EP3640410A1 - Ancre de levage - Google Patents

Ancre de levage Download PDF

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Publication number
EP3640410A1
EP3640410A1 EP19203686.1A EP19203686A EP3640410A1 EP 3640410 A1 EP3640410 A1 EP 3640410A1 EP 19203686 A EP19203686 A EP 19203686A EP 3640410 A1 EP3640410 A1 EP 3640410A1
Authority
EP
European Patent Office
Prior art keywords
transport anchor
legs
pressure rod
slide
wall
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.)
Granted
Application number
EP19203686.1A
Other languages
German (de)
English (en)
Other versions
EP3640410B1 (fr
EP3640410A8 (fr
Inventor
Harald Krüger
Didier Helmstetter
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.)
BS Ingenieure AG
Original Assignee
BS Ingenieure AG
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 BS Ingenieure AG filed Critical BS Ingenieure AG
Publication of EP3640410A1 publication Critical patent/EP3640410A1/fr
Publication of EP3640410A8 publication Critical patent/EP3640410A8/fr
Application granted granted Critical
Publication of EP3640410B1 publication Critical patent/EP3640410B1/fr
Active 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
    • E04G21/145—Means in or on the elements for connecting same to handling apparatus specific for hollow plates
    • 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 reinforced concrete walls with two spaced-apart wall shells with a bracket which has a curved center section for hanging in slings and adjoining on both sides, at least in sections straight and mutually parallel bracket legs, which can be embedded in wall shells.
  • a pressure rod is arranged between the stirrup legs in the area of their upper end at the central section, which is not rigidly connected to the loads to be taken up.
  • Such a transport anchor is out, for example DE 10 2005 009 708 B4 known.
  • the compression rod is made of a resilient material such as wood, plastic or textile fiber concrete.
  • the stirrup legs are each inserted in end-end, groove-shaped recesses in the pressure rod.
  • the stirrup legs are held together in their parallel orientation by a stirrup in the end region of the stirrup legs, which overlaps them in a U-shape.
  • the pressure rod is clamped between them.
  • the object of the invention is to further improve the transport anchors which have proven themselves. This object is achieved by the measures specified in claim 1.
  • the transport anchor comprises a bracket, for example made of steel, which has a curved center section for hanging in slings, for example a crane or a carabiner, and adjoining on both sides, at least sectionally straight and mutually parallel bracket legs for embedding in wall shells.
  • a pressure rod is arranged between the stirrup legs in the area of their upper ends, at the transition to the central section. This pressure rod is not rigidly connected to the two stirrup legs. Since there is no rigid connection to the pressure rod, the stirrup legs can slide along the end faces of the pressure rod if they deform under tension in the area of the pressure rod, in particular under stretch.
  • Such a pressure rod can be made thin in cross-section compared to the wood pressure rod known from the prior art, which correspondingly reduces the absorption of moisture and the resulting moisture bridges to the wall shells.
  • this sliding is facilitated by a sliding shoe.
  • a slide shoe is arranged on at least one end of the pressure rod for the respective stirrup leg.
  • the slide shoe comprises a bottom wall and two side walls and an end wall.
  • the pressure rod is encircled in the longitudinal direction by a bottom wall and two side walls by the sliding block and on the end face by its end wall.
  • the front wall of the The sliding shoe is designed as a sliding surface for the respective stirrup leg.
  • the side walls of the slide shoe extend beyond the end of the pressure rod and serve there as side guides for the respective stirrup leg in its longitudinal direction.
  • the compression rod is preferably made of steel as a solid rod (solid rod). Such a rod does not represent a moisture bridge between the wall shells.
  • the rod can, for example, have a round or alternatively also an angular cross section.
  • a rod can also be used which represents a hollow body with a round or angular cross section.
  • the bottom wall merges into the end wall with a rounded edge, thereby preventing the end wall from notching into the stirrup leg under load.
  • the side walls of the sliding block encompass the pressure rod in its longitudinal direction, preferably in a form-fitting manner by means of first edge sections bent against one another.
  • the side wall of the sliding shoe engages in a form-fitting manner in the longitudinal direction of the respective bracket leg, preferably by means of second edge sections bent against one another.
  • the end wall of the sliding block which is designed as a sliding surface, or a side of the sliding block facing the pressure rod or the respective stirrup leg is provided with a layer or coating of a material that is more slidable for the respective stirrup leg than the material of the sliding block. In this way, the sliding of the stirrup leg along the end face of the sliding shoe is improved.
  • the stirrup leg is connected to the sliding shoe by means of spot welding. This welded connection is made before the installation of the transport anchor in the two wall shells and ensures the cohesion of the parts and the position of the pressure rod. This connection can be released under the forces occurring during the transport of double-shell walls.
  • the slide shoe is made at least partially from stamping and bending from a flat material such as a steel sheet. This process is simple and cost effective.
  • the sliding block is at least partially made of cast steel.
  • the slide shoe is designed as a sleeve, for example made of steel.
  • the sleeve engages positively in the longitudinal direction of the pressure rod.
  • the side walls, the bottom walls and the end wall are formed by the sleeve.
  • the sleeve therefore has a total of four slots at one of its two ends, which form four edge sections. Two of the four edge sections encompass the respective stirrup leg in its longitudinal direction. The remaining two edge sections are curved and at least one of these two edge sections forms the end wall.
  • the bracket of the transport anchor according to the invention is preferably made of smooth steel or a steel cable, in particular with a round cross section.
  • smooth steel is that the bracket legs in the wall shells of the reinforced concrete wall are sufficiently movable in the longitudinal direction in their upper region. When the tensile force is applied to the middle section, they stretch out and become thinner. Because they can slide along the pressure rod, it is not subjected to heavy loads except for transverse pressure and remains in its position. An undesired chipping of the concrete is prevented.
  • An advantage of the steel cable is that the middle section is longer than when using a rigid bracket can be designed so that it protrudes above the double shell wall in particular. He can also better adapt to the respective pull angle when applying pulling forces.
  • the compression rod is made of inexpensive concrete rib steel, preferably with a round cross section.
  • a slide shoe is provided on both ends of the pressure rod.
  • a cross connection is provided between the stirrup legs in the region of their lower free ends, which holds the two stirrup legs at a mutual distance, so that a clamping pressure is generated on the pressure rod.
  • the transport anchor according to the invention comprises an additional longitudinal anchoring of the stirrup legs in the wall shells.
  • This additional anchoring and the aforementioned cross-connection of the stirrup legs is realized in one embodiment of the invention by a rod, preferably made of steel, which is welded to the stirrup legs in the region of their lower free ends, preferably projecting transversely.
  • a concrete ribbed bar As additional longitudinal anchoring of the stirrup legs in the wall shells is welded to their lower free ends, preferably extending them and preferably overlapping, a concrete ribbed bar. These bars can be relatively thin because their rib structure favors fixation in the concrete wall shell.
  • a cross connection between the two bracket legs can hereby be produced with a rod which is welded with its end faces to the stirrup legs. Since this rod does not have to contribute anything to the longitudinal anchoring of the stirrup legs, it does not have to protrude beyond it.
  • a U-shaped concrete ribbed rod is provided as an additional longitudinal anchoring of the stirrup legs and preferably at the same time also for forming a cross connection.
  • This u-shaped concrete ribbed bar is welded with its u-legs to the free ends of the stirrup legs, preferably extending them and preferably overlapping them.
  • the U-shaped bent ribbed concrete rod is further preferably welded to the free ends of the stirrup legs in such a way that its U-legs are directed upwards and its bent sections come to rest at the bottom. Because there are practically no tractive forces left that could cause concrete flaking in the area where the bent sections emerge from the wall shells. The tensile forces can already be effectively introduced into the concrete of the wall shells by the u-legs arranged above.
  • the sliding shoe is designed as an at least two-part sliding bearing.
  • This comprises a hook element with an attached slide rail and a slide bearing bush which completely or partially surrounds the slide rail and the pressure rod.
  • the hook element is typically designed to grip around the respective stirrup leg, preferably by means of a snap or clamp connection.
  • the scheduled The slide rail of the hook element serves to reduce the sliding friction, so that tilting between the slide bearing bush, in particular burrs at the edges of the slide bearing bush and the pressure rod or the respective stirrup leg is significantly reduced.
  • it is not necessary to reduce the roughness of the surface, in particular the surface quality of the side walls, by grinding, so that the manufacture of the sliding block is more efficient.
  • the hook element allows the pressure rod and the slide shoe to be easily attached to the respective stirrup leg, which makes assembly easier.
  • the end wall of the slide shoe can be formed by the hook element and the side walls by the slide bearing bush.
  • the hook element with the slide rail attached has a more slidable material than the material of the slide bearing bush or consists of a material that is slidier than the material of the slide bearing bush.
  • the plain bearing bush typically consists of metal, in particular steel.
  • the material of the hook element is softer than the material of the slide bearing bush and / or the pressure rod.
  • the more slidable material of the hook member is a polymer material, such as polyethylene or polypropylene.
  • FIG. 1 an embodiment of the transport anchor 1 according to the invention is shown in a view from the front under a .
  • This comprises a bracket 2 with a central section 21 and two bracket legs 22A and 22B.
  • the middle section 21 is set up for this purpose sling means, for example a crane hook (in Fig. 1 not visible).
  • the two mutually parallel bracket legs 22A and 22B are fixed in two mutually spaced wall shells (in Fig. 1 these wall shells are not shown).
  • the two stirrup legs 22A and 22B adjoin the central section 21 and, in the present embodiment, are straight.
  • a pressure rod 3 runs between the two arm legs 22A and 22B at their upper end at the transition to the central section 21.
  • the ends of the pressure rod 3 are embedded in the wall shells, but are not rigidly connected to the arm legs 22A, 22B. The latter is important so that the two stirrup legs 22A, 22B can slide along the compression rod 3 under tension (tensile force Z).
  • a slide shoe 4A, 4B for the respective stirrup leg 22A, 22B is arranged on at least one end of the pressure rod 3, which slide rod 3 has a bottom wall 41A, 41B and two side walls 42A and 42B in the longitudinal direction thereof, and one on the end face End wall 43A, 43B encompasses.
  • the two end walls 43A, 43B form a sliding surface F for the two bracket legs 22A, 22B.
  • the two side walls 42A, 42B of the sliding shoe have first edge sections 421, 422 which are bent against one another and which engage positively in the longitudinal direction of the pressure rod 3. Furthermore, these also have second edge sections 423, 424 which are bent relative to one another and which positively engage around the respective stirrup legs 22A, 22B in the longitudinal direction thereof.
  • a transverse connection is provided between the stirrup legs 22A, 22B in the region of their lower free ends, which holds the two stirrup legs at a mutual distance, so that a clamping pressure is generated on the pressure rod 3.
  • the embodiment shown is a rod 6, which is preferably made of steel and is welded to the bracket legs 22A, 22B in the region of their lower free ends. By the rod 6 projecting somewhat beyond the stirrup legs 22A, 22B (while still leaving sufficient concrete cover), in addition to a cross connection there is also an additional longitudinal anchoring of the stirrup legs 22A, 22B in the wall shells.
  • a side view of the transport anchor 1 is shown under b.) . Visible in this view is the central section 21 and the bracket leg 22A of the bracket 2. Also shown is one of the two sliding shoes 4A and the side wall 42A, which positively engages around the bracket leg 22A in the longitudinal direction thereof by means of second edge sections 423 which are bent relative to one another.
  • Fig. 2 shows under a.) a second embodiment of the transport anchor 1 according to the invention in a view from the front.
  • the difference from the first embodiment lies in the transverse connection of the two bracket legs 22A and 22B and in their additional longitudinal anchoring in the wall shells.
  • a straight rod 6 ' in the area of the lower free ends of the stirrup legs, a straight rod 6 'runs transversely to them, but does not protrude above the two stirrup legs.
  • This rod 6 ' is made thinner than the pressure rod 3 and is not necessarily made of steel.
  • a concrete rib bar 6A, 6B is welded onto their lower free ends, which extend and overlap them.
  • Fig. 2 shows under b.) in a side view of the transport anchor 1 according to the invention the extension of the bracket leg 22A by the rod 6A. Furthermore, the overlap of the stirrup leg 22A by the rod 6A is clearly visible.
  • Fig. 3 shows under a.) a third embodiment of the transport anchor 1 according to the invention in a view from the front.
  • the difference to the first and the second embodiment lies in the transverse connection of the two bracket legs 22A, 22B and in their additional longitudinal anchoring in the wall shells.
  • a U-shaped concrete rib bar 7 with legs 71, 72 is provided for this purpose.
  • This concrete rib bar 7 is welded with its legs 71, 72 to the free ends of the bracket legs 22A, 22B, which extend and overlap them.
  • Fig. 3 shows under b.) a side view of the third embodiment of the transport anchor 1 according to the invention.
  • the extension of the stirrup leg 22A with the leg 72 of the U-shaped bent concrete bar 7 and the overlap in the region of the lower free end of the stirrup leg 22A is visible.
  • Fig. 4 shows under a.) a fourth embodiment of the transport anchor 1 according to the invention in a view from the front.
  • the U-shaped concrete rib bar 7 is welded with its legs pointing upwards to the free ends of the bracket legs 22A, 22B.
  • Fig. 4 shows under b.) a side view of the fourth embodiment of the transport anchor 1 according to the invention.
  • the extension of the stirrup leg 22A with the leg 72 of the U-shaped bent concrete rod 7 and the overlap in the region of the lower free end of the stirrup leg 22A is visible.
  • Fig. 5 shows the fourth embodiment of the transport anchor 1 according to the invention embedded in a first and a second wall shell S1, S2 of a reinforced concrete double wall.
  • Fig. 6 shows under a.) a section of a bracket leg 22A and a sliding shoe 4A and a section of the pressure rod 3 in a view from the front.
  • the side walls 42A of the sliding block 4A extend beyond the end of the pressure rod 3. she serve as side guides for the stirrup leg 22A in its longitudinal direction.
  • the side wall 42A has a second bendable edge section 423 which engages around the bracket leg 22A in a form-fitting manner in the longitudinal direction thereof.
  • the end wall 43A (in Fig. 6 visible under b.)) forms a sliding surface F with respect to the bracket leg 22A.
  • the bottom wall 41A merges with a rounded edge into the end wall.
  • Fig. 6 shows under b.) a perspective view of a sliding block 4A with a bottom wall 41A, two side walls 42A with a second edge section 423 for positive connection with a bracket leg and an end wall 43A. Furthermore, the first edge sections 421 are also visible, which, in a bent form, encompass the pressure rod 3 in the longitudinal direction (not visible in this figure).
  • the slide shoe shown is preferably made by punching and bending from a flat material, in particular a steel sheet.
  • Fig. 7 shows under a) a perspective view of a transport anchor 1 with two slide shoes 4A and 4B, which are each designed as two-part slide bearings.
  • the slide bearings have a hook element 44 with an attached slide rail 441 and a slide bearing bush 45 which at least partially surrounds the slide rail 441 and the pressure rod 3.
  • the plain bearing bush 45 forms two side walls 42A and 42B.
  • Fig. 7 shows under b) a perspective view of the transport anchor Fig. 7a .
  • the plain bearing bush is not shown for a better overview.
  • the slide rail 441 of the hook element 44 forms an additional slide surface 442 between the pressure rod 3 and the slide bearing bush 45, whereby the sliding friction is reduced.
  • this has a latching lug 442, via which the slide bearing bush can be pushed in the direction of the stirrup leg 22A or 22B and which is designed to prevent the slide bearing bush from sliding again in the opposite direction.
  • the assembly can comprise the following steps: the slide bearing bush 45 is pushed onto the pressure rod 3, then the hook element 44 is pushed onto the pressure rod 3 and then the pressure rod 3 is fastened to the bracket leg 22A by means of hook element 44, preferably by clamping.
  • the plain bearing bush is then pushed over latch 442 and slide rail 442.
  • Fig. 8 shows under a) a hook element 44 with slide rail 441.
  • the hook element 44 also forms the end wall 43A.
  • Fig. 8 shows under b) a plain bearing bush 45 with side wall 42A and bottom wall 41.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Joining Of Building Structures In Genera (AREA)
EP19203686.1A 2018-10-18 2019-10-16 Ancre de levage Active EP3640410B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH01270/18A CH715485A2 (de) 2018-10-18 2018-10-18 Transportanker.

Publications (3)

Publication Number Publication Date
EP3640410A1 true EP3640410A1 (fr) 2020-04-22
EP3640410A8 EP3640410A8 (fr) 2020-07-01
EP3640410B1 EP3640410B1 (fr) 2021-12-08

Family

ID=68281235

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19203686.1A Active EP3640410B1 (fr) 2018-10-18 2019-10-16 Ancre de levage

Country Status (2)

Country Link
EP (1) EP3640410B1 (fr)
CH (1) CH715485A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111877762A (zh) * 2020-07-01 2020-11-03 上海建工集团股份有限公司 一种可移动预制混凝土墙板自动安装工装系统
FR3112566A1 (fr) * 2020-07-16 2022-01-21 Josselin Guicherd Organe de levage pour le levage d’un prémur.
EP3964674A1 (fr) * 2020-09-08 2022-03-09 Aleksander Szulc Ancrage de transport pour murs creux

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019102065A1 (de) * 2019-01-28 2020-07-30 Econac Bvba Transportanker mit Faserkunststoffverbundmaterial-Druckelement

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29706644U1 (de) 1997-04-14 1997-08-14 Bauersfeld, Fred, Dipl.-Ing., 39240 Calbe Betonanker für Stahlbeton-Konstruktionen
DE10038249A1 (de) 1999-08-12 2001-04-05 Syspro Gruppe Betonbauteile E Transportanker für sogenannte Doppelwände
DE102005009708B4 (de) 2005-03-03 2009-08-13 Pape, Heinz, Dr.-Ing Transportanker für vorgefertigte Stahlbetonelemente
DE102011055142A1 (de) * 2011-02-09 2012-08-09 Bs Ingenieure Ag Doppelwand und Transportanker für eine Doppelwand
DE202014103774U1 (de) * 2014-08-14 2015-11-17 Philipp Gmbh Hohlwandanker
EP3029220A1 (fr) * 2014-12-02 2016-06-08 Ikona AG Système à ancrage de transport de doubles parois préfabriquées béton/acier

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29706644U1 (de) 1997-04-14 1997-08-14 Bauersfeld, Fred, Dipl.-Ing., 39240 Calbe Betonanker für Stahlbeton-Konstruktionen
DE10038249A1 (de) 1999-08-12 2001-04-05 Syspro Gruppe Betonbauteile E Transportanker für sogenannte Doppelwände
DE102005009708B4 (de) 2005-03-03 2009-08-13 Pape, Heinz, Dr.-Ing Transportanker für vorgefertigte Stahlbetonelemente
DE102011055142A1 (de) * 2011-02-09 2012-08-09 Bs Ingenieure Ag Doppelwand und Transportanker für eine Doppelwand
DE202014103774U1 (de) * 2014-08-14 2015-11-17 Philipp Gmbh Hohlwandanker
EP3029220A1 (fr) * 2014-12-02 2016-06-08 Ikona AG Système à ancrage de transport de doubles parois préfabriquées béton/acier

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111877762A (zh) * 2020-07-01 2020-11-03 上海建工集团股份有限公司 一种可移动预制混凝土墙板自动安装工装系统
FR3112566A1 (fr) * 2020-07-16 2022-01-21 Josselin Guicherd Organe de levage pour le levage d’un prémur.
EP3964674A1 (fr) * 2020-09-08 2022-03-09 Aleksander Szulc Ancrage de transport pour murs creux

Also Published As

Publication number Publication date
EP3640410B1 (fr) 2021-12-08
CH715485A2 (de) 2020-04-30
EP3640410A8 (fr) 2020-07-01

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