Design and analysis of elevator vertical low frequency vibration isolator

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Journal of Vibration and Shock ›› 2022, Vol. 41 ›› Issue (19) : 296-302.

SONG Danlong1, SHI Pu1, DU Chunhua1, LIU Kai1, XIAO Yongheng2

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Abstract

In order to solve low frequency vibration of traction elevator, a novel low frequency vibration isolator which consists of buckling steel plate and cylindrical rubber was analyzed and developed by theoretical modeling and finite element analysis based on the principle of quasi-zero stiffness. A series of static and dynamic experiments were conducted for buckling steel plate, cylindrical rubber and low frequency vibration isolator at the same time. The results show that the average stiffness of the new low-frequency vibration isolator at the equilibrium position was below 20 N/mm. The natural frequency of the elevator car was reduced to 1 Hz, and the initial frequency of vibration isolation was reduced by 81.80%. The size and buckling of the spring plate and the size and hardness of the cylindrical rubber were the key parameters which affected the performance of the low-frequency vibration isolator. The novel low frequency vibration isolator not only ensures the static stability, but also realizes low frequency vibration isolation for the elevator car, and improves the riding comfort of the elevator.
Key words: Elevator; low frequency vibration; quasi-zero stiffness; vibration isolation; transmissibility

Key words

Elevator / low frequency vibration / quasi-zero stiffness / vibration isolation / transmissibility

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SONG Danlong1, SHI Pu1, DU Chunhua1, LIU Kai1, XIAO Yongheng2. Design and analysis of elevator vertical low frequency vibration isolator[J]. Journal of Vibration and Shock, 2022, 41(19): 296-302

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