The hard coupling device for mine flatbed trucks is meticulously engineered to excel in the rigorous and ever-changing environment of underground tunnels. Whether navigating steep inclines, sharp declines, or tight turns, this cutting-edge solution surpasses the capabilities of traditional soft couplings. It proficiently eliminates vehicle collisions during multi-vehicle transport operations, tackling and resolving critical issues such as front lifting, rear compression, and operational accidents that can arise during ascent, descent, and turning. This advanced device guarantees seamless and safe transportation, setting an unprecedented standard for reliability and performance in the mining industry.