Construction site isolation guardrail cleaning vehicle

The utility model relates to a guardrail cleaning tool, in particular to a construction site isolation guardrail cleaning vehicle which comprises a cleaning vehicle body, a vehicle-mounted water tank and a support are arranged on the cleaning vehicle body, brush rollers and water spraying devices are symmetrically installed at the ends of the support, and the water spraying devices are located on the outer sides of the brush rollers and correspond to the brush rollers. One side below the vehicle-mounted water tank is connected with the transfer water tank through a horizontal hose, the hose is connected with a water inlet of the transfer water tank, the water inlet of the transfer water tank is connected with a floating ball valve, the transfer water tank is connected with the water spraying device through a pipeline, and the floating ball valve is located on the upper middle portion of the transfer water tank. And the volume of the transfer water tank is smaller than that of the vehicle-mounted water tank. T