Single-degree-of-freedom magnetic damping shock absorber based on eddy current effect

US11493107B2 · kind B2 · utility

Assignees

• SHANGHAI UNIVERSITY · CN
• CHONGQING UNIVERSITY · CN

Inventors

• Huayan Pu · Chongqing, CN
• Wenyuan He · Shanghai, CN
• Wenjiang Wu · Shanghai, CN
• Min Wang · Beijing, CN
• Jun Luo · Chongqing, CN
• Jiheng Ding · Shanghai, CN
• Yi Sun · Sha Tin, CN
• Long Bai · Zhejiang, CN
• Yan Peng · Shanghai, CN
• Shaorong Xie · Shanghai, CN

Key dates

• Filing date: Jun 30, 2021
• Grant date: Nov 8, 2022
• Expiry date: Jul 3, 2041

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16F2234/02
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

The present disclosure provides a single-degree-of-freedom (SDOF) magnetic damping shock absorber based on an eddy current effect, comprising a lower plate, a ring-shaped magnet a, a ring-shaped magnet b, an aluminum cylinder, a bottom copper sheet, a copper sheet, a top copper sheet, a bearing seat, a linear bearing, a bearing end cap, a load, a piston shaft, a stepped shaft, a fixed collar, a coil spring, a lower clamping shaft, and fixing screws. When the shock absorber is working, the ring-shaped magnet a keeps stationary at the lower end and the ring-shaped magnet b reciprocates in the vertical direction. Both magnets are arranged in a mutual attraction manner. Under the action of a time-varying electromagnetic field generated by the relative movement of the ring-shaped magnet b, the copper sheet arranged between the two ring-shaped magnets generates eddy current damping. The movement of the ring-shaped magnet b is inhibited.