AU2022422396A1

AU2022422396A1 - Transport system for a drain arrangement

Info

Publication number: AU2022422396A1
Application number: AU2022422396A
Authority: AU
Inventors: Fabian MERGNER
Original assignee: Rehau Industries SE and Co KG
Current assignee: Rehau Industries SE and Co KG
Priority date: 2021-12-21
Filing date: 2022-12-20
Publication date: 2024-05-16
Also published as: WO2023118221A1; DE202021106956U1

Abstract

The invention relates to a transport system consisting of at least two drain arrangements, comprising a base which has a number of openings, and a number of approximately vertically projecting pillars connected to the base, wherein the pillars have a wall, wherein the pillars are arranged in a grid with at least one row of pillars and at least one column of pillars, which system is characterized in that the pillars of a row and/or of a column of pillars are spaced apart from one another via at least one first opening in the base, in that at least one row and/or one column of pillars is arranged on at least one edge of the base, and in that at least one row and/or one column of pillars is spaced apart from at least one edge of the base via at least one row of openings and/or one column of openings.

Description

TRANSPORT SYSTEM FOR A DRAIN ARRANGEMENT

The invention relates to a transport system of at least two drain arrangements, comprising a base, which has a number of openings and a number of approximately vertically projecting pillars connected to the base, wherein the pillars have a wall, wherein the pillars are arranged in a grid with at least one row of pillars and at least one column of pillars.

Drains which are used for collecting, storage or the percolation of fluids, in particular rainwater, are assembled from individual elements. In particular, drain arrangements with a base grid are used for this purpose, with pillars rising approximately vertically from the base grid. Connecting devices are used to connect the drain arrangement at the tips of the pillars, i.e. at the ends of the pillars opposite the base grid. For this purpose, the pillars can either be placed loosely on top of each other or joined together by means of snap-in connections.

In order to arrange such drain arrangements in a space-saving manner during production, storage and transportation, the pillars are hollow, so that such drain arrangements can be stacked by inserting the pillars of an adjacent drain arrangement into the hollow space of the pillars of a drain arrangement.

As part of a collection, storage or drain arrangement, the drain arrangement must be able to withstand certain forces resulting from the underground installation of such a collection, storage or drain device. In this case, an earth pressure and eventually also the hydrostatic pressure of the rain water collected therein acts on said device, on the other hand, traffic loads from the traffic routes above must also be absorbed.

The pillars of the drain arrangement are used to transfer the forces in the vertical direction. These must be designed in compliance with the mechanical and static requirements.

There are always problems when designing the pillars for a drain system with regard to the requirement to transfer forces, especially if this type of pillar is also to be designed for the possibility of stacking the drain systems.

EP 0943737 discloses a drain arrangement, in particular an irrigation and/or drainage box, comprising a base provided with perforations and side walls provided with perforations and integrally connected to the base, the box being open on the side opposite the base, and the box is designed on the open side in such a way that two identical boxes with the open sides can be placed against each other and connected to each other without the need for further accessories, the side walls being substantially perpendicular to the base, that the box has pillars extending substantially perpendicularly from the base to the open side, and that at least some of the pillars on the open side of the box are provided with first connecting parts and other pillars on the open side of the box are provided with second connecting parts, such that when two identical boxes according to the invention are placed with the open sides against each other, the first connecting parts of one of the two identical boxes are able to cooperate with the second connecting parts of the other of the two identical boxes to form a connection between the two identical boxes.

A disadvantage of the prior art is that so-called side walls with perforations must always be provided for intended use, which on the one hand increase the costs of manufacturing such drain arrangements, which require more space due to their large-volume structure, especially during transport and storage, and thus also cause increased costs for transport and storage.

It is an object of the present invention to overcome the disadvantages of the prior art and to further develop a transport system which has drain arrangements of the type mentioned above in such a way that it can be produced economically and cost effectively, has a simple and stable structure, can be used without additional attachment parts and whose transport volume is considerably smaller/reduced compared to the storage volume.

The first object is achieved in accordance with claim 1. Further advantageous embodiments are disclosed in the subclaims referring back to it.

It has surprisingly been found that a transport system of at least two drain arrangements, comprising a base having a number of openings and a number of approximately vertically projecting pillars connected to the base, wherein the pillars have a wall, wherein the pillars are arranged in a grid with at least one row of pillars and at least one column of pillars, is characterized in that the pillars of a row of pillars and/or a column of pillars are arranged at a distance from one another via at least one first opening of the base, in that at least one row of pillars and/or one column of pillars is arranged on at least one edge of the base, that at least one row of pillars and/or one column of pillars are arranged at a distance from at least one edge of the base via at least one row of openings and/or one column of openings. With this transport system, it is thus possible for the first time to manufacture it economically and cost-effectively, wherein the drain arrangements to be transported have a simple and stable structure, can be used without additional attachments and their transport volume is considerably smaller/reduced compared to the functional volume/storage volume.

The transport system of at least two drain arrangements according to the above embodiments is characterized in that at least one first drain arrangement with its row of pillars and/or column of pillars arranged at a distance from the edge of the first base is arranged orthogonally offset to a second drain arrangement in such a way that at least one row of pillars and/or one column of pillars of the second drain arrangement can be introduced into the openings of the row of openings and/or the column of openings arranged at a distance from at least one edge of the first base of the first drain arrangement. Surprisingly, this makes it possible for the first time to provide a transport system which has the same overall height as a single drain arrangement, for example with four drain arrangements arranged one inside the other. Advantageously, here the transport and storage volume is significantly reduced, so that the costs for storage, transport and arrangement in particular are also reduced. A further advantage of the drain arrangement is that the opening of the base of the drain arrangement also has an approximately polygonal and/or a cylindrical and/or an oval, in particular a rectangular and/or a square cross-section. The geometric variants of the opening of the base of the drain arrangement are adapted to the geometry/cross-section/perimeter of the pillars, since this drain arrangement is designed in such a way that the respective pillars can always be inserted into the openings of the base of the drain arrangement, at least for transport or with the transport systems, so that these are approximately similar or identical in shape in a cross-section.

It also turned out to be advantageous that, in particular, the perimeter of the opening of the base of the drain arrangement is approximately the same as the perimeter of the cross-section of the pillar. This ensures that, despite the usual manufacturing tolerances, the respective pillars can always be inserted into the openings in the base of the drain arrangement without any problems.

In the current prior art, the drain arrangements are stacked inside each other in such a way that the pillars of one drain arrangement can be inserted into the cavity of the pillars of another drain arrangement.

The transport system is further characterized by the fact that at least one drain arrangement has a point-symmetrical geometry. Within the context of the invention, point symmetry of the invention means that the trench element can be mapped onto itself by reflection at a point of symmetry. The drain elements can be stacked by means of orthogonal rotation to a drain element below. When stacking, the pillars of the drain elements further down are pushed through the openings of the base located above them. This provides a transport system which is characterized by the fact that the height of four interlocking drain arrangements is approximately equal to the height of a single drain arrangement.

It could be found that the transport system comprising at least two drain arrangements achieves optimum statics, an index strength of at least 320 kN/m 2 ,

preferably at least 400 kN/m in the vertical direction and at least 80 kN/m 2 2 , preferably at least 100 kN/m2 in the horizontal direction according to index testing in accordance with RAL quality guideline RAL-GZ 994/11 with a load increase of 0.5 kN/m 2s.

The advantage of the transport system of at least two drain arrangements is that it can be used as intended without additional attachment parts or side grids, which once again significantly reduces production, storage and transport costs.

A further advantage of the transport system of at least two drain arrangements is that, with an optimum storage volume of at least 95 %, preferably around 96.5 %, particularly preferably around 97 %, it has a very minimal material consumption in production of around 8 dM 3 , preferably around 30 I/m3 storage volume.

The transport system of at least two drain arrangements advantageously has a weight of around 7 kg when using a material with a density of around 900 kg/m 3 complying with the DIN ISO 1183-1:2019-09 standard.

The transport system with at least two drain arrangements is also designed in such a way that it has a very small component volume of at least 0.15 M3 , preferably around 0.2 m 3 and a very minimal storage or transport volume. Due to the optimal design and geometry of the drain arrangement to be transported, it is extremely easy to assemble and can be quickly assembled to form drain systems as well as collection, storage or infiltration devices.

In particular, the optimum point-symmetrical geometry of the drain arrangement to be transported means that it can be quickly assembled into small-volume and space saving transport systems at any time.

The advantage of the transport system of at least two drain arrangements is that the height (HT) of four drain arrangements arranged one inside the other is approximately equal to the height (H) of a single drain arrangement.

However, it is also within the scope of the invention that the height (HT) of the transport system of at least two drain arrangements is slightly higher than the height (H) of a single drain arrangement.

It is also within the scope of the invention that the distance between two drain arrangements arranged one inside the other is approximately 14of the total height of a single drain arrangement.

Furthermore, it is within the scope of the invention that the total height of a transport system corresponds approximately to the total height of a single drain arrangement and a multiple of the distance between drain arrangements arranged one inside the other. This advantageously leads to an extremely small or reduced volume of the transport system.

It has also proved to be advantageous for the transport system of at least two drain arrangements that the perimeter of the opening of the base of the drain arrangement is larger than the perimeter of the cross-section of the pillar of the drain arrangement. This allows the individual drain arrangements to be arranged easily, quickly and without tools to form individual transport systems.

A further advantage of the transport system with at least two drain arrangements is that the wall of the pillars that faces towards at least one edge of the base of the drain arrangement has a surface area of approximately at least 1,200cm 2 , preferably at least 1,800 cm 2 . The transport system of at least two drain arrangements thus has an extremely small surface area and also a very small volume, so that more drain arrangements can be transported than previously known in the prior art.

Another advantage of the transport system of at least two drain arrangements is that the open areas between the pillars facing towards at least one edge of the base of the drain arrangement have a maximum area of approximately 600cm , preferably a2

maximum of 400 cm . The transport system composed of at least one drain 2

arrangement thus has an extremely compact design with a very small volume.

A further advantage of the transport system with at least two drain arrangements has been found to be that it consists of or contains a polymer material, wherein the polymer material preferably is a thermoplastic polymer material, in particular a polyolefin, for example polyethylene, polypropylene, polybutylene or a copolymer of the aforementioned or a mixed composition of the aforementioned, or a polyvinyl chloride or a polyester or a polycarbonate.

However, it is within the scope of the invention that the polymer component has at least fractions of recycled material. Here, quantities of about 50 to 100 wt.%, preferably even 70 to 100 wt.%, based on the total weight, have proven to be advantageous. As a result, the infiltration drain arrangement can be produced economically and cost-effectively, has a low weight in relation to the functional or storage volume and is corrosion-resistant in intended use. The polymer materials mentioned are easy to form, stable, durable, mechanically resilient and inexpensive to purchase. The drain arrangements can be manufactured from these polymer materials in a simple, cost-effective and economical manner. This can be achieved, for example, in an injection molding process or in another polymer processing method.

It has also been found to be advantageous in the transport system comprising at least two drain arrangements that, in particular, the perimeter of the opening of the base of the drain arrangement is larger than the perimeter of the cross-section of the pillar. The transport system of at least two drain arrangements is further characterized by the fact that, on the one hand, this ensures stability and strength, while, on the other hand, the individual drain arrangements can be joined together quickly and in a space-saving manner to form transport systems.

Another advantage of the transport system of at least two drain arrangements is that the walls of the pillars define a cavity. On the one hand, this leads to an optimum weight of the drain arrangement and, on the other hand, to a better interlocking of individual drain arrangements.

It is also advantageous in the transport system of at least two drain arrangements that at least one pillar and/or one base has at least one identification element. In the transport system of at least two drain arrangements, product or material or manufacturer labels can be advantageously attached, such as a corresponding barcode, a QR code or RFIDs.

Further important features and advantages of the invention result from the sub claims, from the Figures and from the following descriptions of the Figures.

The present invention will now be described in greater detail with reference to these non-limiting exemplary embodiments.

Shown are in: Figure 1: a schematic, perspective view of a transport system; Figure 2: a schematic, perspective view of four drain arrangements; Figure 3: a schematic, perspective view of a drain arrangement.

Figure 1 shows a schematic, perspective view of a transport system 300.

In this exemplary embodiment, the transport system 300 comprises four drain arrangements 10, 10', 10, 10'.

The transport system 300 is characterized in that at least one first drain arrangement is arranged with its row of pillars 6 and/or column of pillars 7 arranged at a distance from the edge 21 of the first base 20 and orthogonally offset to a second drain arrangement 10', that at least one row of pillars 6 and/or one column of pillars 7 of the second drain arrangement 10' can be introduced into the second openings 23 of the row of openings 80 or the column of openings 90, which are arranged at a distance from at least one edge 21 of the first base 20 of the first drain arrangement 10.

In this exemplary embodiment, the drain arrangements 10, 10' are arranged in such a way that they are shown spaced apart from each other via their base 20, 20' for a better overview or description of guiding/mounting them into one another.

In the final state, the transport system 300 is designed in such a way that the respective base 20, 20' of the drain arrangement 10, 10' is arranged resting against each other, spaced apart from each other, via at least one connecting element 4, 4'.

In the final state, the respective pillars 30, 30' of the drain arrangement 10, 10' are arranged next to each other at a distance (A) of approximately 30 to 150 mm, preferably 40 to 100 mm.

Furthermore, the distance (A) between two drain arrangements 10,10',10,10' arranged one inside the other is approximately 14of the total height (H) of a single drain arrangement 10,10'.

The total height (HT) of a transport system 300 corresponds approximately to the total height (H) of a single drain arrangement 10, 10' and a multiple of the distance (A) between two drain arrangements 10, 10', 10, 10' arranged one inside the other.

The transport system 300 is further designed, at least in the final state, so that the total height HT of four drain arrangements 10, 10', 10, 10' arranged one inside the other is approximately equal to the height H of a single drain arrangement 10, 10'.

Advantageously, this final state can be achieved by at least one drain arrangement , 10' has a point-symmetrical geometry. Point symmetry in the context of the invention means that the drain element 10, 10' can be mapped onto itself by the reflection at a point of symmetry.

The transport system 300 is characterized in that a first drain arrangement 10 is arranged such that a second drain arrangement 10' is positioned orthogonally offset above the first drain arrangement 10 such that the row of openings 80' is arranged above the column of openings 90 of the first drain arrangement 10.

The transport system 300 is further designed so that a third drain arrangement 10 is arranged above a second drain arrangement 10' in such a way that the row of openings 80 is arranged orthogonally offset to the column of openings 90' of the second drain arrangement 10'.

Furthermore, the transport system 300 is designed such that a fourth drain arrangement 10' is arranged such that its row of openings 80' is arranged orthogonally offset to the column of openings 90 of the third drain arrangement 10.

Due to this combination of the drain arrangements 10, 10', the transport system 300 is characterized by simple arrangement and handling and is characterized by a minimal storage and transport volume.

Figure 2 shows a schematic, perspective view of four drain arrangements 10, 10' arranged one behind the other.

The drain arrangements 10, 10' are shown spaced apart, one behind the other, in such a way that the row of openings 80' of the second drain arrangement 10' is arranged in each case parallel to the column of openings 90 of the first drain arrangement 10 (shown on the far right).

The third drain arrangement 10 is again arranged so that its row of openings 80 is in each case positioned parallel to the opposing column of openings 90' of the second drain arrangement 10'.

The fourth drain arrangement 10' is arranged in such a way that its row of openings ' is positioned parallel to the opposing column of openings 90 of the third drain arrangement 10.

By pushing the four drain arrangements 10, 10', 10, 10' together until the respective base 20, 20', 20, 20' of the drain arrangement 10, 10', 10, 10' are arranged directly adjacent to each other, a transport system 300 is created.

Fig. 3 shows a schematic, perspective view of a drain arrangement 10, 10'.

The drain arrangement 10, 10' comprising a base 20, 20', which has a number of openings 22, 23, 24, and a number of approximately vertically projecting pillars 30, 'connected to the base 20, 20', wherein the pillars 30, 30' have a wall 31, wherein the pillars 30, 30' are arranged in a grid with at least one row of pillars 6 and at least one column of pillars 7, is characterized in that the pillars 30, 30' of a row of pillars 6 and/or a column of pillars 7 are arranged at a distance from one another via at least one first opening 22 of the base 20, 20', in that at least one row of pillars 6 and/or one column of pillars 7 are arranged on at least one edge 21 of the base 20, 20', in that at least one row of pillars 6 and/or one column of pillars 7 are arranged at a distance to at least one edge 21 of the base 20, 20' via at least one row of openings and/or one column of openings 90.

The row of openings 80 is arranged approximately orthogonally to the column of openings 90 at the edge 21 of the base 20, 20' and has at least one second opening 23.

In this exemplary embodiment, the row of openings 80 has sixteen second openings 23, the column of openings 90 also has sixteen second openings 23.

In this exemplary embodiment the row of pillars 6, which is arranged adjacent to the opening areas 80, has eight pillars 30, 30'.

In this exemplary embodiment the column of pillars 7, which is arranged adjacent to the column of openings 90, has eight pillars 30, 30'.

The pillars 30, 30' of the row of pillars 6 and the column of pillars 7 are connected to each other in one piece at their first free end 2 via a connecting element 4, 4'.

In this exemplary embodiment, the first end 2 of the pillar 30, 30' is cohesively connected in one piece via two connecting elements 4, 4' arranged opposite each other.

The row of pillars 6, which is arranged directly at an edge 21 of the base 20, 20', opposite the row of openings 80, also has eight pillars 30, 30'.

The column of pillars 7, which is arranged directly at an edge 21 of the base 20, 20', opposite the column of openings 90, has eight pillars 30, 30'.

The drain arrangement 10, 10' is further designed in such a way that a column of pillars 6 with six pillars 30, 30'and a column of pillars 7 with six pillars 30, 30' each are arranged at a distance from the row of pillars 6 and column of pillars 7 arranged at the edge 21 of the base 20, 20'via three rows of openings 8.

The drain arrangement 10, 10' is designed in such a way that the pillar 30, 30' has a constant cross-section over its entire length (L).

Furthermore, the drain arrangement 10, 10' is designed such that the pillar 30, 30' has an approximately polygonal and/or a cylindrical and/or an oval, in particular a rectangular and/or a square cross-section. In this exemplary embodiment, the pillar ,30' has a square cross-section.

Also advantageous with regard to the drain arrangement 10,10' is that the opening 22,23 of the base 20 of the drain arrangement 10,10' also has an approximately polygonal and/or a cylindrical and/or an oval, in particular a rectangular and/or a square cross-section. The geometric variants of the opening 22, 23 of the base 20 of the drain arrangement 10, 10' are adapted to the geometry/cross-section/perimeter of the pillars 30, 30', since this drain arrangement 10, 10' is designed in such a way that the respective pillars 30, 30' can always be inserted into the openings 22, 23 of the base 20 of the drain arrangement 10, 10', at least for transportation or with the transportation systems, so that these are approximately analogous or of the same shape in cross-section.

In this exemplary embodiment, the opening 22, 23 of the base 20 of the drain arrangement 10, 10' has a square cross-section.

It also turned out to be advantageous in this case that, in particular, the perimeter of the opening 22, 23 of the base 20 of the drain arrangement 10, 10' is approximately the same as the perimeter of the cross-section of the pillar 30, 30'. This ensures that the respective pillars 30, 30' can always be inserted into the opening 22, 23 of the base 20 of the drain arrangement 10, 10'without any problems, despite, for example, the usual manufacturing tolerances.

Furthermore, the drain arrangement 10, 10' is designed in such a way that the pillar , 30' is formed over its length L as a cuboid, three-dimensional body.

The length L of the pillar 30, 30' is approximately 10 cm to 100 cm, preferably 20 cm to 80 cm, particularly preferably 30 cm to 60 cm. In this exemplary embodiment, the pillar 30, 30' has a length L of approximately 35 cm.

The wall 31 of the pillar 30, 30' encloses a cavity 34.

The perimeter of the opening 22, 23 of the base 20, 20' is advantageously larger than the perimeter of the cross-section of the pillar 30, 30'. The first opening 22 and the second opening 23 of the base 20, 20' have the same perimeter. In this exemplary embodiment, the first opening 22 and the second opening 23 are square in cross-section.

The pillar 30, 30' has a square cross-section with a perimeter of approximately 60 mm.

It has been found to be advantageous if the perimeter of the first opening 22 and the second opening 23 of the base 20, 20' is approximately 6 to 50 mm, preferably 8 to mm, larger than the perimeter of the cross-section of the pillar 30, 30'. In this exemplary embodiment about 16 mm.

The wall 31 of the pillars 30, 30' that faces towards at least one edge 21 of the base , 20' has a surface area of at least 50cm 2 , preferably 100cm 2

. In this exemplary embodiment, approximately 120 cm 2

. The open surface 33 between two pillars 30, 30' arranged at a distance above a first opening 22 of the base 20, 20' has at least 70 cm 2 , preferably 100 cm2 , particularly preferably 150 cm 2 . In this exemplary embodiment, approximately 160 cm 2

. The total area of the row of pillars 6 and/or column of pillars 7 facing towards at least one edge 21 of the base 20, 20' is at least 15 dm 2 , preferably 20 dm 2 , particularly preferably 25 dM 2 . In this exemplary embodiment, approximately 25 dM 2 .

The open surfaces 33 of the row of pillars 6 and/or column of pillars 7 facing towards at least one edge 21 of the base 20, 20' have at least 5 dm ,2 preferably 10 M 2 ,

particularly preferably 12 dM 2 . In this exemplary embodiment, approximately 11 dM 2 .

The pillars 30, 30' enclose at least partially at their first end 2, which is connected to the base 20, 20', at least a second opening 23 of the base 20, 20' via at least two connecting elements 4 arranged opposite one another. The connecting element 4, 4' cohesively connects the first free end 2 of the pillar 30, 30'.

Furthermore, the connecting element 4, 4' has a height of approximately 20 to 200 mm, preferably about 25 to 150 mm, particularly preferably 30 to 100 mm. In this exemplary embodiment, the connecting element 4, 4' has a height of approximately 60 mm.

The drain arrangement 10, 10' is further designed such that at least one opening 23,

24, 23', 24' of the base 20, 20' has at least one stiffening element 40, 40' on the edge side.

In this case, the stiffening element 40, 40' cohesively connect the first free end 2 of the pillar 30, 30'to the edge 21 of the base 20, 20'.

Furthermore, the stiffening element 40, 40', which are arranged opposite one another, each surround the second opening 23 of the base 20, 20'.

The connecting element 4, 4' and the reinforcing element 25, 25' arranged opposite thereto also enclose the second opening 23 of the base 20, 20'.

The base 20, 20' has at least one reinforcing element 25, 25' on at least one edge 21, 21'.

The reinforcing element 25, 25' and/or the stiffening element 40, 40' has a height of approximately 10 to 100 mm, preferably approximately 15 to 80 mm, particularly preferably 20 to 60 mm.

In this exemplary embodiment, the reinforcing element 25, 25' and the stiffening element 40, 40'each have a height of approximately 30 mm.

The infiltration drain element 10, 10' has a height H of approximately 10 cm to 100 cm, preferably 20 cm to 80 cm, particularly preferably 30 cm to 60 cm. In this exemplary embodiment, the drain arrangement 10, 10' has a height H of approximately 33 cm.

The drain arrangement 10, 10' consists of or contains a polymer material, wherein the polymer material preferably is a thermoplastic polymer material, in particular a polyolefin, such as polyethylene, polypropylene, polybutylene or a copolymer of the aforementioned or a mixed composition of the aforementioned, or a polyvinyl chloride or a polyester or a polycarbonate.

In this exemplary embodiment, the drain arrangement 10, 10' consists of a polypropylene (PP) which has a fraction of approximately 30 to 100 % by weight, preferably 70 to 100 % by weight, of recycled material.

Claims

Claims

Transport system (300) composed of at least two drain arrangements (10, 10'), comprising a base (20, 20') which comprises a number of openings (22, 23, 24) and a number of approximately vertically projecting pillars (30, 30') connected to the base (20, 20'), wherein the pillars (30, 30') comprise a wall (31), wherein the pillars (30, 30') are arranged in a grid with at least one row of pillars (6) and at least one column of pillars (7), characterized in that the pillars (30, 30') of a row of pillars (6) and/or a column of pillars (7) are arranged at a distance from one another via at least one first opening (22) of the base (20, 20'), in that at least one row of pillars (6) and/or one column of pillars (7) is arranged on at least one edge (21) of the base (20, 20'), in that at least one row of pillars (6) and/or one column of pillars (7) is arranged at a distance from at least one edge (21) of the base (20, 20') via at least one row of openings (80) and/or one column of openings (90).
2. Transport system (300) according to claim 1, characterized in that at least one first drain arrangement (10) with its row of pillars (6) and/or column of pillars (7) arranged at a distance from the edge (21) of the first base (20) is arranged orthogonally offset to a second drain arrangement (10') in such a way that at least one row of pillars (6') and/or one column of pillars (7') of the second drain arrangement (10') can be introduced into the openings (23) of the row of openings (80) and/or column of openings (90) arranged at a distance from at least one edge (21) of the first base (20) of the first drain arrangement (10).
3. Transport system (300) according to one of the preceding claims, characterized in that at least one drain arrangement (10, 10') has a point-symmetrical geometry.
4. Transport system (300) according to one of the preceding claims, characterized in that the height (HT) of four drain assemblies (10, 10', 10, 10') arranged one inside the other is approximately equal to the height (H) of a single drain arrangement (10, 10').
5. Transport system (300) according to one of the preceding claims, characterized in that the distance (A) between two drain assemblies (10, 10', 10, 10') arranged one inside the other is approximately 1% of the total height (H) of a single drain arrangement (10, 10').
6. Transport system (300) according to one of the preceding claims, characterized in that the total height (HT) of a transport system (300) corresponds approximately to the total height (H) of a single drain arrangement (10, 10') and a multiple of the distance (A) between two drain assemblies (10, 10', 10, 10') arranged one inside the other.
7. Transport system (300) according to one of the preceding claims, characterized in that the perimeter of the opening (22, 23) of the base (20, 20') of the drain arrangement (10, 10') is larger than the perimeter of the cross-section of the pillar (30, 30') of the drain arrangement (10, 10').
8. Transport system (300) according to one of the preceding claims, characterized in that the wall (31) of the pillars (30, 30') that faces towards at least one edge (21) of the base (20, 20') of the drain arrangement (10, 10') has a surface area of approximately at least 1,200 cm 2 , preferably at least 1,800cm 2 .
9. Transport system (300) according to one of the preceding claims, characterized in that the open surfaces (33) between the pillars (30, 30'), facing towards at least one edge (21) of the base (20, 20') of the drain arrangement (10, 10'), have a maximum surface area of approximately 600 cm 2 , preferably at most approximately 400 cm 2 .
10. Transport system (300) according to one of the preceding claims, characterized in that at least one drain arrangement (10, 10') consists of or contains a polymer material, wherein the polymer material preferably is a thermoplastic polymer material, in particular a polyolefin, for example polyethylene, polypropylene, polybutylene or a copolymer of the aforementioned or a mixed composition of the aforementioned, or a polyvinyl chloride or a polyester or a polycarbonate.