EP2604775A1 - Form panel comprising a device for guiding a spacer stem - Google Patents

Form panel comprising a device for guiding a spacer stem Download PDF

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Publication number
EP2604775A1
EP2604775A1 EP20120008223 EP12008223A EP2604775A1 EP 2604775 A1 EP2604775 A1 EP 2604775A1 EP 20120008223 EP20120008223 EP 20120008223 EP 12008223 A EP12008223 A EP 12008223A EP 2604775 A1 EP2604775 A1 EP 2604775A1
Authority
EP
European Patent Office
Prior art keywords
support
formwork
spacer
rod
front face
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.)
Granted
Application number
EP20120008223
Other languages
German (de)
French (fr)
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EP2604775B1 (en
Inventor
Thierry Braud
Patrick Micheneau
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.)
Sateco SA
Original Assignee
Sateco SA
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Filing date
Publication date
Application filed by Sateco SA filed Critical Sateco SA
Publication of EP2604775A1 publication Critical patent/EP2604775A1/en
Application granted granted Critical
Publication of EP2604775B1 publication Critical patent/EP2604775B1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
    • E04G17/06—Tying means; Spacers ; Devices for extracting or inserting wall ties
    • E04G17/0642—Devices for extracting or inserting wall ties or parts thereof
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
    • E04G17/002—Workplatforms, railings; Arrangements for pouring concrete, attached to the form
    • 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
    • E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
    • E04G17/06—Tying means; Spacers ; Devices for extracting or inserting wall ties
    • E04G17/065—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning
    • E04G17/0651—One-piece elements
    • 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
    • E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
    • E04G17/06—Tying means; Spacers ; Devices for extracting or inserting wall ties
    • E04G17/065—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning
    • E04G17/0651—One-piece elements
    • E04G17/0652—One-piece elements fully recoverable
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
    • E04G2011/067—Integrated forms comprising shuttering skin, bracing or strutting arrangements, workplatforms and railings

Definitions

  • the invention relates to the field of construction formwork, and more particularly the formwork shuttering.
  • a panel conventionally comprises a wall, a front face, called formwork face, is intended to extend inside the formwork to come into contact with the material cast in the formwork.
  • the wall of the panel has a plurality of orifices therethrough transversely in each of which a spacer can be inserted.
  • a device for guiding a spacer rod is conventionally attached to the rear face of the wall of the box facing each spacer hole of the formwork.
  • a spacer rod conventionally comprises a proximal end for manipulation by an operator and a distal end having a thread for allowing its screwing into a complementary threaded portion.
  • an operator grasps a spacer rod by its proximal end 11 and introduces its distal end 12 into a first guiding device 4 of the first panel B1 so that the spacer rod 1 enters a first spacer hole 2 of the first panel B1 substantially perpendicular to the first form face AV1.
  • the operator then introduces the distal end 12 of the spacer rod 1 into a spacer hole 2 of the second panel B2 so that it is received and locked in the second guide device 4 of the second panel B2.
  • each guiding device 4 comprises a support plate 41 parallel to the formwork front face AV1, AV2 on which the clamping nut 3 comes to rest. In position locked, the spacer rod 1 keeps the form faces AV1, AV2 parallel to each other as shown in FIG. figure 1 .
  • an operator To remove a spacer rod 1, an operator conventionally uses a key to apply a loosening torque to the clamping nut 3 from the rear face AR1 of the first panel B1. Due to the mechanical tension, the clamping nut 3 is firmly locked and the operator is forced to force to apply a sufficient loosening torque. When the operator can not loosen the clamping nut 3, he is forced to add an accessory to lengthen his key and thus lengthen the lever arm of the key so as to apply a greater loosening torque.
  • This implementation is particularly restrictive because it requires the operator to have such an extension tube.
  • the withdrawal time of a spacer rod 1 is increased which is detrimental. In extreme cases, when the use of an extension attachment does not make it possible to loosen the clamping nut 3, the operator is forced to cut the clamping nut 3 in order to remove the spacer rod 11 and thus release the B1, B2 banches.
  • the present invention aims to eliminate at least some of these disadvantages to improve the removal of a spacer rod connecting two shuttering formwork after use.
  • the invention relates to a shuttering panel comprising a formwork front face in which is formed at least one spacer hole and a rear face on which is mounted a device for guiding a spacer rod through said orifice spacer, said guide device comprising a support support adapted to be in contact with a clamping nut locking the position of the spacer rod in said spacer hole, the guide device comprising means for moving the spacer; support support with respect to the formwork front face of the formwork.
  • the displacement means it is possible to release the tightening tension of the support support, which facilitates the loosening of the clamping nut and thus the removal of the spacer rod.
  • the support support By bringing the support support closer to the formwork front face, the support support is moved away from the clamping nut, which makes it possible to reduce the mechanical tension between the nut and the support support.
  • the displacement means are adapted to incline the support support relative to the formwork front face of the formwork.
  • Only a portion of the support support is movable which facilitates the design of the guide device and extends its life.
  • the displacement means are adapted to move the support support parallel to the formwork front face of the formwork.
  • the support support is in the form of a flat plate and advantageously allows a plane contact with the clamping nut which secures its clamping.
  • the support support comprises a guide orifice of a spacer rod in order to precisely guide the spacer rod.
  • the guide orifice is in the form of a groove, preferably vertical, to allow the inclination of the support support while guiding the spacer rod.
  • the displacement means comprise a pivot rod adapted to rotate the support support relative to the formwork front face.
  • a guide device with a pivot rod is robust which improves its service life.
  • the displacement means comprise an inclination rod rotatably mounted relative to the bearing support, the inclination rod comprising at least one cam whose circumferential surface is arranged to bear against a stop portion of the herehe.
  • the displacement of the support support is controlled by modifying the angular position of the inclination rod in an easy and practical manner.
  • the invention further relates to a method of removing a spacer rod mounted between two shuttering boxes opposite, at least one of the panels having a spacer hole and a guiding device in which is mounted the spacer rod through said spacer port, said guide device having a bearing support on which is tightened a clamping nut locking the position of the spacer rod in said spacer hole, wherein the support support is moved relative to the formwork front face of the formwork so that the support support is spaced from the clamping nut and the spacer rod is removed.
  • the mechanical tension relative to the support support is released prior to removal of the spacer rod which accelerates the withdrawal and limits the physical fatigue of the operator.
  • the support support is inclined relative to the formwork front face of the formwork so that the support support is spaced from the clamping nut.
  • FIG. 3 a formwork shuttering B comprising a vertical wall 20, defining a formwork front face AV which is flat and a rear face AR opposite to the flat front face AV.
  • wall 20 is meant a thickness of the panel B formed of one or more panels, identical or different.
  • the vertical wall 20 of the wall B is pierced, in this example, four spacer holes 2 extending perpendicularly to the plane defined by the formwork front side AV. Each spacer hole 2 is adapted to receive a spacer 1 for adjusting the parallelism of AV formwork faces of the panels B vis-à-vis to ensure the constant thickness of the formwork between the two panels B.
  • the spacer 1 is in the form of an elongated body intended to extend transversely, in the use position, through the formwork surfaces AV of two panels B vis-à-vis.
  • Each spacer 1 has a proximal end 11 to be manipulated by an operator and a distal end 12 having a thread to allow its screwing into a complementary threaded portion.
  • a clamping nut 3 is screwed to the proximal end 11 of the spacer rod 1 to lock it in position.
  • formwork board B comprises a device 5 for guiding a spacer rod 1 mounted on its rear face AR to allow the guide of a spacer rod 1 in a spacer hole 2 of the formwork board B.
  • a housing 21 is formed in the rear face AR of the wall 20 of the box B to accommodate the guide device 5 as shown in FIG. figure 4 .
  • the guiding device 5 comprises a support support 51 on which is intended to rest the clamping nut 3 when the latter is screwed to the proximal end 11 of the spacer rod 1.
  • the bearing support 51 is in the form of a support plate 51 which is flat and which extends substantially vertically so that the nut 3 is in plane contact with the support plate 51 when the latter is screwed.
  • the support plate 51 has a guide through orifice 52 in which the spacer rod 1 is intended to extend in the clamping position.
  • the guide through orifice 52 is in the form of a substantially vertical groove ( Figure 4 ).
  • the guiding device 5 comprises means for moving the support support 51 relative to the front formwork AV of the panel B.
  • these means when the latter is screwed in, it is possible to move the support support 51 away from the clamping nut 3, in order to significantly reduce the mechanical tension in the clamping nut 3, the spacer rod 1 and the support support 51. Indeed, by moving the support support 51, it no longer exerts mechanical force on the clamping nut 3. It can then unscrew the clamping nut 3 and remove the spacer rod 1 easily, without excessive effort.
  • the displacement means include, in this example, a pivot rod 6 adapted to allow the inclination of the support support 51 relative to the front formwork AV of the panel B.
  • the pivot rod 6 extends horizontally and is mounted in guide holes 53 of the guiding device 5 ( Figure 7B ) and in guide lights 23 ( Figure 4 ) of housing 21 of panel B.
  • the pivot rod 6 forms a pivot connection between the upper part of the support support 51 and the housing 21 of the B form to allow angular displacement of the lower part of the support support 51.
  • the support support 51 can tilt relative to the front formwork front AV of the B-side to facilitate the loosening the clamping lock 3 as will be presented later.
  • the guiding device 5 comprises a base 50 in the shape of a U, integral with the support support 51, which is mounted in the housing 21 of the panel B.
  • the guide lights 53 of the guiding device 5 are formed in the lateral parts of the base 50 of the guiding device 5.
  • the displacement means of the guide device 5 further comprises a tilt rod 7, rotatably mounted relative to the device 5, on which are mounted integrally two cams 8 whose circumferential surface 81 is arranged to bear against an abutment portion 22 of the wall B as shown in FIG. figure 6 .
  • Such cams 8 advantageously make it possible to modify the distance between the lower part of the support support 51 and the abutment portion 22 so as to modify the inclination of the support support 51.
  • the inclination of the support support 51 is as a function of the angular position of the inclination rod 7.
  • the inclination rod 7 extends in a horizontal housing formed in the guiding device 5 and comprises, at one of its ends, an activation head which is, in this example, of hexagonal shape so that it can be turned with a key.
  • the shape of the activation head is similar to the shape of the clamping portion of the clamping nut 3 so that the inclining rod 7 and the clamping nut 3 can be rotated. by the same key.
  • the cams 8 comprise a circumferential surface 81 adapted to be in contact with an abutment portion 22 of the panel B so as to move the support support 51 away from the wall 20 as a function of the angular position of the cams 8.
  • each guide device 1 When placing the formwork, before the concrete is poured into the formwork, the support 51 of each guide device 1 is locked in a vertical position so as to extend parallel to the formwork front face AV of the panel B.
  • an operator adjusts the angular position of the tilt rod 7 so that the cams 8 rest on the abutment portion 22 of the panel B.
  • the support support 51 extends in accordance with the prior art.
  • the operator can then introduce a spacer rod 1 and lock it in position by means of a clamping nut 3 resting on the vertical surface of the support support 51.
  • the cams 8 In formwork position, the cams 8 are in position. abutment with section B according to abutment portion 22.
  • the rotation R of the inclination rod 7 allows the inclination of the lower part of the support support 51, the upper part of the support support 51 being rotatably mounted relative to the B part thanks to the pivot rod 6.
  • the rotation of the cam 8 allows the tilt rod 7 to be closer to the formwork side of the panel B.
  • the support support 51 can then incline an angle of inclination with respect to the formwork front face AV as shown in FIG. figure 6 , the lower part of the support support 51 moving towards the front formwork AV. Since the guide aperture 52 of the support 51 extends vertically, the inclination of the support 51 has no disadvantage for the spacer rod 1, the sliding guide opening 52 vertically around the spacer rod 1.
  • the tilt rod 7 comprises in this example two cams 8 but it goes without saying that it could include only one or more cams 8.
  • the displacement means are adapted to incline the support support 51 relative to the front panel formwork AV of the B board but it goes without saying that they could also be adapted to move the support support 51 parallel to the front panel formwork AV of the form B.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Moulds, Cores, Or Mandrels (AREA)

Abstract

The panel has a flat shuttering front face (AV) in which a spacer opening (2) is formed, and a back face (AR) on which a guiding device (5) is mounted, where the device guides a spacer rod (1) through the spacer opening. The device comprises a bearing support i.e. support plate (51), adapted to be in contact with a clamping nut (3) locking a position of the rod in the spacer opening. The device comprises a displacement unit for displacing the support plate with respect to the front face of the panel. The displacement unit moves the support plate between locking and release positions. An independent claim is also included for a method for withdrawing a spacer rod mounted between two opposite form panels.

Description

L'invention concerne le domaine des coffrages de construction, et plus particulièrement les banches de coffrage.The invention relates to the field of construction formwork, and more particularly the formwork shuttering.

On connaît un coffrage de construction comprenant une pluralité de banches et dans lequel est coulé un matériau durcisseur tel que du béton.There is known a construction formwork comprising a plurality of panels and in which is poured a hardener material such as concrete.

Une banche comprend conventionnellement une paroi dont une face avant, appelée face coffrante, est destinée à s'étendre intérieurement au coffrage pour venir en contact avec le matériau coulé dans le coffrage. La paroi de la banche comporte une pluralité d'orifices la traversant transversalement dans chacun desquels une entretoise peut être insérée. L'utilisation des telles entretoises permet d'ajuster le parallélisme de faces coffrantes de banches en vis-à-vis afin de s'assurer de l'épaisseur constante du coffrage de construction entre les deux banches. Un dispositif de guidage d'une tige d'entretoise est classiquement fixé à la face arrière de la paroi de la banche en regard de chaque orifice d'entretoise de la banche. Une tige d'entretoise comporte, de manière classique, une extrémité proximale permettant d'être manipulée par un opérateur et une extrémité distale comportant un filetage pour permettre son vissage dans une partie taraudée complémentaire.A panel conventionally comprises a wall, a front face, called formwork face, is intended to extend inside the formwork to come into contact with the material cast in the formwork. The wall of the panel has a plurality of orifices therethrough transversely in each of which a spacer can be inserted. The use of such spacers makes it possible to adjust the parallelism of shuttering faces of panels opposite to ensure the constant thickness of the formwork between the two panels. A device for guiding a spacer rod is conventionally attached to the rear face of the wall of the box facing each spacer hole of the formwork. A spacer rod conventionally comprises a proximal end for manipulation by an operator and a distal end having a thread for allowing its screwing into a complementary threaded portion.

En référence à la figure 1, pour ajuster le parallélisme entre une première face coffrante AV1 d'une première banche B1 et une deuxième face coffrante AV2 d'une deuxième banche B2, un opérateur saisit une tige d'entretoise par son extrémité proximale 11 et introduit son extrémité distale 12 dans un premier dispositif de guidage 4 de la première banche B1 de manière à ce que la tige d'entretoise 1 pénètre dans un premier orifice d'entretoise 2 de la première banche B1 sensiblement perpendiculairement à la première face coffrante AV1. L'opérateur introduit ensuite l'extrémité distale 12 de la tige d'entretoise 1 dans un orifice d'entretoise 2 de la deuxième banche B2 afin qu'elle soit reçue et verrouillée dans le deuxième dispositif de guidage 4 de la deuxième banche B2. La tige d'entretoise 1 est serrée à ses deux extrémités 11, 12 par des écrous de serrage 3 dans les dispositifs de guidage 4 de manière à ce que les faces coffrantes AV1, AV2 soient écartées de la distance désirée d comme représenté sur la figure 1. En pratique, chaque dispositif de guidage 4 comporte une plaque d'appui 41 parallèle à la face avant coffrante AV1, AV2 sur laquelle l'écrou de serrage 3 vient s'appuyer. En position verrouillée, la tige d'entretoise 1 maintient les faces coffrantes AV1, AV2 parallèles entre elles comme représenté sur la figure 1.With reference to the figure 1 , to adjust the parallelism between a first formwork side AV1 of a first formwork B1 and a second formwork face AV2 of a second formwork B2, an operator grasps a spacer rod by its proximal end 11 and introduces its distal end 12 into a first guiding device 4 of the first panel B1 so that the spacer rod 1 enters a first spacer hole 2 of the first panel B1 substantially perpendicular to the first form face AV1. The operator then introduces the distal end 12 of the spacer rod 1 into a spacer hole 2 of the second panel B2 so that it is received and locked in the second guide device 4 of the second panel B2. The spacer rod 1 is clamped at its two ends 11, 12 by clamping nuts 3 in the guide devices 4 so that the form faces AV1, AV2 are spaced apart by the desired distance d as shown in FIG. figure 1 . In practice, each guiding device 4 comprises a support plate 41 parallel to the formwork front face AV1, AV2 on which the clamping nut 3 comes to rest. In position locked, the spacer rod 1 keeps the form faces AV1, AV2 parallel to each other as shown in FIG. figure 1 .

Lorsque du béton à l'état pâteux est introduit dans le coffrage (coulage du béton), le béton exerce des forces de poussée F sur les faces coffrantes AV1, AV2 qui tendent à écarter les banches B1, B2 l'une de l'autre comme illustré sur la figure 2. Les tiges d'entretoise 1 permettent de maintenir immobiles les faces coffrantes AV1, AV2 en absorbant la poussée du béton F. Du fait de la poussée de béton F, une tension mécanique se créée pour chaque banche B1, B2 entre l'écrou de serrage 3, la tige d'entretoise 1 et le dispositif de guidage 4. Après séchage et durcissement du béton, le béton n'exerce plus de poussée F sur les faces coffrantes AV1, AV2 des banches B1, B2. Néanmoins, la tension mécanique entre l'écrou de serrage 3, la tige d'entretoise 1 et le dispositif de guidage 4 demeure et il est difficile pour un opérateur de retirer la tige d'entretoise 1 reliant les première et deuxième banches B1, B2.When concrete in the pasty state is introduced into the formwork (concrete pouring), the concrete exerts thrust forces F on the formwork faces AV1, AV2 which tend to separate the banners B1, B2 from each other as illustrated on the figure 2 . The spacer rods 1 make it possible to keep the shuttering faces AV1, AV2 immobile by absorbing the thrust of the concrete F. Due to the thrust of the concrete F, a mechanical tension is created for each shutter B1, B2 between the tightening nut. 3, the spacer rod 1 and the guiding device 4. After drying and hardening of the concrete, the concrete no longer exerts thrust F on the formwork panels AV1, AV2 of the panels B1, B2. Nevertheless, the mechanical tension between the clamping nut 3, the spacer rod 1 and the guiding device 4 remains and it is difficult for an operator to remove the spacer rod 1 connecting the first and second panels B1, B2. .

Pour retirer une tige d'entretoise 1, un opérateur utilise de manière classique une clé pour appliquer un couple de desserrage à l'écrou de serrage 3 depuis la face arrière AR1 de la première banche B1. Du fait de la tension mécanique, l'écrou de serrage 3 est fermement verrouillé et l'opérateur est contraint de forcer pour appliquer un couple de desserrage suffisant. Lorsque l'opérateur ne peut pas desserrer l'écrou de serrage 3, il est contraint d'ajouter un accessoire pour rallonger sa clé et ainsi allonger le bras de levier de la clé de manière à appliquer un couple de desserrage plus important. Cette mise en oeuvre est particulièrement contraignante car elle impose à l'opérateur de disposer d'un tel tube de rallonge. En outre, la durée de retrait d'une tige d'entretoise 1 est augmentée ce qui est préjudiciable. Dans des cas extrêmes, lorsque l'utilisation d'un accessoire de rallonge ne permet pas de desserrer l'écrou de serrage 3, l'opérateur est contraint de sectionner l'écrou de serrage 3 afin de retirer la tige d'entretoise 11 et ainsi libérer les banches B1, B2.To remove a spacer rod 1, an operator conventionally uses a key to apply a loosening torque to the clamping nut 3 from the rear face AR1 of the first panel B1. Due to the mechanical tension, the clamping nut 3 is firmly locked and the operator is forced to force to apply a sufficient loosening torque. When the operator can not loosen the clamping nut 3, he is forced to add an accessory to lengthen his key and thus lengthen the lever arm of the key so as to apply a greater loosening torque. This implementation is particularly restrictive because it requires the operator to have such an extension tube. In addition, the withdrawal time of a spacer rod 1 is increased which is detrimental. In extreme cases, when the use of an extension attachment does not make it possible to loosen the clamping nut 3, the operator is forced to cut the clamping nut 3 in order to remove the spacer rod 11 and thus release the B1, B2 banches.

La présente invention vise à éliminer au moins certains de ces inconvénients pour améliorer le retrait d'une tige d'entretoise reliant deux banches de coffrage après utilisation.The present invention aims to eliminate at least some of these disadvantages to improve the removal of a spacer rod connecting two shuttering formwork after use.

A cet effet, l'invention concerne une banche de coffrage comportant une face avant coffrante dans laquelle est formé au moins un orifice d'entretoise et une face arrière sur laquelle est monté un dispositif de guidage d'une tige d'entretoise à travers ledit orifice d'entretoise, ledit dispositif de guidage comportant un support d'appui adapté pour être en contact avec un écrou de serrage verrouillant la position de la tige d'entretoise dans ledit orifice d'entretoise, le dispositif de guidage comportant des moyens de déplacement du support d'appui par rapport à la face avant coffrante de la banche.For this purpose, the invention relates to a shuttering panel comprising a formwork front face in which is formed at least one spacer hole and a rear face on which is mounted a device for guiding a spacer rod through said orifice spacer, said guide device comprising a support support adapted to be in contact with a clamping nut locking the position of the spacer rod in said spacer hole, the guide device comprising means for moving the spacer; support support with respect to the formwork front face of the formwork.

Grâce aux moyens de déplacement, on peut libérer la tension de serrage du support d'appui ce qui facilite le desserrage de l'écrou de serrage et donc le retrait de la tige d'entretoise.Thanks to the displacement means, it is possible to release the tightening tension of the support support, which facilitates the loosening of the clamping nut and thus the removal of the spacer rod.

De préférence, les moyens de déplacement sont agencés pour déplacer le support d'appui entre :

  • une première position de verrouillage dans laquelle le support d'appui s'étend parallèlement à la face avant coffrante de la banche et à une distance de verrouillage prédéterminée de la face coffrante avant et
  • une deuxième position de libération dans laquelle le support d'appui s'étend au moins partiellement à une distance de libération inférieure à ladite distance de verrouillage.
Preferably, the displacement means are arranged to move the support support between:
  • a first locking position in which the support support extends parallel to the formwork front face of the formwork and at a predetermined locking distance from the front formwork face and
  • a second release position in which the support support extends at least partially at a release distance less than said locking distance.

En rapprochant le support d'appui de la face avant coffrante, on écarte le support d'appui de l'écrou de serrage ce qui permet de diminuer la tension mécanique entre l'écrou et le support d'appui.By bringing the support support closer to the formwork front face, the support support is moved away from the clamping nut, which makes it possible to reduce the mechanical tension between the nut and the support support.

Selon un aspect de l'invention, les moyens de déplacement sont adaptés pour incliner le support d'appui par rapport à la face avant coffrante de la banche.According to one aspect of the invention, the displacement means are adapted to incline the support support relative to the formwork front face of the formwork.

Seule une partie du support d'appui est mobile ce qui facilite la conception du dispositif de guidage et allonge sa durée de vie.Only a portion of the support support is movable which facilitates the design of the guide device and extends its life.

Selon un autre aspect de l'invention, les moyens de déplacement sont adaptés pour déplacer le support d'appui parallèlement à la face avant coffrante de la banche.According to another aspect of the invention, the displacement means are adapted to move the support support parallel to the formwork front face of the formwork.

De manière préférée, le support d'appui se présente sous la forme d'une plaque plane et permet avantageusement un contact plan avec l'écrou de serrage ce qui sécurise son serrage.Preferably, the support support is in the form of a flat plate and advantageously allows a plane contact with the clamping nut which secures its clamping.

De préférence, le support d'appui comporte un orifice de guidage d'une tige d'entretoise afin de guider précisément la tige d'entretoise. De manière préférée, l'orifice de guidage se présente sous la forme d'une rainure, de préférence verticale, pour permettre l'inclinaison du support d'appui tout en guidant la tige d'entretoise.Preferably, the support support comprises a guide orifice of a spacer rod in order to precisely guide the spacer rod. Preferably, the guide orifice is in the form of a groove, preferably vertical, to allow the inclination of the support support while guiding the spacer rod.

De préférence encore, les moyens de déplacement comportent une tige de pivot adaptée pour faire pivoter le support d'appui par rapport à la face avant coffrante. Un dispositif de guidage avec une tige de pivot est robuste ce qui améliore sa durée de vie.More preferably, the displacement means comprise a pivot rod adapted to rotate the support support relative to the formwork front face. A guide device with a pivot rod is robust which improves its service life.

De préférence toujours, les moyens de déplacement comportent une tige d'inclinaison montée rotative par rapport au support d'appui, la tige d'inclinaison comportant au moins une came dont la surface circonférentielle est agencée pour venir en appui sur une partie de butée de la banche. De manière avantageuse, on commande le déplacement du support d'appui (inclinaison, translation, etc.) en modifiant de manière aisée et pratique la position angulaire de la tige d'inclinaison.Preferably still, the displacement means comprise an inclination rod rotatably mounted relative to the bearing support, the inclination rod comprising at least one cam whose circumferential surface is arranged to bear against a stop portion of the banche. Advantageously, the displacement of the support support (inclination, translation, etc.) is controlled by modifying the angular position of the inclination rod in an easy and practical manner.

L'invention concerne en outre un procédé de retrait d'une tige d'entretoise montée entre deux banches de coffrage en vis-à-vis, au moins une des banches comportant un orifice d'entretoise et un dispositif de guidage dans lequel est montée la tige d'entretoise à travers ledit orifice d'entretoise, ledit dispositif de guidage comportant un support d'appui sur lequel est serré un écrou de serrage verrouillant la position de la tige d'entretoise dans ledit orifice d'entretoise, procédé dans lequel on déplace le support d'appui par rapport à la face avant coffrante de la banche de manière à ce que le support d'appui soit écarté de l'écrou de serrage et on retire la tige d'entretoise. De manière avantageuse, la tension mécanique relative au support d'appui est libérée préalablement au retrait de la tige d'entretoise ce qui accélère le retrait et limite la fatigue physique de l'opérateur.The invention further relates to a method of removing a spacer rod mounted between two shuttering boxes opposite, at least one of the panels having a spacer hole and a guiding device in which is mounted the spacer rod through said spacer port, said guide device having a bearing support on which is tightened a clamping nut locking the position of the spacer rod in said spacer hole, wherein the support support is moved relative to the formwork front face of the formwork so that the support support is spaced from the clamping nut and the spacer rod is removed. Advantageously, the mechanical tension relative to the support support is released prior to removal of the spacer rod which accelerates the withdrawal and limits the physical fatigue of the operator.

De manière préférée, on incline le support d'appui par rapport à la face avant coffrante de la banche de manière à ce que le support d'appui soit écarté de l'écrou de serrage.Preferably, the support support is inclined relative to the formwork front face of the formwork so that the support support is spaced from the clamping nut.

Les caractéristiques et avantages de la présente invention apparaîtront plus clairement à la lecture de la description suivante d'une forme de réalisation de l'invention, donnée à titre d'exemple non limitatif, en référence aux dessins annexés correspondants dans lesquels :

  • la figure 1 est une vue en coupe schématique de deux banches de coffrage en vis-à-vis au cours de leur utilisation (déjà commentée) ;
  • la figure 2 est une vue en coupe schématique rapprochée du verrouillage d'une tige d'entretoise montée dans une des banches de la figure 1 (déjà commentée) ;
  • la figure 3 est une vue en coupe schématique d'une banche de coffrage selon l'invention ;
  • la figure 4 est une vue en perspective du dispositif de guidage d'une tige d'entretoise de la banche de la figure 3 ;
  • la figure 5 est une vue en coupe rapprochée du dispositif de guidage d'une tige d'entretoise de la banche de la figure 3 ;
  • la figure 6 est une vue en coupe rapprochée du mécanisme du dispositif de guidage de la figure 5 ;
  • la figure 7A est une première vue en perspective du dispositif de guidage d'une tige d'entretoise pour une banche de coffrage ;
  • la figure 7B est une deuxième vue en perspective du dispositif de guidage d'une tige d'entretoise pour une banche de coffrage ;
  • la figure 7C est une troisième vue en perspective du dispositif de guidage d'une tige d'entretoise pour une banche de coffrage ; et
  • la figure 7D est une quatrième vue en perspective du dispositif de guidage d'une tige d'entretoise pour une banche de coffrage.
The features and advantages of the present invention will emerge more clearly on reading the following description of an embodiment of the invention, given by way of non-limiting example, with reference to the corresponding appended drawings in which:
  • the figure 1 is a schematic sectional view of two shuttering formwork vis-à-vis during their use (already commented);
  • the figure 2 is a close schematic sectional view of the locking of a spacer rod mounted in one of the banches of the figure 1 (already commented);
  • the figure 3 is a schematic sectional view of a shuttering formwork according to the invention;
  • the figure 4 is a perspective view of the guide device of a spacer rod of the banche of the figure 3 ;
  • the figure 5 is a close sectional view of the guide device of a spacer rod of the banche of the figure 3 ;
  • the figure 6 is a close sectional view of the mechanism of the guiding device of the figure 5 ;
  • the Figure 7A is a first perspective view of the guide device of a spacer rod for a shuttering formwork;
  • the Figure 7B is a second perspective view of the guide device of a spacer rod for a shuttering formwork;
  • the Figure 7C is a third perspective view of the guide device of a spacer rod for a shuttering formwork; and
  • the Figure 7D is a fourth perspective view of the guide device of a spacer rod for a shuttering formwork.

On a représenté à la figure 3 une banche de coffrage B comprenant une paroi verticale 20, définissant une face avant coffrante AV qui est plane et une face arrière AR opposée à la face avant plane AV. Par paroi 20, on entend une épaisseur de la banche B formée d'un ou plusieurs panneaux, identiques ou différents. La paroi verticale 20 de la banche B est percée, dans cet exemple, de quatre orifices d'entretoise 2 s'étendant perpendiculairement au plan défini par la face coffrante avant AV. Chaque orifice d'entretoise 2 est apte à recevoir une entretoise 1 permettant d'ajuster le parallélisme de faces coffrantes AV des banches B en vis-à-vis afin de s'assurer de l'épaisseur constante du coffrage de construction entre les deux banches B.We have shown figure 3 a formwork shuttering B comprising a vertical wall 20, defining a formwork front face AV which is flat and a rear face AR opposite to the flat front face AV. By wall 20 is meant a thickness of the panel B formed of one or more panels, identical or different. The vertical wall 20 of the wall B is pierced, in this example, four spacer holes 2 extending perpendicularly to the plane defined by the formwork front side AV. Each spacer hole 2 is adapted to receive a spacer 1 for adjusting the parallelism of AV formwork faces of the panels B vis-à-vis to ensure the constant thickness of the formwork between the two panels B.

Dans cet exemple, en référence à la figure 3, l'entretoise 1 se présente sous la forme d'un corps allongé destiné à s'étendre transversalement, en position d'utilisation, à travers les faces coffrantes AV de deux banches B en vis-à-vis. Chaque entretoise 1 comporte une extrémité proximale 11 permettant d'être manipulée par un opérateur et une extrémité distale 12 comportant un filetage pour permettre son vissage dans une partie taraudée complémentaire. En position d'utilisation, un écrou de serrage 3 est vissé à l'extrémité proximale 11 de la tige d'entretoise 1 pour la verrouiller en position.In this example, with reference to the figure 3 , the spacer 1 is in the form of an elongated body intended to extend transversely, in the use position, through the formwork surfaces AV of two panels B vis-à-vis. Each spacer 1 has a proximal end 11 to be manipulated by an operator and a distal end 12 having a thread to allow its screwing into a complementary threaded portion. In the position of use, a clamping nut 3 is screwed to the proximal end 11 of the spacer rod 1 to lock it in position.

En référence aux figures 3 et 4, la banche de coffrage B comporte un dispositif 5 de guidage d'une tige d'entretoise 1 monté sur sa face arrière AR pour permettre le guidage d'une tige d'entretoise 1 dans un orifice d'entretoise 2 de la banche de coffrage B. Dans cet exemple, un logement 21 est formé dans la face arrière AR de la paroi 20 de la banche B pour loger le dispositif de guidage 5 comme représenté sur la figure 4.With reference to Figures 3 and 4 , formwork board B comprises a device 5 for guiding a spacer rod 1 mounted on its rear face AR to allow the guide of a spacer rod 1 in a spacer hole 2 of the formwork board B. In this example, a housing 21 is formed in the rear face AR of the wall 20 of the box B to accommodate the guide device 5 as shown in FIG. figure 4 .

Le dispositif de guidage 5 comporte un support d'appui 51 sur lequel est destiné à s'appuyer l'écrou de serrage 3 lorsque ce dernier est vissé à l'extrémité proximale 11 de la tige d'entretoise 1. Dans cet exemple, en référence à la figure 4, le support d'appui 51 se présente sous la forme d'une plaque d'appui 51 qui est plane et qui s'étend sensiblement verticalement de manière à ce que l'écrou 3 soit en contact plan avec la plaque d'appui 51 lorsque ce dernier est vissé. La plaque d'appui 51 comporte un orifice traversant de guidage 52 dans lequel la tige d'entretoise 1 est destinée à s'étendre en position de serrage. Dans cet exemple, l'orifice traversant de guidage 52 se présente sous la forme d'une rainure sensiblement verticale (Figure 4).The guiding device 5 comprises a support support 51 on which is intended to rest the clamping nut 3 when the latter is screwed to the proximal end 11 of the spacer rod 1. In this example, in reference to the figure 4 the bearing support 51 is in the form of a support plate 51 which is flat and which extends substantially vertically so that the nut 3 is in plane contact with the support plate 51 when the latter is screwed. The support plate 51 has a guide through orifice 52 in which the spacer rod 1 is intended to extend in the clamping position. In this example, the guide through orifice 52 is in the form of a substantially vertical groove ( Figure 4 ).

Pour éliminer au moins certains des inconvénients de l'art antérieur, le dispositif de guidage 5 selon l'invention comporte des moyens de déplacement du support d'appui 51 par rapport à la face avant coffrante AV de la banche B. Grâce à ces moyens de déplacement, on peut écarter le support d'appui 51 de l'écrou de serrage 3, lorsque ce dernier est vissé, pour diminuer de manière importante la tension mécanique dans l'écrou de serrage 3, la tige d'entretoise 1 et le support d'appui 51. En effet, en déplaçant le support d'appui 51, celui-ci n'exerce plus de d'effort mécanique sur l'écrou de serrage 3. On peut alors dévisser l'écrou de serrage 3 et retirer la tige d'entretoise 1 de manière aisée, sans effort excessif.To eliminate at least some of the drawbacks of the prior art, the guiding device 5 according to the invention comprises means for moving the support support 51 relative to the front formwork AV of the panel B. With these means when the latter is screwed in, it is possible to move the support support 51 away from the clamping nut 3, in order to significantly reduce the mechanical tension in the clamping nut 3, the spacer rod 1 and the support support 51. Indeed, by moving the support support 51, it no longer exerts mechanical force on the clamping nut 3. It can then unscrew the clamping nut 3 and remove the spacer rod 1 easily, without excessive effort.

Les moyens de déplacement comportent, dans cet exemple, une tige de pivot 6 adaptée pour permettre l'inclinaison du support d'appui 51 par rapport à la face avant coffrante AV de la banche B. En référence aux figures 4 et 7A-7D, la tige de pivot 6 s'étend horizontalement et est montée dans des lumières de guidage 53 du dispositif de guidage 5 (Figure 7B) et dans des lumières de guidage 23 (Figure 4) du logement 21 de la banche B. Comme représenté sur la figure 5, la tige de pivot 6 forme une liaison pivot entre la partie supérieure du support d'appui 51 et le logement 21 de la banche B pour permettre un déplacement angulaire de la partie inférieure du support d'appui 51. Le support d'appui 51 peut s'incliner par rapport à la face avant coffrante AV de la banche B pour faciliter le desserrage du verrou de serrage 3 comme cela sera présenté par la suite. Dans cet exemple, l'inclinaison du support d'appui 51 entre sa position de verrouillage et sa position de libération est de l'ordre de 5 degrés. Dans cet exemple, en référence aux figures 7A-7D, le dispositif de guidage 5 comporte un socle 50 en forme de U, solidaire du support d'appui 51, qui est monté dans le logement 21 de la banche B. En référence plus particulièrement à la figure 7B, les lumières de guidage 53 du dispositif de guidage 5 sont formées dans les parties latérales du socle 50 du dispositif de guidage 5.The displacement means include, in this example, a pivot rod 6 adapted to allow the inclination of the support support 51 relative to the front formwork AV of the panel B. Referring to figures 4 and 7A-7D , the pivot rod 6 extends horizontally and is mounted in guide holes 53 of the guiding device 5 ( Figure 7B ) and in guide lights 23 ( Figure 4 ) of housing 21 of panel B. As shown in figure 5 , the pivot rod 6 forms a pivot connection between the upper part of the support support 51 and the housing 21 of the B form to allow angular displacement of the lower part of the support support 51. The support support 51 can tilt relative to the front formwork front AV of the B-side to facilitate the loosening the clamping lock 3 as will be presented later. In this example, the inclination of the support 51 between its locking position and its release position is of the order of 5 degrees. In this example, with reference to Figures 7A-7D , the guiding device 5 comprises a base 50 in the shape of a U, integral with the support support 51, which is mounted in the housing 21 of the panel B. With particular reference to the Figure 7B the guide lights 53 of the guiding device 5 are formed in the lateral parts of the base 50 of the guiding device 5.

Pour guider le déplacement du support d'appui 51 et passer d'une position de verrouillage à une position de libération, les moyens de déplacement du dispositif de guidage 5 comportent en outre une tige d'inclinaison 7, montée rotative par rapport au dispositif de guidage 5, sur laquelle sont montées solidairement deux cames 8 dont la surface circonférentielle 81 est agencée pour venir en appui sur une partie de butée 22 de la banche B comme représenté sur la figure 6. De telles cames 8 permettent avantageusement de modifier la distance entre la partie inférieure du support d'appui 51 et la partie de butée 22 de manière à modifier l'inclinaison du support d'appui 51. L'inclinaison du support d'appui 51 est ainsi fonction de la position angulaire de la tige d'inclinaison 7.To guide the movement of the support 51 and move from a locking position to a release position, the displacement means of the guide device 5 further comprises a tilt rod 7, rotatably mounted relative to the device 5, on which are mounted integrally two cams 8 whose circumferential surface 81 is arranged to bear against an abutment portion 22 of the wall B as shown in FIG. figure 6 . Such cams 8 advantageously make it possible to modify the distance between the lower part of the support support 51 and the abutment portion 22 so as to modify the inclination of the support support 51. The inclination of the support support 51 is as a function of the angular position of the inclination rod 7.

Dans cet exemple, en référence à la figure 7D, la tige d'inclinaison 7 s'étend dans un logement horizontal formé dans le dispositif de guidage 5 et comporte, à une de ses extrémités, une tête d'activation qui est, dans cet exemple, de forme hexagonale de manière à pouvoir être tournée au moyen d'une clé. De manière préférée, la forme de la tête d'activation est similaire à la forme de la partie de serrage de l'écrou de serrage 3 de manière à ce que la tige d'inclinaison 7 et l'écrou de serrage 3 puissent être tournés au moyen d'une même clé. Les cames 8 comportent une surface circonférentielle 81 adaptée pour être en contact avec une partie de butée 22 de la banche B de manière à écarter le support d'appui 51 de la paroi 20 en fonction de la position angulaire des cames 8.In this example, with reference to the Figure 7D the inclination rod 7 extends in a horizontal housing formed in the guiding device 5 and comprises, at one of its ends, an activation head which is, in this example, of hexagonal shape so that it can be turned with a key. Preferably, the shape of the activation head is similar to the shape of the clamping portion of the clamping nut 3 so that the inclining rod 7 and the clamping nut 3 can be rotated. by the same key. The cams 8 comprise a circumferential surface 81 adapted to be in contact with an abutment portion 22 of the panel B so as to move the support support 51 away from the wall 20 as a function of the angular position of the cams 8.

L'utilisation du dispositif de guidage 5 d'une banche B selon l'invention va être maintenant présentée. Lors de la mise en place du coffrage, avant que le béton ne soit coulé dans le coffrage, le support d'appui 51 de chaque dispositif de guidage 1 est verrouillé en position verticale de manière à s'étendre parallèlement à la face avant coffrante AV de la banche B. A cet effet, un opérateur règle la position angulaire de la tige d'inclinaison 7 de manière à ce que les cames 8 soient en appui sur la partie de butée 22 de la banche B. Autrement dit, lors de la mise en place du coffrage, le support d'appui 51 s'étend conformément à l'art antérieur. L'opérateur peut alors introduire une tige d'entretoise 1 et la verrouiller en position au moyen d'un écrou de serrage 3 venant en appui sur la surface verticale du support d'appui 51. En position de coffrage, les cames 8 sont en butée avec la banche B selon la partie de butée 22.The use of the guiding device 5 of a panel B according to the invention will now be presented. When placing the formwork, before the concrete is poured into the formwork, the support 51 of each guide device 1 is locked in a vertical position so as to extend parallel to the formwork front face AV of the panel B. For this purpose, an operator adjusts the angular position of the tilt rod 7 so that the cams 8 rest on the abutment portion 22 of the panel B. In other words, during the placing the formwork, the support support 51 extends in accordance with the prior art. The operator can then introduce a spacer rod 1 and lock it in position by means of a clamping nut 3 resting on the vertical surface of the support support 51. In formwork position, the cams 8 are in position. abutment with section B according to abutment portion 22.

Une fois le béton coulé dans le coffrage, la poussée du béton s'exerce de manière similaire à l'art antérieur. Une tension mécanique se créée entre l'écrou de serrage 3, la tige d'entretoise 1 et le dispositif de guidage 5. Après séchage et durcissement du béton, le béton n'exerce plus de poussée sur la face coffrante AV de la banche B. Néanmoins, la tension mécanique entre l'écrou de serrage 3, la tige d'entretoise 1 et le dispositif de guidage 5 demeure. Pour retirer la tige d'entretoise 1, l'opérateur agit sur la tige d'inclinaison 7, de préférence au moyen d'une clé, afin de faire tourner les cames 8 de la tige d'inclinaison 7. Ainsi, lors du décoffrage, les cames 8 ne sont plus en contact avec la partie de butée 22 de la banche B comme représenté sur la figure 6.Once concrete poured into the formwork, the thrust of the concrete is exercised in a manner similar to the prior art. A mechanical tension is created between the clamping nut 3, the spacer rod 1 and the guiding device 5. After drying and hardening of the concrete, the concrete no longer exerts thrust on the formwork side AV of the board B Nevertheless, the mechanical tension between the clamping nut 3, the spacer rod 1 and the guiding device 5 remains. To remove the spacer rod 1, the operator acts on the tilt rod 7, preferably by means of a key, in order to rotate the cams 8 of the tilt rod 7. Thus, during the formwork the cams 8 are no longer in contact with the abutment portion 22 of the panel B as shown in FIG. figure 6 .

En référence à la figure 6, la rotation R de la tige d'inclinaison 7 autorise l'inclinaison de la partie inférieure du support d'appui 51, la partie supérieur du support d'appui 51 étant montée rotative par rapport à la banche B grâce à la tige de pivot 6. De manière avantageuse, la rotation de la came 8 permet à la tige d'inclinaison 7 de se rapprocher de la face coffrante de la banche B.With reference to the figure 6 , the rotation R of the inclination rod 7 allows the inclination of the lower part of the support support 51, the upper part of the support support 51 being rotatably mounted relative to the B part thanks to the pivot rod 6. Advantageously, the rotation of the cam 8 allows the tilt rod 7 to be closer to the formwork side of the panel B.

Le support d'appui 51 peut alors s'incliner d'un angle d'inclinaison a par rapport à la face avant coffrante AV comme représenté sur la figure 6, la partie inférieure du support d'appui 51 se déplaçant vers la face avant coffrante AV. Etant donné que l'ouverture de guidage 52 du support d'appui 51 s'étend verticalement, l'inclinaison du support d'appui 51 ne présente pas d'inconvénient pour la tige d'entretoise 1, l'ouverture de guidage 52 coulissant verticalement autour de la tige d'entretoise 1.The support support 51 can then incline an angle of inclination with respect to the formwork front face AV as shown in FIG. figure 6 , the lower part of the support support 51 moving towards the front formwork AV. Since the guide aperture 52 of the support 51 extends vertically, the inclination of the support 51 has no disadvantage for the spacer rod 1, the sliding guide opening 52 vertically around the spacer rod 1.

Lorsque l'opérateur incline le support d'appui 51 du dispositif de guidage 5, la tension mécanique du support d'appui 51 disparaît. Pour retirer la tige d'entretoise 1, l'opérateur utilise de manière classique une clé pour appliquer un couple de desserrage à l'écrou de serrage 3 depuis la face arrière AR de la banche B. Du fait de la faible tension mécanique, il n'est pas nécessaire à l'opérateur d'appliquer un couple de desserrage important, l'écrou de serrage 3 se desserrant de manière rapide avec peu d'effort.When the operator inclines the support support 51 of the guide device 5, the mechanical tension of the support support 51 disappears. To remove the spacer rod 1, the operator conventionally uses a wrench to apply a loosening torque to the clamping nut 3 from the rear panel AR of the panel B. Due to the low mechanical tension, it is It is not necessary for the operator to apply a large loosening torque, the clamping nut 3 loosening quickly with little effort.

La tige d'inclinaison 7 comporte dans cet exemple deux cames 8 mais il va de soi qu'elle pourrait n'en comprendre qu'une unique ou plus de deux cames 8. Dans l'exemple de réalisation, les moyens de déplacement sont adaptés pour incliner le support d'appui 51 par rapport à la face avant coffrante AV de la banche B mais il va de soi qu'ils pourraient également être adaptés pour déplacer le support d'appui 51 parallèlement à la face avant coffrante AV de la banche B. A cet effet, il suffit de prévoir des glissières pour guider le support d'appui 51, une came 8 pouvant être utilisée pour modifier la course du support d'appui 51.The tilt rod 7 comprises in this example two cams 8 but it goes without saying that it could include only one or more cams 8. In the embodiment, the displacement means are adapted to incline the support support 51 relative to the front panel formwork AV of the B board but it goes without saying that they could also be adapted to move the support support 51 parallel to the front panel formwork AV of the form B. For this purpose, it is sufficient to provide slides for guiding the support support 51, a cam 8 that can be used to modify the stroke of the support support 51.

Claims (10)

Banche de coffrage (B) comportant une face avant coffrante (AV) dans laquelle est formé au moins un orifice d'entretoise (2) et une face arrière (AR) sur laquelle est monté un dispositif (5) de guidage d'une tige d'entretoise (1) à travers ledit orifice d'entretoise (2), ledit dispositif de guidage (5) comportant un support d'appui (51) adapté pour être en contact avec un écrou de serrage (3) verrouillant la position de la tige d'entretoise (1) dans ledit orifice d'entretoise (2), banche caractérisée en ce que le dispositif de guidage (5) comporte des moyens de déplacement du support d'appui (51) par rapport à la face avant coffrante (AV) de la banche (B).Formwork shuttering (B) comprising a formwork front face (AV) in which at least one spacer hole (2) and a rear face (AR) are formed on which is mounted a device (5) for guiding a rod spacer (1) through said spacer hole (2), said guide device (5) having a support (51) adapted to be in contact with a clamping nut (3) locking the position of the spacer rod (1) in said spacer orifice (2), characterized in that the guiding device (5) comprises means for moving the support support (51) relative to the formwork front face (AV) of the box (B). Banche selon la revendication 1, dans laquelle, les moyens de déplacement sont agencés pour déplacer le support d'appui (51) entre : - une première position de verrouillage dans laquelle le support d'appui s'étend parallèlement à la face avant coffrante (AV) de la banche (B) et à une distance de verrouillage prédéterminée de la face coffrante avant et - une deuxième position de libération dans laquelle le support d'appui (51) s'étend au moins partiellement à une distance de libération inférieure à ladite distance de verrouillage. The blank according to claim 1, wherein the displacement means are arranged to move the support support (51) between: a first locking position in which the support support extends parallel to the formwork front face (AV) of the formwork (B) and at a predetermined locking distance from the front formwork face and - A second release position in which the support support (51) extends at least partially at a release distance less than said locking distance. Banche selon l'une des revendications 1 à 2, dans laquelle, les moyens de déplacement sont adaptés pour incliner le support d'appui (51) par rapport à la face avant coffrante (AV) de la banche (B).Banche according to one of claims 1 to 2, wherein, the displacement means are adapted to incline the support support (51) relative to the formwork front face (AV) of the formwork (B). Banche selon l'une des revendications 1 à 3, dans laquelle, les moyens de déplacement sont adaptés pour déplacer le support d'appui (51) parallèlement à la face avant coffrante (AV) de la banche (B).Banche according to one of claims 1 to 3, wherein, the displacement means are adapted to move the support support (51) parallel to the formwork front face (AV) of the formwork (B). Banche selon l'une des revendications 1 à 4, dans laquelle, le support d'appui (51) se présente sous la forme d'une plaque plane.Board according to one of claims 1 to 4, wherein the support support (51) is in the form of a flat plate. Banche selon l'une des revendications 1 à 5, dans laquelle, le support d'appui (51) comporte un orifice de guidage (52) d'une tige d'entretoise (1).Sidewall according to one of claims 1 to 5, wherein the support support (51) comprises a guide orifice (52) of a spacer rod (1). Banche selon l'une des revendications 1 à 6, dans laquelle, les moyens de déplacement comportent une tige de pivot (6) adaptée pour faire pivoter le support d'appui (51) par rapport à la face avant coffrante (AV).Banche according to one of claims 1 to 6, wherein the displacement means comprise a pivot rod (6) adapted to rotate the support support (51) relative to the formwork front face (AV). Banche selon l'une des revendications 1 à 7, dans laquelle, les moyens de déplacement comportent une tige d'inclinaison (7) montée rotative par rapport au support d'appui (51), la tige d'inclinaison (7) comportant au moins une came (8) dont la surface circonférentielle (81) est agencée pour venir en appui sur une partie de butée (22) de la banche (B).Bib according to one of claims 1 to 7, wherein the displacement means comprise a tilt rod (7) rotatably mounted relative to the support support (51), the tilt rod (7) having at minus a cam (8) whose circumferential surface (81) is arranged to bear on an abutment portion (22) of the formwork (B). Procédé de retrait d'une tige d'entretoise (1) montée entre deux banches de coffrage (B) en vis-à-vis, au moins une des banches (B) comportant un orifice d'entretoise (2) et un dispositif de guidage (5) dans lequel est montée la tige d'entretoise (1) à travers ledit orifice d'entretoise (2), ledit dispositif de guidage (5) comportant un support d'appui (51) sur lequel est serré un écrou de serrage (3) verrouillant la position de la tige d'entretoise (1) dans ledit orifice d'entretoise (2), procédé dans lequel : - on déplace le support d'appui (51) par rapport à la face avant coffrante (AV) de la banche (B) de manière à ce que le support d'appui (51) soit écarté de l'écrou de serrage (3) ; et - on retire la tige d'entretoise (1). Method for removing a spacer rod (1) mounted between two shuttering panels (B) facing each other, at least one of the panels (B) having a spacer orifice (2) and a spacer device guide (5) in which the spacer rod (1) is mounted through said spacer hole (2), said guiding device (5) having a support (51) on which is tightened a nut of clamping (3) locking the position of the spacer rod (1) in said spacer hole (2), wherein the support support (51) is moved relative to the formwork front face (AV) of the formwork (B) so that the support support (51) is moved away from the clamping nut (3). ); and - the spacer rod (1) is removed. Procédé selon la revendication 9, dans lequel on incline le support d'appui (51) par rapport à la face avant coffrante (AV) de la banche (B) de manière à ce que le support d'appui (51) soit écarté de l'écrou de serrage (3).A method according to claim 9, wherein the support support (51) is inclined with respect to the formwork front face (AV) of the formwork (B) so that the supporting support (51) is separated from the the tightening nut (3).
EP20120008223 2011-12-16 2012-12-10 Form panel comprising a device for guiding a spacer stem Active EP2604775B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1161743A FR2984385B1 (en) 2011-12-16 2011-12-16 FORMING BANK HAVING A DEVICE FOR GUIDING A SPINDLE ROD

Publications (2)

Publication Number Publication Date
EP2604775A1 true EP2604775A1 (en) 2013-06-19
EP2604775B1 EP2604775B1 (en) 2015-02-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20120008223 Active EP2604775B1 (en) 2011-12-16 2012-12-10 Form panel comprising a device for guiding a spacer stem

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EP (1) EP2604775B1 (en)
FR (1) FR2984385B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3035905A1 (en) * 2015-05-07 2016-11-11 Outinord St Amand BANK AND FORMWORK CONTAINING SUCH A BANK
FR3080132A1 (en) * 2018-04-17 2019-10-18 Sateco FORMING BANK HAVING A DEVICE FOR GUIDING A SPINDLE ROD

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2751358A1 (en) * 1996-07-19 1998-01-23 Outinord St Amand Adjustable spacer for formwork for pouring concrete
EP1854941A2 (en) * 2006-05-10 2007-11-14 Robusta-Gaukel GmbH & Co.KG Clamping device for securing rods of concrete formwork
FR2944329A1 (en) * 2009-04-10 2010-10-15 Sateco Sa Assembly device for spacers of concrete shell molding device, has tapping for screwing nut on threaded rod, bearing supported against washer, and trimming for reduction of frictions interposed between bearing and washer
DE102010003017A1 (en) * 2010-03-18 2011-09-22 Peri Gmbh Anchor nut and method for anchor setting and anchor release

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2751358A1 (en) * 1996-07-19 1998-01-23 Outinord St Amand Adjustable spacer for formwork for pouring concrete
EP1854941A2 (en) * 2006-05-10 2007-11-14 Robusta-Gaukel GmbH & Co.KG Clamping device for securing rods of concrete formwork
FR2944329A1 (en) * 2009-04-10 2010-10-15 Sateco Sa Assembly device for spacers of concrete shell molding device, has tapping for screwing nut on threaded rod, bearing supported against washer, and trimming for reduction of frictions interposed between bearing and washer
DE102010003017A1 (en) * 2010-03-18 2011-09-22 Peri Gmbh Anchor nut and method for anchor setting and anchor release

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3035905A1 (en) * 2015-05-07 2016-11-11 Outinord St Amand BANK AND FORMWORK CONTAINING SUCH A BANK
FR3080132A1 (en) * 2018-04-17 2019-10-18 Sateco FORMING BANK HAVING A DEVICE FOR GUIDING A SPINDLE ROD
GB2574705A (en) * 2018-04-17 2019-12-18 Sateco S A S Formwork panel
GB2574705B (en) * 2018-04-17 2022-05-25 Sateco S A S Formwork panel comprising a strut rod guiding device

Also Published As

Publication number Publication date
FR2984385A1 (en) 2013-06-21
EP2604775B1 (en) 2015-02-11
FR2984385B1 (en) 2014-05-23

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