EP3587686B9 - Réseau à structure maillée - Google Patents
Réseau à structure maillée Download PDFInfo
- Publication number
- EP3587686B9 EP3587686B9 EP19181465.6A EP19181465A EP3587686B9 EP 3587686 B9 EP3587686 B9 EP 3587686B9 EP 19181465 A EP19181465 A EP 19181465A EP 3587686 B9 EP3587686 B9 EP 3587686B9
- Authority
- EP
- European Patent Office
- Prior art keywords
- grating
- arches
- embossings
- openings
- cross
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004049 embossing Methods 0.000 claims description 50
- 229910052751 metal Inorganic materials 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000009408 flooring Methods 0.000 claims description 9
- 238000003825 pressing Methods 0.000 claims description 9
- 238000004080 punching Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 18
- 241000894006 Bacteria Species 0.000 description 6
- 238000009825 accumulation Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 235000013305 food Nutrition 0.000 description 5
- 230000007704 transition Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000001580 bacterial effect Effects 0.000 description 3
- 238000005482 strain hardening Methods 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
- E04C2/42—Gratings; Grid-like panels
- E04C2/427—Expanded metal or other monolithic gratings
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C9/00—Special pavings; Pavings for special parts of roads or airfields
- E01C9/10—Steel gratings ; Gratings made of material other than steel
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
- E03F5/06—Gully gratings
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
- E04F15/06—Flooring or floor layers composed of a number of similar elements of metal, whether or not in combination with other material
Definitions
- the present invention relates to a grating with mesh structure, where there is a pattern of openings at the top side of the grating, which allow water to drain away from the top side, where the grating is made from sheet metal, where the openings in the top side of the grating are formed by pressing the sheet metal so that walls are formed between the openings and have the shape of barrel arches, where the top of the arches forms the top of the grating and where the sides of the arches form the side walls of the adjacent openings.
- the present invention is motivated by the desire to produce mesh gratings with a high degree of air passage in relation to perforated gratings, where air passage is typically 15 to 25%. It is further motivated by the desire to produce a grating with a high strength/weight ratio.
- the objective is to produce a grating that is particularly useful in environments with high demands for cleaning and slip resistance, as is the case in the food industry.
- mesh gratings made of intersecting slats. These mesh gratings therefore use several sub-components, and wherever there are joints between the slats intersecting in the grating structure, there is a risk of accumulation of food products and bacterial growth.
- Perforated or safety gratings are known as well. Perforated gratings are made by punching openings in the sheet metal. The punching of openings in such gratings may also lead to crevices and cracks, where food can accumulate and bacteria can grow and are therefore not suitable for use in the food industry.
- perforated gratings generally have an air passage of only 15 to 25%. This means that such perforated gratings are unsuitable for use in floor structures in mezzanine floors.
- the use of perforated gratings with such a small air passage in turn requires the use of separate sprinklers underneath the floor, as the air/water passage water will be insufficient.
- US 1 117 568 An example of a grating, as described in the introduction, is known from US 1 117 568 , DE 2423305 A1 , EP 0288885 A1 and GB 2190114 A . These show gratings with elongated parallel openings which are formed by pressing and punching of the sheet metal in order to shape the walls in the form of barrel arches in between openings. US 1 117 568 provides the basis for the two-part form of claim 1.
- the purpose of the present invention is to describe a grating, which has a mesh structure and where the disadvantages mentioned above have been overcome.
- the purpose is to describe a grating, which offers a particularly good strength/weight ratio and which does not require the use of more bars, such as cross bars, support bars and edge bars, which are commonly used in mesh gratings.
- the purpose of the invention is to describe a grating, which is simple to manufacture with conventional manufacturing technology, and where it is possible to use the manufacturing advantages of perforated gratings.
- a grating of the type mentioned above which is characterised in that there are embossings formed at the top of the arches that extend over the top side of the grating.
- a grating of this type will ensure that the formed thin arches provide great strength with limited use of material.
- the actual structure and the carrying capacity of the arches is particularly well-known in the construction industry, but the same advantages are offered in the production of gratings.
- a grating that is made from intersecting thin arches provides great strength, as it can be produced in load-bearing sections that can provide support in directions perpendicular to each other, which is unique for gratings, where only one load-bearing direction is normally used.
- the use of arches will result in a rounded top, where water will readily run off and down the sides of the side arches through the openings that are formed in the surface of the grating. Since the arches have a smooth transition, there will be no cracks or joints where there is a risk of accumulation of bacteria.
- the grating in accordance with the present invention may therefore be particularly suitable for use in areas subject to major cleaning requirements, such as, for example, in the food industry.
- the barrel arches which form the individual bars, form cross arches in the grating, where the side walls cross each other.
- the cross arches will contribute with strength as well as a smooth transition, without forming any crevices that lead to accumulation of bacteria.
- the production of the side walls between the adjacent openings by means of pressing of part of the sheet metal is a simple process, which is known from the manufacture of perforated gratings.
- the grating can be produced from rolls of metal, steel, pre-galvanised steel, aluminium or stainless steel, depending on the requirements placed on the grating. This can take place automatically, and it is possible to manufacture tools allowing the production of different mesh sizes, i.e. different dimensions for the openings in the grating.
- the grating in accordance with the invention will therefore not only have the benefits of the strength provided by a barrel arch, but also the strength that is achieved in connection with strain hardening of the material during the manufacture of the grating.
- the grating is produced by folding sheet metal for creating elements that correspond to the bars in a mesh grating. This makes it possible to achieve particularly high strength, since the folded material will have a higher strength/weight ratio than that of a corresponding side wall/bar that has been formed in a conventional way.
- the grating is characterised in that the sides of the arches pass at an angle of between 0° and 20°.
- the sides of the arches could generally pass more or less in parallel next to the lower part of the sides of the arches. However, it will also be possible for the sides of the arches after a curved top to have a mutual angle that may be up to about 20°.
- the angle of the sides of the arches can contribute to different strengths in relation to air passage. Optimal air passage will be obtained if the sides of the arches are parallel, but it may also be possible to establish sufficient air/water passage through the grating even if the sides of the arches are made with a mutual angle that is greater than 0°.
- the grating is characterised in that the sheet metal has been punched in connection with the pressing.
- the sheet metal is punched in connection with the deformation that takes place during pressing, it is possible to govern the shape which will be assumed by the openings. This way it is possible to vary the shape of the formed side walls depending on desire and depending on the way of punching of one or more slots facilitating pressing. When making slots, it is only important to ensure that this does not lead to any sharp or pointed edges that form crevices where bacteria can accumulate.
- the pressing regardless if carried out alone or accompanied by punching of the sheet metal, leads to openings in which the side walls form a single continuous side wall, which surrounds the opening and which is made without any joints.
- the grating is characterised in that there are embossings formed at the top of the arch that extend over the top side of the grating.
- Gratings are often subject to requirements for slip resistance. It is therefore possible in connection with embossing to create upward embossings that extend over the top side of the grating. Such embossings will contribute to ensuring slip resistance.
- the grating is characterised in that such embossings constitute closed domed embossings.
- embossings are closed domed embossings, a closed surface will be formed between the openings of the grating.
- domed embossings leads to a rounded transition to the top of the arches, where such embossings are formed.
- the grating is characterised in that there are openings at the top of the embossings.
- An opening may be formed at the top of the embossings. This makes it possible to create a relatively sharp edge for the embossings in the peripheral area of the openings. This improves slip resistance. The formation of a sharp edge removes any risk of bacterial growth, since such a sharp edge directed upwards will not cause accumulation of bacteria.
- the grating is characterised in that the embossings are made using combined punching so that embossings form lugs directed upwards, which are preferably generally triangular.
- a rounding can be formed at the interface between adjacent lugs so as to reduce the risk of accumulation of bacteria.
- the grating is characterised in that the embossings are formed where the barrel arches cross and form cross arches.
- cross arches As mentioned above, intersecting barrel arches form cross arches. Such cross arches are known to constitute a strong structure. The formation of cross arches will give the grating a load-bearing capacity in the directions perpendicular to each other and will therefore make it possible for it to be formed in load-bearing sections that provide support in a longitudinal and transverse direction.
- the grating is characterised in that the sheet metal comprises an edge area that is bent downwards at an angle of roughly 90° for forming the frame side walls of the grating.
- the edge area that is used for the production of the grating comprises an edge area that surrounds the area that is furnished with openings, it is possible to bend this edge area downwards. This will result in the shaping of a structure, where the edge area bent downwards corresponds to the edge bars in a conventional grating. This will therefore result in higher strength for the grating, as the edge areas bent downwards will help furnish the grating with strength.
- the grating is characterised in that there are holes formed in the frame side walls for accommodating the connectors that keep together gratings placed side-by-side for forming flooring.
- a grating in accordance with the invention can be used for various purposes, including for staircases, floor slabs, flooring or the like, where an open grating structure is required in a surface where people can walk and where there is a need for washing.
- connectors such as, for example, screwed joints, can be used for keeping together gratings that are laid side-by-side.
- the flooring will be a load-bearing structure for the sole reason that the grating itself will be a load-bearing structure. There will therefore be very limited need or no need at all for a support that goes across the flooring in a floor structure that is formed of several gratings laid side-by-side.
- the flooring can therefore only be supported at the outer edge area of the flooring, which is formed by a number of gratings that are laid side-by-side.
- the grating is characterised in that the grating has a mesh size of between 10x30 mm and 50x50 mm, for example, a mesh size of 33x33 mm.
- Mesh size means the length/width ratio of the openings formed in the grating.
- the grating is characterised in that openings account for 50% of the surface of the grating.
- Earmarking 50% or more of the grating for openings results in a particularly advantageous structure for floor production. This reduces the demand for sprinklers, since there is no requirement for placing sprinklers underneath a floor that has an opening with air/water passage of 50% or more.
- the grating is characterised in that the grating is made of steel.
- Gratings can usually be made of steel. However, as mentioned before, it will also be possible to use other metals, such as aluminium. Steel can be used in various qualities that may be galvanised or non-galvanised, and it will also be possible to use stainless steel.
- the grating is characterised in that it is made using cold forming.
- the grating can be produced using a single tool, which forms the openings, and a follow-up tool, where the edge area forms the frame side walls. This will be a production method that is already used in connection with perforated gratings, where the use of multiple tools in the manufacturing process is familiar, as well.
- Fig. 1 shows a grating 1 that has a top side 2, where a series of openings 3 are formed, which are limited by walls 4.
- the grating 1 is made of sheet metal, which has frame side walls 5, which are formed in an edge area that surrounds the area, where the openings 3 have been established. Holes 6 are formed in the frame side walls 5 for connecting multiple adjacent gratings using connectors (not displayed) that can take the form of, for example, screw-nut connections.
- Fig. 2 displays a picture of a grating 1' that corresponds to the grating displayed in Fig. 1 .
- This grating has embossings 7 at the top side of the walls 4.
- the embossings 7 are made where the walls 7 cross each other.
- the embossings 7 are made as closed domed embossings 7.
- Fig. 3 displays an additional embodiment for a grating 1", which corresponds to the grating displayed in Fig. 1 .
- This embodiment features embossings 7', which are formed where the walls 4 cross each other.
- the embossings 7' are made with openings 8 at the top of the embossing.
- Fig. 4 displays a grating 1′′′ that corresponds to the grating displayed in Fig. 1 , but featuring embossings 7".
- the embossings 7" are formed by lugs 9, which form openings.
- the embossings 7" are also formed where the walls 4 cross each other.
- Fig. 5 displays an alternative embodiment, where a grating 1 ⁇ is formed with openings 3 in the first part 10 of the top side 2 of the grating. Embossings 11 with lugs 12 are formed in the second part 10' of the top side of the grating. The embossings 11 and lugs 12 correspond to the embossings 7" and lugs 9 that are displayed in Fig. 4 .
- Fig. 6 displays a flooring 13 that is made of four gratings 1' laid side-by-side, as displayed in Fig. 2 .
- Fig. 7 shows an enlarged view, where the opening 3 is observed to be surrounded by four walls 4.
- Each of the walls 4 is formed as a barrel arch.
- Cross arches are formed in an area 14, where the side walls cross each other. The shape of the arches is clearly seen in the cross-sections displayed in Fig. 8-11 .
- a side wall 4 here is observed to be formed with a cross-section with an arch that has a top 15 that forms the top 2 of the grating, and the sides 16 of the arches are directed downwards and form side walls for the adjacent openings 3. It can therefore be said that the wall 4 is made up of two side walls, each of which has been formed of the sides 16 of the arches.
- Fig. 11 displays a cross-section of a barrel arch, and the cross-section of the walls 4 can therefore not be seen.
- the side walls 4 are observed to form a continuous wall that surrounds an opening 3, and there are smooth transitions at the arches. These smooth, curved transitions make it possible for water from the topside to easily flow through the openings 3.
- Fig. 12 displays the embossings 7, which are also illustrated in Fig. 2 .
- Fig. 12 illustrates how the embossings 7 are formed of closed domed embossings. The embossings 7 in this structure will generate slip resistance.
- the embossings 7 are formed in the area 14, where the walls 4 cross each other and next to the top side 2 of the grating.
- Fig. 13 shows various sectional views which, similar to sectional views 8-11, display how the walls 4 are formed of barrel arches that form cross arches wherever the walls 4 cross.
- Fig. 17 displays a grating 1", including more clearly the embossings 7', where openings 8 are formed at the top.
- the openings 8 make possible an additional opening area in the formed grating and simultaneously provide slip resistance.
- the openings 8 can have an edge area 17, which is sharp-edged to improve slip resistance.
- Fig. 18-21 show how the walls 4 are shaped in the form of arches.
- Fig. 22 displays the grating 1′′′ with the embossings 7", which are illustrated in Fig. 4 .
- the embossings 7" are formed of four lugs 9.
- the lugs 9 in the displayed shape are largely triangular, but have a rounded top.
- the lugs 9 will have edges 18, which are sharp-edged and which provide very secure slip resistance.
- Fig. 23-26 also display how this grating is made with walls shaped like barrel arches.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Floor Finish (AREA)
- Sewage (AREA)
Claims (12)
- Réseau (1) à structure maillée, où il existe un motif d'ouvertures au niveau d'un côté supérieur (2) du réseau (1), qui permettent à de l'eau de s'écouler depuis le côté supérieur (2), où le réseau (1) est constitué de tôle, où des ouvertures (3) dans le côté supérieur (2) du réseau (3) sont formées en pressant la tôle de sorte que des parois (4) sont formées entre les ouvertures (3) et ont la forme d'arcs en berceau, où un sommet (15) des arcs forme le sommet (2) du réseau (1) et où des côtés (16) des arcs forment les parois latérales (4) des ouvertures (3) adjacentes, et où les ouvertures (3) sont rectangulaires et les arcs en berceau forment des arcs transversaux dans le réseau (2) où les parois latérales (4) se croisent,
caractérisé en ce qu'il existe des bossages (7) formés au niveau du sommet (15) des arcs qui s'étendent sur le côté supérieur (2) du réseau (1). - Réseau (1) selon la revendication 1, caractérisé en ce que les côtés (16) des arcs ont un angle mutuel qui va jusqu'à environ 20°.
- Réseau (1) selon la revendication 1 ou 2, caractérisé en ce que les bossages (7) sont des bossages (7) bombés fermés.
- Réseau (1) selon la revendication 1 ou 2, caractérisé en ce qu'il existe des ouvertures (8) au niveau d'un sommet des bossages (7).
- Réseau (1) selon la revendication 1 ou 2, caractérisé en ce que les bossages (7) sont constitués par poinçonnage combiné de sorte que les bossages (7) forment des ergots dirigés vers le haut, qui sont de préférence généralement triangulaires.
- Réseau (1) selon les revendications 1 à 5, caractérisé en ce que les bossages (7) sont formés où les arcs en berceau se croisent et forment des arcs transversaux.
- Réseau (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que la tôle comprend une zone de bordure qui est repliée vers le bas selon un angle d'environ 90° par rapport au côté supérieur (2) du réseau (1) pour former des parois latérales de cadre (5) du réseau (1).
- Réseau (1) selon la revendication 7, caractérisé en ce qu'il existe des trous formés dans les parois latérales de cadre (5) pour loger les connecteurs qui maintiennent ensemble des réseaux (1) placés côte à côte pour former un plancher.
- Réseau (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le réseau (1) a un maillage compris entre 10x30 mm et 50x50 mm, par exemple, un maillage de 33x33 mm.
- Réseau (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que des ouvertures (3) représentent 50 % de la surface du réseau.
- Réseau (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le réseau (1) est constitué d'acier.
- Réseau (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le réseau (1) est produit par le procédé de formage à froid.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DKPA201870433A DK180008B1 (da) | 2018-06-22 | 2018-06-22 | Rist med gitterformet struktur |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3587686A1 EP3587686A1 (fr) | 2020-01-01 |
EP3587686B1 EP3587686B1 (fr) | 2022-08-03 |
EP3587686B9 true EP3587686B9 (fr) | 2022-10-05 |
Family
ID=66999722
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19181465.6A Active EP3587686B9 (fr) | 2018-06-22 | 2019-06-20 | Réseau à structure maillée |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP3587686B9 (fr) |
DK (2) | DK180008B1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112359673B (zh) * | 2020-12-21 | 2022-02-22 | 南通市五洲复合材料有限公司 | 一种快速拼接式玻璃钢格栅板 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1117568A (en) * | 1914-05-12 | 1914-11-17 | Hart & Cooley Company | Register top plate. |
US2434763A (en) * | 1945-02-12 | 1948-01-20 | Archie S Feinberg | Heat insulator for heating grilles |
CH362206A (fr) * | 1958-09-24 | 1962-05-31 | Dexion Ltd | Elément métallique de construction et utilisation de cet élément |
KR101574533B1 (ko) * | 2014-03-27 | 2015-12-04 | (주)금곡철강산업 | 스틸 그레이팅 고정장치 |
-
2018
- 2018-06-22 DK DKPA201870433A patent/DK180008B1/da active IP Right Grant
-
2019
- 2019-06-20 DK DK19181465.6T patent/DK3587686T3/da active
- 2019-06-20 EP EP19181465.6A patent/EP3587686B9/fr active Active
Also Published As
Publication number | Publication date |
---|---|
DK3587686T3 (da) | 2022-11-07 |
EP3587686A1 (fr) | 2020-01-01 |
DK201870433A1 (da) | 2020-01-10 |
DK180008B1 (da) | 2020-01-16 |
EP3587686B1 (fr) | 2022-08-03 |
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