Energy-saving type coal mining machine capable of automatically lifting cover plate

The invention discloses an energy-saving type coal mining machine capable of automatically lifting a cover plate, comprising a frame, wherein the frame is divided into a fixed frame, a liftable frameand a movable frame; the energy-saving type coal mining machine also comprises a cutting unit, a traction unit, a control unit, an atomizing cooling unit and a lifting structure, wherein the cutting unit comprises a first cutting part and a second cutting part which are of a symmetric structure and are respectively arranged at two sides of an alternating current traction coal mining machine; the traction unit is connected with the cutting unit; the control unit is connected with the traction unit by a connecting piece; the atomizing cooling unit is arranged in a first traction part; and the lifting structure is arranged between the control unit and the frame. According to the invention, due to the arrangement of the automatic stretching structure, a cutter capable of cutting has a protective effect, and the arrang