Introducing an unparalleled advancement in mining transportation: the hard coupling device for mine flatbed trucks. Specifically designed to withstand the rigorous and ever-changing conditions of underground tunnels, this cutting-edge solution triumphs over inclines, declines, and sharp turns where conventional soft couplings often fail. By eradicating collisions during multi-vehicle transport, it meticulously addresses and resolves pivotal issues such as front lifting, rear compression, and operational mishaps that can occur during ascent, descent, and turning. This device not only guarantees seamless and safe transportation but also elevates the benchmark for reliability and efficiency in the mining industry, making it an indispensable asset for modern mining operations.