The hard coupling device for mine flatbed trucks is meticulously engineered to excel in the challenging and dynamic conditions of underground tunnels. Whether it's navigating steep inclines, declines, or sharp turns, this state-of-the-art solution surpasses traditional soft couplings. It adeptly eliminates 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 advanced device ensures seamless and safe transportation, setting an unprecedented standard for reliability and efficiency in the mining industry.