EP3569795A1 - Device for positioning a transport anchor - Google Patents
Device for positioning a transport anchor Download PDFInfo
- Publication number
- EP3569795A1 EP3569795A1 EP19173073.8A EP19173073A EP3569795A1 EP 3569795 A1 EP3569795 A1 EP 3569795A1 EP 19173073 A EP19173073 A EP 19173073A EP 3569795 A1 EP3569795 A1 EP 3569795A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- anchor
- transport
- precast concrete
- formwork
- positioning
- 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
Links
- 239000011178 precast concrete Substances 0.000 claims abstract description 54
- 238000009415 formwork Methods 0.000 claims abstract description 43
- 239000004567 concrete Substances 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000001419 dependent effect Effects 0.000 claims 1
- 239000008267 milk Substances 0.000 description 4
- 210000004080 milk Anatomy 0.000 description 4
- 235000013336 milk Nutrition 0.000 description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000009416 shuttering Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000010409 ironing Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/62—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled
- B66C1/66—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof
- B66C1/666—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof for connection to anchor inserts embedded in concrete structures
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G15/00—Forms or shutterings for making openings, cavities, slits, or channels
- E04G15/04—Cores for anchor holes or the like around anchors embedded in the concrete
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/142—Means in or on the elements for connecting same to handling apparatus
Definitions
- the present invention relates to a device for positioning a lifting anchor in a formwork for a precast concrete part, said lifting anchor having an elongate anchor portion defining a longitudinal axis and a connecting portion adjacent to an end of the anchor portion in the direction of the longitudinal axis, the device comprising a recess body has, which is sealed on one side with the connecting portion connectable and on a side remote from the connecting portion side either directly with the inner wall of a formwork or with one side of an intermediate further recess body is tightly connected.
- the device also relates to a method for positioning transport anchors in formwork for precast concrete elements and also with precast concrete elements equipped with appropriately positioned transport anchors.
- nail plate Devices for positioning of transport anchors in formwork are known for example as so-called “nail plate”.
- a known nail plate typically has two parallel side surfaces, wherein on one of the side surfaces an approach for tight connection with the connecting portion of a transport anchor is provided.
- the approach to the nail plate is connected to the connecting portion of a transport anchor such that the transport anchor extends perpendicularly from one of the corresponding inner surface of the nail plate into the interior of the formwork.
- This nail plate is then arranged with the opposite side on the inside of a formwork, namely where you want to have the transport anchor in a precast concrete part, and fixed to the formwork.
- the substantially plate-shaped plate is nailed to the formwork, for example.
- the transport anchor then extends substantially perpendicular to the inner surface of the formwork into the space, which is later filled by concrete material. After curing of the concrete and removing the formwork, the nail plate is also demolished or removed separately when it is exposed on an outer surface of the precast concrete part.
- the connecting portion of the transport anchor which was previously connected to the corresponding approach to the nail plate, is then accessible from the outside, so that corresponding stop means for the transport of the precast concrete part can be attached to the connecting portion.
- the connecting portion may take various forms and is formed for example as a ball head or as a sleeve with internal thread, but could also be a threaded bolt with external thread or other connecting element.
- the anchor part is fixedly connected to one end of the connecting portion and consists for example of one or more wire rope sections or a wire rope loop.
- the anchor part is consciously designed as an elongate element that can extend correspondingly deep into the concrete and which defines a corresponding longitudinal axis.
- a wire rope of the transport anchor could also have a piece of reinforcing steel, at one end of a connecting sleeve or a ball head is attached.
- a precast concrete part such as a wall element, along an edge surface has two such transport anchors on both sides of a focal plane of the finished part and at a distance from each other.
- the distance between the transport anchor should avoid rocking and / or turning the precast concrete part on the crane hook.
- a threaded pin provided with a transport eyelet or attached directly to a support cable is then screwed into the threaded portion of each of the transport anchors, for example, or, if the threaded portion is an external thread, screwed onto this.
- eyelets then a transport rope is hung, so that connected to the rope crane or crane hook can lift the precast concrete.
- the rope or the ropes with which the connecting sections are connected via stops or eyelets with a crane hook results in a corresponding angling of the cable or cables relative to the relevant edge surface of the precast concrete element and relative to the longitudinal direction of the transport anchor, depending on the distance between these transport anchors.
- the transport ropes engage at an angle relative to the surface of a precast concrete part, which deviates significantly from the axis of the anchor section, which extends conventionally perpendicular to the concrete surface, typically by a value of up to approx 30 °.
- the object of the present invention is to position the transport anchor in a precast concrete part in such a way that the transverse forces acting on the transport anchor or its connecting section are significantly reduced and therefore wants a correspondingly improved device for positioning transport anchors in a formwork For precast concrete parts and thus provide a better positioning of the transport anchor in the precast concrete parts.
- the axis of the anchor portion, the longitudinal direction or axis of the lifting anchor and - if present - the axis of a threaded portion of the lifting anchor are identical or coincide and are used synonymously. Even when using a ball head as a connecting portion of this axis is generally along an axis of symmetry of the ball head.
- connection between the individual elements is referred to as dense when it is tight to concrete or to concrete milk.
- dense when it is tight to concrete or to concrete milk.
- a ball head or threaded portion of a threaded portion should be protected from any contamination and exposure to concrete or concrete milk to ensure a secure and functional connection with a load handler.
- the apparatus can be arranged within a precast concrete part such that one of the surfaces of the recess body is tightly connected to a shell inner side or an intermediate further recess body, while the anchor portions of adjacent lifting anchors of a precast concrete member are inclined toward each other, ie that the axes of the anchor sections each inclined in the direction of the other, adjacent transport anchor.
- both lifting anchors of the finished concrete part are then hung on the same crane hook either with a continuous rope or two separate ropes, the pulling direction of these ropes deviates from the direction of the axis of the lifting anchor by a smaller angle than with respect to a vertical to the respective concrete surface, the direction of the axis of the anchor portion in conventionally installed transport anchors corresponds.
- the angle between the pulling direction of the transporting member with respect to the armature portion axial direction is reduced by the inclining angle of the transporting anchor set by the positioning armature positioning device according to the present invention compared to a standard arrangement of the transporting anchors.
- the angle relative to the surface of the precast concrete part should be between 50 ° and 85 °, preferably between 70 ° and 80 ° and in particular about 75 °. Accordingly, the inclination of the axis of the anchor portion relative to a perpendicular to the associated surface (from which the connecting portion is accessible) between 5 ° and 40 °, preferably between 10 ° and 20 ° and in particular about 15 °.
- the recess body is referred to as such, because it is flush after pouring a precast concrete and before and possibly after removal of the formwork in a concrete surface from which it still needs to be removed, so that thereafter a recess remains in the concrete surface whose volume previously occupied by the recess body and at the bottom of the connecting portion of the transport anchor is accessible.
- the recess body is designed as a nail plate, which has two opposite surfaces, but not parallel to each other, but preferably at an angle of 15 ° ⁇ 5 ° are inclined relative to each other.
- the surface of the recess body facing the connection section has, according to an embodiment of the invention, a receiving element which fits the connection section, for example a threaded connection.
- a threaded connection for example a threaded connection.
- the threaded connector on the recess body either a threaded bolt with external thread or a threaded sleeve with internal thread.
- a corresponding ball socket is used as a receiving element.
- the recess body on two opposite planar surfaces, which are inclined to each other and connected by a peripheral edge surface.
- the peripheral edge surface forms part of a rotationally symmetrical surface, because this means that the recess body can be rotated in the recess formed in the concrete and thus can be easily removed from this recess.
- the rotationally symmetric surface is a spherical surface or a conical surface, but the edge surface on the recess body is generally no longer rotationally symmetrical, since it may have a varying width along its circumference.
- the recess body has a threaded sleeve as a connecting portion and on its threaded sleeve surface facing a threaded neck, this should extend along the axis defined by the edge surface rotationally symmetric surface, so that it is unscrewed in a simple manner by rotating the entire recess body of a threaded portion on the lifting anchor can be. Since the recess in the concrete simulates the edge surface of the recess body and the thread axis of the threaded portion and the threaded neck on the recess body is also the axis of symmetry of the associated surface of revolution, you can rotate the recess body in the concrete recess and thus solve the recess body of the threaded portion.
- the recess body also has an actuating element for releasing the threaded portion of the transport anchor.
- the upper surface of a nail plate could have a recess in the form of a hexagon socket, which makes it possible to rotate the recess body by means of a tool inserted into the hexagon socket (Allen key) and thus to be released from the threaded portion.
- the recess body has a marking which indicates the plane of a maximum angle between the upper surface and the lower surface of the nail plate. In this way it is easier possible to position the recess body in the desired direction, ie with maximum inclination in the direction of a neighboring transport anchor on a formwork.
- the recess body which is tightly connected to the threaded portion, not directly on the inner surface of a formwork, but instead on one side of a wedge-shaped further recess body, which in turn rests against the inner surface of the formwork.
- the former recess body can then be formed symmetrically and are tightly connected centrally with the threaded portion of the transport anchor, wherein the desired inclination of the transport anchor is ensured by additionally a wedge is used as another displacement body, on one side of the first-mentioned recess body is applied and the other Side is tightly connected to the inner wall of the formwork.
- a transport anchor with ball head is used.
- the recess body as a whole has the form of a ball cap, wherein the ball cap may be the cap of a hollow ball or a solid ball, the ball-head of the transport anchor is sealed to a ball socket in the zenith of the ball cap.
- the invention also relates to a precast concrete element with transport anchors, wherein the transport anchors have an anchor portion and a connecting portion in extension of the anchor portion, and wherein the axes of the anchor portions of two adjacent transport anchors are inclined towards each other.
- the present invention also relates to a method for producing a corresponding concrete part, in which the threaded portion of a concrete part is sealed to a surface of a recess body secured such that after a dense direct or indirect connection of the recess body with the associated shuttering wall, the axis of the threaded portion relative to a Vertical runs inclined to the formwork wall.
- the positioning of the transport anchor is carried out with the above-described means or Aussparungs stresses endeavorn. the formwork wall mentioned here is always the part of the formwork to which the recess body bears tightly
- the method for producing a precast concrete part with at least one cast-in lifting anchor, which has an anchor portion and an adjoining connecting portion is in particular characterized in that a device according to one of claims 1 to 14 is used to a transport anchor in a formwork for the precast concrete part in an orientation relative to a surface of the precast concrete part so to position that the axis of the transport anchor is inclined relative to a perpendicular to the surface of the precast concrete part.
- At least two lifting anchors are positioned in the formwork such that the axes of the threaded sections of each two lifting anchors are inclined towards each other.
- a precast concrete element according to the present invention with at least one surface on which transport anchors embedded in the precast concrete element are accessible, is characterized in that the relevant surface of the precast concrete element has at least one recess which has an area inclined at an angle to the surface, of which from a connecting portion of a transport anchor is accessible, wherein the longitudinal axis of the transport armature or the armature part thereof extends perpendicular to the base surface of the recess.
- the base surface of a recess in this surface which is inclined relative to a surface of a precast concrete part and from which a lifting anchor extends perpendicularly to the base surface into the concrete, is a characteristic for the use of the positioning device according to the invention and the products produced therewith.
- the inclination of the base of the recess relative to the respective surface is in principle arbitrary and can be chosen between, for example, between 5 ° and 50 °, but with an angle between 10 ° and 20 °, in particular 15 °, for most Use cases has proved to be very useful.
- At least one surface of the precast concrete part has at least two recesses whose base surfaces are inclined in mutually opposite directions and towards each other.
- the threaded portion is a threaded sleeve whose free end face is flush with the bottom of the recess.
- FIG. 1 can be seen a precast concrete part 30, which is formed for example in the form of a plate-shaped wall element, which is a (in FIG. 1 not directly visible) circumferential edge surface 32 has.
- the positions of two transport anchors 20 are further indicated by dashed lines, which consist of an anchor portion 22 and an attached at one end of the anchor portion 22 threaded sleeve 21 '.
- the anchoring portions 22 are elongated parts such as wire ropes, wire rope loops, or even sections of reinforcing bar which are fixedly connected (e.g., crimped and / or welded) to a threaded sleeve 21 'at one end and extend substantially along an imaginary extension thereof Thread or the threaded axis 50 extend (see FIG. 9 ).
- the lifting anchors 20 thus define a longitudinal direction, namely that of the threaded axis 50, which is also the longitudinal axis of the anchor part.
- the angle of inclination of the transport anchors 1, whose longitudinal direction is defined by the extent of the axis 50 of the threaded portion 21 ', is 15 ° with respect to a perpendicular to the edge surface 32 in the figures.
- the support cables extend at an angle of 30 ° relative to a perpendicular to the edge surface 32.
- the pulling direction of the support cables relative to the longitudinal direction of the transport anchor 20 tilted only 15 °.
- the pulling direction (60 ° to the edge surface 32) can be determined in advance by selecting a specific cable length and the determination of a certain distance of the lifting anchors on the edge surface 32nd
- FIG. 3 shows a further possible transport situation, in which a support bar 41 is used, so that the corresponding support cables 40 extend perpendicular to the upper edge surface 32 of the precast concrete 30.
- the support cables 40 are inclined relative to the axial direction of the threaded portion only by 15 °, so that even in this situation wear only very low lateral forces occur.
- FIGS. 4 to 6 show a designed for the corresponding inclination of the transport anchor nail plate 11th
- FIG. 4 shows in a plan view from below the lower surface 4 with the threaded connector 3 and a part of a conical surface forming edge surface 6.
- the axis of the conical surface 6 coincides with the axis 50 of the threaded connector 3 together.
- the lower surface 4 and the edge surface 6 can be seen in FIG. 5 , as well as the upper surface 5, the nail holes 9, via which the nail plate is attached to a formwork and the actuating element 7, which is formed in this case as a hexagon socket.
- FIG. 7 shows a variant of the present invention, which operates with two AussparungsISEn 11, 12, wherein the recess body 11 'is a hemisphere shell, in the center of the ball head portion of a transport anchor 20 is substantially symmetrically received, wherein on the surface of a formwork board, which the edge surface 32nd limited, a wedge 12 with a surface 17 abuts, while the opposite wedge surface 16 which is inclined relative to the wedge surface 17 again by about 15 °, a bearing surface for the recess body 11 'forms. Also in this way it can be achieved that the transport anchor 20 is inclined by an angle of 15 ° in this case relative to a perpendicular to the edge surface.
- FIG. 8 shows the arrangement according to FIG. 7 again in a perspective view, wherein the wedge 17 forms a recess 31 which has a relative to the edge surface 32 inclined base surface, wherein in the bottom of the recess 31 in turn the recess body 11 'is arranged, which is connected to the ball head portion 21 "tightly and this Head portion 21 "of the transport anchor 20 protects against the ingress of concrete or concrete milk in the region of the ball head.
- all of the concrete parts shown here have at least one of their edge surfaces 30 one or more recesses 31, the base surface of which is defined by the fact that it provides access to a connecting portion of a transport anchor is inclined relative to the edge surface 32 wherein the longitudinal axis 50 the transport anchor runs perpendicular to the base of the recess.
- FIG. 9 shows finally a lifting anchor 20 with a threaded portion 21 'and the anchor portion 22, which extends along the axis 50 of the anchor portion, which is also the axis of the threaded portion 21', wherein the anchor portion, for example, a wire rope or a wire rope loop or even parallel, at the bottom of a sleeve pressed ropes or a round steel with regardstauchtem end foot or a reinforcing steel in a straight or wavy form could exist.
- the anchor portion for example, a wire rope or a wire rope loop or even parallel
- the threaded portion 21 ' is screwed onto a threaded neck 3 of a recess body 11, specifically in the form of a nail plate 11, wherein the threaded neck 3 of the nail plate 11 extends with its axis perpendicular to the lower surface 4 of the nail plate 11, which in turn relative to the upper surface. 5 of the nail plate 11 is inclined by about 15 °.
- the axis 50 of the threaded portion 21 'of the transport anchor 20 is inclined relative to a perpendicular to the surface 5, which in turn is flush in a plane with the corresponding edge surface 32 of a precast concrete part.
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Abstract
Die vorliegende Erfindung betrifft eine Vorrichtung zur Positionierung eines Transportankers (20) in einer Schalung für ein Betonfertigteil (30), wobei der Transportanker (20) einen länglichen Ankerabschnitt (22), der eine Längsachse (50) definiert, und einen sich in Richtung der Längsachse an ein Ende des Ankerabschnitts (22) anschließenden Verbindungsabschnitt (21') aufweist, wobei die Vorrichtung einen Aussparungskörper (1,11) aufweist, der auf einer Seite (4) mit dem Verbindungsabschnitt (21') abgedichtet verbindbar ist und auf einer von dem Verbindungsabschnitt (21') abgewandten Seite (5, 25) entweder direkt mit der Innenwand einer Schalung oder mit einer Seite eines zwischengeschalteten weiteren Aussparungskörpers (12) dicht verbindbar ist. Um Transportanker in einem Betonfertigteil derart zu positionieren, dass die auf den Transportanker bzw. dessen Verbindungsabschnitt wirkenden Querkräfte deutlich reduziert sind und will daher eine entsprechend verbesserte Vorrichtung zum Positionieren von Transportankern in einer Schalung für Betonfertigteile und damit eine bessere Positionierung der Transportanker in den Betonfertigteilen bereitstellen, wird erfindungsgemäß vorgeschlagen, dass bei einem in Montageposition ausgerichteten Aussparungskörper (1) die Achse (50) des Ankerabschnitts (22) mit der mit einer Schalungswand dicht zu verbindenden Fläche (5, 15, 25) des entsprechenden Aussparungskörpers (1, 11, 12) unter einem Winkel von weniger als 90° geneigt verläuft.The present invention relates to a device for positioning a transport anchor (20) in a formwork for a precast concrete part (30), the transport anchor (20) having an elongated anchor section (22) which defines a longitudinal axis (50) and one in the direction of the The longitudinal axis has a connecting section (21 ') adjoining one end of the anchor section (22), the device having a recess body (1, 11) which can be connected in a sealed manner on one side (4) to the connecting section (21') and on one of The side (5, 25) facing away from the connecting section (21 ') can either be tightly connected either directly to the inner wall of a formwork or to one side of an interposed further recess body (12). In order to position transport anchors in a prefabricated concrete part in such a way that the transverse forces acting on the transport anchor or its connecting section are significantly reduced and therefore wants to provide a correspondingly improved device for positioning transport anchors in a formwork for precast concrete parts and thus a better positioning of the transport anchors in the precast concrete parts According to the invention, it is proposed that, in the case of a recess body (1) oriented in the assembly position, the axis (50) of the anchor section (22) with the surface (5, 15, 25) of the corresponding recess body (1, 11, 12) to be tightly connected to a formwork wall ) is inclined at an angle of less than 90 °.
Description
Die vorliegende Erfindung betrifft eine Vorrichtung zur Positionierung eines Transportankers in einer Schalung für ein Betonfertigteil, wobei der Transportanker einen länglichen Ankerabschnitt, der eine Längsachse definiert, und einen sich in Richtung der Längsachse an ein Ende des Ankerabschnitts anschließenden Verbindungsabschnitt aufweist, wobei die Vorrichtung einen Aussparungskörper aufweist, der auf einer Seite mit dem Verbindungsabschnitt abgedichtet verbindbar ist und auf einer von dem Verbindungsabschnitt abgewandten Seite entweder direkt mit der Innenwand einer Schalung oder mit einer Seite eines zwischengeschalteten weiteren Aussparungskörpers dicht verbindbar ist.The present invention relates to a device for positioning a lifting anchor in a formwork for a precast concrete part, said lifting anchor having an elongate anchor portion defining a longitudinal axis and a connecting portion adjacent to an end of the anchor portion in the direction of the longitudinal axis, the device comprising a recess body has, which is sealed on one side with the connecting portion connectable and on a side remote from the connecting portion side either directly with the inner wall of a formwork or with one side of an intermediate further recess body is tightly connected.
Die Vorrichtung betrifft weiterhin auch ein Verfahren zum Positionieren von Transportankern in Schalungen für Betonfertigteile und auch mit entsprechend positionierten Transportankern ausgerüstete Betonfertigteile.The device also relates to a method for positioning transport anchors in formwork for precast concrete elements and also with precast concrete elements equipped with appropriately positioned transport anchors.
Vorrichtungen zur Positionierung von Transportankern in Schalungen sind beispielsweise als sogenannte "Nagelteller" bekannt. Ein solcher bekannter Nagelteller hat typischerweise zwei parallele Seitenflächen, wobei an einer der Seitenflächen ein Ansatz zum dichten Verbinden mit dem Verbindungsabschnitt eines Transportankers vorgesehen ist. Der Ansatz am Nagelteller wird mit dem Verbindungsabschnitt eines Transportanker derart verbunden, so dass der Transportanker sich senkrecht von einer der entsprechenden innenliegenden Fläche des Nageltellers in das Innere der Schalung erstreckt. Dieser Nagelteller wird dann mit der gegenüberliegenden Seite an der Innenseite einer Schalung angeordnet, und zwar dort, wo man den Transportanker in einem Betonfertigteil zugänglich haben möchte, und an der Schalung fixiert.Devices for positioning of transport anchors in formwork are known for example as so-called "nail plate". Such a known nail plate typically has two parallel side surfaces, wherein on one of the side surfaces an approach for tight connection with the connecting portion of a transport anchor is provided. The approach to the nail plate is connected to the connecting portion of a transport anchor such that the transport anchor extends perpendicularly from one of the corresponding inner surface of the nail plate into the interior of the formwork. This nail plate is then arranged with the opposite side on the inside of a formwork, namely where you want to have the transport anchor in a precast concrete part, and fixed to the formwork.
Hierzu wird der im Wesentlichen plattenförmige Teller zum Beispiel an die Schalung angenagelt. Der Transportanker erstreckt sich dann im Wesentlichen senkrecht zu der Innenfläche der Schalung in den Raum hinein, der später von Betonmaterial ausgefüllt ist. Nach dem Aushärten des Betons und Entfernen der Schalung wird der Nagelteller ebenfalls abgerissen oder auch getrennt entfernt, wenn er an einer Außenfläche des Betonfertigteils freiliegt. Der Verbindungsabschnitt des Transportankers, der zuvor mit dem entsprechenden Ansatz am Nagelteller verbunden war, ist dann von außen zugänglich, so dass entsprechende Anschlagmittel für den Transport des Betonfertigteils an dem Verbindungsabschnitt angebracht werden können. Der Verbindungsabschnitt kann verschiedene Formen annehmen und ist zum Beispiel als Kugelkopf oder als Hülse mit Innengewinde ausgebildet, könnte aber auch ein Gewindebolzen mit Außengewinde oder ein sonstiges Verbindungselement sein. Das Ankerteil ist mit einem Ende des Verbindungsabschnittes fest verbunden und besteht zum Beispiel aus einem oder mehreren Drahtseilabschnitten oder einer Drahtseilschlaufe. in allen Fällen ist das Ankerteil bewusst als ein längliches Element ausgebildet dass sich entsprechend tief in den Beton hinein erstrecken kann und welches eine entsprechende Längsachse definiert. Anstelle eines Drahtseiles könnte der Transportanker auch ein Stück Bewehrungsstahl aufweisen, an dessen einem Ende ein Verbindungshülse oder ein Kugelkopf angebracht ist.For this purpose, the substantially plate-shaped plate is nailed to the formwork, for example. The transport anchor then extends substantially perpendicular to the inner surface of the formwork into the space, which is later filled by concrete material. After curing of the concrete and removing the formwork, the nail plate is also demolished or removed separately when it is exposed on an outer surface of the precast concrete part. The connecting portion of the transport anchor, which was previously connected to the corresponding approach to the nail plate, is then accessible from the outside, so that corresponding stop means for the transport of the precast concrete part can be attached to the connecting portion. The connecting portion may take various forms and is formed for example as a ball head or as a sleeve with internal thread, but could also be a threaded bolt with external thread or other connecting element. The anchor part is fixedly connected to one end of the connecting portion and consists for example of one or more wire rope sections or a wire rope loop. In all cases, the anchor part is consciously designed as an elongate element that can extend correspondingly deep into the concrete and which defines a corresponding longitudinal axis. Instead of a wire rope of the transport anchor could also have a piece of reinforcing steel, at one end of a connecting sleeve or a ball head is attached.
Üblicherweise hat ein Betonfertigteil, wie zum Beispiel ein Wandelement, entlang einer Randfläche zwei derartige Transportanker beiderseits einer Schwerpunktebene des Fertigteils und im Abstand voneinander. Der Abstand der Transportanker soll ein Schaukeln und/oder Drehen des Betonfertigteils am Kranhaken vermeiden. Ein Gewindezapfen der mit einer Transportöse versehen oder direkt an einem Tragseil angebracht ist, wird dann beispielsweise in den Gewindeabschnitt jedes der Transportanker eingeschraubt bzw., wenn es sich bei dem Gewindeabschnitt um ein Außengewinde handelt, auf dieses aufgeschraubt. Im Falle von Ösen wird dann ein Transportseil eingehängt, so dass ein mit dem Seil verbundener Kran oder Kranhaken das Betonfertigteil anheben kann.Usually, a precast concrete part, such as a wall element, along an edge surface has two such transport anchors on both sides of a focal plane of the finished part and at a distance from each other. The distance between the transport anchor should avoid rocking and / or turning the precast concrete part on the crane hook. A threaded pin provided with a transport eyelet or attached directly to a support cable is then screwed into the threaded portion of each of the transport anchors, for example, or, if the threaded portion is an external thread, screwed onto this. In the case of eyelets then a transport rope is hung, so that connected to the rope crane or crane hook can lift the precast concrete.
Um eine unnötige Länge der Transportseile zu vermeiden, welche übermäßige Schwingungen verursachen könnten und auch die verfügbare Hubhöhe eines Krans unnötig begrenzen würden, ist das Seil oder sind die Seile, mit welchen die Verbindungsabschnitte über Anschläge oder Ösen mit einem Kranhaken verbunden sind, möglichst kurz, was bei zwei gleichzeitig mit dem Kranhaken verbundenen Transportankern in Abhängigkeit von dem Abstand zwischen diesen Transportankern zu einer entsprechenden Abwinkelung des Seiles oder der Seile relativ zu der betreffenden Randfläche des Betonfertigteils und relativ zu der Längsrichtung des Transportankers führt.In order to avoid an unnecessary length of the transport ropes, which could cause excessive vibrations and would also unnecessarily limit the available lifting height of a crane, the rope or the ropes with which the connecting sections are connected via stops or eyelets with a crane hook, as short as possible, which, in the case of two transport anchors connected simultaneously with the crane hook, results in a corresponding angling of the cable or cables relative to the relevant edge surface of the precast concrete element and relative to the longitudinal direction of the transport anchor, depending on the distance between these transport anchors.
Im Ergebnis werden somit neben der vertikalen Traglast auch Querkräfte, d.h. quer zur Achse des Transportankers wirkende Kräfte vom Tragseil auf den Transportanker übertragen, was wiederum zu einem teilweisen Ausbruch des den Verbindungsabschnitt umgebenden Betons führen kann und die Tragfähigkeit des Transportankers beeinträchtigt. Die zulässigen Zugwinkel der Tragseile relativ zu der Oberfläche des Fertigteils und auch relativ zur Achse des Verbindungsabschnitts sind deshalb begrenzt. Zusätzliche Maßnahmen zur Vermeidung des teilweisen Betonausbruches, wie zum Beispiel die Ertüchtigung des Betons durch das Einlegen von Bügeln aus Betonstahl mit direktem Kontakt zum Anker, sind ansonsten zwingend erforderlich. Transportanker dürfen an dem Betonteil auch nicht zu dicht nebeneinander angeordnet werden, weil sich ansonsten das Betonfertigteil, wenn es am Kranhaken hängt, sehr leicht drehen oder verformen und in Schwingungen geraten könnte.As a result, in addition to the vertical load and lateral forces, ie acting transversely to the axis of the transport anchor forces transmitted from the support cable to the lifting anchor, which in turn can lead to a partial outbreak of the connecting portion surrounding concrete and impairs the carrying capacity of the transport anchor. The allowable draw angles of the support ropes relative to the surface of the finished part and also relative to the axis of the connection portion are therefore limited. Additional measures to avoid the partial outbreak of concrete, such as the upgrading of the concrete by inserting ironing of reinforcing steel with direct contact to the anchor, are otherwise mandatory. Transport anchors are allowed at the Concrete part not too close together, because otherwise the precast concrete part, if it hangs on the crane hook, could easily turn or deform and get into vibration.
In der Praxis lässt es sich also kaum vermeiden, dass die Transportseile unter einem Winkel relativ zur Oberfläche eines Betonfertigteils angreifen, der von der Achse des Ankerabschnitts, welcher sich herkömmlich senkrecht zu der Betonoberfläche erstreckt, deutlich abweicht, typischerweise um einen Wert von bis zu ca. 30°.In practice, therefore, it can hardly be avoided that the transport ropes engage at an angle relative to the surface of a precast concrete part, which deviates significantly from the axis of the anchor section, which extends conventionally perpendicular to the concrete surface, typically by a value of up to approx 30 °.
Die vorliegende Erfindung hat sich gegenüber diesem Stand der Technik zum Ziel gesetzt, Transportanker in einem Betonfertigteil derart zu positionieren, dass die auf den Transportanker bzw. dessen Verbindungsabschnitt wirkenden Querkräfte deutlich reduziert sind und will daher eine entsprechend verbesserte Vorrichtung zum Positionieren von Transportankern in einer Schalung für Betonfertigteile und damit eine bessere Positionierung der Transportanker in den Betonfertigteilen bereitstellen.The object of the present invention is to position the transport anchor in a precast concrete part in such a way that the transverse forces acting on the transport anchor or its connecting section are significantly reduced and therefore wants a correspondingly improved device for positioning transport anchors in a formwork For precast concrete parts and thus provide a better positioning of the transport anchor in the precast concrete parts.
Diese Aufgabe wird hinsichtlich der eingangs genannten Vorrichtung dadurch gelöst, dass bei einem in Montageposition ausgerichteten Aussparungskörper die Achse des Ankerabschnitts mit der mit einer Schalungswand dicht zu verbindenden Fläche eines entsprechenden Aussparungskörpers unter einem Winkel von weniger als 90° geneigt verläuft.This object is achieved in terms of the aforementioned device, characterized in that in an aligned in the mounting position recess body, the axis of the anchor portion is inclined with the shuttering with a formwork wall surface of a corresponding recess body at an angle of less than 90 °.
Die Achse des Ankerabschnitts, die Längsrichtung oder Achse des Transportankers und - falls vorhanden - die Achse eines Gewindeabschnitts des Transportankers sind identisch bzw. fallen zusammen und werden hier synonym verwendet. Auch bei Verwendung eines Kugelkopfes als Verbindungsabschnitt verläuft diese Achse im Allgemeinen entlang einer Symmetrieachse des Kugelkopfes.The axis of the anchor portion, the longitudinal direction or axis of the lifting anchor and - if present - the axis of a threaded portion of the lifting anchor are identical or coincide and are used synonymously. Even when using a ball head as a connecting portion of this axis is generally along an axis of symmetry of the ball head.
Im Rahmen der vorliegenden Erfindung die Verbindung zwischen den einzelnen Elementen dann als dicht bezeichnet, wenn sie gegenüber Beton bzw. gegenüber Betonmilch dicht ist. Dabei besteht eine höhere Dichtigkeitsanforderung bei der Verbindung zwischen dem Aussparungskörper und dem Verbindungsabschnitt des Transportankers als bei der Verbindung des Aussparungskörpers mit der Schalungswand, bei welchem das Eindringen von etwas Betonmilch zwischen Aussparungskörper und Schalungsinnenseite nicht stören würde. Ein Kugelkopf oder das Gewinde eines Gewindeabschnitts sollte jedoch vor jeglicher Verschmutzung und einer Beaufschlagung mit Beton oder Betonmilch geschützt sein, um eine sichere und funktionsfähige Verbindung mit einem Lastaufnahmemittel sicherzustellen.In the context of the present invention, the connection between the individual elements is referred to as dense when it is tight to concrete or to concrete milk. In this case, there is a higher density requirement in the connection between the recess body and the connecting portion of the transport anchor as in the connection of the recess body with the formwork wall, in which the penetration of some concrete milk between recess body and formwork inside would not interfere. However, a ball head or threaded portion of a threaded portion should be protected from any contamination and exposure to concrete or concrete milk to ensure a secure and functional connection with a load handler.
Aufgrund der Neigung des mit dem Aussparungskörper verbundenen Verbindungsabschnitts kann die Vorrichtung innerhalb eines Betonfertigteils so angeordnet werden, dass eine der Flächen des Aussparungskörpers dicht mit einer Schalungsinnenseite bzw. einem zwischengeschalteten weiteren Aussparungskörper verbunden ist, während die Ankerabschnitte benachbarter Transportanker eines Betonfertigteils aufeinander zu geneigt sind, d.h. dass die Achsen der Ankerabschnitte jeweils in Richtung des anderen, benachbarten Transportankers geneigt verlaufen.Due to the inclination of the connecting portion connected to the recess body, the apparatus can be arranged within a precast concrete part such that one of the surfaces of the recess body is tightly connected to a shell inner side or an intermediate further recess body, while the anchor portions of adjacent lifting anchors of a precast concrete member are inclined toward each other, ie that the axes of the anchor sections each inclined in the direction of the other, adjacent transport anchor.
Werden dann beide Transportanker des fertigen Betonteils an demselben Kranhaken entweder mit einem durchgängigen Seil oder über zwei getrennte Seile aufgehängt, so weicht die Zugrichtung dieser Seile von der Richtung der Achse der Transportanker um einen kleineren Winkel ab als gegenüber einer Senkrechten zu der betreffenden Betonfläche, die der Richtung der Achse des Ankerabschnitts bei herkömmlich eingebauten Transportankern entspricht. Konkret wird der Winkel zwischen der Zugrichtung des Transportseiles gegenüber der Achsrichtung des Ankerabschnittes im Vergleich zu einer standardmäßigen Anordnung der Transportanker jeweils um den Neigungswinkel des Transportankers vermindert, der durch die Vorrichtung zur Positionierung des Transportankers gemäß der vorliegenden Erfindung eingestellt wird. Der Winkel relativ zu der Oberfläche des Betonfertigteils sollte zwischen 50° und 85°, vorzugsweise zwischen 70° und 80° und insbesondere bei etwa 75° liegen. Dementsprechend beträgt die Neigung der Achse des Ankerabschnitts relativ zu einer Senkrechten auf die zugehörige Fläche (von welcher aus der Verbindungsabschnitt zugänglich ist)zwischen 5° und 40 °, Vorzugsweise zwischen 10° und 20 ° und insbesondere etwa 15°.If both lifting anchors of the finished concrete part are then hung on the same crane hook either with a continuous rope or two separate ropes, the pulling direction of these ropes deviates from the direction of the axis of the lifting anchor by a smaller angle than with respect to a vertical to the respective concrete surface, the the direction of the axis of the anchor portion in conventionally installed transport anchors corresponds. Concretely, the angle between the pulling direction of the transporting member with respect to the armature portion axial direction is reduced by the inclining angle of the transporting anchor set by the positioning armature positioning device according to the present invention compared to a standard arrangement of the transporting anchors. The angle relative to the surface of the precast concrete part should be between 50 ° and 85 °, preferably between 70 ° and 80 ° and in particular about 75 °. Accordingly, the inclination of the axis of the anchor portion relative to a perpendicular to the associated surface (from which the connecting portion is accessible) between 5 ° and 40 °, preferably between 10 ° and 20 ° and in particular about 15 °.
Werden dann Tragseile mit einer Länge verwendet, die bei dem gegebenen Abstand der Transportanker zu einem Winkel zwischen Tragseil und einer Senkrechten zur Betonfläche von etwa 30° führen, so halbiert die Achse des Ankerabschnittes des Transportankers diesen Winkel und der Unterschied zwischen der Zugrichtung des Tragseiles und der Achse des Ankerabschnittes beträgt dann nur 15° statt 30°, so dass die entsprechende Querkraft deutlich vermindert wird.Are then supporting cables used with a length that lead at the given distance of the transport anchor to an angle between the support cable and a vertical to the concrete surface of about 30 °, then halved the axis of the anchor portion of the transport anchor this angle and the difference between the pulling direction of the support cable and The axis of the anchor portion is then only 15 ° instead of 30 °, so that the corresponding lateral force is significantly reduced.
Der Aussparungskörper wird als solcher bezeichnet, weil er nach dem Gießen eines Betonfertigteils und vor und gegebenenfalls auch nach dem Entfernen der Schalung bündig in einer Betonoberfläche liegt, aus der er noch entfernt werden muss, so dass danach in der Betonoberfläche eine Aussparung verbleibt, deren Volumen zuvor von dem Aussparungskörper in Anspruch genommen wurde und an deren Grund der Verbindungsabschnitt des Transportankers zugänglich ist.The recess body is referred to as such, because it is flush after pouring a precast concrete and before and possibly after removal of the formwork in a concrete surface from which it still needs to be removed, so that thereafter a recess remains in the concrete surface whose volume previously occupied by the recess body and at the bottom of the connecting portion of the transport anchor is accessible.
In einer Variante der Erfindung ist der Aussparungskörper als Nagelteller ausgebildet, der zwei gegenüberliegende Flächen aufweist, die allerdings nicht parallel zueinander, sondern vorzugsweise unter einem Winkel von 15° ± 5° relativ zueinander geneigt sind.In a variant of the invention, the recess body is designed as a nail plate, which has two opposite surfaces, but not parallel to each other, but preferably at an angle of 15 ° ± 5 ° are inclined relative to each other.
Die dem Verbindungsabschnitt zugewandte Fläche des Aussparungskörpers weist gemäß einer Ausführungsform der Erfindung ein zu dem Verbindungsabschnitt passendes Aufnahmeelement, wie zum Beispiel einen Gewindestutzen auf. Je nachdem, ob der Gewindeabschnitt des Transportankers ein Innengewinde oder ein Außengewinde aufweist, ist dementsprechend der Gewindestutzen am Aussparungskörper entweder ein Gewindebolzen mit Außengewinde oder eine Gewindehülse mit Innengewinde. Bei einem Kugelkopf wird eine entsprechende Kugelkopfpfanne als Aufnahmeelement verwendet.The surface of the recess body facing the connection section has, according to an embodiment of the invention, a receiving element which fits the connection section, for example a threaded connection. Depending on whether the threaded portion of the transport anchor has an internal thread or an external thread, accordingly, the threaded connector on the recess body either a threaded bolt with external thread or a threaded sleeve with internal thread. In a ball head, a corresponding ball socket is used as a receiving element.
In einer Ausführungsform der Erfindung weist der Aussparungskörper zwei gegenüberliegende ebene Flächen auf, die zueinander geneigt und durch eine umlaufende Randfläche miteinander verbunden sind.In one embodiment of the invention, the recess body on two opposite planar surfaces, which are inclined to each other and connected by a peripheral edge surface.
Besonders zweckmäßig ist es, wenn die umlaufende Randfläche einen Teil einer rotationssymmetrischen Fläche bildet, denn dies bedeutet, dass der Aussparungskörper in der in dem Beton gebildeten Aussparung gedreht werden kann und sich damit leichter aus dieser Aussparung entfernen lässt. Zweckmäßigerweise ist die rotationssymmetrische Fläche eine Kugelfläche oder eine Konusfläche, wobei aber die Randfläche an dem Aussparungskörper im Allgemeinen nicht mehr rotationssymmetrisch ist, da sie entlang Ihres Umfangs eine variierende Breite haben kann.It is particularly useful when the peripheral edge surface forms part of a rotationally symmetrical surface, because this means that the recess body can be rotated in the recess formed in the concrete and thus can be easily removed from this recess. Conveniently, the rotationally symmetric surface is a spherical surface or a conical surface, but the edge surface on the recess body is generally no longer rotationally symmetrical, since it may have a varying width along its circumference.
Wenn der Aussparungskörper eine Gewindehülse als Verbindungsabschnitt und an seiner der Gewindehülse zugewandten Fläche einen Gewindestutzen aufweist, sollte dieser sich entlang der Achse der durch die Randfläche definierten rotationssymmetrischen Fläche erstrecken, so dass er in einfacher Weise durch Drehen des gesamten Aussparungskörpers von einem Gewindeabschnitt am Transportanker abgeschraubt werden kann. Da auch die Aussparung in dem Beton die Randfläche des Aussparungskörpers nachbildet und die Gewindeachse des Gewindeabschnittes und des Gewindestutzens am Aussparungskörper gleichzeitig die Symmetrieachse der zugehörigen Rotationsfläche ist, kann man den Aussparungskörper in der Betonaussparung drehen und somit den Aussparungskörper von dem Gewindeabschnitt lösen.If the recess body has a threaded sleeve as a connecting portion and on its threaded sleeve surface facing a threaded neck, this should extend along the axis defined by the edge surface rotationally symmetric surface, so that it is unscrewed in a simple manner by rotating the entire recess body of a threaded portion on the lifting anchor can be. Since the recess in the concrete simulates the edge surface of the recess body and the thread axis of the threaded portion and the threaded neck on the recess body is also the axis of symmetry of the associated surface of revolution, you can rotate the recess body in the concrete recess and thus solve the recess body of the threaded portion.
Hierzu ist es weiterhin zweckmäßig, wenn der Aussparungskörper auch ein Betätigungselement zum Lösen von dem Gewindeabschnitt des Transportankers aufweist. Beispielsweise könnte die obere Fläche eines Nageltellers eine Aussparung in Form eines Innensechskants aufweisen, die es ermöglicht, den Aussparungskörper mit Hilfe eines in den Innensechskant eingesetzten Werkzeuges (Inbusschlüssel) zu drehen und somit von dem Gewindeabschnitt zu lösen.For this purpose, it is further expedient if the recess body also has an actuating element for releasing the threaded portion of the transport anchor. For example, the upper surface of a nail plate could have a recess in the form of a hexagon socket, which makes it possible to rotate the recess body by means of a tool inserted into the hexagon socket (Allen key) and thus to be released from the threaded portion.
Weiterhin ist es zweckmäßig, wenn der Aussparungskörper eine Markierung aufweist, welche die Ebene eines maximalen Winkels zwischen oberer Fläche und unterer Fläche des Nageltellers anzeigt. Auf diese Weise ist es einfacher möglich, den Aussparungskörper in der gewünschten Richtung, d. h. mit maximaler Neigung in Richtung eines benachbarten Transportankers, an einer Schalung zu positionieren.Furthermore, it is expedient if the recess body has a marking which indicates the plane of a maximum angle between the upper surface and the lower surface of the nail plate. In this way it is easier possible to position the recess body in the desired direction, ie with maximum inclination in the direction of a neighboring transport anchor on a formwork.
In einer Variante der vorliegenden Erfindung liegt der Aussparungskörper, der mit dem Gewindeabschnitt dicht verbunden ist, nicht unmittelbar an der Innenfläche einer Schalung an, sondern stattdessen an einer Seite eines keilförmigen weiteren Aussparungskörpers, welcher seinerseits an der Innenfläche der Schalung anliegt. Der erstgenannte Aussparungskörper kann dann symmetrisch ausgebildet sein und zentral mit dem Gewindeabschnitt des Transportankers dicht verbunden werden, wobei die gewünschte Neigung des Transportankers dadurch gewährleistet wird, dass zusätzlich ein Keil als weiterer Verdrängungskörper verwendet wird, an dessen einer Seite der erstgenannte Aussparungskörper anliegt und dessen andere Seite mit der Innenwand der Schalung dicht verbunden ist.In a variant of the present invention, the recess body, which is tightly connected to the threaded portion, not directly on the inner surface of a formwork, but instead on one side of a wedge-shaped further recess body, which in turn rests against the inner surface of the formwork. The former recess body can then be formed symmetrically and are tightly connected centrally with the threaded portion of the transport anchor, wherein the desired inclination of the transport anchor is ensured by additionally a wedge is used as another displacement body, on one side of the first-mentioned recess body is applied and the other Side is tightly connected to the inner wall of the formwork.
In einer Ausführungsform wird ein Transportanker mit Kugelkopf verwendet. auch im Übrigen hat der Aussparungskörper insgesamt die Form einer Kugelkappe, wobei die Kugelkappe die Kappe einer Hohlkugel oder auch einer Vollkugel sein kann, wobei der kugelkopfartige Kopf des Transportankers mit einer Kugelpfanne im Zenit der Kugelkappe dicht verbunden ist.In one embodiment, a transport anchor with ball head is used. In addition, the recess body as a whole has the form of a ball cap, wherein the ball cap may be the cap of a hollow ball or a solid ball, the ball-head of the transport anchor is sealed to a ball socket in the zenith of the ball cap.
Die Erfindung betrifft auch ein Betonfertigteil mit Transportankern, wobei die Transportanker einen Ankerabschnitt und einen Verbindungsabschnitt in Verlängerung des Ankerabschnittes aufweisen, und wobei die Achsen der Ankerabschnitte zweier benachbarter Transportanker aufeinander zu geneigt sind.The invention also relates to a precast concrete element with transport anchors, wherein the transport anchors have an anchor portion and a connecting portion in extension of the anchor portion, and wherein the axes of the anchor portions of two adjacent transport anchors are inclined towards each other.
Schließlich betrifft die vorliegende Erfindung auch ein Verfahren zum Herstellen eines entsprechenden Betonteils, bei welchem der Gewindeabschnitt eines Betonteils derart an einer Fläche eines Aussparungskörpers abgedichtet befestigt wird, dass nach einer dichten direkten oder indirekten Verbindung des Aussparungskörpers mit der zugeordneten Schalungswand die Achse des Gewindeabschnittes gegenüber einer Senkrechten zur Schalungswand geneigt verläuft. Die Positionierung des Transportankers erfolgt dabei mit den oben beschriebenen Mittel bzw. Aussparungskörpern. die hier angesprochene Schalungswand ist hier immer der Teil der Schalung, an dem der Aussparungskörper dicht anliegtFinally, the present invention also relates to a method for producing a corresponding concrete part, in which the threaded portion of a concrete part is sealed to a surface of a recess body secured such that after a dense direct or indirect connection of the recess body with the associated shuttering wall, the axis of the threaded portion relative to a Vertical runs inclined to the formwork wall. The positioning of the transport anchor is carried out with the above-described means or Aussparungskörpern. the formwork wall mentioned here is always the part of the formwork to which the recess body bears tightly
Das Verfahren zum Herstellen eines Betonfertigteils mit mindestens einem eingegossenen Transportanker , welcher einen Ankerabschnitt und einen daran anschließenden Verbindungsabschnitt aufweist, ist insbesondere dadurch gekennzeichnet, dass eine Vorrichtung nach einem der Ansprüche 1 bis 14 verwendet wird, um einen Transportanker in einer Schalung für das Betonfertigteils in einer Ausrichtung relativ zu einer Oberfläche des Betonfertigteils derart zu positionieren, dass die Achse des Transportankers relativ zu einer Senkrechten auf die Oberfläche des Betonfertigteils geneigt verläuft.The method for producing a precast concrete part with at least one cast-in lifting anchor, which has an anchor portion and an adjoining connecting portion, is in particular characterized in that a device according to one of claims 1 to 14 is used to a transport anchor in a formwork for the precast concrete part in an orientation relative to a surface of the precast concrete part so to position that the axis of the transport anchor is inclined relative to a perpendicular to the surface of the precast concrete part.
In einer weiteren Ausgestaltung des Verfahrens ist vorgesehen, dass mindestens zwei Transportanker in der Schalung derart positioniert werden, dass die Achsen der Gewindeabschnitte jeweils zweier Transportanker auf einander zu geneigt sind.In a further embodiment of the method it is provided that at least two lifting anchors are positioned in the formwork such that the axes of the threaded sections of each two lifting anchors are inclined towards each other.
Ein Betonfertigteil gemäß der vorliegenden Erfindung, mit mindestens einer Oberfläche an welcher in das Betonfertigteil einbetonierte Transportanker zugänglich sind, ist dadurch gekennzeichnet, dass die betreffende Oberfläche des Betonfertigteils mindestens eine Aussparung aufweist, die eine zu der Oberfläche um einen Winkel geneigte Grundfläche hat, von welcher aus ein Verbindungsabschnitt eines Transportankers zugänglich ist, wobei die Längsachse des Transportankers bzw. des Ankerteils desselben sich senkrecht zu der Grundfläche der Aussparung erstreckt.A precast concrete element according to the present invention, with at least one surface on which transport anchors embedded in the precast concrete element are accessible, is characterized in that the relevant surface of the precast concrete element has at least one recess which has an area inclined at an angle to the surface, of which from a connecting portion of a transport anchor is accessible, wherein the longitudinal axis of the transport armature or the armature part thereof extends perpendicular to the base surface of the recess.
Die gegenüber einer Oberfläche eines Betonfertigteils geneigte Grundfläche einer Aussparung in dieser Oberfläche, von der aus ein Transportanker sich senkrecht zu der Grundfläche in den Beton hinein erstreckt, ist ein Charakteristikum für die Verwendung der erfindungsgemäßen Positioniervorrichtung und die damit erzeugten Produkte. Die Neigung der Grundfläche der Aussparung gegenüber der jeweiligen Oberfläche ist im Prinzip beliebig wählbar und kann zwischen zum Beispiel zwischen 5° und 50° beliebig gewählt werden, wobei sich aber ein Winkel zwischen 10° und 20°, insbesondere von 15°, für die meisten Anwendungsfälle als sehr zweckmäßig erwiesen hat.The base surface of a recess in this surface, which is inclined relative to a surface of a precast concrete part and from which a lifting anchor extends perpendicularly to the base surface into the concrete, is a characteristic for the use of the positioning device according to the invention and the products produced therewith. The inclination of the base of the recess relative to the respective surface is in principle arbitrary and can be chosen between, for example, between 5 ° and 50 °, but with an angle between 10 ° and 20 °, in particular 15 °, for most Use cases has proved to be very useful.
Insbesondere ist gemäß einer Ausführungsform vorgesehen, dass mindestens eine Oberfläche des Betonfertigteils mindestens zwei Aussparungen aufweist, deren Grundflächen in zueinander entgegengesetzten Richtungen und aufeinander zu geneigt sind.In particular, it is provided according to an embodiment that at least one surface of the precast concrete part has at least two recesses whose base surfaces are inclined in mutually opposite directions and towards each other.
Weiterhin ist gemäß einer Ausführungsform der Gewindeabschnitt eine Gewindehülse, deren freie Stirnfläche mit dem Grund der Aussparung bündig abschließt.Furthermore, according to one embodiment, the threaded portion is a threaded sleeve whose free end face is flush with the bottom of the recess.
Weitere Vorteile, Merkmale und Anwendungsmöglichkeiten der vorliegenden Erfindung werden deutlich anhand der folgenden Beschreibung einer bevorzugten Ausführungsform und der dazugehörigen Figuren. Es zeigen:
- Figur 1
- schematisch eine Seitenansicht eines Betonfertigteils mit darin unter einem Neigungswinkel angeordneten Transportankern,
- Figur 2
- eine Transportsituation mit einem Tragseil an einem Kranhaken,
Figur 3- eine Transportsituation mit Aufhängung an einem Tragbalken,
Figur 4- einen Nagelteller gemäß einer Ausführungsform der Erfindung in einer Ansicht von unten,
Figur 5- eine Schnittansicht des Nageltellers aus
Figur 4 gemäß der Schnittlinie V-V, - Figur 6
- eine Ansicht auf den
Nagelteller nach Figur 4 von oben, Figur 7- eine weitere schematische Ansicht eines Abschnitts eines Betonfertigteils mit zwei verschiedenen Aussparungskörpern,
Figur 8- eine perspektivische Ansicht der Ausführungsform gemäß
Figur 7 , und Figur 9- einen mit dem Gewindestutzen eines Nageltellers verschraubten Transportanker.
- FIG. 1
- FIG. 2 schematically a side view of a precast concrete element with transport anchors arranged at an angle of inclination, FIG.
- FIG. 2
- a transport situation with a carrying rope on a crane hook,
- FIG. 3
- a transport situation with suspension on a supporting beam,
- FIG. 4
- a nail plate according to an embodiment of the invention in a view from below,
- FIG. 5
- a sectional view of the nail plate
FIG. 4 according to the section line VV, - FIG. 6
- a view of the nail plate behind
FIG. 4 from above, - FIG. 7
- a further schematic view of a portion of a precast concrete part with two different Aussparkörpern,
- FIG. 8
- a perspective view of the embodiment according to
FIG. 7 , and - FIG. 9
- a bolted to the threaded neck of a nail plate transport anchor.
Gemäß
Der Neigungswinkel der Transportanker 1, deren Längsrichtung durch die Erstreckung der Achse 50 des Gewindeabschnitts 21' definiert wird, beträgt gegenüber einer Senkrechten zu der Randfläche 32 in den Figuren 15°. In der in
Die Zugrichtung (60° zur Randfläche 32) kann vorab festgelegt werden durch Auswahl einer bestimmten Seillänge und die Festlegung eines bestimmten Abstandes der Transportanker auf der Randfläche 32.The pulling direction (60 ° to the edge surface 32) can be determined in advance by selecting a specific cable length and the determination of a certain distance of the lifting anchors on the edge surface 32nd
Auch hier verlaufen die Tragseile 40 gegenüber der Achsrichtung des Gewindeabschnittes nur um 15° geneigt, so dass auch in dieser Tragsituation nur sehr geringe Querkräfte auftreten.Again, the
Die
Die
Alle hier dargestellten Betonteile weisen nach ihrer Fertigstellung auf mindestens einer ihrer Randflächen 30 eine bzw. mehrere Aussparungen 31 auf, deren Grundfläche, die dadurch definiert ist dass sie den Zugang zu einem Verbindungsabschnitt eines Transportankers bietet, gegenüber der Randfläche 32 geneigt ist wobei die Längsachse 50 des Transportankers senkrecht zu der Grundfläche der Aussparung verläuft.After completion, all of the concrete parts shown here have at least one of their edge surfaces 30 one or
Claims (15)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE202018102682.8U DE202018102682U1 (en) | 2018-05-14 | 2018-05-14 | Device for positioning a transport anchor |
Publications (2)
Publication Number | Publication Date |
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EP3569795A1 true EP3569795A1 (en) | 2019-11-20 |
EP3569795B1 EP3569795B1 (en) | 2022-11-02 |
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Application Number | Title | Priority Date | Filing Date |
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EP19173073.8A Active EP3569795B1 (en) | 2018-05-14 | 2019-05-07 | Device for positioning a transport anchor |
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EP (1) | EP3569795B1 (en) |
DE (1) | DE202018102682U1 (en) |
PL (1) | PL3569795T3 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111676817A (en) * | 2020-06-01 | 2020-09-18 | 中铁八局集团第二工程有限公司 | Construction method of pier column type bridge upright column movable cable rope device |
DE202022001002U1 (en) | 2022-04-26 | 2022-06-20 | Armin Blessing | Stop for craning panel-shaped components |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110952787A (en) * | 2019-12-27 | 2020-04-03 | 重庆大学 | Novel precast concrete component hoisting point embedded part system |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2339265A1 (en) * | 1973-08-02 | 1975-02-20 | Moll Kg Leonhard | Formwork clamp anchor recesses for stressed concrete units - with one form body rotatable relative to form wall, and second relative to first |
US4443980A (en) * | 1981-03-19 | 1984-04-24 | Pennsylvania Insert Corporation | Pulling iron enclosure |
DE20118873U1 (en) * | 2001-11-21 | 2003-01-09 | Lammering, Martina, 33335 Gütersloh | Transport tanker or anchor casing with chip unit, for data logging or identification, has integrated microelectronic device mounted in plastics material package located in recess |
DE202004007467U1 (en) * | 2004-05-10 | 2004-07-08 | Pfeifer Holding Gmbh & Co. Kg | Device for lifting concrete parts |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4888922A (en) * | 1988-08-15 | 1989-12-26 | Richmond Screw Anchor Co., Inc. | Setting hoist anchors in poured concrete structures |
EP2088112A1 (en) * | 2008-02-08 | 2009-08-12 | Marcel Arteon | Anchor for supporting construction elements on supported diverging branches |
-
2018
- 2018-05-14 DE DE202018102682.8U patent/DE202018102682U1/en active Active
-
2019
- 2019-05-07 EP EP19173073.8A patent/EP3569795B1/en active Active
- 2019-05-07 PL PL19173073.8T patent/PL3569795T3/en unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2339265A1 (en) * | 1973-08-02 | 1975-02-20 | Moll Kg Leonhard | Formwork clamp anchor recesses for stressed concrete units - with one form body rotatable relative to form wall, and second relative to first |
US4443980A (en) * | 1981-03-19 | 1984-04-24 | Pennsylvania Insert Corporation | Pulling iron enclosure |
DE20118873U1 (en) * | 2001-11-21 | 2003-01-09 | Lammering, Martina, 33335 Gütersloh | Transport tanker or anchor casing with chip unit, for data logging or identification, has integrated microelectronic device mounted in plastics material package located in recess |
DE202004007467U1 (en) * | 2004-05-10 | 2004-07-08 | Pfeifer Holding Gmbh & Co. Kg | Device for lifting concrete parts |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111676817A (en) * | 2020-06-01 | 2020-09-18 | 中铁八局集团第二工程有限公司 | Construction method of pier column type bridge upright column movable cable rope device |
DE202022001002U1 (en) | 2022-04-26 | 2022-06-20 | Armin Blessing | Stop for craning panel-shaped components |
WO2023209434A1 (en) | 2022-04-26 | 2023-11-02 | Armin Blessing | Stop for craning plate-shaped construction elements |
Also Published As
Publication number | Publication date |
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EP3569795B1 (en) | 2022-11-02 |
DE202018102682U1 (en) | 2019-08-19 |
PL3569795T3 (en) | 2023-02-27 |
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