FI82134B - ROERSATS AV ETT FLERTAL PLASTROER. - Google Patents

Description

1 82134

Piping consisting of several plastic pipes

According to the type definition, the invention relates to a piping consisting of a plurality of plastic pipes, which pipes are connected by spacers formed for them, the spacers being made as membrane hinges and the piping can be placed with a flexible design of membrane hinges around the center of the bundle. Such pipelines are used in connection with the laying of modern cable systems, such as those customary for, for example, telephone and television purposes and for data transmission. The pipelines are made in one piece from thermoplastic plastic by extrusion, the plastic is arranged so that the described bundling is possible as well as the arcuate lowering of 15 pipe bundles. The commonly used plastic is polyethylene. The other may be polyvinyl chloride.

In a known embodiment according to the species definition (Vogelsang "Mehrzweckrohr-System Vogelsang M4", May 1985), the individual tubes are smooth on the center side of the bundle 20. They are placed in the pipe bundle together against the pipe pipe. The pipe bundle thus formed is obviously not stable in the combined form. The known measures have proved to be good when the pipe bundles are pulled into a cable duct, which in turn is made, for example, as a plastic-25 pipe and which, together with the fastening plates and sealing plates or also the shrinking end closures, provides stabilization. Although the known embodiment can also be lowered to the ground, then it is still necessary to improve the stabilization.

The object of the invention is to further develop the piping according to the type definition in such a way that the combined pipe bundle is sturdy in such a way that the pipe bundle retains its shape when lowered into the ground by so-called plowing with suitable machines.

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The invention solves this problem in that the individual tubes have core elements formed for them, which in the tube bundle complement as a stabilizing core. In order to reduce the bending resistance, the core elements can be provided with slots or notches transversely to the longitudinal direction. It is understood that in the bundle of tubes, the tubes are located immediately and via the core elements against each other, they can also be tightened together against each other and against the stabilizing core.

Within the scope of the invention, the details offer various possibilities for further development and design. The core elements can thus be made in the tubes as hollow profiles shaped on the center side of the bundle. But the core elements may also have a brush-like cross-section, with the oblique-15 surfaces located planarly against each other in the core of the bundle.

Within the scope of the invention, the pipelines may comprise a desired number of pipes. In practice, three to six tubes are usually sufficient for the purposes explained at the beginning. The tubes 20 may have the same or different diameters. The usual outer diameter of the individual tubes is in the range of 30-60 nm. The width of the spacers is determined by the geometry of the pipe bundle that must be achieved by putting the piping together. A preferred embodiment of the invention comprises four tubes of the same cross-section, the tube axes of which form a square in the cross-section of the tube bundle.

This embodiment, also comprising other and different pipe dimensions, is characterized in that the ridge angle of the core elements is 90 ° and that the oblique surfaces coincide tangentially with the corresponding pipe walls.

In the piping according to the invention, the pipes are located in the pipe bundle immediately and via the core elements against each other. They are usually tightened together.

It can take place in various ways, e.g. in places by wrapping or wrapping with plastic or metal strips. If 3 82134 local enclosures are performed / then the distances between the individual surrounding members may be a few meters. Within the scope of the invention, it is possible to connect the oblique surfaces in the pipe bundle to each other in an adhesive manner, i.e. with 5 glues. In this case, electro-welding machines or a compounding compound or ordinary adhesives are used. But the oblique surfaces may also have a self-adhesive support surface and may be connected in the pipe bundle by means of it. A preferred embodiment of the invention is characterized in that the stabilizing core has a channel-like cavity and the core elements are provided for this purpose with corresponding parts limited in the shape of a partial circle. Another cable can be routed into the channel-like cavity or placed in the ground in the plowing connection.

The achieved advantages can be seen in that in connection with the piping according to the invention 15, the pipes are in a bundle mutually stabilized in shape by means of core elements.

The shape of the bundle is automatically preserved even when lowered into the ground by plowing or similar measures.

In the form of a pipe bundle, the piping can also be routed into the cable duct as before. The manufacturing is simple and takes place by extrusion. But the bundle shape can also be attached. This can be done, as already mentioned, simply by encircling the circumferential tape, also by tightening. To this end, the invention proposes that the end pipes of the piping have shut-off strips which are located against each other in the pipe bundle and are connected, and that the shut-off strips are made as an extension of the outer oblique surface of the end pipes of the piping. The connection strips can be flexibly shaped, which facilitates closing. A preferred embodiment of the invention is characterized in that the closure strips have, on the one hand, slit-like notches and, on the other hand, insertable mushroom-shaped closures with a profile.

In the following, the described and other features of the invention will be described in more detail in connection with a drawing showing only one embodiment. In the schematic representation Fig. 4 82134 Fig. 1 is a cross-section of a pipeline according to the invention, Fig. 2 the object of Fig. 1 combined into a pipe bundle, Fig. 3 is a perspective sectional view of a pipeline according to the invention, Fig. 4 is a second embodiment of the object of Fig. 2, to keep the combined piping together, Fig. 6 shows the object of Fig. 5 in a perspective section corresponding to Fig. 3; Fig. 7 shows a further embodiment of the piping according to the invention in the connected state; Fig. 8 shows the piping according to Fig. 7 on a reduced scale compared to Fig. 7; another embodiment, Fig. 10 is a modification of the object of Fig. 4 and Fig. 11 is a modification of the object of Fig. 5.

The piping shown in the figures consists of several plastic pipes 1, which are connected by a spacer 2 formed for them. The spacers are made as membrane hinges 2.

The piping can therefore be assembled into a pipe bundle with a flexible design of the membrane hinges 2 around the center 3 of the bundle. This is apparent from a comparative examination of Figures 1 and 2.

The individual tubes 1 have core elements 4 shaped towards the center of the bundle according to Figures 1-6, which in the tube bundle complement the stabilization core 5. It can be seen from Figure 2 that in the tube bundle the tubes 1 and the core elements 4 are located against each other, the piping can be fastened together. against. In the exemplary embodiment and according to a preferred embodiment of the invention, the core elements 4 are made in the form of hollow profiles formed on the tubes 1 and have a bristle cross-section, the oblique surfaces 6 being located in the stabilizing core 5 of the tube bundle.

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An exemplary embodiment shows a piping comprising four pipes 1 of the same cross-section, the pipe axes of which form a square in the cross-section of the pipe bundle. The ridge angle α of the core elements 4 is 90 ° for this purpose. The fitting is further performed so that the oblique surfaces 6 coincide tangentially with the corresponding pipe walls 7.

Figure 2 shows a gap between the core elements 4 for the sake of clarity. It is to be understood that in practice the components mentioned are located against each other. It can be seen from Figure 2 that the oblique surfaces 6 can be adhered to each other in the pipe bundle. They may therefore have a self-adhesive support surface, not shown.

Figure 4 shows a modification of the object of Figure 2.

It is found that the stabilizing core 5 has a channel-like cavity 8 in the middle and the core elements 4 are provided for this purpose with corresponding sub-circularly limited parts 9. An additional cable can be placed in the cavity 8.

The device can also be adapted to keep the combined piping together. This is done, for example, as shown in Figures 5 and 6, as a latch device. It can be seen from Fig. 5 that a stabilizing core 5 is arranged in the center 3 of the bundle of pipes, which supports the pipes 1 of the pipe bundle. To this extent, the arrangement is consistent with the embodiment of Figures 1-4. It is further claimed that the end pipes 1 of the piping have shut-off strips 10, which are located in the pipe bundle against each other and are connected. In this embodiment, the stabilizing core 5 is constructed of core elements 4, which are components of the piping. But a special stabilizing core 30 could also be used. In the illustrated embodiment, where the core elements 4 form a ridge angle α 90 ° and the oblique surfaces 6 join tangentially to the respective pipe walls 7, the closing strips 10 are made in the piping as an extension of the outer oblique surfaces 6 of the end pipes 1. They are flexibly shaped. In particular, it can be seen from Figure 6 that the closure strips 10 have, on the one hand, slit-shaped notches 11 and, on the other hand, β 82134 inserts with a sponge-shaped profile closure 12. In order to transport the combined piping in an arc, the slotted notches 11 Within the scope of the invention, the core elements 4 are provided with slots or perforations transverse to the longitudinal axis for the same purpose. This is illustrated in Figure 6. These measures reduce the bending resistance. Besides, it is easier to rewind the piping to the drum. It will be appreciated that these 10 measures may also be implemented only on a regional basis, namely where calculation in an arc is desirable. Figure 5 shows the combined state of these blacklists 10. It is further seen from Figure 5 that the closure strips 10 can also be connected to each other in the pipe bundle by means of material and / or adhesion. Using material means welding to each other. But the opposite surfaces of the barrier strips 10 may also have a self-adhesive support surface. The surfaces of the closure strips 10 facing each other in the pipe bundle could also be provided with form locking means, 20 e.g. in the same way as so-called back closures. As shown in Figures 7, 8 and 9, the core elements 4 can also be connected to the membrane hinges 2. In this case, special core elements are arranged, which complement the stabilizing core 5 in the tube bundle, thus stabilizing the tube bundle, namely when compressed. . Tightening together can take place by means of the circumferential member 14 shown in Fig. 10 or also by means of closing strips 10, notches 11 and shaped closures 12, on which the outermost pipes 1 of the piping are formed.

The core elements consist in one piece of the connecting web 30 and the stabilizing shape part 4. The connecting seams 13 are connected to the intermediate heat 2. In the embodiment according to Figures 7 and 8, the stabilizing parts 4 are made as hollow profiles which rest against each other by their dividing surfaces 15. A 4 Kuta than -35 square cross-section of these stabilizing form parts is observed, although on the pipe side

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7 82134 are convexly curved. It is not shown in the drawing that the partition surfaces 15 in the pipe bundle can be glued together.

When the piping according to Fig. 9 is assembled into a put-5 bundle, a stabilizing core 5 is formed, which forms a channel-like cavity 8 in the center of the bundle 3. In fact, the stabilizing shape parts 4 are provided with a correspondingly circular cross-section.

The disclosed embodiments can be further stabilized.

10 This is illustrated in Fig. 10. It shows another lift of Fig. 4 and that additional stabilizing elements 16 are placed on the outside of the tubes 1. They are connected in a brush by means of membrane hinges 2.

In the embodiment according to Figure 11, the core elements 15 have interlocking shaped closures 17 which alternately protrude through the oblique surfaces 6.

Claims (15)

A piping consisting of a plurality of plastic pipes (1), which pipes are connected by spacers (2) formed for them, the spacers being made as membrane hinges (2) and the piping can be placed with a flexible design of membrane hinges around the center of the bundle as a pipe bundle. 1) there are core elements (4) shaped for them, which complement the stabilizing core (5) in the tube bundle. Piping according to Claim 1, characterized in that the core elements (4) are made in the tubes (1) as hollow profiles formed on the center side of the bundle. Piping according to Claim 1 or 2, characterized in that the core elements (4) have a brush-shaped cross-section and that the oblique surfaces (6) are located in the core of the pipe bundle against one another. Piping according to Claim 3, in the form of an embodiment comprising four pipes (1) with 20 similar cross-sections, the axes of which form a square in the cross-section of the pipe bundle, characterized in that the ridge angle (α) of the core elements (4) is 90 ° and the oblique surfaces (6) to the corresponding 25 pipe walls (7). Piping according to Claim 3 or 4, characterized in that the inclined surfaces (6) are gluedly connected to one another in a pipe bundle. Pipe fitting according to one of Claims 3 to 5, characterized in that the inclined surfaces (6) have a self-adhesive support surface and / or lockable form closures (17) and are thus connected in the pipe bundle. Piping according to one of Claims 1 to 5, characterized in that the stabilizing core (5) 35 has a channel-like cavity (8) in the middle and the core elements (4) II 9 82134 are provided for this purpose with corresponding sub-circularly delimited parts (9). Piping according to one of Claims 1 to 7, characterized in that the end pipes of the piping have shut-off strips (10) which are located against one another in the pipe bundle and are connected, and that the shut-off strips (10) are formed on the outer sloping surface (6) as an extension. 8 82134 Piping according to Claim 8, characterized in that the closing strips (10) are flexibly deformable. Piping according to Claim 8 or 9, characterized in that the closing strips (10) have, on the one hand, slit-shaped notches (11) and, on the other hand, shaped mushroom-shaped closures (12). Piping according to Claim 1, characterized in that the core elements are formed in one piece by a connecting seam (13) and a stabilizing mold part 20 (4) and in that the connecting seals (13) are formed for the intermediate joint (2). Piping according to Claim 11, characterized in that the stabilizing form parts (4) are made as hollow profiles which rest against one another via their partition surfaces (15). Piping according to Claim 12, characterized in that the stabilizing form parts (4) are convexly curved on the pipe side. Piping according to one of Claims 11 to 13, characterized in that the distribution surfaces (15) are connected to one another in the pipe bundle by adhesive adhesion. Piping according to one of Claims 11 to 14, characterized in that the stabilizing core (5) has a channel-like cavity (8) in the middle and the stabilizing mold parts (4) are provided with a partial circular cross-section. 10,821 34