Hydraulic plate shearing machine capable of preventing upwarp during feeding

The utility model discloses a hydraulic plate shearing machine capable of preventing upwarp during feeding, and belongs to the technical field of hydraulic plate shearing machines. The hydraulic plate shearing machine comprises a gantry frame and a bottom frame, and further comprises a lifting gate which is arranged on the inner side of the gantry frame, a hydraulic driving part is arranged at the top of the gantry frame, a horizontal sliding seat is arranged at one end of the hydraulic driving part, and the horizontal sliding seat is in sliding connection with the gantry frame; and a transmission rocker arm is arranged at the other end of the hydraulic driving part. In order to solve the problem that a plate is in direct contact with a machine body, impact force generated by shearing can directly act on the machine body and the plate, and abrasion is prone to occurring, in the whole shearing process, the horizontal pressing plate continuously compresses and fixes the plate which is not sheared, the plate can