EP0259295A1 - Device for moving and manipulating heavy loads, especially prefabricated concrete elements - Google Patents

Device for moving and manipulating heavy loads, especially prefabricated concrete elements Download PDF

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Publication number
EP0259295A1
EP0259295A1 EP87890174A EP87890174A EP0259295A1 EP 0259295 A1 EP0259295 A1 EP 0259295A1 EP 87890174 A EP87890174 A EP 87890174A EP 87890174 A EP87890174 A EP 87890174A EP 0259295 A1 EP0259295 A1 EP 0259295A1
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EP
European Patent Office
Prior art keywords
anchor bolt
grooves
tie bolt
sickle
connecting head
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
EP87890174A
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German (de)
French (fr)
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EP0259295B1 (en
Inventor
Eric Schuh
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Riss GmbH
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Riss GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/62—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled
    • B66C1/66—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof
    • B66C1/666—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof for connection to anchor inserts embedded in concrete structures
    • 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
    • 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 device for transporting and manipulating heavy loads, in particular precast concrete parts, by means of a lifting device, consisting of an anchor bolt intended for concreting in heavy loads, which is provided with a temporary component in the precast concrete part, preferably made of elastic material, in particular rubber or elastic Plastic, existing recess body is built into the heavy load, and a connector for connecting the anchor bolt to the lifting gear, which engages behind and integrally forms a connecting head formed on the anchor bolt, consisting of a cylindrical part that tapers in the shape of a truncated cone towards the shaft of the anchor bolt and relates to the anchor bolt is pivotally mounted.
  • a lifting device consisting of an anchor bolt intended for concreting in heavy loads, which is provided with a temporary component in the precast concrete part, preferably made of elastic material, in particular rubber or elastic Plastic, existing recess body is built into the heavy load, and a connector for connecting the anchor bolt to the lifting gear, which engages behind and integrally forms a connecting head formed on the anchor bolt, consist
  • the aim of the invention is to achieve a further improvement of this device, in particular with regard to its load absorption or load transmission properties.
  • This is achieved according to the invention in the device specified at the outset by providing at least two diametrically opposed, approximately perpendicular to the bolt axis and parallel to each other crescent-like crescent-shaped grooves in the connecting head of the anchor bolt, in which the connector with its runners can be hung, the bolt axis Closer walls of the sickle-like grooves (groove base) running parallel to the bolt axis are flat.
  • This configuration in particular in the case of an inclined pulling direction, as can be seen e.g. when setting up the precast concrete results, the force transmission into the precast concrete part is secured and the same is prevented from flaking off at the force application points. This will be explained in more detail later.
  • an expedient embodiment of the invention is characterized in that the shank of the anchor bolt has an elliptical cross-section and optionally has a widening on all sides at its end remote from the connector in a manner known per se.
  • the connecting head of the anchor bolt can be provided on the side of the sickle-like grooves facing away from the connecting piece with a transverse hole which runs preferably perpendicularly to the groove base of the sickle-like grooves and is in a manner known per se approximately perpendicular to the bolt axis.
  • a reinforcement bar can be inserted through this hole to better transfer the loads from the anchor bolt to the precast concrete.
  • the recess body which is split in the middle in a known manner and can be opened, has a cavity in its interior which is designed as a negative form of the connecting head of the anchor bolt and in particular is provided with two sickle-like projections penetrating into the sickle-like grooves of the connecting head .
  • FIG. 1 shows an axial section through a device for transporting and manipulating prefabricated concrete parts known from AT-PS 358 788, the connector of which can also be used, for example, in the device according to the invention
  • FIG. 2 shows a view of the object from FIG. 1 from the direction A with the precast concrete part removed and the adjusting lever arm pivoted up to illustrate the connection piece which can also be used in the device according to the invention
  • FIGS. 3 and 4 are views of the anchor bolt according to the present invention from two directions offset by 90 °
  • FIGS. 5 and 6 are two sectional views along mutually perpendicular planes through a recess body according to the present invention
  • FIGS. 7 and 8 two schematic sectional representations along mutually perpendicular planes in order to explain the application of force in the device according to the invention.
  • the device consists of an anchor bolt 3 with a shank 4 and connecting head 5 set up for concreting into the precast concrete part 1 and a spherical connecting piece 6 which can be connected thereto and from which a manipulating arm 7 projects.
  • the connector 6 has an arcuate slot groove 8, the projecting edges or runners 8a (cf. in particular Fig. 2) engage behind the connecting head 5.
  • the slot groove 8 is adapted in cross section to the shape of the connecting head 5 or the crescent-shaped grooves formed therein (cf. FIGS. 3,4 and 7,8).
  • the slot groove 8 has at its end an insertion recess 9 for the connecting head 5.
  • the shaft 4 of the anchor bolt 3 is guided in the slot 10 of the slot groove 8.
  • the connecting piece 6 has a central articulated bore 11 which runs essentially perpendicular to the plane of the slot groove 8 through the center of curvature 12 thereof.
  • a shackle 13 is used for attaching the hoist. This passes through a part of the articulated bore 11.
  • the manipulator arm 7 has nothing to do with the lifting gear striking, rather it functions as an adjustment arm for the insertion recess 9 of the slot groove 8; it is also oriented accordingly and can be pivoted through the towing shackle 13, as indicated by the bow arrow in FIG. 1.
  • the articulated bore 11 has bevels 14, which allow movement of the trailer shackle 13 in the articulated bore 11 without further ado, etc. in different directions.
  • Fig. 3 shows a view of the anchor bolt 3 according to the invention perpendicular to the course of the crescent-shaped grooves 15 formed in the connecting head 5 and Fig. 4 shows a view from a direction rotated by 90 °, i.e. in the direction of the course of the grooves 15.
  • the connecting head 5 consists of a cylindrical part which tapers towards the shaft 4 in the shape of a truncated cone.
  • two horizontal, sickle-like grooves 15 are provided opposite each other with respect to the pin axis 3a, which run approximately perpendicular to the pin axis 3a.
  • the walls (groove base) 15a of the sickle-like grooves 15 running parallel to the pin axis 3a are flat.
  • the connector 6 is suspended with its runners 8a in the sickle-like grooves 15 of the anchor bolt 3.
  • a plate-like connecting head 5a is thus formed above the grooves 15 for forwarding the load from the anchor bolt 3 to the connector 6 and finally to the lifting device, not shown.
  • the connecting head 5 is provided with a transverse hole 16 lying approximately perpendicular to the pin axis 3a, which advantageously runs perpendicular to the groove base 15a of the crescent-like grooves 15.
  • a reinforcing bar 17 (see FIGS. 7 and 8) can be inserted through this transverse hole 16 in order to be able to better transmit the load from the anchor bolt 3 to the precast concrete part 1.
  • the lower bottom of the transverse hole 16 can, like indicated at 16a, to be sloping outwards in order to better adapt to any curvature of the reinforcing bar 17.
  • the lower third of the connecting head 5 consists of the conical transition to the shaft 4, which can optionally be formed with an elliptical cross section.
  • a conventional truncated cone-shaped widening 18 on all sides is used, which also serves as anchoring means in the concrete.
  • Such recess body 19 are firmly attached to the inside of the formwork for the future precast concrete part 1.
  • the formwork is loosened and the recess body 19 is removed from the finished prefabricated concrete part 1, so that a recess corresponding to the negative shape of the recess body 19 is formed on the concrete surface for the purpose of attacking the connector 6 on the head 5 of the anchor bolt 3 (cf. Figs. 1,7,8).
  • the hemisphere is cut along the middle connecting plane perpendicular to the flats 20 (at 22 in FIG. 5), so that the recess body 19 can be opened in order to be able to accommodate the upper part of the head 5 of the anchor bolt 3 in its interior.
  • a cavity 23 is formed, which is designed as a negative shape of the connecting head 5 of the anchor bolt 3, and which in particular has two sickle-like projections 24 penetrating into the sickle-like grooves 15 of the connecting head 5. At least the upper section of the connection head 5 is thus completely surrounded by the recess body 19 (or fills the cavity 23 of the recess body 19).
  • Holes 26, 27 are provided in the base surface 25 of the recess body 19, which are used to fasten the recess body to the formwork or Remove from the precast 1 serve.
  • the anchor bolt 3 is installed in the precast concrete part 1.
  • the anchor bolt 3 is placed with its connecting head 5 in the hinged recess body 19.
  • a corresponding reinforcing bar 17 is inserted through the transverse hole 16 of the anchor bolt 3 (if necessary).
  • the anchor bolt 3 is held firmly and securely in its position so that it cannot shift or shift when concreted in.
  • the recess body 19 is removed from the prefabricated concrete part 1 (for example, by pulling out or levering out by means of the holes 26), as a result of which a recess in the form of a laterally flattened hemisphere for receiving the connecting piece 6 when coupling the precast concrete part 1 to the hoist.
  • the connector 6 will move in the pulling direction until the runners 8a of the connector 6 lock in the grooves 15 of the anchor bolt 3, ie until on the one hand the runners 8a with their outside below Support on the cylindrical middle part of the connection head 5 - see Circle B in FIG. 7 - and on the other hand the runners 8a rest with their inside on the underside of the plate-like connecting head 5a - see circle C in FIG. 7.
  • the vertical force is also at C, but over a somewhat wider area on the underside of the plate-like connecting head 5a via the remaining web between the grooves 15 or their flat groove base walls 15a via the shaft 4 and the widening 18 initiated in the concrete of the prefabricated part 1.
  • the horizontal force component Y H is broken down into a compressive force between the concrete and the connecting piece 6 at D, into a compressive force on the web remaining between the grooves 15 at F and a tensile force in the mentioned web of the anchor bolt 3 at E.
  • the compressive force on the concrete at D is adequately secured with enough concrete in the Y direction.
  • the vertical force component Y V is introduced into the concrete of the precast element 1.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

1. An apparatus for conveying and handling of heavy loads, in particular precast concrete parts, by means of a hoist, consisting of a tie bolt (3) intended for being embedded into the concrete of the heavy load, which tie bolt is inserted together with a recess body (19) only temporarily present in the precast concrete part (1) and preferably consisting of elastic material, in particular rubber or elastic plastics material, and a connecting piece (6) having skids (8a) for connecting the tie bolt (3) with the hoist gripping from behind a connecting head (5) conformed with the tie bolt (3) and consisting of a cylindrical part fustro-conically tapering towards the shaft (4) of the tie bolt (3) and pivotally supported in relation to the tie bolt (3), characterized in that at least two diametrically opposed sickle-like grooves (15) extending approximately perpendicularly to the tie bolt axis (3a) and in parallel to one another are provided in the connecting head (5) of the tie bolt (3), into which grooves (15) the connecting piece (6) with its skids (8a) is hookable, the walls (15a) (groove bottoms) of the sickle-like grooves (15) positioned closer to the tie bolt axis (3a) and extending parallel to the tie bolt axis (3a) being formed plane.

Description

Die Erfindung bezieht sich auf eine Vorrichtung zum Transportieren und Manipulieren von Schwerlasten, insbesondere Betonfertigteilen, mittels eines Hebezeuges, bestehend aus einem zum Einbetonieren in der Schwerlast bestimmten Ankerbolzen, der mit einem nur vorübergehend im Betonfertigteil vorhandenen, vorzugsweis aus elastischem Werkstoff, insbesondere Gummi oder elastischem Kunststoff, bestehenden Aussparungskörper in die Schwerlast eingebaut ist, und einem Anschlußstück zum Verbinden des Ankerbolzens mit dem Hebezeug, das einen am Ankerbolzen angeformten Verbindungskopf, be­stehend aus einem zylinderförmigen Teil, der sich zum Schaft des Anker­bolzens hin kegelstumpfförmig verjüngt, hintergreift und bezug auf den Ankerbolzen schwenkbar gelagert ist. Solche Vorrichtungen sind beispielswei­se aus den AT-PSen 283 691 und 358 788 bekannt und haben sich in der Praxis auch durchaus bewährt.The invention relates to a device for transporting and manipulating heavy loads, in particular precast concrete parts, by means of a lifting device, consisting of an anchor bolt intended for concreting in heavy loads, which is provided with a temporary component in the precast concrete part, preferably made of elastic material, in particular rubber or elastic Plastic, existing recess body is built into the heavy load, and a connector for connecting the anchor bolt to the lifting gear, which engages behind and integrally forms a connecting head formed on the anchor bolt, consisting of a cylindrical part that tapers in the shape of a truncated cone towards the shaft of the anchor bolt and relates to the anchor bolt is pivotally mounted. Such devices are known for example from AT-PSs 283 691 and 358 788 and have also proven their worth in practice.

Ziel der Erfindung ist es, eine weitere Verbesserung dieser Vorrichtung, insbesondere hinsichtlich ihrer Lastaufnahme- bzw. Lastübertragungseigenschaften zu erreichen. Dies wird bei der eingangs näher bezeichneten Vorrichtung erfin­dungsgemäß dadurch erreicht, daß im Verbindungskopf des Ankerbolzens mindestens zwei einander diametral gegenüberliegende, etwa senkrecht zur Bolzenachse und parallel zueinander verlaufende sichelartige Nuten vorgesehen sind, in die das Anschlußstück mit seinen Kufen einhängbar ist, wobei die der Bolzenachse näher liegenden, parallel zur Bolzenachse verlaufenden Wände der sichelartigen Nuten (Nutgrund) eben ausgebildet sind. Durch diese Ausgestaltung wird insbesondere bei schräger Zugrichtung, wie sich dies z.B. beim Aufstellen der Betonfertig­teile ergibt, die Krafteinleitung in den Betonfertigteil gesichert und ein Ab­platzen desselben an den Kraftangriffsstellen vermieden. Dies wird im einzelnen noch später dargelegt.The aim of the invention is to achieve a further improvement of this device, in particular with regard to its load absorption or load transmission properties. This is achieved according to the invention in the device specified at the outset by providing at least two diametrically opposed, approximately perpendicular to the bolt axis and parallel to each other crescent-like crescent-shaped grooves in the connecting head of the anchor bolt, in which the connector with its runners can be hung, the bolt axis Closer walls of the sickle-like grooves (groove base) running parallel to the bolt axis are flat. This configuration, in particular in the case of an inclined pulling direction, as can be seen e.g. when setting up the precast concrete results, the force transmission into the precast concrete part is secured and the same is prevented from flaking off at the force application points. This will be explained in more detail later.

Eine zweckmäßige Ausgestaltung der Erfindung ist dadurch gekennzeichnet, daß der Schaft des Ankerbolzens elliptischen Querschnitt aufweist und gegebenenfalls an seinem dem Anschlußstück fernen Ende in an sich bekannter Weise eine allseitige Verbreiterung aufweist. Dabei kann der Verbindungskopf des Ankerbolzens auf der vom Anschlußstück abgewendeten Seite der sichelartigen Nuten mit einem vorzugsweise senkrecht zum Nutgrund der sichelartigen Nuten verlaufenden in an sich bekannter Weise etwa senkrecht zur Bolzenachse liegenden Querloch versehen sein. Durch dieses Loch kann ein Bewehrungsstab gesteckt werden, um die Lasten besser vom Ankerbolzen auf den Betonfertigteil über­tragen zu können. Weiters ist es zweckmäßig, wenn der in an sich bekannter Weise in der Mitte geteilte und aufklappbare Aussparungskörper in seinem Inneren einen Hohlraum aufweist, der als Negativform des Verbindungskopfes des Ankerbolzens ausgebildet ist und insbesondere mit zwei in die sichel­artigen Nuten des Verbindungskopfes eindringenden sichelartigen Vorsprüngen versehen ist.An expedient embodiment of the invention is characterized in that the shank of the anchor bolt has an elliptical cross-section and optionally has a widening on all sides at its end remote from the connector in a manner known per se. The connecting head of the anchor bolt can be provided on the side of the sickle-like grooves facing away from the connecting piece with a transverse hole which runs preferably perpendicularly to the groove base of the sickle-like grooves and is in a manner known per se approximately perpendicular to the bolt axis. A reinforcement bar can be inserted through this hole to better transfer the loads from the anchor bolt to the precast concrete. Furthermore, it is expedient if the recess body, which is split in the middle in a known manner and can be opened, has a cavity in its interior which is designed as a negative form of the connecting head of the anchor bolt and in particular is provided with two sickle-like projections penetrating into the sickle-like grooves of the connecting head .

Die Erfindung wird nun an Hand eines in den Zeichnungen dargestellten Ausführungsbeispieles näher beschrieben. Es zeigen: Fig. 1 einen Axial­schnitt durch eine aus der AT-PS 358 788 bekannte Vorrichtung zum Transpor­tieren und Manipulieren von Betonfertigteilen, deren Anschlußstück beispiels­weise auch bei der erfindungsgemäßen Vorrichtung anwendbar ist, Fig. 2 eine Ansicht des Gegenstandes der Fig. 1 aus Richtung A bei entferntem Beton­fertigteil und hochgeschwenktem Einstellhebelarm zwecks Veranschaulichung des auch bei der erfindungsgemäßen Vorrichtung anwendbaren Anschlußstückes, die Fig. 3 und 4 jeweils Ansichten des Ankerbolzens gemäß der vorliegenden Erfindung aus zwei um 90° gegeneinander versetzten Richtungen, die Fig. 5 und 6 zwei Schnittansichten längs zueinander senkrecht stehender Ebenen durch einen Aussparungskörper gemäß der vorliegenden Erfindung und die Fig. 7 und 8 zwei schematische Schnittdarstellungen längs zueinander senkrecht stehender Ebenen, um den Kraftangriff bei der erfindungsgemäßen Vorrichtung zu erläutern.The invention will now be described with reference to an embodiment shown in the drawings. 1 shows an axial section through a device for transporting and manipulating prefabricated concrete parts known from AT-PS 358 788, the connector of which can also be used, for example, in the device according to the invention, FIG. 2 shows a view of the object from FIG. 1 from the direction A with the precast concrete part removed and the adjusting lever arm pivoted up to illustrate the connection piece which can also be used in the device according to the invention, FIGS. 3 and 4 are views of the anchor bolt according to the present invention from two directions offset by 90 °, FIGS. 5 and 6 are two sectional views along mutually perpendicular planes through a recess body according to the present invention and FIGS. 7 and 8 two schematic sectional representations along mutually perpendicular planes in order to explain the application of force in the device according to the invention.

Die Fig. 1 und 2 zeigen die aus der AT-PS 358 788 bekannte Vorrichtung und insbesondere das Anschlußstück 2 zum Anhängen eines Betonfertigteils 1 an ein Hebezeug. Die Vorrichtung besteht aus einem zum Einbetonieren in den Betonfertigteil 1 eingerichteten Ankerbolzen 3 mit Schaft 4 und Verbin­dungskopf 5 und einem daran anschließbaren, balligen Anschlußstück 6, von dem ein Manipulierarm 7 vorkragt. Das Anschlußstück 6 weist eine kreisbogen­förmig geführte Schlitznut 8 auf, deren vorstehende Ränder bzw. Kufen 8a (vgl. insbesondere Fig. 2) den Verbindungskopf 5 hintergreifen. Zu diesem Zweck ist die Schlitznut 8 im Querschnitt der Form des Verbindungskopfes 5 bzw. den darin ausgebildeten sichelförmigen Nuten (vgl. Fig. 3,4 und 7,8) angepaßt. Die Schlitznut 8 besitzt an ihrem Ende eine Einführungsausnehmung 9 für den Verbindungskopf 5. Beim bekannten Fall gemäß den Fig. 1 und 2 ist der Schaft 4 des Ankerbolzens 3 in dem Schlitz 10 der Schlitznut 8 ge­führt.1 and 2 show the device known from AT-PS 358 788 and in particular the connector 2 for attaching a prefabricated concrete part 1 to a hoist. The device consists of an anchor bolt 3 with a shank 4 and connecting head 5 set up for concreting into the precast concrete part 1 and a spherical connecting piece 6 which can be connected thereto and from which a manipulating arm 7 projects. The connector 6 has an arcuate slot groove 8, the projecting edges or runners 8a (cf. in particular Fig. 2) engage behind the connecting head 5. For this purpose, the slot groove 8 is adapted in cross section to the shape of the connecting head 5 or the crescent-shaped grooves formed therein (cf. FIGS. 3,4 and 7,8). The slot groove 8 has at its end an insertion recess 9 for the connecting head 5. In the known case according to FIGS. 1 and 2 the shaft 4 of the anchor bolt 3 is guided in the slot 10 of the slot groove 8.

Wie insbesondere aus Fig. 2 hervorgeht, weist das Anschlußstück 6 eine zentrale Gelenkbohrung 11 auf, die im wesentlichen senkrecht zur Ebene der Schlitznut 8 durch deren Krümmungsmittelpunkt 12 verläuft. In der Gelenkbohrung 11 ist ein Anhängeschäkel 13 für das Anschlagen des Hebe­zeuges eingesetzt. Dieser durchfaßt mit einem Teilstück die Gelenkbohrung 11. Der Manipulierarm 7 hat also mit dem Anschlagen des Hebezeuges nichts zu tun, er funktioniert vielmehr als Einstellarm für die Einführungsausnehmung 9 der Schlitznut 8; er ist auch entsprechend orientiert und durch den Anhänge­schäkel 13 hindurch schwenkbar, wie es der Bogenpfeil in Fig. 1 andeutet. Die Gelenkbohrung 11 weist Anschrägungen 14 auf, die ohne weiteres eine Be­wegung des Anhängeschäkels 13 in der Gelenkbohrung 11 ermöglichen, u.zw. nach verschiedenen Richtungen hin.As can be seen in particular from FIG. 2, the connecting piece 6 has a central articulated bore 11 which runs essentially perpendicular to the plane of the slot groove 8 through the center of curvature 12 thereof. In the articulated bore 11, a shackle 13 is used for attaching the hoist. This passes through a part of the articulated bore 11. The manipulator arm 7 has nothing to do with the lifting gear striking, rather it functions as an adjustment arm for the insertion recess 9 of the slot groove 8; it is also oriented accordingly and can be pivoted through the towing shackle 13, as indicated by the bow arrow in FIG. 1. The articulated bore 11 has bevels 14, which allow movement of the trailer shackle 13 in the articulated bore 11 without further ado, etc. in different directions.

Die Fig. 3 zeigt eine Ansicht des erfindungsgemäßen Ankerbolzens 3 senkrecht zum Verlauf der im Verbindungskopf 5 ausgebildeten sichelartigen Nuten 15 und Fig. 4 eine Ansicht aus einer um 90° gedrehten Richtung, d.h. in Richtung des Verlaufs der Nuten 15. Der Verbindungskopf 5 besteht aus einem zylinderförmigen Teil, der sich zum Schaft 4 hin kegelstumpfförmig verjüngt. Im oberen Drittel des Verbindungskopfes 5 sind zwei einander be­züglich der Bolzenachse 3a gegenüberliegende horizontale sichelartige Nuten 15 angebracht, die etwa senkrecht zur Bolzenachse 3a verlaufen. Die parallel zur Bolzenachse 3a verlaufenden Wände (Nutgrund) 15a der sichelartigen Nuten 15 sind eben ausgebildet. Das Anschlußstück 6 wird mit seinen Kufen 8a in die sichelartigen Nuten 15 des Ankerbolzens 3 eingehängt. Es wird so oberhalb der Nuten 15 ein tellerartiger Verbindungskopf 5a zur Weiterleitung der Last vom Ankerbolzen 3 auf das Anschlußstück 6 und schließlich auf das nicht dargestellte Hebezeug ausgebildet.Fig. 3 shows a view of the anchor bolt 3 according to the invention perpendicular to the course of the crescent-shaped grooves 15 formed in the connecting head 5 and Fig. 4 shows a view from a direction rotated by 90 °, i.e. in the direction of the course of the grooves 15. The connecting head 5 consists of a cylindrical part which tapers towards the shaft 4 in the shape of a truncated cone. In the upper third of the connecting head 5, two horizontal, sickle-like grooves 15 are provided opposite each other with respect to the pin axis 3a, which run approximately perpendicular to the pin axis 3a. The walls (groove base) 15a of the sickle-like grooves 15 running parallel to the pin axis 3a are flat. The connector 6 is suspended with its runners 8a in the sickle-like grooves 15 of the anchor bolt 3. A plate-like connecting head 5a is thus formed above the grooves 15 for forwarding the load from the anchor bolt 3 to the connector 6 and finally to the lifting device, not shown.

Im mittleren Drittel ist der Verbindungskopf 5 mit einem etwa senkrecht zur Bolzenachse 3a liegenden Querloch 16 versehen, das vorteilhafterweise zum Nutgrund 15a der sichelartigen Nuten 15 senkrecht verläuft. Durch dieses Querloch 16 kann erforderlichenfalls ein Bewehrungsstab 17 (vgl. Fig.7 und 8) gesteckt werden, um die Last besser vom Ankerbolzen 3 auf den Betonfertig­teil 1 übertragen zu können. Der untere Grund des Querlochs 16 kann, wie bei 16a angedeutet, nach außen zu abfallend ausgebildet sein, um sich einer allfälligen Krümmung des Bewehrungsstabes 17 besser anzupassen.In the middle third the connecting head 5 is provided with a transverse hole 16 lying approximately perpendicular to the pin axis 3a, which advantageously runs perpendicular to the groove base 15a of the crescent-like grooves 15. If necessary, a reinforcing bar 17 (see FIGS. 7 and 8) can be inserted through this transverse hole 16 in order to be able to better transmit the load from the anchor bolt 3 to the precast concrete part 1. The lower bottom of the transverse hole 16 can, like indicated at 16a, to be sloping outwards in order to better adapt to any curvature of the reinforcing bar 17.

Das untere Drittel des Verbindungskopfes 5 besteht aus dem kegel­förmigen Übergang zum Schaft 4, der gegebenenfalls mit elliptischem Quer­schnitt ausgebildet sein kann. Am unteren Ende des Schaftes ist eine übliche kegelstumpfförmige allseitige Verbreiterung 18 angestaucht, die ebenfalls als Verankerungsmittel im Beton dient.The lower third of the connecting head 5 consists of the conical transition to the shaft 4, which can optionally be formed with an elliptical cross section. At the lower end of the shaft, a conventional truncated cone-shaped widening 18 on all sides is used, which also serves as anchoring means in the concrete.

Die Fig. 5 und 6 zeigen jeweils Schnitte durch einen Aussparungs­körper 19 längs der zueinander senkrecht stehenden vertikalen Mittelebenen. Derartige Aussparungskörper 19 werden an der Innenseite der Schalung für den späteren Betonfertigteil 1 fest angebracht. Nach der Betonschüttung und dem Abbinden des Betons wird die Schalung gelöst und der Aussparungs­körper 19 aus dem fertigen Betonfertigteil 1 entfernt, so daß eine der Negativform des Aussparungskörpers 19 entsprechende Aussparung an der Be­tonoberfläche zwecks Angriffs des Anschlußstückes 6 am Kopf 5 des Anker­bolzens 3 entsteht (vgl. die Fig. 1,7,8).5 and 6 each show sections through a recess body 19 along the mutually perpendicular vertical center planes. Such recess body 19 are firmly attached to the inside of the formwork for the future precast concrete part 1. After the pouring of concrete and the setting of the concrete, the formwork is loosened and the recess body 19 is removed from the finished prefabricated concrete part 1, so that a recess corresponding to the negative shape of the recess body 19 is formed on the concrete surface for the purpose of attacking the connector 6 on the head 5 of the anchor bolt 3 (cf. Figs. 1,7,8).

Der in den Fig. 5 und 6 dargestellte, aus elastischem Werkstoff, ins­besondere Gummi oder elastischem Kunststoff bestehende Aussparungskörper 19 weist außen die Form einer Halbkugel auf, an der zwei gegenüberliegende Ab­schnitte fehlen; dadurch weist die Halbkugel zwei Abflachungen 20 auf, sowie gegebenenfalls noch eine dritte, dazu senkrechte Ablfachung 21 am Pol. Längs der auf die Abflachungen 20 senkrecht stehenden mittleren Verbindungsebene ist die Halbkugel eingeschnitten (bei 22 in Fig. 5), so daß der Aussparungs­körper 19 aufgeklappt werden kann, um in seinem Inneren den oberen Teil des Kopfes 5 des Ankerbolzens 3 aufnehmen zu können.The recess body 19 shown in FIGS. 5 and 6, consisting of elastic material, in particular rubber or elastic plastic, has the shape of a hemisphere on the outside, on which two opposite sections are missing; as a result, the hemisphere has two flattened portions 20 and, if appropriate, a third flattened portion 21, perpendicular thereto, on the pole. The hemisphere is cut along the middle connecting plane perpendicular to the flats 20 (at 22 in FIG. 5), so that the recess body 19 can be opened in order to be able to accommodate the upper part of the head 5 of the anchor bolt 3 in its interior.

Im Inneren des Aussparungskörpers 19 ist ein Hohlraum 23 ausgebildet, der als Negativform des Verbindungskopfes 5 des Ankerbolzens 3 ausgebildet ist, und der insbesondere zwei in die sichelartigen Nuten 15 des Verbin­dungskopfes 5 eindringende sichelartige Vorsprünge 24 aufweist. Zumindest der obere Abschnitt des Verbindungskopfes 5 wird somit vom Aussparungs­körper 19 vollständig umfaßt (bzw. füllt den Hohlraum 23 des Aussparungs­körpers 19 aus).In the interior of the recess body 19, a cavity 23 is formed, which is designed as a negative shape of the connecting head 5 of the anchor bolt 3, and which in particular has two sickle-like projections 24 penetrating into the sickle-like grooves 15 of the connecting head 5. At least the upper section of the connection head 5 is thus completely surrounded by the recess body 19 (or fills the cavity 23 of the recess body 19).

In der Basisfläche 25 des Aussparungskörper 19 sind Löcher 26, 27 vorge­sehen, die zum Befestigen des Aussparungskörpers an der Schalung bzw. zum Entfernen aus dem Betonfertigteil 1 dienen.Holes 26, 27 are provided in the base surface 25 of the recess body 19, which are used to fasten the recess body to the formwork or Remove from the precast 1 serve.

An Hand der Fig. 7 und 8 wird nunmehr die Wirkungsweise der erfin­dungsgemäßen Vorrichtung näher erläutert.The mode of operation of the device according to the invention will now be explained in more detail with reference to FIGS. 7 and 8.

Zunächst wird der Ankerbolzen 3 in den Betonfertigteil 1 eingebaut. Dazu wird der Ankerbolzen 3 mit seinem Verbindungskopf 5 in den aufklapp­baren Aussparungskörper 19 gegeben. Durch das Querloch 16 des Anker­bolzens 3 wird (wenn notwendig) ein entsprechendes Bewehrungseisen 17 eingelegt. Durch das Befestigen des Aussparungskörpers 19 (mittels der Löcher 26)an der Schalung oder einer Gegenplatte wird der Ankerbolzen 3 fest und sicher in seiner Lage gehalten, so daß er sich beim Einbetonieren nicht verlagern bzw. verschieben kann. Nach dem Erhärten des Betons wird der Aussparungskörper 19 aus dem Betonfertigteil 1 entfernt (z.B. durch Herausziehen bzw. Aushebeln mittels der Löcher 26), wodurch sich im Be­tonfertigteil 1 eine Aussparung in Form einer seitlich abgeplatteten Halb­kugel zur Aufnahme des Anschlußstückes 6 beim Ankuppeln des Betonfertig­teils 1 an das Hebezeug ergibt. In diese Aussparung ragt der mit den sichelartigen Nuten 15 versehene obere Teil des Verbindungskopfes 5 des Ankerbolzens 3 derart hinein, daß die beiden Kufen 8a des Anschlußstückes 6 in die sichelartigen Nuten 15 des Verbindungskopfes 5 eingehängt bzw. ein­geführt werden können, wodurch eine form- und kraftschlüssige Verbindung zwischen dem Anschlußstück 6 bzw. dem in dieses eingehängten Hebezeug einer­seits und dem Betonfertigteil 1 anderseits hergestellt wird.First, the anchor bolt 3 is installed in the precast concrete part 1. For this purpose, the anchor bolt 3 is placed with its connecting head 5 in the hinged recess body 19. A corresponding reinforcing bar 17 is inserted through the transverse hole 16 of the anchor bolt 3 (if necessary). By fastening the recess body 19 (by means of the holes 26) to the formwork or a counter plate, the anchor bolt 3 is held firmly and securely in its position so that it cannot shift or shift when concreted in. After the concrete has hardened, the recess body 19 is removed from the prefabricated concrete part 1 (for example, by pulling out or levering out by means of the holes 26), as a result of which a recess in the form of a laterally flattened hemisphere for receiving the connecting piece 6 when coupling the precast concrete part 1 to the hoist. In this recess, the upper part of the connecting head 5 of the anchor bolt 3, which is provided with the sickle-like grooves 15, protrudes in such a way that the two runners 8a of the connecting piece 6 can be hung or inserted into the sickle-like grooves 15 of the connecting head 5, whereby a shape and non-positive connection between the connector 6 or the hoist suspended in this on the one hand and the precast concrete part 1 on the other.

Für die verschiedenen Lastübertragungsfälle ergibt sich folgendes:The following results for the various load transmission cases:

Bei Zugrichtung des Hebezeuges in Richtung der Bolzenachse 3a des Ankerbolzens 3 übernehmen die Kufen 8a des Anschlußstückes 6 die Last des Betonfertigteils 1 auf der gesamten Breite des tellerartigen Verbin­dungskopfes 5a oberhalb der sichelartigen Nuten 15.When the hoist is pulled in the direction of the bolt axis 3a of the anchor bolt 3, the runners 8a of the connecting piece 6 take on the load of the precast concrete element 1 over the entire width of the plate-like connecting head 5a above the sickle-like grooves 15.

Bei einer schrägen Zugrichtung Z gemäß Fig. 7 wird sich durch den schrägen Kraftangriff das Anschlußstück 6 solange in Zugrichtung bewegen, bis die Kufen 8a des Anschlußstückes 6 in den Nuten 15 des Ankerbolzens 3 sperren, d.h. bis sich einerseits die Kufen 8a mit ihrer Außenseite unten am zylinderförmigen Mittelteil des Verbindungskopfes 5 abstützen - siehe Kreis B in Fig. 7 - und anderseits die Kufen 8a mit ihrer Innenseite auf der Unterseite des tellerartigen Verbindungskopfes 5a anliegen - siehe Kreis C in Fig. 7.7, the connector 6 will move in the pulling direction until the runners 8a of the connector 6 lock in the grooves 15 of the anchor bolt 3, ie until on the one hand the runners 8a with their outside below Support on the cylindrical middle part of the connection head 5 - see Circle B in FIG. 7 - and on the other hand the runners 8a rest with their inside on the underside of the plate-like connecting head 5a - see circle C in FIG. 7.

Es wird dadurch die horizontale Zugkraftkomponente ZH im Ankerbolzen 3 bei B und C abgestützt und das von der Komponente ZH herrührende Moment in eine Zug­kraft bei C und eine Druckkraft bei B zerlegt und vom Ankerbolzen 3 über das durchgesteckte Bewehrungseisen 17 in den Beton weitergeleitet; es wird somit keine Komponente der Abhebe- bzw. Aufstellkraft direkt auf den Beton übertragen, so daß Betonabplatzungen mit Sicherheit vermieden werden. Im Falle der in Fig. 7 dargestellten schrägen Zugrichtung wird die vertikale Kraftkomponente ZV bei C übertragen.It is thus supported horizontal tensile force component Z is H in the anchor bolt 3 at B and C and passed the originating from the component Z H moment in a tensile force at C and a pressure force at B disassembled and the anchor bolt 3 via the by inserted reinforcing bars 17 in the concrete; thus no component of the lifting or erecting force is transferred directly to the concrete, so that concrete spalling can be avoided with certainty. In the case of the oblique pulling direction shown in FIG. 7, the vertical force component Z V is transmitted at C.

Im Fall einer rein vertikalen Zugrichtung (nicht dargestellt) wird die vertikale Kraft auch bei C, jedoch über eine etwas breitere Fläche auf der Unterseite des tellerartigen Verbindungskopfes 5a über den verbleibenden Steg zwischen den Nuten 15 bzw. deren ebenen Nutgrund-Wänden 15a über den Schaft 4 und die Verbreiterung 18 in den Beton des Fertigteils 1 eingeleitet.In the case of a purely vertical pulling direction (not shown), the vertical force is also at C, but over a somewhat wider area on the underside of the plate-like connecting head 5a via the remaining web between the grooves 15 or their flat groove base walls 15a via the shaft 4 and the widening 18 initiated in the concrete of the prefabricated part 1.

Bei einer anderen schrägen Zugrichtung Y gemäß Fig. 8 wird sich durch den schrägen Kraftangriff das Anschlußstück 6 infolge des Spiels zwischen den Kufen 8a und dem zwischen den Nuten 15 bzw. deren ebenen Nutgrund-­Wänden 15a verbleibenden Steg des Ankerbolzens 3 seitlich an den Beton anlegen - siehe Kreis D in Fig. 8 - und auf der anderen Seite wird sich eine Berührung der Kufe 8a des Anschlußstückes 6 mit dem tellerartigen Verbindungskopf 5a des Ankerbolzens 3 ergeben - siehe Kreis E in Fig. 8. Dadurch wird eine zulässige Verbiegung des genannten Steges auftreten und in der Folge eine weitere Berührung zwischen dem einen Nutgrund 15a und der zugeordneten Stirnseite der Kufe 8a - siehe Kreis F in Fig. 8.In another oblique direction of pull Y according to FIG. 8, due to the oblique application of force, the connecting piece 6, due to the play between the runners 8a and the web of the anchor bolt 3 remaining between the grooves 15 or their flat groove base walls 15a, will laterally contact the concrete - See circle D in Fig. 8 - and on the other hand there will be a contact of the runner 8a of the connecting piece 6 with the plate-like connecting head 5a of the anchor bolt 3 - see circle E in Fig. 8. This will allow a permissible bending of the web mentioned occur and subsequently another contact between the one groove base 15a and the associated end face of the runner 8a - see circle F in FIG. 8.

Die horizontale Kraftkomponente YH wird zerlegt in eine Druckkraft zwischen Beton und Anschlußstück 6 bei D, in eine Druckkraft auf den zwischen den Nuten 15 verbleibenden Steg bei F und eine Zugkraft im ge­nannten Steg des Ankerbolzens 3 bei E. Die Druckkraft auf den Beton bei D ist durch genügend Beton in Richtung Y ausreichend abgesichert.The horizontal force component Y H is broken down into a compressive force between the concrete and the connecting piece 6 at D, into a compressive force on the web remaining between the grooves 15 at F and a tensile force in the mentioned web of the anchor bolt 3 at E. The compressive force on the concrete at D is adequately secured with enough concrete in the Y direction.

Die vertikale Kraftkomponente YV wird wie die vertikale Kraftkompo­nente ZV in den Beton des Fertigteils 1 eingeleitet.The vertical force component Y V , like the vertical force component Z V, is introduced into the concrete of the precast element 1.

Claims (4)

1. Vorrichtung zum Transportieren und Manipulieren von Schwerlasten, insbesondere Betonfertigteilen, mittels eines Hebezeuges, bestehend aus einem zum Einbetonieren in der Schwerlast bestimmten Ankerbolzen, der mit einem nur vorübergehend im Betonfertigteil vorhandenen, vorzugsweise aus elastischem Werkstoff, insbesondere Gummi oder elastischem Kunststoff, be­stehenden Aussparungskörper in die Schwerlast eingebaut ist, und einem An­schlußstück zum Verbinden des Ankerbolzens mit dem Hebezeug, das einen am Ankerbolzen angeformten Verbindungskopf, bestehend aus einem zylinderför­migen Teil, der sich zum Schaft des Ankerbolzens hin kegelstumpfförmig ver­jüngt, hintergreift und in bezug auf den Ankerbolzen schwenkbar gelagert ist, dadurch gekennzeichnet, daß im Verbindungskopf (5) des Ankerbolzens (3) min­destens zwei einander diametral gegenüberliegende, etwa senkrecht zur Bolzen­achse (3a) und parallel zueinander verlaufende sichelartige Nuten (15) vorgesehen sind, in die das Anschlußstück (6) mit seinen Kufen (8a) einhängbar ist, wobei die der Bolzenachse (3a) näher liegenden, parallel zur Bolzenachse (3a) ver­laufenden Wände (15a) der sichelartigen Nuten (15) (Nutgrund) eben ausgebildet sind.1. Device for transporting and manipulating heavy loads, in particular precast concrete parts, by means of a lifting device consisting of an anchor bolt intended for concreting in heavy load, which has a recess body that is only temporarily present in the precast concrete part, preferably made of elastic material, in particular rubber or elastic plastic is built into the heavy load, and a connecting piece for connecting the anchor bolt to the lifting device, which has a connecting head formed on the anchor bolt, consisting of a cylindrical part that tapers in a truncated cone shape towards the shaft of the anchor bolt, and is pivotally mounted with respect to the anchor bolt , characterized in that in the connecting head (5) of the anchor bolt (3) at least two diametrically opposed, approximately perpendicular to the bolt axis (3a) and parallel to each other crescent-like grooves (15) are provided, in which the connector k (6) can be suspended with its runners (8a), the walls (15a) of the sickle-like grooves (15) (groove base), which are closer to the bolt axis (3a) and run parallel to the bolt axis (3a), being flat. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Schaft (4) des Ankerbolzens (3) elliptischen Querschnitt aufweist und gegebenenfalls an sei­nem dem Anschlußstück (6) fernen Ende in an sich bekannter Weise eine allseitige Verbreiterung (18) aufweist.2. Device according to claim 1, characterized in that the shaft (4) of the anchor bolt (3) has an elliptical cross-section and, if appropriate, has an all-round widening (18) at its end which is distant to the connecting piece (6) in a manner known per se. 3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Verbindungskopf (5) des Ankerbolzens (3) auf der vom Anschlußstück (6) abge­wendeten Seite der sichelartigen Nuten (15) mit einem vorzugsweise senkrecht zum Nutgrund (15a) der sichelartigen Nuten (15) verlaufenden, in an sich be­kannter Weise etwa senkrecht zur Bolzenachse (3a) liegenden Querloch (16) ver­sehen ist.3. Apparatus according to claim 1 or 2, characterized in that the connecting head (5) of the anchor bolt (3) on the side facing away from the connector (6) of the sickle-like grooves (15) with a preferably perpendicular to the groove base (15a) of the sickle-like grooves (15) extending transverse hole (16) is provided in a known manner approximately perpendicular to the pin axis (3a). 4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der in an sich bekannter Weise in der Mitte geteilte und aufklappbare Aussparungskörper (19) in seinem Inneren einen Hohlraum (23) aufweist, der als Negativform des Verbindungskopfes (5) des Ankerbolzens (3) ausgebildet ist und insbesondere mit zwei in die sichelartigen Nuten (15) des Verbindungs­kopfes (5) eindringenden sichelartigen Vorsprüngen (24) versehen ist.4. Device according to one of claims 1 to 3, characterized in that the recess body (19) divided in the middle in a conventional manner and foldable has a cavity (23) in its interior, which as a negative form of the connecting head (5) of Anchor bolt (3) is formed and in particular is provided with two sickle-like projections (24) penetrating into the sickle-like grooves (15) of the connecting head (5).
EP19870890174 1986-08-21 1987-07-16 Device for moving and manipulating heavy loads, especially prefabricated concrete elements Expired - Lifetime EP0259295B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT225386A AT385972B (en) 1986-08-21 1986-08-21 DEVICE FOR TRANSPORTING AND MANIPULATING HEAVY LOADS, IN PARTICULAR PRECASTED PARTS
AT2253/86 1986-08-21

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EP0259295B1 EP0259295B1 (en) 1990-01-31

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FR2633959A1 (en) * 1988-07-11 1990-01-12 Arteon Marcel ANCHORING PIECE, PARTICULARLY FOR CONCRETE
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
WO1994008885A1 (en) * 1992-10-12 1994-04-28 Jessen Laurids A Load-engaging device for hoisting concrete building elements

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US3072992A (en) * 1960-04-11 1963-01-15 Aeroquip Corp Grip fitting
FR2072873A5 (en) * 1969-12-04 1971-09-24 Waerner Thor
FR2167274A5 (en) * 1972-01-11 1973-08-24 Arteon Marcel Cast panels contg inserts -eg anchorage bolts temporarily - located during casting between split plastic (gps) shells
GB1437010A (en) * 1973-09-26 1976-05-26 Mannesmann Leichtbau Gmbh Structural unit
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2633959A1 (en) * 1988-07-11 1990-01-12 Arteon Marcel ANCHORING PIECE, PARTICULARLY FOR CONCRETE
WO1990000658A1 (en) * 1988-07-11 1990-01-25 Marcel Arteon Anchorage piece, in particular for concrete
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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.
WO1994008885A1 (en) * 1992-10-12 1994-04-28 Jessen Laurids A Load-engaging device for hoisting concrete building elements
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US5580115A (en) * 1992-10-12 1996-12-03 Jessen; Laurids A. Load-engaging device for hoisting concrete building elements

Also Published As

Publication number Publication date
EP0259295B1 (en) 1990-01-31
ATA225386A (en) 1987-11-15
DE3761575D1 (en) 1990-03-08
AT385972B (en) 1988-06-10

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