Flexible planet gear transmission mechanism of wind power gear box

Abstract

The invention discloses a flexible planet gear transmission mechanism of a wind power gear box. The flexible planet gear transmission mechanism of the wind power gear box comprises a shaft pin (11), a planet gear support (13), a planet gear (14) and a planet gear bearing (15), wherein the shaft pin (11) is installed on the planet gear support (13), the planet gear (14) is installed on the shaft pin (11) through the planet gear bearing (15), the shaft pin (11) is a hollow shaft, a shaft sleeve (12) is installed between the shaft pin (11) and the planet gear bearing (15), and an inner step (16) is arranged in the middle of the shaft sleeve (12). The flexible planet gear transmission mechanism of the wind power gear box has the advantages that in the situation that wind load changes, reasonable elastic deformation of the shaft pin can be kept, the service life of an engaging tooth is prolonged, normal engagement of a planet gear engaging tooth pair can be kept, and stability of transmission of the planet gear can be improved.

Description

technical field [0001] The invention relates to a planetary gear transmission mechanism of a wind power gearbox, in particular to a flexible planetary gear transmission mechanism of a wind power gearbox. Background technique [0002] figure 1 It is a diagram of the planetary gear transmission mechanism of the existing wind power gearbox, which includes a two-stage planetary gear train and a fixed shaft gear train. The first-stage planetary gear train has a first sun gear shaft 1, a first planetary gear carrier 2, a first planetary gear 3 and a first ring gear 4, and the first planetary gear carrier 2 is connected to and driven by the blade main shaft , to drive the first sun gear shaft 1 to rotate; the second-stage planetary gear train has a second sun gear shaft 5, a second planetary gear carrier 6, a second planetary gear 7 and a second ring gear 8, and the second planetary gear carrier 6 and The first sun gear shaft 1 is coaxially linked to drive the second sun gear sha...

AI Technical Summary

Problems solved by technology

However, too much flexibility and floating of parts will increase the complexity of the system and affect the reliability of the system. Therefore, various measures to improve the load sharing performance of the wind power gearbox transmission are concentrated on the first-stage planetary gear train

[0004] Chinese patent document CN102518787A discloses a planetary transmission structure of a wind power gearbox. This patent uses a pair of tapered roller bearings on the planetary gear shaft and installs them back to back. It can withstand the impact caused by the axial force of the planetary gear, but the planetary gear The shaft cannot produce elastic deformation, and cannot maintain the normal meshing of the meshing tooth pair under the impact load

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