Two-way active electromagnetic control system for vibration of marine propulsion shafting

Abstract

The invention discloses a two-way active electromagnetic control system for vibration of marine propulsion shafting. The control system is installed on the marine propulsion shafting. The marine propulsion shafting comprises an elastic coupling, a marine power device, a bearing base, a radial bearing, propellers and a thrust bearing; the above components are axially distributed along the thrust shafting, the thrust bearing is located on the bearing base for transmitting power in the marine power device to the propellers; the control system comprises a two-way active electromagnetic control assembly, the two-way active electromagnetic control assembly is mounted on the base of the thrust bearing for applying axial force in both directions according to the axial vibration, thereby reducing axial vibration caused during operation of the shafting. According to the control system in the invention, a force is applied by a two-way active electromagnetic controller mounted on the base of the thrust bearing, the unique performance of the two-way active electromagnetic controller can meet unique requirements of the propellers and is effective in controlling the shafting excitation without wear during operation, and the maintenance cost is low.

Description

technical field [0001] The invention belongs to the technical field of ships and ocean engineering, and in particular relates to a bidirectional active electromagnetic control system for the vibration of ship propulsion shafting. Background technique [0002] For ships in the form of direct transmission, the main propulsion shafting is an essential part of its power plant, including the drive shaft from the thrust bearing at the output end of the main engine to the propeller and the accessories on the shaft. As a conversion device for torque and thrust, the main propulsion shafting is to transmit the power from the main engine of the ship to the propeller to make the propeller rotate, and at the same time transmit the thrust generated when the propeller rotates to the hull to propel the ship to sail. [0003] The propulsion shafting of a ship is a continuous elastic body. The uneven thrust generated by the rotation of the propeller in the uneven wake field and the uneven axi...

AI Technical Summary

Problems solved by technology

[0007] At present, the active control of the vibration of the propulsion shafting of ships mainly has the following problems: it cannot meet the unique requirements of the propeller, and it cannot effectively control the excitation of the shafting, there is a lot of wear and tear, and the maintenance cost is high

Images