Cleaning system, charging assembly, cleaning apparatus, and tray

A cleaning apparatus, comprising:

• a rolling brush rotatable around a first axis;
• a spray assembly for supplying a liquid to the rolling brush;
• a scraper assembly connected to the spray assembly and having a plate rotatable around a second axis, the plate is located below the spray assembly, and the second axis is parallel to the first axis;
• a driver configured for exerting on the scraper assembly a force toward the rolling brush, to drive the plate to rotate;
• the plate has a first position and a second position;
• at the first position, the plate is maintained abutting against the rolling brush under a driving force from the driver;
• the second position is a limit position that the scraper assembly reaches under an action of the driver in a case where the rolling brush is not installed;
• and in a case where the rolling brush is installed, the plate rotates from the second position in a direction away from the rolling brush.

A cleaning assembly for a cleaning apparatus, wherein the cleaning assembly comprises:

• a rolling brush cover;
• a spray assembly fixed inside the rolling brush cover;
• a scraper assembly connected to the spray assembly and having a plate rotatable around a second axis, wherein the plate is located below the spray assembly;
• and
• a driver configured to drive the plate to rotate relative to the spray assembly and press the plate tightly against the rolling brush.

A cleaning apparatus, comprising:

• a floor brush assembly;
• a rolling brush assembly, configured to rotate relative to the floor brush assembly to clean a to-be-cleaned surface, wherein the rolling brush assembly has an inner cavity;
• a driving device connected to the floor brush assembly, wherein the driving device has a heat dissipation channel, and the driving device is configured to extend into the inner cavity of the rolling brush assembly and be in drive fit with the rolling brush assembly;
• wherein
• an external airflow enters the heat dissipation channel from a connection end between the driving device and the floor brush assembly, and enters the inner cavity of the rolling brush assembly through the heat dissipation channel.