JP2003170889A - Hull structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hull structure which has a light weight, is suited for the demand of a current high speed transportation, can be formed in arbitrary shape, can be a suitable outer shape for the streamline of the hull having a smooth and complex curved surface wherein the fluid mechanics travelling resistance of the hull is minimized, and is a strong structure for repeated stress without conducting the vibration of a drive source such as an engine, and the vibration and the impact or the like caused by wave directly to a cabin, and generation of noise, and can grasp the defect of the hull, the crack of the hull caused by the repeated stress and the fatigue fracture or the like successively while navigating without depending on the work in a dock. <P>SOLUTION: This hull structure is composed of a double shell provided with an inner shell and an outer shell arranged apart at certain distance on the outside of the inner shell. The inner shell is formed with a metallic material or a resin/reinforced fiber based composite material and the outer shell is formed with the resin/reinforced fiber based composite material. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hull structure composed of a double hull having an inner shell and an outer shell which is arranged outside the inner shell with a certain distance.

[0002]

2. Description of the Related Art Conventionally, for example, tankers, transport ships,
In a passenger ship, a warship, etc., in consideration of safety, as a structure of the hull, as shown in FIG.
A double layer including an outer shell 104 arranged outside the inner shell 102 at a constant distance and a plurality of stringers 106 supporting the space between the inner shell 102 and the outer shell 104 from the bow to the stern direction. Various double hull system double hull structures 100 composed of the above hulls have been proposed.

[0003]

By the way, in such a double hull structure 100, the inner shell 10 which constitutes the hull structure.
2, the outer shell 104 and the stringer 106 are all made of steel, and are welded between these members. The double hull structure 100 constructed by welding from such a steel material is excellent in rigidity and structural strength and is excellent in production cost, and thus is the main hull structure of today. Widely used.

However, although such a steel material is an excellent structural material, it is heavy in weight and is not sufficient to meet the current requirements for high-speed transportation. Moreover, it is difficult to form a steel material into an arbitrary shape, and in particular, it is not possible to form an outer shape suitable for a streamline shape of a hull having a smooth and complicated curved surface that minimizes the hydrodynamic running resistance of the hull. Very difficult.

Further, the inner shell 102, the outer shell 104, and the stringer 1
In the structure in which 06 is connected by welding, vibration of an engine or other engine, vibration due to waves, impact, etc. are directly propagated to the cabin to generate noise. Further, in such a structure entirely made of steel, since transmission of radio waves is blocked by steel, it is difficult to provide a sonar inside, and since radio waves from the outside are reflected, radar, There was also the problem that the whereabouts would be detected by sonar and warships and submarines.

Further, in such a structure made entirely of steel, the heat insulating property is not good, and the water temperature and temperature are directly conducted to the inside, resulting in poor habitability. There is. In view of such a situation, the present invention is light in weight, is sufficient to meet the current requirements for high-speed transportation, and can be formed into an arbitrary shape, so that the hydrodynamic running resistance of the hull is improved. It is an object of the present invention to provide a hull structure capable of having an outer shape suitable for a streamline shape of a hull having a minimum smooth and complicated curved surface.

Further, according to the present invention, vibration of an engine such as an engine, vibration due to waves, impact, etc. do not directly propagate to the cabin, noise is not generated, and structural strength is strong against repeated stress. It is intended to provide a hull structure. Further, the present invention, without blocking the transmission of radio waves, it is possible to include a sonar inside, moreover, radio waves from the outside is not reflected, without being detected by radar, sonar, The purpose is to provide a hull structure where the whereabouts cannot be detected in warships and submarines.

A further object of the present invention is to provide a hull structure which has good heat insulation and does not directly transmit water temperature or air temperature to the inside, and which is excellent in habitability.

[0009]

The present invention has been made in order to achieve the problems and objects in the prior art as described above, and the hull structure of the present invention comprises an inner shell,
What is claimed is: 1. A hull structure comprising a double hull including an outer shell which is arranged outside the inner shell with a constant spacing, the inner shell being formed of a metal material or a resin / reinforced fiber-based composite material. In addition, the outer shell is formed of a resin / reinforced fiber composite material.

With this structure, since the outer shell is formed of the resin / reinforced fiber composite material, the outer shell is light in weight and is sufficient to meet the present demands for high-speed transportation. The outer shape can be formed into a shape, and the outer shape suitable for the streamline shape of a hull having a smooth and complicated curved surface that minimizes the hydrodynamic running resistance of the hull can be obtained.

Further, since the inner shell is made of a metal material, the inner grain can be structurally optimally designed and manufactured into a simple shape such as a simple cylindrical cross section, and low running resistance in fluid dynamics is taken into consideration. It is freed from shape restrictions that conflict with structural requirements. Moreover, since the outer shell is formed of the resin / reinforced fiber-based composite material, it is possible to provide a hull structure having sufficient structural strength as a whole.

Moreover, since the outer shell is formed of the resin / reinforced fiber composite material, the vibration of the engine such as the engine, the vibration due to the wave, the impact, etc. do not directly propagate to the cabin, and no noise is generated. Also, since the outer shell is made of resin / reinforced fiber composite material, it is possible to have a sonar inside without blocking transmission of radio waves, and yet to reflect radio waves from the outside. Without being detected by radar or sonar, it can provide a hull structure where the whereabouts cannot be detected by warships and submarines.

Further, since the outer shell is made of the resin / reinforced fiber composite material, the heat insulation is good, and the water temperature and temperature are not directly conducted to the inside, and the hull structure is excellent in habitability. Can be provided. Further, the hull structure of the present invention,
Longitudinal members extending from the bow to the stern direction that support the inner shell and the outer shell with a constant distance, and between the inner shell and the outer shell, elastic members are interposed, Alternatively, it is characterized in that it is elastically bonded / bonded.

In this way, an elastic member is interposed between each of the stringer extending from the bow to the stern direction and supporting the space between the inner shell and the outer shell and each of the inner shell and the outer shell. Or because it is elastically bonded and bonded, vibration of the engine such as engine, vibration due to waves, impact, etc. will be absorbed by this elastic member, so structural strength is also strong against repeated stress. And, moreover, such vibration shock
It is possible to provide a quieter and more comfortable hull structure that does not directly propagate to the cabin and does not generate noise.

Further, in the hull structure of the present invention, an elastic member is interposed between each of the inner and outer shells and a lateral partition wall which divides the inner and outer shells into compartments. It is characterized by being mounted or elastically bonded / bonded. In this way, an elastic member is interposed between the lateral partition that divides the inner shell and the outer shell into compartments and the inner shell and the outer shell, or elastic bonding / bonding is performed. Therefore, the vibration of the engine and other engines, the vibration of waves,
Since shocks are absorbed by this elastic member, the structure is structurally strong against repeated stress, and moreover, such vibration shocks do not directly propagate to the cabin and generate noise. A quieter and more comfortable hull structure can be provided.

In the hull structure of the present invention, the inner shell is
It is characterized by being formed from steel materials such as stainless steel. Since the inner shell is formed of a steel material in this way, it has excellent structural strength, has a long life, and requires no maintenance. Further, in the hull structure of the present invention, the outer shell is at least 3 of an outer shell inner skin member, an outer shell outer skin member, and a core material arranged between the outer shell inner skin member and the outer shell outer skin member. It is characterized by being composed of layers.

As described above, since the outer shell has a structure of at least three layers, it is possible to provide a hull structure having extremely good impact absorption, ensuring surface rigidity, and strong structural strength. Is. Further, the hull structure of the present invention,
The elastic member is an elastic adhesive.

Since the elastic member is the elastic adhesive as described above, when the hull structure is composed of the inner shell, the outer shell, the stringer, and the partition wall, the assembling work is simple. , The manufacturing efficiency is significantly improved.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments (examples) of the present invention will now be described in more detail with reference to the drawings. 1 is a sectional view of the entire hull structure of the present invention, FIG. 2 is a partially enlarged sectional view of part A of FIG. 1, and FIG. 3 is a partially enlarged perspective view of FIG.
In FIG. 1, reference numeral 1 indicates the entire hull structure. The hull structure 1 is composed of a double hull 6 including an inner shell 2 and an outer shell 4 which is arranged outside the inner shell 2 with a constant gap.

The inner shell 2 and the outer shell 4 are supported at regular intervals with a plurality of longitudinal members 8 extending from the bow to the stern. In addition, between the inner shell 2 and the outer shell 4,
A plurality of lateral partitions 10 are provided to divide the inner shell 2 and the outer shell 4 into a number of compartments. The stringer 8 is provided with a joint end 8 a on the joint side with the inner shell 2 and a joint end 8 b on the joint side with the outer shell 4.

As shown in FIG. 2, the elastic member 1 is provided between the inner surface 2a of the inner shell 2 and the joint end 8a of the stringer 8.
It is joined via 2. Further, the inner surface 4a of the outer shell 4 and the joint end portion 8b are joined together via an elastic member 14. Further, the joint end 10a of the partition wall 10 and the inner surface 2a of the inner shell 2 and the joint end portion 10b of the partition wall 10 and the inner surface 4a of the outer shell 4 are joined via elastic members 12 and 14, respectively. ing.

In the figure, 15 is a power engine such as an engine, 17 is a floor frame, and 19 is a vibration-proof rubber member. Examples of such elastic members 12 and 14 include rubber (high molecular substances such as natural rubber, synthetic rubber, urethane, silicone rubber, and elastomer resin).
Polymer materials with rubber-like elasticity such as elastic adhesives, silicone-based, urethane-based, and acrylic-based materials can be used, and the rubber elastic force as the industrial material is effective from vibration, shock absorption and impact strength. (Desirable) Among these elastic members, an elastic adhesive is preferable in consideration of workability.

As such an elastic adhesive, a polyurethane / silicone resin-based, acrylic resin-based elastic structure adhesive or the like can be used. As such an elastic adhesive, for example, "silicone sealant (trade name)" (manufactured by Shin-Etsu Chemical Co., Ltd.), "Hamatite (trade name)" (manufactured by Yokohama Rubber Co., Ltd.), "Seekaflex (trade name)" ) ”(Manufactured by Sika) can be used.

The elastic member 12 and the elastic member 14 are
They may be the same or may be different in consideration of the materials of the stringer 8, the inner shell 2 and the outer shell 4. Furthermore, the thickness of the elastic members 12 and 14 is not particularly limited, and may be appropriately selected in consideration of shock absorption and vibration absorption. The inner shell 2 is made of, for example, a steel material such as stainless steel or a metal such as titanium, and retains the rigidity and structural strength of the hull structure. The inner shell 2 may be formed of a resin / reinforced fiber-based composite material like the outer shell 4 instead of being made of such a metal.

On the other hand, the outer shell 4 is disposed between the outer shell inner skin member 16, the outer shell outer skin member 18, and the outer shell inner skin member 16 and the outer shell outer skin member 18, as shown in FIG. Core material 1
3 and 3. Similarly, although not shown, the stringer 8 and the partition wall 10 are also provided with an outer shell inner member,
It is composed of an outer shell outer skin member and a core material arranged between the outer shell inner skin member and the outer shell outer skin member.

In this case, the outer shell inner member and the outer shell member constituting these members are, for example, a polymer material such as a plastic made of a thermosetting resin such as an epoxy resin or a polyimide resin, a glass fiber, For example, a fiber reinforced plastic (FRP (Fiber Reinfo) is formed by compounding with a reinforced fiber material such as carbon fiber or aramid fiber.
rced Plastic)), glass fiber reinforced plastic (GFRP
(Glass Fiber Reinforced Plastic), CFRP (Carbon Fiber Reinforced Plastic)
c)), aramid fiber reinforced plastic (AFRP (Aramid F
iber Reinforced Plastic), PMC (Polymer Metrics)
Resin / reinforced fiber composite materials such as Composite) can be used.

Hard PVC foam (vinyl chloride foamable structural material) can be used as the core member constituting these members, and unsaturated polyester resin, vinyl ester resin, epoxy resin or the like can be used as the resin.
In addition, these members are composed of three layers of an outer shell inner member, an outer shell outer member, and a core material arranged between the outer shell inner member and the outer shell outer member. It suffices to select it appropriately in consideration of the structural strength required for the ship.

A resin transfer molding method (RTM) is used as a method for molding such a resin / reinforced fiber composite material.
(Resin Transfer Molding), VARTM (Vacuum Assist Resin Trans
fer molding)) or other resin injection molding method (RI (Resin Injection Molding)).

[0029]

According to the hull structure of the present invention, since the outer shell is formed of the resin / reinforced fiber composite material, the weight is light and it is sufficient to meet the present requirements of high speed transportation. Moreover, the outer shape can be formed into an arbitrary shape, and the outer shape suitable for the streamline shape of the hull having a smooth and complicated curved surface that minimizes the hydrodynamic running resistance of the hull can be obtained.

Further, since the inner shell is formed of a metal material, the inner grain can be designed and manufactured to have a structurally optimal and simple shape such as a simple cylindrical cross section, and low hydrodynamic running resistance is taken into consideration. It is freed from shape restrictions that conflict with structural requirements. Moreover, since the outer shell is formed of the resin / reinforced fiber-based composite material, it is possible to provide a hull structure having sufficient structural strength as a whole.

Moreover, since the outer shell is formed of the resin / reinforced fiber-based composite material, the vibration of the engine such as the engine, the vibration due to the waves, the shock, etc. do not directly propagate to the cabin, and no noise is generated. Also, since the outer shell is made of resin / reinforced fiber composite material, it is possible to have a sonar inside without blocking transmission of radio waves, and yet to reflect radio waves from the outside. Without being detected by radar or sonar, it can provide a hull structure where the whereabouts cannot be detected by warships and submarines.

Further, since the outer shell is formed of the resin / reinforced fiber composite material, the heat insulation is good, and the water temperature and temperature are not directly conducted to the inside, and the hull structure is excellent in comfort. Can be provided. Further, the hull structure of the present invention,
An elastic member is interposed or elastically bonded / bonded between each of the stringer supporting the space between the inner shell and the outer shell and extending from the bow to the stern direction and each of the inner shell and the outer shell. Since this structure absorbs vibrations of engines and other engines, vibrations by waves, shocks, etc., the structure is structurally strong and resistant to repeated stress. It is possible to provide a quieter and more comfortable hull structure in which no vibration is transmitted directly to the cabin and no noise is generated.

Further, in the hull structure of the present invention, the elastic member is interposed between each of the inner shell and the outer shell and the lateral partition which divides the inner shell and the outer shell into the compartments. Since it is attached or elastically bonded / bonded, vibration of the engine such as an engine, vibration due to waves, impact, etc. will be absorbed by this elastic member, so structural strength is also against repeated stress. It is possible to provide a hull structure that has a strong and strong structure, and that is quieter and more comfortable in which such vibration and shock do not directly propagate to the cabin and noise is not generated.

Further, in the hull structure of the present invention, since the inner shell is formed of the steel material, it is excellent in structural strength, has a long life, and does not require maintenance.
Further, in the hull structure of the present invention, since the outer shell has a structure of at least three layers, the hull structure is extremely excellent in shock absorption, can secure surface rigidity, and has a strong structural strength. Can be provided.

Further, in the hull structure of the present invention, the elastic member is
Since it is an elastic adhesive, when constructing the hull structure from the inner shell, outer shell, stringer, and bulkhead, the assembly work is simple and the manufacturing efficiency is greatly improved. It is an extremely excellent invention that exerts the function and effect.

[Brief description of drawings]

FIG. 1 is a sectional view of the entire hull structure of the present invention.

FIG. 2 is a partially enlarged cross-sectional view of a portion A of FIG.

3 is a partially enlarged perspective view of FIG.

FIG. 4 is a partially enlarged cross-sectional view of a conventional hull structure.

[Explanation of symbols]

1 Hull structure 2 inner shell 2a inner surface 4a inner surface 4 outer shell 6 hull 8 Longitudinal material 8a junction end 8b junction end 10 partitions 10a junction end 10b junction end 12 Elastic member 13 core material 14 Elastic member 16 Outer shell endothelial member 18 Outer shell skin member 100 double hull structure 102 inner shell 104 outer shell 106 Longitudinal material

Claims (6)

[Claims] 1. A hull structure composed of a double hull including an inner shell and an outer shell which is arranged outside the inner shell with a constant distance therebetween, wherein the inner shell is made of a metal material or a resin. A hull structure characterized by being formed from a reinforced fiber-based composite material, and the outer shell being formed from a resin / reinforced fiber-based composite material. 2. An elastic member is interposed between each of the inner shell and the outer shell, and a stringer extending from the bow to the stern direction, which supports the inner shell and the outer shell with a constant space therebetween. The hull structure according to claim 1, wherein the hull structure is mounted or elastically bonded / bonded. 3. A lateral partition that divides the inner shell and the outer shell into a compartment, and between each of the inner shell and the outer shell,
The hull structure according to any one of claims 1 to 2, wherein an elastic member is interposed, or elastically bonded / bonded. 4. The hull structure according to claim 1, wherein the inner shell is formed of a steel material such as stainless steel. 5. The outer shell comprises at least three layers of an outer shell inner skin member, an outer shell outer skin member, and a core material arranged between the outer shell inner skin member and the outer shell outer skin member. The hull structure according to any one of claims 1 to 3, wherein: 6. The hull structure according to claim 2, wherein the elastic member is an elastic adhesive.