A Composite Structure Phononic Crystal Vibration Isolation Support

Abstract

The invention relates to a composite structure photonic crystal vibration isolation support. The photonic crystal vibration isolation support is mainly composed of a vibration input shaft sleeve, a vibration isolation lining, a supporting lining, a surface type local resonance type vibration isolation assembly, an embedded type local resonance type vibration isolation assembly, an outer sleeve, alimiting structure and a vibration isolation device base; the vibration input shaft sleeve is connected with the vibration isolation lining, the vibration isolation lining is connected with a bearingshaft sleeve, the bearing shaft sleeve is connected with the outer sleeve through the surface type local resonance type vibration isolation assembly and the embedded type local resonance type vibration isolation assembly, the outer sleeve and the base are connected, and the limiting structure and the base are connected into a whole. The composite structure photonic crystal vibration isolation support solves the problem that a passive type vibration isolation support is narrow in vibration isolation frequency range, single in vibration isolation direction and not obvious in vibration isolationeffect; the mechanism can effectively isolate vertical vibration, lateral vibration and torsional vibration, the limiting effect on large-amplitude vibration can be achieved, and the structure can beused as a vibration isolation device of equipment such as various mechanical devices and precise instruments.

Description

technical field [0001] The invention belongs to the technical field of vibration isolation and noise reduction, and in particular relates to a composite structure phonon crystal vibration isolation support based on local resonance phonon crystal vibration isolation and rubber vibration isolation. Background technique [0002] Vibration is one of the most ubiquitous phenomena in nature. Vibration exists in everything from the universe to subatomic particles. All forms of physical phenomena, including sound, light, heat, etc., contain vibrations. However, vibrations are considered harmful in many situations. For example, vibration will affect the function of precision instruments and equipment, reduce the processing accuracy and finish, and aggravate the fatigue and wear of components, thereby shortening the service life of machines and structures. Vibration may also cause large deformation and damage to structures. Some bridges have suffered from vibration The flutter of a...

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Problems solved by technology

[0008] The purpose of the present invention is to address the deficiencies of the above-mentioned prior art, to provide a composite structure phononic crystal vibration isolation bearing, the vibration isolation bearing utilizes the characteristics of the periodic structure and the elastic wave band gap of the local resonant phononic crystal and the rubber material The characteristics of good low-frequency vibration isolation performance in engineering solve the problems of narrow vibration isolation frequency range, single vibration isolation direction and general vibration isolation effect of passive vibration isolation bearings

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