EP0054538A1 - Lightweight structural element - Google Patents

Lightweight structural element Download PDF

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Publication number
EP0054538A1
EP0054538A1 EP81890200A EP81890200A EP0054538A1 EP 0054538 A1 EP0054538 A1 EP 0054538A1 EP 81890200 A EP81890200 A EP 81890200A EP 81890200 A EP81890200 A EP 81890200A EP 0054538 A1 EP0054538 A1 EP 0054538A1
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EP
European Patent Office
Prior art keywords
fabric
lightweight
lightweight component
interior
construction element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP81890200A
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German (de)
French (fr)
Inventor
Harald Pehr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pehr Holding GmbH
Original Assignee
Pehr Holding GmbH
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Filing date
Publication date
Application filed by Pehr Holding GmbH filed Critical Pehr Holding GmbH
Publication of EP0054538A1 publication Critical patent/EP0054538A1/en
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/40—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of a number of smaller components rigidly or movably connected together, e.g. interlocking, hingedly connected of particular shape, e.g. not rectangular of variable shape or size, e.g. flexible or telescopic panels
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D1/00—Woven fabrics designed to make specified articles
    • D03D1/02—Inflatable articles
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
    • E04C2/284—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating
    • E04C2/296—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating composed of insulating material and non-metallic or unspecified sheet-material
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/34—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D11/00—Double or multi-ply fabrics not otherwise provided for
    • D03D11/02—Fabrics formed with pockets, tubes, loops, folds, tucks or flaps
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2401/00—Physical properties
    • D10B2401/08—Physical properties foamed
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2403/00—Details of fabric structure established in the fabric forming process
    • D10B2403/02—Cross-sectional features
    • D10B2403/021—Lofty fabric with equidistantly spaced front and back plies, e.g. spacer fabrics
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H15/00—Tents or canopies, in general
    • E04H15/20—Tents or canopies, in general inflatable, e.g. shaped, strengthened or supported by fluid pressure
    • E04H2015/202—Tents or canopies, in general inflatable, e.g. shaped, strengthened or supported by fluid pressure with inflatable panels, without inflatable tubular framework
    • E04H2015/205—Tents or canopies, in general inflatable, e.g. shaped, strengthened or supported by fluid pressure with inflatable panels, without inflatable tubular framework made from two sheets with intermediate spacer means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/23—Sheet including cover or casing
    • Y10T428/231—Filled with gas other than air; or under vacuum
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/23—Sheet including cover or casing
    • Y10T428/233—Foamed or expanded material encased
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/23—Sheet including cover or casing
    • Y10T428/239—Complete cover or casing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/23907—Pile or nap type surface or component
    • Y10T428/23914—Interlaminar
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249987—With nonvoid component of specified composition

Definitions

  • the invention relates to a lightweight component which consists of an airtight and pressure-resistant coated support fabric.
  • the support fabric is made of a flexible composite film which has a textile web made of plastic threads, which is coated on both sides with plastic.
  • Two plastic film blanks welded or glued to one another at their edges are filled with a semi-hard or still elastically deformable plastic foam body, which is produced by foaming the plastic material directly into the cavity.
  • This lightweight component has the disadvantage that metal molds are required for its production, which take up the high pressures that occur in the plastic foam filling.
  • metal molds are required for its production, which take up the high pressures that occur in the plastic foam filling.
  • its shape can no longer be changed or folded into a small space for transport.
  • Another known lightweight component is composed of two identical parts. Each part has a fabric underlay on which a row of parallel strips of polyurethane foam of triangular, rectangular or trapezoidal shape is made by means of a fabric sheet is attached according to the cross section. The fabric web is connected to the fabric underlay by seams between the individual strips. The two parts are now placed on top of one another, their strips interlocking like teeth. Now the lightweight construction element is provided with two cover layers made of fabric and soaked with liquid plastic, to which a catalyst for hardening the plastic has been added.
  • This lightweight component can also not be folded when it is no longer to be used.
  • a lightweight construction element provided with glass fiber reinforced polyester plates in which the space delimited by the polyester plates consists of a framework structure in the form of coils made of metal wire or of glass fiber reinforced polyester or of a mesh consisting of such coils.
  • the individual coils are embedded in a fabric layer soaked in polyester.
  • cushion elements have been proposed for a variety of technical purposes. These cushion elements were produced from a film material, the film edges being connected to one another by sewing, gluing or welding.
  • Such pillow elements can generally be folded together when not in use in a small space, but they have the disadvantage that their shape depends to a certain extent on the pressure of the pumped-in air or the like. As a result, they cannot be used as plate-shaped or shell-shaped lightweight components have precisely specified dimensions formed, especially since larger areas inevitably bulge under the pressure of the pressed-in pressure medium.
  • the invention aims to eliminate the disadvantages of the known embodiments and to create a lightweight construction element of the type outlined which, despite its low weight, has great dimensional stability and is simple in its construction and inexpensive to manufacture, for which no expensive ones are involved Metal molds should be required.
  • the surfaces of the lightweight component should not bend outwards when the interior is pressurized.
  • the support fabric consists of an uncut velvet fabric, the interior of the velvet fabric being pressurizable by the airtight coating.
  • the vertical threads connecting the two fabric webs keep the two fabric webs at a predetermined distance when the interior of the velvet fabric is filled with a pressure medium.
  • a gaseous or liquid medium is used as the pressure medium, it is possible to relieve the pressure in the interior of the lightweight component when the latter is no longer to be used and then to fold the lightweight component together. This makes it possible to save storage space or transport space.
  • the assembly and disassembly of the lightweight component is extremely simple and can easily be carried out by auxiliary staff without special training.
  • a curing plastic foam can be used as pressure medium. On the one hand, this ensures sufficient dimensional stability of the lightweight component and, on the other hand, a relatively low weight of the same.
  • the invention provides that at least one feed pipe protrudes into the interior of the lightweight component. This ensures the supply line and an even distribution of any pressure medium. It is also possible to connect several lightweight components in series using the supply pipes and to feed them from a single pressure medium source.
  • the lightweight component according to the invention can be used to advantage in a wide variety of fields. It can be used in the manufacture of self-supporting halls, tents, flexible partition walls of all kinds, formwork, cladding of containers, round silos, formwork elements for the construction industry, etc. However, the use of the lightweight component as packaging material is also contemplated, especially since here it is possible to transport the empties back in a cost-saving manner when folded.
  • the distance 5 of the upper fabric web 1 from the lower fabric web 2 can preferably be between 2 and 20 mm.
  • the two fabric sheets of the lightweight component are provided with an air-impermeable coating 6.
  • This coating which is generally a vulcanized-on rubber coating, can be impact-resistant, non-slip, smooth, rough, cold or heat-resistant, chemical-resistant, insulating, etc., depending on the requirements.
  • the fabric webs of the lightweight construction element are connected to one another by seams 4 on both sides.
  • the air-impermeable coating 6 it is possible to pressurize the interior 7 of the lightweight component, thereby making the lightweight component a stable structure. Gases such as air, helium, etc. or liquids are primarily suitable as pressure medium. However, it is also possible to fill the interior 7 with a foam, for example with polyurethane foam, which hardens itself after being filled.
  • the two lightweight components 10 and 11 are connected to one another by an adhesive layer 9. Instead of this adhesive layer 9, however, seams can also occur. Pressurize the interior of the two lightweight components 10 and 11 at the same time To be able to, these interiors are interconnected by means of an angularly bent tube 12. Another straight pipe 12 ′ serves to introduce the pressure medium or the foam into the interior of the lightweight component 11.
  • the hall shown in FIG. 4 made from a lightweight construction element according to the invention, has a semicircular cross section, with flanges 14, which rest on the foundation 13, being attached to the ends of the curved lightweight construction element.
  • the two flanges 14 have cover strips 16 on their upper side, which are held on the foundation 13 by means of screws 17.
  • a pressure medium is also supplied to the interior of the lightweight component via a line in which a manually operable valve 8 is installed.
  • This valve 8 can be connected via a supply line 18 to a pressure medium source, for example to a pump or to a compressed air bottle.
  • the pressure medium contained in the lightweight component can be released into the open via the valve 8.
  • the hall shown can be open on its front side, since in contrast to an air-filled hall no airlock is necessary here.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Textile Engineering (AREA)
  • Tents Or Canopies (AREA)

Abstract

Ein Leichtbauelement weist ein luftdicht und druckbeständig beschichtetes Stützgewebe aus ungeschnittenem Samtgewebe auf, dessen Innenraum unter Druck setzbar ist. Durch die die beiden äußeren Gewebebahnen verbindenden Fäden wird bei eingefülltem Druckmittel ein vorgegebener Abstand der Gewebebahnen eingehalten und eine hohe Stabilität des Elementes gewährleistet.A lightweight construction element has an airtight and pressure-resistant coated support fabric made of uncut velvet fabric, the interior of which can be pressurized. Due to the threads connecting the two outer fabric webs, a predetermined distance between the fabric webs is maintained when the pressure medium is filled in, and a high stability of the element is ensured.

Description

Die Erfindung bezieht sich auf ein Leichtbauelement, welches aus einem luftdicht und druckbeständig beschichteten Stützgewebe besteht.The invention relates to a lightweight component which consists of an airtight and pressure-resistant coated support fabric.

Bei einem bekannten Leichtbauelement dieser Art ist das Stützgewebe aus einer flexiblen Verbundstofffolie hergestellt, welche eine aus Kunststoffäden gefertigte Textilbahn aufweist, die beidseitig mit Kunststoff beschichtet ist. Zwei an ihren Rändern miteinander fest verschweißte oder verklebte Kunststoff-Folienzuschnitte werden mit einem halbharten oder noch ela-' stisch verformbaren Kunststoffschaumkörper ausgefüllt, der durch direktes Einschäumen des Kunststoffmaterials in den Hohlraum hergestellt wird.In a known lightweight construction element of this type, the support fabric is made of a flexible composite film which has a textile web made of plastic threads, which is coated on both sides with plastic. Two plastic film blanks welded or glued to one another at their edges are filled with a semi-hard or still elastically deformable plastic foam body, which is produced by foaming the plastic material directly into the cavity.

Dieses Leichtbauelement hat den Nachteil, daß für seine Herstellung Metallformen erforderlich sind, welche die bei der Kunststoffschaumfüllung auftretenden hohen Drücke aufnehmen. Außerdem kann das Leichtbauelement, nachdem es fertiggestellt ist, in seiner Form nicht mehr verändert bzw. zum Transport nicht auf einen kleinen Raum zusammengelegt werden.This lightweight component has the disadvantage that metal molds are required for its production, which take up the high pressures that occur in the plastic foam filling. In addition, once the lightweight component has been completed, its shape can no longer be changed or folded into a small space for transport.

Ein anderes bekanntes Leichtbauelement ist aus zwei gleichen Teilen zusammengesetzt. Jeder Teil hat eine Gewebeunterlage, auf der mittels einer Gewebebahn eine Reihe von parallelen Leisten aus PolyurethanSchaum von dreieckigem, rechteckigem oder trapezförmigem Querschnitt befestigt ist. Zwischen den einzelnen Leisten ist die Gewebebahn mit der Gewebeunterlage durch Nähte verbunden. Die beiden Teile werden nun aufeinandergelegt, wobei ihre Leisten nach Art von Zähnen ineinandergreifen. Nun wird das Leichtbauelement mit zwei Deckschichten aus Gewebe versehen und mit flüssigem.;Kunststoff getränkt, dem ein Katalysator zum Aushärten des Kunststoffes zugesetzt ist.Another known lightweight component is composed of two identical parts. Each part has a fabric underlay on which a row of parallel strips of polyurethane foam of triangular, rectangular or trapezoidal shape is made by means of a fabric sheet is attached according to the cross section. The fabric web is connected to the fabric underlay by seams between the individual strips. The two parts are now placed on top of one another, their strips interlocking like teeth. Now the lightweight construction element is provided with two cover layers made of fabric and soaked with liquid plastic, to which a catalyst for hardening the plastic has been added.

Auch dieses Leichtbauelement kann, wenn es nicht mehr verwendet werden soll, nicht zusammengelegt werden.This lightweight component can also not be folded when it is no longer to be used.

Weiters ist ein mit glasfaserverstärkten Polyesterplatten versehenes Leichtbauelement bekannt, bei dem der von den Polyesterplatten begrenzte Raum mit einer Gerüststruktur in Form von Wendeln aus Metalldraht oder aus glasfaserverstärktem Polyester oder aus einem aus solchen Wendeln bestehenden Geflecht besteht. Die einzelnen Wendel sind dabei in einer mit Polyester getränkten Gewebeschicht eingebettet. Diese Ausbildung erhöht zwar die Belastungsfähigkeit des Leichtbauelementes, die Möglichkeit eines Zusammenlegens des Leichtbauelementes, wenn dieses nicht mehr benützt werden soll bzw. für den Transport, ist jedoch auch in diesem Falle nicht gegeben.Furthermore, a lightweight construction element provided with glass fiber reinforced polyester plates is known, in which the space delimited by the polyester plates consists of a framework structure in the form of coils made of metal wire or of glass fiber reinforced polyester or of a mesh consisting of such coils. The individual coils are embedded in a fabric layer soaked in polyester. Although this design increases the load capacity of the lightweight component, the possibility of collapsing the lightweight component when it is no longer to be used or for transportation is not given in this case either.

Schließlich wurden noch Kissenelemente mit Luftfüllung für die verschiedensten technischen Zwecke vorgeschlagen. Diese Kissenelemente wurden aus einem Folienmaterial hergestellt, wobei die Folienränder durch Nähen, Kleben oder Verschweißen miteinander verbunden wurden.Finally, air-filled cushion elements have been proposed for a variety of technical purposes. These cushion elements were produced from a film material, the film edges being connected to one another by sewing, gluing or welding.

Derartige Kissenelemente lassen sich zwar im allgemeinen bei Nichtgebrauch auf kleinen Raum zusammenlegen, sie haben jedoch den Nachteil, daß ihre Form in gewissen Grenzen vom Druck der eingepumpten Luft od. dgl. abhängig ist und daß sie sich infolgedessen nicht als plattenförmige bzw. schalenförmige Leichtbauelemente mit genau vorgegebenen Abmessungen ausbilden lassen, zumal sich größere Flächen unter dem Druck des eingepreßten Druckmittels zwangsläufig ausbeulen.Such pillow elements can generally be folded together when not in use in a small space, but they have the disadvantage that their shape depends to a certain extent on the pressure of the pumped-in air or the like. As a result, they cannot be used as plate-shaped or shell-shaped lightweight components have precisely specified dimensions formed, especially since larger areas inevitably bulge under the pressure of the pressed-in pressure medium.

Die Erfindung setzt sich zum Ziel, die angeführten Nachteile der bekannten Ausführungsformen zu beseitigen und ein Leichtbauelement der eingangs umrissenen Art zu schaffen, das trotz seines geringen Gewichtes eine große Formbeständigkeit besitzt und einfach in seinem Aufbau und billig in seiner Herstellung ist, für die keine kostspieligen Metallformen erforderlich sein sollen. Außerdem sollen sich die Flächen des Leichtbauelementes beim Unter-Druck-Setzen des Innenraumes nicht nach außen hin ausbiegen.The invention aims to eliminate the disadvantages of the known embodiments and to create a lightweight construction element of the type outlined which, despite its low weight, has great dimensional stability and is simple in its construction and inexpensive to manufacture, for which no expensive ones are involved Metal molds should be required. In addition, the surfaces of the lightweight component should not bend outwards when the interior is pressurized.

Dieses Ziel wird gemäß der Erfindung vor allem dadurch erreicht, daß das Stützgewebe aus einem ungeschnittenen Samtgewebe besteht, wobei durch die luftdichte Beschichtung der Innenraum des Samtgewebes unter Druck setzbar ist. Durch die die beiden Gewebebahnen verbindenden senkrechten Fäden werden die beiden Gewebebahnen in einem vorgegebenen Abstand gehalten, wenn der Innenraum des Samtgewebes mit einem Druckmittel gefüllt ist. Durch diese senkrechten Fäden wird eine Auswölbung der Gewebebahnen während des Füllvor- ganges und nach dessen Abschluß zuverlässig verhindert. Gleichzeitig ist eine hohe Stabilität des gefüllten Leichtbauelementes gewährleistet.This aim is achieved according to the invention above all in that the support fabric consists of an uncut velvet fabric, the interior of the velvet fabric being pressurizable by the airtight coating. The vertical threads connecting the two fabric webs keep the two fabric webs at a predetermined distance when the interior of the velvet fabric is filled with a pressure medium. By this vertical threads a bulge of the fabric sheets during Füllvor is - passage and after its completion reliably prevented. At the same time, a high stability of the filled lightweight component is guaranteed.

Wird als Druckmittel ein gasförmiges oder flüssiges Medium verwendet, so ist es möglich, den Innenraum des Leichtbauelementes, wenn letzteres nicht mehr verwendet werden soll, vom Druck zu entlasten und danach das Leichtbauelement zusammenzulegen. Dadurch ist es möglich, Lagerraum bzw. Transportraum einzusparen. Die Montage und die Demontage des Leichtbauelementes ist äußerst einfach und kann ohne weiteres von Hilfskräften ohne besondere Einschulung durchgeführt werden.If a gaseous or liquid medium is used as the pressure medium, it is possible to relieve the pressure in the interior of the lightweight component when the latter is no longer to be used and then to fold the lightweight component together. This makes it possible to save storage space or transport space. The assembly and disassembly of the lightweight component is extremely simple and can easily be carried out by auxiliary staff without special training.

Ist jedoch beabsichtigt, das Leichtbauelement nur ein einziges Mal zu verwenden, so kann nach einer weiteren Ausbildung der Erfindung als Druckmittel ein aushärtender Kunststoffschaum verwendet werden. Dieser gewährleistet einerseits eine ausreichende Formstabilität des Leichtbauelementes und andererseits ein relativ niedriges Gewicht desselben.However, if it is intended to use the lightweight component only once, then after a white teren embodiment of the invention, a curing plastic foam can be used as pressure medium. On the one hand, this ensures sufficient dimensional stability of the lightweight component and, on the other hand, a relatively low weight of the same.

Schließlich sieht die Erfindung vor, daß in den Innenraum des Leichtbauelementes mindestens ein Zuleitungsrohr ragt. Durch dieses ist die Zuleitung und eine gleichmäßige Verteilung jeglichen Druckmittels gewährleistet. Außerdem besteht die Möglichkeit, mehrere Leichtbauelemente mittels der Zuleitungsrohre hintereinanderzuschalten und von einer einzigen Druckmittelquelle zu speisen.Finally, the invention provides that at least one feed pipe protrudes into the interior of the lightweight component. This ensures the supply line and an even distribution of any pressure medium. It is also possible to connect several lightweight components in series using the supply pipes and to feed them from a single pressure medium source.

Das erfindungsgemäße Leichtbauelement läßt sich auf den verschiedensten Gebieten mit Vorteil einsetzen. So kann es bei der Herstellung von selbsttragenden Hallen, von Zelten, von flexiblen Trennwänden jeder Art, von Verschalungen, von Verkleidungen von Behältern, von Rundsilos, von Schalungselementen für die-Bauindustrie usw. Verwendung finden. Aber auch an einen Einsatz des Leichtbauelementes als Verpackungsmaterial ist gedacht, zumal hier die Möglichkeit gegeben ist, das Leergut in zusammengelegtem Zustand kostensparend zurücktransportieren zu können.The lightweight component according to the invention can be used to advantage in a wide variety of fields. It can be used in the manufacture of self-supporting halls, tents, flexible partition walls of all kinds, formwork, cladding of containers, round silos, formwork elements for the construction industry, etc. However, the use of the lightweight component as packaging material is also contemplated, especially since here it is possible to transport the empties back in a cost-saving manner when folded.

In der Zeichnung sind verschiedene Ausführungsbeispiele von erfindungsgemäßen Leichtbauelementen rein schematisch dargestellt.Various exemplary embodiments of lightweight components according to the invention are shown purely schematically in the drawing.

  • Fig. 1 zeigt den prinzipiellen Aufbau eines erfindungsgemäßen Leichtbauelementes im Schaubild,1 shows the basic structure of a lightweight component according to the invention in the diagram,
  • Fig. 2 eine gegenüber Fig. 1 etwas abgeänderte Ausführungsform einesLeichtbauelementes in teilweise geschnittenem Schaubild,2 shows a slightly modified embodiment of a lightweight component in a partially sectioned diagram,
  • Fig. 3 zwei zu einer Einheit miteinander verbundene Leichtbauelemente in axonometrischer Darstellung undFig. 3 two lightweight components connected to each other in an axonometric representation and
  • Fig. 4 eine aus einem erfindungsgemäßen Leichtbauelement gefertigte Halle mit Halbkreisquerschnitt in teilweise weggebrochener Schrägansicht.Fig. 4 is a hall made from a lightweight component according to the invention with a semicircular cross section in a partially broken oblique view.

Das erfindungsgemäße Leichtbauelement nach Fig. 1 besteht aus einer oberen Gewebebahn 1 und einer unteren Gewebebahn 2, welche Gewebebahnen an ihrer Außenseite druckbeständig beschichtet und nach Art einesungeschnittenen Samtgewebes durch senkrechte Fäden 3 miteinander verbunden sind. Die Zahl der Fäden 3 beträgt etwa 30 bis 20'0 pro cm2. Der Abstand 5 der oberen Gewebebahn 1 von der unteren Gewebebahn 2 kann vorzugsweise zwischen 2 und 20 mm liegen.1 consists of an upper fabric sheet 1 and a lower fabric sheet 2, which fabric sheets are pressure-resistant coated on the outside and are connected to each other in the manner of an uncut velvet fabric by vertical threads 3. The number of threads 3 is approximately 30 to 20 ' 0 per cm 2 . The distance 5 of the upper fabric web 1 from the lower fabric web 2 can preferably be between 2 and 20 mm.

Auch gemäß Fig. 2 sind die beiden Gewebebahnen des Leichtbauelementes mit einer luftundurchlässigen Beschichtung 6 versehen. Diese Beschichtung, welche im allgemeinen eine aufvulkanisierte Gummibeschichtung ist, kann je nach den Erfordernissen schlagfest, rutschfest, glatt, rauh, kälte- oder hitzebeständig, chemikalienbeständig, isolierend usw. ausgebildet sein. Auf den beiden Seiten sind die Gewebebahnen des Leichtbauelementes durch Nähte 4 miteinander verbunden. Infolge der luftundurchlässigen Beschichtung 6 ist es möglich, den Innenraum 7 des Leichtbauelementes unter Druck zu setzen und dadurch das Leichtbauelement zu einem stabilen Gebilde zu machen. Als Druckmittel bieten sich dabei in erster Linie Gase wie Luft, Helium usw. oder Flüssigkeiten an. Es ist jedoch auch möglich, den Innenraum 7 mit einem Schaumstoff, beispielsweise mit Polyurethanschaum zu füllen, der nach dem Einfüllen von selbst aushärtet.2, the two fabric sheets of the lightweight component are provided with an air-impermeable coating 6. This coating, which is generally a vulcanized-on rubber coating, can be impact-resistant, non-slip, smooth, rough, cold or heat-resistant, chemical-resistant, insulating, etc., depending on the requirements. The fabric webs of the lightweight construction element are connected to one another by seams 4 on both sides. As a result of the air-impermeable coating 6, it is possible to pressurize the interior 7 of the lightweight component, thereby making the lightweight component a stable structure. Gases such as air, helium, etc. or liquids are primarily suitable as pressure medium. However, it is also possible to fill the interior 7 with a foam, for example with polyurethane foam, which hardens itself after being filled.

Nach Fig. 3 sind die beiden Leichtbauelemente 10 und 11 durch eine Klebstoffschicht 9 miteinander verbunden. Anstelle dieser Klebstoffschicht 9 können jedoch auch Nähte treten. Um die Innenräume der beiden Leichtbauelemente 10 und 11 gleichzeitig unter Druck setzen zu können, sind diese Innenräume mittels eines winkelförmig gebogenen Rohres 12 miteinander verbunden. Ein weiteres, gerades Rohr 12' dient zum Einleiten des Druckmittels bzw. des Schaumstoffes in den Innenraum des Leichtbauelementes 11.3, the two lightweight components 10 and 11 are connected to one another by an adhesive layer 9. Instead of this adhesive layer 9, however, seams can also occur. Pressurize the interior of the two lightweight components 10 and 11 at the same time To be able to, these interiors are interconnected by means of an angularly bent tube 12. Another straight pipe 12 ′ serves to introduce the pressure medium or the foam into the interior of the lightweight component 11.

Die in Fig. 4 dargestellte, aus einem erfindungsgemäßen Leichtbauelement hergestellte Halle besitzt einen halbkreisförmigen Querschnitt, wobei an den Enden des gewölbten Leichtbauelementes Flanschen 14 angesetzt sind, welche am Fundament 13 aufliegen. Die beiden Flanschen 14 tragen an ihrer Oberseite Abdeckleisten 16, welche mittels Schrauben 17 an dem Fundament 13 festgehalten sind. Selbstverständlich wird auch hier dem Innenraum des Leichtbauelementes ein Druckmittel über eine Leitung zugeführt, in welcher ein von Hand betätigbares Ventil 8 eingebaut ist. Dieses Ventil 8 ist über eine Zuleitung 18 an eine Druckmittelquelle, beispielsweise an eine Pumpe oder an eine Preßluftflasche anschließbar. Außerdem kann über das Ventil 8 das im Leichtbauelement enthaltene Druckmittel ins Freie abgelassen werden. Die dargestellte Halle kann an ihrer Stirnseite offen sein, da hier im Gegensatz zu einer Traglufthalle keine Luftschleuse notwendig ist.The hall shown in FIG. 4, made from a lightweight construction element according to the invention, has a semicircular cross section, with flanges 14, which rest on the foundation 13, being attached to the ends of the curved lightweight construction element. The two flanges 14 have cover strips 16 on their upper side, which are held on the foundation 13 by means of screws 17. Of course, a pressure medium is also supplied to the interior of the lightweight component via a line in which a manually operable valve 8 is installed. This valve 8 can be connected via a supply line 18 to a pressure medium source, for example to a pump or to a compressed air bottle. In addition, the pressure medium contained in the lightweight component can be released into the open via the valve 8. The hall shown can be open on its front side, since in contrast to an air-filled hall no airlock is necessary here.

Selbstverständlich ist die Erfindung keineswegs an die in der Zeichnung dargestellten und im vorstehenden beschriebenen Ausführungsbeispiele gebunden. Vielmehr sollen auch Abänderungen derselben unter den Schutz der Erfindung fallen. Beispielsweise wäre es möglich, anstelle einer Gummibeschichtung eine flexible Kunststoffbeschichtung auf die beiden Gewebebahnen des Leichtbauelementes aufzubringen.Of course, the invention is by no means bound to the exemplary embodiments shown in the drawing and described above. Rather, modifications of the same should also come under the protection of the invention. For example, instead of a rubber coating, it would be possible to apply a flexible plastic coating to the two fabric webs of the lightweight component.

Claims (3)

1. Leichtbauelement, bestehend aus einem luftdicht und druckbeständig beschichteten Stützgewebe, dadurch gekennzeichnet , daß das Stützgewebe aus einem ungeschnittenen Samtgewebe (1, 2, 3) besteht, wobei durch die luftdichte Beschichtung (6) der Innenraum (7) des Samtgewebes unter Druck setzbar ist.1. Lightweight construction element consisting of an airtight and pressure-resistant coated support fabric, characterized in that the support fabric consists of an uncut velvet fabric (1, 2, 3), the interior (7) of the velvet fabric being pressurizable by the airtight coating (6) is. 2. Leichtbauelement nach Anspruch 1, dadurch gekennzeichnet, daß als Druckmittel ein aushärtender Kunststoffschaum vorgesehen ist.2. Lightweight construction element according to claim 1, characterized in that a hardening plastic foam is provided as pressure medium. 3. Leichtbauelement nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß in den Innenraum (7) mindestens ein Zuleitungsrohr (12, 12') ragt.3. Light construction element according to claim 1 or 2, characterized in that in the interior (7) at least one feed pipe (12, 12 ') protrudes.
EP81890200A 1980-12-16 1981-12-15 Lightweight structural element Withdrawn EP0054538A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0611480A AT369084B (en) 1980-12-16 1980-12-16 LIGHTWEIGHT ELEMENTS
AT6114/80 1980-12-16

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JP (1) JPS57127052A (en)
AT (1) AT369084B (en)
DK (1) DK554981A (en)

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AT369084B (en) 1982-12-10
US4409271A (en) 1983-10-11
JPS57127052A (en) 1982-08-07
ATA611480A (en) 1982-04-15
DK554981A (en) 1982-06-17

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