| 摘要 |
A movable robot for axial movement through a pipe line comprising two or more intermovable units, each of said movable unit provided with three projecting legs (4, 5) having contact surfaces (4a, 5a). The contact surfaces (4a, 5a) may abut the inner surface of the pipe such that said movable unit is fixed relative to the pipe. One of the movable units can be fixed relative to the pipe, while the other can be rotatable and displaceable relative thereto. As a result, the movable robot may easily pass obstacles during its movement through the pipe. |
