The hard coupling device for mine flatbed trucks is expertly designed to excel in the demanding and ever-changing conditions of underground tunnels. Whether tackling inclines, declines, or navigating sharp turns, this cutting-edge solution surpasses the limitations of traditional soft couplings. By effectively eliminating vehicle collisions during multi-vehicle transport operations, it tackles and resolves crucial issues such as front lifting, rear compression, and operational accidents that can occur during ascent, descent, and turning. This device guarantees seamless and safe transportation, setting a new benchmark for reliability and safety in the mining industry.