Protective cover of hydraulic machine

The protective cover of the hydraulic machine comprises a base plate, side fences and a middle fence set, and the base plate is provided with a plurality of supporting feet and a turning plate which is folded upwards. The middle fence set comprises a lower support, a main frame, an auxiliary frame, an electric cabinet and an oil tank, the auxiliary frame, the electric cabinet and the oil tank are fixed to the upper end of the lower support, the lower support is provided with adjusting feet pressed on the base plate, the side fences are in an L shape and are provided with stand columns, net plates and rotatable net doors, the stand columns are provided with connecting pieces, the connecting pieces are fixedly connected with the main frame, and the net doors are connected with the main frame. The main frame is provided with a visual window, an instrument stand, a plurality of supports and a rotatable main door, a dustproof plate is arranged at the upper end of the visual window, the instrument stand is provided