Rare earth permanent-magnetic brushless direct current motor

The utility model discloses a rare-earth permanent-magnetic brushless direct-current motor. The surface of a motor casing is in a fin body structure and is natural cooling. A motor stator winding is disposed by whole perfusing epoxy glue or vacuum-impregnated insulated paint. Carbon fiber or glass wool fiber adding with epoxy glue is wrapped on the exterior surface of a motor rotor. A rotor bracket of which the shape like the Chinese character ' ri' is composed of a rotor yoke, a spoke ring and a spoke sleeve. Fan-shaped rare earth permanent magnet steel or tile-shaped rare earth permanent magnet steel is used as a magnetic pole and clung on the surface of the rotor yoke. Both sides of the rotor yoke are separately provided with a ring-shaped rotor end plate. The utility model has the advantages of high efficiency, energy saving, wide speed regulation range, convenient speed regulation, low speed, high pulling torque, harsh environment resistance, simple structure, light weight, etc. The utility model can be used as various dragging driving motors, and is especially suitable for exclusive using motors for pumping oil in an oil field, pumping groundwater in a coal mine, etc. Teetering log type pumping equipment in an oil or water extracting system can be replaced.