The utility model discloses a hydraulic shearing device using an oil cylinder
piston as a guide mechanism, and relates to the technical field of hydraulic shearing equipment. The device comprises an oil cylinder, a
piston rod is arranged on one side of the oil cylinder, a tool rest base is arranged on one side of the oil cylinder and located on the outer side of the
piston rod, a sliding guide sleeve is arranged in an inner cavity of the tool rest base, the bottom of the sliding guide sleeve is fixedly connected with an upper pressing plate through a bolt, and a
grease nipple is arranged at the bottom of the upper pressing plate. One end of the
piston rod is fixedly connected with a movable tool apron, one side of an inner cavity of the tool rest base is fixedly connected with a limiting block, and the sides, opposite to the movable tool apron, of the limiting block are fixedly connected with cutters. The oil cylinder and the
piston rod serve as guiding elements of the shearing mechanism at the same time, the structure is simplified by more than 30%, functions are integrated, the piston guiding function and the hydraulic driving function are integrated, the piston guiding structure is an integrated piston guiding structure, the
piston rod is provided with a precise guiding section, and guiding precision and stability are greatly improved.