Long rod-shaped porcelain insulator

The utility model discloses a long rod-shaped porcelain insulator. The long rod-shaped porcelain insulator comprises a porcelain insulator, two ends of the porcelain insulator are connected with metalconnecting pieces; the porcelain insulator is provided with a hollow cavity. An insulating rubber rod is arranged in the hollow cavity; the metal connecting piece is provided with an inner cavity, the end portion of the porcelain insulator is arranged in the inner cavity in a penetrating mode, an adhesive layer is arranged between the side wall of the porcelain insulator and the metal connectingpiece, the side wall of the porcelain insulator and the metal connecting piece are bonded together through the adhesive layer, and the space between the end face of the porcelain insulator and the inner bottom wall of the metal connecting piece is filled with insulating rubber. According to the long-rod-shaped porcelain insulator of the utility model, the insulating rubber is filled between the porcelain insulator and the