Overhead line system suspension structure

The invention discloses a contact network suspension structure. The contact network suspension structure comprises a base, an insulator, a mounting seat and a busbar wire clamp, the base is used for being fixed to the inner wall of a tunnel, the first end of the insulator is hinged to the base, the installation base is fixedly connected with the second end of the insulator, and the busbar wire clamp is fixed to the installation base and used for clamping a busbar. Compared with the prior art, the insulator can rotate relative to the base under the action of external force, so that the overhead line system suspension structure generates self-adaptive deformation under the action of external force such as impact force of a train pantograph, and rigid damage is avoided; according to the invention, the mounting height of the fixed seat on the stand column can be adjusted, so that the height of the busbar wire clamp can be adjusted conveniently; the stand column and the bottom plate which are fixedly connected can