KR102520331B1 - A wall grinding machine for removing the protruding surface of the wall with a dust scattering prevention function - Google Patents

Abstract

A wall surface grinding machine having a dust scattering prevention function according to the present invention comprises: a support handle member formed with a pipe for sucking dust and provided with a length adjustment part and a manipulation part; a head unit that includes a motor installed to enable angle deformation in any direction by an angle adjusting part installed at an end of the support handle member, a surface grinding tool installed on a rotating shaft of the motor, and a cover unit installed on the motor and surrounding the surface grinding tool; and a dust collection unit connected to the cover unit through a suction/discharge pipe to collect dust generated when polishing a wall using the surface grinding tool, thereby capable of improving workability since the surface grinding tool can be tilted at any angle.

Description

A wall grinding machine for removing the protruding surface of the wall with a dust scattering prevention function }

The present invention relates to a wall surface grinding machine, and more particularly, to a wall surface grinding machine having a dust scattering prevention function capable of preventing the surrounding environment from being polluted by dust scattering during chamfering of protrusions on a concrete wall.

In general, after removing the formwork at various concrete construction sites, a certain part of the formwork mark protrudes from the formwork boundary of the concrete surface to form a step with the surface of the concrete wall. In this case, the concrete wall surface is polished, that is, chamfered, using a surface polishing device such as a grinder to remove formwork marks formed during curing.

As described above, the polishing device for polishing the cured concrete wall surface prevents scattering by collecting concrete dust generated in the grinding process using a suction means.

However, the conventional polishing device has a problem in that it cannot collect during the grinding operation of the concrete wall because the suction induction performance is lowered due to concrete dust or foreign matter generated during the polishing process. In addition, conventional polishing apparatuses do not smoothly adjust the angle of the polishing head when polishing the inner, outer wall or ceiling surface, making it difficult to increase work efficiency.

Republic of Korea Utility Model Registration No. 20-0263384 discloses a dust collection cover with an adjustable incline grinding blade for a surface dust collection polishing device. The posted dust collection cover includes a cover body in which the head of the hand grinder is mounted on the mount to collect polished dust and send it to the suction means through the hollow handle and connecting pipe,

In the mount, the rotation pins on both sides are rotatably inserted into the support of the cover body, and a plurality of hooking grooves are installed at the tip thereof, so that the hook piece elastically supported by the spring is inserted into the cover body, so that the mount is constant with respect to the cover body. It has a configuration to be lifted at an angle.

Korean utility model registration application No. 2001-512 discloses a dust collection cover for a surface polishing device. Although the surface polishing function of the posted dust collection cover is improved, it is difficult to perform partial intensive polishing because it is impossible to adjust the inclination of the cutting edge.

In addition, Korean Patent Registration No. 10-1151487 discloses a grinding wheel for a dry grinder, and Korean Patent Publication No. 10-2009-0130579 discloses a concrete surface treatment device having a dust collection function.

The posted surface treatment device includes a dust collector in which dust polished from the concrete surface is temporarily stored; a handle mounted on the outside of the dust collection container; It is mounted inside the dust collector and is mounted so as to be in contact with the concrete surface, and includes a polishing device having a concave-convex portion formed on an outer circumferential surface.

Since the conventional cotton processing apparatus configured as described above cannot smoothly collect dust generated during surface treatment, the dust is scattered to the outside and pollutes the working environment. In particular, there is a problem of increasing the weight of the head portion of the surface treatment device due to the relatively complex angle adjustment unit of the motor installed on the head side to drive the surface treatment device. This has a problem in that a worker performing a chamfering operation of a concrete wall is easily fatigued.

Republic of Korea Patent Registration No. 10-1129373 discloses an environmentally friendly surface treatment device and surface treatment method for steel plates and concrete without scattering dust.
And Korean Patent Publication No. 10-2013-002643 discloses a portable vacuum dust collection standing grinder using a cyclone.
The posted grinder includes a polishing machine, a vacuum dust collector connected to the polishing machine and having a cyclone device and a dust box, wherein the polishing machine includes: a head part having a polishing pad for polishing a surface; a hand unit having a driving motor generating a driving force for rotating the polishing pad and an on/off switch; It is configured to include; a connecting rod connecting the head part and the hand part and serving as a passage for the inhaled dust.
The above-described grinder head has a structure separated from the motor and transmits power using a flexible shaft of the motor, so the structure is relatively complex and power loss of the motor may increase. In addition, since the head part has a structure in which the side surface and upper surface of the abrasive wheel are covered by a cover, the inflow of air from the outside is not smooth, resulting in a relatively large suction load.
Republic of Korea Patent Publication No. 10-2014-0093432 discloses a polishing pad and an air grinder including the same. The dust collecting part of the air grinder is provided along the circumference of the dust collecting cover under the dust collecting cover and includes a blocking member spaced apart from the polishing surface.
Since the above-described grinder has a blocking member formed over the entire surface, there is a problem in that the amount of air introduced into the dust collecting cover cannot be arbitrarily adjusted.

Republic of Korea Utility Model Registration No. 20-0263384. Korean utility model registration application No. 2001-512. Republic of Korea Patent Publication No. 10-2014-0093432. Republic of Korea Patent Publication No. 10-2013-002643.

The present invention is to solve the above-mentioned problems, it is possible to reduce the weight of the head part for face grinding of the concrete wall, and to tilt the face cutting tool at an arbitrary angle, thereby improving workability. It is an object of the present invention to provide a wall surface grinding machine having a function of preventing dust scattering, which can prevent dust generated during grinding operations from scattering to the outside, thereby preventing contamination of the surrounding environment by dust.

Another object of the present invention is to realize a lightweight head part by separating a motor for driving the head part and the face cutting tool and a dust collection unit for collecting dust generated during face cutting, and dust scattering that can improve work efficiency. It is to provide a wall face mill with a prevention function.

In order to achieve the above object, the wall surface grinding machine having a function of preventing dust scattering of the present invention has a pipe line for sucking dust and a support handle member provided with a length adjustment unit and an operation unit,

A motor installed to enable angular deformation in an arbitrary direction by an angle adjusting unit installed on the end side of the support handle member, a chamfering tool installed on the rotating shaft of the motor, and a chamfering tool installed on the motor to cover the upper surface of the chamfering tool A head unit including a cover unit;

It is characterized by having a dust collection unit connected to the cover unit by a suction discharge pipe in order to collect dust generated when the wall surface is polished by the chamfering tool.

In the present invention, the cover member is formed with a skirt portion having an opening portion by a brush fixed to an edge of the cover body by a fixing means, and is rotatably supported in the center of the cover body by opening and closing the opening portion of the skirt portion. A blocking cover member is installed. A blocking brush may be installed on the blocking cover member at the same height as the brush.

The dust collection unit has a dust collection tank having a dust collection space, a vacuum suction pump installed on the side of the dust collection tank, the suction discharge pipe and the cyclone inlet connected, and the discharge port is connected to the vacuum suction pump to ride on the air It is provided with a cyclone that separates the inhaled dust from the air and stores it in the dust collection space.

In order to chamfer the concrete wall surface, the wall face grinding machine with dust scattering prevention function according to the present invention has a lightweight head supported on the handle member where the chamfering tool is installed, and the chamfering tool and the cover member can be rotated at an arbitrary angle. It can improve work efficiency.

In particular, the present invention can fundamentally prevent dust generated during polishing of the wall surface from scattering to the surroundings to pollute the surrounding environment, and it is possible to continuously collect dust during the work. This can fundamentally solve the problem caused by the clogging of the filter and not collecting the dust as in the prior art.

1 is a perspective view of a wall face grinding machine with dust scattering prevention function according to the present invention;
Figure 2 is an exploded perspective view of the wall face mill shown in Figure 1;
3 is a perspective view illustrating an excerpt of a cover unit;
Figure 4 is a cross-sectional view of the dust collection unit shown in Figure 2;
5 is an exploded perspective view showing a state in which a brush is installed in a cover unit;
Figure 6 is a side view showing the use state of the dust scattering prevention function of the wall surface grinding machine according to the present invention.

In the present invention, a wall sanding machine having a function of preventing dust scattering is for chamfering a concrete wall, and one embodiment is shown in FIGS. 1 to 4.

Referring to the drawings, the wall sweeper 10 having a dust scattering prevention function according to the present invention has a conduit for sucking dust, and a support handle member 20 provided with a length adjustment unit 21 and a control unit 25 and , a motor 41 installed to enable angular deformation in the vertical direction by the angle adjusting unit 30 installed at the end side of the support handle member 20, and a chamfering tool installed on the rotation shaft of the motor 41 ( 45), and a head unit 40 including a cover member 50 installed on the motor 41 and covering the upper surface of the chamfering tool 45.

In addition, a dust collecting unit 70 connected to the cover member 50 by a suction discharge pipe 60 is provided to collect dust generated when the wall surface is polished by the grinding tool 45 .

The wall surface grinding machine having the dust scattering prevention function according to the present invention configured as described above will be described in detail for each component as follows.

The head unit 40 rotatably installed in the up and down direction by the angle adjusting unit 30 at one end side of the support handle member 20 has the motor cover 42 on the angle adjusting unit 30 in the up and down direction. It is installed to be able to change each step, and a motor 41 for rotating the chamfering tool 45 is installed inside the motor cover 42. In addition, a chamfering tool 45 is installed on the rotating shaft of the motor 41 installed on the motor cover 42, and the upper surface of the chamfering tool 45 is covered by a cover member 50 fixed to the motor cover 42. do. The cover member 50 is further provided with a skirt portion 55 for covering the side surface of the chamfering tool 45. As shown in FIGS. 2 and 3, the skirt portion 55 is the cover member ( Brushes 56 fixed by the fixing means 80 are installed at the edges of 50), that is, except for the opening 57, the opening 57 where the brush 56 is not installed is a chamfering tool. When (45) is rotated, smooth inflow of air is induced toward the chamfering tool (45). A blocking cover member 59 for opening and closing the opening 57 is rotatably installed at the center of the cover member 50 . The blocking height of the blocking cover member 59 for opening and closing the opening 57 is substantially the same as that of the brush 56. However, it is not limited thereto, and a blocking brush 59a may be installed at the same height as the brush 56 in the blocking cover member 59 .

As the fixing means 80 for fixing the brush, as shown in FIG. 5, a brush seating portion 81 is formed on the edge of the cover member 50, and the brush 56 is fixed thereto, and the brush A fixing member 82 for fixing the brush 56 is coupled to the seating portion 81 . A fixing pin 83 is installed at the boundary of the brush seating portion 81 and the fixing member 82 or at the edge of the cover member, and the fixing pin and the coupling hole 84 formed in the fixing member 82 and It has a structure that connects.

The angle adjustment unit 30 for adjusting the angle of the head unit 40 in the vertical direction with respect to the support handle member 20 is fixed to the handle support member 20 and includes a plurality of angle dividing holes 31 in the circumferential direction. It has a disk member 32 on which they are formed, and a coupling member 33 installed on the motor cover 42 of the head unit 40 and coupled to both sides of the disk member 32, the coupling member 33 has An angle fixing pin (not shown) coupled to the selected angle dividing hole 31 is installed. The angle fixing pin installed in the coupling member may have a structure that is coupled to and separated from the coupling member.

And, as shown in FIGS. 2 and 4, the dust collection unit 70 is connected by the cover member 50 and the suction discharge pipe 60 to remove dust generated during chamfering of the concrete wall by the chamfering tool 45. For collection, a dust collection tank 71 having a dust collection space 72 therein is provided.

A vacuum suction pump 72 and a cyclone 75 are installed in the dust collection tank 71, and the inlet 76 of the cyclone 75 is connected to the cover member 50 by the suction discharge pipe 60. connected, and the discharge port 77 of the cyclone 75 is connected to the suction port of the vacuum suction pump 72. A blower for suction may be used as the vacuum suction pump.

The cyclone 75 has an upper and lower narrow cylindrical body 75a on the side of which air and dust are sucked, a discharge port 77 through which air is discharged is formed on the upper side, and a difference in specific gravity between air and dust is formed on the lower side. A dust outlet 78 for discharging the separated dust to the dust collection tank 71 is formed, and the inlet 76 is formed on the side of the cylindrical body 75a. The inlet 76d is inclined so that the air flowing in can spiral along the outer circumferential surface of the cylindrical body 75a.

The operation of the wall face grinding machine having the dust scattering prevention function according to the present invention configured as described above will be described as follows.

In order to chamfer the wall surface of a concrete building using a beveling machine according to the present invention, as shown in FIGS. 1 to 6, the length of the support handle member 20 is adjusted using the length adjusting unit 21 to suit the operator's body. And, the angle of the head unit 40 is adjusted using the angle adjusting unit 30 . In this state, the motor 41 is driven to rotate the chamfering tool 45. In addition, the worker grips the support handle member 20 and brings the chamfering tool 45 into close contact with the wall surface of the concrete for chamfering to perform a chamfering operation.

As described above, in the process of performing the chamfering operation, the bevel tool 45 of the head unit 40 is used to perform the chamfering operation of the slope and irregularities of the concrete wall. Since the angle adjusting unit 30 is installed in the head unit 20, it is possible to bring the grinding tool 45 into close contact with the grinding surface of the concrete wall while minimizing the angle of the support handle member 20 held by the operator. Therefore, the chamfering efficiency of the chamfered surface can be increased.

On the other hand, since the brush 56 is installed in the skirt portion 55 of the cover member 50, the wall surface chamfered by the chamfering tool 45 can be brushed to prevent dust from adhering to the wall surface. In particular, since the opening portion 57 of the skirt portion 55 where the brush 56 is not installed can be opened and closed by the blocking cover member 59, the intake amount of air in which dust is carried can be adjusted.

The dust generated during chamfering of the concrete wall is prevented from spreading to the outside by the cover member 23, and this dust passes through the suction discharge pipe 60 of the cover member 50 to the inlet 76 of the cyclone 75. is introduced

In this way, the dust that is carried along with the air and introduced into the inlet 76 rotates along the inner circumferential surface of the cylindrical body 75a of the cyclone 75, generating vortexes and reducing speed, and the dust is reduced in speed by its own weight It is collected into the dust collection space 72 through the dust outlet 78 installed at the lower part of (75a).

In this process, air is discharged through the outlet 77. The dust can be collected smoothly because the specific gravity is relatively heavy because the concrete wall is ground, but the above-described cyclones may be installed in multiple stages to increase the collection rate of dust.

In this case, dust can be collected in multiple stages by introducing air discharged through the air outlet of the cyclone into the inlet of the cyclone at the rear stage.

Such continuous collection of dust can prevent the hassle of periodically cleaning the filter as in the conventional filter method, and can solve the problem that dust contaminates the environment around the work, making it difficult to perform the chamfering operation.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is only exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the attached registered claims.

Claims (3)

A support handle member 20 having a conduit for sucking dust and having a length adjustment unit 21 and a control unit 25,
A motor 41 installed to enable angular deformation in an arbitrary direction by the angle adjusting unit 30 installed at the end side of the support handle member 20, and a chamfering tool installed on the rotating shaft of the motor 41 ( 45) and a head unit 40 including a cover member 50 installed on the motor 41 and surrounding the chamfering tool 45,
The cover member 50 has an opening for inducing smooth inflow of air toward the face cutting tool 45 when the face cutting tool 45 rotates, and a skirt portion 55 for covering the side surface of the face cutting tool 45. A brush 56 fixed by the fixing means 80 is installed in the skirt portion 55 except for the opening 57, and the opening 57 is installed in the center of the cover member 50. A blocking cover member 59 for opening and closing is rotatably installed, and a blocking brush 59a is installed at the same height as the brush 56 on the blocking cover member 59 for opening and closing the opening 57. become,
In the fixing means 80 for fixing the brush 56, a brush seating portion 81 is formed at the edge of the cover member 50, and the brush 56 is fixedly installed thereto, and the brush seating portion 81 has A fixing member 82 for fixing the brush 56 is coupled, and a fixing pin 83 is installed at the boundary between the brush seating portion 81 and the fixing member 82 or at the edge of the cover member, and the fixing member A coupling hole 84 coupled to the fixing pin 83 is formed in (82),
A dust collection unit 70 connected by the cover member 50 and the suction discharge pipe 60 is provided to collect dust generated when the wall surface is polished by the chamfering tool 45,
The dust collection unit 70 is between a dust collection tank 71 having a dust collection space 72, a vacuum suction pump 72 installed on the side of the dust collection tank 71, and the suction discharge pipe 60. The suction port 76 of the crone is connected and the discharge port 77 is connected to the vacuum suction pump 72 to separate the dust that is sucked into the air and separates it from the air and stores it in the dust collecting space 72. Cyclone 75 Wall surface grinding machine with dust scattering prevention function, characterized in that provided.
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