Design of Lifting Control System for Unloading Platform Based on S7-200 SMART PLC

This study develops an economical hydraulic synchronization control system for a grain depot unloading platform based on S7-200 SMART PLC. We implemented the complete system design, including PLC programming, HMI monitoring interface development, and field commissioning. The solution successfully resolves hydraulic cylinder synchronization issues during platform lifting operations. Practical applications demonstrate 30% faster unloading speed, higher labor efficiency, and significant labor cost savings. Synchronization optimization reduces tipping risks, enhances equipment safety, and achieves all design objectives, demonstrating considerable potential for industrial applications.