JPH0513504Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a rotating brush suitable for polishing and removing an asbestos layer sprayed onto a wall surface.

(Problems to be solved by conventional techniques and ideas) In recent years, asbestos is considered to be harmful to the human body, and the asbestos layer sprayed on walls has been removed. Grinding is done using a rotating brush with a ring of brush material such as nylon fiber.

By the way, if the asbestos layer is thick (20-60mm)
The brush material meets the resistance of the asbestos layer, making it difficult to move the brush smoothly along the wall surface.

The present invention was developed in view of the above-mentioned circumstances, and provides a rotating brush for grinding asbestos walls that can be moved smoothly along the wall surface even when the asbestos layer is thick, and therefore can perform grinding work efficiently. is intended to provide.

(Means for Solving the Problems) In order to achieve the above object, the gist of the present invention is to attach a cutting tool for cutting the asbestos layer to the rotating brush. That is, in the present invention, a plurality of cutting tools are arranged in a row in the shape of a turbine blade with their cutting surfaces facing toward the outer circumferential direction on the upper surface of a disc-shaped brush stand, and the rotational trajectory of the cutting tools on the upper surface of the brush stand is The blade is characterized in that a plurality of brush members are arranged in a row with their upper ends slightly protruding from the cutting tool.

(Structure) Hereinafter, the present invention will be explained in detail based on examples.

Fig. 1 is a plan view of the rotating brush according to the present invention, Fig. 2 is a view taken along line A-A in Fig. 1, and Fig. 3 is a plan view of the rotating brush of the present invention taken from the main body of the grinding device. FIG. 3 is a cross-sectional view of main parts showing a state in which grinding is being performed.

In the figure, reference numeral 1 denotes a disc-shaped brush stand, and the brush stand 1 has an opening 2 of a predetermined diameter at its rotation center. On the periphery of the upper surface of the brush stand 1, a plurality of blades 3, which are made of a rectangular flat plate member and have a blade surface formed on one long side, are arranged in a row in the shape of a turbine blade, with the blade surfaces facing the outer circumferential direction. ing. In the embodiment, the blade 3 is attached to the brush stand 1 by the bolt 4.
is fixed.

Each of the blades 3 has a brush material 5 made of a metal wire or a bundle of nylon fibers on the back side with respect to the rotating direction (arrow B) of the brush stand 1.
It is attached with its upper end slightly protruding from the cutter 3. The brush material 5 is a strip-shaped steel material 6.
are caulked into a bundle and fixed to the cutting tool 3 via bolts and nuts 7.

Further, a plurality of bolts 11 are installed at appropriate positions on the lower surface of the brush stand 1 for attaching the rotating brush 8 to a grinding device main body 9, which will be described later.

Note that the grinding device main body 9 is a known one,
A drive motor 12, a brush mount 13 fixed to the tip of the drive shaft of the drive motor 12, and the drive motor 1.
2 and a cover member 14 that covers the brush mount 13;
It consists of a flexible suction pipe 15, etc., which has one end connected to the bottom opening of the cover member 14 and the other end connected to a dust collector (not shown). In addition, 16
17 is a handle that holds the grinding device, and 17 is a seal member that prevents asbestos dust from scattering around.

(Function) The rotating brush 8 configured as described above is attached to the brush mount 13 of the grinding device main body 9, and the tip of the brush 8 is pressed against the asbestos sprayed wall surface 18 and rotated, while the grinding device main body 9 When the asbestos layer 19 is moved laterally, most of the asbestos layer 19 is scraped off by the cutting tool 3 along the rotational trajectory of the cutting tool 3, and the remaining part is cut by the brush material 5 along the rotational trajectory of the brushing material 5. removed, resulting in
The asbestos layer 19 on the asbestos sprayed wall surface 18 along the rotational trajectory of the brush material 5 is completely removed.

The asbestos dust removed in this way passes through the through hole 22 of the drive motor mounting base 21 in the grinding device main body 9, passes through the suction pipe 15 from the bottom opening of the cover member 14, and is sent to a dust collector (not shown).
is collected by suction.

(Effects of the invention) According to the invention as described above, even if the asbestos layer is thick, the layer can be easily polished off by the cooperative action of the cutting tool and the brush material in the rotating brush. When moving the brush material along the wall surface, the brush material does not meet the resistance of the asbestos layer.

As a result, the rotating brush can be moved smoothly and the grinding work can be performed efficiently.

In the embodiment, the cutting tool and the brush stand, and the brush material and the cutting tool are each connected with bolts, but welding or other joining methods may be used.

Further, in the embodiment, the brush material is attached to the back side (with respect to the rotational direction) of the cutting tool, but it may be attached to the front side with respect to the rotational direction.

Further, in the embodiment, the brush material and the cutting tool are integrated, but they may be installed separately and independently from each other at the same rotational orbit position on the brush stand.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a plan view of a rotating brush, and FIG.
The arrow view and FIG. 3 are main part sectional views showing a state in which a rotating brush is attached to a grinding device and an asbestos wall surface is being ground. 1... Brush stand, 3... Cutting tool, 5... Brush material, 8... Rotating brush, 9... Grinding device main body, 1
8... Asbestos sprayed wall surface, 19... Asbestos layer.

Claims (1)

[Scope of utility model registration request] A plurality of cutting tools 3 are arranged in a row in the shape of a turbine blade on the upper surface periphery of the disc-shaped brush stand 1 with their blade surfaces facing the outer circumferential direction, and the rotational orbit positions of the cutting tools 3 on the upper surface of the brush stand 1 are arranged in a row. A rotating brush for grinding an asbestos wall surface is characterized in that a plurality of brush members 5 are arranged in a row with their upper ends slightly protruding from the cutting tool 3.