Permanent magnet motor capable of carrying out rapid limiting

The invention discloses a permanent magnet motor capable of carrying out rapid limiting. The permanent magnet motor comprises a shell, a mounting seat, a damping plate and open grooves, wherein a sliding rail is arranged at the bottom end of the shell, a connecting plate is arranged in the sliding rail, the mounting seat is arranged at the bottom end of the connecting plate, fastening bolts are arranged on the two sides of the bottom end of the connecting plate, a fastening hole is formed in one end of the fastening bolt, the damping plate is arranged at the bottom end of the mounting seat, and the open grooves are formed in the mounting seat and the damping plate. According to the invention, by arranging the open groove, the telescopic cover, the guide rail and the connecting plate, when the device is installed, due to the fact that an original installation hole is changed into the open groove, and the specification of the open groove is larger than that of a fixing hole, a worker can conveniently and rapidl