Variable-diameter transferring manipulator device for cylinder liners

The invention relates to the field of cylinder liner production, particularly relates to a variable-diameter transferring manipulator device for cylinder liners, specifically provides a cylinder liner transferring manipulator device which is quick in workstation switching, time-saving and labor-saving during the production and processing of the cylinder liners, and aims at current situations of low automaticity in existing cylinder liner production in China. The device comprises a working table, a transverse driving mechanism and a longitudinal driving mechanism, wherein the transverse driving mechanism and the longitudinal driving mechanism are used for driving the working table to move, a manipulator structure arranged at the lower end of the working table comprises a small cylinder, a connecting shaft, a coupler, a locking nut, symmetric manipulator connecting rods, symmetric manipulator levers, symmetric cross rods, symmetric clamping block connecting plates and symmetric clamping blocks, and all the parts are mounted on a bottom plate.