The hard coupling device for mine flatbed trucks is expertly designed to perform in the demanding and ever-changing environments of subterranean tunnels. Whether dealing with steep inclines, sharp declines, or jagged turns, this revolutionary device outstrips traditional soft couplings in performance and safety. It eradicates vehicle collisions during multi-vehicle transport operations, tackling critical issues like front lifting, rear compression, and operational accidents that often arise during ascent, descent, and maneuvering. This device ensures flawless and secure transportation, establishing a groundbreaking benchmark for reliability and safety in the mining industry.