FR2538832A1 - Improvements to safety devices preventing the tipping of a pair of sheeting boards - Google Patents
Improvements to safety devices preventing the tipping of a pair of sheeting boards Download PDFInfo
- Publication number
- FR2538832A1 FR2538832A1 FR8300295A FR8300295A FR2538832A1 FR 2538832 A1 FR2538832 A1 FR 2538832A1 FR 8300295 A FR8300295 A FR 8300295A FR 8300295 A FR8300295 A FR 8300295A FR 2538832 A1 FR2538832 A1 FR 2538832A1
- Authority
- FR
- France
- Prior art keywords
- connecting rods
- formwork
- articulated
- safety device
- forms
- 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
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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
- E04G19/00—Auxiliary treatment of forms, e.g. dismantling; Cleaning devices
- E04G19/003—Arrangements for stabilising the forms or for moving the forms from one place to another
Abstract
Description
Dondaine technique
La présente invention concerne des perfectionnements aux dispositifs de sécuritet évitant le basculement d'une paire de banches avec leurs accessoires, ledit dispositif étant constitué par au moins un élément rigide reliant les parties supérieures des banches et étant constitué de deux montants fixés verticalement sur chaque face arrière de la banche (celle opposée à la faco coffrante), ou sur la partie supé- rieure de la banche, des bielles étant articulées è la partie supérieure de chaque montant et le levage des banches étant assuré par des élinrues sollicitées par des palonniers écar- teurs ayant tendance à écarter les banches.Technical Dondaine
The present invention relates to improvements to safety devices preventing the tilting of a pair of forms with their accessories, said device being constituted by at least one rigid element connecting the upper parts of the forms and consisting of two uprights fixed vertically on each face. rear of the formwork (the one opposite to the formwork facade), or on the upper part of the formwork, connecting rods being articulated at the upper part of each upright and the lifting of the formwork being ensured by elinrues solicited by spreader beams - guardians who tend to spread the forms.
Problème posé.Problem.
Les banches métalliques sont largement utilisées dans le hdtiment depuis les années cinquante mais elles ont le double Inconvénient de présenter une forte prise au vent et d'avoir leur centre de gravité très près de leur face coffrante. Metal formwork has been widely used in the building since the 1950s, but it has the double disadvantage of having a strong wind resistance and having its center of gravity very close to its shuttering face.
De la sorte une rafale de vent, une fausse manoeuvre ou un choc sur des banches renversent celles-ci très facilement. Comme elles ont un poids qui avoisine et dépasse souvent la tonne leur chute se tr-aduit parfois par un accident corporel et il faut signaler que sur les chantiers français, on a dénombré près de mille morts d'homme è cause desdites banches depuis une vingtaine d'années.In this way a gust of wind, a false maneuver or a shock on beams overturn them very easily. As they have a weight which is close to and often exceeds a tonne, their fall is sometimes caused by a personal accident and it should be noted that on French construction sites, there have been nearly one thousand human deaths due to said formwork for about twenty years.
I1 est important de sionaler que, pour constituer un mur, les banches sont utilisées par paires cn présentant leurs faces coffrantes face b face et parallèles l'une à l'autre. It is important to note that, to constitute a wall, the forms are used in pairs cn having their form faces face b face and parallel to each other.
On les manutentionne cono habituellement par paire avec une grue et des élingues.They are usually handled cono in pairs with a crane and slings.
E tat de la technique antérieure et inconvénients. State of the prior art and drawbacks.
La demanderesse s'est déjà depuis longtemps penchée sur ce grave problème et on pourra se reporter - au brevet 2 133 220 du b Avril 1971 - au brevet 2 136 39E du ll Avril 1972 - au brevet 79-31 74 du 19 Décembre 1979
On pourra se reporter à ce dernier document qui a développé un paragraphe important sur l'état de la technique
-Cependant, le dispositif du brevet 79 31 874 comporte un système de verrouillage qu'il est nécessaire de manoeuvrer
En outre, lorsque le dispositif est déverrouillé, l'ensemble est désarticulé et, sous l'effet d'une rafale de vent, une banche peut-s'incliner, puis l'autre et provoquer un nouveau risque de renversement.The plaintiff has already looked into this serious problem for a long time and reference may be made to patent 2 133,220 of b April 1971 - to patent 2 136 39E of ll April 1972 - to patent 79-31 74 of December 19, 1979
We can refer to this last document which developed an important paragraph on the state of the art
-However, the device of patent 79 31 874 includes a locking system which it is necessary to operate
In addition, when the device is unlocked, the assembly is dislocated and, under the effect of a gust of wind, one form can tilt, then the other and cause a new risk of overturning.
La présente invention est destinée à remédier à ces inconvénients. The present invention is intended to remedy these drawbacks.
Exposé de l'invention.Statement of the invention.
L'invention est caractérisée principalement par le fait que l'on prévoit en haut de chaque montant deux bielles articulées à une certaine distance l'une de l'autre et articulées elles mêmes à un bloc central de manière à constituer deux parallèlogrammes déformables, à raison d'un de part et d'autre du bloc central, la déformation de ces parallélogrammes se réalisant entre deux limites extrêmes lorsque les banches sont manutentionné es par un moyen de levage. The invention is mainly characterized by the fact that there are provided at the top of each upright two connecting rods articulated at a certain distance from each other and articulated themselves to a central block so as to constitute two deformable parallelograms, with due to one on either side of the central block, the deformation of these parallelograms taking place between two extreme limits when the forms are handled by a lifting means.
Suivant une forme préférée de réalisation, le bloc central est constitué de deux platines reliées par des entretoises et quatre axes sur lesquels s'articulent les bielles. According to a preferred embodiment, the central block consists of two plates connected by spacers and four axes on which the connecting rods are articulated.
On a trouvé avantageux oe donner à la partie supérieure des montants une section horizontale en Li avec les ailes tournées vers le bloc central, de manière que les bielles vien nent s'articuler à 1 'intérieur des ailes cn t. It has been found advantageous to give the upper part of the uprights a horizontal section in Li with the wings facing the central block, so that the connecting rods come to articulate inside the wings cn t.
Les limites de déformation du parallélogramme sont définies par des- butées, dont la position est déterminée avec précision de manière à obtenir un écartement maximum des banches, perrrettant l'accès confortable entre elles, et un écar- tement minimum des mêmes banches tel qu'il évite le contact entre les faces coffrantes. The limits of deformation of the parallelogram are defined by stops, the position of which is determined with precision so as to obtain a maximum spacing of the formwork, allowing comfortable access between them, and a minimum spacing of the same formwork as it avoids contact between the shuttering faces.
On pourrait prévoir des parallèlogrammes déformables avec des côtés de longueur différente. Cependant, il est plus logique de prévoir que toutes les bielles aient la même lonqueur. Deformable parallelograms could be provided with sides of different length. However, it makes more sense to provide that all the connecting rods have the same length.
Solution au problème, avantaqes et résultats industriels.Solution to the problem, advantages and industrial results.
Grâce au système à parallèlogrammes, les deux banches restent toujours parallèles à elles-mêmes et, si les butées sont bien disposées, on peut éviter tout contact des faces coffrantes. En outre, le fonctionnement est entièrement automatique, notartent il n'existe pas de verrouillage ou déverrouillage et toute intervention humaine est évitée. Thanks to the parallelogram system, the two forms always remain parallel to themselves and, if the stops are well arranged, contact with the formwork faces can be avoided. In addition, the operation is fully automatic, notartent there is no locking or unlocking and any human intervention is avoided.
On comprend que le système reste rigide en cours de manutention comme au repos et que son assise au sol est confor- table si tien qu'il nc risque pratiouement plus de culbuter, r.'me sous l'effet d'un vent fraichissant. It will be understood that the system remains rigid during handling as at rest and that its seat on the ground is so comfortable that it is practically more likely to tumble, even under the effect of a fresh wind.
L'invention sera vieux comprise à l'aide de la description suivante qui en domme un exemple non limitatif de réalisation pratique ct oui est il lustré par les dessins joints. The invention will be understood with the aid of the following description which dominates a nonlimiting example of practical implementation and yes it is illustrated by the accompanying drawings.
Brève d-escription des figures
Dans ces dessins,
la figure I et une vue de profil du dispositif de l'invention dans ln pasition où les coffrages reposent sur le sol avec les banches @cartées. Brief description of the figures
In these drawings,
Figure I and a side view of the device of the invention in ln pasition where the formwork rests on the ground with the formwork.
La ficur e 2 csst une vue de dessus partielle de la ficure 1. Figure 2 is a partial top view of Figure 1.
La figure 3 est une vue en perspective de l'ensemble du dispositif appliqué à deux banches soulevées par un palonnier. Figure 3 is a perspective view of the entire device applied to two formwork raised by a lifting beam.
La figure 4 est une vue de profil du dispositif lorsque les banches sont rapprochées l'une de l'autre. Figure 4 is a side view of the device when the forms are close to each other.
Description d'un ode de réalisation.Description of an embodiment.
Le dispositif de l'invention s'adapte aux banches (1) et (2) qui sont parallèles et tournent l'une vers l'autre leur face coffrante afin de couler un mur. I1 est constitué par deux montants (3) et (4) qui se fixent verticalement sur la face arrière des banches (1) et (2). En haut de chaque montant (3) et (4) sont prévues, des bielles (5, 6, 7, 8) articulées à une certaine distance l'une de l'autre en (9, 10,- 11, 12) sur les montants (3) et (4) et en (13, 14, 15, 16) sur un bloc central (17) de manière à constituer deux parallèlogrammes déformables. The device of the invention adapts to the formwork (1) and (2) which are parallel and turn their shutter face towards each other in order to pour a wall. I1 consists of two uprights (3) and (4) which are fixed vertically on the rear face of the forms (1) and (2). At the top of each upright (3) and (4) are provided, connecting rods (5, 6, 7, 8) articulated at a certain distance from one another in (9, 10, - 11, 12) on the uprights (3) and (4) and at (13, 14, 15, 16) on a central block (17) so as to constitute two deformable parallelograms.
Les parallèlo@rammes constitués par les bielles (5, 6, 7, 8) les montants (3, 4) et le bloc (17) à a déformation limitée à l'écartement des montants (3) et (4), par les butées (18) et (19) et, à l'écartement minimum des montants (3) et (4) par le fait que les bielles (5) et (6) d'une part et (7) et (8) d'autre part viennent s'appliquer l'une contre l'autre (figure 4). The parallel @ rammes constituted by the connecting rods (5, 6, 7, 8) the uprights (3, 4) and the block (17) with a deformation limited to the spacing of the uprights (3) and (4), by the stops (18) and (19) and, at the minimum spacing of the uprights (3) and (4) by the fact that the connecting rods (5) and (6) on the one hand and (7) and (8) d on the other hand are applied one against the other (Figure 4).
Le bloc central (17) pourrait être moulé. On a repré senté une construction par mécanosoudure où il est formé de deux platines (20) et (21) reliées par des entretoises (non représentées), et les quatre axes (13, 14, 15, 16) sur lesquels s'articulent les bielles (5, 6, 7, @). Le levage de l'ensemble s'effectue par la @rue de chantier dont le crochet s'accroche à l'anneau (25) relié aux attaches (26, 27) du haut des banches (1) et (2) Far les élingues (2E, 29, 3C, 31) qui sont maintenues écartées par des palonniers (32 33). The central block (17) could be molded. We have represented a construction by mechanic welding where it is formed by two plates (20) and (21) connected by spacers (not shown), and the four axes (13, 14, 15, 16) on which the connecting rods (5, 6, 7, @). The assembly is lifted by the @rue de construction site, the hook of which hangs on the ring (25) connected to the fasteners (26, 27) at the top of the formwork (1) and (2) Far the slings (2E, 29, 3C, 31) which are kept apart by lifting beams (32 33).
On remarque que les montants (3) et (4) ont, à leur partie supérieure au moins une section horizontale en U (figure 2) de manière que les bielles telles que (5) viennent s'articuler à l'intérieur des ailes en U. Note that the uprights (3) and (4) have at their upper part at least one horizontal U-shaped section (Figure 2) so that the connecting rods such as (5) are articulated inside the wings in U.
Pour des cas particuliers, on pourrait prévoir des bielles (7) et (8) d'une longueur différente des bielles (5) et (6), on aurait donc des parallélogrammes différents. Cependant, généralement, toutes les bielles (5, 6, 7, 8) ont la même longueur. For special cases, we could provide connecting rods (7) and (8) of a different length from the connecting rods (5) and (6), so we would have different parallelograms. However, generally, all the connecting rods (5, 6, 7, 8) have the same length.
Fonctionnement
Lorsque l'on pose le dispositif de l'invention (figure 1) et (figure 3) qui est suspendu à la grue de chantier par anneau (25) relié aux attaches (26) et (27) du haut des banches (1) et (2) par les élingues (28; 29, 30, 31), l'écartement des banches (1) et (2) est assuré par les palonniers (32) et (33). Le bas des banches (1) et (2) commence à s'appuyer sur le sol (22). L'écartement des banches est au m-aximum, étant assuré par la loncueur des palonnier (32) et (33) dès que l'on soulève le colis à la crue.Operation
When installing the device of the invention (Figure 1) and (Figure 3) which is suspended from the site crane by ring (25) connected to the fasteners (26) and (27) from the top of the formwork (1) and (2) by the slings (28; 29, 30, 31), the spacing of the formwork (1) and (2) is ensured by the lifting beams (32) and (33). The bottom of the formwork (1) and (2) begins to rest on the ground (22). The spacing of the formwork is at m-aximum, being ensured by the length of the lifter (32) and (33) as soon as the package is lifted in flood.
fln voit donc que l'écartement des hanches (1) et (2) est essentiellement fonction de la longueur des palonniers (31) et (32) et des bielles (5, 6, 7, e). fln therefore sees that the spacing of the hips (1) and (2) is essentially a function of the length of the spreaders (31) and (32) and of the connecting rods (5, 6, 7, e).
Naturellement le mouvement de déformation des parallèlogrammes est limité, à l'écertement des banches, par les bu tées (1c) et (19). I] est limité au rapprochement des banches, soit par des butées similaires, soit, comme cela est représen- té, par la simple application des bielles (5) et (6) l'une sur l'autre et des bielles (7; E) l'une sur l'autre. Naturally, the deformation movement of the parallelograms is limited, to the overlapping of the formwork, by the stops (1c) and (19). I] is limited to bringing the formwork together, either by similar stops, or, as shown, by the simple application of the connecting rods (5) and (6) one on the other and of the connecting rods (7; E) one over the other.
On réalise parfaitement que la conception des appareils est prévue pour éviter tout contact des banches (1) et (2) l'une sur l'autre. Elle est conçue aussi pour que, au moment où les banches (1) et (2) reposent sur le sol (22) (figure 1) l'écartement des ban oie s permet d'effectuer confortablement les travaux nécessaires entre celles-ci. Ces travaux consistent par exemple, à prévoir des coffrages de réservation de baies, de placer des fers à béton etc. It is perfectly realized that the design of the devices is designed to avoid any contact of the formwork (1) and (2) on each other. It is also designed so that, when the formwork (1) and (2) rest on the ground (22) (Figure 1) the spacing of the banners allows comfortable work to be carried out between them. This work consists, for example, in providing formwork for reserving bays, placing concrete irons, etc.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8300295A FR2538832A1 (en) | 1983-01-05 | 1983-01-05 | Improvements to safety devices preventing the tipping of a pair of sheeting boards |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8300295A FR2538832A1 (en) | 1983-01-05 | 1983-01-05 | Improvements to safety devices preventing the tipping of a pair of sheeting boards |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2538832A1 true FR2538832A1 (en) | 1984-07-06 |
| FR2538832B1 FR2538832B1 (en) | 1985-05-10 |
Family
ID=9284812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8300295A Granted FR2538832A1 (en) | 1983-01-05 | 1983-01-05 | Improvements to safety devices preventing the tipping of a pair of sheeting boards |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2538832A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2605036A1 (en) * | 1986-10-13 | 1988-04-15 | Comefra Sarl | Safety device preventing a pair of formwork panels from tilting |
| FR2618829A1 (en) * | 1987-07-27 | 1989-02-03 | Outinord St Amand | Improvement for safety devices preventing a pair of shutters from tilting |
| FR2711707A1 (en) * | 1993-10-27 | 1995-05-05 | Outinord St Amand | Scissor stay stabilised shuttering panel for manufacturing a concrete shell |
| FR2718778A1 (en) * | 1994-04-14 | 1995-10-20 | Bouygues Sa | Stabilising compass for concrete coffering |
| FR3031736A1 (en) * | 2015-01-15 | 2016-07-22 | Outinord St Amand | SINGING DEVICE FOR BANK OR PORCING STITCH |
| FR3035132A1 (en) * | 2015-04-15 | 2016-10-21 | Outinord St Amand | FORMING POROUS AND FORMWORK PROVIDED WITH SUCH A PORTIC |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR703074A (en) * | 1930-10-01 | 1931-04-23 | Blaw Knox Cie Fse | Deformable internal metal formwork |
| FR2110485A5 (en) * | 1970-10-19 | 1972-06-02 | Henton Jesse | |
| FR2472068A1 (en) * | 1979-12-19 | 1981-06-26 | Outinord St Amand | Shutters for moulding concrete - are prevented from falling over using jointed arms which lock into position |
-
1983
- 1983-01-05 FR FR8300295A patent/FR2538832A1/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR703074A (en) * | 1930-10-01 | 1931-04-23 | Blaw Knox Cie Fse | Deformable internal metal formwork |
| FR2110485A5 (en) * | 1970-10-19 | 1972-06-02 | Henton Jesse | |
| FR2472068A1 (en) * | 1979-12-19 | 1981-06-26 | Outinord St Amand | Shutters for moulding concrete - are prevented from falling over using jointed arms which lock into position |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2605036A1 (en) * | 1986-10-13 | 1988-04-15 | Comefra Sarl | Safety device preventing a pair of formwork panels from tilting |
| FR2618829A1 (en) * | 1987-07-27 | 1989-02-03 | Outinord St Amand | Improvement for safety devices preventing a pair of shutters from tilting |
| FR2711707A1 (en) * | 1993-10-27 | 1995-05-05 | Outinord St Amand | Scissor stay stabilised shuttering panel for manufacturing a concrete shell |
| FR2718778A1 (en) * | 1994-04-14 | 1995-10-20 | Bouygues Sa | Stabilising compass for concrete coffering |
| FR3031736A1 (en) * | 2015-01-15 | 2016-07-22 | Outinord St Amand | SINGING DEVICE FOR BANK OR PORCING STITCH |
| FR3035132A1 (en) * | 2015-04-15 | 2016-10-21 | Outinord St Amand | FORMING POROUS AND FORMWORK PROVIDED WITH SUCH A PORTIC |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2538832B1 (en) | 1985-05-10 |
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|---|---|---|---|
| ST | Notification of lapse |