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This is a record of a document published elsewhere, first published by the AU patent office, as AU-2021454752-B2, on 12 February 2026. OpenTechnical did not first disclose it. The identifier, hashes and timestamps below record what this library served and when, not when the material became public. View the original.

OT-2026-000002931

Method for lifting and lowering blades without using a crane, and devices used

Published
Permanent URL
Classification
Lifting, Positioning & Manipulation › Lift Tables and Positioners
Inventors
AROCENA DE LA RÚA, FERNÁNDEZ GARCÍA ANA, IRIARTE ELETA JAVIER, SANZ PASCUAL ENEKO
Assignee
Nabrawind Technologies SL
Original source
AU-2021454752-B2, the AU patent office, 12 February 2026
Document SHA-256
02d1a1a2c15456714dbddc0e53a1f37ac2de558f2f6fd8bea9fe68409d507547

Abstract

Disclosed is a method for lifting and lowering blades without using a crane, which uses an aligning and inserting device to solve the problem caused by the tilt and coning of the first/last 200-400 mm of the blade. The device comprises at least one hoist (4) and a pair of cables (5) coordinated by a pulley (10) and screwed to a bearing (12) by means of connecting elements at the ends thereof. The cables (5) are screwed diametrically opposite and as close as possible to the centre of gravity (CG) of the blade. After the initial descent, the blade is secured and a stiffening plate (20) is added to the blade root (13), and the lowering device, formed by a drumless hoist (18) and a set of pulleys (19), is used to lower the blade by means of a passing cable (22) joined to the plate (20). A crane disposed on the ground moves an auxiliary sling placed on the tip (23) of the blade and helps to navigate the transition piece (24) and bottom part (25) of a tower.

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Citation

OpenTechnical Publication OT-2026-000002931, “Method for lifting and lowering blades without using a crane, and devices used,” published September 15, 2026 at 19:16:13 UTC, https://opentechnical.org/p/OT-2026-000002931.

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