Overhead line pay-off device of high-voltage transmission line

The overhead line pay-off device comprises an upper side plate and a lower side plate which are correspondingly arranged up and down, the upper side plate is fixed to a pay-off device fixing support, a moving mechanism is arranged on the upper side plate, and the moving end of the moving mechanism is connected with the lower side plate; the lower plane of the upper side plate and the upper plane of the lower side plate are respectively provided with a plurality of pay-off roller mounting positions, and pay-off rollers are respectively and correspondingly mounted at the pay-off roller mounting positions; and the pay-off roller wheels at the upper side plate and the pay-off roller wheels at the lower side plate are in one-to-one correspondence to form a plurality of pay-off roller wheel clamping groups with adjustable intervals. The overall structure is simple and convenient, when cable pay-off is conducted on a high-voltage transmission line, the pay-off roller clamping sets with the corresponding number can b