Hydraulic machine with protective structure

The utility model relates to the technical field of hydraulic machines, and discloses a hydraulic machine with a protective structure, which comprises a hydraulic machine base, a hydraulic support, a hydraulic cylinder, a protective cover and a rotating component, and the top of the hydraulic machine base is fixedly connected with the bottom of the hydraulic support. The hydraulic support, the hydraulic cylinder, the protective cover, the rotating assembly, the connecting plate and the connecting column are arranged and used in cooperation, then a handle on the front side of a turnover plate is held by hand, the turnover plate is rotated, the turnover plate moves to drive an extrusion block to conduct extrusion in an inner cavity of an extrusion ring, and the extrusion ring ascends to drive the protective cover to ascend; the problems that when some hard materials need to be pressed into powder and the descending pressure of a hydraulic rod is given to the hard materials, a large number of chippings can be sp