A marine thick-walled composite structure stern shaft

Abstract

The invention relates to a marine thick-walled composite structure stern shaft, comprising a metal shaft, one end of which is connected to the first metal shaft head through a first carbon fiber composite material shaft tube, and the other end is connected to a second metal shaft through a second carbon fiber composite material shaft tube head connection; the structure of the first carbon fiber composite shaft tube includes a first shaft tube main body, and first connection areas are respectively provided at both ends; the structure of the second carbon fiber composite material shaft tube includes a second shaft tube main body, and its two ends are respectively A second connection area is provided. The present invention adopts the structural vibration reduction design concept of "hard-soft-hard-soft-hard", uses a composite structure shaft structure formed by "high-performance composite material + metal", and applies high-performance carbon fiber composite materials. The advantages of damping, high specific strength, high specific modulus, strong material designability, and mismatch with metal modulus are conducive to structural vibration reduction, and improve its vibration reduction performance on the basis of meeting the axial mechanical performance requirements of composite structures.

Description

technical field [0001] The invention belongs to the technical field of ship vibration control, and in particular relates to a thick-walled composite structure stern shaft for ships, which can be applied to the design of a ship's transmission shaft that bears large thrust and torque at the same time, so as to reduce the longitudinal vibration noise of the shaft system and the structural weight, and at the same time It can be applied to weight reduction and vibration reduction of other similar transmission shaft structures. Background technique [0002] The shaft is the core part of power transmission on the hull. In addition to bearing the torque transmitted by the usual transmission shaft, it also bears the thrust generated by the propeller rotating in the water behind the ship. The hull shaft usually consists of the thrust shaft, the intermediate shaft and the stern shaft. The thrust shaft is supported by a thrust bearing and connected to the main propulsion motor through ...

AI Technical Summary

Problems solved by technology

[0006] In view of the shortcomings in the above-mentioned existing production technology, the applicant provides a marine thick-walled composite structure stern shaft, which solves the problem that the hull stern shaft made of traditional metal materials has poor vibration damping effect and heavy weight, and cannot meet the increasingly stringent propulsion shafting of ships. Technical issues of vibration and noise reduction and lightweight application requirements

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