The hard coupling device for mine flatbed trucks is meticulously designed to excel in the demanding and ever-changing environment of underground tunnels. This cutting-edge solution outperforms traditional soft couplings, especially when navigating steep inclines, sharp declines, and tight turns. It significantly reduces the risk of 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. By ensuring seamless and safe transportation, this device sets a new benchmark for reliability and operational excellence in the mining industry.