Patent Application
20160332704
The present disclosure relates to a prefabricated pontoon, and more particularly, to a prefabricated pontoon, which enables various offshore structures, such as ship mooring aprons or berthing facilities of boats or yachts, or floating bridges that float on the sea surface so as to serve as bridges, to be simply installed in a prefabricated manner.
In general, prefabricated pontoons have been used as various offshore structures including ship mooring aprons or berthing facilities of boats or yachts or floating bridges that float on the sea surface so as to serve as bridges, and development of such prefabricated pontoons is of great concern due to spread expansion of water sports and necessity of offshore structures for various purposes.
Such prefabricated pontoons have advantages that they can dissolve structural vulnerability of a berthing facility in the related art which is made of wood for berthing of boats or yachts, difficulty of approach to the berthing facility that has a concrete structure due to the level change of the sea surface, and the increase of efforts and costs for installing the berthing facility.
As a prefabricated pontoon in the related art, Korean Registered Patent No. 10-1060086 discloses “Prefabricated pontoon mounted with deck”.
According to the prefabricated pontoon in the related art, a mounting groove is recessively formed on an upper surface of a hollow-shaped main body having an airtight space portion formed therein, and a deck is put on the mounting groove. On the upper surface of the main body on which the deck is put, a fastening member, which has a bar shape and is formed to extend in a body with a flange along the outer circumference thereof, is insert-blow-molded, and bolts that penetrate the deck are fastened to the fastening member.
A border portion is formed to project from the circumferential surface of the upper surface of the main body, and at least one drain-outlet is penetratingly formed on the border portion. Further, a step portion that supports the deck is formed to project from the periphery of an insertion portion, into which the fastening member is inserted, on the upper surface of the main body, and a drain path is formed between the deck and the mounting groove.
However, the prefabricated pontoons in the related art have a stable coupling structure with respect to a lamination in upward/downward direction, but their lateral coupling structure is almost of a point contact type through hook portions, which may be unwantedly separated by external water pressure or load. Further, since the pontoons having the above-described coupling structure perform rotational motion around coupling portions through the hook portions due to the external load, an upper surface that is provided by the pontoons becomes uneven to form the unstable upper surface.
Accordingly, the present disclosure has been made to solve the aforementioned problems occurring in the prior art, and it is an object of the present disclosure to provide a prefabricated pontoon, of which a plurality of main bodies are mutually coupled to keep surface contact with one another through connectors to secure endurance enough to endure external water pressure or load and to facilitate coupling and separation of the plurality of main bodies.
To achieve the above and other objects, according to one aspect of the present disclosure, there is provided a prefabricated pontoon, which includes a plurality of main bodies, each including an upper main body and a lower main body that come in surface contact with each other and having a plurality of coupling grooves formed thereon at predetermined intervals along border surfaces thereof; a plurality of joint bars configured to be inserted into the upper main body and the lower main body during forming of the upper main body and the lower main body, with a part thereof being positioned and thus exposed in the plurality of coupling grooves to correspond to the plurality of coupling grooves; a plurality of pairs of fastening members configured to be inserted into a plurality of through-holes symmetrically formed in predetermined positions of the upper main body and the lower main body to be fastened to one another; and a plurality of connectors configured to connect the plurality of main bodies to one another and each having one end that is inserted into any one of the plurality of coupling grooves formed on one of the plurality of main bodies and the other end that is inserted into any one of the plurality of coupling grooves formed on another of the plurality of main bodies.
The pair of fastening members may include first and second fasteners, each of which has a flange portion and a fastening portion formed to project from the flange portion, wherein a male screw portion is formed on an outer periphery of one of the fastening portions and a female screw portion is formed on an inner periphery of the other of the fastening portions.
A hook portion may be formed to project from any one of the pair of flange portions in an opposite direction to the fastening portions.
At least one insertion groove may be formed on an upper surface of the lower main body, and at least one insertion projection that is inserted into the insertion groove may be formed on a lower surface of the upper main body.
Each of the plurality of joint bars may include a body on which at least one fixing rib is formed to project to be symmetrical with an upper surface and a lower surface thereof in a predetermined position in a length direction thereof, a first coupling portion coupled to one end of the body and having a coupling groove formed thereon, and a second coupling portion coupled to the other end of the body and having a coupling projection formed thereon.
The first coupling portion and the second coupling portion may be coupled to the body with different heights.
Core materials for strength reinforcement may be provided in the plurality of connectors.
According to the prefabricated pontoon according to an embodiment of the present disclosure, since the plurality of main bodies are mutually coupled to keep surface contact with one another through the connectors, it becomes possible to secure endurance enough to endure the external water pressure or load and to facilitate coupling and separation of the plurality of main bodies.
Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In describing the present disclosure, the thickness of lines or the size of constituent elements illustrated in the drawings may be exaggerated for clarity and convenience in explanation.
Further, all terms used in the description are terms that are defined in consideration of their functions in the present disclosure, and may differ depending on intentions of a user or an operator or customs. Accordingly, they should be defined on the basis of the contents of the whole description of the present disclosure.
Referring to
Each of the plurality of main bodies 110 includes an upper main body 112 and a lower main body 114 that come in surface contact with each other and has a plurality of coupling grooves 112a and 114a formed thereon at predetermined intervals along border surfaces thereof.
The upper main body 112 and the lower main body 113 are made of expanded polypropylene (EPP) that is a light-weight material having buoyancy on the surface of water.
At least one insertion groove 118 is formed on an upper surface of the lower main body 114, and at least one insertion projection 116 that is inserted into the insertion groove 118 is formed on a lower surface of the upper main body 112. The insertion groove 118 and the insertion projection 116 are accurately coupled to one another when the upper main body 112 and the lower main body 114 are mutually coupled to each other.
The plurality of joint bars 120, which are made of a long fiber thermoplastic (LFT) material, are insert-molded into the upper main body 112 and the lower main body 114 during forming of the upper main body 112 and the lower main body 114, and have outer surfaces partially positioned in the plurality of coupling grooves 112a and 114a to correspond to the plurality of coupling grooves 112a and 114a.
Each of the plurality of joint bars 120 includes a body 122 on which at least one fixing rib 122a is formed to project to be symmetrical with an upper surface and a lower surface thereof in a predetermined position in a length direction thereof, a first coupling portion 124 coupled to one end of the body 122 and having a coupling groove 124a formed thereon, and a second coupling portion 126 coupled to the other end of the body 122 and having a coupling projection 126a that is formed thereon.
Here, the fixing rib 122a is firmly coupled when the plurality of joint bars 120 are insert-molded into the upper main body 112 and the lower main body 114.
Further, the first coupling portion 124 and the second coupling portion 126 are coupled to the body 122 with different heights, and thus when the plurality of joint bars 120 are mutually coupled and inserted into the upper main body 112 and the lower main body 114, the first coupling portion 124 and the second coupling portion 126 have the same height.
The pairs of fastening members 130 are to fix the upper main body 112 and the lower main body 114, which come in surface contact with each other, to each other, and are inserted into a plurality of through-holes 117 symmetrically formed in predetermined positions of the upper main body 112 and the lower main body 114 to be fastened to each other.
Each of the pairs of fastening members 130 includes a pair of flange portions 132 and 132′ and first and second fasteners 134 and 134′ having fastening portions 134a and 134a′ formed to project from the pair of flange portions 132.
A male screw portion is formed on an outer periphery of one of the fastening portions 134a and 134a′ formed to project from the pair of flange portions 132 and 132′ and a female screw portion is formed on an inner periphery of the other of the fastening portions 134a and 134a′, so that the first and second fasteners 134 and 134′ are mutually coupled to each other.
Further, a hook portion 136 is formed to project from any one of the pair of flange portions 132 and 132′ in an opposite direction to the fastening portions 134a and 134a′, and a rope or the like is coupled to the hook portion 136.
The plurality of connectors 140 are to connect the plurality of main bodies 110 to one another, and each of the plurality of connectors 140 has one end that is inserted into any one of the plurality of coupling grooves 112a and 114a formed on one of the plurality of main bodies 110 and the other end that is inserted into any one of the plurality of coupling grooves 112a and 114a formed on another of the plurality of main bodies 110.
Here, it is preferable that the plurality of connectors 140 are made of a rubber material. The plurality of connectors 140 absorb an impact when an external force, such as a wave, is applied to coupling portions of the plurality of main bodies 110 that are mutually coupled by the plurality of connectors 140.
Each of the plurality of connectors 140 as described above includes a connection portion 142 and insertion portions 144 formed at both ends of the connectors 142 to be inserted into the plurality of coupling grooves 112a and 114a.
Cut portions 144a are formed on lower surfaces of the insertion portions 144 in a height direction thereof. When, the insertion portions 144 are inserted into the coupling grooves 112a and 114a, the cut portions 144a are inserted into the body 122 of the joint bar 120 that is positioned inside the coupling grooves 112a and 114a.
Further, core materials 146 for strength reinforcement are provided in the plurality of connectors 149.
According to the prefabricated pontoon according to an embodiment of the present disclosure, the plurality of main bodies 110 are mutually coupled to one another through insertion of the plurality of connectors 140 into the plurality of coupling grooves 112a and 114a formed on the border surfaces of the upper main body 112 and the lower main body 114 to enable a user to install the offshore structure for the purpose intended by the user. In this case, since the cut portions 144a formed on the lower surfaces of the insertion portions 144 of the plurality of connectors 140, which are inserted into the plurality of coupling grooves 112a and 114a, are inserted into the bodies 122 of the joint bars 120, the coupling of the plurality of main bodies 110 becomes firmer.
As described above, according to the prefabricated pontoon according to an embodiment of the present disclosure, since the plurality of main bodies are mutually coupled to keep surface contact with one another through the connectors, it becomes possible to secure endurance enough to endure the external water pressure or load and to facilitate coupling and separation of the plurality of main bodies.
Although the present disclosure has been described with reference to the embodiments in the attached figures, it is noted that equivalents may be employed and substitutions made herein without departing from the scope of the present disclosure as recited in the claims.
The present disclosure provides a prefabricated pontoon, and can be used in a prefabricated pontoon that enables various offshore structures, such as ship mooring aprons or berthing facilities of boats or yachts, or floating bridges that float on the sea surface so as to serve as bridges, to be simply installed and used in a prefabricated manner.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10-2014-0014824 | Feb 2014 | KR | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/KR2014/011406 | 11/26/2014 | WO | 00 |
