The hard coupling device for mine flatbed trucks is meticulously engineered to thrive in the challenging and dynamic conditions of underground tunnels. Whether adeptly navigating inclines, declines, or sharp turns, this cutting-edge solution surpasses traditional soft couplings. It effectively eliminates vehicle collisions during multi-vehicle transport operations, comprehensively addressing and resolving critical issues such as front lifting, rear compression, and operational accidents during ascent, descent, and turning. This state-of-the-art device ensures seamless and safe transportation, setting an unparalleled new standard for reliability and safety in the mining industry.