JP2010265752A - Method for hoisting blade of wind turbine generator system and device thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for hoisting a blade of wind turbine generator system maintaining a posture of a frame fixing and holding the blade always horizontal, and a device thereof. <P>SOLUTION: When a frame body 2 is hoisted by three ropes 21, (22), 23 after fixing and holding the blade B to a blade holding part 3 of the frame body 2, signal from a transmitter held by an operator on the ground is transmitted to an oil controller attached to a cylinder connected to the rope which requires inclination correction to move a piston rod downward by sending oil at a piston front side of the cylinder to a piston rear side if indicating lamps 9, 10 indicating inclination in a fore-and-aft direction and/or a left-and-right direction attached to the frame body 2 are turned on. Length of the rope is substantially extended by the movement of the piston rod, and the frame body 2 is maintained always in the horizontal state. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

The present invention relates to a method of lifting a blade in a wind power generation facility and a lifting device used for the lifting method. The blade to be attached can be attached in close proximity to a rotor.

As demand for wind power generation increases, the size of wind power generation facilities is increasing.
In particular, in a large-scale wind power generation facility with a blade length exceeding 30 m, a nacelle (generator having a weight of 60 to 70 t provided on the top of a tower (tower) of 40 to 120 m installed in advance. ), The base of the blade is precisely opposed to the rotor, and an operation of tightening the two while maintaining the state is required.

  Also, even if the blades are forced to be replaced for some reason while the large wind power generation equipment is in operation, after the blades to be replaced are held in a fixed position, release the tightening between the blades and the rotor. It is required to lower the blade to the ground.

  However, most blades have a wing-shaped cross section composed of an arc-shaped upper outer shell and lower outer shell, but the cross-sectional shape of the rotor side with the spindle-shaped cross-section and the tip of the opposite end Therefore, it is difficult to accurately find the center of gravity of the blade itself.When lifting or hanging, the size of the blade is greatly affected by the wind. In addition, there is a considerable concern about the danger to workers.

  As a method for constructing such a wind power generation facility, for example, Japanese Patent Laid-Open No. 2004-308521 (Patent Document 1) proposes a method that does not use a large crane.

The construction method of Patent Document 1 includes a lower end portion of a tower constructed by sequentially adding a plurality of divided towers upward, and a multi-stage mast that is arranged so as to surround the tower and can be raised and lowered telescopically. The lower part of the mast consisting of is supported by a jacket-type foundation structure.
Next, while supporting the mast stably by the existing part of the tower, the mast is lifted sequentially, and the tower is completed while lifting the divided tower by the lifting mechanism installed at the top of the mast. The generator and rotor blades are lifted and installed, and then the mast is lowered and contracted, and then removed from the jacket-type foundation structure and dismantled.

  Japanese Patent Laid-Open No. 2006-299956 (Patent Document 2) discloses a wind power generation facility and a method for constructing a wind power generation facility that can be installed without being influenced by the location conditions and can reduce the construction cost. Proposed.

  This construction method of wind power generation equipment is mounted on two tower bodies installed at a predetermined interval, a generator frame installed at the top of both tower bodies 2, and an upper part of the generator frame. It is equipped with a generator and a plurality of wings attached to the generator. A lifting machine is installed at the top of both towers via a lifting machine frame, and the generator frame is attached to the suspension attached to the lifting machine. Connect and lift the generator base, generator and wings as a unit through the suspension material by operating the lifting machine, position between the tower bodies at the top of both tower bodies, and It is fixed to the top of the tower.

  Furthermore, in Japanese Patent Application Laid-Open No. 2007-71097 (Patent Document 3), installation work of wind power generators such as nacelles and rotor blades is performed in a relatively low place of about 20 m to 30 m above the ground, so A construction method for a wind power generation tower is disclosed, which makes it possible to construct a large-scale wind power generation tower having a size of about 40 to 120 m without using any temporary members, and is excellent in workability, safety and economy. Has been.

  This wind power tower is constructed by nesting two towers that are slidable in the vertical direction and are assembled in a nested manner. The outer tower is fixed to the foundation, and the nacelle is attached to the head of the inner tower. , A step of installing a wind turbine generator such as a rotor blade, and the inner tower body is lifted by taking a reaction force against the outer tower body, and at the stage where the rising limit is reached, the lower end of the inner tower body The wind power generation tower is constructed by the step of fastening the upper end of the outer tower body to the upper end portion.

  Furthermore, Japanese Patent Laying-Open No. 2006-207502 (Patent Document 4) proposes a method for constructing a wind power generator without giving unnecessary strength to the tower-like structure of the wind power generator.

In this construction method, on the stage, the nacelle is placed at a position away from the center axis of the tower, and two counterweights are suspended on the opposite side of the nacelle so as to balance the nacelle. Lower.
When the stage is raised along the height direction of the tower, the nacelle and the counterweight are balanced, and when the stage reaches the top of the tower and the nacelle is moved to the center axis of the tower, the counterweight Is moved in the horizontal direction to balance the nacelle and the counterweight.

On the other hand, for example, in Japanese Patent Application Laid-Open No. 06-048680 (Patent Document 5), when lifting a suspended load such as a large equipment of a power plant, the suspended load attitude control device can quickly and safely hold the suspended load horizontally. Has been proposed.
The load load control device includes a hydraulic jack at each intermediate portion, four wire ropes for lifting the load, and a plurality of inclination detectors for detecting the inclination of the load installed on the load. The signal from these inclination detectors is read, the required movement amount of the piston in the hydraulic jack that holds the suspended load horizontally is calculated, the calculation device that transmits the required movement amount, the required movement amount is received, It comprises an oil control unit 10 that controls the hydraulic oil fed to the hydraulic jack.

JP-A-2004-308521 (Claim 1, FIGS. 1 to 6) JP 2006-299956 A (Claim 1, FIG. 16) Japanese Patent Laying-Open No. 2007-071097 (Claim 1, FIG. 1) JP 2006-207502 A (Claim 1, FIG. 1) Japanese Patent Laid-Open No. 06-048680 (Claim 1, FIGS. 1-2)

Any of the methods for constructing a wind turbine generator described in the above-mentioned patent documents is aimed at improving workability, and has the effects described in each patent document.
However, the method of Patent Document 1 is a method in which a plurality of divided towers are sequentially added upward, and therefore, even if a large blade can be mounted on the rotor portion of the nacelle at the construction stage, the blade is removed for some reason. In the case of replacement, a large crane is required, and maintenance is not considered.

  The construction method described in Patent Document 2 has the same problems as Patent Document 1 because the lifting machine is finally removed, and is not suitable for mounting or replacing a large blade.

  The construction method described in Patent Document 3 is to build a tower body in a nested manner after attaching a large blade to the tower at a relatively low position 20-30 m above the ground. Is not considered.

  Furthermore, in the construction method described in Patent Document 4, a nacelle is arranged at a position spaced from the center axis of the tower, a count weight is arranged on the opposite side of the nacelle and the tower, and the stage is set to a predetermined position while maintaining the balance. The blades are not suitable for construction of large wind power generators.

Furthermore, in the suspended load load appearance control device described in Patent Document 5, each other end portion of four wire ropes each having one end portion attached to a hook of a crane and provided with a hydraulic jack at an intermediate portion An inclination detector for detecting the inclination angle in the longitudinal direction and an inclination detector for detecting the inclination angle in the width direction provided on the hanging load after mounting on each corner portion of the suspended load and mounting the device on the suspension load Thus, each inclination is detected, the arithmetic device and the oil control unit are fully utilized, the hydraulic jacks are simultaneously operated, and the suspended load is leveled.
However, it is not necessarily an advantageous device for application to large blades in wind power generation facilities that are strongly affected by wind.
In addition, it is necessary to provide piping for supplying hydraulic oil to each hydraulic jack, and the apparatus itself is complicated and has a problem from the viewpoint of cost.

In view of the present situation, the present invention recognizes the inclination of the frame for fixing and holding the lifted blade, and confirms the lighting of the tilt indicator lamp interlocked with the inclinometer provided on the frame, and then an operator placed on the ground selects the transmitter. A method of lifting a blade in a wind power generation facility capable of operating and operating an oil controller attached to a hydraulic cylinder and changing the oil in the hydraulic cylinder to always keep the posture of the frame in a horizontal state; The lifting device is intended to be provided.

In order to achieve the above object, the invention according to claim 1 of the present invention provides:
A frame main body having a U-shaped cross-section for holding a blade by opening the front and left and right side portions;
A pair of left and right slope adjustment ropes each having one end fixed to the left and right upper front edges of the frame main body, and a front and rear inclination adjustment having one end fixed to the upper rear of the center of the frame main body The other end of each of the ropes for adjusting the right and left inclination is a cylinder extending downward and obliquely provided on the left and right sides of the lower end of a triangular plate connected to the hook part of the crane. For the piston rod, the other end of the rope for adjusting the forward / backward tilt uses a lifting member fixed to the piston rod of the cylinder extending obliquely downward from the center of the lower end of the plate. ,
After inserting the center of gravity of the blade to be lifted into the frame main body blade holding part from the spindle-shaped body part side, and placing the blade on the cradle disposed at the bottom of the frame main body,
The upper surface portion of the blade is pressed by a clamp member interlocked with a hydraulic cylinder disposed on the upper portion of the frame main body facing the cradle, and the blade is fixed and held in the frame main body,
Lifting the lifting member linked to the frame main body with the blade fixed, using a crane in an upright state,
In the middle of the lifting, while viewing the tilt indicator lamps disposed on the lower left and right of the frame main body and the tilt indicator lamps for detecting the front and rear tilt disposed on the lower outer surface, from below,
Oil attached to a cylinder associated with a rope whose length needs to be adjusted when one of the tilt indicator lights is lit by a signal from an inclinometer that operates when the frame main body is tilted more than a preset angle. A rope connected to this piston rod by transmitting a signal from the transmitter on the ground to the controller, allowing the oil in front of the piston of the cylinder to escape to the rear of the piston of the cylinder via the bypass, and extending the piston rod downward. The blade lifting method in the wind power generation facility is characterized in that the length of the frame is substantially extended so that the frame main body is always kept in a horizontal state.

The invention according to claim 2 of the present invention is
In the method of lifting the blade in the wind turbine generator according to claim 1,
The oil controller is
It consists of a bypass passage that supplies oil in front of the piston of the cylinder to the rear of the piston and a controller provided in the bypass passage.In order to equalize the volume ratio of the front and rear of the piston, air is supplied to the rear of the piston as necessary. It is characterized by being capable of being supplied.

The invention according to claim 3 of the present invention is
In the method of lifting the blade in the wind turbine generator according to claim 1,
The transmitter is
It is a handy type.

The invention according to claim 4 of the present invention is
In the method of lifting the blade in the wind turbine generator according to claim 1,
The tilt indicator lamp is
It is interlocked with a servo-type inclinometer using a high-precision magnetic sensor provided on the frame main body.

Further, the invention according to claim 5 of the present invention is
A frame main body having a U-shaped cross section, having a blade holding part formed by opening the front part and the left and right side parts;
The base end of the cylinder is provided obliquely downward on the left and right and the center of the lower end of the triangular plate that is attached to the hook of the crane at one end, and the tip of the piston rod of each cylinder And a lifting member provided with a base end portion of a rope having a required length,
Each cylinder constituting the lifting member includes an oil controller including a bypass passage and a controller for supplying oil in front of the piston to the rear of the piston, and
The tip of the rope connected to each cylinder arranged on the left and right is at the left and right ends of the upper part of the front edge side of the frame main body, and the tip of the rope connected to the cylinder arranged at the center is the upper part of the frame main body. Are attached to the rear end of the center of the
One of the tilt indicator lamp that displays the tilt in the front-rear direction disposed on the outer side surface portion of the frame main body and the tilt indicator lamp that displays the tilt in the left-right direction disposed on the bottom surface portion side and Or, when the lamp is lit in conjunction with an inclinometer that operates when it is tilted beyond a preset angle as it is tilted left and right, the transmitter sends a signal to the oil controller of the cylinder that you want to operate from the ground. The oil in front of the piston of the cylinder is released to the rear of the piston, the piston rod is extended downward, and the length of the rope connected to the piston rod is substantially extended to keep the frame main body in a horizontal state at all times. This is a blade lifting device in a wind power generation facility.

The invention according to claim 6 of the present invention provides
In the blade lifting device in the wind power generation facility according to claim 5,
The frame subject is:
The bottom surface has a pair of left and right cradles for holding the blade at a predetermined height.

The invention according to claim 7 of the present invention provides
In the blade lifting device in the wind power generation facility according to claim 6,
The frame subject is:
Above each of the cradles, at least one clamp member that is operated by a hydraulic cylinder is disposed to press and hold the blade from above.

The invention according to claim 8 of the present invention provides
In the blade lifting device in the wind power generation facility according to claim 5,
The frame subject is:
At least one of the left and right outer surface portions is provided with a pair of front and rear tilt indicator lamps that are linked to an inclinometer for detecting the front and rear tilt of the frame main body, and the lower portion detects the left and right tilt of the frame main body. A pair of left and right tilt indicator lamps which are respectively interlocked with the inclinometer are arranged.

The invention according to claim 9 of the present invention provides
In the lifting device of the blade in the wind power generation facility according to any one of claims 5 to 8,
The frame subject is:
It has a rope fixing member for fixing the tip portions of a pair of left and right ropes connected to a cylinder for adjusting right and left inclinations at a predetermined position on the upper part thereof.

  The method of lifting the blade in the wind power generation facility according to the present invention is such that when the frame main body holding and fixing the blade to be lifted is lifted in an upright state using three ropes, the horizontal tilt inclination display provided on the frame main body is provided. While observing the lamps and the front / rear tilt indicator lamps from the ground, by turning on each tilt indicator lamp, a signal is transmitted from the ground to the cylinder oil controller that requires tilt adjustment and operated. By moving the oil in the cylinder from the front of the piston to the rear side of the piston through the bypass, and extending the piston rod downward, the rope is substantially extended to the proper length and tilted. Can be eliminated.

  As a result, the frame main body that holds the blade can always be held horizontally by the three ropes, so that stable lifting is possible and this state can always be held. The attachment / detachment work can be easily performed.

The blade lifting device in the wind power generation facility of the present invention includes a frame main body for fixing and holding the blade, three ropes for lifting the frame main body, one end on each rope, and the other end on a crane hook. And a cylinder provided with an oil controller, and a tilt indicator lamp that displays front and rear and left and right tilts.
Therefore, the mechanism of the lifting device is greatly simplified, the horizontal state of the lifting member can be always seen from the ground, and the oil controller attached to each cylinder is controlled from the ground by lighting the tilt indicator lamp that indicates the appearance of tilt. The length of the rope can be adjusted by the downward extension of each piston rod so that the frame main body can always be in a horizontal state.

It is the front schematic which shows an example of the lifting device of the blade in the wind power generation equipment concerning this invention. It is a schematic side view which shows a use condition. It is an enlarged side view of the principal part in FIG. It is a schematic explanatory drawing which shows the structure of the piston in the lifting device of the braid | blade in the wind power generation equipment of this invention.

Hereinafter, an example of a blade lifting device in a wind power generation facility according to the present invention will be specifically described with reference to the accompanying drawings.
In addition, this invention is not limited only to an Example, In the range which does not change a summary, it can change variously.

  The blade lifting device 1 in the wind power generation facility of the present invention basically includes a frame main body 2 for fixing and holding a large-sized blade (length exceeding about 30 m) constituting the wind power generation facility, and the frame. The lifting member 20 for lifting the main body 2 is configured.

  As is clear from FIG. 3, the frame main body 2 is formed with a blade holding portion 3 having a U-shaped cross section by opening the front surface portion and the left and right side surface portions. It is arranged on the left and right with the required spacing.

  The cradle 4 is for fixing the blade 3 to be mounted at a predetermined height position. The optimum height is the clamp 6 of the clamp member 5 for suppressing the upper surface of the blade B to be mounted. , 6 is a height that can sufficiently contact the upper surface of the blade B, and the height is adjusted in advance corresponding to the blade to be lifted.

As is apparent from FIG. 3, the clamp member 5 is disposed on the upper portion of the frame main body 2 facing the cradle 4.
That is, the base end portion of the rod 5a having a required length is held by the rear end portion of the frame main body 3 so as to be movable up and down, and the side surface in the vicinity of the front end portion of the rod 5a is opposed to the front and rear direction. Different clamps 6 and 6 are provided so as to be swingable in the vertical direction.

A cylinder 7 for pressing the rod 5a toward the blade B is attached to the upper surface near the tip of the rod 5a.
After the clamps 6 and 6 are sufficiently in contact with the upper surface portion of the blade B, the cylinder 7 is operated to push the rod 5a toward the bottom side, thereby fixing and holding the blade B in the blade holding portion 3. .

  Basically, one clamp member 5 is arranged on the left and right sides. However, since the cross-sectional shape of the blade B itself is not uniform, as shown in FIG. It is preferable to install.

In addition, the frame main body 2 is rotatably mounted with blade protection members 8, 8 made of a pair of tires so that a part of the frame main body 2 protrudes slightly into the blade holding portion 3. Has been.
The blade protection member 8 prevents the blade 3 from being damaged when the blade B is inserted into the blade holder 3, and the edge of the blade holder 3 formed on the frame main body 2 abuts the blade 3. Is for.

  Further, as is apparent from FIG. 1, the frame main body 2 has tilt display lamps 9 and 9 for displaying left and right tilts inside the cradles 4 and 4 and on the lower rear part of the frame main body 2, respectively. Are disposed at a required interval, and tilt indicator lamps 10 and 10 for displaying a front / rear tilt with a distance in the front / rear direction below the left and right outer surfaces are provided with the required interval. Are arranged.

Each of these tilt indicator lamps 9 and 10 is linked to a turbo-type inclinometer (not shown) using a high-precision magnetic sensor, for example, which is disposed on the frame main body 2 in the vicinity of the tilt indicator lamps 9 and 10. To do.
In this inclinometer, when the frame main body 2 inclines in any direction more than a preset angle (3 to 5 degrees, more preferably 3 degrees), the inclinometer is activated and analog voltage is output. The tilting indicator lamp 9 or 10 is turned on to notify the worker waiting on the ground that the frame main body 2 is not in a horizontal state.

  Note that the cylinder attached to the frame main body 2 and the inclinometer are all controlled by a control panel 11 provided on the rear surface of the frame main body 2.

  On the other hand, the lifting member 20 is composed of three cylinders 21, 22, 23 and steel ropes 24, 25, 26 of a required length connected to the tip ends of the piston rods of the cylinders 21, 22, 23. It is configured.

The base ends of the cylinders 21, 22, and 23 are fixed along the lower edge of a triangular plate 27 that is connected to a hook (not shown) of a crane (not shown).
The cylinders 21 and 23 arranged on the left and right are for adjusting the left and right inclination of the frame main body 2, and the cylinder 22 arranged at the center is for adjusting the front and rear inclination of the frame main body 2. is there.

The cylinders 21 and 23 for adjusting the left and right inclinations are fixed at the bases of the cylinders 21 and 23 so that the cylinders 21 and 23 extend obliquely downward from the tops of the plates 27, respectively.
In addition, the cylinder 22 for adjusting the front / rear inclination has a base end fixed to the central portion of the lower side of the plate 27 so as to extend obliquely rearward and rearward. 27 may be the front part or the rear part.
In short, it is sufficient that these three cylinders 21, 22, and 23 are arranged so as to stand upright.

As shown in FIG. 4, each of these cylinders 21 (22, 23) has a bypass passage for releasing oil in front of the piston 22 to which the base end portion of the piston rod 21 b is fixed to the rear of the piston 22. An oil controller 28 composed of 28a and a controller 28b provided in the bypass path 28a is attached.
Therefore, when the controller 28b is operated, a check valve (not shown) provided in the bypass passage 28a is opened, and the oil in front of the piston 22 flows into the rear side of the piston 22, and as a result, the piston rod 21 is oiled. Accordingly, the rope 24 connected to the piston rod 21b extends substantially by the extension of the piston rod 21b.

  A transmitter (not shown) that transmits a signal to the controller 28b and is carried by a worker on the ground tilts the frame main body 2 in the left-right direction or the front-rear direction by turning on the tilt indicator lights 9 or 10. In order to correct the right / left or forward / backward inclination, the signal is sent to the controller 28b, and the oil controller 28 is activated by the signal from the transmitter to open the bypass 28a. It is.

  The tip portions of the ropes 24 and 26 connected to the cylinders 21 and 23 are connected to the frame main body 2 directly or via a rope fixing member 29 attached to the upper portion of the frame main body 2. is there.

  Further, below the left and right outer sides of the frame main body 2, auxiliary frames 11 and 11 having an L-shaped cross section for protecting the body portion of the blade B protruding from the left and right outer surfaces of the frame main body 2, the bottom surface portion of which is the floor Are provided in parallel.

  The blade lifting device 1 in the wind power generation facility having such a configuration is used according to the following usage to lift the blade B up to a predetermined height while maintaining the horizontal state.

  First, the left and right cradle 4 arranged below the frame main body 2 is set to a position corresponding to the size of the blade B, and the clamp member 5 is on standby above the blade holding portion 3 having a U-shaped cross section. Let

Then, using a crane or the like, as shown in FIG. 2, the blade B to be lifted is inserted into the blade holding portion 3 having a U-shaped cross section from the bulging body side, and then predetermined. Place on the cradle 4 set at a height.
Note that the height of the cradle 4 is naturally different because the cross section of the blade B is different between the left and right sides.

  Thereafter, the clamp member 5 is moved downward to bring the pair of front and rear clamps 6 and 6 into contact with the upper surface of the blade B, and the cylinder 7 is operated to press the clamp member 5 downward (blade B side). Thus, the blade B is fixedly held in the blade holding portion 3 of the frame main body 2 by the cradle 4 and the clamp member 5.

  At this time, the blade B fixedly held in the blade holding portion 3 of the frame main body 2 is basically arranged such that its center of gravity is located at the center of gravity (center) of the frame main body 2. The lengths of the ropes 24, 25, 26 for lifting are also adjusted in advance so that the frame main body 2 is balanced in the front-rear and left-right directions and can be lifted in a horizontal state.

  In such a state, when the crane is operated and the frame main body 2 starts to be lifted, the frame main body 2 in which the blade B is fixedly held by the three ropes 24, 25, 26 arranged in an upright state on the frame main body 2. Is lifted while maintaining a horizontal state.

  However, the frame main body 2 with the blade B mounted is not in a horizontal state due to various factors such as the crane's location conditions, the strength of the wind when lifting, and the deviation of the center of gravity when the blade B is mounted on the frame main body 2. In many cases, there is an inclination on either one side, or on either left or right side, and in the front-rear and left-right directions simultaneously.

  In this way, when the frame main body 2 that is being lifted is tilted in the front-rear and / or left-right direction to the extent that it is difficult to maintain the horizontal state, the tilt indicator lamp 9 or 10 at the site where the tilt occurs is displayed. Light.

  For example, in the middle of lifting the frame main body 2 with the blade B fixedly held, if there is an inclination on the left side of the frame main body 2 for some reason that makes it difficult to maintain the horizontal state, An inclinometer (not shown) arranged at a predetermined position is operated, and the left side indicator lamps 10 and 10 arranged on the lower part of the frame main body 2 (right side in FIG. 1) are turned on.

  After a worker on the ground visually confirms the lighting of the left tilt indicator lamps 10, 10 provided at the bottom of the frame main body 2, transmission at hand to the controller 28 b of the cylinder 21 that hangs the left side of the frame main body 2. When the signal is transmitted by the machine, the controller 28b is activated to open the bypass passage 28a, and the oil on the piston rod 21b side is fed to the rear side of the piston 21a through the bypass passage 28a by an amount necessary for correction.

Thus, when the oil in the cylinder 21 starts to move from the piston rod 21b side to the rear side of the piston 21a, the load of the frame main body 2 is applied to the piston rod 21b via the rope 24, so that the piston rod 21b is automatically Descends, i.e. extends.
By extension of the piston rod 21b, the length of the rope 24 is substantially extended, and when the left and right balance of the tilted frame main body 2 is restored, the bypass path 28a is automatically closed, and the movement of oil is stopped. Then, the lowering of the piston rod 21b is also stopped, and each inclination indicator lamp 10 is turned off.

  When the oil moves, air may be supplied to the rear side of the piston 21a as needed in order to make the volume ratio of the front and rear of the piston 21a equal.

  Similarly, when a tilt occurs on the right side of the frame main body 2 or in the front-rear direction, the tilt in the left-right and / or front-rear direction is corrected by the above-described procedure, and the frame main body 2 is always lifted while being held in a horizontal state. B is attached to the nacelle at the top of the tower.

  When the blade B fixed to the nacelle is replaced using the lifting device 1, the blade holding portion 3 of the frame main body 2 that is lifted with the blade B held substantially parallel to the ground surface. After the blade B is inserted and fixed therein, when the balance is lost in the front and rear and / or left and right when suspended, the balance can be corrected by the above method and the blade B can be lowered to the ground surface.

  In addition, the cylinder in which the oil has been moved is for extracting oil supplied to the back side of the piston on the ground, supplying new oil to the piston rod side, and returning to the original state.

The blade lifting device 1 in the wind power generation facility according to the present invention has a cylinder arranged at one end of a rope that lifts the frame main body 2, and oil in the cylinder is transferred from the piston rod side to the back side of the piston. A flow oil controller is attached, and the length of the rope can be substantially adjusted according to the descending amount of the piston rod, so that the inclination of the main frame can be corrected. The main body of the frame for fixing and holding a large blade can be lifted while always maintaining a horizontal state without requiring a special device.
Moreover, since all the operations can be carried out by visual observation by workers on the ground, the operation is highly safe.

In the blade lifting device in the wind power generation facility of the present invention, the piston rod of the cylinder for adjusting the length of the rope can be controlled by an oil controller attached to the cylinder. Since it can be performed with the transmitter which has, it can be applied not only to the blades of wind power generation equipment but also to lifting other heavy objects.

DESCRIPTION OF SYMBOLS 1 Blade lifting apparatus in wind power generation equipment 2 Frame main body 3 Blade holding part 4 Blade receiving base 5 Clamp member 6 Clamp 7 Cylinder cylinder 8 Blade protection member 9, 10 Tilt indicator lamp 11 Auxiliary frame 20 Lifting member 21- 23 Cylinder 24-26 Rope 27 Plate 28 Oil controller 28a Bypass 28b Controller

Claims (9)

A frame main body having a U-shaped cross-section for holding a blade by opening the front and left and right side portions;
A pair of left and right slope adjustment ropes each having one end fixed to the left and right upper front edges of the frame main body, and a front and rear inclination adjustment having one end fixed to the upper rear of the center of the frame main body The other end of each of the ropes for adjusting the right and left inclination is a cylinder extending downward and obliquely provided on the left and right sides of the lower end of a triangular plate connected to the hook part of the crane. For the piston rod, the other end of the rope for adjusting the forward / backward tilt uses a lifting member fixed to the piston rod of the cylinder extending obliquely downward from the center of the lower end of the plate. ,
After inserting the center of gravity of the blade to be lifted into the frame main body blade holding part from the spindle-shaped body part side, and placing the blade on the cradle disposed at the bottom of the frame main body,
The upper surface portion of the blade is pressed by a clamp member interlocked with a hydraulic cylinder disposed on the upper portion of the frame main body facing the cradle, and the blade is fixed and held in the frame main body,
Lifting the lifting member linked to the frame main body with the blade fixed, using a crane in an upright state,
In the middle of the lifting, while viewing the tilt indicator lamps disposed on the lower left and right of the frame main body and the tilt indicator lamps for detecting the front and rear tilt disposed on the lower outer surface, from below,
Oil attached to a cylinder associated with a rope whose length needs to be adjusted when one of the tilt indicator lights is lit by a signal from an inclinometer that operates when the frame main body is tilted more than a preset angle. A rope connected to this piston rod by transmitting a signal from the transmitter on the ground to the controller, allowing the oil in front of the piston of the cylinder to escape to the rear of the piston of the cylinder through the bypass, and extending the piston rod downward. The method of lifting a blade in a wind power generation facility is characterized in that the length of the main body is substantially extended, so that the frame main body is always held in a horizontal state. The oil controller is
It consists of a bypass passage that supplies oil in front of the piston of the cylinder to the rear of the piston and a controller provided in the bypass passage.In order to equalize the volume ratio of the front and rear of the piston, air is supplied to the rear of the piston as necessary. The blade lifting method for a wind turbine generator according to claim 1, wherein the blade can be supplied. The transmitter is
The method of lifting a blade in a wind power generation facility according to claim 1, wherein the method is a handy type. The tilt indicator lamp is
The method of lifting a blade in a wind power generation facility according to claim 1, wherein the method is interlocked with a servo-type inclinometer using a high-precision magnetic sensor provided in the frame main body. A frame main body having a U-shaped cross section, having a blade holding part formed by opening the front part and the left and right side parts;
The base end of the cylinder is provided obliquely downward on the left and right and the center of the lower end of the triangular plate that is attached to the hook of the crane at one end, and the tip of the piston rod of each cylinder And a lifting member provided with a base end portion of a rope having a required length,
Each cylinder constituting the lifting member includes an oil controller including a bypass passage and a controller for supplying oil in front of the piston to the rear of the piston, and
The tip of the rope connected to each cylinder arranged on the left and right is at the left and right ends of the upper part of the front edge side of the frame main body, and the tip of the rope connected to the cylinder arranged at the center is the upper part of the frame main body. Are attached to the rear end of the center of the
One of the tilt indicator lamp that displays the tilt in the front-rear direction disposed on the outer side surface portion of the frame main body and the tilt indicator lamp that displays the tilt in the left-right direction disposed on the bottom surface portion side and Or, when the lamp is lit in conjunction with an inclinometer that operates when it is tilted beyond a preset angle as it is tilted left and right, the transmitter sends a signal to the oil controller of the cylinder that you want to operate from the ground. The oil in front of the piston of the cylinder is released to the rear of the piston, the piston rod is extended downward, and the length of the rope connected to the piston rod is substantially extended to keep the frame main body in a horizontal state at all times. A blade lifting device in a wind power generation facility. The frame subject is:
6. The blade lifting device for wind power generation equipment according to claim 5, wherein a pair of left and right cradles for holding the blade at a predetermined height is provided on the bottom surface thereof. The frame subject is:
The at least one clamp member that is operated by a hydraulic cylinder is disposed above each of the cradles so as to press and hold the blades from above. apparatus. The frame subject is:
At least one of the left and right outer surface portions is provided with a pair of front and rear tilt indicator lamps that are linked to an inclinometer for detecting the front and rear tilt of the frame main body, and the lower portion detects the left and right tilt of the frame main body. 6. The blade lifting device in a wind power generation facility according to claim 5, wherein a pair of right and left tilt indicator lamps respectively interlocking with the inclinometer are arranged. The frame subject is:
9. A rope fixing member for fixing a tip portion of a pair of left and right ropes connected to a cylinder for adjusting right and left inclinations to a predetermined position at an upper portion thereof. The blade lifting device in the wind power generation facility according to any one of the above.

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