Enclosed air-cooled motor casing

The utility model relates to the technical field of motor casings, in particular to a closed air-cooled motor casing, which comprises a casing, an outer air guide cylinder is sleeved on the periphery of the casing, a heat dissipation air duct is formed between the outer surface of the casing and the inner surface of the outer air guide cylinder, openings are arranged at two ends of the outer air guide cylinder, and the openings are communicated with the casing. An outer fan cover is installed at an opening in one end of the outer air guide barrel in a matched mode through screws, an outer fan corresponding to the outer fan cover in position is arranged in the outer air guide barrel and located on one side of the machine shell, and an air inlet is formed in the side face of the outer fan cover; a wind shield is installed along the inner arc corner of the outer fan cover through screws. According to the scheme, air generated by the outer fan can be exhausted from the front end of the machine shell through the f