JPS5998905A - 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 spreading and filling sand into the turf of an athletic field made of artificial grass.

Generally, artificial lawns are made of flat pile threads made of synthetic resin such as polyamide or polyurethane, which are flocked onto a backing fabric. In this case, in order to make it as close as possible to natural grass in terms of its properties, such as buffering capacity, ability to prevent spikes from getting caught, and moisture absorption capacity,
The grass grains are filled with sand. Of course, the natural grass that makes up the greens of golf courses is also filled with sand, but the natural grass on the greens is short and the grain is not very dense, so the sand that is spread almost naturally. It entered the lawn and became one year old. You can easily spread the sand by lightly scrubbing the lawn surface with a broom-shaped brush. However, the pile threads of artificial grass are considerably longer than the length of natural grass and have a bulky structure, so it is extremely difficult to evenly fill the spread sand deep into the grass grains by simply rubbing it lightly with a brush. Have difficulty.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an apparatus for spreading river sand for an athletic field made of artificial grass, which is equipped with a brushing means that can efficiently and uniformly fill sand into the grains of the artificial grass while spreading sand on the artificial grass. There is a particular thing.

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
It is equipped with a cart 1 that runs on an artificial lawn. In this Φ embodiment, the bogie 1 has a motor (not shown) and is configured to be self-propelled by the motor. It's okay. The cart 1 is equipped with a hopper 2 for storing sand. In this case, the hopper 2 is provided so as to straddle between both side plates of the trolley l, and
It has a discharge port 3 that opens downward. Although not shown in the figure, in actuality, in relation to this exhaust φ port 3,
A shutter plate is provided to control the degree of opening. Further, the cart 1 has a belt conveyor 4 arranged below the hopper 2. This belt conveyor 4 consists of a pair of rows 25, 5 which are pivotally supported at the front and rear parts of one cart 1, and an endless belt extending between each row 25, 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 1 and moves together with the trolley 1 while rubbing the artificial lawn.

This flushing means 7 includes a base frame 9 connected to the rear part of the truck I via vertically swingable connecting arms 8, 8.
and a plurality of rows, in this embodiment, two rows, which are slidably attached to the base frame 9 in a direction perpendicular to the traveling direction of the trolley 1.
It consists of a row of flanges 10a, 10b. In this case, the base frame 9 consists of two guide rails 12a and 12b framed in parallel to each other by a plurality of horizontal branches 11, as illustrated in FIG. 2, and these guide rails 12a.

12b is supported by the above-mentioned connecting arms 8, 8 so as to be orthogonal to the traveling direction of the truck 1. On the other hand, Fraj 1
Each of 0a and 10b is the guide rail 12a.

Slide plates 13a, 13 slidably engaged within 12b.
b, and are driven reciprocatingly in opposite directions by brush driving means provided on the trolley 1 side. That is, each flange IQa, IQb is pivotally supported by pins 14-a, 14b planted in the respective slide plates 13a, 13b, and a post 15 protruding from the center of the lower surface of the lateral branch 11. , and a lever 17 having slits 16.degree. 16 at both ends thereof to engage with each of the pins so as to move in opposite directions. In this embodiment, one end of a drive arm 18 extending into the frame of the truck 1 through a slit 17 formed at the rear of the truck 1 is fixed to one slide plate 13a. The other end is operatively connected to a motor 2'1, which is a drive source, via a disk crank 2o including a crank arm 1.9.

Therefore, the rotational driving force of the motor 21 is converted into a linear reciprocating motion by the disc crank 2o, and is transmitted to one slide plate 13a via the driving arm 18. As a result, the brushes 10a and 10b are driven reciprocatingly in opposite directions along the left-right direction that is parallel to the artificial lawn surface and orthogonal to the traveling direction of the trolley 1. In addition, each brush 10a, 10b is
It is preferable to use bristles made of palm hair, nylon, etc., which are stronger than the synthetic resin pile yarns that make up 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 mineral grains such as river sand, sea sand, silica sand, etc. are most suitable, and the grain size is preferably about 5 to 8 so-called silica sand. Then, while pulling the brushing means 7 through the connecting arms 8, 8, the trolley 1 is run in the direction of the arrow in FIG. 1, and the endless belt 6 of the reto conveyor 4 is moved counterclockwise in the same figure. As a result, the sand stored in the hopper 2 is placed on the endless belt 6 from the discharge port 3, carried to the rear of the cart 1, and then spread over the above-mentioned brushing means 7 and on the front side thereof. Ru. In that case, in order to spread sand uniformly over a wider area, it is preferable to provide a rotary flange 22 at the rear end of the belt conveyor 4, as shown in FIG. In this way, dry sand is spread on the artificial lawn.
In this invention, each flange 10a is
, '10b reciprocate in opposite directions along the direction perpendicular to the traveling direction of the trolley 1 as described above, so the dry sand is efficiently filled into the grass grain between each pile thread A of the artificial lawn. . That is, each flange 10a, lob advances while tilting each pile yarn A forward in its traveling direction as the trolley 1 moves, so each turf between the pile yarns is greatly expanded, and each brush Since the pile threads A are loosened by the left-right movement of 10a and 10b, the dry sand is quickly filled into each grass grain as if sieved off. In this case, the movement stroke of each brush 10a, 10b depends on the interval between the grass grains, but in general, the optimum length is about 05 to 2.0 times the length of the pile yarn A, and the tufting direction of the pile yarn A for each brush 10
a.

The highest filling efficiency can be obtained by arranging the holes 10b orthogonal to each other.

Note that, unlike the above embodiment, both flanges 10a and 10b may be reciprocated in the same direction depending on the case. It is also possible to provide two or more rows of brushes and to reciprocate them in opposite directions. In this sense, it is sufficient that at least two rows of brushes are provided.

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

[Brief explanation of drawings]

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 a connection structure between a cart and a brushing means, and Fig. 3 is a perspective view of the above-mentioned brushing means. FIG. 3 is a cross-sectional view for explaining the action. In the figure, 1 is a trolley, 2 is a hopper, 4 is a belt conveyor,
7 is a brushing means, 9 is a base frame, and 10a. 10b is a brush. Patent applicant Sumitomo Com Industries, Ltd.

Claims (2)

[Claims] (1) A device that spreads and fills sand into the turf of an artificial lawn laid on a base made of cement, asphalt, etc., comprising a trolley that moves over the artificial lawn, and a trolley that is mounted on the trolley. a hopper for storing sand; a belt conveyor that conveys the sand discharged from the hopper to the rear in the traveling direction of the cart and spreads it onto the artificial lawn from its terminal end; and a belt conveyor connected to the rear of the cart. brushing means including at least two rows of brushes oriented in a direction substantially perpendicular to the traveling direction of the trolley, and the brushes are reciprocated along a direction perpendicular to the traveling direction of the trolley and parallel to the artificial lawn surface A device for spreading river sand for an athletic field made of artificial grass, characterized in that it is equipped with a brush driving means for moving the river sand. (2) The sand spreading device according to claim 1, wherein each of the brushes is driven by the brush driving means to reciprocate in relatively opposite directions.