EP2169144B1 - Ancrage pour transporter des produits finis en béton et procédé de fabrication d'un tel ancrage de transport - Google Patents

Ancrage pour transporter des produits finis en béton et procédé de fabrication d'un tel ancrage de transport Download PDF

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Publication number
EP2169144B1
EP2169144B1 EP08016817A EP08016817A EP2169144B1 EP 2169144 B1 EP2169144 B1 EP 2169144B1 EP 08016817 A EP08016817 A EP 08016817A EP 08016817 A EP08016817 A EP 08016817A EP 2169144 B1 EP2169144 B1 EP 2169144B1
Authority
EP
European Patent Office
Prior art keywords
legs
steel profile
anchor
bow
section
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.)
Not-in-force
Application number
EP08016817A
Other languages
German (de)
English (en)
Other versions
EP2169144A1 (fr
Inventor
Klaus Fröhlich
Dr.-Ing. Heidolf Thorsten
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.)
Leviat GmbH
Original Assignee
Halfen GmbH and Co KG
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 Halfen GmbH and Co KG filed Critical Halfen GmbH and Co KG
Priority to AT08016817T priority Critical patent/ATE531873T1/de
Priority to EP08016817A priority patent/EP2169144B1/fr
Publication of EP2169144A1 publication Critical patent/EP2169144A1/fr
Application granted granted Critical
Publication of EP2169144B1 publication Critical patent/EP2169144B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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

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.
  • a transport anchor for precast concrete parts which consists of a deformed elongated steel profile.
  • a receptacle for a hoist is formed at one end of the lifting anchor and provided at the other end a device for anchoring in the precast concrete part.
  • the transport anchor consists of a metal profile, which comprises two legs and wherein for anchoring a formed of the material of the legs of the profile by upsetting foot is provided. The feet of the two legs are at a distance from each other.
  • a transport anchor which is provided from a metallic rod with integrally formed at its ends plate-shaped extensions.
  • the first straight rod is bent in the middle so that two parallel legs are formed, at the ends of which are located at a distance from each other extensions.
  • 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 sheet substantially corresponds to the usual shape of the hoists, so that a defined introduction of force 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.
  • 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.
  • 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 profile 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 trapezoidal in cross-section 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 which shows the shape of the foot parts 6 ', 6 "and thus also of the foot 6.
  • the reference symbol M2 indicates a center plane of the transport anchor and it can be seen that the foot parts 6', 6" are symmetrical to the latter Center plane M2 are arranged. 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 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 with respect to the center axis M1 left and right trapezoidal foot parts 21 ', 21 "includes.
  • 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.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Joining Of Building Structures In Genera (AREA)

Claims (11)

  1. Ancrage de transport (1 ; 22) pour produits finis en béton, composé d'un profilé en acier oblong déformé, étant précisé qu'il est prévu à une extrémité de l'ancrage de transport (1 ; 22) un logement pour un outil de levage, et à l'autre extrémité un dispositif pour l'ancrage dans le produit en béton, et étant précisé que le profilé en acier comprend deux branches (3, 4 ; 24, 25) et que le dispositif pour l'ancrage est constitué par un pied (6 ; 21 ; 27) qui est formé par écrasement à chaud à partir du matériau des branches (3, 4 ; 24, 25) du profilé en acier et qui est globalement orthogonal par rapport au sens longitudinal des branches (3, 4 ; 24, 25),
    caractérisé en ce que les extrémités des branches (3, 4 ; 24, 25), grâce à l'écrasement à chaud, prennent la forme d'un pied commun (6 ; 21 ; 27) avec au moins un tronçon intermédiaire (6* ; 21*) qui s'étend entre les branches (3, 4 ; 24, 25).
  2. Ancrage de transport selon la revendication 1, caractérisé en ce que le logement pour l'outil de levage est constitué par un arceau (5 ; 26) qui relie les deux branches (3, 4 ; 24, 25) et dont le rayon intérieur (R) est adapté au logement d'un outil de levage.
  3. Ancrage de transport selon la revendication 2, caractérisé en ce que le profilé en acier est comprimé, dans un tronçon (A1) de l'arceau (5 ; 26), étant précisé que ledit profilé en acier présente dans l'arceau (5 ; 26), dans le sens radial, une épaisseur (d) qui est inférieure au diamètre (D) du profilé en acier, et que le profilé en acier présente dans l'arceau (5 ; 26) une largeur (b) qui est supérieure au diamètre (D).
  4. Ancrage de transport selon l'une des revendications 1 à 3, caractérisé en ce que le profilé en acier est constitué par un rond en acier (2) ou par une barre (23) à section transversale semi-circulaire, ovale ou rectangulaire.
  5. Ancrage de transport selon l'une des revendications 1 à 4, caractérisé en ce que les branches (3, 4 ; 24, 25) sont parallèles et l'écartement (S) entre les branches (3, 4 ; 24, 25) ≤ au diamètre (D) du profilé en acier.
  6. Ancrage de transport selon l'une des revendications 1 à 5, caractérisé en ce que le pied, par rapport à un plan médian (M2) de l'ancrage de support (1), comprend au moins deux parties de pied (6', 6" ; 21', 21") qui sont dirigées latéralement vers l'extérieur et dont la hauteur va en diminuant vers le bord extérieur.
  7. Procédé pour fabriquer un ancrage de transport selon l'une des revendications 1 à 6,
    caractérisé en ce qu'on donne à un profilé en acier oblong la forme d'un arceau (5 ; 26) de telle sorte qu'il y ait à la suite du tronçon de l'arceau deux branches (3, 4 ; 24, 25) qui sont au moins approximativement parallèles, on rapporte par écrasement à chaud du matériau, aux extrémités des branches (3, 4 ; 24, 25) éloignées de l'arceau, un pied commun (6 ; 21 ; 27), et on forme au moins un tronçon intermédiaire (6* ; 21*) qui s'étend entre les branches.
  8. Procédé selon la revendication 7, caractérisé en ce que le profilé en acier est comprimé dans au moins un tronçon (A1), moyennant quoi il se forme une section transversale d'une épaisseur (d) et d'une largeur (b), et le profilé en acier est courbé dans ce tronçon (A1) de telle sorte que l'épaisseur (d) s'étende dans le sens radial de l'arceau (5).
  9. Procédé selon la revendication 8, caractérisé en ce qu'au moins un second tronçon (A2) du profilé en acier est comprimé et on donne aussi dans ce tronçon (A2) au profilé en acier la forme d'un second arceau (8, 9 ; 16), de sorte qu'on obtient la forme d'un maillon (7, 14, 17), et on réalise une soudure (10, 15, 18) sur les faces frontales du profilé en acier appliquées l'une contre l'autre.
  10. Procédé selon la revendication 9, caractérisé en ce qu'on donne au matériau du maillon (7, 14, 17) avec le second arceau (8, 9 ; 16) ainsi qu'à la zone contiguë des branches (3, 4) la forme d'un pied (6 ; 21) par écrasement à chaud.
  11. Procédé selon l'une des revendications 8 à 10, caractérisé en ce que lors d'une première étape d'écrasement, un bloc commun (11 ; 20) est produit sur les branches (3, 4), puis le matériau est écrasé latéralement vers l'extérieur par rapport à un plan médian (M2) de l'ancrage de transport et le pied (6 ; 21) est produit.
EP08016817A 2008-09-25 2008-09-25 Ancrage pour transporter des produits finis en béton et procédé de fabrication d'un tel ancrage de transport Not-in-force EP2169144B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT08016817T ATE531873T1 (de) 2008-09-25 2008-09-25 Transportanker für betonfertigteile und verfahren zur herstellung eines solchen transportankers
EP08016817A EP2169144B1 (fr) 2008-09-25 2008-09-25 Ancrage pour transporter des produits finis en béton et procédé de fabrication d'un tel ancrage de transport

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08016817A EP2169144B1 (fr) 2008-09-25 2008-09-25 Ancrage pour transporter des produits finis en béton et procédé de fabrication d'un tel ancrage de transport

Publications (2)

Publication Number Publication Date
EP2169144A1 EP2169144A1 (fr) 2010-03-31
EP2169144B1 true EP2169144B1 (fr) 2011-11-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP08016817A Not-in-force EP2169144B1 (fr) 2008-09-25 2008-09-25 Ancrage pour transporter des produits finis en béton et procédé de fabrication d'un tel ancrage de transport

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EP (1) EP2169144B1 (fr)
AT (1) ATE531873T1 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2159792A5 (fr) 1971-11-12 1973-06-22 Tenar Ag
DE3930842C2 (de) * 1989-06-07 1998-02-26 Becker Pruente Kettenwerke Gmb Verfahren zur Herstellung einer Rundgliederkette
DE29706644U1 (de) 1997-04-14 1997-08-14 Bauersfeld, Fred, Dipl.-Ing., 39240 Calbe Betonanker für Stahlbeton-Konstruktionen
DE10127870A1 (de) * 2001-06-08 2002-12-12 Georg Weidner Transport- oder Verlegeanker für Hohl- und Filigranwände mit Arretier- oder Sicherungsabschnitt
US20070186492A1 (en) * 2006-02-15 2007-08-16 Dayton Superior Corporation Lifting fixture for concrete structures
JP2009533580A (ja) 2006-04-19 2009-09-17 ダンリー コンストラクション プロダクツ ピーティーワイ エルティーディー コンクリートスラブ接合用アンカー

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Publication number Publication date
EP2169144A1 (fr) 2010-03-31
ATE531873T1 (de) 2011-11-15

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