US20220008799A1 - Surfing wave-making apparatus and surfing practice facility equipped with the same - Google Patents

Surfing wave-making apparatus and surfing practice facility equipped with the same Download PDF

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Publication number
US20220008799A1
US20220008799A1 US17/294,966 US201817294966A US2022008799A1 US 20220008799 A1 US20220008799 A1 US 20220008799A1 US 201817294966 A US201817294966 A US 201817294966A US 2022008799 A1 US2022008799 A1 US 2022008799A1
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United States
Prior art keywords
container body
wave
pool
water
slope
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Abandoned
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US17/294,966
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English (en)
Inventor
Takahiro OSHIBE
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Response-Engineer Inc
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Response-Engineer Inc
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Assigned to RESPONSE-ENGINEER, INC reassignment RESPONSE-ENGINEER, INC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: OSHIBE, TAKAHIRO
Publication of US20220008799A1 publication Critical patent/US20220008799A1/en
Abandoned legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B69/00—Training appliances or apparatus for special sports
    • A63B69/0093—Training appliances or apparatus for special sports for surfing, i.e. without a sail; for skate or snow boarding
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C19/00—Design or layout of playing courts, rinks, bowling greens or areas for water-skiing; Covers therefor
    • A63C19/10—Ice-skating or roller-skating rinks; Slopes or trails for skiing, ski-jumping or tobogganing
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63G—MERRY-GO-ROUNDS; SWINGS; ROCKING-HORSES; CHUTES; SWITCHBACKS; SIMILAR DEVICES FOR PUBLIC AMUSEMENT
    • A63G31/00—Amusement arrangements
    • A63G31/007—Amusement arrangements involving water
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H4/00—Swimming or splash baths or pools
    • E04H4/0006—Devices for producing waves in swimming pools
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H4/00—Swimming or splash baths or pools
    • E04H4/14—Parts, details or accessories not otherwise provided for

Definitions

  • the present invention relates to a surfing wave-making apparatus for generating waves used for surfing activity, and a surfing activity facility provided with a pool to which the surfing wave-making apparatus is equipped.
  • the present invention provides a competition practitioner with practice for surfing tube riding, and a general player with experience in surfing tube riding.
  • Surfing is popular throughout the world. In recent years, there is an increasing number of people who pursue this not only as a marine leisure activity but also as a competition. In order to actually enjoy the surfing, it is necessary to go to the seashore in which the natural environment is suitable for the surfing condition.
  • the condition of the natural environment suitable for the surfing is that a coastal line that faces the ocean that is likely to be exposed to a large wave that is likely to be a so-called large and isolated wave in which the wave advances toward the coast. It is necessary for the large and isolated wave to advance toward the coast that the coast has a shallow sea bottom terrain such that waves are likely to appear at the same time so that the collapse area of the wave head and the area about to break are continuous.
  • the above-mentioned large and isolated wave is not a vibration wave that repeats vertical movement at the same point, but is a progressive wave going forward to the coast with an interval between the waves and in which one wave becomes a large and isolated state.
  • the wave suitable for the surfing is a wave in which the cross section of the wave is formed into a tubular shape by the appearance of a region immediately before the collapse of the wave head of the isolated wave.
  • a surfer can surf by sliding from the collapse area of the wave front of this tubular winding wave to the area just before the collapse.
  • the flap-type wave-making apparatus can generate a wave by reciprocating and swinging a semi-submerged vertical wave-making plate whose lower end is rotatably supported by a hinge as a fulcrum at the bottom of the water tank.
  • the piston wave-making apparatus can generate a wave by reciprocating a semi-submerged piston attached to a shaft by pushing and pulling along the shaft.
  • the air compression type wave-making apparatus is provided with a vacuum pump, a blower, or the like in an air storage tank formed on one side of the water tank, and air into the air storage chamber by suction and blow-out atmospheric pressure.
  • the water level fluctuates according to the inflow and outflow of water to generate waves.
  • the tank chamber type wave-making apparatus is provided with a gate at the lower part of the water storage tank formed on one side of the water tank, water is stored to a certain height in the water storage tank by a pump or the like, and then the gate is opened. It opens momentarily and drops water into the water tank to generate waves.
  • the water flow nozzle injection type wave-making apparatus pressurizes and ejects water from the nozzle into the pool to generate waves.
  • the carry-type wave-making apparatus starts from the state where the water carrier is submerged in the pool and is pulled vigorously with a cable or the like to power the water carrier being pulled in the pool almost horizontally. It is a wave-making apparatus that generates waves by ejecting water captured by the water carrier forward by moving it.
  • the wave formed by the flap-type wave-making apparatus is the so-called vertically fluctuating wave that vertically fluctuates the water in the pool at the same place and is not a progressive wave for going forward in an isolated state. Therefore, it is impossible to generate a so-called tubular wave in which the wave head in a region immediately before the collapse is continuous from the collapse region suitable for the surfing. Therefore, even if the size of the apparatus is increased and the power is increased, it is not possible to generate a tubular wave suitable for the surfing. If a large wave is generated by the flap-type wave-making apparatus, the flap is enlarged, and the depth of water needs to be increased. However, there is a problem that the mechanism becomes so large and complicated because the amount of water to move in the pool is so large.
  • the wave generated by the piston-type wave-making apparatus becomes a so-called vertically fluctuating wave that vertically pushes the water in the pool in the same manner as the flap type and is not a progressive wave that goes forward in an isolated state. Therefore, it is impossible to generate a so-called tubular wave in which the wave head in a region immediately before the collapse is continuous from the collapse region suitable for the surfing. Therefore, even if the size of the apparatus is increased and the power is increased, a tubular wave suitable for the surfing cannot be generated.
  • the air compression type wave-making apparatus is also a so-called vertically fluctuating wave that vertically pushes the water in the pool in the same manner as the piston type and is not a progressive wave that travels in an isolated state. Therefore, it is impossible to generate a so-called tubular wave in which the wave head in a region immediately before the collapse is continuous from the collapse region suitable for the surfing. In addition, since a large vacuum pump is used, energy efficiency is not good to generate a large wave.
  • the tank-type wave-making apparatus has a problem in the direction of discharging the stored water, basically, the water is dropped directly under the tank chamber in the pool, so that the wave is transmitted as a so-called vertically fluctuating wave which is largely raised and lowered in the field due to the influence of the weight of the water and does not become a progressive wave which goes forward as an isolated state. Therefore, it is impossible to generate a so-called tubular wave in which the wave head in a region immediately before the collapse is continuous from the collapse region suitable for the surfing. In addition, since the water is pumped up by the pump and stored in the tank, the energy efficiency is not good.
  • the water flow nozzle injection type wave-making apparatus To generate a real tubular wave.
  • the generated wave only slides on the curved surface of the apparatus that is made in a mountain shape, and the generated wave does not have a collapse area suitable for surfing. It is not possible to generate a so-called tubular wave in which the wave head in a region immediately before the collapse is continuous from the collapse region suitable for the surfing.
  • the carry-type wave-making apparatus is the most excellent wave-making apparatus in the prior art, and the generated wave is a wave suitable for the surfing, and a so-called tube-shaped wave is generated so that the wave head in a region immediately before the collapse can continue from the collapse region.
  • the water carrier is pulled by a cable or the like to move horizontally in the pool from a state in which the water carrier is sunk under a pool draft waterline.
  • the motor of the driving device In order to obtain the initial speed in a state where the water is caught in the water carrier in the sunk state, the motor of the driving device must be large.
  • this configuration belongs to a “carry-type wave generating apparatus”.
  • the amount of water to be discharged is only an amount to be shot as a progressive wave, most of the kinetic energy of the container body can be converted into kinetic energy of the progressive wave. Most of the energy is given to water to generate the wave, and other than the wave generating can be suppressed, so energy efficiency becomes high.
  • the movement of the container body in of the moving track can be a free fall movement on the slope.
  • the container body is formed of a material having a specific gravity larger than that of water and the total weight is large enough, the potential energy becomes large.
  • the potential energy is converted into kinetic energy. If the kinetic energy is sufficient for the container body to plunge into the water of the pool, the kinetic energy can be supplied to the pool water temporarily while catching the water mass caught in the container body temporarily. That is, the kinetic energy of the container is converted into kinetic energy for discharging the water mass, and the water lump is shot forward.
  • the container body is open forward, has at least a bottom plate, and can capture water at least temporarily on the bottom plate, however, there may be a variety of variations. For example, there may be a configuration in which only a bottom plate is provided as a container body.
  • the bottom plate has a slope bottom in which the front side in the advancing direction is low and the rear side is high.
  • the vertical cross section is triangular, and the sharply pointed tip is forward and enters the draft waterline of the pool from the tip. It is possible to temporarily catch and lift water on the bottom of the conical slope by rushing into the water as if it is a hatchet. If the inclination of the bottom of the slope is large, the water does not slip upward and plunge over the rear of the container body, so that the amount of water to be temporarily captured becomes large.
  • the container body in the case where the container body is only the bottom plate, it is preferable to build a lane partition wall along the side of the traveling lane for the container body in the in-pool traveling track.
  • the container body moves in the traveling lane so as to give kinetic energy to hit the captured water sufficiently forward after the container body enters the water in the pool.
  • the captured water is surrounded by the container body from the bottom side and the lane partition wall from the side.
  • the container body may be provided with a bottom plate and a back plate.
  • the bottom surface is preferable as the slope shape to reduce the amount of collision of the water with respect to the back plate.
  • the kinetic energy obtained by the free fall of the container body is smoothly converted into the kinetic energy of the water.
  • the container body may be provided with a bottom plate, a back plate and side plates.
  • the lane partition wall in the pool can be omitted.
  • a structure in which side plates are provided in the container body and a lane partition wall on the in-pool traveling track can be possible.
  • the weight of the container body can be adjusted by providing a detachable weight on a part of the container body.
  • the potential energy of the container body on the slope track and the magnitude of the kinetic energy obtained by converting the potential energy of the container body by dropping the slope track can be adjusted, the kinetic energy given to the water can be adjusted, and the kinetic energy and height of the shot wave can be adjusted.
  • the arrangement structure of the container body in the wave-making apparatus for surfing has the following types.
  • One arrangement structure of the container body is the one wherein a plurality of container bodies are provided, and the container bodies are arranged in a row in a width direction so as to face the front surfaces of the respective containers with respect to the play area. Even in this type, one large traveling wave can be generated by moving the plurality of containers forward in a row. In addition, if there is no gap on the joint surface between the container bodies, a turbulent flow is suppressed, and an isolated traveling wave having a small disturbance and good quality can be generated.
  • the container body is a singular, but the width of the container corresponds to the width of the wave to be generated. It is preferable that one or plural of inner partition plates are provided so as to be orthogonal to the front surface in the container body. Even in this type, since there are inner partition plates at an appropriate interval, it is possible to suppress the turbulent flow in the lateral direction, and to generate an isolated progressive wave having a small disturbance and good quality.
  • the apparatus configuration becomes complicated, but when the height of the free-falling slope is sufficiently difficult to secure or when the inclination should be made gentle and the length of the slope (the slope moving distance) becomes large but sufficient length is not easily secured or the like, kinetic energy obtained by free fall is insufficient because of suppressing the height of the slope and the length of the slope, the shortage can be compensated by enhancing the kinetic energy by the catapult or the elastic body.
  • the main portion may include the slope track above the draft waterline of the pool to under the draft waterline of the pool.
  • the slope track may have a slope of a plane or a gentle angle in the starting portion and may have the gentle angle gradually reduced in the terminal direction under the draft waterline of the pool of the slope.
  • the angle gradually decreases in the advancing direction followed by the angle gradually increases in the advancing direction. Because, after the container body is plunged into water to catch the water in the pool and the captured water in the inside of the container is to go forward, rapidly decelerating forward movement of the container facilitates the generation of an isolated wave. If there is a portion in which the moving path gradually becomes smaller in the advancing direction and includes a portion of which the angle gradually increases in the advancing direction, deceleration is easily applied to the container body, and only the water inside the container body is forced forward apart from the container to form an isolated wave.
  • the container body falls along the slope of the moving track, but a frictional resistance may occur between the bottom surface of the container body and the slope.
  • the inclination of the slope, the material of the slope, the bottom surface state of the container body, the weight of the container body, etc. can vary.
  • a rail mechanism provided along the track as a rail type moving path and a wheel provided on the bottom surface of the container body are employed, and the container body can move smoothly by the rail mechanism. Since impact is applied to the container when the container body enters the water of the pool, it is preferable that the rail structure is such that the wheel does not come off the rail with the impact.
  • the return traction device is provided with a connection line attached to a part of the container body, and a driving force for pulling up the connection line and pulling back the container body to the starting position above the draft waterline of the pool. Since the driving force is used for the movement of pulling back the container body, it is possible to take up the container body at a speed smaller than the speed at which the container body falls and rushes into the water and an excessively large motor or the like may not be needed.
  • the wave-making device for the surfing of the present invention described above is installed in the pool. Further, the bottom surface of the pool is devised as follows. There is a flat part following the range where the container body moves, and a slope part with an upward gradient is provided in the vicinity of the start position of the play area following the flat part. In this arrangement of the slope portion, an angle is given relative to a moving direction in which the container body moves.
  • the wave speed where the depth becomes shallow becomes slow. While passing through the slope, the difference in speed in the front-back direction of the wave is accumulated, so that a so-called tubular wound wave is formed so that the back side of the wave covers the front side, and eventually the wave head collapses forward.
  • the slope portion has a skew and has a substantially triangular shape having a vertex so as to face the container body direction, the speed is gradually delayed from the position corresponding to the vertex of the triangle, and the speed is gradually delayed toward the side direction of the triangle.
  • a tube-shaped winding wave suitable for the surfing in which the collapse region and the wave head in a region immediately before the collapse are continued is formed by successively collapsing in the lateral direction so as to continue from the collapse region.
  • the wave-forming apparatus for surfing of the present invention only the water of the pool captured in the container body in the pool water is pushed forward as the container body moves, and the isolated progressive wave can be easily formed. Further, in the surfing practice play facility of the present invention, if the slope portion of the upward gradient is provided near the start position of the play area of the pool, the speed of the traveling wave is delayed during the passage of the slope, and in one progressive wave, a tubular wave suitable for the surfing in which the wave head in a region immediately before the collapse is continued from the collapse region is generated.
  • the movement of the moving track of the container body can be mainly made as a free fall movement on the slope, the potential energy is converted into kinetic energy, and when it is sufficient kinetic energy to plunge into the water of the pool, energy can be supplied to the water so that the water mass caught in the container body can be temporarily shot forward.
  • FIG. 1 is a schematic view for easily showing the principle of a wave forming when a first variation container body 110 a is used.
  • FIG. 2 is a schematic view showing from a vertical cross section and a schematic view showing from an upper surface of the surfing wave-making apparatus.
  • FIG. 3 is a schematic view for easily showing the principle of wave making when the second variation container body 110 b is used.
  • FIG. 4 is a schematic view showing from a longitudinal section and a schematic view showing from an upper surface of the surfing wave-making apparatus.
  • FIG. 5 is a schematic view showing a variety of container bodies in a simple manner.
  • FIG. 6 is a schematic view showing an example configuration of a conventional flap-type wave-making apparatus
  • FIG. 7 is a schematic view showing an example configuration of a conventional piston-type wave-making apparatus
  • FIG. 8 is a schematic view showing an example configuration of a conventional air tank-chamber type wave-making apparatus.
  • FIG. 9 is a schematic view showing example configuration of a conventional water tank-chamber type wave-making apparatus.
  • FIG. 10 is a schematic view explaining now the turbulent flow generated at the back surface of a moving body moving in water inhibits wave-making.
  • FIG. 11 is a schematic view showing a basic structure of a wave-making apparatus for a surfing, according to the Embodiment 1 of the present invention.
  • FIG. 12 is a schematic view showing an example where the container body 110 a is a plurality of (n) pieces.
  • FIG. 13 is a schematic view showing a state in which an isolated progressive wave 202 of a synthetic wave is formed in a configuration in which four container bodies 110 a are in parallel in a row.
  • FIG. 14 is a schematic view showing one stroke of a wave-making for surfing by the wave-making apparatus 100 .
  • FIG. 15 is a schematic view showing configuration in which a stopper 125 is provided on the in-pool traveling track 123 of the moving track 120 .
  • FIG. 16 is a schematic view showing a flow from the wave form of the surfing wave until the container body 110 is returned after the wave is formed in the wave-forming apparatus 100 .
  • FIG. 17 is a schematic view showing configuration in which a rail is laid on a contact surface between the moving track 120 and the container body 110 a.
  • FIG. 18 is a schematic view for explaining a structure for reducing friction with respect to the container body by installing a wheel between the moving path and the container body.
  • FIG. 19 is a schematic view showing the bottom of the pool 200 of the surfing practice facility of the present invention in an easy-to-understand manner.
  • FIG. 20 is a schematic view showing an example in which a shape of the slope 220 is provided so as to run obliquely.
  • FIG. 21 is a schematic view showing a conventional flap-type wave-making apparatus in the prior art.
  • FIG. 22 is a schematic view showing a conventional piston wave-making apparatus in the prior art.
  • FIG. 23 is a schematic view showing a conventional air compression type wave-making apparatus in the prior art.
  • FIG. 24 is a schematic view showing a conventional tank chamber type wave-making apparatus in the prior art.
  • FIG. 25 is a schematic view showing a conventional water flow nozzle injection type wave-making apparatus in the prior art.
  • FIG. 26 is a schematic view showing a conventional carry-type wave-making apparatus in the prior art.
  • FIG. 1 to FIG. 4 are a drawings for easily explaining the principle of wave-making by the wave-making apparatus for surfing according to the present invention.
  • FIG. 5 is a drawing showing a variety of container bodies in a simple manner.
  • FIG. 6 to FIG. 9 are added to show an example configuration of a conventional flap-type wave-making apparatus, a piston-type wave-making apparatus, and a wave-making apparatus of a tank-chamber type.
  • the first variation container 110 a is a container body formed of a bottom plate (a slope bottom) and a side plate shown in FIG. 5 ( a ) .
  • FIG. 1 is a schematic view easily showing the principle of a wave form when a first variation container body 110 a is used. Parts relating to the description of the principle of the wave making are picked out and other parts are omitted.
  • FIG. 1 is a perspective view showing the movement of the container body 110 in the five stages of ( 1 ), ( 2 ), ( 3 ), ( 4 ), and ( 5 ) in time series from the left side to the right side in the figure and the state of shooting the isolated wave for surfing.
  • FIG. 1 the front side of FIG. 1 is continued to the play area of the pool 200 , but the drawing is omitted.
  • a moving track 120 including a slope track 121 for moving the container body 110 a.
  • the slope 121 is provided from a position above the draft waterline of the water 201 of the pool 200 to a position where at least a part of the container body 110 a sinks below the draft waterline of the water 201 in the pool 200 .
  • FIG. 1 shows a state in which the container body 110 a slides on the slope 121 of the moving track 120 and enters the water 201 of the pool 200 .
  • the state of FIG. 1 ( 1 ) is that the container body 110 a is located above the draft waterline of the water 201 of the pool 200 on the moving track 120 . In this state, the water 201 of the pool 200 is not yet plunged into the water 201 . In the state of FIG. 1 ( 1 ), the container is dropped along the slope 121 while accelerating in the moving direction by gravity. The contact structure between the container body 110 a and the slope surface and the auxiliary structure using the catapult mechanism and the elastic body for enhancing kinetic energy will be described later. In order to simplify the description, it is assumed that the container body 110 a slides down by its own weight along the slope 121 .
  • FIG. 2 ( a ) shows a vertical cross section so that the state in water is easy to understand.
  • FIG. 2 ( b ) is a schematic view showing a view from the upper surface.
  • the right side ( 1 ) shows the initial state of the container body 110 a
  • the center portion ( 2 ) shows the acceleration state of the container body 110 a
  • the left side ( 3 ) shows the state immediately after the container body 110 stops.
  • FIG. 2 ( 1 ) shows a state in which the container body 110 a is located at a position above the draft waterline of the water 201 of the pool 200 on the moving track 120
  • FIG. 2 ( a ) shows a vertical section and ( b ) viewed from the upper surface.
  • FIG. 2 shows the state that is different in height of the container body 110 a from FIG. 1 ( 1 ), but these are showing the state before entering the water 201 in the pool 200 is common.
  • the state of FIG. 1 ( 2 ) is a state in which the container body 110 a starts to enter under the draft waterline of the water 201 of the pool 200 on the moving track 120 .
  • the potential energy possessed by the container body 110 a is converted to kinetic energy.
  • the state of the inclined surface 121 under the water 201 of the pool 200 is not shown in FIG. 1 , it is preferable that the inclined surface 121 of the moving track 120 gradually becomes smaller in the advancing direction such that the container body 110 a is smoothly plunged into the water of the pool to easily travel forward.
  • the container body 110 a has a box shape with a front portion opened and a bottom portion and a side face plate and is a container capable of capturing water in a portion of the internal space.
  • the bottom of the slope is provided in the container body 110 a, so that the water inside the container body 110 a rises up the bottom of the slope, and the water 201 of the pool 200 is temporarily held above the draft waterline of the pool in the container body 110 a temporarily. It should be noted that the presence or absence of the bottom of the slope and the angle of the bottom of the slope are not limited.
  • FIG. 1 ( 3 ) The state of FIG. 1 ( 3 ) is that a part of the container body 110 a travels under the draft waterline of the water 201 of the pool 200 on the moving track 120 . From FIG. 1 ( 2 ) to FIG. 1 ( 3 ), kinetic energy possessed by the container body 110 a is converted to kinetic energy of water in the pool captured in the container body 110 a. In this example, a part of the pool water is raised above the draft waterline of the water 201 in the pool 200 . A part of the kinetic energy possessed by the container body 110 is converted to the potential energy of the caught water 201 .
  • FIG. 2 ( 2 ) shows a state in which a part of the container body 110 a travels under the draft waterline of the water 201 of the pool 200 on the moving track 120
  • FIG. 2 ( a ) shows a vertical section and ( b ) viewed from the upper surface.
  • the container body 110 a is traveling substantially horizontally, it is not always limited to the horizontal state because the slope 121 of the moving track 120 changes gradually in the advancing direction as in the slide.
  • the container body 110 a continues to travel in the in-pool track, and the water 201 captured in the container body 110 a in FIG. 1 ( 3 ) moves forward integrally with the container body 110 a. Between FIG. 1 ( 3 ) and FIG. 1 ( 4 ), kinetic energy of water captured in the container body 110 A is directed forward.
  • this integration period may vary depending on the condition of traveling of the container body 110 a, but this integration period may be extremely short.
  • FIG. 1 ( 5 ) shows that the container body 110 a is decelerated on the moving track 120 , while the water 201 of the pool 200 is not decelerated, so that the caught water 201 is driven forward from the container body 110 a as the progressive wave 202 suitable for the surfing.
  • the kinetic energy of the water shot forward from the container 110 a is propagated as an isolated progressive wave 202 as it is.
  • FIG. 2 ( 3 ) shows a state in which the container body 110 a is decelerated on the moving track 120 and the inner water 201 of the container body 110 a is driven forward as a traveling wave 202 for the surfing
  • FIG. 2 ( 3 ) ( a ) shows a vertical section and ( b ) viewed from the upper surface.
  • the water 201 captured inside the container body 110 maintains the speed by the kinetic energy obtained shown as FIG. 2 ( 2 ). However, since the container body 110 a is decelerated or stopped, only the inner water 201 captured inside the container body 110 a continues to move forward and is driven as an isolated traveling wave 202 .
  • the wave suitable for the surfing is a wave in which the cross section of the wave is formed into a so-called tubular shape by the appearance of a region immediately before the collapse of the wave head of the isolated wave. This is formed by gradually decreasing the speed of the isolated traveling wave, and the isolated traveling wave is necessary for wave-forming of the tubular wound wave.
  • an isolated traveling wave 202 is necessary for making a suitable wave for a surfing, and the surfing can be performed by sliding from the collapse region of the wave head toward a region immediately before the collapse.
  • the amount of water to be propelled forward is almost all the amount of water to be shot as an isolated traveling wave
  • most of the energy of the container body 110 a can be converted into kinetic energy with respect to the traveling wave, so that energy applied to water other than the wave traveling on the water surface can be suppressed and energy efficiency becomes high.
  • the second variation container body 110 b is a container body 110 b formed only by the bottom plate (slope bottom) shown in FIG. 5 ( b ) .
  • the container body shown in FIG. 5 ( b ) differs from the container body 110 a of FIG. 5 ( a ) in that there is no side face plate.
  • the longitudinal section has a substantially triangular shape and has a shape such that the tip is pointed toward the rear end like an ax.
  • FIG. 3 is a drawing for easily explaining the principle of wave making when the second variation container body 110 b is used. Parts relating to the description of the principle of the wave making are taken out and other parts are omitted.
  • FIG. 3 is a perspective view showing the movement of the container body 110 b in the five stages of ( 1 ), ( 2 ), ( 3 ), ( 4 ), and ( 5 ) from the left side to the right side in FIG. 3 and the state of shooting the isolated wave for surfing.
  • the front side of FIG. 3 is continued to the game area of the pool 200 , but the drawing is omitted.
  • a moving track 120 including a slope 121 for moving the container body 110 b as shown in FIG. 3 , and a slope 121 is provided from a position above the draft water line of the pool 200 to a position where at least a part of the container body 110 B sinks under the draft water line of the pool 200 .
  • the difference from FIG. 1 is that there is provided a lane partition wall 124 for partitioning the running track in the pool.
  • the lane partition wall 124 is disposed on the side of the container body 110 b running on the running track in the pool and surrounds the traveling container body 110 b so as to prevent the water 201 running on the surface of the slope of the traveling container body 110 b from escaping sideways.
  • the container body 110 a shown in FIG. 1 is provided with a side face plate 110 a, but the container body 110 b shown in FIG.
  • lane partition wall 124 for partitioning the traveling track in the pool is positioned on the side of the container body 110 b , whereby water can be surrounded by the container body 110 b and the lane partition wall 124 .
  • FIG. 3 shows a state in which the container body 110 b slides on the slope 121 of the moving track 120 and enters the water in the pool 200 .
  • the state of FIG. 3 ( 1 ) is that the container body 110 b is in a position above the draft water line of the water 201 of the pool 200 on the movement path 120 .
  • the container body 110 b is dropped along the slope 121 and is free to fall while accelerating along the slope in the moving direction by gravity.
  • FIG. 4 ( a ) shows a longitudinal section so that the state in water is easy to understand.
  • FIG. 4 ( b ) is a view showing a view from the upper surface.
  • the right side shows the initial state of the container body 110 b, the center thereof being in the acceleration state of the container body 110 b, and the left side of the container body 110 b immediately after the stop of the container body 110 b.
  • FIG. 4 ( 1 ) shows a state in which the container body 110 is located at a position above the draft waterline of the water 201 of the pool 200 on the moving track 120
  • FIG. 4 ( a ) shows a vertical section and ( b ) viewed from the upper surface.
  • the height of the container body 110 b differs from the state of FIG. 3 ( 1 )
  • the state before entering the water 201 of the pool 200 is common.
  • FIG. 3 ( 2 ) is a state in which the container body 110 b starts to enter under the draft waterline of the water 201 of the pool 200 on the moving track 120 . From FIG. 3 ( 1 ) to FIG. 3 ( 2 ), the energy possessed by the container body 110 b is converted to kinetic energy.
  • the lane partition wall 124 is provided so as to partition the traveling track in the pool, and the side of the traveling container body 110 b is surrounded, so that the water 201 running on the slope surface of the traveling container body 110 b does not escape sideways.
  • the height of the lane partition wall 124 is not limited, it is preferable to be higher than the container body 110 b.
  • FIG. 3 ( 3 ) The state of FIG. 3 ( 3 ) is that a part of the container body 110 b travels under the draft waterline of the water 201 of the pool 200 on the moving track 120 . From FIG. 3 ( 2 ) to FIG. 3 ( 3 ), kinetic energy possessed by the container body 110 is converted to kinetic energy of water in the pool captured in the container body 110 b.
  • the side of the traveling container body 110 b is surrounded by the lane partition wall 124 , so that the water 201 of the pool effectively running up the surface of the slope.
  • FIG. 4 ( 2 ) shows a state in which a part of the container body 110 b is traveling under the draft waterline of the water 201 of the pool 200 on the moving track 120
  • FIG. 4 ( a ) shows a vertical section and ( b ) viewed from the upper surface.
  • the container body 110 b continues to travel in the in-pool traveling track, and the water 201 captured in the container body 110 b in FIG. 3 ( 3 ) moves forward together with the container body 110 b.
  • kinetic energy of water captured in the container body 110 b is arranged forward.
  • both sides of the traveling container body 110 b are surrounded, and the water 201 running on the slope surface of the traveling container body 110 b does not escape to the side and is efficiently converted into the forward movement energy.
  • the state of FIG. 3 ( 5 ) indicates that the container body 110 b is decelerated on the moving track 120 , while the water 201 of the pool 200 is not decelerated, so that the water 201 of the pool 200 is shot forward from the container body 110 b as the traveling wave 202 for the surfing.
  • the lane partition wall 124 since the lane partition wall 124 is provided so as to partition the traveling track in the pool, the lane partition wall 124 let the inner water go forward from the container body 110 b and shot the inner water as the traveling wave 202 for the surfing and the energy is efficiently converted into kinetic energy toward the front without any escape to the side.
  • the kinetic energy of the water driven forward from the container body 110 b is propagated as an isolated traveling wave 202 as it is.
  • FIG. 4 ( 3 ) shows the state in which the container body 110 b is decelerated on the moving track 120 and the inner water 201 of the container body 110 is shot forward as the traveling wave 202 for the surfing
  • FIG. 4 ( a ) shows a vertical section and ( b ) viewed from the upper surface.
  • the water 201 captured in the container body 110 b maintains the speed by the kinetic energy obtained in FIG. 2 ( 2 ). However, since the container body 110 b is decelerated or stopped, only the water 201 captured in the container body 110 b continues to move forward and is driven as an isolated traveling wave 202 .
  • FIG. 5 is a drawing showing an example of various variations of the container body 110 .
  • FIG. 5 ( a ) shows a container body 110 a of a first variation and is a container body 110 a formed of a bottom plate (a slope bottom) and a side plate.
  • the principle of the wave making has been described above.
  • FIG. 5 ( b ) shows a container body 110 b of a second variation and is a container body 110 b formed only of a bottom plate (inclined bottom).
  • the principle of the wave making has described above and it makes waves by a combination with a lane partition wall 124 .
  • FIG. 5 ( c ) shows a third variation container 110 c, which is a container 110 c formed of a bottom plate (slope bottom) and a back plate.
  • the principle of the wave-making is the same as the principle of the wave-making of the second variation container body 110 b but makes waves by a combination with the lane partition wall 124 . Since the back plate is present, the water 201 running up to the end of slope and over the backward of the slope is dammed, and the water 201 is kept forward by the back plate. That is, the water 201 is surrounded by the slope surface, the back plate, and the lane partition wall 124 and is efficiently driven forward.
  • FIG. 5 ( d ) shows a fourth variation container 110 d, which is a container body 110 d formed of a bottom plate, side plates and a back plate.
  • the principle of the wave-making is the same as the principle of the wave-making of the first variation container body 110 a, and the lane partition wall 124 is not particularly required because the side plates are present.
  • the lane partition wall 124 also serves as a partition of the traveling lane even though the fourth variation container 110 d has side plates.
  • the material is not limited, but it is necessary to have a structural strength which can withstand the splash into water, and a specific gravity larger than that of water is required, and therefore, a metal is preferable.
  • a resin material or the like in a part thereof.
  • a part of the inside can also be made hollow. By making a portion of the interior hollow, the weight can be placed in the space to adjust the total weight. It is also possible to provide a mounting member for attaching a weight to the back surface or the like. If it is the back surface, the weight can be easily replaced.
  • the above is a principle of the wave making of the wave-making apparatus 100 for the surfing of the present invention.
  • FIG. 6 First a prior wave-making example with the so-called “flaps type wave-making apparatus” is shown in FIG. 6 , it is understood that the back-and-forth movement of the flaps installed in the pool water propagates vibrations to the entire water of the pool. Since kinetic energy is dispersed throughout the water of the pool, it is a vibration wave vibrating vertically, so that it is not an isolated traveling wave.
  • FIG. 7 A second prior wave-making example with the so-called “piston type wave-making apparatus” is shown in FIG. 7 . It is pushing and pulling the pressing plate along the axis against the water surface of the pool, and it is understood that the vibration source is present in a portion of the water surface of the pool, and the vibration propagates around the water surface, water, or the like. Since the kinetic energy is dispersed throughout the water surface of the pool, it is a vibration wave vibrating vertically, so that it is not an isolated traveling wave.
  • FIG. 8 The prior wave-making example with the so-called “air compression type wave making apparatus” according to the prior art is shown in FIG. 8 to form a wave by making the air compression tank facing the water surface of the pool and discharging the compressed air into the water at once, and it is understood that the vibration source is present in a part of the water surface of the pool, and the vibration propagates around the water surface, water, or the like. Since the kinetic energy is dispersed throughout the water surface of the pool, it is a vibration wave vibrating vertically, so that it is not an isolated traveling wave.
  • the surfing apparatus 100 of the present invention is an advantageous scheme for forming an isolated progressive wave suitable for surfing.
  • the forward movement distance of the container body 110 can be designed to make an isolated traveling wave according to the amount of water to be captured by the container body 110 and the width of the play area.
  • FIG. 10 is a drawing easily explaining the turbulent flow generated at the back surface of a moving body moving in water becomes inhibition factor for wave-making.
  • an object moving in water at a high speed is a plate body having a large facing area
  • the water surface on the front surface increases the rising pressure
  • the water surface on the back surface is instantaneously lowered and the pressure decreases.
  • the pressure difference between the front and back of the plate acts to prevent the plate from advancing.
  • water tries to flow into the dent in the rear from the rising water surface in the front and the surrounding water surface. The flowing water wraps around the back of the plate.
  • the plate body must be moved forward with peeling off the water which goes around the back surface, and the water acts as a kind of resistance to the forward movement.
  • large amounts of energy is required when the object such as a plate having a large facing area moves in water at a high speed.
  • the wave suitable for the surfing needs continuity such that the wave head is substantially equally delayed in the lateral direction while the wave head is aligned, and the turbulence flow disturbs the rhythm of making waves for surfing. Therefore, when a turbulent flow occurs, the formation of a so-called “tubular wound wave in which the wave head in a region immediately before the collapse is continued from the collapse region” is disturbed.
  • the side surface of the container body 110 has the side plate, it is understood that the occurrence of turbulence is suppressed at the boundary surface between the side plate and the water surface outside the side plate. That is, it is possible to form an isolated traveling wave having good quality with a small disturbance.
  • FIG. 6 ( b ) it can be seen that a turbulent flow occurs around the edge of the flap by the reciprocating motion of the plate-like flap installed in the pool water, and the turbulent flow propagates to the surroundings.
  • This turbulent flow may be one of the causes of turbulence of the wave.
  • FIG. 7 ( b ) it is understood that a turbulent flow occurs around the edge of the push plate by the reciprocating motion of the plate-like push plate which is pushed against the water surface of the pool as shown in FIG. 7 ( b ) , and the turbulent flow propagates to the surroundings.
  • This turbulent flow is one of the causes of disturbance of the wave.
  • FIG. 8 ( b ) it is understood that the kinetic energy of the air is converted to the vibration energy of the surrounding water, various turbulent flows are generated at once, and the turbulent flow propagates to the surroundings. This turbulent flow is one of the causes of disturbance of the wave.
  • FIG. 11 is a drawing showing a basic structure of a wave-making apparatus for surfing according to the Embodiment 1 of the present invention.
  • the moving track 120 is an example in which a rail or the like is not provided.
  • the left side of FIG. 11 continues to the play area of the pool 200 but is not shown.
  • FIG. 11 ( a ) is a view showing the overall structure from the side surface and shows the basic configuration in an easy-to-understand manner, and the accompanying structure obtained by the actual apparatus is not shown.
  • the attachment structure for dropping the container body 110 along the slope track of the moving track 120 , the reinforcing wall surface and the column structure, etc. are not shown in the drawings so that the internal structure is easy to understand.
  • any container body 110 of the first to fourth variations shown in FIG. 5 may be used, but a first variation container body 110 a is typically shown.
  • the wave-making apparatus 100 for surfing has a structure including a container body 110 a, a moving track 120 , and a delivery traction device 130 .
  • FIG. 11 illustrates a basic structure of a set of container bodies 110 a, a moving track 120 , and a delivery traction device 130 , but these basic sets of the structure can be provided in parallel in a plurality of set width directions, as will be described later.
  • FIG. 11 ( b ) shows the container body 110 .
  • the left side is a plan view
  • the right side is a side view, and is partially transmitted so that the internal structure is easy to understand.
  • the first variation container body 110 a is typically shown.
  • the container body 110 falls into the pool water 201 by dropping along the slope track 121 of the moving track 120 , the weight and mechanical structural strength necessary for obtaining sufficient kinetic energy are required.
  • the width of the container body 110 a it is necessary to determine the width of the wave to be generated in the play area. Since the wave emitted from the wave-making apparatus 100 of the present invention is an isolated traveling wave advancing forward, the width of the wave is not spread and advances forward in the width as it is. Therefore, it is necessary to determine the number of the container bodies 110 a and the respective widths in consideration of the width of the waves reaching the play area. The total width of all the container bodies 110 a may be designed to be the width of the wave reaching the play area.
  • FIG. 12 ( a ) is a case where the container body 110 a is a plurality of (n) pieces.
  • the front surfaces of the respective container bodies 110 - 1 to 110 -n are arranged in a row in the width direction so as to face to the play area.
  • Each width is W- 1 to W-n.
  • the width W of the shot waves becomes the following
  • W W -1+ W -2+ . . . + W - n
  • This W may be designed to be the width W 0 of the wave to be reached in the play area.
  • FIG. 12 ( b ) is a case in which the container body 110 a is a single case.
  • one or a plurality of partition plates 111 are preferably provided inside the container body 110 a as shown in FIG. 12 ( b ) . If there is a partition plate 111 installed at an appropriate interval, the advancing direction of each part of the wide wave can be adjusted, and the generation and propagation of the turbulent flow in the side direction can be suppressed, and the isolated traveling wave of good quality with small disturbance can be formed.
  • FIG. 13 is a drawing showing a state in which an isolated progressive wave 202 of a synthetic wave is formed in a configuration in which four container bodies 110 a are in parallel in a row.
  • the front side of FIG. 13 is continued to the play area of the pool 200 , but the drawing is omitted.
  • the four container bodies 110 a are simultaneously run in parallel, and the isolated traveling wave 202 is almost simultaneously driven from the container body 110 a, and the isolated traveling wave 202 becomes one large, isolated traveling wave 202 as a synthetic wave.
  • the moving track 120 is a moving path including a slope for moving the container body 110 , and includes a slope path 121 moving on the slope from a position on the draft waterline of the pool to a position where at least a part of the container body 110 sinks under the draft waterline of the water 201 of the pool 200 , and an in-pool traveling track 123 where at least a part of the container body travels while sinking under the draft waterline of the water 201 in the pool 200 .
  • an upper surface 122 is also provided above the draft waterline installed as a starting end.
  • the movement path 120 also serves as a support structure for supporting the entire object such as the container body 110 and the delivery traction device 130 .
  • the width and length of the moving track 120 may be determined by appropriately designing the width of the container body 110 a and the moving length of the container body 110 a.
  • the inclination of the slope track 121 is not particularly limited, it may be too long to accelerate the container 110 a at too small angles. In addition, the acceleration of the container 110 a becomes too large at an angle that is too large, and the impact at the time of plunging into the water of the pool may be excessive. Therefore, the inclination may be designed in consideration of the weight of the container body 110 a, the acceleration required for the container body 110 a, the friction coefficient between the slope track and the container body 110 a. For example, an angle between 15 degrees and 35 degrees may be considered but is not limited.
  • the friction coefficient between the slope track 121 of the moving track 120 and the container body 110 , and between the slope track 121 of the moving track 120 in the in-pool traveling track 123 and the container body 110 may be designed in consideration of various conditions such as the presence of a structure such as a rail on the surface material of the moving track 120 , and whether or not a wheel is installed between the moving track 120 and the container body 110 a.
  • the moving track 120 is an example in which a rail or the like is not provided.
  • a structure capable of withstanding the friction and the weight of the container body 110 a is required.
  • the moving track 120 needs to be designed so that the required mechanical structural strength can be obtained because the heavy container body 110 a is accelerated and traveled.
  • the moving track 120 it is also possible to provide a side wall which is installed over a side surface of the entire moving range in which the container body 110 moves.
  • the side wall is omitted so that the internal structure is better understood.
  • the basic configuration is such that no special external force is applied to the container body 110 a, and the container body 110 a is accelerated only by the position energy of the container body 110 a to obtain kinetic energy. That is, the movement of the moving track 120 of the container body 110 a is a free fall movement on the slope.
  • the container body 110 a is hardly dropped in a state where the container body 110 a is placed on the upper surface 122 , the container body 110 a is pulled up to a predetermined position of the slope track 121 by a delivery traction device 130 , which will be described later, so that the container body 110 a is freely dropped and moved on the slope of the moving track 120 .
  • the movement of the moving track 120 of the container body 110 a assists the acceleration movement by the catapult in addition to the free fall movement of the slope track 121 .
  • Catapults mechanisms are accelerators used in machines such as jet aircraft and roller coasters that require rapid acceleration at the start. On the principle of a stone thrower, a heavier object may be dropped, and its kinetic energy may be applied to the container body 110 a via a connecting line 131 , or an electromagnetic catapult may be used for electromagnetic acceleration.
  • the third type of acceleration device is such that the movement of the moving track 120 of the container body 110 a assists the acceleration movement received from the elastic body in addition to the free fall movement of the slope track 121 .
  • the container 110 a is fixed while being hung on the back plate of the container 110 a in a state where tension is generated in an elastic body such as rubber, and the fixing of the container 110 is released to release the rubber.
  • the delivery traction device 130 is a device for pulling up the container body 110 a which travels along the track and rushes into the pool 200 along the moving track 120 again.
  • the delivery traction device 130 includes a connection line 131 attached to a part of the container body 110 a, and a power device 132 .
  • the connection line 131 is delivered to allow the container body 110 a to drop.
  • the connection line 131 is pulled up by the power device 132 , and the container body 110 a is pulled back to the starting position above the draft waterline of the pool.
  • connection line 131 is not particularly limited, but may be a strong steel wire, a chain, a string, or the like. Although the number and mounting positions of the connection lines are not limited, the container body 110 a may be designed to be stably pulled up.
  • the power unit 130 may be capable of pulling up the container body 110 a via the connection line 131 . Since the pull-up speed is required to some extent, for example, there is a mechanical driving means such as an electric drive means such as a motor capable of obtaining sufficient torque, an engine, and a winch device.
  • a mechanical driving means such as an electric drive means such as a motor capable of obtaining sufficient torque, an engine, and a winch device.
  • FIG. 11 shows a wave-making procedure of the surfing wave by the wave-making apparatus 100 of the present invention.
  • the left side of FIG. 11 continues to the play area of the pool 200 but is not shown.
  • FIG. 11 ( a ) shows a state in which the container body 110 a is located above the slope track 121 . In this state, the container body 110 a is supported by the connection line 131 of the delivery traction device 130 .
  • connection line 131 of the delivery traction device 130 When the connection line 131 of the delivery traction device 130 is delivered from the state of FIG. 11 ( a ) , the container body 110 a starts free fall movement along the slope track 121 .
  • the movement path 120 is a flat surface, and receives frictional resistance, but the container body 110 a starts free fall movement along the slope track 121 .
  • FIG. 11 ( b ) shows a state in which the container body 110 a slides down the slope track 121 and travels on the running track in the pool. The lower part of the container body 110 a travels beneath the waterline of the pool 200 .
  • the state of FIG. 11 ( b ) is similar to that of FIG. 2 ( 2 ).
  • the traveling speed of the container body 110 a When the traveling speed of the container body 110 a is rapidly decreased, the water 201 inside the container body 110 a becomes easy to be shot as the isolated traveling wave 202 by the relative speed difference.
  • FIG. 15 is a configuration in which a stopper 125 is provided on the in-pool traveling track 123 of the moving track 120 . As shown in FIG. 15 , the container body 110 is forcibly stopped by the stopper 125 on the running track in the pool, and water inside the container body 110 a is easily driven forward as the isolated traveling wave 202 .
  • the stopper 125 Since the container body 110 a is decelerated by the resistance of water when the container body 110 a enters the pool 200 , the stopper 125 is not essential. In the case where the container body 110 is forcibly stopped by the stopper 125 , the impact applied to the container body 110 a at the time of stopping should be considered.
  • FIG. 16 in the wave-making apparatus 100 for surfing of the present invention, a procedure flow is shown until the container body 110 a is returned to its initial state after wave-making of the surfing wave.
  • the left side of FIG. 16 is continued to the play area of the pool 200 , but the drawing is omitted.
  • FIG. 16 ( a ) the power unit 132 of the delivery traction device 130 is operated, the connection line 131 is pulled back, and as a result, the container body 110 a to which the connection line 131 is attached is pulled up.
  • the state of FIG. 16 ( a ) is a state in which the container body 110 a is pulled back along the in-pool traveling track 123 in the pool in the reverse direction.
  • the state of FIG. 16 ( b ) is a state in which the container body 110 a is pulled back along the slope track 121 in the reverse direction.
  • FIG. 14 and FIG. 16 one stroke of a wave-making for surfing by the wave-making apparatus 100 for surfing of the present invention is completed. Thereafter, the stroke of FIG. 14 and FIG. 16 can be repeated to repeat the wave-making of the surfing wave.
  • Example 2 is a configuration in which a rail is laid on a contact surface between a moving track 120 and a container body 110 to reduce friction with respect to the container body 110 .
  • FIG. 17 shows a configuration in which a rail is laid on a contact surface between the moving track 120 and the container body 110 a.
  • the moving track 120 a is a rail type moving path and includes a rail mechanism 126 provided along the track.
  • any container body 110 of the first to fourth variations shown in FIG. 5 may be used, but a first variation container body 110 a is typically shown.
  • the laying place of the rail mechanism 126 may be a range in which the container body 110 A travels.
  • the slope track 121 , the in-pool traveling track 123 , or the like may be laid down to the upper surface 122 .
  • FIG. 17 ( a ) a part of the rail mechanism 126 is taken out and shown.
  • the material of the rail mechanism 126 is not limited, a metal rail such as steel or titanium steel is preferable because the container body 110 a, which is a heavy object, moves on it.
  • FIG. 17 ( b ) is a drawing showing a rail mechanism 126 laid on the moving track 120 .
  • the rail mechanism 126 is laid over the upper surface of the moving track 120 .
  • the left side of FIG. 17 ( b ) continues to the play area of the pool 200 but is not shown.
  • the container body 110 a slides and falls on the slope track 121 while being placed on the rail mechanism 126 .
  • the contact area between the container body 110 a and the moving path becomes only the contact surface with the rail mechanism 126 , the friction coefficient becomes small, the container body 110 is easily accelerated by the slope track 121 , and the device scale can be kept relatively small.
  • the apparatus such as the container body 110 a and the moving track 120 a in consideration of the coefficient of friction in contact with the rail mechanism 126 , it is possible to design the rush speed of the container body 110 a into the water in the pool 200 , the formation of the isolated traveling wave 202 , and the like.
  • Example 3 is a configuration in which a wheel is installed between the moving path and the container body to reduce friction with respect to the container body.
  • FIG. 18 is a view for explaining a structure for reducing friction with respect to the container body by installing a wheel between the moving path and the container body.
  • FIG. 18 ( a ) is a drawing showing a configuration in which a wheel is installed into the container body side.
  • FIG. 18 ( b ) is a drawing showing a configuration in which a wheel is installed into a moving road side.
  • any container body 110 of the first to fourth variations shown in FIG. 5 may be used.
  • a wheel 115 is typically attached to the first variation container body 110 a.
  • a wheel 115 is installed in the lower portion of the container 110 e.
  • a shaft is attached to a portion of the container body 110 e, and a wheel is rotatably attached to the shaft.
  • the number of the shaft and the wheel 115 is not limited, but it may be determined in consideration of the weight, balance, and the like of the container 110 e , which is a heavy object. In this example, four rows of wheels 115 are provided.
  • the rotation of the wheel 115 reduces the resistance for the container body 110 e to travel along the movement path 120 . Therefore, the container body 110 e can be easily accelerated by the slope track 121 , and the device scale can be kept relatively small.
  • FIG. 18 ( b ) a configuration example in which wheels are installed to the moving track 120 will be described.
  • a wheel is not provided at the lower part of the container body 110 a, but a wheel 125 is installed on the moving side.
  • the rail mechanism 126 c described in Example 2 is provided, a shaft is mounted in the rail mechanism 126 c, and a wheel 125 is rotatably attached to the shaft.
  • the attachment range of the shaft and the wheel 125 is not limited but may be in the range of all or a part of the slope track 121 requiring acceleration when the container body 110 travels.
  • only a portion of the rail mechanism 126 c is shown, and four rows of wheels 125 are shown, but may be provided in front and rear along the slope track 121 .
  • the container body 110 passing thereon smoothly travels along the rail mechanism 126 c of the moving track 120 c, so that the resistance becomes small. Therefore, the container body 110 is easily accelerated by the slope track 121 , and the device scale can be kept relatively small.
  • the bottom of the pool is devised so that an isolated traveling wave is formed by the above-mentioned wave-making apparatus for surfing and reaches the play area of the pool.
  • the formed wave has a region immediately before the collapse appears from the collapse area of the wave-head in the wave, and the cross-section of the wave is likely to be formed into a tubular shape.
  • FIG. 19 is a drawing showing the bottom of the pool 200 of the surfing practice facility of the present invention in an easy-to-understand manner.
  • FIG. 19 is a plan view.
  • the bottom surface of the pool 200 includes a flat portion 210 , a slope portion 220 , and a base portion 230 .
  • a play area 240 In the center of the pool 200 , there is a play area 240 .
  • the flat portion 210 is a flat portion following the range of movement of the container body 110 .
  • the front of the wave-making apparatus for surfing is spread.
  • the depth of the pool is relatively deep.
  • the slope 220 is a slope of the upward gradient provided near the start position of the play area 240 following the flat portion 210 .
  • the water depth of the pool gradually becomes shallow by passing through the slope.
  • the slope 220 is not provided parallel to the direction of the traveling wave but has skew.
  • the slope portion 220 has a skew with respect to the moving direction in which the container body 110 moves.
  • the slope 220 is substantially triangular.
  • the wave reaching the area of the slope portion 220 at the shortest time when the traveling wave progresses starts to become shallow, and passes through the slope portion 220 .
  • the adjacent waves then begin to enter and pass the slope 220 area. In this way, the change in the water depth of the traveling wave gradually occurs from one side to the other.
  • the base portion 230 is a base portion having a shallow bottom after through the slope portion 220 .
  • the base portion has a play area 240 . Since the back side of the base part 230 approaches the end part of the pool, the play area 240 is not set at the back side.
  • the speed of the wave is affected by the water depth of the pool. Physically, it is known that the deeper the water depth, the faster the wave velocity, and the shallower the water depth, the slower the velocity of the wave. Therefore, by providing the slope part 220 rising from the flat part 210 , the speed of the wave becomes slow according to the depth of the pool. During the passage of the slope 220 , a so-called tube-shaped winding is formed so that a velocity difference in the longitudinal direction of the wave is accumulated, the back side of the wave piles up on the front side, and eventually the wave head is collapsed forward.
  • the slope 220 Since the slope 220 has a substantially triangular shape having a vertex, the speed becomes slow from the position corresponding to the vertex of the triangle, and the speed is gradually delayed toward the side of the triangle.
  • a portion corresponding to the vertex in which the collapse region occurs at the earliest time becomes the earliest collapse portion and the adjacent area sequentially in the lateral direction so as to be continuous from the collapse region, and a tube-shaped wound wave suitable for a surfing such that the wave head in the collapsed region and the collapsed region is continuous is formed.
  • a pair of right and left tubular winding waves which are divided right and left with the vertex of the triangle as a boundary are formed.
  • the shape of the slope 220 may be skewed relative to the traveling wave and may be of various shapes.
  • the example of FIG. 20 is an example in which the shape of the slope 220 is provided so as to run obliquely.
  • one tube-shaped winding is formed from one of the pools toward the other.
  • the width of the play area is wide to some extent, and the length of the tube-shaped wound wave to be formed is longer than a certain degree.
  • a configuration in which a plurality of sets of wave-making apparatuses 100 for surfing are arranged in a row is preferable.
  • the wave-making apparatus for surfing of the present invention can be widely applied to a wave-making apparatus for an artificial surfing or the like installed indoors or outdoors.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
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  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
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CN113195065A (zh) 2021-07-30
JP6579566B1 (ja) 2019-09-25
EP3885011A4 (en) 2021-12-01
SG11202106176SA (en) 2021-07-29
EP3885011A1 (en) 2021-09-29
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KR20210090701A (ko) 2021-07-20
AU2018449992A1 (en) 2021-06-24

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