The hard coupling device for mine flatbed trucks is meticulously engineered to thrive in the most challenging and dynamic conditions of underground tunnels. Whether navigating steep inclines, sharp declines, or tight turns, this cutting-edge solution excels where traditional soft couplings fail to perform. 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 frequently occur during ascent, descent, and turning maneuvers. This revolutionary device ensures seamless and safe transportation, setting an unparalleled standard for reliability and operational excellence in the mining industry.