When mounting blades (22, 24) on wind turbines of the kind that not include gearboxes, problems will occur performing mounting the blades, as the turbine hub can't be rotated during the assembly. This often results in time- and cost-consuming movements of the lifting cranes to lift the blades to and from their connection points on the turbine hub (26). In addition, the prior art assembly methods result in, that the blade is not introduced perpendicular into the hub, causing the need for complicated operations with the lifting crane. There is provided a method to solve said issues comprising a rotation of the nacelle (40) between mounting the blades, resulting in a direct introduction of the blade in the hub, which operates with a short crane outrigger arm (32), and where no need for movement of the lifting crane (30).
There is defined a tool (2) for handling heavy and relatively long items, in particular blades (4) for wind turbines, and comprising a first frame(30) with a connecting arrangement (28) which consists of a second frame (30) with means (38) for connection to a wire (40) connected to a crane or hoist for hoisting of the first frame and the blade (4), said first frame (6) further comprises gripping means (8, 10) for engagement of the blade surface (12), and comprising a connecting arrangement (28) for hoisting the first frame (6) and the wind turbine blade (6) with a crane, which is characterized in, that gripping organs (8, 10) is displaceable mounted on the frame (6), and there is a yaw (50) located between the first frame (6) and the connection arrangement (28), and where connection arrangement comprises a yoke (32) driven by an actuator, whereby handling of a wind turbine blade (4) between a transport and an optional mounting location on a wind turbine can be performed.
F03D 1/00 - Mécanismes moteurs à vent avec axe de rotation sensiblement parallèle au flux d'air pénétrant dans le rotor
B66C 1/42 - Organes de saisie engageant uniquement les faces externes ou internes des objets
B66C 1/62 - Éléments ou dispositifs de prise de la charge adjoints aux mécanismes de levage, de descente ou de halage, ou adaptés pour être utilisés avec ces mécanismes et transmettant les efforts à des articles ou à des groupes d'articles par moyens mécaniques comportant des organes de saisie ayant une forme complémentaire de celle des objets à manipuler
A fixture for attachment of an end of a member, such as a wind turbine tower section, blade or hub for a wind turbine characteristically has an end flange. To enable clamping while being able to compensate for different hole patterns in the flanges, by the invention, the fixture provides for retaining of ends of members with flanges, regardless of flange diameter and hole patterns, and which is also quickly and easily installed. Additionally, it is possible to firmly clamp the flange end to upstanding frame parts of the fixture with fastening elements, thereby providing a stable connection between a console of the fixture and the upstanding frame parts.
B60P 7/12 - Fixation au plancher ou aux parois du véhicule la charge consistant en troncs d'arbres, poutres, fûts, tubes ou objets similaires
F03D 1/00 - Mécanismes moteurs à vent avec axe de rotation sensiblement parallèle au flux d'air pénétrant dans le rotor
F03D 11/00 - Détails, parties constitutives ou accessoires non couverts par les autres groupes de la présente sous-classe ou présentant un intérêt autre que celui visé par ces groupes
4.
DEVICE FOR ESTABLISHING ADMITTANCE AND TRANSPORT OF CARGO TO AND FROM A WIND TURBINE CONSTRUCTION ABOVE GROUND LEVEL
In connection with maintenance and inspection of wind turbines there is frequently used mobile cranes for lifting heavy cargo between terrain level (6) and the nacelle, which is expensive, and often inappropriate due to the relative long crane arm. There is disclosed a device (2) for establishing admittance and transport of cargo to and from a wind turbine construction (4) above ground level (6) and comprising a part (8) which can be raised and lowered and/or by wires (10) and winches (16) located in terrain level (6) connected with snatch blocks (14) attached to a part of the construction (4) can be raised and/or lifted in relation to the construction (4). The part comprises a number of travelling crabs (18) according to the numbers of winches (12) and the special feature is that the travelling crabs (18) are guided of the wires (10) between the winches (12) and the snatch blocks (14), and that the part (8) with the travelling crabs (18) are displaced upwards or downwards by said wires (10). Hereby is achieved the advantage that the wires (10) are used as well to hoisting the part, and as guide for the travelling crabs (18).
Hydraulic motor or pump (2) that generates relatively high torque, and further allows a high specific displacement that makes the motor suitable yaw motor for large wind turbines of horizontal axis wind turbines or wheel yaw motor on heavy carriers. The motor or pump comprises a first and a second body, which in association with definitive boundaries, limits an annular cavity with a constant cross-section opening in relation to the center of the annular cavity, where the first body is static and the second body is rotatable, or vice versa and where the annular cavity is connected with passages, respectively to a hydraulic pressure side and a pressure neutral side, and where the first and the second body comprises evenly spaced radial projecting protrusions which connects the bodies and divides up the annular cavity in a number of chambers which alternately are put on hydraulic pressure and are pressure neutral. The characteristic by the hydraulic motor or pump (2) is that if the number of barriers in the annular cavity (12) of engine or pump is n, then the number of radial displaceable sliders (20) will be larger than (n +1).
F01C 1/344 - "Machines" ou machines motrices à piston rotatif ayant des caractéristiques couvertes par au moins deux des groupes , , , ou par l'un de ces groupes associées à un autre type de mouvement entre les organes coopérants ayant à la fois le mouvement défini dans le groupe ou et un mouvement alternatif entre les organes coopérants comportant des organes obturateurs se déplaçant par rapport à l'organe interne
F01C 1/356 - "Machines" ou machines motrices à piston rotatif ayant des caractéristiques couvertes par au moins deux des groupes , , , ou par l'un de ces groupes associées à un autre type de mouvement entre les organes coopérants ayant à la fois le mouvement défini dans le groupe ou et un mouvement alternatif entre les organes coopérants comportant des organes obturateurs se déplaçant par rapport à l'organe externe
F04C 2/352 - Machines ou pompes à piston rotatif possédant les caractéristiques couvertes par au moins deux des groupes , , , ou par l'un de ces groupes en combinaison avec un autre type de mouvement entre les organes coopérants avec à la fois le mouvement défini dans l'un des groupes ou et un mouvement alternatif relatif entre les organes coopérants les organes obturateurs ayant un mouvement alternatif par rapport à l'organe interne les organes obturateurs pivotant sur l'axe de l'organe externe
F04C 2/356 - Machines ou pompes à piston rotatif possédant les caractéristiques couvertes par au moins deux des groupes , , , ou par l'un de ces groupes en combinaison avec un autre type de mouvement entre les organes coopérants avec à la fois le mouvement défini dans l'un des groupes ou et un mouvement alternatif relatif entre les organes coopérants les organes obturateurs ayant un mouvement alternatif par rapport à l'organe externe
Fixture for use for attachment of an end (6, 8, 10, 12) of a member, such as a wind turbine tower section, a blade or a hub for a wind turbine. Characteristic for said members 2, 2' is that they comprises a flange (40) in the end, to which hitherto has been normal to attach the fixture by tightening common bolts, passed through holes in the fixture and the flanges. To enable the clamping in practice, and to be able to compensate for different hole patterns in the flanges, there has been developed different fixtures with compensating abilities for the placement of the holes in the fixture, which has lead to slow assembly work in mounting the known fixtures, as well as it not has been possible to adapt the known fixtures to all hole patterns and flange sizes. By the invention there is disclosed a solution on said problems by specifying a fixture (4), which provides for retaining of ends of members with flanges, regardless of flange diameter and hole patterns, and which also is faster to install. Additional the invention provides a possibility for clamping of the flange end to firm attachment with upstanding frame parts (16, 116), and fastening means (80) providing possibility for a stable connection between a console (14, 36) and said upstanding frame parts (16, 116).
F03D 11/00 - Détails, parties constitutives ou accessoires non couverts par les autres groupes de la présente sous-classe ou présentant un intérêt autre que celui visé par ces groupes
B65D 69/00 - Objets groupés pour commodité de stockage ou de transport sans utiliser d'éléments d'emballage
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