Vertical jack dismounting device

The utility model discloses a vertical jack dismounting device, which relates to the field of jack dismounting and comprises a support frame, a sliding fixed seat, a power device and a dismounting sleeve, the sliding fixing seat is arranged on the supporting frame, can linearly slide relative to the supporting frame and is used for fixing the cylinder body; the dismounting sleeve is arranged on the supporting frame, can rotate relative to the supporting frame and is used for fixing the nut type guide sleeve and the piston rod; the power device is used for driving the dismounting sleeve to rotate; the rotating axis of the dismounting sleeve is parallel to the sliding direction of the supporting frame. The dismounting sleeve is driven by the power device to rotate, the nut type guide sleeve is dismounted from the cylinder body, the sliding fixing base is driven by the linear driving device to slide in the direction parallel to the rotating axis of the dismounting sleeve, the piston rod is pulled out of the cyli