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 cutting-edge solution surpasses traditional soft couplings. It excels in mitigating vehicle collisions during multi-vehicle transport operations, effectively addressing and resolving critical issues such as front lifting, rear compression, and operational accidents that can occur during ascent, descent, and turning. This innovative device ensures seamless and safe transportation, setting a new benchmark for reliability and performance in the mining industry.