DE102017111469A1 - Double wall lifting anchor system with load bearing device - Google Patents

Abstract

Lifting device (1) for lifting anchors (2, 16, 17, 18, 19, 20), particularly suitable for transporting double or multiple concrete walls with opposed concrete shells (11a), the load receiving device (1) comprising at least one stop means (7 ), via which external means of transport can be brought into engagement, a bending-resistant load-receiving means (3) for coupling to a stop area (2a, 2b) of a transport anchor (2, 16, 17, 18, 19, 20), which with the stop means (7 ), a locking device (4), which is designed to hold the load receiving means (3) in engagement with the transport anchor (2, 16, 17, 18, 19, 20), characterized in that the load receiving means (3) has a recess or Receiving device (3a), wherein the shape, the contour or the course of the recess or receiving device (3a) wholly or partially for a system or an engagement in each case under positive engagement with or with the abutment region (2a, 2b) of the transport anchor (2, 16, 17, 18, 19, 20) is designed, and / or the recess or receiving device (3a) wholly or partially for forming a contact surface (3c) with the abutment region (2a , 2b) is designed.

Description

The invention relates to a load-receiving device according to the preamble of claim 1, which is particularly suitable for coupling with transport tankers for double or multiple concrete walls with opposite concrete shells. The transport anchor is provided with one or more opposite, each a concrete shell associated anchoring legs and with at least one stop means, via which the load receiving device can be brought into engagement. Furthermore, the invention relates to a double-walled transport anchor system, comprising a load-receiving device and a transport anchor according to the preamble of claim 9. Furthermore, the invention relates to an arrangement with a multiple concrete wall, comprising at least one introduced into the opposite concrete shells lifting anchor and a load receiving device, according to the preamble of Claim 16.

Reinforced concrete is due to its resilience a widespread building fabric, especially in bridges or large halls. Reinforced concrete consists of a steel framework, the so-called reinforcement cage, which is completely filled with concrete and covered. The tensile strength of the steel and the compressive strength of the concrete result in the high stability of this building substance.

The reinforced concrete for a component (for example, a wall piece or a bridge pillar piece) is produced by the reinforcement cage is assembled according to the specifications of a structural engineer, within a mold adapted to the shape of the component. This casing is then poured with concrete, which hardens in the casing. The production of these components can be carried out at the construction site at the place where the components are to be ultimately installed. The concrete (also called in-situ concrete) is delivered premixed by mixing vehicles. Alternatively, precast concrete elements (eg slabs, beams) can be prefabricated away from the construction site in a production hall. From this production hall, reinforced concrete components have to be lifted to their destination even with the help of cargo cranes. In order to facilitate this transport, transport devices, so-called lifting anchors, are poured into the reinforced concrete.

As appropriate, a combined reinforced concrete construction of in-situ concrete and precast concrete has proved. In a reinforced concrete wall, the inner layer and the outer layer of the wall are prefabricated as concrete formwork in the production hall. These two concrete formwork walls are connected by lattice girders. The result is a so-called double wall. At the construction site, the double wall is first lifted to its destination and then poured with in-situ concrete. With this method, high quality and accuracy of the mold can be ensured by the factory production of concrete shells. By pouring the shuttering (the so-called shuttering core) on the construction site with in-situ concrete, weight is saved when transporting the shuttering from the production hall to the construction site. As an alternative to concrete, the shuttering core could at least partially also consist of insulating material for the building insulation.

In order to transport a double wall, for example, with a crane (such as for loading on a truck), also corresponding transport anchors are cast in the double wall. These transport anchors must be suitable for loading in one direction parallel to the concrete shell wall (Axialzug), but also obliquely to the plane of the wall (diagonal pull). Also, cracking or chipping of the concrete from the wall or the concrete shells in the region of the transport anchor due to unfavorable force distribution in the precast concrete itself is undesirable.

Until now, these transport anchors are usually attached to a standard chain hook. If the double wall is already ready for transport, this usually works very well. When erecting such a double wall during production, but also during assembly of the double wall on the construction site, caused by the diagonal pull but again and again damage to the double wall that beat when erecting the double wall of the chain hook or the chain against the double wall shell. These impacts and impacts damage the concrete shell at the point of impact of the chain hook or chain.

From the prior art molded parts are known as load-receiving means for guiding the chain when lifting double-wall transport anchors ( EP 2826930 A1 ). A disadvantage of these already known devices is that the attachment point is designed for the stop means without stiffening. As a result, the attachment point has no support, neither in axial tension nor in diagonal pull. In addition, the load handling device is only possible in conjunction with a specially adapted lifting anchor.

The object of the present invention is to improve the prior art. To solve the problem specified in claim 1 load bearing device, the specified in claim 9 lifting anchor system and specified in claim 16 concrete wall / transport anchor arrangement proposed. optional, advantageous embodiments of the invention will become apparent from the dependent claims.

The invention is a lifting device for transport anchors, which is suitable for transporting double or multiple concrete walls with opposite concrete shells. Therefore, the load receiving device has a corresponding stop means, via which an external means of transport, for example a crane hook, a carabiner or a threaded sleeve can be coupled. According to the invention, the stop device can be connected to the abutment region of the transport anchor by means of a load-bearing means designed rigidly. With the stop region of the lifting anchor the load-receiving means is connected so motion-rigid that any rotational movement of the lifting device is prevented by the stop point and any translational movement relative to the attachment point. In this case, the load-receiving means is dimensioned so that the external transport means spaced apart from the stop area can be coupled. As a result of this spacing, the external means of transport need no longer or at least not so far be introduced into the intermediate space between the concrete shells of the double wall. As an advantageous effect of this spacing so that the chain or other devices of the external transport when erecting the double wall can no longer bump against the concrete shells. According to the invention, the movement-rigid connection between the load-receiving means and the attachment point of the transport anchor is realized in that the load-receiving means comprises a receiving device or depression which encloses at least partially positively the transport anchor in the adjacent region of the attachment point. The receiving device or depression can be designed as a mouth, milled, pocket, groove or similar recess. In this case, along the receiving device or depression, at least in partial regions, rich flat contacts are formed with the stop region of the transport anchor. This form-fitting is secured by a locking device or locking device, which completely encloses the transport anchor in the region of the attachment point and in subregions of the bracket adjacent to the attachment point together with the load-receiving means. Another advantage of this load-receiving device is that only the stop area of the lifting anchor must be adapted to the load-receiving means and the locking device. The shape of the legs and / or the transverse webs / push rods (which absorb the pressure forces when lifting the double wall) can be freely selected depending on the other requirements of the lifting anchor.

By the spacing, which is achieved by the load-receiving means between the anchorage point of the transport tanker and the stop means for the external means of transport, forms a lever arm between the stop means and the stop area of the transport tanker in horizontal position or inclined position of the double wall when engaging an external transport. The load handler must be shaped and provided with appropriate stiffeners to ensure operational safety in accordance with the necessary length of the lever arm. Thus, the lever arm is not too large, the anchor device should be just outside or just within the space of the double wall placeable.

The essential function of the locking device is to enclose the stop area of the transport anchor with a closed contour. In the context of a solution according to the invention, the locking device may comprise a locking bolt, which is pushed or pushed through a hole, pocket, recess or other depression in the load receiving means, that it supports the lifting anchor in the receptacle or recess provided therefor. The locking bolt itself is prevented from sliding out by a releasable locking pin in the load-carrying device. By this releasable locking pin, which is arranged transversely or obliquely adjustable in the locking bolt, the locking bolt can be axially locked.

In a further embodiment of the invention, the locking bolt forms with the bore, pocket, recess or other recess, a positive connection. In an alternative embodiment of the invention remains between locking bolt and load receiving means or between the load receiving means and the abutment portion of the lifting anchor a gap into which a wedge can be inserted or pressed in the assembled state. This wedge or other comparable locking device prevents unwanted displacements or rotations of the locking bolt in the load-carrying means.

In a further advantageous embodiment of the invention, the locking device may comprise the gripping mechanism or the locking mechanism of a sheet metal clamp. This spring-loaded gripping mechanism or locking mechanism is characterized in that with increased tensile load by lifting the double wall and the force of the lock increases. This makes a sheet metal clamp particularly reliable. Of course, the use of a sheet metal clamp includes that the jaw at least as far as in some areas form fit to the Stop region of the used transport anchor is adapted to prevent any rotational movement of the sheet clamp to the stop point and any translational movement relative to the attachment point.

An alternative locking device with spring-mounted assembly or disassembly aid of the locking bolt has a spring or spring device whose windings are wound around the locking bolt, so that the direction of action of the spring is aligned substantially parallel to a central axis of the locking device. The suspension can be formed both with a pressure and with a pulling action and should facilitate the insertion of the locking bolt during assembly into the load receiving means and / or the extraction of the locking bolt during disassembly out of the load receiving means. By this is meant, for example, a pulling out of a locking pin, with which the locking device is unlocked and a spring can pull the locking pin out of the load receiving means. The direction of displacement of the bolt is equal to the effective direction of the spring.

Another method of locking is characterized by a flap which is rotatably mounted about a hinge joint. Together with the receiving device or recess of the load-carrying means, the transport anchor is at least partially encompassed so far that any rotational movement of the load-receiving means is prevented by the stop point and any translational movement relative to the attachment point.

After the double wall has been lifted to its destination, the load handler must be unlocked to separate the load handler from the double wall transport anchor. To avoid accidents at work, it is undesirable in some countries also prohibited that unlocking a construction worker climbs up with a ladder on the raised double wall to manually unlock the load-bearing device. Therefore, it is expedient in the context of an optional development of the invention that the load-receiving device can be unlocked remotely and optionally also locked. This mechanism can be mechanically, electrically, pneumatically and / or hydraulically actuated, for example with the aid of electromagnetic or mechanical actuators.

Independent invention protection is claimed for a double-walled transport anchor system, comprising a load-receiving device according to the invention and at least one mating transport anchor, suitable for transporting a double wall. The components of the transport tanker (anchoring leg, cross bar / push bar, stirrups, spacers) may vary, adapted to the requirements and loads of the component.

According to the invention in the transport anchor a polygon, such as triangle or quadrangle, of strand material, such as flat steel or other reinforcing steel in strand or wire form, formed (stop polygonal), which is connected to the anchoring legs, for example, welded. An abutment corner is, possibly additionally reinforced, as a stop area, such as stop bracket, used or expanded to a stop area. By the corner naturally has two corner legs enclosing an angle, these two corner legs can contribute to increased stability of the stop area, in particular of the stop bracket, during transport.

To facilitate the installation of the transport anchor in the reinforcement of the double wall a horizontally aligned reinforcing bar is mounted at its anchor point. This reinforcing rod corresponds in its length to the horizontal extent of the lifting anchor and serves as a spacer or spacer device and guidance in the assembly of the transport tanker in the reinforcement cage of the double wall. When using such a reinforcing rod and the receiving device or depression, for example, the mouth, the recess, milled or pocket of the load receiving means must be adjusted so that the reinforcing bar of the spacer holding device forms a full-surface contact with the load receiving means.

According to the invention, the anchoring leg (s) are formed as part of an outer girth which forms an outer border, border or framing. The increase in transport stability caused by the outer belt can be further promoted by a symmetrical construction of the transport anchor, symmetrical, for example, with respect to a central axis; by a symmetrical design, a uniform load distribution is ensured for example on both sides of an axis of symmetry. According to an optional further development, the transport anchor is designed with a plurality of grid cells, which together form a grid structure in which the sides of the stop polygon form or delimit one of the grid cells. Due to the lattice structure with the arrangement of several elongated parts at least partially at regular intervals, an interaction of the forces can be achieved in the elongated parts or grid elements. As soon as a load is applied to the stop device, completely hit all grid elements and grid cells for uniform load acceptance. This results the advantage that in order to achieve a certain lifting and transport load capacity less strand material (eg structural or reinforcing steel) must be used. To further increase the transport stability, an upper upper belt and / or a lower lower belt are provided in the transport anchor according to an optional further development-seen in the transporting application under the action of gravity-which are respectively fixed to the anchoring arms. As a result, the load is distributed on more shoulders, so to speak. The said advantageous effects are also served by another optional embodiment, according to which the transport anchor is designed with an outer border or border which surrounds the stop polygon or in which the stop polygon lies. With particular advantage, in the context of an optional further development, the anchoring legs together with the upper flange and the lower flange can then form the outer border or border, which may then be an integral part of the lattice structure. The uniform load distribution also serves as an optional inventive development, according to which the grid cell forming the stop polygon is arranged together with the stop device within the grid structure at a central location, symmetrically with respect to at least one axis of the grid structure and / or in the center of the grid structure. The receiving device or recess of the load-receiving means is designed accordingly. It is within the scope of optional inventions further developments, if the grid structure comprises a plurality of 3-sided grid cells. In particular, the grid of the transport anchor can be designed in a unified design exclusively with 3-corner grid cells, which speeds up the manufacturing process and reduces manufacturing costs. A further, advantageous development is that the grid cell, which has the stop device and / or forms the stop polygonal, is designed quadrangular. An advantage achieved thereby is that thereby four lifting points for a load-handling device are available in the transport anchor according to the four corners of the stop square. In particular, if, in continuation of this idea, the outer border or surround of the transport anchor on two opposite parallel sides with concave areas, such as indentations in the outer border or enclosure or concave-polygonal corner areas, designed while other, opposite transport anchor outer sides are rectilinear or convex, the corresponding transport anchor can be used for two or more different wall thicknesses. This effect is also achieved when the outer contour of the transport anchor surrounding the stop square is oblong-rectangular, because then the transport anchor with different dimensions in length and width is available. The possibility for use for at least two different wall thicknesses is also promoted by running through diagonally opposite corner regions of the stop square symmetry axes. According to an optional development, the grid structure in the lifting anchor on two formed from the strand material, overturned polygons each with at least four convex corner areas. The polygons are arranged with each of two of their convex corner regions abutting each other and preferably welded there, that between the at least two overlapped polygons a polygonal, for example, square grid cell is formed as a stop polygonal. The latter grid cell or the latter stop polygon are provided with the at least one or more stop devices or stop corner areas. With this development can be easily and quickly form the abovementioned stop square and provide a transport anchor for the different wall thicknesses. In an embodiment of the transport anchor with lower flange, an optional further development consists in that the lower flange runs parallel or congruent or double-layered with one (lower) side of the stop polygon, with two adjoining layers of the strand material. This can create a two-ply design of the lower chord, resulting in a reinforced cross strut between the anchoring legs and thus increased transport stability. The resulting, two-ply cross strut / lower chord can thus absorb as pressure bar due to the correspondingly enlarged cross-section when lifting the concrete wall with the transport anchor resulting compressive forces to a greater extent. According to an optional further development, in which the transport anchor has a top flange or a corresponding spacer device, the stop region of the stop polygon is realized thereon or in it. This allows an (additional) stiffening of the stop area for the load-receiving device to be achieved and a deformation of the transport anchor when lifting with a concrete wall load is counteracted. Alternatively, the stop area or the corresponding corner area can be located as an attachment point of the stop polygonal path on a straight line defined by the upper belt (which, for example, forms an imaginary continuation of the upper belt and can also be used as a spacer) or on a strand section of the upper belt or attached to the latter. So can be achieved within the transport anchor increased stability of the attachment point for an external load handling device. In the context of the invention, the outer contour of the transport anchor can be varied. According to an optional development, the outer border or border may have a square, rectangular, polygonal, oval or round shape and / or be designed as a concave or convex polygon. A transport anchor can also be elongated Realize basic form, from which in connection with the above-mentioned stop square the applicability for different wall thicknesses can be realized. By a corresponding coupling of the load receiving means with each of the possible grid structures of the transport anchor described here, the rigidity of the double-wall transport anchor system and thus their reliability can be further improved.

In the context of optional invention developments, the transport anchor or at least the stop polygon is formed as a self-contained, at least partially polygonal line train. For example, areas, parts or portions of the transport anchor such as e.g. the outer border or border without corners, but be shaped round or oval. According to the invention, load-receiving means and locking mechanism are adapted to the outer shape or the surface contour of the transport anchor and increase the reliability of the double-walled transport anchor system by meshing as possible, encompassing and enclosing.

At least the polygonal formed areas or one, several or all corners of the transport anchor or at least one, several or all corners of the stop polygon are realized within the scope of an optional invention refinement by a respective weld connection abutting ends of sections or individual pieces of the strand material used. In terms of a rational and cost-effective manufacturability, an optional further development is that one, several or all corners of the stop polygon or the transport anchor, optionally including its outer border or border, formed by bending a respective section of the strand material and in particular with a bending radius are provided according to DIN standard 488. The bending radius ensures that tearing or breakage of the strand material of the transport anchor during transport of a double wall is counteracted. With particular advantage, the lifting anchor or its at least one stop polygon is made of a single piece of strand material. This makes it particularly easy to achieve by bending the desired shape, in particular a polygonal, open or closed path train in the strand material, but also rounded or oval sections for the transport anchor and also ensure a possible positive fit to the milled cut of the lifting device. The general inventive idea also includes the aforementioned arrangement with multiple concrete wall and inventive lifting anchor, wherein at least one concreted anchoring leg is brought into engagement with the reinforcement insert of the respective concrete shell such that when lifting this multiple concrete wall, the resulting forces on the lifting anchor, in particular its grid elements, are distributed to the reinforcement insert. According to an optional further development, the anchoring leg in the concrete shell is arranged at least partially on the side of the reinforcement insert facing away from a gap between the two concrete shells. According to the invention, the leg is anchored in the concrete shell in such a way that it is at least partially disposed on the side of the grid reinforcement facing away from the intermediate space of the double wall and in particular by any horizontal reinforcing bars (horizontal connector). This can be achieved, for example, by braiding the leg during the bending process or assembly process in the grid reinforcement, as it were sewn. This ensures that the forces that arise when lifting the double wall, for example by means of a load bearing device according to the invention, also spread over the grid reinforcement, which extends to the entire reinforced concrete component. The transport anchor in the grid reinforcement does not have to be secured separately. A simple locking against slipping when filling the reinforcement with concrete is quite sufficient. Advantageously, the force distribution according to the invention is initially for occupational safety, as this reduces the risk of poor installation of the transport anchor. By interweaving the transport anchor with the grid reinforcement a sufficient installation depth is guaranteed. Since the transport anchor according to the invention is no longer supported by the concrete cover alone, this may be lower. Thinner concrete shells are possible. As part of a pre-assembly and several of these double wall transport anchors can be braided in a first grid reinforcement and stored together with this in a grid pallet. Due to this particularly stable coupling of the transport anchor with the reinforcement of the concrete shells, the reliability is further improved to the effect that the risk of tearing the transport anchor from the concrete shell is minimized in a diagonal train, since now the load is borne by the entire reinforcement cage. The safety at work is also improved in that a top flange or a spacer forms together with the stop polygonal a stiffened compared to a previously known simple wire loop attachment point to prevent the already described breaking out of the legs of the concrete shell. The stiffened design of the attachment point in the stop polygam prevents its deformation and thus an undesirable burden of any cross brace. For stiffening the contact point of stop polygonal and upper chord / spacer is connected to each other, for example by welding. In an optional embodiment, the inventive lifting anchor made of a single bending wire. In this case, the bending wire is guided as an outer belt square, rectangular, circular or oval around the stop bracket of the stop polygonal so that the outer belt and stop bracket can lie in one plane. In this case, the outer belt or the outer border or border can be divided into different segments depending on the function. The segments of the outer belt, which are arranged adjacent to the stop polygonal serve, for example, as legs. The segment which is guided past above the stop polygonal and forms the stop point together with the stop polygonal, is for example the upper flange or the spacer. The segment which is guided below the stop polygonal and at least in some areas forms the cross member for receiving the compressive forces when lifting the double wall, for example, the lower flange. The segments which are cast laterally of the stop polygonal in the concrete shell, for example, the anchoring legs. If the transport anchor is finished bent and braided with the grid reinforcement, it can be welded to itself or with the grid reinforcement at least one point for a closed profile and / or a closed track train. Under certain circumstances, it may also be expedient to assemble transport anchors of several parts or several pieces and to set correspondingly more welding points.

With a single bending wire is limited to the simple choice of suitable shapes of geometric shapes for the stop bracket and the outer belt. In order to realize a transport anchor with more than one anchor point, offer outer straps or outer enclosure or borders with polygonal outer contour. As a result, a transport anchor with different attachment points for different purposes can be realized. However, transport anchors with asymmetrical outer contours can also be expedient, for example for concrete shells of different thicknesses. Also in this case, the receiving device or depression must be adapted to the asymmetrical course. In one embodiment, the outer belt or the outer border or border is guided around the stop bracket in accordance with a circular or oval outer contour. In order for the bottom flange to function as a cross strut / pressure bar which absorbs the pressure forces when lifting the double wall, it must be designed with a sufficiently large cross section. For this purpose, the one-piece bending wire is guided twice along the lower flange according to an optional development in bending the double-wall anchor. As a result, the lower flange is usually twice as strong as, for example, the upper flange. In terms of adherence to a minimum concrete cover, in particular for thin concrete shells, according to an optional further development, at least the anchoring legs may be formed wholly or partly from flat steel. The reinforcing steel used by way of example here is flat at least in the region of the legs and with a substantially rectangular cross section, comparable to a thick sheet metal. The recess in the load-carrying means for coupling with the lifting anchor and the locking device are adapted to the design of the transport anchor made of flat steel, possibly by the use of suitable adapter.

Independent protection of the invention is claimed for an arrangement comprising a double wall or a multiple concrete wall, a double wall lifting anchor system according to the invention, which in turn comprises a load receiving device according to the invention and at least one suitable lifting anchor, suitable for transporting a double wall. The arrangement therefore comprises in particular at least one stop device for coupling to at least one external transport means, for example a crane hook, and at least two anchoring legs, which are in each case cast in one of the concrete shells. In this case, the stop device is arranged either outside the intermediate space or just within the intermediate space. It is crucial that the external means of transport no longer has to be introduced so deeply into the intermediate space, as a result of which, for example, the chain of the crane hook can no longer strike against the concrete shell during the diagonal pull. With the attachment point of the transport anchor in the intermediate space of the double wall, the stop device for the external transport via a rigid load-carrying means to form a lever arm is connected. The arrangement is inventively characterized in that by a receiving device or depression, the load-receiving means is at least partially applied in such a form-fitting manner on the surface contour of the abutment portion of the lifting anchor, that a rotational movement of the lifting device is prevented by the stop point or a translational movement relative to the attachment point and thus a rigid lever arm is guaranteed.

In an optional advantageous embodiment of the invention, the arrangement of load-receiving device, transport anchor and double wall is mechanically, electrically, pneumatically and / or hydraulically mounted or disassembled or locked or unlocked. This increases the operational safety in addition to the improved working economy, since now, for example, no worker with a ladder on the double wall must go up to release the load bearing device from the lifting anchor.

• 1 eine perspektivische Darstellung eines erfindungsgemäßen Doppelwand-Transportankersystems,
• 2 eine Schnittzeichnung durch die Schnittlinie A-A aus 1,
• 3 eine Schnittzeichnung durch die Schnittlinie B-B aus 1,
• 4 eine perspektivische Darstellung einer erfindungsgemäßen Anordnung eines Doppelwand-Transportankersystems mit gefedertem Verriegelungsmechanismus,
• 5 eine perspektivische Darstellung einer erfindungsgemäßen Anordnung eines Doppelwand-Transportankersystems mit verschiebbarem Verriegelungsmechanismus,
• 6 eine perspektivische Darstellung einer erfindungsgemäßen Anordnung eines Doppelwand-Transportankersystems mit klappbarem Verriegelungsmechanismus,
• 7a-e in schematischer Frontansicht optionale Weiterbildungen eines Transportankers in einem erfindungsgemäßen Doppelwand-Transportankersystem.

Further details, features, feature combinations, effects and advantages of the invention will become apparent from the following description of advantageous embodiments of the invention and the corresponding drawings. The invention is not limited to symmetrical embodiments, even if the following embodiments are always shown executed symmetrically. The drawings show in

• 1 a perspective view of a double wall lifting anchor system according to the invention,
• 2 a sectional drawing through the section line AA out 1 .
• 3 a sectional drawing through the section line BB out 1 .
• 4 a perspective view of an inventive arrangement of a double-wall lifting anchor system with spring-loaded locking mechanism,
• 5 a perspective view of an inventive arrangement of a double-wall lifting anchor system with sliding locking mechanism,
• 6 a perspective view of an inventive arrangement of a double-wall lifting anchor system with hinged locking mechanism,
• 7a-e in a schematic front view of optional developments of a transport anchor in a double-wall lifting anchor system according to the invention.

1 shows a double-wall lifting anchor system according to the invention 1 comprising a double wall transport anchor partially shown here 2 , which at its stop area of a rigidly executed load-carrying means 3 is partially included. This is what the load handling attachment points 3 a designed at its lower end as a receiving device or depression groove-like milling 3a on, in which the transport anchor 2 can be inserted or inserted. A locking device 4 allows the assembly or disassembly of transport anchors 2 and load handling equipment 3 but secures the cohesion of the system 1 in operation, especially when lifting the double wall. According to this view, the locking device 4 as a cylindrical component, for. B. as a bolt executed, which in a complementary hole in the load-carrying means 3 introduced or performed by a corresponding through hole. A locking device 5 , For example, designed as a projection on the lateral surface of a locking bolt 4 (not shown for reasons of clarity), the projection into a gap 3b between the locking device 4 and the load handling device 3 is insertable, prevents unintentional twisting or slipping out of the bolt 4 out of the hole during operation. This locking device 5 can also be designed as a separate wedge. At the opposite end of the load handling device 3 is a stopper in the form of an eyelet 6 provided for coupling with an external transport, such as a crane hook. In the embodiment shown here is the eyelet 6 rotatable in the stop device 7 of the lifting device 3 stored. When raising the double wall, the eyelet is directed 6 in the pulling direction. At the same time is the load handling device 3 positive fit to the surface contour of the stop area of the transport anchor 2 adjusted so that in cooperation with the locking device 4 a rotational movement of the lifting device 3 is prevented by the stop point or a translational movement relative to the attachment point. This creates a rigid lever arm H between the stop device 7 and the locking device 4 out. The load handling device 3 is to be dimensioned and shaped in such a way that it can reliably withstand these loads.

2 shows a sectional view after the cutting line AA in 1 , In the lower area of the transport anchor system 1 is the transport anchor 2 partially shown, which here in a symmetrical embodiment an anchor point 2a and a stop bracket 2 B formed as a stop area of a stop triangle with two anchoring legs 2c having. The two anchoring legs 2c are intended for setting in concrete in a concrete shell of the double wall. The load handling device 3 has a groove-like cut 3a or other depression on whose contour at the contour of the attachment point 2a and the stop bracket 2 B , for the formation of the largest possible contact possible 3c between transport anchor 2 and load handling equipment 3 , tired. The locking device 4 prevents the transport anchor from slipping out 2 from the groove-like milling 3a or other recess of the lifting device 3 , An unillustrated projection or wedge prevented as a locking device 5 a twisting or sliding out of the locking device 4 from the load handling device 3 , Such a wedge, for example, in a designated space 3b between transport anchor 2 and load handling equipment 3 and / or between the locking device 4 and load handling equipment 3 pushed in or pushed in. Due to the positive contact between the transport anchor 2 and load handling equipment 3 forms in the case of attacking a tensile force on the stop device 7 along the load handling device 3 a rigid lever arm H with a horizontal component, with which For example, a horizontal double wall can be safely placed.

3 shows a sectional view after the cutting line BB in 1 , In a development of a transport anchor 2 Here is a push rod 2d for absorbing the pressure forces in the transport anchor 2 pictured when lifting a double wall. In the embodiment illustrated here, the components of the locking device 4 to see which are composed as follows: locking bolt 10 with a substantially cylindrical outer contour, locking bolt head 8th , which is the sliding out of the locking bolt 10 prevented in a first axial direction and a locking pin or locking pin 9 , which after insertion of the bolt 10 is inserted into this and prevents slipping in the second axial direction.

4 shows an optional development of a double wall lifting anchor system, installed in a double wall arrangement. The double wall arrangement consists of two concrete shells 11a which is a gap 11b in which the double wall transport anchor 2 and the load bearing device are arranged. The first optional further development of the double wall lifting anchor system 1 out 1 points the transport anchor 2 an additional reinforcing bar 2e on, which acts as a spacer and the installation of the transport anchor 2 to facilitate in the double wall arrangement. At this spacer 2e is the milling 3a or other depression for the most form-locking embracing the transport anchor 2 adapt. In essence, therefore, a certain load bearing device for a particular lifting anchor is provided. Theoretically, the use of suitable adapters is possible. Also the locking device 4 must be attached to the modified transport anchor 2 be adjusted. For easier assembly and disassembly of the locking device 4 is a spring mechanism 12 provided such that the direction of action of the spring substantially parallel to a central axis 12a the locking device is aligned. The spring mechanism 12 is particularly helpful in conjunction with an electrical, pneumatic or hydraulic operation of the locking mechanism. For example, the security pin 9 by an electromagnetic actuator from the locking bolt 10 pulled out, becomes the spring mechanism 12 triggered. The in the axial direction of action 12a compressed spring strives back to its relaxed starting position and pulls the locking bolt 10 from the load handling device 3 so far out that the transport anchor 2 from the load handling device 3 can be separated.

5 shows a further optional development of a double wall transport anchor system, built or installed in a double wall arrangement 11a . 11b , For simplified, but at the same time very reliable assembly and disassembly of the locking device, a sliding mechanism is provided, in which a slider 13 in the unlocked state in a recess 13a of the lifting device 3 can be parked. To lock the slider 13 along a groove 13b led into the locked position in which the slide 13 through a biaxial locking pin 14 is fixed. Also, the sliding mechanism is particularly advantageous in cooperation with an electric, pneumatic or hydraulic operation of the locking mechanism, in which the sliding mechanism can be locked or unlocked by means of an electromagnetic actuator.

6 shows in the unlocked state, another optional development of a double-wall lifting anchor system. For simplified, but at the same time very reliable assembly and disassembly of the locking device, a folding mechanism is provided in which in the locked state, a flap 15a along with a milling 3a of the lifting device 3 a transport anchor 2 at the anchor point 2a and at least partially on the stop bracket 2 B of the stop polygonal and the spacer 2e positively includes so far that any rotational movement of the lifting device 3 around the attachment point and any translational movement of the load handling device 3 is prevented relative to the stop point. In 6 is an example of a transport anchor 16 according to 7a shown with ribbed surface, along a crossbar 2d has an overlap region in which the reinforcing material is doubly guided and in which the ends of the reinforcing material are welded together. The flap 15a is about a hinge 15b pivotable from the locked state to the unlocked state. In the locked state, a locking bolt and / or a locking pin through a hole 15c in the flap 15a and through a hole 15d in the load handling device 3 be led to the flap 15a to fix in the locked position. Also, the folding mechanism or pivoting mechanism is particularly advantageous in cooperation with an electrical, pneumatic or hydraulic operation of the locking mechanism. Depending on the desired function, all load handling systems described so far can be used with all transport anchors 7a to 7e combined, provided the receiving device or recess 3a of the lifting device 3 with the contour of the selected transport anchor 2 is tuned for positive retention.

According to 7a is a one-piece transport anchor 16 bent from a bending wire to a one-piece polygonal track train, which is basically closed, for example via a welded joint at any point. Two outer sections of the track train are parallel anchoring legs 2c , The strand sections of the two anchoring legs 2c are at their respective ends via a horizontally bridging upper flange, at the same time as a spacer 2e acts, and a horizontally bridging lower flange, which also serves as a push rod 2d functions, connected. Overall, the path train formed from the anchoring legs, top flange and bottom flange results in an oblong-rectangular in the horizontal direction in this case symmetrical outer belt 2d . 2e , As a stop area for a load handling attachment 3 or an external transport, such as crane hooks, within the rectangle is a stop polygonal in the example shown an isosceles stop triangle 2a . 2 B with its base directly on the bottom strap 2d overlying or congruent. The two adjoining strand sections 2 B the stop polygonal and the lower belt together result in a two-ply and thus reinforced cross strut 2d showing the location of the two parallel anchoring legs 2c stabilized relative to each other. Also, this stop polygonal is in the course of the production of one piece of bending wire an integral part of the one-piece transport anchor 2 , The tip opposite the base and the bottom flange 2a of the stop polygonal (isosceles stop triangle) with the local corner area serves as a stop point 2a for coupling with the load handling device 3 or the intervention of an external means of transport. For stiffening the attachment point 2a is the tip of the stroke polygon with the spacer 2e preferably welded in the middle. In the example shown has the anchor point with the two in the top 2a meeting triangular legs 2 B the shape of a two-legged stop bracket, with the top 2a forms the stop point. The above-mentioned welded joint is according to the drawing example at one end of the lower chord 2d formed at one of the base angle of the stop polygonal. According to 7a is the transport anchor 2 with a grid structure with the outer belt 2c . 2d . 2e designed as their outer mount. It includes only triangular grid cells, of which the middle or middle the stop polygonal 2a . 2 B forms.

In 7b is a special embodiment of a transport anchor 17 shown with two axes of symmetry and four anchor devices. The two mutually perpendicular symmetry axes form diagonals of a stop polygonal 2a . 2 B , which is designed according to drawing example as a 4-cornered rhombus. The stroke polygon 2a . 2 B is bounded by two opposite, swept polygons, each with four convex corner areas. The overturned polygons are joined to each other with two of their four convex corner regions at joints, for example by welding. There are also two opposing of said four attachment points 2a , The grid structure of the transport anchor 2 , which is made up of a middle, serving as a stop-polygonal grid cell and four of the middle surrounding triangle lattice cells, is externally bordered by an outer belt. From the choice of a respective one of the four attachment points 2a For carrying out a concrete wall transport, it depends on which areas of the outer belt form as anchoring leg and as a spacer and push rod and as the load-carrying means 3 must be formed as a matching counterpart. By this geometry, a prefabricated concrete component in flexible applicability depending on the ambient and boundary conditions on one of each arranged in a corner region of the diamond-shaped stop square attachment point 2a be raised.

According to 7c is the grid structure of the transport anchor 18 again composed exclusively of 3-cornered grid cells. The outer belt comprising the resulting lattice structure from the outside 2c . 2d realizes an equilateral-concave traverse. A spacer 2e eliminated. The two opposite, parallel anchoring legs 2c form the same sides and run perpendicular to the fully straight, as a cross brace 2d serving lower flange, the anchoring leg 2c connects at one end. The one concave top realized upper chord 5 connects the other ends of the anchoring legs 2c , The stroke polygon 2a . 2 B in the form of an isosceles triangle is located in the lower region or in the lower half of the lattice structure, approximately centrally located between the two isosceles outer triangles, the base of each as one of the two anchoring legs 2c serves. The area of the top, where the two same legs 2 B meet the stop polygonal, can be used as a stop area. The latter is congruent with the concave, inwardly directed corner of the upper belt and thus within the lattice structure against the outer edges of the concave side recessed or offset down. This can be one with the anchor point 2a engaged load handler 3 or hoist closer to the center of gravity of the grid structure or possibly even attack below it, with the advantage of increased transport stability.

According to 7d and 7e it is within the scope of the invention, the curvatures or bends of the outer structure bordering the lattice structure roundish according to a circular shape 19 or oval according to an elliptical shape 20 to let go. Respective quarter circular arcs form according to 7d the individual sections of the circular outer belt, namely anchoring leg 2c , Upper and lower chords. The same applies to the individual arc sections in the elliptical outer belt 7e , According to 7d the outer belt passes through the three corner regions of the triangular, equilateral stop polygon 2a . 2 B and thus forms its circumference. Each of the corner areas can be used as an attachment point 2a be used.

After installation of the transport anchor 2 . 16 . 17 . 18 . 19 . 20 in a finished double wall of reinforced concrete, comprising at least two concrete shells 11a and an intermediate space 11b can the transport anchor 2 with the wall reinforcement of at least two concrete shells 11a be engaged. Before pouring it with concrete, the anchoring legs can be used during the assembly or sewing process 2c on the horizontal reinforcing bars of the grid reinforcement on the gap 11b guided side away, so that reinforcing rods from the respective anchoring leg 2c be underrun. This results in a preferred embodiment for the strand material used or the transport anchor formed therefrom 2 a closed train. The strength of the transport anchor 2 and from its connection with the wall reinforcement is thereby further strengthened. Now lifts a means of transport (eg inventive load handling equipment 3 , Crane hook, carabiner) at the anchor point 2a the double wall or is by the lever H a moment at the stiffened anchor point 2a transferred, the load from the upper and the anchoring legs 2c transferred to the horizontally guided rebars and thus to the entire wall reinforcement. At the same time the load handling device prevents 3 any rotational movement, for example, of the crane hook around the attachment point 2a and any translational movement relative to the attachment point 2a and thus harmful contact between the chain of the means of transport and the concrete shell 11a , As soon as the double wall is at its place of installation after erection and transport, the intermediate space can 11b after loosening the load handling device 3 from the transport anchor 2 poured with in-situ concrete, filled with insulating material or used for any other purpose.

LIST OF REFERENCE NUMBERS

1

Load bearing device

2

Lifting anchor

2a

Transport anchor attachment point

2 B

Transport anchor bracket

2c

Transport anchor leg

2d

Lifting Anchor cross brace / chord

2e

Transport anchor spacers / Transportankeraussteifung / top chord

3

Load handling devices

3a

Maul / receiving device / well / recess / milled / pocket / groove

3b

Gap between transport anchor / locking device and load handler

3c

Contact surface between transport anchor and load handling attachment

4

locking device

5

Locking / wedge

6

anchorage

7

Stop device / pivot point of the lifting eye

8th

Locking bolt head

9

safety pin

10

locking bolt

11a

Concrete shell, double wall half

11b

gap

12

locking suspension

12a

Central axis of the lock

13

Locking slide, locking flap

13a

rail

13b

groove

14

Locking pin for slider

15a

locking flap

15b

Hinge of the locking flap

15c

Bore in locking flap for locking pin / locking bolt

15d

Drilling in load-bearing device for locking pin / locking bolt

16

stop square

17

Stopper 1

18

Stopper 2

19

stop circuit

20

stop Oval

A-A, B-B

cut

H

lever arm

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 2826930 A1 [0007]

Claims (17)

Load-receiving device (1) for transport anchors (2, 16, 17, 18, 19, 20), in particular suitable for transporting double or multiple concrete walls with opposing concrete shells (11a), wherein the load-receiving device (1) comprises at least one stop device ( 7), by means of which external transport means can be brought into engagement, a bending-resistant load-receiving means (3) for coupling to a stop region (2a, 2b) of a transport anchor (2, 16, 17, 18, 19, 20) connected to the stop device ( 7), a locking device (4), which for holding the load-receiving means (3) in engagement with the transport anchor (2, 16, 17, 18, 19, 20) is formed, characterized in that the load-receiving means (3) a Recess or receiving device (3a), wherein the shape, the contour or the course of the recess or receiving device (3a) wholly or partially for an investment or an engagement in each case under positive engagement or with the abutment region (2a, 2b) of the transport anchor (2, 16, 17, 18, 19, 20), and / or the depression or receiving device (3a) wholly or partly for forming a contact surface (3c) with the abutment region (3c). 2a, 2b) is designed. Load bearing device (1) after Claim 1 , characterized in that the load receiving means (3) is designed and dimensioned such that the stop means (7) with the external transport means outside a gap (11b) can be coupled, which define at least two concrete shells (11a) of an imaginary double wall between them. Load bearing device (1) after Claim 1 or 2 , characterized in that the locking device (4) has at least one locking bolt (10) which is displaceable in a locking bore formed in the load receiving means and by at least one releasable locking pin (9) axially locked or locked, in the locking bolt (10) transversely or is arranged obliquely adjustable. Load bearing device (1) after Claim 3 , characterized in that between locking bolt (10) and load receiving means (3) or between locking bolt (10) and lifting anchor (2) a gap (3b) is formed or formed, in the assembled state, a locking device (5), for example a wedge inserted or inserted. Load-bearing device (1) according to one of the preceding claims, characterized in that the Verrieglungsvorrichtung (4) is wholly or partially formed with a gripping mechanism, for example with a sheet metal clip. Load-receiving device (1) according to one of the preceding claims, characterized in that the locking device (4) has a spring device for its assembly or disassembly, the direction of action of the spring (12) being substantially parallel to a central axis (12a) of the locking device (4). , for the displacement of said locking device (4) is aligned. Load-receiving device (1) according to one of the preceding claims, characterized in that the locking device comprises a flap (15a) rotatably mounted about a hinge joint (15b), which for cooperation with the recess or receiving means (3a) of the load-receiving means (3) and arranged to include at least the attachment point (2a) and portions of the stop bracket (2b) of a transport anchor (2, 16, 17, 18, 19, 20). Load-bearing device (1) according to one of the preceding claims, characterized in that the locking device (4, 12, 15a) for locking and / or unlocking is provided with means for its mechanical, electrical, pneumatic and / or hydraulic actuation. Double-walled transport anchorage system, comprising at least one transport anchor (2, 16, 17, 18, 19, 20), suitable for transporting a double wall (11a, 11b), characterized by a load-receiving device (1) according to one of Claims 1 - 8th , Double wall lifting anchor system after Claim 9 , characterized in that a stop region of the transport anchor for coupling with the load-receiving means (3) as a stop corner region (2a) or in a corner region (2a) of at least one stop triangle (2a, 2b) is realized from strand material. Double wall lifting anchor system after Claim 9 or 10 , characterized in that the abutment region of the transport anchor (2a, 2b) having a selbigem coupled, optionally horizontally oriented, spacer means (2e). Double wall lifting anchor system according to one of Claims 9 - 11 , characterized in that the abutment region of the transport anchor (2a, 2b, 2e) for coupling with the load receiving means (3) from an outer enclosure or border with a square, rectangular (15), polygonal (16, 17), oval (18) or roundish (19) shape and / or as a concave or convex polygon (16, 17) is surrounded, wherein the outer skirt or surround the anchoring leg (s) (2c). Double wall lifting anchor system according to one of Claims 9 - 12 , characterized in that the transport anchor (2, 16, 17, 18, 19, 20) or at least the triangle (2a, 2b) are formed as a self-contained, fully or partially polygonal line train. Double wall lifting anchor system after Claim 13 , characterized in that one, several or all corners of the track train formed by bending a respective portion of the strand material and provided with a bending radius. Double wall lifting anchor system according to one of Claims 9 - 14 , characterized in that the strand material of the transport anchor (2, 16, 17, 18, 19, 20) is formed at least in partial regions of flat material, for example a flat steel. Arrangement with a multiple concrete wall (11a, 11b), which has at least two opposite concrete shells (11a), which define a gap (11b) and with a double-wall lifting anchor system, in particular according to one of Claims 8 - 14 , which has at least one stop device (7) for coupling to at least one external transporting means and at least two anchoring legs (2c) which are each concreted into one of the concrete shells (11a), wherein the stop device (7) is optionally arranged outside the intermediate space (11b) is and via a load-receiving means (3) to form a lever arm H with an abutment point (2a) is arranged in the intermediate space (11b) of the double wall, characterized in that a receiving device or recess (3a) of the load-receiving means (3) at least in partial areas in such a form-fitting manner against the surface contour of the abutment region (2a, 2b) of the transport anchor (2, 16, 17, 18, 19, 20), or the surface contour of the abutment region (2a, 2b) of the transport anchor (2, 16, 17 , 18, 19, 20) in such a form-fitting manner that a rotational movement of the load-receiving means (3) around the attachment point (2a) or a translational e movement of the load-receiving means (3) relative to the stop point (2a) is prevented. Arrangement according to Claim 16 , characterized in that the load receiving device (1) for mounting and / or dismounting with the transport anchor (2, 16, 17, 18, 19, 20) of the double wall mechanically, electrically, pneumatically and / or hydraulically locked or unlocked.

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