Power transmission line group tower derrick hydraulic winch system

The utility model discloses a hydraulic winch system for a tower-assembling derrick of a power transmission line, and relates to the technical field of overhead power transmission line construction equipment. The system comprises a hydraulic traction machine and a tailstock take-up unit. The tailstock take-up unit comprises a main frame body, and a cycloid device and a take-up device are sequentially arranged on the main frame body from front to back. The cycloid device comprises a guide column and a driving lead screw rotationally connected with the main frame body, a sliding frame is arranged between the guide column and the driving lead screw, the sliding frame can do reciprocating motion in the axial direction of the driving lead screw under the one-way rotation effect of the driving lead screw, and a carrier roller assembly is arranged on the sliding frame. And the take-up device comprises a wire coil which is rotationally connected with the main frame body through a rotating shaft. And the driving screw