Novel power transmission line construction pay-off device

The novel power transmission line construction pay-off device comprises a rack and a bottom plate, electric push rods which are symmetrically distributed are arranged on the two sides of the bottom face of the rack, the tail portions of the electric push rods are embedded into the rack, and the end portions of rod bodies of the electric push rods are fixedly connected with the top face of the bottom plate; a fixed baffle rotationally connected with the bottom plate is arranged on the inner side of the rack and located right in front of the bottom plate. A group of symmetrically distributed first rollers are arranged on the outer side surface of the rack, a group of fixed columns matched with the first rollers are arranged on the inner side surface of the rack corresponding to the middle positions of the first rollers, and the first rollers and the fixed columns are respectively mounted in the rack and are rotationally connected with the rack; the opposite faces of the two fixing columns are each provided with