The hard coupling device for mine flatbed trucks is meticulously engineered to flourish in the rigorous and ever-changing conditions of underground tunnels. Whether it's maneuvering steep inclines, navigating sharp declines, or tackling tight turns, this innovative solution surpasses traditional soft couplings, offering unmatched performance. It adeptly eradicates vehicle collisions during multi-vehicle transport operations and effectively resolves critical issues such as front lifting, rear compression, and operational accidents that typically occur during ascent, descent, and turning. This cutting-edge device guarantees smooth, secure, and reliable transportation, elevating the standard of safety and dependability within the mining industry.