The hard coupling device for mine flatbed trucks is meticulously engineered to excel in the rigorous and ever-changing conditions of underground tunnels. Whether navigating steep inclines, sharp declines, or tight turns, this cutting-edge solution surpasses the capabilities of traditional soft couplings. It eliminates vehicle collisions during multi-vehicle transport operations, effectively addressing critical issues such as front lifting, rear compression, and operational accidents that can occur during ascents, descents, and turns. This device ensures seamless and safe transportation, setting an unparalleled standard for reliability and safety in the mining industry.