The hard coupling device for mine flatbed trucks is meticulously engineered to excel in the challenging and dynamic environments of underground tunnels. Designed to thrive where traditional soft couplings falter, this cutting-edge solution performs exceptionally on inclines, declines, and sharp turns. It eliminates the risk of vehicle collisions during multi-vehicle transport operations, addressing critical issues such as front lifting, rear compression, and operational accidents during ascent, descent, and turning. By ensuring seamless and safe transportation, this device sets a new benchmark for reliability and operational excellence in the mining industry.