JP2008229508A - Coating apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coating apparatus capable of accurately forming a coating film having uniform thickness on the circumferential surface of a structural member with a required minimum quantity of a coating material. <P>SOLUTION: The coating apparatus is provided with: an apparatus body 3 fitted on the outer circumferential surface of a tubular or cylindrical structural member 2 and linearly movable on the circumferential surface of the structural member 2 in the axial line direction; and a coating part 17 provided in the apparatus body 3, linearly moving together with the apparatus body 3, rotatably moved in the circumferential direction of the structural member 3 and having a brush 25 for coating the whole periphery of the structural member 3 with the coating material supplied on the circumferential surface of the structural member 3. A diffusion member 30 for diffusing the coating material supplied on the circumferential surface of the structural member 2 in the width direction of the brush 25. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to a coating apparatus, and more particularly, to a coating apparatus applied to apply a coating on a peripheral surface of a columnar or cylindrical structural member such as a steel tower.

  Generally, structures such as steel towers (conductive towers, etc.) constructed by assembling a plurality of structural members such as columnar or cylindrical steel pipes are used in a state exposed to the natural environment. To improve corrosion resistance and prevent rusting. In addition, maintenance is performed to repaint at regular intervals to maintain the predetermined corrosion resistance and prevent rust and the like from occurring.

  Such structures, such as steel towers, are several tens of meters above the ground, so it is necessary to ensure the safety of workers when painting the surface of structural members. A coating device that can be controlled by operation is used, and various coatings are applied to the surface of the structural member while moving the coating device along the structural member.

  As an example of such a coating apparatus, a coating apparatus including an apparatus main body that can move linearly on the circumferential surface of a structural member, and a coating unit that is attached to the apparatus main body and has a brush that can rotate and move in the circumferential direction of the structural member. An apparatus has been proposed (see, for example, Patent Document 1).

The coating device having such a configuration is supplied onto the circumferential surface of the structural member by rotating the brush of the coating portion in the circumferential direction of the structural member while moving the circumferential surface of the structural member linearly in the axial direction. The coating material is applied over the entire circumference of the structural member with a brush, and can be applied with a predetermined thickness over the entire peripheral surface of the structural member.
JP 2005-58953 A

  By the way, in the coating apparatus having the above-described configuration, when coating is applied on the peripheral surface of the structural member by the brush of the coating portion, the structural member is connected from the paint tank attached to the apparatus body via the paint supply pipe. Since the coating material is supplied onto the peripheral surface of the ink and the coating material is applied onto the peripheral surface of the structural member by the rotating brush, the coating material supplied from the coating material supply pipe is concentrated on one portion of the brush. For this reason, the paint cannot be applied using the full width of the brush, and an amount of paint more than necessary must be consumed in order to eliminate coating unevenness, which deteriorates the economy. Further, since the paint supplied on the peripheral surface of the structural member directly hits the rotating brush, the amount of the paint to be scattered increases, the paint is wasted, and the surroundings are stained with the paint by the paint to be scattered. .

  The present invention has been made in view of the above-described conventional problems, and can efficiently form a coating film having a predetermined thickness on the peripheral surface of a structural member with a minimum amount of paint. The present invention provides a coating apparatus that can greatly reduce the amount of paint that scatters when applying paint with a brush, eliminates waste of the paint, and does not contaminate the surroundings with the scattered paint. For the purpose.

The present invention employs the following means in order to solve the above problems.
That is, the invention according to claim 1 is provided on the apparatus main body, which is mounted on the outer peripheral surface of the columnar or cylindrical structural member and can move linearly in the axial direction on the peripheral surface of the structural member. A brush that linearly moves integrally with the apparatus main body and rotates in the circumferential direction of the structural member to apply the coating material supplied on the peripheral surface of the structural member over the entire circumference of the structural member. A coating device including a coating unit having a diffusing member for diffusing paint supplied to a peripheral surface of the structural member in a width direction of the brush.

According to the coating apparatus of the present invention, the coating material supplied to the peripheral surface of the structural member structural member is diffused by the diffusion member and diffused in the width direction of the brush, so that the coating material is concentrated on one portion of the brush. In other words, the paint is supplied over the entire width of the brush. Therefore, since the paint can be applied to the peripheral surface of the structural member using the full width of the brush, the efficiency of the painting operation on the peripheral surface of the structural member can be increased.
In addition, since the paint does not directly hit the rotating brush, the amount of paint scattered can be greatly reduced, and the surroundings are not soiled by the paint scattered.

  The invention according to claim 2 is the coating apparatus according to claim 1, wherein the brush includes a brush portion formed by bundling a plurality of hairs, and a handle portion that supports the brush portion. The diffusing member for diffusing the coating material supplied to the peripheral surface of the structural member in the width direction of the brush portion is provided.

  According to the coating apparatus of the present invention, the paint supplied on the peripheral surface of the structural member is diffused in the width direction of the brush portion by the diffusion member provided in the handle portion of the brush. The paint is not supplied in a concentrated manner at the location, and the paint is supplied over the entire width of the brush portion. Therefore, since the paint can be applied to the peripheral surface of the structural member using the full width of the brush portion, the efficiency of the painting operation on the peripheral surface of the structural member can be increased.

  The invention according to claim 3 is the coating apparatus according to claim 2, wherein the diffusing member has a diffusing portion disposed so as to be opposed to the peripheral surface of the structural member via a minute gap. The coating material supplied on the peripheral surface of the structural member is leveled and diffused in the width direction of the brush portion through the minute gap.

  According to the coating apparatus of the present invention, the paint supplied to the peripheral surface of the structural member is leveled by the diffusing portion of the diffusing member, and the brush is passed through the minute gap between the diffusing portion and the peripheral surface of the structural member. Since it is diffused in the width direction of the part, a uniform amount of paint can be supplied over the entire width direction of the brush part, and a highly accurate coating film with a predetermined thickness can be efficiently formed. Will be able to.

  The invention according to claim 4 is the coating apparatus according to claim 3, wherein the diffusing portion has a leveling surface facing the circumferential surface of the structural member through a minute gap, and rotation of the leveling surface. An extruding surface that rises at a predetermined angle from the front end in the direction, and the fine gap is obtained by leveling on the leveling surface while extruding the coating material supplied on the peripheral surface of the structural member forward in the rotational direction on the extruding surface. It diffuses in the width direction of the brush part through the.

  According to the coating apparatus of the present invention, the coating material supplied onto the peripheral surface of the structural member is extruded forward in the rotational direction by the extrusion surface of the diffusion part, and is also leveled by the leveling surface via a minute gap. It is diffused in the width direction of the brush portion, and a uniform amount of paint is supplied over the entire width of the brush portion, so that a highly accurate coating film having a predetermined thickness can be efficiently formed.

As described above, according to the coating apparatus of the present invention, the coating material supplied to the peripheral surface of the structural member is diffused by the diffusion member and diffused in the width direction of the brush. The paint is not supplied in a concentrated manner at the location, and the paint is supplied over the entire width of the brush. Therefore, since the paint can be applied to the peripheral surface of the structural member using the full width of the brush, the efficiency of the painting operation on the peripheral surface of the structural member can be increased.
Further, since the coating material supplied to the peripheral surface of the structural member does not directly hit the rotating brush, the coating material is not scattered and the coating material is not wasted, or the scattered coating material does not contaminate the surroundings.
Furthermore, the coating material supplied to the peripheral surface of the structural member is leveled by the diffusion portion of the diffusion member, and is diffused in the width direction of the brush portion through a minute gap between the diffusion portion and the peripheral surface of the structural member. Therefore, a uniform amount of paint can be supplied over the entire width direction of the brush portion, and a highly accurate coating film with a predetermined thickness can be efficiently formed.
Furthermore, the coating material supplied onto the peripheral surface of the structural member is pushed forward in the rotation direction by the extrusion surface of the diffusion portion, and is also leveled by the leveling surface and diffused in the width direction of the brush portion through a minute gap. Therefore, a uniform amount of coating material is supplied over the entire width of the brush portion, and a highly accurate coating film with a predetermined thickness can be efficiently formed.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 4 show an embodiment of a coating apparatus according to the present invention. FIG. 1 is a perspective view showing the entire coating apparatus, and FIG. 2 is an explanatory view showing a state in which a frame of the coating apparatus is opened. FIGS. 3 and 3 are explanatory views showing the positional relationship between the brush and the guide of the paint portion of the coating apparatus of FIG. 1, and FIG. 4 is an enlarged view of the brush and guide of FIG.

  That is, as shown in FIG. 1, the coating apparatus 1 is applied when coating the surface of a structural member 2 such as a cylindrical shape or a columnar shape (for example, a steel pipe of a steel tower formed by assembling a plurality of steel pipes). The apparatus main body 3 is detachably attached to the structural member 2, and the coating unit 17 is provided on the apparatus main body 3.

  As shown in FIGS. 1 and 2, the apparatus main body 3 is provided on the frame 4 having an annular shape, and a plurality of supports that support the frame 4 on the peripheral surface of the structural member 2 so as to be linearly movable. A roller 11, a drive source 14 that is mounted on the frame 4 and that rotationally drives a specific support roller 11 among the plurality of support rollers 11, and a control unit 16 that controls the drive of the drive source 14 are provided. .

  The frame 4 is formed by combining two C-shaped frame halves 5 and 8 into an annular shape, and one end of both frame halves 5 and 8 are connected to each other via a hinge 9. The other end portions of both frame halves 5 and 8 are configured to be openable and closable via a hinge 9, and are configured to be detachable on the peripheral surface of the structural member 2. The other half of the frame halves 5 and 8 are configured to be fastened by fastening means 10 such as a belt or a bolt.

  The frame 4 is formed in such a size (inner diameter) that a predetermined gap is formed between the frame 4 and the circumferential surface of the structural member 2 when attached to the circumferential surface of the structural member 2. The support roller 11 is rotatably arranged.

  On the inner periphery of the frame 4, a pair of support rollers 11 is formed as a set, and a set of the support rollers 11 is provided at a plurality of positions in the circumferential direction of the frame 4 at predetermined intervals. The frame 4 is supported on the peripheral surface of the structural member 2 so as to be linearly movable.

  Each pair of support rollers 11 is arranged at a predetermined interval in the axial direction of the frame 4. Each support roller 11 includes a disk-shaped roller body 12, a rotation shaft (not shown) that is rotatably attached to a central portion of the roller body 12 via a bearing (not shown), and a rotation shaft that is rotatable. The guide member 13 is supported by the guide member 13 so that the rotation axis faces a direction orthogonal to the axis of the frame 4 (the axis of the structural member 2), and the roller body 12 protrudes in the center direction of the frame 3. It is attached to the inner periphery of the frame 4 via the guide member 13.

  Each support roller 11 is adjusted in the position in the center direction of the frame 4 by adjusting the mounting position of the guide member 13 with respect to the frame 4, and by adjusting the position in the center direction for each support roller 11, Each support roller 11 can be brought into contact with the peripheral surface of the structural member 2 with substantially the same surface pressure.

  The support roller 11 disposed below one frame half 5 of the plurality of support rollers 11 has an output shaft of a motor 14 whose rotation shaft is a drive source via a transmission member 15 such as a gear or a chain. And is configured to be rotationally driven via the transmission member 15 by driving the motor 14.

  The motor 14 for driving the support roller 11 is configured so that the rotation direction and the rotation speed can be controlled by the control unit 16 mounted on the frame 4, whereby the coating apparatus 1 is moved in a predetermined direction in the axial direction of the structural member 2. Can move forward or backward at speed.

  The coating unit 17 is a rotating unit 18 that is rotatably provided at one end of the frame 4 of the apparatus body 3, a driving roller 19 that rotationally drives the rotating unit 18, and a driving source that rotationally drives the driving roller 19. Provided to a brush (not shown), a brush support unit 20 that is attached to the rotation unit 18 and can be rotated together with the rotation unit 18, a brush 25 that is detachably attached to the brush support unit 20, and the brush 25 The diffusing member 30 is mounted, a paint tank (not shown) that is mounted in the apparatus main body 3 and is filled with a predetermined amount of paint, and paint in the paint tank is placed on the peripheral surface of the structural member 2 (rotation of the brush). And a supply pump (not shown) that pumps the paint from the paint tank to the paint supply pipe 23.

  As shown in FIG. 3, the coating material supply pipe 23 is drawn outward from the apparatus main body 1, and the brush 25 is rotated forward of the brush 25 in the rotation direction with respect to the rotation axis of the brush 25 (the axis of the structural member 2). The coating material is arranged so as to be inclined at a predetermined angle (about 30 degrees), and the coating material is continuously supplied from the discharge port 23a at the tip of the coating material supply pipe 23 onto the peripheral surface of the structural member 2 from the direction of about 30 degrees. The

  A plurality of guide rollers 24 are provided at predetermined intervals in the circumferential direction on the end surface in the axial direction of the frame 4 of the apparatus body 3, and the rotating portion 18 of the coating unit 17 is rotated by the plurality of guide rollers 24. It is supported freely.

  One guide roller 24 arranged below one frame half 5 of the plurality of guide rollers 24 is configured as a drive roller 19, and the peripheral surface of the drive roller 19 is used as the peripheral surface of the rotating unit 18. By the press contact, the rotating unit 18 is driven to rotate following the rotation of the driving roller 19. The drive roller 19 is connected to a motor (not shown) as a drive source via a transmission member (not shown) such as a gear, and the drive roller 19 is rotationally driven via the transmission member by driving the motor. Following the rotation of the roller 19, the rotating part 18 of the coating part 17 is driven to rotate. The motor is configured such that the rotation direction and the rotation speed can be controlled by the control unit 16 mounted on the frame 4 of the apparatus body 3, thereby controlling the rotation direction and the rotation speed of the rotation unit 18 of the coating unit 17. Can do.

  As shown in FIGS. 1 and 2, the brush support portion 20 is attached to the side surface of the rotating portion 18, and has a leg portion 21 whose tip portion projects outward from the outer peripheral surface of the frame 4, and the leg portion 21. It is comprised from the attaching part 22 attached to a front-end | tip part, and the leg part 21 and the attaching part 22 are comprised so that the rotation part 18 may be rotationally driven integrally.

  As shown in FIGS. 3 and 4, the brush 25 includes a handle portion 26 made of wood, metal, and plastic, and a brush portion 27 formed by bundling a plurality of hairs attached to the tip of the handle portion 26. The handle portion 26 is attached to the attachment portion 22 of the brush support portion 20 so that the brush tip 28 of the brush portion 27 contacts the peripheral surface of the structural member 2 with a predetermined surface pressure.

  A diffusion member 30 is attached to the front portion of the brush 25 in the rotational direction, and the paint supplied from the paint supply pipe 23 onto the peripheral surface of the structural member 2 is diffused in the width direction of the brush portion 27 by the diffusion member 30. It is comprised so that.

  The diffusing member 30 includes a support portion 31 having one end attached to the handle portion 26 of the brush 25 and a diffusing portion 35 provided integrally with the other end of the support portion 31. The paint supplied on the peripheral surface of the structural member 2 is diffused in the width direction of the brush portion 27.

  The support portion 31 is made of a band plate 32 formed of metal, plastic, bamboo, or the like, and one end portion thereof is connected to the handle portion 26 of the brush 25 via connection means such as screwing or adhesive. ing.

  Similar to the support portion 31, the diffusion portion 35 is made of a band plate 38 made of metal, plastic, bamboo, or the like, and is integrally connected to the other end portion of the support portion 31. The diffusion part 35 may be formed integrally with the support part 31, or formed separately from the support part 31, and is connected to the other end of the support part 31 by screwing or connecting means such as an adhesive. You may make it do.

  As shown in FIG. 3, the diffusing unit 35 is supported so as to be substantially parallel to the inclination angle of the paint supply pipe 23 and to form a minute gap between the peripheral surface of the structural member 2. The unit 31 is provided integrally.

 As shown in FIG. 4, the diffusing portion 31 is formed by bending a band plate 38 into a substantially L shape, and includes a leveling surface 37 facing the circumferential surface of the structural member 2 through a minute gap, and a leveling surface 37. And an extrusion surface 36 that rises at a predetermined angle from the front end of the rotation surface 37 in the rotation direction.

 By the cooperation of the extrusion surface 36 and the leveling surface 37 of the diffusing portion 31 having such a configuration, the paint supplied on the peripheral surface of the structural member 2 is leveled while being pushed forward in the rotation direction, and is passed through a minute gap. The brush 25 is diffused in the width direction of the brush portion 27 and a uniform amount of paint is supplied over the entire width of the brush portion 27.

  The diffusing member 35 is disposed at a predetermined distance from the brush portion 27 on the front side in the rotation direction of the brush portion 27, the front side in the rotation direction is located on the apparatus main body 3 side, and the base end side is the width of the brush portion 27. The length is set so as to be located at the center of the direction. Further, the height of the diffusion member 35 is high so that the paint supplied on the peripheral surface of the structural member 2 does not get over the diffusion portion 35 and flow out to the back surface side (rear end side in the rotation direction) of the diffusion portion 35. Is set.

  Then, the driving source of the coating unit 17 having the above-described configuration is operated, the rotating unit 18 is driven to rotate, the brush 25 is rotated integrally with the rotating unit 18, and the pump is driven in this state, whereby the paint tank The coating material is supplied from the coating material supply pipe 23 to the portion on the circumferential surface of the structural member 2 on the front side of the brush 25 in the rotation direction.

  In this case, the coating material supplied from the coating material supply pipe 23 onto the peripheral surface of the structural member 2 is the extrusion surface 36 and the leveling surface 37 of the diffusion portion 35 of the diffusion member 30 attached to the front side in the rotation direction of the brush 25. In the direction of rotation while being pushed forward in the rotational direction, diffused in the width direction of the brush portion 27 of the brush 25 through a minute gap, and a substantially uniform amount of paint is supplied over the entire width of the brush portion 27. The paint is applied to the peripheral surface of the structural member 2 using the full width of the brush portion 27.

  Then, the paint application operation by the brush 25 is performed while moving the coating apparatus 1 on the peripheral surface of the structural member 2 in the axial direction, so that the entire peripheral surface of the structural member 2 has a predetermined thickness. The coating film having a predetermined thickness can be formed on the entire peripheral surface of the structural member 2.

  In the coating apparatus 1 according to the present embodiment configured as described above, when coating is performed on the peripheral surface of the structural member 2 by the coating unit 17, the paint is supplied from the paint supply pipe 23 onto the peripheral surface of the structural member 2. The paint to be applied is leveled while being pushed forward in the rotational direction by the cooperation of the extrusion surface 36 and the leveling surface 37 of the diffusing portion 35 of the diffusing member 30 prior to the brush 25, and the brush is brushed through a minute gap. Since it is diffused in the width direction of the portion 27, a substantially uniform amount of paint is continuously supplied over the entire width of the brush portion 27.

  Accordingly, since the paint can be applied onto the peripheral surface of the structural member 2 using the full width of the brush portion 27, coating unevenness does not occur and a uniform thickness of the coating film is formed on the peripheral surface of the structural member 2. Thus, it can be formed efficiently over the entire area.

  Further, since an amount of paint more than necessary is not consumed in order to eliminate coating unevenness, it is possible to form a highly accurate coating film with the minimum necessary amount of paint, and to improve economy. Further, since the paint from the paint supply pipe 23 does not directly hit the brush portion 27 of the brush 25, the amount of paint scattered by the rotation of the brush 25 can be greatly reduced, and the waste of paint due to the scattering is lost. Can be reduced, and the surroundings can be prevented from being soiled by the scattered paint.

  In the above description, the diffusing member 30 is configured by the strips 32 and 38. However, the diffusing member 30 may be configured by processing a plate-shaped member. Further, the shape of the diffusing member 30 is not limited to the above shape, and the paint supplied from the paint supply pipe 23 can be diffused and diffused in the width direction of the brush portion 27 of the brush 25. Any shape can be used.

It is explanatory drawing which showed the whole coating apparatus by this invention, Comprising: It is explanatory drawing which showed the state with which it mounted | wore on the surrounding surface of a structural member. It is explanatory drawing which showed the state with the open frame of the coating device of FIG. It is explanatory drawing which showed the positional relationship of the brush and diffusion member of the coating part of the coating device of FIG. It is an enlarged view of the brush and diffusion member of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Coating apparatus 2 Structural member 3 Apparatus main body 4 Frame 5 One frame half part 6 Attachment part 7 Attachment hole 8 The other frame half part 9 Hinge 10 Fastening means 11 Support roller 12 Roller main body 13 Guide member 14 Drive source (motor)
DESCRIPTION OF SYMBOLS 15 Transmission member 16 Control part 17 Coating part 18 Rotating part 19 Drive roller 20 Brush support part 21 Leg part 22 Attachment part 23 Paint supply pipe 23a Discharge port 24 Guide roller 25 Brush 26 Handle part 27 Brush part 28 Brush tip 30 Diffusion member 31 Support section 32 Band plate 35 Diffusion section 36 Extrusion surface 37 Leveling surface 38 Band plate

Claims (4)

An apparatus main body that is mounted on the outer peripheral surface of a columnar or cylindrical structural member and that can move linearly in the axial direction on the peripheral surface of the structural member, and is linearly moved integrally with the apparatus main body provided in the apparatus main body. And a coating unit having a brush that rotates and moves in the circumferential direction of the structural member to apply the paint supplied on the circumferential surface of the structural member over the entire circumference of the structural member. There,
A coating apparatus, wherein the brush is provided with a diffusing member for diffusing paint supplied to a peripheral surface of the structural member in a width direction of the brush.   The brush comprises a brush portion formed by bundling a plurality of hairs, and a handle portion that supports the brush portion, and paint supplied to the peripheral surface of the structural member on the handle portion in the width direction of the brush portion. The coating apparatus according to claim 1, wherein the diffusion member to be diffused is provided.   The diffusing member has a diffusing portion disposed so as to face the peripheral surface of the structural member through a minute gap, and the coating material supplied onto the peripheral surface of the structural member is leveled by the diffusing portion, The coating apparatus according to claim 2, wherein the coating apparatus diffuses in the width direction of the brush portion through a minute gap.   The diffusion portion includes a leveling surface that faces the circumferential surface of the structural member via a minute gap, and an extrusion surface that rises at a predetermined angle from the front end in the rotation direction of the leveling surface, 4. The paint supplied onto the peripheral surface is leveled on the leveling surface while being pushed forward in the rotation direction by the extrusion surface and diffused in the width direction of the brush portion through the minute gap. The coating device described in 1.

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