The hard coupling device for mine flatbed trucks is meticulously engineered to thrive in the challenging and dynamic conditions of underground tunnels. Our innovative solution excels where traditional soft couplings invariably fall short. Whether navigating steep inclines, treacherous declines, or sharp turns, this device guarantees superior performance and operational safety. It proficiently eliminates vehicle collisions during multi-vehicle transport operations, effectively addressing and resolving critical issues such as front lifting, rear compression, and operational accidents that often occur during ascent, descent, and turning. With this device, seamless and secure transportation becomes a reality, setting an unprecedented standard for reliability and safety in the mining industry, ensuring peace of mind and operational efficiency for all mining operations.