Locking device for watermeter clamp ring

The utility model provides a locking device for a watermeter clamp ring, which belongs to the technical field of machinery. The locking device solves the problems that the existing watermeter clamp ring adopts manual extrusion, therefore, the labor intensity is large, and the efficiency is low; simultaneously, the extrusion is not in place. The locking device for the watermeter clamp ring comprises a rack, wherein a positioning groove used for positioning a watermeter is arranged on the rack; at least three pressing sheets are arranged at the outer side of the positioning groove; the end faces of the adjacent pressing sheets can push against each other, and all the pressing sheets can surround a circle; a driving mechanism and a guide mechanism are arranged between each pressing sheet and the rack; the driving mechanisms can lead the pressing sheets to move; and the guide mechanisms can lead the pressing sheets to move along the radial line of the positioning groove. The locking device for the watermeter clam