一种T构转体桥球铰应力监测与动态调整装置
By installing vibrating wire strain gauges and pressure sensors on the ball joint of the swivel bridge, and combining data acquisition with microprocessor-based optimization calculations, rapid and accurate monitoring and dynamic adjustment of the ball joint stress were achieved. This solved the problems of inaccurate stress monitoring and slow response in traditional devices, and improved construction safety and accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHENGZHOU ENG CO LTD CHINA RAILWAY SEVENTH GRP
- Filing Date
- 2025-08-08
- Publication Date
- 2026-07-17
AI Technical Summary
In the construction of existing swing bridges, the ball joint stress monitoring uses single-point sensors, which cannot obtain the overall stress distribution, have low adjustment accuracy, slow response speed, and are difficult to meet the needs of large-tonnage swings. There is also a lack of a closed-loop control system for stress monitoring and structural optimization.
The system employs vibrating wire strain gauges and pressure sensor modules for comprehensive monitoring. Combined with a data acquisition unit, microprocessor, and hydraulic pressurization and rotation system, it achieves dynamic stress adjustment. The microprocessor performs optimization calculations every five minutes to establish a real-time mapping relationship between stress field, displacement field, and hydraulic parameters. Automatic adjustment is then achieved using dynamic leveling components.
It achieves high accuracy and rapid response in stress monitoring, shortens stress optimization time, reduces stress non-uniformity, and improves the safety and accuracy of the rotation process.
Smart Images
Figure CN224517832U_ABST
Abstract
Claims
1. A device for stress monitoring and dynamic adjustment of ball joints in a T-shaped rotating bridge, comprising a ball joint structure for the rotating bridge, the ball joint structure including a lower turntable, an upper turntable, an upper ball joint, a lower ball joint, an annular base, and a turntable, the annular base being disposed on the lower turntable, the bottom of the lower ball joint being disposed on the annular base, the upper ball joint and the lower ball joint being connected by a rotating shaft, the top of the upper ball joint being disposed on the turntable, the turntable being disposed on the upper turntable, and a plurality of anchor rods being disposed on the top of the upper turntable, characterized in that: The upper turntable is equipped with a hydraulic pressurization and rotation system via anchor rods. The upper surface of the lower ball joint and / or the lower surface of the upper ball joint are equipped with a strain monitoring module and a pressure sensor module. Both the strain monitoring module and the pressure sensor module are connected to a data acquisition unit via data acquisition lines. The data acquisition unit is connected to a microprocessor via corresponding data connection lines. The microprocessor is connected to a dynamic leveling component via corresponding data connection lines.
2. The stress monitoring and dynamic adjustment device for T-structure swing bridge spherical hinge according to claim 1, characterized in that: The dynamic leveling component includes a hydraulic station control layer. The upper and lower sides of the hydraulic station control layer are respectively equipped with an upper oil bladder group and a lower oil bladder group. Both the upper and lower oil bladder groups include at least six individually working zone oil bladders. Each zone oil bladder is connected to the hydraulic station control layer through a corresponding battery proportional valve.
3. The stress monitoring and dynamic adjustment device for T-structure swing bridge spherical hinge according to claim 2, characterized in that: The strain monitoring module includes several annularly arranged vibrating wire strain gauges, and a first mounting groove corresponding to the vibrating wire strain gauge is provided on the upper surface of the lower ball joint and / or the lower surface of the upper ball joint.
4. The stress monitoring and dynamic adjustment device for ball hinge of T-structure swing bridge according to claim 3, characterized in that: The pressure sensor module includes several first pressure sensors arranged in a ring, and a second mounting groove corresponding to the first pressure sensor is provided on the upper surface of the lower ball joint and / or the lower surface of the upper ball joint.
5. The stress monitoring and dynamic adjustment device for ball hinge of T-structure swing bridge according to claim 4, characterized in that: Vibrating wire strain gauges are radially distributed, with density decreasing from the center to the outer edge.
6. The stress monitoring and dynamic adjustment device for T-structure swing bridge spherical hinge according to claim 5, characterized in that: The first pressure sensors are arranged at equal intervals along the circumference, with a spacing of 50–80 mm.
7. The stress monitoring and dynamic adjustment device for T-structure swing bridge spherical hinge according to claim 6, characterized in that: The annular base includes a central receiving part and a rotating part located on the outside of the receiving part. The rotating part has an annular groove, and a support foot is provided inside the annular groove. A lower pad is installed at the bottom of the support foot, and the top of the support foot is connected to the lower surface of the turntable. Several second pressure sensors are evenly arranged circumferentially inside the annular groove.
8. The device for monitoring and dynamically adjusting the stress of the ball joint of a T-shaped rotating bridge according to claim 7, characterized in that: Both the inner and outer sides of the annular groove are equipped with jack reaction seats, and the bottom surface of the jack reaction seats is set on the rotating part.