The hard coupling device for mine flatbed trucks is masterfully engineered to excel in the demanding and ever-changing conditions of underground tunnels. Whether navigating inclines, declines, or tight turns, this cutting-edge solution shines where traditional soft couplings falter. It proficiently eliminates vehicle collisions during multi-vehicle transport operations, addressing and resolving critical issues such as front lifting, rear compression, and operational accidents that can occur during ascent, descent, and turning. This device guarantees seamless and safe transportation, setting an unprecedented standard for reliability in the mining industry.