JP4000007B2 - Dust scattering prevention cover for powder and dust spreader - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a dust scattering prevention cover that is used by attaching a granular material such as sand or rubber chips to a machine that scatters on the ground surface during construction of an artificial grass ground containing sand, for example.
[0002]
[Prior art]
The artificial turf ground with sand is usually constructed by spreading sand or rubber chips on the surface of the artificial turf previously laid and filling them between the turf. . In general, a self-propelled spreader is used for this spreading. This spreader is a rotary brush provided at a lower end discharge port of a hopper, and is a type in which sand and rubber chips continuously discharged from the hopper are spattered backward by the brush. During the spraying operation, sand or rubber chips are sprayed uniformly on the ground surface while the sprayer is self-propelled.
[0003]
[Problems to be solved by the invention]
However, since the above-mentioned spreader is a form in which sand or rubber chips are splashed off with a brush and scattered, dust violently rises at the time of spraying, which floats in the air and pollutes the surrounding environment. In particular, when constructed in an indoor stadium, the working environment is severely deteriorated by the scattered dust. To prevent this, it is conceivable to cover the sprayed part with a sheet or the like, but simply covering it will cause the sprayed powder to collide with the sheet surface, causing unevenness in the spraying, and spraying uniformly. The function is impaired, and furthermore, fine dust leaking from the edge of the sheet rises into the air, and dust scattering prevention cannot be achieved.
[0004]
In view of such a point, the present invention is to provide a cover that can prevent the dust from being scattered without impairing the homogeneous dispersion performance of the granular material. Another object of the present invention is to provide a dust scattering prevention cover that can be easily attached to a spreader and used.
[0005]
[Means for Solving the Problems]
The technical means of the dust scattering prevention cover of the present invention comprises a frame body connected to the spreader and a sheet that covers the outer surface of the frame body, and the frame body has a size that does not hinder the spraying, and The lower edge of the covered sheet is brought into contact with the artificial turf surface, and the material of the sheet is selected to generate static electricity by rubbing with the artificial turf.
[0006]
In addition, it is preferable to select a sheet material having a polarity opposite to that of the artificial turf material in the electrification table. Furthermore, it is preferable to attach a wheel to the frame so that it can be detachably connected to the rear part of the spreader. Moreover, it is preferable that the structure of the connection part of a frame and a spreader is made into a pin rotation stop type at the upper part, and an insertion / removal slide type at the lower part.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the dust scattering prevention cover of the present invention will be described based on examples of the drawings. The spreader 1 is self-propelled, and an engine (not shown) or the like is mounted on the front part of the vehicle body, and a hopper 2 for storing powder particles is mounted on the rear part. A rotary brush 3 is provided below the discharge port at the lower end of the hopper 2, and the powder particles continuously discharged from the hopper 2 are spattered back and scattered by the rotary brush 3. The spreader 1 spreads powder particles uniformly on the ground surface while running on the laid artificial grass 4.
[0008]
The scattering prevention cover 10 includes a frame body 11 constituting a skeleton and a sheet 12 covered on the outer surface of the frame body 11. Since the sheet 12 needs to generate static electricity, the material of the sheet 12 is selected so as to easily generate static electricity in relation to the material of the artificial grass. Furthermore, when the sheet | seat 12 is covered, it is comprised so that the lower end may contact the artificial grass 4 and the static electricity generate | occur | produces by the rubbing with the grass accompanying the run of the spreader 1. FIG. The amount of static electricity generated at this time is determined by the relative relationship between the materials of the turf and the sheet, and therefore the material of the sheet is appropriately selected according to the material of the turf. FIG. 2 is a charged row table. In this table, the original combination at the opposite position is preferable for the generation of static electricity. For example, when the artificial turf contains polyester resin or polyethylene resin, As the material, a sheet made of polyamide resin or the like is used. When the artificial turf contains a polyamide resin, a sheet made of polyester resin or the like is used. As a result, a lot of static electricity is generated in the sheet 12 due to rubbing with the artificial turf, and dust can be well adsorbed to the sheet surface by this static electricity.
[0009]
The frame body 11 is made of a steel material and has a sufficient area and an upper space so as not to impair the dispersion. In the embodiment, the length is about 90 cm, the width is about 180 cm, the height is about 60 cm, and the wheel 13 is attached to the lower part. Further, the frame body 11 can be detachably connected to the spreader 1. In addition, since the outer shape of a spreader changes with types, respectively, the connection part of the frame 11 is designed and manufactured suitably according to the shape of the spreader to be used. In the embodiment, the configuration of the connecting portion between the frame body 11 and the spreader 1 is such that the upper connecting portion 15 is a pin rotation stop type and the lower connecting portion 16 is an insertion / removal sliding stop type.
[0010]
That is, the structure of the upper connecting portion 15 is formed by connecting one short pipe 17 attached to the hopper 2 and two short pipes 18 attached to the frame body 11 by inserting the pin rod 19 as shown in FIG. It has a hinge configuration. As a result, the frame 11 is rotatable in the vertical direction with the pin rod 19 as a fulcrum. Reference numeral 20 denotes a split pin for preventing the rod from coming off.
[0011]
Further, as shown in FIG. 5, the lower connecting portion 16 has a structure in which a short rod 22 is provided in a protruding manner on a hinge 21 attached to the hopper 2, while a short tube 23 is provided in a protruding shape on the frame 11. In addition, the short rod 22 and the short tube 23 are detachably coupled. Therefore, the frame body 11 can be slightly tilted, and can be largely rotated upward by removing the coupling. As a result, the frame body 11 well follows the vertical movement of the wheel 13 due to the non-landing of the ground surface, and the frame body 11 can be greatly lifted upward for cleaning the seat.
[0012]
Next, the usage of the above-mentioned scattering prevention cover will be described. First, the frame 11 is attached to the rear part of the spreader 1, and the sheet 12 is put on the outer surface of the frame 11. At this time, the lower edge of the sheet 12 is brought into contact with the artificial grass 4. Further, the edge of the sheet 12 is fixed to the outer wall surface of the hopper 2 with an adhesive tape or the like so that the scattered dust does not leak from the gap. Next, while the spreader 1 is traveling at a constant speed, the stored sand, rubber chips, and the like are allowed to flow out from the lower end discharge port of the hopper 2, and this is splashed back and scattered by the rotating brush 3. Since there is sufficient space inside the cover 10, it is possible to uniformly disperse sand and the like without disturbing the dispersal. Further, static electricity is generated in the sheet due to rubbing between the lower edge of the sheet 12 and the artificial turf 4 due to the traveling of the spreader, and the fine dust that has risen by the scattering is sucked by the static electricity and is attracted to the inner surface of the sheet 12. Adsorb. Thereby, it is possible to disperse the powder particles without causing dust to be scattered outside. The dust adhering to the inner surface of the sheet 12 is appropriately removed after the completion of the spraying operation.
[0013]
The results of various tests conducted on the present invention are as follows.
(Test 1)
Artificial grass Artificial turf sheet with sand with pile containing polyethylene resin Polyamide resin sheet spray with a thickness of 1 mm Rubber chip spray rate with a particle size of 0.6-2.0 mm 2.5 kg / m ²
Spraying speed 20km / h
Spreading time 10 minutes Prepare two types of sheet with the bottom edge of the sheet in contact with artificial grass and those with no contact, perform the spraying operation under the above conditions, and after completion of the work, the rubber powder adhered to the inner surface of the sheet The amount was examined. The adhesion amount of the sheet inner surface 50 cm × 50 cm was 25 g for contact and 10 g for non-contact. Thereby, the effect of dust adsorption by static electricity was found.
[0014]
(Test 2)
Artificial turf Sand-filled artificial turf sheet with pile containing polyamide resin (1), 1 mm thick polyamide resin sheet (2), 1 mm thick polyester resin sheet The other conditions were the same as in Test 1.
In the test in which the type of sheet was changed as described above, the amount of dust attached was 18 g for the polyamide sheet and 26 g for the polyester sheet. As a result, it was found that due to the relative relationship between the material of the artificial turf and the sheet, there is a difference in the amount of dust adhering and the adsorption efficiency can be increased by selecting the material of the sheet.
[0015]
(Test 3)
Scattered material Sand with a particle size of 0.21-1.15 and other conditions are the same as in Test 1 (sheet contact).
The amount of dust attached was 32 g. As a result, it has been found that there is also an adsorption effect on dredged sand.
[0016]
The present invention is not limited to the above-described embodiments, and can be freely modified within the scope of the claims. In particular, the shape of the frame 11, the connection structure between the frame and the spreader, the shape and type of the sheet 12, and the structure of the spreader are free.
[0017]
【The invention's effect】
Since the dust scattering prevention cover of the present invention largely covers the sprayed portion, the sprayed particles do not collide with the sheet surface, the spraying performance is not impaired, and sand or rubber chips can be sprayed uniformly on the ground surface. In addition, static electricity is generated on the sheet due to rubbing with the artificial turf, and the scattered dust will be adsorbed on the inner surface of the sheet and will not leak to the outside. Sometimes it has a big effect.
[0018]
According to the second aspect of the present invention, since the charge train table is used for selecting the material of the sheet, the dust adsorption performance can be effectively enhanced.
[0019]
According to the third aspect of the present invention, since the cover can be easily connected to the spreader, it can be freely attached to and detached from the spreader as required for work, and the workability is good.
[0020]
Since the frame body can be tilted up and down with respect to the spreader in the mounted state, it is not affected by the unevenness of the ground and the cover can be greatly opened upward. Convenient for removing dust adhering to the sheet.
[Brief description of the drawings]
FIG. 1 is a side view of a partial cross section of a cover of the present invention in use.
FIG. 2 is a charged column table.
FIG. 3 is a plan view of a state in which a frame is connected to a spreader.
FIG. 4 is a plan view of an exploded state of an upper connecting portion between a spreader and a frame.
FIG. 5 is a plan view of an exploded state of a lower connecting portion between a spreader and a frame.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Cover 11 Frame 12 Sheet 13 Wheel 15 Upper connection part 16 Lower connection part 17, 18 Short pipe 19 Pin rod 21 Hinge 22 Short rod 23 Short pipe

Claims (4)

It consists of a frame connected to the spreader and a sheet that covers the outer surface of the frame. The frame has a size that does not impede spraying, and the lower edge of the covered sheet contacts the artificial turf surface. In addition, a dust scattering prevention cover for a granular material spreader that has been selected to generate static electricity by rubbing against artificial grass as the material of the sheet. The dust scattering prevention cover for a granular material spreader according to claim 1, wherein the sheet material is selected so that the polarity is opposite to that of the artificial turf material in the electrification table. The dust scattering prevention cover for a granular material spreader according to claim 1, wherein the frame has wheels attached to the lower surface and is detachably connectable to a rear portion of the spreader. The dust scattering prevention cover for a granular material spreader according to claim 3, wherein the connecting structure of the frame body and the spreader is a pin rotation stop type at the upper part and an insertion / removal slide type at the lower part.

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