JP2017207029A - Suspended load lifting device for wind power generator and suspended load lifting method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a suspended load lifting device for a wind power generator capable of restricting the fluctuation of a suspended load when lifting the suspended load.SOLUTION: A suspended load lifting device for a wind power generator comprises: an elevator lift mechanism for lifting a suspended load; and a plurality of guide wires connected to the suspended load hung by the elevator lift mechanism. The plurality of guide wires include two guide wires, each obliquely extending with respect to a straight line, connecting the center of a tower of the wind power generator to the center of the suspended load, on both sides of the straight line in a plan view. The two guide wires are each configured to endow with a tensile force in a separating direction from the tower to the suspended load.SELECTED DRAWING: Figure 1

Description

  The present disclosure relates to a suspended load lifting apparatus and a suspended load lifting method for a wind turbine generator.

  During maintenance of the wind power generator, etc., the parts of the wind power generator can be lifted and lowered in a state where the parts of the wind power generator are suspended from the upper part of the tower of the wind power generator or the nacelle or hub provided above the tower. is there. When a suspended load such as a component is lifted and lowered from such a high place, the suspended load may swing under the influence of wind or the like. When the suspended load swings, the suspended load may collide with the tower, and the suspended load or the tower may be damaged.

  Patent Document 1 describes the use of a swing restricting device to suppress such swinging of a suspended load. This rocking | fluctuation control apparatus has a flame | frame arrange | positioned between a suspended load and a tower. The frame is engaged with a guide rail attached to the outer peripheral surface of the tower via an engaging portion, and a winch is attached to the frame. By adjusting the amount of wire wound by the winch, The vertical position of the frame can be adjusted. Then, a suspended load suspended from a high place is surrounded by a frame, and the frame moves in the vertical direction along the guide rail in accordance with the movement of the suspended load that is lifted and lowered by the lifting device.

JP 2014-208989 A

According to the swing regulating device described in Patent Document 1, the suspended load is surrounded by a frame disposed between the suspended load and the tower, and is lifted and lowered in accordance with the movement of the frame along the tower. The swinging of the suspended load due to wind or the like can be suppressed.
When lifting and lowering such a suspended load, it is desired to suppress swinging of the suspended load with a simpler configuration.

  In view of the above circumstances, at least one embodiment of the present invention provides a suspended load lifting device and a suspended load lifting method for a wind power generator capable of suppressing swinging of a suspended load when lifting and lowering a suspended load. With the goal.

(1) A suspended load lifting apparatus for a wind turbine generator according to at least one embodiment of the present invention,
An elevating mechanism for elevating the suspended load;
A plurality of guide wires connected to the suspended load suspended from the lifting mechanism,
The plurality of guidewires, in a plan view, are two lines extending obliquely with respect to the straight line on both sides with respect to a straight line connecting the center of the tower of the wind turbine generator and the center of the suspended load. Including a guide wire,
Each of the two guide wires is configured to apply tension in a direction away from the tower to the suspended load.

  In the configuration of (1) above, the suspended load suspended by the elevating mechanism is connected to the suspended load, and with respect to the straight line on both sides of the straight line connecting the center of the tower and the center of the suspended load in plan view. Two guide wires extending diagonally give a tension in a direction away from the tower. Accordingly, since the movement of the suspended load in the direction toward the tower is restricted, swinging of the suspended load in the horizontal direction can be suppressed. Therefore, according to the structure of said (1), rocking | fluctuation of a suspended load at the time of raising / lowering a suspended load with a simple structure including two guide wires can be suppressed.

(2) In some embodiments, in the configuration of (1) above,
The wind power generator is supported on the ocean by a floating body including three columns located at the apex of a virtual triangle in plan view,
The tower of the wind power generator is erected on one of the three columns,
The two guide wires are connected to a connection end to the suspended load at one end side, and are connected to two columns other than the one column among the three columns of the floating body at the other end side. Each is fixed.

  According to the configuration of (2) above, two guide wires can be installed using the column that forms the floating body on which the wind power generator is erected on the ocean. Thereby, in the floating type wind power generator in which a floating body tends to rock | fluctuate, rocking | fluctuation of a suspended load at the time of raising / lowering a suspended load with a simple structure can be suppressed.

(3) In some embodiments, in the above configuration (1) or (2),
The lifting mechanism is
A main wire for suspending the suspended load;
A winch for winding the main wire;
including.

  According to the configuration of (3) above, the suspended load can be raised and lowered with a simple configuration by adjusting the winding amount of the main wire by the winch.

(4) In some embodiments, in any one of the above configurations (1) to (3),
It further includes at least one regulating wire for regulating the distance of the suspended load from the tower within a predetermined value.

  According to the configuration of (4) above, since the maximum distance of the suspended load from the tower is restricted by the restriction wire, for example, even if the tension due to the guide wire becomes excessively large, the suspended load is predetermined. Do not leave the tower beyond the distance. Therefore, the suspended load can be efficiently raised and lowered along the tower.

(5) In some embodiments, in the configuration of (4) above,
The at least one regulating wire is
A first restriction wire connected to the suspended load and provided to surround the tower is included.

  According to the configuration of (5) above, the maximum distance of the suspended load from the tower is regulated with a simple configuration using a first regulating wire that is connected to the suspended load and is provided to surround the tower. The distance of the suspended load from the tower can be regulated within a predetermined value. Thereby, a suspended load can be efficiently raised / lowered along a tower.

(6) In some embodiments, in the above configuration (4) or (5),
The at least one regulating wire is
One end is fixed to the lower part of the tower, and includes a second regulating wire configured to apply tension to the suspended load in a direction toward the tower, contrary to the two guide wires.

  According to the configuration of (6) above, by using the second restriction wire having one end fixed to the lower portion of the tower, tension is applied to the suspended load in the direction toward the tower as opposed to the two guide wires. Can do. As a result, the distance of the suspended load from the tower can be regulated within a predetermined value (that is, the maximum distance from the suspended load tower can be regulated), and the suspended load can be efficiently moved along the tower. Can be moved up and down.

(7) In some embodiments, in any one of the configurations (1) to (6) above,
It further includes at least one elastic member positioned between the suspended load and the tower.

According to the configuration of (7) above,
The elastic force based on the deformation of the elastic member can absorb the swaying of the suspended load caused by the wind or the like, or can buffer the impact when the suspended load and the tower collide. Moreover, according to the structure of said (7), since an elastic member is located between a suspended load and a tower, a suspended load will be located in some distance from a tower. Therefore, for example, when the lifting mechanism includes a main wire and a winch, it is easy to obtain a horizontal component of the tension according to the inclination angle of the main wire with respect to the vertical direction. A force to press against the tower can be applied. Therefore, the swinging of the suspended load can be effectively suppressed.

(8) In some embodiments, in the configuration of (7) above,
The at least one elastic member is
One or more tires for traveling on the outer peripheral surface of the tower are provided on a carriage on which the suspended load is mounted.

  According to the configuration of (8) above, a simple configuration using tires absorbs the vibration of the suspended load caused by wind or the like, or buffers the impact when the suspended load collides with the tower. Can do. For example, when the lifting mechanism includes a main wire and a winch, it is easy to obtain a horizontal component of the tension according to the inclination angle of the main wire with respect to the vertical direction, so the suspended load is pressed against the suspended load against the tower. Force can be applied. Therefore, the swinging of the suspended load can be effectively suppressed.

(9) In some embodiments, in the above configuration (7) or (8),
The at least one elastic member is
It includes a pair of first elastic members provided on both sides of the straight line in plan view.

  According to the configuration of (9) above, since the pair of first elastic members are provided on both sides across the straight line connecting the center of the tower and the center of the suspended load, the suspension caused by wind or the like is more stable. It can absorb the shaking of the load, and can buffer the impact when the suspended load collides with the tower. For example, when the lifting mechanism includes a main wire and a winch, the horizontal component of the tension according to the inclination angle of the main wire with respect to the vertical direction can be obtained more stably. It is possible to more stably apply the force of pressing to. Therefore, the swinging of the suspended load can be effectively suppressed.

(10) In some embodiments, in any one of the above configurations (7) to (9),
Each of the elastic members is arranged to receive a compressive force in a direction from the suspended load toward the center of the tower.

  According to the configuration of the above (10), each elastic member receives a compressive force in a direction from the suspended load toward the center of the tower, and thus efficiently absorbs the swing of the suspended load caused by the wind or the like, It is possible to buffer the impact when the suspended load and the tower collide. For example, when the lifting mechanism includes a main wire and a winch, the horizontal component of the tension according to the inclination angle of the main wire with respect to the vertical direction can be efficiently obtained. The pressing force can be efficiently applied. Therefore, the swinging of the suspended load can be effectively suppressed.

(11) In some embodiments, in any one of the above configurations (7) to (10),
The at least one elastic member is
It includes a pair of second elastic members provided on both sides across the vertical center position of the suspended load.

  According to the configuration of (11) above, since the pair of second elastic members are provided on both sides across the vertical center position of the suspended load, the suspended load caused by wind or the like can be more stably absorbed. Or the shock when the suspended load collides with the tower can be buffered. For example, when the lifting mechanism includes a main wire and a winch, the horizontal component of the tension according to the inclination angle of the main wire with respect to the vertical direction can be obtained more stably. It is possible to more stably apply the force of pressing to. Therefore, the swinging of the suspended load can be effectively suppressed.

(12) A suspended load lifting method for a wind turbine generator according to at least one embodiment of the present invention,
A suspension step for suspending a suspended load on the lifting mechanism;
A guide wire connecting step of connecting a plurality of guide wires to the suspended load suspended from the lifting mechanism;
An elevating step for elevating and lowering the suspended load to which the plurality of guide wires are connected by the elevating mechanism,
The plurality of guidewires, in a plan view, are two lines extending obliquely with respect to the straight line on both sides with respect to a straight line connecting the center of the tower of the wind turbine generator and the center of the suspended load. Including a guide wire,
In the lifting / lowering step, the suspended load is lifted / lowered by applying tension in a direction away from the tower to the suspended load by the two guide wires.

  In the above method (12), the suspended load suspended by the elevating mechanism is connected to the suspended load, and with respect to the straight line on both sides of the straight line connecting the center of the tower and the center of the suspended load in plan view. Two guide wires extending diagonally give a tension in a direction away from the tower. Accordingly, since the movement of the suspended load in the direction toward the tower is restricted, swinging of the suspended load in the horizontal direction can be suppressed. Therefore, according to the above method (12), it is possible to suppress the swinging of the suspended load when the suspended load is lifted and lowered with a simple configuration including two guide wires.

(13) In some embodiments, in the method of (12) above,
The wind power generator is supported on the ocean by a floating body including three columns located at the apex of a virtual triangle in plan view,
The tower of the wind power generator is erected on one of the three columns,
The two guide wires are connected to the suspended load at one end side, and fixed to two columns other than the one column among the three columns of the floating body at the other end side. Yes.

  According to the above method (13), two guide wires can be installed by using the column constituting the floating body on which the wind turbine generator is erected on the ocean. Thereby, in the floating type wind power generator in which a floating body tends to rock | fluctuate, rocking | fluctuation of a suspended load at the time of raising / lowering a suspended load with a simple structure can be suppressed.

(14) In some embodiments, the method of (12) or (13) is
A regulation wire connecting step of connecting at least one regulation wire to the suspended load;
In the raising / lowering step, the suspended load is raised and lowered while the distance of the suspended load from the tower is regulated within a predetermined value by the at least one regulating wire.

  According to the above method (14), since the maximum distance of the suspended load from the tower is regulated by the regulating wire, for example, even when the tension by the guide wire becomes excessively large, the suspended load is predetermined. Do not leave the tower beyond the distance. Therefore, the suspended load can be efficiently raised and lowered along the tower.

(15) In some embodiments, in any one of the methods (12) to (14),
In the raising / lowering step, the suspended load is raised and lowered in a state in which the suspended load is pressed against the outer peripheral surface of the tower via at least one elastic member.

  According to the above method (15), the elastic force based on the deformation of the elastic member absorbs the swaying of the suspended load caused by the wind or the like, or the impact when the suspended load and the tower collide is buffered. can do. In addition, according to the method (15), since the elastic member is located between the suspended load and the tower, the suspended load is located some distance away from the tower. Therefore, for example, when the lifting mechanism includes a main wire and a winch, it is easy to obtain a horizontal component of the tension according to the inclination angle of the main wire with respect to the vertical direction. A force to press against the tower can be applied. Therefore, the swinging of the suspended load can be effectively suppressed.

  According to at least one embodiment of the present invention, there are provided a suspended load lifting apparatus and a suspended load lifting method for a wind power generator capable of suppressing swinging of a suspended load when lifting and lowering a suspended load.

It is a perspective view which shows the structural example of the floating body type wind power generator to which the hanging load raising / lowering apparatus which concerns on one Embodiment was applied. It is the schematic block diagram which looked at the wind power generator to which the hanging load raising / lowering device which concerns on one Embodiment was applied from the side surface. It is the schematic block diagram which planarly viewed the wind power generator to which the suspended load raising / lowering device which concerns on one Embodiment was applied. It is the schematic block diagram which looked at the wind power generator to which the hanging load raising / lowering device which concerns on one Embodiment was applied from the side surface. It is the schematic block diagram which looked at the wind power generator to which the hanging load raising / lowering device which concerns on one Embodiment was applied from the side surface. It is a figure which shows the top view of the hanging load raising / lowering apparatus shown in FIG. 5 with the cross-sectional view of a wind power generator. It is a figure for demonstrating an example of the hanging load raising / lowering method using the hanging load raising / lowering apparatus mentioned above.

  Hereinafter, some embodiments of the present invention will be described with reference to the accompanying drawings. However, the dimensions, materials, shapes, relative arrangements, etc. of the components described in the embodiments or shown in the drawings are not intended to limit the scope of the present invention, but are merely illustrative examples. Absent.

First, with reference to FIG.1 and FIG.2, the structural example of the wind power generator to which the suspended load raising / lowering apparatus which concerns on some embodiment is applied is demonstrated. FIG. 1 is a perspective view illustrating a configuration example of a floating wind power generator to which a suspended load lifting apparatus according to an embodiment is applied, and FIG. 2 is a wind turbine to which a suspended load lifting apparatus according to an embodiment is applied. It is the schematic block diagram which looked at the electric power generating apparatus from the side.
In the following description, a floating wind power generator is described as an example of the wind power generator, but the suspended load lifting apparatus according to some embodiments can also be applied to a wind power generator installed on land.

  A wind power generator 1 shown in FIGS. 1 and 2 includes a floating body 2 floating on a water surface, a tower 4 standing on the floating body 2, a nacelle 6 supported on the top of the tower 4, and a nacelle 6 that is freely rotatable. It has a hub 8 attached and blades 10 attached radially to the hub 8.

  The nacelle 6 may be capable of yaw turning with respect to the tower 4, and in the case of a typical upwind wind turbine, the nacelle 6 turns so that the blade 10 is oriented to the windward side according to the wind direction. Yes. Then, the blade 10 and the hub 8 that have received the wind rotate to generate power by the generator. A specific configuration example in the nacelle 6 will be described later.

  In one embodiment, the floating body 2 has three columnar columns 21, 22, and 23 arranged at the vertex positions of the virtual triangle in plan view. The floating body 2 includes a long first lower hull 25 that connects the first column 21 and the second column 22, and a long second lower hull 26 that connects the first column 21 and the third column 23. Have. The floating body 2 is formed in a substantially V shape in plan view by the three columns 21, 22 and 23 and the two lower halves 25 and 26. And the platform 28 is provided in the upper surface of the 1st column 21 located in the center of a substantially V shape in planar view, and the wind power generator 1 mentioned above is installed on the platform 28. FIG.

The first lower hull 25 and the second lower hull 26 may intersect at right angles, and a virtual right-angled isosceles triangle that is symmetrical with respect to the bisector of the intersection angle between the first lower hull 25 and the second lower hull 26 The above-mentioned three columns 21, 22, and 23 may be arranged at the apex position. Further, although not particularly illustrated, a third lower hull for connecting the second column 22 and the third column 23 may be further included. Furthermore, the 1st lower hull 25 and the 2nd lower hull 26 may be connected by the beam member for reinforcement.
In the above-described embodiment, the lower hulls 25 and 26 are illustrated as connecting portions that connect the first column 21 and the second column 22, and the first column 21 and the third column 23, respectively, but the connecting portions are limited to this. It is not a thing.

  Further, as shown in FIG. 1, the floating body 2 may be arranged such that the first column 21 on which the tower 4 is installed is positioned on the windward side with respect to the main wind direction W. In that case, the second column 22 and the third column 23 are arranged so as to be located on the leeward side of the main wind direction W with respect to the first column 21. Thus, by arranging the first column 21 in which the tower 4 is installed so as to be located on the windward side of the main wind direction W, the stability of the tower 4 that is inclined to the rear side under the wind load is improved. Can be raised.

  As shown in FIG. 2, in one embodiment, the wind turbine generator 1 transmits a rotating shaft 11 connected to the hub 8, a generator 12 that generates electric power, and rotational energy of the rotating shaft 11 to the generator 12. Drive train 13. In the figure, as an example, the drive train 13 and the generator 12 are arranged in the nacelle 6, but at least one of them may be arranged on the tower 4 side.

  The rotating shaft 11 rotates together with the rotor 7 composed of the blade 10 and the hub 8. The hub 8 may be covered with a hub cover (spinner). The rotating shaft 11 is supported by the nacelle 6 so as to be rotatable through a pair of bearings (not shown).

  The drive train 13 includes a hydraulic pump 14 attached to the rotary shaft 11 and a hydraulic motor 15 connected to the hydraulic pump 14 via a high pressure oil line 16 and a low pressure oil line 17. The hydraulic pump 14 is driven by the rotary shaft 11 to increase the pressure of the hydraulic oil and generate high-pressure hydraulic oil (pressure oil). The pressure oil generated by the hydraulic pump 14 is supplied to the hydraulic motor 15 via the high-pressure oil line 16, and the hydraulic motor 15 is driven by this pressure oil. The low-pressure hydraulic oil after the work is performed by the hydraulic motor 15 is returned again to the hydraulic pump 14 via the low-pressure oil line 17. The output shaft of the hydraulic motor 15 is connected to the input shaft of the generator 12, and the rotation of the hydraulic motor 15 is input to the generator 12.

  In the figure, a configuration using a hydraulic transmission as the drive train 13 is illustrated. However, the present invention is not limited to this configuration, and other drive trains such as a gear type gearbox may be used. A configuration in which the hub 8 or the rotating shaft 11 and the generator 12 are directly connected without providing the power supply 13 may be used.

Hereinafter, a suspended load lifting apparatus according to some embodiments and a suspended load lifting method of a wind turbine generator using the suspended load lifting apparatus will be described.
Here, FIG. 3 is a schematic configuration diagram in plan view of the wind power generator to which the suspended load lifting apparatus according to the embodiment is applied. 4 and 5 are schematic configuration diagrams of a wind power generator to which a suspended load lifting apparatus according to an embodiment is applied, as viewed from the side.

  The suspended load lifting / lowering device 100 according to some embodiments is provided on the tower 4 using, for example, various components of the wind power generator 1 described above as the suspended load 3 during maintenance, installation, or disassembly of the wind power generator 1. It is the raising / lowering apparatus for moving to an up-down direction along.

  1 to 3, 4, and 5, a lifting / lowering apparatus 100 for lifting / lowering a suspended load 3 and a plurality of ( 1 to 3, 4, and 5, two guide wires 40 </ b> A and 40 </ b> B are provided.

The elevating mechanism 30 includes a main wire 32 for suspending the suspended load 3 and a winch 34 for winding the main wire 32. In the state where the suspended load 3 is suspended by the main wire 32, the suspended load 3 can be raised and lowered by adjusting the winding amount of the main wire 32 by the winch 34.
The winch 34 may be configured to be driven by a motor (not shown) to wind up the main wire 32.
The winch 34 may be provided inside the nacelle 6 as shown in FIG. 2, FIG. 4 or FIG. 5, or may be provided inside the tower 4.

Two guide wires 40A, 40B are, in plan view, in both sides of the straight line L ₁ connecting the center C of the load 3 hanging the center O of the tower 4 of the wind turbine generator 1, with respect to the straight line L ₁ Each of them extends diagonally. The two guide wires 40 </ b> A and 40 </ b> B are each configured to give a tension T ₁ in a direction away from the tower 4 to the suspended load 3.
Here, the tension T ₁ may be a resultant force of the tension T _1A by the guide wire 40A and the tension T _1B (see FIG. 3) by the guide wire 40B.

In the example shown in FIGS. 1 to 3, 4, and 5, the two guide wires 40 </ b> A and 40 </ b> B are connected to the suspended load 3 on one end side, and the columns 21 and 22 of the floating body 2 on the other end side. , 23, the tower 4 of the wind turbine generator 1 is fixed to a second column 22 and a third column 23, which are columns other than the first column 21 provided upright.
Winches 42A and 42B are provided on the upper surfaces of the second column 22 and the third column 23, respectively, on the other end side opposite to the one end side connected to the suspended load 3 of the guide wires 40A and 40B. The guide wires 40A and 40B may be wound up respectively. The winch 42A, 42B by the guide wire 40A, by adjusting the winding amount of 40B, the guide wire 40A, may be adapted produce moderately tension _{T 1} to be supplied to the load 3 hanging from 40B.

According to the above-described suspended load lifting apparatus 100, the suspended load 3 suspended by the lifting mechanism 30 is connected to the suspended load 3 on one end side, and the center O of the tower 4 and the center of the suspended load 3 in plan view. two guide wires 40A extending obliquely to the straight line _{L 1} on both sides of the straight line _{L 1} connecting the C, by 40B, it is tensioned _{T 1} of the direction away from the tower 4. Thereby, since the movement to the direction of the tower 4 of the suspended load 3 is controlled, the rocking | swiveling of the suspended load 3 in the horizontal direction can be suppressed. Therefore, according to the above-described suspended load lifting / lowering apparatus 100, swinging of the suspended load 3 when lifting / lowering the suspended load 3 can be suppressed with a simple configuration including the two guide wires 40A and 40B.
In addition, by applying the above-described suspended load lifting device 100 to the floating wind power generator as the wind power generator 1, in the floating wind power generator in which the floating body 2 easily swings due to the influence of waves and tidal currents, The suspended load 3 can be raised and lowered.

Moreover, the tower 4 of the wind power generator 1 usually has a shape that increases in diameter as it goes downward. Therefore, if the suspended load lifting apparatus 100 does not have the guide wires 40A and 40B, when the suspended load 3 is lowered from the opening / closing portion 6a of the nacelle 6, as shown by a two-dot chain line in FIG. The load 3 ′ may come into contact with the tower 4 and the suspended load 3 ′ or the tower 4 may be damaged.
In this respect, according to the suspended load lifting apparatus 100 described above, suspended load 3 which is suspended from the lifting mechanism 30, two guide wires 40A, the 40B, it is applied to the direction of the tension T ₁ away from the tower 4 . Thereby, the movement of the suspended load 3 in the direction toward the tower 4 is restricted, and the contact between the suspended load 3 and the tower 4 can be suppressed.

  As the suspended load 3 lifted / lowered by the lifting / lowering mechanism 30 in the present embodiment, for example, each component (hydraulic pump 14, hydraulic motor 15, etc.) of the drive train 13 disposed in the inner space of the nacelle 6 as described above, or a generator In addition to 12, various parts such as blades 10, various parts constituting the nacelle 6, electric devices such as a transformer and a control panel can be mentioned. Alternatively, the suspended load 3 may be various components arranged in the upper space of the tower 4. Further, the suspended load 3 may be a component used during maintenance.

  In the example shown in FIGS. 2, 4, and 5, an opening / closing part 6 a is provided on the bottom surface of the nacelle 6 in order to move the suspended load 3 between the internal space of the nacelle 6 and the outside. In some embodiments, in order to move the suspended load 3 between the internal space of the nacelle 6 or the internal space of the hub 8 and the outside, an opening / closing portion is provided on the bottom surface, side surface, or top surface of the nacelle 6 or the hub 8. It may be done.

In some embodiments, the lifting / lowering device 100 has at least one restriction wire for restricting the distance of the suspended load 3 from the tower 4 within a predetermined value (ie, the maximum of the suspended load 3 from the tower 4). At least one regulating wire for regulating the distance.
For example, in the embodiment shown in FIGS. 1 to 3, the suspended load lifting apparatus 100 includes a first restriction wire 44 that is connected to the suspended load 3 and is provided so as to surround the tower 4 as a restriction wire.
Further, for example, in the exemplary embodiment shown in FIG. 4, the suspended load lifting apparatus 100 has a second restriction wire 46 having one end fixed to the lower portion of the tower 4 as the restriction wire. The second restriction wire 46 can be wound up by, for example, a winch 48 provided at the lower portion of the tower 4, whereby the second restriction wire 46 is a tower opposite to the two guide wires 40 </ b> A and 40 </ b> B. The tension T ₂ in the direction toward 4 can be applied to the suspended load 3.

Thus, according to the suspended load lifting apparatus 100 having the first restriction wire 44 or the second restriction wire 46, the maximum distance of the suspended load 3 from the tower 4 is restricted by the first restriction wire 44 or the second restriction wire 46. Is done. Thus, for example, the guide wire 40A, even when the tension T ₁ is has become excessively large due 40B, since the suspended load 3 without departing from the tower 4 beyond a predetermined distance, the suspended load 3 to the tower 4 It can be lifted and lowered efficiently along.

FIG. 6 is a view showing a plan view of the suspended load lifting apparatus 100 shown in FIG. 5 together with a cross-sectional view of the wind turbine generator 1.
In some embodiments, the suspended load lifting apparatus 100 further includes at least one elastic member positioned between the suspended load 3 and the tower 4.
In the exemplary embodiment shown in FIGS. 5 and 6, the suspended load lifting apparatus 100 is provided as an elastic member on the carriage 52 on which the suspended load 3 is mounted, and is used for traveling on the outer peripheral surface of the tower 4. The tire 50 (50A to 50D) described above (four in the example shown in FIGS. 5 and 6) is provided.

When the suspended load lifting apparatus 100 includes an elastic member such as a tire 50 (50A to 50D) illustrated in FIGS. 5 and 6 between the suspended load 3 and the tower 4, for example, an elastic force based on deformation of the elastic member. Thus, it is possible to absorb the shaking of the suspended load 3 caused by wind or the like, or to buffer the impact when the suspended load 3 and the tower 4 collide. In this case, since the elastic member is located between the suspended load 3 and the tower 4, the suspended load 3 is located some distance away from the tower 4. Thus, for example if the lifting mechanism 30 is configured including main wires 32 and winch 34, the horizontal component of the tension T ₃ corresponding to the tilt angle α with respect to the vertical direction of the main wire 32 (the direction of the straight line Lv shown in FIG. 5) ( T ₃ × sin α) can be easily obtained, and thereby the force for pressing the suspended load 3 against the tower 4 can be applied to the suspended load 3. Therefore, the swinging of the suspended load 3 can be effectively suppressed.

In some embodiments, each of the elastic member is positioned to receive the compressive force F _C of the direction from the suspended load 3 to the center O of the tower 4.
For example, in the example illustrated in FIG. 6, each of the tires 50 </ b> A to 40 </ b> D includes a rotation surface (outer peripheral surface) of the tire 50 and the tower 4 on a straight line connecting the centers of the tires 50 </ b> A to 40 </ b> D and the center O of the tower 4. Is attached to the carriage 52 so as to be in contact with each other. Accordingly, each tire 50A~40D is compressed under compressive force _{F C} of the direction from the suspended load 3 to the center O of the tower 4.

Thus, when each elastic member receives a compressive force in a direction from the suspended load 3 toward the center of the tower 4, it efficiently absorbs the swing of the suspended load 3 caused by wind or the like. Or the shock when the suspended load 3 and the tower 4 collide can be buffered. Also, if the lifting mechanism 30, as shown in FIG. 5 is a configuration including a main wire 32 and winch 34, the tension T ₃ corresponding to the tilt angle α with respect to the vertical direction of the main wire 32 (the direction of the straight line Lv in FIG. 5) Since a horizontal direction component is obtained efficiently, the force which presses this suspended load 3 against the tower 4 with respect to the suspended load 3 can be made to act efficiently. Therefore, the swinging of the suspended load 3 can be effectively suppressed.

Of the tires 50 (50A to 50D) of the suspended load lifting apparatus 100 shown in FIGS. 5 and 6, the tire 50A and the tire 50B, and the tire 50C and the tire 50D are suspended from the center O of the tower 4 in plan view, respectively. A pair of first elastic members provided on both sides of a straight line L ₁ (see FIG. 6) connecting the center C of the load 3.

In addition, among the tires 50 (50A to 50D) of the suspended load lifting apparatus 100 illustrated in FIGS. 5 and 6, the tire 50A and the tire 50C, and the tire 50B and the tire 50D are respectively the vertical center positions of the suspended load 3. Is a pair of second elastic members respectively provided on both sides of a straight line L ₂ passing through (see FIG. 5).

Thus, a plurality of elastic members (in the example shown in FIGS. 5 and 6, tires 50 </ b> A to 50 </ b> D) sandwich a straight line L ₁ (see FIG. 6) connecting the center O of the tower 4 and the center C of the suspended load 3. And a pair of first elastic members provided on both sides, or a pair of second elastic members provided on both sides across the vertical center position of the suspended load 3 (for example, the straight line L _{2 in} FIG. 5). In particular, it is possible to absorb the sway of the suspended load caused by the wind or the like, or to buffer the impact when the suspended load 3 and the tower 4 collide. When, for example, lifting mechanism 30 is configured including main wires 32 and winch 34, the horizontal component of the tension T ₃ corresponding to the tilt angle α with respect to the vertical direction of the main wire 32 (the direction of the straight line Lv in FIG. 5) are more Since it can be obtained stably, the force for pressing the suspended load 3 against the tower 4 can be more stably applied to the suspended load 3. Therefore, the swinging of the suspended load 3 can be effectively suppressed.

  FIG. 7 is a diagram for explaining an example of a lifting / lowering method using the lifting / lowering apparatus 100 described above.

In the suspended load lifting / lowering method according to the embodiment, first, as shown in FIG. 7A, the suspended load 3 is suspended from the lifting / lowering mechanism 30 (hanging step), and the suspended load is suspended from the lifting / lowering mechanism 30. 3 are connected to the guide wires 40A and 40B (guide wire connection step).
In the suspending step, the suspended load 3 may be suspended from the lifting mechanism 30 using a device such as a crane installed in the internal space of the nacelle 6.
In the guide wire connecting step, the guide wires 40A and 40B connected to the suspended load 3 are connected to the suspended load 3 on one end side and fixed to the second column 22 and the third column 23 on the other end side. Also good. Further, the guide wires 40A and 40B can be wound up by winches 42A and 42B installed in the second column 22 and the third column 23 on the other end side opposite to the one end side connected to the suspended load 3. It may be.

  In one embodiment, at least one restriction wire may be connected to the suspended load 3 here (regulation wire connection step). In the example shown in FIG. 7, the first restriction wire 44 is connected to the suspended load 3 so as to surround the tower 4 with the first restriction wire 44.

Next, as shown in FIG. 7B, while the guide wires 40A and 40B are connected, the two guide wires 40A and 40B respectively apply tension T ₁ in the direction away from the tower 4, The suspended load 3 is moved up and down by the lifting mechanism 30 (lifting step).
In the ascending / descending step, for example, as shown in FIG. 7B, winches 42A and 42B at the end (other end side) opposite to the connecting end (one end side) of the guide wires 40A and 40B on the suspended load 3 side. guide wire 40A by, by adjusting the winding amount of 40B, it may be applied to the load 3 hanging tension T ₁ of the direction away from the tower 4.
Moreover, in the raising / lowering step, the suspended load 3 may be lowered from the upper part of the tower 4 toward the lower part of the tower 4 by feeding the main wire 32 from the winch 34 of the raising / lowering mechanism 30.

  In addition, when the above-described regulation wire connecting step is performed before the lifting step, the distance from the tower 4 of the suspended load 3 by the regulation wire (the first regulation wire 44 in the example shown in FIG. 7) in the lifting step. Is controlled within a predetermined value (that is, while the maximum distance of the suspended load 3 from the tower 4 is regulated), the suspended load 3 is moved up and down.

The suspended load lifting method described above, two guide wires 40A, the 40B, since the tension T ₁ of the direction away from the tower 4, a movement in a direction towards the tower 4 of the suspended load 3 is restricted, suspended The swing of the load 3 in the horizontal direction can be suppressed. Therefore, the swinging of the suspended load 3 when the suspended load 3 is raised and lowered with a simple configuration including the two guide wires 40A and 40B can be suppressed.

Further, as shown in FIGS. 7A and 7B, when the restriction wire (first restriction wire 44 in the example shown in FIG. 7) is used, the maximum distance of the suspended load 3 from the tower 4 is restricted by the restriction wire. since the, for example, the guide wire 40A, even when the tension T ₁ is has become excessively large due 40B, the suspended load 3 without departing from the tower 4 beyond a predetermined distance. Therefore, the suspended load 3 can be efficiently moved up and down along the tower 4.

  In the above-described lifting step, for example, as shown in FIGS. 5 and 6, the suspended load 3 is placed on the outer peripheral surface of the tower 4 via at least one elastic member (the tire 50 in the example shown in FIGS. 5 and 6). The suspended load 3 may be lifted and lowered in the pressed state.

In this case, the elastic force based on the deformation of the elastic member can absorb the swaying of the suspended load caused by the wind or the like, or can buffer the impact when the suspended load 3 and the tower 4 collide. In this case, since the elastic member is located between the suspended load 3 and the tower 4, the suspended load 3 is located some distance away from the tower 4. Thus, for example, the lifting mechanism 30 is in the configuration including the main wire 32 and winch 34, tends horizontal component of the tension T ₃ corresponding to the inclination angle α is obtained with respect to the vertical direction of the main wire 32 (see FIG. 5), Thereby, the force which presses this suspended load 3 against the tower 4 with respect to the suspended load 3 can be made to act. Therefore, the swinging of the suspended load 3 can be effectively suppressed.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to embodiment mentioned above, The form which added the deformation | transformation to embodiment mentioned above and the form which combined these forms suitably are included.

In this specification, an expression representing a relative or absolute arrangement such as “in a certain direction”, “along a certain direction”, “parallel”, “orthogonal”, “center”, “concentric” or “coaxial”. Represents not only such an arrangement strictly but also a state of relative displacement with tolerance or an angle or a distance to obtain the same function.
For example, an expression indicating that things such as “identical”, “equal”, and “homogeneous” are in an equal state not only represents an exactly equal state, but also has a tolerance or a difference that can provide the same function. It also represents the existing state.
In this specification, expressions representing shapes such as quadrangular shapes and cylindrical shapes not only represent shapes such as quadrangular shapes and cylindrical shapes in a strict geometric sense, but also within a range where the same effects can be obtained. In addition, a shape including an uneven portion or a chamfered portion is also expressed.
In this specification, the expression “comprising”, “including”, or “having” one constituent element is not an exclusive expression for excluding the existence of another constituent element.

DESCRIPTION OF SYMBOLS 1 Wind power generator 2 Floating body 3 Suspended load 4 Tower 6 Nacelle 6a Opening and closing part 7 Rotor 8 Hub 10 Blade 11 Rotating shaft 12 Generator 13 Drive train 14 Hydraulic pump 15 Hydraulic motor 16 High pressure oil line 17 Low pressure oil line 21 First column 22 Second column 23 Third column 25 First lower hull 26 Second lower hull 28 Platform 30 Lifting mechanism 32 Main wire 34 Winch 40A, 40B Guide wire 42A, 42B Winch 44 First regulating wire 46 Second regulating wire 48 Winch 50 (50A- 50D) Tire 52 Bogie 100 Lifting equipment

Claims (15)

A suspended load lifting device for a wind power generator,
An elevating mechanism for elevating the suspended load;
A plurality of guide wires connected to the suspended load suspended from the lifting mechanism,
The plurality of guidewires, in a plan view, are two lines extending obliquely with respect to the straight line on both sides with respect to a straight line connecting the center of the tower of the wind turbine generator and the center of the suspended load. Including a guide wire,
Each of the two guide wires is configured to apply a tension in a direction away from the tower to the suspended load. The wind power generator is supported on the ocean by a floating body including three columns located at the apex of a virtual triangle in plan view,
The tower of the wind power generator is erected on one of the three columns,
The two guide wires are connected to the suspended load at one end side, and fixed to two columns other than the one column among the three columns of the floating body at the other end side. The suspended load raising / lowering device for wind power generators of Claim 1 characterized by the above-mentioned. The lifting mechanism is
A main wire for suspending the suspended load;
A winch for winding the main wire;
The suspended load raising / lowering device for wind power generators of Claim 1 or 2 characterized by the above-mentioned.   The wind power generator for a wind turbine generator according to any one of claims 1 to 3, further comprising at least one regulating wire for regulating the distance of the suspended load from the tower within a predetermined value. Suspended load lifting device. The at least one regulating wire is
The suspended load lifting / lowering device for a wind turbine generator according to claim 4, further comprising a first restriction wire connected to the suspended load and provided to surround the tower. The at least one regulating wire is
One end is fixed to the lower part of the tower, and includes a second restriction wire configured to apply tension to the suspended load in a direction toward the tower, opposite to the two guide wires. Item 6. A suspended load lifting apparatus for a wind turbine generator according to Item 4 or 5.   The suspended load elevating device for a wind power generator according to any one of claims 1 to 6, further comprising at least one elastic member positioned between the suspended load and the tower. The at least one elastic member is
The suspended load lifting apparatus for a wind turbine generator according to claim 7, comprising one or more tires provided on a carriage on which the suspended load is mounted and traveling on an outer peripheral surface of the tower. The at least one elastic member is
The suspended load elevating device for a wind turbine generator according to claim 7 or 8, further comprising a pair of first elastic members provided on both sides of the straight line in plan view.   10. The wind power generator according to claim 7, wherein each of the elastic members is arranged to receive a compressive force in a direction from the suspended load toward the center of the tower. Lifting device for lifting. The at least one elastic member is
The lifting load raising / lowering for wind power generators as described in any one of Claims 7 thru | or 10 including a pair of 2nd elastic member each provided on both sides on both sides of the vertical direction center position of the said hanging load apparatus. A suspended load lifting method for a wind turbine generator,
A suspension step for suspending a suspended load on the lifting mechanism;
A guide wire connecting step of connecting a plurality of guide wires to the suspended load suspended from the lifting mechanism;
An elevating step for elevating and lowering the suspended load to which the plurality of guide wires are connected by the elevating mechanism,
The plurality of guidewires, in a plan view, are two lines extending obliquely with respect to the straight line on both sides with respect to a straight line connecting the center of the tower of the wind turbine generator and the center of the suspended load. Including a guide wire,
In the lifting / lowering step, the suspended load is lifted / lowered for the wind power generator by lifting / lowering the suspended load while applying a tension in a direction away from the tower to the suspended load by the two guide wires, respectively. . The wind power generator is supported on the ocean by a floating body including three columns located at the apex of a virtual triangle in plan view,
The tower of the wind power generator is erected on one of the three columns,
The two guide wires are connected to the suspended load at one end side, and fixed to two columns other than the one column among the three columns of the floating body at the other end side. The suspended load raising / lowering method for wind power generators of Claim 12 characterized by the above-mentioned. A regulation wire connecting step of connecting at least one regulation wire to the suspended load;
The lifting / lowering step is performed by lifting / lowering the suspended load while restricting the distance of the suspended load from the tower within a predetermined value by the at least one restriction wire. Lifting and lifting method for wind power generators.   The lifting / lowering step includes lifting / lowering the suspended load while pressing the suspended load against the outer peripheral surface of the tower via at least one elastic member. The suspended load raising / lowering method for wind power generators as described.

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