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Design and experiments on a new wheel-based cable climbing robot

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2 Author(s)
Fengyu Xu ; Sch. of Mech. Eng., Southeast Univ., Nanjing ; Xingsong Wang

This paper proposes an ameliorated wheel-based cable inspection robot, which is able to climb up a vertical cylindrical cable on the cable-stayed bridge. The newly-designed robot in this paper is composed of two equally spaced modules, which are joined by connecting bars to form a closed hexagonal body to clasp on the cable. Another amelioration is the newly-designed electric circuit, which is employed to limit the descending speed of the robot during its sliding down along the cable. For the safe landing in case of electricity broken-down, a gas damper with a slider-crank mechanism is introduced to exhaust the energy generated by the gravity when the robot is slipping down. For the present design, with payloads below 3.5 kg, the robot can climb up a cable with diameters varying from 65 mm to 205 mm. The landing system is tested experimentally and a simplified mathematical model is analyzed. Several climbing experiments performed on real cables show the capability of the proposed robot.

Published in:

Advanced Intelligent Mechatronics, 2008. AIM 2008. IEEE/ASME International Conference on

Date of Conference:

2-5 July 2008