JPH0216808B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cleaning device suitable for collecting debris such as fallen leaves scattered on a sports field such as a tennis court made of artificial grass containing sand.

An artificial lawn with sand is made by planting a flat pile system made of synthetic resin such as polyamide, polyurethane, vinylidene chloride, or polypropylene into a backing fabric. It is filled thickly and is advantageous in terms of maintenance compared to natural grass. It also closely resembles the characteristics of natural grass and is evergreen, so it is preferable both in terms of characteristics and aesthetics. For these reasons, artificial turf with sand has been applied to various athletic fields including tennis courts. Fallen leaves are often scattered on the surface, which spoils the beauty of the area, and if leaves are left as they are, they will gradually rot and become difficult to clean, and rotten leaves can be extremely slippery. , which can be dangerous to exercise in and must be cleaned frequently.

This invention was made in view of the above circumstances,
The purpose is to provide a cleaning device that can easily collect debris such as fallen leaves scattered on an artificial lawn containing sand.

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

As shown in FIG. 1, this cleaning device has a casing 2 that runs on wheels 3 over an artificial lawn 1 containing sand. In addition, in the figure, the dry sand filled in the grass grains of the artificial lawn 1 is represented by a satin pattern. In this embodiment, the casing 2 has a garbage intake port 4 opened toward the artificial lawn 1 at its front bottom, and the garbage intake port 4 is used to store fallen leaves and the like scattered on the artificial lawn 1. A rotary brush device 5 for collecting dirt is preferably provided, the height of which is adjustable. In this embodiment, the rotating brush device 5 is operatively connected to, for example, a running wheel 3 of the casing 2 via a chain (not shown), and the rotating brush device 5 is operatively connected to a running wheel 3 of the casing 2 via a chain (not shown). Single rotation brush 5a
and an auxiliary second rotating brush 5b which is rotated in the opposite direction to the forward direction of the rotating brush 5a and arranged so that the brushes overlap each other to some extent. That is, if the direction of movement of the casing 2 is rightward in FIG. 1, the first rotating brush 5a is rotationally driven counterclockwise, and the second rotating brush 5b is rotationally driven clockwise. In addition, in order to improve garbage collection efficiency, the brush 6 of the first rotating brush 5a is replaced with the second brush 6.
As shown in the figure, they are arranged in a spiral with respect to the rotating shaft 7, similar to the screw auger. Further, a hopper chamber 8 is formed in the casing 2 to store the dust collected from the dust intake port 4 by the rotary brush device 5. In connection with the hopper chamber 8, an opening 10 is bored in the bottom of the casing 2, and in this case, a sieve means made of a wire mesh 9 of about 5 mm square is disposed in the bottom opening 10. Then, the dry sand collected from the grass grains of the artificial lawn 1 along with the garbage is allowed to fall onto the artificial lawn 1 through the wire mesh 9. Note that reference numeral 11 is a handle for pushing the casing 2 by hand, and 12 is a lid for removing dust attached to the rear wall of the casing 2.

In the above configuration, when the rotating brush device 5 is adjusted to a predetermined height and the casing 2 is advanced, for example, in the right direction in FIG. The second rotating brush 5b is rotated counterclockwise in the figure, and the second rotating brush 5b is rotated clockwise. Therefore, debris such as fallen leaves scattered on the artificial lawn 1 is removed by the first rotating brush 5a and the second rotating brush 5.
The garbage intake port 4 is raked up by b.
is effectively collected into the casing 2 from
The particles are blown toward the hopper chamber 8 mainly due to the rotating action of the second rotating brush 5b. At that time, there is a possibility that the sand filled in the grass grains of the artificial lawn 1 will also be collected by this rotating brush device 5, but the fine sand will pass through the wire mesh 9 and enter the artificial lawn from the bottom opening 10 of the casing 2. Since the sand will be sieved onto the lawn 1, there is no risk that the sand in the sand-containing artificial lawn 1 will decrease or its characteristics will change. Note that, if necessary, a vibrator may be attached to the wire mesh 9 to forcibly sieve the sand from the hopper chamber 8.
The garbage accumulated in the hopper chamber 8 is removed from the lid 1.
By opening 2, it is taken out, for example, to a predetermined dumping location.

In the above embodiment, the first and second rotating brushes 5a and 5b are driven by the running wheels 3, but a motor or the like for driving the rotating brushes may be provided separately.

As is clear from the description of the embodiments described above, the present invention includes a casing 2 that runs on wheels 3 over a sand-containing artificial lawn 1, and the casing 2 includes:
A dust intake port 4 and a first rotating brush 5 that is driven to rotate in mutually opposite directions within the dust intake port 4.
a rotary brush device 5 consisting of a rotary brush 5a and a second rotary brush 5b; a hopper chamber 8 for storing garbage collected by the rotary brush device 5; and a hopper chamber 8.
This invention is characterized by a sieve means made of a wire mesh 9 or the like placed in the bottom opening 10 of the artificial lawn 1, thereby easily and effortlessly removing debris such as fallen leaves scattered on the artificial lawn 1. It can be recovered.

[Brief explanation of drawings]

FIG. 1 is a schematic sectional view showing an embodiment of the present invention, and FIG. 2 is a perspective view of a rotating brush used in this device. In the diagram, 1 is artificial grass with sand, 2 is casing,
3 is a wheel, 4 is a dust intake port, 5 is a rotating brush device, 5a is a first rotating brush, 5b is a second rotating brush, 6 is a brush, 7 is a rotating shaft, 8 is a hopper chamber, 9
is a wire mesh, and 10 is a bottom opening.

Claims (1)

[Scope of Claims] 1. A cleaning device for collecting debris such as fallen leaves scattered at an athletic competition scene, which is formed by filling the grain of an artificial lawn with dry sand to a predetermined thickness, which comprises: The casing includes a wheeled casing that runs on the lawn, and the casing has a garbage intake opening facing the artificial lawn at the front bottom thereof, and a wheel that rotates in the opposite direction with respect to the traveling direction of the casing inside the garbage intake opening. A rotary brush device for garbage collection, comprising a first rotary brush that is driven, and a second rotary brush that is rotated in the same direction as the traveling direction while being slightly in contact with the first rotary brush; and the rotary brush device. Cleaning for an athletic field made of sand-containing artificial grass, characterized in that it is equipped with a hopper chamber for storing garbage collected in a hopper chamber, and a sieve means made of a wire mesh or the like arranged at the bottom opening of the hopper chamber. Device. 2. The first and second rotating brushes for garbage collection are each operatively connected to a wheel of the casing, and are rotationally driven by the wheel. The cleaning device. 3. The cleaning device according to claim 1 or 2, wherein the first rotating brush includes brushes that are spirally installed along the axial direction of the rotating shaft.