Pushing and brushing mechanism and pipeline cleaning device

The utility model relates to the technical field of pipeline cleaning, in particular to a pushing and brushing mechanism and a pipeline cleaning device, which comprise a rotary brushing component, a rotary brushing component and a pushing component, the rotary brushing component comprises a support shaft and a bearing arranged on the outer wall of the support shaft, the rotary brushing component further comprises a limiting block arranged on the bearing, and a positioning brushing device is arranged on the limiting block. A movable scrubbing device is arranged outside the supporting shaft; the pushing rod assembly comprises a mounting head arranged at one end of the supporting shaft and a butt joint piece arranged on the mounting head, through friction force between a strip-shaped brush plate and the inner wall of the pipeline, when the pipeline is grabbed to be cleaned, the supporting shaft rotates firstly, a limiting plate is pushed through a connecting rod at the moment, an arc-shaped brush plate expands o