KR20130025472A - Blade maintenance device for wind turbine - Google Patents

Abstract

PURPOSE: A blade maintenance device for a wind turbine is provided to manage a blade while stably driving along the blade by installing robot arms in both sides of a body. CONSTITUTION: A blade maintenance device for a wind turbine comprises a body(21), one or more maintenance units, and one or more robot arms(30). The body drives along a leading edge(13a) of a blade(13). The maintenance units are mounted on the body to do the maintenance of the exterior of the blade. The robot arms are installed in both sides of the body to support the side of the blade.

Description

Blade Maintenance for Wind Turbines {BLADE MAINTENANCE DEVICE FOR WIND TURBINE}

The present invention relates to a blade maintenance device for a wind turbine, and more particularly, blade maintenance for a wind turbine capable of performing maintenance such as cleaning, inspection, deicing, etc. of the blade while traveling along the blade outer surface. Relates to a device.

Wind turbine is a device that converts wind energy into mechanical energy to produce electricity. It is attracting attention as a clean energy source for greenhouse gas reduction. A typical wind turbine has a tower, a nacelle mounted on top of the tower, and a rotor connected to the nacelle and having a plurality of blades.

Wind turbines require periodic maintenance such as cleaning, inspection, and deicing (deicing of ice formed on blades, etc.) even after installation to prevent breakdowns and accidents and to increase operational efficiency. However, wind turbines are difficult to maintain because they are large structures with tower heights of approximately 100 meters and blade lengths of 40 to 70 meters or more. In particular, because the blade is located at high altitude, the work environment is poor and dangerous, for example, the operator must be suspended in the air for maintenance.

Since the maintenance conditions of the blades are so poor, in recent years, devices have been proposed that allow the operator to perform maintenance without direct access to the blades.

Japanese Laid-Open Patent Publication No. 2002-115646 proposes a cleaning device that performs cleaning of the leading edge while moving itself along the leading edge of the blade. The device includes a brush moving along the leading edge of the blade, and a drive mechanism installed inside the blade for moving the brush and including a motor, a gear, a wheel, and the like.

However, this device has a problem in that the drive mechanism must be installed inside the blade to provide a moving space of the drive mechanism in the blade. In addition, in order to connect the drive mechanism inside the blade and the brush outside the leading edge, a slit must be formed at the blade leading edge, thereby deteriorating the blade rigidity. There is a problem that the cleaning area is also limited to the leading edge of the blade. In addition, it is difficult to remove the ice formed on the blade leading edge only with such a cleaning device.

U.S. Patent Application Publication No. 2010/0132137 proposes an apparatus that can inspect and clean the blade while traveling along the outer edge of the leading edge of the blade. The device includes a traveling body having a plurality of wheels for driving the leading edge, a drive unit for rotating the wheel, a device for cleaning and inspection, and extended downwards on both sides of the traveling body to maintain a balance along the leading edge. It has wings.

However, this device has a problem that the traveling body is difficult to stably travel along the blade leading edge because the wing portion is to be balanced by only extending to both sides of the traveling body. Strong winds can cause the device to fall. There is also a drawback that the cleaning and inspection areas are limited to the leading edge of the blade.

Patent Document 1: Japanese Unexamined Patent Publication No. 2002-115646 (published Apr. 19, 2002) Patent Document 2: US Patent Application Publication No. 2010/0132137 (published Jun. 03, 2010)

An object of the present invention is to provide a blade maintenance apparatus for a wind turbine that can perform the maintenance of the blade while running stably along the blade.

Another object of the present invention is to provide a blade maintenance apparatus for a wind turbine capable of performing maintenance on most areas of the outer surface of the blade.

According to an aspect of the present invention, the main body running along the leading edge of the blade, one or more maintenance units mounted on the main body for maintenance of the blade outer surface, respectively installed on both sides of the main body to the side of the blade A blade maintenance apparatus for a wind turbine including a supporting robot arm for supporting may be provided.

The main body includes a plurality of wheels provided in contact with the blade leading edge, a drive motor for driving at least one of the plurality of wheels, a control unit for operation control of the drive motor and the maintenance unit, and a power supply. It may include a battery unit.

The support robot arm may include a roller installed at an end portion thereof so as to make a rolling motion in contact with an outer surface of the blade.

The support robot arm may further include a shoulder coupled to the side of the main body, and a plurality of arms connected to each other rotatably through a plurality of rotation joints.

The supporting robot arm may further include a sensor for detecting a separation distance between the distal end portion and the side surface of the blade.

The maintenance unit includes a cleaning brush installed to rotate below the main body for cleaning the blade leading edge portion, a motor installed in the main body to drive the cleaning brush, a cleaning liquid tank installed in the main body, and the cleaning liquid tank. It may include a cleaning solution supply device for supplying a cleaning solution of the cleaning brush.

The maintenance unit surrounds the inlet of the cleaning liquid supply passage to guide the cleaning liquid to the cleaning liquid supply passage provided on the rotating shaft to which the cleaning brush is coupled to supply the cleaning liquid to the center of the cleaning brush. The cleaning liquid guide member provided on the outer surface of the rotating shaft and the cleaning liquid supply pipe for guiding the cleaning liquid of the cleaning liquid tank to the cleaning liquid guide member.

The maintenance unit includes a deicing device for removing ice from the blade leading edge, and the deicing device is provided in the main body, and an air flow passage toward the blade leading edge and an outlet of the blade leading edge, It may include a blowing fan installed in the blowing passage to blow air to the outlet, a motor for driving the blowing fan, and a heater installed in the blowing passage to heat the air in the blowing passage.

The maintenance unit may include a cleaning robot arm installed on both sides of the main body, and a cleaning brush installed at an end portion of the cleaning robot arm.

The cleaning robot arm may further include a shoulder coupled to a side of the main body, and a plurality of arms rotatably connected to each other through a plurality of rotation joints.

The cleaning robot arm may further include a sensor for detecting a separation distance between an end portion of the cleaning arm and the side of the blade. The maintenance device includes a motor installed in the cleaning robot arm for driving the cleaning brush, and the main body. And a cleaning liquid supplying device configured to supply the cleaning liquid tank installed in the cleaning liquid tank and the cleaning liquid of the cleaning liquid tank to the cleaning brush.

The maintenance unit is an inspection robot arm which is installed on both sides of the main body, and the inspection unit which is installed at the distal end of the inspection robot arm for defect inspection of the blade side and implemented by at least one of the camera and the ultrasonic inspection device It may include.

The inspection robot arm may further include a shoulder coupled to the side of the main body, and a plurality of arms rotatably connected to each other through a plurality of rotation joints.

The maintenance unit may include an inspection unit installed on the main body for defect inspection of the blade leading edge and implemented by at least one of a camera and an ultrasonic inspection apparatus.

The main body may include a first sensor for detecting a position of the free end of the blade, and a second sensor for detecting a position of the hub side end of the blade.

Blade maintenance apparatus for a wind turbine according to an embodiment of the present invention is installed on both sides of the main body running along the leading edge of the blade is provided with a support robot arm for supporting the side of the blade to run stably along the blade It is possible to perform blade maintenance.

Blade maintenance device for a wind turbine according to an embodiment of the present invention because the cleaning device for cleaning the leading edge of the blade, and the cleaning device for cleaning the blade side while moving by the cleaning robot arm to clean the entire blade outer surface It can be done easily.

Blade maintenance apparatus for a wind turbine according to an embodiment of the present invention can easily remove the ice formed on the leading edge because the deicing device can supply hot air to the leading edge while driving along the leading edge of the blade.

Blade maintenance apparatus for a wind turbine according to an embodiment of the present invention is a defect inspection device installed in the main body while the main body is driving the defect inspection device for inspecting the defects of the blade leading edge portion, and moves up and down by the inspection robot arm Can inspect defects on both sides of the blade, making it easy to inspect the entire blade area.

1 is a front view of a wind turbine in a state where a blade maintenance apparatus according to an embodiment of the present invention is mounted.
Figure 2 is a perspective view of the blade maintenance apparatus according to an embodiment of the present invention, showing a state mounted on the wind turbine blade.
3 is a cross-sectional view of the blade maintenance apparatus main body according to an embodiment of the present invention.
4 is a front view of the blade maintenance apparatus according to an embodiment of the present invention.
5 is a cross-sectional view of main parts of the second cleaning device of the blade maintenance apparatus according to the embodiment of the present invention.
6 is a cross-sectional view of the main portion of the first cleaning device of the blade maintenance apparatus according to the embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a front view of a wind turbine for converting wind energy into electrical energy. The wind turbine 10 includes a tower 11, a nacelle 12 installed on the top of the tower 11, and a plurality of blades 13 installed on the nacelle 12. The plurality of blades 13 are radially installed on the hub 14 installed to rotate on the nacelle 12. The blade 13 rotates by the wind to rotate the hub 14, the hub 14 rotates a generator (not shown) installed inside the nacelle 12 to generate electricity.

When the wind turbine 10 operates, the surface of the blade 13 may be contaminated by attaching foreign matter such as dust or insects. In winter, freezing may occur at the leading edges of the blades 13a. In addition, cracks or scratches may occur on the surface of the blade 13 during use. Foreign matter or ice on the surface of the blade 13 causes the efficiency of the wind turbine 10 to deteriorate, and defects on the surface of the blade 13 may cause damage to the blade 13 when left unattended. Therefore, the blade 13 needs to remove foreign substances on the surface or inspect defects through periodic management.

As shown in FIG. 1, the blade maintenance apparatus 20 according to the present embodiment travels along the blade 13 by itself while being mounted on the outer surface of the blade 13. It is a device that performs maintenance such as deicing. When performing the maintenance of the blade 13, the blade 13 is maintained approximately horizontal as in the example of FIG. 1, the pitch of the blade 13 is adjusted so that the blade leading edge 13a faces upwards, and then the blade ( 13) Mount the blade maintenance device 20 on.

2 and 3, the blade maintenance device 20 is installed on the main body 21 for traveling along the blade leading edge 13a and the main body 21 for maintenance of the blade 13. Is provided with one or more maintenance units, and the support robot arm 30 installed on each side of the main body 21 to support the main body 21 to implement a stable running.

As shown in FIG. 3, a plurality of wheels 25 and 26 are installed below the main body 21 so that the main body 21 can travel along the blade leading edge 13a. A drive motor 27 for driving one of these wheels 25 and 26 is provided. The driving motor 27 and the wheel 25 may be connected to transmit the rotational force by the connecting means 28 such as a belt or a chain. In the present exemplary embodiment, one wheel 25 and the driving motor 27 of the plurality of wheels 25 and 26 are connected to each other, but the driving motor may be connected to each of the plurality of wheels 25 and 26.

Each wheel 25 and 26 may be made of a material having high frictional force such as rubber so as not to slip from the blade leading edge 13a. The drive motor 27 may be adopted to enable forward rotation and reverse rotation so as to implement forward and backward of the main body 21. In this embodiment, the driving motor 27 and the plurality of wheels 25 and 26 are employed as a means for driving the main body 21. However, this is an endless track type driving installed in the lower part of the main body 21. It may be replaced by means. The first sensor 23 for detecting the position of the free end of the blade 13 is installed in the front of the main body 21, the second sensor for detecting the position of the hub end of the blade 13 in the rear of the main body 21 Sensor 24 may be installed. When the main body 21 travels along the blade leading edge 13a, the sensors 23 and 24 may recognize the positions of both ends of the blade 13.

As shown in Fig. 2 and 4, the support robot arm 30 for supporting the main body 21 has a shoulder portion 31 coupled to the side of the main body 21, a plurality of rotary joints 33 It includes a plurality of arms 32 rotatably connected to each other through, and a roller 34 installed at its distal end to make a rolling motion in contact with the outer surface of the blade (13). Although not shown in the drawings, the shoulder part 31 and the arm part 32 or the rotational joint part 33 connecting each arm part may be provided with a driving means such as a servo motor for rotational motion as in a conventional robot arm.

The support robot arm 30 is supported by the roller 34 installed at the distal end of the main body 21 so as to make a rolling motion in contact with the side surface of the blade 13 so as to support the main body 21 to support the main body 21. To ensure stable running of 21). In addition, since the support robot arm 30 is free to move, the position of the roller 34 can be easily changed, so even when the thickness of the blade 13 changes in the process of running, the roller 34 is always the blade 13. It can be kept in contact with the outer surface of the. For this operation, the supporting robot arm 30 may be provided with a sensor 35 for detecting a separation distance between the distal end portion and the side surface of the blade 13. This is to control the operation of the support robot arm 30 through the detection of the sensor 35.

In addition, the blade maintenance apparatus 20 of the present embodiment includes various types of maintenance units for maintenance of the blade 13. As shown in FIG. 2, the maintenance unit includes a first cleaning device 50 for cleaning the blade leading edge 13a, a second cleaning device 60 for cleaning both sides of the blade 13, and a blade ( The first defect inspection apparatus 80, the second defect inspection apparatus 130, and the deicing apparatus 100 for removing ice formed on the blade leading edge 13a may be included.

In addition, the blade maintenance device 20 is a control unit 110 installed in the main body 21 for driving and operation control of the blade maintenance device 20, and installed in the main body 21 to supply power for operation It includes a battery unit 120. Although not shown in the drawing, the main body 21 has a wireless communication unit capable of communicating with the remote control system so as to remotely control the blade maintenance apparatus 20 and an operation unit for directly inputting operation information of the device by the user. Can be prepared.

3 and 6, the first cleaning device 50, the main body 21 to drive the first cleaning brush 51, the first cleaning brush 51 installed so as to rotate below the main body 21; Cleaning liquid installed in the cleaning liquid tank 53 for supplying the cleaning liquid of the motor 52, the cleaning liquid tank 53 installed on the upper part of the main body 21, and the cleaning liquid tank 53 to the first cleaning brush 51, And a feeder 54.

As shown in FIG. 6, the cleaning liquid supply passage 56 for supplying the cleaning liquid to the center of the first cleaning brush 51 is provided on the rotation shaft 55 of the motor 52 to which the first cleaning brush 51 is coupled. Is formed. In addition, a ring-shaped cleaning liquid guide member 57 surrounding the inlet of the cleaning liquid supply passage 56 is installed on the outer surface of the rotating shaft 55 inside the main body 21 to guide the cleaning liquid to the rotating cleaning liquid supply passage 56. . The cleaning solution supply member 57 is connected to the cleaning solution supply pipe 58 connected to the cleaning solution tank 53. The cleaning liquid supply device 54 inside the cleaning liquid tank 53 may be constituted by a general fluid pressure pump.

The first cleaning device 50 cleans the blade leading edge 13a by supplying a cleaning liquid to the center of the first cleaning brush 51 while the first cleaning brush 51 is rotated by the operation of the motor 52. can do. Of course, such an operation may be performed while the main body 21 travels along the blade 13, so that cleaning may be performed over the entire blade leading edge 13a.

As shown in FIGS. 2 and 5, the second cleaning device 60 includes a cleaning robot arm 70 provided at both sides of the main body 21 and a second cleaning brush provided at the ends of the cleaning robot arm 70. A cleaning liquid tank (70) for supplying the cleaning liquid of the cleaning liquid tank 53 and the motor 62 installed in the robot arm 70 to drive the second cleaning brush 61 to the second cleaning brush 61; 53) a cleaning liquid supply device (64) installed therein.

Cleaning robot arm 70 may include a shoulder 71, a plurality of arms 72, a plurality of rotary joints 73, similar to the support robot arm 30, the end and the blade for motion control (13) It may be provided with a sensor 74 for detecting the separation distance between the sides. The second cleaning device 60 is a type in which the cleaning liquid tank 53 is shared with the first cleaning device 50, but the cleaning liquid tank is provided separately for the first cleaning device 50 and the second cleaning device 60, respectively. May be

In addition, as shown in FIG. 5, the second cleaning device 60 includes a cleaning solution supply flow path 66 provided on the rotating shaft 65 and a cleaning solution guide member provided outside the rotating shaft 65 as in the first cleaning device 50. 67, a cleaning liquid supply pipe 68 for connecting the cleaning liquid tank 53 and the cleaning liquid guide member 67, the cleaning liquid of the cleaning liquid tank 53 can be supplied to the center of the second cleaning brush (61). As shown in FIG. 2, the cleaning solution supply pipe 68 extends from the cleaning solution tank 53 and then branches to the cleaning robot arms 70 on both sides, and each cleaning solution supply pipe 68 is connected to the cleaning solution guide member 67. do.

The second cleaning device 60 may move to the upper or lower side of the blade 13 in a state in which the second cleaning brush 61 is in contact with the side surface of the blade 13 by the operation of the cleaning robot arm 70. At the same time, the second cleaning brush 61 is rotated by the motor 62, and the cleaning liquid is supplied to the second cleaning brush 61, thereby cleaning the side surface of the blade 13. In addition, since the cleaning operation is performed together with the operation of the main body 21 running in the longitudinal direction of the blade 13, the cleaning can be performed over the entire blade 13 side. When the first cleaning device 50 and the second cleaning device 60 are operated together while the main body 21 is running, cleaning of the entire outer surface of the blade 13 may be performed.

Although the second cleaning brush 61 of the second cleaning device 60 is rotated by the operation of the motor 62 and the cleaning liquid is supplied to the second cleaning brush 61, the second cleaning device ( 60 may be a method of implementing the cleaning by an operation of moving the cleaning robot arm 70 up and down while the second cleaning brush 61 is fixed to the end of the cleaning robot arm 70. That is, the cleaning robot arm 70 may operate in such a way that the second cleaning brush 61 does not rotate but moves as if it is brushed.

As shown in FIGS. 2 and 4, the first defect inspection apparatus 80 is provided for inspection of defects on the sides of the robot arm 90 and the blades 13 for inspection, which are respectively installed on both sides of the main body 21. It may include a camera 81 installed on the distal end of the inspection robot arm 90.

The inspection robot arm 90 may be provided in substantially the same form as the aforementioned support robot arm 30 or the cleaning robot arm 70. In addition, the camera 81 may inspect the defect of the surface of the blade 13 by acquiring and transmitting an image of the surface of the blade 13. That is, the captured image may be transmitted to the remote control system through the wireless communication unit of the main body 21, and the remote control system may detect the blade defect through the analysis of the transmitted image information.

The first defect inspection apparatus 80 moves up and down in a state in which the camera 81 is spaced apart from the side of the blade 13 by the operation of the inspection robot arm 90 and inspects the defect of the side of the blade 13. have. In addition, since this operation is performed together with the driving operation of the main body 21, the entire inspection of the side surface of the blade 13 may be performed.

On the other hand, in the present embodiment, the first defect inspection apparatus 80 is a form in which the camera 81 is installed at the distal end of the inspection robot arm 90, but not limited to the distal end of the inspection robot arm 90 Instead of the camera 81, an ultrasonic inspection apparatus may be installed to inspect defects on the surface of the blade 13. That is, the first defect inspection apparatus 80 may include an inspection unit implemented by at least one of the camera 81 and the ultrasonic inspection apparatus.

As shown in FIG. 2, the second defect inspection apparatus 130 may be installed at the lower portion of the main body 21 to inspect the defect of the blade leading edge 13a. Like the first defect inspection apparatus 80, the second defect inspection apparatus 130 may include an inspection unit that is implemented by at least one of a camera and an ultrasonic inspection apparatus. The second defect inspection apparatus 130 may inspect the defect of the blade leading edge 13a when the main body 21 travels. As such, the present exemplary embodiment may inspect the defects on both sides of the blade 13 through the first defect inspection apparatus 80, and inspect the defects in the blade leading edge 13a through the second defect inspection apparatus 130. As a result, defect inspection can be performed on the entire outer surface of the blade 13.

As shown in FIG. 2, the deicing apparatus 100 for removing ice formed on the blade leading edge 13a is provided in the main body 21, and the air flow passages having the outlet 102 facing the blade leading edge 13a ( 101, a blowing fan 104 installed in the blowing passage 101 to blow air to the outlet 102 of the blowing passage 101, a motor 105 for driving the blowing fan 104, and a blowing passage ( And a heater 106 installed in the blowing passage 101 to heat the air of the 101. The inlet 103 of the air flow passage 101 may be provided on the upper surface or the front surface of the main body 21.

In the deicing apparatus 100, the blowing fan 104 is operated by the operation of the motor 105 to blow air through the blowing passage 101. That is, the air flowing into the inlet 103 of the air flow passage 101 is discharged toward the blade leading edge 13a through the air flow passage 101. At this time, since the heater 106 inside the blowing flow path 101 operates to heat the discharged air, hot air is discharged through the blowing flow path outlet 102. Therefore, the ice formed on the blade leading edge 13a can be removed by melting with hot air.

 Next, the operation and usage of the blade maintenance apparatus 20 will be described.

 When the blade maintenance device 20 is mounted on the blade 13 of the wind turbine 10, the support robot arm 30 is operated to allow the support robot arm 30 to open to both sides. ) May be placed on the blade 13. After raising the main body 21, the support robot arm 30 is operated again so that the support robot arm 30 is supported on both sides of the blade 13. This operation can be directly controlled by the operator while mounting the blade maintenance device 20 on the blade 13 or via a remote control means. In addition, such a blade maintenance device 20 may be mounted by the operator directly to the blade 13, or mounted using a separate mounting device such as a hoist or a crane.

After mounting the blade maintenance device 20 on the blade 13, the blade maintenance device in such a way that the operator commands the operation directly through the control unit of the blade maintenance device 20 or control the operation through the remote control means 20 can be operated. In this case, the cleaning operation, the inspection operation, and the deicing operation may be simultaneously performed or one or more operations may be selected and performed.

When cleaning the blade, while the main body 21 travels along the blade leading edge 13a, the first cleaning device 50 and the second cleaning device 60 operate. The blade leading edge 13a may be cleaned by the operation of the first cleaning device 50, and both sides of the blade 13 may be cleaned by the operation of the second cleaning device 60. In this case, the first cleaning device 50 moves together with the main body 21 to perform cleaning of the blade leading edge 13a, and the second cleaning device 60 moves up and down by the cleaning robot arm 70. At the same time, the cleaning is performed while moving in the longitudinal direction of the blade 13 together with the main body 21, so that the cleaning of the entire outer surface of the blade 13 can be performed. In this case, since the roller 34 installed on the support robot arm 70 maintains a state in contact with the side of the blade 13, the blade maintenance device 20 may stably travel along the blade 13.

The blade inspection operation can be performed in parallel with the cleaning operation or separately. The inspection operation is performed while the main body 21 travels along the blade leading edge 13a, while the first defect inspection apparatus 80 moves up and down by the operation of the inspection robot arm 90, both sides of the blade 13. Side flaws can be inspected. In addition, the second defect inspection apparatus 130 may inspect the defect of the blade leading edge 13a. Accordingly, when the first defect inspection apparatus 80 and the second defect inspection apparatus 130 operate together, defects may be inspected on the entire outer surface of the blade 13.

The deicing operation may be performed together with the cleaning operation and the inspection operation or may be performed separately. In the deicing operation, while the main body 21 travels along the blade leading edge 13a, the deicing apparatus 100 operates to blow hot air to the blade leading edge 13a. Therefore, the ice formed on the blade leading edge 13a may be sequentially melted and removed as the main body 21 slowly runs.

13: blade, 20: blade maintenance,
21: body, 25, 26: wheel,
27: drive motor, 30: support robot arm,
34: roller, 50 first cleaning device,
60: second cleaning device, 70: cleaning robot arm,
80: first defect inspection device, 90: inspection robot arm,
100: deicing device, 110: control unit,
120: battery unit, 130: second defect inspection device.

Claims (17)

Main body running along the leading edge of the blade,
At least one maintenance unit mounted to the main body for maintenance of the blade outer surface;
Blade maintenance device for a wind turbine, each of which is installed on both sides of the main body including a support robot arm for supporting the side of the blade. The method of claim 1,
The main body includes a plurality of wheels provided in contact with the blade leading edge, a drive motor for driving at least one of the plurality of wheels, a control unit for operation control of the drive motor and the maintenance unit, and a power supply. Blade maintenance device for a wind turbine including a battery unit. The method of claim 1,
The support robot arm blade maintenance device for a wind turbine comprising a roller installed at its distal end to make a rolling motion in contact with the outer surface of the blade. The method of claim 3,
The support robot arm further comprises a shoulder coupled to the side of the main body, and a plurality of arm parts rotatably connected to each other through a plurality of rotary joints. The method of claim 3,
The support robot arm blade maintenance device for a wind turbine further comprises a sensor for sensing the separation distance between the distal end and the blade side. The method according to any one of claims 1 to 5,
The maintenance unit includes a cleaning brush installed to rotate below the main body for cleaning the blade leading edge portion, a motor installed in the main body to drive the cleaning brush, a cleaning liquid tank installed in the main body, and the cleaning liquid tank. Blade maintenance device for a wind turbine comprising a cleaning solution supply device for supplying a cleaning solution of the cleaning brush. The method according to claim 6,
The maintenance unit surrounds the inlet of the cleaning liquid supply passage to guide the cleaning liquid to the cleaning liquid supply passage provided on the rotating shaft to which the cleaning brush is coupled to supply the cleaning liquid to the center of the cleaning brush. The blade maintenance apparatus for a wind turbine further comprising a washing | cleaning liquid guide member provided in the outer surface of the said rotating shaft in the form, and a washing | cleaning liquid supply pipe which guides the washing | cleaning liquid of the said washing | cleaning liquid tank to the said washing | cleaning liquid guide member. The method according to any one of claims 1 to 5,
The maintenance unit includes a deicing device for ice removal of the blade leading edge,
The deicing device is provided in the main body and the outlet flows toward the blade leading edge, the blowing fan installed in the blowing flow path to blow air to the outlet of the blowing flow path, a motor for driving the blowing fan; Blade maintenance apparatus for a wind turbine comprising a heater installed in said blowing passage to heat air in said blowing passage. The method according to any one of claims 1 to 5,
The maintenance unit is a blade maintenance apparatus for a wind turbine comprising a cleaning robot arm installed on both sides of the main body, and a cleaning brush installed at the distal end of the cleaning robot arm. 10. The method of claim 9,
The cleaning robot arm further comprises a shoulder coupled to the side of the body and a plurality of arm parts rotatably connected to each other through a plurality of rotational joints. 10. The method of claim 9,
The cleaning robot arm is a blade maintenance device for a wind turbine further comprises a sensor for sensing the separation distance between the distal end and the blade side. 10. The method of claim 9,
The maintenance device includes a motor installed in the robotic robot arm for driving the cleaning brush, a cleaning liquid tank installed in the main body, and a cleaning liquid supply device for supplying the cleaning liquid of the cleaning liquid tank to the cleaning brush. Blade Maintenance. The method of claim 12,
The maintenance unit surrounds the inlet of the cleaning liquid supply passage to guide the cleaning liquid to the cleaning liquid supply passage provided on the rotating shaft to which the cleaning brush is coupled to supply the cleaning liquid to the center of the cleaning brush. The blade maintenance apparatus for a wind turbine further comprising a washing | cleaning liquid guide member provided in the outer surface of the said rotating shaft in the form, and a washing | cleaning liquid supply pipe which guides the washing | cleaning liquid of the said washing | cleaning liquid tank to the said washing | cleaning liquid guide member. The method according to any one of claims 1 to 5,
The maintenance unit is an inspection robot arm which is installed on both sides of the main body, and the inspection unit which is installed at the distal end of the inspection robot arm for defect inspection of the blade side and implemented by at least one of the camera and the ultrasonic inspection device Blade maintenance device for wind turbines, including. 15. The method of claim 14,
The inspection robot arm further comprises a shoulder coupled to the side of the body and a plurality of arms coupled to each other rotatably connected through a plurality of rotary joints. The method according to any one of claims 1 to 5,
The maintenance unit is installed on the main body for defect inspection of the blade leading edge blade maintenance device for a wind turbine comprising an inspection unit implemented by at least one of a camera and an ultrasonic inspection device. The method according to any one of claims 1 to 5,
The main body blade maintenance apparatus for a wind turbine comprising a first sensor for detecting the position of the free end of the blade, and a second sensor for detecting the position of the hub side end of the blade.

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