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    METHOD FOR LIFTING AND LOWERING BLADES WITHOUT USING A CRANE, AND DEVICES USED
    5.
    发明公开
    METHOD FOR LIFTING AND LOWERING BLADES WITHOUT USING A CRANE, AND DEVICES USED 审中-实审

    公开(公告)号：EP4368831A1

    公开(公告)日：2024-05-15

    申请号：EP21948701.4

    申请日：2021-07-06

    Applicant: Nabrawind Technologies SL

    Inventor： IRIARTE ELETA, Javier ,  FERNÁNDEZ GARCÍA, Ana ,  SANZ PASCUAL, Eneko ,  AROCENA DE LA RÚA,, Ion

    IPC: F03D13/10 ,  F03D80/50

    CPC classification number: F03D80/50 ,  F03D13/10 ,  Y02E10/72

    Abstract: Disclosed is a method for lifting and lowering blades with-out using a crane, which uses an aligning and inserting device to solve the problem caused by the tilt and coning of the first/last 200-400mm 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 grounds 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 the tower.

    PRESTRESSING DEVICE, AND A RELATED ARRANGEMENT, WIND TURBINE, AND METHOD
    8.
    发明公开
    PRESTRESSING DEVICE, AND A RELATED ARRANGEMENT, WIND TURBINE, AND METHOD 审中-公开

    公开(公告)号：EP4357614A1

    公开(公告)日：2024-04-24

    申请号：EP22202100.8

    申请日：2022-10-18

    Applicant: Siemens Gamesa Renewable Energy A/S

    Inventor： Kondoju, Naresh Kumar ,  Mortensen, Kenneth Oestergaard ,  Quinn, Thomas F.

    IPC: F03D80/00

    CPC classification number: F03D80/50 ,  F05B2260/7920130101 ,  F05B2240/5020130101 ,  F16B13/00 ,  F03D80/703

    Abstract: Prestressing device designed to be inserted into a hole (7) in a component (8) to suppress an ovalization of the hole (7) when the component (8) is loaded, wherein the prestressing device (1) comprises a sleeve (6) and a tensioning mechanism (9), wherein the prestressing device (1) is designed to be inserted into the hole (7) along an insertion axis (10), wherein the tensioning mechanism (9) is designed to deform the sleeve (6) in such a way, that the diameter (11) of the outer surface (12) of the sleeve (6) in the radial direction with respect to the insertion axis (10) can be increased from a first diameter to a second diameter in at least one axial section of the sleeve (6) by actuating the tensioning mechanism (9), allowing the outer surface (12) of the sleeve (6) to exert a force (13) in the radial direction onto the surface (14) of the component (8) delimiting the hole (7) and therefore prestressing the component (8), when the axial section of the sleeve (6) is arranged in the hole (7) and the diameter (37) of the hole (7) prior to the actuation of the tensioning mechanism (9) is lower than the second diameter.

    DEVICE FOR ENABLING ACCESS TO A STRUCTURE ABOVE GROUND LEVEL
    10.
    发明授权
    DEVICE FOR ENABLING ACCESS TO A STRUCTURE ABOVE GROUND LEVEL 有权

    公开(公告)号：EP1974109B1

    公开(公告)日：2018-12-12

    申请号：EP07702460.2

    申请日：2007-01-29

    Applicant: PP Energy ApS

    Inventor： TEICHERT, Paul

    IPC: E04G3/30 ,  F03D1/00

    CPC classification number: E04G3/30 ,  F03D80/50 ,  F03D80/55 ,  Y02E10/726

    Abstract: A device for enabling access to a structure above ground or sea level, in particular a rotor blade of a wind turbine, by lowering and/or lifting the device in relation to the structure, the device including a frame structure,-means for supporting the device in relation to the structure, and-means for lowering and/or lifting the device in relation to the structure, where at least part of the frame structure includes a track portion, the track portion being adapted to guide an, in relation to the track portion, movable object along the track portion, where the means for supporting the device in relation to the structure are configured for positioning the device in relation to the structure, and the means for supporting the device in relation to the structure are configured for facilitating a movement of the device essentially in the longitudinal direction of the structure.

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