Tao Ren, Yin Zhang, Yujia Li, and Lin Xian
Self-balancing, active helical, in-pipe robot, compound planetary gearing
As pipelines increase in age, the required number of pipeline inspections and maintenance also increases on a yearly basis. Regular inspection and maintenance of pipelines using in-pipe robots can eliminate safety hazards in time and ensure production safety. The current study proposes an active helical drive self-balancing in-pipe robot that is based on compound planetary gearing. The design of the driving and supporting systems is described. The gear ratio and obstacle negotiating of the robot are analysed. Traction experiment of the prototype is conducted to demonstrate the effectiveness of the proposed structure. Within the same length, the proposed configuration can be connected in series to a multi-section drive system. The presented in-pipe robot has larger traction force than an active helical drive support-balanced in-pipe robot. The robot can conduct further inspections and implement repair tools to complete pipeline inspection and maintenance work simultaneously.
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