The hard coupling device for mine flatbed trucks is meticulously engineered to thrive amidst the rigorous and ever-changing conditions of underground tunnels. Whether it's navigating steep inclines, sharp declines, or tight turns, this groundbreaking solution outperforms traditional soft couplings by a significant margin. It effectively eradicates vehicle collisions during multi-vehicle transport operations, skillfully addressing and resolving critical issues such as front lifting, rear compression, and operational mishaps that often occur during ascent, descent, and turning maneuvers. This expertly designed device ensures seamless, safe, and efficient transportation, thereby setting a new benchmark for reliability and innovation in the mining industry.