Electromagnetic vibration reduction thrust bearing for shafting longitudinal vibration control

Abstract

The invention provides an electromagnetic vibration reduction thrust bearing for shafting longitudinal vibration control. The electromagnetic vibration reduction thrust bearing comprises a shaft body, a longitudinal electromagnetic support, an electromagnetic chuck, a thrust bearing, a thrust disc and a base; the shaft body is rotatably arranged in the base in a penetrating manner, the longitudinal electromagnetic support is fixedly connected to the base, the electromagnetic chuck is fixedly connected to the shaft body, and the electromagnetic chuck is attracted by the longitudinal electromagnetic support; the thrust bearing is fixedly connected to the base, the thrust disc is fixedly connected to the shaft body, and the thrust disc is rotatably arranged in the thrust bearing; and the shaft body, the longitudinal electromagnetic support, the electromagnetic chuck, the thrust bearing and the thrust disc are installed in a centering manner. According to the electromagnetic vibration reduction thrust bearing, the longitudinal position of a shaft system is adjusted through static electromagnetic force, and vibration generated by contact of the thrust disc and a thrust pad is avoided; and longitudinal vibration transmission of the shaft system is controlled through dynamic electromagnetic force, so that transmission of longitudinal excitation of a propeller to a ship body through the thrust bearing can be effectively restrained.

Description

technical field [0001] The invention relates to vibration reduction and noise reduction, in particular to an electromagnetic vibration reduction thrust bearing used for shafting longitudinal vibration control. Background technique [0002] With the economic globalization, the development of international trade and the exploration and development of marine resources, ships occupy an increasingly important position, and my country has become the world's largest shipbuilding country. When the ship is sailing on the water surface, the main exciting forces are: the excitation caused by the propeller, the ship's main engine and power machinery, waves, etc. Under the action of these exciting forces, the ship will vibrate in different degrees. At present, the vibration reduction performance of ship equipment, as an important index to measure the comprehensive performance of modern ships, has attracted more and more attention. Excessive hull vibration can lead to fatigue damage to ...

AI Technical Summary

Problems solved by technology

[0005]At present, the research on longitudinal vibration transmission control of shafting mainly focuses on vibration absorption and vibration isolation methods, such as resonance converter, longitudinal shock absorber, vibration damping thrust bearing, dynamic Anti-resonance isolators, shafting electromagnetic inertial shock absorbers, etc., but these methods cannot take into account broadband vibration reduction and low-frequency line spectrum control, and do not take into account the influence of high-speed and heavy-load operating conditions

Existing vibration reduction measures have poor vibration reduction effect and low flexibility

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