Bullet train roof maintenance support

The utility model discloses a bullet train roof maintenance support and relates to the technical field of bullet train maintenance equipment. Comprising a platform mechanism, a cleaning mechanism is installed in the platform mechanism, the cleaning mechanism sprays water to clean a bullet train after a bullet train roof is overhauled, the platform mechanism comprises a protective shed, pedestrian channels are formed in the two sides of the protective shed, and overhauling corridors are installed on the two sides of the inner wall of the protective shed in a suspended mode; rows of spraying devices are installed at the bottom of the crossing table to spray water downwards, rotatable cleaning rollers are arranged between the overhauling corridor and the supporting base, after the roof of the bullet train is overhauled, the spraying devices are started to start spraying water, the cleaning rollers are driven to rotate when the bullet train is started, the rotating cleaning rollers make contact with the outer sur