EP2381051B1 - Shoring Tower - Google Patents

Shoring Tower Download PDF

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Publication number
EP2381051B1
EP2381051B1 EP20110305480 EP11305480A EP2381051B1 EP 2381051 B1 EP2381051 B1 EP 2381051B1 EP 20110305480 EP20110305480 EP 20110305480 EP 11305480 A EP11305480 A EP 11305480A EP 2381051 B1 EP2381051 B1 EP 2381051B1
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EP
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Prior art keywords
ladder
tube
rod
elements
ladder element
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EP20110305480
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German (de)
French (fr)
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EP2381051A1 (en
Inventor
Bertrand Lamy
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Trium Invest
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Trium Invest
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    • 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
    • E04G7/00—Connections between parts of the scaffold
    • E04G7/30—Scaffolding bars or members with non-detachably fixed coupling elements
    • E04G7/301—Scaffolding bars or members with non-detachably fixed coupling elements for connecting bars or members which are parallel or in end-to-end relation
    • 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
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/18—Scaffolds primarily resting on the ground adjustable in height
    • E04G1/20—Scaffolds comprising upright members and provision for supporting cross-members or platforms at different positions therealong
    • 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
    • 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
    • E04G5/14—Railings
    • 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
    • E04G7/00—Connections between parts of the scaffold
    • E04G7/30—Scaffolding bars or members with non-detachably fixed coupling elements
    • E04G7/34—Scaffolding bars or members with non-detachably fixed coupling elements with coupling elements using positive engagement, e.g. hooks or pins

Definitions

  • the invention relates to the field of building, and more particularly that of shoring towers designed to support heavy loads during the construction of buildings, such as slab formwork.
  • the most popular shoring towers are of the "ladder tower” type. They consist of metal frames with vertical tubular uprights connected by horizontal bars spaced about 50 cm. These frames are called “scale frames”, and we superimpose a number of them, connecting two successive frames to one another, so as to obtain a shoring tower reaching the desired height.
  • the lower ladder frame uprights of each stack have screw adjustment jacks to compensate for unevenness of the floor, and screw jacks can also be placed at the upper ends of the uprights of the upper frames to support the load in a plane. horizontal or tilt adjusted.
  • the opposing and adjacent ladder frames are connected to each other by horizontal bars and / or slashes which hold them in parallel relation and ensure their verticality.
  • Platforms or floors are generally installed to rest on the rungs of ladder frames, so that staff can work at different levels of the tower, these platforms are equipped with hatches for staff to move from one level to another. other thanks to ladders. Railings are also placed to ensure the safety of personnel by forming obstacles in the intervals between said platforms.
  • the ladder elements and the adjacent railing elements are connected to each other by connector assemblies interposed between two common sections of the tower, and comprising means for interconnecting the vertical uprights of the successive ladder elements of the tower. such that they are vertically aligned, and means for interconnecting the vertical uprights of two successive railing members so that they are vertically aligned.
  • Means for connecting the railing elements to the ladder elements of the lower level are also provided. Locking systems for these connections are provided, which are preferably integral with the guardrail elements and therefore do not risk being misplaced during dismantling and transport of the elements of the shoring tower.
  • These locking systems each comprise in particular a bolt rod movable in horizontal translation which can penetrate into orifices formed on the one hand in the ends of the vertical uprights and on the other hand in plate connectors secured to the lower ends of the vertical uprights of the elements. railing.
  • a bolt rod movable in horizontal translation which can penetrate into orifices formed on the one hand in the ends of the vertical uprights and on the other hand in plate connectors secured to the lower ends of the vertical uprights of the elements. railing.
  • the object of the invention is to propose a new design of a shoring tower which, in relation to existing towers, makes it possible to speed up and simplify the assembly of the tower, while improving the safety conditions of the staff responsible for this purpose. assembly, and those of the staff who will have to work on the mounted tower.
  • Said rocker can be protected by a housing bearing said horizontal axis of the rocker.
  • the upper edge of said housing may comprise a beveling facilitating the guiding of the vertical tube of the upper ladder element when it fits on the rod of the lower ladder element.
  • the underside of said hook may comprise a beveling.
  • Said rocker can rotate about a horizontal axis integral with the horizontal rod and come into abutment against the horizontal rod during this rotation.
  • the shoring tower according to the invention can be mounted and stiffened by simple superpositions and interlocking of its elements, whose connection is effected automatically, in particular by rockers integrated with the guard elements.
  • This connection and its security therefore do not require at any time the intervention of an operator in the vicinity of the nesting location of the elements, and this eliminates any risk of forgetting security connections.
  • gear handling elements ensuring their guidance in vertical position fairly accurately, nesting elements and securing their connections can be made without the need for personnel to be present on the tower being installed, which has obvious advantages in terms of safety.
  • tubular elements are made of steel, for example steel E355 (EN10305-1 standard). But any other material having mechanical properties adapted to its use for making shoring tower elements would be usable.
  • the figure 1 shows a detail of an example of a shoring tower according to the invention being mounted, at a level where two successive stages of the tower (hereinafter lower floor and upper floor) are visible.
  • the lower floor is the lowest floor of the tower (called "access floor").
  • a ladder element 1 This classically comprises two vertical tubes 2, 2 '(only one of which is visible on the figure 1 connected to each other by horizontal bars 3, 3 ', 3 "Each tube 2, 2' has an upper end 4 adapted to receive an upper rod 5 or a lower rod 5 ', said rod 5, 5 'being integral with the plate 15 which will be described later
  • the rods 5, 5' are of square section (in the example shown) and are inscribed in a circle whose diameter is little less than the internal diameter of the elements
  • the tubular elements of the ladder elements will be located around the upper rod 5 at a later point in a tube 22 of the ladder element 6 of the upper stage 5.
  • the lower rod 5 ' is received inside the vertical tube 2 of the lower ladder element 1.
  • the guardrail element 11 also comprises, according to the invention, a plate 15 which extends towards the outside of the shoring tower the lower end of the railing element 11.
  • This plate 15 is, in the preferred example shown, secured to the lower faces and ends of the rail 13 and the vertical tube 12.
  • the plate 15 also has at its free end 16 the upper vertical rods 5 and 5 'below which we have already spoken, on which are intended to be fitted with the ends 2, 22 of the tubes 1, 6. After this fitting, the lower face of the plate 15 rests on the end 4 of the vertical tube 2 of the lower ladder element 1.
  • rocker 17 which is fixed to the upper railing member 11. This rocker 17 can rotate about a horizontal axis 18 passing through a housing 19 extending the vertical tube 12 of the railing element 11. At its upper part, the rocker 17 has a bulge 20 facing outwardly of the shoring tower. At its lower part, the rocker 17 comprises a hook 21, facing the lower ladder element 1. The balancing of these different elements ensures that when the upper guard element 12 is not facing the an upper scale element 6, the bulge 20 emerges from the housing 19 and the hook 21 is set back from the lower ladder element 1 (as shown in FIG. figure 1 ). There is of course a similar rocker at each lower right or left end of a guard element except possibly for the access stage.
  • the housing 19 is not absolutely mandatory, it is sufficient that the axis 18 of the rocker 17 is connected by a one way or another to the vertical tube 12 of the railing element. But the casing 19 makes it possible to protect the rocker 17 during handling of the railing element 11 and can also provide a guiding function for the tube of the upper ladder element 22 when it is interlocked on the rod 5.
  • the hook of a rocker of the corresponding upper guard element penetrates into an orifice 23 'of the tube 2' of the element lower scale 1.
  • a bevelling 24 of the upper edge of the casing 19 facilitates the guiding of the upper ladder element 6 when it fits onto the rod 5 of the lower ladder element 1.
  • a bevelling 25 of the lower face of the hook 21 facilitates its insertion into the orifice 23.
  • the lower ladder elements are secured to the guardrail elements of the next higher stage, by a simple operation of interlocking the upper ladder elements on the lower ladder elements, without any human intervention.
  • Separate additional devices presenting the risk of being misplaced, or especially not to be put in place as a result of the negligence of the operators in charge of mounting the tower.
  • the figure 3 shows, as we said, the elements of the access floor of the tower, so the floor resting on the ground.
  • the notch 28 is oriented downwards to allow the connection of the railing element 7 to the ladder element 1 in this order.
  • the notch 28 is oriented upwards to allow in this order the connection of the tube 2 "of the ladder element on the railing element of the same level already mounted.
  • the rod 30 carries at its free end a rocker 31 which ensures that relative lateral movements of guardrail and ladder elements will not lead to a release of the rod 30 out of the notch 28.
  • the locking of the connection elements of the tower is thus also realized at this level.
  • This rocker 31 is movable about a horizontal axis 32 to not represent an obstacle when mounting the tower and limit its risk of deformation during an impact.
  • the rocker 31 must, of course, abut against the rod 30 so that this rotation is interrupted and the locking of the connection continues to be assured.
  • a clearance of the rod 30 out of the notch 28 is therefore possible only during a vertical movement of the ladder frame member, so during disassembly of the tower.
  • this connection also serves to take up the lateral forces exerted by the different elements on each other. This provides a better distribution of the forces exerted on the various elements of the tower, and this improves the stability and security of the assembly.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Ladders (AREA)

Description

L'invention concerne le domaine du bâtiment, et plus particulièrement celui des tours d'étaiement destinées à supporter des charges importantes lors de la construction d'immeubles, telles que des coffrages de dalles.The invention relates to the field of building, and more particularly that of shoring towers designed to support heavy loads during the construction of buildings, such as slab formwork.

Les tours d'étaiement les plus répandues sont du type dit «tour échelle ». Elles sont constituées de cadres métalliques comportant des montants tubulaires verticaux reliés par des barres horizontales espacées de 50 cm environ. Ces cadres sont dits « cadres échelles », et on en superpose un certain nombre, en connectant l'un à l'autre deux cadres successifs, de manière à obtenir une tour d'étaiement atteignant la hauteur désirée. Les montants du cadre échelle inférieur de chaque empilement comportent des vérins de réglage à vis pour compenser les inégalités du sol, et on peut également placer des vérins à vis aux extrémités supérieures des montants des cadres supérieurs, de manière à supporter la charge dans un plan horizontal ou d'inclinaison ajustée.The most popular shoring towers are of the "ladder tower" type. They consist of metal frames with vertical tubular uprights connected by horizontal bars spaced about 50 cm. These frames are called "scale frames", and we superimpose a number of them, connecting two successive frames to one another, so as to obtain a shoring tower reaching the desired height. The lower ladder frame uprights of each stack have screw adjustment jacks to compensate for unevenness of the floor, and screw jacks can also be placed at the upper ends of the uprights of the upper frames to support the load in a plane. horizontal or tilt adjusted.

Les cadres échelles opposés et voisins, de même rang dans leurs empilements respectifs, sont reliés l'un à l'autre par des barres horizontales et/ou par des barres obliques qui les maintiennent en relation parallèle et assurent leur verticalité.The opposing and adjacent ladder frames, of the same rank in their respective stacks, are connected to each other by horizontal bars and / or slashes which hold them in parallel relation and ensure their verticality.

Des plateformes ou planchers sont installés en général de manière à reposer sur les barreaux des cadres échelles, pour que le personnel puisse travailler aux différents niveaux de la tour, ces plateformes étant munies de trappes pour que le personnel puisse passer d'un niveau à l'autre grâce à des échelles. Des garde-corps sont également posés pour assurer la sécurité du personnel en formant des obstacles dans les intervalles séparant lesdites plateformes.Platforms or floors are generally installed to rest on the rungs of ladder frames, so that staff can work at different levels of the tower, these platforms are equipped with hatches for staff to move from one level to another. other thanks to ladders. Railings are also placed to ensure the safety of personnel by forming obstacles in the intervals between said platforms.

Une tour d'étaiement d'un type particulier est décrite dans le document WO-A-2008/020138 . Cette tour présente la particularité de pouvoir être montée de façon simple, en utilisant une relativement faible quantité de petites pièces de connexion des divers éléments les uns aux autres qui rendent habituellement la construction de la tour complexe et fastidieuse. Ces petites pièces risquent aussi facilement d'être égarées. Cette relative facilité de montage est obtenue en prévoyant, pour chaque étage ou « section courante » de la tour quatre éléments distincts et assemblables les uns aux autres, à savoir :

  • deux « cadres échelles », ou « éléments d'échelle », de constitution comparable à celle des cadres échelles classiques ;
  • et deux « éléments de garde-corps » comportant chacun deux éléments verticaux raccordés par des lisses obliques et/ou horizontales ; ces lisses, en particulier les lisses horizontales, outre qu'elles assurent la rigidité des éléments de garde-corps, jouent également un rôle de prévention des chutes pour le personnel.
A shoring tower of a particular type is described in the document WO-2008/020138 . This tower has the particularity of being able to be mounted in a simple way, using a relatively small amount of small connecting pieces of the various elements to each other which usually make the construction of the tower complex and tedious. These small pieces can also be easily misplaced. This relative ease of assembly is obtained by providing, for each floor or "current section" of the tower four separate and assemblable elements to each other, namely:
  • two "ladder frames", or "ladder elements", of a constitution comparable to that of classical ladder frames;
  • and two "guardrail elements" each comprising two vertical elements connected by oblique and / or horizontal slats; these rails, in particular the horizontal rails, in addition to ensuring the rigidity of railing elements, also play a fall prevention role for the personnel.

Les éléments d'échelle et les éléments de garde-corps voisins sont connectés les uns aux autres par des ensembles connecteurs interposés entre deux sections courantes de la tour, et comprenant des moyens pour relier entre eux les montants verticaux des éléments d'échelle successifs de telle manière qu'ils soient alignés verticalement, et des moyens pour relier entre eux les montants verticaux de deux éléments de garde-corps successifs de telle manière qu'ils soient alignés verticalement. Des moyens de connexion des éléments de garde-corps aux éléments d'échelle du niveau inférieur sont aussi prévus. Des systèmes de verrouillage de ces connexions sont prévus, qui sont de préférence solidaires des éléments de garde-corps et ne risquent donc pas d'être égarés lors du démontage et du transport des éléments de la tour d'étaiement. Ces systèmes de verrouillage comportent notamment chacun une tige de verrou mobile en translation horizontale pouvant pénétrer dans des orifices ménagés d'une part dans les extrémités des montants verticaux et d'autre part dans des connecteurs de platines solidaires des extrémités inférieures des montants verticaux des éléments de garde-corps. Pour plus de détails, on pourra se reporter à WO-A-2008/020138 .The ladder elements and the adjacent railing elements are connected to each other by connector assemblies interposed between two common sections of the tower, and comprising means for interconnecting the vertical uprights of the successive ladder elements of the tower. such that they are vertically aligned, and means for interconnecting the vertical uprights of two successive railing members so that they are vertically aligned. Means for connecting the railing elements to the ladder elements of the lower level are also provided. Locking systems for these connections are provided, which are preferably integral with the guardrail elements and therefore do not risk being misplaced during dismantling and transport of the elements of the shoring tower. These locking systems each comprise in particular a bolt rod movable in horizontal translation which can penetrate into orifices formed on the one hand in the ends of the vertical uprights and on the other hand in plate connectors secured to the lower ends of the vertical uprights of the elements. railing. For more details, we can refer to WO-2008/020138 .

Pour autant, le système décrit dans WO-A-2008/020138 n'est pas idéal, en ce qu'il nécessite toujours l'exécution d'une série d'opérations manuelles pour le verrouillage des éléments les uns aux autres, ces opérations manuelles devant être exécutées par les monteurs de la tour. Il faut s'assurer qu'aucune de ces opérations de verrouillage n'a été oubliée pour garantir la rigidité de la tour. Ces opérations prennent du temps et nécessitent que les monteurs travaillent sur la tour alors que celle-ci n'a pas encore forcément atteint sa rigidité et sa stabilité optimales.However, the system described in WO-2008/020138 is not ideal, in that it always requires the execution of a series of manual operations for the locking of the elements to each other, these manual operations to be performed by the editors of the tower. It must be ensured that none of these locking operations have been forgotten to guarantee the rigidity of the tower. These operations take time and require the assemblers to work on the tower while it has not yet achieved its optimum rigidity and stability.

Le but de l'invention est de proposer une nouvelle conception de tour d'étaiement permettant, par rapport aux tours existantes, d'accélérer et de simplifier encore le montage de la tour, tout en améliorant les conditions de sécurité du personnel chargé de ce montage, et celles du personnel qui aura à travailler sur la tour montée.The object of the invention is to propose a new design of a shoring tower which, in relation to existing towers, makes it possible to speed up and simplify the assembly of the tower, while improving the safety conditions of the staff responsible for this purpose. assembly, and those of the staff who will have to work on the mounted tower.

A cet effet, l'invention a pour objet une tour d'étaiement comportant une superposition de niveaux formés chacun par deux éléments d'échelle comportant chacun des tubes verticaux raccordés par des barreaux horizontaux et deux éléments de garde-corps comportant chacun des tubes verticaux reliés au moins par des lisses horizontales supérieure et inférieure, et des moyens de connexion entre des éléments d'un étage inférieur et d'un étage supérieur de la tour d'étaiement, caractérisée en ce que lesdits moyens de connexion comportent dans les zones où ont lieu lesdites connexions :

  • une platine solidaire de la face inférieure de la lisse horizontale inférieure de l'élément de garde-corps du niveau supérieur et s'étendant vers l'extérieur de la tour d'étaiement, ladite platine étant destinée à reposer sur l'extrémité supérieure d'un tube vertical de l'élément d'échelle du niveau inférieur, et comportant à son extrémité libre deux tiges verticales supérieure et inférieure sur lesquelles peuvent s'emmancher respectivement un tube vertical de l'élément d'échelle du niveau supérieur et un tube vertical de l'élément d'échelle du niveau inférieur, de façon à ce que le tube de l'élément d'échelle du niveau supérieur vienne reposer sur la face supérieure de la platine après avoir été emmanché sur ladite tige supérieure ;
  • un basculeur connecté au tube vertical de l'élément de garde-corps du niveau supérieur, pouvant tourner autour d'un axe horizontal et comportant à son extrémité inférieure un crochet, et dont la géométrie est conçue pour que, lorsque le tube de l'élément d'échelle supérieur est emboîté sur la tige supérieure de la platine, le tube de l'élément d'échelle supérieur provoque la rotation du basculeur et la pénétration du crochet dans un orifice du tube de l'élément d'échelle inférieur.
For this purpose, the subject of the invention is a shoring tower comprising a superposition of levels each formed by two scale elements each comprising vertical tubes connected by horizontal bars and two guardrail elements each comprising vertical tubes. connected at least by upper and lower horizontal rails, and connection means between elements of a lower floor and an upper floor of the shoring tower, characterized in that said connection means comprise in areas where these connections take place:
  • a plate integral with the lower face of the lower horizontal rail of the guardrail element of the upper level and extending towards the outside of the tower shoring, said platen being intended to rest on the upper end of a vertical tube of the ladder element of the lower level, and having at its free end two upper and lower vertical rods on which can be set respectively a vertical tube of the ladder element of the upper level and a vertical tube of the ladder element of the lower level, so that the tube of the ladder element of the upper level comes to rest on the face upper platen after being fitted on said upper rod;
  • a rocker connected to the vertical tube of the guardrail element of the upper level, rotatable about a horizontal axis and having at its lower end a hook, and whose geometry is designed so that, when the tube of the upper ladder member is fitted on the upper rod of the plate, the tube of the upper ladder element causes the rotation of the rocker and the penetration of the hook into a hole of the tube of the lower ladder element.

Ledit basculeur peut être protégé par un boîtier portant ledit axe horizontal du basculeur.Said rocker can be protected by a housing bearing said horizontal axis of the rocker.

Le bord supérieur dudit boîtier peut comporter un biseautage facilitant le guidage du tube vertical de l'élément d'échelle supérieur lors de son emboîtement sur la tige de l'élément d'échelle inférieur.The upper edge of said housing may comprise a beveling facilitating the guiding of the vertical tube of the upper ladder element when it fits on the rod of the lower ladder element.

La face inférieure dudit crochet peut comporter un biseautage.The underside of said hook may comprise a beveling.

Lesdits moyens de connexion peuvent comporter également, dans les zones où ont lieu lesdites connexions :

  • une plaque en forme de U fixée sur le tube vertical de l'élément de garde-corps inférieur et tournée vers l'extérieur de la tour d'étaiement, un bord supérieur ou inférieur de cette plaque comportant une encoche ;
  • une tige horizontale solidaire du tube vertical de l'élément d'échelle inférieur faisant face au tube de l'élément de garde-corps inférieur ;
    ladite tige pouvant s'insérer dans ladite encoche lorsque l'élément d'échelle inférieur est emboîté sur l'élément d'échelle qui lui est inférieur ou lorsque l'élément de garde-corps supérieur est placé sur l'élément d'échelle qui lui est inférieur, et en ce que ladite tige horizontale comporte à son extrémité libre un basculeur assurant le verrouillage de la tige dans l'encoche lors des déplacements latéraux relatifs de l'élément de garde-corps inférieur et de l'élément d'échelle inférieur.
Said connection means may also comprise, in the zones where said connections take place:
  • a U-shaped plate fixed to the vertical tube of the lower railing element and facing outwardly of the shoring tower, an upper or lower edge of this plate having a notch;
  • a horizontal rod integral with the vertical tube of the lower ladder element facing the tube of the lower railing element;
    said rod being insertable into said notch when the lower ladder member is fitted to the ladder member which is below it or when the upper railing member is placed on the ladder member which is it is lower, and in that said horizontal rod has at its free end a rocker ensuring the locking of the rod in the notch during relative lateral displacements of the lower guard element and the ladder element inferior.

Ledit basculeur peut tourner autour d'un axe horizontal solidaire de la tige horizontale et venir en butée contre la tige horizontale lors de cette rotation.Said rocker can rotate about a horizontal axis integral with the horizontal rod and come into abutment against the horizontal rod during this rotation.

Comme on l'aura compris, la tour d'étaiement selon l'invention peut être montée et rigidifiée par de simples superpositions et emboîtements de ses éléments, dont la connexion s'effectue de façon automatique, notamment par des basculeurs intégrés aux éléments de garde-corps et dont des extrémités viennent pénétrer dans des orifices pratiqués dans les tubes des éléments d'échelle du niveau inférieur, sous l'action des éléments d'échelle du même niveau eux-mêmes lors de leur emboîtement sur les éléments d'échelle du niveau inférieur. Cette connexion et sa sécurisation ne nécessitent donc à aucun moment l'intervention d'un opérateur au voisinage du lieu d'emboîtement des éléments, et cela supprime tout risque d'oubli de sécurisation des connexions.As will have been understood, the shoring tower according to the invention can be mounted and stiffened by simple superpositions and interlocking of its elements, whose connection is effected automatically, in particular by rockers integrated with the guard elements. -body and whose ends come into the orifices made in the tubes of the ladder elements of the lower level, under the action of ladder elements of the same level themselves when they interlock on the scale elements of the lower level. This connection and its security therefore do not require at any time the intervention of an operator in the vicinity of the nesting location of the elements, and this eliminates any risk of forgetting security connections.

A la différence de la tour d'étaiement décrite dans WO-A-2008/020138 , a fortiori des tours d'étaiement antérieurement connues, aucun organe indépendant des éléments constitutifs principaux de la tour, à savoir les éléments d'échelle et les éléments de garde-corps, n'est nécessaire pour compléter le montage de la tour en verrouillant les connexions des éléments les uns aux autres. Il n'y a donc pas de risque de perdre de tels éléments, ou, pire, d'oublier de les utiliser, ce qui compromettrait la sécurité du personnel lors de l'utilisation de la tour.Unlike the shoring tower described in WO-2008/020138 a fortiori shoring towers previously known, no independent member of the main components of the tower, namely ladder elements and railing elements, is necessary to complete the assembly of the tower by locking the connections of the elements to each other. So there is no risk of losing such items, or, worse, forget to use them, which would compromise the safety of staff when using the tower.

Egalement, si on dispose d'engins de manutention des éléments assurant leur guidage en position verticale de façon assez précise, l'emboîtement des éléments et la sécurisation de leurs connexions peuvent s'effectuer sans qu'il soit nécessaire que du personnel soit présent sur la tour en cours de montage, ce qui présente des avantages évidents en termes de sécurité.Also, if there are gear handling elements ensuring their guidance in vertical position fairly accurately, nesting elements and securing their connections can be made without the need for personnel to be present on the tower being installed, which has obvious advantages in terms of safety.

De manière générale, la présence du basculeur muni d'un crochet, dont le basculement est automatique, entraine le verrouillage des éléments d'échelle voisins les uns aux autres. L'ensemble des éléments composant la structure de la tour est ainsi rendu solidaire, et peut être manipulé par une grue à l'état monté.In general, the presence of the rocker equipped with a hook, whose tilting is automatic, causes the locking ladder elements adjacent to each other. All the components of the structure of the tower is thus secured, and can be manipulated by a crane in the mounted state.

L'invention sera mieux comprise à la lecture de la description qui suit, donnée en référence aux figures annexées suivantes :

  • la figure 1 qui montre en vue de face un détail d'un étage d'une tour d'étaiement selon l'invention en cours de montage ;
  • la figure 2 qui montre ce même détail de la tour d'étaiement en fin de montage dudit étage ;
  • la figure 3 qui montre en perspective ce même étage de la tour d'étaiement dans la configuration représentée sur la figure 1 ;
  • la figure 4 qui représente un détail de la tour montrant un dispositif additionnel participant au verrouillage d'un élément d'échelle sur un élément de garde-corps de la tour.
The invention will be better understood on reading the description which follows, given with reference to the following appended figures:
  • the figure 1 which shows in front view a detail of a floor of a shoring tower according to the invention being assembled;
  • the figure 2 which shows the same detail of the shoring tower at the end of the assembly of said floor;
  • the figure 3 which shows in perspective this same floor of the shoring tower in the configuration shown on the figure 1 ;
  • the figure 4 which represents a detail of the tower showing an additional device participating in the locking of a ladder element on a railing element of the tower.

Il doit être entendu que lorsqu'on parlera, dans la description qui suit, de « tubes » ou d' « éléments tubulaires », il doit être compris que ce terme ne représente littéralement que le cas le plus évident de mise en oeuvre de l'invention. Des éléments généralement pleins, n'ayant une constitution tubulaire que dans leurs portions où cela serait nécessaire, par exemple pour y emboîter un autre élément, seraient des équivalents fonctionnels rigoureux à des éléments entièrement tubulaires et entreraient également dans le cadre de l'invention.It must be understood that when the following description refers to "tubes" or "tubular elements", it must be understood that this term literally represents only the most obvious case of implementation of the invention. 'invention. Generally solid elements, having a tubular constitution only in their portions where it would be necessary, for example to fit another element, would be rigorous functional equivalents to fully tubular elements and would also fall within the scope of the invention.

Le plus couramment, ces éléments tubulaires sont réalisés en acier, par exemple en acier E355 (norme EN10305-1). Mais tout autre matériau présentant des propriétés mécaniques adaptées à son utilisation pour fabriquer des éléments de tours d'étaiement serait utilisable.Most commonly, these tubular elements are made of steel, for example steel E355 (EN10305-1 standard). But any other material having mechanical properties adapted to its use for making shoring tower elements would be usable.

La figure 1 montre un détail d'un exemple d'une tour d'étaiement selon l'invention en cours de montage, à un niveau où deux étages successifs de la tour (dits par la suite étage inférieur et étage supérieur) sont visibles. Dans l'exemple représenté sur les figures 1 à 3, l'étage inférieur est l'étage le plus bas de la tour (dit « étage d'accès »).The figure 1 shows a detail of an example of a shoring tower according to the invention being mounted, at a level where two successive stages of the tower (hereinafter lower floor and upper floor) are visible. In the example shown on the Figures 1 to 3 , the lower floor is the lowest floor of the tower (called "access floor").

L'un des éléments de l'étage inférieur de la tour représentée est un élément d'échelle 1. Celui-ci comporte classiquement deux tubes verticaux 2, 2' (dont l'un seulement 2 est visible sur la figure 1) connectés l'un à l'autre par des barres horizontales 3, 3',3". Chaque tube 2, 2' a une extrémité supérieure 4 conçue pour recevoir une tige supérieure 5 ou une tige inférieure 5', ladite tige 5, 5' étant solidaire de la platine 15 qui sera décrite plus loin. Les tiges 5, 5' sont de section carrée (dans l'exemple représenté) et s'inscrivent dans un cercle dont le diamètre est de peu inférieur au diamètre interne des éléments tubulaires des éléments d'échelle. C'est autour de la tige supérieure 5 qu'aura lieu ultérieurement l'emboîtement d'un tube 22 de l'élément d'échelle 6 de l'étage supérieur. La tige inférieure 5' est reçue à l'intérieur du tube vertical 2 de l'élément d'échelle inférieur 1.One of the elements of the lower stage of the tower shown is a ladder element 1. This classically comprises two vertical tubes 2, 2 '(only one of which is visible on the figure 1 connected to each other by horizontal bars 3, 3 ', 3 "Each tube 2, 2' has an upper end 4 adapted to receive an upper rod 5 or a lower rod 5 ', said rod 5, 5 'being integral with the plate 15 which will be described later The rods 5, 5' are of square section (in the example shown) and are inscribed in a circle whose diameter is little less than the internal diameter of the elements The tubular elements of the ladder elements will be located around the upper rod 5 at a later point in a tube 22 of the ladder element 6 of the upper stage 5. The lower rod 5 'is received inside the vertical tube 2 of the lower ladder element 1.

Deux autres éléments représentés de l'étage inférieur de la tour sont des éléments de garde-corps 7, 7', rattachés chacun à l'une des extrémités de l'élément d'échelle 1. L'élément de garde-corps 7, à savoir celui situé dans le plan des figures 1 et 2 et le plus proche de l'observateur sur la figure 3, comporte les éléments suivants, qui ont leurs correspondants sur l'autre élément de garde corps 7' :

  • deux tubes verticaux, dont un seul 8 est visible sur les figures ;
  • une lisse horizontale 9 reliant le tube vertical 8 à son symétrique situé de l'autre côté de l'élément de garde-corps 7 ;
  • préférentiellement un tube 10 reliant obliquement le tube vertical 8 et la lisse 9 pour accroître la rigidité de l'élément de garde-corps 7 et reprendre une partie des efforts latéraux qu'il subit.
Two other elements represented in the lower stage of the tower are railing elements 7, 7 ', each attached to one end of the ladder element 1. The guardrail element 7, namely the one located in the plane of figures 1 and 2 and the closest to the observer on the figure 3 , has the following elements, which have their corresponding on the other guard element 7 ':
  • two vertical tubes, only one of which is visible in the figures;
  • a horizontal rail 9 connecting the vertical tube 8 to its symmetrical located on the other side of the railing element 7;
  • preferably a tube 10 obliquely connecting the vertical tube 8 and the rail 9 to increase the rigidity of the guardrail member 7 and take some of the lateral forces it undergoes.

On voit également sur les figures 1, 2 et 3 l'élément de garde-corps 11 de l'étage supérieur de la tour situé dans le plan des figures 1 et 2 et le plus proche de l'observateur sur la figure 3, qui comporte :

  • deux tubes verticaux dont un seul 12 est visible sur les figures ;
  • une lisse horizontale 13 reliant le tube vertical 12 à son symétrique situé de l'autre côté de l'élément de garde-corps 11 ;
  • visible sur la figure 3 uniquement, un tube horizontal 14 reliant également le tube vertical 12 à son symétrique situé de l'autre côté de l'élément de garde-corps 11 et permettant d'assurer d'une part la rigidité de l'élément de garde-corps 11, et d'autre part la sécurité du personnel en barrant l'espace vide situé entre les tubes verticaux 12 de l'élément de garde-corps 11.
We also see on figures 1 , 2 and 3 the railing element 11 of the upper floor of the tower located in the plane of the figures 1 and 2 and the closest to the observer on the figure 3 , which includes :
  • two vertical tubes of which only one 12 is visible in the figures;
  • a horizontal rail 13 connecting the vertical tube 12 to its symmetrical located on the other side of the railing element 11;
  • visible on the figure 3 only, a horizontal tube 14 also connecting the vertical tube 12 to its symmetrical located on the other side of the railing element 11 and to ensure on the one hand the rigidity of the guardrail element 11 and on the other hand the safety of the personnel by blocking the empty space between the vertical tubes 12 of the guardrail element 11.

L'élément de garde-corps 11 comporte également, selon l'invention, une platine 15 qui prolonge vers l'extérieur de la tour d'étaiement l'extrémité inférieure de l'élément de garde-corps 11. Cette platine 15 est, dans l'exemple préféré représenté, solidaire des faces et extrémités inférieures de la lisse 13 et du tube vertical 12. La platine 15 comporte également à son extrémité libre 16 les tiges verticales supérieure 5 et inférieure 5' dont on a déjà parlé, sur lesquelles sont destinées à être emmanchées les extrémités 2, 22 des tubes 1, 6. Après cet emmanchement, la face inférieure de la platine 15 repose sur l'extrémité 4 du tube vertical 2 de l'élément d'échelle inférieur 1. On retrouve bien entendu une platine similaire à chaque extrémité inférieure droite ou gauche d'un élément de garde corps, à part éventuellement pour l'étage d'accès de la tour.The guardrail element 11 also comprises, according to the invention, a plate 15 which extends towards the outside of the shoring tower the lower end of the railing element 11. This plate 15 is, in the preferred example shown, secured to the lower faces and ends of the rail 13 and the vertical tube 12. The plate 15 also has at its free end 16 the upper vertical rods 5 and 5 'below which we have already spoken, on which are intended to be fitted with the ends 2, 22 of the tubes 1, 6. After this fitting, the lower face of the plate 15 rests on the end 4 of the vertical tube 2 of the lower ladder element 1. We find again well heard a similar plate at each bottom right or left end of a guard element, except possibly for the access stage of the tower.

Un autre élément important de l'invention est un basculeur 17 qui est fixé à l'élément de garde-corps supérieur 11. Ce basculeur 17 peut tourner autour d'un axe horizontal 18 traversant un boîtier 19 prolongeant le tube vertical 12 de l'élément de garde-corps 11. A sa partie supérieure, le basculeur 17 comporte un renflement 20 tourné vers l'extérieur de la tour d'étaiement. A sa partie inférieure, le basculeur 17 comporte un crochet 21, faisant face à l'élément d'échelle inférieur 1. L'équilibrage de ces différents éléments assure que lorsque l'élément de garde-corps supérieur 12 ne se trouve pas face à un élément d'échelle supérieur 6, le renflement 20 émerge du boîtier 19 et le crochet 21 est en retrait de l'élément d'échelle inférieur 1 (cas représenté sur la figure 1). On retrouve bien entendu un basculeur similaire à chaque extrémité inférieure droite ou gauche d'un élément de garde corps sauf éventuellement pour l'étage d'accès. La présence du boîtier 19 n'est pas absolument obligatoire, il suffit que l'axe 18 du basculeur 17 soit relié d'une manière ou d'une autre au tube vertical 12 de l'élément de garde-corps. Mais le boîtier 19 permet de protéger le basculeur 17 lors des manutentions de l'élément de garde-corps 11 et peut également assurer une fonction de guidage du tube de l'élément d'échelle supérieur 22 lors de son emboîtement sur la tige 5.Another important element of the invention is a rocker 17 which is fixed to the upper railing member 11. This rocker 17 can rotate about a horizontal axis 18 passing through a housing 19 extending the vertical tube 12 of the railing element 11. At its upper part, the rocker 17 has a bulge 20 facing outwardly of the shoring tower. At its lower part, the rocker 17 comprises a hook 21, facing the lower ladder element 1. The balancing of these different elements ensures that when the upper guard element 12 is not facing the an upper scale element 6, the bulge 20 emerges from the housing 19 and the hook 21 is set back from the lower ladder element 1 (as shown in FIG. figure 1 ). There is of course a similar rocker at each lower right or left end of a guard element except possibly for the access stage. The presence of the housing 19 is not absolutely mandatory, it is sufficient that the axis 18 of the rocker 17 is connected by a one way or another to the vertical tube 12 of the railing element. But the casing 19 makes it possible to protect the rocker 17 during handling of the railing element 11 and can also provide a guiding function for the tube of the upper ladder element 22 when it is interlocked on the rod 5.

Lorsque l'élément d'échelle supérieur 6 est emboîté sur la tige 5 de l'élément d'échelle inférieur 1, la face externe de son élément tubulaire 22 descend entre la tige 5 et le boîtier 19 du basculeur 17 de l'élément de garde-corps supérieur. Elle rencontre alors le renflement 20 du basculeur 17, et exerce sur lui une pression qui provoque une rotation du basculeur 17 autour de son axe 18. Sous l'effet de cette rotation, le crochet 21 se rapproche de l'élément d'échelle inférieur 1, et lorsque l'élément d'échelle supérieur est en place, c'est-à-dire lorsque l'extrémité inférieure de son élément tubulaire 22 vient reposer sur la platine 15, le crochet 21 pénètre dans un orifice correspondant 23 ménagé dans la tige verticale 2 de l'élément d'échelle inférieur 1 (cas de la figure 2). A l'autre extrémité de l'élément d'échelle 1, de la même façon, le crochet d'un basculeur de l'élément de garde corps supérieur correspondant vient pénétrer dans un orifice 23' du tube 2' de l'élément d'échelle inférieur 1. Il en va de même aux autres extrémités des éléments d'échelle supérieurs de l'étage de la tour concerné. De préférence, un biseautage 24 du bord supérieur du boîtier 19 permet de faciliter le guidage de l'élément d'échelle supérieur 6 lors de son emmanchement sur la tige 5 de l'élément d'échelle inférieur 1. Egalement, un biseautage 25 de la face inférieure du crochet 21 facilite son introduction dans l'orifice 23.When the upper ladder element 6 is fitted on the rod 5 of the lower ladder element 1, the outer face of its tubular element 22 descends between the rod 5 and the casing 19 of the rocker 17 of the upper railing. It then meets the bulge 20 of the rocker 17, and exerts on it a pressure which causes a rotation of the rocker 17 about its axis 18. Under the effect of this rotation, the hook 21 approaches the lower scale element 1, and when the upper ladder element is in place, that is to say when the lower end of its tubular element 22 comes to rest on the plate 15, the hook 21 enters a corresponding orifice 23 formed in the vertical rod 2 of the lower ladder element 1 (case of the figure 2 ). At the other end of the ladder element 1, in the same way, the hook of a rocker of the corresponding upper guard element penetrates into an orifice 23 'of the tube 2' of the element lower scale 1. The same applies to the other ends of the upper ladder elements of the stage of the tower concerned. Preferably, a bevelling 24 of the upper edge of the casing 19 facilitates the guiding of the upper ladder element 6 when it fits onto the rod 5 of the lower ladder element 1. Also, a bevelling 25 of the lower face of the hook 21 facilitates its insertion into the orifice 23.

De cette façon, on assure le verrouillage des éléments d'échelle inférieurs aux éléments de garde-corps de l'étage immédiatement supérieur, et ce par une simple opération d'emboîtement des éléments d'échelle supérieurs sur les éléments d'échelle inférieurs, sans aucune intervention humaine. On obtient ainsi un montage et une solidarisation rapides et sûrs de la tour d'étaiement, à l'aide d'organes qui sont totalement intégrés de construction aux éléments d'échelle et de garde-corps et ne nécessitent pas l'utilisation de pièces additionnelles séparées présentant le risque d'être égarées, ou surtout de ne pas être mises en place par suite d'une négligence des opérateurs chargés du montage de la tour.In this way, the lower ladder elements are secured to the guardrail elements of the next higher stage, by a simple operation of interlocking the upper ladder elements on the lower ladder elements, without any human intervention. This results in a fast and safe mounting and securing of the shoring tower, using components that are fully integrated with the ladder and railing elements and do not require the use of parts. Separate additional devices presenting the risk of being misplaced, or especially not to be put in place as a result of the negligence of the operators in charge of mounting the tower.

Pour le démontage de la tour, il suffit de procéder à l'opération inverse. Là encore, si les dimensions et emplacements respectifs des différents éléments qui ont été décrits sont bien calculés, ce qui est à la portée de l'homme du métier, aucune intervention humaine au niveau des dispositifs de verrouillage n'est nécessaire pour le démontage de la tour. Lors du démontage d'un étage de la tour, on retire en premier le cadre échelle supérieur 6, et les basculeurs 17 retournent à leur position initiale sous l'effet de leur propre poids. Les crochets 21 se retirent donc des orifices 23 du montant 2 du cadre échelle inférieur 1. Le garde corps supérieur 11 peut être retiré à son tour.To dismantle the tower, simply proceed to the opposite operation. Again, if the respective dimensions and locations of the various elements that have been described are well calculated, which is within the reach of those skilled in the art, no human intervention at the level of the locking devices is necessary for the dismantling of tower. When dismounting a stage of the tower, the upper ladder frame 6 is removed first, and the rockers 17 return to their initial position under the effect of their own weight. The hooks 21 are withdrawn from the orifices 23 of the upright 2 of the lower scale frame 1. The upper guard 11 can be removed in turn.

Avantageusement, la solidification de la tour peut être complétée, comme représenté, par les dispositifs suivants, visibles particulièrement sur les figures 3 et 4. Ces dispositifs consistent en :

  • une plaque 26, par exemple en forme de U, fixée, par exemple par soudage, sur le tube vertical 8 de l'élément de garde-corps inférieur 7 et tournée vers l'extérieur de la tour d'étaiement ; le ou les bords inférieur(s) (figure 3) ou supérieur(s) (figure 4) 27 de cette plaque comporte(nt) une encoche 28 , dont l'un des bords 29 est, de préférence, biseauté ;
  • une tige horizontale 30 solidaire du tube vertical 2, 2" de l'élément d'échelle inférieur 1 faisant face au tube 8 de l'élément de garde-corps inférieur 7.
Advantageously, the solidification of the tower can be completed, as shown, by the following devices, visible particularly on the figures 3 and 4 . These devices consist of:
  • a plate 26, for example U-shaped, fixed, for example by welding, on the vertical tube 8 of the lower railing element 7 and facing outwardly of the shoring tower; the lower edge (s) ( figure 3 ) or higher (s) ( figure 4 ) 27 of this plate comprises (s) a notch 28, one of the edges 29 is preferably bevelled;
  • a horizontal rod 30 secured to the vertical tube 2, 2 "of the lower ladder element 1 facing the tube 8 of the lower railing element 7.

Lors du montage de la tour d'étaiement, quand un tube vertical 2" de l'élément de cadre échelle supérieur est emmanché sur la tige connecteur 5 de la platine 15 du garde corps du même niveau, sa tige horizontale 30 vient s'insérer dans l'encoche 28 de la plaque en U 26 correspondante de l'élément de garde-corps inférieur. On réalise la même opération de l'autre côté de l'élément d'échelle. Cette insertion est, de préférence, facilitée par le biseautage 29. De cette façon, on réalise une connexion entre l'élément d'échelle et les éléments de garde-corps du même niveau, toujours sans aucune intervention humaine et sans utilisation de pièces qui ne seraient pas intégrées de construction aux éléments principaux de la tour.When mounting the shoring tower, when a vertical tube 2 "of the upper ladder frame member is fitted on the connector rod 5 of the plate 15 of the guard of the same level, its horizontal rod 30 is inserted in the notch 28 of the corresponding U-shaped plate 26 of the lower guard element, the same operation is carried out on the other side of the ladder element, which insertion is preferably facilitated by the beveling 29. In this way, a connection is made between the ladder element and the railing elements of the same level, always without any human intervention and without the use of parts which would not be integrated with the construction of the main elements of the ladder. tower.

La figure 3 montre, comme on l'a dit, les éléments de l'étage d'accès de la tour, donc l'étage reposant sur le sol. Dans son cas, l'encoche 28 est orientée vers le bas pour permettre la connexion de l'élément de garde-corps 7 sur l'élément d'échelle 1 dans cet ordre. Pour les autres étages de la tour, comme représenté sur la figure 4, l'encoche 28 est orientée vers le haut pour permettre dans cet ordre la connexion du tube 2" de l'élément d'échelle sur l'élément de garde-corps du même niveau déjà monté.The figure 3 shows, as we said, the elements of the access floor of the tower, so the floor resting on the ground. In this case, the notch 28 is oriented downwards to allow the connection of the railing element 7 to the ladder element 1 in this order. For the other floors of the tower, as shown on the figure 4 , the notch 28 is oriented upwards to allow in this order the connection of the tube 2 "of the ladder element on the railing element of the same level already mounted.

La tige 30 porte à son extrémité libre un basculeur 31 qui assure que des mouvements latéraux relatifs des éléments de garde-corps et d'échelle ne conduiront pas à un dégagement de la tige 30 hors de l'encoche 28. Le verrouillage de la connexion des éléments de la tour est ainsi réalisé aussi à ce niveau. Ce basculeur 31 est mobile autour d'un axe horizontal 32 pour ne pas représenter un obstacle lors du montage de la tour et limiter ses risques de déformation pendant un choc. Au cours d'une rotation qui serait imposée par un déplacement relatif des éléments de la tour, le basculeur 31 doit, bien entendu, venir en butée contre la tige 30 pour que cette rotation soit interrompue et que le verrouillage de la connexion continue à être assuré. Un dégagement de la tige 30 hors de l'encoche 28 n'est donc possible que lors d'un mouvement vertical de l'élément de cadre échelle, donc lors du démontage de la tour.The rod 30 carries at its free end a rocker 31 which ensures that relative lateral movements of guardrail and ladder elements will not lead to a release of the rod 30 out of the notch 28. The locking of the connection elements of the tower is thus also realized at this level. This rocker 31 is movable about a horizontal axis 32 to not represent an obstacle when mounting the tower and limit its risk of deformation during an impact. During a rotation that would be imposed by a relative displacement of the elements of the tower, the rocker 31 must, of course, abut against the rod 30 so that this rotation is interrupted and the locking of the connection continues to be assured. A clearance of the rod 30 out of the notch 28 is therefore possible only during a vertical movement of the ladder frame member, so during disassembly of the tower.

Ces dispositifs, en assurant de façon automatique une connexion verrouillée de chaque élément d'échelle aux deux éléments de garde-corps du même niveau, permet d'assurer une solidification sécurisée supplémentaire de la tour selon l'invention. Là encore, cette sécurisation s'effectue de façon simple et sans intervention humaine directe sur la connexion, ce qui assure qu'elle sera effectuée systématiquement et correctement.These devices, automatically ensuring a locked connection of each ladder element to the two guardrail elements of the same level, ensures additional secure solidification of the tower according to the invention. Here again, this security is done simply and without direct human intervention on the connection, which ensures that it will be performed systematically and correctly.

De plus, dans la variante de l'invention selon laquelle une plaque 26 du garde-corps 7 coopère avec une tige horizontale 30 de l'élément d'échelle 1, cette connexion a également pour fonction de reprendre les efforts latéraux exercés par les différents éléments les uns sur les autres. On obtient ainsi une meilleure répartition des efforts qui s'exercent sur les divers éléments de la tour, et cela améliore la stabilité et la sécurité de l'assemblage.In addition, in the variant of the invention in which a plate 26 of the guardrail 7 cooperates with a horizontal rod 30 of the ladder element 1, this connection also serves to take up the lateral forces exerted by the different elements on each other. This provides a better distribution of the forces exerted on the various elements of the tower, and this improves the stability and security of the assembly.

Bien entendu, les géométries précises des divers éléments qui sont représentés sur les figures ne sont que des exemples non limitatifs de mise en oeuvre de l'invention, et l'homme du métier saura adapter les principes fonctionnels sur lesquels se fonde l'invention à des géométries d'éléments de tour d'étaiement différentes.Of course, the precise geometries of the various elements which are represented in the figures are only non-limiting examples of implementation of the invention, and the person skilled in the art will be able to adapt the functional principles on which the invention is based to geometries of different shoring elements.

Claims (6)

  1. A shoring tower including a superposition of levels, each formed by two ladder elements (1, 6), each including vertical tubes (2, 2', 22) connected through horizontal bars (3, 3', 3") and two railing elements, each including vertical tubes (8, 12) connected through at least upper (9) and lower (13) horizontal stringers, and connection means between elements of a lower storey and of an upper storey of the shoring tower, characterized in that said connection means include in the areas where said connections occur:
    - a plate (15) secured to the lower face of the lower horizontal stringer (13) of the railing element (11) of the upper level and extending towards the outside of the shoring tower, said plate (15) being intended to rest on the upper end (16) of a vertical tube (2, 2') of the ladder element (1) of the lower level, and including at its free end two upper (5) and lower (5') vertical rods into which a vertical tube (22) of the ladder element (6) of the upper level and a vertical tube (2) of the ladder element (1) of the lower level may fit in respectively, so that the tube (22) of the ladder element (6) of the upper level will rest on the upper face of the plate (15) after having been fitted onto said upper rod (5);
    - a toggle (17) connected to the vertical tube (12) of the railing element (11) of the upper level, which may rotate around a horizontal axis (18) and including at its lower end a hook (21), and the geometry of which is designed so that, when the tube (22) of the upper ladder element (6) is fitted onto the upper rod (5) of the plate (15), the tube (22) of the upper ladder element (6) causes rotation of the toggle (17) and penetration of the hook (21) into an orifice (23) of the tube (2) of the lower ladder element (1).
  2. The shoring tower according to claim 1, characterized in that said toggle (17) is protected by a casing (19) bearing said horizontal axis (18) of the toggle (17).
  3. The shoring tower according to claim 2, characterized in that the upper edge of said casing (19) includes beveling (24) facilitating the guiding of the vertical tube (22) of the upper ladder element (6) upon its fitting onto the rod (2) of the lower ladder element (1).
  4. The shoring tower according to one of claims 1 to 3, characterizing that the lower face of said hook (21) includes beveling (25).
  5. The shoring tower according to one of claims 1 to 4, characterizing that said connection means also include, in the areas where said connections occur:
    - a U-shaped plate (26) attached on the vertical tube (8) of the lower railing element (7) and turned towards the outside of the shoring tower, and upper or lower (27) edge of this plate (26) including a notch (28);
    - a horizontal rod (30) secured to said vertical tube (2) of the lower ladder element (1) facing the tube (8) of the lower railing element (7);
    said rod (30) may be inserted into said notch (28) when the lower ladder element is fitted onto the ladder element (1) which is below it or when the upper railing element (11) is placed on the ladder element (1) which is below it, and in that said horizontal rod (30) includes at its free end, a toggle (31) ensuring locking of the rod (30) in the notch (28) during relative lateral displacements of the lower railing element and of the lower ladder element.
  6. The shoring tower according to claim 5, characterized in that said toggle (31) may rotate around a horizontal axis (32) secured to the horizontal rod (30) and it will abut against the horizontal rod (30) during this rotation.
EP20110305480 2010-04-23 2011-04-21 Shoring Tower Active EP2381051B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1053113A FR2959260B1 (en) 2010-04-23 2010-04-23 TURNING TOWER

Publications (2)

Publication Number Publication Date
EP2381051A1 EP2381051A1 (en) 2011-10-26
EP2381051B1 true EP2381051B1 (en) 2015-02-18

Family

ID=43414056

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20110305480 Active EP2381051B1 (en) 2010-04-23 2011-04-21 Shoring Tower

Country Status (2)

Country Link
EP (1) EP2381051B1 (en)
FR (1) FR2959260B1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2480837A1 (en) * 1980-04-16 1981-10-23 Entrepose Safety lock for connection of two tubular elements - has hinged hook on one tube locking onto dowel pin fitted to other tube
FR2883015B1 (en) * 2005-03-08 2008-11-07 Jalmat Ind Mediterranee Sa LOCKING DEVICE FOR SCAFFOLDING FRAMES AND STRETCHING TOWERS
FR2903135B1 (en) * 2006-06-30 2015-02-27 Bertrand Yves Marie Gerard Lamy TOWER BUILDING

Also Published As

Publication number Publication date
FR2959260B1 (en) 2012-05-18
FR2959260A1 (en) 2011-10-28
EP2381051A1 (en) 2011-10-26

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