EP2447430A2 - Pre-fabricated component for a canteleverd balcony slab - Google Patents

Pre-fabricated component for a canteleverd balcony slab Download PDF

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Publication number
EP2447430A2
EP2447430A2 EP11186807A EP11186807A EP2447430A2 EP 2447430 A2 EP2447430 A2 EP 2447430A2 EP 11186807 A EP11186807 A EP 11186807A EP 11186807 A EP11186807 A EP 11186807A EP 2447430 A2 EP2447430 A2 EP 2447430A2
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EP
European Patent Office
Prior art keywords
teeth
prefabricated component
balcony
insulating body
component according
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EP11186807A
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German (de)
French (fr)
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EP2447430B1 (en
EP2447430A3 (en
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KKI Enterprises GmbH
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KKI Enterprises GmbH
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/003—Balconies; Decks
    • E04B1/0038—Anchoring devices specially adapted therefor with means for preventing cold bridging

Definitions

  • the invention relates to a prefabricated component as a connection element for a projecting balcony slab.
  • Fertigbaumaschine for a projecting balcony slab are for example from the DE 196 52 165 C2 or the DE 10 2007 050 059 A1 known.
  • the temperature movement is a very significant load case.
  • the balcony expands parallel to the building, while at night it shortens. This constant movement is intensified seasonally.
  • the balcony extends from 7.000 m to 7.005 m in summer, ie by a few millimeters and in winter there is a corresponding shortening.
  • the ceiling or wall remains lying behind an exterior insulation, without such deformations.
  • the actual prefabricated component and thus the connecting element must allow this movement, so be horizontally lubricious, so that the fatigue stress is not increased by the friction to be overcome or even corresponding constraints.
  • the weight loads In the vertical direction, the weight loads must be absorbed and gliding in this direction is not possible.
  • the external attenuations have been designed for 80 mm to 100 mm.
  • the balcony thicknesses are usually 20 cm, so that the previous shear force elements are formed with oblique tensile steel bars.
  • the outer insulation and thus the prefabricated thicker so there are very flat inclinations for the oblique rod as a lateral force element, which lead to any useful load more.
  • the invention has for its object to bring about a strict structure of the connection element and to provide the ability to achieve greater insulation thicknesses of the finished component.
  • This object is achieved on the one hand via one or more toothed pulleys as lateral force elements, on the other hand by thrust bearing with an eight to twelve times strength of the ceiling concrete with a horizontal mobility promoting cavity cross-section.
  • Toothed disks proposed, which are distributed in slots of the insulating body over its length. These toothed pulleys are independent of the thrust bearings and act as lateral force elements and are used in slots that are excluded in Dämm emotions. Here, the toothed disks do not reach the lower edge of the insulating body, but sit in slots within the insulating body.
  • the invention proposes a strict structure of the connecting element, wherein a separation of the multiaxial stress states is enforced and therefore up to 20 cm insulation thickness is possible.
  • the rigid box is dissolved, quasi cut.
  • thrust bearing which do not consist of a block, but these pressure bearings are composed of webs and thus are more flexible and can respond better to temperature differences.
  • the toothed discs have at least one tooth on each side, both of which are the same size.
  • the vertical end face in the area of the larger teeth is designed as a pressure surface to the balcony ceiling.
  • the printing area extends from the slice corner to about the middle of the larger tooth.
  • the mathematical ratio of this vertical pressure surface to the sum of the horizontal tooth surface corresponds approximately to the square root formed from insulation thickness divided by 80 mm.
  • a bore may be provided through which concrete flows, thereby creating a good bond.
  • the actual toothed discs are made of plastic and preferably from a polyamide injection molding with finely divided glass fibers.
  • the existing plastic pulley is formed like a sheet, d. H. thin and 5 to 12 mm thick. It ends about 3 to 6 cm below the balcony top edge and is not frictionally connected to the actual prefabricated component or the pressure bearing used.
  • the balcony-side teeth on the toothed pulleys may be roughened or toothed on their vertical end outside to the balcony, while the teeth are smooth on their top and bottom. Likewise, all the tooth surfaces on the ceiling are smooth.
  • the thrust bearings are formed by a plastic grid element and also consist of a polyamide injection molding, wherein the hollow box formed from the plastic grids has a mass or moment of inertia which is horizontally equal to a maximum of 20% of vertical.
  • the cavities of the hollow box of the thrust bearing can be filled with fire-resistant material or low-strength injection molding.
  • the pressure bearings are generally roughened or toothed to the balcony side.
  • the thrust bearings do not extend to the end face of the insulation, d. H. do not quite match the insulation thickness.
  • the remaining cavity is later potted with the concrete of the balcony ceiling.
  • the distance between thrust bearing and toothed pulley depends on the load conditions. For higher loads, there must be a distance of 2 cm between the lower edge of the thrust bearing as the most heavily loaded point in the bearing and the lower edge of the sprocket.
  • the plastic material polyamide injection molding with finely divided glass fibers about 30 to 60 volume percent and due to the grid construction results from the injection molding a direction of the fibers. This causes due to the forced orientation of the fibers an above average increase in strength and Querverformungsdorfkeit.
  • the latticed configuration has the further advantage that after the injection process no long cooling times are required, otherwise the homogeneity and thus the strength of the Pressure bearing suffer.
  • a thin strip can be manufactured accurately using injection molding or casting.
  • the 8 mm thick toothed disc can be advantageously brought into a lattice form by on 5 mm thick solid material bilateral ribs are formed, which continue on the teeth and thicken them.
  • the thickening of the disc is advantageously formed at the pressure points of the larger teeth.
  • Fig. 1 shows an insulating body 1, which is 60 cm long in the illustrated embodiment to illustrate the invention, has a height of 15 cm, with a balcony thickness of 20 cm and an insulating thickness of 8 cm.
  • this insulating body are in slots 13 u. 13a at a distance from each other a plurality of toothed discs 4 can be used, their design Fig. 2 and Fig. 4 clearer.
  • the representation in Fig. 1 should only show the precast component in general, which serves as a connection element for a projecting balcony plate.
  • the recesses 13 for the toothed discs 4 are about 2 cm away from the recesses 7.
  • the recess 13 a is located approximately centrally between the recesses 7, but extends to the lower edge of the insulating body. 1
  • a toothed disc 4 is shown, wherein the balcony side with B and the ceiling side is denoted by D.
  • the toothed disk 4 has teeth 5 on the balcony side B, while teeth 6 are provided on the ceiling side.
  • the upper teeth 5 are designed to project further than the lower teeth 5 and the balcony-side teeth 5 are roughened on its vertical outside, so that a good adhesion is achieved.
  • the vertical end faces in the region of the larger teeth 5, 6 are designed as pressure surfaces 10. At the top and bottom of all teeth 5 and all sides of the teeth 6 are smooth.
  • the toothed disc 4 is made of a plastic material, preferably polyamide injection molding, and has finely divided glass fibers in a proportion of 30 to 60 volume percent.
  • the distance Z the distance between the upper edge of the lower tooth 5 and the lower edge of the lower tooth 6 is designated.
  • the insulation thickness here is 160 mm, the height of the toothed disc 120 mm and the distance Z is 15 mm.
  • Fig. 1 a shows a horizontal section through the insulating body.
  • the thrust bearing 3, 3a, 3b do not reach on the balcony side to the end face of the insulation.
  • Fig. 3 are thrust bearing 3, 3a and 3b shown.
  • the thrust bearing 3 has a width of 40 mm and height of 40 mm and consists of three vertical disks of 8 mm each and two cover disks.
  • Integrated are again two slices.
  • the thrust bearing 3a four vertical discs, a center disc and two cover discs are provided.
  • the strength of the plastic is about eight to twelve times that of the concrete of the actual ceiling, so that little plastic material is needed and cost-effective production is achieved.
  • the dissolution of the cuboid into a hollow mold significantly reduces the rigidity with respect to temperature movements compared with the solid material known in the prior art.
  • the vertical surface on the balcony side is interlocked or roughened, creating a centering with the concrete of the balcony which promotes horizontal movement.
  • the plastic material consists of a polyamide injection molding with finely divided glass fibers, d. H. 30 to 60 volume percent. Due to the orientation of the fibers caused by injection molding, an above-average increase in strength and transverse deformation capability is achieved. In the cavities of the two thrust bearings 3 and 3a fire protection material can be introduced.
  • Thrust bearing 3 b shows a grid element whose outer ring 12 is formed with a higher compressive strength than the core thirteenth
  • a plastic trough can be inserted into the tie rods 2.
  • the toothed disks each have aligned with one another material-like, very thin support plates 8 and 9, through which the channel for receiving the tension rods 2 is created.
  • the tie rods 2 create the upper reinforcement.
  • the existing plastic thrust bearing 3 are provided, which are not connected in the same material with the toothed discs.
  • the thrust bearings have a larger surface area of 50/50 mm than in FIG. 1 because no distance between the discs 4 is provided.
  • a tooth 5a is provided in the upper region of the toothed disc, in which a bore is provided, in which concrete runs concrete or a transverse rod or a bracket can be inserted to the rear wall anchorage. Also in this case, the tops of the teeth are smooth, so that thereby a slide is promoted.
  • Fig. 6 shows a material-saving design of the toothed disc with protruding ribs, which continue in the teeth.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Floor Finish (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

Abstract

The prefabricated component has an insulating body (1), which is designed as a precast component. The tensile bars (2) distributed over a length are inserted in the insulating body. The recesses (7) are arranged in the lower area of the insulating body for thrust bearings with reduced heat conductivity. The anchoring projections are arranged on toothed washers (4), which are inserted in slots (13,13a) of the insulating body over its length in a distributed manner. The plastic material of the toothed washer consists of polyamide-die casting or is reinforced with finely dispersed glass fibers.

Description

Die Erfindung bezieht sich auf ein Fertigbauteil als Anschlusselement für eine auskragende Balkonplatte.The invention relates to a prefabricated component as a connection element for a projecting balcony slab.

Fertigbauteile für eine auskragende Balkonplatte sind beispielsweise aus der DE 196 52 165 C2 oder der DE 10 2007 050 059 A1 bekannt.Fertigbauteile for a projecting balcony slab are for example from the DE 196 52 165 C2 or the DE 10 2007 050 059 A1 known.

Die Beanspruchungen in diesen Fertigbauteilen entstehen aus dem Balkoneigengewicht, der Verkehrslast durch Nutzung sowie der Folge von Temperaturbewegungen.The stresses in these prefabricated components arise from the balcony own weight, the traffic load through use and the result of temperature fluctuations.

Die Temperaturbewegung ist dabei ein sehr bedeutender Lastfall. Tagsüber dehnt sich der Balkon parallel zum Gebäude aus, während er sich nachts verkürzt. Diese ständige Bewegung wird jahreszeitenbedingt verstärkt. Für einen Balkon von 7 m Länge und einer Breite in der Regel zwischen 1,20 und 2,50 m verlängert sich der Balkon im Sommer von 7,000 m auf 7,005 m, also um einige Millimeter und im Winter gibt es eine entsprechende Verkürzung. Über einen Zeitraum von 80 Jahren betrachtet, gibt es über 100.000 solcher Verformungszyklen und das Material des Anschlusselementes wird daher ermüden.The temperature movement is a very significant load case. During the day, the balcony expands parallel to the building, while at night it shortens. This constant movement is intensified seasonally. For a balcony of 7 m length and a width usually between 1.20 and 2.50 m, the balcony extends from 7.000 m to 7.005 m in summer, ie by a few millimeters and in winter there is a corresponding shortening. Over a period of 80 years, there are over 100,000 such deformation cycles, and the material of the connection element will therefore become fatigued.

Während der Balkon sich bewegt, bleibt die Decke oder die Wand, weil hinter einer Außendämmung liegend, ohne derartige Verformungen. Das eigentliche Fertigbauteil und damit das Anschlusselement muss diese Bewegung zulassen, also horizontal gleitfähig sein, damit die Ermüdungsbeanspruchung nicht durch die zu überwindende Reibung oder gar entsprechende Zwänge erhöht wird. In der vertikalen Richtung sind die Gewichtslasten aufzunehmen und ein Gleiten in dieser Richtung ist nicht möglich.As the balcony moves, the ceiling or wall remains lying behind an exterior insulation, without such deformations. The actual prefabricated component and thus the connecting element must allow this movement, so be horizontally lubricious, so that the fatigue stress is not increased by the friction to be overcome or even corresponding constraints. In the vertical direction, the weight loads must be absorbed and gliding in this direction is not possible.

Versuche haben ergeben, dass die in den beiden genannten Literaturstellen beschriebenen Fertigbauteile die Last nur sehr eingeschränkt aufnehmen könnten. Diese Einbauteile sind zu starr, quasi ein steifer Kasten, der bei Temperaturlasten zu gro-βe Spannungen auf sich zieht. Es kommt zum schnellen Versagen. Aus dem gleichzeitigen Wirken der vertikalen Gewichtslasten und der horizontalen Bewegungen kommt es zu ungünstigen mehraxialen Spannungsüberlagerungen. Dies ist für den anschließenden Beton ungünstig, da er unkontrolliert aus unterschiedlichen Richtungen belastet wird.Experiments have shown that the prefabricated components described in the two cited references could absorb the load only very limited. These built-in parts are too rigid, a kind of stiff box, which attracts too much stress under temperature loads. It comes to a quick failure. The simultaneous action of the vertical weight loads and the horizontal movements leads to unfavorable multiaxial stress superimpositions. This is unfavorable for the subsequent concrete because it is loaded uncontrollably from different directions.

Bislang waren die Außendämmungen auf 80 mm bis 100 mm ausgelegt. Die Balkondicken liegen üblicherweise bei 20 cm, so dass die bisherigen Querkraftelemente mit schrägen Zugstäben aus Stahl ausgebildet sind. Wird nun die Außendämmung und damit das Fertigbauteil dicker, so ergeben sich sehr flache Neigungen für den Schrägstab als Querkraftelement, die zu keinem brauchbaren Lastabtrag mehr führen.So far, the external attenuations have been designed for 80 mm to 100 mm. The balcony thicknesses are usually 20 cm, so that the previous shear force elements are formed with oblique tensile steel bars. Now, if the outer insulation and thus the prefabricated thicker, so there are very flat inclinations for the oblique rod as a lateral force element, which lead to any useful load more.

In der EP 1 564 336 A1 wird ein thermisch isolierendes Bauelement beschrieben, bei welchem Druck- und Schublager vorgesehen sind, die einteilig ausgebildet sind, d. h. also die über die Oberfläche des Dämmkörpers vorspringenden Zähne sind einteilig mit den eigentlichen Drucklagern. Durch die Verbindung von Zahnscheibe und Drucklager in einem Teil kommt es zu einer übergroßen Druckkraft im Bereich der Drucklager und es kann zu Betonabplatzungen führen.In the EP 1 564 336 A1 a thermally insulating component is described in which pressure and thrust bearings are provided, which are integrally formed, that is, so over the surface of the insulating body projecting teeth are integral with the actual thrust bearings. The connection of the toothed disc and thrust bearing in one part leads to a Excessive pressure in the area of the thrust bearing and it can lead to concrete spalling.

Der Erfindung liegt die Aufgabe zugrunde, eine strenge Gliederung des Anschlusselementes herbeizuführen und die Möglichkeit zu schaffen, größere Dämmdicken des Fertigbauteiles zu erreichen.The invention has for its object to bring about a strict structure of the connection element and to provide the ability to achieve greater insulation thicknesses of the finished component.

Diese Aufgabe wird einerseits über eine oder mehrere Zahnscheiben als Querkraftelemente gelöst, andererseits durch Drucklager mit einer acht- bis zwölffachen Festigkeit des Deckenbetons mit einem die horizontale Beweglichkeit fördernden Hohlraumquerschnitts.This object is achieved on the one hand via one or more toothed pulleys as lateral force elements, on the other hand by thrust bearing with an eight to twelve times strength of the ceiling concrete with a horizontal mobility promoting cavity cross-section.

Gemäß der Erfindung werden zur Verbindung anstelle der bekannten Querkraftstäbe ( DE 196 52 165 C2 ) oder der an den Außenseiten des Fertigbauteiles vorgesehenen Verankerungsvorsprüngen ( DE 10 2007 050 059 A1 ) oder den Druck- und Schublagern ( EP 1 564 336 A1 ) Zahnscheiben vorgeschlagen, die in Schlitze des Dämmkörpers über dessen Länge verteilt eingesetzt sind. Diese Zahnscheiben sind unabhängig von den Drucklagern und wirken als Querkraftelemente und werden in Schlitzen eingesetzt, die im Dämmkörper ausgenommen sind. Hierbei reichen die Zahnscheiben nicht bis zur Unterkante des Dämmkörpers, sondern sitzen in Schlitzen innerhalb des Dämmkörpers.According to the invention, instead of the known transverse force rods, DE 196 52 165 C2 ) or provided on the outer sides of the prefabricated anchoring projections ( DE 10 2007 050 059 A1 ) or the pressure and thrust bearings ( EP 1 564 336 A1 ) Toothed disks proposed, which are distributed in slots of the insulating body over its length. These toothed pulleys are independent of the thrust bearings and act as lateral force elements and are used in slots that are excluded in Dämmkörper. Here, the toothed disks do not reach the lower edge of the insulating body, but sit in slots within the insulating body.

Die Erfindung schlägt also eine strenge Gliederung des Anschlusselementes vor, wobei eine Trennung der mehraxialen Spannungszustände erzwungen wird und daher bis zu 20 cm Dämmstoffdicke möglich wird. Der starre Kasten wird aufgelöst, quasi zerschnitten.Thus, the invention proposes a strict structure of the connecting element, wherein a separation of the multiaxial stress states is enforced and therefore up to 20 cm insulation thickness is possible. The rigid box is dissolved, quasi cut.

Zur Lösung der der Erfindung zugrunde liegenden Aufgabe werden auch Drucklager vorgeschlagen, die nicht aus einem Block bestehen, sondern diese Drucklager sind aus Stegen zusammengesetzt und sind dadurch nachgiebiger und können besser auf Temperaturunterschiede reagieren.To solve the problem underlying the invention also thrust bearing are proposed, which do not consist of a block, but these pressure bearings are composed of webs and thus are more flexible and can respond better to temperature differences.

Die Zahnscheiben weisen mindestens einen Zahn an jeder Seite auf, die beide die gleiche Größe aufweisen.The toothed discs have at least one tooth on each side, both of which are the same size.

Gemäß der Erfindung kann aber auch vorgesehen sein, dass auf jeder Seite mindestens zwei Zähne vorhanden sind, wobei dann der obere Zahn zur Balkonseite und der untere Zahn auf der Deckenseite länger ausgebildet sind als die anderen.According to the invention can also be provided that on each side at least two teeth are present, in which case the upper tooth to the balcony side and the lower tooth on the ceiling side are designed to be longer than the others.

Die vertikale Stirnfläche im Bereich der größeren Zähne ist als Druckfläche zur Balkondecke ausgebildet. Die Druckfläche reicht von der Scheibenecke bis etwa zur Mitte des größeren Zahnes. Das mathematische Verhältnis von dieser vertikalen Druckfläche zur Summe der horizontalen Zahnfläche entspricht etwa der Quadratwurzel gebildet aus Dämmstoffdicke dividiert durch 80 mm.The vertical end face in the area of the larger teeth is designed as a pressure surface to the balcony ceiling. The printing area extends from the slice corner to about the middle of the larger tooth. The mathematical ratio of this vertical pressure surface to the sum of the horizontal tooth surface corresponds approximately to the square root formed from insulation thickness divided by 80 mm.

In dem oberen größeren Zahn kann eine Bohrung vorgesehen sein durch die Beton fließt und dadurch eine gute Verbindung schafft. Die eigentlichen Zahnscheiben bestehen aus Kunststoff und zwar vorzugsweise aus einem Polyamid-Spritzguss mit fein verteilten Glasfasern.In the upper larger tooth, a bore may be provided through which concrete flows, thereby creating a good bond. The actual toothed discs are made of plastic and preferably from a polyamide injection molding with finely divided glass fibers.

Die aus Kunststoff bestehende Zahnscheibe ist blechartig ausgebildet, d. h. dünn und zwar 5 bis 12 mm dick. Sie endet etwa 3 bis 6 cm unterhalb der Balkonoberkante und ist nicht kraftschlüssig mit dem eigentlichen Fertigbauteil oder dem eingesetzten Drucklager verbunden.The existing plastic pulley is formed like a sheet, d. H. thin and 5 to 12 mm thick. It ends about 3 to 6 cm below the balcony top edge and is not frictionally connected to the actual prefabricated component or the pressure bearing used.

Die balkonseitigen Zähne an den Zahnscheiben können an ihrer vertikalen Stirn-Außenseite zum Balkon hin aufgeraut oder verzahnt ausgebildet sein, während die Zähne an ihrer Ober- und Unterseite glatt gestaltet sind. Ebenso sind alle deckenseitigen Zahnflächen glatt.The balcony-side teeth on the toothed pulleys may be roughened or toothed on their vertical end outside to the balcony, while the teeth are smooth on their top and bottom. Likewise, all the tooth surfaces on the ceiling are smooth.

Die Drucklager werden durch ein Kunststoffgitterelement gebildet und bestehen ebenfalls aus einem Polyamid-Spritzguss, wobei der aus den Kunststoffgittern gebildete Hohlkasten ein Masse- bzw. Trägheitsmoment aufweist, das horizontal gleich maximal 20 % von Vertikal ist.The thrust bearings are formed by a plastic grid element and also consist of a polyamide injection molding, wherein the hollow box formed from the plastic grids has a mass or moment of inertia which is horizontally equal to a maximum of 20% of vertical.

Die Hohlräume des Hohlkastens des Drucklagers können mit brandbeständigem Material oder niederfestem Spritzguss ausgefüllt sein.The cavities of the hollow box of the thrust bearing can be filled with fire-resistant material or low-strength injection molding.

Die Drucklager sind grundsätzlich zur Balkonseite hin aufgeraut bzw. verzahnt.The pressure bearings are generally roughened or toothed to the balcony side.

Die Drucklager reichen auf der Balkonseite nicht bis zur Stirnfläche der Dämmung, d. h. entsprechen nicht ganz der Dämmstoffdicke. Der verbliebene Hohlraum wird später mit dem Beton der Balkondecke vergossen.On the balcony side, the thrust bearings do not extend to the end face of the insulation, d. H. do not quite match the insulation thickness. The remaining cavity is later potted with the concrete of the balcony ceiling.

Der Abstand zwischen Drucklager und Zahnscheibe hängt von den Belastungsverhältnissen ab. Bei höheren Lasten muss ein Abstand von 2 cm zwischen dem unteren Drucklagerrand als höchst belastete Stelle im Lager und dem unteren Rand der Zahnscheibe vorhanden sein.The distance between thrust bearing and toothed pulley depends on the load conditions. For higher loads, there must be a distance of 2 cm between the lower edge of the thrust bearing as the most heavily loaded point in the bearing and the lower edge of the sprocket.

Vorteilhaft ist das Kunststoffmaterial Polyamid-Spritzguss mit feinteiligen Glasfasern, etwa 30 bis 60 Volumenprozent und infolge der Gitterkonstruktion ergibt sich aus dem Spritzgussvorgang eine Richtung der Fasern. Dies bewirkt infolge der erzwungenen Orientierung der Fasern eine überdurchschnittliche Festigkeitssteigerung und Querverformungsmöglichkeit.Advantageously, the plastic material polyamide injection molding with finely divided glass fibers, about 30 to 60 volume percent and due to the grid construction results from the injection molding a direction of the fibers. This causes due to the forced orientation of the fibers an above average increase in strength and Querverformungsmöglichkeit.

Die gitterförmige Ausbildung hat weiterhin den Vorteil, dass nach dem Spritzvorgang keine langen Auskühlzeiten erforderlich sind, andernfalls würde die Homogenität und damit die Festigkeit des Drucklagers leiden. Ein dünner Streifen lässt sich dagegen im Spritzguss- oder auch Gießverfahren zielsicher herstellen.The latticed configuration has the further advantage that after the injection process no long cooling times are required, otherwise the homogeneity and thus the strength of the Pressure bearing suffer. On the other hand, a thin strip can be manufactured accurately using injection molding or casting.

Daher genügt weniger Kunststoffmaterial, wobei es auch wesentlich ist, dass durch die Auflösung des Körpers in eine Hohlform sich die Steifigkeit gegenüber Temperaturbewegung deutlich gegenüber Vollmaterial reduziert.Therefore, less plastic material is sufficient, and it is also essential that by dissolving the body into a hollow mold, the rigidity against temperature movement is significantly reduced compared to solid material.

Auch kann die 8 mm dicke Zahnscheibe vorteilhaft in eine Gitterform gebracht werden, indem an 5 mm dicken Vollmaterial beidseitige Rippen angeformt sind, die sich an den Zähnen fortsetzen und diese verdicken. Die Verdickung der Scheibe entsteht vorteilhaft an den Druckpunkten der größeren Zähne.Also, the 8 mm thick toothed disc can be advantageously brought into a lattice form by on 5 mm thick solid material bilateral ribs are formed, which continue on the teeth and thicken them. The thickening of the disc is advantageously formed at the pressure points of the larger teeth.

Ausführungsbeispiele der Erfindung werden nachfolgend anhand der Zeichnungen erläutert. Die Zeichnungen zeigen dabei in

Fig. 1 u. 1a
die Ansicht eines und einen Schnitt durch einen Dämmkörper, in
Fig. 2
eine Zahnscheibe, in
Fig. 3
die Ausbildung von Gestaltungsformen für die Drucklager, in
Fig. 4
eine abgeänderte Ausführungsform eines Teiles der Zahnscheiben, in
Fig. 5
eine Einzelheit einer Zahnscheibe und in
Fig. 6
eine abgeänderte Ausführungsform einer Zahnscheibe.
Embodiments of the invention are explained below with reference to the drawings. The drawings show in
Fig. 1 u. 1a
the view of and a section through a Dämmkörper, in
Fig. 2
a toothed disc, in
Fig. 3
the formation of design forms for the thrust bearing, in
Fig. 4
a modified embodiment of a part of the toothed discs, in
Fig. 5
a detail of a toothed disc and in
Fig. 6
a modified embodiment of a toothed wheel.

Fig. 1 zeigt einen Dämmkörper 1, der bei dem dargestellten Ausführungsbeispiel zur Verdeutlichung der Erfindung 60 cm lang ist, eine Höhe von 15 cm aufweist, bei einer Balkondicke von 20 cm und eine Dämm- Dicke von 8 cm. In diesem Dämmkörper sind in Schlitze 13 u. 13a im Abstand voneinander mehrere Zahnscheiben 4 einsetzbar, deren Gestaltung aus Fig. 2 und Fig. 4 deutlicher hervorgeht. Fig. 1 shows an insulating body 1, which is 60 cm long in the illustrated embodiment to illustrate the invention, has a height of 15 cm, with a balcony thickness of 20 cm and an insulating thickness of 8 cm. In this insulating body are in slots 13 u. 13a at a distance from each other a plurality of toothed discs 4 can be used, their design Fig. 2 and Fig. 4 clearer.

Außerdem sind Aufnahmeräume 7 für die in Fig. 3 dargestellten Drucklager 3, 3a, 3b vorgesehen. Die Darstellung in Fig. 1 soll nur allgemein das Fertigbauteil zeigen, das als Anschlusselement für eine auskragende Balkonplatte dient.In addition, recording rooms 7 for the in Fig. 3 illustrated thrust bearing 3, 3a, 3b provided. The representation in Fig. 1 should only show the precast component in general, which serves as a connection element for a projecting balcony plate.

Die Ausnehmungen 13 für die Zahnscheiben 4 sind etwa 2 cm von den Ausnehmungen 7 entfernt. Die Ausnehmung 13 a liegt etwa mittig zwischen den Ausnehmungen 7, reicht aber bis zur unteren Kante des Dämmkörpers 1.The recesses 13 for the toothed discs 4 are about 2 cm away from the recesses 7. The recess 13 a is located approximately centrally between the recesses 7, but extends to the lower edge of the insulating body. 1

In Fig. 2 ist eine Zahnscheibe 4 dargestellt, wobei die Balkonseite mit B und die Deckenseite mit D bezeichnet ist. Die Zahnscheibe 4 weist dabei zur Balkonseite B hin Zähne 5 auf, während zur Deckenseite Zähne 6 vorgesehen sind. Die oberen Zähne 5 sind dabei weiter vorstehend gestaltet als die unteren Zähne 5 und die balkonseitigen Zähne 5 sind an ihrer vertikalen Außenseite aufgeraut ausgebildet, so dass eine gute Haftung erreicht wird. Die vertikalen Stirnflächen im Bereich der größeren Zähne 5,6 sind als Druckflächen 10 ausgebildet. An der Ober- und Unterseite sind alle Zähne 5 und alle Seiten der Zähne 6 glatt ausgebildet. Die Zahnscheibe 4 besteht aus einem Kunststoffmaterial, vorzugsweise Polyamid-Spritzguss, und weist fein verteilte Glasfasern auf in einem Anteil von 30 bis 60 Volumenprozent. Durch diese Materialwahl wird eine hohe Festigkeit bei gleichzeitiger großer Querverformungsmöglichkeit erreicht. Mit dem Abstand Z ist der Abstand zwischen der Oberkante des unteren Zahnes 5 und der Unterkante des unteren Zahnes 6 bezeichnet. Die Dämmstoffdicke ist hier 160 mm, die Höhe der Zahnscheibe 120 mm und der Abstand Z ist 15 mm.In Fig. 2 a toothed disc 4 is shown, wherein the balcony side with B and the ceiling side is denoted by D. The toothed disk 4 has teeth 5 on the balcony side B, while teeth 6 are provided on the ceiling side. The upper teeth 5 are designed to project further than the lower teeth 5 and the balcony-side teeth 5 are roughened on its vertical outside, so that a good adhesion is achieved. The vertical end faces in the region of the larger teeth 5, 6 are designed as pressure surfaces 10. At the top and bottom of all teeth 5 and all sides of the teeth 6 are smooth. The toothed disc 4 is made of a plastic material, preferably polyamide injection molding, and has finely divided glass fibers in a proportion of 30 to 60 volume percent. By this choice of material, a high strength is achieved at the same time large Querverformungsmöglichkeit. With the distance Z, the distance between the upper edge of the lower tooth 5 and the lower edge of the lower tooth 6 is designated. The insulation thickness here is 160 mm, the height of the toothed disc 120 mm and the distance Z is 15 mm.

Fig. 1 a zeigt einen Horizontalschnitt durch den Dämmkörper. Die Drucklager 3, 3a, 3b reichen auf der Balkonseite nicht bis zur Stirnfläche der Dämmung. Fig. 1 a shows a horizontal section through the insulating body. The thrust bearing 3, 3a, 3b do not reach on the balcony side to the end face of the insulation.

In Fig. 3 sind Drucklager 3, 3a und 3b dargestellt. Das Drucklager 3 weist eine Breite von 40 mm und Höhe von 40 mm auf und besteht aus drei vertikalen Scheiben von jeweils 8 mm und zwei Deckscheiben.In Fig. 3 are thrust bearing 3, 3a and 3b shown. The thrust bearing 3 has a width of 40 mm and height of 40 mm and consists of three vertical disks of 8 mm each and two cover disks.

Integriert sind noch mal zwei Scheiben. Bei der Ausführungsform des Drucklagers 3a sind vier vertikale Scheiben, eine Mittelscheibe und zwei Deckscheiben vorgesehen.Integrated are again two slices. In the embodiment of the thrust bearing 3a four vertical discs, a center disc and two cover discs are provided.

Die Festigkeit des Kunststoffes ist etwa acht bis zwölf Mal so hoch wie die des Betons der eigentlichen Decke, so dass wenig Kunststoffmaterial benötigt wird und eine kostengünstige Herstellung erreicht wird. Durch die Auflösung des Quaders in eine Hohlform reduziert sich die Steifigkeit gegenüber Temperaturbewegungen deutlich gegenüber dem im Stand der Technik bekannten Vollmaterial.The strength of the plastic is about eight to twelve times that of the concrete of the actual ceiling, so that little plastic material is needed and cost-effective production is achieved. The dissolution of the cuboid into a hollow mold significantly reduces the rigidity with respect to temperature movements compared with the solid material known in the prior art.

Die vertikale Fläche auf der Balkonseite ist verzahnt bzw. aufgeraut, wodurch eine bei horizontaler Bewegung fördernde Zentrierung mit dem Beton des Balkons entsteht.The vertical surface on the balcony side is interlocked or roughened, creating a centering with the concrete of the balcony which promotes horizontal movement.

Auch hier besteht das Kunststoffmaterial aus einem Polyamid-Spritzguss mit fein verteilten Glasfasern, d. h. 30 bis 60 Volumenprozent. Durch die durch den Spritzguss bewirkte Orientierung der Fasern wird eine überdurchschnittliche Festigkeitssteigerung und Querverformungsmöglichkeit erreicht. In die Hohlräume der beiden Drucklager 3 und 3a kann Brandschutzmaterial eingebracht werden.Again, the plastic material consists of a polyamide injection molding with finely divided glass fibers, d. H. 30 to 60 volume percent. Due to the orientation of the fibers caused by injection molding, an above-average increase in strength and transverse deformation capability is achieved. In the cavities of the two thrust bearings 3 and 3a fire protection material can be introduced.

Drucklager 3 b zeigt ein Gitterelement, dessen Außenring 12 mit einer höheren Druckfestigkeit ausgebildet ist als der Kern 13.Thrust bearing 3 b shows a grid element whose outer ring 12 is formed with a higher compressive strength than the core thirteenth

Bei der Ausführungsform der Zahnscheiben gemäß Fig. 4 wird durch die Ausbildung der Zahnscheiben eine Kunststoffrinne geschaffen, in der Zugstäbe 2 eingelegt werden können. Hierfür weisen die Zahnscheiben jeweils aufeinander zugerichtete materialeinheitlich ausgebildete, sehr dünne Stützplatten 8 und 9 auf, durch die die Rinne zur Aufnahme der Zugstäbe 2 geschaffen wird. Die Zugstäbe 2 schaffen die obere Bewehrung.In the embodiment of the toothed disks according to Fig. 4 is created by the formation of the toothed pulleys, a plastic trough, can be inserted into the tie rods 2. For this purpose, the toothed disks each have aligned with one another material-like, very thin support plates 8 and 9, through which the channel for receiving the tension rods 2 is created. The tie rods 2 create the upper reinforcement.

Im unteren Teil der Zahnscheiben 4 sind die aus Kunststoff bestehenden Drucklager 3 vorgesehen, die aber nicht materialeinheitlich mit den Zahnscheiben verbunden sind. Die Drucklager haben mit 50/ 50 mm eine größere Fläche als in Figur 1, da kein Abstand zwischen den Scheiben 4 vorgesehen ist.In the lower part of the toothed discs 4, the existing plastic thrust bearing 3 are provided, which are not connected in the same material with the toothed discs. The thrust bearings have a larger surface area of 50/50 mm than in FIG. 1 because no distance between the discs 4 is provided.

Bei der Ausführungsform gemäß Fig. 5 ist im oberen Bereich der Zahnscheibe ein Zahn 5a vorgesehen, in dem eine Bohrung vorgesehen wird, wobei in diese Bohrung Beton läuft oder auch ein Querstab oder ein Bügel zur Rückwandverankerung eingesteckt werden kann. Auch in diesem Fall sind die Oberseiten der Zähne glatt ausgebildet, so dass hierdurch ein Gleiten gefördert wird.In the embodiment according to Fig. 5 a tooth 5a is provided in the upper region of the toothed disc, in which a bore is provided, in which concrete runs concrete or a transverse rod or a bracket can be inserted to the rear wall anchorage. Also in this case, the tops of the teeth are smooth, so that thereby a slide is promoted.

Die Ausführung gemäß Fig. 6 zeigt eine materialsparende Ausführung der Zahnscheibe mit vorstehenden Rippen, die sich in den Zähnen fortsetzen.The execution according to Fig. 6 shows a material-saving design of the toothed disc with protruding ribs, which continue in the teeth.

Claims (23)

Fertigbauteil als Anschlusselement für eine auskragende Balkonplatte,
bestehend aus einem als vorgefertigtes Bauteil ausgebildeten Dämmkörper (1), wobei in diesen über die Länge verteilt angeordnete Zugstäbe (2) einlegbar sind und im unteren Bereich des Dämmkörpers (1) Ausnehmungen (7) für Drucklager (3, 3a, 3b) mit geringer Wärmeleitfähigkeit und hoher Druckfestigkeit angeordnet sind und über die Außenseite des Dämmkörpers (1) vorspringende zahnartige Verankerungsvorsprünge (5, 6) vorgesehen sind,
dadurch gekennzeichnet,
dass die Verankerungsvorsprünge (Zähne) (5,6) unabhängig von den Drucklagern (3, 3a, 3b) an Zahnscheiben (4) angeordnet sind, die in Schlitzen (13, 13a) des Dämmkörpers (1) über dessen Länge verteilt eingesetzt sind.Prefabricated component as connection element for a projecting balcony slab,
consisting of a designed as a prefabricated component insulating body (1), in which distributed over the length arranged tension rods (2) can be inserted and in the lower region of the insulating body (1) recesses (7) for thrust bearing (3, 3a, 3b) with less Heat conductivity and high pressure resistance are arranged and on the outside of the insulating body (1) projecting tooth-like anchoring projections (5, 6) are provided,
characterized,
in that the anchoring projections (teeth) (5, 6) are arranged independently of the thrust bearings (3, 3a, 3b) on toothed disks (4) which are inserted in slots (13, 13a) of the insulating body (1) distributed over its length. Fertigbauteil als Anschlusselement für eine auskragende Balkonplatte, bestehend aus einem als vorgefertigtes Bauteil ausgebildeten Dämmkörper (1), wobei in diesen über die Länge verteilt angeordnete Zugstäbe (2) einlegbar sind und im unteren Bereich des Dämmkörpers (1) Ausnehmungen (7) für Drucklager (3, 3a, 3b) und in diesen angeordneten Drucklagern (3, 3a, 3b) mit geringer Wärmeleitfähigkeit und hoher Druckfestigkeit angeordnet sind und über die Außenseite des Dämmkörpers (1) vorspringende zahnartige Verankerungsvorsprünge (5,6) vorgesehen sind dadurch gekennzeichnet, dass die Drucklager (3, 3a, 3b) aus einem Kunststoffgitterelement bestehen.Prefabricated as a connecting element for a cantilevered balcony slab, consisting of a trained as a prefabricated component insulating body (1), distributed in this over the length arranged tension rods (2) can be inserted and in the lower region of the insulating body (1) recesses (7) for thrust bearing ( 3, 3a, 3b) and arranged in these pressure bearings (3, 3a, 3b) are arranged with low thermal conductivity and high pressure resistance and on the outside of the insulating body (1) projecting tooth-like anchoring projections (5,6) are provided, characterized in that the Thrust bearing (3, 3a, 3b) consist of a plastic grid element. Fertigbauteil nach Anspruch 1,
dadurch gekennzeichnet, dass wenigstens ein Zahn (5,6) an jeder Zahnscheibe (4) und an jeder Seite vorgesehen ist, wobei diese beiden Zähne (5,6) etwa gleiche Größe aufweisen.Precast component according to claim 1,
characterized in that at least one tooth (5,6) is provided on each toothed disc (4) and on each side, said two teeth (5,6) have approximately the same size. Fertigbauteil nach Anspruch 1,
dadurch gekennzeichnet, dass mindestens zwei Zähne (5,6) übereinander an jeder Seite an jeder Zahnscheibe (4) vorgesehen sind, wobei der obere Zahn (5) und der untere Zahn (6) länger ausgebildet sind als die anderen Zähne (5,6).Precast component according to claim 1,
characterized in that at least two teeth (5,6) are provided one above the other on each side of each toothed disc (4), wherein the upper tooth (5) and the lower tooth (6) are made longer than the other teeth (5,6 ). Fertigbauteil nach einem der Ansprüche 1, 3 und 4,
dadurch gekennzeichnet, dass die Zahnscheiben (4) aus Kunststoff bestehen.Prefabricated component according to one of claims 1, 3 and 4,
characterized in that the toothed discs (4) consist of plastic. Fertigbauteil wenigstens nach Anspruch 5,
dadurch gekennzeichnet, dass das Kunststoffmaterial der Zahnscheiben (4) aus Polyamid-Spritzguss besteht und/oder mit fein verteilten Glasfasern verstärkt ist.Prefabricated component at least according to claim 5,
characterized in that the plastic material of the toothed discs (4) consists of polyamide injection molding and / or is reinforced with finely divided glass fibers. Fertigbauteil wenigstens nach Anspruch 1,
dadurch gekennzeichnet, dass die balkonseitigen Zähne (5) an ihrer vertikalen Stirnfläche aufgeraut bzw. gezahnt ausgebildet sind.Prefabricated component at least according to claim 1,
characterized in that the balcony-side teeth (5) are roughened at its vertical end face or formed serrated. Fertigbauteil wenigstens nach Anspruch 1,
dadurch gekennzeichnet, dass die Zähne (5, 6) an ihrer Oberseite und Unterseite glatt ausgebildet sind.Prefabricated component at least according to claim 1,
characterized in that the teeth (5, 6) are smooth on their top and bottom. Fertigbauteil nach Anspruch 1,
dadurch gekennzeichnet, dass die Festigkeit der Zahnscheiben (4) mindestens acht Mal so hoch ist wie der Beton der Balkondecke.Precast component according to claim 1,
characterized in that the strength of the toothed discs (4) is at least eight times as high as the concrete of the balcony ceiling. Fertigbauteil nach Anspruch 2,
dadurch gekennzeichnet, dass das Drucklager (3,3a) balkonseitig um etwa 5-8 mm gegenüber der vertikalen Stirnseite des Dämmkörpers zurücksteht.Prefabricated component according to claim 2,
characterized in that the thrust bearing (3, 3a) on the balcony side protrudes by approximately 5-8 mm from the vertical end face of the insulating body. Fertigbauteil nach Anspruch 2,
dadurch gekennzeichnet, dass die Festigkeit des Drucklagers (3, 3a, 3b) mindestens acht Mal so hoch ist wie der Beton der Balkondecke.Prefabricated component according to claim 2,
characterized in that the strength of the thrust bearing (3, 3a, 3b) is at least eight times as high as the concrete of the balcony ceiling. Fertigbauteil wenigstens nach Anspruch 2,
dadurch gekennzeichnet, dass das Kunststoffmaterial der Drucklager (3, 3a, 3b) Polyamid-Spritzguss ist mit fein verteilten Glasfasern.Prefabricated component at least according to claim 2,
characterized in that the plastic material of the thrust bearing (3, 3a, 3b) is polyamide injection molded with finely divided glass fibers. Fertigbauteil wenigstens nach Anspruch 2,
dadurch gekennzeichnet, dass das Drucklager (3, 3a, 3b) als Hohlkasten ausgebildet ist mit einem Masse- bzw. Trägheitsmoment horizontal gleich maximal 20 % von vertikal.Prefabricated component at least according to claim 2,
characterized in that the thrust bearing (3, 3a, 3b) is formed as a hollow box with a mass or moment of inertia horizontally equal to a maximum of 20% of vertical. Fertigbauteil wenigstens nach Anspruch 2,
dadurch gekennzeichnet, dass die Hohlräume des als Drucklager ausgebildeten Hohlkastens (3,3a) mit brandbeständigem Material ausgefüllt sind.Prefabricated component at least according to claim 2,
characterized in that the cavities of the formed as a pressure bearing hollow box (3,3a) are filled with fire-resistant material. Fertigbauteil wenigstens nach Anspruch 2,
dadurch gekennzeichnet, dass das Drucklager (3,3a) auf der vertikalen Balkonseite eine Aufrauung bzw. Verzahnung aufweist.Prefabricated component at least according to claim 2,
characterized in that the thrust bearing (3,3a) has a roughening or toothing on the vertical side of the balcony. Fertigbauteil nach Anspruch 2,
dadurch gekennzeichnet, dass die Ausnehmung (7) unten geschlossen ist.Prefabricated component according to claim 2,
characterized in that the recess (7) is closed at the bottom. Fertigbauteil nach Anspruch 1,
dadurch gekennzeichnet, dass die Zähne (5,6) dicker sind als die Zahnscheibe (4).Precast component according to claim 1,
characterized in that the teeth (5,6) are thicker than the toothed disc (4). Fertigbauteil nach Anspruch 1,
dadurch gekennzeichnet, dass die Zähne (5,6) rechteckig ausgebildet sind.Precast component according to claim 1,
characterized in that the teeth (5,6) are rectangular. Fertigbauteil nach Anspruch 1,
dadurch gekennzeichnet, dass der balkonseitige Rand der Zahnscheibe (4) kürzer oder länger als der deckenseitige Rand ausgebildet ist.Precast component according to claim 1,
characterized in that the balcony-side edge of the toothed disc (4) is formed shorter or longer than the ceiling-side edge. Fertigbauteil nach Anspruch 1,
dadurch gekennzeichnet, dass der (die) balkonseitige(n) Zähne (5) gegenüber den deckenseitigen Zähnen (6) um das Maß Z, mindestens 15 mm nach oben versetzt angeordnet sind.Precast component according to claim 1,
characterized in that the (the) balcony-side (n) teeth (5) relative to the cover-side teeth (6) by the dimension Z, at least 15 mm are arranged offset upwards. Fertigbauteil nach Anspruch 1,
dadurch gekennzeichnet, dass das Verhältnis Druckfläche (10) zur der Summe horizontalen Zahnfläche(n) etwa der Quadratwurzel gebildet aus Dämmstoffdicke dividiert durch 80 mm entspricht.Precast component according to claim 1,
characterized in that the ratio pressure surface (10) to the sum of horizontal tooth surface (s) about the square root formed from insulation thickness divided by 80 mm corresponds. Fertigbauteil nach Anspruch 1,
dadurch gekennzeichnet, dass die Zahnscheibe (4) im Bereich der Druckfläche (10) dicker ausgebildet ist.Precast component according to claim 1,
characterized in that the toothed disc (4) in the region of the pressure surface (10) is made thicker. Fertigbauteil nach Anspruch 2,
dadurch gekennzeichnet, dass der Abstand der Ausnehmungen (7) von der Ausnehmung (13) mindestens 1 cm beträgt.Prefabricated component according to claim 2,
characterized in that the distance of the recesses (7) from the recess (13) is at least 1 cm.
EP20110186807 2010-10-27 2011-10-26 Pre-fabricated component for a canteleverd balcony slab Active EP2447430B1 (en)

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EP2821558A1 (en) * 2013-07-03 2015-01-07 F.J. Aschwanden AG Component for the thermally insulated connection of two building sections
EP3202991A1 (en) * 2016-02-03 2017-08-09 HALFEN GmbH Thermally insulating component
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EP1564336A1 (en) 2004-02-11 2005-08-17 HALFEN GmbH & CO. Kommanditgesellschaft Thermally insulating construction element
DE102007050059A1 (en) 2007-10-19 2009-04-30 Kahmer, Herbert, Dr. Prefabricated element for projecting balcony slab, has mounting part formed as hollow body, and including retaining space and thrust bearing provided in lower region of space, and retainer provided in mounting part

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Publication number Priority date Publication date Assignee Title
EP2821558A1 (en) * 2013-07-03 2015-01-07 F.J. Aschwanden AG Component for the thermally insulated connection of two building sections
EP3202991A1 (en) * 2016-02-03 2017-08-09 HALFEN GmbH Thermally insulating component
EP3901385A1 (en) * 2016-02-03 2021-10-27 HALFEN GmbH Thermally insulating component
DE102016121491A1 (en) 2016-11-10 2018-05-17 Dieckhoff Verpackungen Gmbh Connecting component for a projecting concrete slab

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