Fastening assembly

A fastening assembly, comprising:

• a mounting cylinder frame, wherein the mounting cylinder frame is provided with a first vertical beam and a transmission rod, the mounting cylinder frame is provided with a butting block at a top of the first vertical beam, the transmission rod passes through the butting block, and a side wall of the first vertical beam is provided with a bulge;
• a movable part, wherein the movable part is connected with the transmission rod, and the movable part comprises a movable part body and a connecting block;
• a turnover part, wherein the turnover part is arranged on the first vertical beam and the movable part body is rotationally connected with the turnover part, the turnover part is butted with the bulge, the turnover part is located between the butting block and the movable part, and the turnover part has a vertical state and a horizontal state,
• wherein the transmission rod is configured to drive the movable part to move along an axial direction of the first vertical beam, so as to drive the turnover part to switch between the horizontal state or the vertical state under an action of the bulge;
• the movable part body is slidably connected with the first vertical beam, and the movable part body is provided with a mounting cavity;
• the connecting block is embedded in the mounting cavity, and the connecting block is sleeved on the transmission rod and threaded with the transmission rod;
• and
• the movable part body is provided with a connecting shaft, the turnover part is provided with a guide slot, and the connecting shaft passes through the guide slot.