IT8020297A1

IT8020297A1 - FORMWORK PANEL FOR CONCRETE WALLS WITH WEDGE CONNECTIONS

Info

Publication number: IT8020297A1
Application number: IT1980A20297A
Authority: IT
Original assignee: Peri Werk Schwoerer Kg Artur
Priority date: 1979-03-03
Filing date: 1980-02-29
Publication date: 1981-08-29
Also published as: ES488305A1; IT1150087B; IT8020297A0; CH650306A5; CH648892A5

Description

DOCUMENTAZIONE DOCUMENTATION

RILEGATA BOUND

D E S C R I Z I O N E DESCRIPTION

annessa a domanda di brevetto per INVENZIONE INDUSTRIALE dal titolo: attached to a patent application for INDUSTRIAL INVENTION entitled:

" PANNELLO PER CASSEFORJViE PER PARETI DI CALCESTRUZZO CON COL-LEGAMENTI A CUNEO?? "PANEL FOR SAFE FOR CONCRETE WALLS WITH WEDGED COL-LIGAMENTS ??

R I A S S U N T O SUMMARY

In un pannello per casseforme per pareti di calcestruzzo con una base per casseforne e un telaio di acciaio che la sopporta, il quale presenta dei Montanti estendentesi lungo i bordi della base e coae Minino una slitta per cuneo situata su un saettone trasversale del telaio, la quale prece una estremit? di una barra che cavsl-lotta il giunto tra due pannelli adiacenti centro parti del telai? di quest? pannello, la slitta (20) ? guidata su un saettone trasversale (5) e presenta una sezione che sostanzialmente ? fatta a U, i suoi montanti (22) portano delle sporgenze (24) estendentesi verso 1.!interne, le quali costituiscono con le sporgenze (15) che sporgono lateralmente sul saettone (5) un collegaaento a cuneo, il saettone (5) ? pi? basso del montante del telaio (4) di una quantit? pari alla grossezza del giogo ( 30 ) della slitta ( 20 ) . La slitta ( 20) pu? essere portata in una posizione , da cui essa non sporge durante il trasporto dei pannelli al di sopra della superficie del telaio opposta al piane della base e il collegamento risulta molto stabile . (Fig. 3) ? In a formwork panel for concrete walls with a formwork base and a steel frame supporting it, which has Uprights extending along the edges of the base and like Minino a wedge slide located on a transverse beam of the frame, the which precedes an extremity? of a bar that cavsl-struggle the joint between two adjacent panels center parts of the frames? of this? panel, the slide (20)? guided on a transversal arrow (5) and has a section that substantially? made in a U shape, its uprights (22) carry projections (24) extending towards the inside, which with the projections (15) projecting laterally on the arrow (5) a wedge-shaped connection, the arrow (5) ? pi? low of the upright of the frame (4) of a quantity? equal to the thickness of the yoke (30) of the slide (20). The sled (20) can? be brought into a position, from which it does not protrude during the transport of the panels above the surface of the frame opposite the plane of the base and the connection is very stable. (Fig. 3)?

PANNELLO PER CASSEFORME PER PARETI DI CALCESTRUZZO FORMWORK PANEL FOR CONCRETE WALLS

C .ON COLLEGAME .NTI A CUNEO . C .ON CONNECTION .NTI TO WEDGE.

L ' invenzione si riferisce ad un pannello per casseforme per pareti di calcestruzzo con una base per casseforme e un telaio di acciaio che la sopporta, il quale presenta lungo i bordi della base dei montanti di telaio e saettoni trasversali che li collega, essendo previsti dei collegamenti a cuneo agguantanti sul telaio che utilizzano una barra cavallottante il giunto tra due pannelli adiacenti, la quale viene pressata su ambedue le estremit? mediante la slitta per cuneo contro parti di telaio di questi pannelli per il fissaggio e allineamento di pannelli adiacenti, essendo la slitta per cuneo fissata sul telaio in maniera che essa possa essere portata in una posizione in cui durante il trasporto dei pannelli non sporga al di sopra della superficie del telaie opposta al piano della base. In un noto pannello corrispondente a DE-OS 27 57 450.1, il telaio contiene un particolare segmento di trave che estendendosi parallelamente alla barra ? di collegamento e parallelamente e scostate da un saettone trasversale viene saldato ad un montante del telaio e sporge da questo nel piano del telaio verso l'interno, deve l'estremit? di questo seguente di trave ? libera. Su quest? seguente di trave la slitta per cune? ? riportata in maniera che essa pu? essere rovesciata sulla estremit? libera della trave attorno ad un asse che corre verticale rispetto alla direzione di trasporto della slitta al di sopra dello, spigolo frontale libero dalla,trave, cosi che la slitta non sporge pi? al di sopra della superficie del telaio opposta al piano della base. Si tende a tal? risultato in modo di poter comodamente accatastare l'uno sopra l'altro i pannelli durante il trasporto verso il cantiere. The invention relates to a formwork panel for concrete walls with a formwork base and a steel frame that supports it, which has along the edges of the base frame uprights and transverse rods that connect them, since some wedge connections gripping on the frame that use a bar bridging the joint between two adjacent panels, which is pressed on both ends? by means of the wedge slide against frame parts of these panels for fastening and aligning adjacent panels, the wedge slide being fixed to the frame so that it can be brought into a position where during the transport of the panels it does not protrude beyond above the surface of the frame opposite the base plane. In a known panel corresponding to DE-OS 27 57 450.1, the frame contains a particular beam segment which extends parallel to the bar? connection and parallel and away from a transverse bolt is welded to a frame upright and protrudes from this in the plane of the frame towards the inside, must the extremity? of this beam following? free. On this? beam following the sled for wedges? ? reported in a way that it can? be overturned on the extremity? free of the beam around an axis that runs vertical with respect to the transport direction of the slide above the front edge free from the beam, so that the slide no longer protrudes? above the surface of the frame opposite the plane of the base. Do we tend to that? result in order to be able to conveniently stack the panels on top of each other during transport to the construction site.

Queste noto pannello tuttavia presenta lo svantaggio che, per ottenere il collegamento a cuneo, viene richiesta una particolare trave che deve essere saldata sul telaio con superficie frontale libera e che la stabilit? di questo segmento di trave fissato sul montante del telaio soltanto con un lato non risulta particolarmente alta, cos? che la barra di collegamento tra duer pannelli adiacenti fissata su questi segmenti di trave mediante la slitta a cuneo non pu? sopportare sui pannelli momenti di torsione troppo grandi e per conseguenza 1 pannelli adiacenti non possono spesso essere portati esattamente sul piano delle casseforme con il semplice serraggio dei collegamenti a cuneo? Per motivi di stabilit?, questi segmenti di trave devono essere fias?ti sul telaio in una posizione il pi? adiacente possibile ad un saettone trasversale. Questo comporta tuttavia che la Blitta per cuneo solamente sulla sua estremit? opposta alla superficie della base presenta una superficie su cui agire ??? il aartelle durante il serraggi? della slitta, poich? This known panel, however, has the disadvantage that, in order to obtain the wedge connection, a particular beam is required which must be welded on the frame with a free front surface and that the stability? of this segment of beam fixed on the upright of the frame only with one side is not particularly high, so? that the connecting bar between two adjacent panels fixed on these beam segments by means of the wedge slide cannot? to withstand too large torsional moments on the panels and consequently the adjacent panels cannot often be brought exactly to the plane of the formwork by simply tightening the wedge connections? For the sake of stability, these beam segments must be fitted to the frame in the most position. adjacent as possible to a transverse thunderbolt. However, this implies that the Blitta for wedge only on its extremity? opposite to the surface of the base has a surface on which to act ??? the aartelle during the tightening? of the sled, since?

una superficie prevista per tale azione1tra il segmento della trave e il saettane trasversale ? raggiungibile dal Martello solo con molta difficolt? a causa della piccola intercapedine tra la trave e il saettane. Inoltre??&1 pannello tradizionale la slitta per cuneo ? costituita da una parte chiusa presentante quattro pareti, sulla cui sezione interna agguantane sia la barra di connessione, sia il segmento di trave, il che ha come conseguenza che nel pannello tradizionale il segmento portante censiste solamente di una barra piatta affacciata aila superficie del cuneo con l?estremit? angolata verso l?interno, il che ancora una v?lta influenza negativamente la stabilit? del collegamento a cuneo. an area provided for this action1 between the beam segment and the transverse bolt? reachable from the Hammer only with great difficulty? due to the small gap between the beam and the bolt. Also ?? & 1 traditional panel the wedge slide? consisting of a closed part having four walls, on the internal section of which both the connecting bar and the beam segment are gripped, which has the consequence that in the traditional panel the load-bearing segment consists only of a flat bar facing the surface of the wedge with the extremity angled inwards, which again negatively affects stability. of the wedge connection.

Il compito di questa invenzione ? di evitare gli inconvenienti del pannello tradizionale. The task of this invention? to avoid the drawbacks of the traditional panel.

Quest? compito viene assolto con il fatto che la slitta per cuneo viene sistemata con una modalit? nota su un saettone trasversale posto nella zona del collegamento a cuneo e che normalmente assume la forma di u, i cui montanti portano delle sporgenze estendentesi verso l?interno, le quali fermano un colle? gemente a cuneo con le parti situate lateralmente al saettone e che il saettone ? pi? basso del montante del telaio della quantit? corrispondente alla grossezza del giogo della slitQuesta forma esecutiva .dell?invenzione presenta il vantaggio, che per il collegamento a cuneo viene utilizzate un saettone trasversale del telaio, il quale mostra una stabilit? sostanzialmente maggiore rispetto al segmento di trave del pannello tradizionale che ? saldato solamente per un lato, cos? che attraverso questo collegamento a cuneo possono essere esercitati dei movimenti torcenti molto pi? grandi, mentre pannelli adiacenti possono essere costretti sul piano delle cassaforme mediante il semplice serraggio di questo collegamento a cuneo. Tuttavia anche il pannello relativo alla invenzione presenta il vantaggio che la slitta durante il trasporto dei pannelli pub essere portata in una posizione in cui essa non sporge al di sopra della superficie del telaio opposta al piano della base, poich? il saet^ tono trasversale ? pi? piccolo del montante del telaio nella quantit? corrispondente alla grossezza del giogo della slitta. Quest? task is fulfilled with the fact that the wedge slide is arranged with a modality? note on a transversal arrow placed in the area of the wedge connection and which normally takes the shape of u, the uprights of which carry protrusions extending inwards, which stop a glue? wedge-shaped moaning with the parts located laterally to the thunderbolt and what the thunderbolt? pi? low of the upright of the frame of the quantity? corresponding to the thickness of the yoke of the slit. substantially greater than the traditional panel beam segment which? welded only for one side, cos? that much more twisting movements can be exerted through this wedge connection. large, while adjacent panels can be forced onto the plane of the formwork by simply tightening this wedge connection. However, also the panel relating to the invention has the advantage that the sled during the transport of the panels can be brought to a position in which it does not protrude above the surface of the frame opposite the plane of the base, since it does not protrude above the surface of the frame opposite the plane of the base. the transverse saet ^ tone? pi? small of the upright of the frame in the quantity? corresponding to the thickness of the yoke of the slide.

Questa disposizione del collegamento a cuneo immediatamente sul saettane permette anche di sistemare sulla slitta delle superfici su cui agire con il martello durante il serraggio non solamente nella zona del suo giogo, bens? anche sulle sue superf?ci laterali, quindi nella immediata vicinanza delle superf?ci del cuneo. Poich? la slitta ? applicata su un saettone trasversale in modo che possa spostarsi,pub essere impedito in maniera sem*-plice che la slitta cada dal pannello nella posizione di trasporto. In una forma esecutiva relativa alla invenzione le part? sporgenti poste lateralmente al saettone sono previste vicino a una piastra che viene fissata sulla superficie del saettane opposta al pian? della base e la slitta pu? essere spestata lungo il saettane di una quantit? tale che essa pu? uscire dalla presa delle sporgenze del saettene che servono per il collegamento a cune?. This arrangement of the wedge connection immediately on the bolt also allows to arrange on the slide surfaces on which to act with the hammer during tightening not only in the area of its yoke, but also in the area of its yoke. also on its lateral surfaces, therefore in the immediate vicinity of the wedge surfaces. Since? the sled? applied on a transverse rod so that it can move, it can simply be prevented from falling from the panel into the transport position. In an executive form relating to the invention, the part? protrusions placed laterally to the arrow are provided near a plate which is fixed on the surface of the arrow opposite the floor? of the base and the sled can? be plucked along the arrow of a quantity? such that it can? exit from the socket of the protrusions of the lightning bolt which are used for the connection to wedges ?.

A tal proposito le parti spercenti lateralmente dal saettene oppure le sporgenze delle estremit? dei,montanti della slitta che stanne in dentro oppure ambedue le parti fermane superfici a cune?. Ih una ferma esecutiva relativa alla invenzione sene previste, sulle pareti laterali del saettene cerrenti perpendicolarmente al pian? della base, delle sporgenze le quali in concomitanza c?n sporgenze sul lato interne dei montanti della slitta tengono fissa questa in una posizione ribassata, nella quale pu? essere portata la slitta, se essa vien? spestata di ?una quantit? tale per cui essa non agguanta pi? in quelle sporg?nze del saettane che appartengono al co?legamento a cuneo e in cui essa viene abbassata di tanto da non sporgere pi? al. di sopra della superficie del telaio opposto al piano della base, cos? che il lato posteriore del telaio forma una superficie di appoggio piana per i pannelli che durante il trasporto sono messi sopra. Sulle pareti laterali del saettene possono essere previste per una forma esecutiva relativa alla invenzione delle superfici di guida le quali guidano la slitta dalla posizione alta alla?posizione bassa e nella posizione'bassa fissano mediante l?effetto cuneo. In this regard, the parts protruding laterally from the arrow or the protrusions of the extremities? of the uprights of the slide that stay inside or both parts stop wedged surfaces ?. If an executive stop relating to the invention is envisaged, on the lateral walls of the arrowheads perpendicularly to the floor? of the base, of the protrusions which in concomitance there are protrusions on the inner side of the uprights of the slide hold this fixed in a lowered position, in which it can? be brought the sled, if it comes? plundered by? a quantity? such that it does not grab more? in those protrusions of the saettane which belong to the wedge-shaped connection and in which it is lowered so much that it no longer protrudes. to the. above the surface of the frame opposite the plane of the base, so? that the rear side of the frame forms a flat support surface for the panels which are placed on top during transport. Guiding surfaces which guide the slide from the high position to the low position and in the low position fix by means of the wedge effect may be provided on the side walls of the bolt for an embodiment relating to the invention.

Per una forma esecutiva relativa alla invenzione sene previsti dei Mezzi i quali, per permettere di infilare la barra collegante assieme pannelli adiacenti nella slitta, tengono la slitta stessa in una posizione che risulta rialzata rispetto alla posizione ribassata, nella quale la altezza interna della slitta ? pi? grande dell?altezza della sezione della barra. Queste fatto presenta il vantaggio che risulta molto semplice infilare la sbarra di'collegamento nella slitta. Qualora non siano previsti tali Bezzi, la slitta che risulta mobile nella sua altezza interna non risane da s?la in questa posizione rialzata, poich? la inserzione della sbarra di collegamenti avviene con pannello tenute verticalmente e la slitta quindi nell'ambito della sua mobilit? si rovescia verso il basso in qualche posizione inclinata, cos? che durante l?operazione di inserzione la slitta deve essere tenuta nella sua posizione rialzata aanualmente. ?Ci? viene ovviato con la forma esecutiva relativa alla invenzione. Questi mezzi che fissano la slitta nella posizione rialzata possono essere costituiti per esempio da sporgenze le quali nella posizione rialzata agguantane al di sotto di una superficie prevista sulla slitta, e possono agguantare per esempio anche setto la superficie frontale delle estremit? dei montanti della slitta. For an embodiment relating to the invention, means are provided which, in order to allow the bar connecting together adjacent panels to be inserted into the slide, hold the slide itself in a position which is raised with respect to the lowered position, in which the internal height of the slide? pi? greater than the height of the bar section. This fact has the advantage that it is very simple to insert the connecting bar into the slide. If such Bezzi are not provided, the slide that is mobile in its internal height does not heal itself in this raised position, since the insertion of the connection bar takes place with the panel held vertically and the slide therefore within its mobility? spills downward in some inclined position, so? that during the insertion operation the slide must be kept in its raised position manually. ?There? this is obviated with the embodiment relating to the invention. These means which fix the slide in the raised position can be constituted for example by protrusions which in the raised position grab underneath a surface provided on the slide, and can for example also grab the front surface of the ends. of the uprights of the slide.

Per poter facilitare una sostituzione della slitta, ? previsto tra le guid? che fanno scivolare verso il basso la slitta e le superfici del cuneo fissate sule saettone in direzione di spostamento della slitta un intervallo che peraette una estrazione della slitta dalle guide previste sul saettone nella zos? di questo intervalle. A tal proposito questo intervallo pu? essere chiuso mediante una piastra asportabile e sporgente lateralmente dal saettone, cos? che con tale piastra inserita non risulta pi? possibile togliere la slitta dal saettane. Tale piastra sporge al di sopra delle superfici laterali del saettone di tanto quanto sporgono le sporgenze fissate sul saettone ed appartenenti al collegamento a cuneo. In una forma esecutiva relativa alla invenzione la slitta presenta su ambedue le sue estremit? ima costola estendetesi perpendicolarmente al piano della base, la quale pu? esse-' re utililizzata come superficie su cui battere con il martello durante il serraggio della slitta. In una forma esecutiva relativa alla invenzione la superficie del cuneo del collegamento si estende perpendicolarmente all'angolatura del cuneo inclinata in modo che durante il serraggio del collegamento i montanti della slitta vengono tirati verso l'interno. Con il fatto che durante il serraggio del cellegamento i montanti della slitta vengono tirati verso l'interno e quindi contro le superfici laterali del saettone, si contrasta la tendenza per cui i montanti a causa delle forze di tensione sono sospinti verse l'esterno. In questo modo possono essere generate, rispetto ad una forma esecutiva senza su? ? perfici di cune? evolventisi come da invenzione, maggiori forze sul cuneo a parit? di sforzo di materiale, oppure per la generazione di uguali forze la slitta pu? essere dimensionata pi? debolmente in particolare nella zona del suo giogo. In order to facilitate a replacement of the slide,? expected between the guid? which cause the slide and the surfaces of the wedge fixed on the bolt to slide downwards in the direction of movement of the slide an interval which permits an extraction of the slide from the guides provided on the bolt in the zos? of this interval. In this regard, this interval can? be closed by means of a removable plate and protruding laterally from the arrow, so? that with this plate inserted it is no longer? It is possible to remove the sled from the arrow. This plate protrudes above the lateral surfaces of the rod as much as the projections fixed on the rod and belonging to the wedge connection protrude. In an embodiment relating to the invention, the slide has on both its ends? a rib extending perpendicular to the plane of the base, which can? be used as a surface to hit with the hammer when tightening the slide. In one embodiment relating to the invention the surface of the wedge of the link extends perpendicular to the angle of the inclined wedge so that during tightening of the link the uprights of the slide are pulled inward. The tendency for the uprights to be pushed outwards due to tension forces is counteracted by the fact that during the tightening of the frame the uprights of the slide are pulled inwards and therefore against the lateral surfaces of the strut. In this way they can be generated, compared to an executive form without on? ? perfici di cune? evolve as per invention, greater forces on the wedge at par? of effort of material, or for the generation of equal forces the slide can? be sized more? weakly especially in the area of its yoke.

La stabilit? della disposizione viene notevolmente migliorata prozie alla invenzione. A dire il vero l'invenzione pu? essere vantaggiosamente realizzata con il pannello sopradescritta, essa tuttavia pu? trovare impiego anche dovunque vengano utilizzate le slitte per cuneo descritte all'inizio per il fissaggio di sbarre cavallottanti il giunto tra due pannelli adiacenti. L'inclinazione della superficie del cuneo tale per cui i montanti della slitta vengono tirati in direzione sopra il piano di simmetria della slitta, pu? essere proporzionatamente piccola. In una forma esecutiva relativa alla invenzione ? previsto che questa inclinazione valga circa 10?. L'inclinazione secondo invenzione delle superfici del cuneo pu? essere realizzata per diverse forme esecutive di collegamenti a cuneo. Per esempio il collegamento a cuneo pu? presentare delle sporgenze dirette dai montanti della slitta verso l'interno, le quali poi agguantano con sporgenze con superfici a cuneo poste lateralmente al saettone oppure sotto. In una forma esecutiva in cui le sporgenze dei montanti della slitta agguantano in sporgenze che sono previste sul lato inferiore del saettone, questa superficie inferiore rivolta verso la base presenta una distanza dalla superficie della base a lei contrapposta che corrisponde come minimo al tratto di serraggio possibile mediante il collegamento e il saettone del telaio sporge sulla sua -estremit? libera, affinch? la slitta possa essere spostata da questa estremit? libera sul saettone senza allargamento dei montanti della slitta stessa. The stability of the arrangement is greatly improved by the invention. To tell the truth, the invention can? advantageously be made with the panel described above, however it can? they can also be used wherever the wedge slides described at the beginning are used for fixing bars bridging the joint between two adjacent panels. The inclination of the surface of the wedge such that the uprights of the slide are pulled in the direction above the plane of symmetry of the slide, can? be proportionately small. In an embodiment related to the invention? predicted that this inclination is worth about 10 ?. The inclination according to invention of the surfaces of the wedge can? be made for different embodiments of wedge connections. For example, the wedge connection can? have protrusions directed from the uprights of the slide towards the inside, which then grab with protrusions with wedge-shaped surfaces placed laterally to the rail or below. In an embodiment in which the projections of the uprights of the slide grip into projections which are provided on the lower side of the rod, this lower surface facing the base has a distance from the surface of the base opposite it which corresponds at least to the possible clamping section. by means of the connection and the saettone of the frame protrudes on its -end? free, so that? the sled can be moved from this end? free on the strut without widening the uprights of the slide itself.

L'invenzione non ? linitata a ferme esecutive in cui i montanti della slitta presentane delle sporgenze dirette verse l'interno, in altre ferme esecutive i montanti della slitta possono presentare una scanalatura evelventesi seconde l'angolazione del cuneo, in cui ? riportata una sporgenza discostantesi lateralmente dal saettene? Anche in questo case almeno la parete della scanache viene a contatto con la sporgenza durante il serraggio e la parete della sporgenza adiacente devono essere inclinate perpendicolarmente all'angolazione del cuneo in modo che durante il serraggio del collegamento i montanti della slitta vengono tirati verso l'interno? Nei normali pannelli i telai di acciaio presentano profilati vuoti rettangolari, che sono disposti lungo il bordo della base per casseforme costituita normalmente di un pannello di legno compensato. Lungo il bordo della base sono previste delle scanalature che assumono normalmente la forma di fori per l'inserzione di bulloni di ancoraggio, i quali attraversane la base e la parete del profilato vuoto sostenente la base come pure la parete del profilato vuoto a questa parete contrapposta? Quelle scanalature in cui non viene inserito nessun bullone di ancoraggio, devono essere chiuse prima di versarvi dentro il calcestruzzo con un tappo di plastica o qualcosa di simile, affinch? il calcestruzzo non entri nei buchi e indurisca. L'esperienza insegna tuttavia che per vari motivi le scanalature non occupate da bulloni di ancoraggio rimangono aperte, sia perch? non si ha per mano una cappa di chiusura, sia per altri motivi The invention is not? limited to executive stops in which the uprights of the slide have protrusions directed towards the inside, in other executive stops the uprights of the slide can have a fastening groove according to the angle of the wedge, in which? reported a protrusion deviating laterally from the arrow? Also in this case at least the wall of the groove that comes into contact with the projection during clamping and the wall of the adjacent projection must be inclined perpendicular to the angle of the wedge so that during clamping of the connection the uprights of the slide are pulled towards the internal? In normal panels, the steel frames have rectangular hollow sections, which are arranged along the edge of the formwork base which is normally made of a plywood panel. Along the edge of the base there are grooves which normally take the form of holes for the insertion of anchoring bolts, which cross the base and the wall of the empty profile supporting the base as well as the wall of the empty profile to this opposite wall. ? Those grooves where no anchor bolts are inserted must be closed before pouring the concrete into them with a plastic plug or something similar. the concrete does not enter the holes and harden. However, experience shows that for various reasons the grooves not occupied by anchor bolts remain open, both because? you do not have a closing hood by hand, either for other reasons

Al moment? della riutilizzazione dei pannelli, in molti casi per 1?inserzione dei bulloni di ancoraggio devono essre liberati con l'ausilio di un trapano per calcestruzzo i fori dal calcestruzzo penertato e indurito, il che non soltanto risulta lungo e noioso, ma disturba anche il rapido succedersi delle operazioni per l'armatura delle casseforme? At the moment? of the re-use of the panels, in many cases for the insertion of the anchor bolts the holes must be freed from the penetrated and hardened concrete with the help of a drill for concrete, which not only results long and tedious, but also disturbs the rapid a succession of operations for the reinforcement of the formwork?

A dire il vero ? gi? noto che le scanalature attraverso il telaio di acciaio e la base devono essere previste un poco pi? grandi e che la scanalatura viene saldata ad un manicotto, il quale impedisce che il calcestruzzo entrate penetri nello spazio interno vuoto del profilato vuoto rettangolare del telaio? In questo modo tuttavia non viene facilitata l'operazione di asportazione di un tappo di calcestruzzo indurite in questo manicotto di acciaio, bens? viene resa ancora pi? difficile a causa della aderenza del tappo di calcestruzzo indurito sulla parete interna del manicotto di acciaio? In base alla invenzione il foro ? conico ed ? previsto in un manicotto di plastica, il quale attraversando il telaio viene in esso fissato. In questo modo viene facilitata l'asportazione del calcestruzzo penetrato ? indurito in fori di questo tipo? Grazie all'andamento conico della foratura e al fatto che il manicotto non ? come il solito di acciaio, bens? di plastica, il calcestruzzo indurito aderisce in questo foro cos? poco che il tappe di calcestruzzo pu? essere tolto dalla estremit? del foro presene? tante il diametro minore con il martello oppure se necessario con 1* ausilio di una sbarra, cos? che non risulta pi? necessario nessun trapano particolare per la pulizia di simili fori per bulloni per ancoraggio. Il materiale con cui ? costruito il manicotto di plastica deve essere cos? resistente agli urti, che il manicotto non deve roiapersi durante i colpi che si danno per asportare il tappo di calc?struzzo, ed inoltre il foro l?ggermente conico del manicotto di plastica deve presentare una superficie interna liscia, il che avviene tuttavia con le maggior parte delle plastiche? Se qui si parla di un "foro" del manicotto di plastica, ci? non deve necessariamente significare che la cavit? centrale leggermente conica del manicotto viene ottenuta mediante fori, bens? che questi manicotti vengono ottenuti nella maniera usuale mediante stampaggio ad iniezione o processi simili? Quale materiale per questi manicotti di plastica si presta molto bene un poliaaido, ma essi possono essere fabbricati per? sinch? con un PVC opportunamente preparato. To be honest ? already? I notice that the grooves through the steel frame and the base must be provided a little more? large and that the groove is welded to a sleeve, which prevents the concrete from entering the empty interior space of the rectangular hollow section of the frame? In this way, however, the removal of a hardened concrete plug in this steel sleeve is not facilitated, but? is made even more? difficult due to the adhesion of the hardened concrete plug to the inner wall of the steel sleeve? According to the invention the hole? conical and? provided in a plastic sleeve, which is fixed therein by passing through the frame. Does this make it easier to remove the penetrated concrete? hardened in holes of this type? Thanks to the conical shape of the hole and the fact that the sleeve does not? as usual in steel, but? of plastic, the hardened concrete adheres in this hole so? little that the concrete stages can? be removed from the extremity? of the forum present? many the smaller diameter with the hammer or if necessary with 1 * help of a bar, so? which is not more? No special drill is needed to clean such anchor bolt holes. The material with which? built the plastic sleeve must be cos? impact resistant, that the sleeve must not be lost during the blows that are given to remove the concrete plug, and in addition the slightly conical hole of the plastic sleeve must have a smooth internal surface, which however occurs with the most plastics? If we are talking about a "hole" in the plastic sleeve, there? does not necessarily mean that the cavity? slightly conical center of the sleeve is obtained by means of holes, but? that these sleeves are obtained in the usual manner by injection molding or similar processes? What material for these plastic sleeves is a polyacid very well suited to, but can they be manufactured for? sinch? with a suitably prepared PVC.

In una forma esecutiva secondo invenzione, il diametro maggiore del foro conico del manicotto di plastica si trova sull'estremit? opposta alla base. Ci? presenta innazitutto il vantaggio che il calcestruzzo penetrante attraverso l'estremit? aperta situata sul piano della base durante il suo avanzare nel foro trova una sezione sempre pi? larga ? che si attacca sulla superficie interna del manicotto di plastica con una piccala pressione, non correndosi il rischio quindi che la conicit? del foro venga guastata a causa dell'allargamento del manicotto di plastica in un punto. In an embodiment according to the invention, the major diameter of the conical hole of the plastic sleeve is located at the end. opposite the base. There? First of all, it has the advantage that the concrete penetrating through the extremity? open located on the plane of the base during its advance in the hole finds a section more and more? wide ? that sticks on the inner surface of the plastic sleeve with a small pressure, thus not running the risk that the conicity? hole is damaged due to the expansion of the plastic sleeve in one place.

Poich? la conicit? del foro rimane inalterata anche con lunghi impieghi del pannello, il tappo di calcestruzzo indurito rimane sempre soltanto allentato nel foro anche a causa della mancanza di pressione sulla parete interna, cos? che anche per pi? lunghi periodi di impiego del pannello, esso pu? essere facilmente estratto, eventualmente mediante un s?io colpo di martello. -Inoltre questa forma esecutiva presenta ancora il seguente vantaggio: i bulloni per ancoraggio vengono utilizzati soltanto se un lato di armatura di una parete di calcestruzzo ? gi? presente e viene costruita l'armatura contrapposta. L'operaio lavora quindi sul lato interno dell'armatura gi? preparata. Qualora egli volesse togliere un tapp? di calcestruzzo da un foro dell'armatura gi? impiantata, risulterebbe vantaggioso se egli potesse fare ci? dal posto in cui si trova in quel momento, quindi dal lato interno dell'armatura in precedenza costruita. Inoltre questa forma esecutiva presenta il vantaggio che il tubo distanziatore posto sul bullone di ancoraggio copre il foro pi? piccolo. Per poter fornire al manicotto di plastica una particolare resistenza, il manicotto di plastica pu? essere circondato da un manicotto di sostegno di metallo, preferibilmente di ferro oppure di acciaio. In una forma esecutiva relativa alla invenzione, la scanalatura che accoglie il bullone di ancoraggio allineata con le forature sul telaio per la inserzione del bullone di ancoraggio non vin?ne costruita con un trapano, che inizia a lavorare sull'asse del foro, bens? con una presa che incomincia a lavorare sul bordo della base e che si sposta verso l'interno finch? l'asse della fresa coincide con l'asse della foratura che si trova sul telaio. La cavit? che accoglie il bullone di ancoraggi? presenta quindi due superfici laterali piane che vanno dal bordo verso l'interno, che sfociano poi in una superficie a forma di semicilindro, che risulta allineata con la foratura sul telaio. Secondo invenzione il manicotto di plastica presenta sulla sua estremit? allineata con il piano della base, una testa la quale riempie completamente la forma di un incavo simile ottenuto con una fresa. Questo presenta il vantaggio di impedire la rottura della base sul suo bordo adiacente alla foratura e il fatto che la base possiede una superficie liscia anche in questo punto. Since? the conicity? of the hole remains unchanged even with long uses of the panel, the hardened concrete plug always remains only loosened in the hole also due to the lack of pressure on the internal wall, so? that even for more? long periods of use of the panel, it can? be easily extracted, possibly by means of a hammer blow. -In addition, this embodiment still has the following advantage: anchor bolts are only used if one side of the reinforcement of a concrete wall? already? present and the opposing armature is built. The worker then works on the inside of the armor already? prepared. Should he want to remove a tapp? of concrete from a hole in the reinforcement already? implanted, it would be advantageous if he could do there? from the place where it is at that moment, then from the inner side of the previously constructed armor. Furthermore, this embodiment has the advantage that the spacer tube placed on the anchor bolt covers the largest hole. small. In order to provide the plastic sleeve with a particular resistance, the plastic sleeve can? be surrounded by a support sleeve of metal, preferably of iron or steel. In an embodiment relating to the invention, the groove that accommodates the anchor bolt aligned with the holes on the frame for the insertion of the anchor bolt is not constructed with a drill, which begins to work on the axis of the hole, but rather is built with a drill. with a grip that begins to work on the edge of the base and that moves inwards until? the axis of the cutter coincides with the axis of the hole on the frame. The cavity which accommodates the anchor bolt? it therefore has two flat side surfaces that go from the edge towards the inside, which then flow into a surface in the shape of a half cylinder, which is aligned with the hole on the frame. According to the invention, the plastic sleeve has on its extremity? aligned with the plane of the base, a head which completely fills the shape of a similar recess obtained with a cutter. This has the advantage of preventing breakage of the base on its edge adjacent to the perforation and the fact that the base also has a smooth surface at this point.

L'invenzione pu? essere realizzata anche in maniera tale per cui in un pannello, in cui vengono impiegati in cavit? del telaio di acciaio i manicotti di metallo accoglienti i bulloni di ancoraggio, la parete interna della foratura viene rivestita con uno strato di plastica, cos? che si possono ottenere sostanzialmente gli stessi vantaggi come nella forma esecutiva relativa alla invenzione, costituendo il manicotto di plastica \jna parte autonoma. La foratura del manicotto di metallo si allarga in forma leggermente conica in direzione dell'estremit? opposta alla base e lo strato di plastica mostra lungo il tubo uno spessore circa costante. The invention can? also be made in such a way that in a panel, in which they are used in cavities? of the steel frame the metal sleeves accommodating the anchor bolts, the inner wall of the drilling is covered with a layer of plastic, so? that substantially the same advantages can be obtained as in the embodiment relating to the invention, by constituting the plastic sleeve as an independent part. The hole in the metal sleeve widens in a slightly conical shape towards the end? opposite the base and the plastic layer shows an approximately constant thickness along the tube.

Anche la foratura del manicotto di metallo pu? essere cilindrica e in tale foratura pu? essere pressato un manicotto di plastica con foratura conica, dove il nanicotto di plastica presenta sul suo lato esterno un ingrossamento ad anello, il quale agguanta in una scanalatura ad anello sulla superficie interna del manicotto di metallo. Nella figura viene rappresentala una forma esecutiva della invenzione. Even the drilling of the metal sleeve can? be cylindrical and in this drilling can? be pressed into a plastic sleeve with conical perforation, where the plastic nanocouple has a ring-like enlargement on its outer side, which grips in a ring groove on the inner surface of the metal sleeve. An embodiment of the invention is represented in the figure.

Fig. I nostra una rappresentazione semplificata di un pannello per casseforme, in scala piccola senza la presenza del dispositivo di serraggio. Fig. I our a simplified representation of a formwork panel, on a small scale without the presence of the clamping device.

Fig. 2 mostra il dispositivo di serraggio relativo alla zona II del pannello per casseforme rappresentato in fig. I senza la barra di collegamento in scala molto ingrandita. Fig. 2 shows the clamping device relating to zone II of the formwork panel shown in fig. I without the link bar on a very large scale.

Fig. 3 mostra una vista secondo la freccia III in fig. 2 e Fig. 4 mostra una sezione secondo la linea IV - IV in fig. 3? Fig. 5 mostra una sezione mediante il taglio trasversale del telaio formato con un profilato cavo secondo fig. I. Fig. 3 shows a view according to the arrow III in fig. 2 and Fig. 4 shows a section along the line IV - IV in fig. 3? Fig. 5 shows a section through the transversal cut of the frame formed with a hollow section according to fig. THE.

Fig. 6 mostra in scala ingrandita una sezione longitudinale attraverso il foro corrispondente alla linea IV - IV della fig. 7. Fig. 6 shows on an enlarged scale a longitudinal section through the hole corresponding to the line IV - IV of fig. 7.

Fig. 7 mostra una vista dall'alto sul foro in direzione della freccia VII della fig. 6. Fig. 7 shows a top view of the hole in the direction of arrow VII of fig. 6.

Fig. 8 mostra una sezione corrispondente alla fig. 6 per una altra forma:esecutiva del manicotto. Fig. 8 shows a section corresponding to fig. 6 for another form: executive of the sleeve.

Un pannello per casseforme I ? costituito da un telaio di acciai? 2, il quale a sua volta ? costituito da montanti di telaio 4 correnti lungo i tordi della base per casseforme formata da un sol? pezzp 3 e da saettoni trasversali 5? Nella zona delle estremit? di ogni saettone trasversale 5 ? previsto un dispositivo di serraggio per il collegamento di pannelli adiacenti. Coue la fig. A formwork panel I? consisting of a steel frame? 2, which in turn? consisting of 4-string frame uprights along the thrushes of the formwork base formed by a sol? pezzp 3 and by cross arrows 5? In the area of the extremities? of each transverse bolt 5? a clamping device is provided for connecting adjacent panels. Coue fig.

3:?:e 4 mostrano, il saettone trasversale 5 con riferimento alla parte posteriore della base per casseforae 3 presenta una altezza pi? piccola di quella del montante per telai? 4. 3:?: And 4 show, the transverse arrow 5 with reference to the rear part of the base for safe and 3 has a height more? smaller than that of the upright for frames? 4.

Sul lato superiore IO del? saettone trasversale 5, quindi sul lato non adiacente alla base 3, ? saldato un pezzo fucinato II che ? collegato anche, mediante saldatura, con il montante di telaio 4; esso ? costituito da una piastra 12 situata vicino al saettone trasversale 5, la quale presenta esattamente la medesima larghezza del saettone 5 e che ? costituita a sua volta da sporgenze che si estendono al di sopra del piano delle superfici laterali 13 del saettone 5, mentre la superficie 16 di queste sporgenze che ? rivolta verso la base 3 si evolve a forma di cuneo, cosi che la sua distanza dalla base 3 aumenta man man$ che ci si allontana dal bordo del pannello, come si pu? dedurre dalla fig. 3? Questa superficie a cuneo 16 si estende lungo l'intera lunghezza delle sporgenze 15, e queste a loro volta sono di poco pi? corte della massima lunghezza del pezzo fucinato II, come mostrato in fig. 2.? Il dispositivo di serraggio presenta tra l'altro una slitta 20, la quale ? costituita da un getto formato norns?lraente in forma di U. I montanti 22 della slitta 20 presentano sulle loro estremit? libere delle sporgenze 24 estendentesi verso l?interno, la cui superficie 26 opposta alla base 3 interagisce durante il serraggio con le superfici a cuneo 16 delle sporgenze 15, forcando con queste il collegamento a cuneo. Le sposrgenze 24 si estendono circa per l'intera lunghezza della slitta 20 che appare nella vista laterale della fig. *3 sostanzialmente rettangolare. La slitta 20 presenta nella sua zona terminale opnosta al montante 4 un incavo 29. Nella zona compresa tra i montanti 22 e il giogo 30 della slitta 20 e al di sopra della superficie 31 opposta alla base 3 del pezzo fucinato II ? alloggiata la barra di accoppiamento 33 costituita nell'esempio di esecuzione da un profilato cavo rettangolare. Quando durante il serraggio la slitta 20 viene spinta nella rappresentazione di fig. 2 e 3 verso sinistra, diminuisce l'intercapedine tra il giogo 30 e il pezzo fucinato II, e la barra di accoppiamento 33 viene uniformemente pressata contro il pezzo fucinato II e il montante di telaio 4. Grazie alla disposizione con grande superficie, si ottiene un collegamento nolto stabile, mentre i pannelli adiacenti vengono allineati in un piano. Nella zosoa.terminale del pezzo fucinato II opposta al montante 4 ? prevista una sporgenza estendentesi come minimo al di sopra di uno dem lati 13 del saettone, la quale ? costituita da una barra?piatta 35 sporgente al di sopra di tutti e due i lati 13 e che pu? essere allentata mediante un attrezzo. On the top IO side of the? transverse bolt 5, therefore on the side not adjacent to the base 3,? welded a forging II which? also connected, by welding, with the frame upright 4; it ? consisting of a plate 12 located close to the transverse bolt 5, which has exactly the same width as the bolt 5 and which? constituted in turn by protrusions which extend above the plane of the side surfaces 13 of the arrow 5, while the surface 16 of these protrusions which? facing the base 3 it evolves in the shape of a wedge, so that its distance from the base 3 increases as you move away from the edge of the panel. deduce from fig. 3? This wedge-shaped surface 16 extends along the entire length of the projections 15, and these in turn are slightly larger. court of the maximum length of forging II, as shown in fig. 2.? The clamping device has, among other things, a slide 20, which? constituted by a jet formed norns? lrante in the shape of U. The uprights 22 of the slide 20 have on their ends? of the projections 24 extending inwardly, the surface 26 of which opposite the base 3 interacts during clamping with the wedge-shaped surfaces 16 of the projections 15, forcing the wedge connection therewith. The projections 24 extend approximately for the entire length of the slide 20 which appears in the side view of fig. * 3 substantially rectangular. The slide 20 has a recess 29 in its end area opposite the upright 4. In the area between the uprights 22 and the yoke 30 of the slide 20 and above the surface 31 opposite the base 3 of the forging II? housing the coupling bar 33 constituted in the exemplary embodiment of a rectangular hollow section. When during tightening the slide 20 is pushed in the representation of FIG. 2 and 3 to the left, the gap between the yoke 30 and the forging II decreases, and the tie bar 33 is pressed evenly against the forging II and the frame post 4. Thanks to the arrangement with large surface, it is obtained a very stable connection, while the adjacent panels are aligned in one plane. In the zosoa.terminale of the forging II opposite the post 4? a projection extending at least above one of the sides 13 of the arrow is provided, which? consisting of a flat bar 35 protruding above both sides 13 and which can be loosened with a tool.

La barra piatta 35 ? situata vicino alla superficie IO del saettone 5, la sua direzione longitudinale si estende trasversaliente alla direzione longitudinale del saettone 5. La barra piatta 35 si trova, corse mostra la fig. 3, guardando la direzione di spostamento della slitta 20, al di fuori della superficie del cuneo 16, si trova per? cos? vicina a questa, che se la ^slitta 20 viene spostata nel senso della disconnessione dell'accoopia-?ento in maniera tale che la superficie 26 della slitta rimanga permanentemente a contatto con la superficie del cuneo 16, la barra piatta 35 agguanta nell'incavo 29 e si dispone^ sulle superfici di delimitazione 36 e 37 in modo che si abbia un contemporaneo contatto ancora tra la superficie 26 e la superficie del cuneo 16. In questa posizione la superficie interna del giogo 30 presenta una distanza dalla superficie 3? del pezzo fucinato II che ? maggiore della altezza della barra 33 impiegata come pezzo di accoppiamento, inoltre nel caso che il pannello I sia messo verticalmente, dove quindi normalmente la base 3 sia estende verticalmente e il saettone 5 orizzontalmente, la slitta 20 viene assicurata, grazie alla disposizione discussa a contatto della barra piatta 35 e della superficie del cuneo 16, contro un rovesciamento attorno ad un asse corrente parallelamente alla direzione longitudinale del saettone 5, cos? che in questa posizione la barra 33 pu? essere facilmente infilata nell'intercapedine tra i montanti 22 e la slitta, senza che sia richiesto di tenere fissa in questa operazione la slitta con la mano, e senza il .pericolo che, se la barra 33 urta durante la penetrazione contro la slitta, che la successiva operazione di penetrazione venga compromessa o impedita- La barra piatta 35 costituisce un arresto di fine corsa asportabile per il movimento di spostamento della sLitta 20 lungo la superficie del cuneo 16. The flat bar 35? located near the surface 10 of the arrow 5, its longitudinal direction extends transversely to the longitudinal direction of the arrow 5. The flat bar 35 is located, as shown in FIG. 3, looking at the direction of movement of the slide 20, outside the surface of the wedge 16, is found for? cos? close thereto, that if the slide 20 is moved in the direction of the coupling disconnect in such a way that the surface 26 of the slide remains permanently in contact with the surface of the wedge 16, the flat bar 35 grabs into the recess. 29 and is arranged on the delimiting surfaces 36 and 37 so that there is a simultaneous contact again between the surface 26 and the surface of the wedge 16. In this position the internal surface of the yoke 30 has a distance from the surface 3? of the forging II which? greater than the height of the bar 33 used as a coupling piece, moreover in the case that the panel I is placed vertically, where therefore normally the base 3 extends vertically and the arrow 5 horizontally, the slide 20 is secured, thanks to the arrangement discussed in contact of the flat bar 35 and of the surface of the wedge 16, against an overturning around a running axis parallel to the longitudinal direction of the arrow 5, so? that in this position the bar 33 can? be easily inserted into the gap between the uprights 22 and the slide, without the need to keep the slide fixed with the hand in this operation, and without the danger that, if the bar 33 hits during penetration against the slide, that the subsequent penetration operation is compromised or prevented. The flat bar 35 constitutes a removable limit stop for the displacement movement of the slide 20 along the surface of the wedge 16.

Nell'altra direzione di spostamento, quindi nel caso di spostamento della slitta 20 verso il montante 4, quest'ultimo costituisce l^altro arresto di fine corsa in caso manchi la barra 33? Sul lato del pezzo fucinato II opposto al montante 4 e vicino alle superfici laterali del montante 5 che corrono a 90? rispetto alla base 3 ? fissata rispettivamente una lamiera 38, la eguale presenta un bordo 39 ripiegato verso l'alto, che si estende circa a 90? rispetto al piano delle superfici laterali 13-Ambedue le lamiere 38 potrebbero essere fissate immediatamente a contatto delle superfici laterali 13 e non dovrebbero sporgere al di sopra del lato posteriore 10 del saettone 5; nell'esempio esecutivo le due lamiere sono collegate assieme, tuttavia mediante un giogo 40, esse sono costruite quindi con il giogo 40 come parte ripiegata, per semplificare la fabbricazione. In the other direction of displacement, therefore in the case of displacement of the slide 20 towards the upright 4, the latter constitutes the other end stop in the event that the bar 33 is missing? On the side of forging II opposite the 4 post and near the side surfaces of the 5 post which run at 90? compared to base 3? respectively fixed to a sheet 38, the same one has an edge 39 folded upwards, which extends about 90? with respect to the plane of the side surfaces 13-Both sheets 38 could be fixed immediately in contact with the side surfaces 13 and should not protrude above the rear side 10 of the arm 5; in the executive example the two sheets are connected together, however by means of a yoke 40, they are therefore constructed with the yoke 40 as a folded part, to simplify manufacturing.

Il giogo 40 si trova sul lato psteriore IO del saettone 5. Il lato ripiegato 39 presenta sulla sua estremit? rivolta verso il pezzo fucinato II solamente una piccola distanza dal lato posteriore del saettone 5, questa distanza aumenta poi, come fig. 3-Nella -sua zona terminale 41 opposta al pezzo fucinato II, il bordo 39 ripiegato si evolve ancora solamente con una piccola angolazione rispetto alla direzione longitudinale del saettone 5In questa zona 41 del saettone, la sua distanza dal giogo 40 ? cos? dimensionata che la slitta 20, se non viene richiesta per il serraggio di una barra 33 e se i pannelli devono essere accatastati l'uno sopra l'altro, pu? essere bloccata con le sue sporgenze 24 che entrano nella presa del bordo 39, mentre grazie all'effetto cuneo, provocato dal segmento del bordo 41 che corre con una piccola inclinazione rispetto alla direzione longitudinale del saettone 5, il giogo 30 della slitta viene trascinato verso il giogo 40. Per facilitare questo bloccaggio, la superficie piana 26 non si estende fino alla estremit?,destra della slitta 40 della fig. 2 e 3, bens? passa poco prima con uno spigolo 44 in una zona 45, dove la distanza dal giogo 30 della slitta aumenta nuovamente. In questo modo viene facilitato lo spostamento della slitta nella zona marginale 41 e il bloccaggio della slitta 20 nella posizione di fuori esercizio in basso. The yoke 40 is located on the rear side 10 of the arrow 5. The folded side 39 has on its extremity? facing the forging piece II only a small distance from the rear side of the arrow 5, this distance then increases, as fig. 3-In its terminal zone 41 opposite the forging piece II, the folded edge 39 still evolves only at a small angle with respect to the longitudinal direction of the strut 5 In this region 41 of the strut, its distance from the yoke 40? cos? dimensioned that the slide 20, if it is not required for the clamping of a bar 33 and if the panels have to be stacked one on top of the other, can? be locked with its projections 24 entering the grip of the edge 39, while thanks to the wedge effect, caused by the segment of the edge 41 which runs with a small inclination with respect to the longitudinal direction of the arrow 5, the yoke 30 of the slide is dragged towards the yoke 40. To facilitate this locking, the flat surface 26 does not extend to the right end of the slide 40 of FIG. 2 and 3, but? it passes a little earlier with an edge 44 in a zone 45, where the distance from the yoke 30 of the slide increases again. This facilitates the displacement of the slide in the marginal region 41 and the locking of the slide 20 in the lower out of operation position.

L'altezza del saettone 5 deve essere dimensionata, con riferimento alla grossezza del giogo 40 e del giogo 30 della slitta, in maniera che la superficie esterna 50 della slitta opposta alla base 3 in posizione ribassata, la quale ? rappresentata in fig. 3 con punti e linee, non sporga al di sopra del lato posteriore del pannello I formato mediante i segmenti di parete dei montanti 4 opposti alla base 3, cos? che non venga impedito l'accatastare dei pannelli. La slitta pu? essere portata dalla posizione di serraggio rappresentata in fig. 2 e 3 nella posizione di fuori esercizio agendo in modo che la slitta 20 venga mossa innanzitutto nelle fig. 2 e 3 verso destra, in ?odo che venga allentato il serraggio e possa essere allontanata la barra 33? e che poi la slitta possa essere abbassata e cio? avvicinata alla base 3 di ima quantit? per cui la barra piatta 35 non urti con le sporgenze 24 della slitta. Queste sporgenze 24 entrano poi nella presa del bordo ripiegato 39 delle laniere 38, in nodo da guidare l'ulteriore movimento della slitta verso destra nelle fig. The height of the strut 5 must be dimensioned, with reference to the thickness of the yoke 40 and of the yoke 30 of the slide, so that the outer surface 50 of the slide opposite the base 3 in a lowered position, which? represented in fig. 3 with dots and lines, does not protrude above the rear side of the panel I formed by the wall segments of the uprights 4 opposite the base 3, so? that the stacking of panels is not prevented. The sled can? be brought from the clamping position shown in fig. 2 and 3 in the out of operation position by acting so that the slide 20 is moved first of all in figs. 2 and 3 to the right, so that the clamping is loosened and the bar 33 can be moved away. and then the sled can be lowered and what? approached to base 3 of a quantity? so that the flat bar 35 does not collide with the projections 24 of the slide. These projections 24 then enter the grip of the folded edge 39 of the wool sheets 38, so as to guide the further movement of the slide to the right in FIGS.

2 e 3. Finch? la barra piatta 35 risane nel suo posto, la slitta 20 non pu? ?ssere rimossa dal pannello, essa risulta collegata quindi con il pannello in maniera che non possa andare p?rsa. Se la slitta 20 deve essere cambiata, per esempio per lavori di riparazione, allora viene tolta la barra piatta 35, per esempio mediante allentamento di una spina elastica, e la slitta 20 pu? essere portata fuori della presa con il pezzo fucinato II senza collisione con la laniera 38 e quindi pu? essere allontanata dal pannello mediante spostamento lungo la superficie del cuneo 16, poich? tra l'estremit? della superficie del cuneo 16 e il bordo 39 che funge da guida ? presente una sufficiente intercapedine quando viene rimossa la barra piatta 35. 2 and 3. Finch? the flat bar 35 restores in its place, the slide 20 cannot? be removed from the panel, it is therefore connected to the panel so that it cannot go p? rsa. If the slide 20 is to be changed, for example for repair work, then the flat bar 35 is removed, for example by loosening a spring pin, and the slide 20 can be removed. be taken out of the socket with the forging II without collision with the wool 38 and therefore can? be moved away from the panel by moving along the surface of the wedge 16, since? between the extremity? of the surface of the wedge 16 and the edge 39 which acts as a guide? there is a sufficient gap when the flat bar 35 is removed.

La slitta 20 presenta sul lato esterno dei suoi due montanti 22, quindi sulle sue superfici laterali nella rappresentazione delle fig. 2 e 3, sulla sua estremit? sinistra e destra rispettivamente una costola 55 estendentesi ad angolo retto rispetto al piano della cassaforma, la quale permette di muovere la slitta 20 mediante colpi di martello nella posizione di serraggio e nella posizione di allentanente. Queste costole 55 oppure superfici su cui battere presentano una grande distanza dalle parti adiacenti della tavola per casseforme I e si estendono, come mostrato in fig. 4, fino in prossimit? della superficie del nucleo fornata mediante le sporgenze 24, cos? che la slitta pu? essere spostata mediante colpi di martello, bene e senza disturbo per causa di parti adiacenti. Nell'esempio esecutivo la slitta 20 presenta misurando perpendicolarmente al piano per casseforme un'altezza di circa IO c?.; poich? le figure 2, 3 e 4 sono in scala, possono essere ricavate le restanti-misure del disegno. Al posto del binario di guida 39"sp?rgente dalla parete laterale del saettone 5, pu? essere incavata nella parete laterale del saettone una corrispondente guida, in cui si incastrano le sporgenze 24 della slitta 20. In questo caso, finch? questa guida incavata sfocia nella superficie superiore del saettone, la slitta 20 pu? essere forgiata non in forma di U con ?stremit? libere, ma come rettangolo chiuso. Nella posizione ribassata, la superficie interna superiore del giogo 30 della slitta 20 si trova nei punti 57 e 58 sul lato superiore del saettone55, cos? che la slitta 20 in questa posizione viene fissata con sicurezza nei tre punti 44, 57 e 58 grazie all'effetto di cuneo dello smusso 45. Le superfici 16 e 26 situate una vicino all'altra e che durante il serraggio scivolano una sopra l'altra risultano inclinate rispetto.alla superficie 31 dell'angolo di cuneo 60 richiesto per il serraggio, come appare per la superficie 16 in fig. 3. Le superfici 16 e 26 presentano inoltre una inclinazione posta perpendicolarmente all'angolo di cuneo 60 con un angolo 61 rispetto alla superficie 31? il quale, come mostrato in fig. 4, vale circa 10?. La direzione di questa inclinazione si estende, come rappresentato in fiG. 4, in maniera tale che durante il serraggio del collegamento a cuneo i montanti 22 della slitta 20 sono tirati verso l'interno, poich? almeno una conu ponente di ferza diretta verso l'interno agisce sulle estremit? del sontanti. La base per casseforme 3 ? costituita in modo noto da un pannello di legno compensato spesso 2 CB,, ma anche la sporgenza 106 del profilato cavo 4 visibile in fig. 5 ha un'altezza di 2 cu,, cos? che la base 3 risulta pretetta nel campo della sua superficie frontale da tutte le parti mediante la sporgenza 106, senza che questa sporgenza 106 si estenda al di sopra della superficie 108 della base 3* La base 3 viene sostenuta rae-i diante il tratto di parete del profilato cavo 4 qui indicato come sagmento interno H O. Le fiigure 6 e 7 mostrano la costituzione del pannello nella zona dei fori 112, i quqli servono per il passaggi? di bulluni di ancoraggio, ogni foro 112 ? situato in un manicotto di plastica 114 ed ? sagomato conicamente, cio? ? pi?.stretto nella zona della superficie superiore. Nella zona del manicotto di plastica ??4, risultano forati sia il segmento interno IIO della parete del profilato cavo 4 e sia il segmen-to esterne 116 situato parallelamente al precedente, e dopo aver ripiegato verso l'alto il bordo delle cavit? II8 e 119 che cos? si sono forcate, ? stato inserito nell?interno del profilato cavo 4 un manicotto di sesterno di acciaio,e i bordi 121 e 122 delle cavit? 118 e 119 sono stati spinti sulle estremit? 123 e ?? 124 del manicotto di sostegno 120 cos? da trovarsi sulla superficie interna del manicotto di sostegno. Le estremit? 123 e 124 sono allargate rispetto al restante diametro del manicotto di sostegno in maniera tale che la superficie interna della parte flan? giata dei bordi 121 e 122 sia allineata con la superficie interna 126 del manicotto di sostegno 120 nella sua zona non allargata. The slide 20 has its two uprights 22 on the external side, therefore on its lateral surfaces in the representation of figs. 2 and 3, on its extremity? left and right respectively a rib 55 extending at right angles to the plane of the formwork, which allows the slide 20 to be moved by hammer blows into the clamping position and the loosening position. These ribs 55 or striking surfaces have a large distance from the adjacent parts of the formwork board I and extend, as shown in FIG. 4, up in the vicinity? of the surface of the core provided by the projections 24, so? that the sled can? be moved by hammer blows, well and without disturbance due to adjacent parts. In the embodiment of the embodiment, the slide 20 has, by measuring perpendicular to the plane for formwork, a height of approximately 10 cm; since? Figures 2, 3 and 4 are to scale, the remaining measurements of the drawing can be obtained. Instead of the guide rail 39 "protruding from the side wall of the rocker 5, a corresponding guide can be recessed in the side wall of the rocker, in which the projections 24 of the slide 20 fit together. In this case, as long as this guide hollowed out into the upper surface of the bolt, the slide 20 can be forged not in the shape of a U with free ends, but as a closed rectangle. In the lowered position, the upper inner surface of the yoke 30 of the slide 20 is located in the points 57 and 58 on the upper side of the saettone55, so that the slide 20 in this position is securely fixed at the three points 44, 57 and 58 thanks to the wedge effect of the chamfer 45. The surfaces 16 and 26 located close to each other and that during tightening they slide one over the other and are inclined with respect to the surface 31 of the wedge angle 60 required for tightening, as appears for the surface 16 in Fig. 3. The surfaces 16 and 26 also have an inclination action placed perpendicular to the wedge angle 60 at an angle 61 with respect to the surface 31? which, as shown in fig. 4, is worth about 10 ?. The direction of this inclination extends, as represented in fig. 4, in such a way that during the tightening of the wedge connection the uprights 22 of the slide 20 are pulled inwards, since? at least one conu ponent of ferza directed towards the inside acts on the extremities? of the sontanti. The formwork base 3? constituted in a known way of a thick plywood panel 2 CB, but also the projection 106 of the hollow section 4 visible in fig. 5 has a height of 2 cu ,, cos? that the base 3 is pretended in the range of its front surface on all sides by the projection 106, without this projection 106 extending above the surface 108 of the base 3. wall of the hollow section 4 indicated here as internal sagmento HO. Figures 6 and 7 show the constitution of the panel in the area of the holes 112, which are used for the passage? of anchor bolts, each hole 112? located in a plastic sleeve 114 and? conically shaped, that is? ? tighter in the upper surface area. In the area of the plastic sleeve 4, both the inner segment IIO of the wall of the hollow section 4 and the outer segment 116 located parallel to the previous one are perforated, and after having folded up the edge of the cavities II8 and 119 what is it? have they forked,? a steel outer sleeve has been inserted inside the hollow section 4, and the edges 121 and 122 of the cavities 118 and 119 were pushed on the ends? 123 and ?? 124 of the support sleeve 120 cos? to be on the inner surface of the support sleeve. The extremities 123 and 124 are enlarged with respect to the remaining diameter of the support sleeve such that the internal surface of the flan part? of the edges 121 and 122 is aligned with the inner surface 126 of the support sleeve 120 in its non-enlarged region.

Il manicotto di plastica 114 si trova in quella zona che si estende dal bordo flangiato 122, risulta esternamente cilindrico e il suo diametro esterno ? cos? dimensionato, che esso si trova a contatto del manicotto di sostegno e anche a contatto dei bordi flan#* giati ?2? e 122. Anche l?estremit? esterna del manicotto di plastica che si trova in fondo in fig. 6 risulta ancora sostenuta, come mostrato nel disegno, e cio? sul bordo fl&ngiato 121. I bordi 121 e 122 delle cavit? 118 e 119 entrano cos? nella zona della estremit? 123 e 123 del manicotto di sostegno 120 nella intercapedine tra il manicotto di sostegno e il manicotto di plastica 114. The plastic sleeve 114 is located in that area which extends from the flanged edge 122, is externally cylindrical and its external diameter? cos? dimensioned, that it is in contact with the support sleeve and also in contact with the flange edges # * gated? 2? and 122. Also the extremity? of the plastic sleeve at the bottom of fig. 6 is still supported, as shown in the drawing, and that is? on fl & ngiate edge 121. The edges 121 and 122 of the cavities 118 and 119 enter cos? in the area of the extremity? 123 and 123 of the support sleeve 120 in the gap between the support sleeve and the plastic sleeve 114.

Il manicotto di plastica 114 ? pi? lungo della,distanza tra il segmento interno H O del profilato cavo e il segmento estern o 116, e ternina cio? con la sua estremit? superiore ;i.n fig. 6 esattamente nel piano della superficie 108. La base 3 presenta nella zona del manicotto di plastica 114 una fresatura 128 aperta verso il bordo della,base stessa, e il segmento terminale 129 del aanicott? di plastica 114 disposto nella zona della base 3 presenta una tale sezione, che esso riempie completamente questa fresatura almeno nella zona della superficie 108. Ad una certa distanza dalla superficie 108, il manicotto di plastica presenta una flangia 131 sporgente, la quale con il suo late 132 opposto alla superficie 108 poggia sul segmento interno H O del profilato cavo, mentre sul lato interno 133 della flangia 131 ? sistemata la base 3 mediante una spalla 138 ottenuta con fresatura di un incavo 136 nel lato posteriore 137 della base stessa. Come appare nella figura 7, la flangia 131 ?anca solamente l? dove il manicotto di plastica 114 si trova con un lato diritto 135 immediatamente a contatto della sporgenza 106 del profilato vuoto 4 che serve per la protezione della superficie frontale della base 3? Grazie alla flangia 131 che risulta fissata tra la spalla 133 della base 3 e il segmento interno IIO del profilato vuoto, il manicotto di plastica 114 non pu? andar perso, pu? tuttavia in caso di necessit? essere facilmente cambiato ed essere fissato sul pannello I. The plastic sleeve 114? pi? long of the distance between the internal segment HO of the hollow section and the external segment 116, and that is to say? with its extremity? upper; i.n fig. 6 exactly in the plane of the surface 108. The base 3 has in the region of the plastic sleeve 114 a groove 128 open towards the edge of the base itself, and the terminal segment 129 of the aanicott? made of plastic 114 arranged in the area of the base 3 has such a section that it completely fills this groove at least in the area of the surface 108. At a certain distance from the surface 108, the plastic sleeve has a protruding flange 131, which with its late 132 opposite the surface 108 rests on the inner segment HO of the hollow section, while on the inner side 133 of the flange 131? the base 3 is arranged by means of a shoulder 138 obtained by milling a recess 136 in the rear side 137 of the base itself. As appears in FIG. 7, the flange 131 is hip only there. where the plastic sleeve 114 is located with a straight side 135 immediately in contact with the projection 106 of the empty section 4 which serves to protect the front surface of the base 3? Thanks to the flange 131 which is fixed between the shoulder 133 of the base 3 and the internal segment IIO of the empty section, the plastic sleeve 114 cannot? get lost, can? however, in case of need? be easily changed and fixed on panel I.

Risulta vantaggioso, se la forma conica del foro del manicotto di plastica 114 si estende lungo l'intera lunghezza oppure come minimo lungo ima consistente parte della lunghezza del manicotto di plastica e se il foro si allarga, soltanto di poco verso l'esterno, che l'angolo al vertice del cono non sia troppo _ grande. Per esenpio il foro conico pu? essere lungo circa 12 era. il suo diametro esturilo valere circa 24 e il suo diametro It is advantageous if the conical shape of the hole of the plastic sleeve 114 extends along the entire length or at least along a substantial part of the length of the plastic sleeve and if the hole widens, only slightly outwards, that the apex angle of the cone is not too large. For example, the conical hole pu? being about 12 was long. its esturilo diameter is worth about 24 and its diameter

Claims

R I V E N D I C A Z I O N I

I. Panel for formwork for concrete walls with a base for formwork and a steel frame that supports it, which has posts extending along the edges of the base and at least a wedge slide located on a transverse beam of the frame, the which presses one end? of a bar that bridges the joint between two adjacent panels against parts of the frame of this panel, being the slit? ta fixed to the frame so that it can be brought into a position, in which it does not protrude above the surface of the frame opposite the "plane of the base, characterized by what the slide (20) sutures (5) are guided in a known manner and have a substantially u-shaped section, the uprights (22) of which carry inwardly extending projections (24), which form with the projections (15) which a wedge connection is offset laterally on the strut (5), and that the strut (5) is lower than the upright of the frame (4) by an amount equal to the thickness of the yoke (30) of the slide (20).

2. 3? M> ells for formwork according to claim I, characterized in that the projections (15) extending laterally to the rail (5) are provided on a plate, which? fixed on the surface (10) of the bolt (5) opposite the plane of the base (3) and that the slide (20) can? be moved along the arrow (5) cos? so that it can come out of the grip of the protrusions (15) of the rod (5) belonging to the wedge connection.

3 Formwork panel according to claim 2, characterized in that the projections (15) extending laterally to the rod (5) form a wedge surface (16).

Formwork panel according to claim 2 or 3, characterized in that projections (41) are provided on the side walls (13) of the rod (5) extending perpendicularly to the plane of the base (3), which in cooperation with projections ( 24) of the slide (20) maintain this in a lowered position, in which it does not protrude above the surface (35) of the frame (4,5) opposite the plane of the base (3).

5 Panel for enclosure according to claim 4, characterized in that guiding surfaces (39) are coated on the lateral walls (13) of the ratchet (5), which guide the slide (20) in the lowered position.

6. Formwork panel according to one of the preceding claims, characterized in that means are provided which for the insertion of the bar (33) connecting adjacent panels into the slide (20) hold it in a position which is raised with respect to the lowered position, where the internal height of the slide (20)? greater than the height of the bar section (33)?

7. Panel for safe according to claim 6, characterized in that these means consist of projections (35), which in the raised position grip under a surface (37) of the slide (20).

8. Panel for safe-deposit boxes according to claims 3 and 5 characterized in that between the guides (39) which guide the slide (20) downwards and the wedge-shaped surfaces (16) fastening on the arrow (5) in the direction of movement of the slide (20)? provided an interval (52) which allows a removal of the slide (20) from the arrow (5) and that this interval can? be bridged by means of a removable plate (35) protruding laterally on the bolt (5) so that it is no longer? is it possible to remove the slide (20) from the rocker (5)?

9 Palmello for safes according to one of the preceding claims, characterized in that the slide (20) has its two ends on arabes. respectively a rib (55) extending perpendicularly to the plane of the base (3)? what can? be used core and surface on which to beat.

10. Safe panel for concrete walls with a base for safe and a steel frame that supports it, which has along the edges of the base of the uprights and at least a wedge slide located near a transverse beam of the frame, the which presses against parts of the frame of this panel. or one end? of a bridging bar the joint between two adjacent panels and which has a substantially u-shaped section that embraces the rod, the uprights of which form a wedge connection with the walls located on the rod, particularly according to one of the preceding claims characterized by the fact that the surfaces of the wedge (16, 26) of the wedge connection extend perpendicular to the angle of the wedge, so inclined? that the uprights (22) of the slide (20) are pulled towards when tightening the wedge connection

1 'inside.

11. Panel for safe-deposit boxes according to claim 10 characterized in that the inclination of the surfaces of the wedge (16, 26) perpendicular to the angle of the wedge is approximately 10 °.

12. Formwork panel In particular according to one of the preceding claims with a steel frame in which? provided for a drilling through the steel frame and arranged in a sleeve for an anchor bolt crossing the wall, characterized in that the hole (112)? conical and what? provided in a plastic sleeve (114, 14.0), which crossing the frame (2) of the panel (I)? fixed in it.

13- Formwork panel according to claim 12, characterized in that the plastic sleeve (114) has a flange (131) for its fastening, which grabs behind a projection (138) of the formwork base (3)?

14. Formwork panel according to claim 13 characterized in that this projection (138)? formed by means of a notch (136) on the surface (137) of the base (3) facing the frame (2) and that the flange (131) is fixed at a minimum on the part of its perimeter between the base (3) and the frame (2).

Formwork panel according to one of claims 12 to 14, characterized in that the largest diameter of the hole (112) is located at its end. opposite the base (3)?

16. Panel for safe? according to claim 15 characterized in that the plastic sleeve (114? '140)? surrounded inside the frame (2) by a support sleeve (120).

17 Formwork panel according to claim 16 characterized in that the support sleeve (120)? held by flanging the edges (121, 122) of the recesses (118, 119) in the walls (HO, 116) of the empty frame section.

18. Formwork panel according to claim 17 characterized in that the diameter of the support sleeve (120)? enlarged at its ends? (123, 124) and that the flanged edges of the recesses (118, 119) provided in the walls (HO, 116) of the frame grab into the gap between the ends? (123, 124) of the support sleeve (120) and the outer surface of the plastic sleeve (114, 140).

19. Formwork panel according to one of claims 12 to 18, characterized in that the base (3) in order to accommodate one of the anchoring bolts has a milling starting from the edge of the base (3) and that the end? (129) of the plastic sleeve (114, 140) adjacent to the base plane (108) completely fills this groove.

20. Formwork panel according to claim 12, characterized in that the plastic sleeve (140) has a projection (142), which grips it in a groove (144), and what? provided in the base (3) at a certain distance from the surface of the base (108) and the rear side (137).

21. Formwork panel for concrete walls with a steel frame supporting a formwork base, in which? provided for a drilling through the steel frame and arranged in a metal sleeve for an anchor bolt crossing the wall, characterized by the fact that the hole in the metal sleeve widens with a slight conicity. towards its extremity? opposite to the base and what? coated with a layer of plastic.

22. Formwork panel for concrete walls with a steel frame supporting a formwork base, in which? a cylindrical drilling through the frame is provided and located in a metal sleeve for an anchor bolt passing through the wall, characterized in that a plastic sleeve with a conical hole is fixed in the hole

Panels) for formwork for walls

of concrete with wedge connections the invention relates to a formwork panel for concrete walls with a formwork base and a steel frame supporting it, which has frame uprights along the edges of the base and transverse bolts connecting them, being provided with wedge-shaped connections on the frame which use a bar bridging the joint between two adjacent panels, which is pressed on both ends. by means of the wedge slide against canvas parts 10 of these panels for fixing and aligning adjacent panels, the wedge slide being fixed on the frame so that it can be brought into a position in which during the transport of the panels it does not protrude above the surface of the frame opposite the plane of the base. In a known panel corresponding to DE-OS 27 57 450.1, the frame contains a particular beam segment which, extending pa. rectly to the connecting bar and moved away from a transverse bolt, it is welded to a frame upright and protrudes from this in the plane of the frame towards the inside, where the end? of this beam segment? free. About this if? beam chin the wedge slide? reported in a way that it can? be overturned on the end? free of the beam around an axis that runs vertically with respect to the transport direction of the slide above the free front edge of the beam, so? that the sled no longer protrudes? above the surface of the frame opposite the plane of the base. We tend to this result so that the panels can be comfortably placed one on top of the other during transport to the construction site.

However, this known panel has the disadvantage that, in order to obtain the wedge connection, a particle is required. lare beam that must be welded on the frame with free front surface and that the stability? of this segment of beam fixed on the upright of the frame only with one side is not particularly high, so? that the connecting bar between two adjacent panels fixed on these beam segments by means of the wedge slide cannot? to withstand too large torsional moments on the panels and consequently the adjacent panels cannot often be brought exactly to the plane of the formwork by simply tightening the wedge connections. For reasons of stability, these beam segments dev? no be fixed on the frame in a position the pi? adjacent as possible to a transverse thunderbolt. However, this implies that the wedge slide only on its end? opposite the surface of the base has a surface on which to act with the hammer while tightening the slide, since? a surface provided for such action between the beam segment and the transverse bolt? reachable by the hammer only with great difficulty? due to the small gap between the beam and the thunderbolt. Furthermore, in the traditional panel, the wedge slide? consisting of a closed part having four walls, on whose internal section they grab both the connecting bar and the beam segment, which has the consequence that in the traditional panel the load-bearing segment consists only of a flat bar facing the super gall of the wedge with the end? angled inwards, which again negatively affects the stability of the connection a.cuneo.

The task of this invention? to avoid the drawbacks of the traditional panel.

This task is accomplished with the fact that the wedge slide is arranged in a different way. note on a transverse bolt located in the area of the wedge connection and which does not actually take the shape of u, the uprights of which carry inwardly extending projections, which form a wedge connection with the parts located laterally to the bolt and what the saettone? pi? low of the upright of the frame of the quantity? corresponding to the thickness of the yoke of the slide.

This embodiment of the invention has the advantage that a transverse strut of the frame is used for the wedge connection, which exhibits stability. substantially larger than the beam segment of the traditional panel which? welded only for one side, cos? that ajt through this wedge connection much more twisting movements can be exerted? large, while adjacent panels can be forced onto the formwork plane by simply tightening this wedge connection. However, even the panel relating to the invention has the advantage that the slide during the transport of the panels can? be brought into a position in which it does not protrude above the surface of the fabric opposite the plane of the base, since? the transverse thunderbolt? pi? small of the upright of the telalo in the quantity? corresponding to the thickness of the yoke of the slide. This arrangement of the wedge-shaped connection mediately on the arrow also allows to arrange on the slide surfaces on which to act with the hammer during tightening, not only in the area of its yoke, but also in the area of its yoke. also on its lateral surfaces, therefore in the immediate proximity of the surfaces of the wedge. Since? the sled? applied on a transverse arrow so that it can move, pu? simply prevent the slide from falling off the panel into the transport position.

In an embodiment relating to the invention, the protruding parts placed laterally to the rod are provided close to a plate which is fixed on the surface of the rod opposite the plane of the base and the slide can be moved along the arrow by a quantity? such that it can? exit from the socket of the protrusions of the arrow which are used for the wedge connection.

In this regard, the parts protruding laterally from the arrow or the protrusions of the extremity? of the uprights of the slide which are inward or both parts form wedge-shaped surfaces.

In an embodiment relating to the invention, protrusions are provided on the lateral walls of the rod running perpendicular to the plane of the base, which in conjunction with protrusions on the inner side of the uprights of the teng? no fixed this in a lowered position, in which it can? be brought the sled, if it is moved by one how many, t? such that it does not grab more? in those protrusions of the arrow that belong to the wedge connection and in which it is lowered so much that it does not protrude more? above the surface of the frame opposite the plane of the base, so? that the rear side of the frame forms a flat support surface for the panels which are placed on top during transport. For an embodiment relating to the invention guiding surfaces which guide the slide from the high position to the p? low position and in the low position fix by means of the wedge effect.

For an embodiment relating to the invention, means are provided which, in order to allow inserting the bar with the? sled together with adjacent panels in the sled, hold the sled in a raised position relative to the lowered position, in which the internal height of the sled? pi? greater than the height of the bar section.

This fact has the advantage that it is very simple to insert the connecting rod into the slide. If such means are not provided, the slide which is movable in its internal height does not remain alone in this raised position, since the insertion of the connection bar takes place with the panel, held vertically and the slide therefore within its mobility? spills downward in some inclined position, so? that during the insertion operation the slide must be held in its raised position manually. There? this is obviated with the embodiment relating to the invention. These means which fix the slide in the raised position can consist for example of protrusions which in the raised position grab underneath a surface provided on the slide and can grab, for example, also under the front surface of the ends. of the uprights of the slide.

In order to facilitate a replacement of the slide,? between the guides that make the slide slide downwards and the surfaces of the wedge fixed on the strut in the direction of movement of the slide an interval that allows an extraction. of the slide by the guides provided on the strut within this range. In this regard, this interval can? be closed by means of a removable plate protruding laterally from the arrow, so? that with this plate inserted it is no longer? It is possible to remove the slide from the bolt. The plate protrudes above the lateral surfaces of the bolt as much as the protrusions fixed on the bolt and belonging to the wedge connection protrude.

In an embodiment relating to the invention, the slide pr? feel on both its ends? a rib extending for pendicular to the plane of the base, which can? be used as a surface to hit with the hammer when tightening the slide.

Further characteristics result from the following description of an embodiment of the invention in relation to the claims and the drawing.

They indicate :?

in fig. 1 a simplified representation of a formwork panel,

in fig. 2 detail II of fig. 1 on a larger scale in fig. 3 a view according to arrow III in fig. 2,

in fig. 4 a section along the line IV-IV of fig. 3. A formwork panel 1 has a steel frame 2, which in its turn? consisting of 4 frame uprights running along the edges of the formwork base formed by a single piece 3 and transversal struts 5? which support in the relevant central area of the formwork base. In the area of the extremities? of each arrow 5? provided a wedge connection to connect the adjacent panels, which is not? represented in fig. 2, but it? in the other figures.

As shown in Figs. 3 and 4, the transverse beam 5 of the rear part 7 of the base for formwork 3 has a height of more? smaller than that of the upright for frame 4. On the rear side 10 of the transverse rod 5, therefore on the side not adjacent to the base 3? welded a forging 11 which? also connected by welding to the frame upright 4; it ? consisting of a plate 12 located near the saett? 5, which has exactly the same width as the arrow 5 and the plate 12 has protruding parts which extend above the plane of the lateral surfaces 13 of the transverse rod 5, the internal part of which, hence the. part facing the base 3, each time has a wedge-shaped surface 16, the distance of which from the base 3 increases as it moves away from the edge of the panel. deduce from fig. 3. This wedge-shaped surface 16 extends along the entire length of the protruding parts 15 and these in turn are slightly larger. court of the raajs sima length of the forged part 11, as shown in fig. 2.

The wedge connection further has a slide 20 which? constituted by a jet normally formed in a U shape. The uprights 22 of the slide 20 have on their ends? free of the inwardly extending projections 24, the opposite surface 26 of which at the base 3 interacts with the wedge surfaces 16 of the protruding parts 15 and forms the wedge connection with these. This surface 26 then, when the wedge connection? tense,? adjacent to the wedge-shaped surface 16. The projections 24 extend for the entire length of the slide 20 which appears substantially rectangular in the side view of the ???? 3; ; la: part? 28 facing the base 3 of the slide 20 presents for? in. its terminal area opposite to the upright 4 a recess 29, whose task will come? explained later.

In the area between the uprights 22 and. the yoke 30 of the slide 20 as well as of the side 31 opposite the base 3 of the forged part 1 1 can? a coupling piece 33 constituted in the exemplary embodiment of a rectangular hollow section to be fixed. When the slide 20, in the representation of Figures 2 and 3, is pushed to the left, the gap between the yoke 30 and the forged part 11 is reduced. Surface it. Is 31 of the forged part 11 exactly on the plane of the wall 35 opposite the base 3 of the upright 4? cos? that during the tensioning of the wedge connection the coupling piece 33 is uniformly pressed against the forged part 11 and the frame post 4. Thanks to the arrangement? ne with a large surface a very stable connection is obtained.

On the end area opposite the frame upright 4 of the forged part 1 1? provided a protrusion extending as a minimum above one of the sides 13 of the thunderbolt, which? formed by a flat bar 35 which protrudes above both sides 13 and which can? be loosened with a tool. The flat bar 35? adjacent to the surface 10 of the arrow 5? its longitudinal direction extends transversally to the longitudinal direction of the arrow 5. Is the flat bar 35 located, as shown in FIG. 3? looking at the direction of travel of the slide 20, outside the wedge surface 16, it is found for? cos? close thereto, that if the slide 20 is moved in the direction of the disconnection of the wedge coupling in such a way that the surface 26 of the slide remains constantly in contact with the wedge surface 16, the flat bar 35 grabs into the recess 29 and is arranged on the delimiting surfaces 36 and 37 so that there is a temporary contact again between the surface 26 and the wedge-shaped surface 16. In this position the internal surface of the yoke 30 has a distance from the surface 31 of the part forged 11 which? greater than the height of the bar 33 used as a coupling piece, furthermore in the case that the panel 1 is placed vertically, where therefore the base 3 normally extends vertically and the arrow 5 horizontally, the slide 20 is secured, thanks to its disposition in contact with the flat bar 35 and the wedge-shaped surface 16, against an overturning around a current axis. parallel to the longitudinal direction of the arrow 5, cos? that in this position the bar 33 can? be easily inserted into the gap between the uprights 22d? the slide, without the need to keep the slide fixed in this operation with the hand and without the danger that, if the bar 33 hits during penetration against the slide, the next penetration operation is impaired or prevented. The flat bar 35 constitutes a removable limit stop for the displacement movement of the slide 20 along the wedge-shaped surface 16. In the other direction of displacement, therefore in the case of displacement of the slide 20 towards the upright 4, this is the last one constitutes the other limit stop in case the bar 33 is missing.

On the side of the forged part 11 opposite the upright 4 and close to the side surfaces of the seat 5 which cord at 90? compared to base 3? respectively fixed to a sheet 38 which has an edge 39 bent upwards, extending approximately 90? with respect to the plane of the side surfaces 13. Both sheets 38 could be fastened immediately in contact with the side surfaces 13 and should not protrude a.1 above the rear side 10 of the arm 5; in the embodiment the two sheets are connected together, however by means of a yoke 40, they are then constructed with the yoke 40 as a folded part, to simplify manufacturing. Is the yoke 40 located on the rear side 10 of the saett? ne 5. The folded side 39 has on its extremity? facing towards the forging piece 11 only a small distance from the rear side of the arrow 5, this distance then increases, as shown in Fig. 3. In its terminal region 41 opposite the forged part 11, the folded edge 39 still evolves at only a small angle with respect to the longitudinal direction of the strut 5. In this region 41 of the strut, its distance from the yoke 40? cos? dimensioned that if the slide 20 is not required for the clamping of a bar 30 and if the panels are to be stacked one above the other, it can? be locked with its projections 24 entering the grip of the edge 39, while thanks to the wedge effect caused by the segment of the edge 41 which runs with a small inclination with respect to the longitudinal direction of the arrow 5, the yoke 30 of the slide is dragged towards the yoke 40. To facilitate this locking, the flat surface 26 does not extend to the end. right of the slide 40 of fig. 2 and 3? bens? it passes a little earlier with an edge 44 in a zone 45, where the distance from the yoke 30 of the slide increases again. In this way, the movement of the slide in the marginal area 41 and the locking of the slide 20 in the out-of-operation position is facilitated.

The height of the arrow 5 must be dimensioned, with reference? to the thickness of the yoke 40 and of the yoke 30 of the slide, so that the outer surface 50 of the slide opposite the bottom 3 in a lowered position, which? represented in fig. 3 with dots and lines, does not protrude above the rear side of the panel 1 formed by the wall segments of the uprights 4 opposite the base 3, so? that the stacking of panels is not prevented.

The sled can? be brought from the clamping position raja shown in fig. 2 and 3 to the out of operation position by acting so that the slide 20 is first moved, in figs. 2 and 3, to the right, so that the ser beam. the bar 33 can be removed, and then the slide can be lowered and that is? approached the base 3 of a quantity? so that the flat bar 35 does not collide with the projections 24 of the slide. These projections 24 then enter the grip of the folded edge 39 of the sheets 38, so as to guide the further movement of the slide towards the right in Figs. 2 and 3.

Finch? the flat bar 35 remains in its place, the slide 20 cannot? be removed from the panel, it is therefore connected to the panel so that it cannot be lost.

If the slide 20 has to be changed, for example for repair work, then is the flat bar 35 removed? for? evening pious by loosening a spring pin, and the sled 20 can? be taken out of the socket with the forging 11 without collision with the sheet 38 and therefore can? be removed from the panel by moving it along the surface of the wedge 16, since? between the extremity? of the wedge surface 16 and the edge 39 which acts as a guide? there is sufficient space in the cavity when the flat bar 35 is removed.

The slide 20 has on the external side its two uprights 22, therefore on its lateral surfaces in the representation of Figures 2 and 3? on its end? left and right respectively a rib 55 extending at right angles to the plane of the formwork, which allows the slide 20 to be moved by hammer blows into the clamping position and the loosening position. These ribs 55 or striking surfaces have a large distance from the adjacent parts of the formwork board 1 and extend, as indicated in FIG. of the surface of the core formed by the projections 24, so? that the sled can? be moved by hammer blows, well and without disturb. bo due to adjacent parts. In the executive example the

R I V E N D I C A Z I O N I

1. Formwork panel for concrete walls with a formwork base and a steel frame that supports it, which presents along the edges of the base of the frame uprights and transversal struts connecting them, being pr? seen of the gripping wedge connections on the frame which use a bar bridging the joint between two adjacent panels, which is pressed on both ends. by means of the wedge slide against frame parts of these panels for fixing and aligning adjacent panels, the wedge slide being fixed on the frame so that it can be brought into a position in which during the transport of the panels it does not protrude above the surface of the frame opposite the plane of the base, therefore characterized by the fact that the sled. (20)? guided in the known way on a transverse bolt (5) arranged in the area of the awning connection (11,15,16,2) and has a section? essentially u-shaped, the uprights (22) of which have inwardly extending projections (24) which with the laterally protruding parts on the strut (15) form a wedge-shaped connection and by the fact that the saeton (5) ? pi? of the frame upright (4) by a measure equal to the thickness of the yoke (50) of the slide (20).

2. Device according to claim 1, therefore characterized in that the parts projecting laterally (15) on the transverse arrow (5) are provided on a plate which? fixed on the surface (10) of the bolt (5) opposite to the plane of the base (3) and that the slide (20) can? be moved along the arrow (5) cos? so that it can come out of the grip of the protrusions (15) of the rod (5) belonging to the wedge connection.

3. Device according to claim 2, therefore characteristic

raised by the fact that the protruding parts (15) lateral to the arrow (5) form a wedge-shaped surface (16).

4. Device according to claim 2 or 3, therefore characterized in that on the side walls (13) of the arrow (5) extending perpendicularly to the plane of the base (3) there are projections (41), which in cooperation with projections ( 24) of the slide (20) keep it in a lowered position, in which it does not protrude above the surface (35) of the frame (4,5) opposite the plane of the base (3).

5. Device according to claim 4, therefore characterized in that guide surfaces (39) are provided on the side walls (13) of the bolt (5), which wade the slide (20) in the lowered position.

6. Device according to one of the preceding claims, therefore characterized in that means are provided which for the insertion of the bar (33), connecting adjacent panels, into the slide (20) keep it in a position which, with respect to the lowered position is raised, in which the internal height of the slide (20)? pi? greater than the height of the bar section (33). 7. Device according to claim 6, therefore characterized in that these means consist of projections (35) which in the raised position grip under a surface (37) of the slide (20).

8. Device according to claims 3 and 5, therefore characterized in that between the guides (39) which guide the slide (20) downwards and the wedge-shaped surfaces (16) are fixed on the rod (5) in the direction of displacement of the ^ slide (2?)? an interval (52) is foreseen which allows for the removal of the slide (20) from the arrow (5) and that this interval can? be bridged by means of a removable plate (35) protruding laterally on the bolt (5) so that it is no longer? it is possible to remove the slide (20) from the rod (5).

Device according to one of the preceding claims, therefore characterized in that the slide (20) has on both its ends? respectively a rib (55) extending perpendicularly to the plane of the base (3), which can? be used as a surface to hit on.

Two tables of drawings follow

For compliant translation

The invention relates to a formwork panel for concrete walls with a formwork base and a steel frame supporting it, which has frame uprights along the edges of the base and at least one wedge slide guided on a beam of loom, which presses a? extremity of a bar which connects the joint between two adjacent panels against frame parts of these panels and which has a cross section. substantially u-shaped which comprises the frame strut, the uprights of which form a wedge-shaped connection with the parts located on the strut, in particular according to patent. . . . . (patent application P 29 08 339 - 4).

The invention according to the principal patent is therefore improved in that the wedge surface of the wedge connection extends perpendicular to the angle of the inclined wedge so that during the tightening of the connection the struts of the slide are pulled towards the 'internal. With the fact that during the tightening of the connection the uprights of the slide are pulled inwards and therefore against the side surfaces of the strut, the tendency for the uprights to be pushed towards 'the outside. In this way, compared to an embodiment without evolving wedge surfaces as per invention, greater forces on the wedge can be generated at parity. of effort of material, or for the generation of equal forces the sled pu? be sized more? weakly in particular in the area of its yoke. The stability arrangement is greatly improved by the invention.

To tell the truth, the invention can? be advantageously made with the panel disclosed in the main patent, however it can be made. they can also be used wherever the wedge slides described at the beginning are used for fixing bars that connect the joint between two adjacent panels.

The slope of the wedge surface? such that the uprights of the sled are pulled in the direction above the plane of symmetry of the sled, pu? be proportionately small there. In an embodiment related to the invention? predicted that this slope is about 10 ?.

The inclination according to invention of the surfaces of the wedge can? be made for different embodiments of wedge connections. For example, the wedge connection can? have protrusions directed from the uprights of the elitta towards the inside, which then grab with protrusions with wedge-shaped surfaces placed laterally to the arrow or below. In one embodiment where the projections of the uprights of the slide grip into projections which are provided on the underside of the strut, this lower surface facing upwards. base has a distance from the surface of the base with interposed to it which corresponds at least to the portion of clamping possible by means of the connection and the rod of the frame protrudes on its extremity. free, so that? the sled can be moved from this end? free on the strut without widening the uprights of the slide itself.

The invention is not? limited to embodiments in which the uprights of the slide have protrusions directed towards the inside, in other embodiments the uprights of the slide can have a groove evolving according to the angle of the wedge, in which? reported a protrusion deviating laterally from the thunderbolt. Again at least the wall of the groove which comes into contact with the projection during clamping and the wall of the adjacent projection must be inclined perpendicularly to the angle of the wedge so that during the tightening of the connection the uprights of the slide are pulled inwards.

In the drawing ? represented an executive form of the invention? neither.

Fig. 1: shows a simplified representation of a formwork panel, on a small scale without representation of the clamping device.

Fig. 2: shows a vertical view of the clamping device according to the invention in place II of the formwork panel indicated in Fig. 1 without the connecting bar, on a greatly enlarged scale.

Fig. 3s shows a side view of the clamping device according to arrow III in fig. 2 e

Fig. 4: a section of the line IV-IV in fig.3.

A formwork panel 1? consisting of a steel frame 2, which in turn? consisting of 4 frame uprights running along the edges of the formwork base formed by a single piece 3 and transversal struts 5? In the area of the extremities? of each transverse bolt 5? a clamping device is provided for connecting adjacent panels. As shown in Figs. 3 and 4, the transverse arrow 5 with reference to the rear part 7 of the base for formwork 3 has a height of more? smaller than that of the upright for te laio 4. On the upper side 10 of the transverse rod 5, therefore on the side not adjacent to the base 3,? welded a piece ropes born 11 which? also connected, by welding, with the frame mullion 4; it ? consisting of a plate 12 located close to the transverse bolt 5, which has exactly the same width as the bolt 5 and which? constituted in turn by protrusions which extend above the plane of the side surfaces 13 of the arrow 5? while the surface 16 of these projections which? facing the base 3 it evolves in the shape of a wedge, cos? than its. distance from the base 3 increases as you move away from the edge of the panel, how can you? deduce from fig. 3. This surface a. wedge 16 extends along the l? entire length of the projections 1 5 and these in turn are slightly more? short of the maximum length of the forging 1 1, as indicated in fig. 2.

The clamping device has, among other things, a slide 20, which? consisting of a jet normally formed in a U shape.

The uprights 22 of the slide 20 have on their ends? free of the projections 24 extending towards the? internal, the surface 26 of which opposite the base 3 interacts during clamping with the wedge-shaped surfaces 16 of the projections 15, forming the wedge-shaped connection therewith. The ledges 24 you eetend? approximately for the entire length of the slide 20 - which appears in the side view of FIG. 3 - substantially rectangular. In the area between the uprights 22 and the yoke 30 of the slide 20 and above the surface 31 opposite the base 3 of the forging 11? housed the coupling bar 33 constituted in the? example of execution from a rectangular hollow section. When during clamping the slide 20 is pushed - in the representation of figs. 2 and 3 - towards the left, the gap between the yoke 30 and the forging 11 decreases and the coupling bar 33 is pressed evenly against the forging 11 and the frame post 4. Thanks to the arrangement with large surface, it is it achieves a very stable connection, while the adjacent panels are aligned in one plane.

In the end area of the forging 11 opposite the post 4? provided for a projection extending at least above one of the sides 13 of the arrow, which? consisting of a flat bar 35 protruding above both sides 13 and which can? be loosened with a tool. The flat bar 35? located near the surface 10 of the arrow 5? the longitudinal direction of which extends transversely to the longitudinal direction of the arrow 5. The flat bar 35 finds, as shown in Fig. 3 by looking at the direction of movement of the slide 20, outside the surface of the wedge 16, is located for ? cos? close thereto that if the slide 20 is moved in the direction of disconnection of the coupling so that the surface 26 of the slide remains permanently in contact with the surface of the wedge 16, the flat bar 35 grabs into the recess 29 and becomes disposes on the delimiting surfaces 36 and 37 so that there is a simultaneous contact between the surface 26 and the surface of the wedge 16. In this position the internal surface of the yoke 30 has a distance from the surface 31 of the forging 11 which ? greater than the height of the bar 33 used as a coupling piece, moreover in the case that the panel 1 is placed vertically, where therefore normally the base 3 extends vertically and the strut 5 horizontally, the slide 20 there? ensured, thanks to the arrangement discussed in contact with the flat bar 35 and the wedge-shaped surface 16, against overturning about an axis parallel to the longitudinal direction of the arrow 5, thus? that in this position the bar 35 can? be easily inserted into the gap between the uprights 22 of the slide, without the need to keep the slide fixed with the hand in this operation and without the danger that, if the bar 33 hits during penetration into the slide, the subsequent operation of penetration is compromised or prevented, the flat bar 35 constitutes a removable limit switch stop for the displacement movement of the slide 20 along the surface of the wedge 16. In the other direction of displacement, therefore in the case of displacement of the slide 20 towards the upright 4? the latter constitutes the other limit switch stop in case the bar 33 is missing.

The height of the thunderbolt -5? dimensioned in consideration of the thickness of the yoke 30 of the slide so that the outer surface 50 of the opposite slide, at the base 3 in a depressed position, which is represented in fig. 3 with dots and lines, does not protrude above the rear side of the panel 1 formed by the wall segments of the uprights 4 opposite the base 3, so? that the stacking of panels is not prevented.

Finch? the flat bar 35 remains in its place, the slide 20 cannot? removed from the panel, it is therefore connected to the panel so that it cannot be lost. If the slide 20 has to be changed, for example for repair work, then is the flat bar 35 removed? for example, by loosening an elastic pin., and the slide 20 can? be brought out of the socket with the forging 11 and then moved away from the panel 1 by moving along the surface of the wedge 16.

The surfaces 16 and 26 located close to each other and which slide over each other during clamping are inclined with respect to the surface 31 by the wedge angle 60 required for clamping, as appears for the surface 16 in fig. 3. The surfaces 16 and 26 also have an inclination placed perpendicular to the wedge angle 60 with an angle 61 ri. with respect to the surface 31, which, as indicated in fig. 4,? about 10 ?. Does the direction of this inclination extend, as indicated in fig. 4? in such a way that during the tightening of the wedge connection the uprights 22 of the slide 20 are closed. rati inwards, since? at least one component of force directed towards the inside acts on the ends? of the uprights.

R I V E N D I C A Z I O N I

1. Panel for formwork for concrete walls with a base for formwork and a steel frame that supports it, which has along the edges of the base of the frame uprights and at least one wedge slide guided on a strut of the frame, which press one end? of a bar which bridges the joint between two adjacent panels against frame parts of these panels and which has a substantially u-shaped section which includes the frame rod, the uprights of which form with the parts located on the saettone a wedge connection, in particular according to patent. (Patent application P 2909 339.4), therefore characterized in that the wedge-shaped surfaces (16,26) of the wedge connection extend perpendicularly to the angle of the inclined wedge so that during the tightening of the wedge connection the uprights (22 ) of the slide (20) are pulled inwards.

2. Formwork panel according to claim 1, therefore characterized in that the inclination of the wedge surfaces (16,26) perpendicular to the angle of the wedge? of ca. 10 ?.

3. Panel for formwork according to claim 1 or 2, therefore characterized in that the wedge connection (16,26) has projections (24) directed by the uprights of the slide (22) towards the inside.

4. Formwork panel according to claim 3? therefore characterized in that the projections (24) - directed towards the inside - of the uprights of the slide constitute with the projections (15) which protrude laterally on the arrow (5) the wedge-shaped surface.

5. Formwork panel according to claim 3? therefore characterized by the fact that the strut of the frame protrudes freely on one end? and from the fact that between the surface of the arrow (5) facing the base (3) and the surface of the base there is this facing a distance which corresponds at least to the length of clamping possible by means of the wedge-shaped connection (16,26), and to the fact that the projections (24) of the uprights of the slide (22) directed inwards, together with the projections a wedge-shaped surface of the sear; and these protrusions of the sear are arranged on its lower surface facing the base.

Two tables of drawings follow

Formwork panel for

concrete walls_

The invention relates to a formwork panel per part? ti in concrete with a steel frame supporting a formwork base, in which? a hole is provided in a socket which crosses the steel frame for an anchor bolt which crosses the wall. In the panels already? known, the steel frames are replaced by hollow rectangular sections which are arranged along the edge of the formwork base which is not actually a plywood panel and which also support the formwork base by means of transverse and central struts. Along the edge of the formwork base there are only grooves in the form of holes that pass through the base and the wall of the hollow section which supports the base and the opposite wall of the hollow section and which are used to insert the anchor bolts. . Those grooves where no anchor bolts are inserted have to be who? if, before pouring the concrete into it, with a plastic cap or something similar so that? the concrete does not enter the holes and harden. Experience has shown, however, that for various reasons the grooves not occupied by anchor bolts remain open and because you do not have a closing hood by hand either for other reasons.

When the panels are reused, in many cases for the insertion of the anchor bolts the holes must be cleared of the penetrated and hardened concrete with the aid of a drill for concrete, which is not only long and tedious but also disturbs the rapid succession of operations for the reinforcement of the casseforrae. To be honest ? already? I notice that the grooves through the steel frame and the base must be provided a little more? large and that the groove is welded to a sleeve, which prevents the concrete entered from penetrating into the empty internal space of the empty rectangular section of the frame. This way all away does not? the operation of removing a hardened concrete plug in this steel sleeve has been facilitated, but? yes ? made even more? difficult due to the adhesion of the hardened concrete plug to the inner wall of the steel sleeve.

Task of the Invention? to facilitate the removal of the concrete penetrated and hardened in said holes. This task is solved by the present invention due to the fact that the hole? conical and? provided in a plastic sleeve, which by passing through the frame is fixed therein.

Thanks to the conicity? of the drilling and the fact that the sleeve does not? as usual in steel, but? of plastic, the hardened concrete adheres in this hole so? little that the concrete cap can? be removed from the end? of the hole of smaller diameter with the hammer or if necessary with the help of a normal bar, so? which is not more? njs no special drill for cleaning similar holes for anchor bolts. The material with which? built to the plastic sleeve must be so? impact resistant, that the sleeve must not break during the blows that are given to remove the concrete plug, and furthermore the slightly conical hole of the plastic sleeve must have a smooth internal surface, which however occurs with most plastic materials. If we are talking about a "hole" in the plastic sleeve, there? does not necessarily mean that the cavity? slightly conical center of the butt is obtained by means of holes, but? that these sleeves are obtained in the usual manner by injection molding or similar processes.

What material for these plastic sleeves? a polyamide very suitable, but can they be manufactured for? also

with a suitably prepared PVC.

In an executive form of? Invention the sleeve in plate has a flange for fixing the sleeve itself, which grips from below a projection of the base for form, which projection? preferably consisting of a groove on the side of the formwork base facing the frame and the flange? fixed, at least on part of the

its perimeter., between the formwork base and the frame. There? has the advantage that the plastic sleeve can? be fixed very simply in the formwork panel; in fact it is inserted before fixing the base on the steel frame in a relatively large hole in the frame, so? that after fixing the formwork base - normally made of a plywood panel - on the frame, the flange of the plastic sleeve is locked and then fixed between the base and the frame. Therefore not? absolutely necessary that the flange fits into a groove on the surface of the base facing the frame; to fix the plastic sleeve, the flange can? also engage in a slot provided in the base for formwork that runs parallel to the plane of the base itself or also for? in a groove on the surface of the base facing the concrete; finally, the sleeve must be fixed to the base with nails that penetrate the flan already? or similar . Do not ? need this flange serving

to fix the plastic sleeve gripping the entire perimeter of the plastic sleeve into the formwork panel.

To fix the sleeve? it is sufficient that this flange is only grabbed on a part of its perimeter by a projection of the formwork base.

In one embodiment of the invention the larger diameter

of the tapered hole of the plastic sleeve is located on the relative end. opposite the base. There? presents ahead

all the advantage that the concrete, which penetrates through the extremity? open located on the plane of the base during its advancement in the hole, finds a section more and more? wide and therefore, if anything, it sticks on the inner surface of the plastic sleeve only with a small pressure and there is therefore no risk that the taper? hole is damaged due to the expansion of the plastic sleeve in one place. Since? the conicity? of the hole is maintained even after prolonged use of the panel, the hardened concrete plug always remains only loosened in the hole also due to the lack of pressure on the internal wall, so? that even for more? long periods of use of the panel, it can? be easily extracted, possibly by means of a single hammer blow. Furthermore, this embodiment still has the following advantage:

anchor bolts are used only if a reinforcement side of a concrete wall? already? present and the opposing armature is built. The worker then works on the inside of the armor already? prepared. Should he want to remove a concrete plug from a hole in the armature already? implanted, it would be advantageous if he could do there? from the -place in which it is located at that moment, therefore from the inner side of the previously constructed armor. Furthermore, this embodiment has the advantage that the spacer tube placed on the anchor bolt covers the smallest hole. small.

In order to give the plastic sleeve a particular resistance and avoid, for example, with certainty that its hole widens over time, the plastic sleeve can? be covered with a metal support sleeve, preferably in iron or steel. In one embodiment of the invention, this support sleeve wraps the plastic sleeve only within the steel frame; in other embodiments the support sleeve can be wrapped around the plastic sleeve. wrap the plastic sleeve not only in the frame but also in the enclosure base.

In one embodiment of the invention, the Boete sleeve wraps the plastic sleeve only within the plastic sleeve. empty yarn. In this case the support sleeve? held in the walls of the hollow section by means of flanging, by the edges of the holes. On the other hand, the metal sleeves, which are inserted into the formwork panels already? known, in the holes of the steel frames they are fixed in these holes with weldings or welding points, which has the disadvantage that in the area of these welding points the proliferation weakens more due to the greater drilling , do deformations occur as a result of welding and also the welding itself? pi? expensive.

The aforementioned embodiment of the invention can? for? also be formed so that the diameter of the support sleeve is widened at its ends. and the flanged edges of the holes provided in the walls of the frame engage in the area between the ends? of the support sleeve and the outer surface of the plastic sleeve. In other words, the widening is preferably performed to correspond to the thickness of the flanged edges. that the plastic sleeve is also guided on this end. The internal diameter of the support sleeve can? also be smooth and, in the area of the extremities? of the support sleeve, the outer diameter of the plastic sleeve pu? be reduced t? so as to form an intermediate space between the inner wall of the support sleeve and the outer wall of the plastic sleeve in which the fringes of the edges of the holes can be inserted.

In the panels for safety boxes already? note the drilling that is in the continuous steel frame with the same diameter in the base fixed on the frame. This has the disadvantage that between the outer edge of the formwork base and the part of the hole adjacent to the edge there remains only a narrow band of the base consisting of a plywood panel, which often breaks after frequent use of the formwork panel. .

In an embodiment of the invention, the groove which receives the anchor bolt and which? aligned with the holes on the frame for the insertion of the anchor bolt is no longer? produced with a drill that is applied on the axis of the hole, but? with a cutter which is applied on the edge of the base and which moves inwards until the axis of the cutter coincides with the axis of the hole on the frame. The cavity which receives the anchor bolt therefore has two flat lateral surfaces which go from the edge towards the inside and which then flow into a surface in the shape of a half cylinder which is aligned with the hole in the frame. According to the invention, the plastic sleeve has on its extremity? aligned with the plane of the base is a head which completely fills the shape of a similar recess obtained with a cutter. This has the advantage of preventing breakage of the base on its edge adjacent to the perforation and the fact that. the base has a smooth surface also in this point.

The invention can? also be made in such a way that in a panel, in which they are used in cavities? of the canvas i in steel the metal sleeves that receive the anchor bolts, the inner wall of the perforation is covered with a layer of plastic, so? that substantially the same advantages can be obtained as in the embodiment relating to the invention, by constituting the plastic sleeve an autonomous part. In addition, the drilling of the metal sleeve can? widen in a slightly conical shape in the direction of its extremity? opposite the base and the plastic layer shows an approximately constant thickness along the tube. Or the drilling of the metal sleeve can? be cylindrical and in this drilling can? be pressed into a plastic sleeve with a conical hole, where the plastic sleeve on its outer side has a ring-like enlargement which engages in a ring groove on the inner surface of the metal sleeve. Other features of the invention result from the following description of an embodiment of the invention in relation to the claims and the drawing. They indicate:

in fig. 1: a vertical view of an embodiment of the formwork panel according to the invention,

in fig. 2: a section through the transversal cut of the frame formed with a hollow profile,

in fig. 3: on an enlarged scale a longitudinal section through the hole corresponding to the line ??? - ??? of fig. 4,

in fig. 4: a vertical view of the hole in the direction of the arrow IV-IV of fig. 3.

Fig. 1 shows the formwork panel 1 from the side opposite the reinforcement surface. The formwork panel.1 pr?

?

feel a frame 2 that in the area of its edge? formed by a hollow section 3 whose section? shown in fig. 2 and which also has two transversal struts 4 which are formed by a simple rectangular hollow section and which support the formwork base 5 - formed from a single piece - of the panel 1 at equal distances from the two narrow sides of the panel 1.

All hollow sections are made of steel.

The formwork base 5? constituted in a known way of a 2 cm thick plywood panel, and also the projection 6 of the hollow section 3 - visible in fig. 2 - has a height of 2 cm, so? that the base is protected in the area of its front surface from all sides by the projection 6, without this projection 6 extending above the surface 8 of the base 5. The base 5 is supported by the wall section of the hollow section 3 indicated here as inner segment 10.

Figs. 3 and 4 show the constitution of the panel in the area of the holes 12 which pass through the frame 2 and which serve for the passage of anchor bolts. Each hole 12 is located in a plastic sleeve 14 and has a conical shape, i.e. ? pi? tight in the area of the reinforcement surface. In the area of the plastic sleeve 14 both the inner segment 10 of the wall of the hollow section 3 and the outer segment 16 located parallel to the previous one are perforated, and after having folded the edge of the cavities upwards. 18 and 19 what is it? were formed.

? a steel support sleeve 20 and the edges 21 and 22 of the cavities have been inserted into the interior of the hollow section 3. 18 and 19 were pushed on the ends? 23 and 24 of the support sleeve 20 cos? to be found on the internal surface of the support sleeve, the ends? 23 and 24 are enlarged with respect to the remaining diameter of the support sleeve so that the internal surface of the flanged portion of the edges 21 and 22 is aligned with the internal surface 26 of the support sleeve 20 in its non-enlarged area. The plastic mani_ cotto 14? -, in that area which extends from the flanged edge 21 to the flanged edge 22, externally cylindrical and its external diameter? cos? dimensioned which is in contact with the support sleeve and also in contact with the flanged edges 21 and 22. Also the extremity? of the plastic handle at the bottom of fig. 3 is still supported, as shown in the drawing, and that is to say? on the flange edge to 21. The edges 21 and 22 of the cavities? 18 and 19 enter cos? in the area of the end? 23 and 24 of the support sleeve 20 in the gap between the support sleeve and the plastic sleeve 14.

The plastic sleeve 14? pi? length of the distance between the inner segment 10 of the hollow section and the outer segment 16, which ends with its extremity? in fig. 1 exactly in the plane of the surface 8. The base 3 has in the area of the plastic sleeve 14 a groove 28 open towards the edge of the base itself and the terminal segment 29 of the plastic sleeve 14 arranged in the area of the base 5 has such a section that it completely fills this milling at least in the area of surface 8. At some distance from surface 8, the plastic sleeve has a protruding flange 31, which with its side 32 opposite to surface 8 rests on the inner segment 10 of the hollow side profile, while on the inner side 33 of the flange 31? the base 5 is positioned by means of a shoulder 38 obtained by milling a recess 36 in the rear side 37 of the base itself. As appears in Fig. 4, the flange 31 is missing only where the plastic sleeve 14 is with a straight side 35 immediately in contact with the projection 6 of the empty profile 3 which serves to protect the front surface of the base 5. Thanks to the flange 31 which is fixed between the epalum 33 of the base 5 and the inner segment 10 of the empty section, the plastic sleeve 14 cannot? get lost, can? however. in case of need? be easily changed and fixed on panel 1.

It is advantageous, if the conical shape of the hole of the plastic sleeve. H extends along l? entire length or at least along a substantial part of the length of the plastic sleeve and if the hole widens only slightly towards the outside, that l? angle at the apex of the cone is not too large. For example, the conical hole can? be about 12 cm long; R I V E N D I C A Z I O N I

1. Formwork panel for concrete walls with a steel frame supporting a formwork base, in which? a hole is provided, arranged in a sleeve and passing through the steel frame, for an anchor bolt which passes through the wall, therefore characterized in that the hole (12)? conical and? provided in a plastic pocket (14) which penetrates the frame (2) of the formwork and? fixed in it.

2. Device according to claim 1, therefore characterized in that the plastic sleeve (14) has a flange (31) for fixing the sleeve itself, which grips from underneath a projection (38) of the formwork base (5 ).

3. Device according to claim 2, therefore characterized in that this projection (38)? formed by a recess (36) on the surface (37) of the base (5) facing the frame (2) and the flange (31)? fixed at least on a part of the

its perimeter between the base (5) and the frame (2).

4. Device according to one of the preceding claims, therefore characterized in that the largest diameter of the conical bore (12) is located on its extremity. opposite the base (5) *

Device according to claim 4 is therefore characterized by the fact that the plastic sleeve (14)? wrapped inside the frame (2) by a support sleeve (20). Device according to claim 5? therefore characterized by the fact that the support sleeve (20)? held by flanging the edges (21, 22) of the recesses (18, 19) in the walls (10, 16) of the empty frame section.

Device according to claim 6, therefore characterized by the fact that the diameter of the support sleeve (20)? enlarged on its ends? (23, 24) and the flange edges of the recesses (18, 19) provided in the walls (10, 16) of the frame engage in the gap between the ends ^ t? (23, 24) of the support sleeve (20) and the outer surface of the plastic sleeve (14)? Device according to one of the preceding claims, therefore characterized in that the base (5), in order to accommodate one of the anchoring bolts, has a milling cut that starts from the edge of the base (5) and the end? (29) of the plastic sleeve (14) adjacent to the plane of the base (8) completely fills this groove.

Formwork panel for concrete walls with a steel frame supporting a formwork base, in which? a hole is provided in a metal sleeve which penetrates the steel frame, for an anchor bolt which penetrates the wall, therefore characterized by the fact that the hole in the metal sleeve widens with a slight conicity. towards its extremity? 0? placed at the base and? coated with a layer of plastic.

10. Formwork panel for concrete walls with a steel frame <*> supporting a formwork base, in which? foreseen a cylindrical perforation that crosses the frame and? lying in a metal sleeve for a bull? anchoring that crosses the wall, therefore characterized by the fact that in the drilling? fixed a man? fired in plastic with conical perforation.

1 table of drawings follows