Marine Thrust Bearing Resonant Converter

Abstract

The invention discloses a thrust bearing resonant converter for marine. The converter comprises a thrust bearing and a resonant converter which is connected with the thrust bearing; a front end cover of the thrust bearing is internally provided with a plurality of plunger chambers uniformly along the circumference; each plunger chamber is internally provided with a plunger; one end of the plungeris contacted with a front thrust block of the thrust bearing, and the other end of the plunger forms a clearance with the corresponding plunger chamber; the clearances of all plunger chambers are communicated mutually and are filled with hydraulic oil, and a balance oil cylinder is formed; the resonant converter consists of a hydraulic pipe and an oil cylinder which are connected mutually; the balance oil cylinder is connected with the hydraulic pipe through an interface, and is communicated with the oil cylinder of the resonant converter; and the vertical load of a propulsion shafting is transferred to each plunger which is contacted with the propulsion shafting through the front thrust block, each plunger is pushed to move and the load is acted in the balance oil cylinder and the hydraulic oil in the resonant converter, thus vibration attenuation is realized. According to the invention, the assembling problem between the resonant converter and the thrust bearing for marine is solved, and the resonant converter has the advantages of flexibility in mounting, high safety and small volume, and is convenient to control in the practical operation.

Description

technical field [0001] The invention belongs to a passive damping device for longitudinal vibration of a ship's propulsion shafting, in particular to a marine thrust bearing resonance converter, which is used to reduce the longitudinal vibration of a ship's propulsion shafting to reduce the impact on the ship's shafting and hull structure. Background technique [0002] Ship propulsion shafting is mainly composed of propeller, stern shaft, intermediate shaft, sliding bearing, thrust shaft, thrust bearing, elastic coupling, speed change device, diesel engine and shafting auxiliary devices. The uneven wake field at the stern of the ship is the direct cause of the longitudinal alternating pulsating excitation force at the blade. The propeller alternating longitudinal force usually acts on the hull in two forms, causing hull vibration and underwater radiated noise, one is directly transmitted to the surface of the hull through the stern fluid; the other is through the shafting of...

AI Technical Summary

Problems solved by technology

In this structure, the structural improvement of the thrust bearing is simply completed by using the principle of the resonant converter, and there is no discussion on the structural form, control mode, and overall assembly form of the resonant converter; and once the structural design is determined, the control shaft The longitudinal rigidity and damping of the system are relatively difficult, and the design is inappropriate for issues such as convenient disassembly and flexible adjustment.

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