This invention provides a
nuclear power pipeline
diameter-changing
cutting and
grinding robot and its
cutting and
grinding repair method, relating to the field of pipeline
grinding and repair technology. The
cutting and grinding
robot includes a drive component, a first support component, a cutting and grinding component, and a second support component. The drive component is connected to the first support component, and the cutting and grinding component is connected to the second support component via universal joints. In the drive component, the support plate is rotatably connected to the drive rod of the drive mechanism, and a screw nut is helically connected to the transmission screw. This invention drives the
drive wheel to unfold through the transmission screw, the screw nut, and the linkage mechanism. In conjunction with the drive cylinder, the arc-shaped wheel and each elastic support wheel change
diameter and fit against the
pipe wall. The universal joints are connected in series to achieve differential speed bending of the
pipe, ensuring the
robot's passability and stability in straight pipes,
diameter-changing pipes, and pipes with large curvature. The
grinding wheel achieves composite grinding of revolution and rotation through the meshing of the central gear and planetary gears, realizing the integration of cutting, grinding, and
chip collection, significantly improving grinding uniformity and repair efficiency.