Gradient wood pattern with width adjustment adaptive to movable shed frame

The utility model relates to the technical field of installation of a movable shed frame in a tunnel, in particular to a gradually-changing wood mold with a width adjusting function matched with the movable shed frame, a wood mold assembly comprises a wood mold, cone plates and springs, a pair of cone plates which are symmetrically distributed front and back are installed on the two sides of the wood mold in a sliding mode respectively, and side molds are inserted between the pair of cone plates which are adjacent front and back in a sliding mode. The side mold has the beneficial effects that the side mold is supported by arranging the conical plate which is slidably mounted, adjustment of tunnels with different widths is adapted by utilizing sliding of the side mold on the inclined plane, and in the sliding process of the side mold, adjustment of spring extrusion is achieved by extruding the inclined plane, so that the service life of the side mold is prolonged, and the service life of the side mold is prolo