Pulley bracket for unfolding wellhead high-voltage cable

The invention relates to the technical field of high-voltage cable laying, and discloses a pulley support for well mouth high-voltage cable laying, which comprises a ground support and an underground support, a supporting pulley and a clamping pulley are arranged at the top end of the ground support, the relative positions of the clamping pulley and the supporting pulley are adjustable, and a pair of support arms is arranged at the position, close to the bottom end, of the ground support and used for being supported on a well mouth; a locking piece is arranged at the bottom end of the ground support and used for abutting against the well wall. A plurality of unfolding pulleys are arranged on the ground bracket above the bracket arm; the underground support comprises a cross arm on the top of the underground support, the cross arm is used for being supported on a bottom cross beam, close to the bottom end, of the ground support, and a guide pulley is arranged on the underground support. After the cable is lift