Liftable servo motor

The utility model discloses a liftable servo motor which comprises a supporting plate, U-shaped seats are fixed at the two ends of the supporting plate, supporting sleeves are fixed at the two ends in the U-shaped seats in a penetrating mode, fixing bolts are inserted into the two ends of the tops of the sides, away from each other, of the U-shaped seats, and an internal thread cylinder is fixed in the supporting plate in a penetrating mode. The lifting rods at the four corners of the bottom of the mounting base are inserted into the supporting sleeves with the matched sizes correspondingly, and the adjusting rods are in threaded connection with the inner wall of the inner threaded cylinder through outer threaded teeth, so that rotation of the handle can drive the adjusting rods to pull the mounting base to ascend and descend; the servo motor body is arranged in the supporting sleeve, so that the servo motor body can be subjected to lifting adjustment of the adaptive height when being assembled with the conne