Inertia stabilization system used for lifting hook of offshore crane

Abstract

The invention discloses an inertia stabilization system used for a lifting hook of an offshore crane, and relates to the field of crane lifting hook stabilization. The operation of the offshore crane has strict requirements on rolling and pitching angles of a ship, but a lifting hook can generate larger swing along with the movement of the ship, so that the safety of operators and construction facilities is seriously influenced, and the offshore operation efficiency and the project progress are influenced. The inertia stabilization system comprises a damping device, a spring, a slidable inertia transmission device, a transmission connection rack and a sliding balance weight. During use, the inertia stabilization system is mounted on two sides of a side sliding wheel box on a main hook of the crane lifting hook, and when the lifting hook moves, damping and buffering effects of the damping device, the spring and the inertia transmission device are mutually superposed, so that energy storage, release and ablation are realized, vibration and swing of the hook can be effectively reduced, the swing amplitude of the lifting hook in the offshore lifting operation process is reduced, and the seakeeping performance and safety of the offshore crane ship in the lifting operation process are enhanced.

Description

technical field [0001] The invention relates to the field of crane hook anti-rolling, in particular to an inertial anti-rolling system for offshore crane hooks. Background technique [0002] Large-scale engineering ships mainly include large-scale crane ships, large-scale crane-laying pipe-laying ships, and various types of offshore operation support ships. These engineering ships need to use large-scale crane equipment to carry out offshore engineering project construction, and undertake large-scale structures or equipment at sea. hoisting work. Since the ship is in place at sea through anchoring or dynamic positioning system, under the action of wind, waves and current, the motion state of the ship is the prerequisite for determining whether it can be hoisted at sea. At the same time, the operation of offshore cranes has strict requirements on the ship's roll and pitch angles. However, under the condition that the crane is allowed to operate, the crane is in the state of ...

AI Technical Summary

Problems solved by technology

At the same time, the operation of offshore cranes has strict requirements on the ship's roll and pitch angles. However, under the condition that the crane is allowed to operate, the crane is in the state of empty hooks such as lifting rod, hook, shackle and putting rod. , the hook will sway more with the movement of the ship, which seriously affects the safety of operators and construction facilities, and often leads to the shutdown of offshore operations, which not only affects the efficiency and progress of offshore operations, but also increases the cost of offshore operations

The plan to control the swing of the hook head mainly includes increasing ballast, modifying the ship type, adding hull anti-rolling equipment, and performing anti-rolling control on the hook head, etc. The plan of modifying the ship type and adding hull anti-rolling equipment can effectively improve and enhance the seakeeping of the crane ship. Performance, but would require a major overhaul at very high cost

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