Types Of Ship Hatch Covers

- Sep 12, 2017 -

First, the ship's open deck on the deck of the cargo compartment at the opening of the lid, usually steel, to ensure that the cargo compartment openings of the close, common folding, side open, hanging off and so on.

Second, the folding hatch cover: the hatch is divided into several pieces, between the hinges or other equipment connected to rely on flip and folding to open and close the mechanical hatch cover. Its cover often in pairs, so the number of hatch covers even more. The number of blocks is dependent on the length of the hatch and the space between the hatchways. The cover plate usually has a flat roof, the girders are arched downwards and are offset from the position of the adjacent girders in order to be able to fit each other to reduce the length of the collection. Its positioning by the connecting device to ensure that it is not necessary to set the guide drag device, but the need to create a guide roller slope, so that the cover plate roller in the closing process will not be due to contact with the roller track surface and the whole cabin cover overturned, the other Each accessory is similar to a rolling hatch. According to the collection of points are high collection type and low collection close type two. The former is stored in the hatch plate above the hatchboard, from one to two pairs of cabinets connected into a pair of one-way or open upright stored in the hatch end, the collection height, small length, suitable for hatch between The length of the short and highly unrestricted on board; the latter for the multi-deck cover multiple folding, the cover between the chain with a chain or linked to the link. The hatch cover is moved to the place where the cover is placed on a rail below the hatch coaming or the hinge arm is hinged on the deck hinge. Requires a collection of high collection and roll between the hatch between the cover for the length of the collection is not limited and highly limited open deck long hatches. Folding hatch commonly used cable drive, the use of cargo machinery or dedicated hydraulic winch drive opening and closing. In recent years, more use of self-powered hydraulic hinge opening and closing.

Third, the role:

1, to ensure that the goods are not subject to loss;

2, to ensure that the hull watertight;

3, can be low resistance to large cargo pressure.

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