Multi-stage control negative Poisson self-expanding anchor apparatus

US12173606B2 · kind B2 · utility

Assignee

• North China University of Water Resources and Electric Power · CN

Inventors

• Xingsheng Zhang · Baofeng County, CN
• Jinyu Dong · Baofeng County, CN
• Weihua Li · Dongguan, CN
• Mengke Hu · Baofeng County, CN
• Xinglong Yang · Baofeng County, CN
• Xing Chen · Sunnyvale, US
• Yawen ZHAO · Beijing, CN

Key dates

• Filing date: Sep 23, 2022
• Grant date: Dec 24, 2024
• Expiry date: Apr 3, 2043

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E02D17/20
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

The present disclosure is related to a multi-stage control negative Poisson self-expanding anchor apparatus. The apparatus is constructed to solve the problem of poor effect or even failure of anchor bolts owing to insufficient force area of the bolt and easy damage of the locking section under the action of large tension in the existing technology. The anchorage section mainly comprises a plurality of circular platform bodies spaced with larger outward and smaller inward along the axial direction. The axial inner segment of the round platform body is coaxial connected with the force resistant body, and the axial outer segment of the round platform body is opened with an axial inward through the hole of the force resistant body. The axial inner part of the force resistant body is fixed on the anchorage segment.