The hard coupling device for mine flatbed trucks is engineered to thrive in the challenging and dynamic conditions of underground tunnels. This state-of-the-art device excels in navigating inclines, declines, and sharp turns, where traditional soft couplings often fall short. It effectively eliminates vehicle collisions during multi-vehicle transport operations, addressing and resolving critical issues such as front lifting, rear compression, and operational accidents that can occur during ascent, descent, and turning. This innovative solution ensures seamless and safe transportation, setting a new standard for reliability in the mining industry.