Automatic conveyor and automatic cleaning device for the handrail belt thereof

An automatic cleaning device for a handrail belt of an automatic conveying device, the automatic cleaning device comprising:

• a base;
• a first cleaning unit and a second cleaning unit mounted on the base, wherein the first cleaning unit and the second cleaning unit are arranged in a front and back way in a moving direction of the handrail belt;
• a cleaning liquid conveying device, for conveying cleaning liquid to the first cleaning unit or the second cleaning unit;
• and
• a controller configured to control the cleaning liquid conveying device to deliver the cleaning liquid to one of the first cleaning unit and the second cleaning unit that first comes into contact with the handrail belt based on a running direction of the handrail belt during a cleaning operation;
• wherein the cleaning liquid conveying device comprises a main pipeline connected to the cleaning liquid tank, a drive pump on the main pipeline, a first branch and a second branch respectively connected to the first cleaning unit and the second cleaning unit, and a switching valve selectively connecting the first branch to the main pipeline or connecting the second branch to the main pipeline;
• wherein, when performing a cleaning operation, the controller controls the drive pump to start operating, controls the drive mechanism to drive the first cleaning unit and the second cleaning unit to move to the operating position, and controls the switching valve so that the cleaning liquid is supplied to one of the first cleaning unit and the second cleaning unit that first comes into contact with the handrail belt, and when stopping the cleaning operation, the controller controls the drive mechanism to drive the first cleaning unit and the second cleaning unit to the idle position, and controls the drive pump to stop operating.