JP2012246634A - Fence for recovering floating matter on ocean - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fence for recovering floating matter on the ocean, which recovers the floating matter such as refuse and driftwood drifting on the ocean, while floating on the ocean.SOLUTION: Buoyancy bodies are disposed at predetermined intervals midway along a vertical portion of a capture material 1. Furthermore, support materials 5 made of a rigid body are longitudinally attached at predetermined intervals, and resistors 6 using a net-like body having a lower part fitted with a bowed material 7 using a long material bendable in a curved shape are connected at predetermined intervals to the capture material 1 by a rope-like suspension material 10 to be integrated.

Description

  The present invention relates to a collection fence that collects floating objects such as garbage and driftwood drifting on the ocean while floating on the ocean.

  The actual situation is that floating objects such as garbage and driftwood drifting on the ocean are scattered and scattered on the coast, and are partially collected or left as they are.

  In the case of an oil leak or the like, diffusion of leaked oil is prevented by installing an oil fence around or near the oil leak location (see, for example, Patent Document 1).

  Further, in order to prevent the pollution of the ocean due to the outflow of earth and sand such as landfill construction, there is a technique of arranging a partition material for preventing the outflow of earth and sand in the landfill sea area along the coast (for example, see Patent Document 2).

JP 10-325134 A JP 2009-114819 A

  However, in the prior art described above, the actual situation is that floating substances such as garbage drifting in the vast ocean are scattered on the coast or left unattended. In addition, soil spills and tanker oil spills that occur during land reclamation work on the coast are handled by mooring and fixing silt fences and oil fences locally. Installation of sinkers and anchors is difficult, and a large one requires a crane ship, so that installation work is difficult, and there is also a problem in strength.

  An object of the present invention is to solve such a problem.

  Therefore, in the present invention, buoyancy bodies are arranged at predetermined intervals in the middle in the vertical direction of the trapping material by the mesh body, and further, a support member made of a rigid body is attached at predetermined intervals in the vertical direction and bent in a curved shape. A resistor having a net-like body having a bow member made of a long material that can be attached to the lower part is connected to the capturing material at a predetermined interval by a rope-like suspension material, and is integrated.

  In this way, the present invention drifts while collecting floating substances that are drifting by blowing air in a band-like mass with a trapping material, and towed them to the collection base together with the floating substance collection fence as appropriate. The effect that it can collect | recover is acquired.

Front view showing an example Side view Cross-sectional explanatory drawing showing an example of bow material Graph showing the deformation stress of bow material Explanatory drawing of an example of the connection state of the suspension material and bowing material Illustration of support buoy Plane explanatory drawing on the sea of the floating material collection fence Explanatory drawing of floating substance collection fence in the sea Illustration of collection status

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

  In the figure, reference numeral 1 denotes a trapping material using a net-like body, which can be constructed by knitting a fiber material into a net-like shape, and for example, a fish net or the like can be used. The mesh size is arbitrary, but smaller than the suspended matter. In this embodiment, the size of the capturing material 1 is 50 m wide and 1 m high.

  The capturing material 1 is provided with a window 2 at a predetermined interval in the middle in the vertical direction, and a buoyant body 3 is disposed in the window 2 and attached to the capturing material 1 with a tensile material 4 such as a rope. This tensile strength material 4 may be left over the entire length of the capture material 1 in the width direction. Note that this window is not necessarily required, and may be omitted. In this case, the buoyancy body is attached to the side surface of the capturing material.

  Support material 5 is further attached to capture material 1 at a predetermined interval in the vertical direction. This support member 5 is a pipe or rod made of a rigid body made of synthetic resin, metal, or the like, and a lower part is heavier than the upper part by attaching or embedding a weight 5A to the lower part. The support 5 prevents the capture body 1 from being greatly bent or refracted in the vertical direction by the sea (water) part 1A and the sea (underwater) part 1B that are levitated by the buoyancy body 3 over the entire width. The length of the support material 5 does not necessarily have to be the entire length in the longitudinal direction of the capturing material 1, but the upper end is the same as or higher than the upper end of the capturing material 1, so Make sure that the upper part of the sea is not lowered or bent. The mounting interval of the support member 5 is about 3 m in this embodiment.

  Further, the mesh of the trapping material does not need to be uniform over the entire surface. If necessary, the trapping material is made larger from the center toward the left and right sides to improve the flow of water on both sides from the vicinity of the center (to reduce resistance). You may do it. Thereby, when arrange | positioning on the sea so that it may mention later, a trapping material can be made easy to form in a curved shape.

  The height of the sea top of the capture material 1 is the height of the sea top where the trapped suspended matter does not jump out. Since the capture material 1 generates a large roll motion due to the influence of wind waves, a structure in which the buoyancy body 3 and the capture material 1 are not directly connected is preferable in order to reduce the influence on the buoyancy body 3.

  Reference numeral 6 denotes a resistor, which can also be formed by knitting a fiber material into a net shape, and a fish net or the like can also be used therefor. The mesh of the resistor 6 is preferably equal to or larger than that of the capturing material 1. The width of the resistor 6 is the same as that of the capturing material 1, and the height varies depending on the size of the mesh, but may be lower than that of the capturing material 1.

  The mesh of the resistor does not need to be uniform over the entire surface. If necessary, the resistor is made larger than the center toward the left and right sides, and the water on both sides from the center is improved (resistance is reduced). You may do it. Thereby, when arrange | positioning in the sea so that it may mention later, a resistor can be made easy to form in a curved shape.

  A bow member 7 is attached to the lower portion of the resistor 6. The bow material 7 is a long material that is bent but not refracted when force is applied like a bow. For example, as shown in FIG. 3, the rings constituting the metal chain 9 are separated from each other in an elastic body 8 such as rubber or synthetic resin, and the chain 9 is interposed so that the elastic body 8 is interposed therebetween. It is a long material made of an embedded composite material. In addition to such a structure, the long material is bent in a curved shape like a long material made of a composite material in which a coil, a metal wire or a pipe is embedded in an elastic material such as rubber or synthetic resin. Any material can be used as long as it can be removed and is durable to seawater.

  By attaching the bow material 7 to the resistor 6 in this manner, the resistor 6 can be bent in the width direction and is not refracted or bent.

  The resistor 6 made in this way is connected to the capturing material 1 by a suspension material 10. The suspension member 10 may generally be a flexible rope made of a fiber material used for a fish net. The length varies depending on the sea area to be used, but is generally about 5 to 10 m, but it may be longer. The weight of the bow material 7 is such that the resistor 6 suspended from the capturing material 1 can be stably suspended in the sea.

  The upper end of the suspension member 10 is attached to the lower part of the support member 5 attached to the capture member 1, and the lower end is connected to the resistor 6. As shown in FIG. 5, the bow member 1 attached to the resistor 6 is attached to the bowing member 1. Shall be connected. Thereby, the capturing material 1 and the resistor 6 have an integral structure.

  Reference numeral 11 denotes support buoys attached to both ends of the capturing material 1. As shown in FIG. 6, a suspended weight 13 is suspended from a buoyant body 12 constituting the support buoy 11 by a suspended rope 14. The buoyancy body 12 is preferably provided with a connection ring 15 to the capture material 1 and a tow rope connection ring 16 at the time of recovery. Further, although not shown, a transmission device or a sign device for transmitting position information during drifting movement It is good to attach.

  Moreover, you may attach a parachute anchor and a windsock to the both sides of the capture | acquisition material 1 as needed.

  The marine suspended matter recovery fence is configured as described above.

  The operation of the above configuration will be described.

  In general, it is known that the moving speed of drifting objects floating on the sea is affected by the surface wind rather than the tidal current, and moves over the sea at a speed (blowing) of about 3% of the speed of the surface wind. In addition, the speed of tidal currents at a depth that is not affected by ocean winds is slower than that of blowing air, and the direction of the current depends on tidal activity.

  Therefore, when the marine suspended matter collection fence is arranged near the tide offshore, the upper sea part 1A of the upper part of the trapping material 1 protrudes on the sea surface by the buoyancy body 3, and the whole is curved so as to be substantially orthogonal to the tide. Stable in the spread state.

  The resistor 6 in the sea forms a curved shape by the bow material 7 and can maintain the shape. Moreover, the capture | acquisition material 1 can maintain a curved state with the resistance of blowing air and seawater.

  As shown in FIG. 7, this curved state is expanded by providing a difference in drift velocity between the center and both sides by increasing the resistance to flow on both sides of the suspended matter collecting fence by the support buoys 11 on both sides. It can be formed in a curved shape. As described above, the curved shape can also be formed by changing the size of the mesh of the capturing material or the resistor between the middle part and the side part.

  Moreover, in order to adjust the drifting speed, a parachute anchor or a windsock may be attached as described above.

  Therefore, the sea surface capturing material 1 moves under the influence of blowing air, and the underwater resistor 6 moves slower than that due to the tidal current. The difference between the flow rates of the trapping material 1 and the resistor 6 becomes a resistance force, and the moving speed of the suspended matter collecting fence drifts at a speed slower than the blowing speed (FIG. 8). The capture body 1 and the resistor 6 are connected to each other by the suspension member 10 so that the capture member 1 and the resistor 6 are separated from each other without being continuous. Further, it becomes more certain that the moving speed of the recovery fence is made slower than the speed of blowing air.

  As a result, the suspended matter recovery fence can wait for the drifting material flowing by the blowing air, and the floating material drifting by the blowing air in the form of a band is sequentially captured by the capturing material 1. It will be. The suspended matter drifts together with the capturing material 1 in a state where the suspended material is collectively captured by the curved capturing material 1.

  The drifting object captured in this manner can be appropriately towed to the recovery base together with the suspended matter recovery fence and recovered at sea.

  By collecting floating matters on the sea as described above, it is possible to collect litter and other debris that have been scattered in a wide area on the coast and difficult to collect at one place. Become.

  In addition, although said description was demonstrated as a fence for collection | recovery of floating substances, such as garbage, it can also be used as an oil fence of the oil leaked on the sea by changing a capture material from a mesh body to the existing impermeable fence. It can be used similarly.

DESCRIPTION OF SYMBOLS 1 Capturing material 1A Sea part 1B Underwater part 2 Window 3 Buoyant body 4 Tensile material 5 Support material 5A Weight 6 Resistor 7 Bow tension material 8 Elastic body 9 Chain 10 Suspended material 11 Support buoy 12 Buoyant body 13 Suspended weight 14 Drooping Rope 15 connecting ring 16 tow rope connecting ring

Claims (4)

  A bow made of a long material that can be bent in a curved shape by placing a buoyant body at a predetermined interval in the middle of the capture material in the vertical direction and attaching a support member made of a rigid body at a predetermined interval in the vertical direction. A marine suspended matter recovery fence, characterized in that a resistor made of a net-like body with a tension member attached to the lower part is connected to the capturing material at a predetermined interval by a rope-like suspension material.   The marine suspended matter collection fence according to claim 1, wherein an upper portion of the capturing material is projected from the sea surface.   The marine suspended matter collection fence according to claim 1, wherein buoys are connected to both sides of the capturing material.   The marine suspended matter collection fence according to claim 1, 2 or 3, wherein the trapping material is a net-like body.

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