The hard coupling device for mine flatbed trucks is masterfully engineered to excel in the demanding and ever-changing conditions of underground tunnels. Whether dealing with inclines, declines, or sharp turns, this state-of-the-art solution outperforms traditional soft couplings. It proficiently eliminates vehicle collisions during multi-vehicle transport operations, addressing and resolving critical issues such as front lifting, rear compression, and operational accidents that may arise during ascent, descent, and turning. This device guarantees seamless and safe transportation, establishing a new benchmark for reliability in the mining industry.