Municipal height limiting device

The invention relates to the technical field of height limiting frames, in particular to a municipal height limiting device which comprises two stand columns, a lead screw is rotationally installed between the upper end and the lower end of each stand column, a screw block is slidably installed on the outer side wall of each lead screw through threads, a height limiting rod is connected between the two screw blocks, and a displayer is arranged in the middle of one end of the height limiting rod. A cleaning mechanism for removing impurities on the surface of the displayer is arranged above the displayer, and a buffering mechanism for reducing vehicle impact force is arranged on the height limiting rod. Through the arrangement of the cleaning mechanism, after impurities adhere to the displayer, an electric push rod drives a water tank to move up and down, a magic sponge wipes the displayer, meanwhile, a spray head sprays water in the water tank to the displayer, the magic sponge is matched with the water, the i