Novel prefabricated box-type transformer substation

The utility model discloses a novel preassembled box-type transformer substation. The drying device comprises a bearing type roller, a bottom plate, an upper cover, a heating device and a dehumidifier, the lower side of the bottom plate is of a rectangular plate-shaped structure. The lower surface of the bottom plate is provided with four sets of bearing type rolling wheels distributed in a rectangular array through screws. The upper side of the bearing type roller is of a square box-shaped structure; an upper cover covers the square box-shaped structure on the upper side of the bearing type roller; the upper cover and the bearing type idler wheel are fixed through screws. A sealing ring is arranged in the space, adjacent to the upper cover, of the bearing type rolling wheel. Wherein a heating box shell, a dehumidifier, a junction box and a fan are arranged in the upper cover, the bearing type roller comprises a rotating seat, a connecting fork and a roller main body, the connecting fork is formed by bending