JPH04246281A - Vibrationproof type wind power generator - Google Patents

Abstract

PURPOSE:To obtain a quiet vibrationproof type wind power generator by interposing a vibrationproof means between the turning seat, etc., of a poewr generator, etc., and a tower, in order to prevent the propagation of the vibration and noise generated from a speed-increasing gear and the power generator to the tower. CONSTITUTION:A wind power generator is equipped with a turning seat 9 in the upper part of a tower 5, and a blade 1, speed-increasing gear 2, power generator 3, etc., are installed in turnable manner nearly around a vertical shaft over the turning seat 9. In the lower part of the turning seat 9, a tower installation seat 10 is suspended, around the vicinity of the top part of the tower 5, and a flexible vibrationproof member 11 consisting of a rubber plate, etc., as vibrationproof member is interposed between the inner periphery of the tower installation seat 10, undersurface of the turning seat 9, and the vicinity of the top part of the tower 5. Accordingly, the transmission of the vibration of the power generator, etc., to the tower is prevented, and the vibration and noise transmitted to the tower can be prevented.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wind power generator equipped with anti-vibration measures.

0002

[Prior Art] Fig. 5 shows a conventional wind power system having a swing seat 9 on a tower 5, and a power generating equipment including a blade 1, a generator 3, etc. mounted on the swing seat 9 so as to be able to swing around a substantially vertical axis. FIG. 2 is a schematic side sectional view of the power generation device.

However, in this conventional wind power generator, vibrations and noise generated from the speed increaser 2 and the generator 3 are transmitted through the speed increaser mounting foot 6 or the generator mounting foot 7 to the nacelle 4 and the swivel seat bearing. 8 and the rotating seat 9, the sound propagates to the tower 5, and is radiated to the outside as solid-state sound.

0004

[Problems to be Solved by the Invention] The above-mentioned conventional wind power generator has the following problems to be solved.

That is, in the conventional device, as described above, the nacelle 4
Noise and vibration generated by the speed increaser 2 and generator 3 installed inside the speed increaser mounting foot 6 and generator mounting foot 7
There was a problem in that vibrations were propagated to the tower 5 in this order through the nacelle 4, the swivel seat bearing 8, and the swivel seat 9, and were radiated from the tower 5 to the outside as solid sound. For this reason, it was necessary to place the wind power generator away from private houses.

In order to solve the above-mentioned problems, the present invention dampens the vibrations generated by the speed increaser 2 and the generator 3 with vibration isolating means after propagating to the swing seat 9 and before being released from the tower 5 to the outside. The purpose of this invention is to provide a wind power generation device with low vibration and low noise.

[0007]

[Means for Solving the Problems] As a means for solving the above-mentioned problems, the present invention has a swivel seat on the top of the tower, and has wings, a generator, etc. mounted on the swivel seat so as to be able to swing around a substantially vertical axis. In a wind power generation device equipped with power generation equipment, there is a tower mounting seat vertically installed below the swing seat surrounding the outer circumference near the top of the tower; It is an object of the present invention to provide a vibration-isolated wind power generator characterized by comprising a vibration-isolating means interposed between the top and the vicinity of the top.

[0008]

[Operations] Since the present invention is constructed as described above, it has the following functions.

That is, vibration isolating means is provided between the lower surface of the swivel seat having the power generating equipment on the upper part, the inner periphery of the tower mounting seat which is vertically installed below the rotating seat surrounding the outer periphery of the vicinity of the top of the tower, and the vicinity of the top of the tower. As a result, even if vibrations propagate from the generating equipment, which is the source of the vibration, to the swing seat and tower mounting seat,
It is buffered by the vibration isolating means and hardly propagates to the tower. Therefore, the intensity radiated from the tower to the outside as solid sound is drastically reduced.

0010

Embodiments First to fourth embodiments of the present invention will be explained with reference to FIGS. 1 to 4. The overall configuration is shown in FIG. 1 of the first embodiment, and in each of the figures of the second to fourth embodiments, only essential parts are shown at the right end of FIG. 1. Further, the same reference numerals are given to the same constituent members as in the conventional example or the previous embodiment, and the explanation thereof will be omitted.

First, a first embodiment will be explained with reference to FIG. In FIG. 1, a tower mounting seat 10 is vertically installed at the bottom of the swing seat 9, surrounding the outer periphery near the top of the upper part of the tower 5.
The inner periphery of the tower mounting seat 10 and the lower surface of the swing seat 9 and the tower 5
A vibration isolating material 11 made of rubber or a synthetic resin suitable for vibration isolation is interposed between the top and the vicinity of the top. The tower 5, the tower mounting seat 10, and the vibration isolator 11 are penetrated by a weather-resistant adhesive or by a bolt having a vibration isolator cylinder around it, and are fastened with vibration isolators on both sides of the bolt head and nut. ing.

Since the present embodiment is constructed as described above, most of the vibrations generated from the speed increaser 2, generator 3, etc. and propagated to the swing seat 9 are absorbed by the vibration isolating material 11. It is attenuated and hardly propagated to tower 5. Therefore, almost no vibration or noise is radiated from the tower 5 to the outside.

Next, a second embodiment will be explained with reference to FIG. In FIG. 2, a required gap is provided between the vicinity of the top of the tower 5, the lower surface of the swing seat 9, and the inner periphery of the tower mounting seat 10, and a flexible plate made of, for example, a rubber plate is provided at the upper and lower end sides of the gap. The lower weir 13 has an injection hole 14 for injecting the vibration isolating material 12, and the upper weir 13 has an air vent hole 15.

In this state, a liquid vibration damping material 12 such as a two-component curing type or a type that hardens by reacting with oxygen in the air is injected through the injection hole 14 to fill the space between the weirs 13 on both the upper and lower sides. Let solidify. As a result, the same vibration damping effect as in the first embodiment can be obtained. Note that when the vibration isolating material 12 is injected from below, the air inside is exhausted through the air vent hole 15.

According to this embodiment, since the vibration isolating material 12 is initially in a liquid state, there is an advantage that no molding operation is required. Further, there is an advantage that the gap between the swing seat 9, the tower mounting seat 10, and the tower 5 is completely filled with the vibration isolating material 12.

Next, a third embodiment will be explained with reference to FIG. In FIG. 3, first, the anti-vibration rubber 16 is placed on the tower 5, and the swing seat 9 is placed on top of it. The rotating seat 9 and the tower 5 are fixed with bolts 17 and nuts 18. Thereafter, the vibration isolating material 12 is injected into the weir 13 inside the tower mounting seat 10 through the injection hole 14 and solidified. According to this embodiment, since the tower 5 and the swing seat 9 are fixed by the vibration isolating rubber 16 and the bolts 17, etc., there is an advantage that the weir 13 can be easily held.

Next, a fourth embodiment will be explained with reference to FIG. In FIG. 4, a vibration-proof rubber 16 is placed on top of the tower 5, and a swing seat 9 is placed on top of it. Swivel seat 9 and tower 5 are attached with bolt 1
7 and nuts 18. Thereafter, the vibration isolating material 12 is injected into the weir 13 inside the tower mounting seat 10 through the injection hole 14 and solidified.

Furthermore, in order to position the tower 5 and the tower mounting seat 10, they are fastened through the vibration isolating material cylinder 19 and the vibration isolating seat 22 with bolts 20 and nuts 21.

This embodiment has the advantage of high structural strength. As described above, according to the first to fourth embodiments, the vibration isolating materials 11, 12, the vibration isolating rubber 16, etc. buffer and absorb the transmission of vibration from the swing seat 9 and the tower mounting seat 10 to the tower 5. This has the advantage that vibration and noise radiation from the tower 5 to the outside is significantly reduced, resulting in a quiet wind power generator. As a result, the installation location of the wind power plant is no longer limited to a location away from private homes, and there is an advantage that the market for the wind power plant is also expanded.

[0020]

Effects of the Invention Since the present invention is constructed as described above, it has the following effects.

That is, since almost no vibrations from the generator or the like are transmitted to the tower, the radiation of vibrations and noise from the tower to the outside is significantly reduced. Therefore, there is no need to move far away from private houses, and the range of choices for the installation location of the power plant is expanded. This will increase the usefulness of wind power plants and expand their sales channels.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of a vibration-proof wind power generator according to a first embodiment of the present invention.

FIG. 2 is a side sectional view of a main part of a vibration-isolated wind power generator according to a second embodiment of the present invention.

FIG. 3 is a side sectional view of a main part of a vibration-isolated wind power generator according to a third embodiment of the present invention.

FIG. 4 is a side sectional view of a main part of a vibration-isolated wind power generator according to a fourth embodiment of the present invention.

FIG. 5 is a side sectional view of a conventional wind power generator.

[Explanation of symbols]

1 Wings 2 Speed increaser 3. Generator 4 Nacelle 5 Tower 9 Swivel seat 10 Tower mounting seat 11, 12 Vibration isolating material 13 Cough 16 Anti-vibration rubber 17 Bolt 18 Nut 19 Vibration isolating tube 20 Bolt 21 Nut 22 Anti-vibration seat

Claims (1)

[Claims] Claim 1: A wind power generation device having a swivel seat on the top of a tower, and equipped with a power generation equipment consisting of wings, a generator, etc. on the swivel seat so as to be able to swivel about a substantially vertical axis, wherein the swivel seat has a A tower mounting seat vertically installed at the lower part of the tower surrounding the outer periphery near the top of the tower, and a vibration isolating means interposed between the inner periphery of the tower mounting seat and the lower surface of the swivel seat and the vicinity of the top of the tower. A vibration-proof wind power generation device characterized by comprising: