Hardmeter with fixing mechanism having telescopic extension function

The utility model discloses a durometer with a fixing mechanism with a telescopic extension function, which comprises a mounting rack, a movable sliding table, an electric telescopic rod, a hardness detector and a driving stepping motor, and the movable sliding table is longitudinally arranged in the mounting rack close to the bottom end in a sliding and penetrating manner; and a winding roller is rotationally mounted at the edge of one side of the top end of the mounting frame through a fixing frame. The fixing mechanism is provided with a hardness meter with a telescopic extension function, and when the whole device is used, through arrangement of a limiting mounting groove, a threaded rod, a limiting nut block, an electric telescopic rod and a driving stepping motor, the whole device rotates through the threaded rod and is limited through the limiting mounting groove, so that the limiting nut block in the whole device moves at the same time; therefore, collision hardness detection on different positions of