Fixture for live-line replacement of single-string insulator of single-iron cross arm linear concrete pole

The utility model relates to a clamp for live replacement of a single-string insulator of a single-iron cross arm linear concrete pole, which belongs to the technical field of power grid maintenance and comprises a clamp and a fixed pulley assembly. The fixture comprises a left clamping plate (1), a right clamping plate (2) and a supporting plate (3), wherein the left clamping plate (1) and the right clamping plate (2) are vertically fixed at two ends of the supporting plate (3) respectively; the fixed pulley assembly comprises a supporting plate (4), a pulley fixing shaft (5) and a fixed pulley (6). The supporting plates (4) are obliquely fixed on the left clamping plate (1), and the pulley fixing shaft (5) is connected between the supporting plates (4); the fixed pulley (6) is rotatably arranged at the upper left part of the support plate (3) through the pulley fixing shaft (5); the tool has the advantages of being simple in structure and convenient to operate, and the efficiency of replacing the single-str