EP2224075B1 - Storage device for anchoring loops and method for producing concrete parts - Google Patents

Description

The present invention relates to the production of precast concrete parts and in particular a storage device for cable loops, and with a storage box, which receives at least a clamping part and a cable eye of the cable loop, the storage box has a bottom and side walls and wherein in the bottom of the storage box at least one opening for the Leading out of the storage box protruding free ends of the cable loop and the inclusion of a portion of the clamping member is provided, the storage box, apart from a bottom opening for passing the free ends of the cable loop, substantially completely closed and / or sealed against the formwork to to prevent the cable loop received in the storage box from being surrounded by concrete.

Such warehouses are already known in numerous variants from the prior art.

From the DE 10 2006 057 134 A1 For example, a rope loop box for receiving at least one cable loop is known, which has a main body with a substantially rectangular bottom plate and four side wall portions, wherein at least one of the side wall portions with the bottom plate forms an angle greater than 90 °.

These storage boxes with their included therein rope loops are used for the production of precast concrete parts, typically concrete walls, but also columns or pillar elements. In this case, a corresponding storage device is inserted together with the rope loop received therein on the edge of a formwork for a precast concrete, so that protrude from the cable eye receiving storage box projecting at right angles, free ends of the cable loop in the interior of the space covered by the formwork and with the concrete can be shed. The storage box lies with its open or closed upper side from the inside of the formwork and should, moreover, except for a bottom opening for passing the free ends of the cable loop, be substantially completely closed and sealed against the formwork to prevent the in the storage box recorded rope eye is surrounded by concrete.

After the later removal of the outer formwork and optionally the opening of the storage device then the most angled and recorded in the storage box rope eye is folded out of the free ends of the cable opposite open or open top of the storage box, as far as they do not already protrude from the storage box. The cable eye then serves to receive one or more reinforcing elements, together with corresponding eyelets of adjacent prefabricated components, wherein the space between the adjacent prefabricated components, in which the cable eyes and corresponding reinforcing elements are filled by a grout and thus produces a firm connection between the adjacent prefabricated components.

The present invention accordingly also relates to a method for producing and connecting precast concrete elements, in which at least one storage box with at least one angled cable loop is applied from the inside to a boundary wall of a formwork and poured with concrete, wherein after curing of the concrete and for connecting adjacent Prefabricated concrete parts received in the storage box rope eye of the cable loop protrudes from an open to an outer surface of the precast concrete side of the storage box or is folded out.

For the connection of such precast concrete parts then at least one reinforcing element is then passed through the unfolded cable eyelet, wherein then the cable eye and the reinforcement containing space between adjacent precast concrete parts is filled by a grout.

Instead of generally cuboid Verwahrkästen having at least one bottom and four peripheral, interconnected side walls, so-called "rails" or "Verwahrschienen" are partially included in a formwork, which extend generally along the entire height of a prefabricated component along the narrow side , and in which optionally can be dispensed with the front side walls of the Verwahrschiene when the rail terminates there with adjacent formwork elements. In particular, the front sides of the custody boxes (or possibly also the rails) can also be formed by adhesive tape or end plug.

Such a Verwahrschiene thus consists essentially only of a bottom and two opposite, parallel side walls, which are angled relative to the ground either at right angles or with the inclusion of an obtuse angle, so that they form approximately a trapezoidal cross-section. Also, storage boxes may have an approximately trapezoidal cross-section and to that extent deviate from the basic shape of a cuboid, but, as far as the corresponding trapezoidal angles do not deviate too far from 90 °, are nevertheless regarded here as "essentially cuboidal".

The cable loop is generally fixed by a separate "clamping part" on the storage box, which is primarily a seal of the bottom opening, through which the outgoing of the cable eye cable ends and are led out of the storage box. The clamping member may also have one or more bending stops for bending the cable eye relative to the free ends of the rope, as far as these bending stops are not through the storage box or Parts of the same or are formed by the top of the storage box covering formwork. Such bending stops partly also serve as fixing elements for the cable loop on the storage box or the storage device solely by frictional engagement.

These rails or storage boxes are intended to remain permanently in the prefabricated components. In order for adjacent and interconnected prefabricated components to form a composite that is as strong and load-resistant as possible, the corresponding caskets and cradles should also form a bond as strong as possible with the adjacent concrete and the grout in the joint between adjacent precast concrete elements. For this reason, custody boxes and rails or their surfaces are often deliberately designed so that they form the strongest possible connection to the adjacent concrete and Vergußmörtelflächen. For example, projections and recesses of the storage boxes can be provided on the outer and inner surfaces, and these storage boxes or Verwahrschienen can also be made of materials that adhere relatively well and firmly to concrete. Also, by the outer geometry of the storage box, which is not only formed as a rectangular parallelepiped, but may also partially over the floor by more than 90 ° angled side surfaces, you can improve the fixation of the storage box on the concrete and the connection between grout and precast in that the grout fills undercuts which are formed by the correspondingly inclined side walls of the storage box (seen from the top side).

All these measures to improve the connection between the Verwahrkästen or Verwahrschienen and the precast concrete parts in which the Verwahrkästen or Verwahrschienen are involved, but mean a significant overhead. In addition, the Verwahrkästen and Verwahrschienen are lost parts, which increase the cost of manufactured precast concrete.

In the WO 2008/090260 A1 For example, there is described a method and apparatus for providing a parison placed in a concrete structure, the method providing dowel-type burial in a concrete surface by means of a box-like structure. In the box-like structure, a cable loop is arranged, the first end of which is anchored in the cast concrete, whereby the second end is prevented from sticking to the concrete. The box-like structure is removed from the concrete structure after curing of the concrete and the second end of the cable loop is erected substantially perpendicular to the bottom surface of the dowel-like recess.

Compared to this prior art, the present invention seeks to provide Verwahreinrichtungen and a method for producing precast concrete parts, the Require less effort and lower costs and yet improve the composite of adjacent precast concrete parts or at least not impair.

This object is achieved by the Verwagerinrichtung in that the Verwahrkasten after fixing the free ends of the cable loop of the cable loop and the optionally associated clamping part is removable, wherein the clamping part is designed as an angle bracket, consisting of a cable loop consisting of a cable eye and two is parallel to the free ends, holds in an angled state, wherein the angle holder has a cable eye partially receiving and fixing base, wherein the base has a circumferential and applied to the outside of the bottom of the storage box sealing flange, and wherein the base and / or on the Sealing flange locking elements are provided for a temporary fixation of the angle holder on the storage box, wherein the locking elements are in a releasable engagement with the edge of the bottom opening, so that it with a well-defined force which is applied to the storage box perpendicular to the ground and away from the concrete bed, except egg and wherein the storage box is made of a sufficiently stable and solid material so that it can be detached from a concrete bed surrounding the outsides of the floor and side walls and from the angle bracket without damage.

With regard to the method described above, the above object is achieved in that a storage box is used according to one of claims 1 to 14, which for a subsequent reuse after unfolding the cable eye is removed from the precast concrete part.

For the transport and for insertion into a formwork and for fixing the cable loop in the storage box so that the free ends of the cable loop are completely enclosed by the cast in the formwork concrete, make depository and clamping part (together with the cable loop) preferably a unit , In this case, the storage box and its connection to the clamping part are expediently designed such that the storage box, after the casting of the cable loop ends with the concrete and the removal of the formwork, at least from the cable loop and preferably also from the clamping part is releasable; and it is also removable from the recess formed by the storage box in the concrete. Any connection between storage box and cable loop and / or clamping part is therefore designed as a detachable connection.

In a preferred embodiment, the clamping part is designed as a so-called "angle holder" holds a cable loop, which consists of a cable eye and two parallel free ends, in an angled state, in which the cable ends are approximately at right angles to the defined by the cable eye Seilösenebene extend.

This simplifies attaching and holding a cable loop and partially in the storage device or in the storage box in a space-saving, angled state of the cable eye.

For a simultaneously sealed passage of the cable ends and a fixation to a storage box, the angle holder could for example have substantially the shape of a truncated pyramid, which is inserted in close fit in a correspondingly shaped bottom opening of a storage box from the bottom. This gives the angle holder in the opening of the storage box a solid positive or frictional fit, which is readily detachable by removing the Verwahrkastens of the angle holder in a direction perpendicular to the bottom of the storage box direction.

In addition to such a positive and frictional connection by fitting insertion of the angle holder in a bottom opening locking elements could also be provided on the angle bracket or on the storage box, which engage in corresponding openings or undercuts on the other part, but are also readily solvable again. Also, any locking elements should therefore not occur by abrupt, mutual undercuts in positive engagement, but rather by engaging a provided with inclined surfaces projection in a corresponding recess or by only very short projections or Undercuts, so that a release of angle holder and storage box with a defined force, which can preferably be applied easily by hand, is easily possible.

In this case, in a preferred embodiment of the storage device according to the invention, the storage box essentially has an elongated cuboid shape and consists of a sufficiently stable material so that it can be detached from a concrete bed surrounding the outside of the floor and side walls without damage. In particular, therefore, the side walls and the bottom of the storage box should be designed so that no positive connection with the concrete is formed, but at most a frictional connection, as well as any connections with locking elements or the like on the angle holder, without further or with a well-defined force , as it can be solved by a user, if necessary with the aid of a simple hand tool, readily applicable, both the concrete and the angle bracket can be solved.

For ease of applying a trigger force to the storage box to release it from the concrete bed and from the angle bracket, according to one embodiment of the invention, the floor opposite the top of the storage box is at least partially open, or has undercut recesses or that cams on the side walls for applying a pull-out force are provided on the storage box to pull it out of a concrete bed.

For example, the top could be partially closed or have individual, the opposite side walls bridging cover elements or straps or the top of the storage box could be completely closed, however, have a recess with undercuts, in which one can bring a simple hand tool to then on the Top of the storage box and thus to be able to exercise on the storage box overall a corresponding tensile force to solve it from the concrete bed and from the angle bracket which is also held in the concrete bed on the concreted free ends of the cable loop. In one embodiment, the two opposite longer side walls each have an inwardly projecting cam which can be engaged with the fingers or a hook-shaped tool (for example a pick hammer) to move the storage box out of the concrete bed and from the angle bracket (s) ) deduct

In contrast to corresponding conventional warehouses, in a preferred embodiment of the present invention, the outer surfaces of the storage box should consist of a smooth, poorly adherent material. It would also be conceivable that the storage box has a trapezoidal cross section or the shape of a truncated pyramid) with an oblong rectangular cross section), so that the upper side forms a slightly larger area than the bottom of the storage box, which also facilitates detachment from the concrete bed surrounding the side walls.

According to a further embodiment, the angle holder could comprise a socket which partially receives and fixes the cable eye, the socket having a circumferential sealing flange which bears against the outside of the bottom of the storage box.

Thus, for example, the pedestal could have a parallelepiped shape or be cylindrical or of any polygonal cross-section with side walls substantially perpendicular to the bottom of the custody box, but could also be truncated pyramidal, again of any pyramidal cross-section, so as to have a somewhat tapered end easily inserted into a bottom opening of the storage bin, while a portion of larger cross-section, which preferably connects directly to a peripheral sealing flange, fits snugly into the bottom opening of the storage bin.

The sealing flange is, as already mentioned, preferably formed completely encircling, even if this is not a mandatory requirement, even if the base itself sits tightly in the bottom opening of the storage box. In this case, the "sealing flange" essentially serves only as a defined end stop when inserting the angle holder into the bottom opening of the storage box.

But the sealing flange can also have additional or alone sealing function and in this case, as already mentioned, preferably formed circumferentially and it can be tapered at its outer edge also slightly tapered in the form of a sealing lip and in particular the outer peripheral flange edge easily Socket tilted down, so that the base with the flange has approximately the shape of a "mushroom hat". This causes when inserting the base in the bottom opening of the flange first comes into sealing engagement with the outside of the bottom of the storage box, wherein by further, complete insertion of the base in the bottom opening of the outer flange edge is elastically bent up and thereby with a certain bias tight against the bottom of the storage box.

In a preferred variant, however, the sealing flange in turn has the shape of a truncated pyramid, ie its peripheral surface is significantly bevelled (eg by 30 ° to 50 ° relative to the plane of the flange), wherein the lower edge of the corresponding bottom opening of the storage box in the same way (or with a slightly steeper angle) is chamfered, so that the sealing flange fits in the manner of a sealing cone in the chamfered bottom opening.

The sealing flange should have a projection of at least 5 mm from the base, i. the sealing flange should be at least 5 mm wide all around.

At the top of the sealing flange, which faces the interior of the storage box, clamping brackets or locking elements may be provided, which engage with the edge of the bottom opening and the angle holder in any case temporarily and for the time of transport, handling and installation in a formwork, including pouring with concrete sufficiently secure and hold in a sealed system on the storage box. However, this latching or clamping connection should also be easily solvable to remove the storage box without damage and without much effort from the angle holder, after its projecting into the concrete bed parts and the free ends of the bracket held by the angle loop are concreted. Therefore, these locking elements form a releasable engagement with the edge of the bottom opening, d. H. any locking projections have only a short projection or lie with inclined surfaces on the edge of the bottom opening, so that they can be disengaged with a well-defined force which is applied to the storage box perpendicular to the ground and away from the concrete bed.

The locking elements for a temporary fixation of the angle holder could be provided either on the base or on the sealing flange. The storage box is, according to a preferred embodiment of the invention, designed as a reusable storage box, i. It consists of a sufficiently stable and solid material, so that it is the removal of a concrete bed and the removal of the angle bracket usually survives without damage and can be re-equipped with a new angle bracket and a cable loop recorded therein, while the previously in The cable loop taken up by the storage box and the corresponding angle holder remain in the precast concrete element produced with the aid of the storage device.

It is understood that the storage box should consequently also consist of a weathering and against liquid concrete resistant material, in particular from a corresponding plastic material. In addition, aluminum or a combination of different materials including aluminum or galvanized steel sheet is also suitable as material for a corresponding storage box. However, the angle holder is usually made of steel or is a manufactured by injection molding plastic part. In addition, in one embodiment of the invention, the storage box has at its bottom opposite the bottom connecting means for connection to a formwork. These connecting devices can take very different forms. For example, the side walls of the casket could have outwardly turned flanges, which in turn have nail holes or screw holes or the like, so that the caddy on this Way can be nailed to a formwork and when loosening the formwork in this way the storage box is released together with the formwork of the precast concrete part.

However, preferred are connecting means in the form of magnets, which are arranged in the vicinity of the ends or at the lateral edges of the storage box, in which case, of course, the formwork of a magnetizable metal or at corresponding positions must have a magnetizable metal. Appropriately, corresponding storage boxes are used with magnets in conjunction with metal plate formwork or metal rail formwork, wherein metallic rails form at least the frontal or narrow-side edge termination of precast concrete or concrete slabs.

The magnets can be accommodated in chambers or end sections in the vicinity of the end faces of the oblong cuboid deposit boxes. The top of the storage boxes or the chambers accommodating the magnets should be partially closed, at least in the region of the end sections containing the magnets, in order to encompass the upper edge of the magnets and to hold the magnets in the storage box. Alternatively, however, the magnets may also have such a shape that they are held in a form-fitting manner in the chambers.

According to a further preferred embodiment of the invention, a corresponding storage box has two openings for the passage of the free ends of two simultaneously accommodated in the storage box rope loops. Space and material saving is a variant in which the angle holder in the two openings are arranged mirror-inverted to each other such that the two cable eyes overlap each other.

If the storage device is designed as a longer rail, more than 2 openings are generally provided in the bottom of the rail, in which the cable loops are received in each case in the same or in changing orientation of the cable loops.

Figur 1

eine perspektivische Ansicht eines Verwahrkastens mit zwei darin aufgenommenen Seilschlaufen und entsprechenden Winkelhaltern,

Figur 2

eine perspektivische Ansicht des Verwahrkastens ohne Seilschlaufen und Winkelhalter,

Figur 3

einen Winkelhalter mit einer abgewinkelten Seilschlaufe ohne Verwahrkasten,

Figur 4

den Verwahrkasten nach Figur 1 in einem in eine Schalung eingesetzten Zustand,

Figur 5

eine fertige Betonwand mit einbetonierten Seilschlaufen und herausgenommenem Verwahrkasten, und

Figur 6

Schnittansichten verschiedener Varianten von Winkelhaltern.

Further advantages, features and possible applications of the present invention will become apparent from the following description of preferred embodiments and the associated figures. Show it:

FIG. 1

3 is a perspective view of a storage box with two cable loops and corresponding angle holders received therein;

FIG. 2

a perspective view of the storage box without rope loops and angle bracket,

FIG. 3

an angle holder with an angled cable loop without storage box,

FIG. 4

after the storage box FIG. 1 in a state inserted into a formwork,

FIG. 5

a finished concrete wall with embedded cable loops and taken out deposit box, and

FIG. 6

Sectional views of different variants of angle brackets.

One recognizes in FIG. 1 the total designated 100 storage device consisting of a storage box 10, two inserted into the storage box 10 angle holders 30 and one in each of the two angle holder 30 angled and salaried Seilschlaufe 20.

The storage box 10 has approximately the shape of an elongate, flat cuboid, but with slightly inclined side surfaces 12, 13, so that the top 14 of the storage box 10 defines a total of a slightly larger area than the opposite bottom. One could therefore describe the shape of the storage box as a truncated pyramid with an oblong rectangular plan. The inclination of the side walls 12, 13 with respect to the plane of the bottom 11 and / or the top 14 is in the illustrated embodiment in an order of between 75 and 85 °.

While there is no intention to be bound by actual measurement, it should be understood that the typical width of such a containment can vary between 50 and 80 mm, whereas the length varies over a wide range. In the present example, a storage box 10 is provided for two cable loops 20, which are angled towards each other and mutually overlap in their recorded in the storage box 20 state. The total length of an angled cable eye 21 is typically in the order of 80 to 150 mm, so that the two cable loops 20 together with the associated angle brackets 30 occupy a total base area of the floor 11, measured in the longitudinal direction of a measure between at least 120 and up to 250 or 300 mm or more.

In addition, here still a separated by a web or a partition wall chamber 19 is provided on each of the end sides of the storage box 10, for example, serves to receive a magnet 18 or other fastening means, so that the storage box with the rope loops 20 received therein in as simple as possible and quickly on a formwork 40 (see FIG. 4 ) can be attached.

Further details of the storage box can be seen on the basis of FIG. 2 , which shows in subfigures a and b the Verwahrkatsen in two different perspective views.

In FIG. 2a recognizes the Verwahrkasten obliquely in a perspective view of the bottom 11 of the storage box, while the storage box 10 in FIG. 2b is shown in a perspective oblique view of its open top 14.

It can be seen that the storage box 10 has approximately the shape of an elongated cuboid, however, the side walls 12, 13, starting from the bottom 11 are slightly inclined outwards, typically by 5 to 15 ° relative to a vertical to the ground, so that both in a longitudinal section as well as in a cross section in each case perpendicular to the plane of bottom 11 and top 14 a trapezoidal outer cross section of the storage box 10 results. This becomes particularly clear on the basis of FIG. 6 , Since the storage box is intended for multiple reuse, in the embodiment shown here it is made of either steel or some other stable material or e.g. B. formed as a relatively solid, injection-molded plastic part. The storage box 10 shown here has two bottom openings 15, wherein the lower outer edge of the bottom openings 15 is chamfered and also wherein the corner regions of the otherwise substantially rectangular bottom openings 15 are clearly rounded. The inclined surfaces 16 serve a secure seal with a corresponding "sealing cone" of a provided on an angle holder sealing flange 32, which will be described later in more detail. Here, the term "sealing cone" is also used here for a cross-sectionally substantially rectangular element, since the engagement of the inclined surfaces of the "sealing cone" 36 with the inclined surfaces of the bottom opening 15 in a similar manner has a sealing effect as in a cone with a circular cross-section.

In FIG. 2b can be seen the substantially open top 14 of the storage box 10, wherein approximately in the middle of the side walls 12 two opposite, inwardly projecting extract cam 17 can be seen. This extract cams are used to extract the Verwahrkasten 10 from a concrete bed with the aid of a hook-shaped auxiliary tool, for example, after the cable loops 21 have been released from the downers 35 and folded out into a position, as ultimately in FIG. 5 is shown. Often it will be possible to simply pull the storage box 10 by engaging behind the cam 17 with the fingers of one hand from the corresponding recess in the concrete. If necessary, however, a corresponding auxiliary tool can be used which engages behind the cams.

At the narrow ends of the custody box 10 can be seen also two chambers, which are filled by magnetic blocks 18. The magnetic blocks 18 may be potted with the storage box 10, but they can also be subsequently inserted and fixed in corresponding chambers, which were provided at a corresponding position at the ends of the storage box 10. These chambers are by a partition or a divider 19 of the angular holder 30 and the cable loops 21 receiving cavity of the storage box separated. Conveniently, the magnets 18 are fixed in the corresponding chambers of the storage box, that they just flush with the top 14 or are still set back slightly towards the top 14 and only when it touches a magnetic object, such as a formwork panel 40 from Metal, by the action of the relatively strong magnetic attraction with slight elastic deformation of the upper edge of the chambers in contact with the respective plate 40, so that the entire peripheral edge of the top 14 of the storage box 10 is pressed tightly against the formwork panel 40. In this way, you can do without a cover of the open top 14 to prevent that when casting a corresponding precast concrete part, in the formwork of the storage box is included with the cable loops 20, concrete penetrates through the open top 14 in the storage box, as already the dense system of the edge of the top 14 sufficient for this. The magnets could of course also be arranged at other positions, preferably in the edge region of the storage box. Likewise, an outwardly angled edge bottle of the storage box could have nail holes, an adhesive layer or other fastening aids for temporary attachment to a formwork.

FIG. 3 shows an angle holder 30 together with a cable loop 20 in a view without the storage box. The storage box 10 thus does not require any elements to hold the cable loop 20 in the angled position, in which the cable eye 21 is angled relative to the cable ends 22 by about 90 °. The angle holder 30 is z. B. is a plastic part, which is preferably produced by injection molding and contains the corresponding bushings and bending stops 35, which make it possible to keep the cable loop 20 in the overall position shown. The angle holder 30 consists essentially of a base 31, which, in particular in the FIGS. 4 and 6 can recognize on its underside still a lug 34 which simultaneously forms a bending stop for the cable loop, in which the cable ends 22 are guided substantially perpendicular to the side of the base and the bottom of a storage box 11. In this form, a corresponding angle holder 30, possibly also with locking or fixing elements for attachment to the edge of the opening 15 of the storage box 10, already known. The illustrated and described angle holder 30 according to the present invention differs from these conventional angle holders mainly by the circumferential sealing flange 32, which attaches to the lower edge of the base 31.

Further details of the angle holder 30 are in a sectional view according to FIG. 6a recognizable in a cut through FIG. 1 perpendicular to its longitudinal direction corresponds to a region which is in the vicinity of the open end side of the angle holder 30.

FIG. 4 shows a view into the interior of a formwork 40, wherein the storage device 100 according to the invention is attached to a front-side shuttering panel 40. As already mentioned, 10 magnets 18 can be arranged and fixed in the chambers at the ends of the storage box, which, if the formwork plate 40 is made of steel, securely hold the storage box 10 with the cable loops received therein to the formwork panel 40. The magnets and the corresponding chamber 18 or the upper edge of the chambers 18, which is partially formed by the web 19, can be designed and shaped so that an upper surface of the magnets slightly below the outer surface or top 14 of the storage box 10, so that the magnets press the peripheral upper edge of the top 14, which is otherwise open, tight and tight to the shuttering board. In this case, the chambers 18 and the magnets may be so dimensioned that with a slight elastic deformation of the edge of the chambers 18 just a contact between the magnet and the shuttering plate 40 is formed.

How to get in FIG. 3 clearly recognizes, protrude in this arrangement, the free ends 22 of the cable loops 20 substantially perpendicular to the surface of the formwork panel 40 and thus perpendicular to a later emerging end face of a precast concrete part in the space limited by the formwork in the free space, which is later filled with liquid concrete. In this case, the free ends of the rope 22 are enclosed in the concrete together with the ends firmly compressing squeezing sleeve 24 and concreted.

The Figures 6b and 6c show further variants of a corresponding angle holder with a slightly different flange shape.

Figures 6a-c are described below in the context of each other.

In FIG. 6a one recognizes the storage box 10 with an inserted angle holder 30 in cross section. It can be seen on average also continue the two sections of the cable eye 21, which are depressed by two opposite, flange-like hold-down 35 of the angle holder 30 that they are held in the opposite the cable ends 22 by 90 ° angled position of the cable eye 21.

It can be seen in the cross-sectional views of Figures 6a-6c in that the storage box 10 has relatively massive walls 12 and a corresponding floor 11, the storage box 10 in the illustrated embodiments having relatively solid walls, as would be typical of an injection molded plastic part, but the storage box is also made of steel or other stable material Material and of course can be produced in a smaller wall thickness. The outer surfaces of the walls 12 are opposite to a vertical inclined to the bottom 11 by about 10 °, so that an approximately trapezoidal outer cross-section of the storage box 10 or 10 'results. The storage box 10 in FIG. 6a points, as well as the two in FIGS. 6b and 6c Storage boxes 10 'have an approximately rectangular bottom opening 15, into which the angle holder 30 (or 30' or 30 ") is in each case tightly inserted. For the dense ice nets in the opening 15, the angle holder 30 has a lower area of its base 31 circumferential flange 32, which in the case of FIG. 6a is significantly chamfered at its outer edges, so that these beveled surfaces act as a kind of "sealing cone" 36, since the lower peripheral edge of the bottom opening 15 is chamfered in a similar manner. On the sealing flange 32 sit still in the vicinity of the corners of the sealing flange clamping bracket or locking elements 33 which have on its outside either a nose-like projection or at least a certain bulge and are chamfered at their upper ends, so that the angle bracket easily from below into the bottom opening 15 can be inserted, wherein the sealing cone 36 engages tightly and tightly against the beveled edge surface of the bottom opening 15 and the nose-like projections of the locking elements 33 finally engage behind the upper edge of the bottom opening 15.

Conveniently, the angle bracket 30 is inserted from below into the bottom opening 15 together with the already held therein angled cable loop 20. In order to insert the free end of the cable eye 21 in the caddy, must in addition to FIG. 3 The angle bracket is shown with the cable loop 20 and the cable eye 21 at first slightly tilted and introduced with the cable eye 21 through the bottom opening 15 into the storage box 10 and then the angle bracket is aligned accordingly and with its base part 31 and the locking elements 33 in the bottom opening 15th introduced until the in FIG. 6a shown position is reached. The cable eye 21 is then flat and approximately parallel to the bottom 11 in the storage box, as in FIG. 1 is shown. The same thing happens with the second cable loop 20 and the second angle holder 30 in FIG. 1 , wherein one cable eye 21 slips over the other cable eye 21. It is understood that the clear height of the storage box 10 is sufficient to accommodate both superposed eyelets therein without one of the cable lugs protrudes beyond the open top 14.

In the Figures 6b and 6c Variations in the design of the sealing flange are reproduced. In these embodiments, the bottom opening 15 need not have a tapered sealing surface. Instead, it lays down in the case of the embodiment according to FIG. 6b a sealing edge 36 'from below close to the outside of the bottom 11 at. A variant of this is in FIG. 6c shown in which the sealing edge is shown as upwardly angled sealing lip 36 ", which in the in FIG. 6c shown state under elastic bias on the underside of the bottom 11 is applied. All the rest of the details in the Figures 6b and 6c shown Embodiments are consistent with the variant already described FIG. 6a match.

In FIG. 5 recognizes a finished concrete part, which has been produced by means of the storage device according to the invention. It shows FIG. 5 only a section of a generally larger concrete slab 50, which may be used, for example, as a wall element in building construction. Along a front side of the in FIG. 4 Of course, a plurality of storage boxes 10 can be arranged next to or above one another at a distance, so that, accordingly, on an end face 51 of a concrete slab 50, as shown in FIG FIG. 5 is shown, at appropriate intervals several such cable loops or cable eyes 21 may protrude.

As you can see, the end face 51 of the precast concrete part 50 has a recess 52 after the storage box 10 has been removed from this recess. In this case, the storage box 10, after the cable loops 21 of the holders 35 of the angle holder 30 dissolved and in the in FIG. 5 shown unfolded position were brought up from the angle brackets 30 and withdrawn over the cable loops 21 away. The locking elements 33 have for this purpose deliberately only a relatively small nose-like projection or just a bulge without sharp projection, so that they can be solved by applying an acceptable and not too great force (ie by hand and without tools) from the edge of the bottom opening 15 when a corresponding train is applied to the storage box 10. The slightly inclined outer surfaces of the side walls 12, 13 of the storage box 10 also allow a relatively easy separation from the surrounding concrete concrete bed, especially when the storage box 10 is made of a superficially relatively smooth and poorly adhering to concrete material or with a corresponding Coating, painting or the like is provided. However, the adhesion of the walls 12, 13 and the floor 11 to the concrete of the finished part 50, which is also influenced by different external conditions, may necessitate the use of a tool for releasing the storage box. The lateral cams or projections 17 can serve as starting points for engaging behind by a tool.

Only the angle holder 30, whose lower lugs 34 are embedded firmly in the concrete together with the parallel, free ends 22 of the rope loops 20, remain in the precast concrete part 50. To connect multiple precast concrete 50 they are aligned with their end faces relative to each other so that the projecting from two precast concrete rope eyes 21 overlap, so that at least one reinforcing element can be pushed through the overlapping eyes. The end faces 51 of the respective precast concrete 50 are placed in accordance with dense spacing and the remaining joint is covered with a grout potted, which also fills the cavity 52 and thus produces a good, positive connection between the two parts, wherein the grout in the recess 52 adheres much better to the concrete surfaces of this recess than it on the walls of a recess 52 permanently remaining in the custody box 10 would be possible.

Claims (15)

1. Storage device (100) for rope loops (20) comprising a storage box (10), which receives at least one clamping part and an eye (21) of the rope loop (20), wherein the storage box (10) comprises a bottom (11) and side walls (12, 13) and wherein in the bottom (11) of the storage box at least one opening (15) for the passing through of free ends (22) of the rope loop (20) which protrude from the storage box and for receiving a portion of the clamping part is provided, wherein the storage box, apart from a bottom opening for passing through of the free ends of the rope loop, is in general completely closed and/or can be sealed with respect to a formwork, in order to avoid that the eye received in the storage box is encased by concrete, characterized in that after fixing the free ends (22) of the rope loop (20) in a concrete bed, the storage box (10) can be removed from the rope loop (20) and possibly from the clamping part connected thereto, wherein the clamping part is designed as an angle bracket (30), which keeps a rope loop (20), which consists of an eye (21) and two parallel free ends (22), in an angled condition, wherein the angle bracket (30) comprises a base (31), which receives and fixes the eye (21) partly, wherein the base (31) comprises a circumferential sealing flange (32), which is attached to the outer side of the bottom of the storage box (10), and wherein locking means for a temporary fixing of the angle bracket to the storage box are provided at the base and/or at the sealing flange, wherein the locking means are in detachable engagement with the edge of the bottom opening, such that they can be disengaged by means of a well-defined force, which is applied to the storage box perpendicularly to the bottom and away from the concrete bed, and wherein the storage box consists of a sufficiently stable and solid material, such that it can be detached from a concrete bed surrounding the outer sides of the bottom and the side walls and from the angle bracket, without being damaged.
2. Storage device according to claim 1, characterized in that the storage box (10) has in general an elongated cuboid shape.
3. Storage device according to one of claims 1 to 2, characterized in that the top side (14) of the storage box (10) opposite of the bottom (11) is at least partially open or comprises undercut recesses, or that at least one projection (17) is provided at the walls or at the bottom, and in each case for applying a pull out force to the storage box in order to remove it from a concrete bed.
4. Storage device according to one of claims 1 to 3, characterized in that the top side (14) of the storage box (10) opposite the bottom (11) has a larger total surface than the bottom (11), such that the side walls (12, 13), deviating from an exact cuboid shape, are slightly tilted outwardly with respect to the bottom (11).
5. Storage device according to one of the preceding claims, characterized in that at least the outer surfaces of the storage box (10) consist of an uniform material which little adhesion to concrete.
6. Storage device according to one of the preceding claims, characterized in that the sealing flange (32) has a circumferential surface which tapers towards the inner side of the storage box (10) in a pyramidal shape and which can suitably be inserted into a bottom opening (15) of the storage box (10) adapted to the circumferential surface.
7. Storage device according to one of the preceding claims, characterized in that the sealing flange (32) has a protrusion of at least 5 mm with respect to the base (31) measured in the plane of the sealing flange (32).
8. Storage device according to one of the preceding claims, characterized in that the sealing flange (32) in general completely surrounds the base (31).
9. Storage device according to one of the preceding claims, characterized in that clamping brackets (33) for a temporary fixing of the angle bracket (30) to the storage box (10) are provided at the base (31) and/or at the top side of the sealing flange (32).
10. Storage device according to one of the preceding claims, characterized in that the storage box (10) is designed as a reusable storage box (10).
11. Storage device according to one of the preceding claims, characterized in that the storage box (10) consists of metal, in particular steel, or of a plastic material which is resistant against weather effects and fluid concrete material.
12. Storage device according to one of the preceding claims, characterized in that the storage box (10) at its top side (14) opposite the bottom (11) comprises connecting devices (18) for the connection with a formwork.
13. Storage device according to one of the preceding claims, characterized in that the connecting devices are magnets (18) located near the ends or laterally at the edge of the storage box (10).
14. Storage device according to one of the preceding claims, characterized in that the bottom of the storage box (10) comprises two openings (15) for passing through of the free ends of two rope loops (20) which can commonly be received in the storage box (10).
15. Method for the production and connection of precast concrete parts, wherein at least one storage box having at least one angled rope loop is connected to a partition wall of a formwork from the inside and is cast with concrete, wherein an eye of the rope loop received in the storage box is folded out towards a side of the storage box which is open towards an outer surface of the precast concrete part after hardening of the concrete and in order to connect adjacent precast concrete parts, characterized in that a storage box according to one of claims 1 to 14 is used, which is removed from the precast concrete part for reuse after folding out of the eye.

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