An upper spreader guide device includes a pair of left and right boom-side guide parts each supported by a boom so as to be arranged in a raised attitude of rising diagonally upward from the boom in a state where the boom is arranged in a lowered attitude, and a pair of left and right movable guide parts supported by the pair of boom-side guide parts, respectively, such that a relative position with respect to the pair of boom-side guide parts is changeable between a protruding position and a retraction position.
UPPER SPREADER GUIDE DEVICE
2024-03-14
Patent
Electronic Resource
English
IPC: | B66C Krane , CRANES |