Overhead bare wire interphase short circuit preventing support device

The invention discloses an overhead bare wire interphase short circuit preventing support device. The device comprises an insulating support rod. The support rod is in a tubular structure. Bent partswhich are bent downwards are arranged on two ends. Two symmetrical closed rods are arranged inside. The inner ends of two closed rods are hinged with two connecting rods. Two connecting rods are hinged with each other. A vertically through strip through hole is arranged in the middle of the support rod. Two connecting rods pass through the upper side of the strip through hole. A hinge shaft at thehinge is connected with the connecting rods. A pull ring is arranged on the lower end of each connecting rod. After the pull rings are pulled downward, two connecting rods are driven to push the closed rods to extend out of the closed bent parts. According to the invention, the insulating support rod is arranged on an overhead bare wire to prevent short circuit caused by swing of phases of wiresblown by wind; the operatio