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公开(公告)号：US20240318633A1
公开(公告)日：2024-09-26
申请号：US18579124
申请日：2022-07-08
申请人： Itrec B.V.
CPC分类号： F03D13/104 , F03D13/126 , F03D13/25 , F05B2230/61 , F05B2230/6102
摘要： In the installation of a rotor blade in horizontal orientation to the hub of a horizontal axis offshore wind turbine, use is made of a blade motion synchronization and positioning device, which comprises a wind turbine coupler, a blade coupler, a motion arm between the wind turbine coupler and the blade coupler, and a controllable motion arm actuator assembly. The method includes bringing and maintaining the blade coupler in a motion compensated receiving position, wherein the arm is operated to compensate for sea state and/or wind induced tower top motion. In receiving position, the coupler is coupled to the blade that is suspended from a crane. The actuator assembly is then operated to gradually bring, and then maintain, the coupled blade in a horizontal motion that is synchronized with tower top motion, and to displace the coupled blade root into a pre-mounting position. Then a mounting motion is performed wherein the blade root is moved into a mounting position and the blade root is fastened to mounting structure by fasteners.
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公开(公告)号：US20240301869A1
公开(公告)日：2024-09-12
申请号：US18271182
申请日：2022-01-05
申请人： Itrec B.V.
CPC分类号： F03D13/25 , B63B35/44 , B63B75/00 , B63B77/10 , B66C23/185 , B66C23/52 , B63B2035/446 , F05B2230/6102 , F05B2240/95
摘要： The invention relates to a crane for assembly and installation of offshore wind turbines on an offshore location, to a vessel for assembly and installation of offshore wind turbines on an offshore location, and to a method for assembly and installation of offshore wind turbines on an offshore location. According to the invention the crane is provided with a base section and a top section, wherein the top section is rotatable supported by a bearing, and can be rotated with the wind turbine hoisting device relative to the base section about a vertical axis, wherein a first trolley guide is mounted to a top section of the installation crane for guiding a vertically mobile wind turbine supporting trolley. According to the invention the vessel is provided with one or more assembly stations on different sides of the installation crane.
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公开(公告)号：US12043523B2
公开(公告)日：2024-07-23
申请号：US17788236
申请日：2020-12-22
申请人： ITREC B.V.
CPC分类号： B66C13/08 , B66C23/185 , B66C23/52 , B66D3/08 , E02B17/08
摘要： A crane with a pivotal boom. The crane has a first and a second main hoisting system, which main hoisting system are configured for independent operation. Each system comprises a hoisting cable, an upper sheave block, a hoisting block assembly suspended from the upper sheave block by the hoisting cable in a multiple fall configuration, and a hoisting winch. The upper sheave blocks of the first and second main hoisting systems are each independently pivotable about a common pivot axis relative to the boom. Each hoisting block assembly comprises a hoisting block body, multiple fixed sheaves that are fixed on the hoisting block body, and multiple disconnectable sheave members, each disconnectable sheave member comprising a frame and at least one sheave rotatably supported by the frame.
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公开(公告)号：US11885298B2
公开(公告)日：2024-01-30
申请号：US17059828
申请日：2019-05-31
申请人： ITREC B.V.
CPC分类号： F03D13/25 , B66C23/52 , E02B17/021 , E02B2017/0039 , E02B2017/0065 , E02B2017/0091 , F05B2240/95
摘要： An offshore wind turbine installation vessel includes a crane provided with a computerized crane control system. The computerized crane control system is linked to the slew drive, the luffing drive, and the hoisting winch of the crane, and is programmed to perform a foundation pile installation routine providing a coordinated pattern of slew motion of the superstructure and of luffing motion of the boom structure, as well as operation of the hoisting winch so that the load connector of the crane moves from a foundation pile pick up position thereof, where the load connector is connected to the top end of a horizontally oriented foundation pile stored on a storage deck, to a foundation pile overhoarding position thereof, wherein the foundation pile is in vertical suspended from the load connector, outside of the hull.
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公开(公告)号：US20240017967A1
公开(公告)日：2024-01-18
申请号：US18114056
申请日：2023-02-24
申请人： ITREC B.V.
CPC分类号： B66C13/08 , B66C13/02 , B66C23/52 , B66C23/66 , B66C23/185 , B66C2700/03
摘要： A method for handling of an offshore wind turbine component includes using a vessel having a hull on which a motion compensating crane is mounted. The crane includes a main boom; a main boom luffing assembly; a mobile hoist cable suspension member; and a hoist winch and a hoist cable driven by the hoist winch. An object suspension device is suspended from the hoist cable. The mobile hoist cable suspension member is supported by a motion compensating support device that is fitted to the tip end of the main boom, the motion compensating support device including one or more motor powered motion displacement actuator assemblies and a motion compensating support device controller. The method includes connecting the offshore wind turbine component to the object suspension device; and operating the motion compensating support device to provide motion compensation in at least one direction of the object suspension device and the connected offshore wind turbine component. The crane is provided with one or more nacelle position detectors that are configured and operated to sense at least one of actual position and actual motion of the nacelle or of one or more components in or on the nacelle, and the one or more nacelle position detectors are linked to the motion compensating support device controller.
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公开(公告)号：US20230392584A1
公开(公告)日：2023-12-07
申请号：US18033097
申请日：2021-10-19
申请人： Itrec B.V.
CPC分类号： F03D13/256 , F03D13/126 , F03D13/139 , F03D13/112 , F05B2240/93 , F05B2240/95 , F05B2230/604
摘要： In an installation of a wind turbine on a floating foundation in floating condition and subject to sea-state induced motions, e.g. at the site of an offshore windfarm, use is made of a vessel with a crane arranged on the hull and provided with a hoisting system adapted to support the weight of the wind turbine and suspend the wind turbine from the crane. A heave compensation device compensates for sea-state induced heave motion of the wind turbine mast relative to the mast mounting structure of the floating foundation. Use is made of a mast alignment system configured to engage on the suspended wind turbine, e.g. on the mast of the suspended wind turbine, and to bring and maintain the mast of the wind turbine in alignment with the mounting axis of the floating foundation in order to compensate for sea-state induced motions, at least including tilt motions in one or more vertical planes, of the wind turbine mast relative to the mounting axis of the floating foundation.
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公开(公告)号：US20230348232A1
公开(公告)日：2023-11-02
申请号：US17800686
申请日：2021-02-17
申请人： ITREC B.V.
摘要： A tool and method for hoisting an longitudinal end of an offshore wind turbine component which is in a horizontal orientation. The tool is after being attached to a lifting block to be moved into a proximate position in which gripping members of the tool are longitudinally spaced from the longitudinal end but the radial contour of the tool at least overlaps with the radial contour of the longitudinal end. While the gripping members are in a retracted position guiding actuators can move the tool from the proximate position into a gripping position longitudinally aligned with the longitudinal end in which the gripping members are movable to engage said surface of the longitudinal end, thereby connecting the longitudinal end to the tool and suspending the longitudinal end from the lifting block so that the longitudinal end can consequently be hoisted.
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公开(公告)号：US20230331524A1
公开(公告)日：2023-10-19
申请号：US18013382
申请日：2021-06-29
申请人： ITREC B.V.
CPC分类号： B66C23/52 , B66C23/905 , B66C23/92 , B66C23/58 , B66C2700/084
摘要： A crane for use on an offshore vessel is provided with a boom restrainer, wherein the boom restrainer is a hydro-pneumatic boom restrainer, for reducing upward pivoting of the boom, when the boom is in the top zone, wherein the boom restrainer includes: multiple hydraulic cylinders, each having a hydraulic circuit and a cylinder rod with a cylinder head, wherein the cylinders are mounted on the crane structure with the cylinder heads directed towards the boom of the crane, preferably are mounted on a stay of the crane structure, a catcher for each hydraulic cylinder, wherein each catcher is mounted on the boom and is configured for receiving the cylinder head of the corresponding hydraulic cylinder, and to lock the cylinder head, preferably pivotable locks the cylinder head, relative to the boom, when the boom pivots upwards in the top zone; a gas buffer for each hydraulic cylinder, wherein each gas buffer is mounted to the corresponding hydraulic cylinder, and is connected to the hydraulic circuit of the corresponding hydraulic cylinder via a medium separator, wherein the gas buffer forces the hydraulic cylinder in an extended position, and wherein the volume ratio between the hydraulic cylinder and the gas buffer is such that the hydraulic cylinder acts as a progressive spring, e.g. the gas buffers each have a size in the range of 1000-1400 litre, for example 1200 litre and the hydraulic cylinders each have a size in the range of 800-1000 litre, for example 900 litre, and preferably the ratio between the volume of the gas buffer and the volume of the associated hydraulic cylinder is 4:3.
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公开(公告)号：US20230203897A1
公开(公告)日：2023-06-29
申请号：US17925704
申请日：2021-05-21
申请人： ITREC B.V.
摘要： An offshore vessel for performing offshore subsea wellbore related activities, for example for drilling a subsea wellbore includes a drilling tower. A method for drilling a subsea wellbore includes using an offshore vessel and a method for tripping a tubulars string is disclosed. The offshore vessel is provided with a hoisting system which has a first configuration, wherein a hoisting cable is connected to a working deck and a second configuration wherein said hoisting cable is connected to a traveling block. The system allows for efficient tripping in and tripping out.
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公开(公告)号：US11536314B2
公开(公告)日：2022-12-27
申请号：US16636187
申请日：2018-08-03
申请人： ITREC B.V.
摘要： A slew bearing includes a stationary bearing ring to be fixed to a base, and a moveable bearing ring to be fixed to a moveable object, wherein the stationary bearing ring and the moveable bearing ring are configured to enable rotation of the moveable bearing ring relative to the stationary bearing ring about a rotation axis. A main axial bearing and an auxiliary bearing are provided between the stationary bearing ring and the moveable bearing ring, wherein the moveable bearing ring includes one or more main portions and one or more auxiliary portions, which one or more main portions are moveable relative to the one or more auxiliary portions between an operational position, in which the main axial bearing transfers the axial loads between moveable bearing ring and stationary bearing ring, and a raised maintenance position, in which the auxiliary axial bearing transfers the axial loads between moveable bearing ring and stationary bearing ring and the main bearing is allowed to be inspected and/or maintained so that the slew bearing during inspection and/or maintenance is still operational.
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