JP2706137B2 - Wave making equipment - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wave making device for creating a wave in a swimming pool or a pool for viewing or storing a park.

[Prior Art] Conventionally, as this type of wave-making apparatus, as shown in FIG. 6, a vertically extending cylinder portion 1 is formed in a deep portion provided at an end of a pool, and the cylinder portion is provided. There is a type in which a piston portion 2 in 1 is repeatedly driven vertically by a hydraulic cylinder or the like.

In this wave-making device, the water in the cylinder 1 is pushed downward from above by the piston 2 so that the water in the cylinder 1 is moved downward as shown in FIG.
And then push it up to create a wave.

[Problems to be Solved by the Invention] However, in the conventional wave making device described above, the water in the cylinder portion 1 pushed downward is applied to the bottom of the pool to convert the flow upward. Therefore, energy loss was large and efficiency was poor.

In addition, since a drive mechanism for driving the piston section 2 is provided above the piston section 2, the entire apparatus is particularly large in the upward direction, and furthermore, the noise caused by the drive mechanism located on the ground causes a quiet place in a residential area or the like. There was a problem that it could not be installed at the place.

The present invention is to solve such a problem.

[Means for Solving the Problems] A wave-making apparatus according to the present invention includes a door provided at the bottom of a pool and capable of rotating a predetermined angle around a horizontal axis near one side in a wave-making direction. A surrounding wall forming a surrounding wall that covers the rotation space of the door body, and a wave forming outlet is formed on the wave-making direction side; and the door body is reciprocated by a predetermined angle around the horizontal axis. A drive mechanism to move, on the side wall of the peripheral wall structure located at both ends of the door body,
A plurality of vents opened so as to be arranged along the rotation trajectory of the door body, a plurality of vent pipes each having one end connected to each of the vents and the other end being open to the outside air, A check valve provided on the plurality of ventilation pipes, allowing air to flow from the other end to the one end of the ventilation pipe, and preventing water from flowing from one end to the other end of the ventilation pipe. It is characterized by comprising.

[Operation] The wave making device of the present invention reduces the energy loss by rotating the door body in the wave making direction,
Build waves efficiently.

In addition, by utilizing the positional relationship between the door body and the vent and the check valve, the negative pressure generated on the lower side of the door body is eliminated,
The rotation resistance of the door is reduced.

Further, by rotating the door body about a horizontal axis, the drive mechanism of the door body can be installed at a side position of the door body, thereby realizing the miniaturization of the entire apparatus particularly in the height direction. .

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

In FIG. 1, 11 is the bottom of the pool P and L is the water surface. At the end of the pool P, there is formed a flat quadrangular wave-making space S bulging rearward (upward in the figure) as shown in FIG. The periphery of the wave-making space S is surrounded by a concrete wall 12 having a U-shape in plan view, and a front upper portion (left side in FIG. 1) of a concrete block 13 having a U-shaped cross section. Is closed by. In addition, the area from the rear of the concrete block 13 (the right side in FIG. 1) to the bottom of the wave-making space S is closed by an iron plate 14 having an arc shape with a quadrant in section. The outer periphery of the iron plate 14 is reinforced by a plurality of ribs 14a. In the case of this example, the iron plate 14 is attached by bolts 15 and can be removed at the time of repair or replacement. The bottom surface on the front side of the wave making space S is continuous with the bottom 11 of the pool P, and the bottom surface on the rear side is lower by one step. In the case of the present embodiment, the bottom portion 11 of the pool P is inclined so as to descend toward the wave-making space S, and once rises at a position P1 in front of the wave-making space S, the bottom portion 11 is located closer to the front of the wave-making space S. It is continuous with the bottom.

The arrow B direction (see FIG. 1) from the wave-making space S toward the pool P is the wave-making direction, and the wave-making space S is closed except for the wave-making outlet S1 that opens on the wave-making direction B side. I have. Therefore, the concrete block 13 and the iron plate 14 form a peripheral wall structure that covers the wave-making space S. Further, a cover 16 is placed between the upper rear part of the concrete block 13 and the upper part of the concrete wall 12. A vent 16a (see FIG. 1) is formed in the cover 16 so that the space above the iron plate 14 is not sealed.

In the wave-making space S, there is provided a door 18 which rotates in the directions of arrows C1 and C2 (see FIG. 1) about a horizontal drive shaft 17 and just the front end of the door 18 is provided. The inner surface of the iron plate 14 is located along the rotation locus. Door body 18
Is a steel plate 18a on the top and a U-shaped steel plate 18
b and ribs 18c and 18d. Also,
A rubber seal member 19 seals the space between the upper surface on the base end side of the door 18 and the bottom surface on the front side of the wave-making space S.

Concrete wall 12 located on the side of the rotation space of door 18
A plurality of vents 20 arranged along the turning direction of the door 18 are opened. In the case of this example, a total of six ventilation holes 20 are opened. The lower ends of the ventilation pipes 21 extending in the vertical direction are connected to these ventilation holes 20. The upper end of the ventilation pipe 20 is open upward, and a check valve 22 is attached to a middle part of the ventilation pipe 20. As shown in FIG. 4, the check valve 22 has a configuration in which a lightweight ball 22c is vertically movably inserted between an upper valve seat 22a and a lower stitch 22b. When the air flows downward from above in the ventilation pipe 20, the ball 22 c descends as shown by the solid line in the drawing to allow the ventilation, while flowing in the ventilation pipe 20 from below to above. When the water is about to flow, it rises as shown by a two-dot chain line in the figure to close the valve seat body 22a and prevent the flow.

A control room R is formed by a concrete wall 23 at a side position of the wave making space S1, and an upper portion of the control room R is covered by a cover 24. One end of a drive shaft 17 extends into the control room R, and one end of an arm 25 is attached to one end thereof. The other end of the arm 25 and the control room R
A hydraulic cylinder 26 is mounted between the hydraulic cylinder 26 and a fixed position in the drive shaft.
17 is rotated in the range of 90 °. Also,
The hydraulic cylinder 26 is controlled by a hydraulic control unit 27 in the control room R.

 Next, the operation will be described.

By expanding and contracting the hydraulic cylinder 26 at a predetermined speed, the door body 18 rotates together with the drive shaft 17 in the directions of arrows C1 and C2 within a range of 90 °. The door 18 has a vertical position indicated by a solid line in FIG. 1 as a rotation limit position in the direction of arrow C1.
The horizontal position indicated by the dashed line is rotated as the rotation limit position in the direction of arrow C2, and when it is rotated in the direction of arrow C1, water on the door 18 is pushed out in the wave-making direction B. Then, waves are continuously formed by repeating this extrusion. This wave rises greatly at a position P1 in front of the wave-making space S, and propagates along the bottom 11 of the pool P that is inclined. In the case of this example, since the bottom 11 of the pool P is inclined, the attenuation of the wave is small.

By the way, when the door body 18 rotates in the direction of the arrow C1,
A negative pressure is generated below the door body 18 as a rotation resistance of the door body 18. However, this negative pressure is released by the ventilation pipe 21 and the check valve 22. That is, with the rotation of the door body 18 in the direction of the arrow C1, a plurality of ventilation holes 20 are positioned below the door body 18 in order from the right side in FIG. twenty one
The lower side sequentially becomes a negative pressure, and the outside air enters the lower side of the door body 18 through the check valve 22 in the ventilation pipe 21 which has the negative pressure. In addition, the ventilation port 20 located above the door body 18 receives water pressure, and the check valve 22 of the ventilation pipe 21 communicating therewith is closed to prevent leakage of water. As described above, the check valve 22 operates according to the positional relationship between the door 18 and the vent 20.

Note that a rising plate 28 with a turnbuckle as shown in FIG. 5 may be attached to the front position P1 of the wave making space S so that the swelling angle at the front position P1 can be adjusted.

In addition, the configuration of the check valve 22 is not limited to the above-described embodiment and is arbitrary, and the number of the vents 20 is also arbitrary. Further, by controlling the rotation speed and the rotation angle of the door body 18 by the hydraulic control unit 27, it is possible to produce a wave of a desired size. Further, the hydraulic control unit 27 can be installed far away by piping.

[Effects of the Invention] As described above, the wave making device of the present invention has a configuration in which the door is turned in the wave making direction to make waves, so that waves can be made efficiently, and The energy loss is extremely small as compared with the conventional system shown in FIG.

In addition, a simple structure utilizing the positional relationship between the door and the vent and the check valve eliminates the negative pressure generated below the door, thereby reducing the turning resistance of the door and further improving the efficiency. You can make waves well.

In addition, since the door body is rotated about the horizontal axis, the drive mechanism of the door body can be installed at a side position of the door body, thereby realizing miniaturization of the entire apparatus, particularly in the height direction. Can be. In addition, since the drive mechanism of the door can be installed at a low position, the drive mechanism can be embedded in the basement to prevent sound.

[Brief description of the drawings]

1 to 5 are views for explaining an embodiment of the present invention. FIG. 1 is a longitudinal sectional view of a main part, FIG. 2 is a view taken in the direction of arrow II in FIG. 1 is a sectional view taken along line III-III in FIG. 1, FIG. 4 is an enlarged sectional view of a check valve, and FIG. 5 is a side view of a raised plate with an angle adjusting mechanism. FIG. 6 is a sectional view of a main part for explaining a conventional example. 11… Pool bottom, 12… Concrete wall, 13… Concrete block, 14… Iron plate, 15… Bolt, 16… Cover, 17… Drive shaft, 18… Door, 19… Seal Material: 20… Vent, 21… Vent pipe, 22… Check valve, 23… Concrete wall, 24… Cover, 25… Arm, 26… Hydraulic cylinder, 27… Hydraulic control unit, 28 ... riser plate, P ... pool, S ... wave making space, S1 ... wave making outlet, L ... water surface.

Claims (1)

(57) [Claims] 1. A door provided at the bottom of a pool and rotatable by a predetermined angle about a horizontal axis near one side in a wave-making direction, and a peripheral wall covering a rotation space of the door. A peripheral wall structure having a wave-making outlet formed on the wave-making direction side; a drive mechanism for reciprocatingly rotating the door body by a predetermined angle around the horizontal axis; and both ends of the door body A plurality of vents opened in the side wall of the peripheral wall structure located on the side so as to be aligned along the rotation locus of the door body, one end is connected to each of the vents, and the other end is connected to the outside air. A plurality of vent pipes opened to the air pipe, provided in the plurality of vent pipes, to allow air to flow from one end side to the other end side of the vent pipe, and from one end side of the vent pipe to the other end side. A wave maker comprising a check valve for preventing outflow of water.