JP5827430B1 - Underwater exploration boat - Google Patents

Abstract

A submarine exploration boat that can radiate electromagnetic waves from the water surface even when the water depth is deep. A submarine exploration carrier 1 is a submarine exploration carrier 1 on which an electromagnetic wave radar device 60 is mounted, and a plurality of floats 10 and 10 and a plurality of floats 10 and 10 are connected to each other. The connecting rods 20 and 21, the flat plate 40 that is disposed on the plurality of connecting rods 20 and 21 and has a hole penetrating in the vertical direction, and the bottomed cylindrical storage box 50 that is inserted into the hole The transmission box and the reception antenna of the electromagnetic wave radar device 60 are housed in the housing box. [Selection] Figure 1

Description

  The present invention relates to a submarine exploration trolley that is pulled by a small ship and moves on the water surface.

In recent years, a nondestructive inspection method using an electromagnetic wave radar device has been used for exploring the water bottom (see Patent Documents 1 and 2 below).
Such water bottom exploration, unlike inspection of structures, needs to emit electromagnetic waves from the water surface toward the water bottom. For this reason, in the following Patent Document 1, a vehicle traveling on the bottom of the water supports the electromagnetic wave radar device.

Japanese Patent Laid-Open No. 7-181256 Japanese Patent Laid-Open No. 11-23704

  However, if the electromagnetic wave radar device is supported by a vehicle traveling on the bottom of the water, the electromagnetic wave radar device may not be positioned on the water surface when the water depth is deep, in other words, the electromagnetic wave may not be emitted from the water surface.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a submarine exploration boat that can radiate electromagnetic waves from the water surface even when the water depth is deep.

In order to solve the above-described problem, a bottom surveying boat according to a first aspect of the present invention is a bottom surveying boat that can be equipped with an electromagnetic wave radar device , and includes a pair of floats and the pair of floats. A plurality of connecting rods to be connected; a flat plate formed on the plurality of connecting rods and having a hole penetrating in the vertical direction; and a bottomed cylindrical storage box inserted into the hole; provided, inside the housing box, characterized in that it is possible to accommodate the receiving antenna and transmitting antenna of the electromagnetic wave radar device.

  According to the first invention, since the electromagnetic wave radar device is mounted on the water bottom exploration trolley that can float on the water surface, the electromagnetic wave radar device can be positioned on the water surface regardless of the water depth, and the electromagnetic wave is radiated from the water surface. be able to. Further, in the prior art, the vehicle cannot travel on the bottom when there is a deposit such as a tree on the bottom of the water. However, according to the present invention, electromagnetic waves can be emitted from the water surface even if there is a deposit on the bottom of the water.

  Here, it is desirable to reduce the size of the submarine exploration trolley in consideration of the case where the submarine exploration trolley is transported or the submarine exploration trolley is stored. On the other hand, if the watercraft for exploring the bottom of the water is downsized, it will be easily shaken, resulting in a disadvantage that the directions of the transmitting antenna and the receiving antenna change.

  Therefore, in order to solve this problem, in the submarine exploration base boat according to the second invention, the float is formed with a fitting portion into which the connecting rod is fitted, and the connecting rod and the flat plate are The fixing box is separably fixed, and an outer peripheral surface of the storage box is formed with a collar portion that is an upper surface of the flat plate and engages with an end edge of the through hole, and the flat plate is foldable. It is characterized by that.

  According to 2nd invention, a pair of float and a connection rod isolate | separate by removing a connection rod from the fitting part of a float, and a connection rod and a flat plate isolate | separate by removing a fastener. Moreover, a flat plate and a storage box isolate | separate by lifting a storage box from a through-hole. Further, the flat plate is folded to reduce the size. Thus, according to the second aspect of the invention, it is possible to reduce the size of the submarine exploration boat when not in use.

  In addition, when a bottom-floor exploration carrier and a small ship are connected by a connecting device that cannot be bent in the vertical direction, the bottom-floor exploration carrier will be tilted if the height of the bottom-floor exploration carrier and the small ship floating on the water surface are different. . For this reason, the directions of the transmitting antenna and the receiving antenna mounted on the bottom survey boat are changed.

  Therefore, in order to solve this problem, a submarine exploration base boat according to a third aspect of the invention includes a small ship that can be remotely operated and a connecting device that connects at least one of the plurality of connecting rods. The instrument is characterized in that it can be bent in the vertical direction.

  According to the third aspect of the invention, when the height of the bottom-floor exploration boat floating on the water surface and the small boat are different, the connecting device is bent in the vertical direction. For this reason, the bottom survey boat is kept horizontal, and the direction (downward) of the transmitting antenna and the receiving antenna does not change.

  When the water bottom is expected to be inclined, it is desirable to incline the transmitting antenna and the receiving antenna so as to be parallel to the water bottom (inclined surface).

  Therefore, in order to solve this problem, the bottom survey boat according to the fourth invention is characterized in that the transmitting antenna and the receiving antenna can be mounted in an inclined state with respect to the water surface. And

  According to the fourth invention, the transmitting antenna and the receiving antenna can be mounted in a state inclined with respect to the water surface, in other words, in a state parallel to the water bottom surface (inclined surface).

As mentioned above, according to 1st invention, even if it is a case where the water depth is deep, a water bottom can be investigated.
Moreover, according to 2nd invention, the bottom ship for underwater exploration when not in use can be reduced in size.
Further, according to the third invention, since the directions of the transmitting antenna and the receiving antenna do not change, a strong reflected wave can be obtained and accurate topographic information (data) of the water bottom can be collected. According to the fourth invention, a strong reflected wave is obtained from the inclined bottom surface, and accurate topographic information (data) of the bottom can be collected.

It is a perspective view of a small boat and a bottom survey boat according to an embodiment of the present invention. It is the perspective view which looked at the bottom for water bottom exploration from the lower left of the front side. It is a disassembled perspective view of the bottom ship for water bottom exploration. It is the perspective view which looked at the connecting instrument extracted from the bottom boat for water bottom exploration. It is a top view of the bottom ship for water bottom exploration. It is a side view of a small ship and a submarine exploration trolley, (a) is a side view when the bottom of a submarine exploration is lower than a small ship, and (b) is a subsurface exploration trolley. It is a side view in the case of being higher than a small ship.

  Embodiments of the present invention will be described with reference to the drawings. First, the electromagnetic wave radar device 60 mounted on the water bottom exploration carrier 1 and the small ship 100 that pulls the water bottom exploration carrier 1 will be described.

(Electromagnetic wave radar device)
The electromagnetic wave radar device 60 shown in FIG. 1 includes a GPS (Global Positioning System) 61, a control device 62, an antenna unit 63, and wiring (not shown) for connecting them.

  The antenna unit 63 is a device that stores a transmitting antenna (not shown) and a receiving antenna (not shown) in a casing. A pair of handles 64 are provided on the upper surface of the antenna unit 63. The transmitting antenna is a device for radiating electromagnetic waves downward from the water near the water surface. The receiving antenna is a device for receiving a reflected wave reflected from the bottom of the water.

When electromagnetic waves are radiated from the transmitting antenna, the electromagnetic waves reach the deposit (first layer) that propagates in water and deposits on the bottom of the water. Then, a part of the electromagnetic wave is reflected at the boundary surface (first boundary surface) between water and the deposit (first layer), and the remaining part is incident on the deposit (first layer). Furthermore, the electromagnetic waves incident on the deposit (first layer) are reflected at the boundary surface (second boundary surface) between the ground (second layer) and the deposit (first layer) partially constituting the water bottom, The remainder enters the ground (second layer).
Thus, in the process of traveling to a predetermined depth, the electromagnetic wave repeats that a part of the electromagnetic wave is reflected at the boundary surface and the remaining part is incident.
As a result, the receiving antenna first receives the first reflected wave reflected by the first boundary surface, and then receives the second reflected wave reflected by the second boundary surface.

The control device 62 controls the timing of radiating electromagnetic waves from the transmitting antenna and the frequency of the electromagnetic waves. In addition, the frequency band of the electromagnetic waves used for water bottom exploration is 15 MHz to 200 MHz.
The control device 62 calculates the depth from the water surface S to the boundary surface by the time required from the emission of the electromagnetic wave to the reception of the reflected wave, and acquires depth information.
Further, the control device 62 stores the depth information in association with the position information acquired by the GPS 61.
And after acquiring the depth information of each place, the control apparatus 62 combines the depth information of each place based on position information, and is constructing the ground configuration information of the whole water bottom.

(Small ship)
The small ship 100 has a total length of 2.7 m and a total width of 1.6 m, and is a ship that moves on the water surface S by remote control.
As shown in FIG. 1, the small boat 100 includes a main body 110, a first pipe 111 penetrating the rear portion of the main body 110 in the left-right direction, two square shafts 112 extending rearward from the main body 110, and the rear of the square shaft 112. A second pipe 113 welded to the end and extending in the left-right direction, and two auxiliary floats 114 and 114 disposed on both sides of the main body 110 are provided.

The main body 110 includes two receivers 101 and 102 that receive signals transmitted from a controller (not shown), and a screw propeller 103 that is driven by a motor (not shown).
One of the two receivers 101 and 102 is a short-distance receiver having a frequency band of 2.4 GHz, and the other is a long-distance receiver having a frequency band of 430 MHz. The two receivers 101 and 102 are provided at the rear of the small boat 100.
The screw propeller 103 is provided on the front side of the small boat 100. For this reason, the submarine exploration boat 1 can be connected to the rear side of the small boat 100.

  The auxiliary float 114 is a resin container that extends in the front-rear direction, is filled with air, and has floatability. The auxiliary float 114 is disposed on each of the left side and the right side of the small boat 100. For this reason, the small boat 100 is hard to roll.

(Boat for underwater exploration)
As shown in FIG. 1, the bottom survey boat 1 has a total length of 1.6 m and a total width of 1.6 m, and is a ship on which the electromagnetic wave radar device 60 is mounted.
The submarine exploration trolley 1 does not have a propulsive force, and moves on the water surface by being pulled by the small boat 100.
As shown in FIG. 2, the bottom survey boat 1 extends forward from a pair of floats 10, 10, two connecting rods 20, 21 connecting the pair of floats 10, 10, and a front connecting rod 20. A connecting device 30, a flat plate 40 disposed above the connecting rods 20 and 21, and a storage box 50 located at the center of the flat plate 40 are provided.

The pair of floats 10 and 10 are spaced apart in the left-right direction. Each float 10 is a resin container that extends in the front-rear direction, is filled with air, and has floatability.
As shown in FIG. 3, fitting portions 11 are formed at the front and rear portions of the upper surface of the float 10. The fitting part 11 is a groove extending in the left-right direction, and has a substantially C-shape that opens upward in a side view.

  Each of the connecting rods 20 and 21 is a cylindrical metal member extending in the left-right direction. Each end portion of the connecting rods 20 and 21 is fitted to the fitting portion 11 of the float 10. That is, the pair of floats 10 and 10 are connected to each other via the connecting rods 20 and 21.

As shown in FIG. 4, the connecting device 30 is a prismatic metal member that extends in the front-rear direction and connects the small boat 100 and the submarine exploration carrier 1 so as to be aligned in the front-rear direction.
The connecting device 30 includes a front part 35, an intermediate part 36 and a rear part 37 extending in the front-rear direction, a first fixing member 31 fixed to the front end of the front part 35, and a second fixing member fixed to the rear end of the rear part 37. 32.

The rear end of the front portion 35 and the front end of the intermediate portion 36 are connected by a first pin 38 extending in the left-right direction. For this reason, the connection part of the front part 35 and the intermediate part 36 can be bent only in the up-down direction.
The rear end of the intermediate portion 36 and the front end of the rear portion 37 are connected by a second pin 39 extending in the left-right direction. For this reason, the intermediate part 36, the rear part 37, and the connection part can be bent only in the vertical direction.
In the present embodiment, the front portion 35 and the like are connected by the first pin 38 and the second pin 39 in order to be able to bend the connecting device 30 in the vertical direction, but the present invention is not limited to this. . In the present invention, for example, the front portion 35 and the like may be connected by an elastic body such as rubber or a coil spring.

Each of the first fixing member 31 and the second fixing member 32 has a rectangular parallelepiped shape.
Each of the first fixing member 31 and the second fixing member 32 is formed with a hole 33 penetrating in the left-right direction and a female screw hole 34 penetrating in the up-down direction.

  The second pipe 113 of the small boat 100 is inserted through the hole 33 of the first fixing member 31 (see FIG. 1). A bolt (not shown) that penetrates the second pipe 113 inserted through the hole 33 in the vertical direction is screwed into the female screw hole 34 of the first fixing member 31. That is, the first fixing member 31 is fixed so as not to rotate around the second pipe 113.

The connecting rod 20 is inserted through the hole 33 of the second fixing member 32 (see FIGS. 2 and 3).
Further, a bolt B1 (see FIG. 5) passing through the connecting rod 20 inserted in the hole 33 in the vertical direction is screwed into the female screw hole 34 of the second fixing member 32. That is, the second fixing member 32 is fixed so as not to rotate about the connecting rod 20.

In addition, as shown in FIG. 3, a third fixing member 22 formed in the same shape as the first fixing member 31 and the second fixing member 32 is inserted through the rear connecting rod 21.
A bolt B1 (see FIG. 5) passing through the connecting rod 21 inserted through the hole 33 in the up-down direction is screwed into the female screw hole 34 of the third fixing member 22. For this reason, the third fixing member 22 is fixed so as not to rotate around the connecting rod 20.

As shown in FIGS. 3 and 5, a rectangular hole 44 having a rectangular shape in plan view for installing the storage box 50 is formed in the central portion of the flat plate 40.
The flat plate 40 is placed on the second fixing member 32 and the third fixing member 22. The flat plate 40 is fixed to the second fixing member 32 and the third fixing member 22 by four bolts B1 (see FIG. 5). Moreover, since the 2nd fixing member 32 and the 3rd fixing member 22 are united with the flat plate 40, the space | interval of the connecting rods 20 and 21 is kept constant.

The flat plate 40 includes two rectangular plates 41 and 41 connected by a hinge (not shown) and can be folded.
The hinge is provided on the lower surface of the flat plate 40, and the lower surfaces of the plates 41 and 41 overlap when the flat plate 40 is folded. A holding portion 42 that prevents the flat plate 40 from being folded is provided on the upper surface of the flat plate 40. The flatness of the flat plate 40 is held by the holding portion 42.

  As shown in FIG. 3, fixing bases 45 and 46 for arranging the GPS 61 and the control device 62 above the flat plate 40 are provided on the upper surface of the flat plate 40. For this reason, it is difficult for the GPS 61 and the control device 62 to be splashed with water.

  The storage box 50 is a bottomed cylindrical container that opens upward. An antenna unit 63 is housed in the housing box 50. Further, the transmitting antenna and the receiving antenna are arranged downward, in other words, facing the bottom wall 51 side of the storage box 50. For this reason, the bottom wall 51 of the storage box 50 is a propagation path through which electromagnetic waves and reflected waves propagate. The storage box 50 is made of wood so that propagation of electromagnetic waves and reflected waves is not hindered.

The storage box 50 is disposed in the rectangular hole 44 of the flat plate 40. Thereby, the bottom wall 51 of the storage box 50 is positioned below the flat plate 40.
Moreover, the bottom wall 51 of the storage box 50 is located below the water surface S (see FIG. 6). This prevents the atmosphere from being interposed between the bottom wall 51 of the storage box 50 and the water surface S, in other words, electromagnetic waves and reflected waves do not propagate through the atmosphere.
On the other hand, the bottom wall 51 of the storage box 50 is located above the lower surface of each float 10 (see FIG. 6). Therefore, when the water bottom exploration boat 1 is placed on the ground, the bottom wall 51 of the storage box 50 does not contact the ground.

  Further, most of the storage box 50 is located below the flat plate 40. Here, the storage box 50 stores the antenna unit 63 and is heavier than other components. For this reason, the center of gravity of the submarine exploration boat 1 is low, and the stability of the submarine exploration boat 1 is high.

Further, a front connecting rod 20 is disposed in front of the storage box 50, and a rear connecting rod 21 is disposed behind the storage box 50 (see FIG. 2).
For this reason, the two connecting rods 20 and 21 are not arranged on the bottom wall 51 side of the containing box 50 which is a propagation path through which electromagnetic waves and reflected waves propagate. In this way, there is no possibility of disturbing reception of electromagnetic wave radiation and reflection.

  Moreover, the storage box 50 and each float 10 are spaced apart in the left-right direction (see FIG. 2). That is, a gap L is formed between the storage box 50 and each float 10. If it does in this way, when it goes along with advance or retreat of the bottom survey boat 1, the water that has entered between the pair of floats 10, 10 will flow through the gap L, so that it is difficult to receive the resistance of water. .

  In addition, a flange portion 52 that protrudes in the horizontal direction is provided on the outer peripheral surface of the storage box 50. The flange 52 is locked to the upper surface of the flat plate 40. Therefore, the storage box 50 is not dropped from the flat plate 40. Moreover, the collar part 52 and the flat plate 40 are being fixed with the volt | bolt B2 (refer FIG. 5) and a nut (not shown).

Next, with reference to FIG. 6, a case will be described in which the height of the submarine exploration boat that floats on the water surface due to the generation of a wave is different from that of the small boat.
As shown in FIG. 6 (a), the small ship 100 is higher than the submarine exploration carrier 1 due to the generation of waves, or as shown in FIG. 6 (b), the submarine exploration carrier 1 May be higher than the small boat 100.
According to the submarine exploration boat 1 of the present embodiment, in such a case, between the front part 35 and the intermediate part 36 of each connecting device 30 or between the intermediate part 36 and the rear part 37 is bent, The level of the trolley 1 is maintained. For this reason, the direction (downward) of the transmitting antenna and the receiving antenna mounted on the submarine exploration boat 1 is also maintained.

Next, a method for disassembling the bottom survey boat 1 will be described.
First, the bolt B2 (see FIG. 5) is loosened and removed from the nut (not shown), and the storage box 50 is separated from the flat plate 40 as shown in FIG.
Next, the bolt B <b> 1 (see FIG. 5) is loosened and removed from the second fixing member 32 and the third fixing member 22, and the flat plate 40 is separated from the second fixing member 32 and the third fixing member 22.
Subsequently, the connecting rods 20 and 21 are pulled out from the fitting portions 11 of the pair of floats 10 and 10, and the connecting rods 20 and 21 are separated from the pair of floats 10 and 10.
Further, the connecting rod 20 is removed from the hole 33 of the second fixing member 32 to separate the connecting rod 20 and the connecting device 30.
As for the electromagnetic wave radar device 60, the antenna unit 63 is separated from the storage box 50 by pulling upward while gripping the handle 64. Further, the GPS 61 and the control device 62 are removed from the fixed bases 45 and 46.
As described above, the submarine exploration boat 1 according to the embodiment is disassembled for each component of the pair of floats 10 and 10, the two connecting rods 20 and 21, the connecting device 30, the flat plate 40, and the storage box 50. it can.

As described above, according to the submarine exploration boat 1 of the embodiment, electromagnetic waves can be radiated from the water surface regardless of the water depth, so that the water bottom can be explored even when the water depth is deep.
Further, according to the submarine exploration boat 1 of the embodiment, the submarine exploration boat 1 when not in use can be downsized.
Furthermore, according to the submarine exploration boat 1 of the embodiment, even if the heights of the submarine exploration submarine floating on the water surface and the small ship are different due to the generation of waves, the directions of the transmitting antenna and the receiving antenna are different. (Downward) is held. Therefore, accurate data can be obtained.

As mentioned above, although the bottom ship 1 of the embodiment has been described, the present invention is not limited to the example described in the embodiment.
For example, although the connection tool 30 of the embodiment has two hinge structures that rotate in the vertical direction, the present invention may have one or three or more.

In the embodiment, the antenna unit 63 is in a horizontal state (the direction of the transmitting antenna and the receiving antenna is downward), but the present invention is between the flat plate 40 and the flange portion 52 of the storage box 50. The antenna unit 63 may be used in an inclined state by interposing a member whose upper side is inclined with respect to the lower side.
According to this, when it is expected that the water bottom is inclined, a strong reflected wave can be obtained from the inclined water bottom by inclining the antenna unit 63 so as to be parallel to the inclined surface. Accurate data can be collected.

In addition to the above, the configuration for inclining the antenna unit 63 includes a cylinder whose length in the vertical direction changes as the rod advances and retreats between the flat plate 40 and the flange portion 52 of the storage box 50. You may let them.
In addition, in addition to inclining the storage box 50, when using a pair of connecting devices 30 that are not inclined or can be bent in the vertical direction, the pair of connecting devices 30 and the connecting rod 20 The investigation carrier 1 itself may be inclined by changing the attachment angle.

DESCRIPTION OF SYMBOLS 1 Submarine exploration boat 10, 10 Float 20, 21 Connecting rod 30 Connecting tool 40 Flat plate 44 Rectangular hole (hole)
50 Containment Box 51 Bottom Wall 52 Buttocks 60 Electromagnetic Radar Device 61 GPS
62 Arithmetic unit 63 Antenna unit (transmitting antenna, receiving antenna)
100 Small ship 114 Auxiliary float

Claims (4)

A water bottom Exploration barge capable of mounting an electromagnetic wave radar device,
A pair of floats;
A plurality of connecting rods connecting the pair of floats;
A flat plate that is disposed on the plurality of connecting rods and has a hole penetrating in the vertical direction;
A bottomed cylindrical storage box inserted into the hole;
With
A submarine exploration trolley capable of accommodating a transmitting antenna and a receiving antenna of the electromagnetic wave radar device in the container box. The float is formed with a fitting portion into which the connecting rod is fitted,
The connecting rod and the flat plate are fixed so as to be separable by a fastener,
On the outer peripheral surface of the storage box, a flange portion is formed which is an upper surface of the flat plate and is engaged with an end edge of the through hole.
The submarine exploration boat according to claim 1, wherein the flat plate is foldable. A connecting device for connecting a remotely operable small boat and at least one of the plurality of connecting rods;
The underwater exploration trolley according to claim 1 or 2, wherein the connecting device is freely bent in a vertical direction.   The underwater exploration trolley according to any one of claims 1 to 3, wherein the transmitting antenna and the receiving antenna can be mounted in an inclined state with respect to a water surface.

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