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 hairpin turns, this groundbreaking solution excels where traditional soft couplings falter. It effectively eliminates vehicle collisions during multi-vehicle transport operations, addressing and resolving critical issues such as front lifting, rear compression, and operational mishaps that can occur during ascent, descent, and turning. This advanced device ensures seamless and safe transportation, setting a new benchmark for reliability and efficiency in the mining industry.