Introducing the hard coupling device for mine flatbed trucks, a marvel of engineering designed to excel in the demanding and ever-changing conditions of underground mining tunnels. This state-of-the-art solution navigates inclines, declines, and sharp turns with unparalleled efficiency, outperforming traditional soft couplings by a wide margin. Engineered to eliminate vehicle collisions during multi-vehicle transport operations, it effectively addresses and resolves critical issues such as front lifting, rear compression, and operational accidents that can occur during ascent, descent, and turning. This device ensures seamless, safe, and reliable transportation, setting a new benchmark for operational safety and dependability in the mining industry.