The hard coupling device for mine flatbed trucks is meticulously engineered to excel in the challenging and dynamic conditions of underground tunnels. Whether navigating inclines, declines, or sharp turns, this state-of-the-art solution outperforms traditional soft couplings. It dramatically reduces the risk of vehicle collisions during multi-vehicle transport operations by effectively addressing and resolving critical issues such as front lifting, rear compression, and operational accidents that often occur during ascent, descent, and turning. By ensuring seamless and safe transportation, this device sets a new benchmark for reliability and efficiency in the mining industry, revolutionizing how mining operations are conducted.