FABRICATION OF BOREWELL RESCUE ROBOT

Borewell rescue operations require a compact, stable, and remotely controlled mechanism capable of descending into narrow shafts, yet traditional manual rescue methods lack precision, repeatability, and operational safety.To address these limitations, a tele-operated Borewell Rescue Robot was fabricated using a lightweight PVC-frame, a dual DC-motor winch system, and an Arduino-based control unit integrated with an HC-05 Bluetooth module.The robotic assembly incorporates a stainless-steel gear-gripper, LED illumination, and a 360° camera for real-time monitoring within confined, low-visibility environments.Controlled descent tests were conducted at 10-30 ft depth under ambient conditions of 29 °C, with stability measured by lateral sway reduction and gripper alignment accuracy.Initial descent showed 92% vertical stability, improving to 97% after adding a ballast module to lower the centre of gravity.The gripper achieved a closing force of 14 N, sufficient for safe harness fastening without causing trauma to the victim.Electrical calculations confirmed a total power consumption of 18 W during peak operation, with individual motor drivers operating at an average of 9-10 A for winch actuation.Results demonstrate that voltage selection, gear reduction, and mechanical balancing directly influence the robot's operational stability inside the borewell.These findings highlight that a modular, sensor-integrated rescue robot significantly improves reproducibility, efficiency, and safety during borewell rescue missions, supporting the modernization of emergency-response systems.