EP4194629A1 - Drainage channel with a plastic channel body - Google Patents

Abstract

The present invention relates to a plastic drainage channel. Such channels are known and represent a sensible alternative to concrete and steel channels. In order to obtain sufficient compressive strength during installation, there has long been external ribbing, which also creates an intimate connection with the laying base. In terms of manufacturing technology, however, it makes sense if the ribs and the channel wall are produced with the same thickness, which means that in the prior art the channels are manufactured with comparatively thick walls. The invention provides additional reinforcement by the ribs at a branching point be branched into several rib strands. As a result, reinforcement can take place at the critical points, while the overall wall thickness can be chosen to be smaller as a result.

Description

The present invention relates to a drainage channel with a channel body made of plastic, which has two channel walls that flank a channel bottom on both sides and each form a support for a cover, the channel body having ribs that are continuous on the outside of a first support along a first channel wall , run over the bottom of the channel and a second channel wall to a second support.

Such drainage channels are already widely known from the prior art. So is already out of JPH 1088650A a drainage channel with a channel body is known, which has continuous external ribs, starting with an approximately central, horizontal side strut, additional bottom ribs are provided. However, these floor ribs starting in the middle cannot derive any loads acting on the supports and thus the cover, since they are only connected to the supports via the continuous ribs via the side brace. However, there is practically no load transfer from top to bottom via horizontal side braces.

In general, channels have the task of collecting surface water and discharging it into the sewage system. The requirements for these products are specified in regulated by EN 1433. In particular, specifications are made here for load capacity and tightness.

In the case of channel bodies made of concrete or polymer concrete, there is generally a high load-bearing capacity, since both concrete and polymer concrete can absorb high compressive forces. The wall thickness of these channels is usually determined by the manufacturing process.

However, the situation is different with channel bodies made of plastic. These can be made very thin-walled in terms of production technology and at the same time offer complete tightness. However, such thin-walled components can absorb neither high compressive forces nor high lateral compressive forces. Although these channels are given a back support made of concrete during installation and are subsequently supported by their bedding material during later operation, these parts can quickly deform during installation, especially when vibrating or tamping the foundation concrete, so that it is impossible to insert the covers in such a case becomes. Proper load transfer from top to bottom, i.e. essentially orthogonal to the longitudinal axis of the channel, is also no longer possible with a deformed channel body.

For this reason, channel bodies made of plastic are often designed with thicker walls than would be necessary for the subsequent function. In terms of production technology, the aim is for such a plastic channel body to have almost the same wall thickness ratios everywhere in order to achieve uniform filling of the mold and avoid defects in the end product. In order to achieve sufficient stability of the channel bodies, the channel walls are primarily additionally reinforced with stable ribbing so that they cannot be bent inwards. The ribbing also diverts part of the compressive forces acting from above, i.e. essentially orthogonally to the longitudinal axis of the channel, downwards into the foundation.

In the prior art, these ribs are usually running continuously vertically and orthogonally to the longitudinal axis of the channel, such as in EP 0 542 701 A1 and in the same way in the DE 10 2006 026 243 A1 and the DE 298 08 197 U1 shown. The ribs described in the prior art run on the outside from support to support and in this respect cannot solve the problem described. So that the ribs cannot buckle to the side under load, these structural elements are also designed with comparatively thick walls.

The thick walls of the channel body, including the ribbing, required for reasons of stability, lead to a disproportionately high use of resources, which entails both economic and ecological disadvantages.

As an alternative to the rib reinforcement described, the prior art also has hollow chamber structures that ensure adequate reinforcement of the channel walls and the required load transfer. These are about from the scriptures EP 1 528 154 A1 , FR 2 791 715 A1 , WO 2009/024255 A1 or WO 2014/037555 A1 known.

Here, too, however, the required gutter stability is bought at the cost of an increased use of material in the form of the additional hollow chamber structures. Depending on the design of the hollow body geometry, further problems can arise during installation, since the surrounding concrete cannot sufficiently backfill these hollow chambers, which can result in undefined load transfer areas. Air pockets can also form in which water can collect and lead to frost damage.

Against this background, the present invention is based on the object of creating a drainage channel with a channel body made of plastic, which at the same time requires a reduced use of material, but is consistently resilient.

This is achieved by a drainage channel according to the features of independent claim 1. Further useful configurations of such a drainage channel can be found in the subsequent dependent claims.

According to the invention, a drainage channel is provided with a channel body made of plastic, which has two channel walls which flank a channel bottom on both sides and each form a support for a cover, the channel body having ribs which are each continuous on the outside of a first support along a first channel wall, run over the bottom of the channel and a second channel wall to a second support, with the ribs each forming a first side rib, starting from the first support and running at least in sections perpendicularly to a first branching point, which branches there into first rib legs that run diverging downwards, each transition into initially vertical bottom ribs which then run around the bottom of the channel and are brought together again via second rib legs at a second branching point, from which a second side rib runs perpendicularly to the second support.

This initially results in continuous ribbing from one support to the other, as is known from the prior art, so that loads acting on a cover are dissipated into the foundation via the ribs. In contrast to the prior art, however, the branching at the branching points ensures that the force is distributed from originally one to several ribs, whereby, in contrast to the prior art, the loads due to the sloping rib legs ultimately act on all bottom ribs, not just on individual ones . In addition, the stability is significantly increased in the branching points, while also due to the sloping course of the rib legs from the branching point a constant transmission of the force takes place and backfilling of the inclined edges up to the branching point itself is facilitated.

This branching structure also serves as a buoyancy safeguard when installing the channel body. There is no need for constructive pockets, which would necessitate the cost-intensive use of side shifters in tool construction.

However, the invention also provides that the side limbs, in pairs or in groups, proceed downwards from the supports towards the branching point. A plurality of side struts preferably run perpendicularly along a first portion and then converge obliquely towards the branch point from which they then diverge in turn as described above. In addition to a Y-shape with a side rib that diverges into two rib legs, an X-shape, a star or the like can also be provided. An additional shape in the center of the branching point is also conceivable here and is also included in the term branching point, ie the branching point is designed as a ring of material, a triangle or the like, for example.

Such a drainage channel can specifically provide that the side ribs enclose an angle of at least 120° with the associated rib legs. This results in at least the same force dissipation downwards as to the side, whereas the angle can preferably be 150° and a branching into exactly two rib legs is preferably provided in the branching points. From this it follows that each rib leg encloses an angle of 60° in both directions with the neighboring rib leg. A structure in the form of an inverted Y is created.

As an alternative to the pure Y-structure, the drainage channel can have the side ribs in the branching points branch into more than two rib legs. These do not necessarily have to run in a straight line between the branching points either, but can also have other, such as wavy, courses.

The wall thickness of the channel walls and the channel bottom can preferably be at least approximately the same as the wall thickness of the ribs. When manufacturing the channel body, it is of great advantage if the same wall thickness is used throughout the workpiece. Since the injection mold is set up for a certain wall thickness in terms of pressure and temperature, it is helpful if different wall thicknesses are avoided in the same workpiece. However, in crossing and branching points as well as in angles, a slight increase in wall thickness is often unavoidable.

It can further be provided that the branching points are at least approximately halfway up the channel walls. This means that the branch is provided in an area where the trough has to withstand the greatest side load. The branching structure and its surroundings have a particularly stabilizing effect, similar to what is known in the case of a honeycomb structure, even if a comparatively thin wall thickness is selected. Below the junction, in the area where the lateral ribs merge into the bottom ribs, begins the area in which the loads are to be transferred to the foundation and thus allow a strong load transfer.

With some advantage, the adjacent ribs are spaced from each other, preferably with the side ribs of adjacent ribs being spaced at most twice as far as the bottom ribs of a rib or adjacent ribs. In this case, the ribs are discrete and not connected to one another. A lateral dissipation of the force from one rib to the next is not provided, since the preferred direction of force dissipation is downwards, i.e. in the direction of the bottom of the channel.

Nevertheless, with some advantage at least one, preferably two, side struts, in particular above the branching point, can run transversely to the ribs, these side struts preferably being less raised above the channel walls than the side ribs. These horizontal side braces are intended to help prevent buckling, even with thinner-walled designs.

In a preferred embodiment, the support of the channel body can be detachably assigned a cover, preferably with a frame interposed, and fixed with a toggle connected to the channel walls. Such covers form both the privacy screen and protection against objects falling into the channel. If heavy loads are driven on, the covers can also be moved or lifted out in borderline cases, so that attachment seems sensible. The loads acting on the covers are introduced into the side walls of the drainage channel due to their bearing on the lateral supports and are dissipated into the foundation via the ribbed structure. The toggle is attached to the side walls. When installed, it runs across the drainage channel and ensures that the cover can be screwed on at one point.

With particular advantage, the toggle can be held with two ends in both side walls in a receiving trough, which on the one hand is limited by a flat stop and on the other hand can be accessible via a feed arch, the feed arches of opposite receiving troughs being arranged in opposite directions and their arched walls together a circle around a vertical axis of rotation of the toggle. This allows the toggle to be easily inserted, which simply has to be held between the side walls at the level of the receiving recesses and is introduced by rotating the ends into the receiving recesses. Since the receiving troughs are deep in the side walls, a feed arc is required, the toggle when screwing runs through with its ends and which opens on the one hand into the drainage channel and on the other hand into the receiving trough.

In a useful development, the toggle can also be held in the receiving recesses with a releasable blocking element in each case, which prevents the ends of the toggle from twisting into the feed bend. Since the toggle can turn out again over time when driving over the cover over the feed bend, such a blocking element makes sense in order to prevent this turning from the outset.

In concrete terms, the blocking element can be a clamp, preferably held in a press fit, which runs transversely across the feed arc. This can, like its clamping seat itself, be manufactured inexpensively with simple means and is nevertheless effective.

Finally, provision can be made for the channel bottom to be assigned connection means for connection to a connection adapter, which delimit a preferably optionally openable floor drain and preferably include an undercut annular groove in which peripheral latching means of the connection adapter can be accommodated in a non-positive and positive manner. Such a connection adapter enables the connection to different pipelines running specifically below the channel body; lateral connections can also be present, which allow a pipe or a channel to cross the channel body.

The invention described above is explained in more detail below using an exemplary embodiment.

Figur 1

eine erfindungsgemäße Entwässerungsrinne mit einem aus Kunststoff gefertigten Rinnenkörper mit sich verzweigenden Rippen in perspektivischer Darstellung,

Figur 2

die Entwässerungsrinne gemäß Figur 1 in seitlicher Draufsicht,

Figur 3

die Entwässerungsrinne gemäß Figur 1 in dem in Figur 2 vermerkten Querschnitt,

Figur 4

die Entwässerungsrinne gemäß Figur 1 in einem Längsschnitt,

Figur 5

die Entwässerungsrinne gemäß Figur 1 mit zusätzlichen Zubehörteilen in perspektivischer Explosionsdarstellung, sowie

Figur 6

die Entwässerungsrinne gemäß Figur 5 in einer seitlichen Querschnittsdarstellung durch einen mit der Entwässerungsrinne verbundenen Anschlussadapter.

Show it

figure 1

a drainage channel according to the invention with a channel body made of plastic with it branching ribs in a perspective view,

figure 2

the drainage channel according to figure 1 in side view,

figure 3

the drainage channel according to figure 1 in the cross-section noted in Figure 2,

figure 4

the drainage channel according to figure 1 in a longitudinal section,

figure 5

the drainage channel according to figure 1 with additional accessories in a perspective exploded view, as well as

figure 6

the drainage channel according to figure 5 in a lateral cross-sectional view through a connection adapter connected to the drainage channel.

figure 1 shows a drainage channel 1 with a channel body 2 made of plastic, which encloses a channel bottom 5 between a first channel wall 3 and a second channel wall 4 and thereby forms a trough-shaped channel. This channel body 2 is reinforced and stiffened with a large number of ribs 8 on its outside. The individual ribs 8 run without touching each other from a first support 6 on the outside around the channel body 2 to a second support 7, so that a force is applied to the supports 6 and 7, for example due to a load on the supports 6 and 7 mounted cover 18 as in figure 5 shown, can be done on the ribs 8 in a below the channel body 2 to be formed foundation.

Compared to known rib arrangements from the prior art, the ribs 8 as shown in FIG figure 2 is explained in more detail, starting from the first support 6 there is a first side rib 9 which runs straight down the first channel wall 3 to the area of the middle of the wall and meets the first branching point 11 there. In the first branching point 11, in addition to the first side rib 9 coming from above, two first rib legs 13 coming from obliquely below meet, so that the shape of a three-pointed star is formed. Here, the two first rib legs 13 enclose an angle of 60°, while the first rib limbs 13 and the first side rib 9 each enclose an angle of 150°. The two first rib legs 13 diverge further from the first branching point 13 in a straight line and finally, mirror-symmetrical to one another at the level of the first side rib 9, again form an angle 16 with a width of 150° with the ultimately adjoining bottom ribs 15 .

The channel body 2 has a vertical line 25 on the first channel wall 3 for the installation of a back support. It supports the user when installing the channel body 2 and also ensures that no more foundation concrete is used than is necessary for a secure hold.

Based on the cross section in figure 3 the entire course of a rib 8 around the outside of the drainage channel 1 can be traced. The first side rib 9 attaches below the first support 6 of the first channel wall 3 and merges via the first branching point 11 into the first rib leg 13 . This forms an angle 16 with the bottom rib 15. As a result, the bottom rib 15 is again parallel to the first side rib 9 and runs under the channel bottom 5 to the second channel wall 4. There, the course is essentially a mirror image of the first channel wall 3, coming from below Consequently, the rib 8 runs further from the bottom rib 15 over an angle 16 in the second rib leg 14, which obliquely upwards to second branching point 12, where it meets another second rib leg 14 and these merge together into a second side rib 10, which finally contacts the second support 7 from the underside and supports it. Furthermore, the two channel walls 3 and 4 have receiving depressions 21, of which only a section with the feed bend 23 is visible in the first channel wall 3 due to the position of the cross section.

figure 4 shows the second channel wall 4 viewed from the inside of the drainage channel 1 so that the view of the receiving trough 21 is clear. When the channel body 2 is in use, it is provided with covers 18 in the upper part, mostly made of cast iron, occasionally also made of plastic. In order to prevent the covers 18 from being unintentionally taken out and removed, they are secured via a toggle 19, which is figure 5 shown, screwed. In contrast to a four-point screw connection directly on the frame, when using a toggle 19 to secure the cover 18 with a one-point screw connection, there is a risk that the toggle 19 can independently unscrew laterally due to vibrations and dynamic loads. To prevent this, the toggle can be secured by a simple clip 24, as again in figure 5 is shown. In order to use the toggle 19, it is held between the first channel wall 3 and the second channel wall 4 at the level of the receiving trough 21 and rotated towards it. Here, the ends of the toggle 19 are introduced into feed bends 23, which form the opposite receiving troughs 21 in opposite directions. The opposite feed curves 23 lie on a common circle, so that turning the toggle 19 causes the toggles 19 to rotate over the feed curves 23 into the receiving troughs 21 . In order to prevent it from turning out in this position, a clamp 24 is positioned with a force fit next to the toggle 19 so that it can no longer escape into the feed bend 23 . The side of the receiving troughs 21 opposite the feed sheet each form a straight stop 22, so that the toggle 19 is then fixed.

As in figure 5 As shown, covers 18 can then be fixed with a screw 20 which is rotated through toggle 19. The brackets 24 hold the toggles 19 in position, so that the covers 18 can only be detached by loosening the screws 20 . In addition, the channel body is designed in such a way that various connection options can be provided without any problems. This relates in particular to the 90-degree connection of a channel run laterally to a side connection 28 of the first channel wall 3, the option of connecting a connection adapter 27 to the channel bottom 5, which is held in position positively and non-positively via locking elements. A further connection to a tubing can take place via further side connections 28 .

Several channel bodies 2 are connected to one another via a known tongue and groove connection, which offers the optional possibility of being able to seal the channel joint using additional sealants if required. In addition, injection-molded end walls 26 can also be adapted in these areas. With all accessories, apart from the covers that are accessible later, it is important that they are made of one type of recycled plastic, which has a positive effect on the ecological balance, in addition to some other aspects such as weight, tightness, corrosion resistance and others.

figure 6 shows a cross-sectional representation of the connection of the channel body 2 of the drainage channel 1 with the connection adapter 27. This has an edge which has a wedge-shaped edge contour in cross section, which in turn can easily be inserted into an annular groove of the channel body 2. In the area of the channel bottom 5, a floor drain is provided for this purpose, which interrupts the floor ribs 15 and is encompassed by the mentioned groove, preferably in the form of a circular or oval annular groove. This is a double edge that is formed around the floor drain, with one of the double edges in cross-section having a locking means, for example in the form of a step, forms, in which engage a latching means of the connection adapter 27 and the connection adapter can thereby connect non-positively and positively to the channel body 2.

A drainage channel is thus described above with a channel body made of plastic, which requires a reduced use of material, but is nevertheless consistently resilient.

REFERENCE LIST

1

drainage channel

2

channel body

3

first channel wall

4

second channel wall

5

channel bottom

6

first bearing

7

second support

8th

rib

9

first lateral rib

10

second lateral rib

11

first branch point

12

second branch point

13

first rib leg

14

second leg of the rib

15

bottom rib

16

angle

17

side brace

18

cover

19

gag

20

screw

21

receiving recess

22

attack

23

feed sheet

24

bracket

25

elevation line

26

bulkhead

27

connection adapter

28

side port

29

ring groove

30

locking element

Claims (15)

Drainage channel with a channel body (2) made of plastic, which has two channel walls (3, 4) flanking a channel bottom (5) on both sides and each forming a support (6, 7) for a cover (18), the channel body ( 2) has ribs (8), which each run continuously on the outside from a first support (6) along a first channel wall (3), over the channel bottom (5) and a second channel wall (4) to a second support (7),
characterized in that the ribs (8) each form at least one first side rib (9) running at least in sections perpendicularly from the first support (6) to a first branching point (11), which ribs there diverge into first rib legs (13 ) branched, each of which merges into bottom ribs (15) that are initially vertical and then run around the channel bottom (5) and are brought together again via second rib legs (14) in a second branching point (12), from which a second side rib ( 10) runs vertically up to the second support (7). Drainage channel according to Claim 1, characterized in that the side ribs (9, 10) enclose an angle (16) of at least 120° with the associated rib legs (13, 14). Drainage channel according to Claim 2, characterized in that the side ribs (9, 10) each branch into exactly two rib legs (13, 14) at the branching points (11, 12). Drainage channel according to Claim 3, characterized in that adjacent rib legs (13, 14) enclose an angle of at least approximately 60° between them. Drainage channel according to at least one of Claims 1 or 2, characterized in that the side ribs (9, 10) each branch into more than two rib legs (13, 14) at the branching points (11, 12). Drainage channel according to at least one of the preceding claims, characterized in that the wall thickness of the channel walls (3, 4) and the channel bottom (5) is at least approximately the same as the wall thickness of the ribs (8). Drainage channel according to at least one of the preceding claims, characterized in that the wall thickness of the ribs (8) outside of branching points (11, 12) and angles (16) is at least approximately constant. Drainage channel according to at least one of the preceding claims, characterized in that the branching points (11, 12) are at least approximately halfway up the channel walls (3, 4). Drainage channel according to at least one of the preceding claims, characterized in that the adjacent ribs (8) are spaced apart, preferably the side ribs (9, 10) of adjacent ribs (8) are spaced twice as far apart as the bottom ribs (15) of a rib (8 ) or adjacent ribs (8). Drainage channel according to at least one of the preceding claims, characterized in that at least one side brace (17), preferably above the branching points (11, 12), transverse to the ribs (8), the side strut (17) preferably being raised less than the channel walls (3, 4) than the side ribs (9, 10). Drainage channel according to at least one of the preceding claims, characterized in that the supports (6, 7) of the channel body (2) are detachably assigned a cover (18), preferably with a frame interposed, and connected to a with the channel walls (3, 4). Toggle (19) is fixed. Drainage channel according to Claim 11, characterized in that the toggle (19) is held with two ends in both channel walls (3, 4) in a receiving trough (21) in each case, which is delimited on the one hand by a flat stop (22) and on the other hand by a feed bend (23) is accessible, the feed arcs (23) of opposite receiving troughs (21) being arranged in opposite directions and the arc walls of which lie on a common circle around a vertical axis of rotation of the toggle (19). Drainage channel according to Claim 12, characterized in that the toggle (19) is held in the receiving troughs (21) each with a detachable blocking element which prevents the ends of the toggle (19) from twisting into the feed bends (23). Drainage channel according to Claim 13, characterized in that the blocking element is in each case a clamp (24), preferably held in a press fit, which runs transversely over the feed bend (23). Drainage channel according to at least one of the preceding claims, characterized in that the channel bottom (5) has connection means are assigned for connection to a connection adapter (27), which delimit a preferably optionally openable floor drain and preferably comprise an undercut annular groove in which peripheral locking means of the connection adapter (27) can be accommodated in a non-positive and positive manner.

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