EP0331583A1 - Devices for making recesses in concrete - Google Patents

Devices for making recesses in concrete Download PDF

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Publication number
EP0331583A1
EP0331583A1 EP89400589A EP89400589A EP0331583A1 EP 0331583 A1 EP0331583 A1 EP 0331583A1 EP 89400589 A EP89400589 A EP 89400589A EP 89400589 A EP89400589 A EP 89400589A EP 0331583 A1 EP0331583 A1 EP 0331583A1
Authority
EP
European Patent Office
Prior art keywords
plate
concrete
spindle
recess
making
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Withdrawn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
EP89400589A
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German (de)
French (fr)
Inventor
Jean-Marie Edouard Vuillermoz
Georges André Ferran
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
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Filing date
Publication date
Priority claimed from FR8802752A external-priority patent/FR2628025B1/en
Application filed by Individual filed Critical Individual
Publication of EP0331583A1 publication Critical patent/EP0331583A1/en
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G15/00—Forms or shutterings for making openings, cavities, slits, or channels
    • E04G15/06—Forms or shutterings for making openings, cavities, slits, or channels for cavities or channels in walls of floors, e.g. for making chimneys
    • E04G15/063—Re-usable forms
    • E04G15/068—Re-usable forms for channels open towards the surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B28B23/0056—Means for inserting the elements into the mould or supporting them in the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/16—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/16—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes
    • B28B7/18—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes the holes passing completely through the article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/34—Moulds, cores, or mandrels of special material, e.g. destructible materials
    • B28B7/348—Moulds, cores, or mandrels of special material, e.g. destructible materials of plastic material or rubber

Definitions

  • the present invention relates to improvements to the devices enabling reserves to be made in concrete.
  • a full reserve is formed by a foreign body such as a block of polystyrene embedded in the concrete.
  • a hollow reserve is generally formed by a cylindrical cavity allowing, for example, the passage of an assembly rod.
  • frames are used, assembled to form a capacity border, resting on a flat surface, delimiting a volume in which the concrete is poured.
  • prismatic blocks are used, made of expanded polystyrene for example, having at the base of each of their lateral faces a tab making it possible to position the block either relative to a neighboring block, or relative to the edge of capacity.
  • the blocks which are simply joined by the ends of the aforementioned legs, can move and, secondly, because it is not possible to vary the distance between blocks or between blocks and borders.
  • the device of the invention overcomes these drawbacks and it is remarkable in that we use bracing elements which can partially fit into the ends of the legs of the blocks and join them together.
  • Each bracing element has, in section, the same shape as the leg and has at one end a shouldered portion of smaller section, capable of being engaged in a recess, of the same section, provided at the end of the legs of the block.
  • This element has at its other end, a recess identical to those provided on the legs, said recess can therefore receive the stepped part of another bracing element or the end of an assembly part whose section is identical to that of said shoulder part.
  • this device is particularly advantageous when it is a question of maintaining perpendicular to the plane of the slab to be poured a cylindrical spindle intended to produce a hollow reserve. This device is also advantageous when it comes to positioning threaded bushings.
  • a plate is used which is kept pinched as in the main application and having, at its upper part, a tongue on which the reservation pin is engaged.
  • 1 is a flat, horizontal surface, constituting the bottom of a mold delimited by rules 2, forming capacity borders, in which it is desired to pour concrete.
  • bottom 1 blocks 3 made, for example, of expanded polystyrene and having towards their base and on each of their lateral faces, tabs 4.
  • the wedging of the blocks with one another, or with respect to the rules can be carried out with the aid of bracing elements 5 each having, at one of their ends, a shouldered part 6, of smaller section, capable of being engaged in a recess 7, provided at the end of each of the legs 4.
  • Each element 5 has, at its other end, a recess 8 identical to those 7, allowing by means of an assembly part 9 which can be engaged by one of its ends in a recess 8 and by the another in one of the recesses 7 of a block 3, to connect said block or said element (for example: block 3a to element 5a in FIG. 1).
  • the recesses 7 and 8 open onto the bottom 1 which allows, in particular, the positioning of the blocks 3 by a movement perpendicular to said bottom.
  • the shouldered parts 6 affect, in a section made by a vertical plane perpendicular to the axis of the element, a semi-circular profile.
  • the recesses 7 and 8 have an identical profile as well as the parts 9.
  • the plate 11 has, on its lower edge 12, a semi-circular recess 13 whose section is identical to that of the part 6 of the elements 5 or that of the parts 9.
  • the plate 11 is held perpendicular to the bottom 1, pinched between the end of a tab 4 and that of an element 5, said plate overlapping, as the case may be, a part 6 or a Exhibit 9.
  • the pin 10 has, at its lower end, a slot 14 (FIG. 4) whose width is equal to the thickness of the plate 11.
  • the positioning of the pin 10, relative to the plate 11, is ensured by a notch 15, provided on the upper edge 16 of said plate.
  • the profile of the notch 15 is delimited by a rectilinear part, which is connected obliquely to the upper edge of the plate by its end situated towards the recess 13 and by a curvilinear part connecting the other end of said rectilinear part, and said upper edge of the plate.
  • the bottom of the slot 14 of the pin 10 is shaped so as to match the profile of the notch 15.
  • a ring 17, made of an elastically deformable material, which engages on the lower end 18 of the spindle 10, the positioning of said ring, relative to the plate 11, being provided by two notches 19 provided on the lower edge 12 of said plate.
  • edges 12 and 16 of the plate 11 are connected to the ends of the plate in two portions 20 and 21, cut according to arcs of a circle whose centers are coincident with that of the semi-circular recess 13, so as to allow the withdrawal of the plate 11 and of the spindle 10 by pushing on the said spindle, in the direction of the arrow F (FIG. 3).
  • the device of the invention also makes it possible to position a threaded sleeve C, of a known type, so that, after the setting of the concrete, the orifice of the sleeve is flush with one or the other of the faces of the slab.
  • the holding of the plate 22 is carried out in the same way as that described in connection with the plate 11.
  • the plate 22 is wound at one of its ends so as to form a collar 24, with a constricted opening, in which one engages force the C socket.
  • the support C is maintained by a tube 25, split longitudinally, the length of which is equal to the thickness of the slab to be produced and having, at its upper part, a collar 26, similar to that 24, for receiving the socket C.
  • the lower end of the tube 25 is engaged in the collar 24 of the plate 22.
  • auxiliary plate such as that 27. disposed perpendicularly to that 22, the assembly of the two plates being carried out by means of slots extending at mid-height.
  • a particular problem to be solved consists in making a reserve in the concrete in line with the joint plane of a tab 4 and an element 5 or, in line with the joint plane of two abutting elements 5 (Figure 9).
  • the plate 31 has a notch 32 in which the shoulder 6 of the end of the element 5 is housed.
  • the lower end of the pin 28 has a recess 33 so that said end has a tubular shape ( Figure 14).
  • a pin 34 is used, the lower end of which passes through a housing 35, placed upside down and the free edge 36 follows the outline of the legs 4 and of the elements 5 (right part of FIG. 9).
  • the assembly is removed by acting axially on the upper end of the spindle 34. This action has the effect of pushing back the plate 31, as described above, and the housing 35, whose sharp edges cut the material from which the tab 4 and the element 5 are made.
  • the housing 35 can be fixed by any means to the pin 34 but; these two parts can be independent and, in this case, the pin 34 has a shoulder part 37 which bears on the bottom of the housing 35.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

Abstract

Device which makes it possible to make recesses in concrete, of the type which uses blocks (3) placed on the bottom of the mould and comprises lateral lugs (4), characterised in that use is made of bracing elements (5) which are capable of fitting partially into the ends of the lugs (4) of the blocks (3) and abutting with one another. The bracing element (5) has at one end a shouldered part (6), of smaller cross-section, which is capable of fitting into a recess (7) of the lugs (4) of the block and at its other end a recess (8) identical to that mentioned above of the lugs, said recess (8) being capable of receiving either the shouldered end of another element or that of an assembly piece (9). The shouldered end of the bracing elements, the assembly pieces (9) and the recesses mentioned above have a semi-circular contour in cross-section. <IMAGE>

Description

La présente invention est relative à des perfectionnements aux dispositifs permettant d'effectuer des réserves dans le béton.The present invention relates to improvements to the devices enabling reserves to be made in concrete.

On sait qu'il est nécessaire de réaliser des "réserves" dans une dalle en béton,c'est-à-dire de créer dans celle-ci des volumes ne comportant pas de béton. Ces réserves sont pleines ou creuses.We know that it is necessary to make "reserves" in a concrete slab, that is to say to create in it volumes without concrete. These reserves are full or hollow.

Un réserve pleine est constituée par un corps étranger tel qu'un bloc de polystyrène noyé dans le béton.A full reserve is formed by a foreign body such as a block of polystyrene embedded in the concrete.

Une réserve creuse est généralement constituée par une cavité cylindrique permettant,par exemple,le passage d'une tige d'assemblage.A hollow reserve is generally formed by a cylindrical cavity allowing, for example, the passage of an assembly rod.

En l'état actuel de la technique,on utilise des cadres, assemblés pour former une bordure de contenance,reposant sur une surface plane, délimitant un volume dans lequel on coule le béton.In the current state of the art, frames are used, assembled to form a capacity border, resting on a flat surface, delimiting a volume in which the concrete is poured.

Pour réaliser des réserves pleines,on utilise des blocs prismatiques, en polystyrène expansé par exemple, présentant à la base de chacune de leurs faces latérales une patte permettant de positionner le bloc soit par rapport à un bloc voisin,soit par rapport à la bordure de contenance.To make full reserves, prismatic blocks are used, made of expanded polystyrene for example, having at the base of each of their lateral faces a tab making it possible to position the block either relative to a neighboring block, or relative to the edge of capacity.

Ce procédé ne donne pas satisfaction.This process is not satisfactory.

En premier lieu par ce que durant le coulage du béton, les blocs,qui sont simplement accolés par les extrémités des pattes précitées, peuvent se déplacer et, en second lieu,par ce qu'il n'est pas possible de faire varier la distance entre les blocs ou entre les blocs et les bordures.Firstly, because during the pouring of the concrete, the blocks, which are simply joined by the ends of the aforementioned legs, can move and, secondly, because it is not possible to vary the distance between blocks or between blocks and borders.

Le dispositif de l'invention permet de remédier à ces inconvénients et il est remarquable en ce qu'on utilise des éléments d'entretoisement pouvant s'encastrer partiellement dans les extrémités des pattes des blocs et s'abouter entre eux.The device of the invention overcomes these drawbacks and it is remarkable in that we use bracing elements which can partially fit into the ends of the legs of the blocks and join them together.

Chaque élément d'entretoisement affecte, en section,la même forme que la patte et présente à une extrémité une partie épaulée de plus faible section, susceptible d'être engagée dans un évidement, de même section, prévu à l'extrémité des pattes du bloc. Cet élément présente à son autre extrémité,un évidement identique à ceux prévus sur les pattes,ledit évidement pouvant donc recevoir la partie épaulée d'un autre élément d'entretoisement ou l'extrémité d'une pièce d'assemblage dont la section est identique à celle de ladite partie épaulée.Each bracing element has, in section, the same shape as the leg and has at one end a shouldered portion of smaller section, capable of being engaged in a recess, of the same section, provided at the end of the legs of the block. This element has at its other end, a recess identical to those provided on the legs, said recess can therefore receive the stepped part of another bracing element or the end of an assembly part whose section is identical to that of said shoulder part.

Comme on le verra plus loin, ce dispositif est particulière­ment avantageux lorsqu'il s'agit de maintenir perpendiculairement au plan de la dalle à couler une broche cylindrique destinée à réaliser une réserve creuse. Ce dispositif est avantageux,aussi, lorsqu'il s'agit de positionner des douilles filetées.As will be seen below, this device is particularly advantageous when it is a question of maintaining perpendicular to the plane of the slab to be poured a cylindrical spindle intended to produce a hollow reserve. This device is also advantageous when it comes to positioning threaded bushings.

Selon une autre caractéristique de l'invention,on utilise une plaque maintenue pincée comme dans la demande principale et présentant, a sa partie supérieure, une languette sur laquelle on engage la broche de réservation.According to another characteristic of the invention, a plate is used which is kept pinched as in the main application and having, at its upper part, a tongue on which the reservation pin is engaged.

L'invention sera mieux comprise par la description qui va suivre,faite en se référant aux dessins annexés à titre d'exemple indicatif seulement,sur lesquels:

  • La figure 1 est une vue partielle, en perspective, montrant la mise en oeuvre du dispositif de l'invention ;
  • La figure 2 est une vue partielle,en coupe, montrant la réalisation d'une réserve creuse à l'aide d'une broche cylindrique;
  • Les figures 3 et 4 sont des vues analogues à celle 2, montrant le retrait de la broche cylindrique après la prise du béton ;
  • La figure 5 est une vue partielle montrant, à plus grande échelle, le détail A de la figure 2;
  • La figure 6 est la vue de gauche de la figure 5;
  • Les figures 7 et 8 sont des vues en perspective, montrant les moyens utilisés pour positionner,soit en position haute,soit en position basse, une douille filetée usuelle.
  • La figure 9 est une vue en perspective montrant la mise en oeuvre d'une autre caractéristique du dispositif de l'invention ;
  • La figure 10 est une vue partielle,en coupe montrant le maintien d'une broche de réservation au-dessus du joint d'une patte latérale et d'un élément d'entretoisement;
  • La figure 11 est une vue analogue à celle 10 montrant le retrait de la broche ;
  • La figure 12 est une vue analogue à celle 10 relative à un autre mode de réalisation ;
  • La figure 13 est une vue analogue à celle 11 mais relative au mode de réalisation de la figure 12;
  • La figure 14 est une vue partielle en perspective éclatée montrant la broche de réservation et la patte des figures 9 à 13.
The invention will be better understood from the description which follows, made with reference to the accompanying drawings by way of indicative example only, in which:
  • Figure 1 is a partial perspective view showing the implementation of the device of the invention;
  • Figure 2 is a partial view, in section, showing the production of a hollow reserve using a cylindrical pin;
  • Figures 3 and 4 are views similar to that 2, showing the withdrawal of the cylindrical spindle after setting the concrete;
  • Figure 5 is a partial view showing, on a larger scale, the detail A of Figure 2;
  • Figure 6 is the left view of Figure 5;
  • Figures 7 and 8 are perspective views showing the means used to position, either in the high position or in the low position, a conventional threaded sleeve.
  • Figure 9 is a perspective view showing the implementation of another characteristic of the device of the invention;
  • Figure 10 is a partial sectional view showing the maintenance of a reservation pin above the joint of a side tab and a bracing element;
  • Figure 11 is a view similar to that showing the removal of the pin;
  • Figure 12 is a view similar to that 10 relating to another embodiment;
  • Figure 13 is a view similar to that 11 but relating to the embodiment of Figure 12;
  • FIG. 14 is a partial exploded perspective view showing the reservation pin and the tab of FIGS. 9 to 13.

En se reportant aux dessins, on voit que, de la façon usuelle, 1 est une surface plane,horizontale, constituant le fond d'un moule délimité par des règles 2,formant bordures de contenance,dans lequel on désire couler du béton.Referring to the drawings, it can be seen that, in the usual way, 1 is a flat, horizontal surface, constituting the bottom of a mold delimited by rules 2, forming capacity borders, in which it is desired to pour concrete.

De la façon connue, on dispose sur le fond 1 des blocs 3 réalisés, par exemple, en polystyrène expansé et présentant vers leur base et sur chacune de leurs faces latérales, des pattes 4.In known manner, there are on the bottom 1 blocks 3 made, for example, of expanded polystyrene and having towards their base and on each of their lateral faces, tabs 4.

Selon l'invention, le calage des blocs entre eux, ou par rapport aux règles, peut être réalisé à l'aide d'éléments d'entretoisement 5 présentant, chacun,à une de leurs extrémités, une partie épaulée 6,de plus faible section, susceptible d'être engagée dans un évidement 7, prévu à l'extrémité de chacune des pattes 4.According to the invention, the wedging of the blocks with one another, or with respect to the rules, can be carried out with the aid of bracing elements 5 each having, at one of their ends, a shouldered part 6, of smaller section, capable of being engaged in a recess 7, provided at the end of each of the legs 4.

Chaque élément 5 présente, à son autre extrémité, un évidement 8 identique à ceux 7, permettant à l'aide d'une pièce d'assem­blage 9 qui peut être engagée par l'une de ses extrémités dans un évidement 8 et par l'autre dans l'un des évidements 7 d'un bloc 3, de relier ledit bloc ou dit élément (par exemple :le bloc 3a à l'élément 5a de la figure 1).Each element 5 has, at its other end, a recess 8 identical to those 7, allowing by means of an assembly part 9 which can be engaged by one of its ends in a recess 8 and by the another in one of the recesses 7 of a block 3, to connect said block or said element (for example: block 3a to element 5a in FIG. 1).

Il est à noter que les évidements 7 et 8 débouchent sur le fond 1 ce qui permet,notamment, la mise en place des blocs 3 par un déplacement perpendiculaire audit fond.It should be noted that the recesses 7 and 8 open onto the bottom 1 which allows, in particular, the positioning of the blocks 3 by a movement perpendicular to said bottom.

Selon un mode de réalisation,dont les avantages ressortiront plus loin, les parties épaulées 6 affectent, selon une section effectuée par un plan vertical perpendiculaire à l'axe de l'élément,un profil semi-circulaire. Les évidements 7 et 8 présentent un profil identique ainsi que les pièces 9.According to one embodiment, the advantages of which will emerge below, the shouldered parts 6 affect, in a section made by a vertical plane perpendicular to the axis of the element, a semi-circular profile. The recesses 7 and 8 have an identical profile as well as the parts 9.

Pour réaliser une réserve creuse dans le béton,perpendiculaire­ment aux faces de la dalle D (figure 2),on utilise une broche 10 coopérant avec une plaque 11.To make a hollow reserve in concrete, perpendicular to the faces of the slab D (FIG. 2), a spindle 10 cooperating with a plate 11 is used.

La plaque 11 présente, sur son bord inférieur 12,un évidement semi-circulaire 13 dont la section est identique à celle de la partie 6 des éléments 5 ou à celle des pièces 9.The plate 11 has, on its lower edge 12, a semi-circular recess 13 whose section is identical to that of the part 6 of the elements 5 or that of the parts 9.

Comme cela ressort de la figure 1 notamment, la plaque 11 est maintenue perpendiculairement au fond 1, pincée entre l'ex­trémité d'une patte 4 et celle d'un élément 5,ladite plaque chevauchant,selon le cas, une partie 6 ou une pièce 9.As can be seen from FIG. 1 in particular, the plate 11 is held perpendicular to the bottom 1, pinched between the end of a tab 4 and that of an element 5, said plate overlapping, as the case may be, a part 6 or a Exhibit 9.

La broche 10 présente, à son extrémité inférieure,une fente 14(figure 4) dont la largeur est égale à l'épaisseur de la plaque 11.The pin 10 has, at its lower end, a slot 14 (FIG. 4) whose width is equal to the thickness of the plate 11.

Le positionnement de la broche 10, par rapport à la plaque 11,est assuré par une encoche 15,prévue sur le bord supérieur 16 de ladite plaque.The positioning of the pin 10, relative to the plate 11, is ensured by a notch 15, provided on the upper edge 16 of said plate.

Comme cela ressort tout particulièrement de la figure 5,le profil de l'encoche 15 est délimité par une partie rectiligne, qui se raccorde obliquement au bord supérieur de la plaque par son extrémité située vers l'évidement 13 et par une partie curvi­ligne raccordant l'autre extrémité de ladite partie rectiligne, et ledit bord supérieur de la plaque.Le fond de la fente 14 de la broche 10 est conformé de fa on à épouser le profil de l'encoche 15.As is particularly apparent from FIG. 5, the profile of the notch 15 is delimited by a rectilinear part, which is connected obliquely to the upper edge of the plate by its end situated towards the recess 13 and by a curvilinear part connecting the other end of said rectilinear part, and said upper edge of the plate. The bottom of the slot 14 of the pin 10 is shaped so as to match the profile of the notch 15.

Pour parfaire le positionnement de la broche,on utilise une bague 17,réalisée en un matériau élastiquement déformable,venant s'engager sur l'extrémité inférieure 18 de la broche 10,le posi­tionnement de ladite bague, par rapport à la plaque 11,étant assuré par deux encoches 19 prévues sur le bord inférieur 12 de ladite plaque.To perfect the positioning of the spindle, a ring 17, made of an elastically deformable material, is used which engages on the lower end 18 of the spindle 10, the positioning of said ring, relative to the plate 11, being provided by two notches 19 provided on the lower edge 12 of said plate.

Les bords 12 et 16 de la plaque 11 se raccordent aux extrémités de la plaque selon deux portions 20 et 21, découpées selon des arcs de cercle dont les centres sont confondus avec celui de l'évi­dement semi-circulaire 13, de façon à permettre le retrait de la plaque 11 et de la broche 10 en effectuant une poussée sur ladite broche,selon la direction de la flèche F (figure 3).The edges 12 and 16 of the plate 11 are connected to the ends of the plate in two portions 20 and 21, cut according to arcs of a circle whose centers are coincident with that of the semi-circular recess 13, so as to allow the withdrawal of the plate 11 and of the spindle 10 by pushing on the said spindle, in the direction of the arrow F (FIG. 3).

Le dispositif de l'invention permet également de positionner une douille filetée C, d'un type connu, de façon à ce que, après la prise du béton, l'orifice de la douille affleure l'une ou l'autre des faces de la dalle.The device of the invention also makes it possible to position a threaded sleeve C, of a known type, so that, after the setting of the concrete, the orifice of the sleeve is flush with one or the other of the faces of the slab.

Comme la dalle est coulée à plat dans son moule, il faut maintenir la douille C en position basse ( figure 7) ou en position haute ( figure 8).As the slab is cast flat in its mold, it is necessary to keep the bushing C in the low position (figure 7) or in the high position (figure 8).

Dans le premier cas, ce résultat est obtenu à l'aide d'une plaque 22, de faible épaisseur, présentant sur son bord inférieur un évidement 23,identique à celui 13 de la plaque 11 précitée.In the first case, this result is obtained using a plate 22, of small thickness, having on its lower edge a recess 23, identical to that 13 of the aforementioned plate 11.

Le maintien de la plaque 22 est réalisé de la même façon que celle décrite à propos de la plaque 11.The holding of the plate 22 is carried out in the same way as that described in connection with the plate 11.

La plaque 22 est enroulée à l'une de ses extrémités de façon à former un collier 24, à ouverture rétreinte, dans lequel on engage à force la douille C.The plate 22 is wound at one of its ends so as to form a collar 24, with a constricted opening, in which one engages force the C socket.

Dans le cas de la figure 8, le maintien de la douille C est assuré par un tube 25, fendu longitudinalement, dont la longueur est égale à l'épaisseur de la dalle à réaliser et pré­sentant, à sa partie supérieure, un collier 26,analogue à celui 24, de réception de la douille C.In the case of FIG. 8, the support C is maintained by a tube 25, split longitudinally, the length of which is equal to the thickness of the slab to be produced and having, at its upper part, a collar 26, similar to that 24, for receiving the socket C.

L extrémité inférieure du tube 25 est engagée dans le collier 24 de la plaque 22.The lower end of the tube 25 is engaged in the collar 24 of the plate 22.

Pour améliorer la stabilité de la plaque 22, réalisée en tôle mince, on peut utiliser une plaque auxiliaire telle que celle 27. disposée perpendiculairement à celle 22, l'assemblage des deux plaques étant réalisé au moyen de fentes s étendant à mi-­hauteur.To improve the stability of the plate 22, made of thin sheet metal, it is possible to use an auxiliary plate such as that 27. disposed perpendicularly to that 22, the assembly of the two plates being carried out by means of slots extending at mid-height.

Un problème particulier à résoudre consiste à réaliser une réserve dans le béton au droit du plan de joint d'une patte 4 et d'un élément 5 ou, au droit du plan de joint de deux éléments 5 aboutés (Figure 9).A particular problem to be solved consists in making a reserve in the concrete in line with the joint plane of a tab 4 and an element 5 or, in line with the joint plane of two abutting elements 5 (Figure 9).

Ce résultat est obtenu à l'aide d'une broche 28 présentant à sa partie inférieure une fente 29 dans laquelle peut s'engager une languette 30 située à la partie supérieure d'une plaque 31, disposée sur chant et maintenue pincée entre une patte 4 et un élément 5.This result is obtained by means of a pin 28 having at its lower part a slot 29 in which a tongue 30 can be engaged located at the upper part of a plate 31, arranged on edge and kept pinched between a tab. 4 and an element 5.

La plaque 31 présente une échancrure 32 dans laquelle se loge l'épaulement 6 de l'extrémité de l'élément 5.The plate 31 has a notch 32 in which the shoulder 6 of the end of the element 5 is housed.

L'extrémité inférieure de la broche 28 présente un évide­ment 33 de façon à ce que ladite extrémité affecte une forme tubulaire ( Figure 14).The lower end of the pin 28 has a recess 33 so that said end has a tubular shape (Figure 14).

Pour ôter la broche 28,après la prise du béton, il suffit de la repousser axialement en agissant sur son extrémité supérieure (figure 11). Ce faisant, la plaque 31 tranche l'épaulement 6 et l'extrémité de la broche défonce les parties correspondantes de la patte et de l'élément d'entretoisement,réalisées en polystyrène expansé. Un meilleur résultat est obtenu si l'extrémité infé­rieure et tubulaire de la broche 28 est affûtée pour former un biseau.To remove the spindle 28, after setting the concrete, it suffices to push it axially by acting on its upper end (Figure 11). In doing so, the plate 31 cuts the shoulder 6 and the end of the spindle smashes the corresponding parts of the tab and of the bracing element, made of expanded polystyrene. A better result is obtained if the lower tubular end of the spindle 28 is sharpened to form a bevel.

Pour certaines applications, il est nécessaire que le trou laissé dans le béton, après le retrait de la broche, débouche sur une surface plane et perpendiculaire à l'axe dudit trou pour constituer la surface d'appui d'une tête de vis ou d'un écrou.For certain applications, it is necessary that the hole left in the concrete, after the removal of the spindle, emerges on a flat surface and perpendicular to the axis of said hole to constitute the bearing surface of a screw head or of 'a nut.

Dans ce cas, on utilise une broche 34 dont l'extrémité inférieure traverse un boîtier 35,disposé à l'envers et dont le bord libre 36 épouse le contour des pattes 4 et des éléments 5 (partie de droite de la figure 9).In this case, a pin 34 is used, the lower end of which passes through a housing 35, placed upside down and the free edge 36 follows the outline of the legs 4 and of the elements 5 (right part of FIG. 9).

Après la prise du béton, le retrait de l'ensemble s'effectue en agissant axialement sur l'extrémité supérieure de la broche 34. Cette action a pour effet de repousser la plaque 31,comme décrit ci-dessus, et le boîtier 35,dont lés bords tranchants découpent la matière dont sont constitués la patte 4 et l'élément 5.After the concrete has set, the assembly is removed by acting axially on the upper end of the spindle 34. This action has the effect of pushing back the plate 31, as described above, and the housing 35, whose sharp edges cut the material from which the tab 4 and the element 5 are made.

De cette façon, et comme cela ressort de la figure 13,il est ainsi possible de ménager dans le béton une cavité E présen­tant une surface plane P disposée perpendiculairement à l'axe du trou réalisé par la broche.In this way, and as can be seen from FIG. 13, it is thus possible to provide in the concrete a cavity E having a planar surface P arranged perpendicular to the axis of the hole made by the spindle.

Le boîtier 35 peut être fixé par tous moyens à la broche 34 mais; ces deux pièces peuvent être indépendantes et,dans ce cas, la broche 34 présente une partie épaulée 37 qui prend appui sur le fond du boîtier 35.The housing 35 can be fixed by any means to the pin 34 but; these two parts can be independent and, in this case, the pin 34 has a shoulder part 37 which bears on the bottom of the housing 35.

Claims (12)

1-Dispositif permettant d'effectuer des réserves dans le béton, du genre de ceux mettant en oeuvre des blocs (3) posés sur le fond du moule et comportant des pattes (4) latérales, caractérisé en ce qu'on utilise des éléments d'entretoisement (5) pouvant s'encastrer partiellement dans les extrémités des pattes (4) des blocs (3) et s'abouter entre eux.1-Device making it possible to make reservations in concrete, of the type of those using blocks (3) placed on the bottom of the mold and comprising lateral tabs (4), characterized in that elements of 'bracing (5) can be partially embedded in the ends of the lugs (4) of the blocks (3) and butt between them. 2-Dispositif permettant d'effectuer des réserves dans le béton,selon la revendication 1, caractérisé en ce que l'élément d'entretoisement (5) présente, à une extrémité,une partie (6) épaulée, de plus faible section,susceptible de s'encastrer dans un évidement (7) des pattes (4) du bloc et, à son autre extrémité, un évidement (8) identique à celui précité des pattes, ledit évidement (8) pouvant recevoir soit l'extrémité épaulée d'un autre élément,soit celle d'une pièce d'assemblage (9).2-Device for making reserves in the concrete, according to claim 1, characterized in that the bracing element (5) has, at one end, a shoulder part (6), of smaller section, susceptible to fit into a recess (7) of the legs (4) of the block and, at its other end, a recess (8) identical to that mentioned above of the legs, said recess (8) being able to receive either the stepped end of another element, that of an assembly part (9). 3-Dispositif permettant d'effectuer des réserves dans le béton, selon la revendication 2, caractérisé en ce que l'extrémité épaulée des éléments d'entretoisement, les pièces d'assemblage (9) et les évidements précités,présentent en section un contour semi-circulaire.3-Device for making reserves in the concrete, according to claim 2, characterized in that the shoulder end of the bracing elements, the connecting parts (9) and the aforementioned recesses, have in section a contour semi-circular. 4- Dispositif permettant d'effectuer des réserves dans le béton,selon la revendication 3,caractérisé en ce que le positionnement et le maintien d'une broche de réservation (10) disposée perpen­diculairement au plan de la dalle à couler,sont assurés par une plaque (11) disposée sur chant et présentant sur son bord inférieur (12) un évidement (13) à contour semi-circulaire, susceptible de chevaucher une partie épaulée (6) ou une pièce d'assemblage (9), ladite broche (10) présentant à son extrémité inférieure une fente longitudinale (14) pour permettre son engagement sur la plaque (11) dont les extrémités sont découpées selon des arcs de cercle dont les centres sont confondus avec celui de l'évidement (13).4- Device for making reservations in concrete, according to claim 3, characterized in that the positioning and the maintenance of a reservation pin (10) arranged perpendicular to the plane of the slab to be poured, are ensured by a plate (11) arranged on edge and having on its lower edge (12) a recess (13) with semicircular contour, capable of overlapping a shouldered part (6) or an assembly part (9), said spindle (10 ) having at its lower end a longitudinal slot (14) to allow its engagement on the plate (11), the ends of which are cut according to arcs of a circle whose centers coincide with that of the recess (13). 5-Dispositif permettant d'effectuer des réserves dane le béton, selon la revendication 4, caractérisé en ce que le positionnement de la broche (10) sur la plaque (11) est assuré par une encoche (15) prévue sur le bord supérieur de ladite plaque,le profil de ladite encoche étant constitué par une partie rectiligne oblique se raccordant par son extrémité située vers l'échancrure de la plaque, au bord supérieur de cette dernière et se raccordant, par son autre extrémité, à une partie curviligne s'étendant jusqu'audit bord supérieur de la plaque et en ce que le fond de la fente de la broche présente un profil complémentaire identique.5-Device for making reserves in concrete, according to claim 4, characterized in that the positioning of the spindle (10) on the plate (11) is ensured by a notch (15) provided on the upper edge of said plate, the profile of said notch being constituted by an oblique rectilinear part which is connected by its end situated towards the notch of the plate, at the upper edge of the latter and which is connected, by its other end, to a curvilinear part extending to said upper edge of the plate and in that the bottom of the spindle slot has an identical complementary profile. 6-Dispositif permettant d'effectuer des réserves dans le béton, selon l'une quelconque des revendications 4 et 5,carac­térisé en ce que le maintien de la broche sur la plaque est assuré par une bague (17) engagée sur l'extrémité inférieure de ladite broche, le positionnement de ladite bague ,par rapport à la plaque, étant assuré par deux encoches (19) dont la section est au moins égale à celle de ladite bague qui pénètre dans celles-ci.6-Device for making reservations in the concrete, according to any one of claims 4 and 5, characterized in that the maintenance of the spindle on the plate is ensured by a ring (17) engaged on the lower end of said spindle, the positioning of said ring, relative to the plate, being ensured by two notches (19) whose cross section is at least equal to that of said ring which penetrates therein. 7-Dispositif permettant d'effectuer des réserves dans le béton,selon la revendication 4,caractérisé en ce que la maintien d'une douille filetée (C),d'un type usuel, est assuré par une plaque (22) présentant sur son bord inférieur un évidement (23), identique à celui (13) des plaques (11), ladite plaque (22) étant enroulée dans son plan à une de ses extrémités de façon à former un collier (24), à ouverture rétreinte,dans lequel on engage à force la douille C.7-Device for making reservations in the concrete, according to claim 4, characterized in that the maintenance of a threaded sleeve (C), of a usual type, is ensured by a plate (22) having on its lower edge a recess (23), identical to that (13) of the plates (11), said plate (22) being wound in its plane at one of its ends so as to form a collar (24), with a constricted opening, in which one forcibly engages the socket C. 8-Dispositif permettant d'effectuer des réserves dans le béton,selon la revendication 7,caractérisé en ce que pour maintenir une douille (C) en position haute,on utilise un tube fendu (25), dont la longueur est égale à l'épaisseur de la dalle à réaliser, engagé par son extrémité inférieure dans le collier (24) de la plaque (22) et présentant, à sa partie supérieure un collier (26), analogue à celui (24) de ladite plaque, dans lequel on engage ladite douille (C).8-Device for making reserves in the concrete, according to claim 7, characterized in that to maintain a socket (C) in the high position, using a split tube (25), whose length is equal to thickness of the slab to be produced, engaged by its lower end in the collar (24) of the plate (22) and having, at its upper part a collar (26), similar to that (24) of said plate, in which engages said socket (C). 9-Dispositif permettant d'effectuer des réserves dans le béton,selon l'une quelconque des revendications précédentes, caractérisé en ce qu'on dispose une broche de réservation (28) au droit du plan de joint formé par l'extrémité d'une patte (4), d'un bloc (3),et celle d'un élément d'entretoisement (5),ladite broche présentant à sa partie inférieure une fente (29) dans laquelle s'engage une languette (30) prévue à la partie supérieu­re d'une plaque (31) maintenue pincée entre une patte (4) et l'élément d'entretoisement (5) correspondant.9-Device for making reservations in concrete, according to any one of the preceding claims, characterized in that there is a reservation pin (28) in line with the joint plane formed by the end of a tab (4), of a block (3), and that of a bracing element (5), said pin having at its lower part a slot (29) in which engages a tongue (30) provided at the upper part of a plate (31) held pinched between a tab (4) and the bracing element (5) corresponding. 10-Dispositif permettant d'effectuer des réserves dans le béton,selon la revendication 9,caractérisé en ce que la partie inférieure au moins, de la broche (28) est tubulaire et affûtée pour former un biseau.10-Device for making reservations in the concrete, according to claim 9, characterized in that the lower part at least, of the spindle (28) is tubular and sharpened to form a bevel. 11-Dispositif permettant d'effectuer des réserves dane le béton, selon l'une quelconque des revendications 9 et 10, caractérisé en ce que la broche (34) traverse le fond d'un boîtier (35) dont les bords reposent sur la patte (4) et l'élément d'entretoisement (5) correspondant, ladite broche pouvant repousser ledit boîtier,dont les bords sont affûtés.11-Device for carrying out reserves in concrete, according to any one of claims 9 and 10, characterized in that the spindle (34) passes through the bottom of a housing (35) whose edges rest on the tab (4) and the corresponding spacer element (5), said spindle being able to repel said housing, the edges are sharp. 12-Dispositif permettant d'effectuer des réserves dans le béton, selon la revendication 11,caractérisé en ce que le fond du boîtier est constitué par une surface plane s'étendant perpen­diculairement à l'axe de la broche.12-Device for carrying out reserves in concrete, according to claim 11, characterized in that the bottom of the housing is constituted by a flat surface extending perpendicular to the axis of the spindle.
EP89400589A 1988-03-04 1989-03-03 Devices for making recesses in concrete Withdrawn EP0331583A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR8802752 1988-03-04
FR8802752A FR2628025B1 (en) 1988-03-04 1988-03-04 IMPROVEMENTS ON DEVICES FOR MAKING RESERVES IN CONCRETE
FR8810601A FR2635041B2 (en) 1988-03-04 1988-08-05 IMPROVEMENTS ON DEVICES FOR MAKING RESERVES IN CONCRETE
FR8810601 1988-08-05

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EP0331583A1 true EP0331583A1 (en) 1989-09-06

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EP89400589A Withdrawn EP0331583A1 (en) 1988-03-04 1989-03-03 Devices for making recesses in concrete

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EP (1) EP0331583A1 (en)
FR (1) FR2635041B2 (en)

Cited By (3)

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WO1994002694A1 (en) * 1992-07-20 1994-02-03 Rascor Spezialbau Gmbh Device and method for introducing sealing material into concrete joint-sealing systems
GB2318081A (en) * 1996-10-10 1998-04-15 Aco Technologies Plc Casting a drainage channel block
EP1605112B1 (en) * 2004-06-11 2009-12-16 OP-deck Holding B.V. Method for the production of a building construction as well as formwork therefor

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WO1994002694A1 (en) * 1992-07-20 1994-02-03 Rascor Spezialbau Gmbh Device and method for introducing sealing material into concrete joint-sealing systems
GB2318081A (en) * 1996-10-10 1998-04-15 Aco Technologies Plc Casting a drainage channel block
GB2318081B (en) * 1996-10-10 2000-05-31 Aco Technologies Plc Casting process
EP1605112B1 (en) * 2004-06-11 2009-12-16 OP-deck Holding B.V. Method for the production of a building construction as well as formwork therefor

Also Published As

Publication number Publication date
FR2635041A2 (en) 1990-02-09
FR2635041B2 (en) 1990-11-23

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