Upper load-bearing sliding door

The utility model discloses an upper load-bearing sliding door which comprises an upper guide rail, a lower guide rail and a door body. The door body is arranged between the upper guide rail and the lower guide rail, and a clamping groove is arranged in the lower side of the upper guide rail. A plurality of hanging rods are fixed on the upper side of the door body, and a rolling wheel capable of rolling along the clamping groove is arranged on the upper end of each hanging rod. A guide groove is arranged in the lower guide rail, and a rolling mechanism is arranged between two ends of the lower side of the door body and the lower guide rail. The rolling mechanism comprises a rotating wheel and a guide block, and the lower end of the door body contacts with the lower guide rail through the rotating wheel in the rolling mechanism. The door body is small in friction resistance at the opening and closing time, and more smooth and labor-saving. Even if the wind load action is large, normal opening and closing of th