Tower internal-equipment bracket structure and wind turbine generator

A tower-internal-equipment bracket structure provided inside a pole-type steel tower, employing a cylindrical shell, to support tower internal equipment comprising:

• 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.

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.