Design parameter optimization method for flexible pin shaft type wind power gear box transmission system

Abstract

The invention relates to the technical field of wind power gear boxes, in particular to a flexible pin shaft type wind power gear box transmission system design parameter optimization method which comprises the steps that the outer diameter size of an inner gear ring is determined according to the modulus of the inner gear ring and the number of teeth of the inner gear ring; the first length range and the first diameter range of the flexible pin shaft are determined according to the maximum normal stress capable of being borne by the flexible pin shaft; determining a second diameter range according to the maximum shear stress of the flexible pin shaft; determining a second length range and a planetary gear pitch diameter range according to the maximum deformation of the flexible pin shaft; according to the outer diameter size of an inner gear ring, a first length range, a second length range, a first diameter range, a second diameter range and a planetary gear pitch diameter range, the minimum volume sum, the equal strength and the maximum power density of all parts of the flexible pin shaft type wind power gear box transmission system serve as optimization objective functions; optimized design parameters of the flexible pin shaft type wind power gear box transmission system are obtained, the gear tooth wedging phenomenon is avoided, and the cost of the wind power gear box is reduced.

Description

technical field [0001] The invention relates to the technical field of wind power gearboxes, in particular to a method for optimizing design parameters of a transmission system of a flexible pin shaft type wind power gearbox. Background technique [0002] The development of wind power is one of the key ways to achieve the "30·60" dual-carbon goal. my country's wind resource reserves exceed 1 billion kilowatts, and the development potential is huge. By the end of 2020, the cumulative installed capacity of wind power in my country is about 279GW (gigawatt, the unit of installed capacity), ranking first in the world. However, the average cost of electricity per kilowatt-hour of offshore wind power in my country is about 0.85 yuan / kWh, and there is still a big gap between grid parity. The development of cost-effective high-power speed-up wind turbines is one of the effective measures to reduce the cost of electricity and realize the grid parity of offshore wind. The semi-direct...

AI Technical Summary

Problems solved by technology

However, in the design process of the flexible pin shaft, the pin shaft is too flexible, and it is easy to cause the radial deformation of the planetary gear to be too large under the combined action of gravity and torque, resulting in the wedging phenomenon of the gear teeth, resulting in the unevenness between the driving side and the non-driving side of the gear. Contact will be generated, which will increase the shock vibration of the system, resulting in the transition curve interference between the two gears when the planetary sun gear and the planetary gear mesh

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