EP3918153B1 - Transport anchor having a pressure element and method of producing a transport anchor - Google Patents

Transport anchor having a pressure element and method of producing a transport anchor Download PDF

Info

Publication number
EP3918153B1
EP3918153B1 EP20702450.6A EP20702450A EP3918153B1 EP 3918153 B1 EP3918153 B1 EP 3918153B1 EP 20702450 A EP20702450 A EP 20702450A EP 3918153 B1 EP3918153 B1 EP 3918153B1
Authority
EP
European Patent Office
Prior art keywords
pressure element
anchor
legs
end caps
transportation
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.)
Active
Application number
EP20702450.6A
Other languages
German (de)
French (fr)
Other versions
EP3918153A1 (en
EP3918153C0 (en
Inventor
Renzo De Bondt
Tom De Bondt
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.)
Econac bvba
Original Assignee
Econac bvba
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Econac bvba filed Critical Econac bvba
Publication of EP3918153A1 publication Critical patent/EP3918153A1/en
Application granted granted Critical
Publication of EP3918153B1 publication Critical patent/EP3918153B1/en
Publication of EP3918153C0 publication Critical patent/EP3918153C0/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/14—Conveying or assembling building elements
    • E04G21/142—Means in or on the elements for connecting same to handling apparatus
    • E04G21/145—Means in or on the elements for connecting same to handling apparatus specific for hollow plates

Definitions

  • the invention relates to a method for producing such a transport anchor.
  • Such transport and laying anchors are used for the transport of so-called double and sandwich walls. They are usually cast into concrete walls in the precast concrete industry and are used on the one hand as a transport device to which lifting gear can be hung, but on the other hand as spacers during the concreting process. Sandwich or sandwich concrete walls have insulation between the concrete walls.
  • double wall are used as synonyms for double walls and sandwich walls.
  • the pressure element for absorbing forces is arranged between them.
  • a transport anchor in which the pressure element is made of steel and welded onto the anchor legs.
  • the large forces mentioned act on this weakened area when the double walls are being transported, as a result of which there is a very high risk of the weld seams tearing and the subsequent excessive deformation of the transport anchor.
  • a similar pressure element made of steel is known from the publication EP 3 029 220 A1 out.
  • the pressure element is preferred used by spot welding.
  • the welding process also changes and weakens the surrounding material locally, which also reduces stability. In both cases, the welded joints can cause the transport anchor to break out of the concrete, which in turn can cause the precast concrete element to fall.
  • the DE 20 2014 103 774 U1 describes a transport anchor in which the pressure element made of steel is slidably held on the base body.
  • the pressure element should remain in its position due to the diameter of through-openings unless larger forces are acting from the outside: However, this certainly cannot be guaranteed. In this respect, the pressure element can also move during installation, which leads to corresponding disadvantages.
  • lifting anchors are known that use a flexible material, such as wood, instead of a pressure element made of steel. Wood is able to absorb the forces that occur, but the disadvantage is that wood can absorb liquid, which on the one hand causes the pressure element to rot, but on the other hand can also freeze and expand. Both are disadvantageous, since damage to the double wall or the precast concrete part can also occur afterwards.
  • the DE 10 2005 009708 A1 describes, for example, a variant in which the pressure element can be made of textile-reinforced concrete. However, it is also essential in this variant that the pressure element should be flexible in response to transverse pressure. In this respect, detachment from the double wall is also possible with this variant.
  • the FR2948139 discloses a transport anchor according to the preamble of claims 1 or 2.
  • the object of the invention is to create a transport anchor that does not have the disadvantages mentioned above.
  • the lifting anchor should nevertheless be able to be produced inexpensively and enable safe use.
  • the transport anchor should not lead to damage or disadvantages even if it remains in the double wall later.
  • the task remains is to propose a method for the production of such a transport anchor.
  • a transport anchor according to claim 1, wherein, among other things, the pressure element is formed from a fiber-reinforced plastics material and has end caps at its two ends, which are each placed with an open side on a free end of the cylindrical pressure element and each have openings, through each of which an anchor leg extends.
  • the pressure element made of fiber-reinforced plastic composite material according to the invention is also advantageously watertight, thus preventing the transfer of moisture via the pressure element from one double wall to the other. This is not the case, in particular, with pressure elements made of wood and with tubular, internally hollow pressure elements made of steel.
  • the object is also achieved by a lifting anchor according to claim 2, with the pressure element being made of steel and having end caps at both of its ends, each with an open side on a free end of the cylindrical pressure element are placed and each have openings through which an anchor leg extends.
  • the pressure element formed according to this aspect of the teaching from steel instead of fiber-reinforced plastic material has the same advantages with regard to the entire lifting anchor with regard to the connection of the pressure element to the anchor legs, since the connection of the pressure element formed in this embodiment from steel instead of fiber-reinforced plastic material to the anchor legs with the previously described embodiment can be done identically designed end caps.
  • the pressure element can have any desired cross section; round, oval, rectangular or triangular cross sections are particularly suitable.
  • the pressure element can have a groove on its free end faces for each anchor leg, in which the axle leg held by the end caps rests. This further increases the stability.
  • fiber-reinforced plastic no thermal bridges can form. It has a relatively low mass, does not rust and, in contrast to concrete, is very robust.
  • the mechanical and thermal properties of fiber-reinforced plastics can be adjusted using a large number of parameters.
  • the fiber angle, the fiber volume fraction, the layer sequence and much more can be varied.
  • organic, inorganic or also natural fibers can be used.
  • the length of the fibers used can also be varied.
  • the production of the transport anchor according to the invention can be carried out particularly easily and quickly, in particular by using the advantageous end caps.
  • the end caps are designed as pipe sections which have two opposite openings.
  • the end caps can also be cup-shaped, in which case they have a bottom surface and an adjoining peripheral surface.
  • the cup opening is arranged opposite the bottom surface.
  • Two opposing openings are provided in the end caps or in the peripheral surface of the end caps, through which an anchor leg extends in the assembled final state.
  • the end caps are preferably made of a durable plastic.
  • the end caps When assembling the transport anchor, the end caps are placed on the end of the pressure element made of fiber-reinforced plastic via one of their openings.
  • the anchor legs are each through the openings of End caps are fed through and the pressure element is pushed to the desired position.
  • the inside diameters of the end caps are designed to be somewhat smaller than the outside diameters of the pressure element at the ends. If the elements to be assembled are in the correct position, they are mechanically pressed together, so the end caps are pushed onto the free ends of the pressure element. The elasticity of the end caps is sufficient for them to expand sufficiently.
  • the anchor legs are thus also held firmly in the end caps. The local changes in the welding area usually caused by welding pressure elements to the anchor legs and the breaking of weld seams are excluded.
  • the pressure element can be arranged in the area of the transport anchor in which the anchor legs run essentially parallel to one another.
  • the pressure element can preferably also be arranged in a transition area between the arcuate central section and the anchor legs extending parallel to one another.
  • an arrangement within the arcuate central section is also conceivable.
  • the central section can be formed by two straight leg sections running towards one another, which are connected to one another via a relatively short arc.
  • the central portion has an approximately triangular shape overall.
  • the arched base body can also run curved over its entire length, starting from the transition area.
  • the anchor legs can be straight over their entire length, but alternatively they can also have free end regions which are formed out of the otherwise straight extension of the anchor legs.
  • the reshaping can take place in all directions, for example towards one another, away from one another, or parallel to one another, or in different directions.
  • the base body is usually formed from solid steel or a single strand of steel. In a particularly advantageous embodiment variant, however, this can also consist of a wire or wire cable.
  • a stainless steel rope or cable is preferable, for example a galvanized steel cable, but it is also conceivable to use a rope with sufficient tensile strength, for example made of Kevlar or carbon.
  • Using a cable or rope makes manufacturing easier and faster due to the flexibility. Since a wire or steel cable consists of a large number of strands or wires, the use of the transport anchor according to the invention is safer. Usually not all the strands tear at the same time, but rather individually, so that there is often still time to detach the double walls before the rope tears completely.
  • the openings for inserting the base body or the armature legs can preferably run obliquely or be offset from one another, so that the armature legs are passed through the pressure element at an angle and do not run parallel to one another. In the direction of their free ends, the distance between the two anchor legs increases. This is particularly advantageous when the base body is formed by a flexible steel cable. In this case, the arched central section deforms above the pressure element when the component to be transported is lifted. The arcuate central portion is stretched. Under load, the armature legs thus run straight through the pressure element due to the oblique openings.
  • the pressure element is either stationary, ie immovably connected to the base body, but it can also be provided that this is displaceable along the anchor legs.
  • the different connection can be determined by the production method according to the invention by selecting the pressure via which the end caps are pressed onto the pressure element in the axial direction, with which they therefore clamp the steering knuckle.
  • the base body of a transport anchor according to the invention can preferably be shortened in that the free ends have cross-sectional reinforcements, for example in the form of tube sections or cylindrical bodies. This improves the connection of the base body or the anchor legs with the respective double wall.
  • the cross-sectional reinforcements can also be made of a different material.
  • a fixed or detachable fixing element can advantageously also be provided, which runs approximately parallel to the pressure element between the axle legs.
  • This can also be made of steel, but also made of plastic or another suitable material.
  • the free ends of the anchor legs are tapered. This makes it easier to insert the anchors into the double walls, especially if they have steel reinforcement.
  • FIGS. 1 to 6 show different variants of a transport anchor 20.
  • the figures and embodiments shown serve for explanation, individual features of the individual embodiments can be combined with features of other embodiments.
  • the transport anchor 20 has a base body 22 with an arcuate central section 24 and adjoining anchor legs 26 running parallel to one another. Furthermore, a pressure element 28 arranged between the armature legs 26 is shown.
  • the base body is preferably made of steel, a steel cable or a cable made of another resistant, suitable material.
  • the pressure element 28 is formed from a fiber plastic composite material.
  • the pressure element 28 can be arranged at various points along the course of the base body.
  • the figures 1 and 2 show an example of a possible positioning, namely adjacent to a transition area between the armature legs 26 and the arched central section 24.
  • the pressure element 28 can be arranged in the transition area, at a greater distance from the transition area 30 or also within the arched central section 24.
  • the arcuate central portion 24 may have a generally triangular shape formed by two straight leg portions 32 merging into a relatively narrow arc 34 . This is the case, for example, with a base body 22 made of steel or steel wire ( figure 1 ). As an alternative to this, the arched central section 24 can also be designed arched overall, in particular when using a steel cable ( figure 2 ).
  • the end caps 62 close with openings 52 for inserting the armature leg 26 ends.
  • the end caps 62 are essentially tubular and are pushed onto the ends of the pressure element 28 with one of their open sides. Due to the fact that the inner diameter of the end caps 62 is smaller than the outer diameter of the pressure element 28, the end caps 62 must be pressed or pressed onto the pressure element 28. They widen as a result and are held firmly and immovably on the pressure element 28 after assembly due to their elasticity.
  • the openings 52 through which the armature legs 26 extend are arranged exactly opposite one another in the exemplary embodiment shown, so that the armature legs 26 run parallel to one another and essentially at right angles to the main extension of the pressure element 28 .
  • the openings 52 can also be arranged at an angle or offset from one another, so that the armature legs 26 are guided through the end caps 62 at an angle and do not run parallel to one another in the further course.
  • FIG. 3 12 is an enlarged view of end cap 62 with steel cable inserted through openings 52.
  • FIG. The design of the end caps 62 as a tubular section has the advantage that when the transport anchor 20 is poured into the component to be transported, liquid concrete can penetrate from the outside through the open free end of the end cap 62, which improves the subsequent stability and tensile strength of the overall construction.
  • the pressure element 28 can have a groove on each of its two free end faces, in which the armature legs come to rest.
  • FIG 4 shows the transport anchor figure 2 in transport condition. It can be seen that the use of a steel cable advantageously offers the possibility consists of rolling it up and provisionally fixing it with the aid of fasteners 60 for transport or for packaging. Shown are retaining clips that can be pressed onto the steel cable. Alternatively, fastening means 60 can also be made from a different material, for example from wire or steel.
  • the armature limbs 26 can, on the one hand, be conical or tapered at their free ends, but cross-sectional reinforcements 36 can also be provided at the free ends (see FIG figure 5 ).
  • the cross-sectional reinforcements 36 can be made of the same material as the base body 22, but they can also be made of other materials. Shown is the use of a base body 22 made of a steel cable; of course, the cross-sectional reinforcements 36 can also be combined with a base body made of steel or steel wire.
  • FIG 6 shows a fixing element 48, which runs essentially parallel to the pressure element 28 and holds the two anchor legs 26 in their position or towards one another under pretension.
  • Fixing elements 48 are particularly useful when using a base body 22 made of steel or steel wire. By connecting, preferably welding, the fixing element 48 to the two anchor legs 26, the overall length of the anchor legs 16 can be additionally reduced.
  • the end caps 62 are particularly advantageously formed from a plastic.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Piles And Underground Anchors (AREA)
  • Bridges Or Land Bridges (AREA)
  • Dowels (AREA)

Description

Die vorliegende Erfindung betrifft einen Transportanker für Doppel- und Sandwichwände, umfassend

  • einen bĂĽgelförmigen Grundkörper mit
    • einem bogenförmigen Zentralabschnitt zum Einhängen von Anschlagmitteln,
    • zwei vom Zentralabschnitt ausgehenden, sich im Wesentlichen parallel zueinander erstreckenden Ankerschenkeln,
  • ein zwischen den Ankerschenkeln angeordnetes Druckelement.
The present invention relates to a lifting anchor for double and sandwich walls, comprising
  • a bow-shaped body with
    • an arcuate central section for hanging slings,
    • two anchor legs extending essentially parallel to one another, starting from the central section,
  • a pressure element arranged between the armature legs.

Weiterhin betrifft die Erfindung ein Verfahren zur Herstellung eines solchen Transportankers.Furthermore, the invention relates to a method for producing such a transport anchor.

Derartige Transport- und Verlegeanker werden für den Transport von sogenannten Doppel- und Sandwichwänden verwendet. Sie werden üblicherweise in der Beton-Fertigteil-Industrie in Betonwände eingegossen und dienen einerseits als Transportvorrichtung, an die Anschlagmittel eingehängt werden können, zum Anderen aber auch als Abstandhalter während des Betoniervorgangs. Sandwich- bzw. Sandwichbetonwände weisen eine Isolation zwischen den Wänden aus Beton auf. Im Folgenden wird zur Vereinfachung der Begriffe Doppelwand als Synonym für Doppelwände und Sandwichwände verwendet.Such transport and laying anchors are used for the transport of so-called double and sandwich walls. They are usually cast into concrete walls in the precast concrete industry and are used on the one hand as a transport device to which lifting gear can be hung, but on the other hand as spacers during the concreting process. Sandwich or sandwich concrete walls have insulation between the concrete walls. In the following, for the sake of simplicity, the terms double wall are used as synonyms for double walls and sandwich walls.

Während des Transportvorgangs wirken große Kräfte auf den Transportanker. Um zu vermeiden, dass sich die Ankerschenkel aufeinander zubewegen und sich im schlimmsten Fall aus den Wänden herauslösen, ist zwischen diesen das Druckelement zur Aufnahme von Kräften angeordnet.During the transport process, large forces act on the transport anchor. In order to prevent the armature legs from moving towards one another and, in the worst case, from being detached from the walls, the pressure element for absorbing forces is arranged between them.

Beispielsweise ist aus der Druckschrift DE 100 38 249 B4 ein Transportanker bekannt, bei dem das Druckelement aus Stahl gebildet und auf die Ankerschenkel aufgeschweißt ist. Die genannten großen Kräfte wirken beim Transport der Doppelwände auf diesen geschwächten Bereich, wodurch die Gefahr des Reißens der Schweißnähte, und somit der anschließenden übermäßigen Verformung des Transportankers sehr hoch ist. Ein ähnliches Druckelement aus Stahl geht aus der Druckschrift EP 3 029 220 A1 hervor. Bei diesem wird das Druckelement vorzugsweise durch Punktschweißen eingesetzt. Durch den Schweißvorgang wird auch das umliegende Material lokal verändert und geschwächt, was ebenfalls die Stabilität reduziert. In beiden Fällen können die Schweißverbindungen zum Herausbrechen des Transportankers aus dem Beton führen, was wiederum den Absturz des Betonfertigteils zur Folge haben kann.For example, from the reference DE 100 38 249 B4 a transport anchor is known in which the pressure element is made of steel and welded onto the anchor legs. The large forces mentioned act on this weakened area when the double walls are being transported, as a result of which there is a very high risk of the weld seams tearing and the subsequent excessive deformation of the transport anchor. A similar pressure element made of steel is known from the publication EP 3 029 220 A1 out. In this case, the pressure element is preferred used by spot welding. The welding process also changes and weakens the surrounding material locally, which also reduces stability. In both cases, the welded joints can cause the transport anchor to break out of the concrete, which in turn can cause the precast concrete element to fall.

Die DE 20 2014 103 774 U1 beschreibt einen Transportanker, bei dem Druckelement aus Stahl verschiebbar am Grundkörper gehalten ist. Grundsätzlich soll das Druckelement zwar aufgrund der Durchmesser von Durchgangsöffnungen an seiner Position verbleiben, wenn nicht größere Kräfte von außen wirken: Dies kann aber sicherlich nicht garantiert sein. Insofern kann sich das Druckelement beim Einbau auch verschieben, was zu entsprechenden Nachteilen führt. Aus diesem Grund sind Transportanker bekannt, die anstelle eines Druckelements aus Stahl ein nachgiebiges Material, beispielsweise Holz verwenden. Holz ist in der Lage, die auftretenden Kräfte aufzunehmen, nachteilig ist allerdings, dass Holz Flüssigkeit absorbieren kann, die zum Einen zum Verrotten des Druckelementes führt, zum Anderen aber auch gefrieren und sich ausdehnen kann. Beides ist nachteilig, da sich dann auch im Nachhinein noch Schäden in der Doppelwand bzw. dem Betonfertigteil einstellen können.The DE 20 2014 103 774 U1 describes a transport anchor in which the pressure element made of steel is slidably held on the base body. In principle, the pressure element should remain in its position due to the diameter of through-openings unless larger forces are acting from the outside: However, this certainly cannot be guaranteed. In this respect, the pressure element can also move during installation, which leads to corresponding disadvantages. For this reason, lifting anchors are known that use a flexible material, such as wood, instead of a pressure element made of steel. Wood is able to absorb the forces that occur, but the disadvantage is that wood can absorb liquid, which on the one hand causes the pressure element to rot, but on the other hand can also freeze and expand. Both are disadvantageous, since damage to the double wall or the precast concrete part can also occur afterwards.

Die DE 10 2005 009708 A1 beschreibt zum Beispiel eine Variante, bei dem das Druckelement aus Textilbeton gefertigt sein kann. Wesentlich ist aber auch bei dieser Variante, dass das Druckelement auf Querdruck nachgiebig sein soll. Insofern ist auch bei dieser Variante ein Loslösen von der Doppelwand möglich.The DE 10 2005 009708 A1 describes, for example, a variant in which the pressure element can be made of textile-reinforced concrete. However, it is also essential in this variant that the pressure element should be flexible in response to transverse pressure. In this respect, detachment from the double wall is also possible with this variant.

Die FR2948139 offenbart einen Transportanker gemäß dem Oberbegriff der Ansprüche 1 oder 2.The FR2948139 discloses a transport anchor according to the preamble of claims 1 or 2.

Die Herstellung aller im Stand der Technik beschriebenen Transportanker ist verhältnismäßig aufwändig und kostenintensiv. Problematisch sind auch entstehende Kältebrücken, Verwitterung bzw. Rosten und das verhältnismäßig hohe Eigengewicht.The production of all lifting anchors described in the prior art is relatively complex and cost-intensive. Cold bridges, weathering or rusting and the relatively high dead weight are also problematic.

Die Aufgabe der Erfindung besteht darin, einen Transportanker zu schaffen, der die oben genannten Nachteile nicht aufweist. Der Transportanker soll trotzdem kostengünstig herstellbar sein und eine sichere Verwendung ermöglichen. Weiterhin soll der Transportanker auch bei einem späteren Verbleib in der Doppelwand nicht zu Schäden oder Nachteilen führen. Die Aufgabe besteht weiterhin darin, ein Verfahren zur Herstellung eines solchen Transportankers vorzuschlagen.The object of the invention is to create a transport anchor that does not have the disadvantages mentioned above. The lifting anchor should nevertheless be able to be produced inexpensively and enable safe use. Furthermore, the transport anchor should not lead to damage or disadvantages even if it remains in the double wall later. The task remains is to propose a method for the production of such a transport anchor.

Die erfindungsgemäße Aufgabe wird durch einen Transportanker gemäß Anspruch 1 gelöst, wobei unter anderem das Druckelement aus einem Faserkunststoffverbundmaterial gebildet ist und an seinen beiden Enden Endkappen aufweist, die jeweils mit einer offenen Seite auf ein freies Ende des zylindrischen Druckelements aufgesetzt sind und jeweils Öffnungen aufweisen, durch die sich jeweils ein Ankerschenkel erstreckt.The object of the invention is achieved by a transport anchor according to claim 1, wherein, among other things, the pressure element is formed from a fiber-reinforced plastics material and has end caps at its two ends, which are each placed with an open side on a free end of the cylindrical pressure element and each have openings, through each of which an anchor leg extends.

Die Verwendung eines Faserkunststoffverbundmaterials ist aus dem Stand der Technik nicht bekannt. Die Verwendung eines solchen Materials für Transportanker gilt insbesondere hinsichtlich der aufzunehmenden Kräfte als nachteilig. Versuche haben aber gezeigt, dass die zu erwartenden Nachteile in Verbund mit Betonwänden, insbesondere mit Sandwichbetonwänden offensichtlich eliminiert werden. Die erfindungsgemäßen Transportanker sind durchaus in der Lage, alle notwendigen Kräfte sicher aufzunehmen.The use of a fiber plastic composite material is not known from the prior art. The use of such a material for lifting anchors is considered to be disadvantageous, particularly with regard to the forces to be absorbed. Tests have shown, however, that the disadvantages to be expected in connection with concrete walls, in particular with sandwich concrete walls, are obviously eliminated. The transport anchors according to the invention are perfectly capable of safely absorbing all the necessary forces.

Das erfindungsgemäße Druckelement aus Faserkunststoffverbundmaterial ist außerdem vorteilhafterweise wasserdicht, ein Übergang von Feuchtigkeit über das Druckelement von einer Doppelwand zur anderen wird somit verhindert. Insbesondere bei Druckelementen aus Holz und bei rohrförmigen, innen hohlen Druckelementen aus Stahl ist dies nicht der Fall.The pressure element made of fiber-reinforced plastic composite material according to the invention is also advantageously watertight, thus preventing the transfer of moisture via the pressure element from one double wall to the other. This is not the case, in particular, with pressure elements made of wood and with tubular, internally hollow pressure elements made of steel.

Nach einem weiteren, unabhängigen Aspekt der Lehre wird die Aufgabe auch durch einen Transportanker gemäß Anspruch 2 gelöst, wobei unter anderem das Druckelement aus Stahl gebildet ist und an seinen beiden Enden Endkappen aufweist, die jeweils mit einer offenen Seite auf ein freies Ende des zylindrischen Druckelements aufgesetzt sind und jeweils Öffnungen aufweisen, durch die sich jeweils ein Ankerschenkel erstreckt. Das nach diesem Aspekt der Lehre aus Stahl anstatt Faserkunststoffverbundmaterial gebildete Druckelement weist im Hinblick auf den gesamten Transportanker dieselben Vorteile bezüglich der Verbindung des Druckelements mit den Ankerschenkeln auf, da die Anbindung des in dieser Ausführungsform aus Stahl anstatt Faserkunststoffverbundmaterial gebildeten Druckelementes an die Ankerschenkel mit der zuvor beschriebenen Ausführungsform identisch ausgebildete Endkappen erfolgen kann. Demnach sind auch die nachfolgenden Vorteile eines Transportankers mit einem aus Faserkunststoffverbundmaterial gebildeten Druckelement auf diese Ausführungsform eines Transportankers mit einem aus Stahl gebildeten Druckelement übertragbar, insofern die Vorteile nicht explizit auf den Werkstoff Faserkunststoffverbundmaterial zurückzuführen sind.According to a further, independent aspect of the teaching, the object is also achieved by a lifting anchor according to claim 2, with the pressure element being made of steel and having end caps at both of its ends, each with an open side on a free end of the cylindrical pressure element are placed and each have openings through which an anchor leg extends. The pressure element formed according to this aspect of the teaching from steel instead of fiber-reinforced plastic material has the same advantages with regard to the entire lifting anchor with regard to the connection of the pressure element to the anchor legs, since the connection of the pressure element formed in this embodiment from steel instead of fiber-reinforced plastic material to the anchor legs with the previously described embodiment can be done identically designed end caps. Accordingly, the following advantages of a transport anchor with a pressure element made of fiber-reinforced plastic are also due to this Embodiment of a lifting anchor with a pressure element made of steel transferrable, insofar as the advantages are not explicitly due to the material fiber-reinforced plastic.

Grundsätzlich kann das Druckelement jeden beliebigen Querschnitt aufweisen, es bieten sich insbesondere runde, ovale, recht- oder dreieckige Querschnitte an. Das Druckelement kann an seinen freien Stirnflächen je Ankerschenkel eine Nut aufweisen, in der der durch die Endkappen gehaltene Achsschenkel anliegt. Hierdurch wird die Stabilität weiter erhöht.In principle, the pressure element can have any desired cross section; round, oval, rectangular or triangular cross sections are particularly suitable. The pressure element can have a groove on its free end faces for each anchor leg, in which the axle leg held by the end caps rests. This further increases the stability.

Ein wesentlicher Vorteil von Faserkunststoffverbundmaterial besteht weiterhin darin, dass keine Kältebrücken entstehen können. Es weist eine verhältnismäßig geringe Masse auf, rostet nicht und ist im Gegensatz zu Beton sehr robust, Abplatzungen Abbruch von Material ist nahezu ausgeschlossen. Die mechanischen und thermischen Eigenschaften von Faserkunststoffverbundmaterial können über eine Vielzahl von Parametern eingestellt werden. Neben der Faser-Matrix-Kombination können beispielsweise der Faserwinkel, der Faservolumenanteil, die Schichtreihenfolge und vieles mehr variiert werden. Beispielsweise können organische, anorganische oder auch natürliche Fasern eingesetzt werden. Auch die Länge der eingesetzten Fasern kann variiert werden.A major advantage of fiber-reinforced plastic is that no thermal bridges can form. It has a relatively low mass, does not rust and, in contrast to concrete, is very robust. The mechanical and thermal properties of fiber-reinforced plastics can be adjusted using a large number of parameters. In addition to the fiber-matrix combination, the fiber angle, the fiber volume fraction, the layer sequence and much more can be varied. For example, organic, inorganic or also natural fibers can be used. The length of the fibers used can also be varied.

Die Herstellung des erfindungsgemäßen Transportankers ist insbesondere durch die Verwendung der vorteilhaften Endkappen besonders einfach und schnell durchführbar. Die Endkappen sind erfindungsgemäß als Rohrabschnitte ausgeführt, die zwei einander gegenüberliegende Öffnungen aufweisen. Alternativ können die Endkappen auch becherförmig ausgeführt sein, sie weisen dann eine Bodenfläche und eine sich daran anschließende Umfangsfläche an auf. Der Bodenfläche gegenüber angeordnet ist die Becheröffnung. In den Endkappen bzw. in der der Umfangsfläche der Endkappen sind zwei einander gegenüberliegende Öffnungen vorgesehen, durch die sich im zusammengesetzten Endzustand jeweils ein Ankerschenkel erstreckt. Die Endkappen sind vorzugsweise aus einem widerstandsfähigen Kunststoff gefertigt.The production of the transport anchor according to the invention can be carried out particularly easily and quickly, in particular by using the advantageous end caps. According to the invention, the end caps are designed as pipe sections which have two opposite openings. Alternatively, the end caps can also be cup-shaped, in which case they have a bottom surface and an adjoining peripheral surface. The cup opening is arranged opposite the bottom surface. Two opposing openings are provided in the end caps or in the peripheral surface of the end caps, through which an anchor leg extends in the assembled final state. The end caps are preferably made of a durable plastic.

Beim Zusammensetzen des Transportankers werden die Endkappen über eine ihrer Öffnungen auf das Druckelement aus Faserkunststoffverbundmaterial endseitig aufgesetzt. Die Ankerschenkel werden jeweils durch die Öffnungen der Endkappen hindurchgeführt und das Druckelement wird an die gewünschte Position geschoben. Die Innendurchmesser der Endkappen sind dabei etwas geringer ausgeführt als die endseitigen Außendurchmesser des Druckelements. Befinden sich die zusammen zu setzenden Elemente jeweils an der richtigen Position, werden diese mechanisch zusammengepresst, die Endkappen werden also auf die freien Enden des Druckelements aufgeschoben. Die Elastizität der Endkappen reicht aus, damit sich diese ausreichend aufweiten. Die Ankerschenkel sind somit ebenfalls fest in den Endkappen gehalten. Die üblicherweise durch Verschweißen von Druckelementen mit den Ankerschenkeln hervorgerufene lokale Veränderung im Schweißbereich und das Brechen von Schweißnähten ist ausgeschlossen.When assembling the transport anchor, the end caps are placed on the end of the pressure element made of fiber-reinforced plastic via one of their openings. The anchor legs are each through the openings of End caps are fed through and the pressure element is pushed to the desired position. The inside diameters of the end caps are designed to be somewhat smaller than the outside diameters of the pressure element at the ends. If the elements to be assembled are in the correct position, they are mechanically pressed together, so the end caps are pushed onto the free ends of the pressure element. The elasticity of the end caps is sufficient for them to expand sufficiently. The anchor legs are thus also held firmly in the end caps. The local changes in the welding area usually caused by welding pressure elements to the anchor legs and the breaking of weld seams are excluded.

Alternativ ist es möglich, zunächst die Endkappen zu verpressen und die Ankerschenkel erst danach durch die Öffnungen einzuführen. Dies setzt voraus, dass die Öffnungen beim Verpressvorgang freibleiben.Alternatively, it is possible to press the end caps first and only then insert the anchor legs through the openings. This assumes that the openings remain free during the pressing process.

Das Druckelement kann in dem Bereich des Transportankers angeordnet sein, in dem die Ankerschenkel im Wesentlichen parallel zueinander verlaufen. Vorzugsweise kann das Druckelement aber auch in einem Übergangsbereich zwischen dem bogenförmigen Zentralabschnitt und den sich parallel zueinander erstreckenden Ankerschenkeln angeordnet sein. Letztendlich ist auch eine Anordnung innerhalb des bogenförmigen Zentralabschnitts denkbar.The pressure element can be arranged in the area of the transport anchor in which the anchor legs run essentially parallel to one another. However, the pressure element can preferably also be arranged in a transition area between the arcuate central section and the anchor legs extending parallel to one another. Finally, an arrangement within the arcuate central section is also conceivable.

Der Zentralabschnitt kann durch zwei gerade, aufeinander zu laufende Schenkelabschnitte gebildet sein, die über einen relativ kurzen Bogen miteinander verbunden sind. Somit weist der Zentralabschnitt insgesamt in etwa eine dreieckige Form auf. Alternativ kann der bogenförmige Grundkörper ausgehend vom Übergangsbereich auch über seine gesamte Länge gekrümmt verlaufen.The central section can be formed by two straight leg sections running towards one another, which are connected to one another via a relatively short arc. Thus, the central portion has an approximately triangular shape overall. Alternatively, the arched base body can also run curved over its entire length, starting from the transition area.

Die Ankerschenkel können über ihre gesamte Länge gerade ausgeführt sein, alternativ können sie aber auch freie Endbereiche aufweisen, die sich aus der ansonsten geraden Erstreckung der Ankerschenkel heraus geformt sind. Die Umformung kann dabei in sämtliche Richtungen erfolgen, beispielsweise aufeinander zu, voneinander weg, oder parallel zueinander, oder in unterschiedliche Richtungen.The anchor legs can be straight over their entire length, but alternatively they can also have free end regions which are formed out of the otherwise straight extension of the anchor legs. The reshaping can take place in all directions, for example towards one another, away from one another, or parallel to one another, or in different directions.

Der Grundkörper ist üblicherweise aus festem Stahl bzw. einer einzigen Stahllitze gebildet. In einer besonders vorteilhaften Ausführungsvariante kann dieser aber auch aus einem Draht- oder Drahtseil bestehen. Es bietet sich vorzugsweise ein rostfreies Stahlseil oder -kabel, beispielsweise ein galvanisiertes Stahlkabel an, denkbar ist aber auch die Verwendung eines ausreichend zugfesten Seiles, beispielsweise aus Kevlar oder Karbon. Die Verwendung eines Kabels oder Seils macht die Fertigung aufgrund der Flexibilität einfacher und schneller. Da ein Draht- oder Stahlseil aus einer Vielzahl von Litzen oder Drähten besteht, ist die Verwendung des erfindungsgemäßen Transportankers sicherer. Üblicherweise reißen nicht alle Litzen gleichzeitig, sondern einzeln, so dass oftmals noch Zeit verbleibt, die Doppelwände abzusetzen, bevor das Seil vollständig reißt.The base body is usually formed from solid steel or a single strand of steel. In a particularly advantageous embodiment variant, however, this can also consist of a wire or wire cable. A stainless steel rope or cable is preferable, for example a galvanized steel cable, but it is also conceivable to use a rope with sufficient tensile strength, for example made of Kevlar or carbon. Using a cable or rope makes manufacturing easier and faster due to the flexibility. Since a wire or steel cable consists of a large number of strands or wires, the use of the transport anchor according to the invention is safer. Usually not all the strands tear at the same time, but rather individually, so that there is often still time to detach the double walls before the rope tears completely.

Weiterhin hat sich gezeigt, dass bei der Verwendung von Drahtseilen als Grundkörper dieses im aufgewickelten Zustand ausgeliefert werden kann. Die sich in etwa parallel erstreckenden freien Abschnitte der Achsschenkel der gefertigten Transportanker können aufgerollt und mithilfe von Befestigungsmitteln in aufgerollter Position fixiert werden. Dadurch wird die Gesamtlänge der Transportanker reduziert, wodurch geringere Packmaße erreichbar sind. Hierdurch werden die Transportkosten und der Transportaufwand deutlich reduziert. Die Verwendung von Halteklipsen aus Kunststoff zur Fixierung der aufgerollten Achsschenkel haben sich als besonders geeignet erwiesen. Alternativ können die Halteklipse aber auch aus anderem Material gefertigt sein, beispielsweise aus Draht bzw. Stahl. Letztendlich müssen sie in der Lage sein, die aufgerollten Achsschenkel gegen Abwickeln zu sichern.Furthermore, it has been shown that when wire ropes are used as the base body, this can be delivered in the coiled state. The approximately parallel free sections of the axle stubs of the manufactured transport anchors can be rolled up and fixed in the rolled up position with the aid of fastening means. This reduces the overall length of the transport anchor, which means that smaller pack sizes can be achieved. As a result, the transport costs and the transport effort are significantly reduced. The use of plastic retaining clips to fix the rolled-up steering knuckles has proven to be particularly suitable. Alternatively, the retaining clips can also be made from a different material, for example from wire or steel. Ultimately, they must be able to secure the rolled up knuckles against unwinding.

Vorzugsweise können die Öffnungen zum Durchstecken des Grundkörpers bzw. der Ankerschenkel schräg verlaufen bzw. versetzt zueinander angeordnet sein, sodass die Ankerschenkel unter einem Winkel durch das Druckelement hindurchgeführt sind und nicht parallel zueinander verlaufen. In Richtung ihrer freien Enden nimmt der Abstand der beiden Ankerschenkel zueinander zu. Dies ist insbesondere dann von Vorteil, wenn der Grundkörper durch ein flexibles Stahlseil gebildet ist. In diesem Fall verformt sich der bogenförmige Zentralabschnitt oberhalb des Druckelements beim Anheben des zu transportierenden Bauteils. Der bogenförmige Zentralabschnitt wird gestreckt. Unter Last verlaufen die Ankerschenkel somit aufgrund der schräg verlaufenden Öffnungen gerade durch das Druckelement.The openings for inserting the base body or the armature legs can preferably run obliquely or be offset from one another, so that the armature legs are passed through the pressure element at an angle and do not run parallel to one another. In the direction of their free ends, the distance between the two anchor legs increases. This is particularly advantageous when the base body is formed by a flexible steel cable. In this case, the arched central section deforms above the pressure element when the component to be transported is lifted. The arcuate central portion is stretched. Under load, the armature legs thus run straight through the pressure element due to the oblique openings.

Weiterhin kann erfindungsgemäß vorgesehen sein, dass das Druckelement entweder ortsfest, also unverrückbar mit dem Grundkörper verbunden ist, es kann aber auch vorgesehen sein, dass sich dieses entlang der Ankerschenkel verschiebbar ist. Die unterschiedliche Verbindung kann durch das erfindungsgemäße Herstellungsverfahren durch Auswahl des Drucks bestimmt werden, über den die Endkappen in axialer Richtung auf das Druckelement aufgepresst werden, mit dem sie also die Achsschenkel einklemmen.Furthermore, it can be provided according to the invention that the pressure element is either stationary, ie immovably connected to the base body, but it can also be provided that this is displaceable along the anchor legs. The different connection can be determined by the production method according to the invention by selecting the pressure via which the end caps are pressed onto the pressure element in the axial direction, with which they therefore clamp the steering knuckle.

Der Grundkörper eines erfindungsgemäßen Transportankers kann vorzugsweise dadurch verkürzt werden, dass die freien Enden Querschnittsverstärkungen aufweisen, beispielsweise in Form von Rohrabschnitten oder zylindrischen Körpern. Dadurch wird die Verbindung des Grundkörpers bzw. der Ankerschenkel mit der jeweiligen Doppelwand verbessert. Die Querschnittsverstärkungen können auch aus einem anderen Material gefertigt sein.The base body of a transport anchor according to the invention can preferably be shortened in that the free ends have cross-sectional reinforcements, for example in the form of tube sections or cylindrical bodies. This improves the connection of the base body or the anchor legs with the respective double wall. The cross-sectional reinforcements can also be made of a different material.

Um zu verhindern, dass die Ankerschenkel während des Einbaus in die Doppelwand aufschwimmen, kann vorteilhaftweise zusätzlich ein fest verbundenes oder demontierbares Fixierungselement vorgesehen sein, welches in etwa parallel zum Druckelement zwischen den Achsschenkeln verläuft. Dieses kann ebenfalls aus Stahl, aber auch aus Kunststoff oder einem anderen geeigneten Material bestehen.In order to prevent the anchor legs from floating during installation in the double wall, a fixed or detachable fixing element can advantageously also be provided, which runs approximately parallel to the pressure element between the axle legs. This can also be made of steel, but also made of plastic or another suitable material.

Alternativ kann es aber auch vorteilhaft sein, wenn sich die freien Enden der Ankerschenkel verjüngen. Dies erleichtert das Einführen der Anker in die Doppelwände, insbesondere wenn diese eine Stahlbewährung aufweisen.Alternatively, however, it can also be advantageous if the free ends of the anchor legs are tapered. This makes it easier to insert the anchors into the double walls, especially if they have steel reinforcement.

Die Erfindung wird anhand der nachfolgenden Figuren näher erläutert. Diese zeigen verschiedene Ausführungsformen eines erfindungsgemäßen Transportankers, wobei weitere Formen denkbar sind. Es zeigen:

Fig. 1:
eine erste Ausführungsvariante eines erfindungsgemäßen Transportankers mit einem Grundkörper aus Stahl, in perspektivischer Darstellung,
Fig. 2:
eine zweite Ausführungsvariante eines erfindungsgemäßen Transportankers mit einem Grundkörper aus einem Stahlseil, in zwei perspektivischen Darstellungen,
Fig. 3:
eine vergrößerte Ansicht einer Endkappe mit eingeführtem Stahlseil,
Fig. 4:
den Transportanker aus Figur 2 in Transportzustand. 3 in Draufsicht,
Fig. 5
einen erfindungsgemäßen Transportanker mit Querschnittsverstärkungen,
Fig. 6:
einen erfindungsgemäßen Transportanker mit Fixierungselement in perspektivischer Darstellung,
The invention is explained in more detail with reference to the following figures. These show various embodiments of a transport anchor according to the invention, with other shapes being conceivable. Show it:
Figure 1:
a first embodiment of a transport anchor according to the invention with a base body made of steel, in a perspective view,
Figure 2:
a second embodiment of a transport anchor according to the invention with a base body made of a steel cable, in two perspective views,
Figure 3:
an enlarged view of an end cap with inserted steel cable,
Figure 4:
the transport anchor figure 2 in transport condition. 3 in top view,
figure 5
a transport anchor according to the invention with cross-sectional reinforcements,
Figure 6:
a transport anchor according to the invention with a fixing element in a perspective view,

Die Figuren 1 bis 6 zeigen verschiedene Varianten eines Transportankers 20. Die dargestellten Figuren bzw. Ausführungsformen dienen der Erläuterung, einzelne Merkmale der einzelnen Ausführungsbeispiele sind mit Merkmalen anderer Ausführungsbeispiele beliebig kombinierbar.The Figures 1 to 6 show different variants of a transport anchor 20. The figures and embodiments shown serve for explanation, individual features of the individual embodiments can be combined with features of other embodiments.

Der Transportanker 20 weist einen Grundkörper 22 mit einem bogenförmigen Zentralabschnitt 24 und sich daran anschließenden, parallel zueinander verlaufende Ankerschenkeln 26 auf. Weiterhin ist ein zwischen den Ankerschenkeln 26 angeordnetes Druckelement 28 gezeigt.The transport anchor 20 has a base body 22 with an arcuate central section 24 and adjoining anchor legs 26 running parallel to one another. Furthermore, a pressure element 28 arranged between the armature legs 26 is shown.

Erfindungsgemäß besteht der Grundkörper vorzugsweise aus Stahl, einem Stahlseil oder einem Seil aus einem anderen widerstandsfähigen, geeigneten Material. Das Druckelement 28 ist aus einem Faserkunststoffverbundmaterial gebildet.According to the invention, the base body is preferably made of steel, a steel cable or a cable made of another resistant, suitable material. The pressure element 28 is formed from a fiber plastic composite material.

Das Druckelement 28 kann erfindungsgemäß an verschiedenen Stellen im Verlauf des Grundkörpers angeordnet sein. Die Figuren 1 und 2 zeigen beispielhaft eine Positionierungsmöglichkeit, nämlich angrenzend an einen Übergangsbereich zwischen den Ankerschenkeln 26 und dem bogenförmigen Zentralabschnitt 24. Alternativ kann das Druckelement 28 im Übergangsbereich, mit größerem Abstand zum Übergangsbereich 30 oder auch innerhalb des bogenförmigen Zentralabschnitts 24 angeordnet sein.According to the invention, the pressure element 28 can be arranged at various points along the course of the base body. The figures 1 and 2 show an example of a possible positioning, namely adjacent to a transition area between the armature legs 26 and the arched central section 24. Alternatively, the pressure element 28 can be arranged in the transition area, at a greater distance from the transition area 30 or also within the arched central section 24.

Der bogenförmigen Zentralabschnitt 24 kann eine im Wesentlichen dreieckige Form aufweisen, gebildet durch zwei gerade verlaufende Schenkelabschnitte 32, die in einen relativ engen Bogen 34 übergehen. Dies ist beispielsweise bei einem Grundkörper 22 aus Stahl oder Stahldrahts der Fall (Figur 1). Alternativ dazu kann der bogenförmige Zentralabschnitt 24 auch insgesamt bogenförmig ausgeführt sein, insbesondere bei der Verwendung eines Stahlseils (Figur 2).The arcuate central portion 24 may have a generally triangular shape formed by two straight leg portions 32 merging into a relatively narrow arc 34 . This is the case, for example, with a base body 22 made of steel or steel wire ( figure 1 ). As an alternative to this, the arched central section 24 can also be designed arched overall, in particular when using a steel cable ( figure 2 ).

An freie Enden des Druckelements 28 schließen sich die Endkappen 62 mit Öffnungen 52 zum Durchstecken der Ankerschenkel 26 endseitig an. Die Endkappen 62 sind im gezeigten Ausführungsbeispiel im Wesentlichen rohrförmig ausgeführt und werden mit einer ihrer offenen Seiten auf die Enden des Druckelements 28 aufgesteckt. Dadurch, dass die Innendurchmesser der Endkappen 62 geringer sind, als die Außendurchmesser des Druckelements 28, müssen die Endkappen 62 auf das Druckelement 28 aufgedrückt bzw. gepresst werden. Sie weiten sich dadurch auf und sind aufgrund ihrer Elastizität nach der Montage fest und unverrückbar am Druckelement 28 gehalten.At the free ends of the pressure element 28, the end caps 62 close with openings 52 for inserting the armature leg 26 ends. In the exemplary embodiment shown, the end caps 62 are essentially tubular and are pushed onto the ends of the pressure element 28 with one of their open sides. Due to the fact that the inner diameter of the end caps 62 is smaller than the outer diameter of the pressure element 28, the end caps 62 must be pressed or pressed onto the pressure element 28. They widen as a result and are held firmly and immovably on the pressure element 28 after assembly due to their elasticity.

Die Öffnungen 52 durch die sich die Ankerschenkel 26 erstrecken, sind im gezeigten Ausführungsbeispiel einander genau gegenüberliegend angeordnet, sodass die Ankerschenkel 26 parallel zueinander und im Wesentlichen rechtwinklig zur Haupterstreckung des Druckelements 28 verlaufen. Alternativ können die Öffnungen 52 aber auch schräg bzw. versetzt zueinander angeordnet sein, sodass die Ankerschenkel 26 unter einem Winkel durch die Endkappen 62 hindurchgeführt sind und im weiteren Verlauf nicht parallel zueinander verlaufen.The openings 52 through which the armature legs 26 extend are arranged exactly opposite one another in the exemplary embodiment shown, so that the armature legs 26 run parallel to one another and essentially at right angles to the main extension of the pressure element 28 . Alternatively, the openings 52 can also be arranged at an angle or offset from one another, so that the armature legs 26 are guided through the end caps 62 at an angle and do not run parallel to one another in the further course.

Fig. 3 zeigt eine vergrößerte Ansicht einer Endkappe 62 mit durch die Öffnungen 52 eingeführtem Stahlseil. Die Ausbildung der Endkappen 62 als rohrförmiger Abschnitt hat den Vorteil, dass beim Vergießen des Transportankers 20 in das zu transportierende Bauteil flüssiger Beton von außen durch das geöffnete freie Ende der Endkappe 62 eindringen kann, was die spätere Stabilität und Zugfestigkeit der Gesamtkonstruktion verbessert. Das Druckelement 28 kann an seinen beiden freien Stirnflächen jeweils eine Nut aufweisen, in denen die Ankerschenkel zur Anlage kommen. 3 12 is an enlarged view of end cap 62 with steel cable inserted through openings 52. FIG. The design of the end caps 62 as a tubular section has the advantage that when the transport anchor 20 is poured into the component to be transported, liquid concrete can penetrate from the outside through the open free end of the end cap 62, which improves the subsequent stability and tensile strength of the overall construction. The pressure element 28 can have a groove on each of its two free end faces, in which the armature legs come to rest.

Fig 4 zeigt den Transportanker aus Figur 2 im Transportzustand. Erkennbar ist, dass durch die Verwendung eines Stahlseils vorteilhafterweise die Möglichkeit besteht, dieses aufzurollen und mit Hilfe von Befestigungsmittel 60 für den Transport bzw. für das Verpacken vorläufig zu fixieren. Gezeigt sind Halteklipse, die auf das Stahlseil aufgedrückt werden können. Alternativ können Befestigungsmittel 60 aber auch aus anderem Material gefertigt sein, beispielsweise aus Draht bzw. Stahl. figure 4 shows the transport anchor figure 2 in transport condition. It can be seen that the use of a steel cable advantageously offers the possibility consists of rolling it up and provisionally fixing it with the aid of fasteners 60 for transport or for packaging. Shown are retaining clips that can be pressed onto the steel cable. Alternatively, fastening means 60 can also be made from a different material, for example from wire or steel.

Die Ankerschenkel 26 können einerseits an ihren freien Enden konisch oder spitz zulaufend ausgeführt sein, an den freien Enden können aber auch Querschnittsverstärkungen 36 vorgesehen sein (siehe Fig. 5). Die QuerschnittsVerstärkungen 36 können aus dem gleichen Material bestehen wie der Grundkörper 22, sie können aber auch aus anderen Materialien gefertigt sein. Gezeigt ist Verwendung eines Grundkörpers 22 aus einem Stahlseil, selbstverständlich können die Querschnittsverstärkungen 36 auch mit einem Grundkörper aus Stahl oder Stahldraht kombiniert werden.The armature limbs 26 can, on the one hand, be conical or tapered at their free ends, but cross-sectional reinforcements 36 can also be provided at the free ends (see FIG figure 5 ). The cross-sectional reinforcements 36 can be made of the same material as the base body 22, but they can also be made of other materials. Shown is the use of a base body 22 made of a steel cable; of course, the cross-sectional reinforcements 36 can also be combined with a base body made of steel or steel wire.

Figur 6 zeigt ein Fixierungselement 48, das im Wesentlichen parallel zum Druckelement 28 verläuft und die beiden Ankerschenkel 26 in ihre Position oder diese unter Vorspannung aufeinander zuhält. Fixierungselemente 48 sind insbesondere bei der Verwendung eines Grundkörpers 22 aus Stahl oder Stahldraht sinnvoll. Durch Verbinden, vorzugsweise Verschweißen des Fixierungselements 48 mit dem beiden Ankerschenkeln 26 kann die Gesamtlänge der Ankerschenkel 16 zusätzlich reduziert werden. figure 6 shows a fixing element 48, which runs essentially parallel to the pressure element 28 and holds the two anchor legs 26 in their position or towards one another under pretension. Fixing elements 48 are particularly useful when using a base body 22 made of steel or steel wire. By connecting, preferably welding, the fixing element 48 to the two anchor legs 26, the overall length of the anchor legs 16 can be additionally reduced.

Die in den Figuren 1 bis 6 dargestellten Ausführungsvarianten mit dem Druckelement 28 aus einem Faserkunststoffverbundmaterial können alternativ auch derart abgeändert sein, dass das Druckelement 28 aus Stahl gebildet ist. Die dargestellten Vorteile sind auch auf eine solche Ausführungsvariante übertragbar.The in the Figures 1 to 6 Illustrated variants with the pressure element 28 made of a fiber plastic composite material can alternatively also be modified in such a way that the pressure element 28 is made of steel. The advantages shown can also be transferred to such an embodiment variant.

Besonders vorteilhaft sind die Endkappen 62 aus einem Kunststoff gebildet.The end caps 62 are particularly advantageously formed from a plastic.

Dadurch kann das Verpressen der Elemente Druckelement 28, Ankerschenkel 26 und Endkappen 62 miteinander auf besonders einfache Weise vorgenommen werden.As a result, the elements of pressure element 28, armature leg 26 and end caps 62 can be pressed together in a particularly simple manner.

Claims (15)

  1. A transportation anchor (20) for double and sandwich walls, comprising
    - a bow-shaped base body (22), with
    - an arch-shaped central section (24) for hooking-in lifting means,
    - two anchor legs (26) projecting from the central section (24), extending essentially parallel to one another,
    - a pressure element (28) arranged between the anchor legs (26),
    wherein
    - the pressure element (28) is made from a fibre plastic composite material,
    - the pressure element (28) comprises at its two ends cup-shaped or tubular section-shaped end caps (62), which are each placed with an open side on a free end of the cylindrical pressure element (28),
    characterised in that two openings (52) lying opposite one another are provided in the peripheral surface of the cup-shaped or tubular section-shaped end caps (62), through each of which openings an anchor leg (26) extends in the final assembled state.
  2. The transportation anchor (20) for double and sandwich walls, comprising
    - a bow-shaped base body (22), with
    - an arch-shaped central section (24) for hooking-in lifting means,
    - two anchor legs (26) projecting from the central section (24), extending essentially parallel to one another,
    - a pressure element (28) arranged between the anchor legs (26),
    wherein
    - the pressure element (28) comprises at its two ends cup-shaped or tubular section-shaped end caps (62), which are each placed with an open side on a free end of the cylindrical pressure element (28),
    characterised in that the pressure element (28) is made of steel, and that two openings (52) lying opposite one another are provided in the peripheral surface of the cup-shaped or tubular section-shaped end caps (62), through each of which openings an anchor leg (26) extends in the final assembled state.
  3. The transportation anchor (20) according to claim 1 or 2, characterised in that a maximum inner diameter (D2) of the end caps (62) is smaller than a maximum outer diameter (D1) of the free ends of the pressure element (28), as a result of which the end caps (62) are held on the pressure element (28) by friction.
  4. The transportation anchor (20) according to any one of claims 1 to 3, characterised in that the openings (52) are arranged diametrically opposite one another, so that the anchor legs (26) are passed through at right angles to the extension of the pressure element (28).
  5. The transportation anchor (20) according to any one of claims 1 to 3, characterised in that the openings (52) run obliquely to the straight extension of the pressure element (28), so that the anchor legs (26) pass through the pressure element (28) at an angle.
  6. The transportation anchor (20) according to any one of claims 1 to 5, characterised in that the bow-shaped base body (22) is made of steel rope.
  7. The transportation anchor (20) according to any one of claims 1 to 5, characterised in that the bow-shaped base body (22) is made of steel.
  8. The transportation anchor (20) according to any one of claims 1 to 7, characterised in that the pressure element (28) and the end caps (62) have a corresponding cross-sectional shape from the group round, oval, rectangular or triangular.
  9. The transportation anchor (20) according to any one of claims 1 to 8, characterised in that the pressure element (28) is arranged in the course of the anchor legs (26) extending parallel to one another.
  10. The transportation anchor (20) according to any one of claims 1 to 9, characterised in that the pressure element (28) at each of its free ends has a slot on the end side, in each of which an anchor leg (26) extends.
  11. The transportation anchor (20) according to any one of claims 1 to 10, characterised in that a thermally insulating separating body (38) is provided in the course of the pressure element (28), which divides the pressure element (28) into a first pressure element section (40) and a second pressure element section (42).
  12. The transportation anchor (20) according to any one of claims 1 to 11, characterised in that a fixing element (48) is provided, which runs essentially parallel to the pressure element (28) and fixes the anchor legs (26) in their position.
  13. The transportation anchor (20) according to any one of claims 1 to 12, characterised in that the anchor legs (26) comprise cross-sectional reinforcements (36) at their free ends.
  14. The transportation anchor (20) according to any one of claims 1 to 13, characterised in that the anchor legs (26) comprise an end section (50) at each of their free ends, which projects at an angle to the essentially straight extension of the anchor legs (26).
  15. A method for the production of a transportation anchor (20) with the features of claims 1 to 14, characterised by the process steps
    - production of a bow-shaped base body with an arch-shaped central section (24) and two anchor legs (26) projecting from the central section (24), extending essentially parallel to one another,
    - production of a longitudinal pressure element (28) made from a fibre plastic composite material or steel,
    - production of ends caps (62) with a corresponding cross section at the free ends of the pressure element (28), wherein the maximum inner diameter of the end caps is smaller than a maximum outer diameter of the free ends of the pressure element (28) and each of the end caps further comprises openings (52) for passing-through anchor legs (26),
    - arrangement of the end caps (62) on the pressure element (28),
    - passing the anchor legs (26) through the openings (52) and positioning of the pressure element (28) at the final position,
    - pressing of the elements pressure element (28), anchor legs (26) and end caps (62) with one another.
EP20702450.6A 2019-01-28 2020-01-28 Transport anchor having a pressure element and method of producing a transport anchor Active EP3918153B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019102065.4A DE102019102065A1 (en) 2019-01-28 2019-01-28 Transport anchor with fiber-plastic composite material pressure element
PCT/EP2020/052001 WO2020157041A1 (en) 2019-01-28 2020-01-28 Transport anchor having a fibre-plastic composite material pressure element

Publications (3)

Publication Number Publication Date
EP3918153A1 EP3918153A1 (en) 2021-12-08
EP3918153B1 true EP3918153B1 (en) 2023-06-07
EP3918153C0 EP3918153C0 (en) 2023-06-07

Family

ID=69374297

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20702450.6A Active EP3918153B1 (en) 2019-01-28 2020-01-28 Transport anchor having a pressure element and method of producing a transport anchor

Country Status (9)

Country Link
US (1) US11834854B2 (en)
EP (1) EP3918153B1 (en)
AU (1) AU2020213876B2 (en)
CA (1) CA3127523C (en)
DE (1) DE102019102065A1 (en)
ES (1) ES2953940T3 (en)
HU (1) HUE062377T2 (en)
PL (1) PL3918153T3 (en)
WO (1) WO2020157041A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020215445A1 (en) 2020-12-07 2022-06-09 eres-technik GmbH Lifting anchor for concrete parts and method for manufacturing a lifting anchor for concrete parts

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202014103774U1 (en) * 2014-08-14 2015-11-17 Philipp Gmbh Hollow wall anchor
EP3309327B1 (en) * 2016-10-11 2020-07-08 Econac bvba Transport anchor

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2691738A1 (en) * 1992-05-27 1993-12-03 Tavernier Jean Pierre Supporting lug for concrete structural component - is made from steel cable length bent into loop, equipped with end bushes and embedded in concrete
DE10038249B4 (en) 1999-08-12 2006-02-09 Syspro-Gruppe Betonbauteile E.V. Transport anchor for so-called double walls
DE102005009708B4 (en) 2005-03-03 2009-08-13 Pape, Heinz, Dr.-Ing Transport anchor for prefabricated reinforced concrete elements
FR2948139B1 (en) * 2009-07-15 2015-03-27 Fehr DEVICE FOR CONNECTING TWO SKINS OF A LOST FORMWORK WALL EQUIPPED WITH A HANDLING SLING.
DE202011000293U1 (en) * 2011-02-09 2011-04-21 Pape, Heinz, Dr.-Ing Transport anchor for prefabricated reinforced concrete elements
EP3029220B1 (en) 2014-12-02 2021-09-29 Ikona AG Transport anchor for prefabricated reinforced concrete double walls
DE102017102903A1 (en) * 2017-02-14 2018-09-06 Georg Weidner Rebar of flat steel
CH715485A2 (en) * 2018-10-18 2020-04-30 Bs Ingenieure Ag Lifting anchor.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202014103774U1 (en) * 2014-08-14 2015-11-17 Philipp Gmbh Hollow wall anchor
EP3309327B1 (en) * 2016-10-11 2020-07-08 Econac bvba Transport anchor

Also Published As

Publication number Publication date
EP3918153A1 (en) 2021-12-08
AU2020213876B2 (en) 2022-06-30
DE102019102065A1 (en) 2020-07-30
US11834854B2 (en) 2023-12-05
EP3918153C0 (en) 2023-06-07
WO2020157041A1 (en) 2020-08-06
AU2020213876A1 (en) 2021-08-19
CA3127523A1 (en) 2020-08-06
US20210355696A1 (en) 2021-11-18
CA3127523C (en) 2023-03-21
PL3918153T3 (en) 2023-10-09
ES2953940T3 (en) 2023-11-17
HUE062377T2 (en) 2023-10-28

Similar Documents

Publication Publication Date Title
DE60223857T2 (en) Connection for reinforcing bars and connection methods
EP3497325B1 (en) Tower segment, tower section, tower, wind turbine, and method for producing a tower segment and for connecting tower segments
DE202009018541U1 (en) ground anchor
EP3029220A1 (en) Transport anchor for prefabricated reinforced concrete double walls
EP3640410B1 (en) Transport anchor
EP3309327B1 (en) Transport anchor
EP2948695B1 (en) Wire rope assembly unit
EP3918153B1 (en) Transport anchor having a pressure element and method of producing a transport anchor
DE19853712B4 (en) Transport and installation anchor with cross braced longitudinal anchoring legs
DE10310715A1 (en) Invention relating to components as reinforcement elements and concrete parts made therefrom
EP2826930B1 (en) Device for manipulating multiple-wall flat components
DE20306280U1 (en) Concrete component connection device
DE102008000936A1 (en) Wheel suspension for vehicle i.e. motor vehicle, has two wheel suspension components e.g. axle carrier and control arm, and connection element connecting wheel suspension components in energy-absorbing and articulated manner
EP1932978B1 (en) Reinforcing element for absorbing forces in concreted slabs in the area of supporting elements
EP1544380B1 (en) Spacing tube for the insertion of tensioning rods
DE3834731C2 (en)
DE29706644U1 (en) Concrete anchors for reinforced concrete structures
DE102015009376B4 (en) Component of a motor vehicle and method for assembling a component
EP3851616B1 (en) Transport anchor with strap
DE102020114611B3 (en) Formwork arrangement
DE102020133632A1 (en) Support element for a precast reinforced concrete part
EP3556960B1 (en) Reinforcing assembly and method for producing a building material body using the reinforcing assembly
DE102010015116B4 (en) Riveted connection between a flat material or a component made of flat material and a connecting element
EP2841795B1 (en) Force transmission unit
DE19652736B4 (en) Component for thermal insulation

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20210803

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20220309

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
GRAJ Information related to disapproval of communication of intention to grant by the applicant or resumption of examination proceedings by the epo deleted

Free format text: ORIGINAL CODE: EPIDOSDIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTC Intention to grant announced (deleted)
INTG Intention to grant announced

Effective date: 20220726

GRAJ Information related to disapproval of communication of intention to grant by the applicant or resumption of examination proceedings by the epo deleted

Free format text: ORIGINAL CODE: EPIDOSDIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTC Intention to grant announced (deleted)
INTG Intention to grant announced

Effective date: 20230103

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: AT

Ref legal event code: REF

Ref document number: 1575515

Country of ref document: AT

Kind code of ref document: T

Effective date: 20230615

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502020003621

Country of ref document: DE

U01 Request for unitary effect filed

Effective date: 20230705

REG Reference to a national code

Ref country code: RO

Ref legal event code: EPE

U07 Unitary effect registered

Designated state(s): AT BE BG DE DK EE FI FR IT LT LU LV MT NL PT SE SI

Effective date: 20230714

REG Reference to a national code

Ref country code: NO

Ref legal event code: T2

Effective date: 20230607

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: GR

Ref legal event code: EP

Ref document number: 20230401245

Country of ref document: GR

Effective date: 20230908

REG Reference to a national code

Ref country code: HU

Ref legal event code: AG4A

Ref document number: E062377

Country of ref document: HU

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2953940

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20231117

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230607

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230607

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230607

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231007

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230607

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230607

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231007

U20 Renewal fee paid [unitary effect]

Year of fee payment: 5

Effective date: 20240119

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502020003621

Country of ref document: DE

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GR

Payment date: 20240118

Year of fee payment: 5

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IE

Payment date: 20240118

Year of fee payment: 5

Ref country code: ES

Payment date: 20240216

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: RO

Payment date: 20240118

Year of fee payment: 5

Ref country code: HU

Payment date: 20240125

Year of fee payment: 5

Ref country code: CZ

Payment date: 20240118

Year of fee payment: 5

Ref country code: GB

Payment date: 20240124

Year of fee payment: 5

26N No opposition filed

Effective date: 20240308

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20240124

Year of fee payment: 5

Ref country code: PL

Payment date: 20240113

Year of fee payment: 5

Ref country code: NO

Payment date: 20240122

Year of fee payment: 5