Ultra-compact semi-direct-drive multistage planetary wind power gear box structure

Abstract

The invention discloses an ultra-compact semi-direct-drive wind power gear box multi-stage planetary transmission structure which comprises a gear box body, a main bearing, a first-stage flange and at least two stages of planetary gear transmission systems. An inner ring of the main bearing is fixedly connected with a planet carrier of the first-stage planetary gear transmission system through the gear box body, so that an outer ring of the main bearing can rotate, and the first-stage flange is connected with an inner gear ring of the first-stage planetary gear transmission system, so that the wind wheel torque of the wind turbine generator is finally transmitted into the gear box through the hub system; compared with a traditional semi-direct-drive wind power gear box structure, the axial length of the gear box is shortened, loads of a transmission chain, an elbow, a yaw and a tower drum of a wind turbine generator can be reduced, the cost of the whole machine is reduced, a first-stage planetary gear transmission system can be conveniently maintained, meanwhile, a generator and the gear box are decoupled in design, optimization of the generator is facilitated, and the cost is reduced.

Description

technical field [0001] The invention relates to the technical field of wind power generation gearbox transmission, in particular to an ultra-compact semi-direct drive multi-stage planetary wind power gearbox structure. Background technique [0002] The semi-direct drive permanent magnet wind turbine refers to the wind turbine that uses a permanent magnet generator and the generator is coupled to the wind wheel through a medium-speed gearbox. Due to taking into account the advantages of the doubly-fed wind turbine and the direct-drive permanent magnet wind turbine, the semi-direct drive permanent magnet wind turbine has the advantages of high efficiency, low cost and high reliability. [0003] The traditional semi-direct drive wind power gearbox is generally a two-stage planetary transmission with a speed ratio of about 20. As the power of the wind turbine and the diameter of the impeller increase, the rated speed of the wind rotor decreases gradually, and then the output sp...

AI Technical Summary

Problems solved by technology

Three-stage planetary: The three-stage internal ring gear 011 is fixed, the three-stage planetary carrier 09 is input, the third-stage sun gear is output by 010, and is connected to the generator rotor through a coupling. Therefore, the traditional three-stage planetary transmission structure has a long axial direction and transmission Chains, elbows, yaws and towers have large loads, and the cost of the whole machine is high

Images