Fan-mounting device

The utility model relates to a fan installing device, comprising a box body, and a plurality of fans installed in the box body, which is characterized in that: the box body includes an upper cover and a lower cover, the inner surfaces of the upper cover and the lower cover are provided with positioning columns corresponding to the installation holes of the fans, the fans are installed between the upper cover and the lower cover, the installation holes sleeve the corresponding positioning columns, the upper cover and the lower cover are tightly buckled with each other via the own claws, which are then fastened by two to four screws. The upper cover and the lower cover can be integrally plastic molded in a same mould, whose structures are basically symmetric. In the fan installing device of the utility model, only two to four screws are needed to reach the fastening effects, so the assembly is simplified, the installation efficiency is improved, the utility model is maintainable and assembling, furthermore, the appearance of the box body is more concise.