Water-lubricated rubber alloy bearing device, friction self-excited vibration noise active suppression system and method

Abstract

The invention discloses a water-lubricated rubber alloy bearing device, a friction self-excited vibration noise active suppression system and a method. The water-lubricated rubber alloy bearing device includes a water-lubricated rubber alloy bearing and a bearing seat sleeved outside the water-lubricated rubber alloy bearing. It also includes a metal rubber sleeve. The metal rubber sleeve is arranged between the water-lubricated rubber alloy bearing and the bearing seat. One end of the metal rubber sleeve is provided with a driving mechanism for driving the deformation of the metal rubber sleeve to change the rigidity of the metal rubber sleeve. The invention adjusts the support stiffness by arranging a metal rubber sleeve between the water-lubricated rubber alloy bearing and the bearing seat, uses a driving mechanism to adjust the deformation and stiffness of the metal rubber sleeve, and monitors the state of the bearing in real time through a sensor, and collects bearing signals to form an active control strategy. Actively control the deformation of the metal rubber sleeve to adjust its support stiffness to the water-lubricated rubber alloy bearing, so as to achieve the function of actively suppressing the frictional self-excited vibration noise of the water-lubricated rubber alloy bearing from the source of the noise.

Description

technical field [0001] The invention relates to the technical field of water-lubricated rubber alloy bearings, in particular to a water-lubricated rubber alloy bearing device, a friction self-excited vibration noise active suppression system and a method. Background technique [0002] At present, water-lubricated rubber alloy bearings are widely used in the power propulsion system of underwater vehicles. With the continuous development of environmentally friendly and resource-saving green and intelligent industries, the demand for noise reduction and environmental protection technologies in high-end equipment transmission systems is increasingly urgent. The noise of the underwater propulsion system is mainly generated by the self-excited vibration phenomenon of friction on the surface of the water-lubricated bearing. During the rotation of the rotating shaft, the rotating shaft rubs against the rubber alloy surface of the water-lubricated rubber alloy bearing, and the multi...

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Problems solved by technology

[0003] 1. In the existing technology, the suppression of frictional self-excited vibration noise of water-lubricated rubber alloy bearings is mainly through acoustic countermeasure equipment. The noise suppression effect is easily affected by the changeable and harsh working environment, and it is a passive control strategy with limited effect;

[0004] 2. In the existing technology, the water-lubricated rubber alloy bearing is directly installed on the bearing seat, and the self-excited vibration noise of the water-lubricated rubber surface friction is directly transmitted to the outside of the underwater vehicle through the bearing seat, and the noise is very easy to leak under the passive control strategy;

[0005] 3. In the existing technology, the amplitude and frequency of the self-excited vibration noise of water-lubricated rubber surface friction are variable, and it is impossible to adjust the control strategy according to the noise characteristics in real time and quickly online

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