一种基于行星差动三齿轮结构的大传动比减速器及其传动方法
By designing a planetary differential three-gear structure, it achieves full rigid meshing and coaxial input and output, solving the problems of rigidity and lifespan of existing reducers in high-end equipment. It provides an ultra-large reduction ratio and bidirectional output capability, making it suitable for precision transmission scenarios such as robotics and aerospace.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Filing Date
- 2026-06-13
- Publication Date
- 2026-07-17
AI Technical Summary
Existing reducers cannot simultaneously meet the requirements of full rigidity, high stiffness, minimal structure, and ultra-large single-stage reduction ratio in high-end equipment and long-life scenarios. Harmonic reducers have limited fatigue life, RV reducers have complex structures and high costs, and ordinary planetary gear reducers have large limitations in transmission ratio.
It adopts a planetary differential three-gear structure, with one end of the planet carrier serving as the input shaft and the other end supporting the second gear assembly. The central gear and the axes of the two side gears form a spatial stagger angle of 135°±5°. It uses bevel gear transmission to achieve coaxial input and output and ultra-large reduction ratio, and has the ability to output in the same or opposite directions.
It achieves fully rigid meshing, eliminates the risk of fatigue fracture, reduces the number of parts, shortens the axial length, simplifies the structure, reduces manufacturing costs, and provides a large reduction ratio of 30:1 to 200:1 and bidirectional output capability, making it suitable for applications requiring high precision and coaxiality.
Smart Images
Figure CN122407765A_ABST