The hard coupling device for mine flatbed trucks is masterfully engineered to thrive in the challenging and dynamic conditions of underground tunnels. Whether navigating inclines, declines, or sharp turns, this innovative solution excels where traditional soft couplings fall short. This device effectively eliminates vehicle collisions during multi-vehicle transport operations, tackling and resolving critical issues such as front lifting, rear compression, and operational accidents during ascent, descent, and turning. It ensures seamless and safe transportation, setting a new gold standard for reliability in the mining industry.