Hatch cover

A hatch cover and cover plate technology, applied in the field of hatch covers, can solve problems such as the inability to meet its requirements, and achieve the effect of preventing corrosion and achieving good sealing effect.

Inactive Publication Date: 2018-02-23
江苏威和海洋工程设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing steel hatch cover standards can no longer meet its requirements

Method used

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Examples

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Effect test

Embodiment

[0011] A hatch cover of this embodiment includes a cover plate 1, a coaming plate and a plurality of locking devices, the locking devices are used to tightly close the hatch cover, and the bottom surface of the cover plate 1 is fixed with Retaining ring 2, the retaining ring 2 forms a frame structure together with the cover plate 1 by welding more than one reinforcing rib, a sealing ring 4 is arranged between the retaining ring 2 and the folded edge of the cover plate 1, and the gap between the cover plate 1 and the sealing ring 4 A ceramic layer 3 is disposed between them, and the ceramic layer 3 protrudes toward the sealing ring 4 in an arc shape.

[0012] The arc formed by the protrusions of the ceramic layer 3 has a radian of π / 18-π / 12.

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PUM

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Abstract

The invention relates to a hatch cover, and belongs to the technical field of deck machinery. The hatch cover with double ceramic layers comprises a cover plate, a surrounding plate and a plurality oflocking devices, the hatch cover is closed by the locking devices, a retaining ring is fixedly arranged on the bottom surface of the cover plate, the retaining ring and the cover plate collectively form a frame structure by fixedly welding more than one reinforcing rib, the a sealing ring is arranged between the retaining ring and a folding edge of the cover plate, and a ceramic layer is arrangedbetween the cover plate and the sealing ring and projects towards the sealing ring to form an arc shape. According to the hatch cover, the ceramic layer slightly projects towards the sealing ring andis arranged between the cover plate and the sealing ring, so that two sides of the sealing ring are slightly lifted when the sealing ring is deformed as force is applied to the sealing ring, two arc-shaped projecting recessed positions are filled, and sealing effects are better. When the sealing ring fails, the ceramic layer can further protect the cover plate, and the cover plate is prevented from being corroded.

Description

technical field [0001] The invention relates to a hatch cover, which belongs to the technical field of deck machinery. Background technique [0002] At present, the International Association of Classification Societies (IACS) regulations require that for ships manufactured after 2004, the small hatch covers exposed within the 0.25 length of the bow should be reinforced with cover plates and locking devices. . The existing steel hatch cover standards can no longer meet its requirements. Contents of the invention [0003] The technical problem to be solved by the present invention is to propose a hatch cover for the deficiencies of the prior art. [0004] The technical solution proposed by the present invention in order to solve the above-mentioned technical problems is: a hatch cover, including a cover plate, a coaming plate and a plurality of locking devices, and the locking devices are used to tightly close the hatch cover, which is characterized in that: The bottom su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63B19/26
CPCB63B19/26
Inventor 余小兵
Owner 江苏威和海洋工程设备有限公司
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