Split mounting type road anti-collision device

The invention discloses a split mounting type road anti-collision device which comprises a base, a top cover and a coaming assembly capable of being folded or unfolded, the coaming assembly in the unfolded state is clamped and fixed between the base and the top cover to form a storage space used for containing buffering materials, and the base and the top cover can be fixedly connected through a fixing assembly; the highway anti-collision device is composed of the base, the surrounding plate assembly and the top cover, the surrounding plate assembly can be folded to be stacked with the base and the top cover for storage, and therefore the occupied space of the device is reduced; in addition, a first sealing piece and a second sealing piece are arranged, the sealing performance of the device is improved, meanwhile, the movement direction of the coaming assembly during folding can be limited, and therefore the occupied space of the device in the folded state is further reduced, the thicknesses of a first coamin