JP3364084B2 - Wave making equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wave making device for a test water tank, and more particularly to a wave making device capable of generating a wave suitable for an actual sea area.

[0002]

2. Description of the Related Art Generally, a wave-making device is used for a water tank test of ships and marine structures. Conventionally, as this type of wave-making device, one shown in FIG. 6 has been known. That is, in FIG. 6, reference numeral 1 denotes a wave-making plate which is juxtaposed in one direction and moves forward and backward, and has a wave-making surface 2 at a front end face thereof. By advancing and retreating with and, the wave W can be generated toward the diagonally front part of each wave-making plate 1.

By the way, in the above-mentioned wave-making device, since the wave-making surface 2 is formed only by the wave-making plate 1, when the wave-making plates 1 are independently moved forward and backward, as shown in FIG.
As shown in FIG. 3, a step 3 is formed between two corrugated plates 1a and 1b adjacent to each other, and as a result, the edge portion 3a of the step 3 is formed.
There is a problem that the ring wave 4 is generated in the vicinity and the reliability in wave formation is lowered. Further, the fact that the wave-making surface 2 is formed only by the wave-making plate 1 means that the angle of the generated wave in the traveling direction (a line that coincides with the advancing / retreating direction of the wave-making plate 1 is used as a reference line, and the reference line and the traveling direction of the wave). Angle formed by the line that matches
When it is set to a wide range, it is necessary to set the unit width of the wave-making plate 1 to a small size and bring the wave-making surface 2 as close as possible to a smooth continuous surface. There is also a problem that the number of parts such as a drive device for the wave-making plate 1 increases and the cost increases.

As a wave-making device that copes with such a problem, a wave-making device as disclosed in Japanese Patent Publication No. 6-70598 is provided. This wave forming device will be described with reference to FIGS. 8 to 10. In FIGS. 8 to 10, reference numerals 11, 11A, 11B, 11C, 11 are used.
Reference numeral D designates a pin receiving metal fitting which is moved forward and backward by each drive arm 12, and a large number of pin receiving metal fittings 11 are arranged in parallel in a horizontal direction at a predetermined interval. A long hole 13 extending in the lateral direction is provided on one side of the front end of each pin receiving bracket 11.
On the other side, a pin hole 114 that opens in the vertical direction is provided.

Reference numerals 15, 15A, 15B, 15C, and 15D denote wave-making plates that oscillate in the front-rear direction, and are connected to two mutually adjacent pin receiving fittings 11, for example, pin receiving fittings 11A and 11B. ing. These wave-making plates 15 are rectangular wave-making plates in which one connecting portion slides in the direction in which the pin receiving metal fittings 11 are arranged in parallel, and the other connecting portion rotates about an axis extending in the vertical direction. It is composed by. That is, a pin 16 as one connecting portion that slides in the elongated hole 13 is integrally provided on one side upper and lower end surface of each wave-making plate 15, and is pivotally supported by the pin hole 14 on the other side upper and lower end surface. The pin 17 is integrally provided as the other connecting part.

A plate receiving hole 118 that is open in one direction is provided on one end surface of the wave making plate 15. Code 119
Shows a large number of flexible seal plates made of, for example, fiber reinforced plastic. One end of this flexible plate 119 is fixed to the wave-making plate 15B by a screw 20, and the other end is adjacent to the wave-making plate 15B. Corrugated sheet 15
It is provided so as to be freely inserted into and removed from the plate receiving hole 118 of A. The flexible seal plates 119 are configured to close the gap between the two wave-making plates 15A and 15B adjacent to each other in the wave-making plate 15.

Reference numeral 21 indicates a large number of guide rails extending in the front-rear direction. Each guide rail 21 is provided on a base 22 at a predetermined interval in the direction in which the pin receiving fittings 11 are arranged in parallel, and is driven. It is configured to guide the arm 12 via a slide bearing 23. Reference numerals 24 and 25 denote pulleys arranged side by side at a predetermined interval in the front-rear direction, and reference numeral 26 denotes a servo motor stretched between the pulleys 24 and 25.
A toothed belt for transmission driven by 27, and a reference numeral 28 indicates a metal member for fixing the drive arm 12 to the belt 26, and the reciprocating drive mechanism 14 is constituted by the members indicated by reference numerals 21 to 28. There is. Reference numeral 29 indicates a sensor that detects the rotational position of the front pulley 24 of the pulleys 24 and 25.

In the wave-making device constructed as described above,
Each drive arm 12 by shifting the rotation phase of each servo motor 27
When each of the pin receiving brackets 11 is moved back and forth by the steps shown in FIG.
As shown in (c), the wave-making plates 15A to 15D oscillate in the front-rear direction and the flexible seal plates 119a to 119a-1.
19d moves forward and backward with respect to the wave-making plates 15A to 15D to generate waves. At this time, since the wave-making plate 15 and the flexible seal plate 119 form a continuous wave-making surface forward, no ring wave is generated in front of the wave-making plate 15 and the flexible seal plate 119.

[0009]

By the way, in the wave making device described in Japanese Patent Publication No. 6-70598, the flexible plate 119 is provided with the plate receiving holes 118 of the respective wave making plates 15.
When the flexible plate bends, the flexible plate catches on the edge of the plate receiving hole of the wave making plate and is not drawn into the plate receiving hole quickly, which allows smooth movement of the wave making plate. There is a problem that it is hindered or the flexible plate is damaged. The present invention aims to provide a wave-making device which solves these problems.

[0010]

[Means for Solving the Problems ]
Therefore, the wave-making device of the present invention is provided with a large number of pin receiving fittings that are juxtaposed in the lateral direction of the water tank at predetermined intervals in the horizontal direction and that can advance and retreat in the front-rear direction.
One pin receiving metal fitting is provided with a large number of wave-making plates each of which is connected at both ends, and
Are gaps respectively formed between, and allowed Shiwamaku is provided that requires lock respectively the gaps described above, one end of each wave-plates move sliding in the arrangement direction of the pin pivot bracket And a pin receiving bracket adjacent to the pin receiving bracket whose one end is rotatably connected to the pin receiving bracket while the other end is rotatable about the vertical axis. is connected to the same respective flexible membrane to hold circular cylinder that is wound on hear Shiwamaku is the same each flexible membrane with rotatably provided above the pin receiving brackets always tension state; It is characterized in that each of the cylindrical bodies is provided with an urging means for urging them in the winding direction.

Further, one end of each of the flexible membranes is wound around the cylindrical body, and the other end is connected to a pin receiving metal fitting provided with the cylindrical body at one end thereof. It is fixed to the section to solve the problem.

[0012] In addition, and the cylinder as a means of solving the problems by forming the biasing means by function as a torsion bar an axis rotatably supported in the pin pivot bracket.

In the wave-making device of the present invention, when a large number of wave-making plates are moved in a snake-like manner like a snake, the gap between the wave-making plates varies. However, when the gap is opened, the flexible film that closes the gap between the wave-making plates is fed out from the cylindrical body, and when the gap is narrowed, the flexible film is automatically wound up on the cylindrical body, and the flexible film is always bent without bending. The gaps between the corrugated sheets can be covered.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION A wave-making device according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of a main part thereof, FIG. 2 is a sectional view taken along the line A--A of FIG. Figure 3
(a) to (e) are schematic plan views for explaining the operation, FIG. 4 is a plan view of a test water tank equipped with the wave making device of FIG. 1, and FIG. 5 is B of FIG.
FIG. 6 is a sectional view taken along arrow B. 1 to 5, the same reference numerals as those in FIGS. 6 to 10 indicate almost the same members.

The wave-making device of this embodiment, like the above-mentioned conventional example (Japanese Patent Publication No. 6-70598), has a large number of wave-making plates 15 on one side of the test water tank 10 along the width direction. Are connected to each other, and these wave-making plates 15 are operated by the reciprocating drive mechanism 14.

As the reciprocating drive mechanism 14, a hydraulic piston device is used in this embodiment, but it goes without saying that the reciprocating drive mechanism including the servo motor 27 and the like as in the above-mentioned conventional example may be used. Further, the wave-making plate 15 located at both ends and the inner wall of the test water tank 10 are rotatably pivoted.

In FIGS. 1 and 2, reference numeral 11 indicates a pair of upper and lower pin brackets as a supporting member for the wave-making plate 15. The pin bracket 11 is the front surface of the drive arm 12 (right side in FIG. 1, test). (From the inside of the aquarium 10). A reciprocating drive mechanism 14 is connected to the drive arm 12.

A large number of drive arms 12, that is, pin receiving fittings 11, are arranged side by side along one side of the test water tank 10 at predetermined intervals in the lateral width direction.

A long hole 13 extending in the lateral direction (a direction in which the pin receiving fittings 11 are arranged in parallel) is provided on one side of the front end portion of each pin receiving fitting 11, and a shaft 30 as a torsion bar is provided on the other side. Mounted vertically. The shaft 30 has upper and lower end portions 30a, 30
b are fixed to a pair of upper and lower pin receiving fittings 11, respectively. Further, a cylindrical body 31 rotatable about the shaft 30 is provided between the upper and lower pin receiving fittings 11 (see FIG. 2).

A bent portion 30c is formed at an intermediate portion of the shaft 30, and the bent portion 30c is fixed to the inner surface of the cylindrical body 31. With this structure, the shaft 30 and the cylindrical body 31 rotate around the shaft 30. It functions as a torsion bar that generates a restoring force when twisted. In addition to the structure in which the shaft 30 has a function as a torsion bar, a coil spring for restoring may be attached to the cylindrical body 31.

Each of the wave-making plates 15 is formed in a rectangular shape as viewed from the front, and is mounted between the pin receiving fittings 11 arranged adjacent to each other with the following structure. Ie corrugated plate 15
A (for convenience of explanation, the supplementary symbols A, B, C are attached to the specific wave plate.
Attach. The same applies to the following), the left end 15a (the left end when the wave making plate 15 is viewed from the rear) is the long hole of the pair of upper and lower pin receiving fittings 11A.
An arm 111B of a pair of upper and lower pin receiving fittings 11B, which is rotatably attached to a pin 16A slidably arranged on 13A, and whose right end portion 15b is located right next to the pin receiving fitting 11A.
Is rotatably attached to the pin via pin 17B.

A flexible film 32A is wound around the outer circumference of the cylindrical body 31A. The flexible film 32A has one end fixed to the cylindrical body 31A and the other end fixed to the left end 15a of the wave making plate 15A. The flexible film 32 is formed to have substantially the same depth as the wave making plate 15.

Each pin receiving member 11 is associated with each drive arm 12
The reciprocating drive mechanism 14 is connected to each drive arm 12 attached to the front end of the drive arm 12. The arrow 35 indicates the direction in which the reciprocating drive mechanism 14 advances and retracts the drive arm 12.

In the above-mentioned structure, when the reciprocating drive mechanism 14 causes each drive arm 12 to advance and retreat under a predetermined phase difference (similar to the conventional wave forming device shown in FIGS. 8 to 10), The wave-making plate 15 also swings in the front-back direction.

At this time, for example, the wave-making plate 15A is moved to the front (to the right in FIG. 1) by the drive arm 12A at its left end before the right end attached to the drive arm 12B. 15A has the inclination shown in FIG. 1 in which the left end portion 15a precedes the right end portion 15b, and the wave-making plate 15A has the same function.
B and 15C also have the inclination shown in FIG.

During this operation, in the wave-making plate 15A, the right end portion 15b moves forward around the pin 111B,
The pin 16A supporting the left end portion 15a moves forward while sliding in the elongated hole 13A, and the left end portion 15a and the arm 111A.
With the right end of the corrugated plate 15C adjacent to the left side.

In this way, the adjacent wave-making plates 15A and 15C
When the gap between the ends of the flexible film 32A is opened, the flexible film 32A is pulled out. The cylindrical body 31A is rotated by pulling out the flexible film 32A, and the shaft 30 as a torsion bar is twisted.

When the drive arm 12A is retracted,
When the gap between the end portion and 15C becomes narrower, the cylindrical body 31A rotates in the opposite direction by the restoring force of the torsion bar action of the shaft 30, and the flexible film 32A is wound up. In this way, the flexible film 32 acts so as to cover the gap between the end faces between the adjacent wave-making plates 15 in a tension state without being always bent.

FIGS. 3 (a) to 3 (e) show the operation of the pin receiving metal fitting 11A over time, and the pin receiving metal fitting 11A is (a) → (b).
→ (c) → (d) → (e) → (d) → (c) → (b) → (a)
As the plurality of wave-making plates 15A and 15C arranged adjacent to each other by repeating forward and backward movements, the pin receiving fittings of each wave-making plate move forward and backward with a constant phase difference, as shown in FIG. It will exhibit a snake-like movement.

In the wave-making device constructed as described above, the wave-making plate 15 and the flexible seal plate are made by moving the pin receiving metal fitting 11 back and forth by the drive arm 12.
Since a continuous wave-making surface can be formed in the front by 19, the ring wave does not occur in front of the wave-making plate 15.

In the present embodiment, the fact that the wave-making surface is made continuous by the wave-making plate 15 swinging in the front-back direction and the flexible film 32 stretched between the wave-making plates 15 means that the generated wave is continuous. When the traveling direction angle is set to a wide range, the number of parts such as the corrugated plate 15 can be reduced as compared with the case of the conventional example. It should be noted that both ends of each wave-making plate 15 may be wound around the cylindrical body 31, and in this case, the cylindrical body can have a small diameter.

4 and 5 show a test water tank 10 to which the above-mentioned wave-making device is attached. Reference numeral 28 is a mount of the reciprocating drive mechanism 14, and reference numeral 30 is a water splash-preventing plate generated on the back of the wave-making plate 15. To
Reference numerals 32 respectively indicate the columns of the gantry 28. further,
On a side portion of the water tank facing the front surface of the wave-making plate 15, a wave-dissipating plate 34 is slanted over the entire length in the width direction. This wave-dissipating plate 34 is made of a synthetic resin plate or the like as a material, and is formed by forming a large number of through holes 38 in a corrugated plate 36 having irregularities formed in a direction orthogonal to the width direction of the water tank 10. The height is adjustable. Reference numeral 40 is a dug portion which is formed substantially in the center of the water tank 10 and has a monitoring window from the outside.

[0033]

As described in detail above, according to the wave making device of the present invention, the following effects and advantages can be obtained. (1) Since a continuous wave-making surface is formed by a plurality of wave-making plates and a flexible film that closes a gap between adjacent wave-making plates, a ring wave may occur in front of the wave-making plate. Absent. (2) Since the mechanism that keeps the flexible membrane in a tensioned state is composed of a cylindrical body around which the flexible membrane is wound and a biasing means that restores the cylindrical body to the original state, the configuration is simplified and the cost is reduced. You can measure (3) The cost can be further reduced by using the support shaft of the cylindrical body as the torsion bar to function as the biasing means.

[Brief description of drawings]

FIG. 1 is a plan view of a main part of a wave making device according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

3A to 3E are schematic plan views for explaining the same operation.

4 is a plan view of a water tank equipped with the wave-making device of FIG.

5 is a sectional view taken along the line BB of FIG.

FIG. 6 is a schematic plan view of a conventional wave making device.

7 is an enlarged plan view of an essential part of the wave making device of FIG.

FIG. 8 is a perspective view of another conventional wave making device.

FIG. 9 is a plan view of the same.

10A to 10C are schematic plan views for explaining the same operation.

[Explanation of symbols]

1 Corrugated plate 2 Wave front 10 aquarium 10a bottom 11, 11A, 11B, 11C, 11D Pin bracket 12, 12A, 12B drive arm 13, 13A, 13B oblong hole 14 Reciprocating drive mechanism 15, 15A, 15B, 15C Corrugated sheet 16, 16A pin 17 pin 21 Guide rail 22 stand 24, 25 pulley 26 toothed belt 27 Servo motor 30 axes 31, 31A cylindrical body 32, 32A, 32B, 32C flexible membrane 111, 111A, 111B arms

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) G01M 10/00

Claims (3)

(57) [Claims] 1. A large number of pin brackets that are arranged side by side in the lateral direction of a water tank at a predetermined horizontal interval and that can move forward and backward, and two pin brackets that are adjacent to each other among the pin brackets. numerous wave plate and is set to the both end portions are connected
Between the corrugated plates adjacent to each other
Each A gap is formed, with variable Shiwamaku is provided that requires lock respectively the gaps described above, vertical to one end of each wave-plate One move sliding in the arrangement direction of the pin pivot bracket One end is rotatably connected to the pin receiving metal fitting while the other end is rotatably rotatable about the vertical axis. One end is connected to the pin receiving metal fitting adjacent to the pin receiving metal fitting. It is, above Symbol
Biased in a direction circular cylinder that is wound around the variable Shiwamaku is involving respectively the respective flexible membrane to hold in tension at all times each of the same respective flexible films with rotatably provided above the pin pivot bracket A wave making device, characterized in that a biasing means is provided on each of the cylinders. 2. The wave-making device according to claim 1, wherein one end of each of the flexible membranes is wrapped around the cylindrical body, and the other end is connected to a pin receiving metal fitting provided with the cylindrical body at one end thereof. The wave-making device according to claim 1, wherein the wave-making device is fixed to the end of the plate. 3. The urging means is constituted by providing a shaft for rotatably supporting the cylindrical body on the pin receiving fitting with a function of a torsion bar. or forming wave device according to 2.