Pulley and power transmission line crossing construction method based on same

The invention relates to the technical field of pulleys, and particularly discloses a pulley and a power transmission line crossing construction method based on the pulley. The tackle comprises a tackle main body, the tackle main body comprises a mounting frame, a pulley and an auxiliary assembly for the tackle, the auxiliary assembly comprises an assembly main body used for replacing a yoke plate at the tackle, and the assembly main body is provided with a connecting plate used for being matched with a mounting groove of the yoke plate of the tackle and a pressing wheel assembly used for being corresponding to the pulley; an elastic assembly is arranged between the pressing wheel assembly and the connecting plate and used for forcing the pressing wheel assembly to press the rope body located at the pulley. The construction method comprises the steps that connection between the guide rope and the wire is completed; carrying out high-altitude crossing on the guide rope, and then penetrating the guide rope into