A hoist or hoisting device is configure to place a pallet on a roof without the need of a person on the roof. The hoist includes a deflector that moves between a first position and a second position and releases a strap from an open hook as the deflector moves from the first position. A release arm on the deflector contacts a portion of the strap to push the strap off the open hook after the pallet has contacted the roof. The hoist may then be raised and the strap be unthreaded and pulled upward through the pallet to leave the pallet installed on the roof.

A method of handling a wind turbine component (54) for assembly or maintenance, comprises coupling one or more unmanned air vehicles (20) with the wind turbine component (54) so that at least a portion of the weight of the wind turbine component (54) can be supported and lifted by the one or more unmanned air vehicles (20). The method further comprises coupling one or more cranes (50) with the wind turbine component (54) so that at least a portion of the weight of the wind turbine component (54) can be supported and lifted by the one or more cranes (50). The method further comprises controlling the one or more unmanned air vehicle (20) and crane (50) in coordination to lift the wind turbine component (54) and manoeuvre said component (54) with respect to a wind turbine (52).

A takeout jig (1) includes: a support part (20) which is configured to be pulled up to take out a silicon rod (10) and which is configured to support the silicon rod (10) by clamping one or more end portions (15) of the silicon rod (10); one or more first cords (30) which are equal in number to or greater in number than the silicon rod (10) and which are configured to pull up the support part (20); and one or more second cords (40) which are configured to hold the silicon rod (10) by wrapping around the silicon rod (10).

A takeout jig (1) includes: a support part (20) which is configured to be pulled up to take out a silicon rod (10) and which is configured to support the silicon rod (10) by clamping one or more end portions (15) of the silicon rod (10); one or more first cords (30) which are equal in number to or greater in number than the silicon rod (10) and which are configured to pull up the support part (20); and one or more second cords (40) which are configured to hold the silicon rod (10) by wrapping around the silicon rod (10).

A lifting system (1) for lifting a pallet (5) with a heavy load (6) is disclosed, said lifting system comprising two or more carrier elements (4) and a suspension device in the form of a chain sling (2) or a strap sling with double as many fastening ends as the number of carrier elements, wherein each of the carrier elements comprises a stiff supporting beam (7) and a distance element and is arranged so that two of the fastening ends of the suspension device can be fastened to the supporting beam in opposite ends thereof, and wherein the distance element is dimensioned and mounted onto the supporting beam in such a way that it prevents displacement of the carrier element relative to a pallet in the longitudinal direction thereof, when the carrier element is mounted transversely through the pallet. Furthermore, a carrier element for such a lifting system is disclosed.

A lifting system (1) for lifting a pallet (5) with a heavy load (6) is disclosed, said lifting system comprising two or more carrier elements (4) and a suspension device in the form of a chain sling (2) or a strap sling with double as many fastening ends as the number of carrier elements, wherein each of the carrier elements comprises a stiff supporting beam (7) and a distance element and is arranged so that two of the fastening ends of the suspension device can be fastened to the supporting beam in opposite ends thereof, and wherein the distance element is dimensioned and mounted onto the supporting beam in such a way that it prevents displacement of the carrier element relative to a pallet in the longitudinal direction thereof, when the carrier element is mounted transversely through the pallet. Furthermore, a carrier element for such a lifting system is disclosed.

A sling bar assembly allows variable positioning of a sling on the sling bar assembly. Some sling bar assemblies include opposing sling bar members that are movable with respect to one another in a lateral direction. Some opposing sling bar members are repositionable between a locked position, in which movement of the sling members with respect to one another is restricted, and an unlocked position. Some sling bar assemblies include multiple sling hooks positioned on a sling bar member. Some sling bar assemblies include a biasing member that permits movement of a sling hook with respect to the sling bar assembly in the lateral direction.

A sling bar assembly allows variable positioning of a sling on the sling bar assembly. Some sling bar assemblies include opposing sling bar members that are movable with respect to one another in a lateral direction. Some opposing sling bar members are repositionable between a locked position, in which movement of the sling members with respect to one another is restricted, and an unlocked position. Some sling bar assemblies include multiple sling hooks positioned on a sling bar member. Some sling bar assemblies include a biasing member that permits movement of a sling hook with respect to the sling bar assembly in the lateral direction.

A hoist or hoisting device is configure to place a pallet on a roof without the need of a person on the roof. The hoist includes a deflector that moves between a first position and a second position and releases a strap from an open hook as the deflector moves from the first position. A release arm on the deflector contacts a portion of the strap to push the strap off the open hook after the pallet has contacted the roof. The hoist may then be raised and the strap be unthreaded and pulled upward through the pallet to leave the pallet installed on the roof.

A lifting apparatus and method. The lifting apparatus comprising a lower bar assembly, an upper frame assembly, and a plurality of straps. The lower bar assembly comprises a first bar and a second bar. The upper frame assembly comprises a first upper frame bar, a second upper frame bar substantially parallel to the first upper frame bar, and a cross piece connecting the first upper frame bar to the second upper frame bar and substantially perpendicular to the first upper frame bar and the second upper frame bar. The plurality of straps are fixedly attached to the lower bar assembly and slidably attached to the upper frame assembly.