JP2014222045A - Support device for floating body of floating body type ocean wind power generation equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a support device for a floating body of floating body type ocean wind power generation equipment for swingably supporting an assembly such as a wind mill mounted on the floating body and a water wheel which is installed under water level and is driven by tidal power.SOLUTION: Six brackets 43 are fastened to an inner wall 42 of a hollow 41 of a floating body 4, and six elastic support parts 6 are attached between an attachment surface 431 of the bracket 43 and an outer circumferential surface 521 of a lower part bearing support body 52. The six elastic support parts 6 are arranged at uniform angular intervals around a center axial line 11 of a first driving shaft 21 and a second driving shaft 31. The elastic support parts 6 are formed by stacking rubber and a metal plate alternately. As the result, the elastic support parts 6 support a load which acts on a bearing support body 5, follow relative movement between the bearing support body 5 and the floating body 4 to perform shear deformation and absorb vibration energy of winds or waves acting between the bearing support body 5 and the floating body 4 to attenuate vibrations.

Description

  The present invention relates to a support device for supporting a floating offshore wind power generator on a floating body. More specifically, a wind turbine mounted on a floating body floated on the sea and a floating type offshore that is connected to the drive shaft of this wind turbine and is installed under the surface of the water and uses a turbine driven by tidal power. The present invention relates to a support device for a floating body of a wind power generator.

  Due to environmental problems, energy resource depletion, etc., priority investments have been made in the development of various natural energies. Among these natural energies, offshore wind turbine generators that are not constrained by land like land are attracting attention. There are two types of offshore wind power generators: a fixed type in which a windmill is provided on a foundation structure fixed to the bottom of the water, and a floating type in which a windmill is provided on a floating body that floats on the water. In shallow coastal areas, fixed wind power generators with low equipment costs are generally used. However, when a fixed wind power generator is used in a coastal area where the water depth is drastically deepened, the cost of the infrastructure for the substructure is significantly increased. Therefore, floating offshore wind power generators are suitable in Japan where there are many coastal areas where the water depth increases rapidly.

  The floating offshore wind turbine generator needs to be installed on a floating body floating on the ocean, and the floating body and the wind turbine generator need to be connected and fixed. This floating body is moored to the sea floor with an anchor so as not to move. Further, in order to ensure the stability of the wind power generator installed on the floating body on the ocean, a floating body that fixes the windmill is disposed in the center, and a plurality of outer floating bodies are disposed on the outer periphery of the central floating body. Things have also been proposed.

  Furthermore, there has been proposed a structure in which the lower surface of a floating structure guided up and down by a plurality of piles is supported by a bellows-shaped shock absorber to attenuate the swing of the floating structure (Patent Document 1). In addition, although not mounted on the floating body, by connecting the windmill and the waterwheel coaxially through a clutch to the frame fixedly installed in the river, by rotating the waterwheel constantly even in the windless state, A self-starting wind power generator has been proposed (Patent Document 2).

  In addition, a turbine that uses tidal power is placed at the bottom of the floating body, and a tank that stores this energy is placed at the top of the floating body. The upper and lower systems are connected by a single pole, and this pole is placed on the floating body. What is supported by a spherical bearing has also been proposed (Patent Document 3).

JP 2007-321481 A JP 2007-239542 A Special table 2010-511115 gazette

  However, these prior arts are based on the premise that the floating body and the wind power generator installed on the floating body are installed only on the floating body. In order to improve the self-starting property of a wind turbine generator that requires strong wind power at the beginning of rotation, a wind turbine generator in which a wind turbine and a water turbine are connected coaxially is preferable. However, when a structure extends from the floating body to the water due to the combined use of a windmill and a watermill, the conventional structure that connects the floating body to the wind power generator mounted on the windmill generates complex motion. The vibration of the device cannot be effectively suppressed and attenuated. That is, since a windmill and a water turbine are used together, a wind power generator that performs a complicated motion cannot be supported by a simple spherical bearing that performs a centering operation around one point on the central axis.

The present invention has been made based on the technical background as described above, and achieves the following object.
An object of the present invention is a floating body-type offshore wind power generator, in which a floating body mounted on the floating body and an assembly such as a turbine installed below the surface of the water and driven by tidal power are supported on the floating body so as to be swingable. An object of the present invention is to provide a support device for a floating body of an offshore wind power generator.

  Another object of the present invention is to provide a floating offshore wind power generator that can be mounted on the upper and lower parts of the floating body even when subjected to a composite load such as moment by wind, tidal current, etc. It is an object of the present invention to provide a support device for a floating body of a floating offshore wind power generator capable of stably supporting an assembly on the floating body.

  The said subject is solved by the following means. That is, the floating body type offshore wind power generation apparatus of the present invention 1, the support device to the floating body, the floating body floating on the surface of the water or the ocean, is mounted on the floating body and arranged on the upper part of the floating body, to convert wind energy into mechanical energy, An upper assembly having a first drive shaft disposed in a vertical direction; and a second drive shaft mounted on the floating body and disposed at a lower portion of the floating body and disposed in a vertical direction. In a floating offshore wind turbine generator comprising a lower assembly in which a second drive shaft is concentrically connected, a bearing support that supports a bearing that rotatably supports the first drive shaft and the second drive shaft; In order to support the bearing support body with the floating body interposed between the floating body and the bearing support body, it is formed by alternately laminating rubber and metal plates, and supports the load received by the bearing support body. Together with the above To follow the relative movement between the receiving support and said floating body, characterized in that an elastic bearing for shear deformation.

  The floating body offshore wind power generator according to the second aspect of the present invention is the floating device according to the first aspect of the present invention, wherein the elastic bearing portion includes a plurality of the elastic bearing portions at equal angular intervals around the central axes of the first drive shaft and the second drive shaft. It is characterized by being arranged individually.

  According to a third aspect of the present invention, there is provided a floating body offshore wind power generation apparatus according to the first aspect of the present invention, wherein the elastic bearing portion extends from a lower side of the bearing support to a central axis of the first drive shaft and the second drive shaft. It is characterized by being inclined upward.

  According to a fourth aspect of the present invention, there is provided a support device for a floating body of the floating offshore wind turbine generator according to the second or third aspect, wherein the bearing support is within a predetermined range on the central axis of the first drive shaft and the second drive shaft. It is characterized by swinging motion around one point.

  The support device for a floating body of the floating offshore wind power generator according to the fifth aspect of the present invention is the apparatus according to the second or third aspect, wherein the rubber bonded to the metal plate at the end of the elastic support portion is separated from the center of the elastic support portion. It is characterized in that the thickness at the above position is thicker than the thickness at the center.

  The support device for a floating body of the floating offshore wind power generator according to the sixth aspect of the present invention is the second or third aspect of the present invention. It is characterized by.

  The floating body type offshore wind turbine generator according to the seventh aspect of the present invention is characterized in that, in the sixth aspect, the spherical surface or the cylindrical surface is centered on the swing center of the bearing support.

  The floating body type offshore wind power generation apparatus according to the present invention 8 is a floating body support apparatus according to the present invention 2 or 3, wherein the elastic support portion is formed by serially connecting elastic support portions formed by alternately laminating rubber and metal plates. It is characterized by being arranged in a plurality of stages.

  According to the ninth aspect of the present invention, there is provided a floating body offshore wind power generation apparatus according to the present invention, wherein the elastic bearing portion includes two elastic bearing portions formed by alternately laminating rubber and metal plates in series. In addition to being arranged in layers, one of the adhesive surfaces of the ends of the elastic support portions to the rubber of the metal plate is formed on a convex spherical surface or a convex cylindrical surface, and the other is formed on a concave spherical surface or a concave cylindrical surface. It is characterized by being.

  The floating body type offshore wind power generator according to the tenth aspect of the present invention is characterized in that, in the eighth aspect of the present invention, the elastic bearing portion is connected to a connecting portion of each stage via a metal intermediate plate. To do.

  According to the eleventh aspect of the present invention, there is provided a support device for the floating body of the floating offshore wind power generation apparatus according to the eighth aspect, wherein the rubber of the elastic support portion is formed by changing the hardness according to the position in the central axis direction of the elastic support portion. It is characterized by being.

  The floating body type offshore wind power generation apparatus according to the present invention 12 is characterized in that the lower assembly is a water wheel that converts the flow of water or seawater into mechanical energy in the present invention 2 or 3. .

  The floating offshore wind power generation apparatus according to the thirteenth aspect of the present invention is the apparatus for supporting a floating body according to the second or third aspect, wherein the piston orifice in the cylinder filled with oil is interposed between the floating body and the bearing support. An oil damper is provided that attenuates vibration between the bearing support and the floating body by a resistance force when oil passes.

  Since the support device to the floating body of the floating offshore wind power generator of the present invention uses laminated rubber, even if the assembly mounted on the upper and lower parts of the floating body is subjected to a load such as moment by wind, tidal current, etc. Since it is easily deformed, the assembly can be stably supported on the floating body, and the vibration energy of wind and waves acting between the bearing support and the floating body can be absorbed and damped.

FIG. 1 is an external view showing an outline of a floating offshore wind turbine generator. FIG. 2 is a partially enlarged view of FIG. 1 showing a support device for a floating offshore wind power generator. FIG. 3 is a plan view showing the arrangement of the bearing device when the bearing support is viewed from the plane. 4 is a cross-sectional view showing a modification of FIG. 2 in which the elastic support portions of the support device are stacked in two stages, FIG. 4 (a) is a cross-sectional view showing a state before a load is applied, and FIG. 4 (b). FIG. 3 is a cross-sectional view showing a state where a load is applied. FIG. 5 is a cross-sectional view showing a modified example in which the elastic support portion of the support device is made one stage. FIG. 5A is a cross-sectional view showing a state before a load is applied, and FIG. It is sectional drawing which shows a state. 6 is a cross-sectional view showing a modification of FIG. 5, FIG. 6 (a) is a cross-sectional view showing a state before a load is applied, and FIG. 6 (b) is a cross-sectional view showing a state where a load is applied. . FIG. 7 is a side view showing another modified example in which the elastic support portions of the support device are stacked in two stages, FIG. 7A is a side view showing a state before a load is applied, and FIG. It is a side view which shows the state to which the load was added. FIG. 8 is a cross-sectional view showing another modification example in which the elastic support portions of the support device are stacked in two stages, FIG. 8A is a cross-sectional view showing a state before a load is applied, and FIG. It is sectional drawing which shows the state to which the load was added.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an external view showing an outline of a floating offshore wind turbine generator. FIG. 2 is a partially enlarged view of FIG. 1 showing a support device for a floating offshore wind power generator. FIG. 3 is a plan view showing the arrangement of the bearing device when the bearing support is viewed from the plane. As shown in FIGS. 1 to 3, a floating offshore wind power generator 1 according to an embodiment of the present invention includes a windmill (upper assembly) 2, a water turbine (lower assembly) 3, a floating body 4, a bearing support 5, and an elastic bearing. Part 6 is configured.

  The floating body 4 has a hollow disk shape, and the windmill 2 disposed on the top of the floating body 4 is a Darrieus type windmill, which converts wind energy into mechanical energy. A first drive shaft 21 is arranged in the vertical direction at the center of the windmill 2, and three vertically long and rectangular wind receiving surfaces 22 are arranged around the first drive shaft 21 at equal intervals. The water turbine 3 disposed at the lower part of the floating body 4 is a Savonius water turbine, and converts the flow of seawater into mechanical energy. A second drive shaft 31 is disposed in the center of the water wheel 3 in the vertical direction.

  The bearing support 5 disposed in the center of the cavity 41 at the center of the floating body 4 is configured by connecting an upper bearing support 51 having three columns and a lower bearing support 52 with bolts (not shown). . A portion slightly above the lower end of the first drive shaft 21 is rotatably supported on the upper bearing support 51 by a bearing (see FIG. 1) 23. Further, the lower end of the first drive shaft 21 is rotatably supported by a bearing (self-aligning roller bearing) 24 on the lower bearing support 52. That is, the first drive shaft 21 is pivotally supported by the lower bearing support body 52 so as to be able to swing around a point on the central axis 11 of the first drive shaft 21. Further, the upper end portion of the second drive shaft 31 of the water turbine 3 is rotatably supported by a lower bearing support 52 by a bearing (double-row tapered roller bearing) 32.

  The second drive shaft 31 is concentrically connected to the first drive shaft 21, and the power generator 7 is installed at a connecting portion between the second drive shaft 31 and the first drive shaft 21 via a planetary gear system (not shown). Yes. When the water turbine 3 rotates clockwise as viewed from above, the wind turbine 2 starts (starts) rotation counterclockwise by the planetary gear system. Thereby, the self-starting property of the windmill 2 is improved. In addition, the underwater water turbine 3 acts as a weight to maintain the upright stability of the wind turbine 2.

  Six brackets 43 are fixed to the inner wall 42 of the cavity 41 of the floating body 4, and six elastic support portions 6 are attached between the mounting surface 431 of the bracket 43 and the outer peripheral surface 521 of the lower bearing support 52. It has been. The mounting surface 431 is formed so as to be inclined upward and inward, and the outer peripheral surface 521 is formed to be inclined downward and outward. Six elastic support portions 6 are arranged at equiangular intervals around the central axis 11 of the first drive shaft 21 and the second drive shaft 31.

  The elastic support 6 is formed by alternately laminating rubber and metal plates, and is hard in the vertical direction with respect to the metal plates and soft in the horizontal direction with respect to the metal plates. As a result, the elastic support 6 supports the load acting on the bearing support 5 and shears and deforms following the relative movement between the bearing support 5 and the floating body 4. Absorbs and attenuates vibration energy of wind and waves acting between the floating body 4.

  As shown in FIG. 2, the elastic bearing portion 6 is configured by arranging two elastic bearing portions 61, 61 formed by alternately laminating rubber and metal plates in series, and the elastic bearing portion 61 and the elastic bearing portion. The connection part of the part 61 is connected via a metal intermediate plate 62. The intermediate plate 62 has a characteristic that it deforms in a direction having no angle with respect to the rubber displacement on both sides of the intermediate plate 62 (the bracket 43 side and the lower bearing support 52 side). Therefore, the intermediate plate 62 has an effect of reducing the stress acting on the rubber by reducing the displacement angle of the rubber. The elastic bearing 6 is disposed so as to be inclined upward from below the bearing support 5 toward the central axis 11 of the first drive shaft 21 and the second drive shaft 31.

  As shown in FIGS. 2 and 3, three other brackets 44 are fixed to the inner wall 42 of the cavity 41 of the floating body 4. Three oil dampers 8 are mounted between the mounting surface 441 of the bracket 44 and the outer peripheral surface 521 of the lower bearing support 52. Three oil dampers 8 are arranged at equal angular intervals in the middle of the elastic bearing portions 6 and 6 around the central axis 11 of the first drive shaft 21 and the second drive shaft 31. The oil damper 8 fills the cylinder with oil, and the vibration force between the bearing support 5 and the floating body 4 (vibration in the direction of the central axis of the oil damper 8) is a resistance force when the oil passes through the piston orifice. Damping and supplementing the damping function of the elastic bearing 6.

  4 is a cross-sectional view showing a modification of FIG. 2 in which the elastic support portions of the support device are stacked in two stages, (a) is a cross-sectional view showing a state before a load is applied, and (b) is a load applied. It is sectional drawing which shows the state. As shown in FIG. 4, the elastic bearing portion 6 is formed by arranging two elastic bearing portions 61, 61 formed by alternately laminating rubber and metal plates in series, and the elastic bearing portion 61 and the elastic bearing portion. The connection part of the part 61 is connected via a metal intermediate plate 62.

  The metal plates 63, 63 at the right end of the elastic bearings 61, 61 (the side attached to the outer peripheral surface 521 of the lower bearing support 52) are attached to both ends (elastic bearing 6) of the adhesion surfaces 631, 631 with the rubber 64, 64. Inclined adhesive surfaces (inclined on the outer peripheral surface 521 side of the lower bearing support 52) 632 and 632 are formed at positions spaced apart from the central axis 65. With this configuration, the rubbers 64 and 64 bonded to the metal plates 63 and 63 are formed such that the thickness T2 at a position apart from the central axis 65 of the elastic bearing 6 is thicker than the thickness T1 near the central axis 65. Yes.

  That is, when the first drive shaft 21 of the windmill 2, the second drive shaft 31 of the water turbine 3, and the bearing support 5 are inclined by wind force or tidal power, the elastic bearing 6 is sheared following the movement of the lower bearing support 52. Although it is deformed, the displacement of the rubbers 64, 64 increases on the side closer to the center of the lower bearing support 52. Further, since the rubbers 64 and 64 at the connection portions with the metal plates 63 and 63 are bent at a large angle, a large stress acts on the rubbers 64 and 64 at the connection portions. By forming the thickness T2 at a position separated from the central axis 65 thicker than the thickness T1 in the vicinity of the central axis 65, it is possible to reduce the stress acting on the rubbers 64, 64, and thus durability is improved. improves.

  FIG. 5 is a cross-sectional view showing a modification in which the elastic support portion of the support device is made one stage, (a) is a cross-sectional view showing a state before a load is applied, and (b) is a cross-section showing a state where a load is applied. FIG. As shown in FIG. 5, the metal plate 66 on the right end (the side attached to the outer peripheral surface 521 of the lower bearing support 52) of the one-stage elastic support 6 is connected to both ends (elastic support of the rubber 64). 6 (positions separated from the central axis 65) are inclined adhesive surfaces (inclined toward the outer peripheral surface 521 of the lower bearing support 52) 662 and 662. With this configuration, the rubber 64 bonded to the metal plate 66 is formed such that the thickness T4 at a position apart from the central axis 65 of the elastic bearing 6 is thicker than the thickness T3 near the central axis 65.

  That is, when the bearing support 5 is tilted, the elastic bearing 6 is sheared and deformed following the movement of the lower bearing support 52, but the displacement of the rubbers 64 and 64 is large on the side near the center of the lower bearing support 52. Become. Further, since the rubber 64 at the connection portion with the metal plate 66 is bent at a large angle, a large stress acts on the rubber 64 at the connection portion. By forming the thickness T4 at a position separated from the central axis 65 thicker than the thickness T3 in the vicinity of the central axis 65, the stress acting on the rubber 64 can be reduced, so that the durability is improved. .

  6 is a cross-sectional view showing a modification of FIG. 5, FIG. 6 (a) is a cross-sectional view showing a state before a load is applied, and FIG. 6 (b) is a cross-sectional view showing a state where a load is applied. . In FIG. 6, an arcuate adhesive surface 663 is formed as an adhesive surface with the rubber 64 on the metal plate 66 at the right end portion (the side attached to the outer peripheral surface 521 of the lower bearing support 52) of the one-stage elastic support portion 6. Has been. The arcuate adhesive surface 663 is formed in an arc shape centered on the center of the lower bearing support 52. With this configuration, the rubber 64 bonded to the metal plate 66 is formed such that the thickness T6 at a position away from the central axis 65 of the elastic bearing 6 is thicker than the thickness T5 near the central axis 65.

  That is, when the bearing support 5 is tilted, the elastic bearing 6 is sheared and deformed following the movement of the lower bearing support 52, but the displacement of the rubbers 64 and 64 is large on the side near the center of the lower bearing support 52. Become. Further, since the rubber 64 at the connection portion with the metal plate 66 is bent at a large angle, a large stress acts on the rubber 64 at the connection portion. By forming the thickness T6 at a position separated from the central axis 65 thicker than the thickness T5 in the vicinity of the central axis 65, the stress acting on the rubber 64 can be reduced, so that the durability is improved. .

  FIG. 7 is a side view showing another modified example in which the elastic support portions of the support device are stacked in two stages, (a) is a side view showing a state before a load is applied, and (b) is a load applied. It is a side view which shows a state. As shown in FIG. 7, the elastic support portion 6 is formed by stacking two elastic support portions 67 and 67 formed by alternately laminating rubber and metal plates in series, and the elastic support portion 67 and the elastic support portion. The connecting portion of the portion 67 is connected with a metal intermediate plate 68 interposed therebetween.

  The elastic support portions 67 and 67 are formed by changing the hardness of rubber in the direction of the central axis 65 of the elastic support portion 6. That is, in the embodiment of FIG. 7, by changing the rubber component and the content of the rubber component, the rubber at the central portion A2 along the central axis 65 of the elastic support portion 6 is soft, and the rubber at both ends A1, A3. Is formed hard.

  That is, when the bearing support 5 is tilted, the elastic bearing 6 is sheared and deformed following the movement of the lower bearing support 52, but the displacement of the rubber increases on the side closer to the center of the lower bearing support 52. Moreover, since the rubber at the connection portion with the metal plate is bent at a large angle, a large stress acts on the rubber at the connection portion. By forming the rubber at the central portion A2 along the central axis 65 of the elastic support portion 6 softly and forming the rubber at both ends A1 and A3 hard, it is possible to reduce the displacement of the rubber, thereby improving durability. .

  FIG. 8 is a cross-sectional view showing another modification example in which the elastic support portions of the support device are stacked in two stages, FIG. 8A is a cross-sectional view showing a state before a load is applied, and FIG. It is sectional drawing which shows the state to which the load was added. As shown in FIG. 8, the elastic bearing portion 6 is formed by arranging two elastic bearing portions 61, 61 formed by alternately laminating rubber and metal plates in series, and the elastic bearing portion 61 and the elastic bearing portion. The connection part of the part 61 is connected via a metal intermediate plate 62.

  As shown in FIG. 8, the metal plate 633 at the right end (the side attached to the outer peripheral surface 521 of the lower bearing support 52) of the right elastic support 61 has an adhesive surface 634 with the rubber 64 formed into a concave spherical surface. Yes. Similarly, the metal plate 633 at the left end (the side attached to the attachment surface 431 of the bracket 43) of the left elastic support 61 has an adhesive surface 634 with the rubber 64 formed into a concave spherical surface.

  As shown in FIG. 8, the metal plate 635 on the left end (the side attached to the intermediate plate 62) of the right elastic support 61 has an adhesive surface 636 with the rubber 64 formed into a convex spherical surface. Similarly, the metal plate 635 at the right end (the side attached to the intermediate plate 62) of the left elastic support 61 has an adhesive surface 636 with a rubber 64 formed into a convex spherical surface. The curvature radii of the bonding surfaces 634 and 634 and the bonding surfaces 636 and 636 are formed to have a curvature radius centered on the swing center of the lower bearing support 52.

  Since the distances from the swing center of the lower bearing support 52 to the bonding surfaces 634 and 634 and the bonding surfaces 636 and 636 are different, the curvature radii of the bonding surfaces 634 and 634 and the bonding surfaces 636 and 636 are different. However, in order to reduce the manufacturing cost, the radius of curvature may be the same, and the radius of curvature at the intermediate position of the elastic bearing 6 from the swing center of the lower bearing support 52 may be used. In order to reduce the manufacturing cost, the adhesive surfaces 634 and 634 may be formed in a concave cylindrical surface, and the adhesive surfaces 636 and 636 may be formed in a convex cylindrical surface.

  With this configuration, when the first drive shaft 21 of the wind turbine 2, the second drive shaft 31 of the water turbine 3, and the bearing support 5 are tilted by wind force or tidal power, the lower bearing support 52 follows the movement of the lower bearing support 52. The elastic support portion 6 smoothly swings about the swing center of the body 52, and the right elastic support portion 61 and the left elastic support portion 61 are inclined substantially uniformly. Accordingly, the amount of compression and the amount of tension of the rubbers 64 and 64 in each layer are almost equalized, and it is possible to avoid a local excessive stress acting on the rubbers 64 and 64, so that durability is improved.

  Although the embodiment of the present invention has been described above, the present invention is not limited to this embodiment. Needless to say, changes can be made without departing from the scope and spirit of the present invention. For example, in the above-described embodiment of the present invention, the lower assembly is a water wheel that converts the flow of seawater into mechanical energy, but may be a weight member that has a center of gravity disposed below the water surface. The weight member suppresses inclination and enlargement of the floating body by causing a restoring force to return the inclination of the first drive shaft of the wind turbine inclined by the wind force or the like by gravity applied to the center of gravity.

DESCRIPTION OF SYMBOLS 1 ... Floating offshore wind power generator 11 ... Center axis 2 ... Windmill (upper assembly)
21 ... First drive shaft 22 ... Wind receiving surface 23 ... Bearing 24 ... Bearing 3 ... Water wheel (lower assembly)
DESCRIPTION OF SYMBOLS 31 ... 2nd drive shaft 32 ... Bearing 4 ... Floating body 41 ... Cavity 42 ... Inner wall 43 ... Bracket 431 ... Mounting surface 44 ... Bracket 441 ... Mounting surface 5 ... Bearing support body 51 ... Upper bearing support body 52 ... Lower bearing support body 521 ... outer peripheral surface 6 ... elastic bearing part 61 ... elastic bearing part 62 ... intermediate plate 63 ... metal plate 631 ... adhesion surface 632 ... inclined adhesion surface 633 ... metal plate 634 ... adhesion surface (concave spherical surface)
635 ... Metal plate 636 ... Bonding surface (convex spherical surface)
64 ... Rubber 65 ... Center axis 66 ... Metal plate 661 ... Adhesive surface 662 ... Inclined adhesive surface 663 ... Arc-shaped adhesive surface 67 ... Elastic bearing part 68 ... Intermediate plate 7 ... Power generation device 8 ... Oil damper

Claims (13)

A floating body floating on the surface of the water or ocean,
An upper assembly mounted on the floating body and disposed on top of the floating body, converting wind energy into mechanical energy and having a first drive shaft disposed vertically;
A lower assembly mounted on the floating body and disposed at a lower portion of the floating body and having a second drive shaft disposed in a vertical direction, and the second drive shaft is concentrically connected to the first drive shaft. In the floating offshore wind turbine generator,
A bearing support that supports a bearing that rotatably supports the first drive shaft and the second drive shaft;
In order to support the bearing support body with the floating body interposed between the floating body and the bearing support body, it is formed by alternately laminating rubber and metal plates, and supports the load received by the bearing support body. And an elastic bearing portion that shears and deforms following the relative movement between the bearing support and the floating body. A bearing device for the floating body of the floating offshore wind turbine generator. In the support device to the floating body of the floating offshore wind turbine generator according to claim 1,
A plurality of the elastic support portions are arranged at equiangular intervals around the central axis of the first drive shaft and the second drive shaft. A support device for a floating body of a floating offshore wind turbine generator. In the support device to the floating body of the floating offshore wind turbine generator according to claim 1,
The floating bearing type offshore wind turbine generator is characterized in that the elastic bearing portion is inclined upward from the lower side of the bearing support toward the central axis of the first drive shaft and the second drive shaft. Support device for floating body. In the support apparatus to the floating body of the floating type offshore wind power generator of Claim 2 or 3,
The bearing support is capable of swinging around a point in a predetermined range on the central axis of the first drive shaft and the second drive shaft. Bearing device. In the support apparatus to the floating body of the floating type offshore wind power generator of Claim 2 or 3,
The rubber to be bonded to the metal plate at the end of the elastic support portion is formed such that the thickness at a position away from the central axis of the elastic support portion is thicker than the thickness near the central axis of the elastic support portion. A floating body type offshore wind power generator bearing device for a floating body. In the support apparatus to the floating body of the floating type offshore wind power generator of Claim 2 or 3,
The apparatus for supporting a floating body of a floating offshore wind power generator, characterized in that the adhesive surface of the end of the elastic bearing portion with the rubber of the metal plate is formed on a spherical surface or a cylindrical surface. In the support device to the floating body of the floating offshore wind turbine generator according to claim 6,
The spherical surface or the cylindrical surface is centered on the center of oscillation of the bearing support. A support device for a floating body of a floating offshore wind turbine generator. In the support apparatus to the floating body of the floating type offshore wind power generator of Claim 2 or 3,
The elastic support portion is formed by alternately stacking elastic support portions formed by alternately laminating rubber and metal plates in series, and supports the floating body of a floating offshore wind turbine generator. apparatus. In the support apparatus to the floating body of the floating offshore wind power generator according to claim 8,
The elastic support portion is formed by stacking two elastic support portions formed by alternately laminating rubber and metal plates in series, and bonding the metal plate rubber at the end of the elastic support portion. One of the surfaces is formed on a convex spherical surface or a convex cylindrical surface, and the other surface is formed on a concave spherical surface or a concave cylindrical surface. A support device for a floating body of a floating offshore wind turbine generator. In the support apparatus to the floating body of the floating offshore wind power generator according to claim 8,
The elastic support portion is connected to a connecting portion of each stage with a metal intermediate plate interposed therebetween. The support device for a floating body of a floating offshore wind turbine generator. In the support apparatus to the floating body of the floating offshore wind power generator according to claim 8,
The rubber of the elastic bearing part is formed by changing the hardness according to the position of the elastic bearing part in the central axis direction. The apparatus for supporting a floating body of a floating offshore wind turbine generator. In the support apparatus to the floating body of the floating type offshore wind power generator of Claim 2 or 3,
The lower assembly is a water wheel that converts a flow of water or seawater into mechanical energy. A support device for a floating body of a floating offshore wind turbine generator. In the support apparatus to the floating body of the floating type offshore wind power generator of Claim 2 or 3,
The vibration between the bearing support and the floating body is damped by the resistance force when the oil passes through the orifice of the piston in the cylinder filled with oil interposed between the floating body and the bearing support. An apparatus for supporting a floating offshore wind power generator equipped with an oil damper to the floating body.

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