A ship shafting test device under wave force

Abstract

Provided is a ship shafting testing device under the action of wave force. The left end of a tail shaft is connected with a rotating mechanism, the tail shaft is located through a rigid tail bearing and an elastic tail bearing, an auxiliary shaft is mounted above the tail shaft through a support, the auxiliary shaft is connected with a water tank through a connecting part, the water tank does vertical motion through cooperation of a guide block and a guide strip, deformation, generated after stress, of the water tank is transferred through displacement of the connecting part, and a water pump and a wave generation mechanism are mounted in the water tank. The wave force generated by various waves generated in the water tank is transferred to the auxiliary shaft through a gas spring on the connecting part, so that the auxiliary shaft and the tail shaft generate corresponding elastic vibration deformation; the power characteristics of the tail shaft are detected through a detecting mechanism on the auxiliary shaft and the tail shaft. According to the device, the waves of multiple types are generated through position changes of the wave generation mechanism, actual sea conditions are effectively simulated, and various detected parameters of the tail shaft are closer to the reality. Scientific parameters are provided for later research on shipbuilding and ships.

Description

technical field [0001] The invention relates to a test device for a ship, in particular to a test device for a ship's shafting under the action of a wave force. Background technique [0002] The working state of the ship shafting is affected by the state of the hull and changes within a certain range. The coupling and mutual influence among the ship shafting, stern bearing oil film and the hull are very prominent. Due to the huge torque and thrust transmitted by the propulsion shafting, the vibration of the ship's shafting is aggravated. This vibration often manifests as mutual excitation coupling vibration between the tail shaft and the oil film. The vibration causes the lubricating oil film to whirl, and in severe cases, the lubricating oil film breaks Therefore, the study of the coupled vibration mechanism of the ship stern shaft and the oil film of the stern bearing is a key link in the comprehensive study of the generation mechanism and control technology of the ship st...

AI Technical Summary

Problems solved by technology

In order to obtain the mechanism and characteristics of these wave-induced vibrations, segmental model tests are generally carried out through ship models in ship design, but segmental model tests are difficult to realize, and it is difficult to reflect the impact of the vibration characteristics of the hull and shafting on the loads of the surrounding flow field. influences

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