JP3038430B2 - Revolving brush for cleaning concrete formwork - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary brush used for cleaning a concrete formwork.

[0002] Concrete forms, even if they are made of wood, are generally reused rather than disposable. To reuse a concrete form, it is necessary to clean the concrete adhering to the concrete form. Obviously, the cleaning with a rotating brush is convenient.

[0003]

2. Description of the Related Art Conventionally, useful rotary brushes for cleaning concrete forms have not yet been developed, and cleaning of concrete forms depends on manual work. Incidentally, if the rotating brush using the wire brush is used for cleaning the concrete formwork, scratches or scratches due to wires on the formwork surface are innumerable, and the surface of the cast concrete is undesirably roughened. This trend is
Significant for wooden formwork.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to develop a rotary brush for cleaning a concrete formwork which can make the surface to be cleaned a smooth surface without scratches.

Another object of the present invention is to develop a rotary brush for cleaning a concrete formwork which can be mounted on a portable mower with a motor, which is widely used for mowing or the like, and which can perform required cleaning.

Another object of the present invention is to provide an easy operation and good usability when performing necessary cleaning by attaching to the brush cutter.

Another object of the present invention is to make it possible to adjust both the cleaning efficiency and the efficiency of reducing the air resistance caused by the rotation of the brush disk to an appropriate degree according to the output or horsepower of the rotating shaft. I have.

[0008]

Means for Solving the Problems The present invention provides the following 1.2.
3. And a rotary brush for cleaning a concrete formwork.

1. A brush bristle having a diameter of 0.5 to 2.0 mm having a filament yarn containing abrasive grains as a constituent element is inclined rearwardly in the rotating direction of the brush disk on the radial plane of the rotating brush disk so as to be in the center of the disk. Concrete characterized in that the rotating brush disk is planted with hairs, and holes are formed in the rotating brush disk in such a manner that a row is formed from the side to the outside and the rows are arranged side by side in the circumferential direction of the radial plane. Rotary brush for cleaning the formwork.

[0010] 2. A brush bristle having a diameter of 0.5 to 2.0 mm having a filament yarn containing abrasive grains as a constituent element is inclined rearwardly in the rotating direction of the brush disk on the radial plane of the rotating brush disk so as to be in the center of the disk. A row is formed from the side to the outside, and the rows are implanted in the rotating brush disc so that the rows are arranged in the circumferential direction of the radial plane, and the brush bristle row can change the angle of the inclination. Rotary brush for cleaning concrete formwork.

3. A brush bristle having a diameter of 0.5 to 2.0 mm having a filament yarn containing abrasive grains as a constituent element is inclined rearwardly in the rotating direction of the brush disk on the radial plane of the rotating brush disk so as to be in the center of the disk. A row is formed from the side to the outside, and the rows are implanted in the rotating brush disc in such a manner that the rows are arranged in the circumferential direction of the radial plane, holes are formed in the rotating brush disc, and the brush bristle row has the inclined shape. A rotary brush for cleaning a concrete formwork, the angle of which can be changed.

[0012] Here, with respect to the brush bristle row, "inclined backward with respect to the rotation direction of the brush disk" means:
"The brush bristle row is inclined backward with respect to the rotation direction of the brush disc, with the outer end side of the brush disc in the row regarded as the head." This applies to the claims and the following description.

[0013] In the present specification, in relation to the present invention, "brush bristle" refers to a. Single body of filament yarn containing abrasive grains,
B. A single filament yarn containing abrasive grains subjected to resin-impregnated covering of a multifilament yarn, c. A plurality of bundles of filament yarns containing abrasive grains subjected to resin-impregnated covering of multifilament yarns; d. It refers to one obtained by bundling a plurality of filament yarns containing abrasive grains and combining them by an appropriate means such as a resin binder. This is the same for the description in the claims and the following description.

Here, the "resin impregnated covering of the multifilament yarn" is a covering in which the covering of the multifilament yarn is impregnated with a resin.

As used herein, the term "diameter" in "diameter of brush bristle" refers to the diameter of the brush bristle according to the definition given above.

In the present invention, the abrasive content of the filament yarn containing the abrasive is determined by the abrasive / resin composite filament which is used as a constituent element of the brush bristle of the brush roll widely used in the field of the strip polishing technique of the steelmaking industry. It can be about the same as the abrasive content in the yarn.

[0017]

Embodiments of the present invention will be described below with reference to the drawings.

A rotary brush for cleaning a concrete formwork is generally denoted by reference numeral 1. The brush 1 is a filament yarn containing abrasive grains or an abrasive / resin composite filament yarn (hereinafter referred to as a filament yarn containing abrasive grains). The brush bristles 2 having the component 2a) are inclined rearwardly in the rotating direction of the brush disk on the radial plane of the rotating brush disk 10 to form a row from the center side of the disk 10 to the outside. None, the rows are arranged on the rotating brush disk 10 in such a manner that the rows are arranged in the circumferential direction of the radial plane. The brush bristle 2 having the abrasive-containing filament yarn 2a has a diameter of 0.5 to 2.0 mm. A hole 11 is formed in the rotating brush disk 10. The direction of rotation of the brush disk 10 is the direction of the arrow in FIG.

For bristle implantation of the brush bristles 2 on the rotating brush disc 10, a perforation 12 is provided in an appropriate mounting member 13, for example, one flange of an angle iron, and the perforation 12 is formed.
To the bristle bristle 2 in a manner known per se,
A specification in which the flocked angle iron is coupled to the brush disk 10 by bolting can be given as an example.

When such a flocked angle steel is joined to the brush disk 10 by bolting, the disk 10 is provided with a hole 15 for inserting the angle iron, and the flange 15 is connected with the flange to be joined of the angle steel. When the brush of the present invention is attached to the rotating shaft of the sander and used by attaching the brush of the present invention to the rotating shaft of the sander, even if the bolt is loosened, the angled steel with the flocking is disc 10
It was recognized that it was hard to get out of.

[0021] Although not limited, it is preferable that the brush bristle row can change the inclination angle. To do so, for example, the following specifications can be taken.

The above-described flocked angle iron is used as a brush disc 10
To the brush disk 10
First, a bolt hole 14 is drilled at a position corresponding to the angle of inclination of the brush bristle row to be changed, and the connection of the required side end of the flocked angle iron is changed from the initial connection position to the position of the bolt hole 14. Although only one bolt hole 14 is shown for each brush bristle row in the drawing, the present invention is not limited to this. It may be provided at a plurality of predetermined locations.

The brush bristle 2 is a covering obtained by covering a filament yarn 2a containing abrasive grains with a multifilament yarn 2b and impregnated with a resin (see FIGS. 2 to 5). As an example, a single body of the filament yarn containing the abrasive grain without performing the covering (see FIG. 6) can be cited. In the case where the filament yarn 2a is provided with the cover ring C, it does not matter whether the filament yarn 2a is a single filament yarn. 2 to 6, abrasive grains in the filament yarn are omitted.

The cover ring C is a cover ring as shown in FIG. 2 in which the multifilament yarn 2b has a braided structure like a braided structure in a braid, or a composite spiral winding of clockwise and counterclockwise. 3 or a single spiral wound clockwise or counterclockwise as shown in FIG.

The brush bristle 2 may be a bundle (not shown) of a plurality of filaments containing abrasive grains without covering as described above. In this case, the plurality of abrasive-containing filaments 2a are bundled and joined by an appropriate means, for example, a resin binder.

FIG. 7 shows a state in which the brush of the present invention is mounted on a mower with a motor. In FIG. 7, 20 is a brush cutter, 21 is an engine, 22 is a throttle trigger of the engine 21, 23 is a handle, and 24 is a shoulder band.

The rotary brush for cleaning a concrete formwork according to the present invention is obtained by implanting a brush bristle having a diameter of 0.5 to 2.0 mm having a filament thread containing abrasive grains as a constituent element.

With this configuration, when the brush of the present invention is attached to the rotating shaft and the concrete form is cleaned, the cleaning surface of the form is different from that of a rotary brush using a wire brush even when the form is made of wood. It does not occur, but rather has a smooth, polished surface. In this case, if the brush bristle has a diameter smaller than 0.5 mm, the desired cleaning result cannot be obtained because the waist is weak, and if the brush bristle is thicker than 2.0 mm, the waist is too strong and the mold is scratched.

According to the present invention, the brush bristles having the filament yarns containing abrasive grains are arranged in a row on the radial plane of the brush disk from the center side to the outside, and the rows are arranged in the circumferential direction of the radial plane. The hair is implanted in the embodiment.

[0030] This configuration is different from a full flocking such as a brush of an electric floor polisher, in spite of the fact that the filament yarn of the brush bristle contains abrasive grains, the brush has low frictional resistance and mowing. The brush of the present invention is attached to the rotating shaft of a portable brush cutter with a motor, which is widely used, and the like, and the concrete cutter can be easily cleaned using the brush cutter. That is, the easiness of easy movement and small turn of the brush cutter of this type can be utilized for cleaning the concrete formwork at the concrete placing site.

The rows of brush bristles according to the present invention are inclined rearwardly in the direction of rotation of the brush disk on the radial plane of the rotating brush disk, and form a row outward from the center of the disk. This configuration has the following effects.

When the row of brush bristles rubs the surface to be cleaned of the formwork by the rotation of the brush, the force applied to the row of brush bristles in the direction opposite to the rotation of the brush is equivalent to a component force according to the inclination of the row of brush bristles. The minute escapes in the oblique direction of the row. Therefore, the brush bristle row is smoothly rubbed against the surface to be cleaned.

If the rows of brush bristles are inclined in the direction opposite to the direction of rotation of the brush disc on the radial plane of the rotating brush disc, the brush disc will not be perforated and the brush disc will not rotate. When a brush disk is attached to the rotating shaft of a portable brush cutter, the brush bristle sticks to the surface of the concrete form when the brush comes into contact with the surface to be cleaned, usually at 6500 rpm. As a result, the formwork may be scratched. In order to avoid this, when the brush disk is attached to the rotating shaft of the brush cutter, it is necessary to handle the brush cutter to overcome the above-mentioned suction, which makes the operation difficult and inconvenient.

On the other hand, if a hole is formed in the brush disk, the above-mentioned suction does not occur, and it is possible to avoid scratching of the mold due to the collision of the brush bristle, and as a result, as described above. In addition to smooth rubbing of the brush bristle row, cleaning operation is facilitated, and usability of the brush cutter is improved.

The cleaning efficiency is inversely proportional to the angle θ at which the brush bristles are inclined, and the reduction in air resistance due to the rotation of the brush disk due to the inclination is proportional to the angle θ, and both must be of appropriate efficiency. It is self-evident that there is a certain angle corresponding thereto. The angle varies depending on the power or horsepower of the rotating shaft on which the brush disc is mounted. If the angle of inclination of the brush bristles can be changed, the angle of inclination of the brush bristles is adjusted so that both the cleaning efficiency and the air drag reduction efficiency are in accordance with the output or horsepower of the rotating shaft. Can be adjusted.

[0036]

As described above, the present invention can clean a surface to be cleaned to a smooth surface without scratches, and can perform a required cleaning by using a portable brush cutter with a motor. You get the achievement of developing a rotating brush.

Further, according to the present invention, when a brush disk is mounted on a brush cutter with an engine and required cleaning is performed, the operation is easy and good usability is obtained.

According to the present invention, both the cleaning efficiency and the efficiency of reducing the air resistance caused by the rotation of the brush disk can be adjusted to an appropriate degree according to the output or horsepower of the rotating shaft.

[Brief description of the drawings]

FIG. 1A is a plan view showing an example of a brush according to the present invention, and FIG. 1B is a perspective view of the brush shown in FIG. 1A.

FIG. 2 is a perspective view showing an example of a brush bristle used in the present invention.

FIG. 3 is a perspective view of another example of the brush bristle used in the present invention.

FIG. 4 is a perspective view showing another example of a brush bristle used in the present invention.

FIG. 5 shows a perspective view of yet another example of a brush bristle used in the present invention.

FIG. 6 is a perspective view showing another example of a brush bristle used in the present invention.

FIG. 7 is a perspective view showing a state in which the brush of the present invention is attached to a portable brush cutter with a motor.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 rotating brush 10 rotating brush disk 11 hole 12 drilling 13 mounting member 14 bolt hole 2 brush bristle 2a filament yarn with abrasive grains 2b covering multifilament yarn C resin impregnated covering 20 transportable brush cutter with motor

Claims (3)

(57) [Claims] 1. A brush bristle having a diameter of 0.5 to 2.0 mm and having a filament yarn containing abrasive grains as a constituent element is inclined rearwardly on the radial plane of the rotating brush disk with respect to the rotating direction of the brush disk. A row is formed outwardly from the center of the disk, and the rows are arranged in a line in the circumferential direction of the radial plane, and are implanted in the rotating brush disk, and holes are formed in the rotating brush disk . The
When rotating the rotating brush disk, the rotating brush disk
Insert the side of the disk where the brush bristles are
To the surface to be cleaned by communicating with the atmosphere through
The brush bristle is configured to prevent adsorption.
A rotary brush for cleaning a concrete formwork, comprising: 2. A brush bristle having a diameter of 0.5 to 2.0 mm and having a filament yarn containing abrasive grains as a constituent element is inclined rearwardly in a rotating direction of the brush disk on a radial plane of the rotating brush disk. A row is formed outward from the center of the disc, and the rows are implanted on the rotating brush disc such that the rows are arranged in the circumferential direction of the radial plane, and the brush bristle row can change the angle of the inclination. A rotary brush for cleaning a concrete formwork, comprising: 3. A brush bristle having a diameter of 0.5 to 2.0 mm and having a filament yarn containing abrasive grains as a constituent element is inclined rearwardly in a rotating direction of the brush disk on a radial plane of the rotating brush disk. A row is formed from the center of the disc to the outside, and the rows are arranged in the circumferential direction of the radial plane in such a manner that the rows are implanted in the rotating brush disc, holes are formed in the rotating brush disc, and brush bristles are provided. A rotary brush for cleaning a concrete formwork, wherein a row can change the angle of the inclination.