JP2001133360A - Wave making device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wave making device having wave making plates connected in a broken line shape more continuous in the lateral direction of a wave while keeping a main shape movement in the depth direction to generate a three-dimensional wave suitable for the actual ocean. SOLUTION: This wave making device comprises wave making plates rockably mounted on the bottom of a water tank to generate waves within the water tank. In this wave making device for generating waves within the water tank, the bottom edges of the adjacent triangular wave making plates are alternately vertically arranged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wave-making apparatus for artificially generating waves on a liquid surface such as a water tank.

[0002]

2. Description of the Related Art Conventionally, as a method for accurately generating a three-dimensional wave, a wave-making apparatus disclosed in Japanese Patent Publication No. 6-70598 has been proposed. According to the publication, this wave-making device is composed of a number of receivers arranged side by side at predetermined intervals in the horizontal direction and moving forward and backward, and two of these receivers which are adjacent to each other and connected to each other. And a number of wave-making plates swinging in the direction. These wave-making plates are constituted by wave-making plates in which one connecting portion slides in the direction parallel to the receiving member and the other connecting portion rotates around an axis extending in the vertical direction. The interval between two adjacent wave-making plates among these wave-making plates is closed by a flexible seal plate, and one end of these flexible seal plates is fixed to the wave-making plate, and the other end is slid. It is described that it is provided movably.

[0003]

However, in Japanese Patent Publication No. 6-70598, as shown in FIG. 10, the front portion 81A of each wave-making plate 81 is moved back and forth by the driving device 83 while maintaining the vertical position. The velocity (V) of the water particles eliminated by the wave-making plate 81 is the same at any depth because the piston-type movement is performed. This characteristic is such that the wave (V) of water particles in a water area having a shallower depth than the wavelength of a wave, such as in a harbor field, is almost back and forth, and that there is not much difference in motion amplitude in the depth direction. It is suitable for generating a natural wave. However, this characteristic is that waves in the water area where the water depth is deeper than the wavelength of the waves, such as in the shipbuilding field, that is, waves in which the elliptic motion decreases as the motion of the water particles approaches the water bottom by elliptical motion. Are quite different.
Conventionally, such a wave has a motion (Vb) of water particles in wave formation of a relatively deep water in wave formation of a two-dimensional wave considering only the traveling direction of the wave and the depth direction. As a wave plate having a high degree of coincidence, a main wave plate 91 as shown in FIG. 11 has been used. However, FIG.
When the wave making plates 91 as shown in FIG. 12 are simply arranged and individually operated as a three-dimensional wave making machine, as shown in FIG. Seen from above, it has a characteristic that the adjacent wave-making plates are inevitably in a stepped shape (D), and has a drawback that it does not match the actual wave.

The present invention focuses on the above-described conventional problems, and has a wave-making plate that is connected in a broken line shape with more continuity in the width direction of the wave while maintaining the main motion in the depth direction. It is another object of the present invention to provide a wave making device that generates a three-dimensional wave suitable for an actual ocean.

[0005]

In order to achieve the above-mentioned object, a wave-making apparatus according to the present invention comprises a wave-making plate attached to the bottom of a water tank so as to swing freely and a wave-generating wave inside the water tank. The wave device has a configuration in which the bottom sides of adjacent triangular wave plates are alternately arranged vertically. In addition, the adjacent triangular wave plates are swingably connected by the connecting portion, and the wave plate is oscillated in the front-rear direction to be able to operate in a snake shape above the wave plate.

A wave-making apparatus for arranging parallelogram-shaped wave-making plates adjacent to each other in a line and swingably attaching to the bottom of the water tank to generate waves inside the water tank. Dividing the board diagonally, connecting the divided wave-making boards by swingable connecting parts, and swinging the divided wave-making boards in the front and rear direction at the bottom of the water tank and / or at the connecting parts to make waves. The upper part of the plate is operable in a snake shape.

Further, the wave-making plate is substantially formed of any one of an isosceles triangular shape, a triangular shape, and a trapezoidal shape. In addition, the wave-making plates can be connected by a link, and a gap preventing plate portion can be provided between the wave-making plates to prevent water from entering.

[0008]

FIG. 7 is a perspective view of the overall construction of the wave making device of the present invention, and the operation will be described with reference to FIG. In the figure, a wave-making plate (P) has two types of triangular-shaped wave-making plates continuously arranged in a row in a horizontal direction and is swingably attached to the bottom of a water tank. In this wave making plate, adjacent triangular bases are alternately arranged on the upper side (Up) and the lower side (Dn).
The main wave-making plate (Pm) whose bottom is disposed at the bottom of the lower (Dn) water tank and the connection wave-making plate (Pc) whose bottom is disposed at the upper side (Up) are connected to each other by a connecting portion (Ca). ) So that they can swing freely. Further, the connecting wave-making plate (Pc) and the adjacent main wave-making plate (Pm) are connected by a swingable link (R), and the surface (Q) of the wave-making plate in contact with the still water surface is connected. The portion (Ca) and the gap preventing plate portion (Ba) are continuously arranged with a small step.

As shown in FIG. 8, in the wave-making device, all the wave-making plates P can be swung in the front-rear direction integrally with the bottom of the water tank by the integral operation (Fa) of the cylinder (Cy). It is. Further, as shown in FIG. 9, the connected wave plate (Pc) is connected to each cylinder (Cy) by an operation (arrow F).
s), it is connected to the main wave plate (Pm) so as to be able to swing obliquely forward or backward. For this reason, the connection wave-making plate (Pc) and other main wave-making plates (Pma)
Is added to and subtracted from the main wave-making plate (Pm) that is swingably attached to the bottom of the water tank, and further swings to operate the upper part (Y) of the wave-making plate P in a snake shape. As a result, the entire wave plate P swings (Fa) integrally in the front-rear direction, so that the wave plate P is used as a main-type wave plate as shown in FIG. 8 or FIG. Also, the connected wave-making plate Pb is added and subtracted and oscillates, so that the wave in a water area having a deeper water depth than the wavelength of the wave, that is, as the motion of the water particle approaches the water bottom by elliptical motion, the elliptical shape becomes larger. The speed of the waves is such that the movement is small. Further, at this time, the wave can generate a wavelength (Wa) of the wave inclined with respect to the wave-making plate as shown in FIG.

In addition, compared to the conventional wave-making plate having a step formed in a stepped shape, the wave-making plate has no step and is continuous, so that the ring wave generated near the step edge is prevented. And a continuous wave can be generated.

A gap preventing plate portion (Ba) is provided between the wave-making plates.
Is provided, water can be prevented from entering, and a step can be reduced, and a wave-making plate connected in a broken line shape having continuity can be obtained. In addition, while maintaining the principal motion in the depth direction, it has a wave-making plate connected in a polygonal line with more continuity in the width direction of the wave, and a three-dimensional wave suitable for the actual ocean What happens is done.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the wave making device according to the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a partial plan view of a wave making device according to a first embodiment of the present invention, FIG. 2 is a partial front sectional view of the wave making device, and FIG. 3 is a side view.

In FIG. 1 or FIG.
The wave-making plate portion 10 swingably attached to the bottom 3 </ b> A of the water tank 3, the link portion 40 connecting the wave-making plate portions 10 provided on both sides, and the wave-making plate portion 10. The gap prevention plate 50 is provided between the gap prevention plate 50 to prevent water from entering, and a driving device 60 for driving the wave-making plate 10.

The wave-making plate portion 10 is composed of a plurality of triangular wave-making plates 10A, and is arranged side by side in a row in the horizontal direction and is swingably attached to the bottom 3A of the water tank 3. I have.

The link portions 40 are arranged on each of the wave-making plates 10A, and absorb without any strain even if the adjacent wave-making plates 10A swing (snake) and fluctuate in the height direction. .

The driving device 60 is provided for each wave-making plate 10
A, and receives power from a drive source (not shown) to swing the upper part of the wave plate 10 into a snake shape.

The wave-making plate portion 10 includes a main wave-making plate portion 11 and a connection wave-making plate portion 13 of a wave-making plate 10A having two types of triangular shapes.
And a wave-making-plate connecting portion 15 that connects the main wave-making plate portion 11 and the connection wave-making plate portion 13. Wave plate 10A
The main corrugated plate portion 11 has a bottom side disposed on the lower side and is swingably attached to the bottom portion 3A of the water tank 3. In addition, the bottom of the connection wave-making plate portion 13 which is arranged adjacent to the main wave-making plate portion 11 and connected by the wave-making plate connecting portion 15 is disposed on the upper side.

The main corrugated plate portion 11 has a main corrugated plate bracket 17 (hereinafter referred to as a main bracket 17) fixed to the bottom 3A of the water tank 3, and the main bracket 17 is provided with a support shaft 19 and Main corrugated plate 2 via main corrugated plate bearing 21
3 is swingably supported. Both ends of the support shaft 19 are inserted into and supported by the holes 17 a of the main bracket 17. The main wave-making plate bearing 21 has an outer diameter portion inserted into the main wave-making plate 23 and a support shaft 19 loosely fitted into the inner diameter portion. The main wave-making plate 23 is formed in a substantially isosceles triangular shape, and a main wave-making plate bearing 21 is inserted and fitted to the lower bottom thereof so as to be swingable.

Further, the main wave-making plate 23 is provided above and below one end side (Ms) of the oblique side with the connecting portion bearing 2 of the wave-making plate connecting portion 15.
The connecting portion bearing 25 supports the connecting wave-making plate 27 by the inserted connecting shaft 29 in a swingable manner. The connection portion bearing 25 includes a flange 25 a and a bearing portion 2.
5b. The flange 25 a of the bearing 25 for the connection portion receives the weight of the connection wave-making plate portion 13. The flanged connection portion bearings 25 are disposed at two positions on both ends to receive the weight of the connection wave-making plate 27 and transmit the weight to the main wave-making plate 23. The weight of the connection wave-making plate 27 is supported by the main bracket 17 via the main wave-making plate 23 and the support shaft 19.

The connecting wave-making plate 27 is formed in a substantially isosceles triangular shape, and two connecting holes 31 for inserting the wave-making plate connecting portion 15 are formed in its oblique side. The connection wave-making plate 27 is formed by two projections 33a and 33b of the main wave-making plate 23.
It is engaged at the point. The connection wave-making plate 27 is connected to the connecting portion bearing 25 provided at the engaging portion of the projecting portions 33a and 33b.
, And is supported swingably while receiving weight.

The support shaft 19 and the connecting shaft 29
A shaft locking member 35 is attached to prevent slipping out. The rod bracket 23Br of the driving device 60 is formed integrally with the upper end of the main wave-making plate 23. A first linking bracket 37 connected to the link portion 40 is fixedly provided at one end above the main wave-making plate 23. The main wave-making plate 23 is formed in a pair with the connection wave-making plate 27 in a substantially parallelogram shape.

As shown in FIG. 3, the link portion 40 is fixed to the main wave-making plate bracket 41 fixed to the first linking bracket 37 of the main wave-making plate 23 and to the connection wave-making plate 27. And a link member 45 for connecting the main wave-making plate bracket 41 and the connection wave-making plate bracket 43 to each other. The link member 45 is
A link 45a having a spherical portion and a link 45a having a spherical portion
And a pressing member 45b which is slidably engaged with the holding member 45b. As a result, the connection wave-making plate 27 is
When swings, the height position of the connection wave-making plate 27 changes, but by connecting with the link member 45 having a spherical portion, the force can be transmitted without prying.

In the above embodiment, the link member 45 is formed by processing a spherical portion on the link 45a. However, the bracket 41 for the main wave-making plate and the bracket 43 for the connection wave-making plate are pillow-type bearings or balls. A bearing unit may be used, and the bearing unit may be connected by a rod.

The gap preventing plate 50 is, as shown in FIG.
A flexible plate 51 fixed to the wave plate 23;
And a clamping member 53 fixed to the connection wave-making plate 27. The flexible plate 51 includes a clamping member 53.
To prevent water intrusion. Further, the flexible plate 51 is deformed in accordance with the relative angle between the main wave-making plate 23 and the connection wave-making plate 27 when the wave making device 1 swings in a snake shape. Further, the flexible plate 51 slides between the sandwiching members 53 that are sandwiched in accordance with the relative positions of the main wave-making plate 23 and the connection wave-making plate 27.

As shown in FIG. 3, the driving device 60 includes a bottom bracket 61, a driving electric motor 63, and a driving actuator 65. The bottom bracket 61 is attached to the upper surface 3D of the water tank 3. A drive actuator 65 is attached to the bottom bracket 61, and the drive actuator 65 is driven by a drive electric motor 63. In this drive actuator 75, one end of a rod 67 is attached to a rod bracket 23 Br of the main corrugated plate 23 by a rod pin 69, and
The bottom side is swingably attached to the bottom bracket 61, respectively. Thereby, even if the main wave-making plate 23 swings in the front-rear direction with respect to the water tank 3, the main wave-making plate 23 can be operated by the drive actuator 65 without prying.

The operation of the embodiment of the wave making device 1 configured as described above is as follows. In the wave-making apparatus 1, electric power is supplied from a power supply (not shown) by a driving electric motor 63, and each driving actuator 65 operates in the vertical direction in FIG. 1.
In the plan view of FIG. 1, the drive actuator 65 expands and contracts by a predetermined amount in the illustrated vertical direction, swings the wave plate 10A, and the upper portion of the wave plate 10A performs a snake-shaped movement. For example, in FIG.
Sequentially from Aa, the second wave-making plate 10Ab, the third wave-making plate 10A
In the same manner, the other components are attached from the left side like the first drive actuator 65a, and
Will be described second with b.

First, it is assumed that the first wave-making plate 10Aa is arranged in parallel with the water tank wall surface 3B without swinging. At this time, power is not supplied to the first drive electric motor 63a of the first drive actuator 65a, and the first wave-making plate 10A
a and a predetermined length La such that the water tank wall surface 3B is parallel to the water tank wall 3B.
Is kept. Similarly, the second drive actuator 65
No electric power is supplied to the second driving electric motor 63b, and the predetermined length La is maintained. Further, power is supplied to the third drive electric motor 63c of the third drive actuator 65c, and the third drive electric motor 63c is reduced by a predetermined amount to have a length Lc. Thus, the first wave-making plate 10Aa is parallel to the water tank wall surface 3B without receiving the force from the first drive actuator 65a and the second drive actuator 65b. That is, the first main wave-making plate 23a of the first wave-making plate 10Aa is parallel to the water tank wall surface 3B without receiving the force of the first drive actuator 65a. Similarly, the first connection wave-making plate 27a of the first wave-making plate 10Aa does not operate the first drive actuator 65a and the second drive actuator 65b, so the first link portion 40
No longer receives the force via a, and it is parallel to the tank wall 3B.

Similarly, the second main wave-making plate 23b of the second wave-making plate 10Ab is parallel to the water tank wall 3B without receiving the force of the second drive actuator 65b. However, the second connection wave-making plate 27b of the second wave-making plate 10Ab includes:
The reduction force of the third drive actuator 65c operates via the second link 40b. Therefore, the second connection wave-making plate 2
7b swings with respect to the second main wave-making plate 23b at the second wave-making plate connecting portion 15b, and tilts toward the water tank wall surface 3B (the lower side in the figure).

The fourth driving actuator 65d and the fifth driving actuator 65e have a fourth driving electric motor 63d and a fifth driving electric motor 63d respectively.
e is supplied with electric power, and is extended to a predetermined extended length Ld by the fourth drive actuator 65d, and further extended to a predetermined extended length Le by the fifth drive actuator 65e. Thereby, the third main wave-making plate 23c of the third wave-making plate 10Ac receives the contracting force of the third drive actuator 65c, and the third support shaft 19c as a fulcrum on the side of the water tank wall surface 3B (the lower side in the figure). To tilt.

On the other hand, the third wave-making plate 10Ac
The connection drive plate 27c has a fourth drive actuator 65d.
Act | operate via the 3rd link part 40c. Therefore, the third connection wave-making plate 27c swings with respect to the third main wave-making plate 23c at the third wave-making plate connecting portion 15c, and swings toward the still water side (upper side in the drawing).

The fourth main corrugated plate 23d of the fourth corrugated plate 10Ad
Receives the extension force of the fourth drive actuator 65d,
It swings toward the still water side (upper side in the drawing) with the fourth support shaft 19d as a fulcrum. Similarly, the extension force of the fifth drive actuator 65e operates on the fourth connection wave-making plate 27d of the fourth wave-making plate 10Ad via the fourth link portion 40d. Therefore, the fourth connection wave-making plate 27d swings with respect to the fourth main wave-making plate 23d at the fourth wave-making plate connecting portion 15d, and swings toward the still water side (upper side in the drawing).

The fifth main wave-making plate 23e of the fifth wave-making plate 10Ae
Receives the extension force of the fifth drive actuator 65e,
It swings to the still water side (upper side in the drawing) with the fifth support shaft 19e as a fulcrum. Similarly, the extension force of the sixth drive actuator 65f is applied to the fifth connecting wave-making plate 27e of the fifth wave-making plate 10Ae via the fifth link 40e. For this reason, the fifth connection wave-making plate 27e is integrated with the fifth main wave-making plate 23e without swinging at the fifth wave-making plate connecting portion 15e, and the fifth support shaft 19e is used as a fulcrum. It swings to the still water side (upper side in the figure).

In the above operation, the right wave-making plate 10A (not shown) is also operated while being controlled in the same manner. As shown in FIG. The main wave-making plate 23 is swung in the left-right direction as shown, and the connected connection wave-making plates 27 are also swung together. Thereby, it is arrange | positioned under the liquid level of the water tank 3, and the bottom 3A
As shown in FIG. 7, a snake-shaped swing operation is performed on the upper part of the wave-making plate portion 10 which is swingably attached to the wave-making plate portion 10. At this time, the height of the connecting wave-making plate 27 is different by swinging with respect to the main wave-making plate 23. However, since the connection wave-making plate 27 is connected by the link portion 40 having the spherical portion, the difference in height is adjusted by absorption adjustment. As a result, a smooth snake-shaped swing is performed. Further, since the main wave-making plate 23 and the connection wave-making plate 27 are connected with a reduced level difference, the wave-making device 1 can generate a continuous wave. In addition, the main wave-making plate 23 and the connection wave-making plate 27 are both swung by the support shaft 19 and the wave-making plate connecting portion 15, so that the vertical water flows into the still water in contact with the wave-making plate 10. Give the speed of the particles. This speed is small near the bottom surface of the main wave-making plate 23 and the connection wave-making plate 27, and a main motion which increases as approaching the liquid level is obtained.

FIG. 4 is a partial plan view of a wave making device according to a second embodiment of the present invention, FIG. 5 is a partial front sectional view of the wave making device, and FIG. 10 is a side view. Components having the same functions as those of the first embodiment are denoted by the same reference numerals, and description thereof is omitted. Also, although the functions are the same, the parts that are described separately are 1
Displayed with 00s.

In the first embodiment, the main wave-making plate 23 and the connection wave-making plate 27 are formed in a substantially isosceles triangle shape, and the bottom of the main wave-making plate 23 is located on the lower side (the bottom 3A of the water tank 3).
In addition, the bottom side of the connection wave-making plate 27 is disposed on the upper side, and the pair is formed in a parallelogram shape.
In addition, a connecting portion bearing 25 is inserted into the wave-making plate connecting portion 15 between the main wave-making plate 23 and the connection wave-making plate 27 above and below one end (Ms) of the hypotenuse. The part bearing 25 is formed of a flanged bearing composed of a flange 25a and a bearing part 25b. The flange 25 a of the connection portion bearing 25 receives the weight of the connecting wave-making plate portion 13 and transmits the weight to the main wave-making plate 23. The weight of the connection wave-making plate 27 is supported by the main bracket 17 via the main wave-making plate 23 and the support shaft 19.

On the other hand, in the second embodiment shown in FIG. 4 or FIG. 5, the main wave-making plate 123 and the connection wave-making plate 127 are
The main corrugated plate 12 is formed in a substantially trapezoidal shape.
3 and a connection wave-making plate 127 are formed in a quadrangular shape among parallelograms. Connecting part 1 for wave making plate on the hypotenuse
Fifteen connection portion bearings 125 are inserted and connected to the wave-making plate 127.
Is swingably supported. The main wave plate 123 is fixedly provided with a shaft locking member 135 for preventing the support shaft 19 and the connection shaft 29 from coming off. A rod bracket 123Br of the driving device 60 is fixedly provided on the water tank wall surface side (3B) of the main corrugated plate 123.

The connection wave-making plate portion 113 has a connection wave-making plate bracket 71 (hereinafter, referred to as a connection bracket 71) fixed to the bottom 3 A of the water tank 3. Support base 71a fixed to 3A
And a bearing ball portion 71b attached to the lower surface of the connection wave-making plate 127 and swingably and rotatably supporting the connection wave-making plate 127; and a bearing ball portion 71b and the connection wave-making plate 127. The holding member 73 to be attached is formed.

The connection wave-making plate 127 is formed in a trapezoidal shape, and on its lower surface, the bearing ball portion 7 of the connection bracket 71 is provided.
There is provided a spherical recess for holding 1b. The bearing ball portion 71b has a spherical core disposed at the intersection (K) on the extension of the support shaft 19 and the connection shaft 29, so that the connection wave plate 127 can easily swing and rotate. I have. Further, the connecting portion 11 for wave-making plate is provided on the oblique side of the connection wave-making plate 127.
5 is provided with one connection hole 131.

The connecting wave-making plate 127 is swingably connected to the main wave-making plate 123 by the wave-making plate connecting portion 115 as described above, and a pair of the wave-making plates is formed into a quadrangle of a parallelogram. Is formed. For this reason, the main wave-making plate 123 and the wave-making plate connecting portion 115 are connected with a reduced level difference. As a result, the wave-making plate portion 10 swings around the support shaft 19 and operates the wave-making plate connecting portion 115 connected with a reduced level difference to generate continuous waves. Can be.

The connecting portion 115 for a wave-making plate includes a connecting shaft 29,
And a shaft locking member 135 for preventing the connection shaft 29 from coming off. Connecting part 115 for wave plate
Is inserted from the connection hole 131 of the connection wave-making plate 127,
The main wave-making plate 123 is loosely fitted to the connecting portion bearings 125 disposed at both ends of the oblique side of the main wave-making plate 123, and swingably supports the connection wave-making plate 127. Therefore, the connection wave-making plate 127 is swingably and pivotally supported by the connection shaft 29 supported by the connection portion bearing 125 and the bearing ball portion 71 b of the connection bracket 71.

The driving device 60 includes a bottom bracket 61.
, Drive device pin 163 and drive actuator 16
5, a rod 67 and a rod pin 69. The drive actuator 165 has the rod 67 attached to the rod bracket 123Br of the main corrugated plate 123 by the rod pin 69, and the bottom side attached to the upper surface 3D of the water tank 3 by the bottom bracket 61, and is attached swingably. ing. Thereby, even if the main wave-making plate 123 swings in the front-back direction with respect to the water tank 3, the main wave-making plate 123 can be operated by the drive actuator 165 without prying. The drive actuator 165 operates by receiving pressure oil from a hydraulic source (not shown) switched by an electromagnetic switching valve. The electromagnetic switching valve is sequentially switched by a command from a controller (not shown),
As shown in FIG. 7, the upper part of the wave-making plate portion 10 which is disposed below the liquid level and is swingably attached to the bottom portion 3A performs a snake-shaped swinging operation.

The operation of the other wave making device 1A configured as described above operates in the same manner as described above, and therefore, the description is omitted. In the second embodiment, the main shaft plate 123 is provided with the support shaft 1.
9 and a trapezoidal shape, and connected to the drive actuator 165 to swing the main wave plate 123.
The main corrugated plate 123 is formed in a triangular shape,
3 may be connected to a drive actuator 165 to swing. Further, the drive actuator 165 may be another fluid such as air pressure.

[0043]

As described above, in a water tank experiment having a relatively deep water depth compared with the wavelength of the wave to be tested in the field of shipbuilding, etc., it is considered that a main motion type wave plate matching the motion of water particles is suitable. Have been. Conventionally, for this purpose, the number of wave-making plates has been increased and the width of the wave-making plate has been reduced as much as possible, thereby reducing steps and obtaining a smooth wave-making surface. On the other hand, in the wave making device of the present invention, a triangular wave making plate or a parallelogram is diagonally divided, and the divided wave making plates are swingably connected to each other. Further, the connected wave-making plates are arranged side by side with a small step on the surface of the wave-making plate in contact with the still water surface. In addition, the main wave-making plate and the connection wave-making plate are both swung by the support shaft and the wave-making plate connecting portion, so that the velocity (V) of the water particles in the vertical direction in the still water in contact with the wave-making plate. give. This velocity is small near the bottom surface of the main wave-making plate and the connection wave-making plate, and a main motion that increases as approaching the liquid level is obtained. Adjacent wave-making plates are connected by swingable links. For this reason, the ring wave generated near the step edge portion can be prevented as compared with the conventional wave plate having the step formed in the step shape, and the wave having the three-dimensional direction can be more accurately detected. In addition, a continuous wave can be generated more economically.

[Brief description of the drawings]

FIG. 1 is a partial plan view of a wave making device according to a first embodiment of the present invention.

FIG. 2 is a front partial cross-sectional view of the wave making device according to the first embodiment of the present invention.

FIG. 3 is a partial side view of the wave making device according to the first embodiment of the present invention.

FIG. 4 is a partial plan view of a wave making device according to a second embodiment of the present invention.

FIG. 5 is a front partial cross-sectional view of a wave making device according to a second embodiment of the present invention.

FIG. 6 is a partial side view of a wave making device according to a second embodiment of the present invention.

FIG. 7 is a perspective view of the entire configuration of the wave making device of the present invention, illustrating the operation of the wave making device.

FIG. 8 is a diagram illustrating the operation of the wave making device of the present invention.

FIG. 9 is a diagram for explaining the operation of the wave making device of the present invention.

FIG. 10 is a schematic side view of the conventional wave making device according to the first embodiment.

FIG. 11 is a schematic side view of a conventional wave making device according to a second embodiment.

FIG. 12 is a perspective view of a conventional wave making device according to a third embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 1A Wave-making device 3 Water tank 10 Wave-making plate part 10A Wave-making plate 11 Main wave-making plate part 13 Connection wave-making plate part 15 Connection part for wave-making plate 17 Bracket for main wave-making plate 19 Support shaft 21 Main wave-making Plate bearing 23 Main wave-making plate 25 Bearing for connecting part 27 Connection wave-making plate 29 Connection shaft 30 Connection wave-making plate part 37 Bracket for connection wave-making plate 40 Link part 41 Bracket for main wave-making plate 43 For connection wave-making plate Bracket 45 Link member 50 Gap preventing plate portion 51 Flexible plate 53 Nipping member 60 Driving device 63 Driving electric motor 65 Drive actuator 101 Main first wave plate 103 First connecting portion bearing 105 Connection first wave plate

Claims (4)

[Claims] 1. A wave-making apparatus for generating a wave inside a water tank by oscillatingly attaching a wave-making plate to the bottom of a water tank, wherein the bottoms of adjacent triangular wave-making plates are alternately arranged vertically. A wave-making device characterized by being arranged. 2. An adjacent triangular wave plate is swingably connected by a connecting portion, and the wave plate is oscillated in the front-rear direction to operate in a snake shape at an upper portion of the wave plate. The wave-making device according to claim 1, wherein 3. A wave-making apparatus for arranging parallelogram-shaped wave-making plates adjacent to each other in a row and swingably attaching to a bottom of a water tank to generate waves inside the water tank. Divide the board diagonally into a trapezoidal shape, connect the divided wave-making boards with swingable connecting parts, and divide the wave-making boards into the bottom of the water tank,
And / or a wave making device that swings back and forth at a connecting portion to operate in a snake shape above a wave making plate. 4. A link between the wave-making plates with a link,
The wave making device according to any one of claims 1 to 3, wherein a gap preventing plate portion is provided between the wave making plates to prevent water from entering.