JP6321865B1 - Artificial grass ground with watering system - Google Patents

Abstract

Provided is an artificial turf ground with a watering system that can reduce labor and cost during construction and maintenance of the watering system and that can cool the artificial turf ground effectively without any troubles such as competition. In an artificial turf ground with a watering system according to the present invention, a water supply pipe is disposed in a groove provided on the surface of a base, and an artificial lawn is installed on the base and connected to the water supply pipe. When water is supplied to the sprinkling flexible nozzle 50, water drops are spouted from the spout 59 while the tube 54 of the sprinkling flexible nozzle 50 vibrates at random, and is sprinkled. [Selection] Figure 1

Description

  The present invention relates to an artificial turf ground with a watering system.

  Generally, a watering device used for watering a lawn ground has a water supply pipe embedded in a base made of asphalt concrete or the like located under the lawn ground surface, and a nozzle connected to the water supply pipe. Yes. And if water is supplied to the said water supply pipe from a water supply source, water will be ejected from the front-end | tip of the said nozzle, and watering will be performed.

  Patent Literature 1 describes the following technique as a field watering device. That is, a water supply pipe connected to the water supply pump is buried deep in the base, and a movable watering head is attached to the water supply pipe. When watering is not performed, the watering head is deeply buried in the base. When watering, the watering head floats on the ground due to the water pressure of the water supply pump, and water is ejected from the watering head.

  Patent Document 2 describes the following technique as a spray device in a system for controlling a ground environment. That is, a water supply pipe connected to the water supply pump is buried deep in the base, and a rising pipe reaching the base surface is attached to the end of the water supply pipe. A fine mist spray nozzle is attached to the tip of the riser tube. When spraying, water is supplied from the water supply pump to the water supply pipe, and water is diffused as fine mist from the fine mist spray nozzle through the riser pipe.

JP-A-8-242710 JP 2006-177130 A

  However, the present inventors have recognized that the watering device described in Patent Document 1 and the spray device described in Patent Document 2 have the following problems.

  In the watering device described in Patent Document 1, the water supply pipe is embedded deep in the base, and the watering head is also deeply embedded in the base when watering is not performed. In the spray device described in Patent Document 2, the water supply pipe and the riser pipe are embedded in the base. Therefore, when constructing a watering system as described above on an existing lawn ground, it is necessary to dig up the base and perform piping work to bury the water supply pipe, watering head, riser pipe, etc. It takes. In addition, it is necessary to dig up the base during maintenance of the watering head and the fine mist spray nozzle, which also requires labor and cost.

  Moreover, in the watering apparatus of patent document 1, when watering, a watering head floats on the ground. Therefore, when watering, the use of the ground must be interrupted, which causes problems such as competition.

  Moreover, in the spraying apparatus described in Patent Document 2, water is diffused as a fine mist from the fine mist spray nozzle. Here, there is a problem that fine fog is easily affected by wind and inferior in cooling effect. Furthermore, when spraying fine mist, compared with the case where water is sprinkled, there is a problem that the water spray area is as narrow as about 1 to 1.5 m in radius and the ground cannot be cooled effectively.

  In view of the above problems, the present invention can reduce labor and cost during construction and maintenance of a watering system, and can further effectively cool an artificial turf ground without any trouble such as competition. The purpose is to provide a ground.

The gist configuration of the present invention for solving the above-described problems is as follows.
(1) a base provided with a groove on the surface or provided with a passage extending directly below the surface and extending parallel to the surface;
Artificial lawn having a base fabric installed on the base, a plurality of piles planted on the base fabric, and a packed bed in which particulate matter is filled between the plurality of piles on the base fabric When,
A water supply pipe having a socket disposed in a groove or passage of the base;
A water spray flexible nozzle connected to the water supply pipe;
Have
A branch passage that opens to the surface of the base at the position of the socket is branched from the passage,
The flexible nozzle for watering is
A connecting pipe having a first flow path connected to the socket and communicating with the flow path of the water supply pipe;
A plate-like base portion having a second flow path extending from the connecting portion and communicating with the first flow path;
A tube extending from the plate-like base, having a third flow channel communicating with the second flow channel inside, and having a tip serving as a spout,
The flexible nozzle for watering extends from the groove or the branch passage and penetrates the base cloth, at least a part of the plate-like base is fixed in the filling layer, and at least a part of the tube is Protruding from the packed bed,
By supplying water from the water supply pipe to the flexible nozzle for sprinkling, water drops spout from the spout while the tube vibrates randomly, and turbulent water spraying onto the artificial lawn is possible. An artificial turf ground with a sprinkler system.

  (2) The artificial turf ground with a watering system according to the above (1), further comprising a protective pipe that divides the passage and the branch passage, and the water supply pipe is disposed in the protective pipe.

  The artificial turf ground with a watering system of the present invention can reduce labor and cost during construction and maintenance of the watering system, and can cool the artificial turf ground effectively without any troubles such as competition.

It is a schematic cross section of artificial turf ground 100 with a watering system by a 1st embodiment of the present invention, and also shows the state where a water droplet spouts from jet outlet 59, while tube 54 vibrates at random. It is a top view of the artificial turf ground 100 with a watering system shown in FIG. (A) is a top view of the flexible nozzle 50 for watering in FIG. 1, (B) is the side view, (C) is a suitable front-end | tip of the tube of the flexible nozzle for watering. It is a perspective view which shows a shape. (A)-(C) are process drawings explaining the construction method of the artificial turf ground 100 with a watering system of FIG. (D)-(E) is process drawing explaining the construction method of the artificial turf ground 100 with a watering system of FIG. 1 following FIG. 4-1 (A)-(C). (A) is a schematic cross section of the artificial turf ground 200 with a watering system by the 2nd Embodiment of this invention, (B) is II sectional drawing of (A). It is a schematic cross section of the artificial turf ground 300 with a watering system by the 3rd Embodiment of this invention. It is a schematic cross section of the artificial grass ground 400 with a watering system by the 4th Embodiment of this invention, and the procedure of construction is also shown in the figure.

(Artificial grass ground with watering system according to the first embodiment)
With reference to FIG. 1, the artificial turf ground 100 with a watering system by the 1st Embodiment of this invention is demonstrated. The artificial turf ground 100 with a watering system includes a base 10, an artificial lawn 30, a water supply pipe 40, and a watering flexible nozzle 50.

(Base)
Referring to FIG. 1, a base 10 in this embodiment is an asphalt concrete base. However, the board | substrate in this invention will not be specifically limited if the surface can be formed in a flat surface, For example, in addition to asphalt concrete, it can also form by permeable concrete placement. The base 10 can also be a crushed stone formed from crushed stone and a caking agent. For example, the crushed stone is connected in a mesh form with a fixing agent to be consolidated and integrated, and then the surface is flattened. be able to. In this case, using a large-sized crushed stone body and a small-diameter crushed stone body smaller than this as a crushed stone, after laying the large-diameter crushed stone body, laying the small-diameter crushed stone body, It is preferable to connect them in a mesh shape and consolidate them together. Thereby, the surface of the board | substrate 10 can be made more flat. As the caking agent, a synthetic resin-containing aqueous binder or a synthetic resin-containing solvent-based binder can be suitably used. As the latter, for example, a urethane binder in which a solvent is contained in a urethane resin can be used. The base 10 is not limited to those made of alphast concrete or crushed stone as described above, and may be formed by other methods such as forming on the surface of clay paving or dust paving if the shape is flat and does not change. Good.

  With reference to FIG. 1, a groove 12 is provided on the surface of the base 10, and a water supply pipe 40, which will be described later, is fitted and disposed in the groove 12. The width, depth, shape, and the like of the groove 12 are not particularly limited as long as the water supply pipe 40 can be fitted and arranged, and may be appropriately set in consideration of the dimensions of the water supply pipe 40. For example, as shown in FIG. 1, the groove 12 has a U-shaped cross-section perpendicular to the extending direction, which is composed of a groove bottom made of a horizontal surface and a groove side wall made of a vertical surface extending from both ends of the groove bottom. It can be a groove. In this case, it is preferable that the groove width be larger by about 10 to 30 mm than the outer diameter of the water supply pipe 40. In this embodiment, the groove depth is set to D or more and (D + 20 mm) or less, where D is the outer diameter of the water supply pipe 40. Thus, the socket 42 connected to the water supply pipe 40 straddles the upper end of the groove (that is, the surface position of the base 10), and the upper end of the water supply pipe 40 is close to the surface position of the base 10. 12 is difficult to sink.

(Artificial lawn)
With reference to FIG. 1, the artificial lawn 30 is installed on the base 10. The artificial lawn 30 is formed by filling a base cloth 32 installed on the base 10, a plurality of piles 34 planted on the base cloth 32, and a particulate material between the plurality of piles 34 on the base cloth 32. And a filling layer 36.

  The type of the base cloth 32 is not particularly limited, and a base cloth used for a general artificial lawn can be preferably used. For example, a plain woven cloth made of polypropylene or polyethylene can be mentioned, but the material and weaving can be used. The direction may be changed, a nonwoven fabric may be used, and other sheet bodies may be used. Further, a backing material (not shown) for fixing the pile 34 to the base cloth 32 such as styrene / butadiene rubber (SBR) is provided on the back surface of the base cloth 32. Further, as shown in FIG. 1, the base cloth 32 and the backing material in the present embodiment are provided with holes for allowing a socket 42 described later to pass therethrough in advance.

  As the pile 34, an arbitrary or known artificial turf pile can be used, for example, one or a combination of two or more selected from a monofilament pile, a film yarn pile, a slit yarn pile, and a split yarn pile Can do. The material of the pile 34 is not particularly limited, and various synthetic resins such as olefin synthetic resins such as polyethylene and polypropylene, polyamide, polyvinylidene chloride, and polyester can be suitably used. The planting density of the piles 34 is not particularly limited, and may be set as appropriate as in the past.

  The thickness of the filling layer 36 is not particularly limited, but is preferably 40 mm or more from the viewpoint of competitiveness. The upper limit of the thickness of the filling layer 36 is not particularly limited, but is about 50 mm in consideration of the pile length of a general artificial grass. Moreover, it is preferable that the height of the pile 34 is a height at which the pile 34 protrudes from the surface of the filling layer 36 by about 10 to 30 mm.

  The material and particle size of the granular material constituting the packed bed 36 are not particularly limited, and any known or known artificial turf granular material can be used. For example, one or a mixture of two or more selected from natural or synthetic rubber chips, foamed or non-foamed synthetic resin granules, cork chips, various elastic granules such as pulverized tires, and sand such as dredged sand. Can do.

  From the viewpoint of suppressing the temperature increase of the surface of the artificial turf ground, and from the viewpoint of imparting appropriate stickiness and shock absorption to the packed bed, the granular material constituting the packed bed 36 may be the above-mentioned elastic granular material and / or sand. In addition, it is preferred to include mesocarp powder of palm plant fruits. In addition, the mixing ratio of the powder, sand, and elastic granular material can be appropriately set from the viewpoint of obtaining a desired impact absorbability.

  As an embodiment of the powder, a powder obtained by pulverizing the mesocarp of coconut fruit can be mentioned. Coco fruit is covered with a hard shell called pericarp. There is a relatively soft mesocarp inside the outer pericarp and an inner pericarp further inside. Inside the endosperm is a solid endosperm layer, and the space near the center contains liquid endosperm. In this embodiment, powder obtained by collecting and pulverizing only the mesocarp is used.

  An example of the method for producing the powder will be described. First, coconut fruits are soaked in water for a certain period to remove salt and potassium. Thereafter, mesocarp is collected from the coconut fruit. The collected mesocarp is pulverized into a powder. Thereafter, the obtained powder is passed through a sieve having a predetermined opening to remove the fibrous mesothelium from the powder. Thus, the powder used by this embodiment can be manufactured. In order to adjust the moisture content in the powder, the collected mesocarp or the pulverized powdered mesocarp may be dried under appropriate conditions.

  The maximum particle size of the powder is preferably 6.0 mm or less, and more preferably 2.0 mm or less. This is because the granular material filled between the piles 34 of the artificial lawn is generally suppressed to a particle size of 6.0 mm or less. The mesh opening of the sieve to be applied to the powder is preferably in the range of 0 mm to 9.5 mm. By doing in this way, the average particle diameter D50 of powder can be 1.0 mm or less.

  The water content of the powder is preferably 15 to 50% by mass. If it is 15 mass% or more, high temperature can fully be suppressed and caking property fall can be prevented. If it is 50 mass% or less, the caking property fall can be prevented.

  The above powder is not limited to a powder obtained by pulverizing the mesocarp of coconut fruit, and the same effect can be obtained by pulverizing the mesocarp of a fruit of a palm plant such as date palm, oil palm, and sago palm.

  As said sand, it is preferable to use at least dredged sand, and it is more preferable to use dredged sand alone. Since cinnabar is hard to consolidate, it is easy to maintain the high shock absorption obtained by combining with pulverized coconut fruit mesocarp. Moreover, it is preferable also from a viewpoint of maintaining drainage and maintaining water retention by voids.

  Examples of the sand (namely, debris having a particle size of 1/16 to 2 mm) include crushed stone, river sand, mountain sand and the like using various rocks as a raw material in addition to dredged sand. However, river sand and mountain sand generally contain silt, clay, and organic matter (such as animal and plant septics) at the stage immediately after collection. It is preferable to do.

  The particle size distribution of the sand is not particularly limited, but the particle size variation is preferably small and is preferably in the range of 1 to 2 mm. For example, in the case of dredged sand, JIS standard sand No. 2 dredged sand, No. 3 dredged sand, and No. 4 dredged sand are preferably used in combination of two or more kinds.

  The elastic granular material can be selected, for example, with a sieve having an opening of 1 to 3 mm.

  In addition, when the granular material constituting the filling layer 36 can grow and / or support natural turf, seeds are sprayed or filled in the filling layer 36, or seedlings are planted in the filling layer 36 and filled. Natural turf may be grown on the layer 36, and the artificial turf 30 may be a natural turf composite artificial turf. For example, in the case of a packed bed containing powder and sand obtained by pulverizing the mesocarp of a palm plant fruit as described above, natural turf can be grown. As the packed bed 36, a fertilizer for growing natural turf may be further mixed. By making the artificial turf 30 a natural turf compound artificial turf, it is possible to expect an improvement in the competitiveness, such as the striking of spikes.

  The type of natural turf is not particularly limited. Examples of summer turf include Bermudagrass such as Tifton, Nosiba and Kouraishiba, and winter turf includes bentgrass, ryegrass, bluegrass such as Kentucky, and fescue. 1 type selected from these, or it can be set as the combination of 2 or more types.

(Water supply pipe)
Referring to FIG. 1, the water supply pipe 40 is disposed in the groove 12 provided on the surface of the base 10. In the present embodiment, it is important that the water supply pipe 40 is not embedded in the base 10 as described above. Thereby, the effort and cost at the time of construction and maintenance of a watering system can be reduced. Further, the water supply pipe 40 has an upward socket 42 for connecting a flexible nozzle 50 for watering to be described later. The socket 42 is inserted through a hole provided in advance in the base fabric 32.

  The water supply pipe 40 is connected to a water supply source. It does not specifically limit as a water supply source, For example, the tap of a general water supply with a low water pressure may be sufficient. From the viewpoint of further increasing the amount of water supplied to the water supply pipe and the water pressure, it is preferable to use a water supply pump 44 driven by a motor or the like as shown in FIG. In this embodiment, the watering behavior of water droplets can be controlled by appropriately adjusting the water amount and water pressure, and the shape and material of the watering flexible nozzle 50 described later.

  The dimensions, length, and arrangement method or arrangement interval of the water supply pipe 40 are appropriately determined in consideration of the size of the artificial turf ground and the size of the water spray area from the single water spray flexible nozzle 50. Can be set. Similarly, the number and interval of the sockets 42 can be appropriately set in consideration of the size of the artificial turf ground and the size of the water spray area from the single water spray flexible nozzle 50. For example, as the water supply pipe 40, a vinyl pipe or a vinyl hose having a diameter of about 6.0 to 15.0 mm can be used.

(Flexible nozzle for watering)
Referring to FIGS. 3A and 3B and FIG. 1, the watering flexible nozzle 50 includes a connecting pipe 56 connected to the socket 42, a plate-like base 52 extending from the connecting pipe 56, and a plate-like shape. A tube 54 extending from the base 52 and having a tip serving as a spout 59. The sprinkling flexible nozzle 50 is connected to the water supply pipe 40 by connecting the connecting pipe 56 to the socket 42. In the present embodiment, the water spray flexible nozzle 50 extends from the groove 12 and penetrates the base cloth 32 at the connecting pipe 56, and the entire plate-like base 52 is fixed in the filling layer. Almost entirely protrudes from the packed bed 36.

  In the present embodiment, as shown in FIG. 1, it is important that the watering flexible nozzle 50 is not embedded in the base 10 and that the tube 54 is not completely embedded in the filling layer 36. Thereby, the effort and cost at the time of the maintenance of the flexible nozzle for watering can be reduced. Further, since the tube 54 protrudes from the packed bed 36, the turbulent water described below becomes possible.

  When water is supplied from the water supply pipe 40 to the flexible nozzle 50 for watering, first, water flows out in a columnar shape from the outlet 59 at the tip of the tube 54. When the amount of water and the water pressure are gradually increased, the tube 54 oscillates randomly as shown in FIG. 1 with a certain value as a boundary. Splashing water to the turf ground is possible. The area where the water can be sprinkled depends on the amount of water supplied from the water supply source and the water pressure. For example, when a water supply pump is used, a radius of 3 m at the maximum with respect to the installation position of the watering flexible nozzle 50 is used. Water droplets are scattered in the region of the degree. Thereby, the artificial turf ground can be cooled effectively. In addition, the water droplet in this invention has a particle size of at least 100 micrometers or more, and is a thing larger than a mist. Therefore, in this invention, compared with the case where fog is used, there is little influence of a wind.

  Regarding the amount of water and the water pressure during turbulent watering, the amount of water is preferably 0.3 to 1.0 L / min for each nozzle, and the water pressure is 0.1 to 0.5 MPa at the closest part to the nozzle in the water supply pipe. It is preferable to do. If the water volume and water pressure are above the lower limit, stable turbulent water spraying is easy to achieve, and if the water volume and water pressure are below the upper limit value, even if water spraying continues for a long time, the tip wear due to excessive nozzle vibration is suppressed, and This is because the function of the system can be maintained.

  Hereinafter, with reference to FIGS. 3A, 3B, and 1 as appropriate, an example of the material and shape of the watering flexible nozzle 50 that realizes such watering behavior will be described.

  First, as shown in FIG. 1, the watering flexible nozzle 50 realizes a random watering behavior and is flexible enough not to hinder competition or the like even if the tube 54 protrudes from the filling layer 36. It is important to have The specific material is not particularly limited as long as it has such flexibility, and examples thereof include olefin synthetic resins such as polyethylene and polypropylene, and various synthetic resins such as polyamide, polyvinylidene chloride, and polyester. .

  The shape of the connecting pipe 56 is not particularly limited as long as it can be connected to the socket 42. As an example, the connecting pipe 56 shown in FIGS. 3A and 3B can be given. The connection pipe 56 is a cylindrical pipe having an outer diameter larger than that of the tube 54, and a first flow path 58 </ b> A for communicating with the flow path of the water supply pipe 40 and allowing water from the water supply pipe 40 to pass therethrough. Partitioned. From the viewpoint of securing the strength of the connecting pipe 56, the outer diameter of the pipe is preferably 5.5 to 6.5 mm, and the inner diameter is preferably 2.5 to 3.5 mm.

  Referring to FIGS. 3A and 3B, in the plate-like base portion 52, in order to flow the water supplied from the water supply pipe 40 through the connecting pipe 56 to the tube 54, the first flow path 58A is provided inside. A second flow path 58B communicating with the second flow path 58B is partitioned. The shape and diameter of the second flow path 58B are not particularly limited, but can be the same as the flow path 58C provided in the tube 54 described later.

  The shape of the plate-like member is not particularly limited, and can be appropriately designed from the viewpoint of facilitating fixing of the watering flexible nozzle 50 in the packed bed 36. As an example, the plate-like base portion 52 shown in FIGS. 3A and 3B is a plate-like member having a first plate-like portion 52A on the connecting tube 56 side and a second plate-like portion 52B on the tube 54 side.

  In the plan view of FIG. 3A, the first plate-like portion 52A preferably has a width in the direction perpendicular to the extending direction of the tube 54 of 10.0 to 18.0 mm from the viewpoint of the above-described fixation. . 3B, the thickness of the first plate-like portion 52A is the same as the outer diameter of the tube that is the connecting portion 56. However, the thickness gradually decreases from the middle toward the second plate-like portion 52B.

  Next, in the plan view of FIG. 3A, the second plate-like portion 52 </ b> B can have a tapered shape in which the width in the direction perpendicular to the extending direction of the tube 54 gradually decreases toward the tube 54. Further, as shown in FIG. 4B, the thickness of the second plate-like portion 52B can be the same as the outer diameter of the tube 54 described later.

  3A and 3B, the tube 54 is supplied with water supplied from the water supply pipe 40 via the connecting pipe 56 and the plate-like base 52 as water droplets from the jet outlet 59 at the tip of the tube 54. In order to eject, the 3rd channel 58C connected with the 2nd channel 58B inside is divided. From the viewpoint of realizing the turbulent water spray behavior as described above, and ensuring that the tube 54 is mixed in the pile while ensuring its strength, the outer diameter of the tube 54 is 1.0. The inner diameter of the tube 54 can be about 0.8 to 2.0 mm, and the length of the portion of the tube 54 that protrudes from the filling layer 36 is 10.0 to It is preferable to set it as 30.0 mm.

  From the viewpoint of ejecting water droplets from the ejection port more randomly, the shape of the tip of the tube 54 is preferably a semi-cylindrical shape having a length of 1.0 to 20.0 mm as shown in FIG. By adopting such a shape, it becomes easy for water droplets to be ejected randomly from the tip of the tube 54 in all directions.

  According to the artificial turf ground with a watering system 100 of the present embodiment described above, water is supplied from the water supply pipe 40 to the flexible nozzle 50 for watering so that the water drops from the outlet 59 while the tube 54 vibrates randomly. Erupts and turbulent water spray on the artificial lawn 30 is possible. Therefore, the artificial lawn 30 can be effectively cooled. Moreover, since the water supply pipe 40 is provided in the groove 12 without being embedded in the base 10, and the flexible nozzle 50 for watering is also disposed without being embedded in the base 10, construction and maintenance are easy. is there. Moreover, the tube 54 is mixed in the pile of the artificial lawn and does not hinder competition or the like.

  In addition, in the artificial turf ground 100 with a watering system of this embodiment, as shown in FIG. 1, the said tube 54 protrudes from the filling layer 36 in the state which is not sprinkling from the flexible nozzle 50 for watering. Specifically, the tube 54 has a rigidity that does not cause bending such that the tip of the tube 54 contacts the filling layer 36. For this reason, the problem that the particulate matter of the filling layer 36 fits into the opening of the flow path 58C at the tip of the tube 54 is less likely to occur.

  Further, the tube 54 is preferably provided with a rigidity higher than that of the pile 34 of the artificial lawn 30. By providing the tube 54 with greater rigidity than the pile 34, even when the vibrating tube 54 contacts the adjacent pile 34 in a state where water is sprayed from the watering flexible nozzle 50 as shown in FIG. 5. It is difficult for the movement of the tube 54 to be disturbed, and water can be efficiently sprayed.

(Construction method of lawn ground with watering system according to the first embodiment)
With reference to (A)-(E) of FIGS. 4-1 and FIGS. 4-2, the construction method of the artificial turf ground 100 with a watering system by the 1st Embodiment of this invention is demonstrated.

  First, as shown in FIG. 4A, the base 10 is formed by placing asphalt concrete. Then, the base | substrate 10 is cut and the groove | channel 12 for inserting the water supply pipe | tube 40 in the surface is formed.

  Next, as shown in FIG. 4B, the water supply pipe 40 is fitted into the groove 12 and disposed. Further, the water supply pipe 40 is connected to a water supply source (not shown). At this time, in order to prevent the water supply pipe 40 from shifting in the groove 12, the space outside the water supply pipe 40 in the groove 12 may be filled with a filler. Although a filler is not specifically limited, For example, the mixture formed by mixing granular materials, such as a rubber chip and sand, with resin can be mentioned. The filler may be filled over the entire extending direction of the water supply pipe 40, or only a part may be filled at a predetermined interval, or only the position of the socket 42 may be filled.

  Next, as shown in FIG. 4C, an artificial turf in which a plurality of piles 34 are planted on the base cloth 32 is installed on the base 10. At this time, the socket 42 is passed through a hole provided in the base fabric 32.

  Next, as shown in FIG. 4D, the watering flexible nozzle 50 shown in FIGS. 3A and 3B is connected to the socket 42 provided in the water supply pipe 40.

  Next, as shown in FIG. 4E, the filling layer 36 is formed by filling the particulate material between the plurality of piles 34 on the base fabric 32. The tube 54 of the watering flexible nozzle 50 protrudes from the filling layer 36. Examples of the filling method include an operation of spraying a granular material on artificial turf and pushing it between a plurality of piles 34 by a tool such as a brush or a sand spreader or by hand. Thus, the artificial turf ground 100 with a watering system by the 1st Embodiment of this invention can be constructed.

(Artificial grass ground with watering system according to the second embodiment)
With reference to FIG. 5 (A) and (B), the artificial turf ground 200 with a watering system by the 2nd Embodiment of this invention is demonstrated. In the following description, differences from the first embodiment will be mainly described. For points that are not described, the description of the first embodiment is cited. 5A and 5B, the same reference numerals are given to the same components as those of the first embodiment.

  In this embodiment, the base 10 has a two-layer structure including a crushed stone base 10A formed from crushed stone and a caking agent and an ascon base 10B formed by placing asphalt concrete thereon. And the groove | channel 12 is provided in the surface of the ascon board | substrate 10B. In FIG. 5A, the groove 12 is provided over the entire thickness of the ascon substrate 10B. However, the depth of the groove 12 may be smaller than the thickness of the ascon substrate 10B. The thickness of 10 A of crushed stone base | substrates can be 50-200 mm, for example, can be 150 mm. The thickness of the ascon board 10B can be 30 to 80 mm, for example, 50 mm.

  The configurations of the artificial lawn 30, the water supply pipe 40, and the watering flexible nozzle 50 are the same as those in the first embodiment. When the water supply pipe 40 is a vinyl pipe or a vinyl hose having a diameter (outer diameter) of about 6.0 to 15.0 mm as in the first embodiment, the groove depth is larger than the outer diameter of the water supply pipe in this embodiment. Is also larger than 15 mm. Therefore, in this embodiment, the socket 42 is below the upper end of the groove (that is, the surface position of the ascon substrate 10B) and does not penetrate the base cloth 32. The flexible nozzle 50 for watering extends from the groove 12 and penetrates the base cloth 32 at the portion of the plate-like base portion 52, and a part of the plate-like base portion 52 (upper part 2/3) is in the filling layer. Fixed. Then, almost the entire tube 54 protrudes from the filling layer 36.

  With reference to FIG. 5 (B), in this embodiment, in order to prevent the base fabric 32 from sinking into the groove 12, the filler 20 is added to the space outside the water supply pipe 40 in the groove 12. May be filled. Although a filler is not specifically limited, For example, the mixture formed by mixing granular materials, such as a rubber chip and sand, with resin can be mentioned. It is preferable that the filler is filled up to the upper end of the groove 12 throughout the extending direction of the water supply pipe 40 except for the position of the socket 42.

  Since the configuration other than that is the same as that of the first embodiment, this embodiment can obtain the same effects as those of the first embodiment. That is, labor and cost at the time of construction and maintenance of the watering system can be reduced, and the artificial turf ground can be effectively cooled without any troubles such as competition.

  The construction method of the artificial turf ground 200 with a watering system according to the present embodiment includes laying the artificial grass 30 (FIG. 4-1 (C)) and attaching the watering flexible nozzle 50 (FIG. 4-2 (D)). The construction method is the same as that of the first embodiment except that the order is reversed. 5A and 5B, the crushed stone base 10A and the ascon base 10B are formed, and then the ascon base 10B is cut to form the grooves 12. Thereafter, the water supply pipe 40 is fitted and arranged in the groove 12. At this time, the space outside the water supply pipe 40 in the groove 12 is filled with the filler 20 except for the position of the socket 42. Thereafter, the flexible nozzle 50 for watering is connected to the socket 42. Thereafter, an artificial turf is installed on the base 10. At this time, the flexible nozzle 50 for watering is passed through the hole provided in the base cloth 32. A granular material is filled between the plurality of piles 34 on the base fabric 32 to form a packed layer 36.

(Artificial grass ground with watering system according to the third embodiment)
With reference to FIG. 6, the artificial turf ground 300 with a watering system by the 3rd Embodiment of this invention is demonstrated. The artificial turf ground 300 with a watering system of this embodiment has the same configuration as that of the second embodiment except for the configuration of the base 10. In other words, in the present embodiment, the base 10 is made of a crushed stone base formed from crushed stone and a caking additive. The construction method is also the same as in the second embodiment.

  Also in this embodiment, similarly to the first and second embodiments, it is possible to reduce labor and cost during construction and maintenance of the watering system, and further effectively cool the artificial turf ground without any trouble such as competition. can do.

(Artificial grass ground with watering system according to the fourth embodiment)
With reference to the right side of FIG. 7, the artificial turf ground 400 with a watering system by the 4th Embodiment of this invention is demonstrated. In the following description, differences from the first embodiment will be mainly described. For points that are not described, the description of the first embodiment is cited. Moreover, in FIG. 7, the same code | symbol is attached | subjected to the same structure as the structure of 1st Embodiment.

  In the present embodiment, the base 10 has a two-layer structure including a crushed stone base 10A and a crushed stone base 10C formed thereon. And the base | substrate 10 is provided with the channel | path 14 where the extension direction is parallel to this surface directly under the surface. A branch passage 16 that opens to the surface of the base 10 is branched from the passage 14 at the position of the socket 42 of the water supply pipe.

  In the present embodiment, a protective pipe 46 for protecting the water supply pipe 40 is disposed. That is, the protective pipe 46 divides the passage 14 and the branch passage 16, and the water supply pipe 40 is disposed inside the protective pipe 46. Thereby, the water supply pipe 40 is not damaged during construction. Although the construction method of this embodiment will be described in detail later, in this embodiment, the protective pipe 46 and the water supply pipe 40 are installed on the crushed stone base 10A (see the left side of FIG. 7), and the crushed stone base 10B is formed thereon. . That is, the passage 14 is directly above the crushed stone base 10 </ b> A and the lowermost part of the crushed stone base 10 </ b> C.

  The width of the passage 14 may be appropriately determined similarly to the width of the groove 12 of the first embodiment, and is preferably larger by about 10 to 30 mm than the outer diameter of the water supply pipe 40. The height of the passage 14 (that is, the inner diameter of the protective pipe 46 in the present embodiment) is not particularly limited as long as it is larger than the outer diameter of the water supply pipe 40, but may be, for example, 13 to 30 mm. The thickness of the crushed stone base 10C is preferably 30 to 80 mm, and can be 50 mm, for example.

  In the present embodiment, unlike the first to third embodiments, the water supply pipe 40 is embedded in the base 10. However, since the flexible nozzle 50 for watering is also arrange | positioned without being embed | buried under the base | substrate 10, compared with the technique of patent document 1, 2, construction and a maintenance are easy.

  In this embodiment, the socket 42 is below the surface position of the base 10 and does not penetrate the base fabric 32. The watering flexible nozzle 50 extends from the branch passage 16 and penetrates the base cloth 32 at a portion of the plate-like base portion 52, and a part of the plate-like base portion 52 (about 2/3 of the upper portion) is in the packed bed. Fixed to. Then, almost the entire tube 54 protrudes from the filling layer 36.

  Since the configuration other than that is the same as that of the first embodiment, this embodiment can obtain the same effects as those of the first embodiment. That is, labor and cost at the time of construction and maintenance of the watering system can be reduced, and the artificial turf ground can be effectively cooled without any troubles such as competition.

  The construction method of the artificial turf ground 200 with a watering system of this embodiment will be described with reference to the left and right sides of FIG. First, as shown in FIG. 7A, a crushed stone base 10A is formed. Then, as shown to (B) in FIG. 7, this is installed on the crushed stone base | substrate 10A through the water supply pipe | tube 40 in the protective pipe 46. FIG. In addition, it aligns so that the position of the socket 42 of the water supply pipe 40 may become the position of the branch passage 16 where the protective pipe 46 divides.

  Thereafter, as shown in FIG. 7C, a crushed stone substrate 10C is further formed on the crushed stone substrate 10A. Thereby, the water supply pipe 40 and the protective pipe 46 are embedded in the base 10.

  Thereafter, as shown in FIG. 7D, the watering flexible nozzle 50 is connected to the socket 42. Thereafter, as shown in FIG. 7E, the artificial turf is installed on the base 10. At this time, the flexible nozzle 50 for watering is passed through the hole provided in the base cloth 32. Then, a granular material is filled between the plurality of piles 34 on the base fabric 32 to form a filling layer 36.

(Invention example)
An artificial turf ground 200 with a watering system of the second embodiment shown in FIGS. 5A and 5B was constructed according to the procedure described above. The plan view was as shown in FIG.

  As the artificial lawn, a 12,000 decitex, 130 μm and 310 μm thick mixed woven pile (monofilament pile) was used. As the granular material in the packed bed, the following mixed granular material was used. A powder (from Sri Lanka) obtained by pulverizing the mesocarp of coconut fruit was prepared. This powder was passed through a sieve having an opening of 9.5 mm, the maximum particle size was 6.0 mm, and the average particle size D50 was 1.0 mm. The average particle size D50 is measured using a plurality of sieves with different openings, the proportion of powder passing through the openings is measured, a graph of integrated mass% is created, and the integrated particle size is 50%. Asked. The openings of the sieves were 0.075 mm, 0.106 mm, 0.250 mm, 0.425 mm, 0.85 mm, 2.00 mm, 4.75 mm, and 9.5 mm. This measuring method is in accordance with JIS A 1204 “Soil Grain Size Testing Method”. The water content of this powder was 45.7% by mass as measured by the heat loss method. This powder and cinnabar sand were mixed in advance at a mixing mass ratio of 30:70 to form a mixed granule, and this mixed granule was filled between a plurality of piles. The thickness of the packed layer was 40 mm, and the height of the pile was 65 mm.

  As the water supply pipe, a vinyl pipe having a diameter of 20 mm was used on the outer periphery of the ground, and a vinyl hose having a diameter of 8 mm was disposed at an interval of 10 m in the width direction of the ground. In order to arrange the water supply pipe of the above dimensions, a groove having a groove width of about 30 mm and a groove depth of 30 to 50 mm is provided on the outer periphery of the ground on the surface of the asphalt concrete base. A groove having a groove depth of 30 mm and a groove depth of 30 to 50 mm was provided. The interval between the sockets was 10 m. As a water supply source, a water supply pump having a maximum water amount of 0.5 L / min and a maximum water pressure of 0.3 MPa was used.

  As the watering flexible nozzle, a watering flexible nozzle 50 (Technocore Corporation, Rain Curtain (registered trademark)) as shown in FIGS. 3A and 3B was used. First, the outer diameter of the connecting portion is 6.0 mm, and the inner diameter is 3.0 mm. Next, in the plan view of FIG. 3A, the first plate-like portion 52A has a width in the direction perpendicular to the tube extending direction of 15.0 mm. The outer diameter of the tube is 2.0 mm and the inner diameter is 1.0 mm. Moreover, the length of the part which protruded from the filling layer among the tubes was 20 mm.

(Evaluation method and evaluation results)
Under an outside air temperature of 30.7 ° C., turbulent watering was performed on 100 artificial turf grounds with a watering system of the invention example. When the water volume is 0.5 L / min and the water pressure is 0.2 MPa, water drops spout from the spout while the tube vibrates randomly, and within a radius of 3 m from the installation position of the flexible nozzle for watering. I was able to scatter water droplets on the artificial turf. While the temperature of the artificial turf ground surface before watering was 64.9 ° C, the temperature of the artificial turf ground surface after watering was 30.9 ° C, and a large cooling effect could be obtained. In addition, when the temperature at a position 1.2 m in height from the ground surface was measured on behalf of the perceived temperature on the ground, it was 30.7 ° C. before watering, but 28.0 after watering. ° C.

  The artificial turf ground with a watering system of the present invention is installed on, for example, an inner part of a track of an athletic stadium, a school yard, a garden, a playground, a rooftop, etc. It can be suitably used for various throwing competitions such as shot throwing.

100, 200, 300, 400 Artificial turf ground with watering system 10 base 10A crushed stone base 10B ascon base 10C crushed stone base 12 groove 14 passage 16 branch passage 20 filling material 30 artificial lawn 32 base cloth 34 pile (artificial turf leaf)
36 Filling layer 40 Water supply pipe 42 Socket 44 Water supply pump 46 Protective pipe 50 Watering flexible nozzle 52 Plate-like base 52A First plate-like part 52B Second plate-like part 54 Tube 56 Connection pipe 58A First flow path 58B Second Flow path 58C Third flow path 59 Spout

Claims (2)

A base provided with a groove on the surface or provided with a passage extending directly below the surface and extending parallel to the surface;
Artificial lawn having a base fabric installed on the base, a plurality of piles planted on the base fabric, and a packed bed in which particulate matter is filled between the plurality of piles on the base fabric When,
A water supply pipe having a socket disposed in a groove or passage of the base;
A water spray flexible nozzle connected to the water supply pipe;
Have
A branch passage that opens to the surface of the base at the position of the socket is branched from the passage,
The flexible nozzle for watering is
A connecting pipe having a first flow path connected to the socket and communicating with the flow path of the water supply pipe;
A plate-like base portion having a second flow path extending from the connecting portion and communicating with the first flow path;
A tube extending from the plate-like base, having a third flow channel communicating with the second flow channel inside, and having a tip serving as a spout,
The flexible nozzle for watering extends from the groove or the branch passage and penetrates the base cloth, at least a part of the plate-like base is fixed in the filling layer, and at least a part of the tube is Protruding from the packed bed,
By supplying water from the water supply pipe to the flexible nozzle for sprinkling, water drops spout from the spout while the tube vibrates randomly, and turbulent water spraying onto the artificial lawn is possible. An artificial turf ground with a sprinkler system. The artificial turf ground with a watering system according to claim 1, further comprising a protective pipe that divides the passage and the branch passage, wherein the water supply pipe is disposed in the protective pipe.

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