Cleaning device for water outlet channel

The cleaning device comprises a walking assembly, an auxiliary supporting assembly and a cleaning frame, and the cleaning frame comprises a first cleaning piece, a second cleaning piece and a bottom cleaning piece connected with the first cleaning piece and the second cleaning piece; the first cleaning piece is connected with the walking assembly, and the second cleaning piece is connected with the auxiliary supporting assembly. Cleaning brushes are arranged on the side, close to the walking assembly, of the first cleaning part, the side, close to the auxiliary supporting assembly, of the second cleaning part and the bottom face of the bottom cleaning part. The walking assembly is used for actively walking on the top face of the side wall of the water outlet channel, and the auxiliary supporting assembly is used for passively walking on the top face of the other side wall of the water outlet channel. The walking assembly and the auxiliary supporting assembly are installed on the side walls of the two opposite