The high-tensile hard coupling device for mine flatbed trucks is meticulously engineered to thrive in the challenging and dynamic conditions of underground tunnels. Designed to excel where traditional soft couplings falter, it navigates inclines, declines, and sharp turns with exceptional precision. This groundbreaking solution effectively eliminates vehicle collisions during multi-vehicle transport operations, addressing and resolving critical issues such as front lifting, rear compression, and unexpected operational accidents during ascent, descent, and turning. By ensuring seamless and safe transportation, this device sets a revolutionary new standard for reliability and efficiency in the mining industry.