Pay-off equipment for building construction

The utility model discloses pay-off equipment for building construction, which comprises two fixed plates, bearing blocks are fixed at the lower ends of the two fixed plates, a U-shaped plate is fixedon one side of one bearing block, a movable plate is fixed on one side of the other bearing block, one end of the movable plate is inserted into the U-shaped plate, and the other end of the movable plate is inserted into the U-shaped plate. The lower ends of the two bearing blocks are connected with two fixing blocks through rotary joints, lifting grooves are formed in the lower ends of the fixing blocks, and lifting mechanisms are arranged in the lifting grooves. The cable winding and unwinding device is convenient and flexible to move, capable of buffering force generated during jolting, good in damping performance, capable of conveniently clamping cable rolls of different length specifications during use, high in adaptability, capable of reducing influences on cables caused by scraping, convenient to wind, unw