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