A boom assembly for a hoist may include a flat surface configured to elastically deform in response to a load on the hoist, and a strain sensor coupled to the flat surface and configured to generate an electronic signal.

A bollard setting and installation system for efficiently installing a bollard wall without any restrictions relating to proximity to water or flood plains. The bollard setting and installation system generally includes a setting frame which is positioned on a ground surface. A plurality of bollards is positioned on the setting frame in a desired spacing and orientation to form a bollard wall. A vehicle having a vehicle arm connected to a lifting frame is positioned such that the bollards are secured to the lifting frame by clamps in the desired spacing and orientation. The vehicle may then move the lifting frame to position the lower ends of the bollards in an opening in the ground surface. Concrete may be poured to encapsulate the lower ends of the bollards. The lifting frame may then be removed, with the bollard wall being free-standing in the ground surface.

A tower crane for assembling a wind turbine includes a boom assembly including a boom and a hoisting block coupled to the boom, an extendable tower assembly including a plurality of tower sections, and a transport assembly including a central support frame coupled to the tower assembly, a self-propelled transporter configured to transport the tower crane, and a diagonal brace extending between the central support frame and the transporter, wherein the diagonal brace includes a linear actuator configured to selectably extend and retract the diagonal brace.

The present invention relates to a system for reducing fine dust floating in the air and, more specifically, to a system for reducing fine dust, the system comprising: a plurality of cranes installed side by side and standing on, for example, a bridge or a riverside; water spray nozzles for obliquely spraying water drop particles up to a height of 80 to 130 m, respectively, from the upper ends of the cranes; water supply means for supplying high-pressure water to the water spray nozzles; and a control unit for controlling each of the cranes, the water spray nozzles, and the water supply means. By forming continuous artificial water walls, having a width of 30 to 60 m and made of the water drop particles sprayed from the water spray nozzles, in a region through which fine dust passes, pleasant living spaces free of fine dust can at least be provided in major living spaces within 40 to 60 m above ground level.

The present invention relates to a system for reducing fine dust floating in the air and, more specifically, to a system for reducing fine dust, the system comprising: a plurality of cranes installed side by side and standing on, for example, a bridge or a riverside; water spray nozzles for obliquely spraying water drop particles up to a height of 80 to 130 m, respectively, from the upper ends of the cranes; water supply means for supplying high-pressure water to the water spray nozzles; and a control unit for controlling each of the cranes, the water spray nozzles, and the water supply means. By forming continuous artificial water walls, having a width of 30 to 60 m and made of the water drop particles sprayed from the water spray nozzles, in a region through which fine dust passes, pleasant living spaces free of fine dust can at least be provided in major living spaces within 40 to 60 m above ground level.

Provided is a lifting arrangement configured to facilitate alignment of a load with a wind turbine assembly. The lifting arrangement includes a crane arrangement for hoisting the load to the wind turbine assembly, a tagline arrangement for stabilizing the load during a lifting manoeuvre, a sensor arrangement configured to detect a motion of the wind turbine assembly relative to the load during the lifting manoeuvre, an actuator arrangement for adjusting the position of the load relative to the wind turbine assembly, and a control arrangement for controlling actuators of the actuator arrangement to reduce the detected relative motion. Also provided is a method of aligning a load with a wind turbine assembly.

Provided is a method for installing components of a wind turbine, with a lifting device for lifting the respective component hanging at the lifting device via at least one cable, whereby at least one stabilization device is stabilizing the component against vibrations induced by external forces by a gyroscopic effect.

The systems and methods for assembling and installing multiple wind turbines from a single vessel are provided. Generally, the different embodiments use wind turbine components on the vessel that include blades, a nacelle assembly having a rotating hub, and a tower. A Turbine Installation Gantry System (T.I.G.S.) embodiment uses a gantry system having a truss sub-structure and at least one bridge crane on the elevated vessel for assembling the wind turbine blades on board to the nacelle hub supported above the seabed. A Skidding Turbine Installation Crane (S.T.I.C.) embodiment has a rotatable crane mounted on a skidding pedestal or cantilever structure to provide full access to the vessel deck and the blades outboard of the vessel for assembling each of the blades with the assembled nacelle assembly outboard. A Turbine Assembly and Positioning System (T.A.P.S.) embodiment includes a handling system and a crane both mounted onto a skidding cantilever structure for fastening blades to an assembled tower section and nacelle hub suspended cantilevered outboard of the vessel by the handling system. A combination embodiment uses selected components and systems from the T.I.G.S., S.T.I.C. and T.A.P.S. embodiments to provide redundancy and simultaneous movements of components and systems.

A method for mounting a blade root of a blade on a blade flange of a wind turbine rotor, the method comprising:—attaching a control line between a hold structure at the blade flange and the blade root; —lifting the blade with a blade lifting crane while the blade root is guided towards the blade flange by use of said control line, and—connecting said blade root to said blade flange.

A method for mounting a blade root of a blade on a blade flange of a wind turbine rotor, the method comprising: attaching a control line between a hold structure at the blade flange and the blade root; lifting the blade with a blade lifting crane while the blade root is guided towards the blade flange by use of said control line, and connecting said blade root to said blade flange.