JP4352203B2 - Ukishima unit and vegetation Ukishima - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to vegetation floating islands, and by using waste tires in its main structure, it realizes a floating island structure that has sufficient elasticity and strength and can provide a favorable environment for the growth of aquatic plants, and contributes to product recycling Regarding vegetation floating islands that can be done.
[0002]
[Prior art and problems to be solved by the invention]
In recent years, many waterside designs have been planned to introduce biotopes and the like for the purpose of restoring the water environment and vegetation environment of lakes and rivers. Among them, various vegetation floating islands have been proposed in which an artificial floating island is floated near the shore and aquatic plants are allowed to flourish throughout the floating island. By setting up a vegetation floating island, it is expected to provide habitat space for small animals and various organisms, to improve the waterside around the floating island, and to purify the water quality by the biological action of water extraction plants such as reeds.
[0003]
Conventionally, as this kind of vegetation floating island, buoyancy body that stuffed granular soil material capable of activating part of roots of aquatic plants in the frame body of floating structure, or incorporated mat-like vegetation base material etc. The structure is known. If these vegetation floating islands are not constructed so as to occupy a relatively wide range of water surface away from the shore, the above effects cannot be obtained. For this reason, in many vegetation floating islands, a predetermined number of united vegetation floating islands are connected and used. For this reason, the ease of the connection operation | work of units is calculated | required.
[0004]
By the way, the frame main body as the main structure of the above-mentioned vegetation floating island is used by being floated for a long period of time in combination with a bar material or the like produced by foaming resin molding in order to have buoyancy. In addition, there is a problem in durability such as damage due to the influence of rocking caused by wind waves. On the other hand, in a structure in which a frame is constructed of steel, etc., and a buoyant body is added, there is a problem that the rigidity of the vegetation floating island that constitutes the unit is too high, and an excessive load is applied to the connecting part of each unit. These units are required to have flexibility and a certain degree of rigidity as a whole connected vegetation floating island.
[0005]
In addition, when it is assumed that a vegetation floating island is installed near a river, a dock, etc., there is a possibility that a ship may come into contact with the floating island or a driftwood may collide. For this reason, it is necessary to provide a certain level of impact resistance. In this case, it is preferable to have a cushion structure that can absorb the impact rather than a rigid structure that can withstand the impact. When devising a vegetation floating island having such structural characteristics, it is necessary to determine a member to be a main structure in each unit.
[0006]
In the present invention, when selecting a member that can realize this main structure, attention is paid to the recycling of waste tires. More than 100 million waste tires are generated annually, and a part with less damage is reused as a tire after undergoing a predetermined regeneration operation as a corrected tire. In addition, about half are used as a heat source and a part of cement raw material in the cement manufacturing process and the like. However, diversion to other uses is required from the viewpoint of reducing carbon dioxide generation. For this reason, various methods of recycling waste tires by mechanical treatment have been implemented. For example, waste tires are cut into tire chips, or crushed to use recycled rubber or rubber powder for various industrial products and materials. However, a processing step is required and the amount of material used in the market is not so large. In addition, there are uses as a slope retaining material, playground equipment, and fenders to use waste tires in their original form (product recycling), but the amount used is also small.
[0007]
Therefore, the object of the present invention is to solve the problems of the conventional technology described above, and to use a waste tire as a product recycled product as a main structural member of the unit of the vegetation floating island, and also to have a vegetation base configuration. To provide a floating island.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the present invention forms a foam buoyant body having a connecting portion at a predetermined position on the outer edge around a waste tire, and configures a bottom portion by closing one opening of the tire with a mesh material. The waste tire is filled with a vegetation base material.
[0009]
The above-mentioned floating island unit is connected in a predetermined plane shape, and a water extraction plant is planted on the vegetation base material, and is placed in the installation water area as a vegetation floating island.
[0010]
The foam buoyancy body is preferably formed by foam molding in a space between a side plate having a substantially rectangular shape with one side substantially equal to the diameter of the waste tire and the waste tire.
[0011]
It is preferable that the floating island units are connected to each other by a connecting pin provided penetrating from the inside of the waste tire to the outer edge of the foamed buoyancy body.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a vegetation floating island of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a perspective view schematically showing a part of a vegetation floating island formed by connecting a plurality of floating island units. FIG. 2A is a perspective view showing the floating island unit 2 (hereinafter referred to as the unit 2). Hereinafter, the configuration of the unit 2 will be described. As shown in FIGS. 3A and 3B, the unit 2 includes a waste tire 10 and a substantially square shape having a side length of one side slightly larger than the diameter of the waste tire 10. A side plate 11 made of resin, a foam buoyant body 12 filled and foamed between the side plate 11 and the waste tire 10, a bottom mesh 13 for closing the lower surface opening of the waste tire 10 in a horizontally placed state, and each unit 2, and a vegetation base material 15 is filled in the waste tire 10.
[0013]
The waste tire 10 used here is a tire that is used as a vehicle tire and is recycled for the purpose of using the original form (product recycling) among tires that are not suitable for riding due to wear of the tread pattern and discarded. Say. The waste tire 10 used in its original form has various sizes. By setting one side of the side plate 11 to accommodate the largest general passenger car tire (for example, about 70 cm), The waste tire 10 is preferably made recyclable. At this time, the tire width varies, but as shown in each drawing of FIG. 3, there is no problem even if the thickness of the unit 2 varies depending on the tire width.
[0014]
The side plate 11 serves as a mold frame for foam molding of the foam buoyant body 12 to be described later, and also functions as a guide and a shape retaining material for connecting the units 2 to each other when the unit 2 is assembled. Moreover, when the vegetation floating island 1 whole is completed, an outer periphery plays the role as a fender. In the present embodiment, the outer shape of the side plate 11 is a substantially square shape, and round chamfering is performed at the four corners with a large curvature. Thereby, it is not necessary to adjust the position shift at the corner when the vegetation floating island 1 is assembled, and the corner can be prevented from being chipped or deformed. As the material of the side plate 11, a synthetic resin such as polyester resin and polyethylene resin, a water-resistant and corrosion-resistant card board, a non-woven sheet retained by resin impregnation, and the like can be used.
[0015]
The side plate 11 and the waste tire 10 are preferably temporarily fixed with a connecting pin 14 as shown in FIG. When the diameter of the waste tire 10 is substantially equal to the inner method of the side plate 11 (FIG. 3B), the side plate 11 and the waste tire 10 can be directly connected by the connecting pin 14. When the diameter of the waste tire 10 is smaller than the inner method of the side plate 11, a sleeve (not shown) having a predetermined length is inserted into the connecting pin 14 to hold the waste tire 10 at a predetermined position in the side plate 11. preferable. A steel bolt is suitable as the connecting pin 14.
[0016]
As the foam buoyancy body 12, a foamed polystyrene resin foam-molded between the waste tire 10 and the side plate 11 is used. When the foamed buoyant body 12 is foamed into the mold, the resin adheres closely to the tread of the waste tire 10 and the inner surface of the side plate 11, so that a bottom plate is not required in terms of structure. In FIG. 3 (a), the thickness of the foam buoyancy body 12 is set equal to the tread of the waste tire 10, but it is possible to realize the inundation condition suitable for the draft as the vegetation floating island 1, that is, the growth environment of the aquatic plant to be planted. Thus, it is preferable to set the molding thickness of the side plate 11 and the buoyancy body 12 in consideration of the depth. FIG. 4 shows a modification in which a buoyant body 12 is also formed in the waste tire 10 to ensure buoyancy. In the case of a truck tire having a thick rubber wall, practical buoyancy may not be ensured only by providing the buoyancy body 12 around the waste tire 10. In such a case, as shown in the figure, it is also preferable to fill the waste tire 10 with foam and add the ring-shaped additional buoyancy body 16. When molding the foam buoyancy body 12, the periphery of the bottom mesh 13 (described later) can be integrally fixed to the inner surface portion of the bead 10a.
[0017]
On the other hand, a bottom mesh 13 is attached to the lower surface opening of the waste tire 10 in order to accommodate the vegetation base material 15 in the waste tire 10. In the present embodiment, a stretched lattice mesh made of polyethylene resin having an opening that does not allow the granular vegetation base material 15 to pass through is used as the bottom mesh 13. The periphery of the bottom mesh 13 is bonded to the inner surface of the bead 10 a of the waste tire 10. At this time, it is preferable to appropriately set the mesh material, the adhesive strength, and the like so that sufficient strength can be obtained even when the granular base material 15 is packed in the tire 10 and floated on the water surface. The mesh opening is preferably sufficiently rough so that the base material can be held in the tire and the roots of aquatic plants can pass sufficiently, and a mesh of about 1.0 to 3.0 mm is preferably used. Note that the mesh opening may be adjusted by overlapping a plurality of coarse meshes.
[0018]
A plurality of units 2 configured in this manner are connected using connecting pins 14 to construct a floating structure that serves as a base for the vegetation floating island 1 having a predetermined planar shape (see FIG. 1). A vegetation base material 15 is filled in each waste tire 10 portion of this floating structure to form a vegetation base part. As the vegetation base material 15, an artificial lightweight aggregate, a fired granular material, or the like is used. Furthermore, it is preferable to mix them with a predetermined proportion of chip-like organic base materials such as palm fiber and water. The extraction plant 21 is planted on the vegetation base 20 thus formed. As the extraction plant 21, it is preferable to select a native species that is rooted in the water area of the lake shore such as a lake where the vegetation floating island 1 is installed, but it is easy to live in the water below the vegetation base 20 of the vegetation floating island 1. In addition, the plant is preferably a plant in which leaf stems tend to grow on the water. For example, annual grasses are preferred, and reeds, makomo, cattails, etc. grow well. In addition, it has been confirmed that in the growth of such a water extraction plant, it contributes to water purification by the action of a decrease in nutrient salts in the water area and an increase in dissolved oxygen.
[0019]
5 and 7 are a partial cross-sectional view and an overall perspective view showing the vegetation floating island 1 after the vegetation floating island 1 is installed in a predetermined water area and a predetermined period has elapsed. As shown in FIG. 5, the vegetation floating island 1 is placed in an installation water area by an anchor cable 3. In the vegetation floating island 1 where the plant 20 has grown to some extent, the leaf stem 21a is sufficiently grown on the water, and the root 21b passes through the bottom mesh 13 of the vegetation base and extends sufficiently in water. In the section of the vegetation floating island 1 (part of FIG. 7B) after the installation, the plant 20 has flourished so as to completely cover the entire vegetation floating island 1, and the scenery is very close to the natural environment. Thus, in this vegetation floating island 1, the newly established vegetation floating island 1 part can be connected to the existing vegetation floating island 1 to easily add the entire vegetation floating island 1.
[0020]
FIG.2 (b) has shown the unit 2 manufactured using the side plate 11 which made the planar shape hexagonal as a modification. By connecting this unit 2, as shown in FIG. 6, in the vegetation floating island 1 according to this modified example, the buoyancy body 12 portion can be made smaller, and the vegetation floating island 1 in which the waste tire 10 portion is made closer can be constructed. Therefore, since plants can be densely planted from the beginning of the installation of the vegetation floating island 1 and the plants cover the entire vegetation floating island 1 in a relatively short period of time, it is possible to realize the vegetation floating island 1 close to the natural environment at an early stage. it can.
[0021]
【The invention's effect】
As described above, by using waste tires in the main structure of the vegetation floating island unit, it is possible to realize a floating island structure that has sufficient elasticity and strength and can provide a favorable environment for the growth of aquatic plants. This has the effect of being able to contribute to product recycling by utilizing the original form of waste tires.
[Brief description of the drawings]
FIG. 1 is a partial perspective view showing an embodiment of a vegetation floating island according to the present invention.
FIG. 2 is a perspective view showing an example of a floating island unit according to the present invention.
3 is a cross-sectional view showing the floating island unit shown in FIG. 2 along cross-sectional lines in two directions.
FIG. 4 is a sectional view of a floating island unit provided with an additional buoyancy body as a modification.
FIG. 5 is a partial cross-sectional view showing a state in which a plant has grown on a stationary vegetation floating island.
FIG. 6 is a partial perspective view of a vegetation floating island having a hexagonal side plate as a modification.
FIG. 7 is an overall perspective view showing a state in which a plant has grown on a stationary vegetation floating island.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Vegetation floating island 2 Ukishima unit 10 Waste tire 11 Side plate 12 Foam buoyancy body 13 Bottom mesh 14 Connection pin 15 Vegetation base material 20 Vegetation base part 21 Extraction plant

Claims (4)

A foam buoyant body having a connecting portion at a predetermined position on the outer edge is formed around the waste tire, and a vegetation base material is filled in the waste tire having a bottom portion formed by closing one opening of the tire with a mesh material. Floating island unit characterized by The vegetation floating island characterized by connecting the floating island unit of Claim 1 to predetermined plane shape, planting a water extraction plant in a vegetation base material, and setting it in an installation water area. 2. The floating island unit according to claim 1, wherein the foam buoyancy body is foam-molded in a space between a side plate having a substantially rectangular shape whose one side is substantially equal to the diameter of the waste tire and the waste tire. The vegetation floating island according to claim 2, wherein the floating island units are connected to each other by a connecting pin provided penetrating from the inside of the waste tire to the outer edge of the foam buoyancy body.

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