Underwater sediment recovery robot

The multi-wheel drive system with a crank mechanism enables the underwater sediment recovery robot to navigate through challenging environments with foreign objects, ensuring efficient sediment recovery by preventing wheel jams and overcoming obstacles.

JP2026107274APending Publication Date: 2026-06-30TOKYO ELECTRIC POWER CO HOLDINGS INC
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
TOKYO ELECTRIC POWER CO HOLDINGS INC
Filing Date
2024-12-18
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing underwater sediment recovery robots face issues with smooth operation due to foreign objects becoming lodged between the crawler drive wheels and grother, causing the robot to stop moving, especially in environments with rubble and abandoned equipment like nuclear power plant buildings.

Method used

The robot employs a multi-wheel drive system with a crank mechanism, featuring drive and driven wheels on both starboard and port sides, connected by eccentric link plates, allowing all-wheel drive and enabling the robot to navigate over obstacles and break sandbags efficiently.

Benefits of technology

The robot can operate smoothly even with foreign objects present, efficiently recovering sediments by avoiding wheel jams and overcoming obstacles, thus ensuring uninterrupted sediment recovery.

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Abstract

The objective is to provide an underwater sediment recovery robot that can operate smoothly even when foreign objects or other debris are present in the water. [Solution] The configuration of the underwater sediment recovery robot (recovery robot 100) according to the present invention comprises a robot body 110 that can travel underwater, a sediment suction mechanism 150 for recovering sediment from the seabed, drive wheels 162a, 162b and driven wheels 164a, 164b, 166a, 166b arranged on the starboard and port sides of the robot body 110, respectively, two motors 168a, 168b that rotate the starboard and port drive wheels 162a, 162b individually, and two link plates 170a, 170b that connect the drive wheels and driven wheels on the starboard and port sides, respectively, wherein a crank mechanism is formed by connecting the link plates at an eccentric position from the rotation axis of the drive wheels and driven wheels, and the robot body is all-wheel drive.
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