Road sweeper truck operation principle : The secondary engine and the fan are the two core components of the road sweeper truck. The auxiliary engine provides power for the operation of fan, so that the road waste is sucked into the interior of the car to achieve the road cleaning. The sweeping plate realizes the function of lifting and outward stretching by hydraulic pressure. The hydraulic motor drives to from a high-speed rotation, sweeping the garbage from the outside to the bottom of the vehicle, and the garbage baffle prevents the garbage from leaking out, and the rear suction nozzle sucks the garbage stored inside. A circular water spray frame is arranged above the sweeping disc, and the water mist is generated by the electric diaphragm pump, and the dust is sprayed during the cleaning. The three heights of the nozzle wheel of the road sweeper truck can be adjusted to ensure a reasonable gap between the nozzle and the surface, so as to achieve a more ef...