Ship propulsion shafting whirling vibration and twisting vibration simulation experiment device

Abstract

The invention discloses a ship propulsion shafting whirling vibration and twisting vibration simulation experiment device. The experiment device comprises a pedestal, a motor, an inter-axial transmission mechanism, a whirling vibration shaft and a twisting vibration shaft; the motor is fixed to the pedestal, the whirling vibration shaft and the twisting vibration shaft are in parallel arranged above the pedestal; the inter-axial transmission mechanism is used for driving said two shafts, and comprises a combination wheel and inter-axial gears, and belts, gears or chains are driven as needed; the whirling vibration shaft is provided with an alignment flange, a counterweight disc, an adjustable displacement bearing and measurement interfaces; the twisting vibration shaft is provided with a shock excitation motor, universal joints, an universal joint angle control apparatus and measurement interfaces, and the rotor of the shock excitation motor is connected to the shaft and used for simulating and generating twisting vibration. The experiment device is simple in structure and strong in pertinence, and can be applied to simulation study of shafting whirling vibration and twisting vibration and impact of shafting alignment status and transmission manner to whirling vibration and twisting vibration.

Description

technical field [0001] The invention relates to a shaft system vibration experiment device, in particular to a shaft system gyration vibration and torsional vibration simulation experiment device. Background technique [0002] Ship propulsion shafting is an important part of the ship's power system. The whirling vibration and torsional vibration of the shafting have a very critical impact on the safety and reliability of the ship's operation. [0003] When the ship's propulsion shafting is in operation, it will inevitably vibrate due to the joint influence of various factors such as propeller hydrodynamic force and hull deformation. Shafting vibration is mainly divided into three types: torsional vibration, longitudinal vibration and circular vibration. Among them, the torsional vibration is due to the torsional deformation of the ship shafting around its longitudinal axis under the periodic torque excitation of the engine and propeller. The vibration torque / stress caused ...

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Problems solved by technology

In addition, at present, the common research object of the whirling vibration of the shaft system is the high-speed light-load rotor shaft system with a relatively simple structure and absolute centering, focusing on the amplitude control and stability of the system during operation

Ship propulsion shafting is a special low-speed and heavy-load complex rotor system with variable working conditions. Conventional test devices cannot effectively simulate ship propulsion shafting that usually works in a misaligned state, and it is difficult to meet the requirements for shafting state changes. The need for the calculation of the response of the lower cyclotron vibration

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