Series-stiffness, broadband and magnetorheological intelligent vibration absorbing device

Abstract

The invention discloses a series-stiffness, broadband and magnetorheological intelligent vibration absorbing device. The device comprises a bottom self-lubricating magnetic guide rail plate, a bottom magnetic yoke outer annular column, arc section circular ring sleeve keys, a bottom magnetic yoke anisotropic bar, disc-shaped springs, bottom inner column magnet exciting coils, bottom outer column magnet exciting coils, a bottom working clearance, a soft magnetic metal sealing plate, overlapped magnetorheological elastomers (MREs), overlapped magnetic conductive steel plates, an I-shaped iron connecting plate, bearing frame columns, an II-shaped iron connecting plate, a mass array, upper inner column magnet exciting coils, upper outer column magnet exciting coils and an upper working clearance; a negative stiffness system and a positive stiffness system form a basic power outputting unit of the series-stiffness, broadband and magnetorheological intelligent vibration absorbing device. With the adoption of the series-stiffness, broadband and magnetorheological intelligent vibration absorbing device, the shortages of narrow controllable broadband of a traditional passive vibration absorber, unadjustable performance, and complex active vibration absorbing assisting system. Compared with an existing intelligent vibration absorbing device, the series-stiffness, broadband and magnetorheological intelligent vibration absorbing device can reduce the low-frequency interference of flexible demands and high frequency vibration of rigid demand, applies a plurality of working conditions, and has a good economic advantage.

Description

technical field [0001] The invention mainly relates to the technical field of structural vibration isolation and vibration reduction, in particular to a serial stiffness broadband magnetorheological intelligent vibration reduction device. technical background [0002] Vibration isolation systems are widely used in high-precision measurement, automobile suspension, ship shafting and important disaster prevention and mitigation systems. The vibration isolation system can effectively reduce or weaken the adverse environmental interference in practical engineering applications. According to the transmission path, the environmental interference is mainly divided into two categories: one is the ground vibration transmitted from the support system, such as the impact of columns and purlins on engineering structures. Compared with structures, the vibration isolation system with small stiffness can increase the structural flexibility, which is the main vibration isolation strategy to...

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Problems solved by technology

[0006] Aiming at the problems existing in the existing technical solutions, a series stiffness broadband magnetorheological intelligent vibration damping device disclosed by the present invention overcomes the defects of narrow controllable frequency band, non-adjustable performance and complex active vibration damping auxiliary system of traditional passive vibration damping; Compared with the existing intelligent vibration damping device, the present invention is more suitable for reducing low-frequency interference required by flexibility and high-frequency vibration required by rigidity, adapts to many working conditions, and has better economic and technical advantages

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