The hard coupling device for mine flatbed trucks is meticulously engineered to thrive in the challenging and dynamic conditions of underground tunnels. Whether navigating steep inclines, declines, or sharp turns, this innovative solution stands head and shoulders above traditional soft couplings. 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 robust device ensures seamless and safe transportation, setting a new benchmark for reliability and efficiency in the mining industry.