The hard coupling device for mine flatbed trucks is meticulously engineered to excel in the demanding and ever-changing conditions of underground tunnels. Whether it's navigating steep inclines, declines, or sharp turns, this cutting-edge solution outperforms traditional soft couplings by leaps and bounds. It adeptly eliminates vehicle collisions during multi-vehicle transport operations, effectively addressing and resolving critical issues such as front lifting, rear compression, and operational accidents that can occur during ascent, descent, and turning. This revolutionary device guarantees seamless and safe transportation, setting an unprecedented standard for reliability and safety in the mining industry.