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This utility model provides a rotary frame for a gantry crane, including a rotary frame body, connecting pins, an integrated housing, and a cover plate. The connecting pins are respectively installed at both ends of the upper part of the rotary frame body, with the axial direction of the connecting pins being the same as the length direction of the rotary frame body, for use with pulley boxes and spreader beams. The integrated housing is installed within the rotary frame body, and the integrated housing is equipped with an openable and closable cover plate. The internal space of the integrated housing is used for installing electrical components and wiring. This rotary frame for a gantry crane has the advantages of strong compatibility, good safety, high integration, and longer service life.