Portable sleeve installing machine

A portable casing pipe installing machine comprises a vertically-arranged stand column, a height adjusting device is installed at the bottom of the stand column, a casing pipe clamping and lifting mechanism is installed on the stand column, the casing pipe clamping and lifting mechanism comprises a connecting frame arranged on the stand column, and two sets of clamping assemblies which are symmetrically arranged are installed at the two ends of the connecting frame. Each clamping assembly comprises a mounting seat arranged on the connecting frame, two first rotating shafts are arranged on the mounting seat, each first rotating shaft is sleeved with a swing frame, the swing frame can rotate with the first rotating shaft as the center, a second rotating shaft and a third rotating shaft are further installed on the swing frame, a clamping grooved wheel is installed on the second rotating shaft, and a clamping groove wheel is installed on the third rotating shaft. A tension spring is installed between the third r