Element for lifting the blade and method followed
AssigneeGamesa Innovation & Technology, S. L.
InventorsIon Arocena De La Rua, Eneko Sanz Pascual
Life of this patent
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Abstract
A blade hoisting element is an intermediate piece placed between the root of the blade and the mobile track of the blade bearing. This piece comprises at least an insert and joins, by a rigid rod or strut with another intermediate piece opposing diametrically. The piece has a hole for connecting to the hoisting point and another hole for connecting to the hub, this latter fastening to the hole of the insert by a long bolt. Two hoisting points are established on the blade, at its root and at the tip; the hoisting point at the root is handled from a single lift point on the hub and the hoisting point at the tip is handled from two lift points: one from the hub and the other from the ground.
Claims17
A blade hoisting element with at least one cable or sling for lifting a blade of a wind turbine, wherein
- the blade hoisting element comprises at least two intermediate pieces facing each other and fastened to a lower edge of a root of the blade,
- each intermediate piece comprises at least a single insert that aligns with a hub-connection hole of the root of the blade,
- each intermediate piece has a hoisting point connection hole and a joint element that extends between each diametrically opposed intermediate piece when the at least two intermediate pieces are fastened to the lower edge of the root of the blade,
- wherein each intermediate piece is fastened to a mobile track of a hub bearing by a long bolt cooperating with a threaded hole of the mobile track at one of its ends and with the intermediate piece at the other end.
A blade hoisting element with at least one cable or sling for lifting a blade of a wind turbine, wherein
- the blade hoisting element comprises at least two intermediate pieces facing each other and fastened to a lower edge of a root of the blade,
- each intermediate piece comprises at least a single insert that aligns with a hub-connection hole of the root of the blade,
- each intermediate piece has as many inserts as hub-connection holes covered by the intermediate piece,
- each intermediate piece has a hoisting point connection hole and a joint element that extends between each diametrically opposed intermediate piece when the at least two intermediate pieces are fastened to the lower edge of the root of the blade,
- the fastening of the intermediate piece to the blade root is carried out first by threading at least one machined insert inside the intermediate piece and then fastening the intermediate piece onto the blade root by using a fastening element, wherein
- the fastening of the intermediate piece to a mobile track of a hub bearing is made by a long bolt co-operating with a threaded hole of the mobile track at one of its ends while the other end of the long bolt is screwed onto the interior of the machined insert.
A blade hoisting element with at least one cable or sling for lifting a blade of a wind turbine, wherein
- the blade hoisting element comprises at least two intermediate pieces facing each other and fastened to a lower edge of a root of the blade,
- each intermediate piece comprises at least a single insert that aligns with a hub-connection hole of the root of the blade,
- each intermediate piece has a hoisting point connection hole and a joint element that extends between each diametrically opposed intermediate piece when the at least two intermediate pieces are fastened to the lower edge of the root of the blade,
- wherein the joint element of each intermediate piece is at least a rigid rod extending between the hoisting point connection holes of the two diametrically opposed intermediate pieces or is at least a strut extending from the wall of the intermediate piece and which is perpendicular to the hub-connection hole and the hoisting point connection hole,
- wherein each intermediate piece is fastened to a mobile track of a hub bearing by a long bolt cooperating with a threaded hole of the mobile track at one of its ends and an intermediate piece at the other end.
Dependencies are inferred from the claim text.