A municipal bridge cleaning and maintenance device

The invention relates to a municipal bridge cleaning and maintenance device, and belongs to the field of bridge maintenance devices. The municipal bridge cleaning and maintenance device comprises a mounting plate, a suction fan, a dust collecting bag and a dust extracting pipe, wherein one air inlet end of the suction fan is communicated with the dust extracting pipe, one air outlet end of the suction fan is communicated with the dust collecting bag, a gap is left between the main beam and the auxiliary beam, one end of the dust extracting pipe is inserted into the gap and a brush and a through hole are arranged on the side wall of one end of the dust extracting pipe inserted into the gap. A main beam is provide dwith a guide groove along that length direction of the main beam, A movable member is arranged on the mounting plate, When cleaning, the moving part drives the mounting plate to move, at this time, the dust extraction pipe moves in the gap, the bristles pull the impurities atthe gap and enter the dus