A small-tooth-difference speed reducer

CN224533361UActive Publication Date: 2026-07-21LIANGSHI MACHINERY TECH SHANGHAI CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
LIANGSHI MACHINERY TECH SHANGHAI CO LTD
Filing Date
2025-07-30
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

In existing reducers with small tooth difference, the impact load caused by machining errors and vibration between the internal gear ring and the planetary gears affects the service life and generates vibration noise.

Method used

The floating internal gear ring design is adopted. It is fixed in the circumferential direction to the outer ring of the input flange or the connecting bearing through the intermediate connecting ring, while allowing movement in the radial direction. Combined with the elastic pad and connecting groove key structure, the radial floating and axial stability of the internal gear ring are realized.

Benefits of technology

This reduces wear between the planetary gears and the internal gear ring, improves operational stability and service life, reduces vibration and noise, and ensures the reliability and stability of the structure.

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Abstract

The utility model relates to a few tooth difference speed reducer, including inner tooth ring, input flange and connecting bearing, the bearing outer ring of input flange and connecting bearing is located the both ends side of inner tooth ring respectively, and the bearing outer ring is fixed with input flange, still include intermediate connecting ring, the intermediate connecting ring sets up between inner tooth ring and input flange and is connected with both, or intermediate connecting ring sets up between inner tooth ring and the bearing outer ring of connecting bearing and is connected with both, inner tooth ring is fixed with input flange or the bearing outer ring of connecting bearing in circumferential direction through intermediate connecting ring, and can be opposite activity in radial direction, the both ends of inner tooth ring are directly or indirectly with input flange and the bearing outer ring of connecting bearing and are opposite respectively.
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