Formula that can rise automatically rotary drum fan that heads on

The utility model provides a formula that can rise automatically rotary drum fan that heads on, it can automatically regulated fan height, and can guarantee that four supports of fan keep on a level, and is great when having saved the time, has guaranteed the levelness of whole fan. It includes the fan, the fuselage of fan is provided with four fan support, and run through respectively on four fan support and threaded connection has perpendicularly to the screw rod, every support in the screw rod base that corresponds the position to the bottom of screw rod perpendicularly, every is perpendicularly to the upper end epirelief of the screw rod up end in the fan support that corresponds, every perpendicular upper end to the screw rod is connected with driving motor's output respectively, and four driving motor insert same motor control system.