Constant-temperature shearing machine

The utility model discloses a constant-temperature shearing machine, which belongs to the technical field of asphalt shearing equipment and comprises a heat insulation box, a heat insulation cover and a shearing machine. A heating device is arranged in the heat preservation box, and the heat preservation cover is arranged on the top of the heat preservation box. The heat preservation cover comprises a plurality of cover bodies which are symmetrically arranged along the center of the heat preservation box, a plurality of circumferences are sequentially arranged, one ends of the cover bodies are hinged to the heat preservation box, the other ends of the cover bodies can rotate relative to the center of the heat preservation box, and the working end of the shearing machine penetrates through the center of the heat preservation cover, extends into the heat preservation box and is used for shearing asphalt. In the shearing process, the heat preservation box is sealed through the heat preservation cover, so that as