Portable transmission shaft cutting device

The utility model belongs to the technical field of transmission shaft machining, and particularly relates to a portable transmission shaft cutting device which comprises a cutting device body and a portable box. The top of the portable box body is rotationally connected with a portable box cover through a hinge; a first elastic cushion is fixedly connected to the interior of the portable box cover; straps are fixedly connected to the side wall of the portable box body; a pair of straps is provided and is symmetrically arranged; a handle is fixedly connected to the top of the portable box cover; a storage groove is formed in the middle of the portable box body; according to the step, a worker can carry the cutting device body on the back, so that when the worker moves the cutting device body, the situation that the worker manually carries the cutting device body is reduced, the worker can carry the cutting device body for a long time due to the fact that the cutting device body is carried on the back of the w