EP2084339B1 - Grating - Google Patents

Abstract

A cover grating for a drainage channel or a similarly hollow body which can be installed in the ground is presented, wherein the cover grating is produced in a single piece and more particularly from a sheet metal strip, comprising at least two longitudinal webs extending on the underside of the cover grating and inlet slots formed in the cover grating between these longitudinal webs and comprising transverse webs resulting from the slot forming operation and extending on the lower side of the cover grating wherein the transverse webs are provided at each of their end regions with at least one receiving projection which at least partially engages in to a respective complementarily formed receiving slot in the longitudinal web.

Description

The present invention relates to a cover grate for a drainage channel or the like in a bottom installable hollow body, wherein the cover grate is made of a metal sheet and in particular of a metal strip, with at least two extending on an underside of the grating longitudinal webs and formed between these longitudinal webs in cover grille inlet slots with transverse webs resulting from the forming on the underside of the cover grating.

Such grills are known from the prior art and are used mainly to cover gutters, floor drains, inspection shafts or similar embedded in soils hollow bodies. Preferably, they are used on an upper edge or in a formed on an upper edge of the hollow body frame. Depending on the nature of the installation site such cover grates are exposed to different levels of stress. So there are grids that are designed for pedestrians only and those grids that can withstand driving over heavy traffic.

In principle, however, it is of interest to produce the above-mentioned covering gratings as stable and durable as possible with as little effort as possible.

That's how it shows DE 24 233 05 A1 a cover grille made of a thin sheet with longitudinal webs and in the transverse direction running inlet slots. In order to increase the carrying capacity of the cover grating, the longitudinal webs are designed as carrier webs that have been rolled into a closed profile. This reduces the span of the cover grille between the two support webs and it can be used for grates of the same load capacity, a thinner sheet. In addition to these longitudinal webs resulting from the shaping of the inlet slots bends, which are oriented in the form of transverse webs substantially perpendicular to the longitudinal webs. These transverse webs additionally contribute to load transfer, in particular in the transverse direction.

However, sheet metal grills described above have the disadvantage that despite the use of longitudinal webs, the load dissipation, especially in the transverse direction is insufficient and therefore the sheet thickness of the sheet to be used can not be further reduced. In addition, the above-mentioned covering grates have the disadvantage, especially with defective support conditions, that they have only a low connection rigidity.

This problem is, inter alia, the DE 37 13 971 A1 , It discloses a molded sheet metal cover grid for gutters, which has transverse inlet slots for receiving surface water, which are bounded at the ends by bows. The remaining between the inlet slots webs that must absorb the load, as far as they are straight, stiffened down by angled flanges. For load transfer in the longitudinal direction, the cover orthogonal to these transverse webs on two longitudinal webs. So that the transverse webs are held in their end regions, ie in the vicinity of the sheets, a bead is provided in each case on the longitudinal webs in this region, on which the transverse webs rest.

A completely different device shows the US 5,024,550 , It discloses a cover made of several parts. This comprises two individual longitudinal webs, which are connected by transverse webs arranged orthogonally thereto. The transverse webs engage in receiving slots formed on the longitudinal webs and are fixed against welding out against slipping.

However, the known from the prior art covers have the disadvantage of a very complex manufacturing process and a partially insufficient static load capacity.

The object of the present invention is therefore to provide a cover grate for a drainage channel or one of the same hollow bodies, in particular a sheet metal, which can be installed in a floor, which in comparison with the prior art provides improved load transfer at least in a constant or simplified manner Has manufacturability.

This object is achieved by a cover grating according to claim 1.

In particular, this object is thus achieved by a cover grate for a drainage channel or the like installed in a ground hollow body, wherein the cover grate is made of a metal sheet and in particular of a metal strip and two extending on its underside longitudinal webs and between these longitudinal webs formed in cover grille inlet slots with transverse webs resulting from the shaping on the underside of the cover grating, and wherein the transverse webs each have at least one support section or receiving extension at their front side areas, which at least partially engages in a complementarily shaped receiving section or receiving slot in the longitudinal web.

When the cover grate is loaded over the upper side, the transverse webs resulting from the shaping and allocated to the inlet slots act as the primary load transfer element. Since the transverse webs engage via the support sections formed on their end face areas into the receiving sections which are shaped complementarily in the longitudinal webs, in particular traffic loads can be reliably derived from the transverse webs into the longitudinal webs.

In addition, the cover grate is made of a sheet metal and moreover preferably each longitudinal ridge integrally formed with the cover grate and in particular folded. In particular, the formation of the cover grate from a sheet metal allows the very cost-effective implementation of the aforementioned cover according to the invention.

Preferably, the support portions of the transverse webs to a lower web height than the longitudinal webs. In this way, sufficient lining material is provided in the longitudinal webs to allow a vertical force dissipation over the support portions of the transverse webs vertically downwards into the longitudinal webs. Preferably, the support portion at the end face region of the transverse webs is a hinged support portion. Ausgelinkt here means that only a part of the end face region of the cross bar engages almost exactly in the support section on the longitudinal web, while another part, namely the folded part abuts a side wall of the longitudinal web and does not engage over the support portion in the longitudinal web or its receiving portion. In this way, the longitudinal web is fixed horizontally at least in the direction of the transverse web. In this way, it is also possible to form the crossbar higher in its web height than the longitudinal web, which in particular the load dissipation is improved, since in the here designed as a single-carrier transverse web, the component height, especially in the central region of the cross member, the load transfer property decisively influenced.

Preferably, the support portion is formed such that it at least partially completely penetrates the longitudinal web and projects beyond an outer side of the longitudinal web, wherein it then has a Fixierfalzung or a similar fixing on the projecting support portion. In this way, in particular in interaction with an above-described hinged support section, the longitudinal web is also fixed in a horizontal direction outwards, that is to say in a direction facing away from the cross web. This results in a very torsion-resistant and yet easy to produce cover grating. In addition to the horizontal stiffening leads the above-mentioned design with Fixierfalzung or similar fixing or education with abgesinktem support section in static terms to a clamped mounting of the crosspiece in the longitudinal web. In this way, the load transfer is further improved, especially in the vertical direction.

In addition to the Fixierfalzung can also be used any other known from the prior art for fixing the protruding support portion. Here, among other things, a corresponding expansion, a curl, a narrowing of the support section, a weld point, etc. to call.

Further embodiments of the invention will become apparent from the dependent claims.

• Fig. 1 eine isometrische Darstellung einer ersten Ausführungsform des erfindungsgemäßen Abdeckrostes von schräg oben;
• Fig. 2 eine isometrische Darstellung der Ausführungsform aus Fig. 1 von schräg unten;
• Fig. 3 eine Seitenansicht der Ausführungsform aus Fig. 1;
• Fig. 4 einen detaillierten Teilschnitt einer weiteren Ausführungsform des erfindungsgemäßen Abdeckrostes;
• Fig. 5 einen detaillierten Teilschnitt einer weiteren Ausführungsform des erfindungsgemäßen Abdeckrostes; und
• Fig. 6 bis 9 detaillierte Teilquerschnitte von vier weiteren Ausführungsformen des erfindungsgemäßen Abdeckrostes.

In the following, the invention will be described in more detail with reference to embodiments, which are explained in more detail with reference to drawings. Hereby show:

• Fig. 1 an isometric view of a first embodiment of the invention Abdeckrostes obliquely from above;
• Fig. 2 an isometric view of the embodiment of Fig. 1 from diagonally below;
• Fig. 3 a side view of the embodiment Fig. 1 ;
• Fig. 4 a detailed partial section of another embodiment of the invention Abdeckrostes;
• Fig. 5 a detailed partial section of another embodiment of the invention Abdeckrostes; and
• Fig. 6 to 9 detailed partial cross-sections of four further embodiments of the invention Abdeckrostes.

In the following, the same reference numbers will be used for the same and like parts, sometimes with reference numbers used to differentiate the same components.

The Figures 1 and 2 each show an isometric view of a first embodiment of the invention Abdeckrostes 1. The cover grid shown here is folded from a sheet 32 and has integrally formed with the cover grating 1 longitudinal webs 4. The longitudinal webs 4 have been folded several times from a sheet, so that additionally support areas 10 have formed, which serve a laying of the cover grating 1 on a drainage channel (not shown).

The cover grate 1 also has a plurality of inlet slots 8, which can serve in particular the discharge of surface water, etc. Basically, it should be mentioned here that under the name inlet slot almost every inlet opening is understood, which extend substantially between the two longitudinal webs 4 of the cover grating 1.

The inlet slots 8 are formed here by means of punching and molding from the sheet 32 and each have two transverse webs 6, each parallel to the Inlet slots 8 on an underside 3 of the Abdeckrostes 1 run. In this embodiment, the inlet slots were formed by an incision 34 of the sheet 32 in the region of the transverse webs 4 and a subsequent bending in the direction of the bottom 3. Here are all known from the prior art method applicable as long as the inflow slots are formed with transverse webs.

The longitudinal webs 4 have in one axis with the transverse webs 6 receiving portions 9, which are formed so complementary to the end faces 7 of the transverse webs 6 formed support portions 12 that they can engage in the receiving portions 9. In this way, a load transfer via the transverse webs 6 in the longitudinal webs 4 safely and effectively possible. In addition, the intervention of the support sections 12 also allows a force to be introduced into (with respect to the covering grate 1) horizontal direction, from the transverse webs 6 in the longitudinal webs 4 and vice versa, resulting in a particularly rigid cover grating 1. Clearly visible here, especially in conjunction with Fig. 3 in that due to the incision 34 in the production of the inlet slots 8, a complete reception of the support sections 12 within the receiving sections 9 can take place. In particular, the support sections 12 penetrate the longitudinal webs 4 such that they project beyond an outer side 18 of the longitudinal web 4. These protruding support portions 11 can now be provided with a Fixierfalzung (not shown) to prevent, for example, a sliding apart of support portion 12 and receiving portion 9.

Further shown in Fig. 3 nor a locking element 36 which is also integrally formed from the sheet 32 and here on the longitudinal web 4, and the locking of the Abdeckrostes 1 in a corresponding locking receptacle (not shown) of a drainage channel (not shown) is used.

The FIGS. 4 and 5 show two further embodiments of the invention Abdeckrostes 1 in a partial section, in which case a particular attention is directed to the execution of the support portion 12 on the crossbar 6 and the complementarily shaped receiving portion 9 on the longitudinal web 4. In both figures, the cover grating 1 is superimposed on a support region 10 formed by a double fold on a drainage channel 20 or on a storage region 21 formed on the drainage channel 20. In addition, each cover grate 1 again transverse webs 4, which here in contact with an im Substantially vertical bearing surface 22 and thus allow a horizontal fixation of the cover grating 1.

So shows Fig. 4 an embodiment in which the receiving portion 9 is formed on the longitudinal web 4 corresponding to a height h _{Q of} the transverse web 6, so that the transverse web 6 engages over its entire web height h _Q in the receiving portion 9. The longitudinal web 4 is arranged slightly angled to the vertical in this embodiment, so that only a small part of the support portion 12 protrudes from the outer side 18 of the longitudinal web 4. This projecting support portion 11 can now, as already described in the embodiment described above, provided with a Fixierfalz 15, a weld or a similar fixing and fixed to the longitudinal web.

In Fig. 5 In contrast, the transverse web 6 has a folded-down support section 12, which engages in a complementarily shaped receiving section 9 on the cross member 4. The crosspiece height h _{Q of} the entire crossbar 6 is here so greater than the height h _{F of} the support portion 12. The depressed region 13 is located on an inner side 16 of the longitudinal web 4, so that in particular a horizontal force from the transverse web 6 in the longitudinal web 4 is transferable. Clearly visible here is that due to the hinged support portion 12 enough material is available to ensure a vertical force transmission from the transverse web 6 via the support portion 9 in the longitudinal web 4.

The Fig. 6 to 9 show four further embodiments of the invention Abdeckrostes each in a partial cross-section.

So shows Fig. 6 an embodiment in which the cover grate 1 has a comparison with the previous embodiments modified support area 10. The support area 10 is formed here by the longitudinal web 4 of the Abdeckrostes 1, said longitudinal web 4 by multiple. Bending forms a hollow profile, which can then be inserted into or onto a corresponding bearing surface 21 of the drainage channel 20.

The drainage channel 20 here has a frame-like bearing area 21, to which a vertical bearing surface 22 is integrally connected. These two bearing surfaces or areas 21 oriented substantially orthogonally to one another here, 22 secure the position of the cover grille 1 as soon as it has been placed on the drainage channel 20 or inserted into this.

At multiply folded longitudinal web 4, a receiving portion 9 is again formed in this embodiment, in which engages a formed on the transverse web 6 of the Abdeckrostes 1 support portion 12. The receiving portion 9 and the support portion 12 are formed so that the support portion 12 completely penetrates a portion of the transverse web 6 via the receiving portion 9, so that it forms a protruding support portion 11. This protruding support portion 11 can then, as already described in the preceding embodiments, by means of a Fixierfalzung (not shown or a similar fixation) against being pulled out of the receiving portion 9 are locked.

Fig. 7 shows one too Fig. 6 similar embodiment, in which again the longitudinal web 4 is designed as a multi-folded flat profile, which essentially forms a hollow profile that on the in Fig. 6 shown storage area 21,22 can be placed. In this embodiment, however, the transverse web 6 is provided with a Auslinkung 13, so that this support portion 12 has a lower component height h _f than the transverse web 6 with its component height h _Q. The receiving portion 9 is formed in this embodiment complementary to the support portion 12, so that the support portion 12 penetrates the longitudinal web 4 in the region of the receiving portion 9 so that it penetrates the longitudinal web 4 in the form of a protruding support portion 11. Due to the complementary design of the receiving portion 9 and the support portion 12 results in the region of Auslinkung a region in which the crossbar 6 abuts against the longitudinal web 4, without which there is a displacement of the transverse web 6 in the direction of Fig. 6 shown vertical bearing surface 22 can come.

The 8 and 9 show two further embodiments of the cover grating 1 according to the invention, in which case the longitudinal web 4 is folded L-shaped to form the Aufgerbereiches 10. Shown are each different crosspiece designs, with a different number of deflections 13, 13 'of the crosspiece 6 and respectively corresponding complementary executed receiving sections 9. In the embodiments penetrates the support portion 12 of the cross bar 6, the longitudinal web 4 in the region of the receiving portion 9 such that it has a protruding support portion 11 forms, which then, as already mentioned several times by means of a Fixierfalzung (not shown) can be provided.

LIST OF REFERENCE NUMBERS

1

Abdeckrost

3

bottom

4

longitudinal web

5

top

6

crosspiece

7

Front side area

8th

inlet slot

9

Receiving section or receiving slot

10

support area

11

projecting support section or recording extension

12

Support section or recording extension

13

depressed area

15

fastening fold

16

inside

18

outside

20

drainage channel

21

storage area

22

vertical storage area

32

Sheet metal strip or sheet metal

34

incision

36

locking element

h _Q

Height crossbar

h _F

Height of support section

Claims (5)

1. Cover grating for a drainage gutter (20) or for a similar hollow body which can be installed in a floor, wherein the cover grating (1) is produced from a sheet metal and particularly from a sheet metal strip (32), with at least two longitudinal bars (4), extending on an underside (3) of the cover grating (1), and inlet slots (8) formed out in the cover grating (1) between these longitudinal bars (4), with transverse bars (6), resulting from the forming, extending on the underside (3) of the cover grating (1),
   characterized in that
   the transverse bars (6), on their end face regions (7), have at least one support section (12) in each case, which, for supporting the transverse bars (6), at least partially engages in a locating section (9) which is complementarily formed in each case on the longitudinal bar (4).
2. Cover grating according to claim 1,
   characterized in that
   the support section (12), on the end face region (7) of the transverse bar (6), is a disengaged support section (12).
3. Cover grating according to one of the preceding claims,
   characterized in that
   the support section (12) at least partially fully penetrates the longitudinal bar (4) and projects beyond an outer side (18) of the longitudinal bar (4), and on the projecting support section (11) has a lock seam (15) or a similar fixing element.
4. Cover grating according to one of the preceding claims,
   characterized in that
   the longitudinal bar (4) is formed as an essentially multiply bent hollow profile.
5. Cover grating according to one of the preceding claims,
   characterized in that
   the longitudinal bar (4) is formed as an essentially multiply bent, especially C-shaped, hollow profile, which is essentially open in the direction of the transverse bar (6).

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