EP0688922A1 - Transport anchorage piece, in particular for prefabricated building elements and lifting piece, screwable into the anchorage piece - Google Patents

Transport anchorage piece, in particular for prefabricated building elements and lifting piece, screwable into the anchorage piece Download PDF

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Publication number
EP0688922A1
EP0688922A1 EP94109706A EP94109706A EP0688922A1 EP 0688922 A1 EP0688922 A1 EP 0688922A1 EP 94109706 A EP94109706 A EP 94109706A EP 94109706 A EP94109706 A EP 94109706A EP 0688922 A1 EP0688922 A1 EP 0688922A1
Authority
EP
European Patent Office
Prior art keywords
sleeve
face
stopper
transport anchor
internal thread
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
EP94109706A
Other languages
German (de)
French (fr)
Other versions
EP0688922B1 (en
Inventor
Klaus Fröhlich
Ernst Peppel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Leviat GmbH
Original Assignee
Halfen GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Halfen GmbH and Co KG filed Critical Halfen GmbH and Co KG
Priority to EP94109706A priority Critical patent/EP0688922B1/en
Priority to DE59405796T priority patent/DE59405796D1/en
Priority to US08/494,055 priority patent/US5649782A/en
Publication of EP0688922A1 publication Critical patent/EP0688922A1/en
Application granted granted Critical
Publication of EP0688922B1 publication Critical patent/EP0688922B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B28B23/005—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects with anchoring or fastening elements for the shaped articles
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/20—Joints and connections with indicator or inspection means
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/57—Distinct end coupler
    • Y10T403/5706—Diverse serial connections
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/57—Distinct end coupler
    • Y10T403/5741—Separate screw or pin-type connections

Definitions

  • the invention relates to a transport anchor, in particular for precast concrete, of the type specified in the preamble of claim 1 and to a load receiver which can be screwed into the transport anchor.
  • EP-0 118 002 A2 describes a transport anchor for precast concrete parts, which consists of a sleeve with an internal thread for screwing in a load receiver. The end located within the precast concrete is pressed onto the end of a rib steel so that no concrete can penetrate into the sleeve when the precast concrete is poured. At the front end of the rib steel, a spring element is supported, at the front end of which a disc or the like is attached, the surface of which approximately corresponds to the inner cross section of the sleeve.
  • the disc is to be used as a marking carrier to indicate the load or The same serve and on the other hand it should be ensured that no dirt penetrates into the sleeve.
  • a sufficient radial play must be present in order to prevent jamming of the disk in the sleeve, but this does not allow the interior of the sleeve to be sealed off from the outside.
  • the remaining annular gap allows dirt particles and, above all, moisture to penetrate into the sleeve, so that difficulties in screwing in the load receiver in question cannot be avoided.
  • the main advantages of the lifting anchor according to the invention can be seen in the fact that the plug covers the entire cross section of the sleeve opening, including the threads, and that the plug is moved back into the starting position by the load receiver without the need for spring means.
  • a preferred development of the subject matter of the invention consists in that at least one extending in the axial direction of the sleeve for non-positive connection to the stopper Surface is provided which interacts with a corresponding surface of the screw-in load receiver. This results in a positive connection between the stopper and the load receiver in the direction of rotation, so that the stopper is also rotated in accordance with the rotation of the load receiver, regardless of the respective direction of rotation. As soon as when the load receiver has been unscrewed, its last thread has left the internal thread of the sleeve and is axially removed, the stopper naturally remains in the - front - position assumed at this time.
  • two surfaces are provided which are formed by at least one elongate projection which is arranged symmetrically on the end face of the stopper. In this way, a symmetrical introduction of force to the stopper is achieved, thereby avoiding transverse forces and preventing the tendency to jam. So that the angle of rotation is kept low until the respective surfaces of the load receiver and plug engage, it is expedient that the surfaces are formed on a hexagon arranged concentrically to the central axis of the plug. In this way, after a rotation angle of 60 ° at the latest, there is an interlocking of the load receiver and stopper and then a synchronous rotary movement of the two parts.
  • the plug can also be used to hold positioning pins or fastening screws as an aid when fixing it in the formwork during the pouring of the precast concrete element.
  • the plug is provided with a blind hole with an internal thread, the opening of the blind hole being at the front end of the plug. So that when the load receiver is put in place to screw it the internal thread of the sleeve ensures sufficient axial play relative to the plug, the height of the surfaces in the axial direction should be at least 1.1 times, preferably 1.5 to 2.0 times the distance between two successive threads.
  • the plug can be produced in a particularly simple manner as a plastic injection molded part, the shape of the surfaces, i.e. Front and back can be designed in a variety of ways by specifying the tool shape.
  • the external thread of the plug should have a length of at least two threads.
  • the use of plastic as the material for the stopper is also advantageous in terms of material costs.
  • markings can expediently be used to designate the internal thread of the sleeve, i.e. Shape and size of the thread and the load capacity can be provided.
  • materials that are weather-resistant and corrosion-free can also be used for the stopper.
  • the internal thread of the sleeve should only extend over part of the total length of the sleeve.
  • the unthreaded section of the sleeve is intended for connection to the rib steel or a reinforcing bar. For connection to a rib steel, this is inserted at the front into the rear end of the sleeve and the threadless section of the sleeve is pressed onto the rib steel.
  • two diametrically opposite bores are provided in the threadless section of the sleeve and that the end of the internal thread adjacent to the threadless section is provided with a further stopper which is immovable in the sleeve attached in particular is pressed.
  • This second plug forms a wall at the inner end of the internal thread, through which the further advance of concrete during the pouring of the precast concrete element penetrates into the interior of the sleeve, which has the thread.
  • the present invention also provides a load receiver for sleeve-shaped transport anchors which, in a simple manner, rotates the stopper in both directions when the load receiver is screwed in or out of the sleeve.
  • This load receiver is characterized in that it has at least one axial recess or a projection on its end face facing the transport anchor, whereby an axially extending surface is formed which interacts with a corresponding surface of the end face of the stopper.
  • a groove is expediently provided on the end face, the surfaces being formed by the side walls of the groove, and the groove runs along the diameter of the load receiver.
  • This version is to be regarded as particularly preferred because it is also possible to retrofit existing load sensors without problems by milling or grinding in a groove running along the diameter on the front end face.
  • FIG. 1 shows the detail of a prefabricated concrete part 10 during its manufacture.
  • the form is completed by a formwork plate 11 on which the end face 15 of a transport anchor 12, which essentially consists of a sleeve 13 with an internal thread 14, bears.
  • the sleeve 13 comprises a first section 16, in which the internal thread 14 is provided, and a second section 17, which has a smooth inner contour.
  • a rib steel 19 is inserted, onto which the section 17 of the sleeve 13 is pressed. This results in a tight connection, which prevents the still liquid or flowable concrete from penetrating into the cavity 20 within the sleeve 13.
  • a plastic stopper 21 with an external thread 22 which is exactly adapted to the internal thread 14 of the sleeve 13.
  • a blind hole 23 with an internal thread is provided in the plastic plug 21, into which a threaded bolt 25 is screwed.
  • the threaded bolt 25 protrudes through an opening 26 in the formwork plate 11, as a result of which the transport anchor 12 is positioned in the predetermined position and secured by means of a wing nut 27, which is turned on the outer side on the threaded bolt 25. This measure ensures that the transport anchor 12 does not shift when filling the formwork form with concrete or when shaking for the purpose of compaction.
  • FIGS. 2a to 2f show different embodiments of plastic plugs, the example in FIG. 2e corresponding to that contained in FIG. 1.
  • Each of the representations of FIGS. 2a to 2f shows an axial section and a top view of the plastic stopper 21.
  • the plastic stopper 21 has a disk-shaped base body 24, on the upper end face 29 of which an elongated projection 28 is arranged symmetrically to the central axis is. Since the elongated projection 28 occupies only a small part of the total area of the end face 29, there is sufficient space on the end face for the application of markings 30.
  • These markings 30 can, for example, provide information about the size and shape of the thread 14 of the transport anchor 12 shown in FIG.
  • the markings 30 are provided in the injection mold for the plastic plugs 21, so that the mark 30 is produced when the plastic plugs 21 are produced without additional effort. In this way, the marking 30 is captively and unmistakably contained on the plastic stopper 21, so that errors which can occur when the markings 30 are subsequently applied are excluded.
  • FIG. 2b shows a plastic stopper 21 which is provided with an elongated recess 31 on the end face 29.
  • the disk-shaped base body 24 is provided on its end face 29 with a projection 32 in the form of a hexagon 33, the hexagon 33 being arranged concentrically to the central axis of the plastic stopper 21.
  • a cylindrical recess 34 is provided on the underside of the disk-shaped base body 24, as a result of which the volume of the plastic stopper 21 and thus the amount of material required for production is reduced.
  • FIG. 2d shows a plastic stopper 21 which has a blind hole 23 with an internal thread 35 along its longitudinal axis.
  • the front opening of the blind hole 23 is located on the end face 29 of the disk-shaped base body 24.
  • there are diametrically opposite projections 36 which protrude on the end face 29 as far as the projection 28 in FIG. 2a. In this embodiment, too, there is sufficient surface for the markings 30 on the end face 29.
  • the embodiment shown in FIG. 2e differs from that in FIG. 2d only by an annular recess 37 provided on the underside of the disk-shaped base body 24, which serves to reduce the volume of the plastic plug 21.
  • the embodiment of FIG. 2f is similar to that which is described in FIG. 2c, and differs from this in that it additionally makes a blind hole 23 within the projection 32 designed as a hexagon 33.
  • the lifting anchor 12 is shown in cooperation with a load receiver 40.
  • the load receiver 40 consists of a partially hollow bolt 41 with an external thread 42 and a rope loop 43 fastened in the opening of the bolt 41 and consisting of a steel cable.
  • the end of the bolt 41 surrounding the opening for receiving the cable loop 43 is designed as a radial collar 44.
  • the bolt 41 is solid, an elongated recess in the form of a groove 46 being provided on the end face 45.
  • the width of the groove 46 is Dimensioned so that it can accommodate the elongated projection 28 of the plastic plug 21.
  • the end face 45 of the bolt 41 is placed on the end face 29 of the plastic stopper 21, which is located on the front end face 15 of the transport anchor 12.
  • the elongated projection 28 and the groove 46 are brought into engagement so that side walls 47 of the groove 46 and side walls 48 of the elongated projection 28 come into mutual contact.
  • This interlocking engagement results in surfaces 47 and 48 extending in the axial direction of the sleeve 13 of the transport anchor 12, through which surfaces the rotational movement is transmitted to the plastic plug 21 when the bolt 41 is rotated.
  • the plastic plug 21 is also rotated synchronously, so that it clears the cavity 20 for receiving the bolt 41.
  • the length of the internal thread 14 is dimensioned sufficiently to be able to screw in the bolt 41 of the load receiver 40 until its collar 44 abuts the end face 15 of the sleeve 13. This is shown in Fig. 3a.
  • the bolt 41 is unscrewed from the internal thread 14, the coupling of the plastic plug 21 following the rotation of the bolt 41 by means of the projection 28 engaging in the groove 46.
  • the plastic stopper 21 remains at the front end of the sleeve 13 and thus prevents dirt from penetrating into the interior 20 of the transport anchor 12.
  • FIG. 4 differs from that of FIG. 1 by the reinforcement of the transport anchor 12 in the precast concrete part 10.
  • This transport anchor 12 consists of a sleeve 50 with a first section 51, which is provided with the internal thread 14, and with a second section 52 with a smooth inner wall.
  • This threadless section 52 has two diametrically opposite bores 53 through which a reinforcing bar 54 runs.
  • a second plug 55 In the first section 51 with the internal thread 14 there is a second plug 55, which also has an external thread 56, this second plug 55 being screwed in as far as the inner end of the thread 14.
  • the second plug 55 is provided with a recess 57, for example in the form of a slot.
  • the second plug 55 seals the cavity 20 which is formed in the sleeve 50 and thus prevents the penetration of concrete when the precast concrete is poured. 4 corresponds to that of FIG. 1, so that reference is made to the relevant description.
  • Another embodiment which is not shown in the drawing, is that the internal thread of the sleeve extends over its entire axial length.
  • the end of the sleeve located inside the precast concrete element can thus be provided with a screw-in anchor element before the formwork is filled.

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

Abstract

The transport anchor comprises an internally threaded sleeve (13) into which the load pick-up is screwed. An externally threaded stopper (21) is screwed in to engage positively into the inner thread (14) of the sleeve. The stopper has on its outer end face the connecting member for a screw driver. These connecting members can be two faces formed by an oblong projection (28) set symmetrically on the end face of the stopper. The stopper can have a blind hole (23) with inner thread with the opening of the blind hole set on the front end side of the stopper. <IMAGE>

Description

Die Erfindung bezieht sich auf einen Transportanker, insbesondere für Betonfertigteile, der im Oberbegriff des Anspruchs 1 angegebenen Gattung sowie auf einen Lastaufnehmer, der in den Transportanker einschraubbar ist.The invention relates to a transport anchor, in particular for precast concrete, of the type specified in the preamble of claim 1 and to a load receiver which can be screwed into the transport anchor.

In der EP-0 118 002 A2 ist ein Transportanker für Betonfertigteile beschrieben, der aus einer Hülse mit einem Innengewinde zum Einschrauben eines Lastaufnehmers besteht. Das innerhalb des Betonfertigteils befindliche Ende ist auf das Ende eines Rippenstahles aufgepreßt, so daß beim Gießen des Betonfertigteils kein Beton in die Hülse eindringen kann. An dem stirnseitigen Ende des Rippenstahls ist ein Federelement abgestützt, an dessen vorderem Ende eine Scheibe oder dergleichen angebracht ist, deren Fläche annähernd dem Innenquerschnitt der Hülse entspricht. Beim Einschrauben eines Lastaufnehmers wird diese Scheibe entgegen der Kraft der Feder in die Hülse hineinbewegt und beim Herausdrehen des Lastaufnehmers schiebt die Feder die Scheibe in die Ausgangslage zurück, in der diese annähernd bündig mit der Vorderkante der Hülse liegt.EP-0 118 002 A2 describes a transport anchor for precast concrete parts, which consists of a sleeve with an internal thread for screwing in a load receiver. The end located within the precast concrete is pressed onto the end of a rib steel so that no concrete can penetrate into the sleeve when the precast concrete is poured. At the front end of the rib steel, a spring element is supported, at the front end of which a disc or the like is attached, the surface of which approximately corresponds to the inner cross section of the sleeve. When a load receiver is screwed in, this disk is moved into the sleeve against the force of the spring and when the load receiver is unscrewed, the spring pushes the disk back into the starting position, in which it lies approximately flush with the front edge of the sleeve.

Durch die bekannte Anordnung soll zum einen die Scheibe als Markierungsträger zur Angabe der betreffenden Last oder dergleichen dienen und zum anderen sollte erreicht werden, daß kein Schmutz in die Hülse eindringt. Damit ein Verklemmen der Scheibe in der Hülse mit Sicherheit vermieden wird, muß ein ausreichendes Radialspiel vorhanden sein, wodurch jedoch ein dichter Abschluß des Hülseninnenraums gegen außen nicht möglich ist. Durch den verbleibenden Ringspalt können Schmutzpartikel und vor allem Feuchtigkeit in die Hülse eindringen, so daß Schwierigkeiten beim Eindrehen des betreffenden Lastaufnehmers nicht zu vermeiden sind. Insbesondere bei Lagerung des Betonfertigteils über einen längeren Zeitraum kann nicht ausgeschlossen werden, daß sich der Hohlraum hinter der Platte mit Schmutz zusetzt und damit ein Eintauchen der Platte in die Hülse verhindert wird.Due to the known arrangement, on the one hand, the disc is to be used as a marking carrier to indicate the load or The same serve and on the other hand it should be ensured that no dirt penetrates into the sleeve. A sufficient radial play must be present in order to prevent jamming of the disk in the sleeve, but this does not allow the interior of the sleeve to be sealed off from the outside. The remaining annular gap allows dirt particles and, above all, moisture to penetrate into the sleeve, so that difficulties in screwing in the load receiver in question cannot be avoided. In particular when storing the precast concrete element over a longer period of time, it cannot be ruled out that the cavity behind the plate will become clogged with dirt and thus prevent the plate from dipping into the sleeve.

Es ist daher die Aufgabe der vorliegenden Erfindung, einen Transportanker, der im Oberbegriff des Anspruchs 1 angegebenen Gattung zu schaffen, bei dem das Vorderende der Hülse dichtend verschlossen wird und der Verschluß automatisch mit Hilfe des Lastaufnehmers betätigt wird.It is therefore the object of the present invention to provide a transport anchor, the type specified in the preamble of claim 1, in which the front end of the sleeve is sealed and the closure is actuated automatically with the aid of the load receiver.

Diese Aufgabe wird bei einem Transportanker der gattungsgemäßen Art durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst.This object is achieved in a lifting anchor of the generic type by the characterizing features of claim 1.

Die wesentlichen Vorteile des erfindungsgemäßen Transportankers sind darin zu sehen, daß der Stopfen den gesamten Querschnitt der Hülsenöffnung überdeckt, einschließlich der Gewindegänge, und daß der Stopfen ohne die Notwendigkeit eines Federmittels von dem Lastaufnehmer in die Ausgangslage zurückbewegt wird.The main advantages of the lifting anchor according to the invention can be seen in the fact that the plug covers the entire cross section of the sleeve opening, including the threads, and that the plug is moved back into the starting position by the load receiver without the need for spring means.

Eine bevorzugte Weiterbildung des Erfindungsgegenstandes besteht darin, daß zum kraftschlüssigen Verbinden an dem Stopfen mindestens eine in axialer Richtung der Hülse verlaufende Fläche vorgesehen ist, die mit einer entsprechenden Fläche des einschraubbaren Lastaufnehmers zusammenwirkt. Dadurch ergibt sich eine formschlüssige Verbindung zwischen dem Stopfen und dem Lastaufnehmer in Drehrichtung, so daß entsprechend der Drehung des Lastaufnehmers ebenso der Stopfen mitgedreht wird, unabhängig von der jeweiligen Drehrichtung. Sobald beim Herausdrehen des Lastaufnehmers dessen letzter Gewindegang das Innengewinde der Hülse verlassen hat und axial abgenommen wird, bleibt selbstverständlich der Stopfen in der zu diesem Zeitpunkt eingenommenen - vorderen - Lage stehen.A preferred development of the subject matter of the invention consists in that at least one extending in the axial direction of the sleeve for non-positive connection to the stopper Surface is provided which interacts with a corresponding surface of the screw-in load receiver. This results in a positive connection between the stopper and the load receiver in the direction of rotation, so that the stopper is also rotated in accordance with the rotation of the load receiver, regardless of the respective direction of rotation. As soon as when the load receiver has been unscrewed, its last thread has left the internal thread of the sleeve and is axially removed, the stopper naturally remains in the - front - position assumed at this time.

Als besonders zweckmäßig wird angesehen, daß zwei Flächen vorgesehen sind, die durch mindestens einen länglichen Vorsprung gebildet sind, der symmetrisch auf der Stirnfläche des Stopfens angeordnet ist. Auf diese Weise wird eine symmetrische Krafteinleitung auf den Stopfen erreicht, wodurch Querkräfte vermieden werden und die Neigung zum Klemmen verhindert wird. Damit der Drehwinkel bis zum Ineinandergreifen der jeweiligen Flächen von Lastaufnehmer und Stopfen gering gehalten wird, ist es zweckmäßig, daß die Flächen an einem konzentrisch zur Mittelachse des Stopfens angeordneten Sechskant gebildet sind. Auf diese Weise ergibt sich spätestens nach einem Drehwinkel von 60° ein Ineinandergreifen von Lastaufnehmer und Stopfen und sodann eine synchrone Drehbewegung beider Teile.It is considered particularly expedient that two surfaces are provided which are formed by at least one elongate projection which is arranged symmetrically on the end face of the stopper. In this way, a symmetrical introduction of force to the stopper is achieved, thereby avoiding transverse forces and preventing the tendency to jam. So that the angle of rotation is kept low until the respective surfaces of the load receiver and plug engage, it is expedient that the surfaces are formed on a hexagon arranged concentrically to the central axis of the plug. In this way, after a rotation angle of 60 ° at the latest, there is an interlocking of the load receiver and stopper and then a synchronous rotary movement of the two parts.

Der Stopfen kann auch zur Aufnahme von Positionierstiften oder Befestigungsschrauben als Hilfsmittel beim Festlegen in der Schalung während des Gießens des Betonfertigteils benutzt werden. Zu diesem Zweck ist der Stopfen mit einem Sackloch mit Innengewinde versehen, wobei die Öffnung des Sacklochs an der vorderen Stirnseite des Stopfens liegt. Damit beim Aufsetzen des Lastaufnehmers zum Eindrehen in das Innengewinde der Hülse ein ausreichendes Axialspiel gegenüber dem Stopfen gewährleistet ist, sollte die Höhe der Flächen in axialer Richtung mindestens das 1,1fache vorzugsweise das 1,5 bis 2,0fache des Abstandes zweier aufeinanderfolgender Gewindegänge aufweisen.The plug can also be used to hold positioning pins or fastening screws as an aid when fixing it in the formwork during the pouring of the precast concrete element. For this purpose, the plug is provided with a blind hole with an internal thread, the opening of the blind hole being at the front end of the plug. So that when the load receiver is put in place to screw it the internal thread of the sleeve ensures sufficient axial play relative to the plug, the height of the surfaces in the axial direction should be at least 1.1 times, preferably 1.5 to 2.0 times the distance between two successive threads.

Der Stopfen kann auf besonders einfache Weise als Kunststoffspritzgußteil hergestellt werden, wobei die Formgebung der Oberflächen, d.h. Vorder- und Rückseite durch die Vorgabe der Werkzeugform vielfältig gestaltet werden können. Zur exakten Führung innerhalb des Innengewindes der Hülse sollte das Außengewinde des Stopfens eine Länge von mindestens zwei Gewindegängen besitzen. Die Verwendung von Kunststoff als Material für den Stopfen ist auch im Hinblick auf die Materialkosten vorteilhaft. An der Stirnseite des Stopfens können zweckmäßigerweise Markierungen zur Bezeichnung des Innengewindes der Hülse, d.h. Form und Größe des Gewindes sowie der Tragfähigkeit vorgesehen sein. Außer Kunststoff können für den Stopfen auch solche Materialien Verwendung finden, die witterungsbeständig und korrosionsfrei sind.The plug can be produced in a particularly simple manner as a plastic injection molded part, the shape of the surfaces, i.e. Front and back can be designed in a variety of ways by specifying the tool shape. For exact guidance within the internal thread of the sleeve, the external thread of the plug should have a length of at least two threads. The use of plastic as the material for the stopper is also advantageous in terms of material costs. On the end face of the plug, markings can expediently be used to designate the internal thread of the sleeve, i.e. Shape and size of the thread and the load capacity can be provided. In addition to plastic, materials that are weather-resistant and corrosion-free can also be used for the stopper.

Das Innengewinde der Hülse sollte lediglich über einen Teil der Gesamtlänge der Hülse reichen. Der gewindelose Abschnitt der Hülse ist zur Verbindung mit dem Rippenstahl oder einem Bewehrungsstab vorgesehen. Zur Verbindung mit einem Rippenstahl wird dieser stirnseitig in das hintere Ende der Hülse eingeführt und der gewindelose Abschnitt der Hülse auf den Rippenstahl gepreßt. Bei der Verbindung mit einem Bewehrungsstab ist es vorteilhaft, daß in dem gewindelosen Abschnitt der Hülse zwei diametral gegenüberliegende Bohrungen vorgesehen sind und daß das dem gewindelosen Abschnitt benachbarte Ende des Innengewindes mit einem weiteren Stopfen versehen ist, der unbeweglich in der Hülse befestigt insbesondere eingepreßt ist. Durch diesen zweiten Stopfen wird am inneren Ende des Innengewindes eine Wand gebildet, durch die das weitere Vordringen von Beton während des Gießens des Betonfertigteils in den Innenraum der Hülse, der das Gewinde aufweist, eindringt.The internal thread of the sleeve should only extend over part of the total length of the sleeve. The unthreaded section of the sleeve is intended for connection to the rib steel or a reinforcing bar. For connection to a rib steel, this is inserted at the front into the rear end of the sleeve and the threadless section of the sleeve is pressed onto the rib steel. When connecting to a reinforcing bar, it is advantageous that two diametrically opposite bores are provided in the threadless section of the sleeve and that the end of the internal thread adjacent to the threadless section is provided with a further stopper which is immovable in the sleeve attached in particular is pressed. This second plug forms a wall at the inner end of the internal thread, through which the further advance of concrete during the pouring of the precast concrete element penetrates into the interior of the sleeve, which has the thread.

Durch die vorliegende Erfindung wird auch ein Lastaufnehmer für hülsenförmige Transportanker geschaffen, der auf einfache Weise beim Eindrehen oder Herausdrehen des Lastaufnehmers in die Hülse den Stopfen in beiden Richtungen synchron mitdreht. Dieser Lastaufnehmer ist dadurch gekennzeichnet, daß er an seiner dem Transportanker zugewandten Stirnseite mindestens eine axiale Vertiefung bzw. einen Vorsprung aufweist, wodurch eine axial verlaufende Fläche gebildet ist, die mit einer entsprechenden Fläche der Stirnseite des Stopfens zusammenwirkt. Dabei ist zweckmäßigerweise an der Stirnseite eine Nut vorgesehen, wobei die Flächen von den Seitenwänden der Nut gebildet werden, und die Nut verläuft entlang des Durchmessers des Lastaufnehmers. Diese Ausführung ist als besonders bevorzugt anzusehen, weil auch ein Nachrüsten bereits vorhandener Lastaufnehmer problemlos möglich ist, indem an der vorderen Stirnseite eine entlang des Durchmessers verlaufende Nut eingefräst oder eingeschliffen wird.The present invention also provides a load receiver for sleeve-shaped transport anchors which, in a simple manner, rotates the stopper in both directions when the load receiver is screwed in or out of the sleeve. This load receiver is characterized in that it has at least one axial recess or a projection on its end face facing the transport anchor, whereby an axially extending surface is formed which interacts with a corresponding surface of the end face of the stopper. A groove is expediently provided on the end face, the surfaces being formed by the side walls of the groove, and the groove runs along the diameter of the load receiver. This version is to be regarded as particularly preferred because it is also possible to retrofit existing load sensors without problems by milling or grinding in a groove running along the diameter on the front end face.

Ausführungsbeispiele des Transportankers und Lastaufnehmers sind nachstehend anhand der Zeichnung näher erläutert. In der Zeichnung zeigt:

Fig. 1
einen Längsschnitt durch einen auf einen Rippenstahl gepreßten Transportanker in einem Betonfertigteil,
Fig. 2a-2f
jeweils einen Axialschnitt und eine Draufsicht auf verschiedene Ausführungen des Stopfens,
Fig. 3a+3b
einen Transportanker mit Lastaufnehmer im verbundenen und im gelösten Zustand und
Fig. 4
einen Längsschnitt durch einen Transportanker mit einem Bewehrungsstab.
Exemplary embodiments of the transport anchor and load receiver are explained in more detail below with reference to the drawing. The drawing shows:
Fig. 1
a longitudinal section through a transport anchor pressed onto a rib steel in a precast concrete part,
2a-2f
an axial section and a top view of different versions of the plug,
3a + 3b
a lifting anchor with load receiver in the connected and in the released state and
Fig. 4
a longitudinal section through a transport anchor with a reinforcing bar.

In der Fig. 1 ist der Ausschnitt eines Betonfertigteils 10 während seiner Herstellung dargestellt. Den Abschluß der Form bildet eine Schalungsplatte 11, an der die Stirnseite 15 eines Transportankers 12, der im wesentlichen aus einer Hülse 13 mit einem Innengewinde 14 besteht, anliegt. Die Hülse 13 umfaßt einen ersten Abschnitt 16, in dem das Innengewinde 14 vorgesehen ist und einen zweiten Abschnitt 17, welcher eine glatte Innenkontur besitzt. An dem in das Betonfertigteil 10 ragenden Ende 18 ist ein Rippenstahl 19 eingeführt, auf den der Abschnitt 17 der Hülse 13 aufgepreßt ist. Dadurch ergibt sich eine dichte Verbindung, die verhindert, daß der noch flüssige bzw. fließfähige Beton in den Hohlraum 20 innerhalb der Hülse 13 eindringt.1 shows the detail of a prefabricated concrete part 10 during its manufacture. The form is completed by a formwork plate 11 on which the end face 15 of a transport anchor 12, which essentially consists of a sleeve 13 with an internal thread 14, bears. The sleeve 13 comprises a first section 16, in which the internal thread 14 is provided, and a second section 17, which has a smooth inner contour. At the end 18 projecting into the precast concrete element 10, a rib steel 19 is inserted, onto which the section 17 of the sleeve 13 is pressed. This results in a tight connection, which prevents the still liquid or flowable concrete from penetrating into the cavity 20 within the sleeve 13.

Nahe der Stirnseite 15 der Hülse 13 befindet sich ein Kunststoffstopfen 21 mit einem Außengewinde 22, das exakt dem Innengewinde 14 der Hülse 13 angepaßt ist. In dem Kunststoffstopfen 21 ist ein Sackloch 23 mit einem Innengewinde vorgesehen, in das ein Gewindebolzen 25 geschraubt ist. Der Gewindebolzen 25 ragt durch eine Öffnung 26 der Schalungsplatte 11, wodurch der Transportanker 12 in der vorbestimmten Lage positioniert und mittels einer Flügelmutter 27, die auf der Außenseite auf den Gewindebolzen 25 gedreht ist, gesichert wird. Durch diese Maßnahme ist gewährleistet, daß der Transportanker 12 sich nicht beim Befüllen der Schalungsform mit Beton oder beim Rütteln zum Zwecke der Verdichtung verschiebt.Near the end face 15 of the sleeve 13 there is a plastic stopper 21 with an external thread 22 which is exactly adapted to the internal thread 14 of the sleeve 13. A blind hole 23 with an internal thread is provided in the plastic plug 21, into which a threaded bolt 25 is screwed. The threaded bolt 25 protrudes through an opening 26 in the formwork plate 11, as a result of which the transport anchor 12 is positioned in the predetermined position and secured by means of a wing nut 27, which is turned on the outer side on the threaded bolt 25. This measure ensures that the transport anchor 12 does not shift when filling the formwork form with concrete or when shaking for the purpose of compaction.

In den Fig. 2a bis 2f sind verschiedene Ausführungsformen von Kunststoffstopfen dargestellt, wobei das Beispiel der Fig. 2e demjenigen entspricht, der in der Fig. 1 enthalten ist. Jede der Darstellungen der Fig. 2a bis Fig. 2f zeigt einen axialen Schnitt sowie eine Draufsicht des Kunststoffstopfens 21. Im Beispiel der Fig. 2a besitzt der Kunststoffstopfen 21 einen scheibenförmigen Grundkörper 24, an dessen oberer Stirnseite 29 ein länglicher Vorsprung 28 symmetrisch zur Mittelachse angeordnet ist. Da der längliche Vorsprung 28 lediglich einen geringen Teil der Gesamtfläche der Stirnseite 29 einnimmt, verbleibt an der Stirnseite genügend Platz zur Anbringung von Markierungen 30. Diese Markierungen 30 können beispielsweise Angaben über die Größe und Form des Gewindes 14 des in Fig. 1 dargestellten Transportankers 12 sowie über die Tragfähigkeit bzw. der Größe der Last enthalten. Die Markierungen 30 sind in der Spritzgußform für die Kunststoffstopfen 21 vorgesehen, so daß beim Herstellen der Kunststoffstopfen 21 ohne Mehraufwand die Markierung 30 entsteht. Auf diese Weise ist die Markierung 30 unverlierbar und unverwechselbar an dem Kunststoffstopfen 21 enthalten, so daß Fehler, die bei einer nachträglichen Anbringung der Markierungen 30 auftreten können, ausgeschlossen sind.FIGS. 2a to 2f show different embodiments of plastic plugs, the example in FIG. 2e corresponding to that contained in FIG. 1. Each of the representations of FIGS. 2a to 2f shows an axial section and a top view of the plastic stopper 21. In the example of FIG. 2a, the plastic stopper 21 has a disk-shaped base body 24, on the upper end face 29 of which an elongated projection 28 is arranged symmetrically to the central axis is. Since the elongated projection 28 occupies only a small part of the total area of the end face 29, there is sufficient space on the end face for the application of markings 30. These markings 30 can, for example, provide information about the size and shape of the thread 14 of the transport anchor 12 shown in FIG. 1 as well as the load capacity or the size of the load. The markings 30 are provided in the injection mold for the plastic plugs 21, so that the mark 30 is produced when the plastic plugs 21 are produced without additional effort. In this way, the marking 30 is captively and unmistakably contained on the plastic stopper 21, so that errors which can occur when the markings 30 are subsequently applied are excluded.

Die Fig. 2b zeigt einen Kunststoffstopfen 21, der an der Stirnseite 29 mit einer länglichen Vertiefung 31 versehen ist. Im Ausführungsbeispiel der Fig. 2c ist der scheibenförmige Grundkörper 24 an seiner Stirnseite 29 mit einem Vorsprung 32 in Form eines Sechskant 33 versehen, wobei der Sechskant 33 konzentrisch zur Mittelachse des Kunststoffstopfens 21 angeordnet ist. An der Unterseite des scheibenförmigen Grundkörpers 24 ist eine zylindrische Ausnehmung 34 vorgesehen, wodurch das Volumen des Kunststoffstopfens 21 und somit auch die Menge des zur Herstellung benötigten Materials verringert wird.2b shows a plastic stopper 21 which is provided with an elongated recess 31 on the end face 29. In the exemplary embodiment in FIG. 2 c, the disk-shaped base body 24 is provided on its end face 29 with a projection 32 in the form of a hexagon 33, the hexagon 33 being arranged concentrically to the central axis of the plastic stopper 21. A cylindrical recess 34 is provided on the underside of the disk-shaped base body 24, as a result of which the volume of the plastic stopper 21 and thus the amount of material required for production is reduced.

Die Fig. 2d zeigt einen Kunststoffstopfen 21, der entlang seiner Längsachse das Sackloch 23 mit einem Innengewinde 35 besitzt. Die vordere Öffnung des Sacklochs 23 befindet sich an der Stirnseite 29 des scheibenförmigen Grundkörpers 24. Neben dem Sackloch 23 befinden sich diametral gegenüberliegend zwei Vorsprünge 36, die auf der Stirnseite 29 genauso weit hervorstehen wie der Vorsprung 28 in Fig. 2a. Auch bei dieser Ausführung verbleibt auf der Stirnseite 29 genügend Fläche für die Markierungen 30. Die in Fig. 2e gezeigte Ausführungsform unterscheidet sich von derjenigen in Fig. 2d lediglich durch eine an der Unterseite des scheibenförmigen Grundkörpers 24 vorgesehene ringförmige Ausnehmung 37, die dazu dient, das Volumen des Kunststoffstopfens 21 zu reduzieren. Die Ausführungsform der Fig. 2f ist ähnlich derjenigen, die in Fig. 2c beschrieben ist, und sie unterscheidet sich von dieser durch die zusätzliche Anbringung eines Sackloches 23 innerhalb des als Sechskant 33 ausgebildeten Vorsprungs 32.2d shows a plastic stopper 21 which has a blind hole 23 with an internal thread 35 along its longitudinal axis. The front opening of the blind hole 23 is located on the end face 29 of the disk-shaped base body 24. In addition to the blind hole 23 there are diametrically opposite projections 36 which protrude on the end face 29 as far as the projection 28 in FIG. 2a. In this embodiment, too, there is sufficient surface for the markings 30 on the end face 29. The embodiment shown in FIG. 2e differs from that in FIG. 2d only by an annular recess 37 provided on the underside of the disk-shaped base body 24, which serves to to reduce the volume of the plastic plug 21. The embodiment of FIG. 2f is similar to that which is described in FIG. 2c, and differs from this in that it additionally makes a blind hole 23 within the projection 32 designed as a hexagon 33.

In den Fig. 3a und 3b ist der Transportanker 12 im Zusammenwirken mit einem Lastaufnehmer 40 dargestellt. Der Lastaufnehmer 40 besteht aus einem teilweise hohlen Bolzen 41 mit einem Außengewinde 42 und einer in der Öffnung des Bolzens 41 befestigten Seilschlinge 43, die aus einem Stahlseil besteht. Das die Öffnung zur Aufnahme der Seilschlinge 43 umgebende Ende des Bolzens 41 ist als radialer Bund 44 ausgeführt. Im Bereich seines dem Transportanker 12 zugewandten Endes ist der Bolzen 41 massiv ausgeführt, wobei an der Stirnseite 45 eine längliche Ausnehmung in Form einer Nut 46 vorgesehen ist. Die Breite der Nut 46 ist so bemessen, daß sie den länglichen Vorsprung 28 des Kunststoffstopfens 21 aufnehmen kann.3a and 3b, the lifting anchor 12 is shown in cooperation with a load receiver 40. The load receiver 40 consists of a partially hollow bolt 41 with an external thread 42 and a rope loop 43 fastened in the opening of the bolt 41 and consisting of a steel cable. The end of the bolt 41 surrounding the opening for receiving the cable loop 43 is designed as a radial collar 44. In the area of its end facing the transport anchor 12, the bolt 41 is solid, an elongated recess in the form of a groove 46 being provided on the end face 45. The width of the groove 46 is Dimensioned so that it can accommodate the elongated projection 28 of the plastic plug 21.

Zur Befestigung des Lastaufnehmers 40 wird dieser mit der Stirnseite 45 des Bolzens 41 auf die Stirnseite 29 des Kunststoffstopfens 21 aufgesetzt, der sich an der vorderen Stirnseite 15 des Transportankers 12 befindet. Dabei werden der längliche Vorsprung 28 und die Nut 46 in Eingriff gebracht, so daß Seitenwände 47 der Nut 46 und Seitenwände 48 des länglichen Vorsprungs 28 in gegenseitige Anlage kommen. Durch dieses formschlüssige Ineinandergreifen ergeben sich in axialer Richtung der Hülse 13 des Transportankers 12 verlaufende Flächen 47 und 48, durch die beim Drehen des Bolzens 41 die Drehbewegung auf den Kunststoffstopfen 21 übertragen wird. Mit dem Einschrauben des Bolzens 41 des Lastaufnehmers 40 in das Innengewinde der Hülse 13 wird auch der Kunststoffstopfen 21 synchron mitgedreht, so daß dieser den Hohlraum 20 zur Aufnahme des Bolzens 41 freigibt. Die Länge des Innengewindes 14 ist ausreichend bemessen, um den Bolzen 41 des Lastaufnehmers 40 soweit einschrauben zu können, bis dessen Bund 44 an der Stirnseite 15 der Hülse 13 anliegt. Dies ist in Fig. 3a dargestellt.To attach the load receiver 40, the end face 45 of the bolt 41 is placed on the end face 29 of the plastic stopper 21, which is located on the front end face 15 of the transport anchor 12. The elongated projection 28 and the groove 46 are brought into engagement so that side walls 47 of the groove 46 and side walls 48 of the elongated projection 28 come into mutual contact. This interlocking engagement results in surfaces 47 and 48 extending in the axial direction of the sleeve 13 of the transport anchor 12, through which surfaces the rotational movement is transmitted to the plastic plug 21 when the bolt 41 is rotated. When the bolt 41 of the load receiver 40 is screwed into the internal thread of the sleeve 13, the plastic plug 21 is also rotated synchronously, so that it clears the cavity 20 for receiving the bolt 41. The length of the internal thread 14 is dimensioned sufficiently to be able to screw in the bolt 41 of the load receiver 40 until its collar 44 abuts the end face 15 of the sleeve 13. This is shown in Fig. 3a.

Zum Lösen des Lastaufnehmers 40 aus dem Transportanker 12 wird der Bolzen 41 aus dem Innengewinde 14 herausgedreht, wobei durch die Kopplung mittels des in die Nut 46 greifenden Vorsprungs 28 der Kunststoffstopfen 21 der Drehung des Bolzens 41 folgt. Sobald der Bolzen 41 vollständig aus der Hülse 13 herausgeschraubt ist und entnommen wird, bleibt der Kunststoffstopfen 21 am vorderen Ende der Hülse 13 stehen und verhindert damit das Eindringen von Schmutz in den Innenraum 20 des Transportankers 12.To release the load receiver 40 from the transport anchor 12, the bolt 41 is unscrewed from the internal thread 14, the coupling of the plastic plug 21 following the rotation of the bolt 41 by means of the projection 28 engaging in the groove 46. As soon as the bolt 41 is completely unscrewed from the sleeve 13 and is removed, the plastic stopper 21 remains at the front end of the sleeve 13 and thus prevents dirt from penetrating into the interior 20 of the transport anchor 12.

Das in Fig. 4 dargestellte Ausführungsbeispiel unterscheidet sich von demjenigen der Fig. 1 durch die Armierung des Transportankers 12 im Betonfertigteil 10. Dieser Transportanker 12 besteht aus einer Hülse 50 mit einem ersten Abschnitt 51, der mit dem Innengewinde 14 versehen ist, und mit einem zweiten Abschnitt 52 mit glatter Innenwand. Dieser gewindelose Abschnitt 52 besitzt zwei diametral gegenüberliegende Bohrungen 53, durch die ein Bewehrungsstab 54 verläuft. In dem ersten Abschnitt 51 mit dem Innengewinde 14 befindet sich ein zweiter Stopfen 55, der ebenfalls ein Außengewinde 56 besitzt, wobei dieser zweite Stopfen 55 bis zum inneren Ende des Gewindes 14 eingeschraubt ist. Um ein Schraubwerkzeug zum Eingriff zu bringen ist der zweite Stopfen 55 mit einer Ausnehmung 57 beispielsweise in Form eines Schlitzes versehen. Der zweite Stopfen 55 dichtet den Hohlraum 20, der in der Hülse 50 gebildet wird, ab und verhindert somit das Eindringen von Beton beim Gießen des Betonfertigteils. Im übrigen entspricht die Ausführung gemäß Fig. 4 derjenigen der Fig. 1, so daß auf die diesbezügliche Beschreibung verwiesen wird.The embodiment shown in FIG. 4 differs from that of FIG. 1 by the reinforcement of the transport anchor 12 in the precast concrete part 10. This transport anchor 12 consists of a sleeve 50 with a first section 51, which is provided with the internal thread 14, and with a second section 52 with a smooth inner wall. This threadless section 52 has two diametrically opposite bores 53 through which a reinforcing bar 54 runs. In the first section 51 with the internal thread 14 there is a second plug 55, which also has an external thread 56, this second plug 55 being screwed in as far as the inner end of the thread 14. In order to bring a screwing tool into engagement, the second plug 55 is provided with a recess 57, for example in the form of a slot. The second plug 55 seals the cavity 20 which is formed in the sleeve 50 and thus prevents the penetration of concrete when the precast concrete is poured. 4 corresponds to that of FIG. 1, so that reference is made to the relevant description.

Eine weitere Ausführungsform, die nicht in der Zeichnung dargestellt ist, besteht darin, daß das Innengewinde der Hülse über deren gesamte axiale Länge reicht. Das im Inneren des Betonfertigteils liegende Ende der Hülse kann somit vor dem Füllen der Schalung mit einem einschraubbaren Ankerelement versehen werden.Another embodiment, which is not shown in the drawing, is that the internal thread of the sleeve extends over its entire axial length. The end of the sleeve located inside the precast concrete element can thus be provided with a screw-in anchor element before the formwork is filled.

Claims (14)

Transportanker (12), insbesondere für Betonfertigteile, der aus einer Hülse (13, 50) mit einem Innengewinde (14) zum Einschrauben eines Lastaufnehmers (40) besteht, wobei die Hülse (13, 50) eine an der Außenseite des zu transportierenden Teils abschließende Stirnfläche (15) aufweist und an ihrem anderen Ende zur Verbindung mit einem Rippenstahl (19) oder Ankerelement (54) vorgesehen ist,
dadurch gekennzeichnet, daß in der Hülse (13) ein mit einem Außengewinde (22) versehener Stopfen (21) vorgesehen ist, der formschlüssig in das Innengewinde (14) der Hülse (13, 50) eingreift und darin schraubbar gelagert ist und wobei der Stopfen (21) an seiner außenliegenden Stirnfläche (29) Mittel zum kraftschlüssigen Verbinden mit einem Schraubwerkzeug aufweist.Transport anchor (12), in particular for precast concrete parts, which consists of a sleeve (13, 50) with an internal thread (14) for screwing in a load receiver (40), the sleeve (13, 50) closing one on the outside of the part to be transported Has end face (15) and is provided at its other end for connection to a rib steel (19) or anchor element (54),
characterized in that a plug (21) provided with an external thread (22) is provided in the sleeve (13), which engages positively in the internal thread (14) of the sleeve (13, 50) and is screw-mounted therein, and wherein the plug (21) on its outer end face (29) has means for non-positive connection with a screwing tool. Transportanker nach Anspruch 1,
dadurch gekennzeichnet, daß zum kraftschlüssigen Verbinden an dem Stopfen (21) mindestens eine in axialer Richtung der Hülse (13, 50) verlaufende Fläche vorgesehen ist, die mit einer entsprechenden Fläche des einschraubbaren Lastaufnehmers (40) zusammenwirkt.Transport anchor according to claim 1,
characterized in that at least one surface extending in the axial direction of the sleeve (13, 50) and cooperating with a corresponding surface of the screw-in load receiver (40) is provided on the stopper (21) for the positive connection. Transportanker nach Anspruch 2,
dadurch gekennzeichnet, daß zwei Flächen vorgesehen sind, die durch mindestens einen länglichen Vorsprung (28) gebildet sind, der symmetrisch auf der Stirnfläche (29) des Stopfens (21) angeordnet ist.Transport anchor according to claim 2,
characterized in that two surfaces are provided by at least one elongated projection (28) are formed, which is arranged symmetrically on the end face (29) of the plug (21). Transportanker nach Anspruch 2,
dadurch gekennzeichnet, daß die Flächen an einem konzentrisch zur Mittelachse des Stopfens (21) angeordneten Sechskant (33) gebildet sind.Transport anchor according to claim 2,
characterized in that the surfaces are formed on a hexagon (33) arranged concentrically to the central axis of the stopper (21). Transportanker nach Anspruch 3 oder 4,
dadurch gekennzeichnet, daß der Stopfen (21) mit einem Sackloch (23) mit Innengewinde (35) versehen ist, wobei die Öffnung des Sacklochs (23) an der vorderen Stirnseite (29) des Stopfens (21) liegt.Transport anchor according to claim 3 or 4,
characterized in that the plug (21) is provided with a blind hole (23) with an internal thread (35), the opening of the blind hole (23) being at the front end face (29) of the plug (21). Transportanker nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, daß die Höhe der Flächen in axialer Richtung mindestens das 1,1fache vorzugsweise das 1,5 bis 2,0fache des Abstandes zweier aufeinanderfolgender Gewindegänge aufweist.Transport anchor according to one of claims 2 to 5, characterized in that the height of the surfaces in the axial direction is at least 1.1 times, preferably 1.5 to 2.0 times the distance between two successive threads. Transportanker nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Stopfen (21) aus einem Kunststoffspritzgußteil besteht und das Außengewinde (22) eine Länge von mindestens zwei Gewindegängen besitzt.Transport anchor according to one of the preceding claims, characterized in that the stopper (21) consists of a plastic injection molded part and the external thread (22) has a length of at least two turns. Transportanker nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß an der Stirnseite (29) des Stopfens (21) Markierungen (30) zur Bezeichnung des Herstellers und/oder des Innengewindes (14) der Hülse (13, 50) und bezüglich der Tragfähigkeit vorgesehen sind.Transport anchor according to one of the preceding claims, characterized in that markings (30) for identifying the manufacturer and / or the internal thread (14) of the sleeve (13, 50) and with regard to the load-bearing capacity are provided on the end face (29) of the stopper (21) are. Transportanker nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Innengewinde (14) der Hülse (13, 50) lediglich über einen Teil der Gesamtlänge der Hülse (13, 50) reicht und der gewindelose Abschnitt (17, 52) der Hülse (13, 50) zur Verbindung mit dem Rippenstahl (19) oder Ankerelement (54) vorgesehen ist.Transport anchor according to one of the preceding claims, characterized in that the internal thread (14) of the sleeve (13, 50) extends only over part of the total length of the sleeve (13, 50) and the threadless section (17, 52) of the sleeve (13 , 50) is provided for connection to the rib steel (19) or anchor element (54). Transportanker nach Anspruch 9,
dadurch gekennzeichnet, daß in dem gewindelosen Abschnitt (52) in der Hülse (50) zwei diametral gegenüberliegende Bohrungen (53) vorgesehen sind und daß das dem gewindelosen Abschnitt (52) benachbarte Ende des Innengewindes (14) mit einem weiteren Stopfen (55) versehen ist, der unbeweglich in der Hülse (50) befestigt, insbesondere eingeschraubt oder eingepreßt ist.Transport anchor according to claim 9,
characterized in that two diametrically opposite bores (53) are provided in the sleeve (50) in the unthreaded section (52) and in that the end of the internal thread (14) adjacent to the unthreaded section (52) is provided with a further stopper (55) which is immovably fastened in the sleeve (50), in particular screwed in or pressed in. Transportanker nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß das Innengewinde (14) sich über die gesamte Länge der Hülse (13, 50) erstreckt und das innerhalb des Betonfertigteils liegende Ende zur Aufnahme eines einschraubbaren Ankerelementes dient.Transport anchor according to one of claims 1 to 8, characterized in that the internal thread (14) extends over the entire length of the sleeve (13, 50) and the end lying within the precast concrete part serves to receive a screw-in anchor element. Lastaufnehmer für hülsenförmige Transportanker, wobei der Lastaufnehmer (40) ein Außengewinde (42) besitzt, das dem Innengewinde (14) der Hülse (13, 50) entspricht und in den Transportanker (12) ein- bzw. ausschraubbar ist,
dadurch gekennzeichnet, daß der Lastaufnehmer (40) an seiner dem Transportanker (12) zugewandten Stirnseite (45) mindesten eine axiale Vertiefung (46) bzw. Vorsprung aufweist, wodurch eine axial verlaufende Fläche (47) gebildet ist, die mit einer entsprechenden Fläche (48) der Stirnseite (29) des Stopfens (21) zusammenwirkt.Load receiver for sleeve-shaped transport anchors, the load receiver (40) having an external thread (42) which corresponds to the internal thread (14) of the sleeve (13, 50) and can be screwed in or out of the transport anchor (12),
characterized in that the load receiver (40) has at least one axial recess (46) or protrusion on its end face (45) facing the transport anchor (12), whereby an axially extending surface (47) is formed, which has a corresponding surface (48) of the end face (29) of the stopper (21) cooperates. Lastaufnehmer nach Anspruch 12,
dadurch gekennzeichnet, daß an der Stirnseite (45) eine Nut (46) vorgesehen ist und die Flächen von den Seitenwänden (47) der Nut (46) gebildet werden und daß die Nut (46) entlang des Durchmessers des Lastaufnehmers (40) verläuft.Load receiver according to claim 12,
characterized in that a groove (46) is provided on the end face (45) and the surfaces are formed by the side walls (47) of the groove (46) and in that the groove (46) runs along the diameter of the load receiver (40). Lastaufnehmer nach Anspruch 12 oder 13,
dadurch gekennzeichnet, daß das Außengewinde (42) an einem teilweise hohlen Bolzen (41) angeordnet ist, wobei der Bolzen (41) eine dem Transportanker abgewandte Öffnung besitzt, in der die Enden einer Seilschlinge (43) befestigt sind.Load receiver according to claim 12 or 13,
characterized in that the external thread (42) is arranged on a partially hollow bolt (41), the bolt (41) having an opening facing away from the transport anchor, in which the ends of a rope loop (43) are fastened.
EP94109706A 1994-06-23 1994-06-23 Transport anchorage piece, in particular for prefabricated building elements and lifting piece, screwable into the anchorage piece Expired - Lifetime EP0688922B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP94109706A EP0688922B1 (en) 1994-06-23 1994-06-23 Transport anchorage piece, in particular for prefabricated building elements and lifting piece, screwable into the anchorage piece
DE59405796T DE59405796D1 (en) 1994-06-23 1994-06-23 Transport anchors, especially for precast concrete parts and load sensors that can be screwed into the transport anchor
US08/494,055 US5649782A (en) 1994-06-23 1995-06-23 Transport anchor especially for prefabricated concrete parts and load bearing member to be screwed into the transport anchor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP94109706A EP0688922B1 (en) 1994-06-23 1994-06-23 Transport anchorage piece, in particular for prefabricated building elements and lifting piece, screwable into the anchorage piece

Publications (2)

Publication Number Publication Date
EP0688922A1 true EP0688922A1 (en) 1995-12-27
EP0688922B1 EP0688922B1 (en) 1998-04-22

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EP94109706A Expired - Lifetime EP0688922B1 (en) 1994-06-23 1994-06-23 Transport anchorage piece, in particular for prefabricated building elements and lifting piece, screwable into the anchorage piece

Country Status (3)

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US (1) US5649782A (en)
EP (1) EP0688922B1 (en)
DE (1) DE59405796D1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0953551A1 (en) * 1998-04-29 1999-11-03 HM-Betonfertigteilwerk Hans Mauthe GmbH & Co. KG Prefabricated concrete element
EP1182308A1 (en) * 2000-08-24 2002-02-27 Deha Ankersysteme GmbH &amp; Co. KG Anchor with sleeve for concrete elements and process for its manufacture
FR2905388A1 (en) * 2006-09-01 2008-03-07 Marmou Richard Hustache Floating and submersible volumes anchoring device for e.g. sub-marine field, has bar cut at specific angle, and marking provided on bar by engraving or letter punching of letters followed by digits indicating maximum utilization load
DE202014100188U1 (en) 2014-01-17 2015-04-20 Philipp Gmbh Transport anchor, precast concrete element with at least one transport anchor, and use of a transport anchor for the production of such a precast concrete part
DE202015100568U1 (en) 2015-02-06 2016-05-09 Philipp Gmbh Transport anchor and concrete component with at least one such transport anchor
CN105765150A (en) * 2013-09-30 2016-07-13 科思创有限公司 Polycarbonate laminate window covers for rapid deployment providing protection from forced-entry and ballistics

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29612573U1 (en) * 1996-07-20 1997-11-20 Pfeifer Seil- und Hebetechnik GmbH & Co, 87700 Memmingen Device for joining precast concrete parts
NL1010661C2 (en) * 1998-11-26 2000-06-19 Novitec International B V Reinforcement system as well as concrete construction.
US6324793B1 (en) * 2000-04-04 2001-12-04 Michael Dean Klanke Burial crypt
US6230447B1 (en) 2000-07-06 2001-05-15 George E. Pribyl Lifting anchor for prefabricated concrete panels
US6595718B2 (en) * 2001-09-19 2003-07-22 Works R&D, Inc. Exo-lift
US7010891B1 (en) * 2002-04-02 2006-03-14 Ryan Clark Haunch assembly for supporting a concrete slab and method of making the haunch assembly
US7357366B1 (en) * 2003-10-24 2008-04-15 Russell Corporation Sports pole mounting structure
US20060248825A1 (en) * 2005-04-09 2006-11-09 Robert Garringer Panelized Log Home Construction
CH698304B1 (en) * 2005-10-10 2009-07-15 Fatzer Ag Cable anchor, in particular for rockfall or avalanche prevention structures.
US7905068B2 (en) * 2008-02-06 2011-03-15 Edgeworth Construction Products, Llc Protective cap for coupler bar
DE102011003164A1 (en) * 2011-01-26 2012-07-26 Aloys Wobben Method and device for erecting a tower of a wind energy plant
KR101220995B1 (en) * 2011-02-23 2013-01-10 김상기 Installing method of concrete block
WO2014035482A2 (en) 2012-08-29 2014-03-06 Bayer Materialscience Llc Energy absorber for high-performance blast barrier system
US9347232B1 (en) * 2014-03-10 2016-05-24 Sidney E. Francies, III Lifting and leveling assembly for precast concrete slabs and method
WO2015171775A1 (en) 2014-05-06 2015-11-12 Covestro Llc Polycarbonate based rapid deployment cover system
US20160208504A1 (en) * 2015-01-16 2016-07-21 Too-Eze Systems Ltd. Safety railing for building construction
US10597871B2 (en) 2016-07-21 2020-03-24 Meadow Burke, Llc Lifting and leveling insert for a precast concrete slab
US10309103B2 (en) 2016-07-21 2019-06-04 Meadow Burke, Llc Lifting and leveling insert for a precast concrete slab
WO2019002071A1 (en) 2017-06-27 2019-01-03 Frank Philipp Transport anchor
DE102017210761A1 (en) 2017-06-27 2018-12-27 Frank Philipp Lifting anchor
EP3421689B1 (en) 2017-06-27 2019-06-26 Frank Philipp Transport anchor
US10900191B2 (en) * 2018-02-05 2021-01-26 Shandong University Pulling-out device for prefabricated concrete support wall
USD882905S1 (en) 2018-05-31 2020-04-28 Meadow Burke, Llc Lift level
US11802584B2 (en) * 2020-08-10 2023-10-31 Consolidated Nuclear Security, LLC Foreign material exclusion plug for structural threads with breakaway tab

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2159732A1 (en) * 1971-12-02 1973-06-07 Herfeld Kg Dr SLEEVE DOWEL
EP0118002A2 (en) * 1983-02-08 1984-09-12 Deha Ankersysteme GmbH &amp; Co. KG Marking carrier for transport anchors
EP0132815A1 (en) * 1983-07-23 1985-02-13 Pfeifer Seil- und Hebetechnik GmbH &amp; Co. Device for use with manipulation anchors of prefabricated concrete elements

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA756325A (en) * 1967-04-11 Gutmann Siegfried Suspension anchorages for use in transporting fabricated concrete members
FR457974A (en) * 1913-05-16 1913-09-30 Frederick Arthur Bullivant Improvements in devices for filling holes or housings intended to receive eyebolts, screws, posts, stanchions, etc., once these parts have been removed
US1899531A (en) * 1931-07-11 1933-02-28 Josephine C Larsin Wire puller
US2210441A (en) * 1937-09-21 1940-08-06 Charles J Bachman Pole or post socket
US2630341A (en) * 1949-08-01 1953-03-03 Francis P Downey Conveyer coupling
DE1913912A1 (en) * 1969-03-19 1970-10-22 Pfeiffer Fa Ed Holding part for a precast concrete part
DE1961879C3 (en) * 1969-12-10 1978-12-21 Juergen 7800 Freiburg Goldberg Device for lifting and transporting precast concrete parts or the like
US4079983A (en) * 1977-02-04 1978-03-21 W. C. Dillon And Company, Inc. Weight lifting eye and socket
EP0019922A1 (en) * 1979-06-05 1980-12-10 Heinz G. Riss Transport anchor with enlarged foot and lifting head
DE3037177A1 (en) * 1980-10-02 1982-04-29 Jürgen 7801 Umkirch Goldberg DEVICE FOR MAKING A RECESSION IN PRECAST CONCRETE PARTS OR THE LIKE.
DE3329374C2 (en) * 1983-08-13 1985-06-13 Ernst Dr.-Ing. 4300 Essen Haeussler Auxiliary device for manipulating a precast reinforced concrete part
US5261198A (en) * 1991-10-22 1993-11-16 Mcmillan Larry S Modular concrete connector
US5501542A (en) * 1994-09-23 1996-03-26 Farmatic Research, Inc. Rapid coupling for a supported, driven shaft

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2159732A1 (en) * 1971-12-02 1973-06-07 Herfeld Kg Dr SLEEVE DOWEL
EP0118002A2 (en) * 1983-02-08 1984-09-12 Deha Ankersysteme GmbH &amp; Co. KG Marking carrier for transport anchors
EP0132815A1 (en) * 1983-07-23 1985-02-13 Pfeifer Seil- und Hebetechnik GmbH &amp; Co. Device for use with manipulation anchors of prefabricated concrete elements

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0953551A1 (en) * 1998-04-29 1999-11-03 HM-Betonfertigteilwerk Hans Mauthe GmbH & Co. KG Prefabricated concrete element
EP1182308A1 (en) * 2000-08-24 2002-02-27 Deha Ankersysteme GmbH &amp; Co. KG Anchor with sleeve for concrete elements and process for its manufacture
FR2905388A1 (en) * 2006-09-01 2008-03-07 Marmou Richard Hustache Floating and submersible volumes anchoring device for e.g. sub-marine field, has bar cut at specific angle, and marking provided on bar by engraving or letter punching of letters followed by digits indicating maximum utilization load
CN105765150A (en) * 2013-09-30 2016-07-13 科思创有限公司 Polycarbonate laminate window covers for rapid deployment providing protection from forced-entry and ballistics
DE202014100188U1 (en) 2014-01-17 2015-04-20 Philipp Gmbh Transport anchor, precast concrete element with at least one transport anchor, and use of a transport anchor for the production of such a precast concrete part
DE202015100568U1 (en) 2015-02-06 2016-05-09 Philipp Gmbh Transport anchor and concrete component with at least one such transport anchor

Also Published As

Publication number Publication date
US5649782A (en) 1997-07-22
DE59405796D1 (en) 1998-05-28
EP0688922B1 (en) 1998-04-22

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