An assembly method for an NW type composite planetary gear transmission device

CN122083129APending Publication Date: 2026-05-26AECC HUNAN AVIATION POWERPLANT RES INST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
AECC HUNAN AVIATION POWERPLANT RES INST
Filing Date
2026-03-06
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

The existing NW type compound planetary gear transmission gear matching verification method has poor operational guidance, especially in the case of non-integer tooth intervals, it is difficult to achieve simultaneous correct meshing of all double planetary gears, and it cannot be applied to other types of compound planetary gear transmission assembly.

Method used

By establishing a unified tooth position identification system for each double planetary gear, and using predetermined assembly parameters to calculate the target tooth position identification and meshing position identification, it is ensured that all double planetary gears mesh correctly with the sun gear and the internal gear ring simultaneously. Formula verification simplifies the assembly process.

Benefits of technology

It enables precise assembly of the NW-type compound planetary gear transmission device, improves the certainty and success rate of assembly, simplifies the operation steps, and is applicable to assembly guidance for any number of teeth and planetary gears.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention relates to the field of planetary gear assembly technology and discloses an assembly method for an NW-type composite planetary gear transmission device. The method includes: establishing tooth position markings for the first and second planetary gear segments in each double planetary gear set; assembling the first double planetary gear set between the sun gear and the internal gear ring; based on the tooth position markings of any planetary gear segment in the first double planetary gear set, establishing a reference marking at the corresponding meshing position of the central gear meshing with the planetary gear segment; determining the target tooth position markings for subsequent double planetary gear sets to be assembled, as well as the target meshing position markings on the sun gear or internal gear ring, based on predetermined assembly parameters; and assembling each subsequent double planetary gear set sequentially. By introducing a marking system and parameterized assembly logic, the assembly process has clear operational steps and judgment criteria, making it applicable to on-site assembly guidance for NW-type composite planetary gear transmission devices with arbitrary structural parameters.
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