Presenting the revolutionary hard coupling device for mine flatbed trucks, meticulously designed to excel in the harsh and ever-changing underground tunnel environments. Whether facing steep inclines, descents, or navigating sharp turns, this state-of-the-art solution surpasses traditional soft couplings, offering unparalleled performance and reliability. It effectively eliminates vehicle collisions during multi-vehicle transport operations, comprehensively addressing and resolving critical challenges such as front lifting, rear compression, and operational mishaps that commonly occur during ascent, descent, and turning maneuvers. This device ensures a seamless and secure transportation process, establishing an unprecedented standard of safety and dependability in the mining industry.