The hard coupling device for mine flatbed trucks is meticulously engineered to excel in the demanding and ever-changing conditions of underground tunnels. Designed to navigate steep inclines, sharp declines, and tight turns with ease, this groundbreaking solution outperforms traditional soft couplings by a wide margin. It effectively eliminates the risk of vehicle collisions during multi-vehicle transport operations, addressing and resolving critical issues such as front lifting, rear compression, and operational accidents that frequently occur during ascent, descent, and turning. By ensuring seamless and safe transportation, this device is setting a new benchmark for reliability and safety in the mining industry.