The hard coupling device for mine flatbed trucks is masterfully engineered to excel in the challenging and dynamic conditions of underground tunnels. It is the definitive solution for navigating inclines, declines, and sharp turns, surpassing the performance of traditional soft couplings. This groundbreaking device ensures seamless and safe transportation, 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 can occur during ascent, descent, and turning. By setting a new standard for reliability in the mining industry, this hard coupling device guarantees unparalleled efficiency and safety.