JPH10278875A - Floating platform and manufacturing method thereof - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a floating platform that can perform operations such as welding on the floating platform and is easy to assemble. A non-combustible layer is formed on the inner surface of a top wall of a floating platform body made of a hard material formed in a box shape with an opening at a lower portion, and is formed into a rectangular parallelepiped shape inside the floating platform body. Thermoplastic resin foam 3,
3... Are filled. Opening holes 7, 7 for venting air are formed in the side wall 2b of the floating platform body 2.
.. Are formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floating platform used for loading luggage or the like floating on a river or sea.

[0002]

2. Description of the Related Art Floating platforms can be used as floating islands for loading and storing luggage, etc., floating on rivers and seas, and can also be used as transport platforms if towed by ships. It is used.

[0003] Such a floating platform is conventionally made of a steel material, and its inside is hollow so as to float on a river or sea.

However, when the interior is hollow, there is a problem that a large floating platform is likely to be deformed, and sufficient strength cannot be obtained. Also,
In order to prevent rust, it is necessary to paint at a dock about once every two years, which increases running costs. In addition, there is a problem that water enters inside due to corrosion.

In order to solve such a problem, a barge described in, for example, Japanese Utility Model Publication No. 7-46630 has been proposed.

In this barge, an I-type styrofoam member is alternately shifted vertically in the cross-sectional width direction of the barge main body inside a hollow steel barge main body, and closely fitted in the left-right direction. The C-type styrofoam members are tightly fitted on the left and right ends and combined, and the T-type styrofoam members are tightly fitted on the upper and lower sides and combined, and each styrofoam member is connected to the side length direction and the plane length of the gantry body. The structure is such that the connection position is alternately shifted with respect to the height direction and the combination is filled.

[0007]

However, in the barge having such a structure, the uppermost layer of the styrofoam member filled in the main body of the barge directly contacts the inner surface of the top wall of the main body. There was a problem that work such as welding could not be performed on the barge.

Also, since the I-type styrofoam members are alternately shifted in the vertical direction and are closely fitted in the left-right direction and combined, there is a problem that the assembling work is complicated. In other words, since it is necessary to sequentially assemble the I-type styrofoam member in the left or right direction while shifting the I-type styrofoam member alternately in the vertical direction, during the actual assembling work, while holding the I-type styrofoam member in the middle of assembly with one hand, The other hand involves assembling a new I-type styrofoam member.

Further, since it is necessary to manufacture styrofoam members having various shapes such as an I-type styrofoam member and a C-type styrofoam member, there is a problem that the number of members increases.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a floating platform which can perform operations such as welding on the floating platform and can be easily assembled. .

[0011]

According to a first aspect of the present invention, there is provided a floating platform comprising: a floating platform body formed of a hard material having a box shape with an open lower portion; The floating platform body is filled with a plurality of thermoplastic resin foams formed in a predetermined shape.

A floating platform according to a second aspect of the present invention is the floating platform according to the first aspect, wherein the hard material is a steel material, and the predetermined shape is a rectangular parallelepiped shape.

According to a third aspect of the present invention, there is provided a floating platform according to the first or second aspect, wherein an opening for venting air is formed in a side wall of the floating platform body.

According to a fourth aspect of the present invention, there is provided the floating platform according to the first or second aspect, wherein through-holes are formed in opposing side walls of the floating platform body, and a linear shape is formed from one of the through-holes. The fixing material is inserted, and the plurality of thermoplastic resin foams are fixed to the floating platform body by penetrating the plurality of filled thermoplastic resin foams and inserting them out of the other through holes. Things.

According to a fifth aspect of the present invention, there is provided a method of manufacturing a floating platform, comprising forming a box-shaped floating platform body having an open top, forming an incombustible layer on an inner bottom surface of the floating platform. The floating platform is filled with a plurality of thermoplastic resin foams, and the thermoplastic resin foam is fixed in the floating platform body, and then the floating platform body is turned upside down.

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a central longitudinal sectional view showing the overall configuration of a floating platform according to the present invention, and FIG. 2 is a bottom view.

That is, the floating platform is made up of a plurality of thermoplastic resin foams 3 formed in a rectangular parallelepiped shape inside a steel floating platform body 2 formed in a box shape having an opening 1 in a lower part. 3... Are laid sideways and have a densely packed (laminated) structure.

Further, a non-combustible layer 5 is formed on the inner surface of the ceiling wall 2a of the floating platform body 2 having such a structure, and the side wall 2b of the floating platform body 2 has a certain horizontal space. Opening holes for air release
Are provided at a plurality of locations. The opening holes 7, 7,.
When a floating platform manufactured with the opening 1 of the floating platform body 2 facing upward is floated on a river or the sea and turned upside down (this operation will be described later), the floating platform remains inside the floating platform body 2 or It is a hole for letting out the invading air.

Describing with specific numerical values, the floating platform of the present embodiment has a rectangular parallelepiped shape having a length of 25 m, a width of 20 m, and a height of 3 m, and the opening holes 7, 7.
At a position about 5 cm below the upper edge of the sheet, they are formed at 5 m intervals in the width direction. The diameter of the opening hole 7 is 20 m.
m to 30 mm. In addition, the thermoplastic resin foam 3
It is 2 m long, 1 m wide, and 10 cm thick. However, these numerical values are examples, and the present invention is not limited to these numerical values.

The interior of the floating platform main body 2 is partitioned by steel partition plates 2c, 2c (in this embodiment, partitioned into four sections), and has a structure having rigidity as a whole. It has become.

The ceiling wall 2 of the floating platform body 2
Since the non-combustible layer 5 is provided on the inner surface a, even when welding or the like is performed on the floating platform, the heat is not transmitted to the lower thermoplastic resin foam 3.

As the non-combustible layer 5, for example, mortar or concrete is used. Examples of the thermoplastic resin used for the thermoplastic resin foam 3 include a polystyrene resin, a polyethylene resin, and a polypropylene resin. Among them, a polystyrene resin or a polymer of an olefin resin such as polyethylene is used as a core. A resin obtained by polymerizing styrene is excellent in moldability, strength, and the like.

The polystyrene-based foam is particularly excellent in waterproofness because the degree of fusion between the polystyrene-based resin foam beads is increased. If the surface of the foam is treated with a silicone-based waterproofing agent, the waterproof property is further increased, and the absorption of moisture by the foam can be prevented. Further, a hard thermoplastic resin foam may be disposed between the non-combustible layer 5 and the thermoplastic resin foam 3 for the purpose of dispersing a local load applied to the floating platform. As the hard thermoplastic resin foam, for example, an extruded polystyrene plate of 35 kg / m ³ is preferable.

In the above embodiment, the thermoplastic resin foams 3, 3,... To be laminated are shifted by half in the left-right direction for each layer, but it is not always necessary to shift. That is, each side may be aligned and simply stacked. This makes it easier to perform the laminating operation.

Next, a method of manufacturing the floating platform having the above configuration will be described with reference to FIGS.

Considering that the product is used floating on the river or the sea after the production, it is preferable to use a dog at each port.

First, a floating platform body 2 in the shape of a box with an open top is formed (see FIG. 3), and the interior of the floating platform body 2 is partitioned by partition plates 2c, 2c (see FIG. 4). That is, at this stage, the top wall 2a
The part is in a state as if it were a bottom wall. It is assumed that the opening holes 7, 7,... For venting air are formed in predetermined places on the side plate (plate serving as the side wall 2b) before assembling the floating platform body 2.

Thereafter, for example, mortar is poured into the inner bottom wall of the floating platform body 2 (that is, the inner surface of the ceiling wall 2a) to form the non-combustible layer 5 having a predetermined thickness. Next, the rectangular parallelepiped thermoplastic resin foams 3, 3... Are laid sideways inside the floating platform body 2 on which the non-combustible layer 5 is formed, and are flush with the openings 1. The layers are sequentially stacked until they become the same (see FIG. 5).

Next, the entire surface of the opening 1 of the floating platform body 2 is covered with a vinyl sheet 8, and the adjacent two edges of the thermoplastic resin foam 3 are pressed over the vinyl sheet 8. .. Are fixed, and both ends 9a, 9a of the long plates 9, 9,... Are fixed to the floating platform body 2 (see FIG. 6). The long plate 9 may be provided so as to press any one of the long side edges and the short side edges adjacent to the thermoplastic resin foams 3, 3,.... In FIG. 6, the thermoplastic resin foams 3, 3,... Are provided so as to press the long side edges. This makes it possible to prevent the thermoplastic resin foams 3, 3,... From falling off from the floating platform body 2 when the floating platform body 2 described later is inverted. The length of the long plate 9 is 70 mm in width and 3.2 in thickness.
mm and a length of 25 m (or 20 m). However, this dimension is an example, and is not limited to this.

Thereafter, the opening holes 7, 7,...
The floating platform body 2 is floated on water, drawn out into a river or the sea, and turned upside down (inside the dog if possible). Then, the plugs of the opening holes 7, 7,... For venting air are removed.

At this time, hooks 10 and 10 are integrally formed on the adjacent corner edges 2d and 2d of the floating platform body 2, and a wire 11 is hung on the hooks 10 and lifted by a crane 12. (See FIG. 7).

Air remains (or enters) inside the inverted floating platform body 2 at the time of the inversion, and this residual air is released from the air vent opening provided in the side wall 2 b of the floating platform body 2. Since it is released to the outside through the holes 7, 7,...
The close contact with the top wall 2a of the floating platform main body 2 (more precisely, the close contact with the non-combustible layer 5) allows the floating platform main body 2 to be provided with buoyancy in a stable state.

In the above embodiment, when the floating platform body 2 is turned over, the thermoplastic resin foams 3, 3.
In order to prevent the falling off, a vinyl sheet 8 is placed over the opening 1 of the floating platform body 2, and the long plates 9, 9,.
.. at both ends 9 of each long plate 9, 9...
Although a and 9a are configured to be fixed to the floating platform body 2 (see FIG. 6), the vinyl sheet 8 may be omitted. Also, as shown in FIG. 8, the air vent holes 7, 7,... Are used as, for example, bolt through holes, and the long strip bolts are inserted through the through holes 7, 7,. .. Are inserted through the filled thermoplastic resin foams 3, 3... Through the through holes 7, 7. May be fixed to the floating platform body 2 by tightening.

In this case, the thermoplastic resin foam 3, 3,...
The dimensions of (3) are 3 m in length, 1 m in width, and 10 cm in thickness, and are filled in the floating platform body 2 so as to be arranged in the vertical direction. Thus, one bolt 15 can penetrate all of the thermoplastic resin foams 3, 3,... Arranged in a line.

If the thermoplastic resin foams 3, 3,... Are fixed to the floating platform body 2 by the bolts 15 and the nuts 16 as described above, the vinyl sheet 8 and the long plate 9 become unnecessary. .

In place of the bolt 15 and the nut 16, a wire such as a piano wire is used to penetrate the thermoplastic resin foams 3, 3,... And both ends are fixed to the through holes 7, 7, respectively. You may do so.

[0038]

According to the floating platform of the present invention, a non-combustible layer is formed on the inner surface of the top wall of the floating platform body made of a steel material having a box shape with an open lower part. The inside is filled with a plurality of thermoplastic resin foams formed in a rectangular parallelepiped shape. That is, since heat conduction to the thermoplastic resin foam can be blocked by the non-combustible layer, work such as welding can be performed on the floating platform. Further, since it is only necessary to sequentially fill the inside of the floating platform body with the thermoplastic resin foam having a predetermined shape, it is not necessary to combine the thermoplastic resin foams in a complicated manner, so that the assembling work can be easily performed. Further, one kind of thermoplastic resin foam may be used, and it is not necessary to manufacture various shapes, so that the number of members can be reduced.

In the floating platform according to the third aspect of the present invention, since the opening hole for air release is formed in the side wall of the floating platform body, air remaining inside the floating platform when floating is floated is used for the air release. Can be released to the outside through the opening hole of For this reason, the thermoplastic resin foam filled therein can be in close contact with the ceiling wall of the floating platform body, and can provide buoyancy to the floating platform in a stable state.

In the floating platform according to a fourth aspect of the present invention, a through-hole is formed in the opposite side walls of the floating platform body, and a linear fixing material is inserted from one of the through-holes to be filled. Since the plurality of thermoplastic resin foams are configured to be fixed to the floating platform body by penetrating through the other thermoplastic resin foam and being inserted through the other through hole, when the floating platform is inverted, The thermoplastic resin foam does not fall out of the opening of the floating platform body.

According to a fifth aspect of the present invention, there is provided a method for manufacturing a floating platform, comprising forming a box-shaped floating platform body having an open top, forming a non-combustible layer on an inner bottom surface of the floating platform, The floating platform is filled with a plurality of thermoplastic resin foams, and the thermoplastic resin foam is fixed in the floating platform body, and then the floating platform body is turned upside down. Easy to do. Further, since the thermoplastic resin foam is fixed in the floating platform main body, the thermoplastic resin foam does not fall off the floating platform main body upon inversion.

[Brief description of the drawings]

FIG. 1 is a central longitudinal sectional view showing the entire configuration of a floating platform according to the present invention.

FIG. 2 is a bottom view of the floating platform of the present invention.

FIG. 3 is a perspective view showing a manufacturing procedure of the floating platform of the present invention.

FIG. 4 is a perspective view showing a manufacturing procedure of the floating platform of the present invention.

FIG. 5 is a perspective view showing a manufacturing procedure of the floating platform of the present invention.

FIG. 6 is a perspective view showing a manufacturing procedure of the floating platform of the present invention.

FIG. 7 is a perspective view showing a manufacturing procedure of the floating platform of the present invention.

FIG. 8 is a partially broken perspective view showing another embodiment for fixing a thermoplastic resin foam to a floating platform body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Opening part 2 Floating platform main body 3 Thermoplastic resin foam 5 Non-combustible layer 7 Opening hole (through hole) 8 Vinyl sheet 9 Long plate 15 Bolt (linear fixing material) 16 Nut

Claims (5)

[Claims] A non-combustible layer is formed on an inner surface of a ceiling wall of a floating platform body made of a hard material formed in a box shape with an open lower part, and a thermoplastic resin formed in a predetermined shape inside the floating platform body. A floating platform characterized by being filled with a plurality of foams. 2. The floating platform according to claim 1, wherein said hard material is a steel material, and said predetermined shape is a rectangular parallelepiped shape. 3. The floating platform according to claim 1, wherein an opening for venting air is formed in a side wall of the floating platform body. 4. A through hole is formed in the opposite side walls of the floating platform body, and a linear fixing material is inserted from one of the through holes to penetrate the plurality of filled thermoplastic resin foams. The floating platform according to claim 1 or 2, wherein the plurality of thermoplastic resin foams are fixed to the floating platform body by being inserted through the other through hole. 5. A floating platform body in the shape of a box with an open top, a non-combustible layer formed on the inner bottom surface of the floating platform, and a plurality of thermoplastic resin foams are filled in the floating platform. A method of manufacturing a floating platform, comprising: fixing the floating resin body in the floating platform body, and then turning the floating platform body upside down.