FR2529600A1

FR2529600A1 - Simultaneous method for forming/assembling and lifting of corrugated sheets made from thin sheet metal.

Info

Publication number: FR2529600A1
Application number: FR8210570A
Authority: FR
Original assignee: Individual
Current assignee: Individual
Priority date: 1982-06-17
Filing date: 1982-06-17
Publication date: 1984-01-06

Abstract

Device for lifting/forming and assembling corrugated sheets made from thin sheet metal, comprising the use of vertical pillars disposed along the gable walls of the building to be covered (roofed) and supporting the corrugated sheets placed in the vertical position for lifting. A second cable 13 enables the upper corrugated sheet to be disconnected from the lifting cable 5 and for it to be tilted over in order to bring it into a horizontal position and to slide it over the bearing elements as the assembly advances. The manufacturing site, comprising two longitudinal rails, is located at the lower portion of the pillar. The metal sheet penetrates into one of them whereas it projects beyond, in an overhanging manner, the other profiled element. By lowering the combination of corrugated sheets, during assembly, over this overhang the metal sheet laid over the profiled elements and the next metal sheet are caused to be bent.

Description

Dans un premier brevet depose le 15/1/68 nous avons deflni unwe methode de levage d'elements prefabriques en utilisant des cables et des poulies de renvoi fixees sur le batiment
Dans notre brevet du 2/7/81 nous avons de fini un procede different consistant a faire glisser les elements fabriques au sol sur un rai: prenant appui sur le batiment une bielle articulee permettant d'ame les toles en position d'assemblage au sol
Dans l'addition du 1/12/81 le rail a ete remplace par une etoile dont l'ecartement des branches correspondair a la largueur des elements qui prenaient appui sur elle le present brevet definit des dispositions notablement differentes caracterisees en particulier par la suppression de toute liaison du systeme de levage avec le batiment, par le formage automatique de l'onde sans intervention ni de bielles ni d 'intervention d'ouvrit et enfin par le positionnement automatique des toles pour façonner le joint
C e nouveau procede consiste a utiliser un mat classique de levage represente sous le repere 1 sur la figure 1 Ce mat comprendra en general 2 piedsen triangle et il sera maintenu en tete par un hauban repere 2 I1 compotre en tete 2 poulies repere 4
Un premier cable repere 5 passe sur l'une des poulies et vient se fixer sur un dispositif de traction repere 6 ( treuil ou tire fort les profiles d'assemblage des toles successives repere 7 ,8 ,9 sont fixes au cable par une agrafe repere 10 en fer plat plie fixee elle meme au cable par un serre cable repere 11 sur la figure lorsque l'un des profile d'assemblage atteint la position 12 il est relie par une agrafe identique a 10 au cable repere 13 qui passe sur la deuxieme poulie de renvoi 4 pour se fixer a un deuxieme dispositif de traction non represente Cette seconde agrafe est disposee a cote de l'agrafe 10
Une traction limitee au cable 13 permet alors de degager le profile de l'agrafe 10 et par le poids de l'onde le profile 12 vient dans la position 14 Ce basculement provoque le ripage du profile 15 supporte par le potelet 16 qui glisse lui meme sur la poutre porteus 17 et ainsi de proche en proche les ondes avancent sur la poutre porteuse ce mouvement pouvant etre facilite par un cable tracteur horizontal les ondes sont maintenues en forme par les entretoises re
POur assurer le formage de l'onde au sol on utilise des supports repere 18 comportatn un pied vertical et un pied plie a 45
Sur ces supports sont disposes 2 profiles 19 et 20 dont la longueur est egale a celle de la tole a assembler et distant d'une longueur egale environ aux deux tiers de la tole21 dont une partie se trouve ainsi en porte a faux On remarquera que l'extremite de la tole apposee au porte a faux penetre a l'interieur du profile 19 en forme de coulisse en C
La tole precedente repere 22 qui est amoitie formee est alors redscendue sur la partie en porte a faux de la tole 21 en relachant le treuil 6
Ce mouvement provoque le formage de l'onde 21 suivant le trace pointille cette deformrtion provoquant a son tour le formage complet de la tole 22
Le profile de bordure de cette derniere sera alors enfile simultanement dans les 2 toles 21 et 22 pour les assembler
Pour realiser cet assemblage on pourra pratiquer sur ea 2 toles c concernees des emboutis en quinconce et utiliser une coulisse en C dont l'ouverture correspondra a la profondeur de 1' embouti
Les 2 toles etant alors aisement enfilees dans le profile elles se trouveront solidarisees avec le profile des que l'angle des 2 toles sera ouvert par la suite du montage tel que cela est represente sur la figure 3 . cette ouverture permettra de serrer les toles contre la rainure du raidisseur et de transmettre par frottement les efforts de la tole au raidisseur In a first patent filed on 1/15/68 we defined a method of lifting prefabricated elements using cables and deflection pulleys fixed to the building
In our patent of 2/7/81 we have finished a different process consisting in sliding the manufactured elements on the ground on a spoke: taking support on the building an articulated rod allowing to soul the sheets in position of assembly on the ground
In the addition of 1/12/81 the rail was replaced by a star whose spacing of the branches corresponded to the width of the elements which were supported on it the present patent defines notably different provisions characterized in particular by the suppression of any connection of the lifting system with the building, by the automatic shaping of the wave without intervention neither of rods nor of intervention of opened and finally by the automatic positioning of the sheets to shape the joint
This new process consists in using a conventional lifting mast represented under the mark 1 in FIG. 1 This mast will generally comprise 2 triangle feet and it will be held in head by a guy wire marked 2 I1 headboard 2 pulleys marked 4
A first cable marked 5 passes over one of the pulleys and is fixed on a traction device marked 6 (winch or pulls strongly the assembly profiles of the successive sheets marked 7, 8, 9 are fixed to the cable by a staple marked 10 in folded flat iron fixed itself to the cable by a cable clamp marked 11 in the figure when one of the assembly profiles reaches position 12 it is connected by a staple identical to 10 to the marked cable 13 which passes over the second deflection pulley 4 to attach to a second traction device not shown This second clip is arranged next to clip 10
A traction limited to the cable 13 then makes it possible to release the profile of the clip 10 and by the weight of the wave the profile 12 comes into the position 14 This tilting causes the profile 15 to slip, supported by the post 16 which slides itself on the supporting beam 17 and thus gradually the waves advance on the supporting beam, this movement being able to be facilitated by a horizontal tractor cable the waves are maintained in shape by the spacers re
To ensure the formation of the wave on the ground we use supports marked 18 comprising a vertical foot and a foot folded at 45
On these supports are arranged 2 profiles 19 and 20 whose length is equal to that of the sheet metal to be assembled and distant by a length equal to approximately two thirds of the sheet metal21, part of which is thus cantilevered. It will be noted that the end of the sheet affixed to the overhang inside the profile 19 in the shape of a C-shaped slide
The previous sheet marked 22 which is loosely formed is then lowered onto the cantilevered part of the sheet 21 by releasing the winch 6
This movement causes the formation of the wave 21 according to the dotted trace this deformation causing in turn the complete formation of the sheet 22
The edge profile of the latter will then be threaded simultaneously into the 2 sheets 21 and 22 to assemble them
To carry out this assembly one will be able to practice on ea 2 sheets c concerned stamped in staggered rows and use a slide in C whose opening will correspond to the depth of 1 stamped
The 2 sheets being then easily threaded into the profile they will be secured to the profile as soon as the angle of the 2 sheets will be opened after mounting as shown in Figure 3. this opening will tighten the sheets against the groove of the stiffener and transmit by friction the forces of the sheet to the stiffener

Claims

Claims 1 method of lifting and forming waves in thin sheets elastically deformed characterized by the use of lifting masts comprising at the head 2 pulleys for 2 tracer cables 2 method according to claim 1 characterized by the connection of one of the tractor cables with each wave stiffener by means of a folded sheet metal clip on which the stiffener is simply laid 3 method according to claim characterized by a connection of the two towing cables to the stiffener located substantially at the load-bearing frame by a sheet metal clip folded located near the clip of the first cable 4 device according to claim 3 characterized by lifting the second cable so as to release the corresponding stiffener from the clip connected to the first cable 5 device according to claim 4 characterized by the fact that the release of the first clip makes it possible to tilt the corresponding wave this tilting causing the translation of the resting waves t already on the supporting beam 6 device according to claim 5 characterized by the use of a horizontal cat tractor to facilitate the translation of all of the waves 7 device according to claim S characterized by the positioning at the foot of the mast of a sheet unwinding site 8 device according to claim è characterized by the use of transverse supports of which one of the feet is inclined 9 device according to claim 8 characterized by the installation on the supports of 2 longitudinal profiles in the form of a slide in c the spacing of which is less than the width of the sheet 10 device according to claim 9 characterized by the unwinding of a sheet engaged on one side in one of the preceding profiles and the other side of which overhangs the second profile 11 device according to claim 10 characterized by the curving of the sheet thus unwound thanks to the descent of all the waves arranged vertically, the lowest of which is supported on r the cantilever causes the curving of the two waves concerned 12 device according to claim it characterized by the realization of the connection of the 2 sheets by threading the C-profile simultaneously in the 2 sheets and by maintaining it by stampings on each sheet 13 Device according to claim 12 characterized by the determination of the dimensions of the stampings and of the groove of the profile so that the stamping penetrates freely into the profile while by spreading the sheets during laughing EACH TOL IS TIGHTEN AGAINST THE LIPS of the product to ensure the 'tightness and allow the transmission by friction of the forces of the sheet to profile 14 device according to claim 5 characterized by the establishment of articulated spacers to maintain the shape of the waves