The hard coupling device for mine flatbed trucks is meticulously engineered to excel in the demanding and ever-changing conditions of underground tunnels. Its innovative design outperforms traditional soft couplings, making it the premier choice for navigating inclines, declines, and sharp turns. This exceptional solution effectively prevents vehicle collisions during multi-vehicle transport operations, tackling and resolving critical issues such as front lifting, rear compression, and operational accidents that often occur during ascent, descent, and turning. By ensuring seamless and safe transportation, this device sets a new benchmark for reliability and performance in the mining industry.