JP2020001640A - Buoy and buoy installation recovery system - Google Patents

Abstract

To improve reduction in rolling due to influence of waves.SOLUTION: A buoy 1 has a constitution having: a frame body 2 provided with an opening unit 3 going through in one axial direction within a horizontal surface with a state of floating on still water surface as reference; and a trunk unit 4 provided below the frame body 2 and acting as a main buoyancy body, wherein buoyancy is provided so as to realize the arrangement in which the opening unit 3 of the frame body 2 contacts a water surface W.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a buoy that is placed floating on the water surface and a buoy installation and recovery system that uses the buoy.

  Buoys that are placed (installed) floating on the surface of the water include the function of wirelessly communicating with communicators in land-based communication facilities, communicators mounted on ships, and communicators mounted on aircraft, as well as onboard submersibles. There is known a communication relay buoy that has a function of performing acoustic communication with a communication device and relays wireless communication and acoustic communication.

  In addition, buoys having this type of communication function further include a function of acquiring position information using signals of a global navigation satellite system (GNSS) such as GPS, an underwater object such as a fish finder, It has also been proposed to have a function of performing acoustic positioning of a moving object and a function of transmitting acquired position information and positioning information via wireless communication or acoustic communication (for example, see Patent Document 1).

  A buoy equipped with this type of communication function, information acquisition and transmission function of acquired information is configured to include a vertically extending cylindrical body serving as a buoyant body, and the body penetrates the water surface. It is arranged to float on the water surface.

  Further, the buoy is provided with a radio communication antenna and a GNSS signal reception antenna on the upper end side of the trunk portion which is arranged above the water surface when floating on the water surface, and is provided below the water surface. A configuration is provided in which a transducer for acoustic communication and a transducer for acoustic positioning are provided on the lower end side of the body portion to be arranged.

JP-A-2006-122891

  By the way, as for the buoy, as the area of the shape of the water line surface increases, the fluctuation caused by the influence of the wave on the water surface tends to be larger.

  The buoy disclosed in Patent Document 1 has a cylindrical body having a volume required as a buoyant body, and is disposed so as to protrude above the water surface. It is the area of a circle with the same diameter as the body. Therefore, this buoy is affected by waves according to the diameter of the trunk.

  However, when the buoy is shaken, the radio communication antenna, the GNSS signal reception antenna, the acoustic communication transducer, and the acoustic positioning transducer that are mounted on the buoy have an angular attitude. And a slight change in position occurs. Therefore, there is a possibility that the communication quality is reduced in wireless communication and acoustic communication, the quality of a received signal is reduced in GNSS signal reception, and the positioning accuracy is reduced in acoustic positioning.

  When collecting buoys floating on the water surface, the buoy is lifted from the surface of the water using a crane mounted on the recovery ship, loaded onto the recovery ship, and then the voyage of the recovery ship Conventionally, buoys are generally transported.

  By the way, when a buoy is lifted by a crane mounted on a ship, it is necessary to perform a slinging operation on the buoy floating on the water surface, which actually requires labor and time. Further, when the buoy is swinging due to the influence of the waves during the slinging operation on the buoy, the operation requires a lot of trouble and time.

  Thus, the present invention provides a buoy capable of reducing the sway due to the effects of waves in a state where the buoy is placed floating on the water surface, and capable of performing recovery without using a crane mounted on a ship. Another object of the present invention is to provide a buoy installation and collection system using the buoy.

  The present invention provides a frame having an opening penetrating in a uniaxial direction in a horizontal plane on the basis of a state of floating on a still water surface, provided on a lower side of the frame, in order to solve the problem. A buoy having a main body serving as a main buoyant body, and having a buoyancy such that the opening of the frame is placed on the water surface.

  It is good also as composition provided with the antenna for wireless communications attached to the upper part of the above-mentioned frame.

  The body may include at least one of a transducer for acoustic communication and a transducer for acoustic positioning.

  The body may have a configuration in which an outer shape of a cross section perpendicular to a direction in which the opening of the frame penetrates is formed in an arc except for an upper end side.

  The body may have a configuration in which a cross-sectional shape in a horizontal plane is a streamline shape along a direction in which the opening of the frame penetrates.

  Also, a buoy and a ship, wherein the buoy has a frame having an opening penetrating in a uniaxial direction in a horizontal plane with reference to a state of floating on a still water surface, and a lower side of the frame. A main body provided as a main buoyant body provided, and a configuration having buoyancy such that the opening of the frame is applied to the water surface, and the ship is located at a position corresponding to a water line at a bow portion. A buoy installation / recovery system having a configuration in which a locking member that can be inserted into the opening of the frame body of the buoy is provided so as to protrude forward.

  ADVANTAGE OF THE INVENTION According to the buoy of this invention, in the state arrange | positioned by floating on the water surface, it can aim at reduction of the sway by the influence of a wave, and also can collect | recover without requiring the crane mounted in the ship. it can.

  Further, according to the buoy installation / recovery system of the present invention, a buoy floating on the water surface can be recovered without using a crane mounted on a ship.

It is a figure showing an embodiment of a buoy. It is a figure which shows the buoy installation collection system used for installation and collection of the buoy of FIG. It is a schematic front view which shows the ship in a buoy installation collection system. It is a figure showing the modification of a buoy.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

[Embodiment]
FIG. 1 shows an embodiment of a buoy, wherein FIG. 1 (a) is a schematic front view, FIG. 1 (b) is a schematic side view, and FIG. 1 (c) is a cut-away plan view at a water line position. It is. 2 shows a buoy installation and recovery system used for installation and recovery of the buoy of FIG. 1. FIG. 2 (a) is a schematic side view showing a state before the buoy is recovered, and FIG. 2 (b). FIG. 4 is a schematic side view showing a state in which buoys have been collected. FIG. 3 is a schematic front view showing a ship in the buoy installation and recovery system of FIG.

  The configuration of the buoy according to the present disclosure will be described based on a state in which the buoy is floating on a still water surface. Also, in this state, a description will be given assuming that one axis direction in the horizontal plane is an x direction, and a horizontal direction perpendicular to the x direction is a y direction.

  The buoy according to the present embodiment is indicated by reference numeral 1 in FIGS. 1A, 1B, and 1C, and is provided below a frame 2 having an opening 3 penetrating in the x-direction and a frame 2. And an antenna 5 for wireless communication attached to the upper side of the frame 2 and transducers 6 and 7 for acoustic signals provided on the body 4. . Furthermore, the buoy 1 of the present embodiment has a buoyancy such that the opening 3 of the frame 2 is placed on the water surface W when floating on the water surface W.

  In the present embodiment, as shown in FIG. 1A, the frame 2 includes an upper frame 8 extending in the y direction, a lower frame 9 extending in the y direction below the upper frame 8, and an upper frame. A configuration is provided that includes a pair of side frame portions 10 and 11 connected between the one end of the portion 8 and the lower frame portion 9 in the y direction and between the other end portions.

  The upper frame portion 8, the lower frame portion 9, and the side frame portions 10, 11 are formed in a flat plate shape having a set dimension L in the x direction.

  In the present embodiment, the dimension of the lower frame 9 in the y direction is set to be shorter than the dimension of the upper frame 8. Further, each of the side frame portions 10 and 11 has a shape which is obliquely bent at an intermediate position in the vertical direction corresponding to the difference in the length dimension of the upper frame portion 8 and the lower frame portion 9.

  Thereby, the frame 2 is provided with the opening 3 extending in the x direction with the dimension L inside the upper frame 8, the lower frame 9, and the side frames 10, 11. In the present embodiment, as shown in FIG. 1A, the opening 3 of the frame 2 has a hexagonal shape whose dimension extending in the y direction is larger than the vertical dimension.

  The trunk portion 4 generates the main buoyancy of the buoy 1 of the present embodiment, and the buoy 1 of the present embodiment has the posture shown in FIGS. A weight (not shown) for adjusting the positions of the buoyancy and the center of gravity and adjusting the balance of the buoyancy is provided so that the intermediate portion of the side frame portions 10 and 11 is in a floating state positioned on the water surface W. In addition, as a weight provided in the body 4, it is needless to say that a device housed inside the body 4 may also have a part or all of the function of the weight.

  Further, as shown in FIG. 1 (c), the cross section of the body 4 in a horizontal plane has a streamline shape along the x direction. As a result, the buoy 1 of the present embodiment reduces the resistance generated in the relative water flow along the x direction when the hull 4 is pushed in the x direction by the vessel 16 as described later. Can be.

  The buoy 1 of the present embodiment includes a transducer 6 for acoustic communication and a transducer 7 for acoustic positioning near the lower part of the body 4.

  For this reason, as shown in FIG. 1A, the body 4 is configured such that the outer shape of a cross section perpendicular to the x direction is formed by an arc excluding the upper end side, and the sound used in the sound communication and the sound positioning is used. Corners that may disturb the signal are shaped as small as possible.

  A lower end portion of a substantially cylindrical connecting member 12 extending vertically is attached to an upper end side of the body portion 4 at an intermediate portion in the x direction, and an upper end side of the connecting member 12 becomes a lower end portion of the frame body 2. 9 is attached to the lower side.

  The connection member 12 has a shape in which both sides in the y direction at the intermediate portion in the vertical direction are depressed to reduce the cross-sectional area by a plane perpendicular to the x direction. Further, it is preferable that the connecting member 12 has a streamline shape along the x direction in a cross-sectional shape of a horizontal plane at an intermediate portion in the vertical direction. Thus, the resistance of the connection member 12 generated in the relative water flow along the x direction is reduced.

  In addition, the connecting member 12 has a cross-sectional shape in the x direction not only at the middle part in the up-down direction, but also at a place above the middle part in the up-down direction, a place below the middle part, or a place over the entire length in the up-down direction. It may have a streamline shape along the line.

  A lower end of a vertically extending strut 13 is attached to an upper side of an upper frame 8 serving as an upper end of the frame 2.

  A case 14 for storing an antenna is attached to the upper end side of the strut 13, and an antenna 5 for wireless communication is provided inside the case 14. Further, an antenna 15 for receiving a GNSS signal may be provided inside the case 14.

  Although not shown, a wireless communication device and a device that acquires position information based on a GNSS signal are housed in the body. A cable connecting the wireless communication device and the antenna 5 and a cable connecting the device for acquiring position information and the antenna 15 are arranged along the connection member 12, the frame 2, and the strut 13. Each cable may be arranged in a space provided inside the connection member 12, the frame 2, and the strut 13, or may be attached to the outside.

  Although not shown, in the buoy 1 of the present embodiment, an acoustic communication device connected to the transducer 6 and an acoustic positioning device connected to the transducer 7 are also housed in the trunk.

  A wireless communication device, a device that acquires position information based on a GNSS signal, an acoustic communication device, and an acoustic positioning device are respectively buoys having existing communication functions according to the purpose of use of the buoy 1 of the present embodiment. A buoy having a relay function, a wireless communication device mounted on an observation buoy, or the like, a device for acquiring position information based on a GNSS signal, an acoustic communication device, and an acoustic positioning device may be provided.

  In the buoy 1 of the present embodiment having the above-described configuration, the side frame portions 10 and 11 of the frame 2 are arranged on the water surface W when the buoy 1 is floating on the water surface W. Therefore, the water line shape of the buoy 1 of the present embodiment is the cross-sectional shape of each of the side frames 10 and 11 shown by hatching in FIG. The area can be significantly reduced as compared with the cross-sectional shape of the body 4 serving as a buoyant body in a horizontal plane.

  Therefore, the buoy 1 of the present embodiment can reduce the sway caused by the influence of the waves in a state where the buoy 1 is placed floating on the water surface W.

  The buoy 1 according to the present embodiment suppresses a decrease in communication quality of wireless communication via the antenna 5, suppresses a decrease in quality of a GNSS signal received by the antenna 15, It is possible to suppress a decrease in the communication quality of the acoustic communication via the wave device 6 and a decrease in the positioning accuracy of the acoustic positioning via the wave transmitter / receiver 7.

  Next, a buoy installation and collection system using the buoy 1 of the present embodiment will be described.

  As shown in FIG. 2, the buoy installation / recovery system includes the buoy 1 of the present embodiment and a ship 16.

  The boat 16 has a configuration in which a rod-shaped locking member 17 extending in the front-rear direction is provided at a position corresponding to the water line at the bow so as to protrude forward.

  As shown in FIG. 3, the shape of the locking member 17 as viewed from the front is a shape obtained by reducing the shape of the opening 3 of the frame 2 of the buoy 1 of the present embodiment by a set dimension. . Thereby, as shown in FIG. 2B, the locking member 17 can be inserted into the opening 3 of the frame 2 of the buoy 1 of this embodiment from one side in the x direction.

  The locking member 17 has a longitudinal dimension set to be larger than a dimension L (see FIG. 1B) in which the opening 3 of the buoy 1 of the present embodiment extends in the x direction.

  Further, the locking member 17 is provided with a tapered portion 18 tapering toward the front end on the front end side.

  As a result, as shown in FIG. 2A, the marine vessel 16 moves forward with respect to the buoy 1 of the present embodiment floating on the water surface W so as to approach from one side in the x direction, and the locking member 17. 2 is inserted into the opening 3 of the buoy 1 of the present embodiment, and further advanced from that state, as shown in FIG. 2B, the locking member 17 is moved to the frame 2 of the buoy 1 of the present embodiment. Can be fitted inside. Therefore, in this state, the boat 16 can hold the buoy 1 of the present embodiment via the frame 2 fitted with the locking member 17 so as to move along with the forward movement of the boat 16. it can.

  Therefore, in the buoy installation / recovery system, the buoy 1 of the present embodiment is transported to the target position by moving the ship 16 forward from the state shown in FIG. 2B to the set target position. .

  After arriving at the target position, the locking member 17 can be pulled out from the inside of the frame 2 of the buoy 1 of the present embodiment by moving the marine vessel 16 backward. The hold is released.

  As described above, according to the buoy installation and recovery system using the buoy 1 of the present embodiment, the crane mounted on the ship 16 is required for the buoy 1 of the present embodiment that is placed floating on the water surface W. It is possible to carry out the work of collecting without any. Therefore, the labor and time required for the collection operation of the buoy 1 of the present embodiment can be reduced.

  In addition, the buoy 1 of the present embodiment is arranged in a state of being floated on the water surface W to reduce the sway due to the influence of the waves. The operation of inserting the buoy 1 of the embodiment into the opening 3 can be facilitated.

  Further, the buoy installation and collection system using the buoy 1 of the present embodiment does not require any labor-intensive work such as slinging work when the buoy 1 of the present embodiment is held by the locking member 17 of the boat 16. For example, it is possible to provide a system suitable for a case where the ship 16 is an unmanned watercraft, and the buoy 1 of the present embodiment is realized by remotely controlling the watercraft.

  In the buoy 1 of the present embodiment, the cross-sectional shape of the body 4 in the horizontal plane, and the cross-sectional shape of the connecting member 12 in the middle in the vertical direction are streamline shapes along the x direction. Therefore, when the buoy 1 of the present embodiment held by the locking member 17 of the boat 16 is moved with the forward movement of the boat 16, the resistance of water generated in the trunk 4 and the connecting member 12 is reduced. Therefore, when the marine vessel 16 conveys the buoy 1 of the present embodiment by forward movement, an excessive load occurs on the propulsion device (not shown) of the marine vessel 16 or the operability is deteriorated by steering the marine vessel 16. It is possible to suppress the risk of occurrence.

  In the buoy 1 of the present embodiment, the opening 3 of the frame 2 has a hexagonal shape as shown in FIG. Therefore, in a state where the locking member 17 of the boat 16 having a shape corresponding to the opening 3 is fitted, even if the buoy 1 of the present embodiment receives an external force such as water resistance, the locking member of the boat 16 The rotation of the frame body 2 around 17 is suppressed, and therefore, the possibility that the buoy 1 of the present embodiment changes its posture can be suppressed.

  In addition, the buoy installation and collection system using the buoy 1 of the present embodiment is also applicable to the transport operation when the buoy 1 of the present embodiment is arranged (installed) on the water surface W of a use point set according to the purpose of use. Can be used.

[Modification]
In the said embodiment, the example of the structure in which the frame 2 of the buoy 1 was provided with the hexagonal opening part 3 as shown to Fig.1 (a) was shown. On the other hand, in the buoy of the present disclosure, the shape of the opening 3 of the frame 2 is a rectangle extending in the y direction as shown in FIG. 4A, and a rectangle extending in the vertical direction as shown in FIG. 4 (c), or any other polygonal shape. The frame 2 of the buoy 1 may be elliptical as shown in FIG.

  In this case, the shape of the locking member 17 of the boat 16 as viewed from the front may be a shape corresponding to the shape of the opening 3 of the buoy frame 2 of the present disclosure.

  Even with these configurations, the buoy of the present disclosure has a structure in which the buoy of the present disclosure receives the external force such as water resistance in a state where the locking member 17 of the marine vessel 16 is fitted into the opening 3, and the buoy of the marine vessel 16 does not. The rotation of the frame body 2 around the locking member 17 is suppressed, and the possibility that the buoy of the present disclosure changes its posture can be suppressed.

  The shape of the opening 3 of the frame 2 of the buoy of the present disclosure may be circular as shown in FIG. In this case, the shape of the locking member 17 of the marine vessel 16 as viewed from the front may be a circle corresponding to the shape of the opening 3 of the buoy frame 2 of the present disclosure. In this case, a detent member or device for suppressing rotation of the frame 2 around the locking member 17 may be separately provided.

[Application example]
As an application example of the buoy and the buoy installation / recovery system of the present disclosure, the following configuration may be adopted.

  The buoy of the present disclosure has a configuration in which a transmitting device that transmits a direction specifying signal by radio waves, light, or sound having directivity in the x direction is provided on the upper end side of the frame 2, and the ship 16 in the buoy installation and recovery system includes: It may be configured to include a receiving device that receives the direction specifying signal.

  According to this configuration, the marine vessel 16 can receive the direction identification signal with the receiving device only when the buoy of the present disclosure is arranged in the x direction from the frame 2. Therefore, the ship 16 moves to the position where the direction specifying signal can be received, and then approaches the buoy of the present disclosure while maintaining the state where the direction specifying signal can be received, thereby causing the locking member 17 to move. The operation of inserting the buoy according to the present disclosure into the opening 3 of the buoy frame 2 along the x direction can be performed more easily and more reliably.

  Therefore, the buoy installation / recovery system employing this configuration is more suitable when the ship 16 is used as an unmanned watercraft and the marine vehicle is operated remotely to recover the buoy 1 of the present embodiment. It can be.

  Note that the buoy and the buoy installation / recovery system of the present disclosure are not limited to only the above-described embodiment, modified examples, and applied examples.

  The size and shape of the torso 4 and the ratio of the size to the frame 2 are for convenience of illustration, and reflect the actual size and shape of the torso 4 and the ratio of the size to the frame. Not something.

  The buoy and the buoy installation / recovery system of the present disclosure may be applied to a buoy used in any of a sea and a lake, and the installation / recovery system therefor.

  The buoy of the present disclosure may be configured to include only one of the transducer 6 for acoustic communication and the transducer 7 for acoustic positioning on the trunk 4.

  The buoy of the present disclosure may be applied to a buoy for any purpose of use as long as it is desired to reduce sway due to the effect of waves in a state where the buoy is placed floating on the water surface W. Therefore, depending on the purpose of use, the buoy of the present disclosure includes the transmitter / receiver 6 for acoustic communication, the transmitter / receiver 7 for acoustic positioning, the antenna 5 for wireless communication, and the antenna 15 for receiving a GNSS signal. May be provided with one or more of them, or may not be provided with all of them.

  The ratio of the shape of the ship 16 in the buoy installation and recovery system and the size corresponding to the buoy of the present disclosure is for convenience of illustration, and corresponds to the actual shape of the ship 16 and the buoy of the present disclosure. It does not reflect the size ratio.

  If the ship 16 in the buoy installation and recovery system includes the locking member 17 in an arrangement capable of being inserted into the opening 3 of the frame 2 of the buoy of the present disclosure when carrying the buoy of the present disclosure, A configuration in which the member 17 is provided so as to be stowable, or a configuration in which the locking member 17 can be pulled up above the water line of the hull may be adopted. According to this configuration, it is possible for the marine vessel 16 to obtain the same cruising performance as a marine vessel without a locking member when the buoy according to the present disclosure travels without transporting the buoy.

  Of course, various changes can be made without departing from the spirit of the present invention.

Reference Signs List 1 buoy, 2 frame, 3 opening, 4 trunk, 5 antenna, 6 transducer, 7 transducer, 16 ship, 17 locking member, W water surface

Claims (6)

A frame body having an opening penetrating in a uniaxial direction in a horizontal plane, based on a state of floating on a still water surface,
A body serving as a main buoyant body provided on the lower side of the frame,
A buoy characterized by having buoyancy such that the opening of the frame body is placed on the water surface. The buoy according to claim 1, further comprising a wireless communication antenna attached to an upper side of the frame. The buoy according to claim 1, wherein the trunk includes at least one of a transducer for acoustic communication and a transducer for acoustic positioning. 4. The buoy according to claim 3, wherein the body has a cross-sectional shape perpendicular to a direction in which the opening of the frame penetrates, and an outer shape of the cross-section is formed except for an upper end side. 5. The buoy according to any one of claims 1 to 4, wherein the body has a horizontal cross-sectional shape in a streamline shape along a direction in which the opening of the frame penetrates. Equipped with a buoy and a ship,
The buoy,
A frame body having an opening penetrating in a uniaxial direction in a horizontal plane, based on a state of floating on a still water surface,
A body serving as a main buoyant body provided on the lower side of the frame,
A configuration having buoyancy such that the opening of the frame body is placed on the water surface,
The buoy has a configuration in which a locking member that can be inserted into the opening of the frame body of the buoy is protruded forward at a position corresponding to a water line at a bow portion. Installation collection system.

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