Automatic curtain wall cleaning machine

The utility model relates to the technical field of glass cleaning, and discloses an automatic curtain wall cleaning machine which comprises a base, a supporting column a and a motor a are fixedly installed on the two sides of the top of the base respectively, and a supporting column b is fixedly installed on the top of the supporting column a; the top of a transmission shaft of the motor a is in transmission connection with a threaded column a, a threaded cylinder is screwed to the outer side of the threaded column a through threads, the outer side of the supporting column a is sleeved with a sleeve, and a supporting block is fixedly installed between the sleeve and the threaded cylinder. According to the automatic curtain wall cleaning machine, the glass wiper and the spray head are arranged, in the using process of the automatic curtain wall cleaning machine, the motor a can drive the threaded column to rotate so that the supporting block can vertically move, meanwhile, the motor b drives the glass wiper t