DE1284743B - Device for fastening a plastic pipe on the apex of a concrete pipe laid in the ground - Google Patents

Description

The invention relates to a device for attaching a Kuststoffrohres, in particular a drainpipe, on the apex of an im Concrete pipe laid in the ground, in particular a drainage pipe.

Attempts have already been made to make plastic drainpipes using plastic glue to attach to the existing concrete drainage pipes, but without anyone Success.

It is known to attach a plastic drainpipe on a Concrete drainage pipe to use ordinary tie wire between feet and foundation of the concrete pipe pulled through on both sides of the concrete pipe is bent up and twisted after placing the drainage pipe. Because the drainpipe is only laid after the pipe trench has been backfilled, it often happens that the Binding wire ends are also tamped, so that the laying of the drainage pipe Tying wire ends have to be fetched again in a cumbersome manner. aside from that it is often the case that these binding wire ends corrode and therefore not more the required strength to attach and fix the drainage pipe have so that they can tear when the filter gravel is poured out. It there is therefore the risk that when the filter gravel is introduced or afterwards atmospheric influences the drainpipe opposite the axis of the drainage pipe is moved. However, this is the creation aimed at by the building authorities of a defined drainage space around the drainage pipes is called into question.

It is also known when laying multi-channel pipes made of concrete the individual pipe parts by form-fitting stacking against the side To secure relative displacements. The special design of the pipes for the purpose To lay them as a double pipe, however, is very technical in terms of production expensive and leads to difficulties in terms of laying the pipes because it is unwieldy and difficult to move components.

The invention is based on the object of a particularly simple one and to create secure fixing of the plastic pipes. This task is carried out with a Device of the type mentioned according to the invention solved in that as Position securing elements U-shaped concrete blocks are provided with their Legs enclose the plastic pipe with little play and with the insides their leg ends rest loosely on the upper part of the side walls of the concrete pipe.

The use of molded stone-like elements is known per se, however In the known cases, these elements serve as cover hoods for those laid in the ground electrical cables or as attachments anchored by concreting to hold a Pipeline on a pad. In contrast, the known elements do not have the Task of securing the position against lateral displacement of a plastic pipe a concrete pipe.

With the molded blocks according to the invention, the attachment of the The plastic pipe on the concrete pipe can be carried out extremely easily. A perfect alignment of the plastic pipe on the concrete pipe. A plastic drainpipe is in this position on a drainage pipe due to the weight of the concrete Filling up the gravel bed kept safe. The individual shaped stones can be arranged at relatively large intervals. A particular advantage of the Form stone consists in the fact that he is at the same time with the drainage pipe after backfilling and Compaction of the pipe trench can be mounted. This also makes the manufacture the drainage space around the drainage pipes is significantly simplified. moreover is through the outer profile of the shaped stones the shape of the gravel bed around the drainage pipes very simplified, thereby creating a defined drainage space around the drainage pipes and also a simplified acceptance by the building authorities is taken into account. Since an exact alignment of the plastic pipe to the concrete pipe is guaranteed, the plastic pipe can be cleaned properly with the appropriate sewer cleaning equipment will.

The shaped stone can consist of porous concrete. Porous concrete has that Advantage that seepage water through it and through the slots of the plastic drainage pipe can flow into this.

In order to ensure that the shaped stone rests properly on the concrete pipe enable, the insides of the leg ends of the shaped stone are at the points on which they are supported on the concrete pipe, the beveled shape of the surface adapted to the concrete pipe. The leg ends can each be angled for this purpose Have recess, one angular surface of which is on the apex of the concrete pipe and the other angular surface rests against the side wall of the concrete pipe. This is a perfect immovable mounting of the shaped stone and the plastic pipe reached on the concrete pipe.

Embodiments of the invention are shown in the figures. It shows F i g. 1 the attachment of a plastic drainage pipe by means of a shaped stone on a concrete drainage pipe, FIG. 2 a shaped block according to FIG. 1, F i g. 3 to 5 front views of arrangements according to FIG. 1 with other shaped stone and pipe cross-sections.

In Fig. 1 shows a drainage pipe 1 made of concrete, which is designed as a double leg pipe. A slotted drainpipe 3 made of plastic rests on the flat apex surface 2. A shaped block 4 made of concrete, which is U-shaped and is supported on the drainage pipe 1, is placed over the drainage pipe 3. It has a semicircular recess 5, adapted to the outer diameter of the drainage pipe 3, in which the plastic pipe 3 is located with little lateral play. Its legs 6 and 7 have inside angular recesses 8 with horizontal support surfaces 9 and inclined contact surfaces 10. With the horizontal support surfaces 8, the molded block 4 is supported on the apex 2 of the drainage pipe 1. The shaped block 4 lies with the contact surfaces 10 on the side walls 11 (FIG. 4) of the drainage pipe 1. The angular recesses 8 secure the shaped block 4 against displacement transversely to the pipes 1 and 3. Here, the plastic pipe 3 is held securely within the circular recess 5 and thus on the apex t of the drainage pipe 1. At the same time, during assembly, the symmetrical design of the shaped block 4 causes the plastic pipe 3 to be centered on the drainage pipe 1. While in FIG. 1, the plastic pipe 3 is circular, the plastic pipe 3 'according to FIG. 3 has a flat foot 12 which rests flat on the apex 2 of the drainage pipe 1.

The shaped block 4 according to FIGS. 1 and 2 has short above, about below 45 ° extending inclined surfaces 13, while the molded block 4 'according to FIG. 3 the Inclined surfaces 13 'run at a smaller angle to the vertical and longer are trained. The shaped block 16 according to FIG. 4 has a circular arc on the outside Boundary surface 17.

The shaped block 23 according to FIG. In addition to the inclined surfaces 15, 5 has one another adjoining flatter inclined surfaces 24 and at the lower end of the legs 25 inside inclined surfaces 19, with which he on the side wall of a drainage pipe 26 is applied, which is almost circular and a support saddle 21 for the plastic drainpipe 3 has.

During the assembly, the drainage pipes made of concrete are first installed laid, the pipe trench filled and the soil compacted; then the hang-up takes place the plastic drainpipes on the apex of the drainage pipes, after which on the Plastic pipes and the drainage pipes are placed on the molded blocks.

Although the fastening according to the invention by means of shaped stones in drainage pipes Plastic is particularly useful, it can also make laying down others easier Pipes on the suitable apex of a concrete pipe laid in the ground be used.

Claims (1)

Claims: 1. Device for fastening a plastic pipe, in particular a drainage pipe, on the apex of a concrete pipe laid in the ground, in particular a drainage pipe, characterized in that U-shaped concrete blocks (4) are provided as position securing elements, which with their legs ( 6, 7) encompass the plastic pipe (3) with little play and rest loosely with the insides (10) of their leg ends on the upper part of the side walls (11) of the concrete pipe (1). z. Fastening device according to claim 1, characterized in that the shaped stones (4) consist of porous concrete. 3. Fastening device according to claim 1 or 2, characterized in that the inner sides (19) of the leg ends of each shaped block (23) are adapted to the beveled shape of the surface of the concrete pipe (26). 4. Fastening device according to claim 2, characterized in that the inner sides of the leg ends of each shaped block (4, 4 ', 16) have an angular recess, one angular surface (9) of which is supported on the apex surface (2) of the concrete pipe (1) and the other angular surface (10) of which rests against the side wall of the concrete pipe. 5. Fastening device according to claim 1 to 4, characterized in that the top of the shaped bricks (23 or 16) is beveled like a roof or curved in the shape of a circular arc.