The hard coupling device for mine flatbed trucks is meticulously engineered to excel in the challenging and dynamic conditions of underground tunnels. Designed for superior performance, this innovative solution seamlessly navigates inclines, declines, and sharp turns, delivering where traditional soft couplings falter. 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 during ascent, descent, and turn maneuvers. This cutting-edge device guarantees flawless and safe transportation, establishing a new benchmark for reliability and efficiency in the mining industry