The hard coupling device for mine flatbed trucks is meticulously engineered to excel in the strenuous and dynamic conditions of underground tunnels. Whether navigating steep inclines, declines, or sharp turns, this state-of-the-art solution outperforms traditional soft couplings. It effectively eliminates vehicle collisions during multi-vehicle transport operations, tackling critical issues such as front lifting, rear compression, and operational accidents that typically occur during ascent, descent, and turning. By ensuring seamless and safe transportation, this device sets a new benchmark for reliability and safety in the mining industry.