WO2024003342A1

WO2024003342A1 - Foldout pipeline assembly

Info

Publication number: WO2024003342A1
Application number: PCT/EP2023/067981
Authority: WO
Inventors: Matthias Braun
Original assignee: Putzmeister Engineering Gmbh
Priority date: 2022-06-30
Filing date: 2023-06-30
Publication date: 2024-01-04
Also published as: DE102022116381A1

Abstract

The foldout pipeline assembly (10), in particular for the application of concrete during the construction of tunnels, comprises: a plurality of pipeline segments (18) connected by pipe swivel joints (12), the pipeline segments forming a meandering pipeline in a longitudinal direction (L) when in the substantially extended state, and forming a compact helical arrangement when in a folded-in state; and a plurality of suspension elements (40) which support the pipeline and can be arranged so as to be movable along a guide element (30) in the longitudinal direction (L), wherein the suspension elements (40) are designed in such a way that they allow the pipeline segments (18) a degree of freedom of movement substantially transversely to the longitudinal direction (L).

Description

Foldable piping arrangement

Technical area

[0001] The present invention relates to a foldable pipeline arrangement, in particular for the application of thick matter such as. Concrete in tunnel construction.

Description of the prior art

[0002] When dispensing concrete in tunnel construction, the task is to supply pumped concrete to a concreting device that often moves back and forth in a predominantly linear manner in confined spaces, mainly in one direction. In prefabricated tunnel construction, for example. are there sections to be concreted that are spatially transverse to the main direction of movement or are strongly limited transversely to the longitudinal direction of the tunnel segments. This can be e.g. B. It is a supply tunnel, which is naturally narrow compared to the actual (main) tunnel tubes. Typical dimensions in this context are, for example: a length of over 20 m with a usable width of less than 1 m and a height of approx. 2m. In the example of prefabricated tunnel segments, (pump) concrete must be placed on the ground within the formwork of such a supply tunnel over the entire length of the segment.

[0003] Even when concreting in a prefabricated plant, concreting devices often have to be used, which are predominantly move linearly back and forth mainly in one direction, are supplied with concrete, whereby the available space is to be used as effectively as possible for transport routes, accesses or more area that can be filled with prefabricated parts.

[0004] There are solutions with which the concrete or Pumped concrete can be introduced into the narrow segment via pipes and/or hoses, with regard to the narrow, low and long concreting sections being an important aspect of how the guides for the corresponding delivery line parts are held and moved and what space these variants take up.

[0005] From DE 43 27 053 A1 a mobile concreting device with a telescopic mast boom is known. In a variant described, a hose drum arranged on a rotating column of the mast boom is provided, on which a delivery line designed as a flexible hose is wound, which can be unwound from the hose drum in accordance with the telescopic reach of the mast boom. For longer tunnel sections, this hose reel can become very voluminous. In a further described variant, instead of a hose drum with a wound conveyor hose, the delivery line has a so-called pipe cutter, which is arranged between the telescopic booms and can be folded apart when they are extended. The pipe cutter consists of a large number of pipe segments connected in a zigzag manner around the mast boom using pipe swivel joints. When the pipe cutters are unfolded, the pipe segments lying next to each other in the folded state are pulled apart, so that the angle between two pipe segments connected to one another increases increasingly, due to the Simultaneity of expansion is the same angle between all pipe segments. This is therefore a folding at the same angle (harmonica principle). In narrow or low tunnel sections, it is difficult to insert the pipe segments if there is only little space available in front of the tunnel entrance (portal).

Summary of the invention

[0006] Based on this, according to the invention a foldable pipeline arrangement with the features of claim 1 or proposed in claim 2.

[0007] The invention is based on the knowledge that a pipe arrangement folded in a space-saving manner according to the pipe shear principle can then be easily inserted into a narrow area such as a tunnel segment if the individual pipe segments can be unfolded at unequal angles. For this purpose, it is necessary that suspension elements are provided according to the invention, which grant the pipeline segments an additional degree of freedom of movement. This additional degree of freedom can in particular be a (translatory) degree of freedom of movement essentially transverse to a longitudinal direction of the unfolded pipeline arrangement.

[0008] Further advantages and refinements of the invention result from the subclaims, the description and the accompanying drawing.

[0009] It is understood that the features mentioned above and those to be explained below are not only in the combination specified in each case, but also in other combinations or can be used alone without departing from the scope of the present invention.

[0010] The invention is shown schematically in the drawing using an exemplary embodiment and is described in detail below with reference to the drawing.

Short description of the drawing

[0011] Figure 1 shows schematically a pipeline arrangement according to the invention in the folded state in a perspective view.

[0012] Figure 2 shows. The pipeline arrangement of Figure 1 from a different perspective in front of a tunnel segment.

[0013] Figures 3 to 7 illustrate the process of folding out the pipeline arrangement according to the invention and introducing it into the tunnel segment.

[0014] FIG. 8 shows the fully unfolded pipeline arrangement of FIG. 7 in a side view.

[0015] FIG. 9 shows a perspective schematic view in an enlarged detail view of an embodiment of the suspension element according to the invention.

[0016]FIG. 10 shows a situation similar to FIG. 6 in a top view from below to illustrate the transverse displaceability according to the invention.

Detailed description [0017] Identical and similar features shown in the individual figures are designated with the same reference numerals.

Figure 1 shows a pipeline arrangement 10 according to the invention in a perspective view, and Figure 2 shows the pipeline arrangement 10 from a different perspective and in front of a tunnel segment T into which the pipeline is to be inserted.

The pipe arrangement 10 comprises, in a manner known per se, a plurality of pipe segments 18, which are each connected to one another by means of pipe swivel joints 12 to form a so-called pipe shear. The pipe swivel joints 12 are each formed from two 90 ° pipe bends 14, which are rotatably connected to one another about an axis of rotation by means of a pipe bend clamp 16. The free end of each pipe bend 14 is connected to a pipe segment 18, and opposite ends of the two pipe segments 18 are each connected to a further pipe swivel joint 12. In this way, a large number of pipeline segments can be connected to one another, which form a compact helical arrangement in a folded state (see Figures 1 and 2) and a meandering pipeline when unfolded or stretched in a longitudinal direction (see Figure 8 ) form.

In the illustrated embodiment, the pipe arrangement 10 is designed such that the pipe segments 18 are aligned essentially horizontally and the axes of rotation of the pipe swivel joints 12 are aligned essentially vertically. However, there are Arrangements with essentially vertically aligned pipe segments and essentially horizontally extending axes of rotation of the pipe swivel joints are also possible.

[0021] In the embodiment shown with essentially horizontally aligned pipe segments 18, a number of pipe segments (every second one) are arranged at the top, while the corresponding other pipe segments are arranged at the bottom. A foremost, first pipeline segment 18. 1 of the pipeline arrangement 10 has a "half" pipe swivel joint at its open end, i.e. only a pipe bend with a connecting clamp, which is used to connect, for example, an end hose for dispensing concrete. The corresponding rearmost, last pipe segment 18. n of the chain of pipe segments 18 (assuming n pipe segments in the pipe arrangement; in the embodiment shown, n = 8) also has a “half” pipe swivel joint at its open end; Here you can either connect a connecting hose to the concrete pump, or if necessary, additional pipe segments can be flanged on to extend the pipe.

[0022] The overhead pipe segments 18 are at least partially arranged to be displaceable in a longitudinal direction on a guide element 30 by means of suspension elements 40. Preferably, each of the overhead pipe segments 18 is suspended from a suspension element, but this is not mandatory.

[0023] In the exemplary embodiment shown, the guide element 30 comprises two parallel elements in the longitudinal direction mutually aligned guide rails 32. The suspension elements 40 include in the guide element or Sliding elements arranged slidably on the guide rails, which in the exemplary embodiment shown are used as support rails 42, for example. with an I-profile, designed and with their ends each mounted along the guide rails 32 in the longitudinal direction. Of course, other design options are readily available to a person skilled in the art, for example. with just one guide rail or more than two guide rails (to increase stability) and appropriately adapted sliding elements.

[0024] For attaching the overhead pipe segments 18 to be connected to a suspension element 40, suspensions 44, not shown here and to be explained in more detail below, are provided. As shown, the suspensions 44 can be designed on the pipe side as pipe holders 22, which are attached in particular centrally to the respective pipe segments 18. The pipe holders 22 can, for example. As shown, there can be an annular holder that firmly encompasses the pipe cross-section and may be designed as a clamp. Alternatively, for example Welding to the respective pipe segment is also possible. At the other end, the suspensions 44 are arranged to be transversely displaceable on a respective associated suspension element 40 and rotatable about a substantially vertical axis of rotation.

[0025] In the case of an embodiment with essentially vertically aligned pipe segments, the suspension on the pipe side can be analogous, for example. as a pipe clamp or Pipe bend clamp 16 can be formed. [0026] According to the invention, the suspension elements 40 are thus designed in such a way that they enable or enable the pipe segments 18 to move transversely to the longitudinal direction (i.e. transversely to the extent of the guide element 30). that they allow the pipeline segments to be folded out at unequal angles, as will be explained in more detail below.

[0027] Unlike when folding out a conventional pipe cutter, in which the individual pipe segments are always pulled apart at the same angle, the solution according to the invention enables the pipe arrangement 10 according to the invention to be pulled apart asymmetrically, with the result that the pulling apart can take place in a small space and very quickly an obtuse angle between the first pipe segments 18. 1 and the second pipeline segments 18. 2 of the arrangement can be achieved, which in turn allows space-saving insertion into a shaft or a tunnel segment T is made possible, which or which is significantly narrower than a width of the pipeline arrangement in the folded state. The pipeline arrangement according to the invention therefore requires only comparatively little space in front of the tunnel entrance or Distance from the tunnel entrance.

[0028] The pipe arrangement 10 according to the invention thus has an additional degree of freedom of movement transversely to the longitudinal direction of the essentially stretched pipe for the movement of the pipe segments when unfolding (and correspondingly also when folding in) the arrangement. The additional degree of freedom of translation transverse to the longitudinal direction of the essentially stretched pipeline runs in particular in a plane parallel to the extent of the pipeline segments. The remaining Degrees of freedom are the same as with conventional pipe shears, in particular the degree of freedom of rotation of the suspension of the pipe segments about an essentially vertical axis of rotation.

[0029] This is illustrated in more detail with the sequence of FIGS. 3 to 8. In Figure 3 the beginning of an unfolding or Pulling apart the pipeline arrangement 10 is shown by the first pipeline segment 18. 1 is displaced with its associated suspension element 40 along the rails 32 in the direction of the tunnel segment T. As can be seen from the illustration in FIG. 3, the angle between the first pipe segment is 18. 1 and the following second pipeline segment 18. 2 greater than the angle between the second pipe segment 18. 2 and the subsequent third pipeline segment 18. 3. This can already be seen from the fact that the distance from the first pipe segment 18. 1 associated suspension element to the next suspension element is larger than between this and the next but one suspension element. In the case of a conventional known pipe cutter, the unfolding would take place with equidistant suspension elements.

[0030] Figure 4 shows the pipeline arrangement 10 in an even further extended state, with the first pipeline segment 18. 1 now stands so steeply with an obtuse angle compared to the subsequent pipeline segments that it comes to lie within a clear width of the tunnel segment T and is ready for insertion into the shaft, while most of the subsequent pipeline segments are still essentially in their folded starting position. This is illustrated in particular by the representation in FIG. 5, which essentially shows the situation in FIG. 4 in a top view. The decisive factor for this mode of operation is the fact that the pipeline segment can be moved relative to its associated suspension element in the sense of the double arrow D shown and transversely to the longitudinal direction L.

[0031] The further threading process of the pipeline into the tunnel T is shown in plan view in FIGS. 6 and 7. Particularly from the illustration in FIG. 6, the unequal-angle fold according to the invention can be clearly seen, with the angles a drawn between the second pipe segment 18. 2 and the third pipeline segment 18. 3, ß between the third pipeline segment 18. 3 and the fourth pipeline segment 18. 4, and y between the fourth pipe segment 18. 4 and the fifth pipeline segment 18. 5, for which the following applies: a > ß > y. Figure 7 shows the pipeline arrangement 10 in a substantially stretched, extended end position, and Figure 8 shows the situation of Figure 7 in a side view, from which the meandering course of the pipeline can be seen in particular.

[0032] A fold according to the invention with unequal angles is therefore characterized by a V ß V y or a > ß > y, while with conventional pipe cutters a = ß = y.

[0033] A constellation comparable to that in FIG. 6 is shown in a plan view from below in FIG. 10 in order to illustrate in particular the transverse displaceability of the pipe segments 18 relative to the suspension elements 40. The amount of the respective transverse displacement can be determined at the position of the pipe holder 22 of the respective pipeline segment in relation to the associated suspension element. While the pipe holder 22.1 of the first pipe segment 18.1 is located essentially centrally below the associated suspension element, the pipe holder 22.2 of the third pipe segment 18.3 is moved all the way to the edge of the suspension element (at the top in the figure). The two subsequent pipe holders 22.3 and 22.4 are shifted off-center to a decreasing extent on the respective suspension elements. This transverse displaceability (in the sense of the additional (translatory) degree of freedom according to the invention) in conjunction with the rotatability of the pipeline segments about a substantially vertical axis of rotation of their suspension enables the successive extension of the pipeline segments according to the invention.

For a specific design of the suspension element according to the invention, various options and variants will become apparent to those skilled in the art. A possible embodiment is described below with reference to FIG. 9.

9 shows, in a greatly enlarged detail, a part of the pipe arrangement 10 according to the invention and in particular a possible embodiment of the suspension element 40. In the exemplary embodiment shown, the (partially cut) suspension element 40 comprises a support rail 42, which has already been briefly described above, for example as shown I-profile can be designed. Other design options are readily apparent to those skilled in the art. The suspension element 40 is connected to the mounting rail 42 in the guide element 30 (which in the illustrated embodiment is two parallel to each other extending guide rails 32) are mounted so as to be slidably displaceable in the longitudinal direction L.

[0036] Furthermore, the suspension element 40 comprises a running rail 46, which is attached to the support rail 42 facing the pipeline in such a way that its running rail opening runs essentially transversely (90°) to the longitudinal direction L. The running rail 46 can, for example. be designed as a helmet profile rail as shown. Alternative rail designs are readily apparent to those skilled in the art.

[0037] The suspension 44 is designed at its end facing the suspension element 40 with a running element which engages in the rail and is, for example, as shown. can be a so-called trolley, which is a roller arrangement to be placed within the running rail. A design of the running element with one or more rollers 49 proves to be advantageous in that this ensures a particularly low-friction displaceability of the pipe segments transversely to the longitudinal direction.

Claims

Patent claims

1. Foldable pipeline arrangement (10), in particular for dispensing concrete in tunnel construction, with a large number of pipeline segments (18) connected by means of pipe swivel joints (12), which form a meandering pipeline in a substantially stretched state in a longitudinal direction (L) and in form a compact helical arrangement in a folded state, and a plurality of suspension elements (40) which carry the pipeline and can be displaceably arranged along a guide element (30) in the longitudinal direction (L), the suspension elements (40) being designed in such a way that they correspond to the pipeline segments ( 18) grant a degree of freedom of movement essentially transverse to the longitudinal direction (L).

2. Foldable pipeline arrangement (10), in particular for dispensing concrete in tunnel construction, with a large number of pipeline segments (18) connected by means of pipe swivel joints (12), which form a meandering pipeline when stretched in a longitudinal direction (L) and when folded State form a compact helical arrangement, and a plurality of suspension elements (40) which carry the pipeline and can be displaceably arranged along a guide element (30) in the longitudinal direction (L), the suspension elements (40) being designed in such a way that they allow the pipeline segments to unfold at unequal angles (18) allow.

3. Piping arrangement (10) according to claim 1 or 2, the suspension elements (40) of which comprise a running rail (46) arranged essentially transversely to the longitudinal direction (L).

4. Piping arrangement (10) according to one of claims 1 to 3, which comprises a plurality of suspensions (44) which are arranged at one end on the pipe and at the other end in a transversely displaceable manner on an associated suspension element (40).

5. Piping arrangement (10) according to claim 4, the suspensions (44) of which have a pipe holder (22) or a pipe clamp on the pipe side or are designed as pipe holders (22) or pipe clamps.

6. Piping arrangement (10) according to claim 4 or 5, the suspensions (44) of which are otherwise designed as a running element (48).

7. Piping arrangement (10) according to claim 6, in which the running element (48) is designed to be inserted into the running rail (46).

8. Piping arrangement (10) according to claim 6 or 7, the running element (48) has at least one roller (49).