Coal mining machine roller dinting amount indicator

The utility model discloses a coal mining machine drum dinting amount indicator which comprises a first indicator scale and a second indicator scale, the first indicator scale is installed on a coal mining machine body close to a coal mining machine cutting arm, and the second indicator scale is installed on one side of the coal mining machine cutting arm. A cutting motor is fixedly installed on the inner side of the coal mining machine cutting arm, the output end of the cutting motor is in driving connection with a cutting roller, a rotating shaft is fixedly installed at the position, close to the top end, of the second indicator scale, the rotating shaft is rotationally connected with the coal mining machine cutting arm, and a balance weight sliding block in sliding connection with the second indicator scale is installed on the outer side of the second indicator scale. An indicating rod is fixedly installed on one side of the balance weight sliding block and faces the first indicating scale, the first indic