Bidirectional transfer beam mounting device for lower steel column of support beam

The utility model discloses a bidirectional transfer beam mounting device for a lower steel column of a support beam. The bidirectional transfer beam mounting device comprises a first transfer beam and a second transfer beam, the first transfer beam is horizontally arranged. The second transfer beam is horizontally arranged below the first transfer beam, a first steel wire rope is connected between the end of the second transfer beam and the corresponding end of the first transfer beam, and at least one pair of lifting lugs is arranged at the bottom of the second transfer beam. Firstly, a tower crane is used for placing the steel column to the side of a mounting position; then the tower crane is used for hoisting the bidirectional transfer beam mounting device for the lower steel column of the supporting beam, so that the first transfer beam is located above the supporting beam, the two first steel wire ropes are located on the inner side and the outer side of the supporting beam respectively, and the second