The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 27, 2011
Filed:
May. 22, 2008
Tomohiro Numajiri, Nagasaki, JP;
Nobuyasu Nakamura, Nagasaki, JP;
Tomohiro Numajiri, Nagasaki, JP;
Nobuyasu Nakamura, Nagasaki, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
The present invention provides a wind-turbine rotor-blade hoisting apparatus that enables attachment and removal of wind-turbine rotor blades without using a plurality of heavy machines and that enables attachment and removal of wind-turbine rotor blades on a site having a complex land shape with little flat land, a method for attaching a wind-turbine rotor blade, and a method for constructing a wind power generator. The present invention is characterized in that it includes a sheave () that guides a hoisting wire () from a rotor head (), to which a wind-turbine rotor blade () is to be attached, toward the wind-turbine rotor blade () and that is arranged so as to be movable in a direction along the rotation axis of the rotor head (); a retaining portion () that retains an attaching end of the wind-turbine rotor blade () such that a line connecting the center of gravity of the wind-turbine rotor blade () and a connecting portion, to which the hoisting wire () is connected, crosses the longitudinal axis of the wind-turbine rotor blade (); and a winch () that is disposed on the ground and that draws the hoisting wire () to wind up or let out the retaining portion ().