IP Library Granted Patent US 7,895,744
Granted Patent B2
US 7,895,744 · App. 12/445,199 · Granted Mar 1, 2011

Method of replacing wind turbine equipment

Assignee: Mitsubishi Heavy Industries, Ltd.
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 7,895,744
App. No.
12/445,199
Granted
Mar 1, 2011
Kind
B2
Abstract

A method of replacing wind turbine equipment, which can reduce the cost for replacing large equipment disposed in a nacelle, is provided. The method is characterized by including a winch-hoisting step for winching up to a nacelle a reciprocating winch that is used for replacing the wind turbine equipment disposed in the nacelle mounted atop a tower and a balance supporting the wind turbine equipment with an ordinarily-installed winch provided on a girder that moves in the nacelle; a wire-hoisting step for hoisting a wire that is used for the replacement of the wind turbine equipment to the nacelle from a drum disposed on the ground; a winch-replacing step for detaching the ordinarily-installed winch from the girder and attaching the winch for replacement to the girder; and a wire-arranging step for arranging the hoisted wire on the reciprocating winch and a movable pulley provided between the balance and the girder.

Claims (6)

1. A method of replacing wind turbine equipment, comprising:

winching up to a nacelle mounted atop a tower a reciprocating winch and a balance, wherein said winching is performed with a winch provided on a girder that moves in the nacelle;

hoisting a wire to the nacelle from a drum disposed on a ground;

detaching the winch from the girder and attaching the reciprocating winch to the girder;

attaching the balance to the wind turbine equipment to be replaced; and

arranging the hoisted wire on the reciprocating winch and a movable pulley provided between the balance and the girder.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 10, 2009
From: NUMAJIRI, TOMOHIRO
To: MITSUBISHI HEAVY INDUSTRIES, LTD.
Reel/Frame 022533/0917 →
Priority Claims (1)
JP 2007-161652 · Jun 19, 2007 · national
Continuity (1)
Related Publication 20100011575A1 · Jan 21, 2010