Automatic measuring device for the thickness of the reinforcement cage mold protection layer of a shield segment
By combining a lifting mechanism and a contact measurement component, the thickness of the protective layer of the steel reinforcement in the tunnel lining segment is automatically and continuously scanned, solving the problems of delayed detection timing and magnetic field interference, and improving measurement accuracy and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP CO LTD
- Filing Date
- 2026-04-30
- Publication Date
- 2026-07-17
AI Technical Summary
In the current technology for shield tunnel segment production, the thickness of the reinforcing steel protective layer can only be tested after the finished product is produced. This results in a delay in the testing timing, making it impossible to adjust in a timely manner. Furthermore, there is the problem of magnetic field interference affecting the measurement accuracy.
Employing a lifting mechanism, a moving component, and a contact measuring component, the contact measuring component moves along the surface of the reinforcing bar skeleton to collect data in real time. Combined with the moving component, it achieves automated continuous scanning, eliminating the influence of magnetic field interference and light changes, and allowing measurements to be taken after the reinforcing bars are placed in the formwork.
It enables automated and continuous scanning of protective layer thickness, reducing scrap rate and production costs, improving measurement accuracy, eliminating errors caused by thermal expansion and contraction and installation deviations, and ensuring the accuracy and continuity of measurement.
Smart Images
Figure CN122408685A_ABST