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US 11,702,325 B2Granted
Method for controlling crane, and crane
AssigneeTadano Ltd.
InventorsShinsuke Kanda, Shoji Nishimoto, Kazuma Mizuki
Life of this patent
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AssigneeTadano Ltd.
InventorsShinsuke Kanda, Shoji Nishimoto, Kazuma Mizuki
Estimating the term…
There is provided a method for controlling a crane, with which the position of a hook is automatically adjusted before lift-off, where a freely-derricking telescopic boom is provided to a swivel base, a main hook is suspended with a main wire rope from a distal end section of the telescopic boom, and a suspended load is suspended on a main hook with slinging wire ropes, wherein post-slinging lift-off is preceded by a hook position adjustment control involving repeating: a first process where the control device controls so as to reel in the main wire rope to a position where the main wire rope is tensed; and a second process where the control device controls so as to move the distal end section of the telescopic boom in the same direction of a horizontal direction component of the movement of the main hook in the first process.
A method of controlling a working machine that raises or lowers a load using a plurality of sling wires suspended by a hook at an end of a wire rope suspended on a telescopic boom or jib, detects a tension of the wire rope using a detection section, and determines plane coordinates of the hook from an image capturing in a vertically-downward direction at predetermined intervals by a camera provided on the leading end of the telescopic boom or the leading end of the jib, the method comprising:
A working machine that raises or lowers a load using a plurality of sling wires suspended by a hook at an end of a wire rope suspended on a telescopic boom or jib, the working machine comprising:
Dependencies are inferred from the claim text.