Pipe laying and paying-off device

The utility model relates to the technical field of pay-off construction, in particular to a buried pipe pay-off device which comprises a bottom plate, a movable rod, a two-way lead screw, a limiting block B and a support. A side plate A and a side plate B are arranged on the bottom plate, a clamping groove A is formed in the side plate A, and a clamping groove B is formed in the side plate B. The movable rod is rotationally arranged in the clamping groove A, a mounting plate is arranged on the movable rod, and a transverse shaft is rotationally arranged on the mounting plate and clamped into the clamping groove B. A sliding groove is formed in the transverse shaft, two sliding blocks are symmetrically arranged in the sliding groove in a sliding mode, and two clamping blocks are symmetrically arranged on the sliding blocks in an elastic sliding mode. The two-way lead screw is rotationally arranged in the sliding groove and is in driving connection with the sliding blocks on the two sides. The outer end of the