EP3401463B9 - Connecting device for a moulding table - Google Patents

Connecting device for a moulding table Download PDF

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Publication number
EP3401463B9
EP3401463B9 EP18170952.8A EP18170952A EP3401463B9 EP 3401463 B9 EP3401463 B9 EP 3401463B9 EP 18170952 A EP18170952 A EP 18170952A EP 3401463 B9 EP3401463 B9 EP 3401463B9
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EP
European Patent Office
Prior art keywords
plug
pivot pin
connecting device
oblong slot
housing
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.)
Active
Application number
EP18170952.8A
Other languages
German (de)
French (fr)
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EP3401463A1 (en
EP3401463B1 (en
Inventor
Pascal Perrotin
Sébastien Philippe
Cédric POINARD
Alexandre Souvignet
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.)
Universite Savoie Mont Blanc
Alphi SAS
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Universite Savoie Mont Blanc
Alphi SAS
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Publication of EP3401463A1 publication Critical patent/EP3401463A1/en
Publication of EP3401463B1 publication Critical patent/EP3401463B1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
    • E04G11/48—Supporting structures for shutterings or frames for floors or roofs
    • E04G11/483—Supporting heads
    • 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
    • E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
    • E04G13/06—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for stairs, steps, cornices, balconies, or other parts corbelled out of the wall
    • E04G13/066—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for stairs, steps, cornices, balconies, or other parts corbelled out of the wall for overhangs
    • 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
    • E04G25/00—Shores or struts; Chocks
    • E04G2025/006—Heads therefor, e.g. pivotable

Definitions

  • the present invention relates to the field of formwork construction, and more particularly relates to a connecting device for connecting a supporting forestay to a formwork structure defining a formwork plane.
  • a formwork assembly comprising a formwork structure defining a formwork plane, said formwork structure being pivotally connected to at least one supporting forestay by means of a connecting device.
  • a formwork assembly is sometimes called a "formwork table” or “formwork table”.
  • the second part is movable relative to the first part between at least one insertion position, in which the insertion section is received by fitting into the insertion housing, the first and second directions being parallel to one another. 'other, and a retracting position, in which the insertion section is pivoted so that the second direction is angularly away from the first direction.
  • the retracting position makes it possible to significantly reduce the size of the formwork assembly to facilitate handling, in particular when said formwork assembly must be removed by means of a crane after formwork of a balcony of a upper floor by vertical support on the balcony of a lower floor, which balcony on the lower floor is provided with a safety barrier to limit the risk of operators falling.
  • the security barrier constitutes an obstacle from which the props must escape.
  • connection device in particular with a quarter-turn movement of the support prop around its longitudinal axis to lock / unlock the connection device.
  • this hook which adds to the complexity and the cost of the connection device.
  • This hook is also difficult to maneuver by an operator because of its distant and inaccessible position, as well as because of the weight of the prop stay which induces a strong resistance against the operation of the hook. This makes it necessary to use two hands of the operator, or even two different operators working simultaneously to release the prop.
  • this hook constitutes a member which can easily be damaged by an impact, so that the reliability is not satisfactory.
  • a problem proposed by the present invention is to design a simple, inexpensive and reliable connection device, making it possible to quickly and easily move a support stay between at least one insertion position and one retraction position.
  • connection device according to claim 1.
  • Such a connecting device has a very simple and resistant structure. No additional member is used such as a hook to hold the second part in the retracted position. Only the gravity and the geometry of the first and second parts are used. A single operator acting with one hand is enough to move the second part (and the supporting prop which is linked to it) to the retracting position or to the withdrawing position.
  • the latter is provided with a spreading extending to away from the first direction.
  • the first and second parts can be separable from one another by withdrawal of the pivot axis out of the oblong opening. During storage and handling off site, the first and second parts can thus be separated, the first part being fixed to the formwork structure while the second part is fixed to a prop. The first and second parts are assembled quickly and easily on site.
  • the pivot axis may include a radial stud providing the pivot axis with a cross-section having at least one dimension greater than the width of the oblong opening.
  • the pivot axis must therefore be oriented relatively precisely with respect to the oblong lumen. This effectively limits the risk of handling errors which can lead to an accidental separation of the first and second parts.
  • the pivot axis can be linked inseparably to the first part.
  • the pivot axis despite the fact that it can be moved to allow separation of the first and second parts from one another, cannot therefore be lost or dropped on an operator.
  • a formwork assembly comprising a formwork structure defining a formwork plane, said formwork structure being connected to at least one supporting forestay by means of a connecting device such as previously described.
  • step a) To facilitate the movement of the prop and the second part from the retracting position to the withdrawing position, it is advantageous to provide a step, prior to step a), during which the prop is moved of support and the second part with respect to the first part by rotation about the pivot axis so as to separate the lateral surface of the second part from the lower edge of a side wall of the plug-in housing .
  • a formwork assembly 1 of the “formwork table” or “formwork table” type, comprising a formwork structure 2 defining a formwork plane P.
  • Said formwork structure 2 is connected to four support struts 3 by means of an example of connecting devices 4 according to the invention.
  • connection device 4 is more particularly visible on the figures 2 and 3 .
  • the third direction III-III is defined by a pivot axis 11 carried by the first part 5, while the plug-in section 10 has an oblong slot 12 which extends in the second direction II-II between a first end 12a and a second end 12b and which is capable of receiving the pivot axis 11.
  • the connecting device 4 appears with the first 5 and second 8 parts in an assembled state in which the pivot axis 11 passes through the oblong slot 12.
  • the second part 8 is more particularly in a so-called withdrawal position in which the plug-in section 10 is disposed outside of the plug-in housing 7, the first II and second II-II directions being parallel to each other (and even coinciding here ), and the pivot axis 11 being engaged in the oblong slot 12 at the first end 12a of the oblong slot 12 to allow the pivoting of the second part 8 around the third direction III-III defined by the pivot axis 11.
  • This same withdrawal position is illustrated on the figure 6 .
  • the lower edge 13 of the side wall 14 of the plug-in housing 7 is provided with an opening 13a extending away from the first direction I-I.
  • the lateral surface 10c of the insertion section 10 comprises a hollow housing 15 with lateral edges 15a extending substantially perpendicular to the second direction II-II.
  • the opening 13a comprises two protrusions 13b intended to penetrate into the hollow housing 15 when the second part 8 is in the retracted position ( figures 8 and 9 ).
  • the first 5 and second 8 parts are separable by withdrawal of the pivot axis 11 out of the oblong slot 12.
  • the pivot axis 11 comprises two radial pins 17 and 18 providing the pivot axis 11 two respective cross-section sections having at least one dimension L11 greater than the width L12 of the oblong opening 12 (see also figure 9 ).
  • the radial stud 17 more particularly makes it possible to limit the risks of untimely withdrawal of the pivot axis 11 out of the oblong opening 12. In fact, to do this, the stud 17 must be substantially oriented in a direction parallel to the second direction II-II.
  • the radial stud 18 makes it possible to link the pivot axis 11 inseparably to the first part 5.
  • the pivot axis 11 is slidably engaged in the third direction III-III in a hole 19 made in the first part 5.
  • Said hole 19 has a cross section (a diameter here) little greater than the diameter of l pivot axis 11 and in any event less than the width L11 of the section of the pivot axis 11 comprising the radial stud 18. The pivot axis can thus not be removed from the first part 5 more than what is depicted on the figure 2 .
  • the second part 8 is initially arranged in the plugging position ( figures 4 and 5 ), the second direction II-II then being substantially vertical (the vertical direction being defined by Earth's gravity).
  • the formwork plane P is substantially horizontal.
  • the prop 3 and the second part 8 are moved in translation from the insertion position ( figures 4 and 5 ) to the withdrawal position ( figures 3 and 6 ) by bringing the pivot axis 11 to the first end 12a of the oblong slot 12 in the second direction II-II (by a simple translational movement illustrated by the arrow 21).
  • This can be achieved by a simple shortening of the total length of the prop 3 prop, the formwork structure 2 then being held suspended by lifting means (a crane lifter for example).
  • This shortening in length combined with the effect of gravity, provides a movement of the prop 3 and the second part 8 from the insertion position ( figures 4 and 5 ) to the withdrawal position ( figures 3 and 6 ).
  • step B the prop 3 and the second part 8 are rotated in rotation relative to the first part 5 about the pivot axis 11 (according to the rotational movement illustrated by the arrow 16 on the figure 6 ) so as to bring the second direction II-II in an orientation substantially perpendicular to the first direction II.
  • this direction of rotation is chosen so as to pivot the prop 3 prop in the direction of the center of the formwork structure 2 (to avoid any protrusion of the prop 3 prop on the periphery of the formwork structure 2).
  • the prop 3 and the second part 8 are displaced in translation relative to the first part 5 by sliding the pivot axis 11 in the oblong opening 12 in the direction of the second end 12b (according to the movement illustrated by arrow 23 on the figure 7 ) until the second part 8 protrudes beyond the lower edge 13 of the side wall 14 of the plug-in housing 7 ( figure 7 ).
  • the second part 8 is made to slide until the protuberances 13b carried by the opening 13a are located in correspondence with the hollow housing 15 (substantially as on the figure 9 ).
  • step D the prop 3 and the second part 8 are moved in rotation (or left to move under the effect of gravity) relative to the first part 5 around the pivot axis 11 (according to the movement illustrated by arrow 24 on the figure 7 ) so that the second part 8 comes to bear along the lateral surface 10c against the lower edge 13 of the lateral wall 14 of the plug-in housing 7 ( figures 8 and 9 ).
  • the protuberances 13b carried by the opening 13a penetrate into the hollow housing 15 and prevent any translation of the second part 8 tending to bring the pivot axis 11 towards the first end 12a of the oblong light 12 by abutment against the edge side 15a of the hollow housing 15.
  • connection device 4 to deploy a prop 3 of support (connected to the second part 8) will now be explained using the figures 4 to 9 .
  • the prop 3 and the second part 8 are initially arranged in the retracted position ( figures 8 and 9 ), the second direction II-II then being substantially horizontal (the vertical direction being defined by Earth's gravity).
  • the formwork plane P is substantially horizontal.
  • the connecting device has protuberances 13b
  • the movement illustrated by the arrow 16 is continued until that the protuberances 13b no longer protrude into the hollow housing 15.
  • the prop 3 and the second part 8 are moved in translation relative to the first part 5 by bringing the pivot axis 11 to the first end 12a of the oblong slot 12 along the second direction II-II, by means of a movement opposite to that illustrated by arrow 23 on the figure 7 .
  • a subsequent step b) the prop 3 and the second part 8 are rotated (or left to move under the effect of gravity) relative to the first part 5 around the pivot axis 11 until they are brought into the withdrawn position ( figure 3 and 6 ).
  • the prop 3 and the second part 8 are displaced by translation relative to the first part 5 so as to bring the second part 8 into the plugging position ( figure 4 and 5 ), by means of a translational movement opposite to the movement illustrated by arrow 21 of figures 4 and 5 .
  • This can be achieved by simply increasing the total length of the prop 3 prop, the formwork structure 2 then being held suspended by lifting means (a crane lifter for example). This increase in length, by pressing the prop 3 of support on the ground, provides a displacement of the second part 8 from the withdrawal position ( figures 3 and 6 ) to the plug-in position ( figures 4 and 5 ).
  • a locking pin is inserted simultaneously in the locking lumen 20 and in the oblong lumen 12 to guarantee that the second part 8 is held in the plugging position.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

Description

La présente invention concerne le domaine de la construction par coffrage, et concerne plus particulièrement un dispositif de liaison pour relier un étai de soutènement à une structure de coffrage définissant un plan de coffrage.The present invention relates to the field of formwork construction, and more particularly relates to a connecting device for connecting a supporting forestay to a formwork structure defining a formwork plane.

Dans le domaine de la construction par coffrage, on a parfois recours à un ensemble de coffrage comprenant une structure de coffrage définissant un plan de coffrage, ladite structure de coffrage étant reliée de façon pivotante à au moins un étai de soutènement au moyen d'un dispositif de liaison. Un tel ensemble de coffrage est parfois appelé « table de coffrage » ou « table coffrante ».In the field of formwork construction, a formwork assembly is sometimes used comprising a formwork structure defining a formwork plane, said formwork structure being pivotally connected to at least one supporting forestay by means of a connecting device. Such a formwork assembly is sometimes called a "formwork table" or "formwork table".

Un exemple de tel ensemble de coffrage est illustré par les documents FR 3 027 932 et FR 3 027 934 décrivant un dispositif de liaison selon le préambule de la revendication 1. Dans ces documents, le dispositif de liaison comprend :

  • une première partie, adaptée pour être fixée à la structure de coffrage, et comprenant un logement d'enfichage s'étendant selon une première direction destinée à être orientée sensiblement perpendiculairement au plan de coffrage,
  • une deuxième partie, adaptée pour être fixée à l'étai de soutènement, et comprenant un tronçon d'enfichage qui s'étend selon une deuxième direction entre une extrémité proximale et une extrémité distale et qui est adapté pour être articulé avec la première partie à pivotement autour d'une troisième direction sensiblement perpendiculaire à la première direction.
An example of such a formwork assembly is illustrated by the documents FR 3 027 932 and FR 3 027 934 describing a connection device according to the preamble of claim 1. In these documents, the connection device comprises:
  • a first part, adapted to be fixed to the formwork structure, and comprising a plug-in housing extending in a first direction intended to be oriented substantially perpendicular to the formwork plane,
  • a second part, adapted to be fixed to the prop stay, and comprising a plugging section which extends in a second direction between a proximal end and a distal end and which is adapted to be articulated with the first part to pivoting around a third direction substantially perpendicular to the first direction.

La deuxième partie est déplaçable par rapport à la première partie entre au moins une position d'enfichage, dans laquelle le tronçon d'enfichage est reçu par emmanchement dans le logement d'enfichage, les première et deuxième directions étant parallèles l'une à l'autre, et une position d'escamotage, dans laquelle le tronçon d'enfichage est pivoté de façon que la deuxième direction soit angulairement à l'écart de la première direction.The second part is movable relative to the first part between at least one insertion position, in which the insertion section is received by fitting into the insertion housing, the first and second directions being parallel to one another. 'other, and a retracting position, in which the insertion section is pivoted so that the second direction is angularly away from the first direction.

La position d'escamotage permet de réduire de façon notable l'encombrement de l'ensemble de coffrage pour en faciliter la manutention, notamment lorsque ledit ensemble de coffrage doit être retiré au moyen d'une grue après coffrage d'un balcon d'un étage supérieur par appui vertical sur le balcon d'un étage inférieur, lequel balcon d'étage inférieur étant pourvu d'une barrière de sécurité pour limiter les risques de chute d'opérateurs. La barrière de sécurité constitue en effet un obstacle auquel les étais doivent échapper.The retracting position makes it possible to significantly reduce the size of the formwork assembly to facilitate handling, in particular when said formwork assembly must be removed by means of a crane after formwork of a balcony of a upper floor by vertical support on the balcony of a lower floor, which balcony on the lower floor is provided with a safety barrier to limit the risk of operators falling. The security barrier constitutes an obstacle from which the props must escape.

Dans ce document, il est toutefois fait usage d'un dispositif de liaison relativement complexe et onéreux, notamment avec un mouvement de quart de tour de l'étai de soutènement autour de son axe longitudinal pour verrouiller/déverrouiller le dispositif de liaison.In this document, however, use is made of a relatively complex and expensive connection device, in particular with a quarter-turn movement of the support prop around its longitudinal axis to lock / unlock the connection device.

En outre, le maintien de la deuxième partie en position d'escamotage est assuré par un crochet qui ajoute à la complexité et au coût du dispositif de liaison. Ce crochet est en outre difficile à manoeuvrer par un opérateur en raison de sa position distante et peu accessible, ainsi qu'en raison du poids de l'étai de soutènement qui induit une forte résistance contre la manœuvre du crochet. Cela rend nécessaire l'utilisation des deux mains de l'opérateur, voire de deux opérateurs différents oeuvrant simultanément pour libérer l'étai de soutènement. Enfin, ce crochet constitue un organe qui peut facilement être endommagé par un choc, de sorte que la fiabilité n'est pas satisfaisante.In addition, the retention of the second part in the retracting position is ensured by a hook which adds to the complexity and the cost of the connection device. This hook is also difficult to maneuver by an operator because of its distant and inaccessible position, as well as because of the weight of the prop stay which induces a strong resistance against the operation of the hook. This makes it necessary to use two hands of the operator, or even two different operators working simultaneously to release the prop. Finally, this hook constitutes a member which can easily be damaged by an impact, so that the reliability is not satisfactory.

Un problème proposé par la présente invention est de concevoir un dispositif de liaison simple, peu onéreux et fiable, permettant de rapidement et facilement déplacer un étai de soutènement entre au moins une position d'enfichage et une position d'escamotage.A problem proposed by the present invention is to design a simple, inexpensive and reliable connection device, making it possible to quickly and easily move a support stay between at least one insertion position and one retraction position.

Pour atteindre ces objets ainsi que d'autres, l'invention propose un dispositif de liaison selon la revendication 1.To achieve these and other objects, the invention provides a connection device according to claim 1.

Un tel dispositif de liaison présente une structure très simple et résistante. Il n'est fait usage d'aucun organe supplémentaire tel qu'un crochet pour maintenir la deuxième partie en position d'escamotage. Il est seulement fait usage de la gravité et de la géométrie des première et deuxième parties. Un unique opérateur agissant avec une seule main suffit à déplacer la deuxième partie (et l'étai de soutènement qui lui est lié) vers la position d'escamotage ou vers la position de retrait.Such a connecting device has a very simple and resistant structure. No additional member is used such as a hook to hold the second part in the retracted position. Only the gravity and the geometry of the first and second parts are used. A single operator acting with one hand is enough to move the second part (and the supporting prop which is linked to it) to the retracting position or to the withdrawing position.

De préférence, on peut prévoir une structure simple de telle sorte que :

  • l'extrémité distale du tronçon d'enfichage est plus proche, selon la deuxième direction, de la première extrémité de la lumière oblongue que de la deuxième extrémité de la lumière oblongue,
  • l'axe de pivotement est à une première distance dudit bord inférieur d'une paroi latérale du logement d'enfichage, dans un plan transversal perpendiculaire à la première direction,
  • l'extrémité distale du tronçon d'enfichage est à une deuxième distance de la deuxième extrémité de la lumière oblongue, ladite deuxième distance étant supérieure à ladite première distance.
Preferably, a simple structure can be provided so that:
  • the distal end of the insertion section is closer, in the second direction, to the first end of the oblong lumen than to the second end of the oblong lumen,
  • the pivot axis is at a first distance from said lower edge of a side wall of the plug-in housing, in a transverse plane perpendicular to the first direction,
  • the distal end of the insertion section is at a second distance from the second end of the oblong opening, said second distance being greater than said first distance.

Avantageusement, pour une bonne répartition des contraintes lors de l'appui latéral du tronçon d'enfichage contre le bord inférieur d'une paroi latérale du logement d'enfichage, on peut prévoir que ce dernier est pourvu d'un épanouissement s'étendant à l'écart de la première direction.Advantageously, for a good distribution of the stresses during the lateral support of the plug-in section against the lower edge of a side wall of the plug-in housing, it can be provided that the latter is provided with a spreading extending to away from the first direction.

De préférence, pour limiter les risques que la deuxième partie se déplace de façon fortuite depuis sa position d'escamotage vers sa position de retrait, on peut prévoir que :

  • la surface latérale du tronçon d'enfichage comporte un logement creux à bords latéraux s'étendant sensiblement perpendiculairement à la deuxième direction,
  • l'épanouissement comporte une excroissance destinée à pénétrer dans ledit logement creux lorsque la deuxième partie est en position d'escamotage.
Preferably, to limit the risks that the second part may move accidentally from its retracted position to its withdrawn position, it can be provided that:
  • the lateral surface of the insertion section comprises a hollow housing with lateral edges extending substantially perpendicular to the second direction,
  • the opening comprises a protuberance intended to penetrate into said hollow housing when the second part is in the retracted position.

Avantageusement, les première et deuxième parties peuvent être séparables l'une de l'autre par retrait de l'axe de pivotement hors de la lumière oblongue. Lors du stockage et des manutentions hors chantier, les première et deuxième parties peuvent ainsi être séparées, la première partie étant fixée à la structure de coffrage tandis que la deuxième partie est fixée à un étai de soutènement. L'assemblage des première et deuxième parties est réalisé de façon simple et rapide sur le chantier.Advantageously, the first and second parts can be separable from one another by withdrawal of the pivot axis out of the oblong opening. During storage and handling off site, the first and second parts can thus be separated, the first part being fixed to the formwork structure while the second part is fixed to a prop. The first and second parts are assembled quickly and easily on site.

De préférence, l'axe de pivotement peut comporter un téton radial procurant à l'axe de pivotement un tronçon à section transversale présentant au moins une dimension supérieure à la largeur de la lumière oblongue. Pour séparer les première et deuxième parties, l'axe de pivotement doit ainsi être orienté de façon relativement précise par rapport à la lumière oblongue. Cela limite efficacement le risque d'erreurs de manipulation pouvant aboutir à une séparation fortuite des première et deuxième parties.Preferably, the pivot axis may include a radial stud providing the pivot axis with a cross-section having at least one dimension greater than the width of the oblong opening. To separate the first and second parts, the pivot axis must therefore be oriented relatively precisely with respect to the oblong lumen. This effectively limits the risk of handling errors which can lead to an accidental separation of the first and second parts.

Avantageusement, l'axe de pivotement peut être lié de façon inséparable à la première partie. L'axe de pivotement, en dépit de ce qu'il peut être déplacé pour autoriser une séparation des première et deuxième parties l'une par rapport à l'autre, ne peut ainsi pas être perdu ni chuter sur un opérateur.Advantageously, the pivot axis can be linked inseparably to the first part. The pivot axis, despite the fact that it can be moved to allow separation of the first and second parts from one another, cannot therefore be lost or dropped on an operator.

Pour ce faire, on peut prévoir de façon très simple que :

  • l'axe de pivotement est engagé à coulissement dans un trou ménagé dans la première partie,
  • l'axe de pivotement comporte un téton radial procurant à l'axe de pivotement un tronçon à section transversale présentant au moins une dimension supérieure aux dimensions de la section transversale dudit trou ménagé dans la première partie.
To do this, it can be provided very simply that:
  • the pivot axis is slidably engaged in a hole made in the first part,
  • the pivot axis comprises a radial stud providing the pivot axis with a cross-section having at least one dimension greater than the dimensions of the cross section of said hole in the first part.

Il peut être utile dans certains cas de verrouiller la deuxième partie en position d'enfichage. Pour ce faire, on peut de préférence prévoir que :

  • la première partie comprend une lumière de verrouillage traversant le logement d'enfichage en s'étendant selon une quatrième direction perpendiculaire à la première direction, ladite lumière de verrouillage se trouvant en correspondance de la lumière oblongue lorsque la deuxième partie est en position d'enfichage,
  • le dispositif de liaison comprend un axe de verrouillage adapté pour être inséré simultanément dans la lumière de verrouillage et dans la lumière oblongue lorsque la deuxième partie est en position d'enfichage.
It may be useful in certain cases to lock the second part in the plugging position. To do this, it can preferably be provided that:
  • the first part comprises a locking light passing through the plug-in housing by extending in a fourth direction perpendicular to the first direction, said locking light being in correspondence with the oblong light when the second part is in the plugging position ,
  • the connecting device comprises a locking pin adapted to be inserted simultaneously in the locking lumen and in the oblong lumen when the second part is in the plugging position.

Selon un autre aspect de l'invention, il est proposé un ensemble de coffrage comprenant une structure de coffrage définissant un plan de coffrage, ladite structure de coffrage étant reliée à au moins un étai de soutènement au moyen d'un dispositif de liaison tel que décrit précédemment.According to another aspect of the invention, there is provided a formwork assembly comprising a formwork structure defining a formwork plane, said formwork structure being connected to at least one supporting forestay by means of a connecting device such as previously described.

Selon encore un autre aspect de l'invention, il est proposé un procédé de déploiement d'un étai de soutènement relié à une structure de coffrage par un dispositif de liaison tel que décrit précédemment et disposé initialement en position d'escamotage, le plan de coffrage étant sensiblement horizontal. Ledit procédé comporte les étapes suivantes :

  1. a) déplacer par translation axiale l'étai de soutènement et la deuxième partie par rapport à la première partie en amenant l'axe de pivotement à la première extrémité de la lumière oblongue selon la deuxième direction,
  2. b) déplacer par rotation l'étai de soutènement et la deuxième partie par rapport à la première partie autour de l'axe de pivotement jusqu'à amener la deuxième partie en position de retrait,
  3. c) déplacer par translation axiale l'étai de soutènement et la deuxième partie par rapport à la première partie de façon à amener la deuxième partie en position d'enfichage.
According to yet another aspect of the invention, there is provided a method of deploying a support strut connected to a formwork structure by a connecting device as described above and initially arranged in the retracted position, the plane of formwork being substantially horizontal. Said method comprises the following steps:
  1. a) displacing the prop and the second part by axial translation relative to the first part by bringing the pivot axis to the first end of the oblong opening in the second direction,
  2. b) rotating the prop stay and the second part relative to the first part about the pivot axis until the second part is brought into the withdrawn position,
  3. c) move by axial translation the prop and the second part relative to the first part so as to bring the second part into the plugging position.

Un tel procédé est simple et rapide à mettre en œuvre, même par un opérateur peu qualifié, car il ne requiert qu'une rapide succession de mouvements simples de manipulation de l'étai de soutènement, sans utiliser d'outils, et avec peu d'efforts.Such a method is simple and quick to implement, even by an inexperienced operator, since it requires only a rapid succession of simple movements of manipulation of the prop stay, without using tools, and with little d 'efforts.

Pour faciliter le déplacement de l'étai de soutènement et de la deuxième partie depuis la position d'escamotage vers la position de retrait, on peut avantageusement prévoir une étape, préalable à l'étape a), lors de laquelle on déplace l'étai de soutènement et la deuxième partie par rapport à la première partie par rotation autour de l'axe de pivotement de façon à écarter la surface latérale de la deuxième partie vis-à-vis du bord inférieur d'une paroi latérale du logement d'enfichage.To facilitate the movement of the prop and the second part from the retracting position to the withdrawing position, it is advantageous to provide a step, prior to step a), during which the prop is moved of support and the second part with respect to the first part by rotation about the pivot axis so as to separate the lateral surface of the second part from the lower edge of a side wall of the plug-in housing .

Encore selon un autre aspect de l'invention, il est proposé un procédé de repli d'un étai de soutènement relié à une structure de coffrage par un dispositif de liaison tel que décrit précédemment et disposé initialement en position d'enfichage, le plan de coffrage étant sensiblement horizontal. Ledit procédé comporte les étapes suivantes :

  1. A) déplacer en translation axiale l'étai de soutènement et la deuxième partie depuis la position d'enfichage vers la position de retrait en amenant l'axe de pivotement à la première extrémité de la lumière oblongue selon la deuxième direction,
  2. B) déplacer en rotation l'étai de soutènement et la deuxième partie par rapport à la première partie autour de l'axe de pivotement de façon à amener la deuxième direction en orientation sensiblement perpendiculaire à la première direction,
  3. C) déplacer en translation axiale l'étai de soutènement et la deuxième partie par rapport à la première partie en faisant coulisser l'axe de pivotement dans la lumière oblongue en direction de la deuxième extrémité jusqu'à faire dépasser la deuxième partie au-delà du bord inférieur d'une paroi latérale du logement d'enfichage,
  4. D) déplacer ou laisser se déplacer en rotation l'étai de soutènement et la deuxième partie par rapport à la première partie autour de l'axe de pivotement de façon que la deuxième partie vienne en appui selon sa surface latérale contre le bord inférieur d'une paroi latérale du logement d'enfichage.
Still according to another aspect of the invention, there is provided a method of folding a supporting stay connected to a formwork structure by a connecting device as described above and initially arranged in the plugging position, the plane of formwork being substantially horizontal. Said method comprises the following steps:
  1. A) move the prop and the second part in axial translation from the plugging position to the withdrawing position by bringing the pivot axis to the first end of the oblong opening in the second direction,
  2. B) rotating the prop stay and the second part relative to the first part around the pivot axis so as to bring the second direction in an orientation substantially perpendicular to the first direction,
  3. C) move the prop and the second part in axial translation relative to the first part by sliding the pivot axis in the oblong opening in the direction of the second end until the second part protrudes beyond from the lower edge of a side wall of the plug-in housing,
  4. D) move or allow the prop stay and the second part to move in rotation relative to the first part around the pivot axis so that the second part comes to bear according to its lateral surface against the lower edge of a side wall of the plug-in housing.

D'autres objets, caractéristiques et avantages de la présente invention ressortiront de la description suivante de modes de réalisation particuliers, faite en relation avec les figures jointes, parmi lesquelles :

  • la figure 1 est une vue en perspective et de dessous d'un ensemble comprenant une structure de coffrage définissant un plan de coffrage, ladite structure de coffrage étant reliée à quatre étais de soutènement au moyen des dispositifs de liaison selon un mode de réalisation particulier de l'invention ;
  • la figure 2 est une vue en perspective et de dessous d'un dispositif de liaison utilisé sur la figure 1, avec des première et deuxième parties séparées ;
  • la figure 3 est une vue en perspective et de dessous d'un dispositif de liaison utilisé sur la figure 1, avec des première et deuxième parties assemblées ;
  • la figure 4 est une vue de côté d'un dispositif de liaison utilisé sur la figure 1, la deuxième partie étant en position d'enfichage ;
  • la figure 5 est une vue de détail et en coupe de la figure 4 ;
  • la figure 6 est une vue de côté d'un dispositif de liaison utilisé sur la figure 1, la deuxième partie étant en position de retrait ;
  • la figure 7 est une vue de côté d'un dispositif de liaison utilisé sur la figure 1, la deuxième partie étant en cours de déplacement vers sa position d'escamotage ;
  • la figure 8 est une vue de côté d'un dispositif de liaison utilisé sur la figure 1, la deuxième partie étant en position d'escamotage ; et
  • la figure 9 est une vue de détail et en coupe de la figure 8.
Other objects, characteristics and advantages of the present invention will emerge from the following description of particular embodiments, given in relation to the attached figures, among which:
  • the figure 1 is a perspective view from below of an assembly comprising a formwork structure defining a formwork plane, said formwork structure being connected to four support struts by means of connecting devices according to a particular embodiment of the invention ;
  • the figure 2 is a perspective view from below of a connecting device used on the figure 1 , with separate first and second parts;
  • the figure 3 is a perspective view from below of a connecting device used on the figure 1 , with first and second parts assembled;
  • the figure 4 is a side view of a connecting device used on the figure 1 , the second part being in the insertion position;
  • the figure 5 is a detail view in section of the figure 4 ;
  • the figure 6 is a side view of a connecting device used on the figure 1 , the second part being in the retracted position;
  • the figure 7 is a side view of a connecting device used on the figure 1 , the second part being in the process of moving towards its retracted position;
  • the figure 8 is a side view of a connecting device used on the figure 1 , the second part being in the retracted position; and
  • the figure 9 is a detail view in section of the figure 8 .

Sur la figure 1 est illustré un ensemble de coffrage 1, de type « table de coffrage » ou « table coffrante », comprenant une structure de coffrage 2 définissant un plan de coffrage P. Ladite structure de coffrage 2 est reliée à quatre étais 3 de soutènement au moyen d'un exemple de dispositifs de liaison 4 selon l'invention.On the figure 1 illustrated is a formwork assembly 1, of the “formwork table” or “formwork table” type, comprising a formwork structure 2 defining a formwork plane P. Said formwork structure 2 is connected to four support struts 3 by means of an example of connecting devices 4 according to the invention.

La structure du dispositif de liaison 4 est plus particulièrement visible sur les figures 2 et 3.The structure of the connection device 4 is more particularly visible on the figures 2 and 3 .

Sur la figure 2, le dispositif de liaison 4 apparaît dans un état démonté avec :

  • une première partie 5 adaptée pour être fixée (par le biais de vis coopérant avec les trous oblongs 6) à la structure de coffrage 2, comprenant un logement d'enfichage 7 s'étendant selon une première direction I-I destinée à être orientée sensiblement perpendiculairement au plan de coffrage P,
  • une deuxième partie 8, adaptée pour être fixée à l'étai 3 de soutènement (en l'espèce par quatre vis 9), et comprenant un tronçon d'enfichage 10 qui s'étend selon une deuxième direction II-II entre une extrémité proximale 10a et une extrémité distale 10b, qui est muni d'une surface latérale 10c, et qui est adapté pour être articulé avec la première partie 5 à pivotement autour d'une troisième direction III-III sensiblement perpendiculaire à la première direction I-I.
On the figure 2 , the connection device 4 appears in a disassembled state with:
  • a first part 5 adapted to be fixed (by means of screws cooperating with the oblong holes 6) to the formwork structure 2, comprising a plug-in housing 7 extending in a first direction II intended to be oriented substantially perpendicular to the formwork plan P,
  • a second part 8, adapted to be fixed to the prop 3 of support (in this case by four screws 9), and comprising a plug-in section 10 which extends in a second direction II-II between a proximal end 10a and a distal end 10b, which is provided with a lateral surface 10c, and which is adapted to be articulated with the first part 5 pivoting around a third direction III-III substantially perpendicular to the first direction II.

La troisième direction III-III est définie par un axe de pivotement 11 porté par la première partie 5, tandis que le tronçon d'enfichage 10 comporte une lumière oblongue 12 qui s'étend selon la deuxième direction II-II entre une première extrémité 12a et une deuxième extrémité 12b et qui est apte à recevoir l'axe de pivotement 11.The third direction III-III is defined by a pivot axis 11 carried by the first part 5, while the plug-in section 10 has an oblong slot 12 which extends in the second direction II-II between a first end 12a and a second end 12b and which is capable of receiving the pivot axis 11.

Sur la figure 3, le dispositif de liaison 4 apparaît avec les première 5 et deuxième 8 parties dans un état assemblé dans lequel l'axe de pivotement 11 passe à travers la lumière oblongue 12. Sur cette figure 3, la deuxième partie 8 est plus particulièrement dans une position dite de retrait dans laquelle le tronçon d'enfichage 10 est disposé hors du logement d'enfichage 7, les première I-I et deuxième II-II directions étant parallèles entre elles (et même coïncidentes ici), et l'axe de pivotement 11 étant engagé dans la lumière oblongue 12 à la première extrémité 12a de la lumière oblongue 12 pour autoriser le pivotement de la deuxième partie 8 autour de la troisième direction III-III définie par l'axe de pivotement 11. Cette même position de retrait est illustrée sur la figure 6.On the figure 3 , the connecting device 4 appears with the first 5 and second 8 parts in an assembled state in which the pivot axis 11 passes through the oblong slot 12. On this figure 3 , the second part 8 is more particularly in a so-called withdrawal position in which the plug-in section 10 is disposed outside of the plug-in housing 7, the first II and second II-II directions being parallel to each other (and even coinciding here ), and the pivot axis 11 being engaged in the oblong slot 12 at the first end 12a of the oblong slot 12 to allow the pivoting of the second part 8 around the third direction III-III defined by the pivot axis 11. This same withdrawal position is illustrated on the figure 6 .

La deuxième partie 8 est en outre déplaçable par rapport à la première partie 5 entre au moins deux autres positions, à savoir :

  • une position d'enfichage (figures 4 et 5) dans laquelle le tronçon d'enfichage 10 est reçu par emmanchement dans le logement d'enfichage 7, l'axe de pivotement 11 étant engagé dans la lumière oblongue 12 à l'écart de la première extrémité 12a de la lumière oblongue 12 selon la deuxième direction II-II, les première I-I et deuxième II-II directions étant parallèles l'une à l'autre (et même coïncidentes ici),
  • une position d'escamotage (figures 8 et 9), dans laquelle le tronçon d'enfichage 10 est pivoté de façon que la deuxième direction II-II soit angulairement à l'écart de la première direction I-I (selon un angle A ici), dans laquelle l'axe de pivotement 11 est engagé dans la lumière oblongue 12 à l'écart de la première extrémité 12a de la lumière oblongue 12, le tronçon d'enfichage 10 portant alors par sa surface latérale 10c contre un bord inférieur 13 d'une paroi latérale 14 du logement d'enfichage 7, pour s'opposer au pivotement de la deuxième partie vers la première direction I-I, maintenant ainsi la deuxième partie 8 pivotée à l'écart de la première direction I-I.
The second part 8 can also be moved relative to the first part 5 between at least two other positions, namely:
  • a plug-in position ( figures 4 and 5 ) in which the plug-in section 10 is received by fitting into the plug-in housing 7, the pivot axis 11 being engaged in the oblong opening 12 away from the first end 12a oblong light 12 in the second direction II-II, the first II and second II-II directions being parallel to each other (and even coinciding here),
  • a retracting position ( figures 8 and 9 ), in which the plug-in section 10 is pivoted so that the second direction II-II is angularly away from the first direction II (at an angle A here), in which the pivot axis 11 is engaged in the oblong slot 12 away from the first end 12a of the oblong slot 12, the plugging section 10 then bearing by its lateral surface 10c against a lower edge 13 of a side wall 14 of the plug housing 7 , to oppose the pivoting of the second part towards the first direction II, thus keeping the second part 8 pivoted away from the first direction II.

Structurellement, comme illustré sur la figure 9, pour procurer l'appui latéral du tronçon d'enfichage 10 contre le bord inférieur 13 de la paroi latérale 14 du logement d'enfichage 7, on peut prévoir que :

  • l'extrémité distale 10b du tronçon d'enfichage est plus proche, selon la deuxième direction II-II, de la première extrémité 12a de la lumière oblongue 12 que de la deuxième extrémité 12b de la lumière oblongue 12,
  • l'axe de pivotement 11 est à une première distance D1 dudit bord inférieur 13 de la paroi latérale 14 du logement d'enfichage 7, dans un plan transversal P1 perpendiculaire à la première direction I-I,
  • l'extrémité distale 10b du tronçon d'enfichage 10 est à une deuxième distance D2 de la deuxième extrémité 12b de la lumière oblongue 12,
  • ladite deuxième distance D2 est supérieure à la première distance D1.
Structurally, as illustrated in the figure 9 , to provide the lateral support of the plug-in section 10 against the lower edge 13 of the side wall 14 of the plug-in housing 7, provision may be made for:
  • the distal end 10b of the insertion section is closer, in the second direction II-II, to the first end 12a of the oblong slot 12 than to the second end 12b of the oblong slot 12,
  • the pivot axis 11 is at a first distance D1 from said lower edge 13 of the side wall 14 of the plug-in housing 7, in a transverse plane P1 perpendicular to the first direction II,
  • the distal end 10b of the insertion section 10 is at a second distance D2 from the second end 12b of the oblong slot 12,
  • said second distance D2 is greater than the first distance D1.

On remarque d'ailleurs que le bord inférieur 13 de la paroi latérale 14 du logement d'enfichage 7 est pourvu d'un épanouissement 13a s'étendant à l'écart de la première direction I-I.Note also that the lower edge 13 of the side wall 14 of the plug-in housing 7 is provided with an opening 13a extending away from the first direction I-I.

Pour limiter efficacement les risques que la deuxième partie 8 se déplace de façon intempestive depuis sa position d'escamotage vers sa position de retrait, la surface latérale 10c du tronçon d'enfichage 10 comporte un logement creux 15 à bords latéraux 15a s'étendant sensiblement perpendiculairement à la deuxième direction II-II. Et l'épanouissement 13a comporte deux excroissances 13b destinées à pénétrer dans le logement creux 15 lorsque la deuxième partie 8 est en position d'escamotage (figures 8 et 9).To effectively limit the risks of the second part 8 moving in an untimely manner from its retracting position towards its withdrawing position, the lateral surface 10c of the insertion section 10 comprises a hollow housing 15 with lateral edges 15a extending substantially perpendicular to the second direction II-II. And the opening 13a comprises two protrusions 13b intended to penetrate into the hollow housing 15 when the second part 8 is in the retracted position ( figures 8 and 9 ).

Tant que les excroissances 13b sont engagées dans le logement creux 15 à bords latéraux 15a, elles s'opposent à un coulissement de l'axe de pivotement 11 à l'intérieur de la lumière oblongue 12 vers la première extrémité 12a. Il est ainsi nécessaire qu'un opérateur, préalablement à un coulissement de l'axe de pivotement 11 à l'intérieur de la lumière oblongue 12 vers la première extrémité 12a, augmente l'écart angulaire (angle A) entre les première I-I et deuxième II-II directions par un mouvement illustré par la flèche 16. Or, le plan de coffrage P étant généralement horizontal, le poids de l'étai 3 de soutènement résultant de la simple gravité s'oppose au mouvement illustré par la flèche 16. Et du fait du relativement grand bras de levier procuré par la distance entre l'axe de pivotement 11 et l'extrémité libre (inférieure) de l'étai 3 de soutènement, les éventuelles vibrations et ressauts subis pas l'étai 3 de soutènement lors des opérations de manutention sont insuffisants pour procurer un déplacement selon la flèche 16 susceptible de provoquer une sortie des excroissances 13b hors du logement creux 15.As long as the protrusions 13b are engaged in the hollow housing 15 with side edges 15a, they oppose a sliding of the pivot axis 11 inside the oblong opening 12 towards the first end 12a. It is thus necessary that an operator, prior to a sliding of the axis of pivoting 11 inside the oblong opening 12 towards the first end 12a, increases the angular difference (angle A) between the first II and second II-II directions by a movement illustrated by the arrow 16. Now, the plane of formwork P being generally horizontal, the weight of the prop 3 supporting from simple gravity opposes the movement illustrated by the arrow 16. And because of the relatively large lever arm provided by the distance between the pivot axis 11 and the free (lower) end of the prop 3 prop, the possible vibrations and jerks undergone by the prop 3 prop during handling operations are insufficient to provide movement according to arrow 16 capable of causing an exit protrusions 13b outside the hollow housing 15.

Comme le lecteur le comprend bien à la vue des figures 2 et 3, les première 5 et deuxième 8 parties sont séparables par retrait de l'axe de pivotement 11 hors de la lumière oblongue 12. Sur ces mêmes figures, on observe que l'axe de pivotement 11 comporte deux tétons radiaux 17 et 18 procurant à l'axe de pivotement 11 deux tronçons respectifs à section transversale présentant au moins une dimension L11 supérieure à la largeur L12 de la lumière oblongue 12 (voir également figure 9).As the reader understands well at the sight of figures 2 and 3 , the first 5 and second 8 parts are separable by withdrawal of the pivot axis 11 out of the oblong slot 12. In these same figures, it can be seen that the pivot axis 11 comprises two radial pins 17 and 18 providing the pivot axis 11 two respective cross-section sections having at least one dimension L11 greater than the width L12 of the oblong opening 12 (see also figure 9 ).

Le téton radial 17 permet plus particulièrement de limiter les risques de retrait intempestif de l'axe de pivotement 11 hors de la lumière oblongue 12. En effet, pour ce faire, il est nécessaire que le téton 17 soit sensiblement orienté selon une direction parallèle à la deuxième direction II-II.The radial stud 17 more particularly makes it possible to limit the risks of untimely withdrawal of the pivot axis 11 out of the oblong opening 12. In fact, to do this, the stud 17 must be substantially oriented in a direction parallel to the second direction II-II.

Le téton radial 18 permet quant à lui de lier l'axe de pivotement 11 de façon inséparable à la première partie 5.The radial stud 18 makes it possible to link the pivot axis 11 inseparably to the first part 5.

Pour ce faire, l'axe de pivotement 11 est engagé à coulissement selon la troisième direction III-III dans un trou 19 ménagé dans la première partie 5. Ledit trou 19 présente une section transversale (un diamètre ici) peu supérieur au diamètre de l'axe de pivotement 11 et en tout état de cause inférieur à la largeur L11 du tronçon de l'axe de pivotement 11 comprenant le téton radial 18. L'axe de pivotement ne peut ainsi pas être retiré hors de la première partie 5 plus que ce qui est représenté sur la figure 2.To do this, the pivot axis 11 is slidably engaged in the third direction III-III in a hole 19 made in the first part 5. Said hole 19 has a cross section (a diameter here) little greater than the diameter of l pivot axis 11 and in any event less than the width L11 of the section of the pivot axis 11 comprising the radial stud 18. The pivot axis can thus not be removed from the first part 5 more than what is depicted on the figure 2 .

La deuxième partie 5 peut être verrouillée en position d'enfichage, comme explicité sur la figure 5. A cet effet, on distingue sur cette figure que :

  • la première partie 5 comprend une lumière de verrouillage 20 traversant le logement d'enfichage 7 en s'étendant selon une quatrième direction IV-IV perpendiculaire à la première direction I-I, ladite lumière de verrouillage 20 se trouvant en correspondance de la lumière oblongue 12 lorsque la deuxième partie 8 est en position d'enfichage (et plus particulièrement en correspondance de la première extrémité 12a de la lumière oblongue 12),
  • le dispositif de liaison 4 comprend un axe de verrouillage (non visible ici) se présentant sous la forme d'une simple tige à section transversale adaptée pour être insérée simultanément dans la lumière de verrouillage 20 et dans la lumière oblongue 12 lorsque la deuxième partie 8 est en position d'enfichage.
The second part 5 can be locked in the plugging position, as explained on the figure 5 . For this purpose, we distinguish in this figure that:
  • the first part 5 comprises a locking lumen 20 passing through the plug-in housing 7 extending in a fourth direction IV-IV perpendicular to the first direction II, said locking lumen 20 being in correspondence with the oblong lumen 12 when the second part 8 is in the plugging position (and more particularly in correspondence with the first end 12a of the oblong slot 12),
  • the connecting device 4 comprises a locking pin (not visible here) in the form of a simple rod with cross section adapted to be inserted simultaneously in the locking lumen 20 and in the oblong lumen 12 when the second part 8 is in the plug-in position.

L'utilisation du dispositif de liaison 4 pour escamoter (ou replier) un étai 3 de soutènement (relié à la deuxième partie 8) va désormais être explicitée à l'aide des figures 4 à 9.The use of the connecting device 4 to retract (or fold up) a prop 3 prop (connected to the second part 8) will now be explained using the figures 4 to 9 .

La deuxième partie 8 est disposée initialement en position d'enfichage (figures 4 et 5), la deuxième direction II-II étant alors sensiblement verticale (la direction verticale étant définie par la gravité terrestre). Le plan de coffrage P est quant à lui sensiblement horizontal.The second part 8 is initially arranged in the plugging position ( figures 4 and 5 ), the second direction II-II then being substantially vertical (the vertical direction being defined by Earth's gravity). The formwork plane P is substantially horizontal.

Si la deuxième partie 8 est verrouillée en position d'enfichage par un axe de verrouillage, on commence par retirer celui-ci lors d'une étape préliminaire.If the second part 8 is locked in the plugging position by a locking pin, we start by removing it during a preliminary step.

Lors d'une étape A), on déplace en translation l'étai 3 de soutènement et la deuxième partie 8 depuis la position d'enfichage (figures 4 et 5) vers la position de retrait (figures 3 et 6) en amenant l'axe de pivotement 11 à la première extrémité 12a de la lumière oblongue 12 selon la deuxième direction II-II (par un simple mouvement de translation illustré par la flèche 21). Ceci peut être réalisé par un simple raccourcissement de la longueur totale de l'étai 3 de soutènement, la structure de coffrage 2 étant alors maintenue suspendue par des moyens de levage (un palonnier de grue par exemple). Ce raccourcissement de longueur, conjugué à l'effet de la gravité, procure un déplacement de l'étai 3 de soutènement et de la deuxième partie 8 depuis la position d'enfichage (figures 4 et 5) vers la position de retrait (figures 3 et 6).During a step A), the prop 3 and the second part 8 are moved in translation from the insertion position ( figures 4 and 5 ) to the withdrawal position ( figures 3 and 6 ) by bringing the pivot axis 11 to the first end 12a of the oblong slot 12 in the second direction II-II (by a simple translational movement illustrated by the arrow 21). This can be achieved by a simple shortening of the total length of the prop 3 prop, the formwork structure 2 then being held suspended by lifting means (a crane lifter for example). This shortening in length, combined with the effect of gravity, provides a movement of the prop 3 and the second part 8 from the insertion position ( figures 4 and 5 ) to the withdrawal position ( figures 3 and 6 ).

Lors d'une étape B) ultérieure, on déplace en rotation l'étai 3 de soutènement et la deuxième partie 8 par rapport à la première partie 5 autour de l'axe de pivotement 11 (selon le mouvement de rotation illustré par la flèche 16 sur la figure 6) de façon à amener la deuxième direction II-II en orientation sensiblement perpendiculaire à la première direction I-I. Naturellement, ce sens de rotation est choisi de façon à pivoter l'étai 3 de soutènement en direction du centre de la structure de coffrage 2 (pour éviter tout dépassement de l'étai 3 de soutènement en périphérie de la structure de coffrage 2).During a subsequent step B), the prop 3 and the second part 8 are rotated in rotation relative to the first part 5 about the pivot axis 11 (according to the rotational movement illustrated by the arrow 16 on the figure 6 ) so as to bring the second direction II-II in an orientation substantially perpendicular to the first direction II. Naturally, this direction of rotation is chosen so as to pivot the prop 3 prop in the direction of the center of the formwork structure 2 (to avoid any protrusion of the prop 3 prop on the periphery of the formwork structure 2).

Lors d'une étape C) ultérieure, on déplace en translation l'étai 3 de soutènement et la deuxième partie 8 par rapport à la première partie 5 en faisant coulisser l'axe de pivotement 11 dans la lumière oblongue 12 en direction de la deuxième extrémité 12b (selon le mouvement illustré par la flèche 23 sur la figure 7) jusqu'à faire dépasser la deuxième partie 8 au-delà du bord inférieur 13 de la paroi latérale 14 du logement d'enfichage 7 (figure 7).During a subsequent step C), the prop 3 and the second part 8 are displaced in translation relative to the first part 5 by sliding the pivot axis 11 in the oblong opening 12 in the direction of the second end 12b (according to the movement illustrated by arrow 23 on the figure 7 ) until the second part 8 protrudes beyond the lower edge 13 of the side wall 14 of the plug-in housing 7 ( figure 7 ).

De façon plus précise, on fait coulisser la deuxième partie 8 jusqu'à ce que les excroissances 13b portées par l'épanouissement 13a soient situées en correspondance du logement creux 15 (sensiblement comme sur la figure 9).More precisely, the second part 8 is made to slide until the protuberances 13b carried by the opening 13a are located in correspondence with the hollow housing 15 (substantially as on the figure 9 ).

Enfin, lors d'une étape ultérieure D), on déplace en rotation (ou on laisse se déplacer sous l'effet de la gravité) l'étai 3 de soutènement et la deuxième partie 8 par rapport à la première partie 5 autour de l'axe de pivotement 11 (selon le mouvement illustré par la flèche 24 sur la figure 7) de façon que la deuxième partie 8 vienne en appui selon la surface latérale 10c contre le bord inférieur 13 de la paroi latérale 14 du logement d'enfichage 7 (figures 8 et 9). Simultanément, les excroissances 13b portées par l'épanouissement 13a pénètrent dans le logement creux 15 et empêchent toute translation de la deuxième partie 8 tendant à rapprocher l'axe de pivotement 11 vers la première extrémité 12a de la lumière oblongue 12 par butée contre le bord latéral 15a du logement creux 15.Finally, during a subsequent step D), the prop 3 and the second part 8 are moved in rotation (or left to move under the effect of gravity) relative to the first part 5 around the pivot axis 11 (according to the movement illustrated by arrow 24 on the figure 7 ) so that the second part 8 comes to bear along the lateral surface 10c against the lower edge 13 of the lateral wall 14 of the plug-in housing 7 ( figures 8 and 9 ). Simultaneously, the protuberances 13b carried by the opening 13a penetrate into the hollow housing 15 and prevent any translation of the second part 8 tending to bring the pivot axis 11 towards the first end 12a of the oblong light 12 by abutment against the edge side 15a of the hollow housing 15.

L'utilisation du dispositif de liaison 4 pour déployer un étai 3 de soutènement (relié à la deuxième partie 8) va désormais être explicitée à l'aide des figures 4 à 9.The use of the connection device 4 to deploy a prop 3 of support (connected to the second part 8) will now be explained using the figures 4 to 9 .

L'étai 3 de soutènement et la deuxième partie 8 sont disposés initialement en position d'escamotage (figures 8 et 9), la deuxième direction II-II étant alors sensiblement horizontale (la direction verticale étant définie par la gravité terrestre). Le plan de coffrage P est quant à lui sensiblement horizontal.The prop 3 and the second part 8 are initially arranged in the retracted position ( figures 8 and 9 ), the second direction II-II then being substantially horizontal (the vertical direction being defined by Earth's gravity). The formwork plane P is substantially horizontal.

Si le dispositif de liaison comporte des excroissances 13b, on commence, lors d'une étape préliminaire, par déplacer l'étai 3 de soutènement et la deuxième partie 8 par rapport à la première partie 5 par rotation autour de l'axe de pivotement 11 (selon un mouvement illustré par la flèche 16 sur les figures 8 et 9) de façon à écarter la surface latérale 10c de la deuxième partie 8 vis-à-vis du bord inférieur 13 de la paroi latérale 14 du logement d'enfichage 7. Ici, le mouvement illustré par la flèche 16 est poursuivi jusqu'à ce que les excroissances 13b ne dépassent plus dans le logement creux 15. On se trouve alors sensiblement dans la configuration illustrée sur la figure 7.If the connecting device has protuberances 13b, we start, during a preliminary step, by moving the prop 3 and the second support part 8 relative to the first part 5 by rotation around the pivot axis 11 (according to a movement illustrated by arrow 16 on the figures 8 and 9 ) so as to separate the side surface 10c of the second part 8 from the lower edge 13 of the side wall 14 of the plug-in housing 7. Here, the movement illustrated by the arrow 16 is continued until that the protuberances 13b no longer protrude into the hollow housing 15. We are then substantially in the configuration illustrated in the figure 7 .

Lors d'une étape a), on déplace par translation l'étai 3 de soutènement et la deuxième partie 8 par rapport à la première partie 5 en amenant l'axe de pivotement 11 à la première extrémité 12a de la lumière oblongue 12 selon la deuxième direction II-II, au moyen d'un mouvement opposé à celui illustré par la flèche 23 sur la figure 7.During a step a), the prop 3 and the second part 8 are moved in translation relative to the first part 5 by bringing the pivot axis 11 to the first end 12a of the oblong slot 12 along the second direction II-II, by means of a movement opposite to that illustrated by arrow 23 on the figure 7 .

Lors d'une étape b) ultérieure, on déplace par rotation l'étai 3 de soutènement et la deuxième partie 8 (ou on les laisse se déplacer sous l'effet de la gravité) par rapport à la première partie 5 autour de l'axe de pivotement 11 jusqu'à les amener en position de retrait (figure 3 et 6).In a subsequent step b), the prop 3 and the second part 8 are rotated (or left to move under the effect of gravity) relative to the first part 5 around the pivot axis 11 until they are brought into the withdrawn position ( figure 3 and 6 ).

Enfin, lors d'une étape c), on déplace par translation l'étai 3 de soutènement et la deuxième partie 8 par rapport à la première partie 5 de façon à amener la deuxième partie 8 en position d'enfichage (figure 4 et 5), au moyen d'un mouvement de translation opposé au mouvement illustré par la flèche 21 des figures 4 et 5. Ceci peut être réalisé par une simple augmentation de la longueur totale de l'étai 3 de soutènement, la structure de coffrage 2 étant alors maintenue suspendue par des moyens de levage (un palonnier de grue par exemple). Cette augmentation de longueur, par appui de l'étai 3 de soutènement sur le sol, procure un déplacement de la deuxième partie 8 depuis la position de retrait (figures 3 et 6) vers la position d'enfichage (figures 4 et 5).Finally, during a step c), the prop 3 and the second part 8 are displaced by translation relative to the first part 5 so as to bring the second part 8 into the plugging position ( figure 4 and 5 ), by means of a translational movement opposite to the movement illustrated by arrow 21 of figures 4 and 5 . This can be achieved by simply increasing the total length of the prop 3 prop, the formwork structure 2 then being held suspended by lifting means (a crane lifter for example). This increase in length, by pressing the prop 3 of support on the ground, provides a displacement of the second part 8 from the withdrawal position ( figures 3 and 6 ) to the plug-in position ( figures 4 and 5 ).

Enfin, s'il en est besoin, il est inséré un axe de verrouillage simultanément dans la lumière de verrouillage 20 et dans la lumière oblongue 12 pour garantir le maintien de la deuxième partie 8 en position d'enfichage.Finally, if necessary, a locking pin is inserted simultaneously in the locking lumen 20 and in the oblong lumen 12 to guarantee that the second part 8 is held in the plugging position.

La présente invention n'est pas limitée aux modes de réalisation qui ont été explicitement décrits, mais elle en inclut les diverses variantes et généralisations contenues dans le domaine des revendications ci-après.The present invention is not limited to the embodiments which have been explicitly described, but it includes the various variants and generalizations thereof contained in the field of claims below.

Claims (13)

  1. Connecting device (4) for connecting a supporting shore (3) to a formwork structure (2) defining a formwork plane (P), comprising:
    - a first part (5), designed to be fixed to the formwork structure (2) and comprising a plug-in housing (7) extending in a first direction (I-I) intended to be oriented substantially perpendicular to the formwork plane (P),
    - a second part (8), designed to be fixed to the supporting shore (3), and comprising a plug-in portion (10) which extends in a second direction (II-II) between a proximal end (10a) and a distal end (10b), which is equipped with a lateral surface (10c), and which is designed to be articulated to the first part (5) in pivoting about a third direction (III-III) substantially perpendicular to the first direction (I-I),
    characterized in that:
    - the third direction (III-III) is defined by a pivot pin (11) formed by the first part (5), while the plug-in portion (10) comprises an oblong slot (12) which extends in the second direction (II-II) between a first end (12a) and a second end (12b) and which is able to accept the pivot pin (11),
    - in an assembled state, the second part (8) is able to be moved with respect to the first part (5) between at least three positions, namely:
    • a plugged-in position in which the plug-in portion (10) is accepted by push-fitting into the plug-in housing (7), the pivot pin (11) being engaged in the oblong slot (12) and away from the first end (12a) of the oblong slot (12) in the second direction (II-II), the first (I-I) and second (II-II) directions being parallel to one another,
    • a withdrawn position in which the plug-in portion (10) is arranged out of the plug-in housing (7), the first (I-I) and second (II-II) directions being parallel to one another, and the pivot pin (11) being engaged in the oblong slot (12) at the first end (12a) of the oblong slot (12) so as to allow the second part (8) to pivot about the pivot pin (11),
    • a retracted position, in which the plug-in portion (10) is pivoted so that the second direction (II-II) is angularly (A) separated from the first direction (I-I), in which the pivot pin (11) is engaged in the oblong slot (12) away from the first end (12a) of the oblong slot (12), the plug-in portion (10) therefore bearing via its lateral surface (10c) against a lower edge (13) of a lateral wall (14) of the plug-in housing (7), to oppose the pivoting of the second part (8) towards the first direction (I-I).
  2. Connecting device (4) according to Claim 1, characterized in that:
    - the distal end (10b) of the plug-in portion (10) is closer, in the second direction (II-II), to the first end (12a) of the oblong slot (12) than to the second end (12b) of the oblong slot (12),
    - the pivot pin (11) is at a first distance (D1) from the said lower edge (13) of a lateral wall (14) of the plug-in housing (7) in a transverse plane (P1) perpendicular to the first direction (I-I),
    - the distal end (10b) of the plug-in portion (10) is at a second distance (D2) from the second end (12b) of the oblong slot (12), the said second distance (D2) being greater than the said first distance (D1).
  3. Connecting device (4) according to one of Claims 1 and 2, characterized in that the lower edge (13) of a lateral wall (14) of the plug-in housing (7) is provided with a flared portion (13a) extending away from the first direction (I-I).
  4. Connecting device (4) according to Claim 3, characterized in that:
    - the lateral surface (10c) of the plug-in portion (10) comprises a hollow housing (15) with lateral edges (15a) extending substantially perpendicular to the second direction (II-II),
    - the flared portion (13a) comprises a protrusion (13b) intended to enter the said hollow housing (15) when the second part (8) is in the retracted position.
  5. Connecting device (4) according to any one of Claims 1 to 4, characterized in that the first (5) and the second (8) parts can be separated from one another by withdrawing the pivot pin (11) from the oblong slot (12) .
  6. Connecting device (4) according to Claim 5, characterized in that the pivot pin (11) comprises a radial stud (17, 18) giving the pivot pin (11) a portion with a cross section having at least one dimension (L11) greater than the width (L12) of the oblong slot (12).
  7. Connecting device (4) according to any one of Claims 1 to 6, characterized in that the pivot pin (11) is connected inseparably to the first part (5).
  8. Connecting device (4) according to Claim 7, characterized in that:
    - the pivot pin (11) is engaged slidingly in an hole (19) formed in the first part (5),
    - the pivot pin (11) comprises a radial stud (18) giving the pivot pin (11) a portion with a cross section having at least one dimension (L11) greater than the dimensions of the cross section of the said hole (19) formed in the first part (5).
  9. Connecting device (4) according to any one of Claims 1 to 8, characterized in that:
    - the first part (5) comprises a locking slot (20) passing through the housing (7) by extending in a fourth direction (IV-IV) perpendicular to the first direction (I-I), the said locking slot (20) aligning with the oblong slot (12) when the second part (8) is in the plugged-in position,
    - the connecting device (4) comprises a locking pin designed to be inserted simultaneously into the locking slot (20) and into the oblong slot (12) when the second part (8) is in the plugged-in position.
  10. Formwork assembly (1) comprising a formwork structure (2) defining a formwork plane (P), the said formwork structure (2) being connected to at least one supporting shore (3) by means of a connecting device (4) according to any one of Claims 1 to 9.
  11. Method for deploying a supporting shore (3) connected to a formwork structure (2) by a connecting device (4) according to any one of Claims 1 to 9 and initially arranged in a retracted position, the formwork plane (P) being substantially horizontal, characterized in that it comprises the following steps:
    a) moving the supporting shore (3) and the second part (8) in axial translational with respect to the first part (5) by bringing the pivot pin (11) to the first end (12a) of the oblong slot (12) in the second direction (II-II),
    b) moving the supporting shore (3) and the second part (8) rotationally with respect to the first part (5) about the pivot pin (11) until the second part (8) is brought into the withdrawn position,
    c) moving the supporting shore (3) and the second part (8) in axial translation with respect to the first part (5) so as to bring the second part (8) into the plugged-in position.
  12. Method according to Claim 11, characterized in that it comprises a step prior to step a), during which the supporting shore (3) and the second part (8) are moved relative to the first part (5) in rotation about the pivot pin (11) so as to move the lateral surface (10c) of the second part (8) away with respect to the lower edge (13) of a lateral wall (14) of the plugged-in housing (7).
  13. Method for folding a supporting shore (3) connected to a formwork structure (2) via a connecting device (4) according to any one of Claims 1 to 9 and initially arranged in a plugged-in position, the formwork plane (P) being substantially horizontal, characterized in that it comprises the following steps:
    A) moving the supporting shore (3) and the second part (8) in axial translation from the plugged-in position towards the withdrawn position while bringing the pivot pin (11) to the first end (12a) of the oblong slot (12) in the second direction (II-II),
    B) moving the supporting shore (3) and the second part (8) rotationally with respect to the first part (5) about the pivot pin (11) so as to bring the second direction (II-II) into an orientation substantially perpendicular to the first direction (I-I),
    C) moving the supporting shore (3) and the second part (8) in axial translation with respect to the first part (5) by causing the pivot pin (11) to slide in the oblong slot (12) in the direction of the second end (12b) until the second part (8) protrudes beyond the lower edge (13) of the lateral wall (14) of the plug-in housing (7),
    D) moving the supporting shore (3) and the second part (8) rotationally, or allowing these to rotate, with respect to the first part (5) about the pivot pin (11) so that the second part (8) comes to bear via the lateral surface (10c) against the lower edge (13) of a lateral wall (14) of the plug-in housing (7).
EP18170952.8A 2017-05-09 2018-05-07 Connecting device for a moulding table Active EP3401463B9 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1754063A FR3066208B1 (en) 2017-05-09 2017-05-09 BONDING DEVICE FOR FORMWORK TABLE

Publications (3)

Publication Number Publication Date
EP3401463A1 EP3401463A1 (en) 2018-11-14
EP3401463B1 EP3401463B1 (en) 2019-11-06
EP3401463B9 true EP3401463B9 (en) 2020-02-26

Family

ID=59649843

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18170952.8A Active EP3401463B9 (en) 2017-05-09 2018-05-07 Connecting device for a moulding table

Country Status (2)

Country Link
EP (1) EP3401463B9 (en)
FR (1) FR3066208B1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018123387A1 (en) * 2018-09-24 2020-03-26 Peri Gmbh SUPPORT HEAD, CEILING SUPPORT, CEILING SHIELDING AND METHOD FOR INSTALLING SUCH A CEILING SHELF
DE102021106138A1 (en) 2021-03-12 2022-09-15 Peri Se Support device, slab props, slab formwork system and method for stripping a slab formwork panel
DE202021101627U1 (en) 2021-03-26 2022-07-01 Peri Se connection component
CN113914616B (en) * 2021-11-04 2022-11-08 广东蕉岭建筑工程集团有限公司 Fixed subassembly of scissors formula stair design steel mould
EP4219864A1 (en) * 2022-01-31 2023-08-02 Ed. Züblin Aktiengesellschaft Support for temporary arrangement between two building components for dissipating loads into the building components

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT3975U1 (en) * 1999-05-17 2000-11-27 Dingler Gerhard HEAD CONNECTION FOR A PIPE SUPPORT
KR101013148B1 (en) * 2010-08-09 2011-02-10 (주)대우건설 Revolving Support of Table Form
FR3027932B1 (en) 2014-10-30 2018-03-02 Sateco ASSEMBLY OF A FOLDING STRUCTURE OF WORK IN ENCORBELLEMENT AND A PLURALITY OF ARTICULATED SUPPORT STAYS

Also Published As

Publication number Publication date
EP3401463A1 (en) 2018-11-14
FR3066208A1 (en) 2018-11-16
FR3066208B1 (en) 2019-06-14
EP3401463B1 (en) 2019-11-06

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