JP2012007525A - Maintenance construction method for windmill blade of wind-power generation equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a maintenance construction method which can be performed, by one elevator for maintenance constructed on one rack rail and few work process persons.SOLUTION: In the maintenance construction method for a windmill blade 102a of wind-power generation equipment, a rack rail constructing plate 30 of the prescribed length in which strong magnets 20 are fixed at both ends is fixed to an outer peripheral plane of a wind-power generation tower 101 keeping the prescribed interval, at the rack rail 10 stood vertically near a base end of the outer peripheral plane of the wind-power generation tower 101, the rack rail 10 is stood vertically, an elevator 50 for maintenance joining integrally a driving device 40 for elevation is installed, the rack rail constructing plate 30 is sequentially fixed riding on the elevator 50 for maintenance, the rack rail 10 is extended to the upper part, the rack rail 10 is added to the peak end of the wind-power generation tower 101, a work bench 70 for inspecting blades is coupled to a driving device 40 of the elevator 50 for maintenance, then, repairing can be performed from a tip of a blade to a root by moving the work bench 70 for inspecting blades.

Description

  In the present invention, the wind turbine blades (blades) of existing wind power generation facilities and their functional parts are repaired and replaced when they are damaged by aging or lightning strikes, etc., without using a large crane and with minimal construction costs. It is related with the maintenance method of the windmill blade of a wind power generation equipment for performing in a construction period.

  The progress and development of civilization and culture will inevitably involve an increase in power demand, but there are limited areas suitable for hydropower generation, and thermal power generation that relies on fossil fuels has limited fuel resources. Damage to the natural environment, nuclear power generation is a danger due to radioactivity. Therefore, in recent years, awareness of wind power generation, which has no fear of resource waste and environmental destruction, is rapidly increasing.

  Since wind power towers are made of steel, the number of maintenance such as cleaning and painting of the tower and inspection and repair of wind turbine blades (blades) will increase over the years after construction. Maintenance needs to be accessed from the outside of the wind power generation tower. If the tower is constructed of steel frames, a guide is provided on the steel frame, the cradle is moved up and down along the guides, and the wind turbine blades (blades) ) Is repaired or replaced.

  In many cases, wind power generation towers constructed as wind power generation facilities throughout Japan are installed in the hills and wilderness areas of the remote areas. And the installation place of the wind power generation tower is maintained like a park, and it is trying to make use for the activation of the remote area. Therefore, an attempt has been made to improve the appearance by changing the structure of the wind power generation tower from a steel frame to a cylindrical tower.

  Such access to the cylindrical tower from the outside has no clue on the outer peripheral surface, so a large crane like that used in the construction of the wind power generation tower is carried to the site. In order to bring a large crane to such a place near the wind power generation tower, it is necessary to secure roads and supplementary work such as iron plate curing, which incurs a lot of labor costs such as crane transportation and operation costs. Such work will ruin the gardens that have been built, built, and nurtured over the years, and it is difficult to ignore the construction costs required for repairs and the loss associated with suspension of use of the parks. Also, if the place where the wind power generation tower was installed was pasture, there were various procedures such as restoration of pasture damaged due to iron plate curing, compensation costs until pasture restoration, temporary diversion of farmland, and the like.

  Conventionally, maintenance from the outside is generally performed by suspending a gondola or the like at the tip of the large crane and placing an operator in it to inspect and repair, but because of its height (60-80 meters), it is very It was difficult and the degree of freedom was narrow, and I could not work satisfactorily because of the unstable posture. Naturally, if the wind became stronger, the gondola shook, making it dangerous work, forced to stop working suddenly, extending the construction period and increasing the cost.

  The applicant of the present application has already repaired a large cylindrical tower such as a wind power generation tower without using a large crane (see, for example, Patent Document 1) and the existing wind power generation using the repair method. Wind turbine generators for repairing and exchanging wind turbine blades (blades) and their functional parts, etc., when they are damaged by aging or lightning strikes, etc. without using large cranes and with minimal construction costs and construction periods A wind turbine blade maintenance method and maintenance device have been developed (see, for example, Patent Document 2).

JP 2005-2875 A WO2009-101697

  However, the repair method, the maintenance method, and the maintenance device shown in Patent Document 1 and Patent Document 2, as shown in FIG. 16, provide a clue to the outer peripheral surface 101 of the cylindrical wind power generation tower 100, so that four people can work. A process worker detachably wraps and fixes the metal band fixing band 105 at two upper and lower positions near the base end in a detachable manner, and four rack rails having a predetermined length between the upper and lower metal band fixing bands. 106 is detachably mounted, and four maintenance elevators 108 equipped with a driving device for raising and lowering are installed on the respective rack rails, and four workers are placed on the rack rails and moved again, and the metal band fixing band is again provided. 105, the rack rail 106 is extended upward, and the rack rail 106 is sequentially added to the top end of the wind power generation tower, and the rack rail 106 is installed. The maintenance elevator 108 is used to wind and fix a lifting pulley band around the top of the wind power generation tower, and the maintenance work stage is moved to a predetermined position by the pulley of the pulley pulley and the winch hoisting machine installed on the ground. Because it consists of the work process that can be moved and repaired from the tip of the windmill blade to the root, the metal band fixing band is wound and fixed, and when four rack rails of a predetermined length are detachably installed, Four maintenance elevators and four workers were required respectively.

  The present invention develops an epoch-making work process, so that one work process that requires four maintenance elevators and four work process workers installed on four rack rails is provided. It is an object of the present invention to provide a maintenance method for wind turbine blades of a wind power generation facility that can be performed by a single elevator for maintenance and a small number of workers.

  In order to achieve the above object, the invention according to claim 1 is a maintenance method for repairing a wind turbine blade (blade) of an existing wind power generation facility and its functional parts, and has a taper without any clues. A rack rail erection plate of a predetermined length with strong magnets fixed at both ends is mounted on the rack rail vertically installed near the base end of the outer peripheral surface of the cylindrical wind power tower, above and below the outer peripheral surface of the wind power tower. A work process for fixing at two predetermined intervals, a work process for vertically mounting a rack rail of a predetermined length between two rack rail mounting plates on the upper and lower sides, and an elevator for raising and lowering on the vertically mounted rack rail. The work process of installing a lift for maintenance integrated with a drive device, the lift for maintenance is raised, the above work is repeated on the raised lift for maintenance, Next work is to fix the rack rail installation plate, extend the rack rail upward, and then add the rack rail sequentially to the top of the wind power tower, and to wind and fix the band with a pulley for lifting to the top of the wind power tower The blade inspection platform is connected to the process and the maintenance elevator drive, and the blade inspection platform is combined by the combined force of the maintenance elevator drive, pulley with pulley, and winch hoist installed on the ground. It is characterized by comprising a work process for moving to a predetermined position and a work process for repairing from the tip of the blade to the base by moving the blade inspection work table.

  The invention described in claim 2 is a maintenance method for wind turbine blades of the wind power generation facility according to claim 1, wherein the strong magnets fixed to both ends of the rack rail erection plate are tapered cylindrically shaped. In fixing to a predetermined position on the outer peripheral surface, a strong magnet is fixed using a bracket.

  The invention according to claim 3 is the maintenance method of the wind turbine blade of the wind power generation facility according to claim 2, wherein the bracket is strong enough to be fixed to the outer peripheral surface of the wind power generation tower having a tapered cylindrical shape. This is characterized in that the angle of the magnet can be adjusted.

  The invention according to claim 4 is the maintenance method of the wind turbine blades of the wind power generation facility according to claim 2, wherein the bracket fixes the strong magnet to the outer peripheral surface of the tapered cylindrical wind power generation tower. A magnet operating jig for removing the strong magnet from the outer peripheral surface of the wind power generation tower is provided.

  Further, the invention according to claim 5 is the maintenance method for the wind turbine blades of the wind power generation facility according to claim 1, wherein the blade inspection work table is connected to the blade inspection work table connected to the drive device of the maintenance elevator. These base ends are connected by a flexible joint that can move vertically and horizontally.

  The invention described in claim 6 is the maintenance method for the wind turbine blades of the wind power generation facility according to claim 1, wherein the blade inspection work table is installed on the ground and the pulley of the pulley band when moving the blade inspection work table to a predetermined position. The winch hoisting machine and the maintenance elevator driving device are moved in synchronization with each other.

  Further, the invention described in claim 7 is the wind turbine blade maintenance method for the wind power generation facility described in claim 1, and when the blade is repaired by the blade inspection worktable, the mobile scaffold is used as the blade inspection worktable. It is attached and the back side of the blade can be repaired.

  According to the wind turbine blade maintenance method of the wind power generation facility according to the present invention, the rack rail vertically installed near the base end of the outer peripheral surface of the tapered cylindrical shape without any clues is strongly attached to both ends. A predetermined length of rack rail erection plate having a predetermined length to which a magnet is fixed is fixed between two upper and lower portions of the outer peripheral surface of the wind power generation tower with a predetermined interval, and a predetermined length of the rack rail erection plate between the upper and lower rack rail erection plates. Work process for installing the rack rail vertically, work process for installing a lift for maintenance that integrates the drive device for lifting on the vertically installed rack rail, and for the maintenance that is raised by raising the lift for maintenance Ride on the elevator and repeat the above work to fix the rack rail installation plate in sequence and extend the rack rail upward until the top of the wind power tower is The work process of adding rails sequentially, the work process of winding and fixing a band with a pulley for lifting on the top end of the wind power generation tower, the blade inspection work table connected to the drive device of the maintenance elevator, and the maintenance elevator The working process of moving the blade inspection platform to a predetermined position by the combined force of the drive unit, pulley of the band with pulley and winch hoist installed on the ground, and the movement of the blade inspection platform, It is possible to perform the work process that required four maintenance elevators and four workers by one maintenance elevator and a small number of workers. can do.

  According to the second aspect of the present invention, when the strong magnets fixed to both ends of the rack rail installation plate are fixed to predetermined positions on the outer peripheral surface of the tapered cylindrical wind power generation tower, the strong magnets are used by using the brackets. As a result, the strong magnet can be fixed at an accurate position.

  Further, according to the invention described in claim 3, the angle of the strong magnet can be adjusted so that the bracket can be fixed to the outer peripheral surface of the tapered cylindrical wind power generation tower. Can be fixed.

  According to the invention described in claim 4, the bracket is provided with a magnet operation treatment for fixing the strong magnet to the outer peripheral surface of the tapered cylindrical wind power generation tower and removing the strong magnet from the outer peripheral surface of the wind power generation tower. Since the tool is attached, the strong magnet can be fixed and removed with a simple operation.

  According to the fifth aspect of the present invention, when the blade inspection workbench is connected to the driving device of the maintenance elevator, the base end of the blade inspection workbench is connected by a flexible joint that can move vertically and horizontally. Therefore, when the blade inspection work table is moved, it is possible to cope with fluctuations in wind force, wind direction, and the like.

  According to the invention described in claim 6, when the blade inspection work table is moved to a predetermined position, the pulley of the band with pulley and the winch hoist installed on the ground and the drive device of the maintenance elevator are synchronized. The blade inspection work table can be moved without tilting.

Further, according to the seventh aspect of the present invention, when the blade is repaired on the blade inspection workbench, the movable scaffold is attached to the blade inspection workbench, so that the back side of the blade can be attached without rotating the blade once. Can be repaired.

(A)-(c) shows the outline of the maintenance method of repairing with the wind turbine blade attached to the wind power generation tower which is an embodiment of the maintenance method of the wind turbine blade of the wind power generation facility according to the present invention along the execution procedure. FIG. (A)-(d) is an assembly conceptual diagram which shows the state which attached the magnet and the rack rail to the rack rail construction board in 1st Example. (A)-(b) is an operation | movement conceptual diagram of the bracket in 1st Example. The state which fixed the rack rail construction board and rack rail in 1st Example to the outer peripheral surface of a wind power generation tower is shown, (a) is a front view, (b) is a top view of a front-end | tip part, (c) is a base end It is a top view of a part. It is a side view which shows the connection state of the working table for blade inspection, and the elevator for maintenance. It is a conceptual diagram which shows the base end part of the work table for blade inspection. It is a conceptual diagram which shows the movable scaffold of the workbench for blade inspection. It is a conceptual diagram which shows the state which moves the working table for blade inspection with the pulley of the band with a pulley, and the drive device of the winch hoisting machine installed on the ground, and the elevator for maintenance. It is a conceptual diagram which shows the drive device and braking device for raising / lowering of the maintenance elevator. It is an assembly conceptual diagram which shows the state which attached the magnet and the rack rail to the rack rail construction board in 2nd Example. (A)-(f) is explanatory drawing which showed the procedure which adheres the magnet in 2nd Example to the outer peripheral surface of a wind power generator tower. The state which fixed the rack rail installation board and rack rail in 2nd Example to the outer peripheral surface of a wind power generation tower is shown, (a) is a front view, (b) is a top view. The magnet positioning jig | tool in 2nd Example is shown, (a) is a front view, (b) is a top view. The magnet removal jig | tool in 2nd Example is shown, (a) is a conceptual diagram, (b)-(d) is explanatory drawing which showed the procedure which removes a magnet. A wind power generation equipment is shown, (a) is a side view, (b) is an enlarged view of a windmill blade part. It is explanatory drawing of the prior art example which constructs a rack rail on the outer peripheral surface of a wind power generation tower.

  Embodiments of the present invention will be specifically described below based on the embodiments of the present invention illustrated in the accompanying drawings.

  As shown in FIG. 15 (a), most of the wind power generation facilities 100 constructed all over Japan are constructed at the upper end of the tapered cylindrical wind power generation tower 101 constructed on the concrete placement foundation G. A generator 103 that is rotationally driven by a three-blade wind turbine 102 of a horizontal axis propeller type is installed, and a wind turbine blade 102 a is detachably attached to a boss 102 b of the wind turbine 102. Although not shown in the figure, the windmill blade 102a has a variable pitch mechanism incorporated in its base end portion in order to cope with fluctuations in wind speed.

  The windmill 102 differs in size, length, and angle for each manufacturer and model, and even if it is a single windmill, the size (cross section) of the windmill blade 102a is shown in FIG. 15B. The cross section of the base end portion attached to the boss 102b of the windmill 102 has a circular shape, the size of the cross section gradually decreases from the base end portion toward the tip end portion, and the windmill blade 102a is positioned in a suspended shape. The distance between the windmill blades 102a and the windmill tower 101 at the time is such that the distance from the wind power generation tower 101 is increased toward the tip of the windmill blades 102a.

  Inside the wind power generation tower 101, an elevating device or a hoistway (not shown) is provided for carrying a person or an object when the generator 103 is inspected or repaired. However, since there is no clue about the outer peripheral surface of the wind power generation tower 101, when repairing or replacing the windmill blade 102a, conventionally, a large crane is carried to the site each time, or a large work rod is used. I was assembling. To do so, as already mentioned, it takes a considerable amount of money to transport and operate the crane and to construct and remove the work rod.

  In addition, if the entire area where the wind power towers are installed is used as a leisure facility to help promote regional development, it will take a considerable amount of time to restore the park that was damaged by the work, and during that time it will be necessary to close the park. Sometimes.

  As a substitute for the conventional construction method with many difficulties, a repair method and a repair device such as a wind power generation tower according to the prior invention of the present applicant (Japanese Patent Laid-Open No. 2005-2875) have been developed. We succeeded in attaching four rack rails of a predetermined length, which are clues for maintenance, to the outer peripheral surface of the wind power generation tower 101 without any clues. When the four rack rails having a predetermined length are detachably mounted, four maintenance elevators and four workers are required.

  The present invention makes it possible to realize a maintenance method for wind turbine blades of wind power generation equipment with low construction cost and construction period by developing an epoch-making work process for attaching rack rails that are clues for maintenance. This will be described with reference to the drawings.

  First, an outline of the maintenance method for repairing the wind power generation tower 101 with the wind turbine blades (blades) attached without removing the wind turbine blades (blades) damaged by aging deterioration or the like will be described with reference to FIGS. I will explain.

  As shown in FIG. 1 (a), strong magnets 20 are fixed to both ends of a rack rail 10 that stands vertically near the base end of the outer peripheral surface of a tapered cylindrical shape without any clues. The rack rail installation plate 30 having a predetermined length is fixed to the upper and lower two positions on the outer peripheral surface of the wind power generation tower 101 with predetermined intervals, and the rack rails 10 are sequentially vertically placed between the two upper and lower rack rail installation plates 30. A work elevator Hu installed on the rack rail 10 and installed on the rack rail 10 with the drive device 40 for raising and lowering is raised, and the worker Hu who has entered the raised elevator 50 for maintenance is further provided with the rack rail installation plate 30. To fix. In addition, the worker Hu is wearing a safety rope Ar to ensure safety.

  Next, as shown in FIG. 1 (b), the worker Hu who has entered the maintenance elevator 50 extends the rack rail installation plate 30 and the rack rail 10 further upward and racks them up to the top end of the wind power generation tower 101. The rails 10 are successively added, and a pulley-equipped band 60 having a pulley 62 for lifting is wound around the top end of the wind power generation tower 101 and fixed.

  Next, as shown in FIG. 1 (c), once the rack rail 10 is installed to the top end of the wind power generation tower 101, the maintenance elevator 50 is once lowered, and the maintenance elevator 50 and the blade inspection work table 70 are connected. Then, the blade inspection work table 70 is moved to a predetermined position while supporting the tip of the blade inspection work table 70 by the suspension wire 67 and the branch wire 68, and the blade inspection is performed with the wind turbine blade (blade) attached to the wind power generation tower 101. It becomes possible to repair from the tip of the windmill blade (blade) 102a to the base by the worker Hu on the work table 70.

  Next, a first embodiment of the rack rail erection plate 30 will be described. As shown in FIG. 2A, the rack rail installation plate 30 is formed of a square pipe material 31, and bracket fixing holders 32R and 32L are welded to both ends on the rear surface side of the square pipe material 31, and the center on the front side is formed. A rail erection holder 33 to which a rail erection part 34 for erection of the rack rail 10 is welded is screwed. A bracket 21 having a strong magnet 20 is rotatably fixed to the bracket fixing holders 32R and 32L.

  As shown in FIG. 2B, the bracket 21 includes a folder 22 to which the strong magnet 20 is screwed and a bracket fixing holder mounting portion 23, and bracket fixing holders 32 </ b> R and 32 </ b> L welded to both ends of the rack rail installation plate 30. The angle can be variably adjusted so that the strong magnet can be fixed to a predetermined position on the outer peripheral surface of the tapered cylindrical wind power generation tower. Further, a magnet operation jig 24 is attached to fix the strong magnet 20 to the outer peripheral surface of the wind power generation tower 101 and to remove the strong magnet 20 from the outer peripheral surface of the wind power generation tower 101. The magnet operating jig 24 has an eccentric disk 25 for fixing and removing the strong magnet 20 and a rotating lever 26 for rotating the eccentric disk 25.

  As shown in FIG. 2C, the rack rail 10 is bolted to the rail erection part 34, and the rack 11 is installed on the outer surface of the rack rail 10 over the entire length thereof. Further, one side of the rack rail 10 has an insertion structure by means of a rail joint 12, and the rack rail 10 can be connected and connected sequentially. The length of one rack rail 10 is set to a fixed size such that an operator in a standing posture can reach his / her hand up.

  A specific procedure for attaching the rack rail installation plate 30 according to the first embodiment to the outer peripheral surface of the wind power generation tower 101 will be described. First, the first rack rail 10 is erected vertically using the level Sh near the proximal end of the outer peripheral surface of the wind power generation tower 101 without any clues. Next, the square pipe member 31 forming the rack rail erection plate 30 is screwed to the rack rail 10 erected vertically through the rail erection part 34 (FIG. 2C).

  Next, the bracket fixing holder mounting portion 23 of the bracket 21 is inserted into bracket fixing holders 32R and 32L welded to both ends on the rear surface side of the square pipe member 31 forming the rack rail erection plate 30, and bolted to be freely rotatable ( FIG. 2 (d)). At this time, since the folder 22 into which the strong magnet 20 is screwed is not in close contact with the outer peripheral surface of the wind power generation tower 101 by the eccentric disk 25 of the magnet operation jig 24, the strong magnet 20 is not attached to the outer periphery of the wind power generation tower 101. It is not fixed to the surface (FIG. 3 (a)). When the rotary lever 26 is rotated to the magnetizing side from this state, the folder 22 is brought into close contact with the outer peripheral surface of the wind power generation tower 101 (FIG. 3B), and the strong magnet 20 is fixed to the outer peripheral surface of the wind power generation tower 101. The rack rail installation plate 30 at the stage is fixed to the outer peripheral surface of the wind power generation tower 101.

  When the first rack rail 10 has been installed, a maintenance elevator 50 having a raising / lowering driving device 40 is installed on the rack rail, and is raised by the raising / lowering driving device 40 to be raised. The worker Hu who has entered the elevator 50 inserts and connects the second rack rail 10 to the rail joint 12 of the first rack rail 10, and the second rack rail 10 stands vertically using the level Sh. Set up. The second rack rail installation plate 30 is screwed to the second rack rail 10, and the strong magnet 20 screwed to the bracket 21 is fixed to the outer peripheral surface of the wind power generation tower 101. Further, the third rack rail 10 is inserted and connected to the second rack rail 10 and is erected vertically using a level Sh (FIG. 4A). In fixing the rack rail erection plate 30 to the outer peripheral surface of the wind power generation tower 101, the rack rail erection plate 30 has a linear shape, whereas the wind power generation tower 101 has a tapered cylindrical shape. Is large at the proximal end (FIG. 4C) and small at the distal end (FIG. 4B), so the angle of the strong magnet 20 is adjusted by the bracket 21 according to the position to be fixed. Yes. Hereinafter, similarly, the rack rail installation plate 30 and the rack rail 10 are extended upward, and the rack rails 10 are sequentially added to the top end of the wind power generation tower 101. The worker Hu is wearing a safety rope Ar to ensure safety (FIG. 1 (a)).

  As shown in FIG. 9, the drive device 40 for raising and lowering the maintenance elevator 50 includes a pinion 41 that meshes with the rack 11 of the rack rail 10, and a rack that cooperates with the pinion 41 to maintain this meshing state. And a pinion roller 42 for pinching the rail 10. A rotation driving motor or an output shaft of an internal combustion engine (not shown) is connected to the rotation shaft of the pinion 41 to raise and lower the maintenance elevator 50. It is moving. In braking, two systems, a worm speed reducer 43 for a mechanical brake and an electromagnetic brake 44 that operates due to electrical trouble, are arranged to make it safer.

  The total weight of the maintenance elevator 50 and the rack rail 10 is directly added to the concrete placing foundation G, and no load is applied to the wind power generation tower 101. Therefore, the elevator 50 for maintenance is an elevator that is completely different from an elevator (elevator structure standard) and gondola (gondola safety standard) floating in the air, and is excluded from the occupational safety and health regulations. Can be greatly contributed to shortening the construction.

  When the worker Hu who has entered the maintenance elevator 50 extends the rack rail installation plate 30 and the rack rail 10 upward and sequentially adds the rack rail 10 to the top end of the wind power generation tower 101, the maintenance elevator 50 enters the maintenance elevator 50. A pulley-equipped band 60 having a loaded pulley 62 is lifted and wound around the top end of the wind power generation tower 101 (FIG. 1B).

  When the rack rail 10 is installed up to the top end of the wind power generation tower 101, the maintenance elevator 50 is temporarily lowered, and the maintenance elevator 50 and the blade inspection work table 70 are connected by a connecting portion 71 as shown in FIG. The blade inspection work table 70 has a shape projecting from the connected base end in a direction perpendicular to the wind power generation tower 101, and a safety fence 73 is provided on the upper part of the scaffold plate 72 of the blade inspection work table 70. It is installed.

  Pulleys 75 are provided at the left and right ends of the tip of the blade inspection work table 70. The blade inspection work is performed by a pulley 62 of a band 60 with a pulley suspended at the top end of the wind power generation tower 101 and a winch hoisting machine 65 installed on the ground. The base 70 can be moved to a predetermined position. In addition, since it moved to synchronize with the drive device of the maintenance elevator for the movement, the work table for blade inspection can move without tilting.

  When connecting the blade inspection worktable 70 to the drive device 40 for raising and lowering the maintenance elevator 50, the base end of the blade inspection worktable 70 is a flexible joint that can move vertically and horizontally as shown in FIG. Since 76a and 76b are provided, when the blade inspection workbench 70 is moved, it is possible to cope with fluctuations in wind force, wind direction, and the like. Further, as shown in FIG. 7, the blade inspection work table 70 is provided with a movable scaffold 74 that can repair the back side of the blade 102a without rotating the blade 102a once.

  As shown in FIG. 8, the rack rail 10 serving as a clue for maintenance is attached to the outer peripheral surface of the wind power generation tower 101 without any clues of the wind power generation equipment 100 in this way, and the lift for the lift 50 for maintenance is driven up and down. A blade inspection workbench 70 is connected to the apparatus 40, and the tip of the blade inspection workbench 70 is caused by a pulley 62 of a band 60 with a pulley and a winch hoisting machine 65 installed on the ground. The drive device 40 of the maintenance elevator 50 moves in synchronization with each other.

  Further, when connecting the blade inspection worktable 70 to the drive device 40 of the maintenance elevator 50, flexible joints 76a and 76b are provided at the base end of the blade inspection worktable 70 that are movable up and down and left and right (see FIG. 6) Since the tip of the blade inspection work table 70 is supported by pulleys 75 at both ends, a pulley 62 of a band 60 with a pulley, a suspension wire 67 connecting a winch hoisting machine 65, and a branch wire 68 between the ground and the ground. When the blade inspection workbench 70 is moved, it is possible to cope with fluctuations in wind force, wind direction, and the like, and the strong magnet 20 to which the rack rail erection plate 30 is fixed is not peeled off even if strong winds exceed expectations. .

  In this way, the blade inspection work table 70 can be repaired from the tip to the root of the wind turbine blade (blade) 102a without removing the damaged wind turbine blade (blade) 102a by moving up and down. To repair the opposite side of the windmill blade (blade) 102a, it can be repaired by rotating the windmill blade once, but in the case of partial repair that does not require one rotation, as shown in FIG. By providing the scaffold 74, it can be repaired in that position.

  After the repair of the wind turbine blades (blades) 102a, the blade inspection worktable 70 and the maintenance elevator 50 are lowered to the ground, the blade inspection worktable 70 is removed, and the operator is put on the maintenance elevator 50 again and driven. The apparatus 40 moves up to the top end of the wind power generation tower 101 and moves down while removing the rack rail 10 and the rack rail installation plate 30 from the outer peripheral surface of the wind power generation tower 101. In removing the rack rail installation plate 30 from the outer peripheral surface of the wind turbine tower 101, first, it is necessary to remove the strong magnet 20 from the outer peripheral surface of the wind power generation tower 101.

  In order to remove the strong magnet 20 from the outer peripheral surface of the wind power generation tower 101, a magnet operation jig 24 attached to the bracket 21 is used. That is, when the rotary lever 26 of the magnet operation jig 24 is rotated to the opposite side to the magnetizing side, a slight gap is provided between the outer peripheral surface of the wind power generation tower 101 and the folder 22 to which the strong magnet 20 is screwed by the eccentric disc 25. Since the gap is created, the strong magnet 20 can be removed from the outer peripheral surface of the wind power generation tower 101 with a simple operation.

  A specific procedure for attaching the rack rail erection plate 302 according to the second embodiment to the outer peripheral surface of the wind power generation tower 101 will be described instead of the rack rail erection plate 30 described above. As shown in FIG. 10, the rack rail erection plate 302 is formed of a square pipe material 312, and mounting portions 322 </ b> R and 322 </ b> L for fixing the strong magnet 202 are welded to both ends on the rear surface side of the square pipe material 312. Strong magnets 202 are fixed on both sides centering on 212. The bracket 212 is configured such that the angle can be adjusted so that the strong magnets 202 fixed to both ends of the rack rail erection plate 302 can be adhered and fixed to the outer peripheral surface of the tapered cylindrical wind power generation tower 101. It is.

  At the center of the front side of the square pipe material 312 forming the rack rail installation plate 302, a mounting holder 332 welded to the rail installation part 342 for installing the rack rail 10 is screwed, and the rack rail 10 is attached to the rail installation part 342. Use bolts. A rack 11 is provided on the outer surface of the rack rail 10 over its entire length. Further, one side of the rack rail 10 has an insertion structure by means of a rail joint 12, and the rack rail 10 can be connected and connected sequentially. The length of one rack rail 10 is set to a fixed size such that an operator in a standing posture can reach his / her hand up.

  In order to attach the rack rail installation plate 302 to the outer peripheral surface of the wind power generation tower 101, first, the first rack rail 10 is set up vertically at the base end of the wind power generation tower 101 using the level Sh. Next, as shown in FIG. 11 (a), the magnet positioning jig Mj is temporarily fixed to the screw hole of the rack rail 10 for bolting to the rail erection part 342 with a bolt. As shown in FIG. 13A, the magnet positioning jig Mj has a shape including wings Mw1 and Mw2 which are provided with a temporarily fixed fixing portion Mk standing at the center and extending at equal intervals from the center to the left and right. Wings Mw1 and Mw2 are formed of a flexible material such as a plastic plate, and a horizontal line Mh is drawn at the center thereof.

  Next, as shown in FIG. 11B, the wings Mw1 and Mw2 of the temporarily positioned magnet positioning jig Mj are manually aligned with the wind power generation tower 101, and the center of the left and right wings Mw1 and Mw2 are Are marked on the outer peripheral surface of the wind power generation tower 101. Next, as shown in FIG. 11 (c), the temporarily fixed magnet positioning jig Mj is removed, and the center m1 of the left and right wings Mw1 and Mw2 marked on the outer peripheral surface of the wind turbine tower 101 and the upper and lower corners m2 and m3 are indicated by lines. Tie with.

  Next, as shown in FIG. 11 (d), the bracket 212 to which the strong magnet 202 is fixed is aligned with the central marking position m1, and the corners of the strong magnet 202 are aligned with the marking positions m2 and m3 on both ends. As shown in FIG. 11 (e), the strong magnet 202 is tilted and fixed to a predetermined position on the outer peripheral surface of the wind power generation tower 101 with a predetermined interval, and as shown in FIG. 11 (f), the fixed strong force is applied. The mounting portions 322R and 322L of the rack rail installation plate 302 are fixed to the bracket 212 of the magnet 202, and the first-stage rack rail installation plate 302 is fixed to the base end of the wind power generation tower 101.

  When the first rack rail 10 is installed on the first rack rail installation plate 302, the second rack rail 10 is subsequently connected to the rail joint 12 of the first rack rail 10 as shown in FIG. And the second rack rail 10 is erected vertically using the level Sh. The magnet positioning jig Mj is temporarily fixed to the second rack rail 10, and the strong magnet 202 is positioned using the magnet positioning jig Mj as described above, and the strong magnet 202 is fixed to the outer peripheral surface of the wind power generation tower 101. Then, the second rack rail erection plate 302 is fixed. Further, the third rack rail 10 is inserted and connected to the second rack rail 10 and is erected vertically using the level Sh. Similarly, the magnet positioning jig Mj is temporarily fixed to the third rack rail 10, and the position of the strong magnet 202 is determined using the magnet positioning jig Mj. In order to fix the rack rail installation plate 302 to the outer peripheral surface of the wind power generation tower 101, the rack rail installation plate 302 is linear, whereas the outer peripheral surface of the wind power generation tower 101 forms a large arc. As shown in FIG. 12B, the angle of the strong magnet 202 is adjusted by the bracket 212.

  When the first and second rack rails 10 have been installed, the rack rail 10 is installed to the top end of the wind power generation tower 101 in the same manner as in the first embodiment, and the worker Hu who enters the blade inspection work table 70 However, by moving the blade inspection work table 70 up and down, the damaged windmill blade (blade) 102a is repaired from the tip of the windmill blade (blade) 102a to the base.

  After the repair of the windmill blade (blade) 102a, the blade inspection worktable 70 and the maintenance elevator 50 are lowered to the ground, the blade inspection worktable 70 is removed, and the maintenance elevator 50 again has the magnet removal jig Kj. Then, the operator lifts the rack rail 10 and the rack rail installation plate 302 from the outer peripheral surface of the wind power generation tower 101 with the drive device 40. In order to remove the rack rail installation plate 302 from the outer peripheral surface of the wind power generation tower 101, it is first necessary to remove the strong magnet 202 from the outer peripheral surface of the wind power generation tower 101.

  FIG. 14A shows a magnet removal jig Kj for removing the strong magnet 202 from the outer peripheral surface of the wind power generation tower 101, and includes a handle Kh and a U-shaped fitting Ku. The handle Kh is bent from the middle so that it can be easily carried, and the tip of the U-shaped fitting Ku is covered with rubber Kg.

  A procedure for removing the strong magnet 202 from the outer peripheral surface of the wind power generation tower 101 using the magnet removal jig Kj will be described. First, the handle Kh of the magnet removal jig Kj is extended (FIG. 14 (b)), the U-shaped fitting Ku is fitted into the strong magnet 202, and the handle Kh is pushed in the direction of the arrow Ya (FIG. 14 (c)). A space is opened between 202 and the outer peripheral surface of the windmill tower 101, and the strong magnet 202 is removed from the outer peripheral surface of the wind power generation tower 101 (FIG. 14 (d)). The rubber Kg at the tip of the U-shaped fitting Ku prevents the U-shaped fitting Ku from slipping when fitted into the strong magnet 202.

As is apparent from the above description, according to the maintenance method for wind turbine blades of a wind power generation facility according to the present invention, extremely useful effects in practice as listed below can be obtained.
(A) It can be easily constructed even in places where huge clay cannot be used due to restrictions on transportation and operation, etc., or where large-scale work cages cannot be constructed due to place restrictions. .
(B) Since a work process that requires four maintenance elevators and four work operators can be performed by one maintenance elevator and a small number of worker workers, the construction cost and construction period Can be greatly shortened.
(C) Needless to say, four rack rails are necessary, but since one rack rail is possible, the cost of materials can be greatly reduced.
(D) Like a wind power generation tower, even if the entire installation area is converted into a garden, the area where the garden is damaged by the repair work can be minimized.
(E) Even when the wind power generation tower is constructed on the sea, many excellent features of the present invention can be exhibited to the maximum extent.
(F) Even if a strong wind exceeding the expectation blows on the work table for blade inspection, the strong magnet to which the rack rail installation plate is fixed is not peeled off by the flexible joint and the branch wire.
(G) If the required construction period is 60 days or more, there is a related law that requires application for construction permission. However, the construction method of the present invention eliminates the need for notification of installation and removal of maintenance elevators. Since it takes less than 60 days, you can save time and effort to apply for permission.

DESCRIPTION OF SYMBOLS 100 Wind power generation equipment 101 Wind power generation tower 102 Windmill 102a Windmill blade 10 Rack rail 11 Rack 20 Strong magnet 21 Bracket 22 Folder 23 Bracket fixing holder attaching part 24 Magnet operation jig 25 Eccentric disk 26 Rotating lever 30 Rack rail installation board (the 1st) 1 example)
31 Square pipe members 32R, 32L Bracket fixing holder 33 Rail erection holder 34 Rail erection part 40 Elevating drive unit 50 Maintenance elevator 60 Pulley band 62 Pulley 65 Winch hoisting machine 67 Suspension wire 68 Branch wire 70 Blade inspection work table 71 Connecting portion 72 Scaffold plate 73 Safety fence 74 Mobile scaffold 76a, 76b Flexible joint Mj Magnet positioning jig Kj Magnet removal jig Hu Working worker Ar Safety rope

Claims (7)

  This is a maintenance method for repairing wind turbine blades (blades) of existing wind power generation facilities and their functional parts, and is near the base end of the outer peripheral surface of a tapered cylindrical shape without any clues A rack rail erected vertically on the rack rail, and a fixed-length rack rail erection plate fixed at two ends to the upper and lower two outer peripheral surfaces of the wind power tower at predetermined intervals; A work process for vertically laying a rack rail of a predetermined length between two rack rail construction plates, and a work process for installing a lift for maintenance integrated with a lift drive device on the vertically installed rack rail; , Raise the elevator for maintenance, ride the raised elevator for maintenance, repeat the above work, and fix the rack rail installation plate in sequence to the rack rail Extending upward and sequentially adding rack rails to the top of the wind power tower, working process of winding and fixing a band with a pulley for lifting around the top of the wind power tower, and checking the blades in the drive device of the maintenance elevator For the inspection of blades, connecting the operation platform for maintenance and moving the blade inspection platform to a predetermined position by the combined force of the drive device of the elevator for maintenance, the pulley of the band with pulley and the winch hoist installed on the ground A maintenance method for wind turbine blades of a wind power generation facility, characterized by comprising a work process that allows repair from the tip of the blade to the root by moving the work table.   The strong magnets are fixed using brackets when fixing the strong magnets fixed to both ends of the rack rail erection plate at predetermined positions on the outer peripheral surface of the tapered cylindrical wind power generation tower. The maintenance method of the windmill blade of the wind power generation facility of 1 description.   The wind turbine blade of a wind turbine generator according to claim 2, wherein the angle of the strong magnet can be adjusted so that the bracket can be fixed to the outer peripheral surface of the tapered wind turbine tower. Maintenance method.   The bracket is provided with a magnet operating jig for fixing the strong magnet to the outer peripheral surface of the tapered cylindrical wind power generation tower and removing the strong magnet from the outer peripheral surface of the wind power generation tower. The maintenance method of the windmill blade of the wind power generation facility of Claim 2.   2. The wind power according to claim 1, wherein when the blade inspection work table is connected to the drive device of the maintenance elevator, the base end of the blade inspection work table is connected by a flexible joint movable up and down and left and right. Maintenance method for wind turbine blades of power generation equipment.   2. When moving the blade inspection workbench to a predetermined position, the pulley of the band with pulley and the winch hoist installed on the ground and the drive device of the maintenance elevator are moved synchronously. Maintenance method for wind turbine blades of wind power generation facilities in Japan.   2. The wind turbine blades of a wind turbine generator according to claim 1, wherein when repairing the blades on the blade inspection workbench, a movable scaffold is attached to the blade inspection workbench so that the back side of the blade can be repaired. Maintenance method.

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