JPH0531420A - Sprinkling device for gliding way for artificial skiing ground - Google Patents

Abstract

PURPOSE:To execute sprinkling by uniform hydraulic pressure extending over the whole surface of a gliding way without adjusting hydraulic pressure from a feed water source, and also, not to make the device large in size, and moreover, to execute sprinkling without obstructing gliding of a skier. CONSTITUTION:A gliding way 12 is formed, and to plural plastic pipes 16 combined with feed water lines, water is supplied from plural feed water tanks 36 which are installed at an interval along an inclination of a gliding way 12 and have the mutually same head, respectively. In such a way, to each plastic pipe 16, water is supplied to have almost the same nozzle head water pressure, thus sprinkling is executed by uniform hydraulic pressure.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a device for sprinkling water on a sliding surface of a plastic mat on a runway of an artificial ski resort.

[0002]

2. Description of the Related Art Conventionally, various artificial ski runways made of plastic mats have been proposed. A typical plastic mat is, for example, Jitsuko Sho 51-517.
As described in Japanese Patent No. 36,36, it is composed of a plastic mat main body formed by integrally connecting a plurality of frames each having a space inside and a large number of flexible small columnar projections on the upper surface. .

Further, the present applicant has proposed another plastic mat in a separate application, and this plastic mat is a mat formed by combining a plurality of plastic pipes having irregularities on the surface in a blind shape. Made of body.

All plastic mats are required to be sprinkled with water in order to improve the sliding property of their sliding surfaces. Prior art sprinklers consist of a sprinkler that sprinkles water from both sides of the runway or a water channel installed in the runway, which sprinkler or water channel is connected to a water source.

[0005]

However, since the sprinkler type sprinkler device has to sprinkle water over a long distance, a large pump and a thick pipeline are required, which makes the device large-scaled and the skier does not need water during sprinkling. It had the drawback of not being able to glide. In addition, in both the sprinkler type and the water supply type in the runway, water is supplied from one water supply source (pump) to all the watering parts, so the head pressure differs depending on the position of the slope of the runway.
Therefore, the water sprinkling condition is good at the lower part of the slope, but the sprinkling condition becomes worse at the upper part of the slope, so that water pressure adjusting means for adjusting the water pressure in accordance with the position of the slope is required, which complicates the structure of the water sprinkler. There was a drawback.

The object of the present invention is to avoid the above-mentioned drawbacks, to spray water over the entire surface of the runway at a uniform water pressure without adjusting the water pressure, and also to prevent the size of the device from increasing, and to provide a skier. PROBLEM TO BE SOLVED: To provide a watering device for a runway for an artificial ski resort, which is capable of watering without disturbing the skiing of the ski.

[0007]

In order to solve the above-mentioned problems, the present invention comprises a water supply system installed in a plastic mat for sprinkling water on the sliding surface of this mat, and this water supply system comprises a water supply source and this In a watering device for an artificial ski runway consisting of a water supply channel having water sprinkling holes that are supplied with water from a water supply source, the water supply source is provided at intervals along the slope of the runway and supplies water by a drop. An object of the present invention is to provide a watering device for an artificial ski runway, which comprises a plurality of water tanks, each water tank being connected to a water path in a correspondingly inclined position.

[0008]

In this way, the water supply source is composed of a plurality of water supply tanks which are provided at intervals along the slope of the runway and supply water by the drop, and each water supply tank is connected to the water supply path at the corresponding inclined position. And, since each water supply channel is supplied with substantially the same head pressure, there is no need for water pressure adjusting means,
Water can be sprayed with a uniform pressure over the entire surface, and since the water spray is not of a scrambler type, it is sprayed with a small pressure directly in the surface, so that water can be sprayed without disturbing the skier's running.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings, an embodiment of the present invention will be described in detail. FIGS. 1 to 3 show an embodiment of an artificial ski runway 12 equipped with a watering device 10 according to the present invention. The artificial ski runway 12 is composed of a plastic mat 14, but in this embodiment, the plastic mat 14 is formed by combining a plurality of plastic pipes 16 in a blind shape. Has unevenness 18 on the surface. The plastic pipe 16 is preferably made of polyethylene, which has excellent elasticity, impact resistance and abrasion resistance, and is slippery. The plastic pipe 16 may have a circular cross section, a semicylindrical cross section, a triangular cross section, or any other cross section.

In the illustrated embodiment, as shown in FIGS. 1 and 3, a spacer 20 made of rubber or plastic having elasticity is sandwiched between a plurality of plastic pipes 16 at intervals in the longitudinal direction. Further, these plastic pipes 16 are combined like a blind by a connecting member 22 such as a wire. This connecting member 22 is used to fix the sliding mat 14 by fixing it to a pile driven into the ground when the mat is later laid on an artificial ski resort. The diameter of the plastic pipe 16 and the interval between the adjacent plastic pipes 16 can be appropriately set according to the purpose of use. In particular, where there is a lot of snow, it is preferable to increase the interval between the plastic pipes 16 so that the snow that has accumulated does not slip off.

Unevenness 18 on the surface of the plastic pipe 16
As shown in FIG. 1, a plurality of ring-shaped projections 24 are formed at intervals in the longitudinal direction of the plastic pipe 16.
However, the unevenness 18 can be formed in any other suitable form.

As shown in FIG. 3, the sprinkler device 10 of the present invention comprises a water supply system 28 installed in a plastic mat 14 for sprinkling water on the sliding surface of the mat 14. The water supply system 28 includes a water supply source 30 and a water supply passage 34 having water spray holes 32 through which water is supplied from the water supply source 30 and sprays water. In the embodiment of FIGS. 1 to 4, the plastic pipe 16 itself is the water supply passage 3 of the sprinkler 10.
The water for sprinkling is also supplied to the inside of the nozzle 4 as well. Therefore, the plastic pipe 16 is shown in FIG.
As shown in FIGS. 3 and 4, a large number of water spray holes 32 are provided at intervals in the longitudinal direction.

In the watering device for the runway for an artificial ski resort according to the present invention, a plurality of water sources 30 are provided at intervals along the slope of the runway 12 to supply water by the same head, as can be seen from FIG. Of water supply tanks 36, and each water supply tank 36 is connected to a plastic pipe 16 which is a water supply passage in a corresponding inclined position. Each water tank 3
An electromagnetic valve 38 is provided between the plastic pipe 16 and the water supply passage 34.
Are opened and closed at appropriate intervals by a timer (not shown). In addition, each water supply tank 36 has a ball tap 4
Therefore, each water supply tank 36 is set so as to maintain a predetermined water level when water is supplied by a pump (not shown).

Next, referring to the use state of the runway 12 provided with the sprinkler device 10 of the present invention, in the illustrated embodiment, in the runway mat 14, the axis of the plastic pipe 16 is orthogonal to the inclination of the runway 12. It is laid in a state, and a water supply tank 36 is connected to every plastic pipe 16. The electromagnetic valve 38 of each water supply tank 36 is opened and closed at appropriate time intervals by a timer. Therefore, the water supply channel 3
The plastic pipe 16 of No. 4 is water-supplied at a predetermined pressure from the water supply tank 36 at an appropriate time interval by a drop, and is sprinkled from the water spray holes 32 of each plastic pipe 16.

Each water tank 36 is 500 m from the installation position of the corresponding plastic pipe 16 in order to obtain a head.
It is preferably installed at a height of m or more. Also, the height of the water spouting from each sprinkling hole 32 (sprinkling height)
Is 300 to 400 mm, it does not hinder the skier's gliding, so the head and the size of the water spray holes 32 are set so that the water spray height becomes such a value. The time interval for watering (watering interval) can be changed depending on the weather conditions, the number of skiers, and the like, but it is optimal that the time interval is such that watering is performed immediately before the running surface dries.
In the above embodiment, all the plastic pipes 16
Although the water supply tank 36 was connected for each, the water supply tank 36 may be connected to every other plastic pipe 16 or every other plastic pipe 16. When the water spray hole 32 is clogged by the skier's sliding, the water spray hole 32 can be drilled at another position of the plastic pipe 16 to continue water spraying.

5 to 7 show another embodiment of the present invention, in which the runway 12 comprises a frame-shaped plastic mat 40, which has a space 42, 42 inside. And a plurality of frames 46, 46 'having a plurality of flexible columnar protrusions 44, 44' on the upper surface thereof.
It is made up of a mat body formed by integrally joining the two. In this case, the water supply passage 34 is composed of a plastic pipe 48 dedicated to water supply, which is separate from the plastic mat 40, and the plastic pipe 48 dedicated to water supply is attached below the mat main body across the mat body. The water spray holes 32 are provided so as to open at the positions of the spaces 42, 42 ′ of the mat 40.

The plastic pipes 48 are provided at intervals along the slope of the runway 12, and the plastic pipes 48 are also installed at intervals along the slope, respectively, and corresponding water tanks for supplying water at the same head. It is connected to 36.

Also in this embodiment, each plastic pipe 4
Since water is supplied from the water supply tank 36 at the same water head pressure to No. 8, water can be sprayed at the same water pressure regardless of the position of inclination. In FIG. 5, reference numerals 46a and 46'a are coupling projections for mat coupling, and reference numerals 46b and 46'b are coupling recesses into which the coupling projections 46a and 46'a are engaged, and these coupling projections 46a. , 46'a and connecting recesses 46b, 4
6'b are engaged with each other and adjacent mats 40 are connected.

[0019]

According to the present invention, as described above, a plurality of water tanks having the same head are installed in the water supply passage of the plastic mat forming the runway at intervals along the slope of the runway. Since the water is supplied from the same level, each water supply channel is supplied with almost the same head pressure, so there is no need for water pressure adjustment means, and water can be sprayed at a uniform pressure over the entire surface of the runway. Since it is not a puller type and water is sprayed directly on the running surface with a small pressure, there is a practical advantage that water can be sprayed without disturbing the skier's running.

[Brief description of drawings]

FIG. 1 is a plan view of a runway for an artificial ski resort equipped with a watering apparatus according to the present invention.

FIG. 2 is a schematic side view of the water sprinkler of the present invention.

FIG. 3 is a schematic front view of a water supply system for one water supply channel.

FIG. 4 is an enlarged cross-sectional view of a plastic pipe used in the water supply system of FIGS. 1 to 3.

FIG. 5 is a plan view of a part of an artificial ski runway according to another embodiment of the present invention.

6 is a side view of the artificial ski runway of FIG. 5. FIG.

FIG. 7 is a front sectional view of the runway for artificial ski resort of FIG.

[Explanation of symbols]

 10 Water Sprinkler 12 Artificial Ski Runway 14 Plastic Mat 16 Plastic Pipe 18 Roughness 20 Spacer 22 Connecting Member 24 Ring-shaped Protrusion 26 Cavity 28 Water Supply System 30 Water Supply Source 32 Water Sprinkling Hole 34 Water Supply Channel 36 Water Supply Tank 40 Plastic Mat 42 Space 42 'Space 46 Frame 46' Frame 48 Plastic Pipe

Claims (1)

Claim: What is claimed is: 1. A water supply system installed in a plastic mat for sprinkling water on a sliding surface of the mat, the water supply system including a water supply source and a water supply hole for supplying water from the water supply source. In the watering device for the runway for artificial ski resort, the water source comprises a plurality of water tanks that are provided at intervals along the slope of the runway and supply water by a drop, each water tank. Is a watering device for an artificial ski runway, characterized in that it is connected to a water supply channel on a corresponding slope.