Cast iron pipe fitting roundness correcting machine

The invention relates to the technical field of cast iron pipe fitting rounding, in particular to a cast iron pipe fitting rounding machine which comprises a bearing mechanism, a rolling mechanism installed on the bearing mechanism and a transmission delivery mechanism installed on the rolling mechanism. The outer frame is fixed to the top of the horizontal rail through bolts, the symmetrically-distributed outer sleeves are installed at the two ends of the top of the outer frame, meanwhile, the power-assisted rods are movably installed in the two outer sleeves, and at the moment, the pressing rollers fixedly installed outside the power-assisted rods are driven by the first crawler belt to conduct rolling operation on the transversely-arranged cast iron pipe; two pressure springs which are respectively connected to the interiors of two outer sleeves can respectively and continuously pressurize downwards towards T-shaped outer frames in ring grooves in two ends of a power-assisted rod, and at the moment, a pres