Mechanical emergency brake for wind turbines and method for operating same
First Claim
1. A cassette for receiving a spiral spring for a wind turbine, the spiral spring comprising a first connector configured to connect an outer end of the spiral spring to a retention pin, the first connector being rotatable about the retention pin when being coupled to the retention pin, the spiral spring further comprising a second connector configured to connect an inner end of the spiral spring to a drive shaft of the wind turbine, said cassette comprising:
- an upper part,a lower part, andseparators disposed between said upper and lower parts, wherein each of said upper and lower parts has a central bore for receiving the drive shaft of the wind turbine, and wherein each of said upper and lower parts further has a hole at a periphery thereof and configured to receive the retention pin.
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Accused Products
Abstract
A mechanical emergency brake for a wind turbine is provided, said mechanical emergency brake comprising a spiral spring with a loop at its outer end, a cassette for accommodating said spring and a casing for receiving said cassette and said spring, wherein said casing comprises a retention pin to which the loop of the spring can be fixed.
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Citations
23 Claims
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1. A cassette for receiving a spiral spring for a wind turbine, the spiral spring comprising a first connector configured to connect an outer end of the spiral spring to a retention pin, the first connector being rotatable about the retention pin when being coupled to the retention pin, the spiral spring further comprising a second connector configured to connect an inner end of the spiral spring to a drive shaft of the wind turbine, said cassette comprising:
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an upper part, a lower part, and separators disposed between said upper and lower parts, wherein each of said upper and lower parts has a central bore for receiving the drive shaft of the wind turbine, and wherein each of said upper and lower parts further has a hole at a periphery thereof and configured to receive the retention pin. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A spring unit for a mechanical emergency brake of a wind turbine, comprising a spiral spring comprising a first connector connecting an outer end of the spiral spring to a retention pin, the first connector being rotatable about the retention pin when being coupled to the retention pin, the spiral spring further comprising a second connector connecting an inner end of the spiral spring to a drive shaft of the wind turbine, and
a cassette for accommodating the spiral spring, the cassette comprising an upper part, a lower part, and separators disposed between said upper and lower parts, wherein said upper and lower parts have a central bore for receiving the drive shaft, and wherein said upper and lower parts further comprise a locking means configured to receive the retention pin.
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8. A casing for a spring energy storage used in a mechanical emergency brake for a wind turbine, comprising:
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a lower wall; a side wall; a drive shaft to which an inner fixing means of a spiral spring can be fixed; a retention means to which an outer fixing means of the spiral spring can be fixed; and a top cover; wherein said casing is configured to receive a spring unit comprising a cassette and the spiral spring which is accommodated in the cassette, the cassette comprising; an upper part having a first central bore for receiving the drive shaft; a lower part having a second central bore for receiving the drive shaft separators disposed between the upper part and the lower part; and a locking means configured to receive the retention means, the outer fixing means of the spiral spring being configured to be rotatable about the retention means when being affixed thereto. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification