Hoist systems are provided. In one embodiment, a hoist system includes a lower platform, an upper platform, a plurality of flexible members, and a plurality of hoists. The upper platform has a plurality of rotatable support arms. The flexible members connect the rotatable support arms to the lower platform and can be extended and retracted using the plurality of hoists. If desired, the upper platform includes a plurality adjustable length support arms, and actuators may be used to extend and retract the support arms.
Tensile truss mast
2018-03-06
Patent
Electronic Resource
English
IPC: | B66C Krane , CRANES |