WO2014042246A1

WO2014042246A1 - Life boat

Info

Publication number: WO2014042246A1
Application number: PCT/JP2013/074858
Authority: WO
Inventors: 和夫島村; 貴弘島田; 亮介塩永; 孝昌由井
Original assignee: 株式会社Ihi
Priority date: 2012-09-14
Filing date: 2013-09-13
Publication date: 2014-03-20
Also published as: JP2014073825A; JP6338040B2

Abstract

An airtight life boat (1) configured of a bottom structure (11) in which a space for accommodating passengers is formed, and a top structure (12) covering the top of the bottom structure (11), a shock absorber (2) being positioned around the outer periphery of the bottom structure (11) and the top structure (12) near the waterline. The bottom structure (11) has fenders (3) positioned on the left-hand side and the right-hand side of the bottom surface. The life boat (1) may also have a reinforcing material made of gold along a joint (13), the reinforcing material covering the entire periphery of the joint (13). With this life boat, damage to the hull can be minimized even when the ship is drifting due to an uprushing tsunami or an undercurrent.

Description

Lifeboat

The present invention relates to a lifeboat, and more particularly to a lifeboat suitable for evacuation against a tsunami.
This application claims priority based on Japanese Patent Application No. 2012-202457 filed in Japan on September 14, 2012 and Japanese Patent Application No. 2013-40800 filed in Japan on March 1, 2013. The contents are incorporated herein.

In order to ensure the safety of ships, the SOLAS Convention (International Convention for the Safety of Life on Life at Sea) stipulates that all ships should have lifeboats that can be boarded. As the lifeboat, various forms such as an open type and an enclose type are adopted (for example, see Patent Document 1).

The lifeboat described in Patent Document 1 relates to an enclosed lifeboat. Such an enclosing lifeboat is generally composed of a main body having a hull shape and a canopy that covers the upper portion of the main body. Moreover, the lifeboat described in Patent Document 1 has a foamed polystyrene disposed inside the canopy, and the foamed polystyrene has a function as a buoyancy member for the lifeboat and a cushioning material for the occupant. .

Japanese National Utility Model Publication No. 61-54996

By the way, when a tsunami arrives, there are many people on the ground, such as sick people, elderly people, and children, who cannot evacuate to a high ground by themselves. Therefore, it is effective from the viewpoint of lifesaving to previously install a lifeboat as described above in the vicinity of facilities such as hospitals, welfare facilities for the elderly, kindergartens and nursery schools. Since the tsunami contains a lot of debris, it is preferable to use an enclosed lifeboat as described in Patent Document 1 rather than an open lifeboat.

However, the above-mentioned lifeboat is constructed for the purpose of leaving the ship in the event of a marine accident such as the grounding or capsizing of the ship, and has a problem that its strength is weak to use for evacuation against a tsunami. For example, a tsunami contains a large number of debris and not only can collide with debris during the drift, but there are many structures on the ground, such as buildings and piers. There is also a possibility of colliding with a building.

Therefore, when a lifeboat is drifting due to a tsunami run-up or pulling wave, it may collide with buildings such as buildings or piers at high speed, or high-speed rubble may be thrust into the building There is also a possibility. Such an event cannot occur in a normal marine accident, and conventional lifeboats are not designed to cope with the above-described event.

The present invention was devised in view of the above-described problems, and provides a lifeboat capable of suppressing damage to a hull even when drifting due to a tsunami or pulling wave that goes up. Objective.

According to a first aspect of the present invention, there is provided a sealed lifeboat composed of a lower structure that forms a space for accommodating an occupant and an upper structure that covers an upper portion of the lower structure. A lifeboat in which a buffer is arranged on an outer periphery of the lower structure or the upper structure.

According to a second aspect of the present invention, in the first aspect, the shock absorber is disposed on a bow side portion disposed on a bow portion, a stern portion shock absorber disposed on a stern portion, and a ship side portion. And the horizontal thickness of the bow buffer or the stern buffer is greater than the horizontal thickness of the ship buffer.

According to a third aspect of the present invention, in the first or second aspect, the buffer may be directly fixed to the lower structure or the upper structure, or the lower structure and the It is fastened and fixed by a belt member that is stretched over a locking member arranged in the upper structure.

According to a fourth aspect of the present invention, in the first aspect, a metal reinforcing material covering the joint is provided along the joint between the lower structure and the upper structure. Furthermore, in a fifth aspect according to the present invention, in the fourth aspect, the buffer includes: a lower buffer disposed in the lower structure; and an upper buffer disposed in the upper structure. And the lower shock absorber is fastened and fixed by a lower belt member spanned by a locking member disposed on the lower structure and the reinforcing member, and the upper shock absorber is fixed on the upper structure and the reinforcing member. It is fastened and fixed by an upper belt member that is stretched over a locking member disposed on the material.

According to a sixth aspect of the present invention, there is provided a bow portion reinforcing body connected to the reinforcing member and projecting forward of the bow portion in the fourth aspect, and the buffer body is disposed outside the bow portion reinforcing body. Or on the inside and outside. Further, in a seventh aspect according to the present invention, in the sixth aspect, the bow portion reinforcing body has a load receiving portion disposed in front of the bow portion, and a connecting portion connected to the reinforcing material. ing.

In an eighth aspect according to the present invention, the buffer body is divided into a plurality of block bodies, and these block bodies include a bag body capable of accommodating a buffer material therein, and a width direction of the bag body. And a restricting member that suppresses deformation. According to a ninth aspect of the present invention, in the first aspect, the lower structure has a fender disposed on the port side and starboard side of the bottom surface.

According to the lifeboat of the present invention described above, the shock absorbers are arranged along the outer periphery in the vicinity of the waterline of the lifeboat, so that the lifeboat drifts due to the tsunami and the pulling wave that rises, and obstacles such as buildings and rubble Even when the vehicle collides with an object, energy absorption at the time of the collision and reduction of the collision load can be achieved, and damage to the hull can be suppressed.

1 is a side view showing a lifeboat according to a first embodiment of the present invention. It is a top view which shows the lifeboat which concerns on 1st embodiment of this invention. It is a front view which shows the lifeboat which concerns on 1st embodiment of this invention. FIG. 2 is a perspective view showing a first example of the buffer body shown in FIGS. 1A to 1C. FIG. 2 is a perspective view showing a second example of the buffer body shown in FIGS. 1A to 1C. FIG. 3 is a perspective view showing a third example of the buffer body shown in FIGS. 1A to 1C. FIG. 8 is a perspective view showing a fourth example of the buffer body shown in FIGS. 1A to 1C. FIG. 10 is a perspective view showing a fifth example of the buffer body shown in FIGS. 1A to 1C. FIG. 10 is a perspective view showing a sixth example of the buffer body shown in FIGS. 1A to 1C. FIG. 2 is a cross-sectional view showing a first example of a mounting method of the shock absorber shown in FIGS. 1A to 1C. FIG. 7 is a cross-sectional view showing a second example of the mounting method of the shock absorber shown in FIGS. 1A to 1C. It is a top view which shows the lifeboat which concerns on 2nd embodiment of this invention. It is a top view which shows the lifeboat which concerns on 3rd embodiment of this invention. It is a top view which shows the lifeboat which concerns on 4th embodiment of this invention. It is a top view which shows the lifeboat which concerns on 5th embodiment of this invention. It is a perspective view of the bow part reinforcement body in the lifeboat which concerns on 5th embodiment of this invention. It is a perspective view which shows the 1st modification of the bow part reinforcement body in the lifeboat which concerns on 5th embodiment of this invention. It is a perspective view which shows the 2nd modification of the bow part reinforcement body in the lifeboat which concerns on 5th embodiment of this invention. It is a top view which shows the lifeboat which concerns on 6th embodiment of this invention. It is a side view which shows the lifeboat which concerns on 6th embodiment of this invention. It is a perspective view of the bow part reinforcement body in the lifeboat which concerns on 6th embodiment of this invention. It is a fragmentary sectional view which shows the lifeboat which concerns on 7th embodiment of this invention. It is a fragmentary sectional view which shows the lifeboat which concerns on 8th embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1A to 7B. 1A to 1C are views showing a lifeboat according to the first embodiment of the present invention. FIG. 1A is a side view, FIG. 1B is a plan view, and FIG. 1C is a front view.

As shown in FIGS. 1A to 1C, a lifeboat 1 according to a first embodiment of the present invention includes a lower structure 11 that forms a space for accommodating an occupant, and an upper structure that covers an upper portion of the lower structure 11. The shock absorber 2 is disposed on the outer periphery of the lower structure 11 and the upper structure 12 near the waterline L. Moreover, the lower structure 11 has the fender 3 arranged on the port side and starboard side of the bottom surface.

A lifeboat 1 shown in FIG. 1A to FIG. 1C is an improvement of a conventionally used lifeboat of a closed type (sealed type) for marine accidents of ships. The lower structure 11 floats on the water and has a substantially hull shape. Inside the lower structure 11, although not shown, a seat on which an occupant sits, a warehouse for storing food, beverages, and the like are arranged. Moreover, the lower structure 11 has the keel 11a arrange | positioned at the hull center, and may have the bilge keel in the bottom face of the port side and starboard side as needed. The upper structure 12 is a cover member that covers the upper part of the lower structure 11 so as to be sealed. The upper structure 12 is formed with an occupant entrance 12a, a lighting or monitoring window 12b, a ventilation duct 12c for ventilation, and the like. The shape and configuration of the upper structure 12 are not limited to those illustrated.

The fender 3 suppresses damage to the bottom of the ship when the lifeboat 1 behaves in an unstable manner such as repeatedly rising and landing at the beginning of the drift, landing on the drift, or landing after the wave It is a part to do. As shown in FIGS. 1A and 1C, the fenders 3 are arranged in two rows in the hull length direction on both sides of the keel 11a, for example. The fender 3 is made of hard rubber, for example, considering that the fender 3 is a part that contacts the ground when stranded and a part that supports the lifeboat 1 when water is drawn. Since the fender 3 needs to contact the ground prior to the keel 11a and the bilge keel, the fender 3 is disposed up to a position below these components. If necessary, the bilge keel may be omitted, or the fender 3 may have a bilge keel function.

The shock absorber 2 has a function of reducing impact generated on the hull and acceleration generated on the occupant when the lifeboat 1 collides with a building or rubble. For the buffer body 2, it is preferable to use a material having an elastic force and having little performance degradation due to water. Examples of the buffer 2 include foamed resin (polyurethane foam, polystyrene foam, polyethylene foam, polypropylene foam, EVA foam, PET foam, etc.), rubber, wood, honeycomb material, air spring, damper (spring type, oil type, etc.). Can be used. In particular, by using a foamed resin having a closed cell structure as the buffer body 2, water absorption can be suppressed, and fluctuations in buffer characteristics, weight, center of gravity, etc. due to water absorption can be suppressed. The performance can be effectively maintained. In addition, you may use a different raw material for the buffer body 2 according to the arrangement | positioning location of the lifeboat 1. FIG.

Moreover, the main functions of the buffer body 2 are energy absorption at the time of a collision and reduction of a collision load. However, from the viewpoints of ship directionality (property that is directed toward the bow downstream along the flow) and rider comfort, the lifeboat 1's swaying characteristics and stability during capsizing are hindered. Conditions such as the center of gravity, weight, and shape are set as appropriate so that there is no such problem. By adjusting the shape and arrangement of the buffer body 2 in this way, the stability of the lifeboat 1 can be secured, and the impact generated in the lifeboat 1 and the other party that has collided can be absorbed. In addition, it is possible to reduce the damage of the colliding opponent.

By the way, when the lifeboat 1 is swept away by a tsunami or a pulling wave that goes up, the tsunami or the pulling wave that goes up often has a complicated flow due to buildings existing on the ground. Therefore, the lifeboat 1 does not necessarily travel in the bow direction. That is, the lifeboat 1 may collide with obstacles (buildings, rubble, etc.) in all directions of the bow, stern, and ship rules. It arrange | positions so that the perimeter of the bow part of the boat 1, a stern part, and a ship rule part may be covered.

Moreover, the buffer body 2 is arrange | positioned in the vicinity of the waterline L of the lifeboat 1 as shown to FIG. 1A and FIG. 1C. Here, “in the vicinity of the draft line L” means within a certain range in the vertical direction including the draft line L, and the certain range is set in consideration of the swing characteristics of the lifeboat 1 when drifting. Thus, by arranging the buffer body 2 in the vicinity of the waterline L, the outermost portion can be protected in a state where the lifeboat 1 is levitated, and against obstacles such as rubble floating on the water surface. Effective. The buffer body 2 is not necessarily arranged in both the lower structure 11 and the upper structure 12. Depending on the structure of the lifeboat 1, the buffer body 2 may be arranged only in either the lower structure 11 or the upper structure 12, or the outer periphery of either the lower structure 11 or the upper structure 12. The buffer body 2 may be disposed on the entire periphery, and the buffer body 2 may be disposed only on a part of the other outer periphery (for example, a ship side portion).

2A to 2F are perspective views showing an example of the buffer shown in FIGS. 1A to 1C. FIG. 2A is a first example, FIG. 2B is a second example, and FIG. 2C is a third example. 2D shows a fourth example, FIG. 2E shows a fifth example, and FIG. 2F shows a sixth example. The buffer body 2 may be configured to continuously cover the entire circumference of the lifeboat 1, or may be divided into block bodies 21 as shown in FIGS. 2A to 2F and spread with a plurality of block bodies 21. The structure which can coat | cover all the circumferences by may be sufficient. In addition, when the buffer body 2 is divided | segmented into the some block body 21, you may connect adjacent block bodies 21 with an adhesive agent, a hook-and-loop fastener, a belt member, etc.

The first example of the buffer body 2 (block body 21) shown in FIG. 2A has a bag body 23 in which the block body 21 can accommodate the buffer material 22. For example, when the cushioning material 22 is made of a foamed resin, the bag body 23 has a function of suppressing the loss or collapse of the foamed resin. For example, the bag body 23 may be knitted with high-strength fibers, or may be formed of a rubber sheet or a vinyl sheet. The buffer material 22 accommodated in the bag body 23 may have the same outer shape as the buffer body 2 that is the block body 21, or a plurality of shapes having a predetermined shape (a rectangular parallelepiped, a cylinder, a sphere, etc.). It may have a small block shape. The roughness of the bag body 23 is arbitrarily set according to the material and shape of the buffer material 22 to be accommodated. In addition, when the buffer material 22 can hold | maintain a shape by itself and consists of a material which does not produce a defect | deletion etc., the bag body 23 can be abbreviate | omitted.

In the second example of the buffer body 2 (block body 21) shown in FIG. 2B, the net member 24 is arranged on the surface of the block body 21 shown in FIG. 2A. The net member 24 is constituted by a net-like sheet made of high strength fiber, for example. The net member 24 has a function of suppressing the deformation of the block body 21 and the breakage of the bag body 23 and is disposed so as to cover at least the front surface of the block body 21 (the surface excluding the contact surface with the lifeboat 1). The net member 24 may be formed in a bag shape that can accommodate the entire block body 21, or may have a sheet shape that can be locked to an attachment portion formed at an edge of the bag body 23.

In the third example of the buffer body 2 (block body 21) shown in FIG. 2C, the block body 21 shown in FIG. The belt member 25 has a function of suppressing the deformation of the block body 21 and is disposed so as to cover at least the front surface of the block body 21 (a surface excluding the contact surface with the lifeboat 1). For example, a plurality of belt members 25 are preferably arranged in the up-down direction and the left-right direction, but may be arranged only in the up-down direction or only in the left-right direction as needed, or depending on the shape of the block body 21 You may hang it. Further, the band member 25 may be tightened by being wound around the entire circumference of the block body 21, or may be engageable with an attachment portion formed at the edge of the bag body 23.

In the fourth example of the buffer body 2 (block body 21) shown in FIG. 2D, the block body 21 having the net member 24 shown in FIG. According to such a configuration, the deformation of the block body 21 can be further suppressed. The other configuration is the same as that of the block body 21 shown in FIG. 2C.

The fifth example of the buffer body 2 (block body 21) illustrated in FIG. 2E includes a regulating member 26 that suppresses deformation in the width direction of the bag body 23 in the block body 21 illustrated in FIG. 2C. In the drawing, the regulating member 26 is indicated by a one-dot chain line having black circles at both ends. The restricting member 26 is, for example, a string member (stitch) sewn to both end portions in the width direction of the bag body 23, and has a function of suppressing outward expansion of the bag body 23 by the tension of the string member. With such a configuration, the cushioning property of the block body 21 can be improved. The restricting member 26 is made of, for example, high strength fiber. For example, as shown in the figure, a plurality of regulating members 26 are arranged at appropriate intervals in the vertical direction so as to regulate the width in the left-right direction. Further, although not shown, a plurality of regulating members 26 may be arranged at appropriate intervals in the left-right direction so as to regulate the vertical width. The restricting member 26 may be connected to the band member 25 or may be disposed on the block body 21 shown in FIG. 2A.

The sixth example of the buffer body 2 (block body 21) illustrated in FIG. 2F includes a regulating member 26 that suppresses deformation in the width direction of the bag body 23 in the block body 21 illustrated in FIG. 2D. According to such a configuration, the outward expansion of the bag body 23 can be suppressed, and the cushioning property of the block body 21 can be improved. The regulating member 26 may be connected to the net member 24. Other configurations are the same as those of the block body 21 shown in FIG. 2E.

Next, a method for attaching the buffer body 2 to the lower structure 11 and the upper structure 12 will be described with reference to FIGS. 3A and 3B. Here, FIGS. 3A and 3B are cross-sectional views showing a mounting method of the shock absorber shown in FIGS. 1A to 1C. FIG. 3A shows a first example, and FIG. 3B shows a second example. The cross sections shown in FIGS. 3A and 3B are partial cross sections of the lower structure 11 and the upper structure 12 constituting the lifeboat 1.

In the mounting method of the shock absorber 2 shown in FIGS. 3A and 3B, the shock absorber 2 is fastened and fixed by the belt member 4 that is stretched over the locking members 6 arranged in the lower structure 11 and the upper structure 12. Moreover, before attaching the buffer body 2, you may connect to the lifeboat 1 the metal reinforcing material 5 which covers the perimeter of the joint 13 along the joint 13 with comparatively weak intensity | strength. In general, the joint 13 is configured by connecting a fastener 13 a such as a bolt and a nut to the overlapping portion of the lower structure 11 and the upper structure 12. Further, a rubber fender 13b is often disposed on the outer periphery of the joint 13.

The reinforcing material 5 is disposed so as to cover these fasteners 13a and fenders 13b. Specifically, the reinforcing member 5 is a component made of a metal material such as steel and having a substantially U-shaped cross section, and is bent at the tip so as to be in contact with the surface of the lifeboat 1. Contact surface. Further, the leg portions of the reinforcing member 5 are formed stepwise up and down, and the inner surface of the upper leg portion is formed in such a shape as to contact the stepped portion of the upper structure 12. The reinforcing member 5 is installed on the upper structure 12 with an adhesive, for example. However, depending on the case, the reinforcing member 5 may be installed with a fastener such as a rivet or a bolt. The reinforcing material 5 can be omitted as necessary.

In the first example of the mounting method of the shock absorber 2 shown in FIG. 3A, the shock absorber 2 includes a lower shock absorber 2a disposed in the lower structure 11, an upper shock absorber 2b disposed in the upper structure 12, have. A locking member 6 is disposed on the surfaces of the lower structure 11, the upper structure 12 and the reinforcing material 5. The locking member 6 includes, for example, a rod portion 61 that can hang the belt member 4 and at least a pair of support portions 62 that support the rod portion 61. The support part 62 is installed on the surface of the lower structure 11, the upper structure 12, and the reinforcing material 5 with an adhesive, for example, but may be installed with a fastener such as a rivet or a bolt depending on the case. You may install by welding. Moreover, you may form the whole rod part 61 and the support part 62 with one pipe material. The locking member 6 may be continuously disposed in a horizontal direction substantially parallel to the joint 13 or in a horizontal direction having a certain distance from the joint 13, or intermittently disposed according to the arrangement of the buffer body 2. It may be.

In the first example of the mounting method of the shock absorber 2 shown in FIG. 3A, the reinforcing member 5 is interposed between the locking member 6 connected to the lower structure 11 and the locking member 6 connected to the upper structure 12. It has the latching member 6 connected to. Therefore, the lower shock absorber 2 a is fastened and fixed by the lower belt member 4 a that is stretched over the locking member 6 disposed on the lower structure 11 and the reinforcing member 5. On the other hand, the upper shock absorber 2b is fastened and fixed by the upper belt member 4b that is stretched over the locking member 6 disposed on the upper structure 12 and the reinforcing member 5.

In this way, the buffer body 2 is divided into upper and lower parts to reduce the size and weight of the buffer body 2 (block body 21), and the buffer body 2 (block body 21) can be easily arranged along the joint 13. can do. The locking member 6 disposed on the reinforcing member 5 can be inserted through the belt member 4 (the lower belt member 4a and the upper belt member 4b) in order to reduce the gap between the lower buffer body 2a and the upper buffer body 2b. It may be formed of a plate member having a through hole.

In the second example of the mounting method of the shock absorber 2 shown in FIG. 3B, the shock absorber 2 has a shape in which the lower shock absorber 2a and the upper shock absorber 2b shown in FIG. 3A are integrally formed. Therefore, the shock absorber 2 is fixed to the lifeboat 1 from above the reinforcing member 5 connected to the joint 13. Specifically, the locking members 6 are disposed on the surfaces of the lower structure 11 and the upper structure 12, and the buffer member 2 is lowered by hanging the belt member 4 around these locking members 6. 11 and the upper structure 12 are fastened and fixed. The locking member 6 has the same configuration as that shown in FIG. 3A. Further, the reinforcing material 5 can be omitted as necessary. Such an attachment method is optimal, for example, when the lifeboat 1 is small or when the locking member 6 cannot be disposed at the joint 13.

Next, a lifeboat 1 according to another embodiment of the present invention will be described with reference to FIGS. 4A to 7B. 4A to 4C are plan views showing a lifeboat according to another embodiment of the present invention. FIG. 4A is a second embodiment, FIG. 4B is a third embodiment, and FIG. 4C is a fourth embodiment. Form. 5A to 5D are views showing a lifeboat according to a fifth embodiment of the present invention, in which FIG. 5A is a plan view, FIG. 5B is a perspective view of a bow reinforcement, and FIG. 5C is a view of a bow reinforcement. Fig. 5D shows a first modified example, a second modified example of the bow reinforcement, Fig. 6A to 6C are views showing a lifeboat according to the sixth embodiment of the present invention, Fig. 6B is a side view, Fig. 6C is a perspective view of the bow reinforcement, and Fig. 7A and Fig. 7B are partial sectional views showing a lifeboat according to another embodiment of the present invention. 7A shows a seventh embodiment, and Fig. 7B shows an eighth embodiment, where the dotted lines in Fig. 4A to Fig. 4C, Fig. 5A, Fig. 6A and Fig. 6B indicate that the buffer 2 is a plurality of blocks. The boundary surface in the case of dividing the body 21 is shown.

In the lifeboat 1 according to the second embodiment shown in FIG. 4A, the shock absorber 2 includes a bow shock absorber 2f disposed at the bow portion, a stern shock absorber 2r disposed at the stern portion, and a ship side portion. And the horizontal thicknesses Df and Dr of the bow buffer body 2f and the stern buffer body 2r are larger than the horizontal thickness Ds of the ship side buffer body 2s. Is done. The lifeboat 1 tends to move in the bow direction or the stern direction depending on the shape of the hull, even when it is swept away by a tsunami or pulling wave that goes up, and the speed tends to increase in that direction. It is in. Therefore, the lifeboat 1 is likely to come in contact with an obstacle such as a building or rubble from the bow or stern, and the impact is likely to increase.

Therefore, by forming the horizontal thickness Df of the bow buffer body 2f and the horizontal thickness Dr of the stern buffer body 2r larger than the horizontal thickness Ds of the ship side buffer body 2s, Energy absorption performance is improved. Further, the horizontal thickness Df of the bow buffer body 2f and the horizontal thickness Dr of the stern buffer body 2r are appropriately set according to the assumed tsunami size, water depth, and the like. The horizontal thickness Df> the horizontal thickness Dr of the stern cushion 2r ≧ the horizontal thickness Ds of the stern cushion 2s is set to have a relationship. The horizontal thickness Df of the bow cushion 2f> the horizontal thickness Dr of the stern cushion 2r is the directionality of the lifeboat 1 as a ship (with the bow directed downstream along the flow). This is because the property of being washed away is taken into consideration.

In the lifeboat 1 according to the third embodiment shown in FIG. 4B, the bow buffer body 2 f and the stern buffer body 2 r in the second embodiment are constituted by a plurality of block bodies 21. As described above, the bow shock absorber 2f and the stern shock absorber 2r are required to have high shock absorption performance, and therefore are preferably formed of a three-dimensionally integrated foamed resin or the like. However, as shown in the figure, the bow buffer body 2f and the stern buffer body 2r may be constituted by a plurality of block bodies 21. With such a configuration, it is possible to reduce the size and weight of each shock absorber 2 and facilitate the mounting operation. Further, by forming the boundary surface 21a of the block body 21 substantially radially, it is possible to easily absorb the impact from the front or rear.

In the lifeboat 1 according to the fourth embodiment shown in FIG. 4C, the bow buffer body 2f and the stern buffer body 2r in the third embodiment are divided into two rows. The bow buffer body 2f and the stern buffer body 2r are configured by an inner block body 21b connected to the lifeboat 1 and an outer block body 21c disposed on the surface of the inner block body 21b. Thus, by making the block body 21 into two rows of the inner block body 21b and the outer block body 21c, the block body 21 can be reduced in size, weight, and installation work can be facilitated. The outer block body 21c may be connected to the inner block body 21b, or may be connected to the lifeboat 1 across the inner block body 21b. The bow buffer 2f and the stern cushion 2r may be divided into three or more rows.

In the lifeboat 1 shown in the second embodiment to the fourth embodiment described above, the number of divisions of the block body 21 can be arbitrarily set. As the block body 21, the buffer body shown in FIGS. 2A to 2F is used. The examples can be appropriately selected and used. Moreover, you may divide | segment the block body 21 which comprises ship side part buffer body 2s into inner and outer two rows.

The lifeboat 1 according to the fifth embodiment shown in FIGS. 5A and 5B includes a bow reinforcement 7 connected to the reinforcement 5 and projecting forward of the bow, and the shock absorber 2 is connected to the bow reinforcement. 7 inside and outside. The shock absorbers 2 arranged inside and outside the bow reinforcement 7 correspond to the inner block body 21b and the outer block body 21c shown in the fourth embodiment. In FIG. 5A, the bow reinforcement 7 is buried in the shock absorber 2, and is shown by a one-dot chain line. Further, as shown in FIG. 5B, the bow reinforcement body 7 includes, for example, a load receiving portion 71 disposed in front of the bow portion and a connecting portion 72 connected to the reinforcing member 5. In addition, you may reinforce | strengthen the connection part of the load receiving part 71 and the connection part 72, such as a bracket and a diagonal.

The load receiving portion 71 may be a frame having a framework made of a metal material such as steel as shown in FIG. 5B, or a metal plate such as a steel plate as shown in the first modification of FIG. 5C. Or a face body formed of a synthetic resin plate such as a polycarbonate plate. The connecting portion 72 is connected to the reinforcing member 5 disposed on the ship side by a fastener such as a bolt or welding. The length of the connecting portion 72 is set to a length that can stably hold the load receiving portion 71.

With such a configuration, a collision load when an obstacle collides with the outer block body 21c can be received by the load receiving portion 71, and can be transmitted to the reinforcing member 5 via the connecting portion 72. Can be dispersed. Therefore, it is possible to prevent a collision load from acting locally on a part of the lifeboat 1 and to prevent the lifeboat 1 from being damaged. Further, by arranging the bow reinforcement 7, the load transmitted to the inner block body 21 b can be reduced, and the structure of the inner block body 21 b can be simplified and the life can be extended.

In the second modification of the fifth embodiment shown in FIG. 5D, the load receiving portion 71 is formed in a flat plate shape. As shown in FIGS. 5B and 5C, the load receiving portion 71 may be curved in accordance with the shape of the bow, or as shown in FIG. 5D, it may be formed by a flat plate developed in the width direction of the hull. May be. According to this second modification, when the bow collides with an obstacle such as a building or rubble, the shock absorber 2 (the outer block body 21c) is compressed in the collision direction so as not to protrude outside the lifeboat 1. It can be deformed and energy absorption performance can be improved.

A lifeboat 1 according to the sixth embodiment shown in FIGS. 6A to 6C has a bow reinforcement body 7 connected to the reinforcing member 5 and projecting forward of the bow section, and the shock absorber 2 is used as the bow reinforcement body. 7 is disposed outside. As shown in FIG. 6A, the reinforcing member 5 does not necessarily need to cover the entire periphery of the joint 13 between the lower structure 11 and the upper structure 12, and covers the outer periphery along the horizontal portion of the joint 13. May be arranged. Moreover, it is not necessary for all the reinforcing members 5 to be in close contact with the joints 13, and the reinforcing members 5 may be arranged so as to partially (for example, hull corners) and surround the outer periphery away from the joints 13.

The buffer body 2 in the sixth embodiment is divided into a plurality of block bodies 21 as shown in FIGS. 6A and 6B. Since the block body 21 arranged in front of the bow reinforcement 7 needs to absorb a larger impact than the other parts, for example, the block body 21 is preferably constituted by a bow block 21f having a substantially semi-cylindrical shape. .

As shown in FIG. 6C, the bow reinforcement body 7 includes a load receiving portion 71 disposed in front of the bow portion, a connecting portion 72 connected to the reinforcing member 5, a load receiving portion 71, and a connecting portion 72. And a diagonal member for reinforcement 73 disposed at the connecting portion. In addition, in FIG. 6B, the bow part reinforcement body 7 is illustrated with the continuous line for convenience of explanation (in fact, it is buried inside the buffer body 2).

The lifeboat 1 is predicted to move in many cases with its bow side forward in the traveling direction because of its hull shape, and there is a high possibility that it will collide with an obstacle such as a building or debris from the front of the lifeboat 1. Therefore, in the present embodiment, the load receiving portion 71 on the flat plate is disposed in front of the bow portion, and the shock absorber 2 (the bow block body 21f) is disposed outside the bow portion reinforcing body 7. Since the inside of the bow reinforcement 7 is structurally difficult to transmit an impact force, the arrangement of the shock absorber 2 can be omitted, and the work load during construction can be reduced.

Conditions such as a lateral width W, a height H, a plate thickness, and a material of the load receiving portion 71 are appropriately set in consideration of, for example, a balance between necessary absorption energy and allowable load. However, the lateral width W of the load receiving portion 71 is preferably smaller than the width of the lifeboat 1, and the height H of the load receiving portion 71 is preferably smaller than the height of the lower structure 11. Further, as shown in FIG. 6B, the height H of the load receiving portion 71 and the height of the shock absorber 2 (the bow block body 21f) may be matched, or the load receiving portion 71 may be It may be covered with a partial block body 21f).

The lifeboat 1 according to the seventh embodiment shown in FIG. 7A uses an air spring 27 as the shock absorber 2. The air spring 27 is arranged along the joint 13 in both or either of the lower structure 11 and the upper structure 12. The air spring 27 is preferably installed on the lower structure 11 and the upper structure 12 by an adhesive, but may be installed by a fastener such as a bolt in some cases. Even with such a configuration, damage to the hull can be suppressed even when the vehicle collides with an obstacle such as a building or rubble.

In the seventh embodiment, a spring damper or an oil damper may be used instead of the air spring 27, the reinforcing member 5 may be disposed at the joint 13, or the block body 21 made of foamed resin or the like. You may use together.

The lifeboat 1 according to the eighth embodiment shown in FIG. 7B uses a rubber damper 28 as the shock absorber 2. The rubber damper 28 is disposed along both the joint 13 and / or the lower structure 11 and the upper structure 12. The rubber damper 28 is preferably installed on the lower structure 11 and the upper structure 12 with an adhesive, but in some cases, the rubber damper 28 may be installed with a fastener such as a bolt. Even with such a configuration, damage to the hull can be suppressed even when the vehicle collides with an obstacle such as a building or rubble.

In the eighth embodiment, a honeycomb material or wood may be used instead of the rubber damper 28, the reinforcing material 5 may be disposed at the joint 13, and the block body 21 made of foamed resin or the like. You may use together.

By the way, in the mounting method of the shock absorber 2 shown in FIGS. 3A and 3B, the method of securing the block body 21 with the belt member 4 has been described. And you may fix to the upper structure 12 directly, and you may use these and the belt member 4 together. When the block body 21 is directly fixed, the block body 21 may be formed and then fixed to the lower structure 11 and the upper structure 12 with an adhesive or a hook-and-loop fastener. Alternatively, the bag body 23 that accommodates the cushioning material 22 may be fixed in advance to the lower structure 11 and the upper structure 12 with an adhesive or a hook-and-loop fastener, and the cushioning material 22 may be packed in the bag body 23 before closing the opening. .

The present invention is not limited to the above-described embodiments, and can be applied to lifeboats other than those used for evacuation against tsunamis (for example, lifeboats that are permanently installed in ships). Of course, various modifications are possible.

According to the present invention, it is possible to provide a lifeboat that can suppress damage to the hull even when drifting due to a tsunami or pulling wave that goes up.

DESCRIPTION OF SYMBOLS 1 Lifeboat 2 Buffer body 2a Lower buffer body 2b Upper buffer body 2f Bow part buffer body 2r Stern part buffer body 2s Ship side part buffer body 3 Shaft material 4 Belt member 4a Lower belt member 4b Upper belt member 5 Reinforcement material 6 Locking Member 7 Bow reinforcement 11 Lower structure 12 Upper structure 13 Joint 21 Block body 22 Buffer material 23 Bag body 26 Restriction member

Claims

In a sealed lifeboat composed of a lower structure that forms a space for accommodating a passenger and an upper structure that covers an upper portion of the lower structure, the lower structure or the upper structure near the water line A lifeboat with a shock absorber on the outer periphery.
The buffer includes a bow buffer disposed at the bow, a stern cushion disposed at the stern, and a ship buffer disposed at the ship side, and the bow buffer. Or the lifeboat of Claim 1 whose horizontal direction thickness of the said stern part buffer body is thicker than the horizontal direction thickness of the said ship side part buffer body.
The buffer is fixed directly to the lower structure or the upper structure, or is fastened and fixed by a belt member that is stretched over a locking member arranged in the lower structure or the upper structure. 3. A lifeboat according to claim 1 or claim 2.
The lifeboat according to claim 1, further comprising a metal reinforcing member that covers the joint along the joint between the lower structure and the upper structure.
The buffer includes a lower buffer disposed in the lower structure and an upper buffer disposed in the upper structure, and the lower buffer is disposed on the lower structure and the reinforcing material. The upper shock absorber is fastened and fixed by the lower belt member spanned on the disposed locking member, and the upper shock absorber is tightened by the upper belt member spanned on the upper structural body and the retaining member disposed on the reinforcing member. The lifeboat according to claim 4, which is fixed.
5. A bow portion reinforcement body connected to the reinforcement member and projecting forward of the bow portion, the buffer body being disposed outside or inside and outside the bow portion reinforcement body. Lifeboats.
The lifeboat according to claim 6, wherein the bow portion reinforcing body includes a load receiving portion disposed in front of the bow portion and a connecting portion connected to the reinforcing material.
The buffer body is divided into a plurality of block bodies, and these block bodies have a bag body that can accommodate the buffer material therein, and a regulating member that suppresses deformation in the width direction of the bag body. The lifeboat according to claim 1.
The lifeboat according to claim 1, wherein the lower structure includes a fender disposed on a port side and a starboard side of a bottom surface.