Hydraulically-driven large-turning-angle robot joint

By adopting the joint design of hydraulically driven large-angle robots with layers of embedded hydraulically, the problems of joint complexity, redundancy and volume weight of existing hydraulic robots are solved, and efficient and compact large-angle and large-load output are achieved.

CN119748499AActive Publication Date: 2025-04-04HARBIN INST OF TECH
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Patent Information

Application Number
CN202411914332.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-24
Publication Date
2025-04-04
Estimated Expiration
2044-12-24

AI Technical Summary

Technical Problem

The existing hydraulic robot joints have problems such as high complexity and redundancy, as well as large volume and weight.

Method used

The hydraulically driven large-angle robot joint is designed using layer-level inlay, including the housing unit, the torque transmission system and the swing cylinder drive system. The swing cylinder drive system provides reciprocating linear swing drive, which is converted into a rotating torque power source of the torque transmission system, realizing the output of large angles and large loads.

Benefits of technology

It achieves the output of large torque under a smaller external size, achieving a large rotation angle of 0-360°, simplifies the transmission structure, improves control accuracy and sealing effect, and reduces volume and weight.

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Abstract

The invention discloses a hydraulically-driven large-turning-angle robot joint, and relates to the field of robot joints. The problems that an existing hydraulic robot joint is high in complexity and redundancy and large in size and weight are solved. The device comprises a shell unit and further comprises a torque transmission system and a swing cylinder driving system, the torque transmission system and the swing cylinder driving system are connected and then embedded in the shell unit, and the swing cylinder driving system provides reciprocating linear swing driving power and is in sliding connection with the input end of the torque transmission system. Linear motion of swing driving power is converted into a torque power source for rotation of the torque transmission system, and torque is output by the torque transmission system. The required torque is directly output through the swing cylinder to drive the joint, the transmission structure is simplified, and meanwhile the advantage of hydraulic drive on the power mass ratio is utilized. The overall motion performance of the robot is improved, the size and weight of the robot are reduced, and meanwhile the efficient driving capacity is guaranteed. The invention is applied to the humanoid robot.
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