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公开(公告)号：US12104578B2
公开(公告)日：2024-10-01
申请号：US18420859
申请日：2024-01-24
Applicant: LIFTRA IP APS
Inventor： Per E. Fenger
CPC classification number: F03D80/50 , B23B31/101 , F03D13/10 , F03D13/139 , B23B31/16 , F03D80/70 , F05B2230/60 , F05B2230/61 , F05B2230/80 , F05B2240/60 , F05B2260/30 , F05B2260/31 , F16C35/062 , F16C2360/31 , Y02P70/50 , Y10T279/1274 , Y10T279/1291 , Y10T279/1986
Abstract: A main shaft fixture for fixing a main shaft on a wind turbine during installation and repair work on heavy parts of the wind turbine nacelle, in the case where the fixture is formed of several sections for mounting on stable structural parts in the nacelle, including the nacelle's bottom frame. The main shaft fixture has adjustable pressure mandrels with tap shoes, which cause the fixture to be usable regardless of the turbine main shaft geometry, such that it can be mounted without fixing the rotor. The main shaft fixture also has facilities for mounting of a lightweight crane and a self-hoisting crane with a ground-based winch, respectively, as well as a rotor lock which, in combination with actuators of the main shaft fixture, enables the main shaft and the main shaft bearing to be sufficiently displaced vertically from its bearing in the nacelle to service or replace the bearing.
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公开(公告)号：US20240209842A1
公开(公告)日：2024-06-27
申请号：US18420859
申请日：2024-01-24
Applicant: LIFTRA IP APS
Inventor： Per E. FENGER
CPC classification number: F03D80/50 , B23B31/101 , F03D13/10 , F03D13/139 , B23B31/16 , F03D80/70 , F05B2230/60 , F05B2230/61 , F05B2230/80 , F05B2240/60 , F05B2260/30 , F05B2260/31 , F16C35/062 , F16C2360/31 , Y02P70/50 , Y10T279/1274 , Y10T279/1291 , Y10T279/1986
Abstract: A main shaft fixture for fixing a main shaft on a wind turbine during installation and repair work on heavy parts of the wind turbine nacelle, in the case where the fixture is formed of several sections for mounting on stable structural parts in the nacelle, including the nacelle's bottom frame. The main shaft fixture has adjustable pressure mandrels with tap shoes, which cause the fixture to be usable regardless of the turbine main shaft geometry, such that it can be mounted without fixing the rotor. The main shaft fixture also has facilities for mounting of a lightweight crane and a self-hoisting crane with a ground-based winch, respectively, as well as a rotor lock which, in combination with actuators of the main shaft fixture, enables the main shaft and the main shaft bearing to be sufficiently displaced vertically from its bearing in the nacelle to service or replace the bearing.
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公开(公告)号：US20190309732A1
公开(公告)日：2019-10-10
申请号：US16334838
申请日：2017-09-20
Applicant: LIFTRA IP APS
Inventor： Per Eske FENGER
Abstract: A rotor blade replacement system for mounting and/or unmounting of a rotor blade in a wind turbine, and a method for replacing, installing or detaching a rotor blade. The blade replacement system has first and second clamps for detachable attachment to a rotor blade at a first position near a rotor hub mounting end of the rotor blade and at a second position near the tip of the rotor blade. The clamps have substantially U-shaped frame elements with a fixed first leg and a second leg which is rotatably and lockably mounted to a base portion of the frame elements. The second leg is displaceable between open and closed positions by a first actuator. The U-shaped frame element at least partially encloses and clamps the rotor blade, wherein the first and second legs have at least one pulley for interacting with a wire from a winch placed on the ground.
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公开(公告)号：US10378518B2
公开(公告)日：2019-08-13
申请号：US15517288
申请日：2015-10-06
Applicant: LIFTRA IP APS
Inventor： Per E. Fenger
Abstract: A main shaft fixture for fixing a main shaft on a wind turbine during installation and repair work on heavy parts of the wind turbine nacelle, in the case where the fixture is formed of several sections for mounting on stable structural parts in the nacelle, including the nacelle's bottom frame. The main shaft fixture has adjustable pressure mandrels with tap shoes, which cause the fixture to be usable regardless of the turbine main shaft geometry, such that it can be mounted without fixing the rotor. The main shaft fixture also has facilities for mounting of a lightweight crane and a self-hoisting crane with a ground-based winch, respectively, as well as a rotor lock which, in combination with actuators of the main shaft fixture, enables the main shaft and the main shaft bearing to be sufficiently displaced vertically from its bearing in the nacelle to service or replace the bearing.
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5.发明申请公开(公告)号：US20240367950A1
公开(公告)日：2024-11-07
申请号：US18558242
申请日：2022-05-03
Applicant: LIFTRA IP APS
Inventor： Per Eske Fenger
Abstract: A base for supporting a portable crane for handling components of a wind turbine is described. The base is mountable on the wind turbine, and configured to be switched between a first configuration and a second configuration. In the first configuration the base is configured for being supported by a main bearing of the wind turbine to allow the portable crane to lift a gearbox of the wind turbine. In the second configuration the base is configured for being supported by a bed plate of a nacelle of the wind turbine to allow the portable crane to lift the main bearing. The base is configured for supporting the portable crane while switching between the first configuration and the second configuration. A method for removing a main bearing of a wind turbine is also disclosed.
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Patent Agency Ranking
公开(公告)号：US20230303366A1
公开(公告)日：2023-09-28
申请号：US17494666
申请日：2020-02-11
Applicant: LIFTRA IP APS
Inventor： Per FENGER
CPC classification number: B66C23/207 , B66C1/108 , F03D13/10 , F03D80/50 , F05B2230/61
Abstract: A crane system for moving a burden, such as a wind turbine component, between the nacelle or rotor of a wind turbine and a location at a lower end of the wind turbine at a distance from the wind turbine, wherein the crane system includes a crane, said crane being adapted to be mounted near or in the nacelle of the wind turbine, wherein said crane includes a boom and wherein the crane has at least one rotational axis, about which sections of the crane can rotate. The disclosure further relates to a method for moving a burden, such as a wind turbine component, between the nacelle or rotor of a wind turbine and a location at a lower end of the wind turbine at a distance from the wind turbine.
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公开(公告)号：US20230079878A1
公开(公告)日：2023-03-16
申请号：US17777782
申请日：2020-06-18
Applicant: LIFTRA IP APS
Inventor： Per E. FENGER , Alexander Becsei Christiansen
Abstract: Method for lifting a wind turbine component The present invention relates to a method for lifting a wind turbine component, such as a rotor blade (2), gearbox or a rotor, with a lifting yoke (10) comprising a first structural body (20) comprising a crane hook attachment point (21), a first connection point (22) and a second connection point (23), a second structural body (30) comprising a third connection point (31) and a fourth connection point (32). First and second tensional elements (24, 25) such as slings or wires, are connected to the connection points, the length of the second tensional element being variable. An inertial measurement unit (40) determines the angle of the second structural body to the horizontal and the angle of the second tensional element is determined by an angle sensor. The distance (D) from the fourth connection point to the intersection between an axis (V) extending vertically through the center of gravity of the wind turbine component and the lifting plane is determined and provided to a crane operator. The invention also concerns a corresponding yoke.
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公开(公告)号：US11092139B2
公开(公告)日：2021-08-17
申请号：US16334838
申请日：2017-09-20
Applicant: LIFTRA IP APS
Inventor： Per Eske Fenger
Abstract: A rotor blade replacement system for mounting and/or unmounting of a rotor blade in a wind turbine, and a method for replacing, installing or detaching a rotor blade. The blade replacement system has first and second clamps for detachable attachment to a rotor blade at a first position near a rotor hub mounting end of the rotor blade and at a second position near the tip of the rotor blade. The clamps have substantially U-shaped frame elements with a fixed first leg and a second leg which is rotatably and lockably mounted to a base portion of the frame elements. The second leg is displaceable between open and closed positions by a first actuator. The U-shaped frame element at least partially encloses and clamps the rotor blade, wherein the first and second legs have at least one pulley for interacting with a wire from a winch placed on the ground.
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公开(公告)号：US20210190042A1
公开(公告)日：2021-06-24
申请号：US17270812
申请日：2019-09-13
Applicant: LIFTRA IP APS
Inventor： Per Eske FENGER
Abstract: A rotor blade clamping tool includes a first and a second clamping element connected by by a clamping mechanism and each including a first and a second balancing lever being arranged pivotally about a pivot axis and having a first end flexibly connected with a corresponding first rotor blade contacting surface and a second end flexibly connected with a corresponding second rotor blade contacting surface. At least one clamping element includes a main balancing lever arranged pivotally about a main pivot axis and having a first end on which the corresponding first balancing lever is arranged pivotally and a second end on which the corresponding second balancing lever is arranged pivotally. First and second balancing levers arranged on the same main balancing lever are aligned in their longitudinal direction.
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10.发明申请公开(公告)号：US20240418151A1
公开(公告)日：2024-12-19
申请号：US18821565
申请日：2024-08-30
Applicant: LIFTRA IP APS
Inventor： Per Eske FENGER
Abstract: A crane comprising a base portion, two arms displaceably connected to the base portion and a lifting boom displaceably connected to the base portion, said lifting boom being provided with a lifting wire and a lifting member, for example a lifting hook, for lifting a load, wherein the two arms and the base portion in combination comprise at least three tower flange connection elements arranged to be detachably connectable to cooperating crane connection elements on a flange of a wind turbine tower section, wherein each arm comprises one of the tower flange connection elements, and wherein the vertical distance between any two tower flange connection elements in the normal operating position of the crane is less than 1 m, less than 50 cm or less than 25 cm. In this way a crane is provided which can be attached to a flange located at the upper portion of a tower section.
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