The system (1) for lifting and controlling the horizontal orientation and/or position of components (90), such as wind turbine main components, during installation and/or dismounting of said components comprises: a crane boom arrangement (3) and one or more lifting lines (3a) guided by said crane boom arrangement (3) for lifting said components. The system moreover comprises a lifting device (10) comprising a crane connection arrangement (11) connected to said one or more lifting lines (3a), a frame arrangement (12) connected to said crane connection arrangement (11), a first and a second steering wire guide (13a, 13b) configured for guiding steering wires (20a, 20b), and a component connection arrangement (30) connected to said frame arrangement and configured to be connected directly or indirectly to the component to be lifted. The system (1) further comprises a guiding arrangement (4) connected to said crane boom arrangement (3), and said steering wires (20a, 20b) are connected to said guiding arrangement (4) and extend from the guiding arrangement (4) in a direction towards the lifting device (10) with a mutual angle (a1) between the steering wires (20a, 20b). A relative displacement between said frame arrangement (12) and one or both of the first and second steering wire guides (13a, 13b) is configured to be provided to control the mutual angle (a1) between the steering wires (20a, 20b).

The present disclosure is directed to a lifting device for a rotor blade of a wind turbine. The lifting device includes at least one cradle and a vacuum sealing system configured with the cradle. The cradle has a profile that corresponds to at least one of the exterior surfaces of the rotor blade so as to support at least a portion of the rotor blade. The vacuum sealing system is configured to secure the rotor blade to the cradle as the rotor blade is lifted and/or lowered from a hub mounted atop a tower of the wind turbine.

A rotor blade clamp is provided for assisting with mounting and/or dismounting of a rotor blade. The clamp has a first clamping part and a second clamping part opposed to the first clamping part. A spring-loaded hinge connects the first clamping part to the second clamping part, and has at least one spring that biases the clamping parts apart to an opened clamp configuration. The clamp has a reeving mechanism with a first reeving portion on the first clamping part and a second reeving portion on the second clamping part. The first and second reeving portions are adapted to receive a line therebetween, whereby pulling a free portion of the line reeved through the reeving portions draws the clamping parts together to a closed clamp configuration against the bias of the at least one spring.

A method of lifting a rotor of a wind turbine, the rotor having a center of gravity and including a hub and first, second, and third blades projecting outwardly from the hub at locations circumferentially distributed thereabout, includes positioning first and second slings around the first and second blades, respectively, to define first and second lifting zones delineating a lifting envelope, wherein the lifting envelope encompasses the center of gravity. The method also includes lifting the rotor above a surface via the first and second slings wherein the rotor is in one of a substantially horizontal or substantially vertical orientation, with the aid of at least one of the first and second slings while continuing to fully support the rotor by the first and second slings.

A wind turbine blade 2 is formed with structures allowing its lifting by a lifting apparatus 4, the blade comprising upper and lower blade shells and an internal load-bearing structure comprising an internal spar 16 or internal webs, a plurality of lifting points 20 arranged about the blade center of gravity, comprising openings for receiving lifting members 24 of a lifting apparatus insertable therein into structures 22 secured to the load-bearing structure, and with a locking connection being established between the lifting members 24 and the load-bearing structure 16.

A lifting mechanism (2) for lifting an object (46) is disclosed. The lifting mechanism (2) comprises drive means (4, 54) comprising means (10, 52, 50, 56) for being attached to a frame (20) of a lifting device, e.g. a yoke (42). The lifting mechanism (2) further comprises a lifting member (38) provided with means for being connected to a wire (32). The lifting mechanism (2) comprises means for moving the lifting member (38) in an arched movement path (40) relative to the frame (20) when the lifting mechanism (2) is attached to the frame (20), wherein the lifting mechanism (2) is configured to be suspended in only one lifting point (28).

A fluid delivery device is provided. The fluid delivery device includes a melter having a loading chamber and a hopper disposed in communication with the loading chamber, the loading chamber having one or more heating elements. The hopper includes a second heating element. The melter also includes a container handling system for lifting a container a predetermined height and moving the container from a position remote of the melter to a position within the loading chamber. The container includes contents stored within. The heating elements heat the contents so that the contents may be received in the hopper. The hopper may continue to heat the contents to provide a fluid. The fluid may be discharged from the hopper by way of a pump assembly. A pressure of fluid may be regulated at the pump assembly.

A crane (2) comprising a base portion (4), two arms (6, 8) displaceably connected to the base portion and a lifting boom (22) displaceably connected to the base portion, said lifting boom being provided with a lifting wire (32) and a lifting member (30), 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 element (10) is 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.

Heave balance device (1) can balance a lifted or supported load (8). The load can be lifted by a hoisting device (10) or it can be supported. The heave balance device comprises a first frame (2) and a connection unit (22) that can be suspended, e.g. to a hoisting device. Further a moveable carrying unit (32) allows for carrying (suspending or supporting) a load. The device comprises a transmission that couples the connection unit and carrying unit, wherein said transmission is arranged to guide the connection unit and the carrying unit to move along a guideline with respect to each other, the transmission having a spring force balancing arrangement (4) with one or more leverage units, such as one or more pivoting arms (50, 51), and with one or more configurable (gas- or) hydropneumatic springs. A method comprises suspending the load via a (heave) balance device. Further a kit of parts for hoisting devices is provided to allow load decoupling.

A lifting unit for a vehicle can include a mounting assembly configured to pivotally couple to a lifting boom of the vehicle, a coupler assembly configured to releasably couple with equipment positionable by the lifting unit, and a rotary actuator assembly coupled between the mounting assembly and the coupler assembly. The mounting assembly includes a mount, a travelling frame coupled to the mount, and an extension actuator configured to displace the travelling frame along an extension axis relative to the mount. The rotary actuator assembly is configured to rotate the coupler assembly about a rotational axis.