A high-power reduction joint for an underwater robotic arm

By designing a high-power deceleration joint for underwater robotic arms, employing a single-stage live gear reduction system and a multi-roller contact structure, the problems of large joint size and insufficient rotational torque in underwater robots are solved, achieving efficient transmission and sealing, making it suitable for industrial-grade heavy-duty operations.

CN115256453BActive Publication Date: 2026-03-03WEIHAI BEZER ROBOT TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-08-11
Publication Date
2026-03-03

AI Technical Summary

Technical Problem

Existing robotic arm joints cannot simultaneously meet the requirements of miniaturization and heavy-duty industrial operations for underwater robots, as they are large in size and lack sufficient rotational torque.

Method used

A high-power reduction joint comprising a drive chamber and a main housing was designed, employing a single-stage live gear reduction system and a multi-roller contact structure, combined with insulating lubricating oil and a three-layer sealing design, to achieve efficient transmission and sealing of the rotary drive device.

Benefits of technology

It achieves a compact structure and strong load-bearing capacity, which can meet the needs of heavy-duty operations of industrial-grade underwater robots, while reducing the difficulty and cost of processing.

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Abstract

The application discloses a high-power reduction joint for an underwater mechanical arm, which comprises a driving bin and a main shell connected with the driving bin, a rotating driving device is arranged in the driving bin, a rotating end of the rotating driving device is connected with a shock wave cam rotatingly arranged in the main shell, an inner wall of the main shell is provided with a movable tooth fixed gear ring corresponding to an eccentric transmission surface of the shock wave cam, a movable support is rotatingly arranged in the main shell, a plurality of roller assembly components are circumferentially and intervally arranged on the movable support and are matched with the inner circumferential tooth surface of the movable tooth fixed gear ring and the eccentric transmission surface of the shock wave cam, and an output end of the movable support is connected with a main output end outside the main shell. When the rotating end of the rotating driving device rotates, the shock wave cam is driven to rotate, the roller assembly components are circumferentially rotated under the joint action of the eccentric transmission surface of the shock wave cam and the inner circumferential tooth surface of the movable tooth fixed gear ring, the output end of the movable support is driven to rotate, and the main output end is further driven to rotate.
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Citation Information

Patent Citations

  • Integrated driving joint of underwater operation system

    CN101716768A

  • Two ends output movable teeth reduction driver

    CN201080990Y

  • High-power speed reduction joint for underwater mechanical arm

    CN217728784U