Piston rod and semicircular ring connecting structure

The utility model provides a piston rod and a semicircular ring connecting structure, and relates to the technical field of piston structures. The structure comprises a piston rod, semicircular rings, a piston ring and a piston sleeve, two limiting grooves are formed in the piston rod, the semicircular rings are clamped in the limiting grooves, and the piston ring and the piston sleeve are limited and fixed to the piston rod through the semicircular rings respectively. The structure can be used for a single-acting piston rod structure or a double-acting piston rod structure, and a piston ring and a piston sleeve in the single-acting piston rod structure are connected through threads; a piston ring of the double-acting piston rod is clamped between the two limiting grooves, threads are further arranged on the semicircular ring, and the piston sleeve is connected with the semicircular ring through the threads. According to the structure, the structure of the piston rod is simplified, the connection strength of