Drive for TV-inspection unit, has drive wheels pressed on one-third point in inner side of tube through articulated joint, where one of wheels is adjusted and placed in driving direction, so that unit rotates around its longitudinal axis

摘要

The drive has drive wheels (3) pressed on a one-third point in an inner side of a tube through an articulated joint (4) and rest themselves on a TV-inspection unit, where the joint is provided with narrowed cross-sections. One of the drive wheels is adjusted and placed in a driving direction, so that the inspection unit rotates around its longitudinal axis, where the drive wheels operate synchronously with each other.