EP1596015A1 - Device for lifting concrete components - Google Patents

Abstract

The device (V) for the fixing and lifting of especially prefabricated reinforced concrete components has a protective box (2) and at least one flexible rope element (S) passing through the box and which has a rope loop (3) and end anchor (4). The rope loop and/or the end anchor of the flexible rope element assumes at least in sections an angle of between 0 and 45 degrees in relation to the base (2') of the protective box, and may be between 5 and 25 degrees.. An independent claim is included for a concrete component, and especially a prefabricated reinforced concrete component.

Description

Technical area

The present invention relates to a device for Striking and lifting of concrete parts, in particular Precast reinforced concrete parts, according to the preamble of claim 1.

State of the art

For striking and lifting concrete parts are in the state The technology commonly used in transport anchors, which in the concrete part are concreted in and then as Serving point for a crane hook or the like. Standard transport anchors have a head that with a Internal thread is provided, which in the concreted state the transport anchor accessible from the concrete surface is. In the internal thread is then on site with a screwed in an externally threaded crane loop, in which in turn are hung (hinged) a crane hook can. Other known transport anchors are for example in DE 295 13 732 U1 or DE 35 41 262 A1 discloses.

However, the known lifting anchor have a number of Disadvantages. This often happens in the area of threads Dirt, especially by concrete, what that Screwing in a crane loop considerably more difficult or even impossible. In addition, there is a risk that crane loops are screwed into the internal thread, the not on the transport anchor or the weight of the concrete part what are the work safety significantly impaired. On top of that, the loose on the job site Existing crane loops are often lost and easily are confused. Not least are the well-known Transport anchor difficult to manufacture the concrete part to fix a formwork.

Furthermore, transport anchors with forged head known. This head you can with an additional Load-receiving means with a claw-like holding device to grab. Furthermore, stamped transport anchors are off Flat material known in the head area a cross-cut have to be in with a load handling device with a engages corresponding cross bolt. In addition, are vertically embedded and protruding rope loops known to which you can directly hit with a hook can. The same system of rope loops is also available in a depression, what then again as Load-carrying means a particularly flat hook needed to reach under the rope loop.

All these transport anchorage systems have in common that one expensive and repeatedly used load handling equipment needed, which represents an economic disadvantage or with the protruding rope loop this after transport must disconnect or it remains on the component what a represents visual impairment.

In addition, there are many more in construction Inserts. For non-positive connection of concrete parts Often fasteners come with a storage box Pick up one or more loops for use. So is in the CH 688 239 A5 a storage box with folded Reinforcing steel shown, which protrudes at right angles from the box bottom. In DE 3,127,087 A1 also several bent Reinforcing steel elements shown in which the straight element in Deposit box is orthogonal and a bend orthogonal as end anchor protrudes to the bottom of the box on the concrete side. Also DE 4 109 706 A1 shows such a storage box with bent Reinforcing steel and right-angled loop as End anchors. Also in DE-OS 1 684 254 is a storage element shown, which includes a loop, which is substantially folded at right angles to the end anchor and stored in the unfolded state substantially vertical to Trunk floor stands. All these described Deposit boxes are unique, rigid reinforcing bars or else to include flexible wire rope elements in the storage box and at the end of an end anchor substantially perpendicular to Have fun box floor. Purpose of these elements is in each case the connection of concreting sections with each other. Further examples of such storage boxes are given in EP 0 534 474, EP 0 819 203 and EP 0 914 531.

All the above-mentioned storage boxes have in common that their main job is to have flexible reinforcement loops in Take shape of wire ropes, which after the Concreting process can be folded out to the Concrete components by juxtaposing and overlapping the To connect rope loops force-locked and permanently. Main direction of action of the connecting cable loop is thus in the final state orthogonal to the bottom of the storage box. Accordingly, the anchoring ends protrude in relaxed Condition concrete side perpendicular to the bottom of the storage box in the concrete. Likewise, the direction of use of the Concreting folded in and later relaxed standing out Loop perpendicular to the box longitudinal direction or to Box bottom. For this reason, these deposit boxes are all in common, that holding elements and devices be present need to make the rope loop elastically deforming the part with considerable restoring forces in the folded position forces. Only when unfolding can this one again take a restraint-free, relaxed position.

Require the known fasteners with deposit boxes therefore expensive tools that the rope loop before their use, d. H. during setting in and the Transports, against whose restoring force elastically deforming within the custody box. For this purpose will be For example, the deposit box with elaborate Holding elements provided what the construction of the But connecting element makes a total of consuming.

Presentation of the invention

It is therefore an object of the present invention to provide a Device for lifting concrete parts of the beginning to provide that type, which is a simplified Construction and increased work safety.

This object is achieved by a device for Striking and lifting concrete parts with the characteristics of Claim 1 solved. Advantageous developments of the invention are indicated in the dependent claims.

The present invention is based on the idea, a Device to be embedded for striking and lifting Concrete parts in such a way that they without further Means or measures directly to a hanging hook, crane hook or the like can be securely attached. To this Purpose is inventively provided that a per se as Connecting element for structures known device with a storage box and a flexible rope element such is designed that it is suitable as a lifting device. In the embodiment according to the invention, the loop takes and / or the end anchor of the at least one flexible Rope element at least partially opposite to the Trolley bottom an angle between 0 and 45 °.

This angle refers to the relaxed or unloaded state of the loop or the end anchor, in which the flexible rope element the storage box penetrates without the flexible rope element through Holding elements or the like is deformed or deflected. Furthermore, the terms rope loop and describe End anchor those sections of the flexible Rope element on different sides of the Verwahrkastens or Verwahrkastenbodens are located, wherein the final anchorage is intended to be built in Condition in concrete to come to rest.

With the device according to the invention it is possible that No special elements need to be provided for that purpose flexible rope element for transport, storage or installation purposes deform and in a certain position, for example inside the custody box, hold. Rather, that is flexible rope element already from the outset so provided that folding the loop with a nearly negligible angle to the End anchorage is to accomplish, so that For example, a molding on the floor box only the sealing, but not the elastic deformation of the Wire rope loop must serve.

In addition, there is the flexible rope element according to the invention already in an orientation from the outset, in which when striking and lifting the device containing concrete part act the highest lifting forces. As a result, harmful kinks, tilting and the like along the rope element avoided what the Safety and durability of the invention Device increases. At the same time also in the concrete one must lower force deflection take place. Against this background the device of the invention is also suitable for narrow or thin-walled or hollow components.

Not least, by the device according to the invention the Work safety increases, since the possibility of a incorrect attachment to crane hooks or the like or a faulty attachment of connectors, the Prior art is required, is eliminated.

According to one embodiment of the invention, it is provided that the rope loop and / or the end anchor at least in sections opposite the storage box floor an angle between 5 and 25 °, resulting in the above Set the benefits even more pronounced.

The ends of the at least one cable element are in the range the end anchor connected to each other, preferably by a steel press clamp. This will not only be a stable and tensile rope element created, but the End connection of the rope element in the region of the end anchor also allows an improved anchoring or Carrying behavior of the end anchor.

Although the safekeeping box depends on the Application can take a variety of forms, is it is preferred according to a development of the invention that the caddy an elongated body for holding the at least one rope loop is. It is in the With regard to a safe reception of the cable loop as proved advantageous that the storage box a longitudinal profile in C or U form. It will be through these forms especially light, a crane hook or the like without significant deflection of the rope loop in this Einhäng, which speeds up the workflow and increases security.

For a good position assurance and a trouble-free sealing the device according to the invention in concreting ensure is in accordance with an embodiment of the invention provided that the at least one flexible cable element the Trolley floor in the area of an opening penetrates, which preferably sealed by a molding is.

In another aspect, the present Invention also provides a fastener, by means of the device of rod-shaped elements such as Reinforcing bars or the like can be attached. hereby the device according to the invention does not need exclusively a formwork section can be attached, but can even before setting up a formwork or before applying a reinforcement basket on a formwork at a desired Place to be installed without the other Hinder the production process. It is special preferred that the fastening element is formed is that the device on rod-shaped elements can be hung, which further enhances the production process is simplified.

Although the fastener have any shape and can be made of any material is it is preferred according to a development of the invention that the fastener of a bent wire part, a Sheet metal part or a plastic part and / or a has at least partially curved shape.

The fastener can, depending on the application be formed integrally with the storage box or even be a separate element of this. In the latter case is provided according to a development of the invention, that at the deposit box at least one receptacle for attaching a Fastener is provided. This will allows the device according to the invention depending on Use case with a tailor made Fastener can be combined without the Device needs to be changed every time. That's it particularly preferred that the at least one recording by an opening, depression, indentation and / or bending out is formed in the storage box.

To pick up and bending out the at least one Cable loop in the storage box or out of this too allow, is in accordance with an embodiment of the invention provided that the deposit box on his the Trivet floor opposite side an opening having. It is further provided that the opening through a removable cover is closed so that the Rope loop is protected until its use and moreover, not undesirable from the storage box protrudes. This can be done in the context of the present Invention a comparatively thin-walled cover for Use come because the flexible rope element only to a small amount from his relaxed position in the deformed position within the storage box deformed must become. Furthermore, it has proven to be simple and reliable Solution, the removable cover as self-adhesive Form film.

Even in the presence of the above fastener It may be useful, the deposit box in addition or even only to be attached to a formwork. To this end includes the storage box according to a development of Invention at least one nail hole. It is special preferred that at least two nail holes are provided, to a rotation of the storage box in the attached state prevent.

Although the device according to the invention in any way can be installed in a concrete component is, according to a Development of the present invention, a concrete component, in particular a precast reinforced concrete part, provided at which incorporates the device according to the invention is that the rope loop and / or the end anchor at least in sections, also to the adjacent component surface one Angle between 0 and 45 ° preferably between 5 and 25 ° occupies.

Brief description of the drawings

Fig. 1a

shows a schematic perspective view of a first embodiment of the invention Contraption;

Fig. 1b

shows a schematic perspective view of in Fig. 1a shown in conjunction with a fastener;

Fig. 1c

shows a schematic perspective view of in Fig. 1b shown in connection with a partially opened cover;

Fig. 2

schematically shows the attachment of the device Fig. 1a at a formwork section;

Fig. 3

schematically shows the attachment of a Device according to the invention on a rod-shaped Element;

Fig. 4

schematically shows a further embodiment of the device according to the invention;

Fig. 5

shows a schematic side view of the installation the device according to the invention in one Precast concrete with lateral formwork;

Fig. 6

shows a schematic side view of Striking and lifting a precast concrete part after stripping by means of the invention Contraption;

Fig. 7

shows a schematic, partially cut away View of the installation of the invention Device in a curved, thin-walled Precast concrete.

Detailed description of preferred embodiments

Preferred embodiments of the present invention will be described in detail below with reference to FIGS accompanying drawings.

Fig. 1a shows a schematic perspective view of a first embodiment of the device V according to the invention, which is intended to be embedded in a concrete component 1 to become and in the hardened condition of the concrete to Hitting and lifting the concrete component 1 to serve.

The device V according to the invention comprises a Deposit box 2 and in the present embodiment a flexible rope element S holding the storage box in the area an opening 7 penetrates. The flexible rope element S has a rope loop 3 and on the opposite Side of the opening 7 and the deposit box bottom 2 'one so-called end anchor 4 in the form of two end portions of Cable element, which at its ends by means of a Steel press clamp 11 or the like connected to each other are.

The flexible cable element may be, for example a wire rope section, the present Invention is not limited thereto and others flexible support elements can be used. Thanks to her Flexibility is the flexible rope loop 3 by hand in Reference to the storage box 2 deflectable and also within a formed by the storage box 2 Cavity can be accommodated. In Fig. 1a, the flexible cable element S in a relaxed, i. unloaded state shown in which except possible deflecting forces in the Through hole 7 and the weight no external forces act on the flexible rope element S. In this condition take the rope loop 3 and the end anchor 4 of the flexible Rope element S each have an angle in the range between 5 and 25 ° opposite the storage box floor 2 'a.

The storage box 2 is preferably made of robust sheet steel obtained in one piece and formed as an elongated body, in the interior of the rope loop 3 can be added. It has proved to be advantageous, the storage box 2 in the longitudinal profile in C or U form form. In the area the opening 7 of the deposit box bottom 2 'can be Form part 8 are provided to prevent ingress or Prevent leakage of concrete or sludge. The ends of the storage box 2 are preferably made of bent sheet metal formed and folded so that they the storage box. 2 solid as end cap 19 close.

A development of the embodiment of Fig. 1a is shown in FIG Fig. 1b shown in a schematic perspective view. The Embodiment in Fig. 1b additionally includes a Fastener 13, by means of which the device to rod-shaped elements such as reinforcing bars or the like attachable. Although the fastener 13 also can be formed integrally with the storage box 2, is it is a separate one in the present embodiment Component in shots 12 and the side walls of the Storage box 2 is attached or inserted. Both Receivers 12 of the storage box 2 may be openings, Depressions, impressions and / or bending out, the easy attachment and possibly also the release of the Allow fastener 13. The fastener 13 can take a variety of forms, but is Preferably designed such that it easily on a rod-shaped element can be hung. advantageous Embodiments of the fastener 13 are, for example a bent wire part, a sheet metal part or a plastic part, wherein it is preferable for the hooking that the Fixing element 13 an at least partially has curved shape.

Another embodiment of the invention Device is in a schematic perspective view in Fig. 1c shown. The device V shown in Fig. 1c corresponds to the embodiment of Fig. 1b, in addition is provided with a removable cover 18, which a the storage box floor 2 'of the storage box. 2 opposite opening 9 of the storage box 2 closes. The cover 18 is preferably made of a self-adhesive film and ensures that during a Concreting process no concrete or sludge in the interior of the Custody Box 2 invades. Fig. 1c shows the cover 18 in partially open condition.

Although the device V according to the present invention preferably combined with at least one fastening element can, the device V or the storage box 2 also alternatively or additionally directly to a formwork section 15 are attached, as shown schematically in Fig. 2. The embodiment of the device V shown in FIG for this purpose comprises two nail holes 17, through which Nails 16 are hammered into a formwork section 15 can to attach the deposit box 2 itself to this. The nail holes are also shown in Fig. 3.

Further embodiments of the device V according to the invention are shown in Fig. 3 and 4 in schematic views. The embodiment in Fig. 3 is characterized in that the fastener 13 in the form of a short, curved Hook is formed from flat material, by means of which the Device V are easily hung on a rod 14 can. The alternative embodiment of FIG. 4 records itself by fastening elements 13 made of a flat material out, which do not have to be bent, but where the Einhängfunktion by recesses 13 'is achieved in the a rod-shaped element can easily intervene.

The installation of the device V according to the invention in a still in the formwork 15 located reinforced concrete precast 1 is in Fig. 5 is shown in a schematic side view. In this case, the cable loop 3 is within the Storage box 2 so that they are in the production of the Precast concrete part 1 within the formwork sections 15 not disturbs. The collapse of the cable loop 3 in the interior of the Custody box 2 can be done in any way for example by means of a film cover, by means of lateral holding elements or by mere application of the Storage box 2 to the formwork section 15. Advantage Here is that the cable loop 3 of hers in Fig. 1a shown, relaxed state only slightly deflected to go to the inside of the storage box 2 reach.

The end anchor 4 of the flexible cable element S has in built-in state, however, its already in Fig. 1a shown orientation and stands at an angle between 0 and 45 °, preferably between 5 and 25 ° the trivet floor 2 'concrete side 6 out. As in FIG. 5 can be seen, this flat angle of the end anchor has 4th especially in thin or slim components the advantage that the ferrule 11 is not on the opposite Formwork section 15 is applied, but free within the Precast reinforced concrete 1 comes to rest, so that with the Inventive device V also very narrow or slim components without problems and without unwanted interference on the component surface or deformations of the end anchor 4 let produce.

The use of the inventive device V for Lifting of the precast concrete part 1 shown in FIG Fig. 6 shown schematically. For this purpose, first an optional cover 18 of the Deposit box 2 removed, whereupon the cable loop 3, unless it is held by other retaining elements, in the relaxed state shown in Fig. 1 from the inside of the storage box 2 comes out. The device V stands thus already for striking or hanging a crane hook 20 ready. This must, as shown in Fig. 6, now only be fed and attached. Doing so, the top of the Crane hooks penetrate into the inside of the storage box 2 what the hanging of the crane hook 20 in the cable loop. 3 greatly facilitates and avoids sources of error. As based on of Fig. 6, there are rope loop 3 and Endanker 4 in a direction in which much of the Lifting force of the crane hook 20 affects what the load bearing behavior Lifting affects favorably and allows for even thin ones or slim or hollow components safely with the inventive device can be raised.

An example of a common hollow Concrete component is shown schematically in Fig. 7. there it is a tube section 1, in whose curved outer wall, the device V according to the invention is suspended by means of a fastening element 13. Such tubular components 1 often have a very low wall thickness, so the use of known Slings is usually difficult while the Inventive device V a safe and easy Lifting of the component 1 allows. The hanging of the Device in the net-like prefabricated rod-shaped Reinforcement using the fastening device 13 allows the preferred use of steel formwork to which one can not nail.

List of reference numbers

1

Precast concrete

2

storage box

2 '

storage box

3

wire loop

4

Rope anchors, end anchors

5

formwork side

6

concrete side

7

Breakthrough, penetration at the deposit box

8th

molding

9

Opening the storage box

10

Holding means or flanges

11

ferrule

12

retaining elements

13

fastening device

14

reinforcement

15

formwork

16

nail hole

17

nail

18

Cover the opening

19

end cover

20

crane hook

δ

Angle end anchor to storage box floor level

V

contraption

S

cable element

Claims (16)

Device (V) for striking and lifting concrete parts, in particular precast reinforced concrete parts (1), comprising a storage box (2) and at least one flexible cable element (S) penetrating the storage box (2), comprising a cable loop (3) and an end anchor (4 ), wherein the cable loop (3) in the storage box (2) is at least partially receivable and can be brought out of this,
characterized in that the cable loop (3) and / or the end anchor (4) of the at least one flexible cable element (S) at least partially opposite the trolley bottom (2 ') occupies an angle (δ) between 0 and 45 °. Apparatus according to claim 1, characterized in that the cable loop (3) and / or the end anchor (4) of the at least one flexible cable element (S) at least partially opposite the trolley bottom (2 ') occupies an angle (δ) between 5 and 25 ° , Apparatus according to claim 1 or 2, characterized in that the ends of the at least one cable element (S) in the region of the end anchor (4) are interconnected, preferably by a steel press clamp (9). Device according to one of the preceding claims, characterized in that the storage box (2) is an elongated body for receiving the at least one cable loop (3). Device according to one of the preceding claims, characterized in that the storage box (2) represents a longitudinal profile in C- or U-shape. Device according to one of the preceding claims, characterized in that the at least one flexible cable element (S) penetrates the storage box bottom (2 ') in the region of an opening (7), which is sealed by a molded part (8). Device according to one of the preceding claims, characterized in that it further comprises a fastening element (13), by means of which the device can be attached to rod-shaped elements such as reinforcing bars or the like, in particular suspended. Apparatus according to claim 7, characterized in that fastening element (13) consists of a bent wire part, a sheet metal part or a plastic part and / or has an at least partially curved shape. Device according to one of the preceding claims, characterized in that on the storage box (2) at least one receptacle (12), in particular an opening, depression, indentation and / or bending out, for attaching a fastening element (13) is provided. Device according to one of claims 7 to 9, characterized in that the fastening element (13) with the storage box (2) is integrally formed. Device according to one of the preceding claims, characterized in that the front ends of the storage box (2) by end covers (19) are sealed. Device according to one of the preceding claims, characterized in that the front ends of the storage box (2) are obtained in one piece by bending (19). Device according to one of the preceding claims, characterized in that the storage box (2) on its side facing the storage box bottom (2 ') opposite side an opening (9) which is closed by a removable cover (18). Apparatus according to claim 13, characterized in that the removable cover (18) is designed as a self-adhesive film. Device according to one of the preceding claims, characterized in that the storage box (2) has at least one nail hole (16), preferably at least two nail holes, for fastening the storage box (2) to a formwork (15). Concrete component, in particular reinforced concrete precast element (1), with a device according to one of the preceding claims, characterized in that the cable loop (3) and / or the end anchor (4) of the at least one flexible cable element (S) at least partially also to the adjacent component surface an angle (δ) between 0 and 45 °, preferably between 5 and 25 ° occupies.

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