JPH10205429A - Construction method of wind power generator - Google Patents

Abstract

(57) [Problem] To construct a large-scale wind power generator exceeding 50 m even at a remote island or a mountainous area at a low cost without using expensive equipment. A temporary tower 3 is assembled upward from below using a climbing crane 2, and a nacelle 6 containing a generator is transferred upward from the ground by a lifting mechanism 5 provided at the top of the assembled temporary tower 3. After being temporarily placed on the top of the temporary tower 3, the tower is taken up by using the hoisting mechanism 7 provided on the top of the temporary tower 3.
After assembling the tower 8 from below, the nacelle 6 accommodating the generator is mounted on the upper part of the assembled tower 8 using the lifting mechanism 5, and then the temporary turret 3 is dismantled using the climbing crane 2. And a blade 10 attached thereto.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for constructing a wind power generator.

[0002]

2. Description of the Related Art A wind power generator has a structure in which a blade and a generator are integrally mounted on an upper part of a tower erected on the ground, and is often constructed on a windy remote island or a mountainous area. .

[0003] As a prior art of this method of constructing a wind power generator, Japanese Patent Application Laid-Open No. 63-124875 (prior art 1) is known.
Is disclosed.

FIG. 7 (elevation view) shows a technique disclosed in the prior art 1 in which an intermediate portion of a tower 8 is supported on a support base 11 provided on the ground 1 by a fulcrum shaft 12, while a tower 11 is provided. A nacelle 6 accommodating a generator at one end and a counterweight 13 at the other end are attached, and the tower 8 is turned in the direction of the arrow in the vertical plane by the power of the rotation device 14 with the middle part of the tower 8 as a fulcrum. This is a method of constructing a wind power generator with a small amount of power. Reference numeral 10 denotes a blade attached in a later step.

[0005] As another technique, there is known a method of assembling a tower in order from a lower part to an upper part by using a large crane and attaching a generator and blades to an upper part (prior art 2).

[0006]

However, according to the prior art 1, when the wind power generator itself has a large output, the height of the tower is increased to 50 m or more, and the generator and the blades are increased in size and weight. When the tower is raised for rotation in a vertical plane, an excessive bending momentum acts on the tower, and it is necessary to firmly manufacture a tower structure that is strong enough to operate during operation. There is a problem that the manufacturing cost of the device is higher than necessary.

Further, the prior art 2 using a large crane has a problem in transporting a large crane in a remote island or in a mountainous area where traffic access is inconvenient.

An object of the present invention is to provide a method for constructing a wind power generator at a low cost and not limited to an installation area.

[0009]

The above object is achieved by assembling a temporary turret from below using a climbing crane,
The nacelle containing the generator is transported upward from the ground by the lifting mechanism provided at the top of the assembled temporary turret, temporarily placed on the top of the temporary turret, and then turned up using the hoisting mechanism provided at the top of the temporary turret. Is assembled from the lower side to the upper side, a nacelle accommodating the generator is mounted on the upper part of the assembled tower using the lifting mechanism, and then the temporary turret is disassembled using the climbing crane, and then the blade is mounted. The problem is solved by the characteristic wind power generator construction method.

According to the present invention, the climbing crane used for assembling the temporary turret is generally used at the construction site and is available at a low cost. Therefore, the transportation cost can be reduced.

When the temporary turret is completed, a lifting mechanism is installed on the top of the temporary turret, and the nacelle containing the generator, which is a heavy object that cannot be lifted by a climbing crane, using the lifting mechanism is removed from the ground. Since it is carried to the upper part of the temporary turret and temporarily stored, there is no need for a large crane.

Thereafter, the tower is constructed by sequentially stacking and joining the blocks of the tower by the hoisting mechanism arranged above the temporary tower, so that a large crane is not required, and the structure of the tower withstands the wind force for power generation. A strong structure is sufficient.

After the tower is completed, a nacelle for accommodating a generator is attached to the upper part of the tower while being suspended by the lifting mechanism, so that a large crane is unnecessary.

Further, the temporary turret is dismantled by using the climbing crane, and the blade is mounted by using the climbing crane. Therefore, the climbing crane is used for multiple purposes.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a method for constructing a wind turbine generator according to the present invention will be described with reference to the drawings.

1 and 2 and FIGS. 4 and 5 are elevation views showing steps of a method for constructing a wind turbine generator according to the present invention.

In FIG. 1, reference numeral 1 denotes a ground, on which a climbing crane 2 is installed. The climbing crane 2 is composed of a tower 2a, an elevating unit 2b, a mechanical gantry 2c, and a boom 2d. The climbing crane 2 is a crane that ascends while adding members by using its own mechanism. It has been heavily used.

In the present invention, first, the temporary turret 3 is assembled with the climbing crane 2. The temporary tower 3 is a pillar member 3
a, the beam 3b and the brace 3c are constructed in a quadrilateral or triangular shape in plan view, and are constructed while the tower 2a of the climbing crane 2 is supported by the support 4 as the height increases.

In FIG. 2, when the temporary turret 3 is completed, a lifting mechanism 5 such as a jack is placed on the temporary turret 3 by the climbing crane 2.

Thereafter, the nacelle 6 containing the generator is temporarily placed on the temporary tower 3 from the ground 1 by using the lifting mechanism 5.

The lifting mechanism 5 is widely used as a lift-up type jack in the construction industry such as construction, and a similar effect can be obtained by installing a normal winch.

FIG. 3 is a side sectional view showing the principle of the lift-up type jack in the lifting mechanism 5. Reference numeral 5a denotes a suspension rod having a plurality of steps formed in the height direction, which can be divided in the longitudinal direction. Has become. Further, 5b is a fixed part installed on the top of the tower 3, and 5c is a movable part. When hydraulic pressure acts on the cylinder portion a, the upper chuck b is engaged with the step of the suspension rod 5a, and the suspension rod 5a is moved upward.

Next, hydraulic pressure is applied to the cylinder part c,
When the hydraulic pressure of the cylinder portion a is lowered, the engagement of the upper chuck b is released, and the lower chuck d is engaged with the step of the suspension rod 5a, only the movable portion 5c moves downward. Again, the upper chuck b engages the step of the suspension rod 5a. By repeating the above operation, the suspension rod 5a moves up. Therefore, if the nacelle 6 is locked at the lower part of the suspension rod 5a, the nacelle 6 can be lifted.

When the weight of the nacelle becomes large, a suspending wire in which steel wires are bundled in a parallel strand may be used instead of the suspending rod 5a. In this case, a chuck of a hydraulic fastening type is used as the chuck portion, which is also known in the bridge and building industries.

In FIG. 4, when the nacelle 6 is temporarily placed on the upper part of the temporary turret 3, the block of the tower 8 is lifted and laterally moved using a separately installed hoisting mechanism 7 by welding or bolting. Assemble. Since the tower 8 is divided into a plurality of blocks, a small-capacity hoisting mechanism is possible. As the hoisting mechanism 7, a trolley-type hoist or a small winch is used.

When the tower 8 is completed, the nacelle 6 is hung above the tower 8 using the lifting mechanism 5 and fixed.

In FIG. 5, when the attachment of the nacelle 6 to the tower 8 is completed, the temporary turret 3 is dismantled using the climbing crane 2.

At this time, if the climbing crane 2 is supported on the tower 8 by another support 9, the climbing crane 2 will not fall down.

FIG. 6 is a schematic view, which is different from the elevation views of FIGS. 1 to 4 and is shown from a direction in which the horizontal angle is changed by 90 °. In FIG. 6, when the temporary tower 3 is removed, The blade 10 is attached to the nacelle 6 using the climbing crane 2 to complete the wind power generator.

[0030]

The present invention has been described above. The tower can be easily made high-rise, and it is not necessary to increase the strength more than necessary, so that it can be manufactured at a low cost and there is no need for a large crane. It is possible to easily construct a wind power generator even in an area where access to traffic is inconvenient, such as a remote island or a mountainous area.

[Brief description of the drawings]

FIG. 1 is an elevation view showing a construction process of a wind turbine generator of the present invention.

FIG. 2 is an elevation view showing a construction process of the wind turbine generator of the present invention.

FIG. 3 is a sectional view showing an example of a lifting mechanism used in the present invention.

FIG. 4 is an elevation view showing a construction process of the wind turbine generator of the present invention.

FIG. 5 is an elevation view showing a construction process of the wind turbine generator of the present invention.

FIG. 6 is an elevation view showing a construction process of the wind turbine generator of the present invention.

FIG. 7 is an elevation view illustrating the related art 1.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ground 2 Climbing crane 3 Temporary turret 4 Support 5 Lifting mechanism 6 Nacelle 7 Hoisting mechanism 8 Tower 9 Separate support 10 Blade 11 Support stand 12 Support shaft 13 Counterweight 14 Rotating device

Claims (1)

[Claims] 1. A temporary turret is assembled upward from below using a climbing crane, and a nacelle containing a generator is transferred upward from the ground by a lifting mechanism provided at the top of the assembled temporary turret. After the temporary placement, the tower is assembled upward from below using the winding mechanism provided at the top of the temporary tower, and the nacelle accommodating the generator is attached to the upper part of the assembled tower using the lifting mechanism. And disassembling the temporary turret by using the climbing crane and attaching a blade.