JPH06205862A - Water stream forming method of pool for training of water ski - Google Patents

Abstract

PURPOSE:To provide a water stream forming method by which a normal water ski running condition and slalom can be practiced and enjoyed by fixing one end of a skier traction rope and giving variations to the jetting direction. CONSTITUTION:A pool main body under a full condition and a pump device are utilized, and by the pump device, water is sucked from the pool main body or another water source. At least on the water surface in the pool, the stream of water is formed by a jetting means which jets the sucked water in the approx. horizontal direction by jetting water from a jetting nozzle on which numerous jetting holes are horizontally provided, and which is arranged under water and can perform a fan-shaped normal/ reverse horizontal turning under water and can stop it. For the fan-shaped normal/ reverse horizontal turning of the jetting means, a turn table on which a pump device being directly linked to the jetting means is mounted and fixed, is connected with a driving reduction motor by a link to form a quadric crank chain, and the quadric crank chain is driven to perform the fan-shaped normal/reverse horizontal turning, or various types of means are adopted such as that the reduction mechanism of normal/ reverse rotation of a motor or the rotation mechanism of a hydraulic turbine which is normally/reversely rotatable is directly connected to the spindle shaft of the jetting means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming a water stream in a water ski practice pool in which a person skis on a water surface.

[0002]

2. Description of the Related Art As a conventional water flow forming method for a water skiing exercise pool, there is one disclosed in Japanese Patent Publication No. 49-38540. This is because a ski that is towed by a motor boat or the like slides on top of stationary or gently flowing water, in order to disguise the condition of an actual water ski. A device that can be made up of a tank and a pumping device, which draws fluid from a part of the tank and distributes it into holes, upwards with respect to the fluid surface in the tank, and It is a configuration characterized in that it creates a flow of fluid horizontally toward the tank portion along the fluid surface, in use, the skier grips the other end of the rope, one end of which is fixed to a part of the tank, By levitating the ski above the fluid surface, the skier maintains a rest position on the flowing fluid surface, forming a state of water skiing.

Further, the applicant of the present application firstly comprises a pool main body and a pump device, sucks water from a part of the pool main body or another water source, and jets the water horizontally along the water surface to In a pool configured to form a flow of water on the surface portion, the injection of water is performed at a constant injection speed within a predetermined horizontal width or in a state in which it can be arbitrarily changed, and A track is installed at a predetermined height position along the pool contour coast including the upper part, and the track is equipped with an automatic running body equipped with a skier towing rope whose free end is a grip portion, and the automatic running body, We have invented a water skiing practice and recreational pool characterized by providing reciprocating movement at a controlled speed and stopping at an arbitrary position, and filed as Japanese Patent Application No. 4-101538.

[0004]

However, the water flow in the former water ski practice pool described in Japanese Patent Publication No. Sho 49-38540 creates a fluid flow in a certain direction in the tank, and one end thereof is fixed. By just pulling the skier with a rope, the pulling position is constant, so you can not practice or enjoy the rising start of the water ski's gliding start, and at the stationary position on the fluid surface with flow, Despite the fact that the ski can change slightly to the left or right, it is only a simple fluid surface gliding when the ski is oriented in a direction substantially parallel to the flow, and can be experienced and enjoyed on a real water ski. There was a problem to be solved in that the ski cannot practice and enjoy the so-called slalom, which crosses the water stream due to the change in direction and the difference in direction of flow.

In the latter invention, since the water flow direction with respect to the pulling direction is substantially changed, various operations of the water ski, for example, rising, advancing, slalom, etc. can be carried out. Although it is superior to the one described above, it changes the traction direction while keeping the water injection position and direction constant, and forms a substantially changing water flow.Therefore, a track is installed at a predetermined height position along the pool contour coast, There was a problem in that the track had to be equipped with an automatic traveling body equipped with a skier towing rope whose free end became a grip portion, and the equipment would be a large scale.

The present invention provides a water flow forming method in which one end of a rope for pulling a skier is fixed, the jetting direction is changed, the start of a gliding start, the normal water gliding state and slalom can be practiced and enjoyed. It is provided to allow the construction of a water skiing practice and recreational pool with simple equipment.

[0007]

In order to solve the above-mentioned problems, the present invention utilizes a pool body in a full state and a pump device, and the pump device causes water to flow from a part of the pool body or another water source. In the water ski practice pool in which the water flow is formed at least in the water surface portion of the pool by the injection means that sucks in and injects the water in a substantially horizontal direction below the water surface, The forward and reverse rotation drive control means of the injection means are used to impart a slow rotation change and stop that moves in a fan shape in the horizontal direction, and one end of the skier towing rope is attached to a part of the pool body upstream of the water flow. The skier grips the free end of the rope as a gripping part and lifts the ski above the fluid surface, whereby Planing on a fluid surface that is intended to and forming a water flow so slalom can be performed.

[0008]

According to the water ski forming method of the water ski pool of the present invention having the above-described structure, the direction of water injection is controlled by the forward / reverse rotation drive control means of the injection means to slowly change the rotation in the horizontal direction and stop. By allowing one end of a rope for pulling a skier to be fixed to a part of the pool and allowing the skier to grip the free end of the rope as a grip portion, It is possible to rise by applying the flow to the skier, which allows the skier to float on the fluid surface and form a gliding state, and the traction direction and the flow direction differ as the injection direction changes. Therefore, by changing the ski with respect to the flow, it is possible to form a so-called slalom posture in which the ski crosses the water flow.

[0009]

EXAMPLES The present invention will be described with reference to Examples. A pool body in a full state and a pump device are used, and the pump device sucks water from a part of the pool body or another water source and puts it under the water surface. By means of the jetting means, which is arranged and can be rotated by fan-shaped forward and backward horizontal rotations under the water surface and stopped, jetted from a jetting nozzle having a large number of horizontal jet holes and jetted in a substantially horizontal direction below the water surface. , At least to form a flow of water on the water surface in the pool. The fan-shaped forward / backward horizontal rotation of the ejecting means is performed by connecting a turntable having a pump device directly connected to the ejecting means mounted and fixed thereto with a drive reduction motor to form a four-bar rotation chain. It can also be done by directly decelerating the motor, or directly rotating the water wheel that can reciprocate forward or backward (the collision of the fountain of the fountain with the propeller can be switched between left and right) directly to the spindle tube of the injection means. The means of can be adopted.

[0010]

When practicing in the water ski practice pool adopting the above-described water flow forming method according to the present invention, the jet direction in the jet portion slowly moves in a fan shape in the horizontal direction by the forward / reverse rotation drive control means. Therefore, one end of the rope for pulling the skier is fixed to a part of the pool main body upstream of the water flow, and the skier grips the free end of the rope as a grip portion, By levitating on the fluid surface, the skier can experience the rising at the beginning of sliding on the fluid surface with the flow by the injection means, the sliding state, and the water flow direction changes with respect to the ski pulling direction. You can practice and enjoy the so-called slalom, where skis cross the stream alternately left and right.

Further, since the water flow forming method changes the jetting direction when one end of the skier pulling rope is fixed, a water skiing practice / amusement pool with inexpensive and simple equipment can be constructed.

Claims (3)

[Claims] 1. A pool body that is full of water and a pump device are used, the pump device sucks water from a part of the pool body or another water source, and jets the water in a substantially horizontal direction below the water surface. In the water ski practice pool in which the water flow is formed at least on the water surface portion in the pool by the jetting means, the jetting means is moved in the horizontal direction by the forward / reverse rotation drive control means in the jetting direction of the water. A slow rotation change and a stop are made to move in a fan shape, and one end of the skier towing rope is fixed to a part of the pool body upstream of the water flow, and the free end of the rope is used as a grip portion. The skier grips and floats the ski above the fluid surface so that the skier can slide and slalom on the fluid surface with the flow by the jetting means. A method for forming a water flow in a water skiing exercise pool, which comprises forming a water ski. 2. The water flow forming method for a water ski practice pool according to claim 1, wherein the forward / reverse rotation drive control means is controlled at a grip portion which is a free end of the skier towing rope or at a control panel. . 3. The water flow forming method for a water ski practice pool according to claim 1, wherein the forward / reverse rotation drive control means comprises a forward / reverse rotation motor or a forward / reverse rotation water turbine.