An adaptive ice breaking device for ships

Abstract

The invention belongs to the field of ice-breaking ships, in particular to an adaptive ice-breaking device for ships. The device comprises a base, a reserve box, a crankshaft, an electric motor, a controller, a conveyor belt, a speed reducer, an electromagnetic clutch, a connecting rod, a slider vibration exciting rod, small and large electromagnets, a return spring, a stop pin, an electric motorcontroller and the like; One end of the crankshaft is connected with the output shaft of the speed reducer through an electromagnetic clutch to transmit torque, and the other end is connected with theconnecting rod through a rotating pair; The slider vibration exciting rod and the connecting rod are connected through a ball hinge, and the slider vibration exciting rod and the slider rail are connected through a ball to realize the guidance and reduce the friction; The slide rail has four arc-shaped grooves, the ball is located in the arc-shaped groove, and the slide rail is fixed on the base.The controller selects the rotational speed of the motor according to the natural frequency fn of the sea ice, so that the frequency f1 of the exciting force exerted by the vibration hammer on the ice is equal to the natural frequency fn of the ice, so as to realize the resonant ice breaking. The invention is based on the resonance principle, and has the advantages of low cost-effectiveness ratio, strong adaptability and high ice breaking efficiency.

Description

technical field [0001] The invention belongs to the field of icebreakers, and in particular relates to an adaptive marine icebreaker. Background technique [0002] Today, when the global population is growing rapidly and resources are scarce, the economic value and strategic value of Arctic oil and gas resources are particularly prominent. Ship equipment in the polar region, such as heavy icebreakers and high-grade icebreaking ships, has become a hot spot for maritime powers and major powers. When traditional icebreakers and other ships sail in polar regions, they are mainly based on the structural design of the ice zone, relying on the gravity of the ship itself to achieve the icebreaking function of the ship, and its icebreaking ability is mainly determined by parameters such as the ship’s displacement; The stronger it is, the power of the ship's main engine will also increase accordingly, resulting in a high cost-effectiveness ratio for ship icebreaking. At the same tim...

Images