The hard coupling device for mine flatbed trucks is masterfully engineered to excel in the challenging and dynamic conditions of underground tunnels. Whether navigating inclines, declines, or sharp turns, this state-of-the-art solution outperforms traditional soft couplings by a significant margin. It effectively 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 ensures seamless and safe transportation, setting a new benchmark for reliability and safety in the mining industry, ensuring that operations run smoothly and efficiently under even the most demanding conditions.