Cylinder type permanent magnet speed regulator driven by externally-hung lead screw to axially move

The utility model discloses a cylinder type permanent magnet speed regulator driven by an external lead screw to move axially, which comprises a conductor rotor, a permanent magnet rotor matched with the conductor rotor and an axial moving mechanism driving the permanent magnet rotor to move, the permanent magnet rotor is arranged at one end of a permanent magnet coupler, and a T-shaped cylindrical permanent magnet rotor pulling plate is coaxially arranged outside the permanent magnet coupler. The axial moving mechanism comprises a pair of stretching frames which are oppositely arranged and can be driven by the lead screw mechanism to move in the axial direction of the permanent magnet rotor, and U-shaped grooves are formed in the opposite faces of the stretching frames. The U-shaped grooves of the two stretching frames are matched with the convex edge of the periphery of the permanent magnet rotor pulling plate; when the stretching frame moves, the U-shaped groove is matched with the convex edge to synchrono