EP2108764A1 - Safety device for opening - Google Patents

Safety device for opening Download PDF

Info

Publication number
EP2108764A1
EP2108764A1 EP09290248A EP09290248A EP2108764A1 EP 2108764 A1 EP2108764 A1 EP 2108764A1 EP 09290248 A EP09290248 A EP 09290248A EP 09290248 A EP09290248 A EP 09290248A EP 2108764 A1 EP2108764 A1 EP 2108764A1
Authority
EP
European Patent Office
Prior art keywords
hopper
longitudinal
safety device
evolution
zone
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP09290248A
Other languages
German (de)
French (fr)
Inventor
Olivier Perrin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP2108764A1 publication Critical patent/EP2108764A1/en
Withdrawn legal-status Critical Current

Links

Images

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
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/32—Safety or protective measures for persons during the construction of buildings
    • E04G21/3204—Safety or protective measures for persons during the construction of buildings against falling down

Definitions

  • the technical sector of the present invention is that of protection devices of a hopper to prevent falls of people or objects.
  • a hopper In a construction site under construction a hopper is an open space in a floor and constitutes a danger for the personnel. Despite the protection efforts undertaken, accidents remain too numerous. These protections are most often made in the form of a barrier flanking the hopper or covering boards. These have always proved insufficient to prevent the fall of people or objects.
  • the object of the present invention is to provide a device to avoid these disadvantages while allowing the passage of objects between different levels.
  • the invention therefore relates to a safety device for a hopper made between two levels of a construction, characterized in that it consists of a single plate resistant to compression, comprising an evolution zone and two longitudinal members peripheral longitudinal members parallel to each other, the ends of said longitudinal members being each connected by a transverse end spar, positioning means being provided on the edges of the hopper.
  • the device is in the form of a single piece.
  • the peripheral longitudinal spars are made by at least three folds of said plate whose walls delimit a U, the U-shaped ends being each connected by the transverse end spar.
  • the transverse end spar is welded to the U-shaped structure and to the evolution zone.
  • the positioning means are each constituted by a bar sliding in two jumpers, each jumper being secured to one of the two longitudinal longitudinal side members, the bar being supported on the edges of the hopper.
  • the zone of evolution comprises a first hatch intended for the passage of materials from one level to another of the construction, said hatch being articulated by hinges for opening on the side of the face. superior of the area of evolution.
  • the zone of evolution comprises a second door allowing the passage of personnel, said hatch being articulated around hinges to open on the side of the upper face of the evolution area.
  • the device comprises intermediate reinforcements bearing on the edge of the hatches.
  • the reinforcements consist of transverse longitudinal members arranged between the two longitudinal longitudinal side members and longitudinal longitudinal members arranged between two transverse longitudinal members.
  • the transverse and longitudinal longitudinal members have a U-shaped section.
  • fastening means are provided at the level of the positioning means.
  • a first advantage of the device according to the invention lies in the fact that the device can be quickly set up and is a staff development area by eliminating any possibility of falling.
  • Another advantage lies in the fact that the device allows the circulation between two levels of personnel and materials.
  • Another advantage is that the device has a low mass and can be manipulated by two people without requiring so lifting means and handling.
  • a hopper is an open space in a slab, usually rectangular in shape, to constitute the passage of a staircase or elevator during construction work.
  • the danger of a fall of person or object is always present as long as this hopper is not protected.
  • the device aims to be introduced into the hopper and thus eliminate any danger of falling.
  • the safety device 1 for a hopper made between two levels of a construction consists of a single plate 2 resistant to compression.
  • This plate is for example a plate of plastic material or equivalent. It comprises an evolution zone 2a and two longitudinal longitudinal members 3 parallel to each other. In order to stiffen this plate, the ends of said longitudinal members are each connected by means of an end transverse beam 5.
  • This device is maintained in the hopper by positioning means 10 bearing on the edges of this hopper.
  • This plate 2 also has two traps 6 and 13 at the evolution zone 2a.
  • FIG. 2 which represents a cross-section AA according to the figure 1 , we see the plate 2 provided with two longitudinal longitudinal members 3 which are in the form of a material reinforcement extending the edge of the plate 2.
  • This material reinforcement has any shape, for example generally cylindrical, provided with grooves longitudinal, not shown, to reinforce its resistance.
  • the sectional view of the figure 3 shows an additional reinforcement of the plate 2 by means of two transverse longitudinal members 5 of which only one is visible in this figure.
  • the shape of these transverse spars is of course arbitrary and these spars may have the same shape as that of the longitudinal members 3.
  • the figure 3 also shows that the device 1 rests on the edges of the hopper 16 by means of its positioning means 10 (only one of which is visible in the figure), also distributing any deviations on either side of the plate 2.
  • the plate 2 is in the form of a single piece with its longitudinal longitudinal members 3 and 5 and can be made for example by rotational molding.
  • This device 1 consists of a single plate 2 comprising an evolution zone 2a and two longitudinal longitudinal members 3 parallel to each other, only one of which is visible in this figure. These spars are made by at least three folds whose walls delimit a U 4 as will be explained in connection with the figure 7 .
  • the evolution zone 2a of the device comprises two hatches 6 and 13 intended to allow the passage of materials and personnel.
  • the hatch 6 is constituted by a plate cut in the evolution zone 2a and fixed by three hinges 7,8,9 to plate 2. These hinges are fixed so that the hatch 6 opens on the side of the upper face of the evolution zone 2a in the plane of the figure 4 .
  • This hatch allows the passage of materials between two levels of construction and the hatch must remain closed between these passages to avoid any risk of accidents.
  • the hatch 13 is fixed by two hinges 14, 15 and also opens on the side of the upper face of the evolution zone 2a.
  • This hatch is intended to allow the passage of staff for example through a ladder. For safety reasons, this hatch must remain closed when using the hatch mounts materials 6.
  • positioning means 10 of the device 1 are constituted by a sliding bar 11 in two jumpers 12.
  • Each jumper is attached to a longitudinal peripheral spar 3 so as to be located opposite each other.
  • the two jumpers are fixed in the vicinity of the ends of the device as is visible on the figure 4 .
  • Each pair of riders thus allows the passage of a support bar 11 which will maintain the device by resting on the upper edge of the hopper.
  • the device comprises two support bars 11 which can be fixed on the edges of the hopper to ensure its stability.
  • each spar 3 is constituted by a portion of the plate 2 which spar is delimited by at least three folds 17 forming a U 4 of the same side of the plate which will be detailed in relation to the figure 7 .
  • the U-shaped ends 4 of each longitudinal spar 3 are interconnected by a transverse end spar 5.
  • Each spar 5 is fixed to the plate 2 by welding at one of the walls 21 of the U-shaped ends 4 of the longitudinal spars. peripherals 3 and at the evolution zone 2a.
  • the figure 6 shows a perspective view showing a detail of the elements serving as intermediate reinforcements to the device.
  • the hatches 6 and 13 are bordered by transverse longitudinal beams 19 and longitudinal 18.
  • These intermediate reinforcements are constituted by U-section pieces. These rails are fixed via a branch of the U on the underside of the evolution zone 2a.
  • the transverse longitudinal members 19 are connected to the longitudinal longitudinal members 3, for example by welding.
  • the longitudinal longitudinal members 18 are connected to the transverse longitudinal members 19, for example also by welding.
  • the peripheral and intermediate reinforcements therefore increase the compressive strength of the device.
  • the device according to the invention may have a length of the order of 2800 mm, a width of about 1200 mm and a thickness of about 120 mm to obstruct a hopper of a length. from 2800 to 3200 mm and a width of 1200 to 1600 mm.
  • the device can be set up by two people and can support a load of about 600 kG distributed over its entire surface.
  • the free end of the bar 11 is provided with perforations 20 for receiving a stop means, for example pins, to fix the position of the device.
  • a stop means for example pins
  • the figure 7 represents a sectional view of an enlargement of the area of the folds constituting the longitudinal longitudinal spars 3.
  • a peripheral longitudinal spar is thus formed by a folding of the plate 2 to form three folds 17a, 17b, 17c as the shows this figure. We see that this folding delimit three walls 21 substantially perpendicular to each other.
  • the transverse end spar 5 is in turn placed in the space between the U-shaped structure 4 and the plate 2, and this spar is fixed for example by welding to one of the walls 21 of this U-shaped structure 4 and to the plate 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)

Abstract

The device (1) has a plastic single plate (2) resistant to compression, and including an evolution zone (2a) and two peripheral longitudinal rails (3) arranged parallel to each other. U-shaped ends (4) of the longitudinal rails are connected by an end of a transversal rail (5). A positioning unit (10) is provided on edges of a floor opening so as to maintain the device in the opening. Trap doors (6, 13) are hinged by hinges (7, 8, 9) so as to open a side of an upper surface of the evolution zone, where the device is in form of a monoblock piece.

Description

Le secteur technique de la présente invention est celui des dispositifs de protection d'une trémie afin d'éviter les chutes de personnes ou d'objets.The technical sector of the present invention is that of protection devices of a hopper to prevent falls of people or objects.

Dans un chantier en cours de travaux une trémie est un espace ouvert dans un plancher et constitue un danger pour les personnels. Malgré les efforts de protection entrepris les accidents demeurent trop nombreux. Ces protections sont réalisées le plus souvent sous la forme d'une barrière encadrant la trémie ou bien des planches de recouvrement. Celles-ci se sont avérées toujours insuffisantes pour éviter la chute de personnes ou d'objets.In a construction site under construction a hopper is an open space in a floor and constitutes a danger for the personnel. Despite the protection efforts undertaken, accidents remain too numerous. These protections are most often made in the form of a barrier flanking the hopper or covering boards. These have always proved insufficient to prevent the fall of people or objects.

Il n'y a donc pas à l'heure actuelle de solution assurant une sécurité pour les personnes et pour l'approvisionnement des matériaux.So there is currently no solution providing security for people and for the supply of materials.

Le but de la présente invention est de fournir un dispositif permettant d'éviter ces inconvénients tout en permettant le passage d'objet entre différents niveaux.The object of the present invention is to provide a device to avoid these disadvantages while allowing the passage of objects between different levels.

L'invention a donc pour objet un dispositif de sécurité pour une trémie pratiquée entre deux niveaux d'une construction, caractérisé en ce qu'il est constitué d'une plaque unique résistant à la compression, comportant une zone d'évolution et deux longerons longitudinaux périphériques parallèles entre eux, les extrémités desdits longerons étant reliées chacune par un longeron transversal d'extrémité, des moyens de positionnement étant prévus sur les bords de la trémie.The invention therefore relates to a safety device for a hopper made between two levels of a construction, characterized in that it consists of a single plate resistant to compression, comprising an evolution zone and two longitudinal members peripheral longitudinal members parallel to each other, the ends of said longitudinal members being each connected by a transverse end spar, positioning means being provided on the edges of the hopper.

Selon une caractéristique de l'invention, le dispositif se présente sous la forme d'une pièce monobloc.According to one characteristic of the invention, the device is in the form of a single piece.

Selon une autre caractéristique de l'invention, les longerons longitudinaux périphériques sont réalisés par au moins trois pliures de ladite plaque dont les parois délimitent un U, les extrémités en U étant reliées chacune par le longeron transversal d'extrémité.According to another characteristic of the invention, the peripheral longitudinal spars are made by at least three folds of said plate whose walls delimit a U, the U-shaped ends being each connected by the transverse end spar.

Selon une caractéristique de l'invention, le longeron transversal d'extrémité est soudé à la structure en U et à la zone d'évolution.According to one characteristic of the invention, the transverse end spar is welded to the U-shaped structure and to the evolution zone.

Selon une autre caractéristique de l'invention, les moyens de positionnement sont constitués chacun par une barre coulissant dans deux cavaliers, chaque cavalier étant solidaire d'un des deux longerons périphériques longitudinaux, la barre prenant appui sur les bords de la trémie.According to another characteristic of the invention, the positioning means are each constituted by a bar sliding in two jumpers, each jumper being secured to one of the two longitudinal longitudinal side members, the bar being supported on the edges of the hopper.

Selon une autre caractéristique de l'invention, la zone d'évolution comporte une première trappe destinée au passage des matériaux d'un niveau à un autre de la construction, ladite trappe étant articulée par des charnières pour s'ouvrir du côté de la face supérieure de la zone d'évolution.According to another characteristic of the invention, the zone of evolution comprises a first hatch intended for the passage of materials from one level to another of the construction, said hatch being articulated by hinges for opening on the side of the face. superior of the area of evolution.

Selon une autre caractéristique de l'invention, la zone d'évolution comprend une seconde trappe permettant le passage du personnel, ladite trappe étant articulée autour de charnières pour s'ouvrir du côté de la face supérieure de la zone d'évolution.According to another characteristic of the invention, the zone of evolution comprises a second door allowing the passage of personnel, said hatch being articulated around hinges to open on the side of the upper face of the evolution area.

Selon une autre caractéristique de l'invention, le dispositif comporte des renforts intermédiaires en appui sur le bord des trappes.According to another characteristic of the invention, the device comprises intermediate reinforcements bearing on the edge of the hatches.

Selon une autre caractéristique de l'invention, les renforts sont constitués par des longerons transversaux disposés entre les deux longerons périphériques longitudinaux et des longerons longitudinaux disposés entre deux longerons transversaux.According to another characteristic of the invention, the reinforcements consist of transverse longitudinal members arranged between the two longitudinal longitudinal side members and longitudinal longitudinal members arranged between two transverse longitudinal members.

Selon une autre caractéristique de l'invention, les longerons transversaux et longitudinaux présentent en section une forme d'U.According to another characteristic of the invention, the transverse and longitudinal longitudinal members have a U-shaped section.

Selon une autre caractéristique de l'invention, des moyens de fixation sont prévus au niveau des moyens de positionnement.According to another characteristic of the invention, fastening means are provided at the level of the positioning means.

Un tout premier avantage du dispositif selon l'invention réside dans le fait que le dispositif peut être rapidement mis en place et constitue une zone d'évolution du personnel en supprimant toute possibilité de chute.A first advantage of the device according to the invention lies in the fact that the device can be quickly set up and is a staff development area by eliminating any possibility of falling.

Un autre avantage réside dans le fait que le dispositif permet la circulation entre deux niveaux du personnel et des matériaux.Another advantage lies in the fact that the device allows the circulation between two levels of personnel and materials.

Un autre avantage réside dans le fait que le dispositif présente une masse peu élevée et qu'il peut être manipulé par deux personnes sans nécessiter donc des moyens de levage et de manutention.Another advantage is that the device has a low mass and can be manipulated by two people without requiring so lifting means and handling.

D'autres caractéristiques, détails et avantages de l'invention ressortiront plus clairement de la description donnée ci-après à titre indicatif en relation avec des dessins dans lesquels :

  • la figure 1 est une vue en perspective d'un premier mode de réalisation du dispositif selon l'invention,
  • les figures 2 et 3 représentent une vue en coupe du dispositif selon la figure 1,
  • la figure 4 est une vue en perspective d'un autre mode de réalisation du dispositif selon l'invention,
  • la figure 5 représente une coupe transversale du dispositif selon la figure 4,
  • la figure 6 est une vue en perspective détaillée du dispositif selon la figure 4, et
  • la figure 7 représente une vue en coupe du détail des pliures formant le longeron longitudinal périphérique selon la figure 4.
Other features, details and advantages of the invention will emerge more clearly from the description given below as an indication in relation to drawings in which:
  • the figure 1 is a perspective view of a first embodiment of the device according to the invention,
  • the Figures 2 and 3 represent a sectional view of the device according to the figure 1 ,
  • the figure 4 is a perspective view of another embodiment of the device according to the invention,
  • the figure 5 represents a cross-section of the device according to the figure 4 ,
  • the figure 6 is a detailed perspective view of the device according to the figure 4 , and
  • the figure 7 represents a sectional view of the detail of the folds forming the peripheral longitudinal spar according to the figure 4 .

Une trémie est un espace ouvert dans une dalle, généralement de forme rectangulaire, afin de constituer le passage d'un escalier ou d'un ascenseur en cours de travaux dans une construction. Le danger d'une chute de personne ou d'objet est toujours présent tant que cette trémie n'est pas protégée. Le dispositif vise à être introduit dans la trémie et donc éliminer tout danger de chute.A hopper is an open space in a slab, usually rectangular in shape, to constitute the passage of a staircase or elevator during construction work. The danger of a fall of person or object is always present as long as this hopper is not protected. The device aims to be introduced into the hopper and thus eliminate any danger of falling.

Selon un premier mode de réalisation représenté schématiquement sur la figure 1, le dispositif de sécurité 1 pour une trémie pratiquée entre deux niveaux d'une construction est constitué d'une plaque unique 2 résistant à la compression. Cette plaque est par exemple une plaque en matériau plastique ou équivalent. Elle comporte une zone d'évolution 2a et deux longerons longitudinaux périphériques 3 parallèles entre eux. Afin de rigidifier cette plaque, les extrémités desdits longerons sont reliées chacune à l'aide d'un longeron transversal 5 d'extrémité. Ce dispositif est maintenu dans la trémie par des moyens de positionnement 10 venant en appui sur les bords de cette trémie. Cette plaque 2 comporte également deux trappes 6 et 13 au niveau de la zone d'évolution 2a.According to a first embodiment shown schematically on the figure 1 , the safety device 1 for a hopper made between two levels of a construction consists of a single plate 2 resistant to compression. This plate is for example a plate of plastic material or equivalent. It comprises an evolution zone 2a and two longitudinal longitudinal members 3 parallel to each other. In order to stiffen this plate, the ends of said longitudinal members are each connected by means of an end transverse beam 5. This device is maintained in the hopper by positioning means 10 bearing on the edges of this hopper. This plate 2 also has two traps 6 and 13 at the evolution zone 2a.

Sur la figure 2, qui représente une coupe transversale AA selon la figure 1, on voit la plaque 2 munie des deux longerons longitudinaux 3 qui se présentent sous la forme d'un renfort de matière prolongeant l'arête de la plaque 2. Ce renfort de matière présente une forme quelconque, par exemple globalement cylindrique, munie de rainures longitudinales, non représentées, afin de renforcer sa résistance.On the figure 2 , which represents a cross-section AA according to the figure 1 , we see the plate 2 provided with two longitudinal longitudinal members 3 which are in the form of a material reinforcement extending the edge of the plate 2. This material reinforcement has any shape, for example generally cylindrical, provided with grooves longitudinal, not shown, to reinforce its resistance.

La vue en coupe de la figure 3 montre un renforcement supplémentaire de la plaque 2 par l'intermédiaire de deux longerons transversaux 5 dont un seul est visible sur cette figure. La forme de ces longerons transversaux est bien entendu quelconque et ces longerons peuvent présenter la même forme que celle des longerons 3. La figure 3 montre également que le dispositif 1 repose sur les bords de la trémie 16 grâce à ses moyens de positionnement 10 (dont un seul est visible sur la figure) en répartissant également les éventuels écarts de part et d'autre de la plaque 2.The sectional view of the figure 3 shows an additional reinforcement of the plate 2 by means of two transverse longitudinal members 5 of which only one is visible in this figure. The shape of these transverse spars is of course arbitrary and these spars may have the same shape as that of the longitudinal members 3. The figure 3 also shows that the device 1 rests on the edges of the hopper 16 by means of its positioning means 10 (only one of which is visible in the figure), also distributing any deviations on either side of the plate 2.

Bien entendu, la plaque 2 se présente sous la forme d'une pièce monobloc avec ses longerons longitudinaux 3 et transversaux 5 et peut être réalisée par exemple par rotomoulage.Of course, the plate 2 is in the form of a single piece with its longitudinal longitudinal members 3 and 5 and can be made for example by rotational molding.

Sur la figure 4, on a représenté un deuxième mode réalisation du dispositif 1 selon l'invention. Ce dispositif 1 est constitué d'une plaque unique 2 comportant une zone d'évolution 2a et deux longerons longitudinaux périphériques 3 parallèles entre eux, dont un seul est visible sur cette figure. Ces longerons sont réalisés par au moins trois pliures dont les parois délimitent un U 4 comme cela sera expliqué en relation avec la figure 7.On the figure 4 a second embodiment of the device 1 according to the invention is shown. This device 1 consists of a single plate 2 comprising an evolution zone 2a and two longitudinal longitudinal members 3 parallel to each other, only one of which is visible in this figure. These spars are made by at least three folds whose walls delimit a U 4 as will be explained in connection with the figure 7 .

Sur la figure 4, on peut voir encore que la zone d'évolution 2a du dispositif comporte deux trappes 6 et 13 destinées à permettre le passage des matériaux et du personnel.On the figure 4 it can also be seen that the evolution zone 2a of the device comprises two hatches 6 and 13 intended to allow the passage of materials and personnel.

La trappe 6 est constituée par une plaque découpée dans la zone d'évolution 2a et fixée par trois charnières 7,8,9 à la plaque 2. Ces charnières sont fixées de façon à ce que la trappe 6 s'ouvre du côté de la face supérieure de la zone d'évolution 2a dans le plan de la figure 4. Cette trappe permet les passages de matériaux entre deux niveaux de la construction et la trappe doit rester fermée entre ces passages pour éviter tout risque d'accidents.The hatch 6 is constituted by a plate cut in the evolution zone 2a and fixed by three hinges 7,8,9 to plate 2. These hinges are fixed so that the hatch 6 opens on the side of the upper face of the evolution zone 2a in the plane of the figure 4 . This hatch allows the passage of materials between two levels of construction and the hatch must remain closed between these passages to avoid any risk of accidents.

La trappe 13 est quant à elle fixée par deux charnières 14, 15 et s'ouvre également du côté de la face supérieure de la zone d'évolution 2a. Cette trappe est prévue pour permettre le passage du personnel par exemple grâce à une échelle. Pour des raisons de sécurité, cette trappe doit rester fermée lors de l'utilisation de la trappe monte matériaux 6.The hatch 13 is fixed by two hinges 14, 15 and also opens on the side of the upper face of the evolution zone 2a. This hatch is intended to allow the passage of staff for example through a ladder. For safety reasons, this hatch must remain closed when using the hatch mounts materials 6.

Sur cette figure 4, on peut également voir que des moyens de positionnement 10 du dispositif 1 sont constitués par une barre 11 coulissant dans deux cavaliers 12. Chaque cavalier est fixé à un longeron périphérique longitudinal 3 de façon à être situé face à face. Les deux cavaliers sont fixés au voisinage des extrémités du dispositif comme cela est visible sur la figure 4. Chaque paire de cavalier permet donc le passage d'une barre de soutien 11 qui va maintenir le dispositif en prenant appui sur le bord supérieur de la trémie. Le dispositif comporte deux barres de soutien 11 qui peuvent être fixées sur les bords de la trémie afin de garantir sa stabilité.On this figure 4 it can also be seen that positioning means 10 of the device 1 are constituted by a sliding bar 11 in two jumpers 12. Each jumper is attached to a longitudinal peripheral spar 3 so as to be located opposite each other. The two jumpers are fixed in the vicinity of the ends of the device as is visible on the figure 4 . Each pair of riders thus allows the passage of a support bar 11 which will maintain the device by resting on the upper edge of the hopper. The device comprises two support bars 11 which can be fixed on the edges of the hopper to ensure its stability.

Afin de renforcer la structure, comme le montre la figure 5, chaque longeron 3 est constitué par une partie de la plaque 2 lequel longeron est délimité par au moins trois pliures 17 formant un U 4 du même côté de la plaque qui seront détaillées en relation avec la figure 7. Les extrémités en U 4 de chaque longeron longitudinal 3 sont reliées entre elles par un longeron transversal d'extrémité 5. Chaque longeron 5 est fixé à la plaque 2 par soudure au niveau d'une des parois 21 des extrémités en U 4 des longerons longitudinaux périphériques 3 et au niveau de la zone d'évolution 2a.In order to strengthen the structure, as shown in figure 5 each spar 3 is constituted by a portion of the plate 2 which spar is delimited by at least three folds 17 forming a U 4 of the same side of the plate which will be detailed in relation to the figure 7 . The U-shaped ends 4 of each longitudinal spar 3 are interconnected by a transverse end spar 5. Each spar 5 is fixed to the plate 2 by welding at one of the walls 21 of the U-shaped ends 4 of the longitudinal spars. peripherals 3 and at the evolution zone 2a.

Sur la figure 5, on peut voir encore que le dispositif repose sur les bords de la trémie 16 grâce aux barres de soutien 11 (une seule est visible sur la figure) de façon à ce que les éventuels écarts avec les bords de la trémie soient répartis de part et d'autre du dispositif. On voit qu'un écart subsiste entre le dispositif 1 et la trémie 16. Mais cet écart est minimisé de façon à être conforme aux règles de sécurité.On the figure 5 , we can see again that the device rests on the edges of the hopper 16 thanks to the bars of support 11 (only one is visible in the figure) so that any gaps with the edges of the hopper are distributed on both sides of the device. We see that a gap remains between the device 1 and the hopper 16. But this gap is minimized so as to comply with safety rules.

La figure 6 montre une vue en perspective représentant un détail des éléments servant de renforts intermédiaires au dispositif. Ainsi, on peut voir que les trappes 6 et 13 sont bordées par des longerons transversaux 19 et longitudinaux 18. Ces renforts intermédiaires sont constitués par des pièces de section en U. Ces longerons sont fixés par l'intermédiaire d'une branche de l'U à la face inférieure de la zone d'évolution 2a. Les longerons transversaux 19 sont reliés aux longerons longitudinaux périphériques 3, par exemple par soudure. Les longerons longitudinaux 18 sont reliés aux longerons transversaux 19, par exemple également par soudure. Les renforts périphériques et intermédiaires augmentent donc la résistance à la compression du dispositif.The figure 6 shows a perspective view showing a detail of the elements serving as intermediate reinforcements to the device. Thus, it can be seen that the hatches 6 and 13 are bordered by transverse longitudinal beams 19 and longitudinal 18. These intermediate reinforcements are constituted by U-section pieces. These rails are fixed via a branch of the U on the underside of the evolution zone 2a. The transverse longitudinal members 19 are connected to the longitudinal longitudinal members 3, for example by welding. The longitudinal longitudinal members 18 are connected to the transverse longitudinal members 19, for example also by welding. The peripheral and intermediate reinforcements therefore increase the compressive strength of the device.

A titre d'exemple, le dispositif selon l'invention peut présenter une longueur de l'ordre de 2800 mm, une largeur de l'ordre de 1200 mm et une épaisseur de l'ordre 120 mm pour obstruer une trémie d'une longueur de 2800 à 3200 mm et d'une largeur de 1200 à 1600 mm. Réalisé par exemple avec des tôles gaufrées d'aluminium, le dispositif peut être mis en place par deux personnes et il peut supporter une charge d'environ 600 kG répartie sur l'ensemble de sa surface.By way of example, the device according to the invention may have a length of the order of 2800 mm, a width of about 1200 mm and a thickness of about 120 mm to obstruct a hopper of a length. from 2800 to 3200 mm and a width of 1200 to 1600 mm. Made for example with embossed aluminum sheets, the device can be set up by two people and can support a load of about 600 kG distributed over its entire surface.

Sur la figure 6, on voit encore que l'extrémité libre de la barre 11 est munie de perforations 20 destinées à recevoir un moyen d'arrêt, par exemple des goupilles, pour fixer la position du dispositif. Ces perforations peuvent être également utilisées pour fixer le dispositif aux bords de la trémie 16.On the figure 6 it is also seen that the free end of the bar 11 is provided with perforations 20 for receiving a stop means, for example pins, to fix the position of the device. These perforations can also be used to fix the device to the edges of the hopper 16.

La figure 7 représente une vue en coupe d'un agrandissement de la zone des pliures constituant les longerons longitudinaux périphériques 3. Un longeron longitudinal périphérique est donc formé par un pliage de la plaque 2 pour constituer trois pliures 17a, 17b, 17c comme le montre cette figure. On voit que ce pliage délimitent trois parois 21 sensiblement perpendiculaires entre elles. Le longeron transversal d'extrémité 5 est quant à lui placé dans l'espace présent entre la structure en U 4 et la plaque 2, et ce longeron est fixé par exemple par soudure à l'une des parois 21 de cette structure en U 4 et à la plaque 2.The figure 7 represents a sectional view of an enlargement of the area of the folds constituting the longitudinal longitudinal spars 3. A peripheral longitudinal spar is thus formed by a folding of the plate 2 to form three folds 17a, 17b, 17c as the shows this figure. We see that this folding delimit three walls 21 substantially perpendicular to each other. The transverse end spar 5 is in turn placed in the space between the U-shaped structure 4 and the plate 2, and this spar is fixed for example by welding to one of the walls 21 of this U-shaped structure 4 and to the plate 2.

Claims (11)

Dispositif de sécurité (1) pour une trémie (16) pratiquée entre deux niveaux d'une construction, caractérisé en ce qu'il est constitué d'une plaque unique (2) résistant à la compression, comportant une zone d'évolution (2a) et deux longerons longitudinaux périphériques (3) parallèles entre eux, les extrémités desdits longerons étant reliées chacune par un longeron transversal (5) d'extrémité, des moyens de positionnement (10) étant prévus sur les bords de la trémie (16).Safety device (1) for a hopper (16) formed between two levels of a construction, characterized in that it consists of a single plate (2) resistant to compression, comprising a zone of evolution (2a ) and two longitudinal peripheral longitudinal members (3) parallel to each other, the ends of said longitudinal members being each connected by a transverse beam (5) end, positioning means (10) being provided on the edges of the hopper (16). Dispositif de sécurité (1) pour une trémie (16) selon la revendication 1, caractérisé en ce qu'il se présente sous la forme d'une pièce monobloc.Safety device (1) for a hopper (16) according to claim 1, characterized in that it is in the form of a single piece. Dispositif de sécurité (1) pour une trémie (16) selon la revendication 1, caractérisé en ce que les longerons longitudinaux périphériques (3) sont réalisés par au moins trois pliures (17a, 17b, 17c) de ladite plaque dont les parois délimitent un U (4), les extrémités en U étant reliées chacune par le longeron transversal (5) d'extrémité.Safety device (1) for a hopper (16) according to claim 1, characterized in that the longitudinal longitudinal members (3) are formed by at least three folds (17a, 17b, 17c) of said plate whose walls define a U (4), the U-shaped ends being each connected by the transverse spar (5) end. Dispositif de sécurité (1) pour une trémie (16) selon la revendication 3, caractérisé en ce que le longeron transversal (5) d'extrémité est soudé à la structure en U (4) et à la zone d'évolution (2a).Safety device (1) for a hopper (16) according to claim 3, characterized in that the transverse spar (5) end is welded to the U-shaped structure (4) and the evolution zone (2a) . Dispositif de sécurité (1) pour une trémie (16) selon l'une quelconque des revendications 1 à 4, caractérisé en ce que les moyens de positionnement (10) sont constitués chacun par une barre (11) coulissant dans deux cavaliers (12), chaque cavalier étant solidaire d'un des deux longerons périphériques longitudinaux (3), la barre prenant appui sur les bords de la trémie (16).Safety device (1) for a hopper (16) according to any one of claims 1 to 4, characterized in that the positioning means (10) are each constituted by a bar (11) sliding in two jumpers (12) , each jumper being secured to one of the two longitudinal longitudinal side members (3), the bar being supported on the edges of the hopper (16). Dispositif de sécurité (1) pour une trémie (16) selon l'une quelconque des revendications précédentes, caractérisé en ce que la zone d'évolution (2a) comporte une première trappe (6) destinée au passage des matériaux d'un niveau à un autre de la construction, ladite trappe étant articulée par des charnières (7, 8, 9) pour s'ouvrir du côté de la face supérieure de la zone d'évolution (2a).Safety device (1) for a hopper (16) according to any one of the preceding claims, characterized in that the zone of evolution (2a) comprises a first hatch (6) intended for the passage of materials from one level to another. another of the construction, said hatch being articulated by hinges (7, 8, 9) to open on the side of the upper face of the evolution zone (2a). Dispositif de sécurité (1) pour une trémie (16) selon l'une quelconque des revendications précédentes, caractérisé en ce que la zone d'évolution (2a) comprend une seconde trappe (13) permettant le passage du personnel, ladite trappe étant articulée autour de charnières (14, 15) pour s'ouvrir du côté de la face supérieure de la zone d'évolution (2a).Safety device (1) for a hopper (16) according to any of the preceding claims, characterized in that the zone of evolution (2a) comprises a second hatch (13) allowing the passage of personnel, said hatch being articulated around hinges (14, 15) to open the door. side of the upper face of the evolution zone (2a). Dispositif de sécurité (1) pour une trémie (16) selon la revendication 6 ou 7, caractérisé en ce qu'il comporte des renforts intermédiaires en appui sur le bord des trappes (6, 13).Safety device (1) for a hopper (16) according to claim 6 or 7, characterized in that it comprises intermediate reinforcements resting on the edge of the hatches (6, 13). Dispositif de sécurité (1) pour une trémie (16) selon la revendication 8, caractérisé en ce que les renforts sont constitués par des longerons transversaux (19) disposés entre les deux longerons périphériques longitudinaux (3) et des longerons longitudinaux (18) disposés entre deux longerons transversaux (19).Safety device (1) for a hopper (16) according to claim 8, characterized in that the reinforcements consist of transverse longitudinal members (19) arranged between the two longitudinal longitudinal longitudinal members (3) and longitudinal longitudinal members (18) arranged between two transverse beams (19). Dispositif de sécurité (1) pour une trémie (16) selon la revendication 9, caractérisé en ce que les longerons transversaux (19) et longitudinaux (18) présentent en section une forme d'U.Safety device (1) for a hopper (16) according to claim 9, characterized in that the transverse longitudinal members (19) and longitudinal (18) have a U-shaped section. Dispositif de sécurité (1) pour une trémie (16) selon l'une quelconque des revendications précédentes, caractérisé en ce que des moyens de fixation sont prévus au niveau des moyens de positionnement (10).Safety device (1) for a hopper (16) according to any one of the preceding claims, characterized in that fixing means are provided at the level of the positioning means (10).
EP09290248A 2008-04-09 2009-04-02 Safety device for opening Withdrawn EP2108764A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0801946A FR2929973B1 (en) 2008-04-09 2008-04-09 SAFETY DEVICE FOR HOPPER

Publications (1)

Publication Number Publication Date
EP2108764A1 true EP2108764A1 (en) 2009-10-14

Family

ID=39929626

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09290248A Withdrawn EP2108764A1 (en) 2008-04-09 2009-04-02 Safety device for opening

Country Status (2)

Country Link
EP (1) EP2108764A1 (en)
FR (1) FR2929973B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103893929A (en) * 2014-03-29 2014-07-02 国家电网公司 Combined high-strength falling prevention track with tail end locks
CN108612329A (en) * 2018-06-07 2018-10-02 重庆工业职业技术学院 A kind of safeguard structure and its construction method of skyscraper internal core tube construction

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8222012U1 (en) * 1982-08-04 1982-12-23 Plettac Gmbh Stahlbau Und Gesenkschmiede, 5970 Plettenberg HORIZONTAL FRAME FOR PRE-MADE WORK FRAME
EP1669515A1 (en) * 2004-12-02 2006-06-14 Wilhelm Layher Vermögensverwaltungs-GmbH Steel-sheet bridging plank
EP1903164A1 (en) * 2006-09-07 2008-03-26 Olivier Perrin Cover slab

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8222012U1 (en) * 1982-08-04 1982-12-23 Plettac Gmbh Stahlbau Und Gesenkschmiede, 5970 Plettenberg HORIZONTAL FRAME FOR PRE-MADE WORK FRAME
EP1669515A1 (en) * 2004-12-02 2006-06-14 Wilhelm Layher Vermögensverwaltungs-GmbH Steel-sheet bridging plank
EP1903164A1 (en) * 2006-09-07 2008-03-26 Olivier Perrin Cover slab

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103893929A (en) * 2014-03-29 2014-07-02 国家电网公司 Combined high-strength falling prevention track with tail end locks
CN103893929B (en) * 2014-03-29 2016-05-11 国家电网公司 The box-like fall arrest track of high-strength complex of end of tape lock
CN108612329A (en) * 2018-06-07 2018-10-02 重庆工业职业技术学院 A kind of safeguard structure and its construction method of skyscraper internal core tube construction

Also Published As

Publication number Publication date
FR2929973B1 (en) 2010-06-04
FR2929973A1 (en) 2009-10-16

Similar Documents

Publication Publication Date Title
LU87295A1 (en) POLYCARBONATE DOOR APRON WITH HORIZONTAL SECTIONS
EP1756367A1 (en) Lightweight metal joint for concrete surfaces
EP3073028A1 (en) Beam with hinged connection ends
FR3022934A1 (en) CONSTRUCTION EQUIPPED WITH ANTI-FALL PROTECTION EQUIPMENT AND CORRESPONDING INACTIVATION METHOD
FR2548637A1 (en) GUTTER SECTION FOR A SQUEEGEE CONVEYOR, TO BE USED IN PARTICULAR IN MINING OPERATIONS
FR2939820A1 (en) LATERAL EXTENSION EQUIPMENT FOR PLATFORM BANKS DOOR
EP2108764A1 (en) Safety device for opening
FR2958873A1 (en) Transportable prefabrication mold for fabricating e.g. reinforced concrete posts at building site, has blocking unit for blocking two longitudinal side walls of casing in specific position
FR2905712A1 (en) Person and material safety device for use in building site, has platform incorporating fixation units on edges of shaft, where edge cooperates with retractable units so as to compensate dimension difference between platform and shaft
WO2018134482A1 (en) Carriage for different elements of a crane to be loaded in a container
FR3003286A1 (en) MODIFIABLE SHAPE TRAY TRAY
FR2698650A1 (en) Footbridge for obstacle clearance.
EP2048287A1 (en) Spacer for a crash barrier
CH441702A (en) Formwork
FR2876718A1 (en) Wooden formwork for reinforced concrete floor, has lateral sections with rib to position bracing clamp at distance when subjected to transversal force and position frame in formwork, where clamp has frail parts inserting frame in formwork
FR2948397A1 (en) SHELTER OF SWIMMING POOL
FR3047503A1 (en) DEVICE FOR FIXING A GUARD RAIL TO A PREFABRICATED WALL AND ASSOCIATED GARDEN-BODY
FR2967105A1 (en) Removable carrier for lorry, has frame formed of longitudinal beams and ties, and table support provided at back of longitudinal beams, where cross-piece is fixed to table support by bolts
FR3049627A1 (en) FORMWORK KIT FOR FORMING A DEMONTABLE FORMWORK FOR FLOWING A SLAB OF MATERIAL, SUCH AS CONCRETE, AND DEMONTABLE FORMWORK PRODUCED FROM SUCH A KIT
IT201800003506U1 (en) CONTAINMENT CUP FOR CUP ELEVATORS.
FR2778831A1 (en) Folding seat
FR2576882A1 (en) HANDLING CONTAINER
FR3021333A1 (en) PARTITION PANEL FOR MOBILE PARTITION AND MOBILE PARTITION USING SUCH A PANEL
FR3024442A1 (en) DEVICE FOR SECURING A WASTE TANK INTENDED TO BE CHARGED WITH WASTE FROM A PLATFORM
FR2789850A1 (en) Frame for animal barrier has gate with catch formed by U-shaped bracket straddling the gate

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

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

17P Request for examination filed

Effective date: 20100414

17Q First examination report despatched

Effective date: 20100614

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

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Effective date: 20130425