Self-energy-supply double-rod electrorheologic damper capable of achieving symmetric self-energy supply free of compensated air chamber

Abstract

The invention discloses a self-energy-supply double-rod electrorheologic damper capable of achieving symmetric self-energy supply free of a compensated air chamber. The damper is mainly composed of adamper part and two sets of energy supply parts which are symmetrically arranged. When a piston rod is vibrated by the outside, a compressed spring plate follows the piston rod to move, two sets of piezoelectric ceramics are squeezed respectively in the two strokes of compression and restoration to produce induced voltage which is connected to an inner electrode and outer electrode through a wireto produce an electric field, the viscosity of electrorheological fluids between the inner electrode and the outer electrode is increased, differential pressure is formed between damping cavities, andtherefore, vibration of a piston is reduced. The larger the vibration amplitude of the piston, the higher the voltage generated by the piezoelectric ceramics, and the greater the resistance producedby the electrorheological fluids. In this way, the purpose that the system conducts self-coupling vibration attenuation is achieved. The damper adopts the symmetric structure and the symmetric workingmode of double rods, loads can be borne from the two sides, and vibration attenuation is achieved; the air chamber compensation part is omitted, the reliability and working stability of the damper are improved, unnecessary devices are reduced, and rigid mechanical sealing and inflation processes are omitted.

Description

technical field [0001] The invention relates to a novel electrorheological fluid damper, which is symmetrical in structure and working mode, does not need an external power supply during operation, and is an intelligent damper capable of self-coupling and vibration reduction with the external vibration amplitude. Background technique [0002] Electrorheological fluids (ERF fluids) are smart materials, which are generally formed by uniformly dispersing micron (or nanometer)-scale particles with high dielectric constant in an insulating oil phase medium with low dielectric constant suspension. When an external electric field is applied, the ERF fluid changes from a flow state to a solid-like state, its apparent viscosity increases by several orders of magnitude, and reaches a higher shear stress. The process is reversible, controllable, rapid and low energy consumption. These excellent electromechanical coupling properties enable ERF fluids to effectively solve energy transf...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a symmetrical self-powered electrorheological fluid damper with double rods and no compensating air chamber, which is easy to settle and has a complicated volume compensation structure for the existing electrorheological fluid damper with unilateral loading...

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