Description of metal mounting brackets for rail cars: 1. The anchor bolts are installed on the lower part of the main frame, and the lower movable mechanism is connected with the two lower plate chains; the lower supporting wheel is connected with the lower plate chain and the lower rail; the upper movable mechanism is installed on the upper part of the main frame. , the upper supporting wheel is connected with the upper rail and the upper plate chain, the upper rail is installed on the upper movable mechanism; the bracket is connected with the guide rail, the left angle iron and the right angle iron are welded on the guide rail, and are fixed by the first Bolt connection, the guide rail is connected to the rail bottom plate, the movable upper frame is connected to the rail bottom plate, the rearward moving lower frame and the movable upper frame are fixed by a second bolt. The rail car bracket adopts a lower movable mechanism and an upper The movable mechanism can not only…