis à chaque extrémité de raccords à clavette destinés à s'accrocher sur les disques et dans lesquels sont formés les logements de clavettes.We will now describe, with reference to Figures 3A-3C , an example of use of the device 10 of the invention for its connection with a scaffolding element 20 type of diocese or moise, for the purpose of handling this element by a hoist provided with a sling. Such a scaffolding element 20 is conventionally provided with a keyway 21 at each of its ends. Indeed, a scaffolding system conventionally consists of a set of modular scaffolding elements assembled together by keying. It comprises on the one hand, stackable amounts by interlocking with disks having slots and, on the other hand, connecting elements (meshes) and stiffening (diagonals), provided at each end with keyed connectors intended for s to hang on the disks and in which are formed the keyways.

Le logement de clavette 21 équipant l'élément d'échafaudage 20 constitue avantageusement un orifice par lequel l'extrémité libre 13b de la spire 13 formée à la seconde extrémité recourbée 11 b du dispositif 10 peut être engagée et partant, la spire 13 elle-même par une rotation appropriée du dispositif 10. La figure 3A illustre le dispositif 10 positionné avec l'axe X de la tige sensiblement vertical, la boucle 12 étant en position haute et la spire 13 en position basse, relativement l'une par rapport à l'autre, avant l'engagement de la spire 13 au travers du logement de clavette 21. A partir de cette position, on engage l'extrémité libre 13b de la spire 13 à travers le logement de clavette 21 et on fait réaliser un demi-tour au dispositif 10 un premier sens de rotation R suivant l'axe de la spire 13 pour commencer d'engager la spire 13 dans le logement de clavette 21, la boucle 12 se retrouvant alors en position basse, relativement à la spire 13, comme illustré à la figure 3B. On poursuit la rotation du dispositif 10 selon le premier sens de rotation R jusqu'à ce que la spire 13 soit totalement engagée au travers du logement de clavette 21, la boucle 12 se retrouvant alors à nouveau en position haute, relativement à la spire 13, comme illustré à la figure 3C. Autrement dit, le dispositif 10 subit une rotation de 360° selon le premier sens de rotation R pour réaliser l'accrochage avec l'élément d'échafaudage 20. La désolidarisation du dispositif 10 d'avec l'élément d'échafaudage 20 nécessite de désengager la spire hélicoïdale 13 du logement de clavette 21, ce qui implique de faire subir au dispositif 10 une rotation de 360° suivant la courbure de la spire dans un deuxième sens de rotation opposé au premier sens de rotation R, de manière à désengager complètement la spire du logement de clavette 21.The key housing 21 fitted to the scaffolding element 20 advantageously constitutes an orifice through which the free end 13b of the turn 13 formed at the second curved end 11b of the device 10 can be engaged and hence the turn 13 itself. even by a suitable rotation of the device 10. The figure 3A illustrates the device 10 positioned with the axis X of the substantially vertical rod, the loop 12 being in the up position and the turn 13 in the lower position, relative to each other, before the engagement of the turn 13 through the keyway 21. From this position, the free end 13b of the turn 13 is engaged through the keyway 21 and the device 10 is made a half-turn with a first direction of rotation R following the axis of the turn 13 to begin to engage the turn 13 in the keyway 21, the loop 12 then being in the lower position relative to the turn 13, as shown in FIG. figure 3B . The rotation of the device 10 is continued in the first direction of rotation R until the turn 13 is fully engaged through the keyway 21, the loop 12 then being again in the up position relative to the turn 13 , as shown in the figure 3C . In other words, the device 10 is rotated 360 ° in the first direction of rotation R to engage with the scaffolding element 20. The separation of the device 10 from the scaffolding element 20 requires disengaging the helical turn 13 from the keyway 21, which involves subjecting the device 10 to a rotation of 360 ° according to the curvature of the turn in a second direction of rotation opposite the first direction of rotation R, so as to completely disengage the turn of the keyway 21.

Un système d'échafaudage classique comporte encore des éléments de de type planchers et plinthes ajourés. Les ajours formés sur ces éléments d'échafaudage de type plinthes ou planchers constituent avantageusement les orifices par lesquels la spire 13 formée à la seconde extrémité recourbée 11 b du dispositif 10 peut être engagée pour la liaison du dispositif 10 avec l'élément d'échafaudage, suivant les mêmes principes qu'exposés précédemment en référence à l'exemple d'utilisation du dispositif pour l'accrochage des éléments de type moises ou diagonales.A conventional scaffolding system still includes elements of type floors and plinths openwork. The openings formed on these scaffold elements of skirting type or floors advantageously constitute the orifices through which the turn 13 formed at the second curved end 11b of the device 10 can be engaged for the connection of the device 10 with the scaffolding element , following the same principles as explained above with reference to the example of use of the device for hooking the elements of the type months or diagonals.

Claims (8)

Dispositif (10) pour réaliser la liaison amovible d'au moins un élément d'échafaudage (20) à manutentionner sur une élingue de levage, caractérisé en ce qu'il comprend une tige (11) comportant une première partie d'extrémité recourbée (11 a) formant une boucle (12) disposée dans un plan perpendiculaire à un plan normal à l'axe (X) de la tige et une seconde partie d'extrémité recourbée (11b) formant une unique spire hélicoïdale (13) s'enroulant autour d'un axe (Y) s'étendant dans une direction sensiblement parallèle au plan normal à l'axe de la tige, de manière que ladite spire (13) est adaptée pour être engagée au travers d'un orifice (21) ménagé dans l'élément d'échafaudage (20) par rotation du dispositif dans un premier sens de rotation (R) suivant l'axe de la spire (Y).Device (10) for releasably connecting at least one scaffolding element (20) to be handled on a lifting sling, characterized in that it comprises a rod (11) having a first curved end portion ( 11a) forming a loop (12) disposed in a plane perpendicular to a plane normal to the axis (X) of the rod and a second curved end portion (11b) forming a single helical coil (13) winding around an axis (Y) extending in a direction substantially parallel to the plane normal to the axis of the rod, so that said turn (13) is adapted to be engaged through a hole (21) arranged in the scaffolding element (20) by rotation of the device in a first direction of rotation (R) along the axis of the turn (Y). Dispositif selon la revendication 1, caractérisé en ce que la spire hélicoïdale (13) s'enroule autour d'un axe (Y) s'étendant selon une direction orthoradiale par rapport à l'axe (X) de la tige.Device according to claim 1, characterized in that the helical turn (13) wraps around an axis (Y) extending in a direction orthoradial with respect to the axis (X) of the rod. Dispositif selon la revendication 1 ou 2, caractérisé en ce que la spire hélicoïdale (13) présente une extrémité libre (13b) sensiblement rectiligne orientée en direction de l'axe (X) de la tige.Device according to claim 1 or 2, characterized in that the helical coil (13) has a substantially rectilinear free end (13b) oriented towards the axis (X) of the rod. Dispositif selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la spire hélicoïdale (13) est enroulée avec un angle inférieur ou égal à 60° par rapport à l'axe (Y) autour duquel elle s'enroule.Device according to any one of claims 1 to 3, characterized in that the helical coil (13) is wound at an angle less than or equal to 60 ° with respect to the axis (Y) around which it winds. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la boucle (12) est fermée.Device according to any one of the preceding claims, characterized in that the loop (12) is closed. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que l'axe de la boucle et l'axe de la spire hélicoïdale s'étendent parallèlement entre eux dans une même direction.Device according to any one of the preceding claims, characterized in that the axis of the loop and the axis of the helical coil extend parallel to each other in the same direction. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il est réalisé d'une seule pièce.Device according to any one of the preceding claims, characterized in that it is made in one piece. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il est réalisé en un matériau métallique ou en un matériau composite.Device according to any one of the preceding claims, characterized in that it is made of a metallic material or a composite material.
EP18305012.9A 2017-01-10 2018-01-09 Hanging device for scaffolding elements to be handled Withdrawn EP3346161A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1750205A FR3061703B1 (en) 2017-01-10 2017-01-10 HANGING DEVICE FOR SCAFFOLDING ELEMENTS TO BE HANDLED.

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EP3346161A1 true EP3346161A1 (en) 2018-07-11

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49108210U (en) * 1972-12-31 1974-09-17
JPS57150612U (en) * 1981-03-18 1982-09-21
JPS6263275U (en) * 1985-10-05 1987-04-20
JPH11166522A (en) * 1997-12-08 1999-06-22 Kanto Special Steel Works Ltd Fastener

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49108210U (en) * 1972-12-31 1974-09-17
JPS57150612U (en) * 1981-03-18 1982-09-21
JPS6263275U (en) * 1985-10-05 1987-04-20
JPH11166522A (en) * 1997-12-08 1999-06-22 Kanto Special Steel Works Ltd Fastener

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FR3061703A1 (en) 2018-07-13

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