EP2247346B1 - Arrangement for producing a connection possibility, in particular for a sprinkler on a concrete or reinforced concrete floor, and method therefor - Google Patents

Abstract

The invention relates to an arrangement for producing a connection possibility, in particular for a sprinkler on a concrete or reinforced concrete floor, comprising at least one pipeline (1) that is connected to a first connection area (2a) of a fitting (3), a fixing element (4a, 4b) that can be detachably connected to a second connection area (2b) of the fitting (3), a box (5) that surrounds the fixing element (4a, 4b) in parts and that is arranged on a flange (6) of the second connection area (2b) of the fitting (3). Said fixing element (4a, 4b) can be fed through a casing (7) for delimiting the concrete or reinforced concrete floor and can be fixed on the casing (7) of the concrete or reinforced concrete floor by means of a fixing element (8) on its side facing away from the fitting (3).

Description

The invention relates to an arrangement for producing a connection possibility, in particular for a sprinkler on a concrete or reinforced concrete floor and a method for producing the connection possibility.

Such arrangements are known in the prior art. For example, this describes DE 101 40 942 C1 a supply system for extinguishing agent, which consists of a feed pipe in a building material between a connection and a nozzle for spraying an extinguishing agent, wherein between the connection for the extinguishing agent and a connection for the nozzle in the building material, a flexible tube is arranged. In the embodiment shown in Figure 3 describes the DE 101 40 942 C1 an arrangement for producing a connection for a sprinkler on a concrete floor with a flexible pipe, to which an extension piece is attached, which is passed through a shuttering to the boundary of the concrete ceiling. On the casing is a seal over which the attachment to the casing can be made and in which the end of the pipe and a part of the extension piece are added.

Other such arrangements exist for. B. from a lower part of a sprinkler junction box, which is fastened by means of screws or nails on a formwork. The connection cable is connected to a connection area of a fitting. At a second connection region of the fitting, a transition piece is arranged, which has a receptacle for a sprinkler on the side facing away from the fitting. About this recording a top of a sprinkler junction box is arranged to prevent the ingress of liquid concrete in the area of the inclusion of the sprinkler in the manufacture of concrete or reinforced concrete slab. Furthermore, a brass closure is placed in the receptacle for the sprinkler, so that the recording is protected from dirt. The compound thus prepared is connected to the lower part of the sprinkler connection box in such a way that the upper and lower part of the sprinkler connection box are connected to one another in a concrete-tight manner.

A disadvantage is seen in the fact that after arranging a plurality of arrangements for the possibility of connecting sprinklers on a formwork also due to the large number of lines that are laid on the casing, it is difficult to detect the exact position and to check whether all connection options were laid. Furthermore, there is the problem that after curing of the concrete, the casing is removed and the lower parts of the sprinkler connection boxes are attached to this. Thus, these are removed with the casing from the tops of the sprinkler connection boxes, without special care must be taken at these locations in order to avoid damage to the tops that remain in the concrete floor.

Furthermore, it is in most cases not possible to reuse the lower parts of the sprinkler junction boxes in another ceiling, because they are destroyed or damaged due to the force.

This is where the invention, which has set itself the task of avoiding the disadvantages of the prior art.

According to the invention this object is achieved by the combination of the features of claim 1.

In the arrangement according to the invention, the disadvantages of the prior art are avoided in that the fastener is passed through the casing and thus controlling the position of each connection option from the bottom is possible at any time, without a time-consuming search in the laid on the casing piping and Reinforcements is necessary.

Since the fastener partially encloses the box rests on the casing and is pressed over the fastener by means of the fastener against the casing, no concrete can penetrate into the can when pouring the concrete and thus the fastener and the second terminal portion of the fitting are kept free of Betonanlagerungen , Thus, the fastener after curing of the concrete and the removal of the casing is removable and reusable.

By fastening the arrangement via a fastening means arranged on the side facing away from the fitting, the lower part of a sprinkler connection box can be dispensed with, since this is replaced by the shuttering. Thus, an additional material saving is possible.

It has been found that the use of a two-part fastener can be beneficial. This is especially true if the diameter of the second connection region of the fitting is greater than the connection region of the sprinkler to be used. In order to reduce the number of different fasteners it has been recognized that an adapter can be used for the corresponding diameter reduction, which is matched to the diameter of the sprinkler. Thus, this adapter can also be used immediately for connecting to the sprinkler. However, since the sprinkler is located at the bottom of the concrete or reinforced concrete deck, the length of the adapter can not be designed to permit attachment to the side of the casing facing away from the fitting.

To achieve this, however, therefore, an extension element is provided which is connected to the adapter. The extension elements are therefore only necessary in the diameter dimension of the diameter of the connection areas of the sprinklers. In this embodiment, the adapter is completely surrounded by the can.

Desirably, screw connections between the fitting and fastener or fitting and adapter and / or adapter and extension element allow easy assembly and disassembly.

It has been shown that when the fastener on the side facing away from the fitting has a thread, a continuous attachment by means of the fastening means is possible. Thus, the box can be pressed defined against the shuttering.

In this context, it has also been shown that it is favorable if the fastening means is a female threaded nut. This can be screwed onto the threaded portion of the fastener and thus provides a simple and cost-effective way of attachment.

It may be advantageous to arrange a washer between the nut and the casing in order to prevent penetration into the usually made of wood casing and to ensure easy disassembly. Also, a too large opening in the casing can be covered with the washer, so that a secure tightening of the fastening means, in particular the mother can be ensured.

Furthermore, the invention comprises a method for producing a connection possibility for a sprinkler on a limited by a formwork concrete or reinforced concrete ceiling.

The method provides that first a fastener is connected to a first terminal portion of a fitting. The fitting can be a bow or branch, in particular a T-piece. Thereafter, a can is arranged via the fastening element, which is essentially cylindrical and has at one end a wall provided with an opening. The breakthrough is designed so that the can is tightly applied to a collar of the first connection area of the fitting. The cylindrical portion of the can surrounds a part of the fastening element, so that an annular cavity is enclosed.

The fastener overhangs the can after it abuts the collar of the first port of the fitting. This projecting portion of the fastener is then passed through an opening in the formwork. For this it is necessary in advance that this opening is introduced into the mostly made of wood casing. After the fastener has been passed through the opening, it is fastened on the side facing away from the fitting of the casing by means of a fastening means. Thereafter, the connection between at least one water pipe and a second connection region of the fitting is made. Now further laying work can be carried out on the shuttering. Also, reinforcement mats can be introduced, which achieve an increase in the stability of the ceiling. Thereafter, the concrete is placed on the formwork. This can not penetrate into the can, which is thereby pressed onto the casing by the attachment by means of a fastening means on the side facing away from the fitting, so that no concrete can reach the second connection region of the fitting and the fastener.

After curing of the concrete, the fastener can be removed from the fitting. Thus, the shuttering can be removed from the ceiling without regard to the connection possibilities for the sprinklers.

Subsequently, a sprinkler is connected to the first connection area of the fitting. Since the sprinkler body must be located below the ceiling, it may be necessary to insert an adapter between the sprinkler and the first connection area of the fitting. This adapter can be designed so that also diameter differences between the connection areas of the fitting and the sprinkler can be bridged. In this regard, it has been recognized that the adapter is connected either first to the sprinkler and then both together to the first port of the fitting, or first to connect the adapter to the first port of the fitting and then the sprinkler to the adapter.

It has also been shown that it can be advantageous if the fastening element is constructed from two parts. In this case, the fastening element consist of an adapter and an extension element. Since it is necessary in most applications to arrange an adapter between the first connection region of the fitting and the sprinkler, this can already be introduced as part of the fastening element.

Since this adapter is completely surrounded by the box, it is not possible to pass through the formwork. To still ensure this, the adapter is connected to an extension element that bridges the missing length. It has been recognized that both the adapter with the first terminal portion of the fitting or first the adapter with the extension element can be connected.

Since the extension element has to be removed again after the concrete has hardened in order to attach a sprinkler, a releasable connection, in particular a screw connection, is necessary between the adapter and the extension element.

Thus, it is possible to remove only the extension element after curing of the concrete and then connect a sprinkler with the adapter.

In order not to look into the can after mounting the sprinkler, it has proven to be beneficial before installing the sprinkler to arrange a cover on the box on the ceiling, which has a passage for the sprinkler. This cover can also be attached to the can / ceiling by means of the sprinkler.

Figur 1 -

Schnitt durch eine an einer Schalung montierte erfindungsgemäße Anordnung zum Herstellen einer Anschlussmöglichkeit, insbesondere für einen Sprinkler an einer Beton- oder Stahlbetondecke

The invention will now be described in more detail on a non-limiting this embodiment. It shows:

FIG. 1 -

Section through a mounted on a formwork arrangement according to the invention for producing a connection option, in particular for a sprinkler on a concrete or reinforced concrete ceiling

In FIG. 1 is a section through a mounted on a formwork (7) inventive arrangement for producing a connection option shown. The arrangement has a fitting (3), which is T-shaped, with three connection areas (2a, 2b). But it is also possible that the fitting (3) has only two connection areas (2a, 2b), so that no forwarding of the fluid to further arrangements is possible. On two of the connection areas (2b) of this example, pipelines (1) are arranged, which in this example are fixed to the fitting (3) by means of sliding sleeves. At the still free connection area (2a) of the fitting (3), a fastening element (4a, 4b), which consists of an adapter (4a) and an extension element (4b), releasably secured.

Both fitting (3) and adapter (4a) and adapter (4a) and extension element (4b) are connected to each other via a screw connection. The adapter (4a) is designed in this example to be a kind of reducer, since the connection area (2a) of the fitting (3) has a larger dimension than the sprinkler to be attached later.

Furthermore, the arrangement has a can (5) which surrounds the fastening element (4a, 4b) in regions. This can (5) is arranged on a collar (6) of the connection area (2a) of the fitting (3) which is not connected to a pipeline (1), so that its position relative to the fitting (3) is defined. In this embodiment, the can (5) made of metal, but there are also other materials conceivable that meet the requirements in case of fire and cause no functional restrictions of the sprinkler in case of fire. It is also possible, as in this example, to place a seal (12) between the can (5) and the collar (6) of the fitting (3) to safely prevent the ingress of concrete at this point.

The FIG. 1 also shows a formwork (7) through which the fastening element (4a, 4b), in particular the extension element (4b) protrudes. For this purpose, the formwork (7) has an opening (9) which is substantially identical in shape and surface area to the cross-section of the fastening element (4a, 4b), in particular of the extension element (4b).

On the side facing away from the fitting (3) of the casing (7), a fastening means (8) in the form of a nut is arranged on the fastening element (4a, 4b). The latter is connected to the fastening element (4a, 4b), in particular the extension element (4b), via the thread situated in the embodiment facing away from the fitting (3) at the end of the extension element (4b). But there are also other fastening means (8), such as terminals or the like possible.

From the FIG. 1 can also be found that between the casing (7) and the nut as a fastening means (8) a washer (10)) is arranged with a larger diameter than the mother. This prevents that when tightening the nut this in the casing (7), which is usually made of wood, digs and thus complicates a later release.

In order to be able to easily detach this from the adapter (4a) during disassembly of the extension element (4b), it has been shown that it is advantageous if an easily detachable sealing means, in particular a Teflon tape, is introduced into the thread. In contrast, the adapter (4a) when disassembling the extension element (4b) should not be unscrewed. Also, the adapter (4a) should be fluid-tightly connected to the fitting (3). For this purpose, the use of a hard-to-release sealant, especially hemp has proven to be beneficial.

This in FIG. 1 illustrated arrangement for producing a connection option, in particular for a sprinkler on a concrete or reinforced concrete ceiling, is assembled step by step. For this purpose, first a connection region (2a) of the fitting (3) is connected to the adapter (4a) via a screw connection. It can be introduced into the thread for sealing hemp, which expands by fluid intake and thus seals the connection. But there are also other sealants conceivable. In this connection, it is also possible to seal the connection between adapter (4a) and connection region (2a) of the fitting (3) by means of an additional or sole adhesive connection.

When using a one-piece fastener, a detachable connection between the connection portion (2a) of the fitting (3) and the fastener is necessary because the fastener must be removed after completion of the concrete or reinforced concrete ceiling.

After the adapter (4a) has been connected to the connection region (2a) of the fitting (3), in this example the extension element (4b) is detachably connected to the adapter (4a) via a screw connection. The connection region of the connecting element (4b) to the adapter (4a) is designed in the same diameter as the later to be used sprinkler. Due to the division of the fastening element (4a, 4b), it is possible to use only different adapters (4a) for different dimensions of the connection regions (2a) of the fitting (3), whereas in the number of variants the extension element (4b) only applies to the different sprinkler dimensions must be coordinated.

Now the can (5) with a seal (12) on the fastening element (4a, 4b) pushed until the can (5) with the seal (12) on the collar (6) of the connection portion (2a) of the fitting (3 ) is present. However, it is not mandatory to use a seal (12). This is particularly advantageous if the nature of the concrete requires additional sealing. Thereafter, the fastening element (4a, 4b), in particular the extension element (4b) is passed through an opening (9) introduced into the formwork (7). The opening (9) corresponds approximately to the cross section of the fastening element (4a, 4b), in particular of the extension element (4b). Now the fastening element (4a, 4b), in particular the extension element (4b) protrudes on one side of the casing (7) and on the other side of the casing (7) the can (5) is in contact with the formwork (7) ,

Since during the introduction of the concrete for a concrete or reinforced concrete ceiling the fitting (3) with the adapter (4a), the extension element (4b) and the box (5) would float, is on the side facing away from the fitting (3) of the shuttering ( 7) a fastening means (8) with the fastening element (4a, 4b), in particular connected to the extension element (4b). In this example, the connection is designed as a screw connection, wherein the fastening element (4a, 4b), in particular the extension element (4b) on its side facing away from the adapter (4a) has a thread and the fastening means (8) is designed as a nut. To simplify the subsequent release of the nut, a washer (10) is arranged between the casing (7) and nut.

Now the box (5) on the casing (7) is fixed on the fastening means (8), so that during the introduction of the concrete, these can not float and no concrete between the shuttering (7) and can (5) can penetrate.

This process is repeated for all arrangements for establishing a connection possibility for the concrete or reinforced concrete floor to be equipped. After all arrangements have been made, it is possible to check from the bottom of the casing (7) whether all positions correspond to the plan. This is particularly easy because the fastening elements (4a, 4b), in particular the extension elements (4b) and the fastening means (8) on the side facing away from the fittings (3) of the casing (7) are visible and the position is thus easily recognizable ,

following the positioning and fastening of the fitting (3) with the fastening element (4a, 4b), the box (5) and the fastening means (8), pipelines (1) are connected to the still free connection area (s) (2b ) connected. This is generally done by widening the pipe end and sliding it onto the connection area (2b) of the fitting (3). Thereafter, a compression of the pipe end with the fitting (3) is performed. This can be done via a radially compressible compression sleeve, or by the use of a sliding sleeve (11).

The pipes (1) are usually laid so that between the individual arrangements a closed ring with a one-sided or two-sided feed or individual strands, which are fed from one side, arise. These arrangements result in the fitting configurations to be used for the individual arrangements.

After all pipes (1) have been connected, a pressure test is carried out, in particular according to VdS CEA 4001. This makes it possible to detect and eliminate possible leaks before the concrete is introduced. In this case, the fastening element (4a, 4b) serves as a plug which seals against the environment the connection area, at which the sprinkler is later connected, and thus enables the pressure test. If no or a pressure drop in the tolerance range is detected, the concrete can be placed on the casing (7).

It is also possible before the introduction of the concrete even more not necessary for a sprinkler system piping, as well as cables and reinforcing elements, in particular reinforcing mats or the like to bring.

After the concrete has been introduced, another pressure test is carried out, in particular according to VdS CEA 4001. This serves to control the tightness. Thereafter, the concrete must dry out and harden. Once this is done, the fastening means (8), in particular the nuts can be removed. Now the shuttering (7) and the fastening elements (4a, 4b), in particular the extension elements (4b) can be dismantled. Following this, a sprinkler is connected to the free connection area (2a) of the fitting (3) or the adapter (4a). In cases where, from an optical point of view, the can (5) should not be visible in the concrete or reinforced concrete ceiling, a cover can be arranged before attaching the sprinkler.

Claims (13)

1. Arrangement for producing a connection possibility, in particular for a sprinkler on a concrete or reinforced concrete floor, comprising

   - at least one pipeline (1) which is connected to a first connection region (2a) of a fitting (3),

   - a fastening element (4a, 4b) which is detachably connected to a second connection region (2b) of the fitting (3),

   - a box (5) which surrounds the fastening element (4a, 4b) in certain regions and which is arranged on a collar (6) of the second connection region (2b) of the fitting (3), and

   - a shuttering (7), wherein

   - the fastening element (4a, 4b) is led through the shuttering (7) for delimiting the concrete or reinforced concrete floor and, on its side facing away from the fitting (3), is fixed to the shuttering (7) of the concrete or reinforced concrete floor using a fastening means (8).
2. Arrangement according to Claim 1, characterized in that the fastening element (4a, 4b) consists of two parts, in particular an adapter (4a) and an extension element (4b), which are detachably connected to one another.
3. Arrangement according to Claim 1 or 2, characterized in that the fitting (3) and the fastening element (4a, 4b) or the fitting (3) and the adapter (4a) and/or the adapter (4a) and the extension element (4b) are connected by a screwed connection.
4. Arrangement according to at least one of the preceding claims, characterized in that the fastening element (4a, 4b) has a thread on the side facing away from the fitting (3).
5. Arrangement according to Claim 4, characterized in that in that the fastening means (8) takes the form of a nut.
6. Method for producing a connection possibility for a sprinkler on a concrete or reinforced concrete floor delimited by a shuttering (7), comprising the following method steps:

   - connecting a fastening element (4a, 4b) to a first connection region (2a) of a fitting (3),

   - arranging a box (5), which encloses the fastening element (4a, 4b) in certain regions, on a collar (6) of the first connection region (2a) of the fitting (3),

   - leading the fastening element (4a, 4b) through an opening (9) in the shuttering (7),

   - fastening the fastening element (4a, 4b) to the shuttering (7) using a fastening means (8) which is arranged on the side of the shuttering (7) facing away from the fitting (3),

   - producing a connection between at least one water line (1) and a second connection region (2b) of the fitting (3), and

   - pouring the concrete onto the shuttering (7).
7. Method according to Claim 6, characterized in that, after the concrete has cured, the fastening element (4a, 4b) is removed from the fitting (3).
8. Method according to Claim 7, characterized in that a sprinkler is then connected to the first connection region (2a) of the fitting (3).
9. Method according to Claim 8, characterized in that, prior to connecting the sprinkler, the latter is connected to an adapter (4a) and the adapter (4a) is connected to the first connection region (2a) of the fitting (3).
10. Method according to Claim 6, characterized in that the fastening element (4a, 4b) consists of two parts, in particular an adapter (4a) for connecting to the first connection region (2a) of the fitting (3), and an extension element (4b), which are detachably connected to one another before connecting to the first connection region (2a) of the fitting (3).
11. Method according to Claim 10, characterized in that, after the concrete has cured, only the extension element (4b) is removed from the adapter (4a) and the adapter (4a) remains connected to the fitting (3).
12. Method according to Claim 11, characterized in that a sprinkler is then connected to the adapter (4a).
13. Method according to at least one of Claims 8, 9 and 12, characterized in that, prior to mounting the sprinkler, a cover which has an opening for the sprinkler is arranged on the box (5).

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