Line protection device

The utility model relates to the technical field of line protection, and discloses a line protection device, arc-shaped plates are arc-shaped, two ends of a plurality of arc-shaped plates are respectively provided with a connecting plate, and the front and rear sides of the plurality of connecting plates and one end far away from the arc-shaped plates are respectively provided with a first connecting groove. A clamping device is arranged between every two adjacent connecting plates, the clamping devices are used for connecting the two arc-shaped plates through the two adjacent connecting plates, and the clamping devices can be further arranged on the first connecting grooves. By arranging the connecting plates, the tough plates, the limiting grooves, the clamping plates, the fixing blocks, the rotating plates, the third connecting grooves and the fixing plates, the two connecting plates can be connected front and back or left and right, the two arc-shaped plates can be connected through mutual connection of t