Auxiliary device for mounting and dismounting mutual inductor

The utility model discloses an auxiliary device for mounting and dismounting a mutual inductor. The auxiliary device comprises a hollow plate and an adjusting unit, l-shaped moving plates are slidably connected into dovetail sliding grooves symmetrically formed in the bottom wall face of the hollow plate in the longitudinal direction, and bolt placing bases are placed in grooves formed in the outer side ends of the upper surfaces of the L-shaped moving plates; the adjusting unit comprises a gear and tooth grooves, the gear is rotationally connected to the middle of the top wall face of the hollow plate through a rotating shaft, the tooth grooves which are transversely and evenly distributed are formed in the opposite inner side faces of the two L-shaped moving plates, and the tooth grooves located in the same L-shaped moving plate are connected with the gear in an engaged mode; wherein rectangular magnetic limiting blocks are arranged in the middles of the inner bottom wall faces of grooves formed in the ends