EP0003561A1 - Conveying device for prefabricated concrete elements - Google Patents

Conveying device for prefabricated concrete elements Download PDF

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Publication number
EP0003561A1
EP0003561A1 EP79100290A EP79100290A EP0003561A1 EP 0003561 A1 EP0003561 A1 EP 0003561A1 EP 79100290 A EP79100290 A EP 79100290A EP 79100290 A EP79100290 A EP 79100290A EP 0003561 A1 EP0003561 A1 EP 0003561A1
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EP
European Patent Office
Prior art keywords
eyelet
hook
wire rope
plate
precast concrete
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
EP79100290A
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German (de)
French (fr)
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EP0003561B1 (en
Inventor
Peter Ing. Grad. Hoyer
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.)
Hermann Pfeifer & Co Firma GmbH
Hermann Pfeifer & Co GmbH
Pfeifer & Co Hermann GmbH
Original Assignee
Hermann Pfeifer & Co Firma GmbH
Hermann Pfeifer & Co GmbH
Pfeifer & Co Hermann GmbH
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Application filed by Hermann Pfeifer & Co Firma GmbH, Hermann Pfeifer & Co GmbH, Pfeifer & Co Hermann GmbH filed Critical Hermann Pfeifer & Co Firma GmbH
Publication of EP0003561A1 publication Critical patent/EP0003561A1/en
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Classifications

    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S52/00—Static structures, e.g. buildings
    • Y10S52/13—Hook and loop type fastener

Definitions

  • the invention relates to a device for transporting precast concrete elements, consisting of an anchoring element to be concreted in, which forms an eyelet in a recess of the precast concrete element for a releasable hook-like member for connection to a hoist.
  • German Patent 12 51 003 an anchor sleeve is concreted into the precast concrete element, which has an internal thread, into which a cable eyelet with a clamping sleeve, which carries the external thread, can be screwed. If the anchor sleeve is well secured against tearing, for example connected to the reinforcement, a very reliable means of transport is obtained.
  • Transport devices of the aforementioned type have the advantage that the link for connection to the hoist can be manipulated in a similar manner to a crane hook, so that the hanging condition can be easily monitored. It is disadvantageous, however, that the transferability of the forces via the tab described or a bolt or the like is only possible to a limited extent.
  • the dimensions of the parts that protrude into the recess of the precast concrete part and form an eyelet or a thickening to be detected must, of course, be kept small in order to ensure that Limit the dimensions of the recess or recess.
  • These components are also very sensitive to diagonal pull, which is often unavoidable. There is a risk of undetected overload, which can quickly lead to breakage and accidents.
  • the invention has set itself the task of creating a device for transporting precast concrete parts of the type mentioned, with which it is possible to use a hook-like member for connection to the hoist, which is easy to manipulate and easy to monitor in its correct application and with which it is possible to safely introduce comparatively high forces into the precast concrete element. It is an object of the invention to select the individual parts of the transport device so that the economic outlay remains as low as possible.
  • the invention is based on a device of the type described at the outset and proposes that the hook-like member made of cast steel comprises a lower hook part and an upper eyelet part, the outer contour of the hook part being essentially spherical and its rounded contact surface for the to be grasped by the hook, preferably made of wire rope, the eyelet is curved around a center of curvature approximately at the lower edge of the ball and the eyelet part attached to the hook part is plate-shaped and the plate has an opening for the hoist.
  • the interaction between the rounded contact surface for the eyelet and the spherical hook part allows for Appropriate adjustment of the recess in the precast element to achieve good all-round mobility of the hook-like link to the different pulling directions, so that even comparatively extreme diagonal pulls are possible without the hook-like link coming into contact with the precast concrete component and thereby creating additional, indefinable lever forces.
  • An important prerequisite here is that the rounded eyelet allows sufficient lateral movement and further that the eyelet is preferably made of wire rope. It has been found that it is possible by means of the wire rope to introduce extremely high forces into the precast concrete element without fear of overloading, which can lead to breakage immediately.
  • the specific strength of a wire rope material is much greater than that of a solid material and the increased safety results from the fact that only a few wires break when a wire rope is overloaded, but this does not lead to a notch effect, whereas when there is a local overload with a solid material; Especially with a high-quality material, a break occurs immediately.
  • the lower hook part of the hook-like link is adapted to the diameter of the eyelet material, the forces in the hook-like link can be well controlled and it is possible to manufacture the hook-like link from a high-quality cast steel, so that expensive forging work can be avoided.
  • the spherical outer contour fits on the one hand well to the required mobility of the hook-like link in relation to the precast concrete part and also results in sufficient cross sections at the most stressed points on the hook-like link.
  • the hook-like link can be used like a crane hook.
  • the risk of incorrect operation is comparatively low.
  • the hook-like member according to the invention is preferably used with an eyelet made of wire rope. It is clear, however, that if the loads are reduced correspondingly, the eyelet made of wire rope can also be replaced with an eyelet made of another material, for example of conventional armouring iron.
  • the invention further proposes that the plate plane substantially coincides with the plane of the eyelet. This clearly defines the level of best mobility and is easily recognizable from the outside.
  • the plate widens upwards and the smallest plate width essentially corresponds to the ball diameter. In this way, constrictions on the hook-like member are avoided and a good flow of force is achieved while avoiding local overstressing.
  • the invention also proposes a fuse in the form of a drop bolt in the hook mouth, which is guided at the transition between the ball and the plate.
  • This fall bolt must be raised to hook the hook-like member and then falls into its securing position. It prevents the correct hooking condition is lost when the hook-like link is not loaded.
  • the plate level is slightly angled in the position of use and that it is bent away from the hook mouth. This further increases the mobility of the hook-like member in relation to the eye. The possibility of pulling at an angle is reduced in one direction of pull. However, this is not a disadvantage, because the mounting status can be selected according to the circumstances.
  • the wire rope eyelet is preferably part of a wire rope loop that is concreted into the precast concrete part.
  • the loop is in particular formed by a clamping sleeve which is arranged such that it preferably lies opposite the eyelet on the wire rope loop, that is to say serves as anchoring.
  • the wire rope eyelet can also be formed by a hairpin-shaped piece of wire rope, the two ends of the wire rope piece, which preferably also have clamping sleeves, being anchored sufficiently deep in the precast concrete part.
  • the hook-like member 1 which emerges from the representations of FIGS. 1-4, consists of the upper eyelet part 3 and the lower hook part 2.
  • the lower hook part 2 is provided with an outer contour 4 , which essentially has the shape of a sphere.
  • the hook jaw 11 is incorporated into this ball and can be closed by the drop bolt 10.
  • This drop bolt 10 is guided in a guide 15 at the transition between the hook part and the eyelet part.
  • the fall bolt 10 can be raised so that the eyelet 6 (Fig. 1) can be inserted into the hook.
  • the contact surface 5 for this eyelet 6 is curved around the center of curvature 7, the curvature in the region of the central plane 16 of the hook-like member being able to be kept somewhat weaker than in the edge region 17.
  • the eyelet part 3 is formed by the plate 8 in which the opening 9 is arranged.
  • a crane hook can engage in the opening 9 or another connection means to the hoist.
  • a recess 19 is provided in the precast concrete part 18, which has an approximately hemispherical shape and in which the eyelet 6 of the wire rope loop 12 (see FIG. 1) is arranged. It is clear that in this way a good mobility for the hook-like member 1 is obtained in the plane shown in FIG. 1.
  • the eyelet 6 is formed by the wire rope loop 12.
  • the clamping sleeve 14 connects the ends of the wire rope to the loop.
  • the shape of the loop 12 is also determined by the bracket 23.
  • 1 and 2 has the advantage that a low-lying anchoring point is obtained by the clamping sleeve 14, which allows the introduction of considerable forces, even if the loop 12 is not connected to the reinforcement of the precast concrete element 18.
  • FIGS. 1 and 2 A variant of the wire rope loop according to FIGS. 1 and 2 results from the illustration in FIG. 5.
  • the two ends of the wire rope are connected like a tennis racket by a clamping sleeve 14, which has a conical outer contour.
  • a connection to a plate 24 can be obtained, which has a corresponding recess and good anchoring of the wire rope piece in the precast concrete part is obtained.
  • the plate 24 can of course also be replaced by a piece of flat iron, a disk or the like.
  • the wire rope ends are passed through the clamp 14 and folded to the side to a certain depth in the precast concrete part 18.
  • These wire rope pieces can, if desired, be shaped into further eyelets 6.
  • an eyelet 6 is molded into the wire rope, the eyelet being part of a ring in the wire rope.
  • the wire rope piece 13 is shaped like a hairpin. While the ends are provided with clamping sleeves 14 in the exemplary embodiment according to FIG. 9, such clamping sleeves are omitted in the exemplary embodiment according to FIG. 10.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)

Abstract

Die Vorrichtung zum Transport von Betonfertigteilen umfaßt eine einzubetonierende Drahtseilöse (6), die in einer Ausnehmung (19) des Betonfertigteils von einem lösbaren Glied (1) erfaßt werden kann. Dieses Glied (1) besitzt einen unteren Hakenteil (2), der im wesentlichen kugelförmig gestaltet ist und einen oberen plattenförmigen Teil mit einer Durchbrechung für das Hebezeug. Das Glied (1) kann wegen seiner besonderen Gestaltung in hochwertigem Stahlguß hergestellt werden und besitzt in der Ausnehmung (19) eine gute Beweglichkeit auch für Schrägzüge.The device for transporting precast concrete elements comprises a wire rope eyelet (6) to be concreted in, which can be gripped in a recess (19) in the precast concrete element by a releasable member (1). This link (1) has a lower hook part (2) which is essentially spherical and an upper plate-shaped part with an opening for the hoist. The link (1) can be made in high quality cast steel because of its special design and has a good mobility in the recess (19) even for inclined pulls.

Description

Die Erfindung betrifft eine Vorrichtung zum Transport von Betonfertigteilen, bestehend aus einem einzubetonierenden Verankerungselement, das in einer Vertiefung des Betonfertigteils eine Öse bildet für ein lösbares hakenartiges Glied zur Verbindung mit einem Hebezeug.The invention relates to a device for transporting precast concrete elements, consisting of an anchoring element to be concreted in, which forms an eyelet in a recess of the precast concrete element for a releasable hook-like member for connection to a hoist.

Vorrichtungen zum Transport von Betonfertigteilen sind in verschiedenen Bauweisen bekannt geworden. Im deutschen Patent 12 51 003 ist eine Ankerhülse in das Betonfertigteil einbetoniert, die ein Innengewinde besitzt, in welches eine Seilöse mit einer Klemmhülse, die das Außengewinde trägt, eingeschraubt werden kann. Wenn die Ankerhülse gut gegen Ausreißen gesichert ist, beispielsweise mit der Armierung verbunden ist, wird hierdurch ein sehr zuverlässiges Transportmittel erhalten.Devices for transporting precast concrete parts have become known in various designs. In German Patent 12 51 003, an anchor sleeve is concreted into the precast concrete element, which has an internal thread, into which a cable eyelet with a clamping sleeve, which carries the external thread, can be screwed. If the anchor sleeve is well secured against tearing, for example connected to the reinforcement, a very reliable means of transport is obtained.

Andere bekannte Vorrichtungenfür diesen Zweck, wie beispielsweise in der OS 2 316 986 beschrieben, bestehen in einem einzubetonierenden Verankerungselement, das in eine halbkugelförmige Vertiefung am Betonfertigteil hineinragt und dort eine Verdickung oder ein ähnliches Befestigungsmittel für ein Glied zur Verbindung mit dem Hebezeug trägt.Other known devices for this purpose, as described for example in OS 2 316 986, consist in an anchoring element to be concreted in, which protrudes into a hemispherical recess on the prefabricated concrete part and carries a thickening or similar fastening means for a link for connection to the hoist.

Eine ähnliche Konstruktion in der US-Patentschrift 1 957 235 schlägt vor, in die Ausnehmung im Betonfertigteil eine Lasche mit einer Querbohrung hineinragen zu lassen, in die dann ein Haken eingreifen kann.A similar construction in US Pat. No. 1,957,235 suggests letting a tab with a transverse bore protrude into the recess in the precast concrete part, into which a hook can then engage.

Transportvorrichtungen der vorerwähnten Art haben den Vorteil, daß das Glied zur Verbindung mit dem Hebezeug ähnlich manipulierbar ist wie ein Kranhaken, daß also der Einhängezustand leicht überwachbar ist. Von Nachteil ist jedoch, daß die übertragbarkeit der Kräfte über die beschriebene Lasche oder einen Bolzen od. dgl. nur begrenzt möglich ist. Die Abmessungen der Teile, die in die Ausnehmung des Betonfertigteiles hineinragen und dort eine Öse oder eine zu erfassende Verdickung bilden, müssen naturgemäß gering gehalten werden, um die Abmessungen der Vertiefung oder der Ausnehmung zu begrenzen. Auch sind diese Bauteile sehr empfindlich gegen Schrägzug, der häufig unvermeidbar ist. Es besteht die Gefahr einer nicht bemerkten Überlastung, die rasch zum Bruch und zu Unfällen führen kann.Transport devices of the aforementioned type have the advantage that the link for connection to the hoist can be manipulated in a similar manner to a crane hook, so that the hanging condition can be easily monitored. It is disadvantageous, however, that the transferability of the forces via the tab described or a bolt or the like is only possible to a limited extent. The dimensions of the parts that protrude into the recess of the precast concrete part and form an eyelet or a thickening to be detected must, of course, be kept small in order to ensure that Limit the dimensions of the recess or recess. These components are also very sensitive to diagonal pull, which is often unavoidable. There is a risk of undetected overload, which can quickly lead to breakage and accidents.

Die Erfindung hat es sich zur Aufgabe gemacht, eine Vorrichtung zum Transport von Betonfertigteilen der eingangs erwähnten Art zu schaffen, mit der es möglich ist, ein hakenartiges Glied zur Verbindung mit dem Hebezeug zu benützen, das leicht manipulierbar und in seiner richtigen Anwendungsweise leicht überwachbar ist und mit dem es möglich ist, vergleichsweise hohe Kräfte gefahrlos in das Betonfertigteil einzuleiten. Dabei ist es ein Ziel der Erfindung, die Einzelteile der Transportvorrichtung so zu wählen, daß der wirtschaftliche Aufwand möglichst gering bleibt.The invention has set itself the task of creating a device for transporting precast concrete parts of the type mentioned, with which it is possible to use a hook-like member for connection to the hoist, which is easy to manipulate and easy to monitor in its correct application and with which it is possible to safely introduce comparatively high forces into the precast concrete element. It is an object of the invention to select the individual parts of the transport device so that the economic outlay remains as low as possible.

Zur Lösung dieser Aufgabe geht die Erfindung aus von einer Vorrichtung der eingangs beschriebenen Art und schlägt vor, daß das hakenartige, aus Stahlguß bestehende Glied einen unteren Hakenteil und einen oberen ösenteil umfaßt, wobei die Außenkontur des Hakenteils im wesentlichen kugelförmig gestaltet ist und dessen gerundete Auflagefläche für die vom Haken zu erfassende, vorzugsweise aus Drahtseil bestehen de öse um einen Krümmungsmittelpunkt etwa am unteren Kugelrand gekrümmt ist und wobei der an den Hakenteil ansehliessende ösenteil plattenförmig gestaltet ist und die Platte eine Durchbrechung für das Hebezeug besitzt.To achieve this object, the invention is based on a device of the type described at the outset and proposes that the hook-like member made of cast steel comprises a lower hook part and an upper eyelet part, the outer contour of the hook part being essentially spherical and its rounded contact surface for the to be grasped by the hook, preferably made of wire rope, the eyelet is curved around a center of curvature approximately at the lower edge of the ball and the eyelet part attached to the hook part is plate-shaped and the plate has an opening for the hoist.

Im Zusammenwirken zwischen der gerundeten Auflagefläche für die Öse und dem kugelförmigen Hakenteil läßt sich bei entsprechenderAnpassung der Vertiefung im Betonfertigteil eine gute, allseitige Beweglichkeit des hakenartigen-Gliedes an die verschiedenen Zugrichtungen erreichen, so daß auch vergleichsweise extreme Schrägzüge möglich sind, ohne daß das hakenartige Glied am Betonfertigteil zur Anlage kommt und dadurch zusätzliche, undefinierbare Hebelkräfte entstehen. Eine wichtige Voraussetzung ist hierbei, daß die gerundete Öse eine ausreichend seitliche Bewegung zuläßt und weiter, daß die Öse vorzugsweise aus Drahtseil besteht. Es ist gefunden worden, daß es mittels des Drahtseiles möglich ist, extrem hohe Kräfte in das Betonfertigteil einzuleiten, ohne daß Überlastungen zu befürchten sind, die unmittelbar zum Bruch führen können. Die spezifische Festigkeit eines Drahtseilmaterials ist wesentlich größer als diejenige eines Völlmaterials und die erhöhte Sicherheit ergibt sich dadurch, daß bei einer Überlastung bei einem Drahtseil nur einige Drähte brechen, was aber nicht zu einer Kerbwirkung führt, während bei einer örtlichen Überlastung bei einem Vollmateria; gerade bei einem hochwertigen Werkstoff, sofort ein Bruch entsteht.The interaction between the rounded contact surface for the eyelet and the spherical hook part allows for Appropriate adjustment of the recess in the precast element to achieve good all-round mobility of the hook-like link to the different pulling directions, so that even comparatively extreme diagonal pulls are possible without the hook-like link coming into contact with the precast concrete component and thereby creating additional, indefinable lever forces. An important prerequisite here is that the rounded eyelet allows sufficient lateral movement and further that the eyelet is preferably made of wire rope. It has been found that it is possible by means of the wire rope to introduce extremely high forces into the precast concrete element without fear of overloading, which can lead to breakage immediately. The specific strength of a wire rope material is much greater than that of a solid material and the increased safety results from the fact that only a few wires break when a wire rope is overloaded, but this does not lead to a notch effect, whereas when there is a local overload with a solid material; Especially with a high-quality material, a break occurs immediately.

Es ist aber notwendig, für die Öse verhältnismäßig kleine Querschnitte anzuwenden, da dieses Maß die Abmessung des ganzen hakenartigen Gliedes und auch der Vertiefung bestimmt.However, it is necessary to use relatively small cross-sections for the eyelet, since this dimension determines the dimension of the entire hook-like member and also of the recess.

Wenn wiederum der untere Hakenteil des hakenartigen Gliedes dem Durchmesser des ösenmaterials angepaßt ist, lassen sich die Kräfte im hakenartigen Glied gut beherrschen und es ist möglich, das hakenartige Glied aus einem hochwertigen'Stahlguß zu fertigen, so daß eine teure Schmiedearbeit vermieden werden kann. Die kugelartige Außenkontur paßt sich dabei einerseits gut an die geforderte Beweglichkeit des hakenartigen Gliedes gegenüber dem Betonfertigteil an und ergibt auch ausreichende Querschnitte an den am meisten belasteten Stellen des hakenartigen Gliedes.If, in turn, the lower hook part of the hook-like link is adapted to the diameter of the eyelet material, the forces in the hook-like link can be well controlled and it is possible to manufacture the hook-like link from a high-quality cast steel, so that expensive forging work can be avoided. The spherical outer contour fits on the one hand well to the required mobility of the hook-like link in relation to the precast concrete part and also results in sufficient cross sections at the most stressed points on the hook-like link.

Insgesamt ist das hakenartige Glied wie ein Kranhaken zu benützen. Die Gefahr einer Fehlbedienung ist vergleichsweise gering.Overall, the hook-like link can be used like a crane hook. The risk of incorrect operation is comparatively low.

Das hakenartige Glied gemäß der Erfindung wird vorzugsweise mit einer aus Drahtseil bestehenden öse benützt. Es ist aber klar, daß bei sinngemäßer Reduzierung der Belastungen die aus Drahtseil bestehende Öse auch eine öse aus einem anderen Werkstoff, beispielsweise aus üblichem Ärmierungseisen, ersetzbar ist.The hook-like member according to the invention is preferably used with an eyelet made of wire rope. It is clear, however, that if the loads are reduced correspondingly, the eyelet made of wire rope can also be replaced with an eyelet made of another material, for example of conventional armouring iron.

Die Erfindung schlägt weiter vor, daß die Plattenebene im wesentlichen mit der Ebene der Öse übereinstimmt. Dadurch wird die Ebene der besten Beweglichkeit deutlich definiert und ist auch von außen ohne weiteres erkennbar.The invention further proposes that the plate plane substantially coincides with the plane of the eyelet. This clearly defines the level of best mobility and is easily recognizable from the outside.

Günstig ist es, wenn sich die Platte nach oben verbreitert und die kleinste Plattenbreite im wesentlichen dem Kugel - durchmesser entspricht. Auf diese Weise werden Einschnürungen am hakenartigen Glied vermieden und ein guter Kraftfluß unter Vermeidung örtlicher überbeanspruchungen erreicht.It is favorable if the plate widens upwards and the smallest plate width essentially corresponds to the ball diameter. In this way, constrictions on the hook-like member are avoided and a good flow of force is achieved while avoiding local overstressing.

Die Erfindung schlägt ferner eine Sicherung vor in Form eines Fallbolzens im Hakenmaul, der am Übergang zwischen der Kugel und der Platte geführt ist. Dieser Fallbolzen muß zum Einhängen des hakenartigen Gliedes angehoben werden und fällt dann in seine Sicherungsstellung. Er verhindert, daß bei unbelastetem hakenartigen Glied der richtige Einhängezustand verlorengeht.The invention also proposes a fuse in the form of a drop bolt in the hook mouth, which is guided at the transition between the ball and the plate. This fall bolt must be raised to hook the hook-like member and then falls into its securing position. It prevents the correct hooking condition is lost when the hook-like link is not loaded.

Es hat sich als vorteilhaft herausgestellt, wenn die Plattenebene in der Gebrauchsstellung geringfügig abgewinkelt ist und zwar vom Hakenmaul weg gebogen ist. Dadurch wird die Beweglichkeit des hakenartigen Gliedes gegenüber der öse weiter gesteigert. In einer Zugrichtung wird zwar die Schrägzugmöglichkeit vermindert. Dies ist aber ohne Nachteil, weil der Einhängezustand jeweils nach den Gegebenheiten gewählt werden kann.It has proven to be advantageous if the plate level is slightly angled in the position of use and that it is bent away from the hook mouth. This further increases the mobility of the hook-like member in relation to the eye. The possibility of pulling at an angle is reduced in one direction of pull. However, this is not a disadvantage, because the mounting status can be selected according to the circumstances.

Die Drahtseilöse ist vorzugsweise Teil einer Drahtseilschlaufe, die in das Betonfertigteil einbetoniert ist. Dabei wird die Schlaufe insbesondere durch eine Klemmhülse gebildet, die so angeordnet ist, daß sie vorzugsweise der Öse an der Drahtseilschlaufe gegenüberliegt, also als Verankerung dient.The wire rope eyelet is preferably part of a wire rope loop that is concreted into the precast concrete part. The loop is in particular formed by a clamping sleeve which is arranged such that it preferably lies opposite the eyelet on the wire rope loop, that is to say serves as anchoring.

Die Drahtseilöse kann aber auch von einem haarnadelförmigen Drahtseilstück gebildet sein, wobei die beiden Enden des Drahtseilstückes, die vorzugsweise ebenfalls Klemmhülsen tragen, ausreichend tief im Betonfertigteil verankert sind.However, the wire rope eyelet can also be formed by a hairpin-shaped piece of wire rope, the two ends of the wire rope piece, which preferably also have clamping sleeves, being anchored sufficiently deep in the precast concrete part.

In der Zeichnung sind einige Ausführungsbeispiele der Erfindung schematisch dargestellt. Es zeigen:

  • Fig. 1 eine Ansicht der erfindungsgemässen Vorrichtung in der Gebrauchsstellung,
  • Fig. 2 eine Seitenansicht zur Darstellung der Fig. 1,
  • Fig. 3 und zwei Ansichten des hakenartigen Gliedes
  • Fig. 4 und
  • Fig. 5 - Fig. 10 verschiedene Ausbildungsformen der einzubetonierenden Öse.
In the drawing, some embodiments of the invention are shown schematically. Show it:
  • 1 is a view of the device according to the invention in the position of use,
  • 2 is a side view showing the FIG. 1,
  • Fig. 3 and two views of the hook-like member
  • Fig. 4 and
  • Fig. 5-10 different forms of training of the eyelet to be concreted.

Das hakenartige Glied 1, das aus den Darstellungen der Fig. 1 - 4 hervorgeht, besteht aus dem oberen Ösenteil 3 und dem unteren Hakenteil 2. Wie insbesondere aus der Darstellung der Fig. 3 hervorgeht, ist der untere Hakenteil 2 mit einer Außenkontur 4 versehen, die im wesentlichen die Gestalt einer Kugel besitzt. In diese Kugel ist das Hakenmaul 11 eingearbeitet, das durch den Fallbolzen 10 verschließbar ist.Dieser Fallbolzen 10 ist in einer Führung 15 am Übergang zwischen dem Hakenteil und dem Ösenteil geführt. Der Fallbolzen 10 kann angehoben werden, so daß die öse 6 ( Fig. 1 ) in den Haken eingelegt werden kann.The hook-like member 1, which emerges from the representations of FIGS. 1-4, consists of the upper eyelet part 3 and the lower hook part 2. As can be seen in particular from the representation of FIG. 3, the lower hook part 2 is provided with an outer contour 4 , which essentially has the shape of a sphere. The hook jaw 11 is incorporated into this ball and can be closed by the drop bolt 10. This drop bolt 10 is guided in a guide 15 at the transition between the hook part and the eyelet part. The fall bolt 10 can be raised so that the eyelet 6 (Fig. 1) can be inserted into the hook.

Die Auflagefläche 5 für diese Öse 6 ist um den Krümmungsmittelpunkt 7 gekrümmt, wobei die Krümmung im Bereich der Mittelebene 16 des hakenartigen Gliedes etwas schwächer gehalten sein kann, als im Randbereich 17.The contact surface 5 for this eyelet 6 is curved around the center of curvature 7, the curvature in the region of the central plane 16 of the hook-like member being able to be kept somewhat weaker than in the edge region 17.

Wie deutlich aus den Fig. 1 und 4 hervorgeht, wird der ösenteil 3 von der Platte 8 gebildet, in der die Durchbrechung 9 angeordnet ist. In die Durchbrechung 9 kann beispielsweise ein Kranhaken eingreifen oder auch ein anderes Verbindungsmittel zum Hebezeug.As is clear from FIGS. 1 and 4, the eyelet part 3 is formed by the plate 8 in which the opening 9 is arranged. For example, a crane hook can engage in the opening 9 or another connection means to the hoist.

Im Betonfertigteil 18 ist eine Ausnehmung 19 vorgesehen, die etwa Halbkugelform besitzt und in der die Öse 6 der Drahtseilschlaufe 12 ( vgl. Fig. 1 ) angeordnet ist. Es ist klar, daß auf diese Weise in der Ebene, die die Fig. 1 darstellt, eine gute Beweglichkeit für das hakenartige Glied 1 erhalten wird.A recess 19 is provided in the precast concrete part 18, which has an approximately hemispherical shape and in which the eyelet 6 of the wire rope loop 12 (see FIG. 1) is arranged. It is clear that in this way a good mobility for the hook-like member 1 is obtained in the plane shown in FIG. 1.

Aus der Fig. 2 geht hervor, daß die Ebene der Platte 8 etwas abgebogen ist gegenüber der Ebene 20, die von der Öse 6 bzw. der Drahtseilschlaufe 12 bestimmt wird. Diese Abbiegung hat den Vorteil, daß für besondere Belastungsfälle ein starkes Umlegen des hakenartigen Gliedes möglich ist, wie in der Fig. 2 mit strichpunktierten Linien 21 angedeutet ist.From Fig. 2 it can be seen that the plane of the plate 8 is slightly bent relative to the plane 20, which is determined by the eyelet 6 or the wire rope loop 12. This bend has the advantage that a strong flipping of the hook-like member is possible for special load cases, as indicated in FIG. 2 by dash-dotted lines 21.

Die Schrägzugmöglichkeit nach der anderen Seite ( vgl. strichpunktierte Mittellinie 22 in Fig. 2 ) ist zwar etwas vermindert, was aber ohne Belang ist.The possibility of pulling obliquely to the other side (cf. dash-dotted center line 22 in FIG. 2) is somewhat reduced, but this is irrelevant.

In den Darstellungen der Fig. 1 und 2 wird die öse 6 von der Drahtseilschlaufe 12 gebildet. Die Klemmhülse 14 verbindet die Enden des Drahtseils zur Schlaufe. Die Form der Schlaufe 12 wird ferner noch durch die Klammer 23 bestimmt.1 and 2, the eyelet 6 is formed by the wire rope loop 12. The clamping sleeve 14 connects the ends of the wire rope to the loop. The shape of the loop 12 is also determined by the bracket 23.

Die Ausbildung gemäss den Fig. 1 und 2 hat den Vorteil, daß durch die Klemmhülse 14 ein tiefliegender Verankerungspunkt erhalten wird, der die Einleitung erheblicher Kräfte zuläßt und zwar auch dann, wenn eine Verbindung der Schlaufe12 mit der Armierung des Betonfertigteils 18 unterbleibt.1 and 2 has the advantage that a low-lying anchoring point is obtained by the clamping sleeve 14, which allows the introduction of considerable forces, even if the loop 12 is not connected to the reinforcement of the precast concrete element 18.

Eine Variante zur Drahtseilschlaufe gemäss Fig. 1 und 2 ergibt sich aus der Darstellung der Fig. 5. Hier sind die beiden Enden des Drahtseils tennisschlägerartig durch eine Klemmhülse 14 verbunden, die eine konische Außenkontur besitzt. Auf diese Weise kann eine Verbindung mit einer Platte 24 erhalten werden, die eine entsprechende Ausnehmung aufweist und es wird eine gute Verankerung des Drahtseilstückes im Betonfertigteil erhalten.A variant of the wire rope loop according to FIGS. 1 and 2 results from the illustration in FIG. 5. Here, the two ends of the wire rope are connected like a tennis racket by a clamping sleeve 14, which has a conical outer contour. In this way, a connection to a plate 24 can be obtained, which has a corresponding recess and good anchoring of the wire rope piece in the precast concrete part is obtained.

Die Platte 24 kann natürlich auch durch ein Flacheisen - stück,.eine Scheibe od. dgl. ersetzt sein.The plate 24 can of course also be replaced by a piece of flat iron, a disk or the like.

Bei der Variante nach der Fig. 6 sind die Drahtseilenden durch die Klemme 14 hindurchgeführt und in gewisser Tiefe im Betonfertigteil 18 zur Seite umgelegt. Diese Drahtseilstücke können, wenn gewünscht, zu weiteren ösen 6 geformt sein.In the variant according to FIG. 6, the wire rope ends are passed through the clamp 14 and folded to the side to a certain depth in the precast concrete part 18. These wire rope pieces can, if desired, be shaped into further eyelets 6.

Fig. 7 zeigt eine Variante hierzu mit geringerer Einbettungstiefe.7 shows a variant of this with a lower embedment depth.

In der Fig. 8 ist in das Drahtseil eine Öse 6 eingeformt, wobei die Öse Teil eines Ringes im Drahtseil ist.8, an eyelet 6 is molded into the wire rope, the eyelet being part of a ring in the wire rope.

Bei den Ausführungsbeispielen nach den Fig. 9 und 10 ist das Drahtseilstück 13 jeweils haarnadelartig geformt. Wahrend im Ausführungsbeispiel nach der Fig. 9 die Enden mit Klemmhülsen 14 versehen sind, sind beim Ausführungsbeispiel nach der Fig. 10 solche Klemmhülsen weggelassen.9 and 10, the wire rope piece 13 is shaped like a hairpin. While the ends are provided with clamping sleeves 14 in the exemplary embodiment according to FIG. 9, such clamping sleeves are omitted in the exemplary embodiment according to FIG. 10.

Das Drahtseil der Fig. 10 ist beispielsweise in eine Bewehrungsmatte 25 eingefädelt.10 is threaded into a reinforcement mat 25, for example.

Claims (8)

1. Vorrichtung zum Transport von Betonfertigteilen, bestehend aus einem einzubetonierenden Verankerungselement, das in einer Vertiefung des Betonfertigteils eine Öse bildet für ein lösbares, hakenartiges Glied zur Verbindung mit einem Hebezeug, dadurch gekennzeichnet, daß das hakenartige, aus Stahlguß bestehende Glied (1) einen unteren Hakenteil (2) und einen oberen ösenteil (3) umfaßt, wobei die Außenkontur (4) des Hakenteils im wesentlichen kugelförmig gestaltet ist und dessen gerundete Auflagefläche (5) für die vom Haken zu erfassende, vorzugsweise aus Drahtseil bestehende Öse (6) um einen Krümmungsmittelpunkt (7) etwa am unteren Kugelrand gekrümmt ist und wobei der an den Hakenteil (2) anschließende Ösenteil (3) plattenförmig gestaltet ist und die Platte (8) eine Durchbrechung (9) für das Hebezeug besitzt.1. Device for transporting precast concrete parts, consisting of an anchoring element to be concreted in, which forms an eyelet in a recess of the precast concrete part for a releasable, hook-like link for connection to a lifting device, characterized in that the hook-like link (1) consisting of cast steel (1) has one comprises the lower hook part (2) and an upper eyelet part (3), the outer contour (4) of the hook part being essentially spherical and having a rounded contact surface (5) for the eyelet (6) to be gripped by the hook and preferably made of wire rope a center of curvature (7) is curved approximately at the lower edge of the ball and the eyelet part (3) adjoining the hook part (2) is plate-shaped and the plate (8) has an opening (9) for the hoist. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Plattenebene im wesentlichen mit der Ebene der Öse (6) übereinstimmt.2. Device according to claim 1, characterized in that the plate plane substantially coincides with the plane of the eyelet (6). 3. Vorrichtung nach einem oder beiden der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß sich die Platte (8) nach oben verbreitert und die kleinste Plattenbreite im wesentlichen dem Kugeldurchmesser entspricht.3. Device according to one or both of the preceding claims, characterized in that the plate (8) widens upwards and the smallest plate width essentially corresponds to the ball diameter. 4. Vorrichtung nach einem oder mehreren der vorhergehenden Ansprüche, gekennzeichnet durch eine Sicherung in der Form eines Fallbolzens (10) im Hakenmaul (11), der am Übergang zwischen Kugel und Platte geführt ist.4. Device according to one or more of the preceding claims, characterized by a fuse in the form of a fall bolt (10) in the hook jaw (11) which is guided at the transition between the ball and the plate. 5. Vorrichtung nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Plattenebene in der Gebrauchsstellung geringfügig abgewinkelt und zwar vom Hakenmaul (11) weg gebogen ist.5. The device according to one or more of the preceding claims, characterized in that the plate plane is slightly angled in the position of use, namely from the hook jaw (11) is bent away. 6. Vorrichtung nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Drahtseilöse (6) Teil einer Drahtseilschlaufe (12) ist.6. The device according to one or more of the preceding claims, characterized in that the wire rope eyelet (6) is part of a wire rope loop (12). 7. Vorrichtung nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Drahtseilöse von einem haarnadelförmigen Drahtseilstück (13) gebildet ist.7. The device according to one or more of the preceding claims, characterized in that the wire rope eyelet is formed by a hairpin-shaped piece of wire rope (13). 8. Vorrichtung nach einem oder mehreren der vorhergehenden Ansprüche, gekennzeichnet durch eine oder mehrere Klemmhülsen (14) am Drahtseilstück bzw. zur Bildung der Drahtseilöse, die auch der Verankerung dienen.8. The device according to one or more of the preceding claims, characterized by one or more clamping sleeves (14) on the wire rope piece or to form the wire rope eyelet, which also serve for anchoring.
EP79100290A 1978-02-15 1979-02-01 Conveying device for prefabricated concrete elements Expired EP0003561B1 (en)

Applications Claiming Priority (2)

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DE2806261A DE2806261C2 (en) 1978-02-15 1978-02-15 Device for transporting precast concrete parts
DE2806261 1978-02-15

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EP0003561B1 EP0003561B1 (en) 1981-04-29

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EP (1) EP0003561B1 (en)
JP (1) JPS54118048A (en)
AT (1) AT364503B (en)
AU (1) AU526197B2 (en)
CA (1) CA1109689A (en)
DE (1) DE2806261C2 (en)
DK (1) DK62079A (en)
ES (1) ES247540Y (en)

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FR2479166A1 (en) * 1980-03-29 1981-10-02 Haeussler Ernst DEVICE FOR ATTACHING A PREFABRICATED CONCRETE PIECE TO A LIFTING MACHINE
EP0059228A1 (en) * 1981-02-27 1982-09-08 Pfeifer Seil- und Hebetechnik GmbH & Co. Safety device for hook-shaped load-engaging elements of lifting devices
US4548584A (en) * 1983-05-10 1985-10-22 Economatics (Education) Limited Computer controlled mobile device
EP0262401A1 (en) * 1986-09-02 1988-04-06 Unistrut Europe PLC Holding device for an anchor bolt during the concreting of a precast concrete unit
FR2691738A1 (en) * 1992-05-27 1993-12-03 Tavernier Jean Pierre Supporting lug for concrete structural component - is made from steel cable length bent into loop, equipped with end bushes and embedded in concrete
AU701867B2 (en) * 1995-08-22 1999-02-04 Csr Humes Pty. Limited Restrained lifting anchor for concrete pipes
FR2927105A1 (en) * 2008-02-05 2009-08-07 Fehr Sa Absorptive form wall for use during construction of building, has flexible sling comprising intermediate portion, whose length is defined so as to authorize gripping of sling by operator for connecting sling to handling equipment

Also Published As

Publication number Publication date
EP0003561B1 (en) 1981-04-29
DE2806261A1 (en) 1979-08-23
AU526197B2 (en) 1982-12-23
DK62079A (en) 1979-08-16
ATA58679A (en) 1981-03-15
ES247540Y (en) 1981-11-16
CA1109689A (en) 1981-09-29
AT364503B (en) 1981-10-27
AU4404479A (en) 1979-08-23
JPS54118048A (en) 1979-09-13
ES247540U (en) 1981-06-01
DE2806261C2 (en) 1986-08-14
US4262951A (en) 1981-04-21

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