Novel compact wind power main gearbox

Abstract

The invention belongs to the field of wind turbine generators, and particularly relates to a novel super-compact wind power main gearbox. A wind wheel locking flange, a main bearing and a box body aresequentially connected through connecting pieces to form a gearbox shell, and an outer ring of the main bearing is exposed as a part of the gearbox shell; a first-stage planetary carrier is connectedwith a fan hub of a wind turbine generator and is in key connection with a second-stage planetary carrier assembly, one end of an output sun wheel shaft is connected with a power generator, and the other end of the output sun wheel shaft is connected with the secondary planetary carrier assembly. According to the compact wind power main gearbox, fan blade input is changed into a disc type connecting structure through a shaft diameter structure, the fan hub is directly connected with the first-stage planetary carrier of the gearbox, a main shaft and a main shaft bearing in a traditional structure are omitted, the new main bearing is designed to serve as a supporting shaft system, a roller bearing is selected as the supporting shaft system, and the outer ring of the main bearing serves as one part of the gearbox shell. Due to the design, the axial size of the gearbox is greatly reduced, the structure is more compact, the power density is large, the reliability is high, and the efficiency is high.

Description

Technical field [0001] The invention relates to the technical field of wind turbines, in particular to a new type of super compact main gearbox for wind power. Background technique [0002] As a kind of clean renewable energy, wind energy has attracted more and more attention from all countries in the world. China has a large wind energy reserve and a wide distribution. The wind energy reserve on land alone is about 253 million kilowatts. In the past five years, the world wind energy market has been With a growth rate of 40%, it is estimated that the world wind energy market will increase by 25% every year in the next 20-25 years. [0003] The equipment required for wind power generation is called a wind turbine. This kind of wind turbine can be roughly divided into wind turbine hub, main gear box, generator and nacelle. [0004] The gearbox in a wind turbine is an important mechanical component, and its main function is to transfer the power generated by the wind wheel under the a...

AI Technical Summary

Problems solved by technology

[0008] Large volume and weight, complex structure, many accessories

[0009] The uneven load factor of the planetary gear is high, which affects the life of the planetary gear bearing

[0010] Outdated technology, low transmission efficiency and power density, high cost

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