The hard coupling device designed for mine flatbed trucks is expertly engineered to excel in the harsh and ever-changing conditions of underground tunnels. Whether navigating inclines, declines, or sharp turns, this revolutionary solution outperforms traditional soft couplings. By effectively eliminating vehicle collisions during multi-vehicle transport operations, it addresses and resolves critical issues such as front lifting, rear compression, and operational accidents that occur during ascent, descent, and turning. This device ensures seamless and safe transportation, establishing a new benchmark for reliability and performance in the mining industry.