Cement mortar local trowelling device for constructional engineering

The utility model discloses a constructional engineering cement mortar local trowelling device, relates to the technical field of cement mortar trowelling devices, and comprises a moving plate, the middle parts of the front and rear side walls of the moving plate are both fixedly provided with support blocks, and the left and right sides of the two support blocks are both rotatably connected with a left support shaft and a right support shaft through bearings 1. Through cooperation of two left trowelling barrels, two right trowelling barrels, a left driven wheel, a left triangular belt, a left double-groove belt pulley, a left rotating shaft, a first forward and reverse motor, a right driven wheel, a right triangular belt, a right double-groove belt pulley, a right rotating shaft and a second forward and reverse motor, the two left trowelling barrels and the two right trowelling barrels can rotate in the same direction or in the opposite directions; when the two left trowelling barrels and the two right trowe