Active vibration isolator capable of being used for exponentially improving rigidity of intelligent robot

Abstract

The invention discloses an active vibration isolator capable of being used for exponentially improving rigidity of an intelligent robot and belongs to the field of intelligent robot vibration isolation. The active vibration isolator comprises a circular shell, an upper end cover, a lower end cover, a lifting rod, an equipment platform, a spring mounting plate, a motor frame, a fundamental-frequency spring and n frequency-doubled springs and additionally further comprises n sets of lifting adjusting modules. The upper end cover and the lower end cover are mounted at the upper end and the lowerend of the circular shell correspondingly, the lifting rod penetrates through the upper end cover and can move in a free rising-and-falling mode, the equipment platform and the spring mounting plate are mounted at the upper end and the lower end of the lifting rod correspondingly, the motor frame is fixedly mounted in the circular shell, the frequency-doubled springs are equal in rigidity and mounted in a axial symmetry mode, and n is an integer larger than 2. According to the active vibration isolator, motor driving is adopted for rigidity adjusting, and according to the outside excitation frequency, the inherent rigidity of an implementation system can be changed to be exponentially improved.

Description

technical field [0001] The invention mainly relates to the field of vibration isolation of intelligent robots, in particular to an active vibration isolator that can be used as a multiplier for the stiffness of intelligent robots. Background technique [0002] Intelligent robots have extremely high requirements for vibration isolation. Due to the different frequencies of external excitations, robots with fixed stiffness often cannot meet the optimal vibration isolation. In the prior art, the stiffness of most vibration isolators is constant, although the stiffness of some vibration isolators is variable, but the change of stiffness is passively changed with the displacement, not actively changed according to the external excitation frequency. Therefore, it is of great significance to design an active vibration isolator that can actively adjust the stiffness according to the change of external excitation frequency. Contents of the invention [0003] The technical problem t...

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Problems solved by technology

[0003] The technical problem to be solved in the present invention is: Aiming at the technical problem of "the stiffness of the intelligent robot vibration isolator cannot be actively adjusted" existing in the prior art, the present invention provides a motor-driven stiffness adjustment that can change the inherent stiffness of the implementation system according to the external excitation frequency Active vibration isolators that can be multiplied and applied to the field of intelligent robots

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