The hard coupling device for mine flatbed trucks is meticulously engineered to conquer the rigorous and ever-changing conditions of underground tunnels. Whether handling steep inclines, sharp declines, or tight turns, this state-of-the-art solution outperforms traditional soft couplings by a wide margin. It expertly prevents vehicle collisions during multi-vehicle transport operations, effectively tackling and resolving crucial issues such as front lifting, rear compression, and operational mishaps that often arise during ascent, descent, and navigation through twists and turns. This device guarantees smooth and secure transportation, establishing a new pinnacle of reliability and safety standards in the mining industry.