JPS59405A - Sand scattering apparatus for athletic field made of artificial turf - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sand spreading device for removing and filling sand into the turf of an artificial grass sports field.

In general, an artificial lawn is made of flat pile threads made of synthetic resin such as polyamide or polyurethane, which are flocked onto a backing fabric. In this case, the grass grains are filled with sand in order to approximate natural grass as closely as possible in terms of properties such as buffering capacity, ability to prevent spikes from catching, and moisture absorption capacity. Of course, the natural grass that makes up the Corfu course and lean is also filled with sand, but the natural grass on the greens is short and the grain is not very dense, so most of the sand that has been removed is It naturally penetrates into the grass grain, and the sand can be easily spread evenly by simply rubbing the grass surface lightly with a box-shaped flage. However, since the pile threads of artificial grass are considerably longer than those of natural grass and have a bulky structure, it is difficult to evenly fill the removed sand deep into the grass grains by simply scrubbing lightly with a brush. is extremely difficult.

Therefore, an object of the present invention is to provide a river sand spreading device for an artificial lawn sports field, which is equipped with flushing means that can efficiently and uniformly fill the sand removed from the artificial lawn into the grass grains. It is about providing.

In order to achieve the above object, the present invention includes a cart that moves on an artificial lawn, a hopper for storing sand mounted on the cart, and a sand discharged from the hopper to the rear in the traveling direction of the cart. A belt conveyor conveying and spreading the spray onto the artificial lawn from its terminal end; a flushing means ♂ disposed behind the belt conveyor and moving together with the trolley while rubbing the artificial lawn; The flushing means includes at least two rows of brushes oriented in a direction substantially perpendicular to the moving direction of the cart at a falling position of the sand removed from the belt conveyor, and the front brush cleans the leaves of the artificial lawn. Tilt the tip forward in the direction of movement of the trolley to promote filling of sand into the grass grains (! It is characterized by leveling.

Hereinafter, the present invention will be described in detail with reference to embodiments shown in the accompanying drawings.

FIG. 1 shows a schematic perspective view of a sand spreading device constructed in accordance with the present invention. This sand spreading device is 1
It is equipped with a cart 1 that runs on an artificial lawn. In this embodiment, one bogie l has a motor (not shown) and is configured to be self-propelled by the motor. You can. A hopper 2 for storing sand is mounted on the cart 1. In this case, the hopper 2 is provided so as to straddle between both side plates of the trolley 1, and
It has a discharge port 3 that opens downward. Although not shown, in actuality, in relation to this discharge port 3,
A shutter plate is provided to control the degree of opening. Further, the truck 1 has a belt conveyor 4 arranged below the hopper 2. This belt conveyor 4 has a pair of rollers 5, 5 which are pivotally supported at the front and rear parts of one cart 1, and an endless belt which passes between the rollers 5, 5 passing below the discharge port 3 of the hopper 2. In this case, one of the rollers 5, 5 is operatively connected to the aforementioned motor (not shown) as a driving source. In this invention, the belt conveyor 4
The brushing means 7 is arranged behind the trolley l and moves along with the trolley l while rubbing the artificial lawn.

Referring to FIG. 2 and FIG. 3 together, this flushing means 7 has a base frame 8 connected to the rear part of the truck 1, and a base frame 8 that is oriented in a direction substantially perpendicular to the moving direction of the truck 1. It is comprised of a plurality of rows, four rows of flanges 9a to 9d in this embodiment, attached to the frame 8. In this embodiment, the base frame 8 includes four frame members 8a to 8d that correspond to the brushes 93 to 9d and also extend in a direction substantially perpendicular to the moving direction of the truck 1, and They are connected to each other so as to reciprocate with a predetermined stroke in the left and right direction orthogonal to the direction of movement. That is, as illustrated in FIG. 2, a pair of slits 10 and 10 extending in the left-right direction are bored in the frame member 83 of the base frame 8 facing the rear part of the bogie 1.
A pair of connecting arms 11.11 attached to the rear of the truck 1 are slidably engaged with each of the slits 10.10. Each of the connecting arms 11,11 is attached to the rear of the truck 1 so as to be able to rotate in the vertical direction, so that the entire weight of the flushing means 7 is applied onto the artificial lawn. Further, one end of an operating rod 13 extending into the interior of the truck 1 through a slit 2 bored at the rear of the truck 1 is fixed to the frame member 88, and the other end of the operating rod 13 is connected to a crank. It is operatively connected to a motor 16 mounted on the truck 1 via a disc crank 15 that includes an arm 14 . Therefore, motor 1
6 is converted into a linear reciprocating motion by the disc crank 15, and is transferred to the base frame 8 via the operating frame 13.
is transmitted to. As a result, the base frame 8 is reciprocated in the left-right direction within a plane parallel to the artificial lawn with a predetermined stroke. On the other hand, each flage 9 above
3 to 9d are bristles that are planted almost vertically at the lower ends of the frame members 8a to 8d. In this case, each flage 9a to 9d is made of bristles made of palm bristles, nylon, or the like, which are stronger than the synthetic resin piles constituting the artificial lawn.

Next, the operation of this sand sprinkling device will be explained.

First, dry sand is put into hopper 2. As this sand, silicate value grains such as river sand, sea sand, borax, etc. are most suitable, and the grain size is preferably about so-called borax size 5 to 8. Then, the endless heald 6 of the belt conveyor 4 is moved counterclockwise in the same figure while the trolley 1 is moved in the direction of the arrow in FIG. 1 while pulling the flage sink means 7 through the connecting arm 11.11. As a result, the sand stored in the hopper 2 is placed on the endless belt 6 from its discharge port 3, carried to the rear of the truck 1, and then removed onto the flage sink means 7 described above.

In this case, in order to spread the sand over a wider area, it is preferable to provide a rotating flange at the rear end of the belt conveyor 4, as shown by the imaginary line in FIG.

The sand removed in this way is removed from each frame member 8a to 8d.
However, in this invention, as one truck 1 moves, each flange 9a to 9a falls onto the artificial lawn.
9d advances while tilting each pile yarn A of the artificial lawn forward in the direction of movement, so each turf grain between the pile predecessors is greatly expanded, and as a result, the removed sand is efficiently transferred into the turf grain. The filled sand is spread almost uniformly by the subsequent flanges, in this embodiment flanges 9b, 9c and 9d. In order to more effectively fill and level the sand by the flushing means 7, the motor 16 is driven to move the flushing means 7 itself reciprocatingly in the left and right direction, so that each pile thread A is coated with sand. It is good to give action. Note that, unlike the above embodiment, the base frame 8 of the flage sink means 7 may be vibrated in the front and back direction, and when the grass is denser, the base frame 8 may be vibrated in the front and back direction.
A vibrator is placed on top of the flanges 9a to 9d so that vibration and the weight of the vibrator are applied to each flange 9a to 9d. On the other hand, regarding the flange, it is not limited to the four-row configuration of the above embodiment. In other words, the preceding brush tilts the pile threads as described above to efficiently fill the grass grains with sand, and then the subsequent brush spreads the filled sand, so in this sense at least 2. It would be nice to have a column flange.

As is clear from the description of the embodiments described above, the present invention can remove sand from artificial grass, which is considerably longer than natural grass, and has a bulky structure. It can be filled efficiently and evenly.
It is extremely useful when constructing an athletic field made of artificial grass.

[Brief explanation of the drawing]

Fig. 1 is a perspective view schematically showing a sand spreading device according to the present invention, Fig. 2 is a perspective view schematically showing a main part of the connection structure between the cart and the flage sink means, and Fig. 3 is a perspective view of the above-mentioned flage sink means. FIG. 3 is a cross-sectional view for explaining the action. In the figure, l is a trolley, 2 is a hopper, 4 is a belt conveyor,
7 is a flage sink means, 8 is a base frame, and 9a to 9d are flages. Patent Applicant: Sumitomo Rubber Industries Co., Ltd. Patent Attorney Takuya Ohara Figure 1 2 Figure 2 Figure 3 Procedural Amendment (1 button 1, Display of the case 1982 Patent Application No. 109535 2, Invention Name: Artificial grass sports stadium river sand spreading device 3, relationship with the person making the amendment Patent applicant: 1-1-1 Tsutsui-cho, Chuo-ku, Kobe, Hyogo Prefecture Sumitomo Rubber Industries, Ltd. Representative: Kyohei Yokose 4, Agent (〒102) 5. Date of amendment order (self-initiated) Showa year, month, day (shipment date; same year, month, day)
6. “Title of the invention” and “Claims” in the specification subject to amendment; 7.
Contents of the amendment (1) The name of the invention is corrected to "Artificial grass athletic field river sand spreading device." :2. The scope of claims is amended as shown in the attached sheet. (3) Page 2 of the specification, line 6 (2 places), line 17,
3rd page, 3rd line, 6th line, 8th line, 14th line,
Line 18, page 4, lines 9 and 10, page 7, line 11, page 8, lines 2, 3, 6, and 12 , on page 9, lines 15 and 19, “Distribution J
Correct each statement to read ``distribution.'' Attachment 2. Claims (1) A device for filling sand in layers into the grain of an artificial lawn laid on a base made of cement, asphalt, etc.,

Claims (1)

[Claims] (1) A device that removes and fills sand into the grain of an artificial lawn laid on a base made of cement, asphalt, etc. A cart that moves on the artificial lawn, a hopper for storing sand mounted on the cart, and a hopper that transports sand discharged from the hopper to the rear in the traveling direction of the cart, and from the end thereof to the artificial lawn. a belt conveyor that moves upward; and a flushing means that is disposed behind the belt conveyor and moves together with the trolley while rubbing on the artificial lawn, the flushing means moving from the heald conveyor. At least two rows of flanges are oriented in a direction substantially perpendicular to the moving direction of the trolley at the falling position of the sand to be removed, and the front flange moves the leaf tips of the artificial lawn forward in the moving direction of the trolley. The artificial artificial grass is characterized in that the sand is tilted to promote the filling of sand into the grass grains, and the rear brush is used to fill the sand between the grass grains and spread the sand almost evenly. Lawn athletic field river sand spreading device.