Overhead line system additional wire suspension device and overhead line system strut device

The invention relates to the technical field of railway electrification overhead line systems, and provides an overhead line system additional wire suspension device and an overhead line system strutdevice. The overhead line system additional wire suspension device comprises an insulator (10), a long hanging ring (20) and a wire clamp device (30) used for clamping an additional wire, wherein theinsulator (10) is rod-shaped, one end of the insulator (10) is provided with a mounting surface (11), the mounting surface (11) is perpendicular to the axial direction of the insulator (10), the other end of the insulator (10) is connected with the long hanging ring (20), and the bottom end of the long hanging ring (20) is connected with the wire clamp device (30). The rod-shaped insulator not only plays a role in insulation and isolation, but also plays a role in supporting, so that the insulator can be mounted on a strut of the overhead line system through the mounting surface, an insulatorstring is not required to b