The robust and resilient hard coupling device for mine flatbed trucks is meticulously designed to excel in the demanding and ever-changing environments of underground tunnels. Whether maneuvering through inclines, declines, or navigating sharp bends, this groundbreaking solution surpasses the limitations of traditional soft couplings. It adeptly prevents vehicle collisions during multi-vehicle transport operations, effectively addressing and mitigating critical challenges such as front lifting, rear compression, and operational mishaps that can arise during ascending, descending, and turning maneuvers. This pioneering device not only ensures smooth and secure transportation but also establishes a new benchmark of reliability and safety in the mining industry.