Pipeline cleaning mechanism

The invention discloses a pipeline cleaning mechanism which comprises a transmission flexible shaft. The transmission flexible shaft is provided with screw blades and comprises a plurality of wire strips, the screw blades are provided with a plurality of connecting strips, and the wire strips and the connecting strips are woven to form the transmission flexible shaft. When the transmission flexible shaft is bent, stress applied onto the connecting strips positioned on one side of the outward projection direction of the transmission flexible shaft is different from that applied onto the connecting strips positioned on one opposite side of the outward projection direction of the transmission flexible shaft. The connecting strips have a certain elasticity, so that the connecting strips can bear a certain elastic deformation can generate corresponding elastic deformation within elastic limit of the connecting strips when periodic variation stress is applied onto the connecting strips, theperiodic variation stress