Positioning device for installing ultra-thin covering layer jacking pipe

The utility model discloses a positioning device for installing an ultrathin covering layer top pipe, which comprises a positioning component, and the positioning component comprises a supporting plate, a supporting disc, two sliding chutes, two positioning rings, a hand wheel, two rotating shafts, two sliding blocks, a screw rod, a rotating disc, four screw rods, a connecting seat and a positioning cone. The two sliding grooves are symmetrically formed in the upper surface of the supporting plate. The rotating discs drive the screw rods, the positions of the four supporting discs can be independently adjusted, then the height of the supporting plate is adjusted so as to be suitable for the uneven ground in a construction pit, the hand wheel drives the lead screw, the lead screw drives the sliding block, the sliding block drives the positioning ring through the rotating shaft, and the left-right position of the pipe jacking body can be adjusted. Therefore, the axis of the jacking pipe body coincides with the