Axial damping device and system for shaftless rim propeller

Abstract

The invention relates to an axial damping device and system for a shaftless rim thruster, the axial damping device and system are installed in a thruster body, the thruster body comprises a shell and the shaftless rim thruster, the shaftless rim thruster is arranged in the shell, the axial damping device comprises one or two electromagnetic actuators mounted at one end or two ends of the shaftless rim propeller; each of the one or two electromagnetic actuators comprises a magnetic core framework, a guide ring, a permanent magnet framework and two permanent magnet groups, the magnetic core framework is detachably connected with the shell, the guide ring is arranged between the magnetic core framework and the permanent magnet framework, the permanent magnet framework is detachably connected with the shaftless rim propeller, and the two permanent magnet groups are arranged in the shell. The two permanent magnet sets are arranged on the opposite sides of the magnetic core framework and the permanent magnet framework correspondingly, the opposite sides of the two permanent magnet sets are both in sliding connection with the guide ring, and mutual repulsive magnetic force is formed between the two permanent magnet sets. The problem that the vibration reduction effect is poor due to the fact that existing vibration reduction measures cannot adapt to excitation frequency changes of pulse thrust is solved.

Description

technical field [0001] The invention relates to the technical field of shock absorption and noise reduction, in particular to an axial shock absorption device and system for a shaftless wheel rim thruster. Background technique [0002] With the globalization of the economy, shipping accounts for an increasing proportion of transportation, which makes the status of ships more and more important. At present, ships are driven by traditional propeller shafting, but because the traditional propulsion shafting occupies 15% to 20% of the cabin, the space utilization rate of the cabin is low, the structure is increasingly complex, the design and construction costs are high, and the shafting is too long for the main engine. The energy efficiency transmitted to the propeller is low, and at the same time, it brings more hazards such as shafting vibration and noise, so enterprises have begun to adopt more advanced shaftless rim propellers. Although the shaftless rim thruster can greatl...

AI Technical Summary

Problems solved by technology

[0005] In view of this, it is necessary to provide an axial vibration damping device and system for a shaftless rim propeller to solve the problem that none of the existing vibration damping measures can adapt to the excitation frequency change of pulse thrust, so that the vibration damping effect is poor. question

Images