Method and system for performing operations on a wind turbine
First Claim
1. A method for performing operations on a wind turbine that involve handling heavy parts, said generator comprising a nacelle frame and a first hoist substantially permanently mounted on the nacelle frame, characterized in that it comprises the processes of:
- hoisting a second hoist on the nacelle frame by means of the first hoist, the second hoist being more powerful than the first hoist;
removably mounting the second hoist on the nacelle frame;
performing operations that involve handling heavy parts, employing the second hoist; and
removing from the nacelle frame the second hoist and lowering it with the first hoist.
9 Assignments
0 Petitions
Accused Products
Abstract
A wind turbine has a nacelle frame and a first hoist substantially permanently mounted on the frame. The method comprises the processes of hoisting a second, more powerful hoist and crane on the frame with the first hoist; removably mounting the second hoist and the crane on the nacelle frame; hoisting a winch using the second hoist and the crane on the frame, and removably mounting the winch on said frame; performing operations involving handling heavy parts employing said winch; and removing and lowering said winch, crane, and second hoist from the frame.
53 Citations
18 Claims
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1. A method for performing operations on a wind turbine that involve handling heavy parts, said generator comprising a nacelle frame and a first hoist substantially permanently mounted on the nacelle frame, characterized in that it comprises the processes of:
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hoisting a second hoist on the nacelle frame by means of the first hoist, the second hoist being more powerful than the first hoist; removably mounting the second hoist on the nacelle frame; performing operations that involve handling heavy parts, employing the second hoist; and removing from the nacelle frame the second hoist and lowering it with the first hoist. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for performing operations on a wind turbine that involve handling heavy parts, said wind turbine comprising a nacelle frame and a first hoist permanently mounted on the nacelle frame, said method comprising:
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lifting a second hoist on the nacelle frame using said first hoist, said second hoist being more powerful than said first hoist; removably mounting said second hoist on said nacelle frame; hoisting a cable winch on the nacelle frame by said second hoist; removably mounting said winch on said nacelle frame; performing operations that involve handling heavy parts employing said winch; removing and lowering said winch from said nacelle frame; and removing from said nacelle frame said second hoist and lowering it using said first hoist. - View Dependent Claims (14)
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15. A system for performing operations on a wind turbine that involve handling heavy parts, said wind turbine comprising:
- a nacelle frame;
said system comprising a first hoist substantially permanently mounted on said nacelle frame;
a second hoist adapted to be hoisted on said nacelle frame by said first hoist; and
a winch adapted to be hoisted on said nacelle frame by said second hoist;
said winch suitable for handling a part selected from the group consisting of;
a generator, a gearbox, and a transformer of said wind turbine. - View Dependent Claims (16)
- a nacelle frame;
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17. A nacelle frame assembly for a wind turbine, said assembly comprising:
- a nacelle frame;
a first hoist substantially permanently mounted on said nacelle frame;
a second hoist which is appropriate for being hoisted to said nacelle frame by said first hoist and temporarily mounted on said nacelle frame for performing operations that involve handling heavy parts when said nacelle frame is arranged on a wind turbine. - View Dependent Claims (18)
- a nacelle frame;
Specification