Driving-driven hybrid vibration isolator

Abstract

The invention discloses a driving-driven hybrid vibration isolator which comprises an air bag vibration isolator, wherein the air bag vibration isolator comprises an upper cover plate, a lower cover plate and an elastic bag body arranged between the upper cover plate and the lower cover plate. An electromagnetic actuator is arranged in the elastic bag body and comprises an armature, an iron core matched with the armature and a coil winding on the iron core, the armature is fixed on the upper cover plate, the iron core is fixed on the lower cover plate, an air gap is reserved between the armature and the iron core, a radiating sheet is arranged on the coil, and the bottom of the radiating sheet is connected with the lower cover plate. An air hole and a line hole respectively leading to the elastic bag body are arranged on the lower cover plate, an air sealing socket is arranged at the outlet position of the line hole, and a vibration sensor connected with a work state control end of the electromagnetic actuator is arranged on the lower cover plate. The driving-driven hybrid vibration isolator has the advantages of being high in reliability, small in energy consumption, low in cost, small in occupied space, good in adaptability and the like, can be adjusted adaptatively along with load changing of a vibration isolating device, and can achieve synchronous and effective control of broadband vibration and line spectrum vibration.

Description

technical field [0001] The invention relates to the technical field of mechanical equipment vibration isolation, in particular to an active and passive hybrid vibration isolator. Background technique [0002] Controlling the vibration caused by mechanical equipment to meet the standard requirements is the key to the design of industrial, civil, and especially marine mechanical systems. The vibration of mechanical equipment is composed of broadband and line spectrum superposition, and the energy concentration of line spectrum is very high. It is of great significance to realize the synchronous and effective control of broadband vibration and line spectrum vibration. [0003] The use of vibration isolation devices is one of the most effective ways to reduce the vibration transmission of equipment. There are two types of vibration isolation devices: passive vibration isolation and active and passive vibration isolation. Among them, the passive vibration isolation device is to...

AI Technical Summary

Problems solved by technology

[0005] The existing "Inertial Mass Vibration Isolation Device for Automotive Engines" (Patent No. 200920067893.6) and "Active Vibration Isolator" (Patent No.: 200610092560.X) use rubber The mass actuator is fixed on the vibration-isolated target with a single-point installation method to control the line spectrum vibration. Due to the low integration of the active and passive components, it has the disadvantages of large space occupation and poor adaptability

In "Inertial Mass Vibration Isolation Device for Automotive Engines" (Patent No. 200920067893.6), the inertial mass electromagnetic actuator uses a cylindrical permanent magnet to provide a permanent magnetic field. Inside the cylinder, the electromagnetic field and permanent magnetic field generated by the coil Interaction produces actuation force. This kind of actuator uses a large amount of permanent magnets, which is difficult to prepare, high material cost, poor closure of the magnetic circuit, and low energy efficiency ratio.

"Air Spring Ultra-low Frequency Vibration Isolation Method and Device Based on Differential Electromagnetic Actuator" (Patent No. 200610150810.0) adopts airbag vibration isolators and differential electromagnetic actuators in parallel to support a precision platform and isolate vibrations, with low integration. It occupies a large space, and the lateral displacement allowed by the differential electromagnetic actuator is small. When the device is excited by lateral impact and lateral vibration, the actuator is easily damaged

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