A slow-pressure anti-wave folding hinged door

Abstract

The invention relates to a pressure-slowing wave-proof folding hinged door which is mounted at an opening between ship rail wallboards on a ship deck. The door comprises a first door plank and a second door plank. The surfaces of the first door plank and the second door plank are each provided with water holes, the bottom sides of the first door plank and the second door plank are each equipped with universal wheels, and a first side of the first door plank and a second side of the second door plank are respectively equipped with hinge seats which can be hinged to the ship rail wallboards at the two sides of the opening. Of a second side of the first door plank and a first side of the second door plank, at least one side is equipped with a movable pin shaft, and at least one side is equipped with a limiting plate fitting the movable pin shaft. The fitting state of the movable pin shaft and the limiting plate corresponds to the on-off state between the first door plank and the second door plank. The pressure-slowing wave-proof folding hinged door has a simple structure, is of high practicability, has a pressure slowing function, and does not affect normal operation.

Description

technical field [0001] The invention relates to the field of ship safety devices, in particular to a slow-pressure wave-proof folding hinged door that provides safety protection for crew members working on deck. Background technique [0002] For ships such as rescue ships, for the needs of towing operations, an opening (usually at the stern) will be reserved on the ship's sideboard above the deck. During the towing operation, the existence of this opening will pose a great threat to the personal safety of the crew members who do other operations on the deck, and will affect the crew's operational efficiency. Therefore, it is necessary to install a kind of towing that can prevent waves and will not affect the normal towing. Safety device for work. [0003] Considering cost saving, this kind of safety device preferably has a simpler structure and is more convenient to operate. However, in view of the particularity of wind and waves, the general safety device with a simple str...

AI Technical Summary

Problems solved by technology

[0002] Ships such as salvage ships have an opening (usually at the stern) reserved on the ship’s side wall above the deck for the needs of towing operations. During the towing operation, the existence of this opening will pose a great threat to the personal safety of the crew members who perform other operations on the deck, and will affect the crew's work efficiency. Therefore, it is necessary to install a safety device for work

[0003] From the consideration of cost saving, the structure of this kind of safety device is relatively simple, and the operation is more convenient. However, in view of the particularity of wind and waves, the general safety device with simple structure is often poor in pressure resistance, and it is difficult to meet the protection requirements.

Therefore, in the design of the safety device, it should be considered to have a certain pressure relief ability, but there is no safety device in the prior art that can better take into account this ability and has a simple structure and strong practicability

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