KR102546562B1 - Apparatus for removal of paint or rust for bridge - Google Patents

Abstract

The present invention relates to a painting and rust removal device for bridges, and more particularly, to a painting and rust removal device for bridges that removes paint or rust by spraying powder on a work surface of a bridge structure.
The bridge painting and rust removal device according to the present invention includes a head body having a space for painting or removing rust, and installed on the head body to be located in the space and driven by a driving unit to contact the surface of a workpiece to paint. or a head unit having at least one brush for removing rust and a handle installed on the head body so that the operator can remove the rust on the work object by gripping the head body; At least one nozzle installed in the head main body, a compressor connected to the nozzle and supplying high-pressure air through a pneumatic pipe, and a high-pressure air connected to the pneumatic pipe and supplied to the nozzle by the compressor A sanding unit having a powder supply unit for supplying powder in a piggybacked manner; and a dust collecting unit connected to the head body through an intake pipe and configured to collect and collect the powder, paint, or rust in the space.

Description

Apparatus for removal of paint or rust for bridge {Apparatus for removal of paint or rust for bridge}

The present invention relates to a painting and rust removal device for bridges, and more particularly, to a painting and rust removal device for bridges that removes paint or rust by spraying powder on a work surface of a bridge structure.

In general, steel structures such as iron bridges or ships are subjected to rust prevention treatment on the surface of steel materials. However, the rust-preventive material formed on the surface of such a steel material is degraded by external air over time and peels off or rust occurs. There is a need to remove such rust to protect the steel material.

There are several conventional methods for removing rust and paint from steel structures, but the hand grinder method using double abrasives takes a long time to work, lowers work efficiency, and makes mistakes by workers. There is a risk of damaging the bridge structure.

Due to the problems described above, Korean Patent Registration No. 10-2132382 discloses a paint removal device and method for maintenance of a bridge structure capable of removing paint or rust by spraying sand on a work object.

Such a paint removal device and method for maintenance of a bridge structure enables a sandblast operation to remove rust or paint on the surface of a casting or steel by spraying sand on a work object, in which the sand is radiated over a wide area. It has the advantage of enabling rapid work.

However, the paint removal device and method for maintenance of the bridge structure described above have the disadvantage of requiring sand adhering to the surface of the work object or rust or paint remaining on the surface of the work object for repainting after work. there is

Republic of Korea Patent Registration No. 10-2132382: Painting removal device and method for maintenance of bridge structures

The present invention is to improve the above problems, and an object of the present invention is to provide a bridge painting and rust removal device capable of spraying powder such as sand on a work object and simultaneously scraping the surface of the work object.

In order to solve the above technical problem, the bridge painting and rust removal device according to the present invention is installed on the head body having a space for removing paint or rust, and is installed on the head body to be located in the space and driven by a driving unit a head unit having at least one brush that contacts the surface of a workpiece to remove paint or rust, and a handle installed on the head body to allow an operator to hold the head body to remove rust from the workpiece; At least one nozzle installed in the head main body, a compressor connected to the nozzle and supplying high-pressure air through a pneumatic pipe, and a high-pressure air connected to the pneumatic pipe and supplied to the nozzle by the compressor A sanding unit having a powder supply unit for supplying powder in a piggybacked manner; and a dust collecting unit connected to the head body through an intake pipe and configured to collect and collect the powder, paint, or rust in the space.

The driving unit is an air motor that is connected to the pneumatic pipe and drives the brush by high-pressure air supplied from the compressor.

The head body is foldably coupled by a mutual hinge shaft to remove paint or rust on the surface of the workpiece bent at a predetermined angle, and includes first and second housings in which at least one brush is respectively installed.

Among the brushes installed in the first housing, the brush located on the front side is installed on a protrusion extending from the first housing to the second housing to remove rust at the corner of the bent workpiece.

First and second sealing members are further provided on the first and second housings to prevent powder sprayed from the sanding unit or removed rust from being discharged to the outside at a side corresponding to the protrusion.

The head unit further includes at least one grinding roller which is rotationally driven by the driving unit and contacts the surface of the workpiece to remove paint or rust.

1 is a conceptual diagram for explaining a painting and rust removal device for a bridge according to an embodiment of the present invention;
2 is a main perspective view for explaining the head unit of FIG. 1;
3 is a side cross-sectional view for explaining a head unit according to another embodiment of the present invention;
4 is a main perspective view for explaining a head unit according to another embodiment of the present invention;

Hereinafter, with reference to the accompanying drawings, a painting and rust removal device for a bridge according to the present invention will be described in detail.

1 and 2 show a bridge painting and rust removal device according to an embodiment of the present invention. Referring to the drawings, the bridge painting and rust removal device according to an embodiment of the present invention is connected to the head unit 100 for removing paint or rust by being in close contact with the work object A, and the head unit 100 and a sanding unit 200 installed so as to be installed, and a dust collecting unit 300 connected to the head unit 100 to collect powder, paint or rust in the head unit 100.

The head unit 100 includes a head body 110, a handle 130 installed on the head body 110 and gripped by an operator, and at least one brush 140 installed inside the head body 110. ) and a driving unit for driving the brush 140.

The head body 110 has a space portion 111 formed therein, and is formed in a box shape with one front side facing the surface of the workpiece A open. The head body 110 has a sealing member 113 installed so as to surround the outer circumferential surface along the outer circumferential surface of the front portion. The sealing member 113 extends forward and is made of a material having flexibility so as to spread in a direction away from each other as the head body 110 is in close contact with the work object A. The sealing member 113 may be made of rubber or fiber. A dust collection pipe 320 to be described later is connected to the lower part of the head body 110.

The handle 130 is installed at the rear of the head body 110. The handle 130 extends in a bar shape so that the user can easily move the head body 110 up, down, left and right by gripping it. In this embodiment, two handles 130 are provided and are installed at positions spaced apart from each other.

The brush 140 is installed to be located in the space part 111 . The brush 140 of the head body 110 includes a shaft 141 rotatably supported by the head body 110 and a plurality of brushes 142 installed on an outer circumferential surface of the shaft 141.

The shaft 141 is formed in a cylindrical shape extending left and right. A plurality of shafts 141 are installed in the vertical direction. The shaft 141 is rotatably supported in the head body 110 . The shaft 141 is installed to be rotated by the driving force of the air motor 150 of the driving unit to be described later.

A plurality of strands of the brushes 142 are installed on the outer circumferential surface of the shaft 141 along the circumferential direction. The brushes 142 are made of a metal material that can easily peel rust or paint from the surface of the workpiece.

The driving unit is connected to a driving pneumatic supply pipe 224 of the pneumatic pipe 220 to drive the brush 140 by high-pressure air supplied from the compressor, the air motor 150, and the air motor ( and a gear box 155 for transmitting the driving force exerted from 150 to the shaft 141.

The sanding unit 200 includes at least one nozzle 210 installed on the head body 110 and a compressor 230 connected to the nozzle 210 through a pneumatic pipe 220 to supply high-pressure air. And, it is connected to the pneumatic pipe 220 and has a powder supply unit 240 for supplying powder to ride on the high-pressure air supplied to the nozzle 210 by the compressor 230.

The nozzle 210 is formed in a tubular shape having a hollow inside. The nozzle 210 is fixedly installed inside the head body 110 . The nozzle 210 has at least one injection hole communicating between the hollow part and the space part 111 . At this time, the injection hole is formed to face the open front side of the head body 110 . Although not shown in the drawing, the nozzle 210 may be provided with a jetting direction changing means (not shown) capable of changing the direction of the jetting hole through a user's manipulation.

The pneumatic pipe 220 is formed of a flexible hose. The pneumatic pipe 220 has one side connected to the compressor 230 and the other side connected to the nozzle 210 . The pneumatic pipe 220 provides a passage through which the high-pressure air supplied from the compressor 230 is supplied to the nozzle 210 . The pneumatic pipe 220 is centered around the powder supply pipe connection part 221 to which the powder supply pipe 255 to be described later is connected, and the first pneumatic pipe section 222, which is the section between the powder supply pipe connection part 221 and the compressor 230, , It is divided into a second pneumatic pipe section 223, which is a section between the powder supply pipe connection part 221 and the nozzle 210. The air motor 150 is connected to the first pneumatic pipe section 222 through a driving pneumatic supply pipe 224 so that air pressure supplied from the compressor 230 is supplied to the air motor 150 .

The powder supply unit 240 includes a reservoir 250 in which a large amount of powder 241 can be stored, and a powder supply pipe 255 connecting the reservoir 250 and the pneumatic pipe 220. The powder supply pipe 255 has one side connected to the lower part of the reservoir 250 and the other side connected to the powder supply pipe connection part 221 of the pneumatic pipe 220. The powder supply pipe 255 provides a flow path through which the powder 241 in the reservoir 250 is supplied to the pneumatic pipe 220 . The powder 241 in the powder supply unit 240 is supplied to the powder supply tube connection unit 221 through the powder supply pipe 255, and is then transferred to the nozzle 210 by riding on the high-pressure air supplied from the compressor 230. are supplied Then, the powders 241 supplied to the nozzle 210 are sprayed forward of the head body 110 .

The dust collecting unit 300 is installed in a dust collecting tank 310, a dust collecting pipe 320 interconnecting the dust collecting tank 310 and the head body 110, and the dust collecting tank 310 to the dust collecting pipe. It includes a blower 330 that exerts a suction force to suck powder, rust and paint in the head body 110 through 320.

The dust collecting tank 310 is provided with a storage space capable of storing powder, rust, and paint sucked through the dust collecting pipe 320 therein. The dust collection tank 310 includes a filter (not shown) capable of collecting powder, rust, and paint introduced into the inside through a dust collection pipe 320 to be described later. The dust collecting tank 310 may include a separate screen capable of filtering only powder from mixed powder, rust, and paint sucked from the dust collecting pipe 320 . In addition, the dust collecting unit 300 may further include a powder resupply means (not shown) for resupplying the powder introduced into the dust collecting tank 310 to the storage container 250 of the powder supply unit 240.

A flexible hose may be applied to the dust collector 320 . The dust collecting pipe 320 is installed so that one side is connected to the dust collecting tank 310 and the other side is connected to the lower part of the head body 110. The dust collecting pipe 320 provides a passage through which powder, rust and paint in the space 111 of the head body 110 are sucked and introduced into the dust collecting tank 310 .

As described above, the painting and rust removal device for bridges according to an embodiment of the present invention sprays powder on the surface of the work object A through the sanding unit 200 to perform a sandblasting operation of removing paint or rust, At the same time, by scraping the surface of the work object (A) through the brush 140 to minimize powder, paint and rust remaining on the work object, it has the advantage of improving work efficiency.

The head unit 100 may be configured in various forms to effectively perform painting and rust removal of bridges. 3 and 4 show another embodiment of the head unit 100 .

Referring to FIG. 3, the head unit 100 is installed in the space part 111 and is driven by the drive unit to contact the surface of the workpiece A to remove paint or rust (at least one grinding roller) 160) is further provided.

The grinding roller 160 includes a roller unit 161 rotatably supported inside the head body 110, and a grinding roller unit 161 installed in contact with the surface of the workpiece A on the outer circumferential surface of the roller unit 161. section 162. The roller unit 161 is installed to be rotated by a driving unit in the same way as the shaft 141 described above.

Sandpaper installed on the outer circumferential surface of the roller unit 161 or an abrasive member having a predetermined roughness may be applied to the grinding unit 162 . The grinding roller 160 is rotated by a driving unit, and the grinding unit 162 grinds rust or paint on the surface of the workpiece A.

The grinding roller 160 as described above exhibits an advantage of improving work efficiency by grinding rust or paint having a thick thickness on the surface of the work object A in a plane-by-plane unit.

In addition, FIG. 4 shows a configuration in which the head body can be bent. Referring to the drawings, the head body 170 is hinged to each other to remove rust or paint on the surface of the work object (A) bent or bent at a predetermined angle, and the first and second foldable angles are variable. 2 housings (171, 173) and a protrusion extending from one side of the first or second housings (171, 173) facing each other to remove paint or rust on the corner of the workpiece (A). .

The protrusion includes a first protrusion 171b formed on the first housing 171 and a second protrusion 173b formed on the second housing 173 .

The first housing 171 has a space 111a formed therein, and a front portion facing the workpiece A and a side portion adjacent to the second housing 173 to be described later are formed in an open box shape. . The first housing 171 is connected to the dust collecting pipe 320 . The first protrusion 171b protrudes from an end adjacent to the second housing 173 of the side wall portion 171a of the first housing 171 facing each other in a direction toward the second housing 173.

The second housing 173 has a space portion 111b formed therein, and is formed in a box shape with a front portion facing the workpiece A and a side portion adjacent to the first housing 171 open. The second housing 173 is hinged so that an angle formed with the first housing 171 is variable. At this time, the first and second housings 171 and 173 are hinged so that each open front part rotates in a direction away from each other. In this embodiment, the protrusions are respectively formed on the first and second housings 171 and 173, but, differently from this, a configuration formed on only one of the first or second housings 171 and 173 may be applied.

In addition, the protrusion is a configuration for removing rust or paint on the surface of the work object (A) bent or bent at a predetermined angle, and a configuration omitted differently from this may be applied.

The second protrusions 173b protrude from the mutually facing sidewalls 173a of the second housing 173 in a direction toward the first housing 171, but are staggered so as not to interfere with the first protrusions 171b. do. The brush 140 is installed between the first protrusions 171b of the first housing 171 .

The first and second protrusions 171b and 173b cover a space that is opened as the first and second housings 171 and 173 rotate at a variable angle, thereby preventing powder from the space parts 111a and 111b ( 241) and foreign substances such as paint are prevented from leaking out.

The first and second housings 171 and 173 are hinged so that the angle formed by the front portions of the respective space portions 111a and 111b can be varied. At this time, in a state where the first and second housings 171 and 173 are bent at right angles to each other, the grinding roller or brush installed on the first protrusion 171b of the first housing 171 may contact the work object A. installed in a location

The first and second housings 171 and 173 have first and second sealing members 113a for preventing powder sprayed from the sanding unit 200 or removed rust from being discharged to the outside on the side corresponding to the protrusion, 113b) is further provided.

The first and second sealing members 113a and 113b are divided into a first sealing member 113a installed in the first housing 171 and a second sealing member 113b installed in the second housing 173. In this embodiment, the first and second sealing members are individually installed in the first and second housings 171 and 173, but are a single unit whose shape changes as the first and second housings 171 and 173 are folded. What is made of a member may be applied. The first and second sealing members 113a and 113b extend to cover the connecting portion of the first and second housings 171 and 173 to prevent rust, powder, and foreign matter leaking from the inside of the first and second housings 171 and 173. It is preferably formed to prevent outflow.

The brushes include at least one first brush 140a or 140b installed in the first housing 171 and a second brush 140c installed in the second housing 173 .

And at least one of the first or second brushes is installed on the protrusion. In this embodiment, two first brushes 140a and 140b are installed on the first housing 173, and one of the first brushes 140a is installed on the first protrusion 171b. In addition, unlike the present embodiment, the grinding roller described above may be further provided, and the grinding roller may be installed in the first or second housings 171 and 173 .

Also, although not shown in the drawings, in this embodiment, the driving unit transfers the first air motor installed in the first housing 171 and the driving force of the first air motor to the first brushes 140a and 140b. It includes a first gearbox, a second air motor installed in the second housing 173, and a second gearbox for transmitting the driving force of the second air motor to the second brush 140c.

The first and second air motors are connected to a driving pneumatic supply pipe (not shown) to exert a driving force by individually supplied pneumatic pressure. Unlike this, one air motor is installed to be connected to the gearbox, and the gearbox provides driving force to the respective brushes or grinding rollers whose positions change as the angles of the first and second housings 171 and 173 change. A corresponding configuration may be applied so that it can be delivered.

The nozzle 210 is installed to be connected to the first nozzle part 213a installed to be connected to the space part 111a of the first housing 171 and to the space part 111b of the second housing 173. and a flexible hose 215 interconnecting the first and second nozzle parts 213a and 210b.

The first nozzle part 213a is fixedly installed in the space part 111a of the first housing 171 . The other side of the first nozzle part 213a in the longitudinal direction extends toward the space part 111b of the second housing 173. The flexible hose 215 to be described later is connected to the other side of the first nozzle supply section 213b. The first nozzle part 213a is branched so that the middle part faces the space part 111a of the first housing 171, and the spray hole is formed to face the workpiece A in close contact with the first housing 171. The powder supplied through the second pneumatic pipe section 223 removes the paint and rust of the work object A in close contact with the first housing 171.

The flexible hose 215 is flexible so that its length can be lengthened or shortened, and a corrugated tube having flexibility is applied so that the angle formed by one side and the other side along the longitudinal direction can be bent or stretched so that the angle is variable. The flexible hose 215 is installed so that one side in the longitudinal direction is connected to the first nozzle supply section 213a and the other side is connected to the second nozzle unit 210b to be described later.

The second nozzle part 210b is fixedly installed in the space part 111b of the second housing 173. The second nozzle unit 210b has one side connected to the flexible hose 215 to provide a flow path through which the powder 241 supplied from the first nozzle supply section 213a can be injected to the other side through the flexible hose 215. to provide. The second nozzle part 210b extends with the other side toward the front of the second housing 173, and has a spray hole so that the powder 241 and high-pressure air supplied through the flexible hose 215 can be sprayed forward. is formed to face

As described above, in the head unit 100, which is bent at a variable angle, the second housing 173 is folded to form a predetermined angle with the first housing 171 so that the first protrusion 171b forms the first and second housings. (171, 173) through the first brush (140a) installed on the first protrusion (171b) to effectively perform painting and rust removal work in a narrow area such as the corner of the workpiece (A) has the advantage of

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

100: head unit 110: head body
120: hood 130: handle
140: brush 160: grind roller
200: sanding unit 300: dust collection unit

Claims (6)

A head body having a space for removing paint or rust, at least one brush installed on the head body to be located in the space and driven by a driving unit to contact the surface of a workpiece to remove paint or rust, the head a head unit installed on the main body and having a handle for holding the head main body so that a worker can remove rust from a work object;
At least one nozzle installed in the head body, a compressor connected to the nozzle and supplying high-pressure air through a pneumatic pipe, and a compressor connected to the pneumatic pipe to ride on the high-pressure air supplied to the nozzle by the compressor. a sanding unit having a powder supply unit for supplying powder;
It is connected to the head body through an intake pipe and has a dust collection unit for sucking and collecting the powder, paint or rust in the space.
The head body is foldably coupled by mutual hinge shafts so as to remove paint or rust on the surface of the workpiece bent at a predetermined angle, and has first and second housings in which at least one of the brushes are respectively installed, ,
Among the brushes installed in the first housing, the brush located on the front side is installed on a protrusion extending from the first housing to the second housing to remove rust at the corner of the bent work object,
The protruding portion includes a first protruding portion formed on the first housing and a second protruding portion formed on the second housing, wherein the first housing has a space formed therein, and a side portion adjacent to the second housing is opened. It is formed in a box shape, and the first protrusion protrudes from an end adjacent to the second housing of the side wall portion facing each other of the first housing in a direction toward the second housing,
The second housing has a space formed therein, and a front portion facing the workpiece and a side portion adjacent to the first housing are formed in an open housing shape, and the first and second housings have respective open front portions mutually. It is hinged so that it rotates in the away direction,
The second protrusions protrude in a direction from the mutually facing sidewall of the second housing toward the first housing, but are formed staggered so as not to interfere with the first protrusion. Painting and rust removal device for bridges. According to claim 1,
The painting and rust removal device for bridges, characterized in that the driving unit is an air motor connected to the pneumatic pipe and driving the brush by high-pressure air supplied from the compressor. delete delete According to claim 1,
Painting of the bridge, characterized in that the first and second sealing members are further provided on the side corresponding to the protrusion to prevent the powder sprayed from the sanding unit or the removed rust from being discharged to the outside of the first and second housings and a rust removal device. According to claim 1,
The head unit further comprises at least one grinding roller which is rotationally driven by the driving unit and contacts the surface of the workpiece to remove paint or rust.

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