Torsional vibration isolator for ship propulsion shafting

Abstract

The invention discloses a torsional vibration isolator for a ship propulsion shafting. The torsional vibration isolator comprises a shell, a supporting circular plate and triangular supporting blocks, semicircular elastic pieces are arranged at the upper end and the lower end of the shell, buffer structures are arranged at the upper end and the lower end of the supporting circular plate, a pushing and supporting plate is fixedly installed at one end of each triangular supporting block, a first clamping arc block is arranged at one end of one pushing and supporting plate, buffer columns are arranged at the upper end and the lower end of each triangular supporting block, and a second clamping arc block is arranged on the right side of the first clamping arc block. The torsional vibration isolator has the beneficial effects that torsional vibration transmitted from a driving shaft to a driven shaft can be reduced, meanwhile, longitudinal impact, caused by fluid impact loads, of the driven shaft to the driving shaft is buffered, normal running of the propulsion shafting is guaranteed, fatigue damage is prevented from happening to the propulsion shafting, the service life of the propulsion shafting is prolonged, and the safety performance of a ship is improved.

Description

technical field [0001] The invention belongs to the technical field of vibration isolators, in particular to a torsional vibration isolator for ship propulsion shafting. Background technique [0002] The propulsion shafting is an important link in the power plant of the ship system. Its main function 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 through the thrust bearing to propel the ship. sailing. When the ship's propulsion shafting system is in operation, it is affected by various dynamic factors such as propeller hydrodynamic force, hull deformation, and lubricating oil film. Vibration will inevitably occur due to the impact load such as the recoil force at the time. [0003] The main problems of ship propulsion shafting during operation are as follows: [0004] 1. If the speed frequency of the propulsion shafting is con...

AI Technical Summary

Problems solved by technology

When the vibration is transmitted to the hull, it will cause environmental vibration, add additional stress to the hull structure, affect the strength of the hull structure, or affect the working accuracy of the surrounding electronic and electrical equipment

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