The hard coupling device for mine flatbed trucks is meticulously engineered to perform exceptionally in the demanding and ever-changing conditions of underground tunnels. Whether maneuvering through inclines, declines, or sharp turns, this cutting-edge solution outshines traditional soft couplings. It not only prevents vehicle collisions during multi-vehicle transport operations but also tackles and resolves crucial issues like front lifting, rear compression, and operational accidents that often arise during ascent, descent, and turning. By ensuring seamless and safe transportation, this device establishes a new benchmark for reliability within the mining industry.