Photonic crystal vibration damping coupling

Abstract

The invention provides a photonic crystal vibration damping coupling which comprises a first half coupling, a second half coupling, a Bragg type photonic crystal member and a local area resonance type photonic crystal member, wherein the Bragg type photonic crystal member is a cylinder composed of a first oscillator and a second oscillator; the material densities of the first oscillator and the second oscillator are different; the local area resonance type photonic crystal member comprises a base body rod, a nonmetal ring and a metal ring; the nonmetal ring wraps the base body rod; the metal ring wraps the nonmetal ring; circular holes and bolt holes are formed in flange plates of the first half coupling and the second half coupling; the local area resonance type photonic crystal member is mounted in the circular holes; the Bragg type photonic crystal member is mounted in shaft holes of the first half coupling and the second half coupling; and two ends of the Bragg type photonic crystal member are connected with a first rotating shaft and a second rotating shaft. The photonic crystal vibration damping coupling utilizes the characteristic that a photonic crystal can restrain vibration transmission and can effectively reduce torsional vibration and radial vibration of the coupling in low and medium frequency domains.

Description

technical field [0001] The invention belongs to the technical field of electromechanical transmission devices, and relates to a phonon crystal vibration damping shaft coupling. Background technique [0002] In the high-speed and heavy-duty power transmission, the coupling has the functions of buffering, damping and improving the dynamic performance of the shaft system. With the increase of operating speed and torque of mechanical equipment, the vibration problem of coupling has become a problem that must be paid attention to in technical specifications. The bandgap and defect state characteristics of phononic crystals make it have potential broad application prospects in vibration reduction and noise reduction. [0003] The Chinese utility model patent "ZL201420637559.0" discloses a damping coupling with a buffer disc. In the coupling, claw discs are respectively installed on the ends of the driving shaft and the connecting end of the driven shaft. There is a buffer disc m...

AI Technical Summary

Problems solved by technology

The use of the buffer disc has the function of damping the vibration and noise of the coupling, but the structural modification of the original coupling is large, and it can only work on the torsional vibration, and is not suitable for the working condition of the speed fluctuation

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