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EP0262401A1 - Holding device for an anchor bolt during the concreting of a precast concrete unit - Google Patents

Holding device for an anchor bolt during the concreting of a precast concrete unit Download PDF

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Publication number
EP0262401A1
EP0262401A1 EP87112460A EP87112460A EP0262401A1 EP 0262401 A1 EP0262401 A1 EP 0262401A1 EP 87112460 A EP87112460 A EP 87112460A EP 87112460 A EP87112460 A EP 87112460A EP 0262401 A1 EP0262401 A1 EP 0262401A1
Authority
EP
European Patent Office
Prior art keywords
shaped body
lifting
lifting part
body according
recess
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
EP87112460A
Other languages
German (de)
French (fr)
Other versions
EP0262401B1 (en
Inventor
Siegfried Fricker
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
Unistrut Europe PLC
Original Assignee
Unistrut Europe PLC
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Filing date
Publication date
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Publication of EP0262401A1 publication Critical patent/EP0262401A1/en
Application granted granted Critical
Publication of EP0262401B1 publication Critical patent/EP0262401B1/en
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    • 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
    • E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B28B23/005—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects with anchoring or fastening elements for the shaped articles
    • 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
    • E04G15/00—Forms or shutterings for making openings, cavities, slits, or channels
    • E04G15/04—Cores for anchor holes or the like around anchors embedded in the concrete

Definitions

  • the invention relates to a molded body with the features of the preamble of claim 1.
  • blind holes are formed in the molded body material on the head side, which are open on the upper or lifting side facing away from the precast concrete part. After the concrete has hardened, two round rods can be inserted into these blind holes, by means of which the shaped bodies can be subsequently removed from the precast concrete element by scissors-like compression.
  • the blind holes fill up with concrete, so that the round bars cannot be inserted and thus subsequent removal of the molded body is not possible.
  • Another The disadvantage is that for the subsequent levering out of the shaped body from the precast concrete part, such round bars must always be available or procured that fit into the blind holes in the shaped body.
  • the object of the invention is to develop a molded body with the features of the preamble of claim 1 to the effect that absolutely reliable extraction from the prefabricated concrete part can be achieved with simple means without special lever bars.
  • the molded body 1 according to the invention can be cast with an anchor 2 into a prefabricated concrete part (not shown here) produced with the help of a removed formwork 3. It can be seen that the formwork 3 is penetrated by a wing nut 4, the mounting screw 5 and that under the formwork 3 there is a holding plate 6, which in a formed on the upper lifting side 7 rectangular recess 8 of the molded body 1 so it can be used that a largely flat conclusion is given. On the underside of the holding plate 6 there are two cylindrical pins 9 which can be inserted into two bores 10 of the molded body 1.
  • the molded body 1 has, as shown in FIG. 6 two mold core parts 11, 12 which have high material stability and can preferably be made of polyamide, as a result of which the molded body 1 is given a high degree of inherent rigidity.
  • the core parts 11, 12 are surrounded by a jacket 13, which consists of a flexible material and can preferably be made of an elastic polyurethane, which is resistant to chemical-physical effects on the part of the concrete or the formwork material (formwork oil or the like) and mechanical loads largely resists when inserting the anchor 2 and removing the molded body 1 from the Bet on precast.
  • the flexible jacket 13 is designed so that there is a film hinge-like predetermined bending point 14 in the center region at the base of the recess 8, so that the two sides of the molded body 1 with the two core parts 11, 12 can be bent somewhat upward about the axis of the predetermined bending point 14 and the lugs 16, 17 of the core parts 11, 12 engaging in an opening of the armature head 15 disengage and release the armature 2.
  • the holes 10 used to fasten the molded body 1 to the formwork 3 are spaced to the left and right of the predetermined bending point 14.
  • the bore 10 shown on the left in the drawing (FIG. 6) has a metal plate 18 in the lower region, which can have such shapes that a bayonet-type pin lock is possible.
  • a threaded nut 19 is held, into which a pin thread can be screwed so that the molded body 1 can be pulled with its upper end face or lifting side 7 against the inside of the formwork 3.
  • the molded body 1 has at least one lifting part 20.
  • the lifting part 20 can preferably be a wire rope or a cord, it being advantageous to form the rope as a loop or loop, so that an insertion opening 21 is formed, into which an auxiliary tool, preferably a so-called mason hammer, which the concrete workers at the daily work as a common tool is always available, can be inserted to pry out the molded body 1 from the precast concrete.
  • the lifting part 20 for example from a sheet of metal, as a flat rectangular tab, for example a hinge, and to provide this with a hole into which the auxiliary tool or mason hammer can be inserted.
  • the loop-shaped lifting part 20 designed as a rope can preferably consist of metal wires or a highly tear-resistant plastic cord.
  • the ends of the wire rope-shaped raised body 20 can be combined by means of a crimp sleeve 23 and fixed with this in the molded body 1.
  • the ends of the cable loop-shaped lifting part 20 are combined on a threaded bolt 24, via which a firm anchoring in the molded body 1 can also be achieved.
  • the lifting part 20 can expediently be positioned on the shaped body 1 in such a way that it is located within the shell-shaped recess 8 on the upper head side or lifting side 7. It may be advantageous to measure the total length or the sum of the length of the lifting loops 20 so that it is not greater than the length of the recess 8. This ensures that the lifting parts 20 are open each case can be completely accommodated by the recess 8 and are stored sunk in this. For this purpose, it may be advantageous to arrange the lifting slings 20 so that they are embedded somewhat obliquely in the molded body 1, in such a way that the two lifting parts are slightly inclined towards one another, so that an inwardly inclined inclination toward the center of the molded body is predetermined is. This ensures that the lifting loops 20 are automatically folded inwards against the formwork 3 when the molded body 1 is screwed on and bend into the recess 8 by itself or in a positively driven manner.
  • the two lifting parts 20 are fastened in one of the two mold core parts 11, 12, whereby they can expediently be cast in the plastic material of the mold core parts 11, 12, so that there is a positive anchoring. It can be seen that the lifting loops 20 are at an even greater distance from one another than the two bores 10 of the molded body 1.
  • the loop-shaped lifting parts 20 are thus anchored with their crimp sleeves 23 to the left or right next to the bores 10 in the molded core parts 11, 12, so that for a smooth levering out of the molded body 1 from the prefabricated concrete part there are relatively large lever arms from the lifting parts 20 to the predetermined bending point 14 located in the center of the distance.
  • FIG. 2 and 6 show that the lifting parts 20 are erected and the upper lifting side 7 protrude outwards.
  • a mason hammer or the like can be inserted into the insertion openings 21 to lift out the molded body 1.
  • the cable loop-shaped lifting parts 20 are bent inwards and are thus completely recessed in the recess 8.
  • the only wire-shaped lifting part 20 is arranged in an arc shape in the region of the recess 8, so that a bracket is practically formed, which spans the predetermined bending point 14 and the two bores 10 of the molded body 1.
  • one end 25 of the rope-shaped lifting bracket 20 is firmly cast in one (left) mold core part 11 and the other end 26 in the other (right) mold core part 12 of the molded body 1.
  • the ends 25, 26 can be bent into hooks 22 similar to those shown in FIG. 3 shown.
  • the arch-shaped lifting part 20 can also be bent so that it is located within the recess 8.
  • This embodiment has the advantage that only an auxiliary tool, such as a mason hammer, is to be placed in the middle of the rope-shaped lifting part 20 and only has to be pulled vertically upwards in one direction to lever out the molded body 1, the molded body 1 being centered around the predetermined bending point 14 can tilt up slightly and can thus be lifted out of the precast concrete more easily. Also will achieved a uniform distribution of the lifting forces on the two sides of the molded body 1 in this embodiment.
  • an auxiliary tool such as a mason hammer
  • the advantage is achieved that, when the shaped body 1 is installed over a wide area and the concrete is subsequently pulled off or smoothed by the resilient restoring forces of the wire loops 20, the shaped body 1 is easily found again and again even if it should have sunk a bit into the concrete.
  • the surface of the molded body 1 is covered with a thin concrete layer of about 2 to 5 mm, so that the lifting side 7 of the molded body 1 is no longer visible.
  • the preferably wire-loop-shaped lifting parts 20 also offer the advantage that later, after the concrete has hardened when levering out the molded part 1, the mason hammer, which is always readily available to the concrete worker, can be used as a hook by using the tip of the Mason hammer guided through the loop and the molded body 1 can be lifted by pulling obliquely upwards.
  • the rope-loop-shaped lifting parts 20 easily turn when screwing the molded body 1 and immerse it in the recess 8 of the molded body 1. After the molded body 1 has been removed from the formwork 3, the wire loops can spring back and are thus immediately ready for use again.
  • a major advantage is that no drilling holes can run anymore and that the lifting slings 20 can be hooked into the lifting slings 20 at any time using simple auxiliary tools that are always present in the construction and the molded body 1 can be pulled out without problems.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

Abstract

Die Vorrichtung (1) ist zur Halterung eines Ankers (2) an einer Schaltung für einen Betonfertigteil zur Ausformung einer Aussparung in dem Betonfertigteil vorgesehen. Beim Herausnehmen der Vorrichtung (1) aus dem Betonfertigteil wird die Vorrichtung (1) vom Ankerkopf (15) abgezogen, so daß der Ankerkopf (15) freiliegt. Die Vorrichtung (1) ist für ein leichtes Herausziehen aus dem Betonfertigteil mit mindestens einem, bevorzugt seilschlaufenförmigen Aushebeteil (20) versehen. Der Aushebeteil (20) ist umbiegbar, bzw. zum Herausziehen der Vorrichtung (1) nach außen aufrichtbar.The device (1) is provided for holding an anchor (2) on a circuit for a precast concrete element to form a recess in the precast concrete element. When the device (1) is removed from the precast concrete element, the device (1) is pulled off the anchor head (15) so that the anchor head (15) is exposed. The device (1) is provided with at least one, preferably rope loop-shaped, lifting part (20) for easy removal from the precast concrete part. The lifting part (20) can be bent or erected outwards to pull out the device (1).

Description

Die Erfindung betrifft einen Formkörper mit den Merkmalen des Oberbegriffs des Anspruchs 1.The invention relates to a molded body with the features of the preamble of claim 1.

Bei einem bekannten Formkörper dieser Art (DE-PS 3037596) sind im Formkörpermaterial kopfseitig Sacklochbohrungen ausgebildet, die an der dem Betonfertigteil abgewandten Ober- bzw. Aushebeseite offen sind. In diese Sacklochbohrungen können nach dem Abhärten des Betons zwei Rundstäbe eingesteckt werden, mittels denen durch scherenartiges Zusammendrücken der Formkörper nachträglich aus dem Betonfertigteil entfernt werden kann. Beim Einbau bzw. Herstellen des Betonfertigteils kann es vorkommen, daß die Sacklochbohrungen mit Beton volllaufen, so daß die Rundstäbe nicht eingesteckt werden können und somit ein nachträgliches Herausheben des Formkörpers nicht möglich ist. Ein weiterer Nachteil besteht darin, daß zum nachträglichen Aushebeln des Formkörpers aus dem Betonfertigteil stets solche Rundstäbe bereitzuhalten oder zu beschaffen sind, die in die Sacklochbohrungen des Formkörpers hineinpassen.In a known shaped body of this type (DE-PS 3037596), blind holes are formed in the molded body material on the head side, which are open on the upper or lifting side facing away from the precast concrete part. After the concrete has hardened, two round rods can be inserted into these blind holes, by means of which the shaped bodies can be subsequently removed from the precast concrete element by scissors-like compression. When installing or manufacturing the prefabricated concrete part, it can happen that the blind holes fill up with concrete, so that the round bars cannot be inserted and thus subsequent removal of the molded body is not possible. Another The disadvantage is that for the subsequent levering out of the shaped body from the precast concrete part, such round bars must always be available or procured that fit into the blind holes in the shaped body.

Die Aufgabe der Erfindung besteht darin, einen Formkörper mit den Merkmalen des Oberbegriffs des Anspruchs 1 dahingehend weiterzubilden, daß mit einfachen Mitteln ohne spezielle Aushebelstäbe ein absolut zuverlässiges Herausziehen aus dem Betonfertigteil erzielt werden kann.The object of the invention is to develop a molded body with the features of the preamble of claim 1 to the effect that absolutely reliable extraction from the prefabricated concrete part can be achieved with simple means without special lever bars.

Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst.This object is achieved by the characterizing features of claim 1.

Bevorzugte Ausgestaltungen und Weiterbildungen sowie weitere Vorteile und wesentliche Einzelheiten der Erfindung sind den Merkmalen der Unteransprüche, der nachfolgenden Beschreibung und der Zeichnung zu entnehmen, die in schematischer Darstellung bevorzugte Ausführungsformen als Beispiel zeigt. Es stellen dar:

  • FIG. 1 einen erfindungsgemäßen Formkörper mit einem Anker und einem Teil einer Verschalung in einer Gesamtansicht,
  • FIG. 2 den Formkörper und den Anker gemäß FIG. 1 in einer etwas größeren Gesamtansicht,
  • FIG. 3 einen hakenförmig ausgeführten Aushebeteil des Formkörpers ähnlich den FIG. 1 und 2,
  • FIG. 4 einen als Schlaufe ausgeführten Aushebeteil gemäß FIG. 1 und 2 mit einer Quetschhülse,
  • FIG. 5 einen ebenfalls als Schlaufe ausgeführten Aushebeteil gemäß FIG. 1 und 2 mit einem Gewindebolzen,
  • FIG. 6 den Formkörper gemäß FIG. 2 im Schnitt gemäß der Linie VI - VI und
  • FIG. 7 den Formkörper mit dem Anker ähnlich der FIG. 2, jedoch mit einem anderen Aushebeteil.
Preferred refinements and developments as well as further advantages and essential details of the invention can be found in the features of the subclaims, the following description and the drawing, which shows preferred embodiments as an example in a schematic representation. They represent:
  • FIG. 1 an overall view of a molded body according to the invention with an anchor and part of a casing,
  • FIG. 2 the molded body and the anchor according to FIG. 1 in a somewhat larger overall view,
  • FIG. 3 is a hook-shaped lifting part of the molded body similar to FIG. 1 and 2,
  • FIG. 4 a lifting part designed as a loop according to FIG. 1 and 2 with a crimp sleeve,
  • FIG. 5 a lifting part also designed as a loop according to FIG. 1 and 2 with a threaded bolt,
  • FIG. 6 the molded body according to FIG. 2 on average along the line VI - VI and
  • FIG. 7 the molded body with the anchor similar to FIG. 2, but with a different lifting part.

Der erfindungsgemäße Formkörper 1 kann mit einem Anker 2 in ein (hier nicht dargestelltes) mit Hilfe einer abgenommenen Schalung 3 hergestelltes Betonfertigteil eingegossen sein. Dabei ist zu erkennen, daß die Schalung 3 von einer Flügelmuttern 4 aufweisenden, der Halterung dienenden Gewindeschraube 5 durchsetzt ist und daß unter der Schalung 3 sich eine Halteplatte 6 befindet, die in eine an der oberen Aushebeseite 7 ausgebildete rechteckförmige Ausnehmung 8 des Formkörpers 1 so einsetzbar ist, daß ein weitgehend planer Abschluß gegeben ist. An der Unterseite der Halteplatte 6 befinden sich zwei zylindrische Zapfen 9, die in zwei Bohrungen 10 des Formkörpers 1 einführbar sind.The molded body 1 according to the invention can be cast with an anchor 2 into a prefabricated concrete part (not shown here) produced with the help of a removed formwork 3. It can be seen that the formwork 3 is penetrated by a wing nut 4, the mounting screw 5 and that under the formwork 3 there is a holding plate 6, which in a formed on the upper lifting side 7 rectangular recess 8 of the molded body 1 so it can be used that a largely flat conclusion is given. On the underside of the holding plate 6 there are two cylindrical pins 9 which can be inserted into two bores 10 of the molded body 1.

Der Formkörper 1 besitzt gemäß der Darstellung in FIG. 6 zwei Formkernteile 11,12, die eine hohe Materialstabilität aufweisen und bevorzugt aus Polyamid hergestellt sein können, wodurch dem Formkörper 1 eine hohe Eigensteifigkeit gegeben ist. Die Kernteile 11,12 sind von einem Mantel 13 umgeben, der aus einem flexiblen Material besteht und bevorzugt aus einem elastischen Polyurethan hergestellt sein kann, das resistent gegen chemisch-physikalische Einwirkungen seitens des Betons oder des Schalungsmaterials (Schalungsöl oder dergleichen) ist und mechanischen Belastungen beim Einlegen des Ankers 2 und Herausnehmen des Formkörpers 1 aus dem Bet onfertigteil weitgehend wiedersteht. Der flexible Mantel 13 ist so ausgeführt, daß im Mittenbereich am Grund der Ausnehmung 8 eine filmscharnierartige Sollbiegestelle 14 besteht, so daß die beiden Seiten des Formkörpers 1 mit den beiden Kernteilen 11,12 um die Achse der Sollbiegestelle 14 etwas nach oben gebogen werden können und die in eine Öffnung des Ankerkopfes 15 eingreifenden Nasen 16,17 der Kernteile 11,12 außer Eingriff gelangen und den Anker 2 freigeben.The molded body 1 has, as shown in FIG. 6 two mold core parts 11, 12 which have high material stability and can preferably be made of polyamide, as a result of which the molded body 1 is given a high degree of inherent rigidity. The core parts 11, 12 are surrounded by a jacket 13, which consists of a flexible material and can preferably be made of an elastic polyurethane, which is resistant to chemical-physical effects on the part of the concrete or the formwork material (formwork oil or the like) and mechanical loads largely resists when inserting the anchor 2 and removing the molded body 1 from the Bet on precast. The flexible jacket 13 is designed so that there is a film hinge-like predetermined bending point 14 in the center region at the base of the recess 8, so that the two sides of the molded body 1 with the two core parts 11, 12 can be bent somewhat upward about the axis of the predetermined bending point 14 and the lugs 16, 17 of the core parts 11, 12 engaging in an opening of the armature head 15 disengage and release the armature 2.

Die der Befestigung des Formkörpers 1 an der Schalung 3 dienenden Bohrungen 10 sind links und rechts neben der Sollbiegestelle 14 auf Abstand zueinander angeordnet. Die in der Zeichnung (FIG. 6) links dargestellte Bohrung 10 weist im unteren Bereich eine Metallplatte 18 auf, die derartige Ausformungen aufweisen kann, daß eine bajonettverschlußartige Zapfenarretierung möglich ist.The holes 10 used to fasten the molded body 1 to the formwork 3 are spaced to the left and right of the predetermined bending point 14. The bore 10 shown on the left in the drawing (FIG. 6) has a metal plate 18 in the lower region, which can have such shapes that a bayonet-type pin lock is possible.

Im unteren Bereich der in der Zeichnung rechts dargestellten anderen Bohrung 10 ist eine Gewindemutter 19 gehalten, in die ein Zapfengewinde eingeschraubt werden kann, so daß der Formkörper 1 mit seiner oberen Stirnseite bzw. Aushebeseite 7 gegen die Innenseite der Schalung 3 gezogen werden kann.In the lower area of the other bore 10 shown on the right in the drawing, a threaded nut 19 is held, into which a pin thread can be screwed so that the molded body 1 can be pulled with its upper end face or lifting side 7 against the inside of the formwork 3.

Den FIG. 1,2,6 und 7 ist zu entnehmen, daß der Formkörper 1 mindestens einen Aushebeteil 20 aufweist. Beim Formkörper 1 der FIG. 1,2 und 6 sind zwei Aushebeteile 20 vorgesehen, während beim Formkörper 1 der FIG. 7 nur ein einziger Aushebeteil 20 angeordnet ist. Der Aushebeteil 20 kann bevorzugt ein Drahtseil oder eine Schnur sein, wobei es vorteilhaft ist, das Seil als Schlinge bzw. Schlaufe zu formen, so daß eine Einstecköffnung 21 gebildet ist, in die ein Hilfswerkzeug, bevorzugt ein sogenannter Maurershammer, der den Betonarbeitern bei der täglichen Arbeit als geläufiges Werkzeug stets griffbereit zur Verfügung steht, zum Aushebeln des Formkörpers 1 aus dem Betonfertigteil eingeführt werden kann. Es kann jedoch auch günstig sein, den Aushebeteil 20 z.B. aus einem Blech als flachrechteckförmige Lasche, z.B. scharnierartig, auszuführen und diese mit einem Loch zu versehen, in das das Hilfswerkzeug bzw. der Maurershammer eingeführt werden kann. Der als Seil ausgeführte schlingenförmige Aushebeteil 20 kann bevorzugt aus Metalldrähten oder aus einer hochreißfesten Kunststoffschnur bestehen. Darüber hinaus kann es auch günstig sein, den Aushebeteil 20 bei der Herstellung des Formkörpers 1 mit dessen Werkstoff gleichzeitig materialeinheitlich einstückig auszuführen.The FIG. 1, 2, 6 and 7 it can be seen that the molded body 1 has at least one lifting part 20. In the molded body 1 of FIG. 1, 2 and 6, two lifting parts 20 are provided, while the molded body 1 of FIG. 7 only a single lifting part 20 is arranged. The lifting part 20 can preferably be a wire rope or a cord, it being advantageous to form the rope as a loop or loop, so that an insertion opening 21 is formed, into which an auxiliary tool, preferably a so-called mason hammer, which the concrete workers at the daily work as a common tool is always available, can be inserted to pry out the molded body 1 from the precast concrete. However, it can also be advantageous to design the lifting part 20, for example from a sheet of metal, as a flat rectangular tab, for example a hinge, and to provide this with a hole into which the auxiliary tool or mason hammer can be inserted. The loop-shaped lifting part 20 designed as a rope can preferably consist of metal wires or a highly tear-resistant plastic cord. In addition, it can also be advantageous to use the lifting part 20 in the manufacture of the molded body 1 with its material at the same time in one piece.

Bei separat hergestellten und am Formkörper 1 festgelegten Aushebeteilen 20 kann es für die Befestigung günstig sein, die Enden des drahtseilförmigen Aushebeteils 20 als Haken 22 umzubiegen (FIG. 3), über die eine zuverlässige Verankerung im Material des Formkörpers 1 erzielt werden kann. Gemäß dem Ausführungsbeispiel der FIG. 4 können die Enden des seilförmigen Aushebeteils 20 mittels einer Quetschhülse 23 zusammengefaßt und mit dieser im Formkörper 1 festgelegt sein. Gemäß dem Ausführungsbeispiel der FIG. 5 sind die Enden des seilschlaufenförmigen Aushebeteils 20 an einem Gewindebolzen 24 zusammengefaßt, über den ebenfalls eine feste Verankerung im Formkörper 1 erzielt werden kann. Es liegt im Rahmen der Erfindung, den Aushebeteil 20 auch mit anders geformten widerhakenähnlichen Befestigungsendteilen im Formkörper 1 absolut ausreißsicher festzulegen, z.B. in der Weise, daß im Formkörper 1 ein Gewinde eingegossen ist, mit welchem ein Gegengewinde des Aushebeteiles 20 eingeschraubt werden kann.In the case of separately produced and fixed to the molded body 1, it may be advantageous for the attachment to bend the ends of the wire rope-shaped raised body 20 as a hook 22 (FIG. 3), by means of which a reliable anchoring in the material of the molded body 1 can be achieved. According to the embodiment of FIG. 4, the ends of the rope-shaped lifting part 20 can be combined by means of a crimp sleeve 23 and fixed with this in the molded body 1. According to the embodiment of FIG. 5, the ends of the cable loop-shaped lifting part 20 are combined on a threaded bolt 24, via which a firm anchoring in the molded body 1 can also be achieved. It is within the scope of the invention to fix the lifting part 20 with differently shaped barb-like fastening end parts in the molded body 1 in an absolutely pull-out manner, e.g. in such a way that a thread is cast into the molded body 1, with which a counter thread of the lifting part 20 can be screwed in.

Der Aushebeteil 20 kann am Formkörper 1 zweckmäßig so positioniert sein, daß er sich innerhalb der schalenförmigen Ausnehmung 8 an der oberen Kopfseite bzw. Aushebeseite 7 befindet. Hierbei kann es günstig sein, die gesamte Länge bzw. die Summe der Länge der Aushebeschlingen 20 so zu bemessen, daß sie nicht größer ist als die Länge der Ausnehmung 8. Dadurch ist sichergestellt, daß die Aushebeteile 20 auf jeden Fall gänzlich von der Ausnehmung 8 aufgenommen werden können und in dieser versenkt gelagert sind. Dazu kann es vorteilhaft sein, die Aushebeschlingen 20 so anzuordnen, daß sie etwas schräg im Formkörper 1 eingebettet sind, und zwar so, daß die beiden Aushebeteile etwas in Richtung zueinanderhin geneigt sind, so daß eine nach innen geneigte Schräglage zur Mitte des Formkörpers hin vorgegeben ist. Damit ist sichergestellt, daß die Aushebeschlingen 20 beim Anschrauben des Formkörpers 1 gegen die Schalung 3 automatisch nach innen umgelegt werden und sich von selbst bzw. zwangsgeführt in die Ausnehmung 8 hineinbiegen.The lifting part 20 can expediently be positioned on the shaped body 1 in such a way that it is located within the shell-shaped recess 8 on the upper head side or lifting side 7. It may be advantageous to measure the total length or the sum of the length of the lifting loops 20 so that it is not greater than the length of the recess 8. This ensures that the lifting parts 20 are open each case can be completely accommodated by the recess 8 and are stored sunk in this. For this purpose, it may be advantageous to arrange the lifting slings 20 so that they are embedded somewhat obliquely in the molded body 1, in such a way that the two lifting parts are slightly inclined towards one another, so that an inwardly inclined inclination toward the center of the molded body is predetermined is. This ensures that the lifting loops 20 are automatically folded inwards against the formwork 3 when the molded body 1 is screwed on and bend into the recess 8 by itself or in a positively driven manner.

Beim Ausführungsbeispiel der FIG. 1,2 und 6 sind die zwei Aushebeteile 20 in je einem der beiden Formkernteile 11,12 befestigt, wobei sie zweckmäßig in dem Kunststoffmaterial der Formkernteile 11,12 eingegossen sein können, so daß eine formschlüssige Verankerung gegeben ist. Dabei ist zu erkennen, daß die Aushebeschlaufen 20 einen noch größeren Abstand zueinander aufweisen als die beiden Bohrungen 10 des Formkörpers 1. Die schlaufenförmigen Aushebeteile 20 sind somit mit ihren Quetschhülsen 23 links bzw. rechts neben den Bohrungen 10 in den Formkernteilen 11,12 verankert, so daß für ein leichtgängiges Aushebeln des Formkörpers 1 aus dem Betonfertigteil verhältnismäßig große Hebelarme von den Aushebeteilen 20 zu der in der Abstandsmitte befindlichen Sollbiegestelle 14 hin bestehen.In the embodiment of FIG. 1, 2 and 6, the two lifting parts 20 are fastened in one of the two mold core parts 11, 12, whereby they can expediently be cast in the plastic material of the mold core parts 11, 12, so that there is a positive anchoring. It can be seen that the lifting loops 20 are at an even greater distance from one another than the two bores 10 of the molded body 1. The loop-shaped lifting parts 20 are thus anchored with their crimp sleeves 23 to the left or right next to the bores 10 in the molded core parts 11, 12, so that for a smooth levering out of the molded body 1 from the prefabricated concrete part there are relatively large lever arms from the lifting parts 20 to the predetermined bending point 14 located in the center of the distance.

Die FIG. 2 und 6 zeigen, daß die Aushebeteile 20 aufgerichtet sind und die obere Aushebeseite 7 nach außen hin überragen. In die Einstecköffnungen 21 kann ein Maurershammer oder dergleichen zum Herausheben des Formkörpers 1 eingeführt werden. In der FIG. 1 sind die seilschlaufenförmigen Aushebeteile 20 nach innen hin umgebogen und befinden sich somit völlig versenkt in der Ausnehmung 8.The FIG. 2 and 6 show that the lifting parts 20 are erected and the upper lifting side 7 protrude outwards. A mason hammer or the like can be inserted into the insertion openings 21 to lift out the molded body 1. In FIG. 1, the cable loop-shaped lifting parts 20 are bent inwards and are thus completely recessed in the recess 8.

Bei dem in der FIG. 7 dargestellten Ausführungsbeispiel ist der einzige drahtförmige Aushebeteil 20 im Bereich der Ausnehmung 8 bogenförmig angeordnet, so daß praktisch ein Bügel gebildet ist, der die Sollbiegestelle 14 und die beiden Bohrungen 10 des Formkörpers 1 überspannt. Hierbei ist das eine Ende 25 des seilförmigen Aushebebügels 20 im einen (linken) Formkernteil 11 und das andere Ende 26 im anderen (rechten) Formkernteil 12 des Formkörpers 1 fest eingegossen. Die Enden 25,26 können dabei zu ähnlichen Haken 22 gebogen sein wie in der FIG. 3 dargestellt. Bei der Montage des Formkörpers 1 kann der drahtbogenförmige Aushebeteil 20 ebenfalls so umgebogen werden, daß er sich innerhalb der Ausnehmung 8 befindet. Diese Ausführung hat den Vorteil, daß nur ein Hilfswerkzeug, wie Maurershammer, in der Mitte des seilbügelförmigen Aushebeteils 20 anzusetzen ist und zum Aushebeln des Formkörpers 1 nur in einer Richtung senkrecht nach oben gezogen werden muß, wobei der Formkörper 1 in der Mitte um die Sollbiegestelle 14 leicht nach oben kippen kann und sich somit leichter aus dem Betonfertigteil herausheben läßt. Auch wird bei dieser Ausführungsform eine gleichmäßige Verteilung der Aushebekräfte auf die beiden Seiten des Formkörpers 1 erzielt.In the in the FIG. 7 embodiment shown, the only wire-shaped lifting part 20 is arranged in an arc shape in the region of the recess 8, so that a bracket is practically formed, which spans the predetermined bending point 14 and the two bores 10 of the molded body 1. Here, one end 25 of the rope-shaped lifting bracket 20 is firmly cast in one (left) mold core part 11 and the other end 26 in the other (right) mold core part 12 of the molded body 1. The ends 25, 26 can be bent into hooks 22 similar to those shown in FIG. 3 shown. When assembling the molded body 1, the arch-shaped lifting part 20 can also be bent so that it is located within the recess 8. This embodiment has the advantage that only an auxiliary tool, such as a mason hammer, is to be placed in the middle of the rope-shaped lifting part 20 and only has to be pulled vertically upwards in one direction to lever out the molded body 1, the molded body 1 being centered around the predetermined bending point 14 can tilt up slightly and can thus be lifted out of the precast concrete more easily. Also will achieved a uniform distribution of the lifting forces on the two sides of the molded body 1 in this embodiment.

Durch die Eigenstabilität bzw. Eigensteifigkeit der vorzugsweise als Draht- oder Kunststoffschlingen ausgeführten Aushebeteile 20 wird der Vorteil erreicht, daß beim flächigen Einbau des Formkörpers 1 sowie nachträglichem Abziehen bzw. Glätten des Betons durch die federnden Rückstellkräfte der Drahtschlingen 20 der Formkörper 1 immer wieder leicht gefunden werden kann, selbst dann, wenn er ein Stück in den Beton abgesackt sein sollte. Beim Abziehen bzw. Glätten der Betonoberfläche wird die Oberfläche des Formkörpers 1 mit einer dünnen Betonschicht von etwa 2 bis 5 mm überzogen, so daß die Aushebeseite 7 des Formkörpers 1 nicht mehr sichtbar ist. Durch die erfindungsgemäßen Aushebeteile 20 ist der Vorteil gegeben, daß die federnden Drahtschlingen sich immer wieder leicht aus dieser abdeckenden Betonschicht aufgrund ihrer Eigenfederwirkung hochbiegen, so daß die Lage des Formkörpers 1 jeweils deutlich erkennbar ist.Due to the inherent stability or inherent rigidity of the excavation parts 20, which are preferably designed as wire or plastic loops, the advantage is achieved that, when the shaped body 1 is installed over a wide area and the concrete is subsequently pulled off or smoothed by the resilient restoring forces of the wire loops 20, the shaped body 1 is easily found again and again even if it should have sunk a bit into the concrete. When removing or smoothing the concrete surface, the surface of the molded body 1 is covered with a thin concrete layer of about 2 to 5 mm, so that the lifting side 7 of the molded body 1 is no longer visible. By the lifting parts 20 according to the invention there is the advantage that the resilient wire loops always bend easily out of this covering concrete layer due to their own spring action, so that the position of the molded body 1 is clearly recognizable in each case.

Die bevorzugt drahtschlingenförmigen Aushebeteile 20 bieten zudem den Vorteil, daß später nach dem Erhärten des Betons beim Heraushebeln de s Formteils 1 einfach der dem Betonarbeiter sowieso ständig griffbereit zur Verfügung stehende Maurershammer als Haken benutzt werden kann, indem die Spitze des Maurershammers durch die Schlinge geführt und der Formkörper 1 durch schräges Ziehen nach oben hin ausgehoben werden kann. Darüber hinaus ist der Vorteil gegeben, daß die seilschlaufenförmigen Aushebeteile 20 beim Anschrauben des Formkörpers 1 sich problemlos umlegen und in die Ausnehmung 8 des Formkörpers 1 eintauchen. Nach dem Entfernen des Formkörpers 1 von der Schalung 3 können die Drahtschlingen zurückfedern und sind somit sofort wieder einsatzbereit. Ein wesentlicher Vorteil besteht darin, daß keinerlei Aushebebohrungen mehr zulaufen können und daß in die Aushebeschlingen 20 jederzeit mit einfachen, am Bau stets vorhandenen Hilfswerkzeugen eingehakt und der Formkörper 1 problemlos herausgezogen werden kann.The preferably wire-loop-shaped lifting parts 20 also offer the advantage that later, after the concrete has hardened when levering out the molded part 1, the mason hammer, which is always readily available to the concrete worker, can be used as a hook by using the tip of the Mason hammer guided through the loop and the molded body 1 can be lifted by pulling obliquely upwards. In addition, there is the advantage that the rope-loop-shaped lifting parts 20 easily turn when screwing the molded body 1 and immerse it in the recess 8 of the molded body 1. After the molded body 1 has been removed from the formwork 3, the wire loops can spring back and are thus immediately ready for use again. A major advantage is that no drilling holes can run anymore and that the lifting slings 20 can be hooked into the lifting slings 20 at any time using simple auxiliary tools that are always present in the construction and the molded body 1 can be pulled out without problems.

Claims (12)

1. Formkörper (1) zur Halterung eines Ankers (2) beim Betonieren eines Betonfertigteils und zur Erzeugung einer seiner Form entsprechenden Aussparung im Betonfertigteil, in die der Ankerkopf (15) ragt, von dem der Formkörper (1) bei der Herausnahme aus der Aussparung abziehbar ist, dadurch gekennzeichnet, daß am Formkörper (1) mindestens ein bis zur oder unter die Ebene der dem Bertonfertigteil abgewandten Aushebeseite (7) umlegbarer Aushebeteil (20) angeordnet ist, der zum Herausziehen des Formkörpers (1) nach außen aufrichtbar ist.1. Shaped body (1) for holding an anchor (2) when concreting a precast concrete element and for producing a recess in the precast concrete element corresponding to its shape, into which the anchor head (15) projects, from which the shaped body (1) when removed from the recess Removable, characterized in that at least one lifting part (20) which can be folded down to or below the level of the lifting side (7) facing away from the finished Berton part is arranged on the shaped body (1) and can be erected outwardly for pulling out the shaped body (1). 2. Formkörper nach Anspruch 1, dadurch gekennzeichnet, daß der Aushebeteil (20) von einem Seil oder einer Schnur gebildet ist.2. Shaped body according to claim 1, characterized in that the lifting part (20) is formed by a rope or a cord. 3. Formkörper nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß der Aushebeteil (20) als eine Einstecköffnung (21) für ein Hilfswerkzeug aufweisende Schlinge oder Schlaufe ausgebildet ist.3. Shaped body according to one of claims 1 or 2, characterized in that the lifting part (20) is designed as an insertion opening (21) for a loop or loop having an auxiliary tool. 4. Formkörper nach Anspruch 1, dadurch gekennzeichnet, daß der Aushebeteil als mit der Einstecköffnung versehene flache Lasche ausgeführt ist.4. Shaped body according to claim 1, characterized in that the lifting part is designed as a flat tab provided with the insertion opening. 5. Formkörper nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der umbiegbare Aushebeteil (20) mit dem Werkstoff des Formkörpers (1) materialeinheitlich einstückig ausgeführt ist.5. Shaped body according to one of claims 1 to 4, characterized in that the bendable lifting part (20) with the material of the shaped body (1) is made in one piece from the same material. 6. Formkörper nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Aushebeteil (20) mittels einer Verankerung (22,23,24), die bevorzugt als Haken, Quetschhülse oder Gewindebolzen ausgeführt ist, im Formkörpermaterial fest eingebettet ist.6. Shaped body according to one of claims 1 to 4, characterized in that the lifting part (20) by means of an anchor (22,23,24), which is preferably designed as a hook, crimp sleeve or threaded bolt, is firmly embedded in the molded body material. 7. Formkörper nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der Aushebeteil (20) im Bereich einer an der Aushebeseite (7) ausgebildeten schalenförmigen Ausnehmung (8) vorgesehen ist.7. Shaped body according to one of claims 1 to 6, characterized in that the lifting part (20) is provided in the region of a bowl-shaped recess (8) formed on the lifting side (7). 8. Formkörper nach Anspruch 7, dadurch gekennzeichnet, daß die Gesamtlänge des Aushebeteils (20) gleich oder kleiner ist als die Länge der Ausnehmung (8) an der Aushebeseite (7).8. Shaped body according to claim 7, characterized in that the total length of the lifting part (20) is equal to or less than the length of the recess (8) on the lifting side (7). 9. Formkörper nach einem der Ansprüche 7 oder 8, dadurch gekennzeichnet, daß der Aushebeteil (20) für eine Sollumbiegung im Bereich der Ausnehmung (8) in einer zur Ausnehmungsebene hin geneigten Schräglage angeordnet ist.9. Shaped body according to one of claims 7 or 8, characterized in that the lifting part (20) for a predetermined bending in the region of the recess (8) is arranged in an inclined position towards the recess plane. 10. Formkörper nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß der Aushebeteil (20) in mindestens einem von zwei Formkernteilen (11,12) verankert ist, die in einem elastischen Mantel (13) angeordnet sind, der oben im Mittenbereich eine Sollbiegestelle (14) aufweist.10. Shaped body according to one of claims 1 to 9, characterized in that the lifting part (20) is anchored in at least one of two mold core parts (11, 12) which are arranged in an elastic jacket (13) which has a top in the central region Has predetermined bending point (14). 11. Formkörper nach Anspruch 10, dadurch gekennzeichnet, daß in jedem der beiden Formkernteile (11,12) je ein Aushebeteil (20) angeordnet ist und die Sollbiegestelle (14) sich im Abstand zwischen den beiden Aushebeteilen (20) befindet.11. Shaped body according to claim 10, characterized in that in each of the two mandrel parts (11, 12) a lifting part (20) is arranged and the predetermined bending point (14) is located at a distance between the two lifting parts (20). 12. Formkörper nach Anspruch 10, dadurch gekennzeichnet, daß dessen Aushebeteil (20) die Sollbiegestelle (14) des Mantels (13) bogenförmig überspannt und mit dem einen Ende (25) in dem einen Formkernteil (11) und dem anderen Ende (26) in dem anderen Formkernteil (12) befestigt ist (FIG. 7).12. Shaped body according to claim 10, characterized in that the lifting part (20) spans the predetermined bending point (14) of the jacket (13) in an arc and with one end (25) in one mold core part (11) and the other end (26) is fastened in the other mold core part (12) (FIG. 7).
EP87112460A 1986-09-02 1987-08-27 Holding device for an anchor bolt during the concreting of a precast concrete unit Expired - Lifetime EP0262401B1 (en)

Applications Claiming Priority (2)

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DE19863629772 DE3629772A1 (en) 1986-09-02 1986-09-02 MOLDED BODY FOR HOLDING AN ANCHOR WHEN CONCRETING A PRECAST CONCRETE PART
DE3629772 1986-09-02

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EP0262401A1 true EP0262401A1 (en) 1988-04-06
EP0262401B1 EP0262401B1 (en) 1990-11-28

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EP87112460A Expired - Lifetime EP0262401B1 (en) 1986-09-02 1987-08-27 Holding device for an anchor bolt during the concreting of a precast concrete unit

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US (1) US4821994A (en)
EP (1) EP0262401B1 (en)
JP (1) JPH07122336B2 (en)
KR (1) KR880004188A (en)
CA (1) CA1291630C (en)
DE (2) DE3629772A1 (en)
DK (1) DK162032C (en)
NO (1) NO873665L (en)

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EP0498742A1 (en) * 1991-02-08 1992-08-12 Etablissements A. Mure Arrangement for provisionally supporting a lifting element on a metallic forming surface during pouring and hardening of a prefabricated concrete element
FR2672648A1 (en) * 1991-02-08 1992-08-14 Mure Ets DEVICE FOR THE PROVISIONAL MAINTENANCE OF A LIFTING MEMBER ON A METAL FORMWORK SURFACE DURING THE CASTING AND CONCRETE PHASE PHASES OF A PREFABRICATED CONCRETE ELEMENT.

Also Published As

Publication number Publication date
NO873665D0 (en) 1987-09-01
DE3766458D1 (en) 1991-01-10
KR880004188A (en) 1988-06-02
DK435487D0 (en) 1987-08-21
JPH07122336B2 (en) 1995-12-25
DK435487A (en) 1988-03-03
DE3629772A1 (en) 1988-03-03
DK162032B (en) 1991-09-09
EP0262401B1 (en) 1990-11-28
DK162032C (en) 1992-02-10
NO873665L (en) 1988-03-03
JPS6370774A (en) 1988-03-30
CA1291630C (en) 1991-11-05
US4821994A (en) 1989-04-18

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