Intelligent and flexible steel arch protection device for rockfall and collapse of tunnels
US10513924B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 10, 2018 |
| Grant date | Dec 24, 2019 |
| Priority date | — |
| Expiry date | Jan 10, 2038 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21F17/18
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An intelligent and flexible steel arch protection device for rockfall and collapse of tunnels, including an arch main body system and a flexible protection system. The arch main body system includes an arched rigid high-strength steel frame and a base. The flexible protection system includes two parallel supporting rods which are oppositely arranged on the steel frame along the circular arc of the arch. Connecting rods are arranged between the two supporting rods at intervals, and the two ends of the connecting rods are fixed to the two supporting rods. The connecting rods are sleeved with guide rods and elastic devices are arranged between the guide rods and the supporting rods. A plurality of rolling shafts vertical to the axial direction of the two-way guide rods and connected with the two-way guide rods are arranged between the adjacent two-way guide rods, and the rolling shafts are sleeved with flexile rollers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.