Large steel wire plate automatic paying-off tension control device and paying-off method thereof

Provided are a large steel wire plate automatic paying-off tension control device and a paying-off method of the large steel wire plate automatic paying-off tension control device. The large steel wire plate automatic paying-off tension control device comprises a main shaft, a bearing, a fixed base, a brake disc, a lower flange, a brake band, a spring adjusting device, a trapezoid threaded rod, an upper flange, a steel wire inner cylinder, a broken wire limit switch, a broken wire passing sleeve, a basket-shaped threaded rod, a swing arm and an air cylinder. The steel wire inner cylinder is installed between the upper flange and the lower flange, the lower flange is provided with the main shaft and the brake disc, the main shaft is installed on the fixed base through the bearing, and the trapezoid threaded rod is arranged on the upper flange. The large steel wire plate automatic paying-off tension control device is used for winding steel wires on an H-shaped wheel with needed specification in the winding proc