The hard coupling device for mine flatbed trucks is meticulously engineered to excel in the demanding and ever-changing conditions of underground tunnels. Whether navigating steep inclines, sharp declines, or tight turns, this revolutionary solution outperforms traditional soft couplings by a significant margin. It adeptly eliminates vehicle collisions during multi-vehicle transport operations, tackling and resolving vital issues such as front lifting, rear compression, and operational mishaps that can occur during ascent, descent, and turning. This advanced device guarantees smooth and safe transportation, establishing a new benchmark for reliability and safety in the mining industry.