The invention relates to a ship floating state and stability monitoring device and method for a container
quay crane. According to information, such as quay
tide level and wave conditions,
mooring constraints, loading and unloading operation, a ship-type structure, a hanger position, sling tightness, and a hanger inclination angle, obtained through a quay operation
management system and a
quay crane monitoring computer, a natural period and a steady-state inclination angle are predicted through a ship rolling non-
mooring constraint extreme point measurement method, a ship static inclination angle and
initial stability safety are calculated and verified, and floating state and stability alarming in the ship loading and unloading processes is conducted; the problems of a small container shipwhich is not equipped with a
loader, cannot provide carrying information, and is difficult to accurately verify the
initial stability are solved, thus the
crew testing work intensity is reduced, andthe ship loading stability safety is ensured; the
disadvantage that a rolling period test method needs to remove ship
mooring and measures the complete period is overcame, free rolling generated by loading and unloading operation in a quay is effectively used, the measurement time of a hanger loaded on the ship is greatly shortened, and the efficiency requirements of
quay crane loading and unloading operation are basically met; and immediate data reference is provided for timely
stowage or
ballast adjustment of the quay and the ship, and the ship floating state and stability monitoring deviceand method for the container quay crane can be widely applied to various container quay cranes of manual or automated quays.