Railing machine with railing arm rotating horizontally

A partition plate is arranged in a control box and divides the control box into two chambers which are a first chamber and a second chamber in sequence from top to bottom, a box door is arranged on the front side of the control box, one end of the box door is rotationally connected with the control box through a rotating shaft, and the other end of the box door is provided with a rotating shaft. One end of the rotating shaft is rotationally connected with the partition plate, the other end of the rotating shaft penetrates through the upper end of the control box to be fixedly connected with the lower surface of the handrail arm connecting plate, and the other ends of the two second handrail arms are rotationally connected with the upper end and the lower end of the left side wall of the third connecting plate correspondingly; the output end of the second motor is fixedly connected with one end of a screw rod, and the other end of the screw rod penetrates through the second connecting plate and the first conne