The invention relates to an internal washing device for containers including a base with a structure including telescopically extendable sections and in which at least one cleaning element is housed. The base includes a drive shaft, each section includes at least one toothed longitudinal segment configured to engage with at least one pinion fastened to the drive shaft. The sections include a push pawl. The initial section incorporates a support element on the forward end, and the additional sections incorporate a pull pawl and a recess for the fastening of the corresponding push pawl, such that the drive shaft has the ability to operate all the sections without needing to move.
