Convenient-to-use drainage device for foundation construction

The utility model relates to the technical field of foundation pit construction, and discloses a convenient-to-use drainage device for foundation construction, which comprises a supporting table, a water pump is fixedly mounted at the top of the supporting table, and a filtering device with the right side communicated with the water inlet end of the water pump is fixedly mounted at the top of the supporting table. Supporting rods are fixedly installed at the four corners of the top of the supporting table, a connecting plate is fixedly installed at the tops of the supporting rods, a containing frame is fixedly installed at the bottom of the connecting plate, two sliding plates are slidably connected to the inner side of the containing frame, and rolling wheels are fixedly connected to the opposite sides of the two sliding plates. A winding column is rotationally connected between the two rolling wheels, and a balancing weight located below the axis is fixedly installed in the winding column. The convenient-to