EP0980940A1 - Spacer for concrete constructions reinforcements - Google Patents

Abstract

A foundation body (6) has a detent socket for fixing a reinforcement iron as well as a detent element (12) in which a cross iron can be fitted to run transversely to the reinforcement iron. The reinforcement iron and cross iron can be inserted in the detent socket and detent element from the same direction. A spacer (10 extends in an extension of the insert direction of the cross iron.

Description

The invention relates to a device for standing two rod-shaped Parts, for example a reinforcement in a mold in particular for precast concrete elements with a basic body that has a snap-in holder for Attachment of a reinforcing bar and with at least one Spacer is provided.

Precast concrete parts such as ceiling or wall elements are made on large Formwork tables manufactured. The first step on these formwork tables is Reinforcement laid, which must have the precast concrete. This reinforcement must be spaced from the surface of the formwork table, so that concrete poured onto the formwork table flows under the reinforcement can. In the set state, the one flowing under the reinforcement then forms Concrete which is standard for the corrosion protection of the reinforcement provided coverage.

Unterstellböckchen" oder Abstandhalter" genannt.Corresponding devices with which the reinforcement by stands on the formwork table are appropriately spaced from it are known and are, for example

Undercarriage "or Spacer "called.

The mentioned reinforcement for large precast concrete elements such as ceilings or walls must ensure sufficient stability of the precast concrete be provided in two mutually transverse directions. To meet this requirement, reinforcement meshes are used, for example intended. Such reinforcement meshes are prefabricated in the factory, by welding reinforcement bars in a crossed position become. Reinforcement meshes are relatively expensive and still have the disadvantage that they are in areas of recesses in the precast concrete, such as door or window cutouts interrupted in wall elements need to be cut by punching holes in the mats here become. On the one hand, this is relatively complex and, on the other hand, they are cut mat parts can no longer be used and are therefore undesirable Waste.

Instead, the crossed reinforcements are usually used instead Location of longitudinal reinforcing bars and across them trending cross iron manufactured, cut to length become. About cutting can be done without major problems Recesses are provided in the reinforcement.

It is then essential, however, that the crossed one on top of the other Do not slide reinforcement and crossbars against each other.

For this purpose it is known, the crossing reinforcement and crossbars to be welded on-site at their crossing point, but this in particular is relatively expensive because of the expenditure on equipment.

Alternatively, the reinforcement and crossbars can be attached to the crossing points are fastened together, but for what again a lot of personnel is required. It is easier there, corresponding To provide spring wire structures that cross the iron on cling to the rebar they cross. The attachment of this Spring wire constructions are also very personnel-intensive because it cannot be automated.

Approaches already exist in this context, and there are corresponding approaches Clamp over the spacers. This is done under a reinforcement already laid at a crossing point a spacer set so that the rebar in one on top of the spacer extending groove comes to rest. The to the The first reinforcement bar is then a reinforcement Cross iron formed across the first reinforcing iron placed the spacer and in the corresponding intended Snap-in receptacles on the spacer is pressed in, which simultaneously means that first reinforcing bar is fixed in the groove by passing it through the cross bar is held down.

The disadvantage of these known spacers is that they are only available on site and can only be assembled manually, which also means a high level of personnel Require assembly effort.

The object of the present invention is therefore to provide a corresponding one Spacers, that is, a corresponding device for standing up Reinforcement from reinforcement and cross bars in a mold for precast concrete parts to specify, in which the assembly effort is less, so that lower costs are to be set for this.

This object is achieved in that the corresponding Stand-up device next to a snap-in holder for attachment of a reinforcing bar has a further locking element in which the cross bar essentially transverse to the reinforcing bar can be snapped into place.

The advantage of the invention is that the stand device is due to the snap-in receptacle can already be attached to the rebar can before it is placed on the formwork table. In particular is this assembly can be carried out mechanically, which means not only manual activities can be saved, but also a more even Distance between two stand-up devices must be ensured.

Those already in this way with spacers or stand-up devices snapped onto them provided rebar can then on the Be laid out in circuit boards and the corresponding crossbars will then be simply pressed into the locking elements of this spacer according to the invention, which also does not require a lot of personnel.

The easiest way to place and lock the crossbars from above takes place, it is advantageous if the spacer causing the distance the stand-up device is essentially in the extension of the insertion direction of the cross iron, namely in the downward direction the formwork table.

Basically, it is also conceivable that the spacer essentially extends from the main body in the direction from the crossbar and reinforcing bars are insertable. This is especially so useful if the mounting of the stand device is only provided if reinforcing bars and cross bars already cross each other, the spacer then leads past the two irons when the insurgent device is at the intersection of is plugged on top and thus between the formwork table and the then in rebar and crossbar in the raised position.

In the latter variant in particular, the rebar is used and the cross iron from the same direction into the snap-in receptacle or the locking element inserted and successively independently locked together.

In principle, spacers can also be attached to a base body Both of the above directions can be provided, so that such Stand-up device can be used more universally.

In a preferred embodiment, the locking element for Crossbars from two locking arms that extend towards each other in the direction of extension of the cross iron are spaced. This spacing causes the Device in its orientation extending parallel to the transverse iron not because of two mutually spaced attack points can be twisted. These locking arms for the cross iron extend in the preferred embodiment to the side of the area Locking receptacle for the rebar, which makes the locking arms very long run and have greater softness, which allows to fix crossbars of different diameters in the locking element.

In a particularly preferred embodiment, the base body not only a spacer is provided, with which on the stand a distance to a bottom side is guaranteed, but it is still a further spacer is provided, which is in relation to the first spacer extends in a normal direction. This allows a distance to the boundary walls the concrete form are made possible, so that here too necessary concrete coverage is guaranteed.

The said first and second spacers are preferably integral formed in a disc in which the base body in particular is arranged centrally. This disc can advantageously be used in a automatic feeding of spacers as a guide and orientation element use to enable a positionally accurate feeding.

It is also proposed that a spacer be provided which in turn turns in the normal direction to that of the above Spacers spanned the plane. So that can Stand-up devices on both long and short sides in identical Position are used, which facilitates the automatic assembly.

By doing the spacer an extension on both sides of the spacer plane has, the stand device according to the invention without being rotated, even on opposite sides of the concrete form be used.

The last described variant with itself from the actual crossing point of reinforcing bars and cross bars in all directions extending spacers or spacers also has the advantage that there is a protrusion all around when used in a reinforcement is. This means that when this reinforcement is placed on a vibrating table prevents the reinforcement itself directly on the longitudinal and transverse walls of a Concrete form strikes. So it is a significant noise reduction possible.

Figur 1

die Seitenansicht einer erfindungsgemäßen Aufständervorrichtung;

Figur 2

die Vorderansicht einer Aufständervorrichtung gemäß Figur 1;

Figur 3

eine andere Ausführungsform der Aufständervorrichtung in der Seitenansicht;

Figur 5

eine Seitenansicht einer Aufständervorrichtung gemäß Figur 1 mit eingelegten Bewehrungs- und Quereisen;

Figur 4

die Vorderansicht einer Aufständervorrichtung gemäß Figur 4;

Figur 6

Aufsicht auf einen Schaltisch mit Bewehrung, die mit erfindungsgemäßen Vorrichtungen aufgeständert ist;

Figur 7

Seitenansicht eines Bewehrungseisens mit erfindungsgemäßen Aufständervorrichtungen und aufgelegten gekreuzten Quereisen;

Figur 8

Seitenansicht einer Aufständervorrichtung mit scheibenartigen Distanzhaltern und einem Abstandhalter.

Further advantages and features of the invention result from the following description of exemplary embodiments. It shows

Figure 1

the side view of a stand device according to the invention;

Figure 2

the front view of a stand device according to Figure 1;

Figure 3

another embodiment of the stand device in side view;

Figure 5

a side view of a stand device according to Figure 1 with inserted reinforcement and crossbars;

Figure 4

the front view of a stand device according to Figure 4;

Figure 6

Top view of a formwork table with reinforcement, which is supported by devices according to the invention;

Figure 7

Side view of a reinforcing bar with stand devices according to the invention and crossed crossbars placed thereon;

Figure 8

Side view of a stand-up device with disk-like spacers and a spacer.

6 shows a formwork table 1 for producing a precast concrete part, which is a wall element that one Has door cutout 2 and a window cutout 3. On the formwork table 1 delimited by longitudinal walls 17 and transverse walls 18 is a Reinforcement designed from a variety of parallel to each other Reinforcing iron 4 exists as well as this reinforcing iron cross bars crossing at an angle of 90 ° 5. The reinforcing bars and the crossbars are in the area of the door cutout 2 and the window section 3 cut off, so that no reinforcement in these cutouts runs. The cutouts are by longitudinal racks 19 or transverse racks 20 limited.

The formwork table 1 is essentially horizontal (FIG. 6 forms one) Supervision), so that a reinforcement placed on it can be erected must, so that poured concrete on the formwork under the reinforcement can flow to the necessary coverage in the finished concrete part ensure that are normally provided for corrosion protection got to. The reinforcement and crossbars are for this elevation at the locations marked with circles or squares in FIG. 6 provided with stand-up devices.

Such a stand-up device is in a side view in FIG. 1 or shown in the front view in Figure 2. You can recognize one there Base body 6, which has a catch receptacle 7, in which, as in FIG shown a rebar 8 can be attached. The rest area 7 has two detent springs 9 directed into it, on which over the reinforcing iron 8 is pressed into the locking receptacle 7 and which then pulls the reinforcing iron 8 out of the latching receptacle 7 prevent. A spacer extends from this base body 6 10 in the direction in which the reinforcing iron 8 in the locking receptacle is introduced.

It can also be seen that a spacer 11 is provided, which is extends from the base body 6 in the direction from which the rebar 8 is introduced.

In this respect, one is independent of whether the reinforcement bar 8 is from above is inserted into a stand-up device or whether a stand-up device is pushed over a rebar 8 from above. In both cases is due to the spacer between reinforcing bars 8 and the formwork table 1 a distance necessary for the subsequent covering available.

It can also be seen in FIGS. 1 and 2 that the stand device in addition to the locking receptacle 7 for fastening the reinforcing iron 8 has a further locking element 12, in which a substantially transverse to the reinforcing iron 8 extending cross iron 13 can be snapped. In the Examples shown here, this locking element consists of two Locking arms 14, which - as can be seen in Figure 2 and Figure 5 - are spaced from one another in the direction of extension of the transverse iron 13. This creates both between the left and between the right locking element and the crossbar 13 two independent locking points, so that the stand device in parallel to the cross iron 13 extending orientation can not twist.

The stand-up device is parallel to the cross iron 13 Alignment formed as a disc, with also to the side of the locking receptacle 7 or of the one receiving it Base body 6 extend spacers 21 and 22 respectively. The extension is running essentially normal to the vertical extension of the former Spacers 10 or 11. With these side spacers a reinforcing iron 8 is pressed into the snap-in receptacle 7 if necessary, not only with respect to one lying under the spacer 10 Base or base plate spaced apart but also to one side next to the rack parallel to the reinforcing bar 8 transverse wall or crossover. This not only ensures that the concrete is covered properly guaranteed in this direction as well a usual shaking of the formwork table prevents the reinforcing bar 8 strikes against said wall or rack, which causes a lot of noise.

In the example shown in Figure 3, the locking arms 15 are opposite the locking arms 14 of Figure 1 significantly extended so that they are larger Have softness. This enables 16 crossbars in the locking element to attach different diameters, since the locking arms 15 the can compensate for different diameters due to their elasticity.

In Figure 7, a reinforcing bar 8 is shown, on which in a precisely defined Distance mechanically shot upright devices according to Figure 3 were. This rebar is then as in Figure 6 shown placed on a formwork table 1 and then corresponding Cross iron 5 pressed into the corresponding locking elements 16, so that it is then sufficiently firm over the stand device are connected to the reinforcing bars 8.

This invention thus has the ability to quickly and inexpensively reinforcement to manufacture for wall elements.

It should also be mentioned that in the reinforcement shown in Figure 6 it is sufficient to use the reinforcement bars and cross bars respectively only at their end points with stand-up devices according to the invention for non-slip fixation against each other, the here with Circles are provided. In the places marked with squares Corresponding stand-up devices are only provided to a To prevent sagging of the reinforcement in the intermediate area.

8 is one of the end points provided with a circle in FIG. 6 shown in side view. One recognizes again how a Reinforcing iron 8, which is inserted in a snap-in receptacle on the base body 6 is supported on the formwork table 1 via a spacer 10. In the example shown here is also on the cross iron 5 in A spacer 23 integrally formed on the locking element 15 holding the locking element. With this becomes both the crossbar 5 and the end 24 of the reinforcing iron 8 prevented from coming into contact with the transverse wall 18. On the one hand, this results in the cross iron 5 and the transverse wall 18 a necessary for covering the cross iron 5 with concrete Distance is guaranteed and on the other hand, even if the Formwork table 1 prevents the end 24 of the reinforcing iron 8 or but the cross iron 5 under undesired sound generation against the Cross wall 18 strikes. In particular from the aspect that the stand device and with it the one-piece molded spacer are made of plastic, is one in the manufacture of the precast concrete element disturbing sound source switched off.

Claims (10)

Device for standing up two rod-shaped parts, for example a reinforcement in a casting mold, in particular for precast concrete parts, with a base body (6) which has a snap-in receptacle (7) for fastening a reinforcing iron (8) and which has at least one spacer (10; 11) is provided
characterized,
that it has a latching element (12) in which a crossbar (13) which extends essentially transversely to the reinforcing bar (8) can be latched. Device according to claim 1,
characterized,
that the reinforcing iron (8) and the transverse iron (13) can be inserted from the same direction into the locking receptacle (7) or the locking element (12). Device according to claim 1,
characterized,
that the spacer (10) extends substantially in the extension of the direction of insertion of the crossbar (13). Device according to claim 1,
characterized,
that the spacer (11) extends essentially from the base body (6) in the direction from which crossbars (13) and reinforcing bars (8) can be inserted. Device according to claim 1,
characterized,
that the locking element (12) consists of two locking arms (14, 15) which are spaced apart in the direction of extension of the crossbar (13). Device according to one or more of the preceding claims,
characterized,
that the locking arms (15) for the cross iron (8) extend into the area to the side of the locking receptacle (7) for the reinforcing iron (8). Device according to claim 3 or 4,
characterized,
that a further spacer (21, 22) is provided which extends normally to the first spacer (10, 11). Device according to claim 7,
characterized,
that the first (10, 11) and second (21, 22) spacers are integrally formed in a disc. Device according to claim 7,
characterized,
that a spacer (23) is provided which extends in the normal direction to the plane spanned by the spacers (10, 21; 11, 22). Device according to claim 9,
characterized,
that the spacer has an extension on both sides of the spacer plane.

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