Rail type highway tunnel robot with lamp cleaning function

The invention relates to a rail-mounted highway tunnel robot with a lamp cleaning function, which comprises a traveling mechanism, a lifting mechanism, a mechanical arm and an actuating mechanism, the lifting mechanism is fixedly mounted at the upper end of the traveling mechanism, the mechanical arm is fixedly mounted at the upper end of the lifting mechanism, and the actuating mechanism is arranged on the mechanical arm. The auxiliary positioning piece is automatically adjusted and clamped to rails on the two sides of the lamp for positioning, the upper end of the dust collection assembly can make contact with the surface of the lamp, meanwhile, the wiping assembly is adjusted so that the upper end of the wiping assembly can be consistent with the dust collection assembly in height, and finally the walking mechanism moves along the roadside of the tunnel and is movably positioned through the auxiliary positioning piece. It is ensured that the dust collection assembly conducts continuous dust removal and dus