JP2015027863A - Floating body structure and hull construction of small ship - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a floating body structure of which a manufacturing process is simplified, a cost is reduced, a handleability is increased and a full performance can be assured, and a hull construction of a small ship.SOLUTION: A floating body structure 300 includes a body part 52, and an attitude maintenance part 53 for maintaining an attitude of the body part. The body part has a substrate part 60 formed by at least a synthetic resin foam, and a covering part 61 formed by covering the substrate part with a covering material. The attitude maintenance part has a penetration part 91 which penetrates the body part. A hull construction of a small ship includes a hull part equipped with a ship bottom part and a side wall part, and an attitude maintenance part which is formed on a bottom surface side of the hull part and maintains an attitude of the hull part. The hull part has a substrate part formed by at least a synthetic resin foam, and a covering part formed by covering the substrate part with a covering material. The attitude maintenance part has a penetration part which projects from the bottom surface side of the hull part, extends in a cross section of the hull part and penetrates in the cross direction.

Description

  The present invention relates to a floating structure and a hull structure of a small vessel.

  2. Description of the Related Art Conventionally, various structures are known as those that float while maintaining their posture on water. For example, an example of a floating structure is a hull structure of a small vessel, and a conventional hull structure of a small vessel is disclosed in Patent Document 1. This hull structure has a hull member formed by FRP and a deck member formed by FRP, and has a foam material filled in a space between the hull member and the deck member. . Moreover, a jetty etc. are mentioned as a floating body and what was described in patent document 2 is known as a conventional floating body structure. This floating body structure is configured by press-fitting a block-like buoyant body into the frame formed by FRP from below the frame.

Japanese Patent Laid-Open No. 2000-185689 JP 7-108982 A

  However, in the hull structure as described above, there arises a problem that the hull manufacturing process by FRP takes time and cost, and a large-scale apparatus is required to uniformly fill the space with the foam material. It was. On the other hand, when the structure of the hull is made simple, there arises a problem that sufficient strength and water tightness cannot be secured, and there is a problem that it is difficult to maintain a posture during stopping or traveling. In addition, a floating structure made of FRP, such as a jetty, has a problem that handling such as transportation is difficult when the size is increased.

  The present invention has been made to solve such a problem, a floating structure that can secure sufficient performance while simplifying the manufacturing process, reducing the cost, further improving the handleability, and An object of the present invention is to provide a hull structure for a small vessel that has a simple structure and can ensure sufficient performance.

  A floating body structure according to the present invention includes a main body portion and a posture maintaining portion that is formed in the main body portion and maintains the posture of the main body portion, and the main body portion includes at least a base body portion formed of a synthetic resin foam, and It has a covering part formed by covering a base part with a covering material, and a posture maintenance part has a penetration part which penetrates a main part.

  In the floating body structure according to the present invention, the main body portion includes at least a base portion formed of a synthetic resin foam and a covering portion formed by covering the base portion with a covering material. Thus, since a floating body can be made lightweight by forming a base | substrate part with a synthetic resin foam with small specific gravity, a floating body can be conveyed easily. Moreover, while forming a base | substrate part with a synthetic resin foam and covering the said base | substrate part with a coating | covering material, a main-body part can be formed in the easy process of forming, According to said process, The shape and size of the main body can be freely determined. In addition, since the main body can be integrated by covering the base portion with the covering portion, sufficient shape retention and durability required for the floating body can be secured, and sufficient water tightness and buoyancy can be secured. Can be secured. A posture maintaining part is formed in the main body part. Since this posture maintenance part has a penetration part which penetrates the main-body part, the attitude | position of a main-body part can be maintained by hold | maintaining water in this penetration part. As described above, the manufacturing process can be simplified, the cost can be reduced, and the handleability can be improved while ensuring sufficient performance as a floating body.

  Further, in the floating body structure according to the present invention, the posture maintaining part may be formed on the bottom surface side of the main body part. As a result, the position of the center of gravity of the floating body in a state where water is held in the penetrating portion is lowered, and the stability of the floating body can be increased.

  Moreover, in the floating body structure according to the present invention, the base portion may be configured by connecting a plurality of blocks of synthetic resin foam. Thereby, since it can convey for every block of a synthetic resin foam, conveyance becomes easy.

  Further, in the floating body structure according to the present invention, the main body portion has a hexahedral shape, and the posture maintaining portion may have a through portion that penetrates the main body portion between the side portions facing each other. With such a configuration, for example, a floating body suitable for use as a pier or the like can be obtained.

  In the floating structure according to the present invention, the base portion may include a reinforcing member that covers a part or all of the outer surface of the structure formed by the synthetic resin foam. With such a configuration, strength and durability can be improved.

  A hull structure of a small vessel according to the present invention includes a hull portion having a bottom portion and a side wall portion, and a posture maintaining portion that is formed on a bottom surface side of the hull portion and maintains the posture of the hull portion. It has at least a base part formed of a synthetic resin foam and a covering part formed by covering the base part with a covering material, and the attitude maintaining part projects from the bottom side of the hull part in the front-rear direction of the hull part. While extending, it has a penetration part which penetrates in the direction of order.

  In the hull structure of a small vessel according to the present invention, the hull part has at least a base part formed of a synthetic resin foam and a covering part formed by covering the base part with a covering material. In this way, the hull can have a simple structure, and the hull can be formed by an easy process of forming a base portion with a synthetic resin foam and covering the base portion with a covering material. The part can be formed. In addition, since the hull can be integrated by covering the base portion with the covering portion, sufficient shape retention and durability required for a small vessel can be secured, and sufficient water tightness can be achieved. Buoyancy can be ensured. As described above, the hull portion has a simple configuration, and the attitude maintaining portion is formed on the bottom surface side of the hull portion. Since this attitude maintenance part has a penetration part penetrating in the front-rear direction, the attitude of the hull part can be maintained by holding water in the penetration part. In addition, it is possible to ensure straightness by passing water through the penetrating part during traveling. By the above, while being a simple structure, sufficient performance as a small ship can be secured.

  Further, in the hull structure of a small vessel according to the present invention, the attitude maintaining portion extends in the front-rear direction and is fixed to the bottom surface side by side in the width direction of the hull portion, and at least a pair of rod-shaped members. A plate-like member that spans between the lower end portions of each other and forms a penetrating portion with the bottom surface. With such a configuration, the posture maintaining portion can be easily formed.

  Further, in the hull structure of a small vessel according to the present invention, the covering portion is formed by spray-coating a urethane-based covering material on the base portion, and the thickness of the covering portion is 3 mm or more on the outer peripheral side of the base portion, It may be 2 mm or more on the inner peripheral side of the base portion. As a result, the strength and durability of the hull can be increased.

  According to the present invention, it is possible to secure sufficient performance as a floating body while simplifying the manufacturing process, reducing the cost, and further improving the handleability. Moreover, while being a simple structure, sufficient performance as a small ship can be ensured.

1 is a perspective view of a small vessel having a hull structure according to a first embodiment of the present invention. It is the perspective view which looked at the small ship which has the hull structure which concerns on 1st embodiment of this invention from the downward direction. 3A is a schematic cross-sectional view taken along line IIIa-IIIa shown in FIG. 1, and FIG. 3B is a schematic cross-sectional view taken along line IIIb-IIIb shown in FIG. . FIG. 4A is a schematic cross-sectional view of the hull, and FIGS. 4B to 4D are schematic cross-sectional views for explaining a method for joining synthetic resin foams. It is a figure which shows the use condition of the small ship which has the hull structure concerning this embodiment. It is a figure which shows the use condition of the small ship which concerns on a comparative example. It is a perspective view of the floating body which has the floating body structure which concerns on this invention. It is the perspective view which looked at the floating body structure which concerns on 2nd embodiment of this invention from the side surface side. It is the perspective view which looked at the floating body structure which concerns on 3rd embodiment of this invention from the side surface side. It is the perspective view which looked at the floating body structure which concerns on 4th embodiment of this invention from the side surface side. It is the schematic which shows the base | substrate part formed combining the block of a synthetic resin foam. It is a perspective view which shows the reinforcement method of a base | substrate part. It is the schematic which shows the connection joint which connects floating bodies.

  Hereinafter, with reference to an accompanying drawing, a suitable embodiment about a ship structure of a small vessel concerning the present invention is described in detail. In the following description, the same or corresponding parts are denoted by the same reference numerals, and redundant description is omitted. The terms “front”, “rear”, “left”, “right”, “upper”, and “lower” correspond to the front-rear direction, the left-right (width) direction, and the vertical direction of the hull.

[First embodiment]
FIG. 1 is a perspective view of a small vessel according to the first embodiment of the present invention. FIG. 2 is a perspective view of the small vessel according to the first embodiment of the present invention as viewed from below. 3A is a schematic cross-sectional view taken along line IIIa-IIIa shown in FIG. 1, and FIG. 3B is a schematic cross-sectional view taken along line IIIb-IIIb shown in FIG. .

As shown in FIGS. 1 to 3, the hull structure 100 of the small vessel 1 according to the present embodiment includes a hull portion 2 and a posture maintaining portion 3 that maintains the posture of the hull portion 2. The hull part 2 includes a ship bottom part 4 constituting the bottom of the small ship 1, a side wall part 6 rising upward from the outer peripheral side of the ship bottom part 4, and seat parts 7, 8, 9. In this embodiment, since the pleasure type small vessel 1 is illustrated, the front side of the hull portion 2 is tapered as viewed from above. Accordingly, the ship bottom 4 has a rectangular shape on the stern side as viewed from above, and has a tapered shape on the bow side. The side wall portion 6 includes a rear wall portion 6A that extends in the width direction on the stern side, and lateral wall portions 6B and 6B that extend in the front-rear direction on both sides in the width direction. The seat parts 7, 8, 9 are provided on the upper surface of the ship bottom part 4 so as to extend in the width direction between the lateral wall parts 6 </ b> B on both sides. The seat portion 7 is provided on the stern side, the seat portion 8 is provided in the center portion, and the seat portion 9 is provided on the bow side. The size of the small vessel 1 is preferably 5 m or less in the front-rear direction and 3 m or less in the width direction. Moreover, the amount of drainage of the small vessel 1 is 40 to 60 kg, and the capacity is 1 to 4 people. Also, the volume of the hull section 2 of the small boat 1 is 0.9m ³ ~1.4m ^3.

  The hull portion 2 includes a base body portion 10 that is a formed body having a hull shape, and a covering portion 11 that covers the entire base body portion 10. The base portion 10 is formed by connecting a plurality of blocks of a synthetic resin foam having a low specific gravity, a high compressive strength and a high rigidity. The covering portion 11 is formed by covering the base portion 10 with a covering material. The covering portion 11 is formed by coating the surface of the base portion 10 by applying a covering material before forming a coating. As shown in FIG. 4 (a), the covering portion 11 maintains the shape of the base portion 10 so that the blocks of the synthetic resin foams connected to each other are integrated. It is formed to wrap up. With such a configuration, the hull portion 2 has an integral structure in which the base portion 10 is wrapped with the covering portion 11. The surface of the hull part 2 (at least the part in contact with water) is in a state where there is no joint between members. 4A is a schematic diagram of the hull portion 2, and the covering portion 11 is schematically shown. However, the actual covering portion 11 is sufficiently thinner than the base portion 10. FIG.

  A specific configuration of the base unit 10 will be described. The base portion 10 includes a plate-like member 14 corresponding to the ship bottom portion 4, a plate-like member 16A corresponding to the rear wall portion 6A, a plate-like member 16B corresponding to the lateral wall portion 6B, and the seat portions 7, 8, and 9. The corresponding members 17, 18, and 19 are connected to each other. Each member 14, 16A, 16B, 17, 18, 19 is partially or entirely made of a synthetic resin foam. Thereby, the base 10 has a structure in which a plurality of blocks of synthetic resin foam are connected. In addition, the base part 10 may include a material (metal or wood) having higher strength than the synthetic resin foam in a portion that needs reinforcement. As wood, low-density synthetic wood or the like for model formation may be applied.

  In this embodiment, as shown to FIG.4 (b)-(d), the plate-shaped member 14 of the ship bottom part 4 is comprised by the synthetic resin foam of thickness 40-50mm. Further, the plate-like member 16B corresponding to the lateral wall portion 6B is configured by joining two synthetic resin foams 31 and 32 together. Each synthetic resin foam 31, 32 of the plate-like member 16B is composed of a synthetic resin foam having a thickness of 15 to 30 mm. As shown in FIG. 4B, for example, the synthetic resin foam 31 and the synthetic resin foam 32 are bonded to each other by bonding the bonding surfaces 31a and 32a of the both foams 31 and 32 with a synthetic resin methanol solution. Made by doing. Further, as shown in FIG. 4B, the end 14a of the plate member 14 and the inner side surface 16Ba on the lower end side of the plate member 16B are provided with a double-sided tape (for example, an unvulcanized butyl double-sided tape) 33. Fixed using. Further, as shown in FIG. 4 (c), an isosceles triangular weight 34 having one equilateral side of 20 to 30 mm is disposed at the inner corner of the ship between the plate-like member 14 and the plate-like member 16B. Then, it is reinforced by fixing with a synthetic resin methanol solution. Further, as shown in FIG. 4 (d), a tapping screw 36 (diameter 4 to 6 mm, length 60 to 80 mm) inserted into the end portion 14a of the plate member 14 from the outer side surface 16Bb side of the plate member 16B. ) Is used to reinforce the fixation between the plate member 14 and the plate member 16B.

  As shown in FIG. 3, the plate-like member 16 </ b> A corresponding to the rear wall portion 6 </ b> A needs reinforcement for attaching the engine EG (see FIG. 1), so the synthetic resin foam 37 having a thickness of 25 to 40 mm The reinforcing plate 38 having a thickness of 9.5 to 12.5 mm is joined to the inside. The reinforcing plate 38 is constituted by a panel, for example. An inner side surface 16Aa in the vicinity of the lower end of the plate-like member 16A is connected to an end portion 14b on the rear side of the plate-like member 14 of the ship bottom portion 4. The end 16Ac in the width direction of the plate member 16A is connected to the inner surface 16Ba near the rear end of the plate member 16B of the lateral wall 6B. In addition, you may employ | adopt the method similar to what is shown in FIG.4 (b)-(d) for the connection method in each connection part. The base body 10 is reinforced by a reinforcing metal fitting 39 on the stern side. The reinforcing metal fitting 39 is made of, for example, an aluminum plate having a thickness of 1 to 3 mm and a width of 40 to 60 mm. The reinforcing metal fitting 39 extends in the front-rear direction along the inner side surface 16Ba of the lateral wall portion 6B, and bends and extends in the width direction along the outer side surface 16Ab of the rear wall portion 6A.

  The members 17, 18, and 19 of the seat portions 7, 8, and 9 are made of a synthetic resin foam having a thickness of 200 to 300 mm, a height of 130 to 170 mm, and a length of 1.5 to 3 m. The lengths of the members 17, 18, and 19 are set to dimensions corresponding to the width of the small vessel 1 (however, when the bow side is tapered as shown in FIG. 1, the length of the member 19 is Shortened accordingly). Here, “thickness” indicates the size in the horizontal direction of the paper in FIG. 3A, “height” indicates the size in the vertical direction of the paper in FIG. 3A, and “length” indicates the size in FIG. The size in the front-rear direction in FIG. The members 17, 18, and 19 are fixed to the upper surface of the plate-like member 14 by pressure bonding using a synthetic resin methanol solution.

  As described above, by joining the synthetic resin foams with a synthetic resin methanol solution (vinyl acetate resin methanol solution adhesive), the base portion 10 can be easily formed, and the covering portion 11 is formed. Sufficient shape retention can be maintained before and after coating of the coating material. In addition, you may apply a butyl tape etc. as an adhesive agent.

  As the synthetic resin foam constituting the base portion 10, a foam made of a closed cell type or open cell type synthetic resin can be used.

  Synthetic resin foams include polyurethane foam (polyurethane foam), polystyrene foam (polystyrene foam), polyethylene foam (polyethylene foam), polypropylene foam (polypropylene foam), ethylene vinyl acetate copolymer foam (EVA foam), Examples include polyethylene terephthalate foam (PET foam), phenol resin foam (phenol resin foam), polyvinyl chloride foam (PVC foam), urea resin foam (urea foam), and acrylic resin foam (acrylic foam). .

The synthetic resin foam has a density of 15 kg / m ³ or more (preferably 20 kg / m ³ or more, more preferably 25 kg / m ³ ), and a bending strength of 15 N / cm ² or more (preferably 22 N / cm ^2). or more, more preferably 30 N / cm ² or more), the compressive strength is 5N / cm ² or more (preferably 8N / cm ² or more, it is preferable to be more preferably 12N / cm ² or higher) (all Value at 23 ° C.).

Particularly preferred as the synthetic resin foam is a polystyrene foam (polystyrene foam). As the polystyrene foam, both an extruded polystyrene foam and a beaded polystyrene foam can be used. At 23 ° C., the density is 25 kg / m ³ or more, the bending strength is 30 N / cm ² or more, and the compressive strength. Is a bead-method polystyrene foam (for example, EPS-B-2 in JISA9511) having a viscosity of 12 N / cm ² or more. The density is preferably 50 kg / m ³ or less.

By setting the compressive strength of the synthetic resin foam to 12 N / cm ² or more, the compressive strain resistance of the base portion 10 can be ensured and the strength of the hull portion 2 can be reliably maintained. Moreover, the buoyancy and carrying property of the small vessel 1 can be improved by setting the density of the synthetic resin foam to 25 kg / m ³ or more and 50 kg / m ³ or less. If it exceeds 50 kg / m ³ , the portability is greatly impaired. Further, by adopting a polystyrene foam as the synthetic resin foam, it is suitable for physical properties such as compressive strength, rigidity, and hydrophobicity, and is suitable for ease of processing and material procurement.

  As the covering material of the covering portion 11, an elastic coating material that forms a waterproof or airtight film can be used. The coating material may be one-pack type or two-pack type, and may or may not cause a curing reaction.

As the covering material, the tensile strength is 1 N / mm ² or more (preferably 2 N / mm ² or more, more preferably 10 N / mm ² or more), and the elongation at break is 200% or more (preferably 300% or more). , more preferably more than 400%), is 5N / mm ² or more tear (preferably 25 N / mm ² or more, it is preferable to be more preferably 50 N / mm ² or higher) (the value in all 23 ° C.) .

  Coating materials include silicone-based coating materials (one or two-component type), polyisobutylene-based coating materials (one-component or two-component type), modified silicone-based coating materials (one-component or two-component type), polysulfide Type coating material (one or two component type), acrylic urethane type coating material (one or two component type), polyurethane type coating material (one or two component type), acrylic coating material (one component type) Or a chloroprene rubber-based coating material (one-component type), and a two-component urethane-based coating material is particularly preferable.

As a two-pack type urethane-based coating material, the tensile strength is 10 to 20 N / mm ² , the elongation at break is 300 to 500%, and the tear strength is 50 to 80 N / mm ² (all values at 23 ° C.) ) Is preferable, and examples of such a covering material include “HC Spray F” manufactured by Hodogaya Bandex Building Materials Co., Ltd.

By adopting a solvent-free fast-curing high-strength polyurethane resin having a tensile strength of 10 N / mm ² or more and a breaking elongation of 200% or more as the covering material, the base portion 10 is entirely covered with the covering portion 11 from the outside. At the same time as securing the shape by tightening, the strength and durability of the hull portion 2 can be enhanced. Moreover, destruction of the coating | coated part 11 by a collision etc. is prevented, seawater etc. do not have the possibility of permeating into a synthetic resin foam, and it can have the fender-proofing effect at the time of landing.

  The thickness of the covering material in the covering portion 11 (that is, the thickness of the covering portion 11) is preferably 3 mm or more on the outer peripheral side of the base portion 10 and 2 mm or more on the inner peripheral side. As a result, the effect described in the previous paragraph can be further ensured. When the thickness of the coating material on the outer peripheral side is less than 3 mm, the polyurethane resin is damaged during use or a swelling phenomenon due to peeling of the resin is likely to occur.

  Next, the posture maintaining unit 3 will be described with reference to FIG. The attitude maintaining unit 3 is provided on the bottom surface 2 a of the hull unit 2. The posture maintaining unit 3 functions as a ballast that secures stability by sinking the hull unit 2 by holding water therein, and also functions as a keel that ensures straightness. The posture maintaining portion 3 is provided at a substantially central position of the bottom surface 2a, and has a through portion 41 that protrudes downward from the bottom surface 2a and extends in the front-rear direction and penetrates in the front-rear direction. Specifically, the posture maintaining unit 3 includes three rod-like members 42A, 42B, and 42C extending in the front-rear direction, and a plate-like member 43 that is fixed to the rod-like members 42A, 42B, and 42C. In addition, as a material of the attitude | position maintenance part 3, the material similar to the synthetic resin foam which comprises the base | substrate part 10 may be applied, but it may not be a synthetic resin foam and materials, such as a timber, may be applied. .

  The rod-shaped members 42A, 42B, and 42C are quadrangular columnar members, and are arranged in the width direction so as to be parallel to each other. A rod-shaped member 42A is disposed on one side in the width direction, a rod-shaped member 42B is disposed on the other side, and a rod-shaped member 42C is disposed between the rod-shaped members 42A and 42B (here, the center in the width direction of the hull portion 2). The rod-shaped member 42A is disposed at a position spaced inward from one end portion in the width direction of the hull portion 2, and the rod-shaped member 42B is disposed at a position separated inward from the other end portion in the width direction of the hull portion 2. The The rod-shaped members 42A, 42B, and 42C are disposed near the center position in the front-rear direction of the hull portion 2, and the front end portions of the rod-shaped members 42A, 42B, and 42C are spaced apart from the front end portion of the hull portion 2 to the inside. Is arranged. The front end portions of the rod-shaped members 42A, 42B, and 42C are disposed at the same position in the front-rear direction. The rear end portions of the rod-shaped members 42A, 42B, and 42C are arranged at positions spaced inward from the rear end portion of the hull portion 2. The rear ends of the rod-like members 42A and 42B are arranged at the same position in the front-rear direction. Since the central rod-like member 42C is shorter in the front-rear direction than the rod-like members 42A and 42B on both sides in the width direction, the rear end portion of the rod-like member 42C is disposed in front of the rear end portions of the rod-like members 42A and 42B. Is done. The size in the width direction and the size in the vertical direction of the rod-shaped members 42A, 42B, and 42C may be substantially the same. The rod-shaped members 42A, 42B, and 42C have their upper ends fixed to the bottom surface 2a.

  The plate-like member 43 has a rectangular shape so as to be bridged between the lower end portions 42a of the rod-like members 42A, 42B, 42C. Both end portions in the width direction of the plate-like member 43 are arranged on the lower end portions 42a of the rod-like members 42A and 42B. The front end portion of the plate-like member 43 is disposed at substantially the same position as the front end portions of the rod-like members 42A, 42B, and 42C. The rear end portion of the plate-like member 43 is disposed between the rear end portions of the rod-like members 42A and 42B and the rear end portion of the rod-like member 42C. The plate-like member 43 forms a penetrating portion 41 with the bottom surface 2a.

  Both ends in the width direction of the penetrating portion 41 are separated by rod-like members 42A and 42B. Moreover, the penetration part 41 is demarcated by the rod-shaped member 42C at the center position in the width direction. Thus, when viewed from the front, the through-portion 41 has a rectangular region formed between the rod-shaped member 42A and the rod-shaped member 42C, and a rectangle formed between the rod-shaped member 42B and the rod-shaped member 42C. (See, for example, FIG. 5A). In addition, in the area | region of the front end part side of the plate-shaped member 43, the penetration part 41 is divided into two area | regions by being divided | segmented by the rod-shaped member 42C, However, In the area | region of the rear end part, the rod-shaped member 42C is interrupted. Therefore, it is an area. For example, the size W in the width direction of the penetrating portion 41 is set to 700 to 1000 mm, the size H in the vertical direction is set to 20 to 60 mm, and the length L in the front-rear direction is set to 700 to 1200 mm. However, these dimensions are examples and are not limited to these. Note that at least a pair of rod-shaped members may be provided so as to restrict both sides of the penetrating portion 41 in the width direction, and the rod-shaped member 42C at the center position may be omitted. In addition, the coating material is applied to the surfaces of the rod-shaped members 42 </ b> A, 42 </ b> B, 42 </ b> C and the plate-shaped member 43 to be covered with the coating portion 11.

  Next, an example of a method for manufacturing the hull structure 100 of the small boat 1 will be described. However, the following description is merely an example of the manufacturing method, and the procedure may be changed as appropriate. First, the synthetic resin foam of each member 14, 16A, 16B, 17, 18, 19 of the base body part 10 of the hull part 2 is cut out. Specifically, a synthetic resin foam board of a predetermined thickness is cut with a jigsaw along a panel board (prepared for each member in advance) and with a special hot wire to cut the details of a member Correspond. A member constituted by joining a plurality of synthetic resin foams (or reinforcing plates) is made into one member by performing a joining operation. Next, the base member 10 having the shape of the hull portion 2 is assembled by connecting the members 14, 16A, 16B, 17, 18, 19 to each other. Further, the rod-like members 42A, 42B, and 42C of the posture maintaining unit 3 are fixed to the bottom surface 2a of the hull part 2 (that is, the lower surface of the plate-like member 14 corresponding to the ship bottom part 4). Next, the coating material before film formation is applied to the entire surface of the base body 10 using a spray gun. When the covering material is cured, the entire base portion 10 is configured to be wrapped by the covering portion 11. Note that it is not necessary to complete the coating of the coating material all at once, and the coating material may be applied to a part of the base portion 10 and cured, and then applied to other parts. After applying the covering material to the bottom surface 2a and the rod-like members 42A, 42B, and 42C, the plate-like member 43 is fixed to the rod-like members 42A, 42B, and 42C.

  Next, operations and effects of the hull structure 100 of the small boat 1 according to the present embodiment will be described.

  First, a conventional small vessel will be described for comparison. A conventional small vessel has a hull member formed by FRP and a deck member formed by FRP, and has a foam material filled in a space between the hull member and the deck member. Yes. In such a conventional small vessel, the hull manufacturing process by FRP takes time and cost, and it is difficult to perform the bonding work accompanying the attachment of the long part for reinforcing the hull. Problems such as dust and gas scattering are generated. In addition, in order to ensure the water tightness of the space between the hull member and the deck member, it is necessary to uniformly fill the foam material, which requires a large-scale device and takes time and cost for manufacturing. Occurs. On the other hand, if the hull has a simple structure so that it can be manufactured by an easy work process, the durability and water tightness required as a small vessel may not be ensured.

  On the other hand, in the hull structure 100 of the small boat 1 according to the present embodiment, the hull portion 2 includes a base portion 10 formed of a synthetic foam and a covering formed by covering the base portion 10 with a covering material. Part 11. In the present embodiment, the hull part 2 is formed by applying a base material part 10 formed by connecting a plurality of blocks of synthetic resin foam and a coating material (before forming a film) to the surface of the base material part 10. And a formed covering portion 11. In this way, the hull portion 2 can be made simple, and the hull portion 2 can be formed by an easy process of connecting a synthetic resin foam and applying a covering material to the surface to form a covering portion. Can be formed. Moreover, since the hull part 2 is integrally formed by wrapping the base part 10 made of a plurality of synthetic resin foams with the covering part 11, sufficient shape retention and durability required for the small vessel 1. Can be secured. In particular, in this embodiment, a synthetic resin foam having a low specific gravity, a high compressive strength and a high rigidity is used to form a hull shape, and the hull shape is left as it is, and a covering material containing a high tensile strength and a high elastic resin. The hull part 2 is integrally formed by wrapping it with the covering part 11. Therefore, it is configured so that there is no internal space such as a space portion between the hull member and the deck member as in a conventional small vessel, and the high compressive strength and high rigidity of the base portion 10 as the core portion The sufficient shape retention and durability required for the small vessel 1 can be ensured by the combined effect with the tensile strength of the covering portion 11 as a shell. In addition, since the base portion 10 is made of a synthetic resin foam, the hydrophobicity is high, and sufficient water tightness and buoyancy are ensured by wrapping with the covering portion 11 and integrating each synthetic resin foam. be able to.

  In addition, since the base portion 10 of the hull portion 2 is formed of a synthetic resin foam which is a material having a low specific gravity and good workability, the degree of freedom in shape design is high and a desired shape can be easily obtained. The small ship 1 having a shape with high safety, stability, propulsion and practicality can be manufactured easily and at low cost.

  Further, in this embodiment, since the base portion 10 is integrally held by the covering portion 11 made of a resin having a high tensile strength, time and cost are required for the hull manufacturing process as in the hull manufacturing process of a conventional small ship made of FRP. Therefore, it is not necessary to take measures to prevent inhalation of dust or gas scattering caused by roughing by sanding of the bonded surface, difficulty in bonding work associated with longage attachment for reinforcing the hull. In addition, when a fast-curing high-strength polyurethane resin is employed as a covering material constituting the covering portion 11, the resin is a solvent-free type, which can contribute to the maintenance of the global environment.

  Further, in the hull structure 100 of the small boat 1 according to the present embodiment, the posture maintaining portion 3 is formed on the bottom surface 2 a of the hull portion 2. Since the posture maintaining unit 3 has the through portion 41 penetrating in the front-rear direction, the posture of the hull portion 2 can be maintained by holding water in the through portion 41. In addition, it is possible to ensure straightness by passing water through the penetrating part 41 during traveling. By the above, while being a simple structure, sufficient performance as the small vessel 1 can be ensured.

  Specifically, referring to FIG. 5 and FIG. 6, the small boat 1 according to the present embodiment having the posture maintaining unit 3 and the small boat 200 in the case where the posture maintaining unit 3 is not provided are compared. FIG. 5 is a diagram showing a usage state of the small vessel 1 having the hull structure 100 according to the present embodiment. FIG. 6 is a diagram illustrating a usage state of the small vessel 200 according to the comparative example. The small vessel 200 according to the comparative example has the hull portion 2 similar to the small vessel 1 according to the present embodiment, but does not have the posture maintaining portion 3. The small vessel 200 according to such a comparative example is in a state where it does not have a portion that functions as a ballast and a portion that functions as a keel.

  As shown to Fig.6 (a), since the small ship 200 which does not have the attitude | position maintenance part 3 does not have a part which functions as a ballast, the draft at the time of a ship stop is shallow (about 5 cm), for example, a fish box foam polystyrene Like the state of floating in water, it may be swept away by wind. In particular, if a headwind is received during traveling, even if zigzag traveling is performed, it is not possible to proceed well, and there is a possibility of fuel shortage. As shown in FIG. 6 (b), the small vessel 200 has a bottom surface that is simply a flat surface and does not have a portion that functions as a keel. . In addition, as shown in FIGS. 6C and 6D, when the water surface is rough during stormy weather, stability cannot be ensured because there is no portion that functions as a ballast, and the water surface is ruffled. (For example, it becomes like a leaf of a tree floating on the water surface), and the straightness also decreases. Further, as shown in FIG. 6 (e), when the occupant is shifted to one side in the width direction of the hull portion 2, the hull portion 2 must maintain the posture only by the surface tension with the water surface. If the limit is exceeded, the hull part 2 may tilt and capsize.

  On the other hand, since the small vessel 1 having the hull structure 100 according to the present embodiment has the posture maintaining unit 3 that functions as a ballast and a keel, it can exhibit good stability and straightness. As shown in FIG. 5 (a), when the ship is stopped, water enters the penetration part 41 of the posture maintenance part 3, so that the water in the penetration part 41 functions as a weight so that the small vessel 1 is stable. Maintained posture. The draft at the time of a stop can be made into 5-10cm, and can be deep enough. For example, as shown in FIG. 5 (e), even when the occupant is shifted to one side in the width direction of the hull portion 2, the hull portion 2 is in a posture by the ballast effect by the posture maintaining portion 3 in addition to the surface tension with the water surface. Therefore, it is possible to reliably prevent rollover due to the bottom surface of the ship bottom being lifted.

  Further, during running, the water flow through the through hole 41 of the posture maintaining unit 3 as shown in FIG. 5 (b) exhibits the same effect as the keel, thereby providing good stability and straightness. Can be secured. In addition, fuel efficiency can be improved by exhibiting good straightness. Further, even when undulations occur on the water surface during stormy weather, water is contained in the penetrating portion 41 of the posture maintaining unit 3 in FIGS. 5 (b) and 5 (c). Therefore, stability can be improved and shaking can be suppressed.

  Further, in the hull structure 100 of the small boat 1 according to the present embodiment, the attitude maintaining unit 3 is between the rod-shaped members 42A, 42B, 42C provided side by side in the width direction and the lower ends of the rod-shaped members 42A, 42B, 42C. And a plate-like member 43 that forms a penetrating portion 41 with the bottom surface 2a. With such a configuration, the posture maintaining unit 3 can be easily formed.

  The present invention is not limited to the embodiment described above.

  For example, the shape of the hull portion is not limited to the above-described embodiment, and may be any shape as long as buoyancy can be generated by having the ship bottom portion and the side wall portion. For example, it may be a box-shaped hull that is rectangular when viewed from above. Further, for example, the ship bottom portion is formed in a flat plate shape and the bottom surface has a flat surface, but the ship bottom portion and the bottom surface may be curved as long as the manufacturing is not excessively difficult. Moreover, the connection mode between the synthetic resin foams is not limited to the above-described embodiment. For example, the plate-like members 16A and 16B may be joined to the upper surface of the edge of the plate-like member 14.

  Further, the configuration of the posture maintaining unit is not limited to the above-described embodiment, and any configuration may be used as long as the ballast effect and the keel effect can be achieved by holding and passing water through the penetrating unit. For example, from the viewpoint of manufacturability, a structure in which a rod-like member and a plate-like member are combined is adopted as the posture maintaining portion, but a plate-like portion (corresponding to the plate-like member) facing the bottom of the hull portion A member integrally formed with a spacer portion (corresponding to a rod-like member) for separating the plate-like portion from the bottom surface may be attached. Also, the shape of the posture maintaining portion is not particularly limited, and for example, an arc-shaped through portion is formed by fixing a plate-like member that curves in an arch shape when viewed from the front to the bottom surface of the hull portion. May be.

  Next, a preferred embodiment of the floating structure according to the present invention will be described in detail.

[Second Embodiment]
A floating body structure 300 according to the second embodiment of the present invention will be described with reference to FIGS. 7, 8, 11, and 13. FIG. 7 is a perspective view of a floating body having a floating body structure according to the present invention. FIG. 8 is a perspective view of the floating structure according to the second embodiment of the present invention viewed from the side. FIG. 11 is a schematic view showing a base portion formed by combining blocks of synthetic resin foam. FIG. 13 is a schematic view showing a connection joint for connecting floating bodies. The floating body having the floating body structure 300 according to the present embodiment can be applied to any structure that floats on the water while maintaining its posture. For example, a floating pier, a marina, a tuna farming ikesu, a lake / ocean cottage It can be applied to other structures such as lake mega solar, fishing squid, seaside park promenade and fishing ground.

  As shown in FIGS. 7 and 8, the floating body structure 300 of the floating body 51 according to this embodiment includes a main body portion 52 and a posture maintaining portion 53 that maintains the posture of the main body portion 52. The main body 52 has a hexahedral shape, and each surface of the bottom portion 54, the upper portion 55, and the four side portions 56 has a rectangular shape. In addition, the floating body 51 which concerns on the example shown in FIG. 8 can be used especially suitably as a jetty in a fishing ground, for example.

  The main body portion 52 includes a base portion 60 and a covering portion 61 that covers the entire base portion 60. The base portion 60 is formed of a single or a plurality of synthetic resin foams (for example, made of foam beads F) having a low specific gravity, a high compression strength, and a high rigidity, and further, a flat plate reinforcing material 62 and a buffer material for reinforcement. 63 and a round shaft reinforcing material 64. The base portion 60 is rotatably supported by a base 70 serving as a base for handrails, mooring columns, anchors, a base fixing shaft 71 for fixing the base 70 to the floating body 51, an arm 73, and the arm 73. And a roller 74. The base portion 60 is formed by connecting a plurality of blocks of synthetic resin foam as shown in FIG. In this case, a synthetic resin foam structure 69 is formed by connecting the synthetic resin foams with a synthetic resin methanol solution (vinyl acetate resin methanol solution adhesive). In addition, the part formed of the synthetic resin foam in the base portion 60 is a synthetic resin foam structure 69. The base portion 60 according to the present embodiment is configured by covering a part or all of the outer surface of the synthetic resin foam structure 69 with a reinforcing member (the above-described flat plate reinforcing material 62 or the like).

  The flat plate reinforcing member 62 is made of, for example, stainless steel or steel, and has a function of increasing strength against twisting, bending, or the like of the base portion. The buffer material 63 is made of, for example, sponge or resin, and is provided on the side portion 56 of the main body portion 52 by pressure bonding using an adhesive. The shock absorbing material 63 relaxes the impact against contact with a ship or the like and protects the floating body 51. The round shaft reinforcing member 64 is made of, for example, stainless steel or steel, and is provided so as to connect two opposing surfaces among the four side portions 56, thereby having a function of increasing strength against tensile in the axial direction. .

  The base 70 is provided on the upper surface of the upper portion 55 of the main body 52 and is fixed to the main body 52 by a base fixing shaft 71 embedded in the main body downward from the base 70. For example, when a handrail is installed to use the floating body 51 on a pier, the base 70 functions as a base of the handrail. In addition to the handrail, it can also be used as a mooring pillar K as shown in FIG.

  The arm 73 is disposed so as to protrude in the horizontal direction from the upper surface side of the side portion 56 of the main body portion 52. The roller 74 is held by the arm 73 so that the rotation axis faces the horizontal direction. Moreover, the roller 74 is hold | maintained so that it may roll on the rail R fixed to the quay G in the perpendicular direction. The rail R may be a lip groove steel (C channel).

  The covering portion 61 is formed by covering the base portion 60 with the above-described covering material (for example, spraying ultrafast hard urethane HC-F with a thickness of 5 mm to 7 mm). The description of the covering material is omitted because it overlaps with that described above, but the covering portion 61 ensures the base portion 60 with sufficient resistance to breakage and surface deterioration. The covering portion 61 is formed by coating the surface of the base portion 60 by applying a coating material before forming a coating, and is formed so as to wrap the entire base portion 60. In the present embodiment, the base portion 60 is formed by connecting a plurality of synthetic resin foam blocks. With respect to the base portion 60, the covering portion 61 integrates the blocks of the synthetic resin foams connected to each other while maintaining the shape of the base portion 60 composed of a plurality of synthetic resin foam blocks. To be formed. Therefore, the main body portion 52 has an integral structure in which the base portion 60 is wrapped with the covering portion 61. As a result, the surface of the main body portion 52 (at least the portion in contact with water) is in a state where there is no joint between members, so that water does not enter the main body portion 52 and the buoyancy is kept constant. be able to.

  A specific configuration of the base portion 60 will be described. As shown in FIG. 11 (a) and FIG. 11 (b), two hexahedral synthetic resin foam blocks are arranged side by side, and a plurality of this layer are stacked one above the other to form a hexahedral shape. The base portion 60 is formed. Each synthetic resin foam block can be selected to have an appropriate size suitable for manufacturing and transportation, for example, a height of 300 to 500 mm. Of the superposed layers, for the lowermost layer, the two synthetic resin foam blocks used are narrower than the blocks used for the other layers. About the block of two synthetic resin foams of the lowest layer, the said gap | interval functions as the penetration part 91 of the attitude | position maintenance part 53 by arrange | positioning so that a clearance gap may be left between these two sheets. In addition, the direction in which two blocks of the synthetic resin foam are arranged side by side in each layer is, for example, arranged in the front-rear direction in a certain layer, arranged in the left-right direction in the upper layer, and again in the upper layer. They are stacked in a staggered direction, such as in the front-rear direction. Accordingly, it is possible to suppress a decrease in rigidity due to twisting or bending of the entire floating body 51 due to the connection of a plurality of synthetic resin foam blocks to form the base portion 60.

  The posture maintaining unit 53 includes a penetration part 91 and a bottom plate 65 that is disposed on the lower surface of the base part 60 and forms a lower wall of the penetration part 91. In the present embodiment, the “penetrating portion” is a cavity that is open at both ends and penetrates the main body portion 52 between the opposing side portions 56 of the four side portions 56, and the cavity extends. It is a part having a structure in which the entire circumference is surrounded by a wall with respect to the direction. The penetrating portion 91 is formed on the bottom surface side of the floating body 51 and penetrates the floating body 51. As the bottom plate 65, a compression FRP plate, a stainless plate, or the like is used. After the bottom plate 65 is attached to the block of the synthetic resin foam, a coating material is sprayed (for example, ultrafast urethane HC-F is sprayed at a thickness of 5 mm to 7 mm). Further, as will be described later with reference to FIG. 10, the bottom plate 65 may be formed of a block of synthetic resin foam. In the present embodiment, the through-hole 91 is configured by arranging the blocks of the synthetic resin foam narrower than the other parts so as to be separated from each other and providing the bottom plate 65 on the bottom surface side. However, the present invention is not limited to such a configuration. Depending on the arrangement and number of blocks of the synthetic resin foam, the portion of the portion where the through-hole 91 is formed also has the same synthetic resin foam as the other portions. A block may be used. Further, it is not necessary to use the bottom plate 65, and the through portion 91 may be formed by covering the bottom side with a block of synthetic resin foam. Moreover, you may use the molded component of the block of the synthetic resin foam in which the penetration part 91 was provided previously.

  The upper surface 55 of the floating body 51 is provided with a coating 72 for preventing slipping or reinforcing (for example, Park M top (ceramic particle non-slip) specification).

  Next, functions and effects of the floating structure 300 according to the present embodiment will be described.

  In the floating body structure 300 according to the present embodiment, the main body portion 52 includes a base portion 60 formed of a synthetic resin foam and a covering portion 61 formed by covering the base portion 60 with a covering material. Thus, since the floating body 51 can be reduced in weight by forming the base | substrate part 60 with a synthetic resin foam with small specific gravity, the floating body 51 can be conveyed easily. In addition, the main body portion 52 can be formed by an easy process of forming the base portion 60 with a synthetic resin foam and forming the covering portion 61 by covering the base portion 60 with a covering material. According to the process, the shape and size of the main body 52 can be freely determined. Moreover, since the main body portion 52 can be integrated by covering the base portion 60 with the covering portion 61, sufficient shape retention and durability required for the floating body 51 can be secured and sufficient. Water tightness and buoyancy can be ensured. The main body portion 52 is formed with a posture maintaining portion 53. The posture maintaining unit 53 has a through portion 91 that penetrates in the horizontal direction. Therefore, when the floating body 51 is installed on the water, the penetrating part 91 sinks in water, and the penetrating part 91 is filled with water. Here, even if a force that tilts the floating body 51 works, the water held by the penetrating portion 91 can function as a ballast (permeable ballast), and the posture of the main body portion 52 can be maintained. As described above, sufficient performance as a floating body can be ensured while improving the handleability.

  Further, in the floating structure 300 according to the present embodiment, the posture maintaining unit 53 is formed on the bottom surface side of the main body unit 52. Since the main body 52 of the floating body 51 is made of a synthetic resin foam having a small specific gravity, the draft of the floating body 51 may be shallow when the floating body 51 is installed on the water. Even in this case, since the penetrating portion 91 is formed on the bottom surface side of the floating body 51, the penetrating portion 91 is easily submerged in water. With such a configuration, the penetrating part 91 of the posture maintaining part 53 is surely filled with water, and the function as a ballast is reliably exerted, and the center of gravity of the floating body in a state where the penetrating part 91 holds water is lowered. , Can improve the stability of the floating body.

  Moreover, in the floating body structure 300 according to the present embodiment, the base portion 60 is configured by connecting a plurality of blocks of synthetic resin foam. Thereby, since it becomes possible to convey for every block of a synthetic resin foam, conveyance by a small truck etc. is attained compared with the floating body by the conventional FRP, and transportation cost can be suppressed. In addition, since the main body portion 52 can be formed by an easy process of forming the base portion 60 with a synthetic resin foam and covering the base portion 60 with a covering material to form the covering portion 61, the floating body 51. The floating body 51 can be formed in the field by transporting it to the sea, lake, pond, etc. where it is installed for each block of the synthetic resin foam. As a result, it is possible to manufacture and install a large floating body that is difficult to transport. Specifically, since a pier made of FRP cannot be disassembled, the maximum length of trailer transport is 2m wide and 12m long. Moreover, since it is transported by a large trailer, the transport cost is increased. On the other hand, in the case of the floating body according to the present invention, on-site assembly and on-site finishing are possible, and transportation by a member unit makes it possible to transport by 2t and 4t flat trucks with low transportation costs.

  In the floating structure 300 according to the present embodiment, the arm 73 is installed so as to protrude in the horizontal direction from the upper surface side of the side portion 56 of the main body portion 52. Further, the roller 74 is held by the arm 73 so that the rotation axis faces the horizontal direction. Moreover, the roller 74 is hold | maintained so that it may roll on the rail R fixed to the quay G in the perpendicular direction. Therefore, when the water level of the sea, lake, pond, etc. fluctuates, or when the draft of the floating body 51 becomes deep due to a person or luggage being placed on the floating body 51, the roller 74 rolls on the rail R, so that the floating body 51 can move up and down while keeping the level, and can stay at a certain distance from the quay without being blown by wind or waves.

  In addition, in this embodiment, as shown to Fig.13 (a), the some floating body 51 can also be connected and used. In this case, the floating body 51 is connected using the connection joint 95 shown in FIG. The connection joint 95 is formed by covering the hexahedron-shaped hard rubber material 96 with a covering material (for example, spraying an ultrafast hard urethane-based covering material with a thickness of 5 mm to 7 mm) to form a covering portion 97. The connecting joint 95 is bridged between both ends of the upper part 55 of the floating body 51 arranged side by side, and the hard rubber material 96 constituting the connecting joint 95 and the base portion 60 of the floating body 51 are arranged as shown in FIG. Adjacent floating bodies 51 can be connected by connecting L angles 87 arranged on each side with a stainless steel screw 98. Moreover, the clearance gap between the floating bodies 51 connected can be adjusted by adjusting the dimension of the hard rubber material 96 and the position of the stainless steel screw 98. As a result, the floating body 51 can be expanded to a required length and width, and can be easily applied to piers, aquaculture ginger, lake cottages and the like having various sizes and shapes.

[Third embodiment]
With reference to FIG. 9, the floating body structure 300 which concerns on 3rd embodiment of this invention is demonstrated. FIG. 9 is a perspective view of the floating structure according to the third embodiment of the present invention viewed from the side. The floating body 51 according to the third embodiment has an anchor chain 81 and an anchor 82 at the tip of the anchor chain 81 instead of the arm 73 and the roller 74, and the floating body structure 300 according to the second embodiment. Mainly different.

  As shown in FIG. 9, in the floating structure 300 according to the third embodiment, eyebolts 80 are attached to both sides of the opposing side portion 56 of the main body portion 52, and anchor chains 81 are suspended from the eyebolts 80, respectively. The anchors 82 are respectively attached to the ends of the anchor chains 81. A wire rope is installed on the seabed, and the anchor 82 or anchor chain 81 and the wire rope are fixed. As a result, the floating body 51 can move up and down when the water level of the sea, lake, pond, etc. fluctuates, or when the draft of the floating body 51 becomes deep due to a person or luggage being placed on the floating body 51. It can be kept at a certain distance from the quay without being swept away by the waves. Alternatively, the anchor chain 81 may be fixed to a wire rope (not shown) installed on the sea floor without attaching the anchor 82 to the tip of the anchor chain 81.

  The third embodiment is suitable for various uses similar to those described in the second embodiment, but is particularly suitable for a marina, a pier, a squid, a lake mega solar, and a lake / ocean camp building.

[Fourth embodiment]
With reference to FIG.10 and FIG.12, the floating body structure 300 which concerns on 4th embodiment of this invention is demonstrated. FIG. 10 is a perspective view of the floating structure according to the fourth embodiment of the present invention as viewed from the side. FIG. 12 is a perspective view showing a method of reinforcing the base portion. In the floating body 51 according to the fourth embodiment, the L angle 87 and the flat bar 88 are disposed around the base body portion 60 as reinforcing members, and the cushion material 85 is provided around the base body portion 60 to further increase the strength and durability. It is mainly different from the floating structure 300 according to the second embodiment in that it is improved.

  Specifically, the L angle 87 is arranged so as to be along each side of the base portion 60 having a hexahedral shape. By being along each side of the base portion 60, there is a high possibility of contact with a quay, a ship, and the like, and the edge of the floating body 51 where the pressure associated with the collision increases when contacted can be protected.

  Further, a flat bar (flat steel) is formed so as to surround the periphery of the base portion 60 with respect to the two opposing surfaces, the bottom portion 54, and the upper portion 55 that are not provided with the through portion 91 among the four side portions 56. 88 are arranged at equal intervals. Thereby, not only the improvement with respect to the contact with a quay or a ship, but also the twisting or bending of the floating body when a person or a load is placed on the floating body 51 can be prevented. Furthermore, it can be used as a suspension point when the floating body 51 is lifted by a crane by attaching an eyebolt or the like. Moreover, since the weight of the floating body 51 can be adjusted by arrange | positioning these steel materials, draft can be made into an appropriate depth, and it becomes possible to improve stability and reduce shaking.

  In addition, the side body 56 protects the floating body 51 from damage due to impact by disposing an impact absorbing cushion 85 on a surface that may come into contact with a ship or the like. The shock absorbing cushion 85 may be covered with the covering portion 61 after being directly attached to the base portion 60, or the shock absorbing cushion is attached after the base portion 60 is covered with the covering portion 61, and the whole is further covered from above. You may cover with the part 61. FIG.

  Further, in order to prevent damage such as shaving due to the floating body 51 coming into contact with the quay G, a rubber material 86 is disposed on the surface of the side portion 56 facing the quay G. When the arm 73 and the roller 74 are provided on the upper surface side of the floating body 51, the rubber material 86 is provided on the bottom surface side of the floating body 51, so that the inclination of the floating body 51 can be suppressed.

  The present invention is not limited to the embodiment described above.

  For example, the shape of the floating body 51 is not limited to the hexahedron shape, and may be a different shape depending on the shape of the quay to be installed and the purpose of use of the floating body 51. For example, the side portion 56 facing the quay of the floating body 51 may be curved so as to be along the curved quay. In this case, the gap between the quay and the floating body 51 can be narrowed, and people and luggage can be easily and safely moved. Further, the upper surface of the upper part 55 of the floating body 51 may be partially or entirely inclined. In this case, for example, even if the floating body 51 is subjected to waves, water droplets on the upper surface are quickly discharged along an inclination.

  Further, the posture maintaining unit 53 may be provided so as to protrude from the bottom surface side of the main body part 52 without being provided so that the penetration part 91 penetrates the main body part 52. In this case, since the penetration part 91 will be provided in a lower position, the penetration part 91 can hold | maintain water more reliably. Moreover, the penetration part does not need to be provided in the bottom face side of the main-body part. If the penetrating portion 91 is provided at a position lower than the water surface position in the use state in which a person or a load is placed on the upper surface of the floating body 51, at least in the use state, an effect as a permeable ballast can be obtained. . In addition, the posture maintaining unit 53 may have a plurality of through portions 91. In this case, the effect as a ballast becomes larger.

  Moreover, the penetration part 91 does not need to penetrate the floating body 51 only in one direction. For example, you may penetrate in the left-right direction in addition to the front-back direction. Moreover, you may penetrate in the diagonal direction containing the front-back direction component and the left-right direction component. Furthermore, you may penetrate and incline in the direction which added the up-down direction component to the said diagonal direction component. That is, the “penetrating portion penetrating in the horizontal direction” only needs to have at least a directional component extending in the horizontal direction, and may be inclined with a component in the vertical direction. Further, the penetrating portion 91 may not have a rectangular cross section. The cross-sectional shape can be appropriately selected according to the shape of the floating body 51 such as a circle or a triangle, or the type of tool for processing when performing on-site construction. Further, the cross-sectional area of the penetrating portion 91 may be 10% or more of the cross-sectional area of the floating body 51, thereby increasing the effect as a ballast. Further, from the viewpoint of ensuring buoyancy, the cross-sectional area of the penetrating portion 91 may be 40% or less of the cross-sectional area of the floating body 51. The inner wall surface on the right side of the penetrating portion 91 is preferably on the right side from the center of the floating body 51, and the inner wall surface on the left side of the penetrating portion 91 is preferably on the left side of the center of the floating body 51. Thus, by arrange | positioning the penetration part 91 near the center of the floating body 51, it can prevent that the effect as a ballast differs greatly with right and left of the floating body 51, and can ensure stability. Moreover, the penetration part 91 may not be only one with respect to the one floating body 51, but may be provided with two or more.

  Moreover, you may provide a grid | lattice-like wire mesh in the entrance / exit part of the penetration part 91, for example. Thereby, it is possible to prevent floating substances such as dust and driftwood from entering the through-hole 91 and reducing the performance as the ballast.

  Further, the means for providing the penetrating portion 91 is limited to a configuration in which when the hexahedral synthetic resin foam block is connected, the gap is made to function as the penetrating portion 91 by connecting the blocks so that a gap is formed between the blocks. Is not to be done. For example, the through portion 91 may be formed by using a synthetic resin foam block having a shape corresponding to the through portion 91 in advance, or a synthetic resin foam block having a U-shaped cross section. The through-hole 91 may be formed by connecting another synthetic foam block so as to cover the concave portion having a U-shaped cross section.

  Moreover, about the base | substrate part 60 formed by laminating | stacking a some synthetic resin foam block, the block which comprises each layer of a synthetic resin foam block may not be two sheets. Depending on the size and shape of the floating body 51 to be manufactured, a layer composed of a single block or a layer formed by combining three or more blocks may be used. Further, as described above, the base portion 60 is not configured by connecting blocks of synthetic resin foam, but may be a single synthetic resin foam having a through-hole 91 penetrated.

  Further, the base 70 may be embedded in the base portion 60. Such a base 70 can be provided at a position suitable for an installation method and form such as a handrail, a mooring column K, and an anchor fixed to the base. Alternatively, the plurality of bases 70 may be arranged so as to sandwich the synthetic resin foam block, and the base fixing shaft 71 may be connected between them. In this case, the base 70 is firmly fixed to the main body 52, and sinking, pulling out, and shaking of a handrail installed on the base can be suppressed.

  Further, the flat bars 88 used as the reinforcing members may not be arranged at equal intervals. For example, when the position on which a heavy object (fisherman) rides is fixed, such as fishing squid, etc., a particularly high strength is required by arranging the flat bars 88 at a high density at the position where the heavy object is placed. The region can be selectively reinforced. Further, the flat bar 88 is arranged so as to surround the periphery of the base portion 60 with respect to the two opposing surfaces, the bottom portion 54 and the upper portion 55 provided with the through portions 91 of the four side portions 56. Alternatively, an optimal arrangement can be made according to the shape of the floating body 51.

  The connection joint 95 is not limited to the configuration according to the above-described embodiment, and may have any configuration as long as the two floating bodies 51 can be connected.

  DESCRIPTION OF SYMBOLS 1 ... Small ship, 2 ... Hull part, 2a ... Bottom, 3,53 ... Attitude maintenance part, 4 ... Ship bottom part, 6 ... Side wall part, 10, 60 ... Base part, 11, 61, 97 ... Cover part, 41, DESCRIPTION OF SYMBOLS 91 ... Penetration part, 42 ... Bar-shaped member, 43 ... Plate-shaped member, 51 ... Floating body, 52 ... Main-body part, 56 ... Side part, 100 ... Hull structure, 300 ... Floating body structure.

Claims (8)

The main body,
A posture maintaining portion formed on the main body portion and maintaining the posture of the main body portion,
The main body has at least a base part formed of a synthetic resin foam, and a covering part formed by covering the base part with a covering material,
The posture maintaining portion has a floating structure having a penetrating portion that penetrates the main body portion.   The floating structure according to claim 1, wherein the posture maintaining part is formed on a bottom surface side of the main body part.   The floating body structure according to claim 1, wherein the base portion is configured by connecting a plurality of blocks of synthetic resin foam. The main body has side portions facing each other,
The floating structure according to any one of claims 1 to 3, wherein the posture maintaining unit includes a penetrating portion that penetrates the main body portion between the side portions facing each other.   5. The floating body structure according to claim 1, wherein the base portion has a reinforcing member that covers a part or all of an outer surface of a structure formed by the synthetic resin foam. A hull having a ship bottom and a side wall;
A posture maintaining portion that is formed on the bottom side of the hull portion and maintains the posture of the hull portion, and
The hull part has a base part formed of at least a synthetic resin foam, and a covering part formed by covering the base part with a covering material,
The attitude maintaining unit projects from the bottom side of the hull part and extends in the front-rear direction of the hull part, and has a through-hole that penetrates in the front-rear direction. The posture maintaining unit is
At least a pair of rod-shaped members that extend in the front-rear direction and are fixed to the bottom surface side by side in the width direction of the hull part;
The hull structure of a small boat according to claim 6, comprising: a plate-like member that spans between at least the lower ends of the pair of rod-like members and forms the through portion with the bottom surface. The covering portion is formed by spraying a urethane-based covering material on the base portion,
8. The hull structure of a small vessel according to claim 6, wherein a thickness of the covering portion is 3 mm or more on the outer peripheral side of the base portion and 2 mm or more on an inner peripheral side of the base portion.