Tower internal-equipment bracket structure and wind turbine generator
First Claim
1. A tower-internal-equipment bracket structure provided inside a pole-type steel tower, employing a cylindrical shell, to support tower internal equipment,wherein a cylindrical shell member having a protruding portion toward a tower interior is interposed, by means of butt welding, between divided portions formed by dividing said cylindrical shell at a desired position in an axial direction, and the protruding portion serves as a bracket-member support portion for the tower internal equipment.
1 Assignment
0 Petitions
Accused Products
Abstract
A tower-internal-equipment bracket structure with a welded structure that can ensure a fatigue strength classification equal to or greater than that of butt welding (BW) or that requires no welding and a wind turbine generator provided with this tower-internal-equipment bracket structure are provided. In a tower-internal-equipment bracket structure provided inside a pole-type steel tower, employing a cylindrical shell (11), to support tower internal equipment, a ring-shaped member (20) having a protruding portion (21) toward the tower interior is interposed, by means of butt welding (BW), between divided portions formed by dividing the cylindrical shell (11) at a desired position in an axial direction, and the protruding portion (21) serves as a bracket-member support portion for the tower internal equipment.
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Citations
19 Claims
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1. A tower-internal-equipment bracket structure provided inside a pole-type steel tower, employing a cylindrical shell, to support tower internal equipment,
wherein a cylindrical shell member having a protruding portion toward a tower interior is interposed, by means of butt welding, between divided portions formed by dividing said cylindrical shell at a desired position in an axial direction, and the protruding portion serves as a bracket-member support portion for the tower internal equipment.
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7. A tower-internal-equipment bracket structure provided inside a pole-type steel tower, employing a cylindrical shell, to support tower internal equipment,
wherein a bar-shaped member with a cross-sectional shape having a protruding portion toward a tower interior is interposed, by means of butt welding, in a divided portion of the shell in a circumferential direction to form a cylindrical shape, and the protruding portion serves as a bracket support portion for the tower internal equipment, and wherein the bar-shaped member has a substantially T-shaped cross-section.
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10. A tower-internal-equipment bracket structure provided inside a pole-type steel tower, employing a cylindrical shell, to support tower internal equipment comprising:
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a ring-shaped bracket having a smaller diameter than an internal-wall surface of the shell; and a plurality of tightening bolts that are threaded by passing through the ring-shaped bracket in a radiating pattern, wherein the ring-shaped bracket is secured in a circumferentially compressed state by causing bolt ends to make close contact with the internal-wall surface by tightening the tightening bolts. - View Dependent Claims (11, 12)
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13. A tower-internal-equipment bracket structure provided inside a pole-type steel tower, employing a cylindrical shell, to support tower internal equipment,
wherein a plurality of bracket elements formed by dividing, in a circumferential direction, a ring-shaped bracket with a smaller diameter than an internal-wall surface of the shell are joined by threading joining bolts in which tightening portions are provided by forming reverse screws at both ends thereof; -
the ring-shaped bracket is expanded in the circumferential direction by operating the joining bolts; and the ring-shaped bracket is secured by causing an outer circumferential surface thereof to make close contact with the internal-wall surface. - View Dependent Claims (14, 15)
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16. A tower-internal-equipment bracket structure provided inside a pole-type steel tower, employing a cylindrical shell, to support tower internal equipment,
wherein a step portion is formed at an internal-wall surface of the shell to serve as a bracket-member support portion for the tower internal equipment, and wherein the step portion is formed at a reduced-diameter portion where the shell is deformed into a substantially conical shape.
Specification