MAINTENANCE METHOD FOR WINDMILL BLADE OF WIND POWER GENERATION EQUIPMENT

Title:

MAINTENANCE METHOD FOR WINDMILL BLADE OF WIND POWER GENERATION EQUIPMENT

Document Type and Number:

WIPO Patent Application WO/2011/161740

Kind Code:

A1

Abstract:

Provided is a maintenance method wherein an operation process which has conventionally required four rack rails, four maintenance elevators, and four operators, can be performed by one rack rail, one elevator installed on the rack rail, and fewer operators. A rack rail segment is vertically provided in the vicinity of the base end of the outer peripheral surface of a tapered and cylindrical wind power generation tower. The outer peripheral surface has no gripping portions. Rack rail installation plates each having a predetermined length and both ends to which strong magnets are secured, are secured to the rack rail segment at upper and lower positions spaced at a predetermined interval, on the outer peripheral surface of the wind power generation tower, so that the rack rail segment having a predetermined length is vertically installed. A maintenance elevator integrally provided with a drive device for lifting and lowering is installed. Operators stand on the maintenance elevator, and successively secure the rack rail installation plates to rack rail segments to extend a rack rail upward. The rack rail segments are successively connected until the rack rail reaches the top end of the wind power generation tower. A workbench for inspecting blades is coupled to the drive device of the maintenance elevator.

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Inventors:

SAKURAI YASUHISA (JP)

Application Number:

PCT/JP2010/006960

Publication Date:

December 29, 2011

Filing Date:

November 30, 2010

Export Citation:

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Assignee:

SAKURAIGIKEN CO LTD (JP)
SAKURAI YASUHISA (JP)

International Classes:

F03D11/00

Domestic Patent References:

WO2009101697A1

2009-08-20

Foreign References:

JP2003312963A	2003-11-06
JP2005517124A	2005-06-09
JPH096760C2

Attorney, Agent or Firm:

MATSUNAMI, Yoshifumi (JP)
Yoshifumi Matsunami (JP)

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