Compact hybrid drive wind generating set gearbox transmission structure

Abstract

The invention discloses a compact hybrid drive wind generating set gearbox transmission structure. The structure comprises a first-stage planetary gear transmission system, a second-stage planetary gear transmission system and a third-stage planetary gear transmission system; the first-stage transmission system adopts fixed shaft internal meshing transmission, and power is input through an inner gear ring of the first-stage transmission system and averagely distributed and output through multiple outer gears of the first-stage transmission system; the second-stage transmission system adopts fixed shaft external meshing transmission, and the power is input through multiple large gears and converged to a central small gear to be output; and the third-stage planetary gear transmission systemis an NGW planetary transmission system, a planet carrier of the third-stage planetary gear transmission system is connected with a central small gear through a spline pair, and a sun gear of the third-stage planetary gear transmission system is connected with a generator. According to the structure, the radial space of original second-stage planetary transmission of a traditional compact hybrid wind generating set gearbox is fully utilized, and the wind power generation power and the gearbox speed ratio can be improved while the space of the gearbox is unchanged, which provides a solution forthe compact hybrid drive wind power generation transmission structure.

Description

technical field [0001] The invention relates to the technical field of wind power generation gear box transmission, in particular to a gear box transmission structure of a compact hybrid drive wind power generating set. Background technique [0002] figure 1 It is a simplified structural diagram of a traditional compact hybrid wind turbine gearbox. There are two stages of NGW type planetary gear transmission system, and the total speed ratio is between 22-25. The first-stage planetary gear transmission system 03, the transmission ratio is about 4.5; the second-stage gear planetary transmission system 09, the transmission ratio is about 5.5; the hub 04 is connected to the inner ring of the planetary carrier 05 and the main shaft bearing 06 of the first-stage planetary gear transmission system Together; the outer ring of the main shaft bearing 06 is connected with the box body 07 and the generator casing 08 to form the outermost structure of the wind turbine, replacing the n...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art, aiming at the problem that the gear ratio of the traditional compact hybrid wind power generating set is limited, a transmission structure of the gearbox for the compact hybrid driving wind power generating set is proposed, which is compatible with the traditional NGW planetary transmission gear Compared with the gearbox, one more stage of planetary transmission is added to form a total of three stages of planetary gear transmission. On the premise of keeping the space unchanged, it can increase the wind power generation power and the speed ratio of the gearbox, and provide a compact hybrid drive wind power transmission structure. solution, and the power of wind turbines can be applied between 2.5MW and 15MW

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