The hard coupling device for mine flatbed trucks is meticulously engineered to excel in the rigorous and ever-changing conditions of underground tunnels. Designed to navigate challenging inclines, declines, and sharp turns with ease, this state-of-the-art solution outperforms traditional soft couplings. By eliminating vehicle collisions during multi-vehicle transport operations, it addresses and resolves critical issues such as front lifting, rear compression, and operational accidents that commonly occur during ascent, descent, and turning. This device guarantees seamless and safe transportation, setting a new benchmark for reliability and safety in the mining industry.