EP2169144A1 - Anchor for transporting pre-fabricated concrete pieces and method for manufacturing such an anchor - Google Patents

Anchor for transporting pre-fabricated concrete pieces and method for manufacturing such an anchor Download PDF

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Publication number
EP2169144A1
EP2169144A1 EP08016817A EP08016817A EP2169144A1 EP 2169144 A1 EP2169144 A1 EP 2169144A1 EP 08016817 A EP08016817 A EP 08016817A EP 08016817 A EP08016817 A EP 08016817A EP 2169144 A1 EP2169144 A1 EP 2169144A1
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EP
European Patent Office
Prior art keywords
legs
steel profile
foot
section
anchor
Prior art date
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Granted
Application number
EP08016817A
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German (de)
French (fr)
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EP2169144B1 (en
Inventor
Klaus Fröhlich
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Leviat GmbH
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Halfen GmbH and Co KG
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Priority to EP08016817A priority Critical patent/EP2169144B1/en
Priority to AT08016817T priority patent/ATE531873T1/en
Publication of EP2169144A1 publication Critical patent/EP2169144A1/en
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/14Conveying or assembling building elements
    • E04G21/142Means in or on the elements for connecting same to handling apparatus

Definitions

  • the invention relates to a transport anchor for precast concrete of the type specified in the preamble of claim 1 and a method for producing the transport anchor.
  • Transport anchors for precast concrete parts are introduced into the formwork before casting the concrete, wherein the provided for attaching a hoist portion of the lifting anchor is provided with a recess body, which is removed after curing of the concrete or when removing the formwork. In this way, the serving for attaching the hoist head or bow is located within the contour of the precast concrete part and is not about this.
  • Various types of transport anchors are known.
  • the DE 200 09 227 U1 describes a transport anchor, which consists essentially of a connector and anchor rods.
  • the fitting is a rectangular steel plate, on whose side facing the edge of the precast concrete side a tab is formed with an eyelet.
  • the fitting is attached to the Anchor rods welded, which are held between reinforcing mats.
  • a transport anchor for precast concrete elements which consists of mutually parallel anchor profiles, which are closed on the one hand to a transport hook. Between the parallel anchor profiles extend transverse webs which connect the anchor profiles and thus increase the rigidity of the transport anchor. For better anchorage of the transport anchor in concrete, the anchor profiles are angled or bent at the ends of the transport hook remote from the transport hook.
  • the present invention has for its object to provide a lifting anchor of the type mentioned in the preamble of claim 1, which is made in one piece and is suitable for transmitting large forces.
  • the object is to provide a method for producing such a transport anchor.
  • the receptacle for the hoist is a bow connecting the two legs, whose inner radius is adapted to the recording of the hoist.
  • the bow substantially corresponds to the usual Shape of the hoists, so that a defined force introduction of the lifting anchor is given in the hoist.
  • the steel profile is pressed in the section of the sheet, wherein the steel profile in the arc in the radial direction has a dimension which is less than the diameter of the steel profile and in the arc has a width which is greater than this diameter.
  • the steel profile in the section of the sheet has a cross-sectional shape in which the height of the material is smaller than the width, wherein the ratio of the thickness in the radial direction to the width is 1: 1.23.
  • the steel profile may for example be a round bar or a bar with semicircular, oval or rectangular cross-section.
  • the legs are parallel to each other, and the distance between the legs is ⁇ the diameter of the steel profile. In this way, the distance between the legs to each other is low enough to form a common foot on the legs. It is expedient that at least one extending between the legs intermediate portion is formed, over which the legs are connected to each other.
  • the foot comprises at least two laterally outwardly standing foot parts, the height of which decreases relative to the outer edge, with respect to a center plane of the support anchor.
  • Such a shape of the foot is chosen for manufacturing reasons and leads to a large area of the foot and thus to a good anchorage in the concrete.
  • a preferred development of the method for producing the transport anchor is that the steel profile is pressed in at least one section, whereby a cross section with a thickness and a width is formed, wherein the steel profile is bent in this section so that the thickness in the radial direction of Arch runs.
  • the material of the chain link is formed in the section with the second arc and the adjacent region of the legs by hot dipping to the foot.
  • in a first compression step on the legs of a common block is generated and then the material, based on a center plane of the transport anchor, laterally compressed to the outside and the foot is generated.
  • a separate foot is formed on each leg.
  • the Fig. 1 shows a lifting anchor 1, which consists of an elongated steel profile, namely a machined round steel 2.
  • the round steel 2 is U-shaped and comprises two legs 3, 4 and a sheet 5, wherein the round steel 2 in a section A1, in which the Sheet 5 is pressed, as will be explained later.
  • At the bow 5 remote ends of the legs 3, 4 a formed by hot diving of the round steel 2 foot 6 is provided, which ensures a secure hold of the transport anchor 1 in the concrete.
  • the sheet 5 is located in a recess of the concrete and is accessible for connection to a hoist.
  • the round steel 2 in the section A1 is deformed such that the sheet 5 is formed.
  • a chain link 7, ie, the free ends of the legs 3, 4 are provided with oppositely directed sheets 8, 9 and welded together at the end faces, so that a weld 10 for the strength of the chain link 7 provides.
  • the chain link 7 is pressed in a section A2, so that the same shape results as on the sheet fifth
  • the Fig. 3 shows a developed view of the sheet 5, from which it follows that in section A1, the steel profile or the round bar 2 before making the sheet 5 by pressing a smaller thickness d than the diameter D of the steel section or the round steel 2 in the section of Legs 3, 4. After pressing of the relevant section A1, the bending of the round steel 2 to produce the sheet 5 or in the same manner also of the sheets 8 and 9 takes place.
  • Fig. 4 the intermediate form of the lifting anchor is shown after a first crushing step.
  • the arc 5 and most of the length of the legs 3, 4 is unchanged Fig. 2 but the in Fig. 2 lower portion of the chain link 7 is formed by hot dipping into a block 11.
  • the sheet 5 has an inner radius R which is smaller than the diameter D of the round steel 2 on the legs 3, 4.
  • the distance S between the legs 3, 4 is ⁇ the diameter D.
  • the Fig. 5 shows a section along the line VV in Fig. 4 ,
  • the Fig. 6 shows the view of the transport anchor 1 after the Fertigstauchtreatment, in the direction of arrow VI in Fig. 4 , It can be seen that in the sheet 5 of the round steel 2 has a thickness d, which is smaller by the compression than the diameter D of the round bar 2 in the region of the legs 3, 4. By pressing but the width b of the sheet 5 is greater as the diameter D, so that the cross-sectional areas in the sheet 5 and the legs 3, 4 are equal in magnitude.
  • the foot 6 is formed by hot dipping so that two in cross-section trapezoidal foot parts 6 ', 6''are arranged symmetrically to a central axis M, wherein the height of the foot parts 6', 6 '' decreases towards the outer edge.
  • Fig. 7 is the section along the line VII-VII in Fig. 6 shown, from which the shape of the foot parts 6 ', 6''and thus also of the foot 6 can be seen in plan view.
  • the reference symbol M2 indicates a center plane of the transport anchor and it can be seen that the foot parts 6 ', 6 "are arranged symmetrically to this center plane M2. Between the legs 3, 4, an intermediate portion 6 * of the foot 6 is arranged, which merges into the laterally adjoining foot parts 6 ', 6''.
  • the Fig. 8 shows the transport anchor 1 in a view according to arrow VIII in Fig. 6 , wherein the reference numerals of the respective parts with those of FIGS. 6 and 7 to match.
  • FIG. 9 the upper region of the transport anchor 1 is shown with its bow 5, to which a coupling 12 can be attached, with a correspondingly shaped hook 13 can be moved under the sheet 5 in order to reach through this.
  • Such couplings 12 are known per se.
  • the Fig. 10 shows a chain link 14, which is also made of a round steel 2, as the chain link 7 in Fig. 2 , However, a 180 ° arc 16 is integrally formed on the leg 4 of the chain link 14, which is directed to an end face of the leg 3, so that a weld 15 is below the leg 3.
  • the chain link 14 is identical to the chain link 7 in FIG Fig. 2 ,
  • a further embodiment variant of a chain link 17 is shown, wherein the ends of the round steel 2 are brought together in the region of the leg 3 and there is a weld 18 is provided.
  • the chain link 17 has the upper arc 5 and lower arc 16, which are each formed from the compressed sections A1 and A2 of the round bar 2.
  • the Fig. 12 shows the intermediate form of the lifting anchor after a compression step, this representation of those in Fig. 4 corresponds and only due to the position of the weld 18 in the chain link 17, this is still visible after warm upsetting.
  • the block 11 is also the same after this first compression step.
  • the Fig. 13 shows the view of the transport anchor 1 after the Fertigstauchtreatment in the direction of arrow XIII in Fig. 12 , wherein the foot 6 is also shaped as to Fig. 6 described so that the reference numerals match.
  • a bent to a U-piece 19 round bar 2 is shown, wherein before bending provided for the sheet 5 section A1 is pressed, as already to the FIGS. 2, 3 and 6 has been described.
  • the U-piece 19 therefore includes the legs 3, 4 and the bow 5.
  • At the free ends of the legs 3, 4 then takes the hot diving, so that after a first compression step - as in Fig. 15 shown - a block 20 is formed, which is composed of the sub-blocks 20 ', 20''. This results from the free ends, which are connected by the hot diving to a block 20.
  • Fig. 16 is the section along the line XVI-XVI in Fig. 15 shown, wherein the reference numerals for like parts with Fig. 15 to match.
  • the Fig. 17 shows the view of the transport anchor 1 after the Fertigstauchtreatment, in the direction of arrow XVII in Fig. 15 , It can be seen that a foot 21 is formed, which comprises with respect to the center axis M1 left and right trapezoidal foot parts 21 ', 21''.
  • Fig. 18 which is a section along the line XVIII-XVIII in Fig. 17 shows, it can be seen that a total of four foot parts 21 ', 21''are present and are between the legs 3, 4 intermediate sections 21 *.
  • the Fig. 19 shows a transport anchor 22, which consists of a machined steel rod 23 as a steel profile with a substantially semicircular cross-section.
  • the steel bar 23 is U-shaped with two legs 24, 25 and a bow 26, wherein the portion forming the sheet 26 is compressed prior to bending.
  • a foot 27 is integrally formed by hot diving, as to the FIGS. 4 to 7 is described.

Abstract

The transporting anchor (1) has a deformed and elongated steel profile with two axle stubs (3,4). An anchoring unit is provided at an end in a pre-fabricated concrete pieces, where the anchoring unit is a base (6) formed by hot compression. The base extends orthogonally to the longitudinal direction of the axle stubs. An independent claim is included for a method for manufacturing a transporting anchor.

Description

Die Erfindung betrifft einen Transportanker für Betonfertigteile der im Oberbegriff des Anspruchs 1 angegebenen Gattung sowie ein Verfahren zur Herstellung des Transportankers.The invention relates to a transport anchor for precast concrete of the type specified in the preamble of claim 1 and a method for producing the transport anchor.

Transportanker für Betonfertigteile werden vor dem Gießen des Betons in die Schalung eingebracht, wobei der zum Anbringen eines Hebezeugs vorgesehene Abschnitt des Transportankers mit einem Aussparungskörper versehen wird, der nach dem Aushärten des Betons bzw. bei Entfernen der Schalung entnommen wird. Auf diese Weise befindet sich der zum Anbringen des Hebezeugs dienende Kopf oder Bügel innerhalb der Kontur des Betonfertigteils und steht nicht über dieses hervor. Es sind verschiedene Arten von Transportankern bekannt.Transport anchors for precast concrete parts are introduced into the formwork before casting the concrete, wherein the provided for attaching a hoist portion of the lifting anchor is provided with a recess body, which is removed after curing of the concrete or when removing the formwork. In this way, the serving for attaching the hoist head or bow is located within the contour of the precast concrete part and is not about this. Various types of transport anchors are known.

Die DE 200 09 227 U1 beschreibt einen Transportanker, der im Wesentlichen aus einem Anschlussstück und Ankerstäben besteht. Das Anschlussstück ist eine rechteckige Stahlplatte, auf deren zur Kante des Betonfertigteils weisenden Seite eine Lasche mit einer Öse ausgebildet ist. Das Anschlussstück ist an den Ankerstäben angeschweißt, die zwischen Bewehrungsmatten gehalten werden. Durch diese Konstruktion soll einem Ausbrechen des Transportankers bzw. der Verankerungselemente entgegengewirkt werden.The DE 200 09 227 U1 describes a transport anchor, which consists essentially of a connector and anchor rods. The fitting is a rectangular steel plate, on whose side facing the edge of the precast concrete side a tab is formed with an eyelet. The fitting is attached to the Anchor rods welded, which are held between reinforcing mats. By this construction, a breaking of the transport anchor or the anchoring elements should be counteracted.

Aus der DE 297 06 644 U1 ist ein Transportanker für Stahlbetonfertigteile bekannt, der aus parallel zueinander verlaufenden Ankerprofilen besteht, welche einerseits zu einem Transporthaken geschlossen sind. Zwischen den parallelen Ankerprofilen erstrecken sich Querstege, die die Ankerprofile verbinden und damit die Steifigkeit des Transportankers erhöhen. Zur besseren Verankerung des Transportankers im Beton sind an den dem Transporthaken entlegenen Enden der Ankerprofile diese abgewinkelt oder umgebogen.From the DE 297 06 644 U1 a transport anchor for precast concrete elements is known, which consists of mutually parallel anchor profiles, which are closed on the one hand to a transport hook. Between the parallel anchor profiles extend transverse webs which connect the anchor profiles and thus increase the rigidity of the transport anchor. For better anchorage of the transport anchor in concrete, the anchor profiles are angled or bent at the ends of the transport hook remote from the transport hook.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde einen Transportanker der im Oberbegriff des Anspruchs 1 genannten Gattung zu schaffen, der einstückig ausgeführt und zur Übertragung großer Kräfte geeignet ist. Außerdem besteht die Aufgabe darin, ein Verfahren zur Herstellung eines solchen Transportankers zu schaffen.The present invention has for its object to provide a lifting anchor of the type mentioned in the preamble of claim 1, which is made in one piece and is suitable for transmitting large forces. In addition, the object is to provide a method for producing such a transport anchor.

Diese Aufgabe wird hinsichtlich des Transportankers durch die Merkmalskombination des Anspruchs 1 und hinsichtlich des Verfahrens durch die Merkmalskombination des Anspruchs 8 gelöst.This object is achieved with regard to the transport anchor by the combination of features of claim 1 and in terms of the method by the combination of features of claim 8.

Gemäß einer bevorzugten Weiterbildung der Erfindung ist die Aufnahme für das Hebezeug ein die beiden Schenkel verbindender Bogen, dessen Innenradius der Aufnahme des Hebezeugs angepasst ist. Dadurch entspricht der Bogen im Wesentlichen der üblichen Form der Hebezeuge, so dass eine definierte Krafteinleitung des Transportankers in das Hebezeug gegeben ist. Darüber hinaus ist es vorteilhaft, dass das Stahlprofil im Abschnitt des Bogens verpresst ist, wobei das Stahlprofil im Bogen in radialer Richtung ein Maß aufweist, das geringer ist als der Durchmesser des Stahlprofils und im Bogen eine Breite aufweist, die größer ist als dieser Durchmesser. Dadurch hat das Stahlprofil im Abschnitt des Bogens eine Querschnittsform, bei der die Höhe des Materials geringer ist als die Breite, wobei das Verhältnis der Dicke in radialer Richtung zur Breite 1:1,23 beträgt.According to a preferred embodiment of the invention, the receptacle for the hoist is a bow connecting the two legs, whose inner radius is adapted to the recording of the hoist. As a result, the bow substantially corresponds to the usual Shape of the hoists, so that a defined force introduction of the lifting anchor is given in the hoist. Moreover, it is advantageous that the steel profile is pressed in the section of the sheet, wherein the steel profile in the arc in the radial direction has a dimension which is less than the diameter of the steel profile and in the arc has a width which is greater than this diameter. As a result, the steel profile in the section of the sheet has a cross-sectional shape in which the height of the material is smaller than the width, wherein the ratio of the thickness in the radial direction to the width is 1: 1.23.

Das Stahlprofil kann beispielsweise ein Rundstahl oder ein Stab mit halbkreisförmigem, ovalem oder rechteckförmigem Querschnitt sein. Vorzugsweise verlaufen die Schenkel parallel zueinander, und der Abstand zwischen den Schenkeln ist ≤ dem Durchmesser des Stahlprofils. Auf diese Weise ist der Abstand der Schenkel zueinander gering genug, um an den Schenkeln einen gemeinsamen Fuß anzuformen. Dabei ist es zweckmäßig, dass mindestens ein sich zwischen den Schenkeln erstreckender Zwischenabschnitt geformt ist, über die die Schenkel miteinander verbunden sind.The steel profile may for example be a round bar or a bar with semicircular, oval or rectangular cross-section. Preferably, the legs are parallel to each other, and the distance between the legs is ≤ the diameter of the steel profile. In this way, the distance between the legs to each other is low enough to form a common foot on the legs. It is expedient that at least one extending between the legs intermediate portion is formed, over which the legs are connected to each other.

Außerdem ist es vorteilhaft, dass der Fuß bezogen auf eine Mittelebene des Tragankers mindestens zwei seitlich nach außen stehende Fußteile umfasst, deren Höhe zum äußeren Rand hin abnimmt. Eine solche Form des Fußes ist aus herstellungstechnischen Gründen gewählt und führt zu einer großen Fläche des Fußes und damit zu einer guten Verankerung im Beton.Moreover, it is advantageous that the foot comprises at least two laterally outwardly standing foot parts, the height of which decreases relative to the outer edge, with respect to a center plane of the support anchor. Such a shape of the foot is chosen for manufacturing reasons and leads to a large area of the foot and thus to a good anchorage in the concrete.

Eine bevorzugte Weiterbildung des Verfahrens zur Herstellung des Transportankers besteht darin, dass das Stahlprofil in mindestens einem Abschnitt verpresst wird, wodurch ein Querschnitt mit einer Dicke und einer Breite entsteht, wobei das Stahlprofil in diesem Abschnitt so gebogen wird, dass die Dicke in radialer Richtung des Bogens verläuft.A preferred development of the method for producing the transport anchor is that the steel profile is pressed in at least one section, whereby a cross section with a thickness and a width is formed, wherein the steel profile is bent in this section so that the thickness in the radial direction of Arch runs.

In weiterer Ausgestaltung des Verfahrens ist vorgesehen, dass mindestens ein zweiter Abschnitt des Stahlprofils verpresst wird und das Stahlprofil in diesem Abschnitt ebenfalls zu einem zweiten Bogen geformt wird, so dass sich die Form eines Kettengliedes ergibt und an aneinander liegenden Stirnseiten des Stahlprofils eine Schweißnaht erzeugt wird. Damit ist bereits sichergestellt, dass der Fuß einstückig ausgeführt wird, was zu einer äußert hohen Festigkeit des Transportankers in diesem Bereich führt. Dabei wird gemäß einem weiteren Verfahrensmerkmal das Material des Kettengliedes im Abschnitt mit dem zweiten Bogen sowie dem angrenzenden Bereich der Schenkel durch Warmstauchen zum Fuß geformt. In weiterer Ausgestaltung des Verfahrens ist vorgesehen, dass in einer ersten Stauchstufe an den Schenkeln ein gemeinsamer Block erzeugt wird und dann das Material, bezogen auf eine Mittelebene des Transportankers, seitlich nach außen gestaucht und der Fuß erzeugt wird.In a further embodiment of the method it is provided that at least a second section of the steel profile is pressed and the steel profile is also formed in this section to form a second arc, so that the shape of a chain link results and at adjacent end faces of the steel profile, a weld is produced , This already ensures that the foot is made in one piece, which leads to an extremely high strength of the transport anchor in this area. In this case, according to a further process feature, the material of the chain link is formed in the section with the second arc and the adjacent region of the legs by hot dipping to the foot. In a further embodiment of the method it is provided that in a first compression step on the legs of a common block is generated and then the material, based on a center plane of the transport anchor, laterally compressed to the outside and the foot is generated.

In einer alternativen Ausführung des Verfahrens wird an jedem Schenkel ein separater Fuß angeformt.In an alternative embodiment of the method, a separate foot is formed on each leg.

Ausführungsbeispiele der Erfindung sind nachstehend anhand der Zeichnung näher erläutert. In der Zeichnung zeigt:

Fig. 1
einen aus einem Stahlprofil geformten Transportanker,
Fig. 2
ein Kettenglied aus einem Rundmaterial,
Fig. 3
in einer abgewickelten Darstellung einen Bogenbereich des Kettengliedes,
Fig. 4
die Form des Transportankers nach einer ersten Stauchstufe,
Fig. 5
einen Schnitt entlang der Linie V-V in Fig. 4,
Fig. 6
die Form des Transportankers nach der Fertigstauch- stufe,
Fig. 7
einen Schnitt entlang der Linie VII-VII in Fig. 6,
Fig. 8
eine Ansicht in Richtung des Pfeiles VIII in Fig. 6,
Fig. 9
den oberen Bereich des Transportankers mit Kupplung,
Fig. 10
eine Ausführungsvariante des Kettengliedes zu Fig. 2,
Fig. 11
eine weitere Ausführungsvariante des Kettengliedes,
Fig. 12
die Form des aus einem Kettenglied in der Fig. 11 ge- bildeten Transportankers nach einer ersten Stauch- stufe,
Fig. 13
die Form des Transportankers nach dem Fertigstauchen,
Fig. 14
einen zu einem U-Stück verformten Rundstahl,
Fig. 15
die Form des aus dem U-Stück zu fertigenden Transportankers nach einer ersten Stauchstufe,
Fig. 16
einen Schnitt entlang der Linie XVI-XVI in Fig. 15,
Fig. 17
die Form des Transportankers der Fig. 15 nach der Fertigstauchstufe,
Fig. 18
einen Schnitt entlang der Linie XVIII-XVIII in Fig. 17,
Fig. 19
einen aus einem halbrunden Stab geformten Transport- anker.
Embodiments of the invention are explained below with reference to the drawing. In the drawing shows:
Fig. 1
a transport anchor made of a steel profile,
Fig. 2
a chain link made of a round material,
Fig. 3
in an unwound representation a bow portion of the chain link,
Fig. 4
the shape of the lifting anchor after a first crushing step,
Fig. 5
a section along the line VV in Fig. 4 .
Fig. 6
the shape of the lifting anchor after the final crushing step,
Fig. 7
a section along the line VII-VII in Fig. 6 .
Fig. 8
a view in the direction of the arrow VIII in Fig. 6 .
Fig. 9
the upper part of the lifting anchor with coupling,
Fig. 10
a variant of the chain link to Fig. 2 .
Fig. 11
a further embodiment of the chain link,
Fig. 12
the shape of a chain link in the Fig. 11 formed transport anchor after a first compression step,
Fig. 13
the shape of the transport anchor after finishing,
Fig. 14
a round bar deformed into a U-piece,
Fig. 15
the shape of the transport anchor to be manufactured from the U-piece after a first upsetting step,
Fig. 16
a section along the line XVI-XVI in Fig. 15 .
Fig. 17
the shape of the transport anchor the Fig. 15 after the final crushing step,
Fig. 18
a section along the line XVIII-XVIII in Fig. 17 .
Fig. 19
a transport anchor shaped from a semicircular rod.

Die Fig. 1 zeigt einen Transportanker 1, der aus einem länglichen Stahlprofil besteht, nämlich einem bearbeiteten Rundstahl 2. Der Rundstahl 2 ist U-förmig und umfasst zwei Schenkel 3, 4 und einen Bogen 5, wobei der Rundstahl 2 in einem Abschnitt A1, in dem sich der Bogen 5 befindet, verpresst ist, wie später noch näher erläutert wird. An den dem Bogen 5 entlegenen Enden der Schenkel 3, 4 ist ein durch Warmstauchen des Rundstahls 2 geformter Fuß 6 vorgesehen, der einen sicheren Halt des Transportankers 1 im Beton gewährleistet. Wenn der Transportanker 1 im Betonteil eingegossen ist, befindet sich der Bogen 5 in einer Aussparung des Betons und ist für die Verbindung mit einem Hebezeug zugänglich.The Fig. 1 shows a lifting anchor 1, which consists of an elongated steel profile, namely a machined round steel 2. The round steel 2 is U-shaped and comprises two legs 3, 4 and a sheet 5, wherein the round steel 2 in a section A1, in which the Sheet 5 is pressed, as will be explained later. At the bow 5 remote ends of the legs 3, 4 a formed by hot diving of the round steel 2 foot 6 is provided, which ensures a secure hold of the transport anchor 1 in the concrete. When the transport anchor 1 is poured into the concrete part, the sheet 5 is located in a recess of the concrete and is accessible for connection to a hoist.

Zur Herstellung des Transportankers 1 gibt es verschiedene Möglichkeiten, wobei zunächst der Rundstahl 2 im Abschnitt A1 derart verformt wird, dass der Bogen 5 entsteht. Gemäß dem Ausführungsbeispiel der Fig. 2 wird aus dem Rundstahl 2 nach Erzeugung des Bogens 5 ein Kettenglied 7 geformt, d. h. die freien Enden der Schenkel 3, 4 werden mit gegeneinander gerichteten Bögen 8, 9 versehen und an deren Stirnseiten miteinander verschweißt, so dass eine Schweißnaht 10 für die Festigkeit des Kettengliedes 7 sorgt. Auch im Bereich der Bögen 8, 9 ist in einem Abschnitt A2 das Kettenglied 7 verpresst, so dass sich die gleiche Form ergibt wie am Bogen 5.For the production of the transport anchor 1, there are various possibilities, wherein first the round steel 2 in the section A1 is deformed such that the sheet 5 is formed. According to the embodiment of the Fig. 2 is formed from the round steel 2 after generation of the arc 5, a chain link 7, ie, the free ends of the legs 3, 4 are provided with oppositely directed sheets 8, 9 and welded together at the end faces, so that a weld 10 for the strength of the chain link 7 provides. Also in the region of the arches 8, 9, the chain link 7 is pressed in a section A2, so that the same shape results as on the sheet fifth

Die Fig. 3 zeigt eine abgewickelte Darstellung des Bogens 5, woraus hervorgeht, dass im Abschnitt A1 das Stahlprofil bzw. der Rundstahl 2 vor der Anfertigung des Bogens 5 durch eine Verpressung eine geringere Dicke d aufweist als der Durchmesser D des Stahlprofils bzw. des Rundstahls 2 im Abschnitt der Schenkel 3, 4. Nach dem Verpressen des betreffenden Abschnitts A1 erfolgt das Biegen des Rundstahls 2 zur Erzeugung des Bogens 5 bzw. in gleicher Weise auch der Bögen 8 und 9.The Fig. 3 shows a developed view of the sheet 5, from which it follows that in section A1, the steel profile or the round bar 2 before making the sheet 5 by pressing a smaller thickness d than the diameter D of the steel section or the round steel 2 in the section of Legs 3, 4. After pressing of the relevant section A1, the bending of the round steel 2 to produce the sheet 5 or in the same manner also of the sheets 8 and 9 takes place.

In Fig. 4 ist die zwischenzeitliche Form des Transportankers nach einer ersten Stauchstufe dargestellt. Der Bogen 5 und der größte Teil der Länge der Schenkel 3, 4 ist unverändert zu Fig. 2, aber der in Fig. 2 untere Bereich des Kettengliedes 7 ist durch Warmstauchen zu einem Block 11 geformt. Es ist aus Fig. 4 ersichtlich, dass der Bogen 5 einen Innenradius R aufweist, der geringer ist als der Durchmesser D des Rundstahls 2 an den Schenkeln 3, 4. Der Abstand S zwischen den Schenkeln 3, 4 ist ≤ dem Durchmesser D. Die Fig. 5 zeigt einen Schnitt entlang der Linie V-V in Fig. 4.In Fig. 4 the intermediate form of the lifting anchor is shown after a first crushing step. The arc 5 and most of the length of the legs 3, 4 is unchanged Fig. 2 but the in Fig. 2 lower portion of the chain link 7 is formed by hot dipping into a block 11. It is off Fig. 4 it can be seen that the sheet 5 has an inner radius R which is smaller than the diameter D of the round steel 2 on the legs 3, 4. The distance S between the legs 3, 4 is ≤ the diameter D. The Fig. 5 shows a section along the line VV in Fig. 4 ,

Die Fig. 6 zeigt die Ansicht des Transportankers 1 nach der Fertigstauchstufe, und zwar in Richtung des Pfeiles VI in Fig. 4. Es ist daraus ersichtlich, dass im Bogen 5 der Rundstahl 2 eine Dicke d aufweist, die durch das Verpressen geringer ist als der Durchmesser D des Rundstahls 2 im Bereich der Schenkel 3, 4. Durch das Verpressen ist aber die Breite b des Bogens 5 größer als der Durchmesser D, so dass die Querschnittsflächen im Bogen 5 und den Schenkeln 3, 4 vom Betrag her gleich groß sind. Der Fuß 6 ist durch Warmstauchen so geformt, dass zwei im Querschnitt trapezförmige Fußteile 6', 6'' symmetrisch zu einer Mittelachse M angeordnet sind, wobei die Höhe der Fußteile 6', 6'' zum äußeren Rand hin abnimmt.The Fig. 6 shows the view of the transport anchor 1 after the Fertigstauchstufe, in the direction of arrow VI in Fig. 4 , It can be seen that in the sheet 5 of the round steel 2 has a thickness d, which is smaller by the compression than the diameter D of the round bar 2 in the region of the legs 3, 4. By pressing but the width b of the sheet 5 is greater as the diameter D, so that the cross-sectional areas in the sheet 5 and the legs 3, 4 are equal in magnitude. The foot 6 is formed by hot dipping so that two in cross-section trapezoidal foot parts 6 ', 6''are arranged symmetrically to a central axis M, wherein the height of the foot parts 6', 6 '' decreases towards the outer edge.

In Fig. 7 ist der Schnitt entlang der Linie VII-VII in Fig. 6 gezeigt, woraus die Form der Fußteile 6', 6'' und somit auch des Fußes 6 in der Draufsicht erkennbar ist. Mit dem Bezugszeichen M2 ist eine Mittelebene des Transportankers angegeben und es ist ersichtlich, dass die Fußteile 6', 6'' symmetrisch zu dieser Mittelebene M2 angeordnet sind. Zwischen den Schenkeln 3, 4 ist ein Zwischenabschnitt 6* des Fußes 6 angeordnet, der in die sich seitlich anschließenden Fußteile 6', 6'' übergeht.In Fig. 7 is the section along the line VII-VII in Fig. 6 shown, from which the shape of the foot parts 6 ', 6''and thus also of the foot 6 can be seen in plan view. The reference symbol M2 indicates a center plane of the transport anchor and it can be seen that the foot parts 6 ', 6 "are arranged symmetrically to this center plane M2. Between the legs 3, 4, an intermediate portion 6 * of the foot 6 is arranged, which merges into the laterally adjoining foot parts 6 ', 6''.

Die Fig. 8 zeigt den Transportanker 1 in einer Ansicht gemäß Pfeil VIII in Fig. 6, wobei die Bezugszeichen der jeweiligen Teile mit denjenigen der Figuren 6 und 7 übereinstimmen.The Fig. 8 shows the transport anchor 1 in a view according to arrow VIII in Fig. 6 , wherein the reference numerals of the respective parts with those of FIGS. 6 and 7 to match.

In Fig. 9 ist der obere Bereich des Transportankers 1 mit seinem Bogen 5 dargestellt, an dem eine Kupplung 12 befestigt werden kann, wobei ein entsprechend geformter Haken 13 unter den Bogen 5 bewegt werden kann, um diesen zu durchgreifen. Derartige Kupplungen 12 sind an sich bekannt.In Fig. 9 the upper region of the transport anchor 1 is shown with its bow 5, to which a coupling 12 can be attached, with a correspondingly shaped hook 13 can be moved under the sheet 5 in order to reach through this. Such couplings 12 are known per se.

Die Fig. 10 zeigt ein Kettenglied 14, das ebenso aus einem Rundstahl 2 gefertigt ist, wie das Kettenglied 7 in Fig. 2. Allerdings ist am Schenkel 4 des Kettengliedes 14 ein 180° Bogen 16 angeformt, der zu einer Stirnfläche des Schenkels 3 gerichtet ist, so dass eine Schweißnaht 15 unterhalb des Schenkels 3 liegt. Im Übrigen ist das Kettenglied 14 identisch mit dem Kettenglied 7 in Fig. 2.The Fig. 10 shows a chain link 14, which is also made of a round steel 2, as the chain link 7 in Fig. 2 , However, a 180 ° arc 16 is integrally formed on the leg 4 of the chain link 14, which is directed to an end face of the leg 3, so that a weld 15 is below the leg 3. Incidentally, the chain link 14 is identical to the chain link 7 in FIG Fig. 2 ,

In Fig. 11 ist eine weitere Ausführungsvariante eines Kettengliedes 17 dargestellt, wobei die Enden des Rundstahls 2 im Bereich des Schenkels 3 zusammengeführt sind und dort eine Schweißnaht 18 vorgesehen ist. Im Übrigen weist das Kettenglied 17 den oberen Bogen 5 und unteren Bogen 16 auf, die jeweils aus den verpressten Abschnitten A1 und A2 des Rundstahls 2 gebildet sind.In Fig. 11 a further embodiment variant of a chain link 17 is shown, wherein the ends of the round steel 2 are brought together in the region of the leg 3 and there is a weld 18 is provided. Incidentally, the chain link 17 has the upper arc 5 and lower arc 16, which are each formed from the compressed sections A1 and A2 of the round bar 2.

Die Fig. 12 zeigt die zwischenzeitliche Form des Transportankers nach einer Stauchstufe, wobei diese Darstellung derjenigen in Fig. 4 entspricht und lediglich aufgrund der Position der Schweißnaht 18 im Kettenglied 17 diese noch nach dem Warmstauchen sichtbar ist. Der Block 11 ist nach dieser ersten Stauchstufe ebenfalls gleich.The Fig. 12 shows the intermediate form of the lifting anchor after a compression step, this representation of those in Fig. 4 corresponds and only due to the position of the weld 18 in the chain link 17, this is still visible after warm upsetting. The block 11 is also the same after this first compression step.

Die Fig. 13 zeigt die Ansicht des Transportankers 1 nach der Fertigstauchstufe in Richtung des Pfeiles XIII in Fig. 12, wobei der Fuß 6 ebenfalls so geformt ist, wie zu Fig. 6 beschrieben, so dass die Bezugszeichen übereinstimmen.The Fig. 13 shows the view of the transport anchor 1 after the Fertigstauchstufe in the direction of arrow XIII in Fig. 12 , wherein the foot 6 is also shaped as to Fig. 6 described so that the reference numerals match.

In Fig. 14 ist ein zu einem U-Stück 19 gebogener Rundstahl 2 gezeigt, wobei vor dem Biegen der für den Bogen 5 vorgesehene Abschnitt A1 verpresst ist, wie dies bereits zu den Figuren 2, 3 und 6 beschrieben wurde. Das U-Stück 19 umfasst daher die Schenkel 3, 4 und den Bogen 5. An den freien Enden der Schenkel 3, 4 erfolgt dann das Warmstauchen, so dass nach einer ersten Stauchstufe - wie in Fig. 15 gezeigt - ein Block 20 geformt ist, der sich aus den Teilblöcken 20', 20'' zusammensetzt. Dies resultiert aus den freien Enden, die durch das Warmstauchen zu einem Block 20 verbunden werden.In Fig. 14 a bent to a U-piece 19 round bar 2 is shown, wherein before bending provided for the sheet 5 section A1 is pressed, as already to the FIGS. 2, 3 and 6 has been described. The U-piece 19 therefore includes the legs 3, 4 and the bow 5. At the free ends of the legs 3, 4 then takes the hot diving, so that after a first compression step - as in Fig. 15 shown - a block 20 is formed, which is composed of the sub-blocks 20 ', 20''. This results from the free ends, which are connected by the hot diving to a block 20.

In Fig. 16 ist der Schnitt entlang der Linie XVI-XVI in Fig. 15 gezeigt, wobei die Bezugszeichen für gleiche Teile mit Fig. 15 übereinstimmen.In Fig. 16 is the section along the line XVI-XVI in Fig. 15 shown, wherein the reference numerals for like parts with Fig. 15 to match.

Die Fig. 17 zeigt die Ansicht des Transportankers 1 nach der Fertigstauchstufe, und zwar in Richtung des Pfeiles XVII in Fig. 15. Es ist daraus ersichtlich, dass ein Fuß 21 geformt ist, der bezogen auf die Mittelachse M1 links und rechts trapezförmige Fußteile 21', 21'' umfasst.The Fig. 17 shows the view of the transport anchor 1 after the Fertigstauchstufe, in the direction of arrow XVII in Fig. 15 , It can be seen that a foot 21 is formed, which comprises with respect to the center axis M1 left and right trapezoidal foot parts 21 ', 21''.

Aus Fig. 18, die einen Schnitt entlang der Linie XVIII-XVIII in Fig. 17 zeigt, ist ersichtlich, dass insgesamt vier Fußteile 21', 21'' vorhanden sind und sich zwischen den Schenkeln 3, 4 Zwischenabschnitte 21* befinden.Out Fig. 18 which is a section along the line XVIII-XVIII in Fig. 17 shows, it can be seen that a total of four foot parts 21 ', 21''are present and are between the legs 3, 4 intermediate sections 21 *.

Die Fig. 19 zeigt einen Transportanker 22, der aus einem bearbeiteten Stahlstab 23 als Stahlprofil mit im Wesentlichen halbkreisförmigem Querschnitt besteht. Der Stahlstab 23 ist U-förmig gestaltet mit zwei Schenkeln 24, 25 und einem Bogen 26, wobei der Abschnitt, der den Bogen 26 bildet, vor dem Biegen verpresst wird. An den anderen Enden der Schenkel 24, 25 ist durch Warmstauchen ein Fuß 27 angeformt, so wie dies zu den Figuren 4 bis 7 beschrieben ist.The Fig. 19 shows a transport anchor 22, which consists of a machined steel rod 23 as a steel profile with a substantially semicircular cross-section. The steel bar 23 is U-shaped with two legs 24, 25 and a bow 26, wherein the portion forming the sheet 26 is compressed prior to bending. At the other ends of the legs 24, 25, a foot 27 is integrally formed by hot diving, as to the FIGS. 4 to 7 is described.

Claims (14)

Transportanker (1; 22) für Betonfertigteile, bestehend aus einem verformten länglichen Stahlprofil, wobei an einem Ende des Transportankers (1; 22) eine Aufnahme für ein Hebezeug und am anderen Ende eine Vorrichtung zur Verankerung im Betonfertigteil vorgesehen sind,
dadurch gekennzeichnet, dass das Stahlprofil zwei Schenkel (3, 4; 24, 25) umfasst und die Vorrichtung zur Verankerung ein aus dem Material der Schenkel (3, 4; 24, 25) des Stahlprofils durch Warmstauchen geformter Fuß (6; 21; 27) ist, der sich im Wesentlichen orthogonal zur Längsrichtung der Schenkel (3, 4; 24, 25) erstreckt.
Transport anchors (1; 22) for precast concrete elements, consisting of a deformed elongated steel profile, wherein at one end of the transport anchor (1; 22) a receptacle for a hoist and at the other end a device for anchoring in the precast concrete part are provided
characterized in that the steel profile comprises two legs (3, 4; 24, 25) and the anchoring device comprises a foot (6, 21, 27, 27) formed from the material of the legs (3, 4, 24, 25) of the steel profile by hot dipping ) extending substantially orthogonal to the longitudinal direction of the legs (3, 4; 24, 25).
Transportanker nach Anspruch 1,
dadurch gekennzeichnet, dass die Aufnahme für das Hebezeug ein die beiden Schenkel (3, 4; 24, 25) verbindender Bogen (5; 26) ist, dessen Innenradius (R) der Aufnahme eines Hebezeugs angepasst ist.
Transport anchor according to claim 1,
characterized in that the receptacle for the hoist is a bow (5, 26) connecting the two legs (3, 4; 24, 25), the inner radius (R) of which is adapted to receive a hoist.
Transportanker nach Anspruch 2,
dadurch gekennzeichnet, dass das Stahlprofil in einem Abschnitt (A1) des Bogens (5; 26) verpresst ist, wobei das Stahlprofil im Bogen (5; 26) in radialer Richtung eine Dicke (d) aufweist, die geringer ist als der Durchmesser (D) des Stahlprofils, und das Stahlprofil im Bogen (5; 26) eine Breite (b) aufweist, die größer ist als der Durchmesser (D).
Transport anchor according to claim 2,
characterized in that the steel profile in a section (A1) of the sheet (5; 26) is compressed, wherein the steel profile in the arc (5; 26) in the radial direction has a thickness (d) which is smaller than the diameter (D) of the steel profile, and the steel profile in the arc (5; 26) has a width (b) greater than the diameter (D).
Transportanker nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Stahlprofil ein Rundstahl (2) oder ein Stab (23) mit halbkreisförmigem, ovalem oder rechteckförmigem Querschnitt ist.Transport anchor according to one of claims 1 to 3, characterized in that the steel profile is a round steel (2) or a rod (23) with semicircular, oval or rectangular cross-section. Transportanker nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Schenkel (3, 4; 24, 25) parallel zueinander verlaufen und der Abstand (S) zwischen den Schenkeln (3, 4; 24, 25) ≤ dem Durchmesser (D) des Stahlprofils ist.Transport anchor according to one of claims 1 to 4, characterized in that the legs (3, 4; 24, 25) extend parallel to each other and the distance (S) between the legs (3, 4; 24, 25) ≤ the diameter (D ) of the steel profile. Transportanker nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Enden der Schenkel (3, 4; 24, 25) zu einem gemeinsamen Fuß (6; 21; 27) mit mindestens einem sich zwischen den Schenkeln (3, 4; 24, 25) erstreckenden Zwischenabschnitt (6*; 21*) geformt sind.Transport anchor according to one of claims 1 to 5, characterized in that the ends of the legs (3, 4, 24, 25) to a common foot (6; 21; 27) with at least one between the legs (3, 4; , 25) extending intermediate portion (6 *, 21 *) are formed. Transportanker nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Fuß bezogen auf eine Mittelebene (M2) des Tragankers (1) mindestens zwei seitlich nach außen stehende Fußteile (6', 6''; 21', 21'') umfasst, deren Höhe zum äußeren Rand hin abnimmt.Transport anchor according to one of claims 1 to 6, characterized in that the foot relative to a median plane (M2) of the support anchor (1) at least two laterally outwardly standing foot parts (6 ', 6'',21', 21 '') whose height decreases towards the outer edge. Verfahren zur Herstellung eines Transportankers nach einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet, dass ein längliches Stahlprofil derart zu einem Bogen (5; 26) geformt wird, dass sich an den Abschnitt des Bogens zwei Schenkel (3, 4; 24, 25) anschließen, die mindestens annähernd parallel verlaufen und an deren dem Bogen entlegenen Enden durch Warmstauchen des Materials ein Fuß (6; 21; 27) angeformt wird.
Method for producing a transport anchor according to one of claims 1 to 7,
characterized in that an elongated steel profile is formed into a sheet (5; 26) such that two legs (3, 4; 24, 25) adjoin the portion of the sheet which run at least approximately parallel and at the end of which the sheet is remote Ends by hot upsetting the material of a foot (6; 21; 27) is formed.
Verfahren nach Anspruch 8,
dadurch gekennzeichnet, dass an den Enden der Schenkel (3, 4; 24, 25) ein gemeinsamer Fuß (6; 21; 27) geformt wird.
Method according to claim 8,
characterized in that at the ends of the legs (3, 4; 24, 25) a common foot (6; 21; 27) is formed.
Verfahren nach Anspruch 8 oder 9,
dadurch gekennzeichnet, dass das Stahlprofil in mindestens einem Abschnitt (A1) verpresst wird, wodurch ein Querschnitt mit einer Dicke (d) und einer Breite (b) entsteht und das Stahlprofil in diesem Abschnitt (A1) so gebogen wird, dass die Dicke (d) in radialer Richtung des Bogens (5) verläuft.
Method according to claim 8 or 9,
characterized in that the steel profile is crimped in at least one section (A1), whereby a cross-section with a thickness (d) and a width (b) is formed and the steel profile in this section (A1) is bent such that the thickness (i.e. ) in the radial direction of the arc (5).
Verfahren nach Anspruch 10,
dadurch gekennzeichnet, dass mindestens ein zweiter Abschnitt (A2) des Stahlprofils verpresst wird und das Stahlprofil in diesem Abschnitt (A2) ebenfalls zu einem zweiten Bogen (8, 9; 16) geformt wird, so dass sich die Form eines Kettengliedes (7, 14, 17) ergibt und an aneinander liegenden Stirnseiten des Stahlprofils eine Schweißnaht (10, 15, 18) erzeugt wird.
Method according to claim 10,
characterized in that at least a second section (A2) of the steel profile is crimped and the steel profile in this section (A2) is likewise formed into a second arc (8, 9; 16), so that the shape of a chain link (7, 14 , 17) and on adjacent end faces of the steel profile, a weld (10, 15, 18) is generated.
Verfahren nach Anspruch 11,
dadurch gekennzeichnet, dass das Material des Kettengliedes (7, 14, 17) mit dem zweiten Bogen (8, 9; 16) sowie der angrenzende Bereich der Schenkel (3, 4) durch Warmstauchen zum Fuß (6; 21) geformt wird.
Method according to claim 11,
characterized in that the material of the chain link (7, 14, 17) with the second arc (8, 9, 16) and the adjacent region of the legs (3, 4) by hot upsetting to the foot (6; 21) is formed.
Verfahren nach einem der Ansprüche 10 bis 12,
dadurch gekennzeichnet, dass in einer ersten Stauchstufe an den Schenkeln (3, 4) ein gemeinsamer Block (11; 20) erzeugt wird und dann das Material bezogen auf eine Mittelebene (M2) des Transportankers seitlich nach außen gestaucht und der Fuß (6; 21) erzeugt wird.
Method according to one of claims 10 to 12,
characterized in that in a first upsetting step on the legs (3, 4) a common block (11; 20) is produced and then the material is laterally compressed outwards relative to a median plane (M2) of the transport anchor and the foot (6; 21 ) is produced.
Verfahren nach Anspruch 8 oder 10,
dadurch gekennzeichnet, dass an jedem Schenkel (3, 4) ein separater Fuß angeformt wird.
Method according to claim 8 or 10,
characterized in that on each leg (3, 4) a separate foot is formed.
EP08016817A 2008-09-25 2008-09-25 Anchor for transporting pre-fabricated concrete pieces and method for manufacturing such an anchor Not-in-force EP2169144B1 (en)

Priority Applications (2)

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EP08016817A EP2169144B1 (en) 2008-09-25 2008-09-25 Anchor for transporting pre-fabricated concrete pieces and method for manufacturing such an anchor
AT08016817T ATE531873T1 (en) 2008-09-25 2008-09-25 TRANSPORT ANCHOR FOR PRECAST CONCRETE PARTS AND METHOD FOR PRODUCING SUCH A TRANSPORT ANCHOR

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EP08016817A EP2169144B1 (en) 2008-09-25 2008-09-25 Anchor for transporting pre-fabricated concrete pieces and method for manufacturing such an anchor

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2159792A5 (en) 1971-11-12 1973-06-22 Tenar Ag
DE3930842A1 (en) * 1989-06-07 1990-12-13 Becker Pruente Gmbh METHOD FOR PRODUCING A ROUND LINK CHAIN
DE29706644U1 (en) 1997-04-14 1997-08-14 Bauersfeld Fred Dipl Ing Concrete anchors for reinforced concrete structures
DE10127870A1 (en) * 2001-06-08 2002-12-12 Georg Weidner Transporting or installation anchor has at least one longitudinal anchoring leg guided through hole extending transversely through cross piece, and anchoring leg on hole side opposite loop has plastically deformable section
US20070186492A1 (en) * 2006-02-15 2007-08-16 Dayton Superior Corporation Lifting fixture for concrete structures
WO2007118287A1 (en) 2006-04-19 2007-10-25 Danley Construction Products Pty Ltd An anchor for use in joining concrete slabs

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2159792A5 (en) 1971-11-12 1973-06-22 Tenar Ag
DE3930842A1 (en) * 1989-06-07 1990-12-13 Becker Pruente Gmbh METHOD FOR PRODUCING A ROUND LINK CHAIN
DE29706644U1 (en) 1997-04-14 1997-08-14 Bauersfeld Fred Dipl Ing Concrete anchors for reinforced concrete structures
DE10127870A1 (en) * 2001-06-08 2002-12-12 Georg Weidner Transporting or installation anchor has at least one longitudinal anchoring leg guided through hole extending transversely through cross piece, and anchoring leg on hole side opposite loop has plastically deformable section
US20070186492A1 (en) * 2006-02-15 2007-08-16 Dayton Superior Corporation Lifting fixture for concrete structures
WO2007118287A1 (en) 2006-04-19 2007-10-25 Danley Construction Products Pty Ltd An anchor for use in joining concrete slabs

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ATE531873T1 (en) 2011-11-15

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