KR101456847B1 - System for Painting Tower Pipe Outer Surface - Google Patents

Abstract

The present invention relates to a system for painting the outer surface of pipe and a method for painting. According to an embodiment of the present invention, a system of the present invention includes: a turning roller which mounts a pipe to be rotated in the longitudinal direction; a rotation measurement unit which measures a rotation angle and a rotation velocity of pipe rotated by the turning roller; and a painting unit which moves along the longitudinal direction of the pipe by being formed in the outer side of the pipe, and paints the outer surface of the pipe rotated by the turning roller. The painting unit includes: a child car which has a spray robot for spraying paint to the outer surface of the pipe by being reciprocally moved back and forth in a divided painting section which is divided from the entire painting section of the pipe; and a parent car which includes a control unit for moving the child car and controlling the spray robot by receiving the information on rotation velocity and rotation angle of the pipe measured in the rotation measurement unit.

Description

{System for Painting Tower Pipe Outer Surface}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating system, and more particularly, to a tubular outer circumferential surface coating system for coating an outer circumferential surface of a large tubular body such as a tower of a wind turbine generator.

A wind turbine generator is a generator that generates electricity by using wind. Recently, the use of wind turbine generator is increasing as the environmental problem becomes more important. The above-mentioned wind turbine is supported by a tower having a plurality of tubes connected thereto. The one tube is a large tube having a length of about 20 m and a diameter of 3 to 4 m.

Such a wind turbine generator is installed in an area where the wind is strong, such as the sea, the beach and the mountains. Especially, it is necessary to coat the inner circumferential surface and the outer circumferential surface of the tube constituting the tower in order to prevent corrosion by seawater salinity.

Since the size of the tube is much larger than that of a pipe such as a general pipe, the painting operation generally depends on manual work. As a result, the paint quality is not uniform, and thus it is not efficient.

In order to solve such a problem, in order to automate the painting work of the tubular body, according to the registered trademark 10-1271742, there are provided a first supporting frame 10 and a second supporting frame 10 for rotatably supporting both ends of the divided tubular body P And a spray unit for spraying the tubular body P while moving along the rail 40. The rails 40 are provided on both sides of the divided tubular body along the longitudinal direction of the tubular body, 30 are provided.

The first and second support rods 10 and 20 are provided with a first support roller 12 and a second support roller 22 to rotate and support the tubular body P, A moving carriage 34 moving along the rail 40 is installed on a rail 40 provided on both sides of the tube P and the both ends are coupled to the pair of moving carriages 34 And a frame 32 having a diameter larger than the diameter of the tubular body P is provided so as to surround the tubular body P. A plurality of injection nozzles 36 are provided at regular intervals on the inner periphery of the frame 32 of the frame 32.

The tubular body P is rotated by the first support roller 12 and the second support roller 22 so that the paint is sprayed from the injection nozzle 36 of the injection unit 30, As shown in Fig. Then, the moving cart 34 moves along the rail 40 to paint over the longitudinal direction of the tube P.

However, in the conventional tube coating apparatus, the frame 32 must be formed to have a diameter to surround the outer circumferential surface of the tube P. Since the tube P is very large, the size of the frame 32 is very small There is a problem that the weight of the injection unit 30 increases.

In addition, since the weight of the injection unit 30 is heavy, it is difficult to precisely control the movement of the injection unit 30, and there is a limit to improvement in paint quality.

Further, since the diameter of the frame 32 is fixed, it is not applicable to the painting of the tube P having a diameter larger than that of the frame 32.

In addition, it is common that the tower has a larger diameter toward the lower side and a smaller diameter toward the upper side, so that the diameter of the tube P is also not constant, and a truncated cone is formed so as to become larger or smaller in the longitudinal direction However, since the diameter of the frame 32 is fixed, there is a problem that it is difficult to keep the interval between the injection nozzle 36 and the outer peripheral surface of the tubular body P constant.

In order to keep the distance between the injection nozzle 36 and the pipe P constant in a state where the diameter of the frame 32 is fixed as in the conventional case, the distance that the injection nozzle 36 protrudes toward the pipe P And the gap adjusting device must be provided for each of the plurality of spray nozzles 36, which complicates the installation and raises the manufacturing cost.

Patent No. 10-1271742

SUMMARY OF THE INVENTION It is an object of the present invention to provide a tubular outer circumferential surface coating system capable of improving paint quality more efficiently by controlling the movement of the injection unit relatively light and simple, .

It is another object of the present application to provide a tubular outer circumferential surface coating system that can be applied regardless of the size of the tube diameter.

The problems of the present application are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

According to an embodiment of the present invention, there is provided a turning roller for rotating a tubular body rotatably about its longitudinal axis, a rotating angle and a rotating speed of a tubular body rotated by the turning roller, And a coating unit which is provided on the outside of the tubular body and moves along the longitudinal direction of the tubular body to coat the outer circumferential surface of the tubular body rotated by the turning roller, A sub-tank equipped with a spray robot for spraying paint onto an outer peripheral surface of the tube reciprocating between divisional coating sections obtained by dividing a section, and a rotation speed and rotation angle information of the tube measured by the rotation amount measurement unit, And a controller for controlling the injection robot and the mother carriage.

The parent bock is moved in units of the divisional coating section, and can be stopped when the child barycenter reciprocates between the divisional coating sections.

And a rail for guiding the movement path of the painting unit to a path along which the painting unit moves.

A rack provided along the rail and formed with gear teeth, a pinion provided on the sub-rack and engaged with the rack, and a driving unit provided on the sub-rack and driving the pinion.

A paint ring may be coupled to both ends of the tubular body to support the tubular body against the turning roller.

The rotation amount measuring unit may be attached to the paint ring and wirelessly transmit the measured angle and rotation speed to the control unit.

And a docking unit for coupling the main bogie and the sub-bogie may be further provided.

Wherein the hook is provided at a point where the hook is inserted into the hook of the mother car, the hook is inserted into the hook, and the hook is inserted into the hook, And a lifting portion for lifting the hook inserted into the insertion portion to be spaced apart from the hook.

The tubular body may be a tower or part of a wind turbine generator.

According to another embodiment of the present application, a tubular rotation step in which a turning roller rotates and a tubular body is rotated about its longitudinal direction, a tubular rotating step in which a tubular body is divided into a total coating section, A reciprocating paint spraying step of spraying paint onto the outer circumferential surface of the tubular body rotated while reciprocating, and a step of, after the motherboard has completed painting in the split coating section, moving the motherboard and the sub- A tubular outer circumferential surface coating method including a coating section moving step is disclosed.

According to the tube outer circumferential surface coating system of the present application, the following effects are obtained.

First, the paint unit is divided into the sub-bogie and the bogie, so that the bogie has relatively heavy components, and the sub-bogie that travels through the bogie coating zone has only minimal components, minimizing the mass and minimizing the inertia. So that it is advantageous in accelerating and decelerating, and more precise position control is possible, and the coating quality can be improved.

Secondly, since the paint unit is provided on the side surface of the tube, there is an effect that the present invention can be applied regardless of the diameter of the tube.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

The foregoing summary, as well as the detailed description of the preferred embodiments of the present application set forth below, may be better understood when read in conjunction with the appended drawings. For the purpose of illustrating the invention, there are shown preferred embodiments in the figures. It should be understood, however, that this application is not limited to the precise arrangements and instrumentalities shown.
1 is a perspective view showing a conventional tube coating apparatus;
FIG. 2 is a perspective view illustrating a tube outer circumferential surface coating system according to an embodiment of the present application; FIG.
FIG. 3 is an exploded perspective view showing one end of the tubular body of FIG. 2;
Fig. 4 is a side view of Fig. 2; Fig.
5 is a perspective view showing the sub-bogie of FIG. 2;
FIG. 6 is a perspective view showing a mother car in FIG. 2; FIG.
Fig. 7 is a side view showing the pinion and rack of the sub-rack of Fig. 5; Fig.
8 is a cross-sectional view of the docking portion of the subcarrier and parent wheel of Figs. 5 and 6;
FIG. 9 is a perspective view showing an example of the rotation amount measuring unit of FIG. 2; FIG.
Fig. 10 is a flowchart showing a method of coating a tube outer circumferential surface according to the present application.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. In describing the present embodiment, the same designations and the same reference numerals are used for the same components, and further description thereof will be omitted.

In the following description, the tube body will be described by taking as an example a tube body constituting a tower applied to a wind power generator or the like. However, the present invention is not limited thereto, and any kind of pipe may be applied.

The tubular outer circumferential surface coating system according to this embodiment may include a turning roller 110, a rotation amount measuring unit 120 and a coating unit 130 as shown in FIG.

The turning roller 110 is a component that is provided at both ends of the divided tube P and rotatably supports the tube P in its longitudinal direction.

The turning roller 110 may include a base 112 and a roller 114, as shown in FIG.

The base 112 is a component that supports the roller 114 on the ground, and may be provided so as to be movable relative to the ground.

In addition, a first rail 116 for guiding the movement of the base 112 may be disposed on the ground in parallel with the longitudinal direction of the tube P.

The pair of rollers 114 are spaced a predetermined distance from the base 112 and may support the ends of the tube P in a rotatable manner. The roller 114 may be rotated by a separate motor (not shown).

On the other hand, the portion of the tubular body P which is in contact with the turning roller 110 can not be painted, and an excessive stress acts on the portion of the turning roller 110 in contact with the roller 114, There is a risk of contamination.

A paint ring 180 may be provided to prevent this problem.

A flange 14 is generally formed at the end of the tube P for mutual coupling between the tubular bodies P that form the tower. The paint ring 180 may be coupled to the flange 14.

The paint ring 180 is provided in a ring shape having an outer diameter slightly larger than the outer diameter of the tube body P and is coupled to the flange 14 of the tube body P, (Not shown).

Accordingly, the tubular body P can be exposed to the injection robot 160, which will be described later, without being in contact with the turning roller 110, and can be prevented from being contaminated with soil or the like.

Of course, the paint ring 180 may be applied to the pipe body P where the flange 14 is not formed. In this case, the paint ring 180 may be coupled to the inner peripheral surface of the end portion of the pipe body P or the like.

The paint ring 180 may be provided with a rotation amount measuring unit 120.

The rotation amount measuring unit 120 may measure the rotation angle, the rotation speed, the rotation amount, and the like of the tubular body P rotated by the turning roller 110.

2 and 3, the rotation amount measuring unit 120 may be coupled to the paint ring 180, which is not required to be painted. As shown in FIG. 4, 122, a sensor 124, a switch 126, an antenna 129, and the like.

The case 122 is coupled to the paint ring 180 and the sensor 124 and the switch 126 are embedded therein and the antenna 129 and the like are coupled to each other.

In a painting operation in which a flammable substance such as a diluent is used in a large amount, a small spark may cause fire or explosion. In order to avoid such a risk, the case 122 may be explosion-proof type.

Inside the case 122, a sensor 124 for measuring an inclined angle, a switch 126 for turning on / off the sensor 124, and a battery 128 for supplying power are provided And an antenna 129 for wirelessly transmitting measured values to the outside may be provided so as to protrude to the outside of the case 122. Of course, the switch 126 and the battery pack 128 may be explosion-proof.

The sensor 124 senses in real time how much the current tilt has been tilted in the direction from the point where the tilt is initialized, and wirelessly transmits the measured value through the antenna 129 to the outside.

The coating unit 130 is disposed outside the tubular body P and moves along the longitudinal direction of the tubular body P to coat the outer peripheral surface of the tubular body P rotated by the turning roller 110 Element.

The outer circumferential surface of the tubular body P is divided into the entire coating region (not shown) over the entire longitudinal direction of the tubular body P, (TS), and a section obtained by dividing the entire coating interval (TS) in the longitudinal direction of the pipe (P) is defined as a split coating interval (DS).

For example, if the length of the tube P is 40 m, the total coating interval TS is 40 m, and the total coating interval of 40 m may be divided by 6 m to set the division coating interval DS.

A second rail 170 for guiding the movement of the painting unit 130 along a path along which the painting unit 130 moves may be provided on a side of the side where the tube P is mounted.

The painting unit 130 may include a child carriage 150 and a mother carriage 140 as shown in FIGS. 2 and 5.

The main rail 150 is moved along the second rail 170 and reciprocates between the divided coating sections DS in which the entire coating interval TS of the tubular body P is divided. And a spray robot 160 for spraying the paint on the outer circumferential surface of the spray gun.

The mother car 140 moves along the second rail 170 in units of the divisional coating section DS and when the child car 150 reciprocates between the divisional coating sections DS And may be stopped on the second rail 170.

In order to make the child carriage 150 lighter, the mother carriage 140 is provided with a control unit 144 for controlling the moving and jetting robot 160 of the child carriage 150 and various electrical components, Only a minimum amount of equipment can be mounted on the apparatus 150. Of course, a painting material storage tank 146 for storing the paint sprayed by the jetting robot 160 may be provided if necessary.

Therefore, the weight of the sub-bogie 150 can be minimized, and the inertia can be reduced, so that the acceleration and deceleration or stop of the sub-bogie 150 can be more precisely controlled. Of course, the energy required to move the sub-motor 150 may be reduced.

The control unit 144 wirelessly receives information on the rotation speed and the rotation angle of the tube P measured by the rotation amount measurement unit 120 and determines the movement speed and the movement direction of the sub- Position, and the like, and may control the injection robot 160.

6, the child carriage 150 may include a body 152, a wheel 154, and a jetting robot 160.

A wheel 154 may be provided on the lower side of the body 152 so as to roll along the second rail 170 described above. An injection robot 160 for spraying paint onto the outer circumferential surface of the tube P may be provided on the body 152.

7, a rack 159 and a pinion 158 may be provided to precisely control the transfer of the sub-rack 150. [

The rack 159 is provided along the second rail 170 separately from the second rail 170, and gear teeth may be formed on the upper surface or the side surface of the second rail 170. Of course, the rack 159 may be formed with a gear tooth on a part of the second rail 170. The rack 159 may be detachably attached to the second rail 170. At this time, the rack 159 may be formed to have a length corresponding to the length of the divided coating region.

The pinion 158 is provided at a lower portion of the body of the sub-racket 150 so as to engage with the rack 159 and a motor 152 for driving the pinion 158 is mounted on the body 152 of the sub- (Not shown) may be provided.

As shown in FIG. 8, the mother car 140 is provided with a rotatable wheel 142 along the second rail 170 on the lower side. A motor (not shown) driving the wheel 142 And the like. Of course, the parent carriage 140 may be moved by driving the pinion (not shown) separately from a pinion (not shown) coupled to the rack 159, similar to the child carriage described above.

As described above, in the mother car 140, measured values such as the rotation angle and the rotation speed of the pipe body P measured by the rotation amount measurement unit 120 are received in the mother car 150, A controller 144 for controlling the driving unit 156 and the injection robot 160 may be provided.

In addition, a paint storage tank 146 for storing the paint sprayed by the jetting robot 160 may be provided.

Meanwhile, when the child carriage 150 reciprocates between the divided coating regions DS, the child carriage 150 moves in a state where the child carriage 150 and the mother carriage 140 are separated from each other, After completion of painting of the painting zone DS, the mother car 140 and the child car 150 can move to the next divisional painting zone DS. Then, after moving to the next divisional coating region DS, the mother car 140 is moved to the outer peripheral surface of the tube P while the sub-vehicle 150 reciprocates in the divided spraying region DS in a fixed state, Can be performed.

The docking unit 190 may further include a docking unit 190 for coupling the main rail 140 and the sub-rail 150.

The docking unit 190 may include a hook 192, an insertion unit 194, and a lifting unit 196, as shown in FIGS. 6 and 8 to 9.

The hook 192 may protrude from a surface of the mother car 140 coupled to the sub-truck 150.

An insertion portion 194 for receiving the hook 192 may be formed in a groove-like shape on a surface of the child carriage 150 coupled with the mother carriage 140.

The elevating portion 196 is provided on the mother car 140 and is provided to raise and lower the hook 192.

When the mother carriage 140 and the child carriage 150 are engaged with each other, the hook 192 of the mother carriage 140 is inserted into the insertion portion 194 of the child carriage 150, The hooks 192 inserted in the inserting portion 194 are raised so that the wheels 154 or the pinions 158 of the sub-rails 150 are separated from the second rails 170 or the racks 159 Thereby raising the child carriage 150.

When the mother trailer 140 and the child carriage 150 are first seated on the second rail 170 and the lag 159 of the entire painting interval TS, The pinion 158 is prevented from being caught by the rack 159 through the docking portion 190 because the impact may be generated when the pinion 158 and the rack 159 to be engaged with each other are not aligned with each other, After the mother car 140 is first mounted on the second rail 170 after the mother car 150 is slowly lowered from the pinion 158 to the mother car 150, The rack 159 can be prevented from being impacted when engaged.

Of course, in a state where the mother car 140 and the child car 150 are coupled by the docking part 190, the mother car 150 is lifted by the lifting of the child car 150, It is also easy to move.

Hereinafter, a method of painting the outer circumferential surface of the tube according to another embodiment of the present application will be described.

As shown in FIG. 10, the method of coating the outer circumferential surface of the tube according to the present embodiment may include a tubular rotation step (S110), a reciprocating paint spraying step (S120), and a coating section moving step (S130).

The tubular rotation step S110 is a step in which the tubular body P is rotated about its longitudinal direction by the turning roller 110 rotating.

The reciprocating paint spraying step S120 is performed such that the mother car 150 reciprocates in the divided paint interval DS of the tube P while the mother car 140 is stopped, And spraying the paint onto the outer circumferential surface of the tubular body P which is rotated.

The coating section moving step S130 is a step of moving the mother carriage 140 and the child carriage 150 to the next divisional coating section DS after completing the painting in the divisional painting interval DS, ). At this time, the mother carriage 140 and the child carriage 150 can be individually driven to move to the next divisional coating section (DS).

After the mother car 140 coupled with the child car 150 has transferred the child car 150 to the next divisional coating section DS, the mother car 140 and the child car 150 are separated from each other, The reciprocating paint spraying step (S120) is performed in which the paint film (150) reciprocates in the divided paint section (DS).

The reciprocating paint spraying step S120 and the painting zone moving step S130 may be repeatedly performed until the coating of the entire coating area TS of the tube P is completed.

It will be apparent to those skilled in the art that the present invention can be embodied in other specific forms without departing from the spirit or scope of the invention as defined in the appended claims. It is obvious to them. Therefore, the above-described embodiments are to be considered as illustrative rather than restrictive, and the present invention is not limited to the above description, but may be modified within the scope of the appended claims and equivalents thereof.

P: Tube 14: Flange
110: turning roller 112: base
114: roller 116: first rail
120: Rotation amount measuring unit 122: Case
124: sensor 126: switch
128: Battery 129: Antenna
130: paint unit 140:
142: wheel 144:
146: paint tank 150:
152: body 154: wheel
156: driving part 158: pinion
159: Rack 160: injection robot
170: second rail 180: paint ring
190: docking portion 192: hook
194: inserting portion 196: elevating portion

Claims (10)

A turning roller for rotatably supporting the tubular body about its longitudinal direction;
A rotation amount measuring unit for measuring a rotation angle and a rotation speed of the tubular body rotated by the turning roller;
And a coating unit provided on the outer side of the tubular body to move along the longitudinal direction of the tubular body and to coat the outer circumferential surface of the tubular body rotated by the turning roller,
Wherein the coating unit comprises:
A subcarriage provided with a jetting robot which reciprocates between divisional coating sections obtained by dividing the entire coating section of the tube body and spraying paint on the outer peripheral surface of the tube body;
And a control unit that receives the rotation speed and rotation angle information of the tubular body measured by the rotation amount measuring unit and controls the transfer robot and the injection robot of the robot. The method according to claim 1,
Wherein the parent vehicle comprises:
Wherein the partitioning coating section is moved in units of the divisional coating section and is stopped when the sub-balancing section reciprocates within the divisional coating section. The method according to claim 1,
And a rail for guiding a path of movement of the painting unit to a path along which the painting unit moves. 4. The apparatus according to claim 3,
A pinion which is provided along the rail and is provided on the sub-rack of the rack having the gear teeth formed therein, the pinion being engaged with the rack;
And a driving unit provided on the subcarrier and driving the pinion. The method according to claim 1,
And a paint ring for supporting the tubular body with respect to the turning roller is coupled to both ends of the tubular body. 6. The method of claim 5,
The rotation amount measuring unit includes:
Wherein the paint ring is attached to the outer periphery of the tube, and the measured angle and the rotation speed are wirelessly transmitted to the control unit. 5. The method of claim 4,
Further comprising a docking portion for coupling the mother carriage and the child carriage to each other. 8. The method of claim 7,
The docking unit includes:
A hook provided at a position coupled with a child carriage of the parent vehicle;
An inserter provided on the subcarrier, the inserter being formed to insert the hook;
And a lifting portion for lifting a hook inserted into the insertion portion such that a subcarrier in a state where the hook is inserted into the insertion portion is spaced from the rail. 9. The method according to any one of claims 1 to 8,
Wherein the tube is a tower or part of a wind turbine generator. A tubular rotating step in which the tubular body is rotated about its longitudinal direction by the turning roller rotating;
A reciprocating paint spraying step of spraying paint onto an outer circumferential surface of a tubular body rotated while reciprocating a subcarrier separated from a parent carriage within a divided coating region divided by the entire coating region of the tubular body;
And a coating section moving step in which the motherboard and the sub-drum move in units of a next divided coating section of the tubular body after the sub-drum completes painting in the divided coating section.

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