The hard coupling device for mine flatbed trucks is meticulously engineered to excel in the challenging and dynamic environments of underground tunnels. Designed to navigate inclines, declines, and sharp turns with unparalleled precision, this cutting-edge solution surpasses traditional soft couplings. It effectively eliminates vehicle collisions during multi-vehicle transport operations, tackling crucial issues such as front lifting, rear compression, and operational accidents during ascent, descent, and turning. This innovative device ensures seamless and safe transportation, elevating the standard for reliability and safety in the mining industry.