JPH02262492A - Hull structure - Google Patents

Abstract

PURPOSE:To improve the stability of a hull and give a good ride simply and surely by providing stabilizers for lowering the center of gravity of the hull utilizing the gravity of water introduced into the insides, on the proper portion of the hull. CONSTITUTION:Hollow cylinder bodies 2 are provided in the longitudinal direction inside a hull B while filling the insides of the hollow cylinder bodies 2 with water 3 to form stabilizers 1. The stabilizers 1 are placed lower than the center of gravity of the hull B while being provided in a pair right-left symmetrically with respect to the center of the hull B. The hollow cylinder bodies 2 are provided so as to pass through the hull from the bow side Sa to the stern side Sb. Accompanying the launching of the hull B, the water 3 outside the hull B is introduced into the insides of the hollow cylinder bodies 2. Thus, by making the weight on the lower portion of the hull B heavier by the amount of the stabilizers 1, the center of gravity of the hull B is lowered. Thereby, the stability of the hull B can be improved while giving a good ride.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a ship structure, and more particularly to a ship structure that reduces the rocking of a ship and makes it difficult to sink.

<Prior Art> Conventionally, ships used for transporting passengers and cargo on water, such as oceans, experience oscillations such as pitching, rolling, heaving, and bow swaying due to the influence of waves.

For passengers, this makes the boat ride uncomfortable and may cause seasickness. In addition, this shaking has a negative impact not only on passengers but also on the ship and cargo, causing dangers such as damage to cargo and fire, damage to the ship due to impact on the hull, water intrusion into the hull, and propulsion equipment. This may cause problems such as a decrease in speed due to idling.

Therefore, as a method to improve these problems,
Fixed rocking fins were installed on both the left and right sides of the hull to reduce rocking. However, although such conventional methods can reduce sway, the fins not only increase navigational resistance and reduce speed, but also increase running costs due to increased propulsion horsepower. There was a drawback. In addition, there was also a drawback that the rocking fins got in the way when berthing, making it difficult to berth.

Therefore, as a method to eliminate the above-mentioned drawbacks, the rocking fins are not fixed to the hull, but are movable on the hull, protruding from both left and right sides of the hull only when necessary, and stored inside the hull when not needed. A movable rocking fin was proposed. However, this movable rocking fin has the problem that the device is complicated and the equipment cost is extremely high.

On the other hand, if the shaking of the ship due to the influence of the waves becomes extremely large, there is a danger that the ship will not only tilt significantly but also sink, which is a serious problem.

In addition, when there are few cargoes or passengers, the center of gravity is higher than when the ship is fully loaded, which increases the risk of sinking due to the ship's heeling. There has been a problem in the past that no appropriate improvement measures have been taken.

<Problems to be Solved by the Invention> In view of these problems of the prior art, the main purpose of the present invention is to reduce the shaking of the ship and increase its restoring force without increasing costs. This makes it difficult to sink even in large waves, and the synergistic effect of these
Our objective is to provide a hull structure that can dramatically improve ship stability and ride comfort.

Means for Solving the Problems According to the present invention, this object consists of a box-shaped outer panel and strength members such as aggregate and horizontal and vertical members arranged inside the outer panel. A ship that is equipped with a hull and can float on or under water while carrying passengers and cargo, has a mechanism that lowers the center of gravity of the ship by the gravity of water such as seawater or fresh water that is actively introduced into the hull. This is achieved by providing a hull structure characterized in that it is provided with stabilizers that obtain.

As described above, according to the present invention, by providing a stabilizer on the hull that can lower the center of gravity of the ship by the gravity of seawater, fresh water, etc. outside the hull, which is actively introduced, the stabilizer's weight is reduced. As the downward weight of the ship increases, the center of gravity of the ship moves downward.

This movement of the center of gravity increases the ship's resilience, which not only reduces the ship's heel even when the ship is rocking extremely hard due to the influence of waves, but also makes it easier to right the ship even if it does list again. The risk of sinking is extremely small.

In addition, even when there are few cargoes or passengers whose center of gravity tends to be high, there is less variation in the height of the center of gravity compared to when the ship is fully loaded, which further reduces the risk of sinking due to the ship's heeling. be done.

On the other hand, by providing a stabilizer on the hull, the downward weight of the ship increases, which increases the resistance to the ship's rocking due to waves, and also increases the resilience of the ship by moving the ship's center of gravity downward. The resistance to shaking increases, and the shaking of the ship due to the waves can be reduced by the shaking of the water in the stabilizer, so the shaking of the ship becomes extremely small and the problems associated with the shaking are eliminated.

<Embodiments> The present invention will now be described in detail with reference to specific embodiments with reference to the accompanying drawings.

1 to 3 show an embodiment of a hull structure based on the present invention.

The stabilizer 1 is formed by a hollow cylindrical body 2, which is a hollow body formed to penetrate inside the hull B in the longitudinal direction, and water 3 within the hollow cylindrical body 2.

Further, the stabilizer 1 is located below the center of gravity of the hull B, and is symmetrical with respect to the center of the hull B. A pair is provided.

The hollow cylindrical body 2 is formed into a hollow cylindrical shape with both front and rear ends open, and has a box-shaped outer panel and strength members such as aggregates and vertical and horizontal members disposed inside the outer panel. It is provided so as to penetrate the hull B from the bow side Sa, which is the front end, to the stern side sb, which is the rear end of the hull B.

When the hull B is launched, the hollow cylindrical body 2 is filled with water 3 such as seawater or fresh water from outside the hull, which is actively introduced.

Therefore, by providing the stabilizer 1, the downward weight of the ship increases by the amount of the stabilizer 1, so that the center of gravity of the ship can be moved downward and the center of gravity of the ship can be lowered.

Next, the operation of the above embodiment will be explained.

According to the above stabilizer, by moving the center of gravity of the ship downward, the restorability is increased, and the rocking of the ship due to the influence of waves, especially the rocking in the left and right direction (low link) and the inclination of the ship body, are reduced.
Also, the risk of the ship sinking can be extremely reduced.

That is, by providing the stabilizer 1 on the hull B that can lower the center of gravity of the ship by the gravity of water 3 such as seawater or fresh water outside the hull that is actively introduced, the center of gravity of the ship moves downward.

This movement of the center of gravity increases the ship's righting ability, and even if the ship's rocking due to the influence of waves becomes extremely large, the inclination of the hull B will be small, and even if it is tilted, it will be easier to recover, reducing the risk of the ship sinking. becomes extremely small.

Furthermore, even when there are few cargoes or passengers whose center of gravity tends to be high, there is less variation in the height of the center of gravity compared to when the ship is fully loaded, so the risk of sinking due to the ship's heeling is further reduced. be done.

On the other hand, by providing the stabilizer 1 on the hull B, the weight of the ship increases, and the resistance to the shaking of the ship due to waves increases, as well as the downward movement of the center of gravity of the ship, the stability increases, and the The resistance to the shaking of the ship increases, and the shaking of the water in the stabilizer can also reduce the shaking of the ship caused by the waves, so the shaking of the ship becomes extremely small and the problems associated with the shaking are eliminated. Ru.

FIG. 4 shows a different embodiment of a stabilizer according to the invention.

That is, as clearly shown in FIG. 4, the stabilizer 1 is different from the embodiment shown in FIGS. 1 to 3 in which the stabilizer 1 is formed through the hull B in the longitudinal direction. 1- is the bow side S where the front end of the hull B is
a and the rear end of the stern side sb, and are provided in pairs symmetrically with respect to the center of the hull B, and are formed through the hull B in the left-right direction. It is formed by a cylindrical body 2 and water 3 within the hollow cylindrical body 2.

According to the above stabilizer, by moving the center of gravity of the ship downward, the restorability is increased, and the rocking of the ship due to the influence of waves, especially the pitching in the longitudinal direction and the inclination of the ship's body, are reduced.
Also, the risk of the ship sinking can be extremely reduced.

Note that this stabilizer 1 is not limited to those of the above embodiments, and the stabilizer 1 can be formed to extend through each of the longitudinal direction of the hull B and the lateral direction of the hull B.

In this case, the downward movement of the ship's center of gravity further increases its resilience, causing the ship to sway due to the influence of waves, especially to the left and right (rolling), fore-and-aft rocking (pitching), and to tilt the ship. This also reduces the risk of the ship sinking.

Further, the stabilizer 1 is not limited to the hollow body 2 formed into a hollow body such as a hollow cylinder whose front end and rear end are open as in the above embodiment;
It can be formed into a hollow body such as a hollow cylinder whose front and rear ends are closed, and a control valve for controlling the inflow and discharge of water is provided at the front and rear ends or the four walls, as necessary. By actively introducing water 3 such as seawater or fresh water from outside the hull into the interior of the hollow cylindrical body 2 using the control valve, the interior can be filled with water or emptied.

Therefore, according to the stabilizer 1, the position of the center of gravity of the ship can be adjusted as necessary, the restorability is adjusted,
To minimize the shaking of a ship due to the influence of waves, especially pitching in the longitudinal direction and inclination of the ship, and to minimize the risk of the ship sinking. I can do two things.

Incidentally, the stabilizer 1 is not limited to that of the above-mentioned embodiment, but the stability is increased by moving the center of gravity of the ship downward, and the rocking of the ship and the inclination of the ship body due to the influence of waves are reduced.
In addition, it may be provided as long as the risk of the ship sinking is extremely small, and it may be provided inside the hull B, such as by a hollow body provided inside the hull B as in the above embodiment, or it may be installed outside the hull B. It can also be formed, for example, by a hollow body provided outside the bottom of the hull B. At this time, the direction is not limited to the front-back direction or the left-right direction as in the above embodiment, but it can also be in the diagonal direction of the hull, or a pair may be provided at symmetrical positions with respect to the center of the hull as in the above embodiment. The arrangement is not limited to this, and may be arranged at an orthogonal position, an obtuse angle position, an offset position, or the like.

Furthermore, this stabilizer 1 is not limited to the one in the above embodiment, and a plurality of pairs can be provided symmetrically with respect to the center of the hull B, so that even if one pair fails, the other stabilizers can suppress the oscillation. This can be done to avoid hindrance to navigation.

In addition, the stabilizer 1 is not limited to one that is always filled with water as in the above embodiment, but can also be one that allows water to freely flow in and out, such that water can flow in and out. can be configured to be controlled by a control valve.

Further, the stabilizer 1 is composed of a water storage part that is always filled with water and a flowing water part that allows water to flow in and out, and the flowing water part is provided with a control valve that controls the inflow and discharge of water. can do.

Furthermore, this stabilizer 1 is not limited to the one of the above embodiment, and the water storage section and the water flow section can be divided and defined into a plurality of rooms.

The stabilizer 1 is not limited to the circular cylindrical shape of the above embodiment, but may have a hollow shape that can be filled with water, such as a polygonal cylindrical shape such as a quadrangular cylindrical shape or a hexagonal cylindrical shape, or an elliptical cylindrical shape. It can also be a cylindrical body such as a non-circular cylindrical shape such as a long cylinder, or a hollow body such as a hollow cube, a hollow rectangular parallelepiped, a hollow pyramid, or a hollow sphere.

Furthermore, the stabilizer 1 is not limited to the one fixed to the hull of the above embodiment, but may be provided removably to the hull, thereby improving the workability of maintenance.

<Effects of the Invention> As described above, according to the present invention, by providing a stabilizer on the hull that can lower the center of gravity of the ship by the gravity of water such as seawater or fresh water outside the hull that is actively introduced, the stabilizer The ship's center of gravity moves downward because the ship's downward weight increases by that amount.

By moving the ship's center of gravity downward by the stabilizer, the ship's righting ability is improved and the ship's navigability is improved, and the ship's rocking and hull tilt due to the influence of waves are minimized. It also has the significant effect of preventing the risk of the ship sinking.

In other words, by installing a stabilizer on the hull that can lower the center of gravity of the ship by the gravity of water such as seawater or fresh water outside the hull, the center of gravity of the ship will move downward.
This movement of the center of gravity increases the ship's resilience, and even if the ship's rocking due to the influence of waves becomes extremely large, the ship's inclination is small, and even if the JIQ is tilted, it is easy to restore, reducing the risk of the ship sinking. It has the effect of becoming extremely small.

Furthermore, even when there are few cargoes or passengers, there is less variation in the position of the center of gravity than when the ship is fully loaded, which has the advantage of further reducing the risk of sinking due to the ship's heeling.

On the other hand, by installing a stabilizer on the hull, the weight of the ship increases, which increases the resistance to the ship's rocking caused by waves.It also increases the resilience of the ship by moving the ship's center of gravity downward, which increases the ship's resistance to the movement of the ship due to waves. The resistance to shaking increases, and the shaking of the water inside the stabilizer can also reduce the shaking of the ship caused by the waves, which makes the shaking of the ship extremely small and eliminates problems associated with the shaking. It has a remarkable effect.

Furthermore, since the above-mentioned device can be used as is in the configuration of a conventional ship and a part of the configuration of the ship can be modified into a specific shape, the configuration of the present invention can be implemented by using the existing device as is. This is extremely effective, as equipment costs and running costs can be extremely low.

[Brief explanation of drawings]

FIG. 1 is a front view showing a hull equipped with a stabilizer according to an embodiment of the present invention. FIG. 2 is a plan view showing a hull equipped with the same stabilizer. FIG. 3 is a side view showing a hull equipped with the same stabilizer. FIG. 4 is a plan view showing a hull equipped with a stabilizer according to a different embodiment of the present invention. 1... Stabilizer 2... Hollow cylindrical body 3... Water B...
... Hull Sa ... Bow side sb ... Stern (rule

Claims (11)

[Claims] (1) The hull consists of a box-shaped outer panel and strength members such as aggregate and horizontal and vertical members placed inside the outer panel, and the boat floats on or under water while carrying passengers and cargo. In a possible ship, the hull structure is characterized in that the hull is provided with a stabilizer that can lower the center of gravity of the ship by the gravity of water such as seawater or fresh water that is actively introduced. (2) The hull structure according to claim 1, wherein the stabilizer is formed of a hollow body and water within the hollow body. (3) The hull structure according to claim 1 or 2, wherein the stabilizer is provided at a position below the center of gravity of the hull. (4) The hull structure according to any one of claims 1 to 3, wherein the stabilizer is provided inside the hull. (5) The hull structure according to any one of claims 1 to 3, wherein the stabilizer is provided outside the hull. (6) The hull structure according to any one of claims 1 to 5, wherein a pair of stabilizers are provided symmetrically with respect to the center of the hull. (7) The hull structure according to any one of claims 1 to 6, wherein the stabilizer is constantly filled with water. (8) Claims 1 to 6, wherein the stabilizer is configured such that water can freely flow in and out of the stabilizer.
The hull structure described in any of the above. (9) The hull structure according to claim 8, wherein the stabilizer is provided with a control valve that controls the inflow and discharge of water. (10) The hull structure according to any one of claims 1 to 6, wherein the stabilizer includes a water storage part that is always filled with water and a water flow part that allows water to flow in and discharge. (11) The hull structure according to any one of claims 1 to 10, wherein the stabilizer is divided into a plurality of rooms.