The hard coupling device for mine flatbed trucks is masterfully engineered to excel in the demanding and ever-changing conditions of underground tunnels. This innovative solution is designed to perform flawlessly where traditional soft couplings often fail, whether it's navigating inclines, declines, or sharp turns. By effectively eliminating vehicle collisions during multi-vehicle transport operations, it addresses and resolves critical issues such as front lifting, rear compression, and operational accidents that can occur during ascent, descent, and turning. This device ensures seamless and safe transportation, establishing a new benchmark for reliability in the mining industry.