The invention belongs to the technical field of floating
crane equipment in the maritime work industry, and particularly relates to an offshore
pile lifting swing restraining device with an automatic adjusting function and a swing restraining method, and the device comprises a
pile extractor connecting
flange plate which is installed on a
pile extractor and is a circular plate; the four steel cable lifting and lowering units are arranged on the lower portion of the pile extractor connecting
flange plate at equal intervals in the circumferential direction with the center of the pile extractor connecting
flange plate as the circle center, the length of the steel cable lifting and lowering units can be adjusted, and the four steel cable lifting and lowering units jointly hoist the swing restraining ball; the
oil supply unit is located in the center of the lower portion of the pile extractor connecting flange plate and used for injecting oil into the swing restraining ball. The
motion recognition detection unit comprises an original point detection unit and a
motion recognition monitoring point P, the original point detection unit is located in the center of the lower portion of the pile puller connecting flange plate, and the
motion recognition monitoring point P is located at the top of the swing suppression ball. The method is suitable for solving the technical problem that in the offshore pile hoisting operation process affected by
wind power, the construction progress is slow due to swinging during pile hoisting positioning and
butt joint of a pile feeder and a foundation pile.