Flat rubber seal on hatch covers for non-weatherproof or watertight hatch covers on container ships

Abstract

To ensure the flat rubber seal is in place, it is installed 1 meter apart on the right and left sides of the waterline using a 90° angle iron to greatly reduce the penetration of sea and rainwater.

Description

[0001] The problem on container ships that do not have rubber seals on their hatch covers is that rain or seawater can penetrate unhindered between the hatch covers into the cargo holds. The water runs down the sides of the loaded containers, where there is no protection and they are therefore exposed to severe corrosion from rain or seawater. This puts a lot of strain on the container guide rails and the guide rail fastenings rust through to a minimum, resulting in considerable repair work for the ship while in the shipyard. The penetration of sea or rainwater also damages the tank surfaces due to salt water, making it necessary to replace the tank surfaces after material thickness measurements by DNV Class 1. This work is very costly and involves ships being laid up in the shipyard.

[0002] Our solution, for which we are applying for utility model protection, is to mount an additional angle iron (see drawing) on ​​the upper waterline of the hatch cover, where a flat rubber seal can be mounted as a seal. This seal can also be replaced at any time without interrupting normal ship operation. By additionally attaching the angle iron, which holds the flat rubber with screws and a flat iron, the structure of the hatch cover is not affected and can also be removed or replaced by the crew at any time without affecting the ship's operation.

[0003] The flat rubber seals can be installed along the entire length of the hatch cover's upper waterline, or just at the two corners, with a minimum dimension of 1000 mm on each side. This limits the continuous ingress of sea and rainwater into the cargo hold, thus extending the lifespan of the material in the holds, which in turn saves container ships time and money in the shipyard.

[0004] 50 mm angle irons are required for the two outer hatch covers and 40 mm angle irons for the middle hatch cover(s). This dimension is necessary due to the distance between the container bases, as otherwise the angle irons cannot be mounted at the water's edge of the hatch covers. Depending on the model (size) of the container ships, they are equipped with one or more middle hatch covers. The angle iron for the middle hatch covers is always 40 mm due to the distance between the container bases. (see drawing) Drawing legend 1 M12 × 50 mm stainless steel screw 2 flat irons 40 mm × 10 mm 3 flat rubbers 130 mm × 10 mm 4 angle irons 50 mm × 50 mm × 10 mm 5 M16 × 50 mm flat head stainless steel screw 6 hatch cover water edge 7 flat irons 40 mm × 10 mm 8 angle irons 40 mm × 40 mm × 10 mm 9 M12 × 50 mm stainless steel screw 10 flat irons 40 mm × 10 mm 11 flat rubber 130 mm × 10 mm 12 angle irons 50 mm × 50 mm × 10 mm 13 M16 × 50 mm flat head stainless steel screw 14 Hatch cover water edge 15 flat irons 40 mm × 10 mm 16 angle irons 40 mm × 40 mm × 10 mm 17 M12 × 50 mm stainless steel screw 18 flat irons 40 mm × 10 mm 19 flat rubber 130 mm × 10 mm 20 angle irons 50 mm × 50 mm × 10 mm 21 M16 × 50 mm flat head stainless steel screw 22 Hatch cover water edge 23 flat irons 40 mm × 10 mm 24 angle irons 40 mm × 40 mm × 10 mm 1 M12 × 50 mm stainless steel screw 2 flat irons 40 mm × 10 mm 3 flat rubbers 130 mm × 10 mm 4 angle irons 50 mm × 50 mm × 10 mm 5 M16 × 50 mm flat head stainless steel screw 6 hatch cover water edge 7 flat irons 40 mm × 10 mm 8 Winkeleisen 40 mm × 40 mm × 10 mm 9 Lukendeckel Wasserkante 10 Winkeleisen 50 mm × 50 mm × 10 mm a 15 mm b 50 mm c 1000 mm a 40 mm b 1000 mm c 25 mm d 190 mm e 25 mm f Ø14 mm a 1000 mm b 25 mm c 190 mm d Ø14 mm e Ø18 mm f 40 mm g 10 mm h 80 mm j 210 mm k 20 mm m 15 mm a 1000 mm b 25 mm c 190 mm d Ø14 mm e Ø18 mm f 50 mm g 10 mm h 80 mm J 210 mm k 20 mm m 20 mm

Claims

[1] To achieve the desired effect of the flat rubber seal, it is installed at the waterline of the hatch cover on the right and left sides, each 1 meter away, using a 90° angle iron, so that the ingress of lake and rainwater is greatly reduced. [2] Regarding the claim of the flat rubber seal, which is mounted on the 90° angle iron, the flat rubber seals seal themselves by overlapping the two flat rubber seals, since these flat rubber seals are installed on each hatch cover and thus the flat rubber seals automatically overlap themselves in the same position on each hatch cover at the right and left corners.

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