Pay-off equipment and application thereof in erection of catenary carrier cable

The invention relates to the technical field of construction pay-off tools, in particular to pay-off equipment and application of the pay-off equipment in erection of a catenary carrier cable, and aims to solve the technical problems that in the prior art, a cable, placed on a tension applying device, of a pay-off reel is loose; and when the cable at the edge of the wire coil enters the tension applying device, hard friction is generated between the cable and a tension wheel, so that the cable is abraded. The invention provides paying-off equipment. The paying-off equipment comprises a paying-off disc, a belt pressing device and a tension wheel. The tension wheel is coaxially connected with a first belt wheel; the pay-off reel is coaxially connected with a second belt wheel; the first belt wheel, the second belt wheel and the third belt wheel are in transmission connection through a belt; a cable wound on the pay-off reel penetrates through the lantern ring and enters the tension wheel; the first sliding groo