Abstract
A unilateral self-locking mechanism (USM) was proposed to increase the tractive ability of the inchworm in-pipe robots for pipeline inspection. The USM was basically composed of a cam, a torsional spring and an axis. The self-locking and virtual work principles were applied to studying the basic self-locking condition of the USM. In order to make the cooperation between the crutch and telescopic mechanism more harmonical, the unlocking time of the USM was calculated. A set of parameters were selected to build a virtual model and fabricate a prototype. Both the simulation and performance experiments were carried out in a pipe with a nominal inside diameter of 160 mm. The results show that USM enables the robot to move quickly in one way, and in the other way it helps the robot get self-locking with the pipe wall. The traction of the inchworm robot can rise to 1.2 kN, beyond the limitation of friction of 0.497 kN.
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References
WANG Dian-jun, LI Run-ping, HUANG Guang-ming. Progresses in study of pipeline robot [J]. Machine Tool and Hydraulics, 2008, 36(4): 185–187. (in Chinese)
CHOU C, JUNG S. Pipe inspection robot with an automatic tracking system using a machine vision [C]// Proceedings of 2006 SICE-ICASE International Joint Conference. Busan: SICE-ICASE Press, 2006: 5647–5652.
XIA Qin-xiang, SHANG Yue, ZHANG Shuai-bin, RUAN Feng. Numerical simulation and experimental research on the multi-pass neck-spinning of non-axisymmetric oblique tube [J]. Chinese Journal of Mechanical Engineering, 2008, 44(8): 78–84. (in Chinese)
TACHE F, FISCHER W, CAPRARI G, SIEGWART R, MOSER R, MONDADA F. Magnebike: A magnetic wheeled robot with high mobility for inspecting complex-shaped structures [J]. Journal of Field Robotics, 2009, 26(5): 453–476.
LEE Y P, KIM B, LEE M G, PARK J. Locomotive mechanism design and fabrication of biomimetic micro robot using shape memory alloy [C]// Proceedings of International Conference on Robotics and Automation. Barcelona: IEEE Press, 2004: 5007–5012.
WAKIMTO S, NAKAJIMA J, TAKATA M, KANDA T, SUZUMORI K. A micro snake like robot for small pipe inspection [C]// IEEE Proceedings of International Symposium on Micromechatronics and Human Science. Nagoya: IEEE Press, 2003: 303–308.
TANG De-wei, LIANG Tao, JIANG Sheng-yuan, DENG Zong-quan, YU Wei-zhen. Mechanism and simulation analysis of mechanical self-adaptive pipe-robot [J]. Robot, 2008, 30(1): 29–33.
OMORI H, NAKAMURA T, YADA T. An underground explorer robot based on peristaltic crawling of earthworms [J]. Industrial Robot, 2009, 36(4): 358–364.
ZHANG Rong-yi, WANG Ke-jun, SHI Wei, BEN Xian-ye. Development of new peristalsis micro in-pipe robot based on SMA [J]. Journal of Nanjing University of Science and Technology, 2009, 33(S1): 252–256. (in Chinese)
GUO Tong, KE Ying-lin, LI Jiang-xiong. Inchworm-like in-pipe micro-robot actuated by piezoelectric slotted cymbal [J]. High Technology Letters, 2005, 15(11): 35–38. (in Chinese)
CHOI C, JUNG S, KIM S. Feeder pipe inspection robot with an inch-worm mechanism using pneumatic actuators [J]. International Journal of Control, Automation, and Systems, 2006, 4(1): 87–95.
NAKAZATO Y, SONOBE Y, TOYAMA S. Development of an In-pipe micro mobile robot using peristalsis motion [J]. Journal of Mechanical Science and Technology, 2010, 24(1): 51–54.
LI Peng, MA Shu-gen, LI Bin, WANG Yue-chao. Design of a mobile mechanism possessing driving ability and detecting function for in-pipe inspection [C]// Proceedings of International Conference on Robotics and Automation. Pasadena: IEEE Press, 2008: 3992–3997.
LIM J, PARK H, MOON S, KIM B. Pneumatic robot based on inchworm motion for small diameter pipe inspection [C]// Proceedings of the 2007 IEEE International Conference on Robotics and Biomimetics. Sanya: IEEE Press, 2007: 15–18.
LIM J, PARK H, AN J, HONG Y S, KIM B, YI B J. One pneumatic line based inchworm-like micro robot for half-inch pipe inspection [J]. Mechatronics, 2008, 18(7): 315–322.
ROH S G, KIM D W, LEE J S, MOON H, CHOI H R. In-pipe robot based on selective drive mechanism [J]. International Journal of Control, Automation, and Systems, 2009, 7(1): 105–112.
GUO S X, PAN Q X, KHAMESEE M B. Development of a novel type of micro robot for biomedical application [J]. Microsyst Technol, 2008, 14: 307–314.
LIU Pin-kuan, WEN Zhi-jie, SUN Li-ning. An in-pipe micro robot actuated by piezoelectric bimorphs [J]. Chinese Sci Bull, 2009, 54: 2134–2142.
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Foundation item: Project(2007AA04Z256) supported by the National High-Tech Research and Development Program of China
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Qiao, Jw., Shang, Jz., Chen, X. et al. Unilateral self-locking mechanism for inchworm in-pipe robot. J. Cent. South Univ. Technol. 17, 1043–1048 (2010). https://doi.org/10.1007/s11771-010-0596-z
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DOI: https://doi.org/10.1007/s11771-010-0596-z