Volume 8, No. 1, January 2019

General Information

  • ISSN: 2278-0149 (Online)
  • Abbreviated Title:  Int. J. Mech. Eng. Robot. Res.  
  • Editor-in-Chief: ​Prof Richard (Chunhui) Yang, Western Sydney University, Australia
  • Associate Editor: Prof. B.V. Appa Rao, Andhra University; Prof. Ian McAndrew, Capitol Technology University, USA
  • Managing Editor: Murali Krishna. B
  • DOI: 10.18178/ijmerr
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International Journal of Mechanical Engineering and Robotics Research
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Development of Pipe Holding Mechanism and Bending Unit Using Extension Type Flexible Actuator for Flexible Pipe Inspection Robot

Keichi Kusunose, Tetsuya Akagi, Shujiro Dohta, Wataru Kobayashi, and Kengo Nakagawa
Okayama University of Science, Okayama, Japan

Abstract—To reduce the inspection cost of water supply pipe, various pipe inspection robots have been developed. In the previous study, a novel pipe inspection robot using a flexible pneumatic cylinder and pipe holding mechanism that could move forward along to the pipe by changing the robot’s body naturally was proposed and tested. In this paper, to improve its mobility and responsibility, a pipe holding mechanism using an extension type flexible pneumatic actuator whose volume change is smaller than the previous one using a balloon is proposed and tested. In addition, to change the travelling direction of the robot, a compact bending unit using shorter extension type flexible actuators is proposed and tested. As a result of its driving test, the tested thin holding mechanism can hold a pipe without increasing its longitudinal length.The tested bending unit can bend 90 deg. toward every radial direction with the length of the unit becomes two-third short from the previous one.

Index Terms— holding mechanism; compact bending unit; extension type flexible pneumatic actuator; pipe inspection robot.

Cite: Keichi Kusunose, Tetsuya Akagi, Shujiro Dohta, Wataru Kobayashi, and Kengo Nakagawa, "Development of Pipe Holding Mechanism and Bending Unit Using Extension Type Flexible Actuator for Flexible Pipe Inspection Robot," International Journal of Mechanical Engineering and Robotics Research, Vol. 8, No. 1, pp. 129-134, January 2019. DOI: 10.18178/ijmerr.8.1.129-134