Line pendant device for building construction

The utility model relates to a plummet device for building construction, which belongs to the field of building construction and comprises a main body frame, an equipment frame is fixedly connected to the inner wall of the main body frame, a motor is fixedly connected to the interior of the equipment frame, a rotary drum is arranged on the outer wall of the right side of the equipment frame, and the rotary drum is fixedly connected with the output end of the motor. The inner wall of the main body frame is rotationally connected with a collecting wheel, the collecting wheel is fixedly connected with the rotary drum, and the inner wall of the lower end of the inner wall of the main body frame is fixedly connected with a support; the collecting device has the advantages that the collecting wheel is driven by the output end of the motor to rotate, the rotating collecting wheel can ascend and descend a metal pendant, the communicating pipe moves left and right below the collecting wheel through movement of the mov