Double-layer active and passive electromechanical integrated vibration isolation device

Abstract

The invention discloses a double-layer active-passive electromechanical integrated type vibration isolation device. The double-layer active-passive electromechanical integrated type vibration isolation device comprises a passive upper rubber vibration isolator (a), an intermediate framework structure (c), a mounting bottom plate (d), four electromagnetic exciters (b), integrated type control signal conditioning equipment and acceleration signal conditioning equipment (f), the intermediate framework structure (c) is arranged between the upper rubber vibration isolator (a) and the mounting bottom plate (d), the four electromagnetic exciters (b) serve as active executing mechanisms symmetrically arranged at the left and right sides of the intermediate framework structure (c), and the integrated type control signal conditioning equipment and acceleration signal conditioning equipment (f) are symmetrically arranged in front and rear grooves of the intermediate framework structure (c). The double-layer active-passive electromechanical integrated type vibration isolation device can well inhibit the vibration due to wide-frequency band external disturbance excitation, and the double-layer active-passive electromechanical integrated type vibration isolation device is mainly used for controlling the vibration of different kinds of marine diesel engines, steam turbines, pumps, the like rotating and reciprocating mechanical equipment, nuclear emergency power generator sets and the like large power equipment.

Description

technical field [0001] The invention relates to a vibration isolation device, in particular to an active and passive vibration isolation device. Background technique [0002] Existing vibration isolation technologies are mainly divided into three types: active, passive, and active-passive composite. Passive vibration isolation technology does not require external energy, the device is simple, reliable, and easy to implement, and has been widely used in engineering. However, passive vibration isolation is only possible when the excitation frequency of the external disturbance is greater than the natural frequency of the vibration isolation system. If the natural frequency of the vibration isolation device is too low, it will cause problems such as excessive static deformation and instability of the entire system. Therefore, passive vibration isolation technology cannot achieve ideal control effects on low-frequency vibrations and is not suitable for large frequency changes....

AI Technical Summary

Problems solved by technology

For example, the active-passive composite vibration isolator disclosed in the patent document with the publication number CN2924161Y and the hybrid vibration isolator disclosed in the patent document with the publication number CN102011822A are all designed in parallel with the active and passive vibration isolation parts, and the active control The force is provided by the electromagnetic force that is easy to control. This design has a vibration isolation effect for vibrations with large frequency changes, but it is essentially a single-layer vibration isolation, so it requires a large active control force; and the patent document with the publication number CN1431757A In the resonant exciter disclosed in , the active actuator and the passive vibration isolation device are used in series, such an arrangement will increase the overall height, which limits its use in some limited space occasions; and the patent document with the publication number CN102748425A The disclosed active-passive hybrid vibration isolator is designed in parallel with an electromagnetic exciter and an airbag. As a passive vibration isolation part, the airbag has a good broadband vibration isolation effect, but it is also a single-layer vibration isolation device, and has airtightness and gas The force lag is obvious, the control accuracy is not high, etc.

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