Cross shaft sleeve convenient for oiling

The utility model discloses a universal joint pin sleeve convenient for refueling, and belongs to the technical field of automobile accessories. Comprising a sleeve body, an oil storage cavity is formed in the end, away from an opening, in the sleeve body, a sealing column is detachably arranged in an oil outlet hole, a mounting groove is formed in the peripheral wall of the sleeve body, and an observation groove with the same height as the oil storage cavity is formed in the face, close to the oil storage cavity, of the mounting groove and communicates with the oil storage cavity; and a transparent observation block is arranged in the mounting block and is aligned with the observation groove. According to the universal joint disclosed by the utility model, the transparent observation block is arranged, so that the capacity of lubricating oil in the oil storage cavity can be conveniently observed, the lubricating oil can be re-injected into the oil storage cavity in time, violent friction between the universa