Window cleaning machine

Abstract

A window cleaning machine is used to move on non-horizontal surfaces. It includes: a machine base , a walking device, a cleaning device , an air extraction device, a first main scraper and a driving module. The walking device moves the window cleaning machine over the surface. The cleaning device includes a suction cup, which is coupled to the base . The suction cup and the surface are configured to form a closed space, so that the window cleaning machine can move on the surface without being attracted by gravity and sliding down. The air extraction device is configured to generate negative pressure in the closed space. The first main scraper is located on the first side of the machine base . The driving module is connected to the first main scraper to control the switching of the first main scraper between an operating state in contact with the surface and a separation state away from the surface.

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