Recyclable back-jacking supporting structure of walking type tower crane

The utility model belongs to the technical field of walking type tower cranes, and particularly relates to a recyclable back-jacking supporting structure of a walking type tower crane, which comprises a steel base, a bottom weight, a standard weight, a pressure bearing weight, a jack, a circular steel plate and a circular steel sleeve, the bottom weight comprises an inner steel sleeve, concrete, a horizontal annular stirrup, a vertical stirrup, a lifting rib and a lifting ring; the two marking weights are stacked and placed at the top end of the bottom weight; the pressure bearing weight is placed at the top end of the marking weight; the round steel sleeve wraps the outer part of a combined body of the bottom weight, the standard weight and the pressure bearing weight; according to the back-jacking supporting structure, the basement top plate is stably supported through the steel base, the bottom weight, the standard weight, the pressure bearing weight, the jack, the circular steel plate and the circular ste