Bidirectional collapse-proof damper with macroscopic NPR structure and bridge structure having same

US11739810B2 · kind B2 · utility

Assignees

• Institute Of Urban Safety and Environmental Science, Beijing Academy of Science and Technology · CN
• Wenzhou University · CN

Inventors

• Bideng Liu · Beijing, CN
• Yongli Yang · Nanhu, CN
• Yubin Wu · 象珠镇, CN
• Ruixiang Song · Beijing, CN
• Qiong Wu · Vancouver, CA

Key dates

• Filing date: Oct 26, 2022
• Grant date: Aug 29, 2023
• Expiry date: Oct 26, 2042

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16F2228/063
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

The present invention discloses a bidirectional collapse-proof damper with a macroscopic NPR structure and a bridge structure having the same, comprising a sleeve and a sliding rod; by adding a structure of a reducing part and a limiting body, a sliding gap exists between both ends of the limiting body and both inner ends of the reducing part; the rod body is connected with the inner side wall of the sleeve through an elastic element; the limiting body and the rod body can realize bidirectional slip in the sleeve, which have multi-level seismic performance.