The hard coupling device for mine flatbed trucks is meticulously engineered to excel in the demanding and dynamic environment of underground tunnels. Whether maneuvering through steep inclines, sharp declines, or tight turns, this advanced solution outperforms traditional soft couplings, offering superior reliability and performance. It effectively eliminates the risk of vehicle collisions during multi-vehicle transport, addressing critical issues such as front lifting, rear compression, and operational accidents that can occur during ascent, descent, and turning. This device ensures smooth, safe, and efficient transportation, setting a new benchmark in the mining industry for durability and dependability.