The hard coupling device for mine flatbed trucks is meticulously engineered to excel in the challenging and ever-changing environment of underground tunnels. This state-of-the-art solution is designed to navigate inclines, declines, and sharp turns with ease, surpassing the limitations of traditional soft couplings. By effectively eliminating vehicle collisions during multi-vehicle transport operations, it tackles and resolves critical issues such as front lifting, rear compression, and operational accidents that commonly occur during ascent, descent, and turning. This device ensures seamless and safe transportation, setting an unprecedented standard for reliability and efficiency in the mining industry.