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 operating 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 is to design the computer PLC signal processing and hydraulic system based on the summary of bridge structural analysis and construction technology, input displacement signals from external monitoring facilities, output hydraulic system oil quantity control signals, and utilize multiple jack sets at the terminal 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 includes: 50 tons to 1000 tons, with lifting heights ranging from 10mm to 500mm.
PLC Synchronization Lifting System Features: High-speed zeroing, low-speed lifting with adjustable lifting and lowering speeds; External (or internal) hydraulic jack with displacement and pressure sensors, load equalizing valves, ensuring high reliability in harsh working conditions; Overload protection function of the load equalizing valve, preventing common cylinder lifting accidents; Advanced oil inlet speed regulation and heavy-load leading hydraulic circuit for high-precision synchronization during lifting, as well as during load-bearing descent; Simple and intuitive operation, allowing adjustments of work orientation such as rolling and pitching; Capable of connecting a color touch screen for real-time display of lifting displacement and load, or a PC for real-time recording of the entire construction process; Expandable to 32 or more points for multi-point synchronization, maintaining multi-point position synchronization and allowing adjustment of load distribution at each support point according to user requirements.
