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