JPH03406Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a device for spreading granular materials such as sand onto artificial turf.

(Prior art) Conventionally, to spread granules such as sand on artificial turf, a hand-push brush has been used for small areas, a granule spreader has been used for large areas, and brushing methods such as rotating brushes have been used. A device that spreads granular materials such as sand is also known, for example, as a sand spreader described in Japanese Patent Application Laid-Open No. 59-98904.

(Problem that the invention aims to solve) Since the pile threads of artificial turf (hereinafter referred to as turf leaves) are flexible, if granular materials such as sand are added all at once, the turf leaves will fall over, and sand will be placed on top of them. It forms a ivy shape and does not achieve the purpose of uniform dispersion.

Even if the conventional sand spreading method described above is used, unless the sand is spread gradually, if the grass blades are wet, the sand will stick to the middle of the grass blades and will not penetrate to the roots.
A method of water tightening is also considered, but it requires a large amount of water. In addition, sand spreading devices using brushing have the effect of blowing away sand particles with the bristles of the brush, so the sand does not get into the grass blades properly.

(Means for Solving the Problems) The granule dispersing device of the present invention is provided with a hopper for accommodating granules at the top of a cart, and below the hopper, the granules discharged from the hopper are conveyed to the rear of the cart. A belt conveyor is provided, and a rotating blade is provided at a position where the granular material falls from the conveying end of the belt conveyor to raise the artificial grass blades and insert the granular material to the root of the grass blade. means that a plurality of blades are erected on the rotating circumferential surface of a rotating body, and the rotating shaft of the rotating body is provided with a traveling guide that rotates freely independently of the rotation of the rotating shaft. This is a characteristic feature.

(Function) With the above-described configuration, the rotating blade of the present invention is provided at the position where the granular material will fall, so the granular material can be spread while raising and supporting the artificial turf leaves with the blade. I can do it.

(Example) An example of the granular material dispersing device of the present invention will be described below with reference to the drawings.

FIG. 1 shows an example of the granule dispersing device of the present invention,
1 is a truck, and 2 is a running wheel such as a roller or a rubber tire of the truck 1. 3 is a granular material such as sand that is sprinkled on artificial turf, and is a granular material consisting of a single substance or a mixture of inorganic particles such as slag or organic particles such as rubber, plastic, and wood flour in addition to sand. It is housed in a hopper 5 provided on the upper part of the truck 1, and is supplied from the hopper 5 onto a belt conveyor 6.

The conveyance surface of the belt conveyor 6 rotates in a direction opposite to the direction in which the cart 1 moves (direction of arrow A), and a rotating brush 7 that rotates in a direction opposite to the rotation of the belt conveyor 6 faces the end of the conveyance destination. A rotary brush 7 disperses the granular material 3 carried by a belt conveyor 6 and drops it below the cart 1. Below the conveyance destination end 61 of the belt conveyor 6, the turf 10 of the artificial turf 9 is stood up almost directly below where the granular material 3 dispersed by the rotating brush 7 falls, and the granular material 3 is spread to the root of the turf leaf 10. A rotating blade 8 is provided for entering. As shown in FIG. 2, the rotating blade 8 has a plurality of blades 11, . 12
Freely rotating guide rings 13, 13 are provided at both ends of the travel guide E, respectively.
The guide ring 13 rotates through friction with the grass blades 10 as the cart 1 moves on the artificial grass surface.

The blades 11, . . . may be formed of a wooden plate, a metal plate, etc., but it is preferable to attach a plate made of synthetic resin to the tip of the wooden plate, metal plate, etc.

The guide rings 13, 13 are designed to be able to rotate freely with the rotation of the rotating shaft 12, and serve as a guide so that the rotating blade 8 can smoothly move straight along the grass grain. The outer diameter of the guide rings 13, 13 is the same as that of each blade 11,...
The outer diameter of the roll body 16 is slightly larger than the outer diameter of the roll body 16 surrounded by the outer periphery of the blade formed by an imaginary line (not shown) connecting the outer end surfaces of the blades. Since the outer diameter of the guide rings 13, 13 is made larger than the outer diameter of the roll body 16, it is possible to prevent the blades 11, . This makes it possible to control the amount of granules 3 that are introduced into the grass blades 10 to a constant amount depending on the length of the grass blades 10.

In FIGS. 2 and 3, reference numerals 14,
14 is a circular blade provided in the middle of the roll body 16 of the rotating blade 8. circular blade 1
4 and 14 are provided parallel to the traveling direction of the trolley 1 (direction of arrow A). Circular blade 14, 14
may be configured to be able to freely rotate independently of the rotation of the rotating shaft 12 like the guide rings 13, 13 described above, or may be configured to be rotated by the rotation of the rotating shaft 12. Further, the outer diameter of the circular blade 14 is also the same as that of the guide ring 13.
Similarly, it is made slightly larger than the outer diameter of the roll body 16. The reason why the outer diameter of the roll body 16 and the guide ring 13 or the circular blade 14 are different in size is that the outer diameter of the guide ring 13 or the circular blade 14 is expanded or contracted in the range of about 0 to 20 mm. If you replace it with artificial grass 9
This is because the amount of granules 3 that are introduced into the grass blades 10 can be controlled to a constant amount.

In the above example, the blades 11, . . . are perpendicular to the traveling direction, and the circular blades 14, 14 are
The blades 11, . . . or the circular blades 14, 1 are provided parallel to the traveling direction of the
4 may be diagonally crossed with respect to the traveling direction.

The rotating blade 8 configured in this way is mounted on the trolley 1.
It is mounted so as to be able to rotate on the artificial grass 9 via brackets 15, 15, approximately directly below where the granular material 3 falls on the rear side or the front side.

The rotating blade 8 is driven by winding one end of a belt 18 that transmits driving force around a pulley 17 attached to the end of the rotating shaft 12, as shown in FIGS. 1 and 2. The other end of the belt 18 is wound around a pulley 19 provided on the rotating shaft of the rotating brush 7, for example. 20 and 21 are belt conveyor 6
22 and 23 are pulleys provided on the rotating shafts of the pulleys 20 and 21. Further, 24 is a pulley of a motor (not shown) which is a driving source. The motor serving as the driving source may be used in common with the motor that drives the trolley 1. 25
is a belt that transmits the rotational force of the motor to the belt conveyor 6, and is wound around the pulleys 23 and 24.
26 transfers the rotational force of the belt conveyor 6 to a rotating brush 7.
The belt that transmits the information is wrapped around pulleys 19 and 22. The pulleys 17, 19, 22, 23, 24 may be sprockets, but in this case the belts 18, 25, 26 are chains.

The transmission of the driving force of the rotary blade 8 is not limited to this configuration, and the rotational force of the motor may be directly transmitted. Further, it is preferable that a speed change means (not shown) is interposed between the motor and the rotating shaft 12, which is a rotating body, so that the rotational speed of the rotating blade 8 can be freely changed in forward and reverse directions.

In the case of so-called sequential running in which the cart 1 is run in the direction in which the grass blades 10 fall (in the direction of arrow A), the rotation direction of the rotary blade 8 is the same as the running direction of the cart, and the Rotation speed is trolley 1
It is preferable that the running speed be approximately 10% or more faster than the running speed of , but conversely, in the case of so-called reverse running in which the trolley 1 is run in the opposite direction to the direction in which the grass blades 10 have fallen (in the direction of arrow B). The rotating direction of the rotary blade 8 may be opposite to or the same direction as the traveling direction of the truck, and it is preferable that the rotational speed is slower than the traveling speed of the truck 1. In this way, depending on how the grass blades 10 fall,
The rotation direction and rotation speed of the rotating blade 8 are selected as appropriate.

The rotating blade and traveling guide used in the granular material dispersing device of the present invention are as shown in FIGS. 1 to 3 above.
The present invention is not limited to the illustrated example, and may be a rotating blade and a traveling guide as shown in FIGS. 4 and 5.

In FIGS. 4 and 5, the rotating body D is constructed by fixing pulleys 121, 121 attached to both sides of the rotating shaft 12. The rotating blade 8 is formed by erecting a plurality of blades 11, . . . on the periphery via a plurality of stays 122, . A plurality of blades 11 may be attached to one stay 122 at intervals, or may be one long blade. In this way, fixed pulleys 1 are placed on both sides of the rotating shaft 12.
21, 121 is attached to the rotating body D.
The blades 11, .
Since the rotating blade 8 can be formed by attaching each of the stays 122, .
The blades 11, . . . do not temporarily receive the turf, and the turf leaves 10 of the artificial turf 9 can be directly inserted into the tips of the blades 11 that are erecting them.

At both ends of the rotating shaft 12 of the rotary body D, support stands 41, 41 of the guide roller device 4 as the traveling guide E are rotatably mounted via bearings 42, 42, respectively. The guide roller device 4 includes support stands 41, 41, and leg pieces 4 that hang down and are fixed to opposite sides of the support stands 41, 41, respectively.
3, 43, 44, 44, and rollers 45 provided at the bottom of a pair of opposing leg pieces 43, 43 or 44, 44, . The leg piece 43 or 44 has an elongated hole 46 for bolt insertion inserted approximately in the center, and this elongated hole 46
The bolt tightening position can be adjusted according to the vertical height of 3 or 44. A shaft mounting hole 47 is provided in the lower part of the leg piece 43 or 44, and a shaft 48 is fitted into the shaft mounting hole 47. The rollers 45, . . . are each connected to the shaft 4.
The leg pieces 43, 4 can be rotated freely at 8.
It is mounted close to 3, 44, 44.

The rotating blade 8 using the circular rotating body D as shown in FIGS. 4 and 5 described above is not limited to a cylindrical shape as long as the rotating body D has a rotatable shape and structure. Further, in order to improve the ability to spread the granular material 3, the cylindrical rotating blades 8 may be arranged in multiple rows on the supports 41, 41 of the guide roller device 4.

Next, Figures 1 to 3 show a specific example of making an artificial turf tennis court using the granule spreading device of the present invention.
This will be explained based on the diagram.

Artificial turf 9 with a length of about 20 mm of turf leaves 10 formed by planting polypropylene yarn by tufting is laid on the asphalt-paved or concrete-finished ground. A granule spreading device is run to spread sand as granules 3 onto the artificial turf 9.
The roll body 16 that constitutes the rotating blade 8 has an outer diameter of 300 mm, a blade thickness of 2 mm, and a blade length of 1000 mm, and the rotating shaft 12 has 10 blades 11 arranged at equal intervals. They are planted on each radius. Guide rings 13, 13 provided at both ends of the rotating shaft 12 are configured to be able to freely rotate independently of the rotating shaft 12.

Sprinkling of the sand as the granules 3 is carried out several times, each time having a thickness of about 3 mm. When scattering sand, when the cart 1 is run in the direction in which the grass blades 10 fall (in the direction of arrow A), the rotating direction of the rotary blade 8 is the same as the running direction of the cart 1, and the circumferential speed of the roll body 16 is relative to the traveling speed of trolley 1
Rotated at a fast speed of 10% or more. On the contrary, grass leaves 10
Carriage 1 is moved in the opposite direction to the direction in which it fell (direction of arrow B).
When traveling, the rotating direction of the rotary blade 8 was rotated in the opposite direction to the traveling direction of the truck, and the rotation speed was set to be slower than the traveling speed of the truck 1, or to a state where the rotation was almost stopped. As a result, the spraying speed was 500 m ² /hr.

Initially, the outer diameter of the guide rings 13, 13 was 15 mm higher than the outer diameter of the roll body 16, and after putting the sand as the granules 3 into the artificial grass 9 several times, the guide rings 13, 13 The granules 3 were spread using a roller whose outer diameter was higher than that of the roll body 16. By doing this, approximately 15 mm of sand is added to the blades 10 of the artificial turf 9.
It was able to be evenly distributed in a thick layer.

The sand penetrated to the base of the grass blades 10 raised by the roll body 16, and when a hard tennis ball was dropped from a height of 200 cm, it bounced to a height of 100 cm.

For comparison, a case will be described in which a conventional sand spreading device using brushing is used.

Only about 1 to 2 mm of sand gets into each blade of grass in one application. When sand with a thickness of about 3 mm is spread on artificial grass 9 in one application, 10 grass leaves
The sand did not penetrate sufficiently to the roots of the grass, and as a result, the thickness of the sand that was spread was extremely uneven, resulting in unstable sand-containing artificial turf. When this conventional example is used, since the amount of sand spread at one time is small, it is difficult to form a 15 mm thick layer of sand on the artificial grass 9 compared to when using the granule spreading device of the present invention. It took about twice as long. When a hard tennis ball is dropped from a height of 20 cm, it bounces only up to a height of 80 cm.

(Effect of the invention) By having the above structure in the granular material dispersing device of the present invention, the circumferential speed of the rotating blade is relatively low, without rotating as fast as a rotating brush.
In other words, since the granules are spread while the fallen grass leaves are being erected, the granules can be efficiently and evenly distributed down to the roots of the grass leaves. By tapping the blade lightly with the tip of the blade, the granules can be inserted deep into the root of the blade. In addition, since the rotating shaft of the rotary body is provided with a travel guide that rotates freely independent of the rotation of the rotating shaft, it serves as a guide for the advancement of the cart and also allows the height of the rotating shaft of the rotating blade to be adjusted. This prevents the blades that make up the rotating blades from scratching and damaging the grass blades, and the amount of granules that enter into the grass blades can be adjusted to a constant amount depending on the length of the grass blades. can be controlled.

[Brief explanation of drawings]

Fig. 1 is a schematic side view, partially cut away, showing an embodiment of the granule dispersing device according to the present invention, and Fig. 2 is a sectional view cut away in the middle of the same rotating blade.
FIG. 3 is a perspective view of the roll body in the above rotary blade, FIGS. 4 and 5 show other examples of the same rotary blade together with a running guide, FIG. 4 is a side view thereof, and FIG. 5 is a V - It is a sectional view seen from the V arrow. Explanation of symbols, 1... Cart, 3... Granular body, 5...
...Hopper, 8... Rotating blade, 9... Artificial grass, 10... Grass leaf, 11... Blade, 12...
Rotating shaft, D...Rotating body, E...Traveling guide.

Claims (1)

[Scope of utility model registration request] A hopper for storing granules is provided on the upper part of the cart, and a belt conveyor is provided below the hopper for conveying the granules discharged from the hopper to the rear of the cart. A rotating blade is provided that raises the artificial grass leaves at the falling position and inserts the granules to the roots of the grass leaves. A granular material dispersing device characterized in that a rotating shaft of the rotating body is provided with a running guide that rotates freely independently of rotation of the rotating shaft.