| 摘要 |
Remotely controllable inspection apparatus intended for use in inaccessible, confined spaces such as pipe interiors, especially sewer pipe interiors, has an articulated arm (32) supporting a closed circuit television camera (52) at its distal end. The arm (32) is pivotally mounted on a carriage (24) which is itself longitudinally slidable on a sledge (10). The arm (32) can be elevated about a first, horizontal pivot axis (34), a distal portion (54) of the arm (32) can be swung to one side or the other about a second pivot axis (58), an outer part of the distal portion (54) is rotatable about a longitudinal axis (80), and the camera (52) can be swivelled on the end of the arm (32) about a transverse swivel axis (76). The range of movements provided allows the camera (52) to be positioned off-axis in a pipe and gives a remote operator the ability to inspect the wall of the pipe at close range and to view the interior of lateral branches where they join the pipe. The movement functions described above are all controlled hydaulically for reliability and resistance to immersion in water. The invention includes hydraulic devices for performing these functions, as well as a hydraulically controlled focussing mechanism for the camera (52). |
