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An emergency device for preventing ship overturning

An emergency device and technology for ships, which are used in equipment to reduce ship movement, equipment to increase stability of ships, safety of ships, etc. It can solve problems such as limited ability to resist wind and waves, inability to turn around and return, and subversion accidents.

Active Publication Date: 2020-09-11
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some ships with small load capacity, such as warships, tourist speedboats, fishing boats, ferries, etc., have very limited ability to resist wind and waves. The waves form an angle of about 20° and continue sailing against the waves. As the wind and waves increase, the risk also increases, but you cannot turn around and return, otherwise an overturning accident will occur during the turn-around process

Method used

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  • An emergency device for preventing ship overturning
  • An emergency device for preventing ship overturning
  • An emergency device for preventing ship overturning

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] It can be seen from the content of the invention that an emergency device for preventing ship overturning is installed at the bottom of the ship center, including a ship bottom bed frame 1, two or more gravity counterweights 2 installed on the ship bottom bed frame, and an oil pump for controlling the gravity counterweight 2 Shaft device 4 is composed.

[0020] The ship bottom bed frame 1 according to the present invention is provided with many groups of symmetrical notches 3, 5, 6 and 7 on the longitudinal centerline 10 of the bottom with the ship's static gravity centerline 8 as the centerline, The opening of each notch is radially downward, and the inner shape is symmetrical to the longitudinal vertical center plane 9 of the hull. Its design structure is as attached figure 1 shown.

[0021] The gravity counterweight 2 of the present invention is composed of a gravity hammer 2-1, a chain rod 2-2, a fixed ring 2-3 and a rotating shaft 2-4. The other end; the oil pum...

Embodiment 2

[0026] The emergency device for preventing ship overturning provided by the invention can effectively realize the purpose of avoiding pitching or rolling resonance with waves.

[0027] An emergency device for preventing ship overturning provided by the present invention can cause the ship to pitch or roll when the ship encounters wind and waves, and the distance between the center of gravity and the center of water buoyancy of the ship can be increased by hanging the gravity counterweight 2 to adjust the pitch and roll of the ship. The period of rolling makes the period of pitching or rolling of the ship greater or less than the period of wave impact, avoiding pitching or rolling resonance with waves, and effectively reducing the risk of the ship being overturned.

Embodiment 3

[0029] The emergency device for preventing ship overturning provided by the invention can effectively reduce the risk of being overturned when turning around and returning to the voyage in case of strong wind and huge waves.

[0030] When the sailing ship suddenly encounters strong winds and huge waves, causing the ship to pitch or roll violently, and continuing to sail will further increase the risk of overturning, it is decided to return to the voyage to avoid danger according to the fixed status of the ship's cargo and the strength of the wind and waves; All gravity counterweights 2 maximize the distance between the center of gravity of the ship and the center of water buoyancy, maximize the return moment of the ship, maximize the return ability of the ship after it is tilted by the side wave during the turn-around process, and reduce the damage caused by strong winds. The risk of being overturned when turning back in the waves.

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Abstract

The invention relates to an emergency device for preventing ship overturning, belonging to the field of ship manufacturing, which solves the problems that small ships are prevented from subversion andself-rescue reset after subversion when they encounter strong winds and waves when sailing. The emergency device is characterized in that the emergency device is installed in the center of the bottomof the ship and consists of a bed frame of the bottom of the ship, two or more gravity balancing hammers and an oil pump shaft pulling device for controlling the gravity balancing hammer. As the shipencounters strong winds and huge wave, the period of pitch or roll is regulated by vertical weight balancing hammer, avoiding resonance with waves. When the ship turns around, the speed of the ship is reduced, the reset moment of the ship is increased by dropping the gravity balance hammer, the safety of the ship is improved when turning around and sailing back. After the ship overturns due to sudden reasons, the reset moment of the ship is increased by dropping the gravity balance hammer, and the possibility of resetting the subverted ship again is improved.

Description

technical field [0001] The invention relates to the field of ships, in particular to a ship emergency device for resisting wind and waves and preventing subversion. Background technique [0002] Ships are often attacked by waves during navigation, especially when sailing on the sea, they are often hit by surge waves and wind waves. Some ships with small load capacity, such as warships, tourist speedboats, fishing boats, ferries, etc., have very limited ability to resist wind and waves. The waves form an angle of about 20° and continue to sail forward against the waves. As the wind and waves increase, the risk also increases, but you cannot turn around and return, otherwise an overturning accident will occur during the turn-around process. In the face of the above situation, an emergency device to prevent the ship from overturning is designed to reduce the inclination of the ship when it is impacted by the side waves, and reduce the probability of the ship being overturned; ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63B39/00B63B43/04
CPCB63B39/00B63B43/04
Inventor 胡开鑫
Owner NINGBO UNIV
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