Handheld anti-explosion pneumatic percussion drill

The utility model discloses a handheld anti-explosion pneumatic percussion drill. A spiral key groove and a linear key groove are formed in the outer surface of a piston, a cylinder sleeve, a ratchet wheel, a pawl and a rotating sleeve which are arranged on the periphery of a piston in a sleeving mode are arranged in a machine head, the inner wall of the ratchet wheel is fixedly connected with the spiral key groove piston inserted in the surface, the length of the pawl is equal to that of an outer tooth of the ratchet, the cylinder sleeve is arranged in the rotating cylinder sleeve, and the inner wall of the cylinder sleeve is fixedly connected with a transmission key embedded in a linear key groove. According to the handheld anti-explosion pneumatic percussion drill, a pneumatic mode is adopted, and due to the fact that pneumatic explosion prevention has the advantages of being free of sparks, good in safety performance and the like, the handheld anti-explosion pneumatic percussion drill is mainly used for installing pipelines, erecting power circuits and installing foundation bolts on parts such as rock, brick walls and concrete and for work in tunnels and underwater and narrow space with dangerous moist gas of chemical plants, refineries, buildings, heavy industries, coal mines and the like.