House building construction cutting device

The utility model belongs to the technical field of cutting devices. The house building construction cutting device comprises a base, the device comprises an outer shell and a fixing block located onone side of the outer shell and fixedly connected through screws, a motor is fixed in the outer shell and electrically connected with an external power source, and one end of an output shaft of the motor penetrates through the outer shell and is detachably connected with a cutting knife wheel together with the fixing block; a winding drum is arranged on one side of an outer shell; a winding rod isrotatably connected to the interior of the winding drum through two bearings; the wire penetrates through the winding drum and is wound on the winding rod at the same time; and a clockwork spring isfixed to the outer surface of the winding rod, one end of the clockwork spring is fixedly connected with the inner surface of the winding barrel, meanwhile, the other end of the clockwork spring is fixedly connected with the ou