One-piece type side guard plate device

The utility model belongs to the technical field of rail transit equipment, and particularly relates to a one-piece type side guard plate device which is characterized in that a side guard plate upper support assembly and a side guard plate lower support assembly are respectively arranged at two corners of the upper end and the lower end of a side guard plate assembly, 2-3 roller assemblies are arranged on the side guard plate assembly, the roller assemblies are connected with a connecting rod assembly, and the connecting rod assembly is connected with the connecting rod assembly. A spring with a buffering function is arranged between the side guard plate lower support assembly and the side guard plate lower mounting seat, so that the problems of abnormal sound and advanced fatigue damage of the side guard plate assembly caused by large vertical relative motion amplitude and continuous change of a vehicle are avoided, and meanwhile, excessive impact between the side guard plate assembly and the side guard pla