The hard coupling device for mine flatbed trucks is masterfully engineered to excel in the demanding and ever-changing environments of underground tunnels. This innovative solution demonstrates remarkable performance and reliability, effectively navigating inclines, declines, and sharp turns where traditional soft couplings typically fail. By eliminating vehicle collisions during multi-vehicle transport operations, this device addresses and resolves critical issues such as front lifting, rear compression, and operational accidents that often occur during ascent, descent, and turning. It ensures seamless and safe transportation, setting an unprecedented standard for reliability in the mining industry.