The PLC multi-point synchronous lifting hydraulic system is divided into five parts: hydraulic pump station, PLC computer control system, hydraulic system, displacement and pressure detection, and human-machine interface operation system. This system integrates the hydraulic lifting system, computer PLC signal processing, displacement monitoring, bridge structural analysis, and construction technology, and carries out comprehensive technical development on the integrated system. The core lies in designing the computer PLC signal processing and hydraulic system based on the summary of bridge structural analysis and construction technology, inputting displacement signals from external monitoring facilities, outputting hydraulic system oil quantity control signals, and using multiple jacks to achieve the purpose of balanced, safe, and efficient bridge lifting. The lifting and lowering precision error does not exceed ±0.5mm, and the lifting load ranges from 50 tons to 1000 tons, with a lifting height of 10mm to 500mm.

PLC Synchronization Jacking System Features: High-speed zeroing, low-speed jacking with adjustable lifting and lowering speeds; External (or internal) hydraulic jack with position, pressure sensors, and equalizing valves, ensuring high reliability in harsh working conditions; Overload protection of the equalizing valve prevents common cylinder jacking accidents; Advanced oil supply speed control and heavy-load hydraulic circuit ensure high-precision synchronization during jacking and also during loaded lowering; Simple and intuitive operation, with the ability to adjust working attitudes such as side roll and pitch; Compatible with color touchscreens for real-time display of jacking displacement and load, and can be connected to industrial computers for recording the entire construction process; Expandable to 32 or more points for multi-point synchronization, maintaining synchronization of multiple points while allowing adjustment of load distribution at each support point according to user requirements.