Intelligent damper capable of being used for vibration isolation of resonance band

Abstract

The invention discloses an intelligent damper capable of being used for vibration isolation of a resonance band and belongs to the field of resonance vibration isolation devices. The intelligent damper comprises a U-shaped casing, an vibration isolation body freely movable relative to the U-shaped casing and an end cover mounted on the U-shaped casing, wherein the vibration isolation body comprises a device platform for installing a vibration-isolated object, a vibration isolation frame passing through a linear bearing mounted on the end cover, and a permanent magnet A mounted at the bottom ofthe vibration isolation frame. A permanent magnet B is mounted on the upper surface of the bottom of the U-shaped casing. The U-shaped casing contains a certain amount of magnetorheological fluid. Ametal coil spring is disposed between the permanent magnet A and the permanent magnet B, the lower end of the metal coil spring is fixedly mounted on the permanent magnet B, and the upper end of the metal coil spring is kept free. The intelligent damper has a simple and reasonable structure, has a small natural frequency, can achieve significant adjustment of a damping coefficient without consuming external energy, and is particularly suitable for performing vibration isolation in a resonance region.

Description

technical field [0001] The invention mainly relates to the field of resonance vibration isolation equipment, in particular to an intelligent vibration absorber which can be used for vibration isolation of resonance belts. Background technique [0002] Vibration isolation in the resonance region has always been one of the research hotspots in the field of vibration isolation. This is because when the system enters the low-frequency stage, and the external excitation also belongs to the low-frequency stage, the stiffness of the system is difficult to continue to decrease at this time, which will inevitably lead to failure. Avoid the resonance band; and because the damping coefficient of the shock absorber hardly changes in the resonator, the vibration isolation effect in the resonance area is not good. For this reason, it is necessary to design a shock absorber that can be applied to the low-frequency resonance region, and the damping force can be significantly changed to abso...

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Problems solved by technology

[0002] Vibration isolation in the resonance region has always been one of the research hotspots in the field of vibration isolation. This is because when the system enters the low-frequency stage, and the external excitation also belongs to the low-frequency stage, the stiffness of the system is difficult to continue to decrease at this time, which will inevitably lead to failure. Avoid the resonance band; and because the damping coefficient of the shock absorber hardly changes in the resonator, the vibration isolation effect in the resonance area is not good

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