Rotatable upward nylon pulley block

The utility model discloses a rotatable upward nylon pulley block which comprises a support frame, a plurality of pulleys are arranged in the support frame, a movable cross beam is arranged at the upper part of the support frame, a guide wheel is arranged on the movable cross beam, and fixed pulleys are respectively at the outer side of the support frame. The pulleys have different specifications and can be applicable to 630 mm, 400 mm and 300 mm conducting wires. The support frame is provided with a base seat. In the utility model, the pulley block is arranged on the support frame, and the pulleys in the support frame are used for performing cable hauling and hoisting during crossing construction and supporting and controlling the advance of conducing and ground wires and guiding and hauling ropes. The fixed pulleys arranged on both sides of the support frame are applied to supporting wheels of an insulating and isolating net and are used for controlling and adjusting the insulating and isolating net. The en