Construction engineering crack detection device

The invention discloses a construction engineering crack detection device which is characterized in that a handle and a supporting table are arranged at one end of the upper surface of a saddle, a crack detector and a controller are arranged on the upper surface of the supporting table, guide rods are arranged on the two sides of the other end of the upper surface of the saddle, a plurality of lifting frames are arranged, and the two sides of each lifting frame are slidably connected with the guide rods through guide blocks; the sliding seat is in sliding connection with the lifting frame, the end, away from the lifting frame, of the sliding seat is connected with an output shaft of a horizontal rotating motor, the horizontal rotating motor is connected with the center position of a rotating plate through a flange, and rotatable crack detection sensors are arranged on the two sides of the rotating plate. The lifting frame can be independently lifted through the cooperation of the longitudinal lead screws and